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add pdnsd library in for vpn service DNS!

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Nathan Freitas 2016-06-29 10:09:47 -04:00
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commit 56683a39b3
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Most of pdnsd was written by Thomas Moestl (tmoestl@gmx.net).
In the "par" versions large parts of the code have been revised
and several features have been added by Paul Rombouts.
Small parts of this program are based on code that was taken from nmap (IP
checksumming), the isdn4k-utils (ippp interface uptest), glibc 2.1.2 (some
definitions for kernel 2.2.x missing in 2.0 glibcs) and FreeBSD
(SIZEOF_ADDR_IFREQ in netdev.c).
nmap was written by Fyodor. The insd4k-utils were written by Fritz Elfert and
others. The GNU C library (glibc) is copyright by the Free Software
Foundation.
The following people have contributed code:
Andrew M. Bishop contributed support for server labels
Carsten Block contributed 'configure'-able rc scripts
Stephan Boettcher contributed the SCHEME= option.
P.J. Bostley contributed patches to get pdnsd working on
alpha
Frank Elsner contributed rc script fixes
Christian Engstler contributed patches for SuSE compatability
Bjoern Fischer contributed code to make pdnsd leave the case of names
in the cache unchanged
Torben Janssen contributed RedHat rc scripts
Olaf Kirch contributed a security fix for the run_as()
function
Bernd Leibing contributed fixes to the spec file.
Sourav K. Mandal contributed the autoconf/automake code, gdbm
caching facility and many suggestions
Markus Mohr contributed Debian rc scripts
Alexandre Nunes contributed autoconf fixes
Wolfgang Ocker contributed the server_ip option
Soenke J. Peters contributed patches and suggestions for RedHat
compatability
Roman Shterenzon contributed many helpful hints and patches for
FreeBSD compatability.
Andreas Steinmetz contributed the code for the query_port_start and
query_port_end options (which I changed slightly,
so blame any breakage on me ;)
Marko Stolle contributed the contrib/pdnsd_update.pl script that
makes pdnsd usable in a DHCP setup.
Lyonel Vincent extended the serve_aliases option to support an
arbitrary number of aliases
Paul Wagland contributed a patches for bind9-compatability
and for some memory leaks on error paths.
Sverker Wiberg contributed IPv6 build fixes
Michael Wiedmann contributed the pdnsd-ctl.8 man page.
Ron Yorston contributed the dev-uptest for Linux ppp dial-
on-demand devices
Nikita V. Youshchenko contributed extensions to the "if" uptest
Mahesh T. Pai contributed the pdnsd.8 man page.
Nikola Kotur contributed the Slackware start-up script.
Kiyo Kelvin Lee contributed a patch for Cygwin support.
Rodney Brown contributed a patch for Darwin (Apple Mac OS X) support.
Jan-Marek Glogowski contributed a patch implementing the "use_nss" option.
Please look into the THANKS file for people who helped me in various ways on
this project.
If this list is incomplete, pease drop me a mail!

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DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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A small part of the pdnsd source is licensed under the following BSD-style
license:
Copyright (C) 2001 Thomas Moestl
This file is part of the pdnsd package.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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2000-02-15
Version 0.2. First working alpha with the extended feature set.
2000-02-16
Version 0.3 with many bugfixes, better standard conformity and
some new features.
2000-02-17
Did a lint on the code, implemented soft timeouts, again bugfixes,
drastically reduced cache memory requirements, implemented local
records.
Version 0.4 released.
2000-02-19
Recursive query finally implemented. Version 0.5 out.
2000-02-20
Various bugfixes. The server now always tries to get an AA answer
if possible; this implies recursion. This is to deal better with
caching servers that may return incomplete results on * queries.
This may be a little sub-optimal since it may not take the full
effect of caching, but it is the only real possibility of getting
complete records.
Redid the deps in the makefile for now.
Version is now 0.6.
2000-02-21
Another set of bugfixes. Version is 0.6.1.
2000-02-22
Another set of bugfixes. It should stabilize by now. Answer compression
is there finally. Version is therefore up again, 0.7 by now.
2000-02-23
Minor bugfixes, isdn interface uptest added. The new record types as of
rfc1700 are implemented, but as a compile-time option, since normally
there is no need to waste space for them.
Version is 0.7.1.
2000-02-24
Version 0.7.2 with all rrs up to KX (36). #define DNS_NEW_RRS in
config.h and (re)compile if you want to use them. Delete the cache
file before using a version with this option changed!
NSAP-PTR does NOT WORK (any incoming answer containing it may cause
a format error) because it is ill-designed (see TODO). Never mind, it
is officially deprecated anyway.
The secure DNS extension record types defined in RFC 2065 (KEY, SIG,
NXT) are cached only and therefore useless.
2000-02-26
Version 0.8 with parallel query (and probably new bugs) introduced.
2000-02-27
Version 0.8.1 with minor bugfixes on the new features.
2000-02-27
Version 0.8.5 with authority support and the usual bugifxes. Some issues
with standard conformity were also fixed (wow, two versions a day).
2000-02-28
Implemented caching of non-authoritative records. This allows better
usage of other caching name servers. This may return non-authoritative
records to any non-wildcard query. If a wildcard query arrives, we
always look for authoritative records, so we do if the non-authoritative
answer does not contain at least one answering record to the query.
This fixes the sub-optimal behaviour since 0.6.
Version is therefore up to 0.8.7 (0.8.6 was also released today
containing bugfixes)
2000-02-29
Better thread support, avoiding deadlocks in signal handling. The cost
is unfortunately one more thread.
New option server_port in config file.
Version is 0.8.8.
2000-03-01
Nailed a renitent memory leak bug to the wall (shame, what a trivial
mistake). Also improved handling of error conditions slightly.
Version is 0.8.9.
2000-03-01
Cache code cleanup. The development of the non-parallel query code
is discontinued, although it still works. If you want serial query,
just set PAR_QUERIES to 1.
Additional information finally implemented.
We are up to 0.9.
2000-03-02
Fixed a DoS possibility.
More rfc compatability fixups and a smarter resolver logic.
Version 0.9.1
2000-03-02
Added the source section to the config file handling. This allows to
source your /etc/hosts file. Version 0.9.2.
2000-03-02
Avoiding double additional records now. Version 0.9.3.
2000-03-09
Fixed some REALLY STUPID bugs. Uuummph, thought it was finished.
However, the number of bugs remaining is always n+1...
Anyway, we are up to 0.9.4. Hope that there are no mean bugs left.
2000-03-14
Added another uptest, exec. See README for details. Also grained the
cache size finer (it's now specified in kB). Version 0.9.5
2000-04-07
Fixed some really stupid bugs, what else? Version is 0.9.6
To be more exact: fixed misc bugs, cleaned up hash.c and cache.c
2000-04-20
Again fixed some bugs, version is now 0.9.7.
2000-04-29
Fixed a build problem caused by some missing #defines in glibc2.0 and a
minor bug.
Version is up to 0.9.8
2000-04-30
Fixed some unclean C code and did a general C lint. Thanks to Byrial
Jensen for pointing out some issues. Now using stricter compiler flags.
Also replaced the daemon() call in main.c for improved portability.
Pre-Released 0.9.9p1
2000-05-03
Released 0.9.9p2 with the changes of 0.9.9p1, Documentation updates,
bugfixes, and the Red Hat rc scripts contributed by Torben Janssen.
Also, the meaning of the command line option -v has changed.
There is a new config file option "lean_query" that is on by
default. It is an optimization, so please look in the docs when
updating whether you want it switched on or not.
Removed the long-dead serial query code from the distribution tree.
Some resolvers seem to be broken somehow in a respect that it cares
about order in which the records appear. In particular, it wants
cname to appear before other records. Ok, so it be...
2000-05-04
Save all names in lower case in the rrs.
Tidying up the source tree.
The long-awaited cache structure changes have been started. Please
delete you cache files before using this new release.
2000-05-05
Fixed several bugs in the old and in the new source tree.
Use time_t instead of long for internal time storage for compatibility.
2000-05-06
Version 0.9.10.
This fixes a bug in uptest=if. Red Hat and configuration fixes
suggested by Soeren J. Peters were included.
2000-05-08
Version 0.9.11
This fixes a locally exploitable security problem (pdnsd.cache was
world-writeable). This is actually a one-line fix; for a description of
possible dangers, please refer to the html documentation.
Thanks to Alan Swanson for reporting.

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The installation instructions are in doc/html/doc.html and doc/txt/manual.txt.
The system requirements are listed in doc/html/index.html and doc/txt/intro.txt.
I recommend using the html version.
Following are generic installation instructions for autoconf programs.
I strongly recommend to read the Installation section in the docs!
Basic Installation
==================
These are generic installation instructions.
The `configure' shell script attempts to guess correct values for
various system-dependent variables used during compilation. It uses
those values to create a `Makefile' in each directory of the package.
It may also create one or more `.h' files containing system-dependent
definitions. Finally, it creates a shell script `config.status' that
you can run in the future to recreate the current configuration, a file
`config.cache' that saves the results of its tests to speed up
reconfiguring, and a file `config.log' containing compiler output
(useful mainly for debugging `configure').
If you need to do unusual things to compile the package, please try
to figure out how `configure' could check whether to do them, and mail
diffs or instructions to the address given in the `README' so they can
be considered for the next release. If at some point `config.cache'
contains results you don't want to keep, you may remove or edit it.
The file `configure.in' is used to create `configure' by a program
called `autoconf'. You only need `configure.in' if you want to change
it or regenerate `configure' using a newer version of `autoconf'.
The simplest way to compile this package is:
1. `cd' to the directory containing the package's source code and type
`./configure' to configure the package for your system. If you're
using `csh' on an old version of System V, you might need to type
`sh ./configure' instead to prevent `csh' from trying to execute
`configure' itself.
Running `configure' takes awhile. While running, it prints some
messages telling which features it is checking for.
2. Type `make' to compile the package.
3. Optionally, type `make check' to run any self-tests that come with
the package.
4. Type `make install' to install the programs and any data files and
documentation.
5. You can remove the program binaries and object files from the
source code directory by typing `make clean'. To also remove the
files that `configure' created (so you can compile the package for
a different kind of computer), type `make distclean'. There is
also a `make maintainer-clean' target, but that is intended mainly
for the package's developers. If you use it, you may have to get
all sorts of other programs in order to regenerate files that came
with the distribution.
Compilers and Options
=====================
Some systems require unusual options for compilation or linking that
the `configure' script does not know about. You can give `configure'
initial values for variables by setting them in the environment. Using
a Bourne-compatible shell, you can do that on the command line like
this:
CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure
Or on systems that have the `env' program, you can do it like this:
env CPPFLAGS=-I/usr/local/include LDFLAGS=-s ./configure
Compiling For Multiple Architectures
====================================
You can compile the package for more than one kind of computer at the
same time, by placing the object files for each architecture in their
own directory. To do this, you must use a version of `make' that
supports the `VPATH' variable, such as GNU `make'. `cd' to the
directory where you want the object files and executables to go and run
the `configure' script. `configure' automatically checks for the
source code in the directory that `configure' is in and in `..'.
If you have to use a `make' that does not supports the `VPATH'
variable, you have to compile the package for one architecture at a time
in the source code directory. After you have installed the package for
one architecture, use `make distclean' before reconfiguring for another
architecture.
Installation Names
==================
By default, `make install' will install the package's files in
`/usr/local/bin', `/usr/local/man', etc. You can specify an
installation prefix other than `/usr/local' by giving `configure' the
option `--prefix=PATH'.
You can specify separate installation prefixes for
architecture-specific files and architecture-independent files. If you
give `configure' the option `--exec-prefix=PATH', the package will use
PATH as the prefix for installing programs and libraries.
Documentation and other data files will still use the regular prefix.
In addition, if you use an unusual directory layout you can give
options like `--bindir=PATH' to specify different values for particular
kinds of files. Run `configure --help' for a list of the directories
you can set and what kinds of files go in them.
If the package supports it, you can cause programs to be installed
with an extra prefix or suffix on their names by giving `configure' the
option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
Optional Features
=================
Some packages pay attention to `--enable-FEATURE' options to
`configure', where FEATURE indicates an optional part of the package.
They may also pay attention to `--with-PACKAGE' options, where PACKAGE
is something like `gnu-as' or `x' (for the X Window System). The
`README' should mention any `--enable-' and `--with-' options that the
package recognizes.
For packages that use the X Window System, `configure' can usually
find the X include and library files automatically, but if it doesn't,
you can use the `configure' options `--x-includes=DIR' and
`--x-libraries=DIR' to specify their locations.
Specifying the System Type
==========================
There may be some features `configure' can not figure out
automatically, but needs to determine by the type of host the package
will run on. Usually `configure' can figure that out, but if it prints
a message saying it can not guess the host type, give it the
`--host=TYPE' option. TYPE can either be a short name for the system
type, such as `sun4', or a canonical name with three fields:
CPU-COMPANY-SYSTEM
See the file `config.sub' for the possible values of each field. If
`config.sub' isn't included in this package, then this package doesn't
need to know the host type.
If you are building compiler tools for cross-compiling, you can also
use the `--target=TYPE' option to select the type of system they will
produce code for and the `--build=TYPE' option to select the type of
system on which you are compiling the package.
Sharing Defaults
================
If you want to set default values for `configure' scripts to share,
you can create a site shell script called `config.site' that gives
default values for variables like `CC', `cache_file', and `prefix'.
`configure' looks for `PREFIX/share/config.site' if it exists, then
`PREFIX/etc/config.site' if it exists. Or, you can set the
`CONFIG_SITE' environment variable to the location of the site script.
A warning: not all `configure' scripts look for a site script.
Operation Controls
==================
`configure' recognizes the following options to control how it
operates.
`--cache-file=FILE'
Use and save the results of the tests in FILE instead of
`./config.cache'. Set FILE to `/dev/null' to disable caching, for
debugging `configure'.
`--help'
Print a summary of the options to `configure', and exit.
`--quiet'
`--silent'
`-q'
Do not print messages saying which checks are being made. To
suppress all normal output, redirect it to `/dev/null' (any error
messages will still be shown).
`--srcdir=DIR'
Look for the package's source code in directory DIR. Usually
`configure' can determine that directory automatically.
`--version'
Print the version of Autoconf used to generate the `configure'
script, and exit.
`configure' also accepts some other, not widely useful, options.

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-e 's:[@]def_id[@]:$(PACKAGE):g' \
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324
app/src/main/jni/pdnsd/NEWS Normal file
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@ -0,0 +1,324 @@
Version 1.2.9a fixes a bug in the 1.2.9 release that causes a build failure when
pdnsd is configured with --enable-strict-rfc2181. Unless you use this option to
compile pdnsd, there is no need to upgrade from 1.2.9 to 1.2.9a.
Version 1.2.9 has support for many additional RR types, in particular those
needed for DNSSEC (though no support for the DNSSEC protocol itself yet in
pdnsd). Caching data structures are now more efficient when they only store the
most commonly used RR types. Fine-grained configurability over which RR-types
are cache-able. Pdnsd now has support for EDNS (Extension mechanisms for DNS),
although its usefulness is currently limited to enabling UDP messages larger
than 512 bytes. Defining local TXT records in the configuration file is now
supported. A new configuration option provides a fix in case the query uptest
fails due to remote servers ignoring empty queries. Several bugs have been fixed
including a UDP socket descriptor leak that affected the FreeBSD platform, and
an IPv6 port binding bug.
Version 1.2.8 implements support for automatic discovery of root servers.
There are also some improvements in the resolver and a new default setting for
the neg_rrs_pol configuration option.
Version 1.2.7-par fixes some security problems. It contains a fix for a
"dangling pointer" bug that could cause pdnsd to crash when it received a long
reply. It also addresses some of the issues raised in the CERT vulnerability
note VU#800113 by making the default of query_port_start equal to 1024, thereby
ensuring that source ports are randomly selected by the pdnsd resolver in the
range 1024-65535. This release also fixes problems with compiling pdnsd for the
ARM architecture and for the Darwin platform (Max OS X). There are a number of
(minor) new features. pdnsd now supports "include" files, essentially
configuration files that only contain definitions for local records. It is now
possible to define interactively, using pdnsd-ctl, any local record that can be
defined in a configuration file.
Version 1.2.6-par has an upgraded license: GPL version 3.
A bug has been fixed which which caused pdnsd to handle NXDOMAIN replies
inefficiently when configured with neg_domain_pol=on. Also the code for the
ping test has been fixed, which was broken for 64-bit systems. A new option
randomize_servers can be used to give each server in a section of the
configuration file an equal chance of being queried. The new options reject,
reject_policy and reject_recursively make it possible to check for the presence
of certain IP addresses in the replies of name servers and to correct some types
of unwanted replies or to censor these IP addresses.
The pdnsd-ctl 'add a' and 'add aaaa' commands now allow multiple IP addresses to
be specified for the same name. There are some further improvements to pdnsd's
recursive resolver.
Version 1.2.5-par introduces a new query method: udp_tcp. With this method a UDP
query is tried first and, if the UDP answer is truncated, the query is repeated
using TCP, which is the behaviour that seems to be recommended by the DNS
standards. There is a new configuration option use_nss, which can be turned off
to prevent lengthy timeouts and stalls in certain situations. A bug has been
fixed which could cause pdnsd to crash if debug output was generated before the
debug output stream was properly initialized.
In version 1.2.4-par a memory leak and a minor buffer-overflow problem have been
fixed. There is now a fix for some situations that would previously cause pdnsd
to exit prematurely (such as ACPI S3 sleep or trying to attach strace to pdnsd).
Time intervals specified in the configuration file can now be expressed in
minutes, hours, days and weeks as well as seconds. Support for Apple Mac OS X
v10.4 Tiger has been improved. The "pdnsd-ctl status" command now also provides
some information about the status of the running threads. There are some further
improvements in the debugging information provided by pdnsd.
TCP-query support is now compiled in by default (but can still be disabled using
the configure option --disable-tcp-queries).
In version 1.2.3-par the "pdnsd-ctl empty-cache" command can be provided with an
include/exclude list, allowing the user to specify a selection of names to be
removed, instead of emptying the cache completely.
Additional improvements: pdnsd should now remain responsive while executing the
"pdnsd-ctl empty-cache" command. With the query_method=tcp_udp option pdnsd will
now also try a UDP query after a TCP connection times out, which should allow
pdnsd to resolve the same names with query_method=tcp_udp as with
query_method=udp_only, although perhaps with an occasional delay.
"pdnsd-ctl config" or "pdnsd-ctl server" commands should now run without delays,
even if pdnsd is performing ping or query uptests at the time. A problem with
resolving certain names using root servers has been fixed.
Version 1.2.2-par has a number of important portability improvements. A bug has
been fixed that prevented pdnsd from compiling successfully on some 64 bit
architectures. The code for determining endianness (most significant or least
significant byte first) should now be more portable. This release has
(experimental) support for the Darwin (Apple Mac OS X) platform. On Linux
systems, the configure script will now try to detect automatically whether the
system implements the Native POSIX Thread Library, but the method used may not
necessarily be foolproof. In addition, the debug features have been improved and
should make it easier to find out why pdnsd considers some queries or replies
malformed.
Version 1.2.1-par has improved support for non-Linux platforms. This release has
(experimental) support for the Cygwin platform, and should also fix some
compilation glitches that have been reported by FreeBSD users.
Version 1.2-par is a new and improved version of pdnsd! Most of the changes
effect the internal workings of pdnsd, but there are also a number of
interesting new features (well, I think they are interesting). Among the bugs
fixed are two rather nasty ones which involve the handling of NXT and NAPTR
records and which can cause pdnsd to crash or abort. The new features include a
new server availability test which can be specified with uptest=query, support
for reading the DNS configuration from resolv.conf files, a new option for
optimizing the use of root servers, a new option that makes defining local
records for reverse resolving easier, support for defining wildcard records, a
new pdnsd-ctl command for reloading the config file without restarting pdnsd,
and a new pdnsd-ctl command for dumping information about the names stored in
the cache.
The documentation has also been updated: there is now a pdnsd.conf man page. For
a more complete list of the changes I'll have to refer you to README.par and the
ChangeLog.
Version 1.1.11a-par contains a fix for FreeBSD users that bypasses a problem
with the macro ENONET, which can cause a compilation failure when it is
undefined. Linux users will notice no difference between 1.1.11a-par and
1.1.11-par.
Version 1.1.11-par has a rather large number of small changes, which are rather
difficult to summarize. Among the bugs fixed are a race condition in the cache
lookup code, a flaw in the code that caused a busy spin when a remote server
answered with "Not Implemented", and problems with the -4 and -6 command-line
options. Among the improvements are an alternative sorting algorithm which
should allow pdnsd to start up faster when reading a large cache file from disk,
automatic mapping of IPv4 to IPv6 addresses when running in IPv6 mode, somewhat
more efficient memory use, better compression of the replies and changes in the
parallel querying algorithm that should improve the chances of catching a reply
from a remote server. For a more complete list of the changes I'll have to
refer you to README.par and the ChangeLog.
Version 1.1.10-par has a new parser for configuration files, completely
rewritten from scratch in C. The main advantages are: (f)lex and yacc/bison are
no longer needed to build pdnsd, more informative error messages instead of
merely "parse error", and string literals no longer need to be enclosed in
quotes in most cases. Furthermore, a bug has been fixed that caused incorrect
IPV6-type PTR records to be generated when sourcing /etc/hosts like files.
There have been other small changes, more details can be found in the ChangeLog.
Version 1.1.9-par adds some missing pieces to the documentation (the pdnsd
manual and the man page for pdnsd-ctl). The changes to the code consist mostly
of optimizations, removal of some size limits due to fixed-size buffers, and
some cleaning up. I've also tried to make the error responses of pdnsd-ctl more
helpful. More details can be found in the ChangeLog.
Version 1.1.8b1-par8 introduces a "delegation-only" feature that may be useful
for blocking Verisign's Sitefinder. The parser for the configuration file now
tolerates domain names missing a dot at the end. I have provided alternative
implementations for some GNU extensions that I used in an effort to make the
code more portable. In particular, the code should build on FreeBSD again. More
details can be found in the README.par file.
Version 1.1.8b1-par7 fixing a number of bugs. I have also reworked some of the
code for adding and removing entries in the cache in an effort to improve
efficiency and stability. More details can be found in the ChangeLog.
Version 1.1.8b1-par6 introduces some further code cleanup. In addition the
documentation has been revised.
Version 1.1.8b1-par5 fixes a troublesome allocation size error that has been
discovered in Thomas Moestl's code. In practice this bug only wastes memory but
it could also potentially lead to memory corruption. Upgrading is
recommended. More details can be found in the ChangeLog.
Version 1.1.8b1-par4 has been released. Due to incompatibilities between
various implementations of the pthread library on Linux systems, problems can
occur with signal handling in pdnsd. The usual symptom is failure by pdnsd to
save the cache to disk, and /var/cache/pdnsd/pdnsd.cache remaining empty. If you
experience this kind of trouble, try reconfiguring with different values for the
new --with-thread-lib option. The allowable values are described in the
documentation.
pdnsd is no longer maintained by Thomas Moestl: I have not had time to maintain
pdnsd for quite a while now, and have been very slow to respond to issues, or
did not respond at all. It is time that I officially announce that pdnsd is no
longer actively maintained; I apologize to all those who reported bugs or asked
questions without receiving any reply. However, Paul A. Rombouts has published a
patch set against the last released version at
http://www.phys.uu.nl/~rombouts/pdnsd.html, which cleans up a lot of code fixes
many bugs.
Version 1.1.7a fixes a reversed assertion that would cause pdnsd to terminate
if used with the ping uptest. No other changes were made.
Version 1.1.7 fixes some problems that might be remotely exploitable to
gain access as the user pdnsd runs as (an unprivileged user by default). To do
this, an attacker needs to control a name server that is queried by pdnsd, and
send a malicious reply to such a query. Upgrading is strongly recommended!
There are also minor bug fixes and stability improvements.
Version 1.1.6 adds the query_port_start and query_port_end options (contributed
by Andreas Steinmetz), that allow confining the ports pdnsd uses for outgoing
queries to a certain range. It also fixes numerous bugs, one of which could
cause pdnsd to hang; update is therefore recommended.
Version 1.1.5 contains a fix for a security bug that would allow local users
that are allowed to use pdnsd-ctl on a running pdnsd server to execute
arbitrary code as the user that pdnsd runs as (or on Linux, when strict_setuid
is not enabled, as the user that started pdnsd). The danger of this is usually
quite limited; the status socket is not enabled by default, it's default
permissions do only allow the user pdnsd runs as to use the socket,
strict_setuid is enabled by default and pdnsd runs as an unprivileged user.
There is also a new configure option, --enable-underscores, that will make
pdnsd allow underscores in domain names. Furthermore, the SRV record handling
has been fixed to allow underscores in any case (this was not allowed
previously, but is required by the RFC). SOA records are not put in the
answer section any more if no answers are found (this violates the RFC's).
It may be put in the authority section in a later version.
There are also various bugfixes in this release.
Upgrade is recommended.
Version 1.1.4 fixes various smaller bugs, and should also improve the cache
write performance especially for larger caches. There are also two new
features: servers can now be given a label (using the label server option)
which can be used to identify them for the pdnsd-ctl server command
(contributed by Andrew M. Bishop), and local records can be marked to make
the domain record authoritative in pdnsd's cache (which means that pdnsd will
assume that records that are not present in the cache for that domain are
non-existent); this is on by default now, and can be controlled using the new
authrec server option).
Version 1.1.3 added contrib/ and had a lot of robustness fixes.
This release addresses a security hole that affects only Linux systems. Due to
a bug in glibc, pdnsd could crash during a port scan. This release contains
a workaround for this, as well as a fix for a deadlock under heavy load
conditions. It also fixes a possible problem that could be triggered by
malicious servers, and contains numerous bug fixes.
A script, contributed by Marko Stolle, makes pdnsd useful in a DHCP setup.
pdnsd also preservers the case of names in the cache, and should work much
better on alpha machines (thanks for the contributions by Bjoern Fischer
and P.J. Bostley that made this possible). New types were dded for rr
sections and pdnsd-ctl.
Upgrade is recommended.
Version 1.1.2 has a fix for a bug that could cause SERVFAIL to be
returned when NXDOMAIN would be appropriate. The bug surfaced only when
pdnsd queried name servers with a behaviour different from BIND's in the
NXDOMAIN case, e.g. pdnsd querying another pdnsd or e.g. djbdns.
Version 1.1.1 fixes a possible race condition in status socket creation.
This race might be used by a local attacker to change the access
permissions of a certain file in /tmp. The risk of this is probably
negligible. The default setup uses a non-privileged user, default mode
0600, and the status socket is disabled normally, so this should be
relatively safe. I don't see any possibility to exploit this, it is
more of a paranoia fix.
There are also some other minor fixes and documentation improvements.
Upgrade is recommended.
Version 1.1.0 introduces negative cacheing, pdnsd-ctl enhancements and
a much improved FreeBSD support. The cache file format has changed from
prior releases. Some configuration defaults have changed, too.
Version 1.0.15 is mostly a bugfix release. It also has a new option:
randomize_recs in the global section.
Version 1.0.14 has a fix in icmp.c that will make it build properly
on FreeBSD and older Linux systems.
Version 1.0.13 has some code cleanup, a fix for the Debian rc install,
and a security fix (contributed by Olaf Kirch): when changing
user and group id, pdnsd did not drop supplementary group IDs that
the original user was member of.
Version 1.0.12 is a bugfix release and contains some security
enhancements. There are also inclusion/exclusion lists for servers
(new options include=, exclude=, policy= in the server
section).
Version 1.0.11 fixes two bugs that might be used for denial-of-service
attacks, upgrading is recommended.
Versions 1.0.9 and 1.0.10 are bugfix releases.
Version 1.0.8 introduces special linux ppp device support contributed
by Ron Yorston, and has some bugfixes.
Version 1.0.7 introduces autoconf support, many new config file options and
the new pdnsd-ctl run-time configuration program.
Version 1.0.6 has another set of bugfixes, in addition to higher compile-
time configurability and UDP query support. It also contains Debian rc
scripts contributed by Markus Mohr.
Version 1.0.5 has some bugfixes and the new "server_ip" option
contributed by Wolfgang Ocker.
Version 1.0.4 introduces the new options run_as, strict_setuid and
paranoid. These new options are optional security enhancements.
Versions 1.0.1, 1.0.2 and 1.0.3 are bugfix releases.
Version 1.0.0 has a lot of changes compared to the 0.9.x tree, but much of
them "under the hood":
- IPv6 support (experimental; compile- and run-time configurable)
- FreeBSD (and such hopefully *BSD) support
- better rfc2181 compatability
- new options:
- serve_aliases in source section
- linkdown_kluge in global section
- max_ttl in global section
- cache-code reorganization, only one unified hash (of variable depth)
- Optimizations & cleanups
- Automatic deps (only interesting for developers ;-)
Version 0.9.11 fixes a locally exploitable security hole (the cache file was
world writeable by default). Please see ChangeLog.old for details.
Version 0.9.10 fixes some bugs and improves build on Red Hat.
Version 0.9.9 contains the rc scripts for Red Hat Linux contributed by Torben
Janssen, in addition to code cleanups and bugfixes.
The meaning of the option -v has changed in this release.
There is also a new config file option "lean_query" that is on by default. It
is an optimization, so please look in the docs when updating whether you want
it switched on or not.
When compiling versions after 0.9.8, you will probably get more
compiler warningsthan before. This is because the C compiler settings
have been made stricter.
Version 0.9.8 fixes a minor bug some build problems with glibc2.0 systems.
The versions 0.9.6 and 0.9.7 are bugfix releases.
Version 0.9.5 introduces uptest=exec, and a modified config file syntax (cache
sizes are now specified in kB).
Version 0.9.4 was the first to be released to the public. For information on
changes, see ChangeLog.

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# Package build script for Arch Linux,
# contributed by Alexander Drozdov.
pkgname=@PACKAGE@
pkgver=@VERSION@
pkgrel=@packagerelease@
pkgdesc="pdnsd is a proxy DNS server with permanent caching (the cache contents are written to hard disk on exit) that is designed to cope with unreachable or down DNS servers."
url="http://members.home.nl/p.a.rombouts/pdnsd.html"
license="GPLv3"
depends=()
makedepends=(glibc)
conflicts=()
replaces=()
backup=()
install=
source=(http://members.home.nl/p.a.rombouts/pdnsd/releases/$pkgname-$pkgver-$pkgrel.tar.gz)
md5sums=()
build() {
cd $startdir/src/$pkgname-$pkgver
./configure --prefix=/usr --enable-ipv6 --sysconfdir=/etc --with-distribution=ArchLinux
make || return 1
make DESTDIR=$startdir/pkg install
}

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You can find the documentation for pdnsd in the doc/ directory. The html
documentation (which I recommend) is in the doc/html/ subdirectory.
The pure text documentation (which is generated automatically from the
html documentation) is in doc/txt/.
The following documents are available:
index.html / intro.txt Overview, system requirements
doc.html / manual.txt Building, installation and usage instructions
faq.html / faq.txt The FAQ
Share and enjoy!
Thomas <tmoestl@gmx.net>
For news about recent changes in pdnsd the following files may be of
interest to you:
README.par
ChangeLog
NEWS
Last revised: 08 July 2007 by Paul Rombouts

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pdnsd version 1.2.9a by Paul Rombouts
=====================================
This file describes the version of pdnsd that I maintain personally and am
making available so other people can enjoy the latest features and fixes. Thomas
Moestl no longer maintains pdnsd himself, so I am effectively the new
maintainer. This README describes the new features in version 1.2. This version
has a rather large number of internal changes and also some new features, which
I am rather pleased with, even if I say so myself. I think the changes are
significant enough to warrant increasing the minor version number from 1.1 to
1.2. The differences between my previous "official" release 1.1.11 and Thomas'
last release 1.1.7a are described in my previous README, which I have renamed
REAME.par.old. In this README I restrict myself to describing changes between
1.1.11 and 1.2.
The main difference between versions 1.2 and 1.2.1, aside from some minor
changes, is that 1.2.1 has (experimental) support for the Cygwin platform.
Version 1.2.2 has further improvements in portability and should in
particular now also compile on the Darwin (Apple Mac OS X) platform.
Version 1.2.4 has some important fixes for a memory leak, a minor buffer-
overflow problem and some situations which could cause pdnsd to exit
prematurely. Note that TCP-query support is now compiled in by default, but can
still be disabled using a configure option.
The main new feature of version 1.2.5 is the new query method "udp_tcp".
Version 1.2.6 has an updated license: GPL version 3. The main new feature of
version 1.2.6 is the "reject" option, which makes it possible to censor or
correct for unwanted IP addresses in replies.
Version 1.2.7 contains an important fix for a "dangling pointer" bug and
attempts to make pdnsd less vulnerable to the issues raised in CERT
vulnerability note VU#800113. It also contains some improvements for defining
local records interactively using the pdnsd-ctl utility.
The main new feature of version 1.2.8 is automatic discovery of root servers,
as well as some minor improvements in the resolver.
Version 1.2.9 among other things supports many addtional RR types, uses data
structures that should be more slightly more memory efficient and has support
for EDNS, which allows DNS UDP messages to be larger than 512 bytes.
Version 1.2.9a is a simple bugfix release that fixes a problem with compiling
1.2.9 after configuring with --enable-strict-rfc2181. Unless you use this option
to compile pdnsd, there is no need to upgrade from 1.2.9 to 1.2.9a.
For instructions how to compile and install pdnsd see doc/html/doc.html or
doc/txt/manual.txt. Note that I am no longer distributing a patch w.r.t. Thomas'
version because the (compressed) patch file is barely smaller than the
(compressed) tar archive.
Here follows a list of some of changes in version 1.2 from a user's perspective.
For a more technical description of some of the changes in the code see the ChangeLog.
For a short history about recent releases have a look at NEWS or doc/html/index.html.
- First of all, two potentially rather nasty bugs have been fixed in the code
for the handling of NXT and NAPTR records. A response from a remote server
containing NXT records (even well-formed ones) will very likely cause pdnsd to
crash. The code for handling NAPTR records contained incorrect ASSERT
statements, which could cause pdnsd to abort in a controlled fashion, but
completely unnecessarily.
- Sampo Lehtinen has remarked that pdnsd sometimes failed to resolve classless
reversed-delegated IP addresses, and that this has something to do with the
fact that pdnsd didn't accept '/' characters in domain names. After reading
some of the relevant RFCs I decided to remove all restrictions on the types
of characters that pdnsd accepts in domain names. Of course for most
applications, there are many characters which don't make sense in domain
names, but I feel that it is the responsibility of the client application to
reject these, not the proxy server.
- At the suggestion of Dan Tihelka, I have expanded to the server_ip= option to
allow the name of an interface to be specified instead of an IP address.
Presently this has been tested on Linux only. Can someone running pdnsd on
*BSD tell me if the code for getting the address of an interface is different
for Linux and BSD-type systems?
- At the suggestion of Juliusz Chroboczek I've added an new server availability
test which can be specified with uptest=query. This can be useful as an
alternative to "uptest=ping" in case the remote server does not respond to
ICMP_ECHO requests at all, which unfortunately is quite common these days.
"uptest=query" causes pdnsd to send an empty query to remote name servers. Any
well-formed response (apart from SERVFAIL) within the timeout period will be
interpreted as a sign that the server is "up".
- Instead of specifying the IP addresses of the name servers that pdnsd should
query in a server section of the config file, you may also specify a
resolv.conf-style file. Preferably this should not be /etc/resolv.conf. If the
contents of the resolv.conf type file changes while pdnsd is running, you can
make pdnsd aware of the changes with the "pdnsd-ctl config" command, see
below. Example:
server {
label=myisp;
file=/etc/ppp/resolv.conf;
timeout=10;
}
- There is a new option for "server" sections in the config file:
root_server=on/off.
In case a server section contains only addresses of root servers, which
usually only give the name servers of top level domains in their reply,
setting root_server=on will enable certain optimizations. This involves using
cached information to reduce queries to the root servers, thus speeding up the
resolving of new names.
- New option for "rr" sections in the config file: reverse=on/off.
If you want a locally defined name to resolve to a numeric address and vice
versa, you can now achieve this by setting reverse=on before defining the A
record, making it unnecessary to define a separate PTR record for the reverse
resolving.
Example:
rr {
name = localhost;
reverse = on;
a = 127.0.0.1;
}
has the same effect as:
rr {
name = localhost;
a = 127.0.0.1;
}
rr {
name = 1.0.0.127.in-addr.arpa;
ptr = localhost;
}
- In rr sections it is now possible to specify a wildcard name, i.e. a name
starting with the label *. The * in a wildcard can match one or more labels in
a queried name, but only whole labels. For example, *.mydomain will match
a.mydomain or www.a.mydomain, but not mydomain. Before you can specify an rr
section with name=*.mydomain you must define some records for mydomain,
typically NS and/or SOA records.
Example:
rr {
name = mydomain;
ns = localhost;
soa = localhost, root.localhost, 42, 86400, 900, 86400, 86400;
}
rr {
name = *.mydomain;
a = 192.168.1.10;
}
- There is a slight backwards compatibility problem which involves the name= and
owner= options in rr sections. The new version does not allow you to place
owner= before name=. On the other hand, you may now freely mix the owner
option with the a,ptr,cname,mx and soa options and define as many records of
this type as you like (including zero).
- pdnsd-ctl has three new commands:
config: Reloads pdnsd's configuration file. This is more efficient than
restarting pdnsd, and should not cause only noticeable interruption in DNS
service. However, some types of configuration changes cannot be put into
effect this way, and you will be prompted to restart pdnsd instead.
empty-cache: Empties the cache completely, freeing all existing entries.
In version 1.2.3 you can specify a selection of entries to delete by providing
a list of include/exclude patterns.
dump: Prints information about all the names stored in the cached. This is
mainly useful for diagnostic purposes.
- There is now a pdnsd.conf(5) man page, describing pdnsd's configuration file.
The man page has been generated from the html documentation using a customized
Perl script.
- New in version 1.2.4: Time intervals in the configuration files can now be
expressed in seconds, minutes, hours, days and weeks, using the suffixes
s,m,h,d,and w.
Example: 2h30m is interpreted as 2*60*60 + 30*60 = 9000 seconds.
- Version 1.2.5 introduces a new configuration option, contributed by Jan-Marek
Glogowski, called "use_nss" which can be turned off to prevent nasty delays in
certain situations.
Besides the query methods "udp_only", "tcp_only" and "tcp_udp" you can now
also specify "udp_tcp", which more closely adheres to the behaviour
recommended by DNS standards.
- Version 1.2.6 introduces the "randomize_servers" and "reject" options. By
setting "randomize_servers" on you can give each server in a server section an
equal chance of being queried, which is useful when resolving from root
servers, for instance. The "reject" option can be used to censor certain IP
addresses or correct for unwanted replies from servers you don't completely
trust.
- Version 1.2.7 contains support for "include" files which can be referenced
from configuration files or read interactively using pdnsd-ctl. These files
can be used to add local definitions to the cache without reconfiguring pdnsd.
The new "pdnsd-ctl eval" command can be used to interactively define local
records that could previously only be defined in configuration files but not
with the "pdnsd-ctl add" command.
- Version 1.2.8 contains support for automatic discovery of root servers.
Instead of supplying a complete list of IP addresses of root servers in a
server section of the configuration file, you need only enter one or two
addresses of name servers which know the names and addresses of the root
servers and set "root_server=discover".
The "neg_rrs_pol" option has a new default setting, which should allow
sensible negative caching of RRs in most situations, even if "proxy_only=on".
- Version 1.2.9 contains support for EDNS (Extension mechanisms for DNS), which
allows UDP messages to be larger than 512 bytes. Whether pdnsd uses EDNS in
outgoing queries is determined by the configuration option "edns_query". If
pdnsd receives a query using EDNS, it will reply using EDNS regardless of the
configuration settings.
Local TXT records can now be defined in the configuration file.
If the query uptest fails due to remote servers ignoring empty queries, this
can now be remedied using the new "query_test_name" config option.
The new features are described in greater detail in the manual doc/html/doc.html
or doc/txt/manual.txt.
Enjoy!
If you have any questions about my version of pdnsd, you can send these
to <p.a.rombouts@home.nl>. Questions about the original (unmaintained) pdnsd
version should be sent to <tmoestl@gmx.net> or <t.moestl@tu-bs.de>.

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pdnsd maintenance version 1.1.11-par by Paul Rombouts
=======================================================
This file describes the version of pdnsd that I maintain personally and am
making available so other people can enjoy the latest features and fixes.
Thomas Moestl no longer maintains pdnsd himself, so I am effectively the new
maintainer. The current version is 1.1.11-par, which has a rather large number
of small changes. Among the bugs fixed are a race condition in the cache lookup
code, a flaw in the code that caused a busy spin when a remote server answered
with "Not Implemented", and problems with the -4 and -6 command-line options.
Among the improvements are an alternative sorting algorithm which should allow
pdnsd to start up faster when reading a large cache file from disk, automatic
mapping of IPv4 to IPv6 addresses when running in IPv6 mode, somewhat more
efficient memory use, and better compression of the replies. Some of the new
features are described in the second half of this file (look for "new in version
1.1.11"). For the rest of the changes I will have to refer you to the ChangeLog.
For a short history about recent releases have a look at doc/html/index.html.
Since version 1.1.9 I've added some missing pieces to the documentation (the
manual doc/html/doc.html,doc/txt/manual.txt and the man page doc/pdnsd-ctl.8).
Version 1.1.11 finally has a man page doc/pdnsd.8, thanks to a contribution by
Mahesh T. Pai.
The first part of this file describes how to patch, compile, install and run
pdnsd. The second part describes some of the changes I've made to Thomas
Moestl's code.
Unless you're using the pre-patched source archive pdnsd-1.1.11-par.tar.gz you
must first apply my patch file pdnsd-1.1.11-par.diff.gz before compiling and
installing pdnsd according to Thomas Moestl's instructions described in the the
documentation. Use a freshly untarred copy of Thomas Moestl's original version
1.1.7a source, cd into the source directory pdnsd-1.1.7a and apply the command:
gzip -cd <path_to_patch>/pdnsd-1.1.11-par.diff.gz | patch -p2 -N -Z
Note: I have used GNU extensions so there may be some portability issues. I have
supplied alternatives for some of the less portable functions. There should be no
problem with most Linux distributions.
That's it! You should now be able to compile, install and run pdnsd. See the
documentation in doc/html/doc.html or doc/txt/manual.txt for more detailed
instructions.
Some people may want change the compiler optimization flag. I use the -O2 flag,
but it might be safer to use a lower level of optimization or no optimization at
all. In that case prefix the configure command with the desired compiler flags
like this (assuming you're using a bash shell):
CFLAGS="-O1 -g -Wall" ./configure ...
I have added a new configuration option "--with-thread-lib=<lib>", which you
should use if you experience problems with signal handling under Linux. The
usual symptom is failure by pdnsd to save the cache to disk, and
/var/cache/pdnsd/pdnsd.cache remaining empty. If you experience this kind of
trouble, try reconfiguring with different values for the --with-thread-lib
option. The allowable values are "linuxthreads" (the default), "linuxthreads2"
(or "lt2" for short), and "nptl". I recommend that you first configure and
compile without the --with-thread-lib option, then if you experience trouble try
again with --with-thread-lib=lt2 and recompile.
If your Linux system has an implementation of the Native POSIX Thread Library,
which is the case with Red Hat 9 for instance, you should use
--with-thread-lib=nptl .
Ideally, I would like to write a configure script which automatically detects
which kind of thread library is being used on a Linux system, but I don't have a
clue yet how to do this. If you can help me with this please write to me at the
email address listed at the end of this file.
The rest of this file describes some of the modifications I've made, but you
don't have to read it if you simply want to run pdnsd as you're used to.
- The main new feature I've added enables you to change the server addresses
that pdnsd uses at run-time using pdnsd-ctl. I've done this because the ISPs I
use do not specify fixed DNS server addresses, but expect their clients to use
dynamic DNS configuration (DHCP in the case of the cable connection, RFC1877
in case of isdn). I've extended the options that can be given with the
"server" command to pdnsd-ctl, to allow IP addresses to be specified as an
additional argument after "up|down|retest". This allows me to put something
like this in my ifup-local script:
pdnsd-ctl server isp-label up "$DNS1 $DNS2"
For more details how to use pdnsd-ctl read the updated documentation in
the doc/html directory. There is also a manpage for pdnsd-ctl.
This was quite tricky to implement because there might be pending queries
while the addresses are being changed. It certainly was an interesting
exercise in writing multi-threaded code for me.
- I've implemented a feature which allowed me to specify multiple IP addresses
per server section in the configuration file. This allowed for a much more
compact configuration file (3 server sections instead of 7 in my case),
because most configuration options are identical for servers belonging to the
same ISP. It also made the output of "pdnsd-ctl status" more compact. And it
was necessary to enable a satisfactory implementation of the previous feature.
Example of the new syntax:
ip = 123.456.789.001, 123.456.789.002, 123.456.789.003;
At the suggestion of Greg Norris server sections no longer have to specify IP
addresses. A server section without IP addresses will remain inactive until it
is assigned one more addresses at run-time with pdnsd-ctl.
- I've changed the implementation of dynamic arrays to make it slightly more
efficient, and improve type safety. I also got rid of several arrays of fixed
size in favor of dynamically allocated arrays. In particular, I got rid of
all occurrences of MAXPATH. I also made several static variables "automatic".
- The output of the "status" command of pdnsd-ctl now gives more meaningful
constant names "ping|none|if|exec" instead of numbers for the "uptest" option.
I've also added some information that was previously missing.
- I've fixed I a problem that caused pdnsd to use up a lot of CPU time and slow
down my system considerably when it received a query that took a long time to
resolve. It turned out that pdnsd can get into a "busy spin" when one of the
DNS servers pdnsd is querying refuses the connection. Apart from fixing this
bug, to speed things up additionally, I thought it would be a good idea to
mark a server down (without retesting it) after detecting errno==ECONNREFUSED.
This gives me very satisfactory performance, with the problematic server being
tried only once during every testing interval.
New in version 1.1.11: An additional busy spin condition, triggered when a
remote server answers with "Not Implemented", has been discovered and fixed.
In case there are remaining bugs in the multiplexing code, I've added a test
that checks if the number of events reported by poll/select matches the number
of events handled by pdnsd. If not, pdnsd will log an error message and give
up. Although the bugs still need to be reported and fixed, at least this
should prevent pdnsd from wasting CPU cycles.
- Due to a bug in Thomas' code, pdnsd tries, but fails, to remove the control
socket "pdnsd.status" before exiting. This has also been fixed. In version
1.1.8b1-par6 I have cleaned this up some more so that pdnsd will handle
situations where it can't open or bind the control socket more gracefully.
- I've rewritten some of the code that saves the contents of the cache to the
file "pdnsd.cache" just before pdnsd exits. This is because I noticed in my
logfiles that pdnsd occasionally had problems reading this file back at
startup. I eliminated the use of fseek() in Thomas' code. I could not find
anything that was demonstrably incorrect about his use of fseek(), but it
seemed better to me to do without it and write the file in a strictly
sequential order. Anyway, it turned out my hunch paid off: no more error
messages about "pdnsd.cache" in my logfile.
New in version 1.1.11: I've added some new code for sorting the queue used for
purging stale cache entries. This should allow pdnsd to start up faster when
reading large cache files from disk.
- I've extended the configuration options for policies of inclusion/exclusion
lists in server sections. The new policies options are "simple_only" and
"fqdn_only". Setting policy=simple_only will cause the server to used only for
simple hostnames if no other rule matches. On the other hand, setting
policy=fqdn_only will cause the server to be used only for fully qualified
domain names (i.e. the name has at least one dot in-between). I find these
options useful for controlling which name servers (if any) will be used by
pdnsd for simple host names.
- I've added a new "delegation_only" option that can be used to undo the
unwanted effects of DNS "wildcards". It works roughly as the feature by the
same name in BIND. It is turned off by default. To block Verisign's
Sitefinder, add the following line to the global section of the configuration
file:
delegation_only= com, net;
If you find that this feature blocks some legitimate domain names, you will
probably need to add the address of a nameserver that provides good authority
information. More information can be found at
http://www.phys.uu.nl/~rombouts/pdnsd/delegationonly.html
- It is no longer mandatory that domain names in the configuration file end in a
dot.
- The parser for configuration files has been rewritten purely in C, so (f)lex
and yacc/bison are no longer needed to build pdnsd.
It is no longer necessary to place strings between quotes in the configuration
file, unless a string contains a special character such as whitespace, a token
that normally starts a comment, or one of the characters ",;{}". Note that
these special characters are illegal in domain names anyway.
- New in version 1.1.11: Negating whole domains with a neg section in the
config file will result in all the subdomains being negated as well.
For example, adding the lines
neg {name=doubleclick.com; types=domain;}
neg {name=doubleclick.net; types=domain;}
will also negate ad.doubleclick.com, ad.fr.doubleclick.net, etc.
- New in version 1.1.11: When running in IPv6 mode, pdnsd will now automatically
map any IPv4 addresses it reads in the config file to IPv6 addresses.
When pdnsd has been compiled with IPv6 support and runs in IPv4 mode, it will
skip IPv6 addresses with a warning message. This may result in certain server
sections becoming inactive, though.
The -4 and -6 options should now work as advertised.
I've added two new command-line options, "-a" and "-i <prefix>".
With the -a flag pdnsd will try to detect automatically if IPv6 support is
available on a system, and fall back to IPv4 if not. The -a flag can be used
instead of -4 or -6.
The -i option can be used to specify a prefix for mapping IPv4 to IPv6
address. The default is ::ffff.0.0.0.0. There is also a corresponding
ipv4_6_prefix= option for the config file.
- New in version 1.1.11: I've slightly changed the way pdnsd does parallel
queries. Active queries or not canceled until we have received a useful
response from a remote name server, or all the queries have failed or timed
out. Thus the par_queries parameter is no longer the maximum number of
parallel queries, but rather the increment with which the number of parallel
queries is increased when the previous set has timed out. In the worst case
there will be pending queries to all the servers in the list of available
servers simultaneously. We may be wasting more system resources this way, but
the advantage is that we have a greater chance of catching a reply. After all,
if we wait longer anyway, why not for more servers.
I've also introduced a global timeout parameter. This is the minimum period of
time pdnsd will wait after sending the first query to a remote server before
giving up without having received a reply. The timeout options in the
configuration file are now only minimum timeout intervals. Setting the global
timeout option makes it possible to specify quite short timeout intervals in
the server sections. This will have the effect that pdnsd will start querying
additional servers fairly quickly if the first servers are slow to respond
(but will still continue to listen for responses from the first ones). This
may allow pdnsd to get an answer more quickly in certain situations.
After receiving a reply from a remote server the server is marked up and its
time stamp is updated. This will have the effect that pdnsd doesn't bother
testing this server for availability for a period of time, and thus the
overhead caused by testing is reduced. After server timeouts, uptests are
performed by the separate server status thread, not by threads that have to
answer queries. Unresponsive servers with uptest=ping will not be marked down
immediately any more, but only after the ping test has definitely failed.
I've also included a number of bug-fixes contained in a patch file supplied to
me by Thomas Moestl. In addition to the things I had already fixed, the
following issues are addressed: some memory leaks, dropping of root privileges
before calling uptest scripts in case pdnsd was started setuid root (which is a
bad idea anyway), passing on open fd's to uptests, integer overruns in the
status reporting code, fixing string passing from the lexer, more consistent
treatment of underscores in domain names.
In addition to the things I've listed above, I've made various little changes to
fix minor bugs, improve efficiency or elegance, or simply to suit my my own
coding style. These changes are too numerous to list here, but some of them are
listed in the ChangeLog. Of course if you are really interested in the
nitty-gritty you can always compare the source of my version with Thomas'
original code.
If you have any questions about the modifications I've made, you can send these
to <p.a.rombouts@home.nl>. Questions about the original pdnsd version should
be sent to <tmoestl@gmx.net> or <t.moestl@tu-bs.de>.

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This is a (hopefully complete) list of people I have to thank for helping me
develop and improve pdnsd:
David G. Andersen
Andrew M. Bishop
Daniel Black
Carsten Block
Stephan Boettcher
P.J. Bostley
Rodney Brown
Kevin A. Burton
Juliusz Chroboczek
Joachim Dorner
Frank Elsner
Christian Engstler
Stefan Erhardt
Bjoern Fischer
Stefan Förster
Bert Frederiks
Mike Hammer
Jonathan Hudson
Torben Janssen
Byrial Jensen
Olaf Kirch
Nikola Kotur
Kiyo Kelvin Lee
Bernd Leibing
Patrick Loschmidt
James MacLean
Sourav K. Mandal
Fraser McCrossan
Markus Mohr
Michael Müller
Gustavo Niemeyer
Alexandre Nunes
Wolfgang Ocker
Mahesh T. Pai
Bernhard Pelz
Soenke J. Peters
Erich Reitz
Paul A. Rombouts
Brian Schroeder
Roman Shterenzon
Daniel Smolik
Milan P. Stanic
Michael Steiner
Norbert Steinl
Andreas Steinmetz
Marko Stolle
Markus Storm
Michael Ströder
Thomas Stromberg
Alan Swanson
Lyonel Vincent
Eelco Vriezekolk
Paul Wagland
Sverker Wiberg
Michael Wiedmann
Ron Yorston
Nikita V. Youshchenko
Jan-Marek Glogowski
Thomas Cort
Pierre Habouzit
Dirk Armbrust
Georg Schwarz
Ashish Shukla

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- Implement a reference counter to ensure that newly entered records are not
purged immediately (really needed?)
- Perhaps do a two-step form of recursive query: first query those servers we
have got cached, then (if unsuccessful) look the others up and query again.
The impact of this optimisation may not be very big, because all sane servers
give A records for NS records if possible.
- Test for compatibility on other Unix-like Systems other than the BSDs and
Linux; rewrite the functions in netdev.c and icmp.c for those OSs if
necessary. Also try to get compatibility for other compilers than gcc.
- Write an install rule for the Slackware start-up script.
- Update the FAQ.
- Implement DNSSEC support. Since version 1.2.9, pdnsd is able to cache the RR
types necessary for DNSSEC, but the resolver is not yet security aware.
- Implement a lookup table (hash table) for queries in progress. This would
enable a thread that is resolving a query that is already being handled by
another thread to wait for that other thread to finish and copy its result
rather than independently query remote servers. It is very common for
resolvers to resend UDP queries if they don't get a reply within a timeout
period and if the answer is not yet cached, this will result in multiple
threads duplicating each others work in the current implementation.

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#ifndef _CONFIG_H_
#define _CONFIG_H_
/* ONLY EDIT acconfig.h, NEVER config.h or config.h.in!
* config.h MAY BE OVERWRITTEN BY make, config.h.in by autoheader! */
/* Define your Target here. Currently defined are TARGET_LINUX (any
* architecture), TARGET_BSD (experimental; tested on FreeBSD, hopefully
* works for other BSD variants) and TARGET_CYGWIN. */
#define TARGET TARGET_LINUX
/* change the #undef to #define if you do not want to compile with special
* ISDN support for Linux. Note that the ISDN support will not compile ok on
* unpatched kernerls earlier than 2.2.12 (if you did apply newer isdn patches,
* it may work fine). This is not on by default because it will cause compile
* problems on some systems */
#undef ISDN_SUPPORT
/* The following regulates the IP Protocol support. Supported types are IPv4
* and IPv6 (aka IPng). You may enable either or both of these protocols.
* Enabling in this context means that support for the respective protocol
* will be in the binary. When running the binary, one of the protocols may
* be activated via command line switches. Note that activating both IPv4 and
* IPv6 is pointless (and will not work because two UDP and two TCP threads
* will be started that concur for ports). Because of that, it is not allowed.
* When pdnsd runs with IPv6 activated it should be able to service queries
* from IPv6 as well as from IPv4 hosts, provided that you host is configured
* properly.
* For each of the protocols there are two options: ENABLE_IPV4 and ENABLE_IPV6
* control whether support for the respective protocol is available in the
* binary. DEFAULT_IPV4 selects which protocol is enabled on pdnsd
* startup by default. 1 means IPv4, while 0 means IPv6. If support for
* a protocol was included in the executable, you can specify command line
* parameters to activate or deactivate that protocol (the options are -4 and
* -6), but it makes more sense to use the run_ipv4=on/off option in the
* configuration file.
* Make your choice. Note that IPv6 support is experimental in pdnsd.
* In normal operation, you will currently only need IPv4. */
#undef ENABLE_IPV4
#define DEFAULT_IPV4 1
#undef ENABLE_IPV6
/* In all pdnsd versions before 1.0.6, DNS queries were always done over
* TCP. Now, you have the choice. You can control that behaviour using
* the -m command line switch, and you can give a preset here. There
* are 3 different modes:
* UDP_ONLY: This is undoubtedly the fastest query method, because
* no TCP negotiation needs to be done.
* TCP_ONLY: This is slower than uo, but generally more secure
* against DNS spoofing. Note that some name servers on the
* internet do not support TCP queries, notably dnscache.
* TCP_UDP: TCP, then UDP. If the TCP query fails with a "connection refused"-
* error or times out, the query is retried using UDP.
* UDP_TCP: UDP, then TCP. If the UDP reply is truncated (i.e. the tc flag is set),
* the query is retried using TCP. */
#define M_PRESET UDP_ONLY
/* In addition to choosing the presets, you may also completely disable
* one of the protocols (TCP for preset UDP_ONLY and UDP for preset TCP_ONLY).
* This saves some executable space. */
#undef NO_UDP_QUERIES
#undef NO_TCP_QUERIES
/* With the following option, you can disable the TCP server functionality
* of pdnsd. Nearly no program does TCP queries, so you probably can do
* this safely and save some executable space and one thread.
* You also can turn off the TCP server at runtime with the --notcp option. */
#undef NO_TCP_SERVER
/* By undefining the following, you can disable the UDP source address
* discovery code. This is not recommended, but you may need it when
* running into compilation problems. */
#undef SRC_ADDR_DISC
/* NO_POLL specifies not to use poll(2), but select(2) instead. If you are
* unsure about what this means, just leave this as it is.*/
#undef NO_POLL
/* Define this for "hard" RFC 2181 compliance: this RFC states that
* implementations should discard answers whose RR sets have multiple
* different time stamps. While correct answers are generated, incorrect
* ones are normally tolerated and corrected. Full RFC compliance is
* however only achieved by deactivating this behaviour and thus being
* intolerant. */
#undef RFC2181_ME_HARDER
/* Define this to the device you want to use for getting random numbers.
* Leave this undefined if you wand to use the standard C library random
* function, which basically should be sufficient.
* Linux and FreeBSD have two random number devices: /dev/random and
* /dev/urandom. /dev/urandom might be less secure in some cases, but
* should still be more than sufficient. The use of /dev/random is
* discouraged, as reading from this device blocks when new random bits
* need to be gathered. */
#undef RANDOM_DEVICE
#undef R_DEFAULT
#undef R_RANDOM
#undef R_ARC4RANDOM
/*#define RANDOM_DEVICE "/dev/urandom"*/
/* Designate which database manager to use for cacheing.
* default: native; others: gdbm */
#define CACHE_DBM DBM_NATIVE
#define CACHEDIR "/var/cache/pdnsd"
#define TEMPDIR "/tmp";
/* This is for various debugging facilities that produce debug output and
* double-check some values. You can enable debug messages with the -g option.
* Normally, you can switch this off safely by setting the number after DEBUG
* to 0. This will increase speed (although only marginally), save space
* in the executable (only about 12kB) and some stack space per thread
* (which may be significant if you have many threads running simultaneously).
* However, it may be an aid when debugging config files.
* The only defined debug levels by now are in the range 0 - 9.
* Define this to 9 if you want hex dumps of all the queries and replies pdnsd
* receives (you must also call pdnsd with -v9 to actually see the hex dumps).
* When in doubt, leave it defined to 1. */
#define DEBUG 1
/* This defines the default verbosity of informational messages you will get.
This has nothing to to with the debug option (-g), but may be set with -v
option. 0 is for normal operation, up to 3 for debugging.
Unlike the debug messages, these messages will also be written to the syslog.*/
#define VERBOSITY 0
/* Redefine this if you want another hash size.
* The number of hash buckets is computed as power of two (1<<HASH_SZ);
* so e.g. HASH_SZ set to 10 yields 1024 hash rows.
* HASH_SZ may not be bigger than 32 (if you set it even close to that value,
* you are nuts.) */
#define HASH_SZ 10
/* Set this to debug the hash tables. Turn this off normally, or you will get
* flooded with diagnostic messages */
#undef DEBUG_HASH
/* Define if you have working C99 Variadic macro support */
#undef CPP_C99_VARIADIC_MACROS
/* Define as int if socklen_t typedef is missing */
#undef socklen_t
/* Lock the UDP socket before using it? */
#undef SOCKET_LOCKING
/* Default TCP timeout when receiving queries */
#define TCP_TIMEOUT 30
/* Allow subsequent TCP queries on one connection? */
#undef TCP_SUBSEQ
/* Default value for parallel query number */
#define PAR_QUERIES 2
/* Maximum number of IP addresses used per nameserver obtained from NS records. */
#define MAXNAMESERVIPS 3
/* These are the possible targets. Normally no need to touch these
* definitions. */
#define TARGET_LINUX 0
#define TARGET_BSD 1
#define TARGET_CYGWIN 2
/* Assume the Native POSIX Thread Library instead of LinuxThreads ? */
#undef THREADLIB_NPTL
/* If we are using LinuxThreads, implement the fix needed for newer glibcs ? */
#undef THREADLIB_LINUXTHREADS2
/* The following is needed for using LinuxThreads. Better don't touch. */
#define _REENTRANT 1
#define _THREAD_SAFE 1
/* It appears the newer versions of gcc won't convert a pointer to char into
a pointer to unsigned char and vice versa without complaining.
By using casts these warning messages can be suppressed, but at the cost
of losing some type safety.
Define charp and ucharp to be empty if you are a developer and find type
safety more important.
Leave the definitions unchanged to avoid distracting warning messages. */
#define charp (char *)
#define ucharp (unsigned char *)
/* pdnsd version. DO NOT TOUCH THIS! It is replaced automatically by the
* contents of ./version */
#define VERSION "@VERSION@"
#endif

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#! /bin/sh
# Wrapper for compilers which do not understand `-c -o'.
scriptversion=2005-05-14.22
# Copyright (C) 1999, 2000, 2003, 2004, 2005 Free Software Foundation, Inc.
# Written by Tom Tromey <tromey@cygnus.com>.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.
# This file is maintained in Automake, please report
# bugs to <bug-automake@gnu.org> or send patches to
# <automake-patches@gnu.org>.
case $1 in
'')
echo "$0: No command. Try \`$0 --help' for more information." 1>&2
exit 1;
;;
-h | --h*)
cat <<\EOF
Usage: compile [--help] [--version] PROGRAM [ARGS]
Wrapper for compilers which do not understand `-c -o'.
Remove `-o dest.o' from ARGS, run PROGRAM with the remaining
arguments, and rename the output as expected.
If you are trying to build a whole package this is not the
right script to run: please start by reading the file `INSTALL'.
Report bugs to <bug-automake@gnu.org>.
EOF
exit $?
;;
-v | --v*)
echo "compile $scriptversion"
exit $?
;;
esac
ofile=
cfile=
eat=
for arg
do
if test -n "$eat"; then
eat=
else
case $1 in
-o)
# configure might choose to run compile as `compile cc -o foo foo.c'.
# So we strip `-o arg' only if arg is an object.
eat=1
case $2 in
*.o | *.obj)
ofile=$2
;;
*)
set x "$@" -o "$2"
shift
;;
esac
;;
*.c)
cfile=$1
set x "$@" "$1"
shift
;;
*)
set x "$@" "$1"
shift
;;
esac
fi
shift
done
if test -z "$ofile" || test -z "$cfile"; then
# If no `-o' option was seen then we might have been invoked from a
# pattern rule where we don't need one. That is ok -- this is a
# normal compilation that the losing compiler can handle. If no
# `.c' file was seen then we are probably linking. That is also
# ok.
exec "$@"
fi
# Name of file we expect compiler to create.
cofile=`echo "$cfile" | sed -e 's|^.*/||' -e 's/\.c$/.o/'`
# Create the lock directory.
# Note: use `[/.-]' here to ensure that we don't use the same name
# that we are using for the .o file. Also, base the name on the expected
# object file name, since that is what matters with a parallel build.
lockdir=`echo "$cofile" | sed -e 's|[/.-]|_|g'`.d
while true; do
if mkdir "$lockdir" >/dev/null 2>&1; then
break
fi
sleep 1
done
# FIXME: race condition here if user kills between mkdir and trap.
trap "rmdir '$lockdir'; exit 1" 1 2 15
# Run the compile.
"$@"
ret=$?
if test -f "$cofile"; then
mv "$cofile" "$ofile"
elif test -f "${cofile}bj"; then
mv "${cofile}bj" "$ofile"
fi
rmdir "$lockdir"
exit $ret
# Local Variables:
# mode: shell-script
# sh-indentation: 2
# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-end: "$"
# End:

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/* config.h. Generated from config.h.in by configure. */
/* config.h.in. Generated from configure.in by autoheader. */
#ifndef _CONFIG_H_
#define _CONFIG_H_
/* ONLY EDIT acconfig.h, NEVER config.h or config.h.in!
* config.h MAY BE OVERWRITTEN BY make, config.h.in by autoheader! */
/* Define your Target here. Currently defined are TARGET_LINUX (any
* architecture), TARGET_BSD (experimental; tested on FreeBSD, hopefully
* works for other BSD variants) and TARGET_CYGWIN. */
#define TARGET TARGET_LINUX
/* change the #undef to #define if you do not want to compile with special
* ISDN support for Linux. Note that the ISDN support will not compile ok on
* unpatched kernerls earlier than 2.2.12 (if you did apply newer isdn patches,
* it may work fine). This is not on by default because it will cause compile
* problems on some systems */
/* #undef ISDN_SUPPORT */
/* The following regulates the IP Protocol support. Supported types are IPv4
* and IPv6 (aka IPng). You may enable either or both of these protocols.
* Enabling in this context means that support for the respective protocol
* will be in the binary. When running the binary, one of the protocols may
* be activated via command line switches. Note that activating both IPv4 and
* IPv6 is pointless (and will not work because two UDP and two TCP threads
* will be started that concur for ports). Because of that, it is not allowed.
* When pdnsd runs with IPv6 activated it should be able to service queries
* from IPv6 as well as from IPv4 hosts, provided that you host is configured
* properly.
* For each of the protocols there are two options: ENABLE_IPV4 and ENABLE_IPV6
* control whether support for the respective protocol is available in the
* binary. DEFAULT_IPV4 selects which protocol is enabled on pdnsd
* startup by default. 1 means IPv4, while 0 means IPv6. If support for
* a protocol was included in the executable, you can specify command line
* parameters to activate or deactivate that protocol (the options are -4 and
* -6), but it makes more sense to use the run_ipv4=on/off option in the
* configuration file.
* Make your choice. Note that IPv6 support is experimental in pdnsd.
* In normal operation, you will currently only need IPv4. */
#define ENABLE_IPV4 1
#define DEFAULT_IPV4 1
#undef ENABLE_IPV6
/* In all pdnsd versions before 1.0.6, DNS queries were always done over
* TCP. Now, you have the choice. You can control that behaviour using
* the -m command line switch, and you can give a preset here. There
* are 3 different modes:
* UDP_ONLY: This is undoubtedly the fastest query method, because
* no TCP negotiation needs to be done.
* TCP_ONLY: This is slower than uo, but generally more secure
* against DNS spoofing. Note that some name servers on the
* internet do not support TCP queries, notably dnscache.
* TCP_UDP: TCP, then UDP. If the TCP query fails with a "connection refused"-
* error or times out, the query is retried using UDP.
* UDP_TCP: UDP, then TCP. If the UDP reply is truncated (i.e. the tc flag is set),
* the query is retried using TCP. */
#define M_PRESET TCP_ONLY
/* In addition to choosing the presets, you may also completely disable
* one of the protocols (TCP for preset UDP_ONLY and UDP for preset TCP_ONLY).
* This saves some executable space. */
/* #undef NO_UDP_QUERIES */
/* #undef NO_TCP_QUERIES */
/* With the following option, you can disable the TCP server functionality
* of pdnsd. Nearly no program does TCP queries, so you probably can do
* this safely and save some executable space and one thread.
* You also can turn off the TCP server at runtime with the --notcp option. */
/* #undef NO_TCP_SERVER */
/* By undefining the following, you can disable the UDP source address
* discovery code. This is not recommended, but you may need it when
* running into compilation problems. */
#define SRC_ADDR_DISC 1
/* NO_POLL specifies not to use poll(2), but select(2) instead. If you are
* unsure about what this means, just leave this as it is.*/
/* #undef NO_POLL */
/* Define this for "hard" RFC 2181 compliance: this RFC states that
* implementations should discard answers whose RR sets have multiple
* different time stamps. While correct answers are generated, incorrect
* ones are normally tolerated and corrected. Full RFC compliance is
* however only achieved by deactivating this behaviour and thus being
* intolerant. */
/* #undef RFC2181_ME_HARDER */
/* Define this to the device you want to use for getting random numbers.
* Leave this undefined if you wand to use the standard C library random
* function, which basically should be sufficient.
* Linux and FreeBSD have two random number devices: /dev/random and
* /dev/urandom. /dev/urandom might be less secure in some cases, but
* should still be more than sufficient. The use of /dev/random is
* discouraged, as reading from this device blocks when new random bits
* need to be gathered. */
/* #undef RANDOM_DEVICE */
#define R_DEFAULT 1
/* #undef R_RANDOM */
/* #undef R_ARC4RANDOM */
/*#define RANDOM_DEVICE "/dev/urandom"*/
/* Designate which database manager to use for cacheing.
* default: native; others: gdbm */
#define CACHE_DBM DBM_NATIVE
#define CONFDIR "/data/data/net.typeblog.socks"
#define CACHEDIR "/data/data/net.typeblog.socks"
#define TEMPDIR "/data/data/net.typeblog.socks/cache";
/* This is for various debugging facilities that produce debug output and
* double-check some values. You can enable debug messages with the -g option.
* Normally, you can switch this off safely by setting the number after DEBUG
* to 0. This will increase speed (although only marginally), save space
* in the executable (only about 12kB) and some stack space per thread
* (which may be significant if you have many threads running simultaneously).
* However, it may be an aid when debugging config files.
* The only defined debug levels by now are in the range 0 - 9.
* Define this to 9 if you want hex dumps of all the queries and replies pdnsd
* receives (you must also call pdnsd with -v9 to actually see the hex dumps).
* When in doubt, leave it defined to 1. */
#define DEBUG 1
/* This defines the default verbosity of informational messages you will get.
This has nothing to to with the debug option (-g), but may be set with -v
option. 0 is for normal operation, up to 3 for debugging.
Unlike the debug messages, these messages will also be written to the syslog.*/
#define VERBOSITY 0
/* Redefine this if you want another hash size.
* The number of hash buckets is computed as power of two (1<<HASH_SZ);
* so e.g. HASH_SZ set to 10 yields 1024 hash rows.
* HASH_SZ may not be bigger than 32 (if you set it even close to that value,
* you are nuts.) */
#define HASH_SZ 10
/* Set this to debug the hash tables. Turn this off normally, or you will get
* flooded with diagnostic messages */
/* #undef DEBUG_HASH */
/* Define if you have working C99 Variadic macro support */
#define CPP_C99_VARIADIC_MACROS 1
/* Define as int if socklen_t typedef is missing */
/* #undef socklen_t */
/* Lock the UDP socket before using it? */
/* #undef SOCKET_LOCKING */
/* Default TCP timeout when receiving queries */
#define TCP_TIMEOUT 5
/* Allow subsequent TCP queries on one connection? */
/* #undef TCP_SUBSEQ */
/* Default value for parallel query number */
#define PAR_QUERIES 4
/* Maximum number of IP addresses used per nameserver obtained from NS records. */
#define MAXNAMESERVIPS 3
/* These are the possible targets. Normally no need to touch these
* definitions. */
#define TARGET_LINUX 0
#define TARGET_BSD 1
#define TARGET_CYGWIN 2
/* Assume the Native POSIX Thread Library instead of LinuxThreads ? */
#define THREADLIB_NPTL 1
/* If we are using LinuxThreads, implement the fix needed for newer glibcs ? */
/* #undef THREADLIB_LINUXTHREADS2 */
/* The following is needed for using LinuxThreads. Better don't touch. */
#define _REENTRANT 1
#define _THREAD_SAFE 1
/* It appears the newer versions of gcc won't convert a pointer to char into
a pointer to unsigned char and vice versa without complaining.
By using casts these warning messages can be suppressed, but at the cost
of losing some type safety.
Define charp and ucharp to be empty if you are a developer and find type
safety more important.
Leave the definitions unchanged to avoid distracting warning messages. */
#define charp (char *)
#define ucharp (unsigned char *)
/* pdnsd version. DO NOT TOUCH THIS! It is replaced automatically by the
* contents of ./version */
#define VERSION "1.2.9a-par"
#endif
/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
systems. This function is required for `alloca.c' support on those systems.
*/
/* #undef CRAY_STACKSEG_END */
/* Define to 1 if using `alloca.c'. */
/* #undef C_ALLOCA */
/* Define to 1 if you have `alloca', as a function or macro. */
#define HAVE_ALLOCA 1
/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
*/
#define HAVE_ALLOCA_H 1
/* Define to 1 if you have the `asprintf' function. */
#define HAVE_ASPRINTF 1
/* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */
/* #undef HAVE_DOPRNT */
/* Define to 1 if you have the <fcntl.h> header file. */
#define HAVE_FCNTL_H 1
/* Define to 1 if you have the `getline' function. */
#if defined(__aarch64__) || defined(__x86_64__)
#define HAVE_GETLINE 1
#endif
/* Define to 1 if you have the `getpwnam_r' function. */
//#define HAVE_GETPWNAM_R 1
/* Define to 1 if you have the `gettimeofday' function. */
#define HAVE_GETTIMEOFDAY 1
/* Define to 1 if you have the `inet_ntop' function. */
#define HAVE_INET_NTOP 1
/* Define to 1 if you have the `inet_pton' function. */
#define HAVE_INET_PTON 1
/* Define to 1 if you have the <inttypes.h> header file. */
#define HAVE_INTTYPES_H 1
/* Define to 1 if you have the `pthread' library (-lpthread). */
#define HAVE_LIBPTHREAD 1
/* Define to 1 if you have the <malloc.h> header file. */
#define HAVE_MALLOC_H 1
/* Define to 1 if you have the <memory.h> header file. */
#define HAVE_MEMORY_H 1
/* Define to 1 if you have the `mempcpy' function. */
//#define HAVE_MEMPCPY 1
/* Define to 1 if you have the `mkfifo' function. */
#define HAVE_MKFIFO 1
/* Define to 1 if you have the `nanosleep' function. */
#define HAVE_NANOSLEEP 1
/* Define to 1 if you have the <netinet/in.h> header file. */
#define HAVE_NETINET_IN_H 1
/* Define to 1 if you have the <net/if.h> header file. */
#define HAVE_NET_IF_H 1
/* Define to 1 if you have the `poll' function. */
#define HAVE_POLL 1
/* Define to 1 if you have the `select' function. */
#define HAVE_SELECT 1
/* Define to 1 if you have the `snprintf' function. */
#define HAVE_SNPRINTF 1
/* Define to 1 if you have the `socket' function. */
#define HAVE_SOCKET 1
/* Define to 1 if the system has the type `socklen_t'. */
#define HAVE_SOCKLEN_T 1
/* Define to 1 if you have the <stdint.h> header file. */
#define HAVE_STDINT_H 1
/* Define to 1 if you have the <stdlib.h> header file. */
#define HAVE_STDLIB_H 1
/* Define to 1 if you have the `stpcpy' function. */
#if defined(__aarch64__) || defined(__x86_64__)
#define HAVE_STPCPY 1
#endif
/* Define to 1 if you have the `stpncpy' function. */
//#define HAVE_STPNCPY 1
/* Define to 1 if you have the `strdup' function. */
#define HAVE_STRDUP 1
/* Define to 1 if you have the `strerror' function. */
#define HAVE_STRERROR 1
/* Define to 1 if you have the <strings.h> header file. */
#define HAVE_STRINGS_H 1
/* Define to 1 if you have the <string.h> header file. */
#define HAVE_STRING_H 1
/* Define to 1 if you have the `strlcpy' function. */
/* #undef HAVE_STRLCPY */
/* Define to 1 if you have the `strndup' function. */
#define HAVE_STRNDUP 1
/* Define to 1 if the system has the type `struct ifreq'. */
#define HAVE_STRUCT_IFREQ 1
/* Define to 1 if the system has the type `struct in6_addr'. */
#define HAVE_STRUCT_IN6_ADDR 1
/* Define to 1 if the system has the type `struct in_pktinfo'. */
#define HAVE_STRUCT_IN_PKTINFO 1
/* Define to 1 if you have the <syslog.h> header file. */
#define HAVE_SYSLOG_H 1
/* Define to 1 if you have the <sys/ioctl.h> header file. */
#define HAVE_SYS_IOCTL_H 1
/* Define to 1 if you have the <sys/poll.h> header file. */
#define HAVE_SYS_POLL_H 1
/* Define to 1 if you have the <sys/socket.h> header file. */
#define HAVE_SYS_SOCKET_H 1
/* Define to 1 if you have the <sys/stat.h> header file. */
#define HAVE_SYS_STAT_H 1
/* Define to 1 if you have the <sys/time.h> header file. */
#define HAVE_SYS_TIME_H 1
/* Define to 1 if you have the <sys/types.h> header file. */
#define HAVE_SYS_TYPES_H 1
/* Define to 1 if you have <sys/wait.h> that is POSIX.1 compatible. */
#define HAVE_SYS_WAIT_H 1
/* Define to 1 if you have the `uname' function. */
#define HAVE_UNAME 1
/* Define to 1 if you have the <unistd.h> header file. */
#define HAVE_UNISTD_H 1
/* Define to 1 if you have the `vasprintf' function. */
#define HAVE_VASPRINTF 1
/* Define to 1 if you have the `vprintf' function. */
#define HAVE_VPRINTF 1
/* Define to 1 if you have the `vsnprintf' function. */
#define HAVE_VSNPRINTF 1
/* Define to 1 if your C compiler doesn't accept -c and -o together. */
/* #undef NO_MINUS_C_MINUS_O */
/* Define to the address where bug reports for this package should be sent. */
#define PACKAGE_BUGREPORT ""
/* Define to the full name of this package. */
#define PACKAGE_NAME ""
/* Define to the full name and version of this package. */
#define PACKAGE_STRING ""
/* Define to the one symbol short name of this package. */
#define PACKAGE_TARNAME ""
/* Define to the version of this package. */
#define PACKAGE_VERSION ""
/* Define as the return type of signal handlers (`int' or `void'). */
#define RETSIGTYPE void
/* If using the C implementation of alloca, define if you know the
direction of stack growth for your system; otherwise it will be
automatically deduced at runtime.
STACK_DIRECTION > 0 => grows toward higher addresses
STACK_DIRECTION < 0 => grows toward lower addresses
STACK_DIRECTION = 0 => direction of growth unknown */
/* #undef STACK_DIRECTION */
/* Define to 1 if you have the ANSI C header files. */
#define STDC_HEADERS 1
/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
#define TIME_WITH_SYS_TIME 1
/* Define to 1 if your <sys/time.h> declares `struct tm'. */
/* #undef TM_IN_SYS_TIME */
/* Enable extensions on AIX 3, Interix. */
#ifndef _ALL_SOURCE
# define _ALL_SOURCE 1
#endif
/* Enable GNU extensions on systems that have them. */
#ifndef _GNU_SOURCE
# define _GNU_SOURCE 1
#endif
/* Enable threading extensions on Solaris. */
#ifndef _POSIX_PTHREAD_SEMANTICS
# define _POSIX_PTHREAD_SEMANTICS 1
#endif
/* Enable extensions on HP NonStop. */
#ifndef _TANDEM_SOURCE
# define _TANDEM_SOURCE 1
#endif
/* Enable general extensions on Solaris. */
#ifndef __EXTENSIONS__
# define __EXTENSIONS__ 1
#endif
/* Define to 1 if on MINIX. */
/* #undef _MINIX */
/* Define to 2 if the system does not provide POSIX.1 features except with
this defined. */
/* #undef _POSIX_1_SOURCE */
/* Define to 1 if you need to in order for `stat' and other things to work. */
/* #undef _POSIX_SOURCE */
/* Define to empty if `const' does not conform to ANSI C. */
/* #undef const */
/* Define to `int' if <sys/types.h> does not define. */
/* #undef pid_t */
/* Define to `unsigned int' if <sys/types.h> does not define. */
/* #undef size_t */

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app/src/main/jni/pdnsd/config.h.in Normal file
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/* config.h.in. Generated from configure.in by autoheader. */
#ifndef _CONFIG_H_
#define _CONFIG_H_
/* ONLY EDIT acconfig.h, NEVER config.h or config.h.in!
* config.h MAY BE OVERWRITTEN BY make, config.h.in by autoheader! */
/* Define your Target here. Currently defined are TARGET_LINUX (any
* architecture), TARGET_BSD (experimental; tested on FreeBSD, hopefully
* works for other BSD variants) and TARGET_CYGWIN. */
#define TARGET TARGET_LINUX
/* change the #undef to #define if you do not want to compile with special
* ISDN support for Linux. Note that the ISDN support will not compile ok on
* unpatched kernerls earlier than 2.2.12 (if you did apply newer isdn patches,
* it may work fine). This is not on by default because it will cause compile
* problems on some systems */
#undef ISDN_SUPPORT
/* The following regulates the IP Protocol support. Supported types are IPv4
* and IPv6 (aka IPng). You may enable either or both of these protocols.
* Enabling in this context means that support for the respective protocol
* will be in the binary. When running the binary, one of the protocols may
* be activated via command line switches. Note that activating both IPv4 and
* IPv6 is pointless (and will not work because two UDP and two TCP threads
* will be started that concur for ports). Because of that, it is not allowed.
* When pdnsd runs with IPv6 activated it should be able to service queries
* from IPv6 as well as from IPv4 hosts, provided that you host is configured
* properly.
* For each of the protocols there are two options: ENABLE_IPV4 and ENABLE_IPV6
* control whether support for the respective protocol is available in the
* binary. DEFAULT_IPV4 selects which protocol is enabled on pdnsd
* startup by default. 1 means IPv4, while 0 means IPv6. If support for
* a protocol was included in the executable, you can specify command line
* parameters to activate or deactivate that protocol (the options are -4 and
* -6), but it makes more sense to use the run_ipv4=on/off option in the
* configuration file.
* Make your choice. Note that IPv6 support is experimental in pdnsd.
* In normal operation, you will currently only need IPv4. */
#undef ENABLE_IPV4
#define DEFAULT_IPV4 1
#undef ENABLE_IPV6
/* In all pdnsd versions before 1.0.6, DNS queries were always done over
* TCP. Now, you have the choice. You can control that behaviour using
* the -m command line switch, and you can give a preset here. There
* are 3 different modes:
* UDP_ONLY: This is undoubtedly the fastest query method, because
* no TCP negotiation needs to be done.
* TCP_ONLY: This is slower than uo, but generally more secure
* against DNS spoofing. Note that some name servers on the
* internet do not support TCP queries, notably dnscache.
* TCP_UDP: TCP, then UDP. If the TCP query fails with a "connection refused"-
* error or times out, the query is retried using UDP.
* UDP_TCP: UDP, then TCP. If the UDP reply is truncated (i.e. the tc flag is set),
* the query is retried using TCP. */
#define M_PRESET UDP_ONLY
/* In addition to choosing the presets, you may also completely disable
* one of the protocols (TCP for preset UDP_ONLY and UDP for preset TCP_ONLY).
* This saves some executable space. */
#undef NO_UDP_QUERIES
#undef NO_TCP_QUERIES
/* With the following option, you can disable the TCP server functionality
* of pdnsd. Nearly no program does TCP queries, so you probably can do
* this safely and save some executable space and one thread.
* You also can turn off the TCP server at runtime with the --notcp option. */
#undef NO_TCP_SERVER
/* By undefining the following, you can disable the UDP source address
* discovery code. This is not recommended, but you may need it when
* running into compilation problems. */
#undef SRC_ADDR_DISC
/* NO_POLL specifies not to use poll(2), but select(2) instead. If you are
* unsure about what this means, just leave this as it is.*/
#undef NO_POLL
/* Define this for "hard" RFC 2181 compliance: this RFC states that
* implementations should discard answers whose RR sets have multiple
* different time stamps. While correct answers are generated, incorrect
* ones are normally tolerated and corrected. Full RFC compliance is
* however only achieved by deactivating this behaviour and thus being
* intolerant. */
#undef RFC2181_ME_HARDER
/* Define this to the device you want to use for getting random numbers.
* Leave this undefined if you wand to use the standard C library random
* function, which basically should be sufficient.
* Linux and FreeBSD have two random number devices: /dev/random and
* /dev/urandom. /dev/urandom might be less secure in some cases, but
* should still be more than sufficient. The use of /dev/random is
* discouraged, as reading from this device blocks when new random bits
* need to be gathered. */
#undef RANDOM_DEVICE
#undef R_DEFAULT
#undef R_RANDOM
#undef R_ARC4RANDOM
/*#define RANDOM_DEVICE "/dev/urandom"*/
/* Designate which database manager to use for cacheing.
* default: native; others: gdbm */
#define CACHE_DBM DBM_NATIVE
#define CACHEDIR "/var/cache/pdnsd"
#define TEMPDIR "/tmp";
/* This is for various debugging facilities that produce debug output and
* double-check some values. You can enable debug messages with the -g option.
* Normally, you can switch this off safely by setting the number after DEBUG
* to 0. This will increase speed (although only marginally), save space
* in the executable (only about 12kB) and some stack space per thread
* (which may be significant if you have many threads running simultaneously).
* However, it may be an aid when debugging config files.
* The only defined debug levels by now are in the range 0 - 9.
* Define this to 9 if you want hex dumps of all the queries and replies pdnsd
* receives (you must also call pdnsd with -v9 to actually see the hex dumps).
* When in doubt, leave it defined to 1. */
#define DEBUG 1
/* This defines the default verbosity of informational messages you will get.
This has nothing to to with the debug option (-g), but may be set with -v
option. 0 is for normal operation, up to 3 for debugging.
Unlike the debug messages, these messages will also be written to the syslog.*/
#define VERBOSITY 0
/* Redefine this if you want another hash size.
* The number of hash buckets is computed as power of two (1<<HASH_SZ);
* so e.g. HASH_SZ set to 10 yields 1024 hash rows.
* HASH_SZ may not be bigger than 32 (if you set it even close to that value,
* you are nuts.) */
#define HASH_SZ 10
/* Set this to debug the hash tables. Turn this off normally, or you will get
* flooded with diagnostic messages */
#undef DEBUG_HASH
/* Define if you have working C99 Variadic macro support */
#undef CPP_C99_VARIADIC_MACROS
/* Define as int if socklen_t typedef is missing */
#undef socklen_t
/* Lock the UDP socket before using it? */
#undef SOCKET_LOCKING
/* Default TCP timeout when receiving queries */
#define TCP_TIMEOUT 30
/* Allow subsequent TCP queries on one connection? */
#undef TCP_SUBSEQ
/* Default value for parallel query number */
#define PAR_QUERIES 2
/* Maximum number of IP addresses used per nameserver obtained from NS records. */
#define MAXNAMESERVIPS 3
/* These are the possible targets. Normally no need to touch these
* definitions. */
#define TARGET_LINUX 0
#define TARGET_BSD 1
#define TARGET_CYGWIN 2
/* Assume the Native POSIX Thread Library instead of LinuxThreads ? */
#undef THREADLIB_NPTL
/* If we are using LinuxThreads, implement the fix needed for newer glibcs ? */
#undef THREADLIB_LINUXTHREADS2
/* The following is needed for using LinuxThreads. Better don't touch. */
#define _REENTRANT 1
#define _THREAD_SAFE 1
/* It appears the newer versions of gcc won't convert a pointer to char into
a pointer to unsigned char and vice versa without complaining.
By using casts these warning messages can be suppressed, but at the cost
of losing some type safety.
Define charp and ucharp to be empty if you are a developer and find type
safety more important.
Leave the definitions unchanged to avoid distracting warning messages. */
#define charp (char *)
#define ucharp (unsigned char *)
/* pdnsd version. DO NOT TOUCH THIS! It is replaced automatically by the
* contents of ./version */
#define VERSION "@VERSION@"
#endif
/* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
systems. This function is required for `alloca.c' support on those systems.
*/
#undef CRAY_STACKSEG_END
/* Define to 1 if using `alloca.c'. */
#undef C_ALLOCA
/* Define to 1 if you have `alloca', as a function or macro. */
#undef HAVE_ALLOCA
/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
*/
#undef HAVE_ALLOCA_H
/* Define to 1 if you have the `asprintf' function. */
#undef HAVE_ASPRINTF
/* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */
#undef HAVE_DOPRNT
/* Define to 1 if you have the <fcntl.h> header file. */
#undef HAVE_FCNTL_H
/* Define to 1 if you have the `getline' function. */
#undef HAVE_GETLINE
/* Define to 1 if you have the `getpwnam_r' function. */
#undef HAVE_GETPWNAM_R
/* Define to 1 if you have the `gettimeofday' function. */
#undef HAVE_GETTIMEOFDAY
/* Define to 1 if you have the `inet_ntop' function. */
#undef HAVE_INET_NTOP
/* Define to 1 if you have the `inet_pton' function. */
#undef HAVE_INET_PTON
/* Define to 1 if you have the <inttypes.h> header file. */
#undef HAVE_INTTYPES_H
/* Define to 1 if you have the `pthread' library (-lpthread). */
#undef HAVE_LIBPTHREAD
/* Define to 1 if you have the <malloc.h> header file. */
#undef HAVE_MALLOC_H
/* Define to 1 if you have the <memory.h> header file. */
#undef HAVE_MEMORY_H
/* Define to 1 if you have the `mempcpy' function. */
#undef HAVE_MEMPCPY
/* Define to 1 if you have the `mkfifo' function. */
#undef HAVE_MKFIFO
/* Define to 1 if you have the `nanosleep' function. */
#undef HAVE_NANOSLEEP
/* Define to 1 if you have the <netinet/in.h> header file. */
#undef HAVE_NETINET_IN_H
/* Define to 1 if you have the <net/if.h> header file. */
#undef HAVE_NET_IF_H
/* Define to 1 if you have the `poll' function. */
#undef HAVE_POLL
/* Define to 1 if you have the `select' function. */
#undef HAVE_SELECT
/* Define to 1 if you have the `snprintf' function. */
#undef HAVE_SNPRINTF
/* Define to 1 if you have the `socket' function. */
#undef HAVE_SOCKET
/* Define to 1 if the system has the type `socklen_t'. */
#undef HAVE_SOCKLEN_T
/* Define to 1 if you have the <stdint.h> header file. */
#undef HAVE_STDINT_H
/* Define to 1 if you have the <stdlib.h> header file. */
#undef HAVE_STDLIB_H
/* Define to 1 if you have the `stpcpy' function. */
#undef HAVE_STPCPY
/* Define to 1 if you have the `stpncpy' function. */
#undef HAVE_STPNCPY
/* Define to 1 if you have the `strdup' function. */
#undef HAVE_STRDUP
/* Define to 1 if you have the `strerror' function. */
#undef HAVE_STRERROR
/* Define to 1 if you have the <strings.h> header file. */
#undef HAVE_STRINGS_H
/* Define to 1 if you have the <string.h> header file. */
#undef HAVE_STRING_H
/* Define to 1 if you have the `strlcpy' function. */
#undef HAVE_STRLCPY
/* Define to 1 if you have the `strndup' function. */
#undef HAVE_STRNDUP
/* Define to 1 if the system has the type `struct ifreq'. */
#undef HAVE_STRUCT_IFREQ
/* Define to 1 if the system has the type `struct in6_addr'. */
#undef HAVE_STRUCT_IN6_ADDR
/* Define to 1 if the system has the type `struct in_pktinfo'. */
#undef HAVE_STRUCT_IN_PKTINFO
/* Define to 1 if you have the <syslog.h> header file. */
#undef HAVE_SYSLOG_H
/* Define to 1 if you have the <sys/ioctl.h> header file. */
#undef HAVE_SYS_IOCTL_H
/* Define to 1 if you have the <sys/poll.h> header file. */
#undef HAVE_SYS_POLL_H
/* Define to 1 if you have the <sys/socket.h> header file. */
#undef HAVE_SYS_SOCKET_H
/* Define to 1 if you have the <sys/stat.h> header file. */
#undef HAVE_SYS_STAT_H
/* Define to 1 if you have the <sys/time.h> header file. */
#undef HAVE_SYS_TIME_H
/* Define to 1 if you have the <sys/types.h> header file. */
#undef HAVE_SYS_TYPES_H
/* Define to 1 if you have <sys/wait.h> that is POSIX.1 compatible. */
#undef HAVE_SYS_WAIT_H
/* Define to 1 if you have the `uname' function. */
#undef HAVE_UNAME
/* Define to 1 if you have the <unistd.h> header file. */
#undef HAVE_UNISTD_H
/* Define to 1 if you have the `vasprintf' function. */
#undef HAVE_VASPRINTF
/* Define to 1 if you have the `vprintf' function. */
#undef HAVE_VPRINTF
/* Define to 1 if you have the `vsnprintf' function. */
#undef HAVE_VSNPRINTF
/* Define to 1 if your C compiler doesn't accept -c and -o together. */
#undef NO_MINUS_C_MINUS_O
/* Define to the address where bug reports for this package should be sent. */
#undef PACKAGE_BUGREPORT
/* Define to the full name of this package. */
#undef PACKAGE_NAME
/* Define to the full name and version of this package. */
#undef PACKAGE_STRING
/* Define to the one symbol short name of this package. */
#undef PACKAGE_TARNAME
/* Define to the version of this package. */
#undef PACKAGE_VERSION
/* Define as the return type of signal handlers (`int' or `void'). */
#undef RETSIGTYPE
/* If using the C implementation of alloca, define if you know the
direction of stack growth for your system; otherwise it will be
automatically deduced at runtime.
STACK_DIRECTION > 0 => grows toward higher addresses
STACK_DIRECTION < 0 => grows toward lower addresses
STACK_DIRECTION = 0 => direction of growth unknown */
#undef STACK_DIRECTION
/* Define to 1 if you have the ANSI C header files. */
#undef STDC_HEADERS
/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
#undef TIME_WITH_SYS_TIME
/* Define to 1 if your <sys/time.h> declares `struct tm'. */
#undef TM_IN_SYS_TIME
/* Enable extensions on AIX 3, Interix. */
#ifndef _ALL_SOURCE
# undef _ALL_SOURCE
#endif
/* Enable GNU extensions on systems that have them. */
#ifndef _GNU_SOURCE
# undef _GNU_SOURCE
#endif
/* Enable threading extensions on Solaris. */
#ifndef _POSIX_PTHREAD_SEMANTICS
# undef _POSIX_PTHREAD_SEMANTICS
#endif
/* Enable extensions on HP NonStop. */
#ifndef _TANDEM_SOURCE
# undef _TANDEM_SOURCE
#endif
/* Enable general extensions on Solaris. */
#ifndef __EXTENSIONS__
# undef __EXTENSIONS__
#endif
/* Define to 1 if on MINIX. */
#undef _MINIX
/* Define to 2 if the system does not provide POSIX.1 features except with
this defined. */
#undef _POSIX_1_SOURCE
/* Define to 1 if you need to in order for `stat' and other things to work. */
#undef _POSIX_SOURCE
/* Define to empty if `const' does not conform to ANSI C. */
#undef const
/* Define to `int' if <sys/types.h> does not define. */
#undef pid_t
/* Define to `unsigned int' if <sys/types.h> does not define. */
#undef size_t

11389
app/src/main/jni/pdnsd/configure vendored Normal file
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app/src/main/jni/pdnsd/configure.in Normal file
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dnl Process this file with autoconf to produce a configure script.
AC_INIT(src)
package="pdnsd"
version=`cut -d - -f 1 "$srcdir"/version`
fullversion=`cat "$srcdir"/version`
packagerelease=`cut -d - -f 2- "$srcdir"/version`
distribution="Generic"
target="autodetect"
cachedir="/var/cache/$package"
ipv4_default=1
have_ipv4="yes"
#newrrs="yes"
query_m="udponly"
have_tcp_server="yes"
adisc="default"
slock="no";
def_id="nobody"
#have_rcsids="no"
udp_queries="yes"
tcp_queries="yes"
tempdir="/tmp"
randomdev=default
freebsd_pthread="4"
specbuild=no
threadlib=default
AM_INIT_AUTOMAKE($package, $version, [no-define])
AM_CONFIG_HEADER(config.h)
AC_GNU_SOURCE
AC_DEFINE_UNQUOTED(VERSION,"$fullversion")
AC_SUBST(fullversion)
AC_SUBST(packagerelease)
AC_ARG_WITH(distribution,
[ --with-distribution=distro Specify target distribution (default=Generic;
others: RedHat, SuSE, Debian, ArchLinux)],
distribution=$withval)
AC_SUBST(distribution)
AC_ARG_WITH(target,
[ --with-target=platform Change compilation target platform (default:
autodetect; others: Linux, BSD, Cygwin)],
target=$withval)
case $target in
Linux|linux)
AC_DEFINE(TARGET, TARGET_LINUX)
target="Linux"
;;
BSD| bsd)
AC_DEFINE(TARGET, TARGET_BSD)
target="BSD"
;;
Cygwin|CYGWIN|cygwin)
AC_DEFINE(TARGET, TARGET_CYGWIN)
target="cygwin"
;;
autodetect)
;;
*)
AC_MSG_ERROR([--with-target must have Linux, BSD or Cygwin as parameter.])
;;
esac
AC_ARG_WITH(cachedir,
[ --with-cachedir=dir Default directory for pdnsd cache
(default=/var/cache/pdnsd)],
cachedir=$withval)
AC_DEFINE_UNQUOTED(CACHEDIR, "$cachedir")
AC_SUBST(cachedir)
AC_ARG_ENABLE(isdn,
[ --enable-isdn Enable ISDN support (may cause problems on
some systems; only for Linux)],
test $enableval = "yes" && AC_DEFINE(ISDN_SUPPORT))
AC_ARG_ENABLE(ipv4,
[ --disable-ipv4 Disable IPv4 networking support
(default=enabled)],
have_ipv4=$enableval)
test $have_ipv4 = "yes" && AC_DEFINE(ENABLE_IPV4)
AC_ARG_ENABLE(ipv6,
[ --enable-ipv6 Enable IPv6 networking support],
[ if test $enableval = "yes" ; then
AC_DEFINE(ENABLE_IPV6)
if test $have_ipv4 != "yes" ; then
ipv4_default=0
fi
fi])
AC_ARG_ENABLE(ipv4-startup,
[ --disable-ipv4-startup Disable IPv4 on pdnsd startup by default
(default=enabled)],
[ if test $enableval = "yes" ; then
ipv4_default=1
else
ipv4_default=0
fi])
AC_ARG_ENABLE(ipv6-startup,
[ --enable-ipv6-startup Enable IPV6 on pdnsd startup by default
(default=IPv4)],
[ if test $enableval = "yes" ; then
ipv4_default=0
else
ipv4_default=1
fi])
AC_DEFINE_UNQUOTED(DEFAULT_IPV4, $ipv4_default)
AC_ARG_ENABLE(udp-queries,
[ --disable-udp-queries Disable udp as query method.],
udp_queries=$enableval)
AC_ARG_ENABLE(tcp-queries,
[ --disable-tcp-queries Disable tcp as query method.],
tcp_queries=$enableval)
AC_ARG_WITH(query-method,
[ --with-query-method=qm Specify the query method (default=udponly;
others: tcponly, tcpudp, udptcp)],
query_m=$withval)
case $query_m in
udponly|UDPonly)
AC_DEFINE(M_PRESET, UDP_ONLY)
udp_queries=yes;
;;
tcponly|TCPonly)
AC_DEFINE(M_PRESET, TCP_ONLY)
tcp_queries=yes;
;;
tcpudp|TCPUDP)
AC_DEFINE(M_PRESET, TCP_UDP)
udp_queries=yes;
tcp_queries=yes;
;;
udptcp|UDPTCP)
AC_DEFINE(M_PRESET, UDP_TCP)
udp_queries=yes;
tcp_queries=yes;
;;
*)
AC_MSG_ERROR([--with-query-method must have udponly, tcponly, tcpudp or udptcp as parameter.])
;;
esac
test $udp_queries != "yes" && AC_DEFINE(NO_UDP_QUERIES)
test $tcp_queries != "yes" && AC_DEFINE(NO_TCP_QUERIES)
AC_ARG_ENABLE(tcp-server,
[ --disable-tcp-server Disable the TCP serving ability of pdnsd],
have_tcp_server=$enableval)
test $have_tcp_server != "yes" && AC_DEFINE(NO_TCP_SERVER)
AC_ARG_ENABLE(src-addr-disc,
[ --disable-src-addr-disc Disable the UDP source address discovery],
adisc=$enableval)
AC_ARG_ENABLE(socket-locking,
[ --enable-socket-locking Enable the UDP socket locking],
slock=$enableval)
test $slock = "yes" && AC_DEFINE(SOCKET_LOCKING)
AC_ARG_ENABLE(poll,
[ --disable-poll Disable poll(2) and use select(2)
(default=enabled)],
test $enableval != "yes" && AC_DEFINE(NO_POLL))
AC_ARG_ENABLE(new-rrs,
[ --disable-new-rrs Disable new DNS RR types (obsolete, currently ignored)],
newrrs=$enableval)
AC_ARG_ENABLE(strict-rfc2181,
[ --enable-strict-rfc2181 Enforce strict RFC 2181 compliance],
test $enableval = "yes" && AC_DEFINE(RFC2181_ME_HARDER))
AC_ARG_WITH(random-device,
[ --with-random-device=device Specify random device other than
/dev/random; default: C Library random() PRNG;
special value arc4random for BSD C Library
arc4random function (default on FreeBSD)],
randomdev=$withval)
if test "$randomdev" = arc4random ; then
AC_DEFINE(R_ARC4RANDOM)
elif test "$randomdev" = random ; then
AC_DEFINE(R_RANDOM)
elif test "$randomdev" = default ; then
AC_DEFINE(R_DEFAULT)
else
AC_DEFINE_UNQUOTED(RANDOM_DEVICE, "$randomdev")
fi
AC_ARG_ENABLE(underscores,
[ --enable-underscores Allow _ in domain names (obsolete, currently ignored)],
underscores=$enableval)
AC_ARG_WITH(default-id,
[ --with-default-id=id Specify default uid/gid for pdnsd
(default=nobody)],
def_id=$withval)
AC_SUBST(def_id)
AC_ARG_WITH(debug,
[ --with-debug=level Specify debugging level (0 means no debug support)],
AC_DEFINE_UNQUOTED(DEBUG, $withval))
AC_ARG_WITH(verbosity,
[ --with-verbosity=level Specify default message verbosity],
AC_DEFINE_UNQUOTED(VERBOSITY, $withval))
AC_ARG_WITH(hash-buckets,
[ --with-hash-buckets=num Number of hash buckets to use (default=1024).
The number actually used is the smallest power of two
greater or equal to the number specified here.],
powof2=1
hashsz=0
while test $powof2 -lt "$withval"
do
powof2=`expr 2 '*' $powof2`
hashsz=`expr $hashsz '+' 1`
done
AC_DEFINE_UNQUOTED(HASH_SZ, $hashsz)
)
AC_ARG_ENABLE(hash-debug,
[ --enable-hash-debug Debug hash tables (warning: massive output)],
test $enableval = "yes" && AC_DEFINE(DEBUG_HASH))
AC_ARG_ENABLE(rcsids,
[ --enable-rcsids Enable RCS IDs in executables (obsolete, currently ignored)],
have_rcsids=$enableval)
AC_ARG_WITH(tcp-qtimeout,
[ --with-tcp-qtimeout=secs Specify default tcp query timeout (default=30)],
AC_DEFINE_UNQUOTED(TCP_TIMEOUT, $withval))
AC_ARG_ENABLE(tcp-subseq,
[ --enable-tcp-subseq Enable multiple dns querys using one
tcp connection],
test $enableval = "yes" && AC_DEFINE(TCP_SUBSEQ))
AC_ARG_WITH(par-queries,
[ --with-par-queries=num Specify default parallel query number (default=2)],
AC_DEFINE_UNQUOTED(PAR_QUERIES, $withval))
AC_ARG_WITH(max-nameserver-ips,
[ --with-max-nameserver-ips=num Specify maximum number of IP addresses used per nameserver obtained from NS records (default=3)],
AC_DEFINE_UNQUOTED(MAXNAMESERVIPS, $withval))
AC_ARG_ENABLE(specbuild,
[ --enable-specbuild Only used when building pdnsd from spec files],
specbuild=$enableval)
AC_SUBST(specbuild)
AC_ARG_WITH(thread-lib,
[ --with-thread-lib=lib Specify thread library, overriding automatic detection (for Linux only).
Possible values: LinuxThreads,
LinuxThreads2 (implements a fix for newer glibcs)
or NPTL (Native POSIX Thread Library)],
threadlib=$withval)
AC_SUBST(threadlib)
dnl Checks for programs.
AC_PROG_CC
AM_PROG_CC_STDC
AM_PROG_CC_C_O
AC_PROG_INSTALL
dnl For dbm subsystem libraries
AC_PROG_RANLIB
if test "$target" = "autodetect" ; then
AC_MSG_CHECKING([for autodetect build target])
uname_sys=`uname`
if test $? -ne 0 ; then
AC_MSG_RESULT([failed])
AC_MSG_ERROR([uname failed or was not found in path])
else
case "${uname_sys}" in
Linux)
AC_MSG_RESULT(Linux)
AC_DEFINE(TARGET, TARGET_LINUX)
target="Linux"
;;
FreeBSD|NetBSD|OpenBSD|Darwin)
AC_MSG_RESULT("${uname_sys}")
AC_DEFINE(TARGET, TARGET_BSD)
target="BSD"
;;
CYGWIN*)
AC_MSG_RESULT("${uname_sys}")
AC_DEFINE(TARGET, TARGET_CYGWIN)
target="cygwin"
;;
*)
AC_MSG_RESULT([failed])
AC_MSG_ERROR(
[Your system type could not be identified. Try setting it manually using
--with-target])
;;
esac
fi
fi
#if test "$target" = BSD ; then
# uname_sys=`uname`
# if test "$uname_sys" = FreeBSD ; then
# AC_MSG_CHECKING([for FreeBSD version])
# osrel=`sysctl -n kern.osreldate`
# if test $osrel -ge 500016 ; then
# AC_MSG_RESULT([5.0 (>= 500016)])
# freebsd_pthread="5"
# else
# AC_MSG_RESULT([<=5.0 (< 500016)])
# freebsd_pthread="4"
# fi
# fi
#fi
if test "$adisc" = "default"; then
if test "$target" = "cygwin" ; then
# Don't do UDP source address discovery on Cygwin platform by default.
adisc="no"
else
adisc="yes"
fi
fi
test "$adisc" = "yes" && AC_DEFINE(SRC_ADDR_DISC)
dnl Checks for libraries.
if test "$target" = "Linux"; then
AC_MSG_CHECKING([if we can compile and link with -pthread])
old_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -pthread"
AC_LINK_IFELSE([
#include <pthread.h>
void *thread_func(void *data)
{
*((int *)data)=1;
return data;
}
int main()
{
pthread_t thread;
void *retval;
int val;
if(pthread_create(&thread, NULL, thread_func, &val))
return 1;
if(pthread_join(thread,&retval))
return 1;
return (*((int *)retval)!=1);
}
],
gcc_pthread_flag="yes", gcc_pthread_flag="no")
CFLAGS="$old_CFLAGS"
AC_MSG_RESULT([$gcc_pthread_flag])
if test "$gcc_pthread_flag" = yes ; then
thread_CFLAGS="-pthread"
AC_SUBST(thread_CFLAGS)
else
AC_CHECK_LIB(pthread, pthread_create)
fi
fi
if test "$target" = "BSD" -a `uname` != Darwin ; then
# if test $freebsd_pthread = 4 ; then
thread_CFLAGS="-pthread"
AC_SUBST(thread_CFLAGS)
# else
# AC_CHECK_LIB(c_r, pthread_create, ,
# AC_MSG_ERROR([You must have libc_r installed to build/run pdnsd!]))
# fi;
fi
if test "$target" = "Linux" -a "$threadlib" = default; then
AC_MSG_CHECKING([if this is an NPTL-based system])
old_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $thread_CFLAGS"
AC_RUN_IFELSE([
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <pthread.h>
/* All this function does is return its PID (in a roundabout way). */
void *thread_func(void *data)
{
*((int *)data)=getpid();
return data;
}
int main()
{
pthread_t thread;
void *retval;
int err,mainpid,thrdpid;
err=pthread_create(&thread, NULL, thread_func, &thrdpid);
if(err) {
fprintf(stderr,"pthread_create failed: %s\n",strerror(err));
return 1;
}
err=pthread_join(thread,&retval);
if(err) {
fprintf(stderr,"pthread_join failed: %s\n",strerror(err));
return 1;
}
mainpid=getpid();
/* In LinuxThreads implementations, the pids of the threads will usually differ
in a non Posix-compliant way. */
fprintf(stderr,"main pid=%d, thread pid=%d\n",mainpid,*((int *)retval));
return (*((int *)retval)!=mainpid);
}
],
[
AC_MSG_RESULT([yes])
threadlib=nptl
],
[
AC_MSG_RESULT([no])
threadlib=linuxthreads
],
[
AC_MSG_RESULT([couldn't run test program])
threadlib=linuxthreads
])
CFLAGS="$old_CFLAGS"
fi
if test "$threadlib" = nptl -o "$threadlib" = NPTL; then
AC_DEFINE(THREADLIB_NPTL)
elif test "$threadlib" = linuxthreads2 -o "$threadlib" = LinuxThreads2 -o "$threadlib" = lt2; then
AC_DEFINE(THREADLIB_LINUXTHREADS2)
fi
dnl Checks for header files.
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(fcntl.h malloc.h sys/ioctl.h sys/time.h syslog.h unistd.h)
AC_CHECK_HEADERS(sys/types.h sys/socket.h net/if.h netinet/in.h sys/poll.h,,,
[#include <stdio.h>
#if STDC_HEADERS
# include <stdlib.h>
# include <stddef.h>
#else
# if HAVE_STDLIB_H
# include <stdlib.h>
# endif
#endif
#if HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
])
dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_HEADER_TIME
AC_STRUCT_TM
AC_CHECK_TYPES(socklen_t,, AC_DEFINE(socklen_t,int),[#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>])
AC_CHECK_TYPES([struct in6_addr, struct in_pktinfo, struct ifreq],,,[#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>])
AC_MSG_CHECKING([for CPP C99 Variadic macro support])
AC_COMPILE_IFELSE([
#define a(...) junk(0,__VA_ARGS__)
extern void junk(int i,...);
int main()
{
a(0);
a("a");
a(0, "a", 1);
return 0;
}
],
cpp_c99_variadic="yes", cpp_c99_variadic="no")
AC_MSG_RESULT([$cpp_c99_variadic])
if test $cpp_c99_variadic = yes; then
AC_DEFINE(CPP_C99_VARIADIC_MACROS)
else
if test "$GCC" != yes; then
AC_MSG_ERROR([Compiler must support C99 or gcc variadic macros])
fi;
fi
dnl Checks for library functions.
AC_FUNC_ALLOCA
AC_PROG_GCC_TRADITIONAL
AC_FUNC_MEMCMP
AC_TYPE_SIGNAL
AC_FUNC_VPRINTF
AC_SEARCH_LIBS(nanosleep, rt)
AC_SEARCH_LIBS(socket, socket,,,-lnsl)
AC_SEARCH_LIBS(inet_aton, resolv)
AC_CHECK_FUNCS(nanosleep gettimeofday mkfifo select socket strerror uname snprintf vsnprintf, true,
AC_MSG_ERROR([One of the functions required for pdnsd were not found.]))
AC_CHECK_FUNCS(poll, true, AC_DEFINE(NO_POLL))
AC_CHECK_FUNCS(strdup strndup stpcpy stpncpy strlcpy mempcpy getline asprintf vasprintf getpwnam_r inet_ntop inet_pton)
AC_OUTPUT([
pdnsd.spec
Makefile
file-list.base
contrib/Makefile
doc/Makefile
doc/pdnsd.8
doc/pdnsd.conf.5
doc/pdnsd.conf
src/Makefile
src/pdnsd-ctl/Makefile
src/rc/Makefile
src/rc/RedHat/Makefile
src/rc/RedHat/pdnsd
src/rc/SuSE/Makefile
src/rc/SuSE/pdnsd
src/rc/Debian/Makefile
src/rc/Debian/pdnsd
src/rc/Slackware/Makefile
src/rc/Slackware/rc.pdnsd
src/rc/ArchLinux/Makefile
src/rc/ArchLinux/pdnsd
src/test/Makefile
PKGBUILD
])

2
app/src/main/jni/pdnsd/contrib/Makefile.am Normal file
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@ -0,0 +1,2 @@
EXTRA_DIST = pdnsd_dhcp.pl dhcp2pdnsd change_pdnsd_server_ip.pl README

323
app/src/main/jni/pdnsd/contrib/Makefile.in Normal file
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@ -0,0 +1,323 @@
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# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
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srcdir = @srcdir@
sysconfdir = @sysconfdir@
target_alias = @target_alias@
thread_CFLAGS = @thread_CFLAGS@
threadlib = @threadlib@
top_build_prefix = @top_build_prefix@
top_builddir = @top_builddir@
top_srcdir = @top_srcdir@
EXTRA_DIST = pdnsd_dhcp.pl dhcp2pdnsd change_pdnsd_server_ip.pl README
all: all-am
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$(srcdir)/Makefile.in: $(srcdir)/Makefile.am $(am__configure_deps)
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*$$dep*) \
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echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu contrib/Makefile'; \
$(am__cd) $(top_srcdir) && \
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$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
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$(top_srcdir)/configure: $(am__configure_deps)
cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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tags: TAGS
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ctags: CTAGS
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list='$(DISTFILES)'; \
dist_files=`for file in $$list; do echo $$file; done | \
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for file in $$dist_files; do \
if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
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if test -d "$(distdir)/$$file"; then \
find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
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cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
fi; \
cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
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test -f "$(distdir)/$$file" \
|| cp -p $$d/$$file "$(distdir)/$$file" \
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check-am: all-am
check: check-am
all-am: Makefile
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install-data: install-data-am
uninstall: uninstall-am
install-am: all-am
@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
installcheck: installcheck-am
install-strip:
$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
`test -z '$(STRIP)' || \
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-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
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@echo "This command is intended for maintainers to use"
@echo "it deletes files that may require special tools to rebuild."
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install-data-am:
install-dvi: install-dvi-am
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install-info: install-info-am
install-info-am:
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distclean-generic distdir dvi dvi-am html html-am info info-am \
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install-dvi-am install-exec install-exec-am install-html \
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# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

30
app/src/main/jni/pdnsd/contrib/README Normal file
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@ -0,0 +1,30 @@
Last revised: 27 July 2003 by Paul Rombouts
This directory contains user-contributed scripts for use with pdnsd.
So far there are:
pdnsd_dhcp.pl, save_ram.pl
A perl script contributed by Marko Stolle (derived from a script by
Mike Stella) to watch a ISC DHCPD leases file and add local records for
the hosts listed there. This makes pdnsd useable in a DHCP setup.
Please look into the script for usage instructions (you will probably
also need to customize some settings there).
For details about save_ram.pl, please look into pdnsd_dhcp.pl
dhcp2pdnsd
A rc script for pdnsd, also by Marko Stolle. You might need to change
it slightly to make it run with your distro.
change_pdnsd_server_ip.pl
A perl script contributed by Paul Rombouts for automatically updating
the configuration file if the DNS server configuration has changed.
For instance, you could place the following line in the script
/sbin/ifup-local
/usr/local/sbin/change_pdnsd_server_ip.pl isplabel "$DNS" /etc/pdnsd.conf
where $DNS contains the IP addresses (in comma separated format) of the
DNS servers obtained by DHCP negotiation. The perl script only
overwrites /etc/pdnsd.conf if the DNS configuration has actually
changed, in which case the previous configuration file is saved as
/etc/pdnsd.conf.save

124
app/src/main/jni/pdnsd/contrib/change_pdnsd_server_ip.pl Normal file
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#!/usr/bin/perl -w
#
# A Perl script to change the ip addresses of dns servers
# in the pdnsd configuration file.
#
# Written by Paul A. Rombouts
#
# This file Copyright 2002, 2004 Paul A. Rombouts
# It may be distributed under the GNU Public License, version 2, or
# any higher version. See section COPYING of the GNU Public license
# for conditions under which this file may be redistributed.
#
use strict;
unless(@ARGV) {die "Error: no label specified.\n"}
my $label=shift;
unless(@ARGV) {die "Error: no DNS addresses specified.\n"}
my $dns_str=shift;
my $pdnsd_conf='/etc/pdnsd.conf';
if(@ARGV) {
$pdnsd_conf=shift;
if(@ARGV) {warn "Warning: spurious arguments ignored: @ARGV\n"}
}
#unless($label =~ /^\".*\"$/) {$label="\"$label\""}
#unless($dns_str =~ /^\".*\"$/) {$dns_str =~ s/^[\s,]*/\"/; $dns_str =~ s/[\s,]*$/\"/}
#unless($dns_str =~ /\"\s*\,\s*\"/) {$dns_str =~ s/[\s,]+/","/g}
my @lines=();
my $found_section=0;
my $changed=0;
my $ip_patt = qr/^((?:[^#]*?(?:\{|;))*?)(\s*ip\s*=\s*)("?[\w.:]+"?(?:\s*,\s*"?[\w.:]+"?)*)\s*;/;
open(CONFFILE,$pdnsd_conf) or die "Can't open $pdnsd_conf: $!\n";
while(<CONFFILE>) {
if(/^\s*server\s*\{/) {
my $sect_beg=$#lines+1;
my $sect_end;
my $found_label=0;
LOOP: {
do {
push @lines,$_;
if(/^(?:.*(?:\{|;))?\s*label\s*=\s*"?\Q$label\E"?\s*;/) {
if($found_label++) {
warn "Server section with multiple labels found.\n";
close(CONFFILE);
exit 2;
}
}
if(/\}\s*$/) {
$sect_end=$#lines;
last LOOP;
}
} while(<CONFFILE>);
}
unless(defined($sect_end)) {
warn "Server section without proper ending found.\n";
close(CONFFILE);
exit 2;
}
if(!$found_label) {next}
if(!($found_section++)) {
my $found_ip=0;
for(my $i=$sect_beg; $i<=$sect_end;++$i) {
if($lines[$i] =~ $ip_patt) {
my $matched=''; my $rest;
do {
$rest=$';
if(!($found_ip++)) {
if($3 eq $dns_str) {
$matched.=$&;
}
else {
$matched.="$1$2$dns_str;";
$changed=1;
}
}
else {
$matched.=$1;
$changed=1;
}
} while($rest =~ $ip_patt);
$lines[$i] = $matched.$rest;
}
}
if(!$found_ip) {
unless($lines[$sect_end] =~ s/\}\s*$/ ip=$dns_str;\n$&/) {
warn "Can't add ip specification to server section labeled $label.\n";
close(CONFFILE);
exit 2;
}
$changed=1;
}
}
else {
splice @lines,$sect_beg;
$changed=1;
}
}
else {push @lines,$_}
}
close(CONFFILE) or die "Can't close $pdnsd_conf: $!\n";
if(!$found_section) {
warn "No server sections labeled $label found.\n";
exit 2;
}
elsif(!$changed) {
exit 0;
}
rename($pdnsd_conf,"$pdnsd_conf.save") or die "Can't rename $pdnsd_conf: $!\n";
unless((open(CONFFILE,">$pdnsd_conf") or (warn("Can't open $pdnsd_conf for writing: $!\n"),0)) and
(print CONFFILE (@lines) or (warn("Can't write to $pdnsd_conf: $!\n"),0)) and
(close(CONFFILE) or (warn("Can't close $pdnsd_conf after writing: $!\n"),0))) {
rename("$pdnsd_conf.save",$pdnsd_conf) or die "Can't rename $pdnsd_conf.save: $!\n";
exit 3;
}
exit 1;

45
app/src/main/jni/pdnsd/contrib/dhcp2pdnsd Normal file
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#! /bin/sh
#
# dhcp2pdnsd Start/Stop DHCP to DNS update script
#
# chkconfig: 345 96 99
# description: DHCP to DNS update script
# processname: dhcp2pdnsd.pl
#
# $Id: dhcp2pdnsd,v 1.1 2001/03/25 20:01:34 tmm Exp $
where="/usr/local/bin/"
name="pdnsd_dhcp.pl"
# Source function library.
. /etc/rc.d/init.d/functions
# Get config.
. /etc/sysconfig/network
# See how we were called.
case "$1" in
start)
$where$name > /dev/null 2> /dev/null &
action "Starting DHCP to DNS update script: " /bin/true
;;
stop)
p=`ps h -C $name | awk '{print $1}'`
[ $p -gt 0 ] 2> /dev/null && kill $p && action "Stopping DHCP to DNS update script: " /bin/true
[ $p -gt 0 ] 2> /dev/null || action "Stopping DHCP to DNS update script: " /bin/false
;;
status)
p=`ps h -C $name | awk '{print $1}'`
[ $p -gt 0 ] 2> /dev/null && echo 'running as '$p
[ $p -gt 0 ] 2> /dev/null || echo 'not running'
;;
restart|reload)
$0 stop
$0 start
;;
*)
echo "Usage: dhcp2pdnsd {start|stop|status|restart|reload}"
exit 1
esac
exit 0

246
app/src/main/jni/pdnsd/contrib/pdnsd_dhcp.pl Normal file
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#!/usr/bin/perl
# $Id: pdnsd_dhcp.pl,v 1.2 2001/03/25 20:01:34 tmm Exp $
##########################################################################
#
# Filename: pdnsd_dhcp.pl
# Description: Dynamic DNS-DHCP update script for pdnsd
# Author: Mike Stella
# Modified by: Marko Stolle
# Created: November 19, 2001
# Last Updated: February 28, 2001
# Email: fwd2m@gmx.de
#
###########################################################################
#
# This code is Copyright (c) 1998-2001 by Mike Stella and Marko Stolle
#
# NO WARRANTY is given for this program. If it doesn't
# work on your system, sorry. If it eats your hard drive,
# again, sorry. It works fine on mine. Good luck!
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
###########################################################################
#
# This script reads a dhcpd.leases file and dynamically updates pdnsd with
# hostname and ip information.
#
# It assumes that your DHCP server recieves hostnames from the
# clients, and that your clients offer their hostnames to the server.
# Some versions of Linux DHCP clients don't do that. I use ISC's
# DHCPD, found at http://www.isc.org - though others may work just
# fine.
#
# This version of the script updates the pdnsd database. The status
# control socket of pdnsd has to be enabled (psnsd -d -s).
#
###########################################################################
#
# 02/20/2001 - first working version
# 02/21/2001 - security patches by Thomas Moestl
# 02/22/2001 - re-read dhcpd.leases if ttl has expireds since last update
# 02/24/2001 - try to get domainname if not specified
# 02/28/2001 - randomized temporary filename
# added possibility to save some RAM (read below)
#
###########################################################################
# You may save some memory if you use absolute values with sysopen
# in sub update_dns and don't use tmpnam()..
# Just switch the '#' in front of the 'until sysopen' in the sub
# update_dns, check the necessary modes on your system using save_ram.pl
# and add a '#' in front of the following three lines.
# Not using the tmpnam() function may open a security breach on systems
# with not absolute trustworthy local users (Risk: a user may write a
# script which creates files with the same names as this script and block
# it that way. Unlikely because the filenames are now even without tmpnam()
# randomized and an attacker has to create a very large number of files.)
use Fcntl;
use strict;
use POSIX qw(tmpnam);
$|=1;
###########################################################################
### Globals - you can change these as needed
# Domain name
# if not changed script will try to get it from the system
my $domain_name = "domain";
# DHCPD lease file
my $lease_file = "/var/lib/dhcp/dhcpd.leases";
# path to pdnsd-ctl
my $pdnsd_ctl = "/usr/local/sbin/pdnsd-ctl";
# owning name server for the newly added records
my $nameserver = "localhost.";
# TTL (Time To Live) for the new records
my $ttl = "86400";
# number of seconds to check the lease file for updates
my $update_freq = 30;
my $debug = 0;
###########################################################################
### Don't mess with anything below unless you REALLY need to modify the
### code. And if you do, please let me know, I'm always interested in
### in improving this program.
# Make a pid file
`echo $$ > /var/run/pdnsd_update.pid`;
my $logstr;
my $modtime = 0;
my $temp_dir = -d '/tmp' ? '/tmp' : $ENV{TMP} || $ENV{TEMP};
use vars qw (%db);
my $version = "1.03";
###########################################################################
# Main Loop
# try to find domainname if necessary
if ($domain_name eq "domain") {
$domain_name = `dnsdomainname`;
}
else {
$domain_name = "$domain_name\n";
}
while (1) {
# check the file's last updated time, if it's been changed, update
# the DNS and save the time. Update DNS even if there a no changes on
# the leases file if ttl since last DNS update has expired.
# This will ALWAYS run once - on startup, since $modtime starts at zero.
my @stats = stat ($lease_file);
if (($stats[9] > $modtime) or (time >= $modtime+$ttl)){
# clear the old hash
undef %db;
printf STDERR "updating DNS with dhcpd.leases\n";
$modtime = time;
&read_lease_file;
&update_dns;
}
# wait till next check time
sleep $update_freq;
} # end main
###########################################################################
### write out the import file
sub update_dns {
my ($ip, $hostname, $fname);
do { $fname = tmpnam() }
until sysopen(DNSFILE, $fname, O_WRONLY|O_CREAT|O_EXCL, 0600);
# do { $fname = "$temp_dir/d2d".int(rand(time())) }
# until sysopen(DNSFILE, $fname, 1|64|128, 0600);
while (($hostname,$ip) = each (%db)) {
print DNSFILE "$ip $hostname.$domain_name";
}
close DNSFILE;
system ("$pdnsd_ctl source $fname $nameserver $ttl");
unlink($fname);
}
### reads the lease file & makes a hash of what's in there.
sub read_lease_file {
unless (open(LEASEFILE,$lease_file)) {
#`logger -t dns_update.pl error opening dhcpd lease file`;
print STDERR "Can't open lease file\n";
return;
}
my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
my $curdate = sprintf "%02d%02d%02d%02d%02d%20d%20d",
($year+1900),($mon+1),$mday,$hour,$min,$sec;
## Loop here, reading from LEASEFILE
while (<LEASEFILE>) {
my ($ip, $hostname, $mac, $enddate,$endtime);
if (/^\s*lease/i) {
# find ip address
$_ =~ /^\s*lease\s+(\S+)/;
$ip = $1;
# do the rest of the block - we're interested in hostname,
# mac address, and the lease time
while ($_ !~ /^}/) {
$_ = <LEASEFILE>;
# find hostname
if ($_ =~ /^\s*client/i) {
#chomp $_;
#chop $_;
$_ =~ /\"(.*)\"/;
$hostname = $1;
# change spaces to dash, remove dots - microsoft
# really needs to not do this crap
$hostname =~ s/\s+/-/g;
$hostname =~ s/\.//g;
}
# get the lease end date
elsif ($_ =~ /^\s*ends/i) {
$_ =~ m/^\s*ends\s+\d\s+([^;]+);/;
$enddate = $1;
$enddate =~ s|[/: ]||g;
}
}
# lowercase it - stupid dhcp clients
$hostname =~ tr/[A-Z]/[a-z]/;
($debug < 1 ) || print STDERR "$hostname $ip $enddate $curdate\n";
# Store hostname/ip in hash - this way we can do easy dupe checking
if (($hostname ne "") and ($enddate > $curdate)) {
$db{$hostname} = $ip;
}
}
}
close LEASEFILE;
}
### left around for testing
sub print_db {
my ($key,$value);
while (($key,$value) = each (%db)) {
print "$key - $value\n";
}
}

530
app/src/main/jni/pdnsd/depcomp Normal file
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#! /bin/sh
# depcomp - compile a program generating dependencies as side-effects
scriptversion=2005-07-09.11
# Copyright (C) 1999, 2000, 2003, 2004, 2005 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.
# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
case $1 in
'')
echo "$0: No command. Try \`$0 --help' for more information." 1>&2
exit 1;
;;
-h | --h*)
cat <<\EOF
Usage: depcomp [--help] [--version] PROGRAM [ARGS]
Run PROGRAMS ARGS to compile a file, generating dependencies
as side-effects.
Environment variables:
depmode Dependency tracking mode.
source Source file read by `PROGRAMS ARGS'.
object Object file output by `PROGRAMS ARGS'.
DEPDIR directory where to store dependencies.
depfile Dependency file to output.
tmpdepfile Temporary file to use when outputing dependencies.
libtool Whether libtool is used (yes/no).
Report bugs to <bug-automake@gnu.org>.
EOF
exit $?
;;
-v | --v*)
echo "depcomp $scriptversion"
exit $?
;;
esac
if test -z "$depmode" || test -z "$source" || test -z "$object"; then
echo "depcomp: Variables source, object and depmode must be set" 1>&2
exit 1
fi
# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
depfile=${depfile-`echo "$object" |
sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
rm -f "$tmpdepfile"
# Some modes work just like other modes, but use different flags. We
# parameterize here, but still list the modes in the big case below,
# to make depend.m4 easier to write. Note that we *cannot* use a case
# here, because this file can only contain one case statement.
if test "$depmode" = hp; then
# HP compiler uses -M and no extra arg.
gccflag=-M
depmode=gcc
fi
if test "$depmode" = dashXmstdout; then
# This is just like dashmstdout with a different argument.
dashmflag=-xM
depmode=dashmstdout
fi
case "$depmode" in
gcc3)
## gcc 3 implements dependency tracking that does exactly what
## we want. Yay! Note: for some reason libtool 1.4 doesn't like
## it if -MD -MP comes after the -MF stuff. Hmm.
"$@" -MT "$object" -MD -MP -MF "$tmpdepfile"
stat=$?
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile"
exit $stat
fi
mv "$tmpdepfile" "$depfile"
;;
gcc)
## There are various ways to get dependency output from gcc. Here's
## why we pick this rather obscure method:
## - Don't want to use -MD because we'd like the dependencies to end
## up in a subdir. Having to rename by hand is ugly.
## (We might end up doing this anyway to support other compilers.)
## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
## -MM, not -M (despite what the docs say).
## - Using -M directly means running the compiler twice (even worse
## than renaming).
if test -z "$gccflag"; then
gccflag=-MD,
fi
"$@" -Wp,"$gccflag$tmpdepfile"
stat=$?
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
echo "$object : \\" > "$depfile"
alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
## The second -e expression handles DOS-style file names with drive letters.
sed -e 's/^[^:]*: / /' \
-e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
## This next piece of magic avoids the `deleted header file' problem.
## The problem is that when a header file which appears in a .P file
## is deleted, the dependency causes make to die (because there is
## typically no way to rebuild the header). We avoid this by adding
## dummy dependencies for each header file. Too bad gcc doesn't do
## this for us directly.
tr ' ' '
' < "$tmpdepfile" |
## Some versions of gcc put a space before the `:'. On the theory
## that the space means something, we add a space to the output as
## well.
## Some versions of the HPUX 10.20 sed can't process this invocation
## correctly. Breaking it into two sed invocations is a workaround.
sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
hp)
# This case exists only to let depend.m4 do its work. It works by
# looking at the text of this script. This case will never be run,
# since it is checked for above.
exit 1
;;
sgi)
if test "$libtool" = yes; then
"$@" "-Wp,-MDupdate,$tmpdepfile"
else
"$@" -MDupdate "$tmpdepfile"
fi
stat=$?
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
echo "$object : \\" > "$depfile"
# Clip off the initial element (the dependent). Don't try to be
# clever and replace this with sed code, as IRIX sed won't handle
# lines with more than a fixed number of characters (4096 in
# IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
# the IRIX cc adds comments like `#:fec' to the end of the
# dependency line.
tr ' ' '
' < "$tmpdepfile" \
| sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
tr '
' ' ' >> $depfile
echo >> $depfile
# The second pass generates a dummy entry for each header file.
tr ' ' '
' < "$tmpdepfile" \
| sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
>> $depfile
else
# The sourcefile does not contain any dependencies, so just
# store a dummy comment line, to avoid errors with the Makefile
# "include basename.Plo" scheme.
echo "#dummy" > "$depfile"
fi
rm -f "$tmpdepfile"
;;
aix)
# The C for AIX Compiler uses -M and outputs the dependencies
# in a .u file. In older versions, this file always lives in the
# current directory. Also, the AIX compiler puts `$object:' at the
# start of each line; $object doesn't have directory information.
# Version 6 uses the directory in both cases.
stripped=`echo "$object" | sed 's/\(.*\)\..*$/\1/'`
tmpdepfile="$stripped.u"
if test "$libtool" = yes; then
"$@" -Wc,-M
else
"$@" -M
fi
stat=$?
if test -f "$tmpdepfile"; then :
else
stripped=`echo "$stripped" | sed 's,^.*/,,'`
tmpdepfile="$stripped.u"
fi
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile"
exit $stat
fi
if test -f "$tmpdepfile"; then
outname="$stripped.o"
# Each line is of the form `foo.o: dependent.h'.
# Do two passes, one to just change these to
# `$object: dependent.h' and one to simply `dependent.h:'.
sed -e "s,^$outname:,$object :," < "$tmpdepfile" > "$depfile"
sed -e "s,^$outname: \(.*\)$,\1:," < "$tmpdepfile" >> "$depfile"
else
# The sourcefile does not contain any dependencies, so just
# store a dummy comment line, to avoid errors with the Makefile
# "include basename.Plo" scheme.
echo "#dummy" > "$depfile"
fi
rm -f "$tmpdepfile"
;;
icc)
# Intel's C compiler understands `-MD -MF file'. However on
# icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
# ICC 7.0 will fill foo.d with something like
# foo.o: sub/foo.c
# foo.o: sub/foo.h
# which is wrong. We want:
# sub/foo.o: sub/foo.c
# sub/foo.o: sub/foo.h
# sub/foo.c:
# sub/foo.h:
# ICC 7.1 will output
# foo.o: sub/foo.c sub/foo.h
# and will wrap long lines using \ :
# foo.o: sub/foo.c ... \
# sub/foo.h ... \
# ...
"$@" -MD -MF "$tmpdepfile"
stat=$?
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
# Each line is of the form `foo.o: dependent.h',
# or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
# Do two passes, one to just change these to
# `$object: dependent.h' and one to simply `dependent.h:'.
sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
# Some versions of the HPUX 10.20 sed can't process this invocation
# correctly. Breaking it into two sed invocations is a workaround.
sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
tru64)
# The Tru64 compiler uses -MD to generate dependencies as a side
# effect. `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
# At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
# dependencies in `foo.d' instead, so we check for that too.
# Subdirectories are respected.
dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
test "x$dir" = "x$object" && dir=
base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
if test "$libtool" = yes; then
# With Tru64 cc, shared objects can also be used to make a
# static library. This mecanism is used in libtool 1.4 series to
# handle both shared and static libraries in a single compilation.
# With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
#
# With libtool 1.5 this exception was removed, and libtool now
# generates 2 separate objects for the 2 libraries. These two
# compilations output dependencies in in $dir.libs/$base.o.d and
# in $dir$base.o.d. We have to check for both files, because
# one of the two compilations can be disabled. We should prefer
# $dir$base.o.d over $dir.libs/$base.o.d because the latter is
# automatically cleaned when .libs/ is deleted, while ignoring
# the former would cause a distcleancheck panic.
tmpdepfile1=$dir.libs/$base.lo.d # libtool 1.4
tmpdepfile2=$dir$base.o.d # libtool 1.5
tmpdepfile3=$dir.libs/$base.o.d # libtool 1.5
tmpdepfile4=$dir.libs/$base.d # Compaq CCC V6.2-504
"$@" -Wc,-MD
else
tmpdepfile1=$dir$base.o.d
tmpdepfile2=$dir$base.d
tmpdepfile3=$dir$base.d
tmpdepfile4=$dir$base.d
"$@" -MD
fi
stat=$?
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
exit $stat
fi
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
do
test -f "$tmpdepfile" && break
done
if test -f "$tmpdepfile"; then
sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
# That's a tab and a space in the [].
sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
else
echo "#dummy" > "$depfile"
fi
rm -f "$tmpdepfile"
;;
#nosideeffect)
# This comment above is used by automake to tell side-effect
# dependency tracking mechanisms from slower ones.
dashmstdout)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout, regardless of -o.
"$@" || exit $?
# Remove the call to Libtool.
if test "$libtool" = yes; then
while test $1 != '--mode=compile'; do
shift
done
shift
fi
# Remove `-o $object'.
IFS=" "
for arg
do
case $arg in
-o)
shift
;;
$object)
shift
;;
*)
set fnord "$@" "$arg"
shift # fnord
shift # $arg
;;
esac
done
test -z "$dashmflag" && dashmflag=-M
# Require at least two characters before searching for `:'
# in the target name. This is to cope with DOS-style filenames:
# a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
"$@" $dashmflag |
sed 's:^[ ]*[^: ][^:][^:]*\:[ ]*:'"$object"'\: :' > "$tmpdepfile"
rm -f "$depfile"
cat < "$tmpdepfile" > "$depfile"
tr ' ' '
' < "$tmpdepfile" | \
## Some versions of the HPUX 10.20 sed can't process this invocation
## correctly. Breaking it into two sed invocations is a workaround.
sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
dashXmstdout)
# This case only exists to satisfy depend.m4. It is never actually
# run, as this mode is specially recognized in the preamble.
exit 1
;;
makedepend)
"$@" || exit $?
# Remove any Libtool call
if test "$libtool" = yes; then
while test $1 != '--mode=compile'; do
shift
done
shift
fi
# X makedepend
shift
cleared=no
for arg in "$@"; do
case $cleared in
no)
set ""; shift
cleared=yes ;;
esac
case "$arg" in
-D*|-I*)
set fnord "$@" "$arg"; shift ;;
# Strip any option that makedepend may not understand. Remove
# the object too, otherwise makedepend will parse it as a source file.
-*|$object)
;;
*)
set fnord "$@" "$arg"; shift ;;
esac
done
obj_suffix="`echo $object | sed 's/^.*\././'`"
touch "$tmpdepfile"
${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
rm -f "$depfile"
cat < "$tmpdepfile" > "$depfile"
sed '1,2d' "$tmpdepfile" | tr ' ' '
' | \
## Some versions of the HPUX 10.20 sed can't process this invocation
## correctly. Breaking it into two sed invocations is a workaround.
sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile" "$tmpdepfile".bak
;;
cpp)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout.
"$@" || exit $?
# Remove the call to Libtool.
if test "$libtool" = yes; then
while test $1 != '--mode=compile'; do
shift
done
shift
fi
# Remove `-o $object'.
IFS=" "
for arg
do
case $arg in
-o)
shift
;;
$object)
shift
;;
*)
set fnord "$@" "$arg"
shift # fnord
shift # $arg
;;
esac
done
"$@" -E |
sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
-e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
sed '$ s: \\$::' > "$tmpdepfile"
rm -f "$depfile"
echo "$object : \\" > "$depfile"
cat < "$tmpdepfile" >> "$depfile"
sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
msvisualcpp)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout, regardless of -o,
# because we must use -o when running libtool.
"$@" || exit $?
IFS=" "
for arg
do
case "$arg" in
"-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
set fnord "$@"
shift
shift
;;
*)
set fnord "$@" "$arg"
shift
shift
;;
esac
done
"$@" -E |
sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
rm -f "$depfile"
echo "$object : \\" > "$depfile"
. "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s:: \1 \\:p' >> "$depfile"
echo " " >> "$depfile"
. "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
rm -f "$tmpdepfile"
;;
none)
exec "$@"
;;
*)
echo "Unknown depmode $depmode" 1>&2
exit 1
;;
esac
exit 0
# Local Variables:
# mode: shell-script
# sh-indentation: 2
# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-end: "$"
# End:

5
app/src/main/jni/pdnsd/file-list.base.in Normal file
View File

@ -0,0 +1,5 @@
%defattr(-,root,root)
%doc AUTHORS THANKS COPYING COPYING.BSD ChangeLog ChangeLog.old INSTALL NEWS README README.par README.par.old TODO
%config /etc/pdnsd.conf.sample
%attr(750, @def_id@, @def_id@) %dir @cachedir@
%attr(640, @def_id@, @def_id@) %config @cachedir@/pdnsd.cache

323
app/src/main/jni/pdnsd/install-sh Normal file
View File

@ -0,0 +1,323 @@
#!/bin/sh
# install - install a program, script, or datafile
scriptversion=2005-05-14.22
# This originates from X11R5 (mit/util/scripts/install.sh), which was
# later released in X11R6 (xc/config/util/install.sh) with the
# following copyright and license.
#
# Copyright (C) 1994 X Consortium
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# Except as contained in this notice, the name of the X Consortium shall not
# be used in advertising or otherwise to promote the sale, use or other deal-
# ings in this Software without prior written authorization from the X Consor-
# tium.
#
#
# FSF changes to this file are in the public domain.
#
# Calling this script install-sh is preferred over install.sh, to prevent
# `make' implicit rules from creating a file called install from it
# when there is no Makefile.
#
# This script is compatible with the BSD install script, but was written
# from scratch. It can only install one file at a time, a restriction
# shared with many OS's install programs.
# set DOITPROG to echo to test this script
# Don't use :- since 4.3BSD and earlier shells don't like it.
doit="${DOITPROG-}"
# put in absolute paths if you don't have them in your path; or use env. vars.
mvprog="${MVPROG-mv}"
cpprog="${CPPROG-cp}"
chmodprog="${CHMODPROG-chmod}"
chownprog="${CHOWNPROG-chown}"
chgrpprog="${CHGRPPROG-chgrp}"
stripprog="${STRIPPROG-strip}"
rmprog="${RMPROG-rm}"
mkdirprog="${MKDIRPROG-mkdir}"
chmodcmd="$chmodprog 0755"
chowncmd=
chgrpcmd=
stripcmd=
rmcmd="$rmprog -f"
mvcmd="$mvprog"
src=
dst=
dir_arg=
dstarg=
no_target_directory=
usage="Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
or: $0 [OPTION]... SRCFILES... DIRECTORY
or: $0 [OPTION]... -t DIRECTORY SRCFILES...
or: $0 [OPTION]... -d DIRECTORIES...
In the 1st form, copy SRCFILE to DSTFILE.
In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
In the 4th, create DIRECTORIES.
Options:
-c (ignored)
-d create directories instead of installing files.
-g GROUP $chgrpprog installed files to GROUP.
-m MODE $chmodprog installed files to MODE.
-o USER $chownprog installed files to USER.
-s $stripprog installed files.
-t DIRECTORY install into DIRECTORY.
-T report an error if DSTFILE is a directory.
--help display this help and exit.
--version display version info and exit.
Environment variables override the default commands:
CHGRPPROG CHMODPROG CHOWNPROG CPPROG MKDIRPROG MVPROG RMPROG STRIPPROG
"
while test -n "$1"; do
case $1 in
-c) shift
continue;;
-d) dir_arg=true
shift
continue;;
-g) chgrpcmd="$chgrpprog $2"
shift
shift
continue;;
--help) echo "$usage"; exit $?;;
-m) chmodcmd="$chmodprog $2"
shift
shift
continue;;
-o) chowncmd="$chownprog $2"
shift
shift
continue;;
-s) stripcmd=$stripprog
shift
continue;;
-t) dstarg=$2
shift
shift
continue;;
-T) no_target_directory=true
shift
continue;;
--version) echo "$0 $scriptversion"; exit $?;;
*) # When -d is used, all remaining arguments are directories to create.
# When -t is used, the destination is already specified.
test -n "$dir_arg$dstarg" && break
# Otherwise, the last argument is the destination. Remove it from $@.
for arg
do
if test -n "$dstarg"; then
# $@ is not empty: it contains at least $arg.
set fnord "$@" "$dstarg"
shift # fnord
fi
shift # arg
dstarg=$arg
done
break;;
esac
done
if test -z "$1"; then
if test -z "$dir_arg"; then
echo "$0: no input file specified." >&2
exit 1
fi
# It's OK to call `install-sh -d' without argument.
# This can happen when creating conditional directories.
exit 0
fi
for src
do
# Protect names starting with `-'.
case $src in
-*) src=./$src ;;
esac
if test -n "$dir_arg"; then
dst=$src
src=
if test -d "$dst"; then
mkdircmd=:
chmodcmd=
else
mkdircmd=$mkdirprog
fi
else
# Waiting for this to be detected by the "$cpprog $src $dsttmp" command
# might cause directories to be created, which would be especially bad
# if $src (and thus $dsttmp) contains '*'.
if test ! -f "$src" && test ! -d "$src"; then
echo "$0: $src does not exist." >&2
exit 1
fi
if test -z "$dstarg"; then
echo "$0: no destination specified." >&2
exit 1
fi
dst=$dstarg
# Protect names starting with `-'.
case $dst in
-*) dst=./$dst ;;
esac
# If destination is a directory, append the input filename; won't work
# if double slashes aren't ignored.
if test -d "$dst"; then
if test -n "$no_target_directory"; then
echo "$0: $dstarg: Is a directory" >&2
exit 1
fi
dst=$dst/`basename "$src"`
fi
fi
# This sed command emulates the dirname command.
dstdir=`echo "$dst" | sed -e 's,/*$,,;s,[^/]*$,,;s,/*$,,;s,^$,.,'`
# Make sure that the destination directory exists.
# Skip lots of stat calls in the usual case.
if test ! -d "$dstdir"; then
defaultIFS='
'
IFS="${IFS-$defaultIFS}"
oIFS=$IFS
# Some sh's can't handle IFS=/ for some reason.
IFS='%'
set x `echo "$dstdir" | sed -e 's@/@%@g' -e 's@^%@/@'`
shift
IFS=$oIFS
pathcomp=
while test $# -ne 0 ; do
pathcomp=$pathcomp$1
shift
if test ! -d "$pathcomp"; then
$mkdirprog "$pathcomp"
# mkdir can fail with a `File exist' error in case several
# install-sh are creating the directory concurrently. This
# is OK.
test -d "$pathcomp" || exit
fi
pathcomp=$pathcomp/
done
fi
if test -n "$dir_arg"; then
$doit $mkdircmd "$dst" \
&& { test -z "$chowncmd" || $doit $chowncmd "$dst"; } \
&& { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } \
&& { test -z "$stripcmd" || $doit $stripcmd "$dst"; } \
&& { test -z "$chmodcmd" || $doit $chmodcmd "$dst"; }
else
dstfile=`basename "$dst"`
# Make a couple of temp file names in the proper directory.
dsttmp=$dstdir/_inst.$$_
rmtmp=$dstdir/_rm.$$_
# Trap to clean up those temp files at exit.
trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
trap '(exit $?); exit' 1 2 13 15
# Copy the file name to the temp name.
$doit $cpprog "$src" "$dsttmp" &&
# and set any options; do chmod last to preserve setuid bits.
#
# If any of these fail, we abort the whole thing. If we want to
# ignore errors from any of these, just make sure not to ignore
# errors from the above "$doit $cpprog $src $dsttmp" command.
#
{ test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } \
&& { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } \
&& { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } \
&& { test -z "$chmodcmd" || $doit $chmodcmd "$dsttmp"; } &&
# Now rename the file to the real destination.
{ $doit $mvcmd -f "$dsttmp" "$dstdir/$dstfile" 2>/dev/null \
|| {
# The rename failed, perhaps because mv can't rename something else
# to itself, or perhaps because mv is so ancient that it does not
# support -f.
# Now remove or move aside any old file at destination location.
# We try this two ways since rm can't unlink itself on some
# systems and the destination file might be busy for other
# reasons. In this case, the final cleanup might fail but the new
# file should still install successfully.
{
if test -f "$dstdir/$dstfile"; then
$doit $rmcmd -f "$dstdir/$dstfile" 2>/dev/null \
|| $doit $mvcmd -f "$dstdir/$dstfile" "$rmtmp" 2>/dev/null \
|| {
echo "$0: cannot unlink or rename $dstdir/$dstfile" >&2
(exit 1); exit 1
}
else
:
fi
} &&
# Now rename the file to the real destination.
$doit $mvcmd "$dsttmp" "$dstdir/$dstfile"
}
}
fi || { (exit 1); exit 1; }
done
# The final little trick to "correctly" pass the exit status to the exit trap.
{
(exit 0); exit 0
}
# Local variables:
# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-end: "$"
# End:

360
app/src/main/jni/pdnsd/missing Normal file
View File

@ -0,0 +1,360 @@
#! /bin/sh
# Common stub for a few missing GNU programs while installing.
scriptversion=2005-06-08.21
# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005
# Free Software Foundation, Inc.
# Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.
if test $# -eq 0; then
echo 1>&2 "Try \`$0 --help' for more information"
exit 1
fi
run=:
# In the cases where this matters, `missing' is being run in the
# srcdir already.
if test -f configure.ac; then
configure_ac=configure.ac
else
configure_ac=configure.in
fi
msg="missing on your system"
case "$1" in
--run)
# Try to run requested program, and just exit if it succeeds.
run=
shift
"$@" && exit 0
# Exit code 63 means version mismatch. This often happens
# when the user try to use an ancient version of a tool on
# a file that requires a minimum version. In this case we
# we should proceed has if the program had been absent, or
# if --run hadn't been passed.
if test $? = 63; then
run=:
msg="probably too old"
fi
;;
-h|--h|--he|--hel|--help)
echo "\
$0 [OPTION]... PROGRAM [ARGUMENT]...
Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
error status if there is no known handling for PROGRAM.
Options:
-h, --help display this help and exit
-v, --version output version information and exit
--run try to run the given command, and emulate it if it fails
Supported PROGRAM values:
aclocal touch file \`aclocal.m4'
autoconf touch file \`configure'
autoheader touch file \`config.h.in'
automake touch all \`Makefile.in' files
bison create \`y.tab.[ch]', if possible, from existing .[ch]
flex create \`lex.yy.c', if possible, from existing .c
help2man touch the output file
lex create \`lex.yy.c', if possible, from existing .c
makeinfo touch the output file
tar try tar, gnutar, gtar, then tar without non-portable flags
yacc create \`y.tab.[ch]', if possible, from existing .[ch]
Send bug reports to <bug-automake@gnu.org>."
exit $?
;;
-v|--v|--ve|--ver|--vers|--versi|--versio|--version)
echo "missing $scriptversion (GNU Automake)"
exit $?
;;
-*)
echo 1>&2 "$0: Unknown \`$1' option"
echo 1>&2 "Try \`$0 --help' for more information"
exit 1
;;
esac
# Now exit if we have it, but it failed. Also exit now if we
# don't have it and --version was passed (most likely to detect
# the program).
case "$1" in
lex|yacc)
# Not GNU programs, they don't have --version.
;;
tar)
if test -n "$run"; then
echo 1>&2 "ERROR: \`tar' requires --run"
exit 1
elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
exit 1
fi
;;
*)
if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
# We have it, but it failed.
exit 1
elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
# Could not run --version or --help. This is probably someone
# running `$TOOL --version' or `$TOOL --help' to check whether
# $TOOL exists and not knowing $TOOL uses missing.
exit 1
fi
;;
esac
# If it does not exist, or fails to run (possibly an outdated version),
# try to emulate it.
case "$1" in
aclocal*)
echo 1>&2 "\
WARNING: \`$1' is $msg. You should only need it if
you modified \`acinclude.m4' or \`${configure_ac}'. You might want
to install the \`Automake' and \`Perl' packages. Grab them from
any GNU archive site."
touch aclocal.m4
;;
autoconf)
echo 1>&2 "\
WARNING: \`$1' is $msg. You should only need it if
you modified \`${configure_ac}'. You might want to install the
\`Autoconf' and \`GNU m4' packages. Grab them from any GNU
archive site."
touch configure
;;
autoheader)
echo 1>&2 "\
WARNING: \`$1' is $msg. You should only need it if
you modified \`acconfig.h' or \`${configure_ac}'. You might want
to install the \`Autoconf' and \`GNU m4' packages. Grab them
from any GNU archive site."
files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}`
test -z "$files" && files="config.h"
touch_files=
for f in $files; do
case "$f" in
*:*) touch_files="$touch_files "`echo "$f" |
sed -e 's/^[^:]*://' -e 's/:.*//'`;;
*) touch_files="$touch_files $f.in";;
esac
done
touch $touch_files
;;
automake*)
echo 1>&2 "\
WARNING: \`$1' is $msg. You should only need it if
you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
You might want to install the \`Automake' and \`Perl' packages.
Grab them from any GNU archive site."
find . -type f -name Makefile.am -print |
sed 's/\.am$/.in/' |
while read f; do touch "$f"; done
;;
autom4te)
echo 1>&2 "\
WARNING: \`$1' is needed, but is $msg.
You might have modified some files without having the
proper tools for further handling them.
You can get \`$1' as part of \`Autoconf' from any GNU
archive site."
file=`echo "$*" | sed -n 's/.*--output[ =]*\([^ ]*\).*/\1/p'`
test -z "$file" && file=`echo "$*" | sed -n 's/.*-o[ ]*\([^ ]*\).*/\1/p'`
if test -f "$file"; then
touch $file
else
test -z "$file" || exec >$file
echo "#! /bin/sh"
echo "# Created by GNU Automake missing as a replacement of"
echo "# $ $@"
echo "exit 0"
chmod +x $file
exit 1
fi
;;
bison|yacc)
echo 1>&2 "\
WARNING: \`$1' $msg. You should only need it if
you modified a \`.y' file. You may need the \`Bison' package
in order for those modifications to take effect. You can get
\`Bison' from any GNU archive site."
rm -f y.tab.c y.tab.h
if [ $# -ne 1 ]; then
eval LASTARG="\${$#}"
case "$LASTARG" in
*.y)
SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
if [ -f "$SRCFILE" ]; then
cp "$SRCFILE" y.tab.c
fi
SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
if [ -f "$SRCFILE" ]; then
cp "$SRCFILE" y.tab.h
fi
;;
esac
fi
if [ ! -f y.tab.h ]; then
echo >y.tab.h
fi
if [ ! -f y.tab.c ]; then
echo 'main() { return 0; }' >y.tab.c
fi
;;
lex|flex)
echo 1>&2 "\
WARNING: \`$1' is $msg. You should only need it if
you modified a \`.l' file. You may need the \`Flex' package
in order for those modifications to take effect. You can get
\`Flex' from any GNU archive site."
rm -f lex.yy.c
if [ $# -ne 1 ]; then
eval LASTARG="\${$#}"
case "$LASTARG" in
*.l)
SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
if [ -f "$SRCFILE" ]; then
cp "$SRCFILE" lex.yy.c
fi
;;
esac
fi
if [ ! -f lex.yy.c ]; then
echo 'main() { return 0; }' >lex.yy.c
fi
;;
help2man)
echo 1>&2 "\
WARNING: \`$1' is $msg. You should only need it if
you modified a dependency of a manual page. You may need the
\`Help2man' package in order for those modifications to take
effect. You can get \`Help2man' from any GNU archive site."
file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
if test -z "$file"; then
file=`echo "$*" | sed -n 's/.*--output=\([^ ]*\).*/\1/p'`
fi
if [ -f "$file" ]; then
touch $file
else
test -z "$file" || exec >$file
echo ".ab help2man is required to generate this page"
exit 1
fi
;;
makeinfo)
echo 1>&2 "\
WARNING: \`$1' is $msg. You should only need it if
you modified a \`.texi' or \`.texinfo' file, or any other file
indirectly affecting the aspect of the manual. The spurious
call might also be the consequence of using a buggy \`make' (AIX,
DU, IRIX). You might want to install the \`Texinfo' package or
the \`GNU make' package. Grab either from any GNU archive site."
# The file to touch is that specified with -o ...
file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
if test -z "$file"; then
# ... or it is the one specified with @setfilename ...
infile=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
file=`sed -n '/^@setfilename/ { s/.* \([^ ]*\) *$/\1/; p; q; }' $infile`
# ... or it is derived from the source name (dir/f.texi becomes f.info)
test -z "$file" && file=`echo "$infile" | sed 's,.*/,,;s,.[^.]*$,,'`.info
fi
# If the file does not exist, the user really needs makeinfo;
# let's fail without touching anything.
test -f $file || exit 1
touch $file
;;
tar)
shift
# We have already tried tar in the generic part.
# Look for gnutar/gtar before invocation to avoid ugly error
# messages.
if (gnutar --version > /dev/null 2>&1); then
gnutar "$@" && exit 0
fi
if (gtar --version > /dev/null 2>&1); then
gtar "$@" && exit 0
fi
firstarg="$1"
if shift; then
case "$firstarg" in
*o*)
firstarg=`echo "$firstarg" | sed s/o//`
tar "$firstarg" "$@" && exit 0
;;
esac
case "$firstarg" in
*h*)
firstarg=`echo "$firstarg" | sed s/h//`
tar "$firstarg" "$@" && exit 0
;;
esac
fi
echo 1>&2 "\
WARNING: I can't seem to be able to run \`tar' with the given arguments.
You may want to install GNU tar or Free paxutils, or check the
command line arguments."
exit 1
;;
*)
echo 1>&2 "\
WARNING: \`$1' is needed, and is $msg.
You might have modified some files without having the
proper tools for further handling them. Check the \`README' file,
it often tells you about the needed prerequisites for installing
this package. You may also peek at any GNU archive site, in case
some other package would contain this missing \`$1' program."
exit 1
;;
esac
exit 0
# Local variables:
# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-end: "$"
# End:

244
app/src/main/jni/pdnsd/pdnsd.spec.in Normal file
View File

@ -0,0 +1,244 @@
# rpmbuild spec file for pdnsd.
# with modifications by Paul Rombouts.
# Supported rpmbuild --define and --with options include:
#
# --with isdn Configure with --enable-isdn.
#
# --without poll Configure with --disable-poll
#
# --without nptl Configure with --with-thread-lib=linuxthreads.
#
# --with ipv6 Configure with --enable-ipv6.
#
# --without tcpqueries Configure with --disable-tcp-queries.
#
# --without debug Configure with --with-debug=0.
#
# --define "distro <distro>" Configure with --with-distribution=<distro>.
#
# --define "run_as_user <user>" Configure with --with-default-id=<user>.
# For RPMs the default <user> is "@def_id@".
#
# --define "run_as_uid <uid>" If the user defined by the previous option does not exist
# when the RPM is installed, the pre-install script will try
# to create a new user with numerical id <uid>.
#
# --define "cachedir <dir>" Configure with --with-cachedir=<dir>.
#
%{!?distro: %define distro @distribution@}
# The default run_as ID to use
%{!?run_as_user: %define run_as_user @def_id@}
# By default, if a new run_as_user is to be created, we let
# useradd choose the numerical uid, unless run_as_uid is defined.
#define run_as_uid 96
%{!?cachedir: %define cachedir @cachedir@}
%define conffile %{_sysconfdir}/pdnsd.conf
Summary: A caching dns proxy for small networks or dialin accounts
Name: @PACKAGE@
Version: @VERSION@
Release: @packagerelease@
License: GPLv3
Group: Daemons
Source: http://members.home.nl/p.a.rombouts/pdnsd/releases/%{name}-%{version}-%{release}.tar.gz
URL: http://members.home.nl/p.a.rombouts/pdnsd.html
Vendor: Paul A. Rombouts
Packager: Paul A. Rombouts <p.a.rombouts@home.nl>
Prefix: %{_prefix}
BuildRoot: %{_tmppath}/%{name}-%{version}-root
%description
pdnsd is a proxy DNS daemon with permanent (disk-)cache and the ability
to serve local records. It is designed to detect network outages or hangups
and to prevent DNS-dependent applications like Netscape Navigator from hanging.
The original author of pdnsd is Thomas Moestl, but pdnsd is no longer maintained
by him. This is an extensively revised version by Paul A. Rombouts.
For a description of the changes see http://members.home.nl/p.a.rombouts/pdnsd.html
and the file README.par in %{_docdir}/%{name}-%{version}
%{!?distro:You can specify the target distribution when you build the source RPM. For instance, if you're building for a Red Hat system call rpmbuild with:}
%{!?distro: --define "distro RedHat"}
%{?distro:This package was built for a %{distro} distribution.}
%{!?_with_isdn:It's possible to rebuild the source RPM with isdn support using the rpmbuild option:}
%{!?_with_isdn: --with isdn}
%{?_with_isdn:This package was built with isdn support enabled.}
%{!?_with_ipv6:It's possible to rebuild the source RPM with ipv6 support using the rpmbuild option:}
%{!?_with_ipv6: --with ipv6}
%{?_with_ipv6:This package was built with ipv6 support.}
%{?_without_poll:This package was built with the select(2) function instead of poll(2).}
%prep
%setup
%build
CFLAGS="${CFLAGS:-$RPM_OPT_FLAGS -Wall}" ./configure \
--prefix=%{_prefix} --sysconfdir=%{_sysconfdir} --mandir=%{_mandir} \
--with-cachedir="%{cachedir}" \
%{?distro:--with-distribution=%{distro}} --enable-specbuild \
--with-default-id=%{run_as_user} \
%{?_with_isdn:--enable-isdn} \
%{?_without_poll:--disable-poll} \
%{?_without_nptl:--with-thread-lib=linuxthreads} \
%{?_with_ipv6:--enable-ipv6} \
%{?_without_tcpqueries:--disable-tcp-queries} \
%{?_without_debug:--with-debug=0}
make
%install
%if "%{run_as_user}" != "nobody"
[ "$(id -un)" != root ] ||
id -u %{run_as_user} > /dev/null 2>&1 ||
/usr/sbin/useradd -c "Proxy DNS daemon" %{?run_as_uid:-u %{run_as_uid}} \
-s /sbin/nologin -r -d "%{cachedir}" %{run_as_user} || {
set +x
echo "Cannot create user \"%{run_as_user}\"%{?run_as_uid: with uid=%{run_as_uid}}"
echo "Please select another numerical uid and rebuild with --define \"run_as_uid uid\""
echo "or create a user named \"%{run_as_user}\" by hand and try again."
exit 1
}
%endif
rm -rf "$RPM_BUILD_ROOT"
make DESTDIR="$RPM_BUILD_ROOT" install
cp -f file-list.base file-list
find doc contrib -not -type d -not -iname '*makefile' -not -name '*.am' \
-not -name '*.in' -not -path 'doc/*.pl' |
sed -e 's/^/%doc --parents /' >> file-list
CURDIR=$PWD; cd "$RPM_BUILD_ROOT"
find . -not -type d '(' -not -name 'pdnsd.conf*' -or -name 'pdnsd.conf.[1-9]*' ')' \
-not -path '.%{_docdir}/*' -not -path './var/*' |
sed -e 's/^\.//
\:/man:{
/\.gz$/!s/$/.gz/
}' >> "$CURDIR/file-list"
%clean
rm -rf "$RPM_BUILD_ROOT"
#rm -rf %{_builddir}/%{name}-%{srcver}
%files -f file-list
%pre
# First stop any running pdnsd daemons
%if "%{distro}" == "SuSE"
/sbin/init.d/pdnsd stop >/dev/null 2>&1
%endif
%if "%{distro}" == "RedHat"
if [ -f /var/lock/subsys/pdnsd ]; then
if /sbin/pidof pdnsd > /dev/null; then
/sbin/service pdnsd stop >/dev/null 2>&1
if [ "$1" -ge 2 ]; then touch /var/lock/subsys/pdnsd; fi
else
rm -f /var/lock/subsys/pdnsd
fi
fi
%endif
%if "%{run_as_user}" != "nobody"
# Add the "pdnsd" user
id -u %{run_as_user} > /dev/null 2>&1 ||
/usr/sbin/useradd -c "Proxy DNS daemon" %{?run_as_uid:-u %{run_as_uid}} \
-s /sbin/nologin -r -d "%{cachedir}" %{run_as_user} || {
echo "Cannot create user \"%{run_as_user}\"%{?run_as_uid: with uid=%{run_as_uid}}"
echo "Please create a user named \"%{run_as_user}\" by hand and try again."
exit 1
}
[ "$(id -gn %{run_as_user})" = %{run_as_user} ] || {
echo "user \"%{run_as_user}\" does not have an corresponding group called \"%{run_as_user}\""
echo "Please change the initial group of user \"%{run_as_user}\" to \"%{run_as_user}\" and try again."
exit 1
}
if [ -f "%{conffile}" ] &&
grep -v -e '^[[:blank:]]*\(#\|\/\/\)' "%{conffile}" |
grep -q -e '\<run_as[[:blank:]]*=[[:blank:]]*"\?nobody"\?[[:blank:]]*;'
then
echo "An existing pdnsd configuration file %{conffile} has been detected, containing the run_as user ID \"nobody\""
echo "For security reasons it is recommended that pdnsd run as a seperate user \"%{run_as_user}\""
mv -f "%{conffile}" "%{conffile}.rpmsave" &&
echo "Your original %{conffile} has been saved as %{conffile}.rpmsave" &&
sed -e '/^[[:blank:]]*\(#\|\/\/\)/!s/\(\<run_as[[:blank:]]*=[[:blank:]]*\)"\?nobody"\?[[:blank:]]*;/\1"%{run_as_user}";/g' \
"%{conffile}.rpmsave" > "%{conffile}" &&
echo "In %{conffile} runs_as=\"nobody\" has been replaced by run_as=\"%{run_as_user}\""
fi
%endif
if [ -f "%{cachedir}/pdnsd.cache" ]; then
chown -c %{run_as_user}:%{run_as_user} "%{cachedir}/pdnsd.cache"
fi
%post
%if "%{distro}" == "SuSE"
if [ -w /etc/rc.config ]; then
grep "START_PDNSD" /etc/rc.config > /dev/null
if [ $? -ne 0 ] ; then
echo -e \
"\n\n#\n# Set to yes to start pdnsd at boot time\n#\nSTART_PDNSD=yes" \
>> /etc/rc.config
fi
fi
%endif
%if "%{distro}" == "RedHat"
if [ "$1" = 1 ]; then
/sbin/chkconfig --add pdnsd
fi
%endif
%preun
%if "%{distro}" == "RedHat"
if [ "$1" = 0 ]; then
/sbin/service pdnsd stop >/dev/null 2>&1
/sbin/chkconfig --del pdnsd
fi
%endif
%postun
%if "%{distro}" == "RedHat"
if [ "$1" -ge 1 ]; then
/sbin/service pdnsd condrestart >/dev/null 2>&1
fi
%endif
%changelog
* Tue Jan 31 2012 Paul A. Rombouts <p.a.rombouts@home.nl>
- Prevent makefiles and perl scripts from being installed
in the documentation directory.
* Sat Jan 28 2012 Paul A. Rombouts <p.a.rombouts@home.nl>
- Update the (Source) URLs.
* Sat Aug 4 2007 Paul Rombouts <p.a.rombouts@home.nl>
- License is now GPL version 3
* Fri Mar 24 2006 Paul Rombouts <p.a.rombouts@home.nl>
- Instead of using a fixed default value for run_as_uid,
I let useradd choose the uid if run_as_uid is undefined.
* Thu Dec 29 2005 Paul Rombouts <p.a.rombouts@home.nl>
- TCP-query support is now compiled in by default,
but can be disabled using "--without tcpqueries".
* Sun Jul 20 2003 Paul Rombouts <p.a.rombouts@home.nl>
- Changed default run_as ID from "nobody" to "pdnsd"
* Fri Jun 20 2003 Paul Rombouts <p.a.rombouts@home.nl>
- Added configuration option for NPTL.
* Sat Jun 07 2003 Paul Rombouts <p.a.rombouts@home.nl>
- Added automatic definition of distro using _vendor macro.
* Thu May 22 2003 Paul Rombouts <p.a.rombouts@home.nl>
- Ensured that modification times of acconfig.h and configure.in
are not changed by patching to avoid unwanted reconfigure during make phase.
* Tue May 20 2003 Paul Rombouts <p.a.rombouts@home.nl>
- Applied my customized patch file. See READ.par for details.
* Sun May 16 2001 Thomas Moestl <tmoestl@gmx.net>
- Make use of chkconfig for Red Hat (patch by Christian Engstler)
* Sun Mar 25 2001 Thomas Moestl <tmoestl@gmx.net>
- Merged SuSE fixes by Christian Engstler
* Fri Feb 09 2001 Thomas Moestl <tmoestl@gmx.net>
- Merged in a spec fix for mapage inclusion contributed by Sourav K.
Mandal
* Sun Nov 26 2000 Thomas Moestl <tmoestl@gmx.net>
- Added some patches contributed by Bernd Leibing
* Tue Aug 15 2000 Thomas Moestl <tmoestl@gmx.net>
- Added the distro for configure
* Tue Jul 11 2000 Sourav K. Mandal <smandal@mit.edu>
- autoconf/automake modifications

24
app/src/main/jni/pdnsd/src/Makefile.am Normal file
View File

@ -0,0 +1,24 @@
sbin_PROGRAMS = pdnsd
pdnsd_CFLAGS = -DCONFDIR='"$(sysconfdir)"' $(thread_CFLAGS)
pdnsd_SOURCES = conf-parser.c conff.c consts.c debug.c dns.c dns_answer.c \
dns_query.c error.c helpers.c icmp.c list.c main.c netdev.c rr_types.c \
status.c servers.c thread.c cache.c hash.c conf-parser.h \
conf-keywords.h conff.h consts.h debug.h dns.h dns_answer.h \
dns_query.h error.h helpers.h icmp.h ipvers.h list.h netdev.h \
rr_types.h servers.h status.h thread.h cache.h hash.h pdnsd_assert.h \
freebsd_netinet_ip_icmp.h
EXTRA_DIST = make_rr_types_h.pl rr_types.in
## Try to do this last
SUBDIRS = . pdnsd-ctl rc test
$(pdnsd_OBJECTS): rr_types.h
rr_types.h: make_rr_types_h.pl rr_types.in
perl make_rr_types_h.pl rr_types.in > rr_types.h

921
app/src/main/jni/pdnsd/src/Makefile.in Normal file
View File

@ -0,0 +1,921 @@
# Makefile.in generated by automake 1.11.1 from Makefile.am.
# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation,
# Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
@SET_MAKE@
VPATH = @srcdir@
pkgdatadir = $(datadir)/@PACKAGE@
pkgincludedir = $(includedir)/@PACKAGE@
pkglibdir = $(libdir)/@PACKAGE@
pkglibexecdir = $(libexecdir)/@PACKAGE@
am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
install_sh_DATA = $(install_sh) -c -m 644
install_sh_PROGRAM = $(install_sh) -c
install_sh_SCRIPT = $(install_sh) -c
INSTALL_HEADER = $(INSTALL_DATA)
transform = $(program_transform_name)
NORMAL_INSTALL = :
PRE_INSTALL = :
POST_INSTALL = :
NORMAL_UNINSTALL = :
PRE_UNINSTALL = :
POST_UNINSTALL = :
sbin_PROGRAMS = pdnsd$(EXEEXT)
subdir = src
DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = $(top_srcdir)/configure.in
am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
$(ACLOCAL_M4)
mkinstalldirs = $(install_sh) -d
CONFIG_HEADER = $(top_builddir)/config.h
CONFIG_CLEAN_FILES =
CONFIG_CLEAN_VPATH_FILES =
am__installdirs = "$(DESTDIR)$(sbindir)"
PROGRAMS = $(sbin_PROGRAMS)
am_pdnsd_OBJECTS = pdnsd-conf-parser.$(OBJEXT) pdnsd-conff.$(OBJEXT) \
pdnsd-consts.$(OBJEXT) pdnsd-debug.$(OBJEXT) \
pdnsd-dns.$(OBJEXT) pdnsd-dns_answer.$(OBJEXT) \
pdnsd-dns_query.$(OBJEXT) pdnsd-error.$(OBJEXT) \
pdnsd-helpers.$(OBJEXT) pdnsd-icmp.$(OBJEXT) \
pdnsd-list.$(OBJEXT) pdnsd-main.$(OBJEXT) \
pdnsd-netdev.$(OBJEXT) pdnsd-rr_types.$(OBJEXT) \
pdnsd-status.$(OBJEXT) pdnsd-servers.$(OBJEXT) \
pdnsd-thread.$(OBJEXT) pdnsd-cache.$(OBJEXT) \
pdnsd-hash.$(OBJEXT)
pdnsd_OBJECTS = $(am_pdnsd_OBJECTS)
pdnsd_LDADD = $(LDADD)
pdnsd_LINK = $(CCLD) $(pdnsd_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
$(LDFLAGS) -o $@
DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)
depcomp = $(SHELL) $(top_srcdir)/depcomp
am__depfiles_maybe = depfiles
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$(pdnsd_OBJECTS): rr_types.h
rr_types.h: make_rr_types_h.pl rr_types.in
perl make_rr_types_h.pl rr_types.in > rr_types.h
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

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/* cache.h - Definitions for the dns cache
Copyright (C) 2000 Thomas Moestl
Copyright (C) 2003, 2004, 2005, 2010, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef _CACHE_H_
#define _CACHE_H_
#include <config.h>
#include "ipvers.h"
#include <stdio.h>
#include "list.h"
#include "dns.h"
#include "conff.h"
struct rr_lent_s;
/*
* These values are converted to host byte order. the data is _not_.
*/
typedef struct rr_b_s {
struct rr_b_s *next; /* this is the next pointer in the dns_cent_t list. */
unsigned rdlen;
#if ALLOW_LOCAL_AAAA || defined(ENABLE_IPV6)
struct in6_addr data[0]; /* dummy for alignment */
#else
struct in_addr data[0];
#endif
} rr_bucket_t;
typedef struct {
struct rr_lent_s *lent; /* this points to the list entry */
time_t ttl;
time_t ts;
unsigned short flags;
rr_bucket_t *rrs;
} rr_set_t;
typedef struct {
unsigned char *qname; /* Name of the domain in length byte - string notation. */
size_t cs; /* Size of the cache entry, including RR sets. */
unsigned short num_rrs; /* The number of RR sets. When this decreases to 0, the cent is deleted. */
unsigned short flags; /* Flags for the whole domain. */
union {
struct { /* Fields used only for negatively cached domains. */
struct rr_lent_s *lent; /* list entry for the whole cent. */
time_t ttl; /* TTL for negative caching. */
time_t ts; /* Timestamp. */
} neg;
struct { /* Fields used only for domains that actually exist. */
rr_set_t *(rrmu[NRRMU]); /* The most used records.
Use the the value obtained from rrlkuptab[] as index. */
rr_set_t **rrext; /* Pointer (may be NULL) to an array of size NNRREXT storing the
less frequently used records. */
} rr;
};
unsigned char c_ns,c_soa; /* Number of trailing name elements in qname to use to find NS or SOA
records to add to the authority section of a response. */
} dns_cent_t;
/* This value is used to represent an undefined c_ns or c_soa field. */
#define cundef 0xff
/*
* the flag values for RR sets in the cache
*/
#define CF_NEGATIVE 1 /* this one is for per-RRset negative caching*/
#define CF_LOCAL 2 /* Local zone entry */
#define CF_AUTH 4 /* authoritative record */
#define CF_NOCACHE 8 /* Only hold for the cache latency time period, then purge.
* Not really written to cache, but used by add_cache. */
#define CF_ADDITIONAL 16 /* This was fetched as an additional or "off-topic" record. */
#define CF_NOPURGE 32 /* Do not purge this record */
#define CF_ROOTSERV 64 /* This record was directly obtained from a root server */
#define CFF_NOINHERIT (CF_LOCAL|CF_AUTH|CF_ADDITIONAL|CF_ROOTSERV) /* not to be inherited on requery */
/*
* the flag values for whole domains in the cache
*/
#define DF_NEGATIVE 1 /* this one is for whole-domain negative caching (created on NXDOMAIN)*/
#define DF_LOCAL 2 /* local record (in conj. with DF_NEGATIVE) */
#define DF_AUTH 4 /* authoritative record */
#define DF_NOCACHE 8 /* Only hold for the cache latency time period, then purge.
* Only used for negatively cached domains.
* Not really written to cache, but used by add_cache. */
#define DF_WILD 16 /* subdomains of this domain have wildcard records */
/* #define DFF_NOINHERIT (DF_NEGATIVE) */ /* not to be inherited on requery */
enum {w_wild=1, w_neg, w_locnerr}; /* Used to distinguish different types of wildcard records. */
#if DEBUG>0
#define NCFLAGS 7
#define NDFLAGS 5
#define CFLAGSTRLEN (NCFLAGS*4)
#define DFLAGSTRLEN (NDFLAGS*4)
extern const char cflgnames[];
extern const char dflgnames[];
char *flags2str(unsigned flags,char *buf,int nflags,const char *flgnames);
#define cflags2str(flags,buf) flags2str(flags,buf,NCFLAGS,cflgnames)
#define dflags2str(flags,buf) flags2str(flags,buf,NDFLAGS,dflgnames)
#endif
/*
* This is the time in secs any record remains at least in the cache before it is purged.
* (exception is that the cache is full)
*/
#define CACHE_LAT 120
#define CLAT_ADJ(ttl) ((ttl)<CACHE_LAT?CACHE_LAT:(ttl))
/* This is used internally to check if a rrset has timed out. */
#define timedout(rrset) ((rrset)->ts+CLAT_ADJ((rrset)->ttl)<time(NULL))
/* This is used internally to check if a negatively cached domain has timed out.
Only use if the DF_NEGATIVE bit is set! */
#define timedout_nxdom(cent) ((cent)->neg.ts+CLAT_ADJ((cent)->neg.ttl)<time(NULL))
extern volatile short int use_cache_lock;
#ifdef ALLOC_DEBUG
#define DBGPARAM ,int dbg
#define DBGARG ,dbg
#define DBG0 ,0
#define DBG1 ,1
#else
#define DBGPARAM
#define DBGARG
#define DBG0
#define DBG1
#endif
/* Initialize the cache. Call only once. */
#define init_cache mk_dns_hash
/* Initialize the cache lock. Call only once. */
inline static void init_cache_lock() __attribute__((always_inline));
inline static void init_cache_lock()
{
use_cache_lock=1;
}
int empty_cache(slist_array sla);
void destroy_cache(void);
void read_disk_cache(void);
void write_disk_cache(void);
int report_cache_stat(int f);
int dump_cache(int fd, const unsigned char *name, int exact);
/*
* add_cache expects the dns_cent_t to be filled.
*/
void add_cache(dns_cent_t *cent);
int add_reverse_cache(dns_cent_t * cent);
void del_cache(const unsigned char *name);
void invalidate_record(const unsigned char *name);
int set_cent_flags(const unsigned char *name, unsigned flags);
unsigned char *getlocalowner(unsigned char *name,int tp);
dns_cent_t *lookup_cache(const unsigned char *name, int *wild);
rr_set_t *lookup_cache_local_rrset(const unsigned char *name, int type);
#if 0
int add_cache_rr_add(const unsigned char *name, int tp, time_t ttl, time_t ts, unsigned flags, unsigned dlen, void *data, unsigned long serial);
#endif
inline static unsigned int mk_flag_val(servparm_t *server)
__attribute__((always_inline));
inline static unsigned int mk_flag_val(servparm_t *server)
{
unsigned int fl=0;
if (!server->purge_cache)
fl|=CF_NOPURGE;
if (server->nocache)
fl|=CF_NOCACHE;
if (server->rootserver)
fl|=CF_ROOTSERV;
return fl;
}
int init_cent(dns_cent_t *cent, const unsigned char *qname, time_t ttl, time_t ts, unsigned flags DBGPARAM);
int add_cent_rrset_by_type(dns_cent_t *cent, int type, time_t ttl, time_t ts, unsigned flags DBGPARAM);
int add_cent_rr(dns_cent_t *cent, int type, time_t ttl, time_t ts, unsigned flags,unsigned dlen, void *data DBGPARAM);
int del_rrset(rr_set_t *rrs DBGPARAM);
void free_cent(dns_cent_t *cent DBGPARAM);
void free_cent0(void *ptr);
void negate_cent(dns_cent_t *cent, time_t ttl, time_t ts);
void del_cent(dns_cent_t *cent);
/* Because this is empty by now, it is defined as an empty macro to save overhead.*/
/*void free_rr(rr_bucket_t cent);*/
#define free_rr(x)
dns_cent_t *copy_cent(dns_cent_t *cent DBGPARAM);
#if 0
unsigned long get_serial(void);
#endif
/* Get pointer to rrset given cache entry and rr type value. */
inline static rr_set_t *getrrset(dns_cent_t *cent, int type)
__attribute__((always_inline));
inline static rr_set_t *getrrset(dns_cent_t *cent, int type)
{
if(!(cent->flags&DF_NEGATIVE)) {
int tpi= type - T_MIN;
if(tpi>=0 && tpi<T_NUM) {
unsigned int idx = rrlkuptab[tpi];
if(idx < NRRMU)
return cent->rr.rrmu[idx];
else {
idx -= NRRMU;
if(idx < NRREXT) {
rr_set_t **rrext= cent->rr.rrext;
if(rrext)
return rrext[idx];
}
}
}
}
return NULL;
}
/* This version of getrrset is slightly more efficient,
but also more dangerous, because it performs less checks.
It is safe to use if T_MIN <= type <= T_MAX and cent
is not negative.
*/
inline static rr_set_t *getrrset_eff(dns_cent_t *cent, int type)
__attribute__((always_inline));
inline static rr_set_t *getrrset_eff(dns_cent_t *cent, int type)
{
unsigned int idx = rrlkuptab[type-T_MIN];
if(idx < NRRMU)
return cent->rr.rrmu[idx];
else {
idx -= NRRMU;
if(idx < NRREXT) {
rr_set_t **rrext= cent->rr.rrext;
if(rrext)
return rrext[idx];
}
}
return NULL;
}
/* have_rr() tests whether a cache entry has at least one record of a given type.
Only use if T_MIN <= type <=T_MAX
*/
inline static int have_rr(dns_cent_t *cent, int type)
__attribute__((always_inline));
inline static int have_rr(dns_cent_t *cent, int type)
{
rr_set_t *rrset;
return !(cent->flags&DF_NEGATIVE) && (rrset=getrrset_eff(cent, type)) && rrset->rrs;
}
/* Some quick and dirty and hopefully fast macros. */
#define PDNSD_NOT_CACHED_TYPE(type) ((type)<T_MIN || (type)>T_MAX || rrlkuptab[(type)-T_MIN]>=NRRTOT)
/* This is useful for iterating over all the RR types in a cache entry in strict ascending order. */
#define NRRITERLIST(cent) ((cent)->flags&DF_NEGATIVE?0:(cent)->rr.rrext?NRRTOT:NRRMU)
#define RRITERLIST(cent) ((cent)->flags&DF_NEGATIVE?NULL:(cent)->rr.rrext?rrcachiterlist:rrmuiterlist)
/* The following macros use array indices as arguments, not RR type values! */
#define GET_RRSMU(cent,i) (!((cent)->flags&DF_NEGATIVE)?(cent)->rr.rrmu[i]:NULL)
#define GET_RRSEXT(cent,i) (!((cent)->flags&DF_NEGATIVE) && (cent)->rr.rrext?(cent)->rr.rrext[i]:NULL)
#define HAVE_RRMU(cent,i) (!((cent)->flags&DF_NEGATIVE) && (cent)->rr.rrmu[i] && (cent)->rr.rrmu[i]->rrs)
#define HAVE_RREXT(cent,i) (!((cent)->flags&DF_NEGATIVE) && (cent)->rr.rrext && (cent)->rr.rrext[i] && (cent)->rr.rrext[i]->rrs)
#define RRARR_LEN(cent) ((cent)->flags&DF_NEGATIVE?0:(cent)->rr.rrext?NRRTOT:NRRMU)
/* This allows us to index the RR-set arrays in a cache entry as if they formed one contiguous array. */
#define RRARR_INDEX_TESTEXT(cent,i) ((cent)->flags&DF_NEGATIVE?NULL:(i)<NRRMU?(cent)->rr.rrmu[i]:(cent)->rr.rrext?(cent)->rr.rrext[(i)-NRRMU]:NULL)
/* This gets the address where the pointer to an RR-set is stored in a cache entry,
given the cache entry and an RR-set index.
Address may be NULL if no storage space for the type has been allocated. */
#define RRARR_INDEX_PA_TESTEXT(cent,i) ((cent)->flags&DF_NEGATIVE?NULL:(i)<NRRMU?&(cent)->rr.rrmu[i]:(cent)->rr.rrext?&(cent)->rr.rrext[(i)-NRRMU]:NULL)
/* The following macros should only be used if 0 <= i < RRARR_LEN(cent) ! */
#define RRARR_INDEX(cent,i) ((i)<NRRMU?(cent)->rr.rrmu[i]:(cent)->rr.rrext[(i)-NRRMU])
#define RRARR_INDEX_PA(cent,i) ((i)<NRRMU?&(cent)->rr.rrmu[i]:&(cent)->rr.rrext[(i)-NRRMU])
#endif

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/* conf-keywords.h - Tables used by parser of configuration file.
Based on information previously contained in conf-lex.y and conf-parse.y
Copyright (C) 2004,2005,2006,2007,2008,2009,2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
enum {
ERROR,
GLOBAL,
SERVER,
RR,
NEG,
SOURCE,
INCLUDE_F,
PERM_CACHE,
CACHE_DIR,
SERVER_PORT,
SERVER_IP,
OUTGOING_IP,
SCHEME_FILE,
LINKDOWN_KLUGE,
MAX_TTL,
MIN_TTL,
RUN_AS,
STRICT_SETUID,
USE_NSS,
PARANOID,
IGNORE_CD,
STATUS_CTL,
DAEMON,
C_TCP_SERVER,
PID_FILE,
C_VERBOSITY,
C_QUERY_METHOD,
RUN_IPV4,
IPV4_6_PREFIX,
C_DEBUG,
C_CTL_PERMS,
C_PROC_LIMIT,
C_PROCQ_LIMIT,
TCP_QTIMEOUT,
C_PAR_QUERIES,
C_RAND_RECS,
NEG_TTL,
NEG_RRS_POL,
NEG_DOMAIN_POL,
QUERY_PORT_START,
QUERY_PORT_END,
UDP_BUFSIZE,
DELEGATION_ONLY,
IP,
PORT,
SCHEME,
UPTEST,
TIMEOUT,
PING_TIMEOUT,
PING_IP,
UPTEST_CMD,
QUERY_TEST_NAME,
INTERVAL,
INTERFACE,
DEVICE,
PURGE_CACHE,
CACHING,
LEAN_QUERY,
EDNS_QUERY,
PRESET,
PROXY_ONLY,
ROOT_SERVER,
RANDOMIZE_SERVERS,
INCLUDE,
EXCLUDE,
POLICY,
REJECTLIST,
REJECTPOLICY,
REJECTRECURSIVELY,
LABEL,
A,
PTR,
MX,
SOA,
CNAME,
TXT,
SPF,
NAME,
OWNER,
TTL,
TYPES,
FILET,
SERVE_ALIASES,
AUTHREC,
REVERSE
};
/* Table for looking up section headers. Order alphabetically! */
static const namevalue_t section_headers[]= {
{"global", GLOBAL},
{"include", INCLUDE_F},
{"neg", NEG},
{"rr", RR},
{"server", SERVER},
{"source", SOURCE}
};
/* Table for looking up global options. Order alphabetically! */
static const namevalue_t global_options[]= {
{"cache_dir", CACHE_DIR},
{"ctl_perms", C_CTL_PERMS},
{"daemon", DAEMON},
{"debug", C_DEBUG},
{"delegation_only", DELEGATION_ONLY},
{"ignore_cd", IGNORE_CD},
{"interface", SERVER_IP},
{"ipv4_6_prefix", IPV4_6_PREFIX},
{"linkdown_kluge", LINKDOWN_KLUGE},
{"max_ttl", MAX_TTL},
{"min_ttl", MIN_TTL},
{"neg_domain_pol", NEG_DOMAIN_POL},
{"neg_rrs_pol", NEG_RRS_POL},
{"neg_ttl", NEG_TTL},
{"outgoing_ip", OUTGOING_IP},
{"outside_interface", OUTGOING_IP},
{"par_queries", C_PAR_QUERIES},
{"paranoid", PARANOID},
{"perm_cache", PERM_CACHE},
{"pid_file", PID_FILE},
{"proc_limit", C_PROC_LIMIT},
{"procq_limit", C_PROCQ_LIMIT},
{"query_method", C_QUERY_METHOD},
{"query_port_end", QUERY_PORT_END},
{"query_port_start", QUERY_PORT_START},
{"randomize_recs", C_RAND_RECS},
{"run_as", RUN_AS},
{"run_ipv4", RUN_IPV4},
{"scheme_file", SCHEME_FILE},
{"server_ip", SERVER_IP},
{"server_port", SERVER_PORT},
{"status_ctl", STATUS_CTL},
{"strict_setuid", STRICT_SETUID},
{"tcp_qtimeout", TCP_QTIMEOUT},
{"tcp_server", C_TCP_SERVER},
{"timeout", TIMEOUT},
{"udpbufsize", UDP_BUFSIZE},
{"use_nss", USE_NSS},
{"verbosity", C_VERBOSITY}
};
/* Table for looking up server options. Order alphabetically! */
static const namevalue_t server_options[]= {
{"caching", CACHING},
{"device", DEVICE},
{"edns_query", EDNS_QUERY},
{"exclude", EXCLUDE},
{"file", FILET},
{"include", INCLUDE},
{"interface", INTERFACE},
{"interval", INTERVAL},
{"ip", IP},
{"label", LABEL},
{"lean_query", LEAN_QUERY},
{"ping_ip", PING_IP},
{"ping_timeout", PING_TIMEOUT},
{"policy", POLICY},
{"port", PORT},
{"preset", PRESET},
{"proxy_only", PROXY_ONLY},
{"purge_cache", PURGE_CACHE},
{"query_test_name", QUERY_TEST_NAME},
{"randomize_servers", RANDOMIZE_SERVERS},
{"reject", REJECTLIST},
{"reject_policy", REJECTPOLICY},
{"reject_recursively", REJECTRECURSIVELY},
{"root_server", ROOT_SERVER},
{"scheme", SCHEME},
{"timeout", TIMEOUT},
{"uptest", UPTEST},
{"uptest_cmd", UPTEST_CMD}
};
/* Table for looking up rr options. Order alphabetically! */
static const namevalue_t rr_options[]= {
{"a", A},
{"authrec", AUTHREC},
{"cname", CNAME},
{"mx", MX},
{"name", NAME},
{"ns", OWNER},
{"owner", OWNER},
{"ptr", PTR},
{"reverse", REVERSE},
{"soa", SOA},
{"spf", SPF},
{"ttl", TTL},
{"txt", TXT}
};
/* Table for looking up source options. Order alphabetically! */
static const namevalue_t source_options[]= {
{"authrec", AUTHREC},
{"file", FILET},
{"ns", OWNER},
{"owner", OWNER},
{"serve_aliases", SERVE_ALIASES},
{"ttl", TTL}
};
/* Table for looking up include options. Order alphabetically! */
static const namevalue_t include_options[]= {
{"file", FILET}
};
/* Table for looking up neg options. Order alphabetically! */
static const namevalue_t neg_options[]= {
{"name", NAME},
{"ttl", TTL},
{"types", TYPES}
};

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/* conf-parser.h - definitions for parser of pdnsd config files.
The parser was rewritten in C from scratch and doesn't require (f)lex
or yacc/bison.
Copyright (C) 2004,2008 Paul A. Rombouts.
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef CONF_PARSER_H
#define CONF_PARSER_H
int confparse(FILE* in, char *prestr, globparm_t *global, servparm_array *servers, int includedepth, char **errstr);
#endif /* CONF_PARSER_H */

544
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/* conff.c - Maintain configuration information
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include <pwd.h>
#include "ipvers.h"
#include "conff.h"
#include "consts.h"
#include "helpers.h"
#include "conf-parser.h"
#include "servers.h"
#include "icmp.h"
globparm_t global={
perm_cache: 2048,
cache_dir: NULL,
pidfile: NULL,
port: 53,
a: PDNSD_A_INITIALIZER,
out_a: PDNSD_A_INITIALIZER,
#ifdef ENABLE_IPV6
ipv4_6_prefix: IN6ADDR_ANY_INIT,
#endif
max_ttl: 604800,
min_ttl: 120,
neg_ttl: 900,
neg_rrs_pol: C_DEFAULT,
neg_domain_pol: C_AUTH,
verbosity: VERBOSITY,
run_as: "",
daemon: 0,
debug: 0,
stat_pipe: 0,
notcp: 0,
strict_suid: 1,
use_nss: 1,
paranoid: 0,
lndown_kluge: 0,
onquery: 0,
rnd_recs: 1,
ctl_perms: 0600,
scheme_file: NULL,
proc_limit: 40,
procq_limit: 60,
tcp_qtimeout: TCP_TIMEOUT,
timeout: 0,
par_queries: PAR_QUERIES,
query_method: M_PRESET,
query_port_start: 1024,
query_port_end: 65535,
udpbufsize: 1024,
deleg_only_zones: NULL
};
servparm_t serv_presets={
port: 53,
uptest: C_NONE,
timeout: 120,
interval: 900,
ping_timeout: 600,
scheme: "",
uptest_cmd: NULL,
uptest_usr: "",
interface: "",
device: "",
query_test_name: NULL,
label: NULL,
purge_cache: 0,
nocache: 0,
lean_query: 1,
edns_query: 0,
is_proxy: 0,
rootserver: 0,
rand_servers: 0,
preset: 1,
rejectrecursively: 0,
rejectpolicy: C_FAIL,
policy: C_INCLUDED,
alist: NULL,
atup_a: NULL,
reject_a4: NULL,
#if ALLOW_LOCAL_AAAA
reject_a6: NULL,
#endif
ping_a: PDNSD_A_INITIALIZER
};
servparm_array servers=NULL;
static void free_zones(zone_array za);
static void free_server_data(servparm_array sa);
static int report_server_stat(int f,int i);
/*
* Read a configuration file, saving the results in a (separate) global section and servers array,
* and the cache.
*
* char *nm should contain the name of the file to read. If it is NULL, the name of the config file
* read during startup is used.
*
* globparm_t *global should point to a struct which will be used to store the data of the
* global section(s). If it is NULL, no global sections are allowed in the
* file.
*
* servparm_array *servers should point to a dynamic array which will be grown to store the data
* of the server sections. If it is NULL, no server sections are allowed
* in the file.
*
* char **errstr is used to return a possible error message.
* In case of failure, *errstr will refer to a newly allocated string.
*
* read_config_file returns 1 on success, 0 on failure.
*/
int read_config_file(const char *nm, globparm_t *global, servparm_array *servers, int includedepth, char **errstr)
{
int retval=0;
const char *conftype= (global?"config":"include");
FILE *in;
if (nm==NULL)
nm=conf_file;
if (!(in=fopen(nm,"r"))) {
if(asprintf(errstr,"Error: Could not open %s file %s: %s",conftype,nm,strerror(errno))<0)
*errstr=NULL;
return 0;
}
retval=confparse(in,NULL,global,servers,includedepth,errstr);
close_file:
if(fclose(in) && retval) {
if(asprintf(errstr,"Error: Could not close %s file %s: %s",
conftype,nm,strerror(errno))<0)
*errstr=NULL;
return 0;
}
if(retval && servers && !DA_NEL(*servers)) {
if(asprintf(errstr,"Error: no server sections defined in config file %s",nm)<0)
*errstr=NULL;
return 0;
}
return retval;
}
/*
* Re-Read the configuration file.
* Return 1 on success, 0 on failure.
* In case of failure, the old configuration will be unchanged (although the cache may not) and
* **errstr will refer to a newly allocated string containing an error message.
*/
int reload_config_file(const char *nm, char **errstr)
{
globparm_t global_new;
servparm_array servers_new;
global_new=global;
global_new.cache_dir=NULL;
global_new.pidfile=NULL;
global_new.scheme_file=NULL;
global_new.deleg_only_zones=NULL;
global_new.onquery=0;
servers_new=NULL;
if(read_config_file(nm,&global_new,&servers_new,0,errstr)) {
if(global_new.cache_dir && strcmp(global_new.cache_dir,global.cache_dir)) {
*errstr=strdup("Cannot reload config file: the specified cache_dir directory has changed.\n"
"Try restarting pdnsd instead.");
goto cleanup_return;
}
if(global_new.pidfile && (!global.pidfile || strcmp(global_new.pidfile,global.pidfile))) {
*errstr=strdup("Cannot reload config file: the specified pid_file has changed.\n"
"Try restarting pdnsd instead.");
goto cleanup_return;
}
if(global_new.scheme_file && strcmp(global_new.scheme_file,global.scheme_file)) {
*errstr=strdup("Cannot reload config file: the specified scheme_file has changed.\n"
"Try restarting pdnsd instead.");
goto cleanup_return;
}
if(global_new.port!=global.port) {
*errstr=strdup("Cannot reload config file: the specified server_port has changed.\n"
"Try restarting pdnsd instead.");
goto cleanup_return;
}
if(!ADDR_EQUIV(&global_new.a,&global.a)) {
*errstr=strdup("Cannot reload config file: the specified interface address (server_ip) has changed.\n"
"Try restarting pdnsd instead.");
goto cleanup_return;
}
#ifdef ENABLE_IPV6
if(!IN6_ARE_ADDR_EQUAL(&global_new.ipv4_6_prefix,&global.ipv4_6_prefix)) {
*errstr=strdup("Cannot reload config file: the specified ipv4_6_prefix has changed.\n"
"Try restarting pdnsd instead.");
goto cleanup_return;
}
#endif
if(strcmp(global_new.run_as,global.run_as)) {
*errstr=strdup("Cannot reload config file: the specified run_as id has changed.\n"
"Try restarting pdnsd instead.");
goto cleanup_return;
}
if(global_new.daemon!=global.daemon) {
*errstr=strdup("Cannot reload config file: the daemon option has changed.\n"
"Try restarting pdnsd instead.");
goto cleanup_return;
}
if(global_new.debug!=global.debug) {
*errstr=strdup("Cannot reload config file: the debug option has changed.\n"
"Try restarting pdnsd instead.");
goto cleanup_return;
}
if(global_new.stat_pipe!=global.stat_pipe) {
*errstr=strdup("Cannot reload config file: the status_ctl option has changed.\n"
"Try restarting pdnsd instead.");
goto cleanup_return;
}
if(global_new.notcp!=global.notcp) {
*errstr=strdup("Cannot reload config file: the tcp_server option has changed.\n"
"Try restarting pdnsd instead.");
goto cleanup_return;
}
if(global_new.strict_suid!=global.strict_suid) {
*errstr=strdup("Cannot reload config file: the strict_setuid option has changed.\n"
"Try restarting pdnsd instead.");
goto cleanup_return;
}
if(global_new.ctl_perms!=global.ctl_perms) {
*errstr=strdup("Cannot reload config file: the specified ctl_perms has changed.\n"
"Try restarting pdnsd instead.");
goto cleanup_return;
}
if(ping_isocket==-1
#ifdef ENABLE_IPV6
&& ping6_isocket==-1
#endif
) {
int i,n=DA_NEL(servers_new);
for (i=0;i<n;++i) {
if (DA_INDEX(servers_new,i).uptest==C_PING) {
if(asprintf(errstr,"Cannot reload config file: the ping socket is not initialized"
" and the new config contains uptest=ping in server section %i.\n"
"Try restarting pdnsd instead.",i)<0)
*errstr=NULL;
goto cleanup_return;
}
}
}
/* we need exclusive access to the server data to make the changes */
/* Wait at most 60 seconds to obtain a lock. */
if(!exclusive_lock_server_data(60)) {
*errstr=strdup("Cannot reload config file: Timed out while waiting for access to config data.");
goto cleanup_return;
}
free(global_new.cache_dir); global_new.cache_dir=global.cache_dir;
free(global_new.pidfile); global_new.pidfile=global.pidfile;
free(global_new.scheme_file); global_new.scheme_file=global.scheme_file;
free_zones(global.deleg_only_zones);
global=global_new;
free_server_data(servers);
servers=servers_new;
/* schedule a retest to check which servers are up,
and free the lock. */
exclusive_unlock_server_data(1);
return 1;
}
cleanup_return:
free(global_new.cache_dir);
free(global_new.pidfile);
free(global_new.scheme_file);
free_zones(global_new.deleg_only_zones);
free_server_data(servers_new);
return 0;
}
void free_zone(void *ptr)
{
free(*((unsigned char **)ptr));
}
static void free_zones(zone_array za)
{
int i,n=DA_NEL(za);
for(i=0;i<n;++i)
free(DA_INDEX(za,i));
da_free(za);
}
void free_slist_domain(void *ptr)
{
free(((slist_t *)ptr)->domain);
}
void free_slist_array(slist_array sla)
{
int j,m=DA_NEL(sla);
for(j=0;j<m;++j)
free(DA_INDEX(sla,j).domain);
da_free(sla);
}
void free_servparm(servparm_t *serv)
{
free(serv->uptest_cmd);
free(serv->query_test_name);
free(serv->label);
da_free(serv->atup_a);
free_slist_array(serv->alist);
da_free(serv->reject_a4);
#if ALLOW_LOCAL_AAAA
da_free(serv->reject_a6);
#endif
}
static void free_server_data(servparm_array sa)
{
int i,n=DA_NEL(sa);
for(i=0;i<n;++i)
free_servparm(&DA_INDEX(sa,i));
da_free(sa);
}
/* Report the current configuration to the file descriptor f (for the status fifo, see status.c) */
int report_conf_stat(int f)
{
int i,n,retval=0;
fsprintf_or_return(f,"\nConfiguration:\n==============\nGlobal:\n-------\n");
fsprintf_or_return(f,"\tCache size: %li kB\n",global.perm_cache);
fsprintf_or_return(f,"\tServer directory: %s\n",global.cache_dir);
fsprintf_or_return(f,"\tScheme file (for Linux pcmcia support): %s\n",global.scheme_file);
fsprintf_or_return(f,"\tServer port: %i\n",global.port);
{
char buf[ADDRSTR_MAXLEN];
fsprintf_or_return(f,"\tServer IP (%s=any available one): %s\n", SEL_IPVER("0.0.0.0","::"),
pdnsd_a2str(&global.a,buf,ADDRSTR_MAXLEN));
if(!is_inaddr_any(&global.out_a)) {
fsprintf_or_return(f,"\tIP bound to interface used for querying remote servers: %s\n",
pdnsd_a2str(&global.out_a,buf,ADDRSTR_MAXLEN));
}
}
#ifdef ENABLE_IPV6
if(!run_ipv4) {
char buf[ADDRSTR_MAXLEN];
fsprintf_or_return(f,"\tIPv4 to IPv6 prefix: %s\n",inet_ntop(AF_INET6,&global.ipv4_6_prefix,buf,ADDRSTR_MAXLEN)?:"?.?.?.?");
}
#endif
fsprintf_or_return(f,"\tIgnore cache when link is down: %s\n",global.lndown_kluge?"on":"off");
fsprintf_or_return(f,"\tMaximum ttl: %li\n",(long)global.max_ttl);
fsprintf_or_return(f,"\tMinimum ttl: %li\n",(long)global.min_ttl);
fsprintf_or_return(f,"\tNegative ttl: %li\n",(long)global.neg_ttl);
fsprintf_or_return(f,"\tNegative RRS policy: %s\n",const_name(global.neg_rrs_pol));
fsprintf_or_return(f,"\tNegative domain policy: %s\n",const_name(global.neg_domain_pol));
fsprintf_or_return(f,"\tRun as: %s\n",global.run_as);
fsprintf_or_return(f,"\tStrict run as: %s\n",global.strict_suid?"on":"off");
fsprintf_or_return(f,"\tUse NSS: %s\n",global.use_nss?"on":"off");
fsprintf_or_return(f,"\tParanoid mode (cache pollution prevention): %s\n",global.paranoid?"on":"off");
fsprintf_or_return(f,"\tControl socket permissions (mode): %o\n",global.ctl_perms);
fsprintf_or_return(f,"\tMaximum parallel queries served: %i\n",global.proc_limit);
fsprintf_or_return(f,"\tMaximum queries queued for serving: %i\n",global.procq_limit);
fsprintf_or_return(f,"\tGlobal timeout setting: %li\n",(long)global.timeout);
fsprintf_or_return(f,"\tParallel queries increment: %i\n",global.par_queries);
fsprintf_or_return(f,"\tRandomize records in answer: %s\n",global.rnd_recs?"on":"off");
fsprintf_or_return(f,"\tQuery method: %s\n",const_name(global.query_method));
{
int query_port_start=global.query_port_start;
if(query_port_start==-1) {
fsprintf_or_return(f,"\tQuery port start: (let kernel choose)\n");
}
else {
fsprintf_or_return(f,"\tQuery port start: %i\n",query_port_start);
fsprintf_or_return(f,"\tQuery port end: %i\n",global.query_port_end);
}
}
#ifndef NO_TCP_SERVER
fsprintf_or_return(f,"\tTCP server thread: %s\n",global.notcp?"off":"on");
if(!global.notcp)
{fsprintf_or_return(f,"\tTCP query timeout: %li\n",(long)global.tcp_qtimeout);}
#endif
fsprintf_or_return(f,"\tMaximum udp buffer size: %i\n",global.udpbufsize);
lock_server_data();
{
int rv=fsprintf(f,"\tDelegation-only zones: ");
if(rv<0) {retval=rv; goto unlock_return;}
}
if(global.deleg_only_zones==NULL) {
int rv=fsprintf(f,"(none)\n");
if(rv<0) {retval=rv; goto unlock_return;}
}
else {
int rv;
n=DA_NEL(global.deleg_only_zones);
for(i=0;i<n;++i) {
unsigned char buf[DNSNAMEBUFSIZE];
rv=fsprintf(f,i==0?"%s":", %s",
rhn2str(DA_INDEX(global.deleg_only_zones,i),buf,sizeof(buf)));
if(rv<0) {retval=rv; goto unlock_return;}
}
rv=fsprintf(f,"\n");
if(rv<0) {retval=rv; goto unlock_return;}
}
n=DA_NEL(servers);
for(i=0;i<n;++i) {
int rv=report_server_stat(f,i);
if(rv<0) {retval=rv; goto unlock_return;}
}
unlock_return:
unlock_server_data();
return retval;
}
#if ALLOW_LOCAL_AAAA
#define serv_has_rejectlist(s) ((s)->reject_a4!=NULL || (s)->reject_a6!=NULL)
#else
#define serv_has_rejectlist(s) ((s)->reject_a4!=NULL)
#endif
/* Report the current status of server i to the file descriptor f.
Call with locks applied.
*/
static int report_server_stat(int f,int i)
{
servparm_t *st=&DA_INDEX(servers,i);
int j,m;
fsprintf_or_return(f,"Server %i:\n------\n",i);
fsprintf_or_return(f,"\tlabel: %s\n",st->label?st->label:"(none)");
m=DA_NEL(st->atup_a);
if(st->rootserver>1 && m)
fsprintf_or_return(f,"\tThe following name servers will be used for discovery of rootservers only:\n");
for(j=0;j<m;j++) {
atup_t *at=&DA_INDEX(st->atup_a,j);
{char buf[ADDRSTR_MAXLEN];
fsprintf_or_return(f,"\tip: %s\n",pdnsd_a2str(PDNSD_A2_TO_A(&at->a),buf,ADDRSTR_MAXLEN));}
fsprintf_or_return(f,"\tserver assumed available: %s\n",at->is_up?"yes":"no");
}
fsprintf_or_return(f,"\tport: %hu\n",st->port);
fsprintf_or_return(f,"\tuptest: %s\n",const_name(st->uptest));
fsprintf_or_return(f,"\ttimeout: %li\n",(long)st->timeout);
if(st->interval>0) {
fsprintf_or_return(f,"\tuptest interval: %li\n",(long)st->interval);
} else {
fsprintf_or_return(f,"\tuptest interval: %s\n",
st->interval==-1?"onquery":
st->interval==-2?"ontimeout":
"(never retest)");
}
fsprintf_or_return(f,"\tping timeout: %li\n",(long)st->ping_timeout);
{char buf[ADDRSTR_MAXLEN];
fsprintf_or_return(f,"\tping ip: %s\n",is_inaddr_any(&st->ping_a)?"(using server ip)":pdnsd_a2str(&st->ping_a,buf,ADDRSTR_MAXLEN));}
if(st->interface[0]) {
fsprintf_or_return(f,"\tinterface: %s\n",st->interface);
}
if(st->device[0]) {
fsprintf_or_return(f,"\tdevice (for special Linux ppp device support): %s\n",st->device);
}
if(st->uptest_cmd) {
fsprintf_or_return(f,"\tuptest command: %s\n",st->uptest_cmd);
fsprintf_or_return(f,"\tuptest user: %s\n",st->uptest_usr[0]?st->uptest_usr:"(process owner)");
}
if(st->query_test_name) {
unsigned char nmbuf[DNSNAMEBUFSIZE];
fsprintf_or_return(f,"\tname used in query uptest: %s\n",
rhn2str(st->query_test_name,nmbuf,sizeof(nmbuf)));
}
if (st->scheme[0]) {
fsprintf_or_return(f,"\tscheme: %s\n", st->scheme);
}
fsprintf_or_return(f,"\tforce cache purging: %s\n",st->purge_cache?"on":"off");
fsprintf_or_return(f,"\tserver is cached: %s\n",st->nocache?"off":"on");
fsprintf_or_return(f,"\tlean query: %s\n",st->lean_query?"on":"off");
fsprintf_or_return(f,"\tUse EDNS in outgoing queries: %s\n",st->edns_query?"on":"off");
fsprintf_or_return(f,"\tUse only proxy?: %s\n",st->is_proxy?"on":"off");
fsprintf_or_return(f,"\tAssumed root server: %s\n",st->rootserver?(st->rootserver==1?"yes":"discover"):"no");
fsprintf_or_return(f,"\tRandomize server query order: %s\n",st->rand_servers?"yes":"no");
fsprintf_or_return(f,"\tDefault policy: %s\n",const_name(st->policy));
fsprintf_or_return(f,"\tPolicies:%s\n", st->alist?"":" (none)");
for (j=0;j<DA_NEL(st->alist);++j) {
slist_t *sl=&DA_INDEX(st->alist,j);
unsigned char buf[DNSNAMEBUFSIZE];
fsprintf_or_return(f,"\t\t%s: %s%s\n",
sl->rule==C_INCLUDED?"include":"exclude",
sl->exact?"":".",
rhn2str(sl->domain,buf,sizeof(buf)));
}
if(serv_has_rejectlist(st)) {
fsprintf_or_return(f,"\tAddresses which should be rejected in replies:\n");
m=DA_NEL(st->reject_a4);
for (j=0;j<m;++j) {
addr4maskpair_t *am=&DA_INDEX(st->reject_a4,j);
char abuf[ADDRSTR_MAXLEN],mbuf[ADDRSTR_MAXLEN];
fsprintf_or_return(f,"\t\t%s/%s\n",inet_ntop(AF_INET,&am->a,abuf,sizeof(abuf)),
inet_ntop(AF_INET,&am->mask,mbuf,sizeof(mbuf)));
}
#if ALLOW_LOCAL_AAAA
m=DA_NEL(st->reject_a6);
for (j=0;j<m;++j) {
addr6maskpair_t *am=&DA_INDEX(st->reject_a6,j);
char abuf[INET6_ADDRSTRLEN],mbuf[INET6_ADDRSTRLEN];
fsprintf_or_return(f,"\t\t%s/%s\n",inet_ntop(AF_INET6,&am->a,abuf,sizeof(abuf)),
inet_ntop(AF_INET6,&am->mask,mbuf,sizeof(mbuf)));
}
#endif
fsprintf_or_return(f,"\tReject policy: %s\n",const_name(st->rejectpolicy));
fsprintf_or_return(f,"\tReject recursively: %s\n",st->rejectrecursively?"yes":"no");
}
return 0;
}

190
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/* conff.h - Definitions for configuration management.
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2002, 2003, 2005, 2006, 2007, 2008, 2009, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef CONFF_H
#define CONFF_H
/* XXX should use the system defined ones. */
/* #define MAXPATH 1024 */
/* #define MAXIFNAME 31 */
#include <config.h>
#include <stdio.h>
#include <pthread.h>
#include <sys/socket.h>
#include <net/if.h>
#include "ipvers.h"
#include "list.h"
/* From main.c */
#if DEBUG>0
extern short int debug_p;
#else
#define debug_p 0
#endif
extern short int stat_pipe;
extern pthread_t main_thrid;
extern uid_t init_uid;
extern char *conf_file;
/* ----------- */
typedef DYNAMIC_ARRAY(pdnsd_a) *addr_array;
typedef DYNAMIC_ARRAY(pdnsd_a2) *addr2_array;
typedef struct {
time_t i_ts;
char is_up;
pdnsd_a2 a;
} atup_t;
typedef DYNAMIC_ARRAY(atup_t) *atup_array;
typedef struct {
unsigned char *domain;
short exact;
short rule;
} slist_t;
typedef DYNAMIC_ARRAY(slist_t) *slist_array;
typedef struct {
struct in_addr a,mask;
} addr4maskpair_t;
typedef DYNAMIC_ARRAY(addr4maskpair_t) *a4_array;
#if ALLOW_LOCAL_AAAA
typedef struct {
struct in6_addr a,mask;
} addr6maskpair_t;
typedef DYNAMIC_ARRAY(addr6maskpair_t) *a6_array;
#endif
typedef struct {
unsigned short port;
short uptest;
time_t timeout;
time_t interval;
time_t ping_timeout;
char scheme[32];
char *uptest_cmd;
char uptest_usr[21];
char interface[IFNAMSIZ];
char device[IFNAMSIZ];
unsigned char *query_test_name;
char *label;
char purge_cache;
char nocache;
char lean_query;
char edns_query;
char is_proxy;
char rootserver;
char rand_servers;
char preset;
char rejectrecursively;
short rejectpolicy;
short policy;
slist_array alist;
atup_array atup_a;
a4_array reject_a4;
#if ALLOW_LOCAL_AAAA
a6_array reject_a6;
#endif
pdnsd_a ping_a;
} servparm_t;
typedef DYNAMIC_ARRAY(servparm_t) *servparm_array;
typedef unsigned char *zone_t;
typedef DYNAMIC_ARRAY(zone_t) *zone_array;
typedef struct {
long perm_cache;
char *cache_dir;
char *pidfile;
int port;
pdnsd_a a;
pdnsd_a out_a;
#ifdef ENABLE_IPV6
struct in6_addr ipv4_6_prefix;
#endif
time_t max_ttl;
time_t min_ttl;
time_t neg_ttl;
short neg_rrs_pol;
short neg_domain_pol;
short verbosity;
char run_as[21];
char daemon;
char debug;
char stat_pipe;
char notcp;
char strict_suid;
char use_nss;
char paranoid;
char lndown_kluge;
char onquery;
char rnd_recs;
int ctl_perms;
char *scheme_file;
int proc_limit;
int procq_limit;
time_t tcp_qtimeout;
time_t timeout;
int par_queries;
int query_method;
int query_port_start;
int query_port_end;
int udpbufsize;
zone_array deleg_only_zones;
} globparm_t;
typedef struct {
char
#ifdef ENABLE_IPV6
prefix,
#endif
pidfile,
verbosity,
pdnsduser,
daemon,
debug,
stat_pipe,
notcp,
query_method;
} cmdlineflags_t;
extern globparm_t global;
extern cmdlineflags_t cmdline;
extern servparm_t serv_presets;
extern servparm_array servers;
int read_config_file(const char *nm, globparm_t *global, servparm_array *servers, int includedepth, char **errstr);
int reload_config_file(const char *nm, char **errstr);
void free_zone(void *ptr);
void free_slist_domain(void *ptr);
void free_slist_array(slist_array sla);
void free_servparm(servparm_t *serv);
int report_conf_stat(int f);
#endif

133
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/* consts.c - Common config constants & handling
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2002, 2003, 2005, 2006, 2007, 2009 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <stdlib.h>
#include <string.h>
#include "consts.h"
#include "rr_types.h"
/* Order alphabetically!! */
static const namevalue_t const_dic[]={
{"auth", C_AUTH},
{"default", C_DEFAULT},
{"dev", C_DEV},
{"diald", C_DIALD},
{"discover", C_DISCOVER},
{"domain", C_DOMAIN},
{"excluded", C_EXCLUDED},
{"exec", C_EXEC},
{"fail", C_FAIL},
{"false", C_OFF},
{"fqdn_only", C_FQDN_ONLY},
{"if", C_IF},
{"included", C_INCLUDED},
{"negate", C_NEGATE},
{"no", C_OFF},
{"none", C_NONE},
{"off", C_OFF},
{"on", C_ON},
{"onquery", C_ONQUERY},
{"ontimeout", C_ONTIMEOUT},
{"ping", C_PING},
{"query", C_QUERY},
{"simple_only", C_SIMPLE_ONLY},
{"tcp_only", TCP_ONLY},
{"tcp_udp", TCP_UDP},
{"true", C_ON},
{"udp_only", UDP_ONLY},
{"udp_tcp", UDP_TCP},
{"yes", C_ON}
};
/* Added by Paul Rombouts */
static const char *const const_names[]={
"error",
"on",
"off",
"default",
"discover",
"none",
"if",
"exec",
"ping",
"query",
"onquery",
"ontimeout",
"udp_only",
"tcp_only",
"tcp_udp",
"udp_tcp",
"dev",
"diald",
"included",
"excluded",
"simple_only",
"fqdn_only",
"auth",
"domain",
"fail",
"negate"
};
/* compare two strings.
The first one is given as pointer to a char array of length len (which
should not contain any null chars),
the second one as a pointer to a null terminated char array.
*/
inline static int keyncmp(const char *key1, int len, const char *key2)
{
int cmp=strncmp(key1,key2,len);
if(cmp) return cmp;
return -(int)((unsigned char)(key2[len]));
}
int binsearch_keyword(const char *name, int len, const namevalue_t dic[], int range)
{
int i=0,j=range;
while(i<j) {
int k=(i+j)/2;
int cmp=keyncmp(name,len,dic[k].name);
if(cmp<0)
j=k;
else if(cmp>0)
i=k+1;
else
return dic[k].val;
}
return 0;
}
int lookup_const(const char *name, int len)
{
return binsearch_keyword(name,len,const_dic,sizeof(const_dic)/sizeof(namevalue_t));
}
/* Added by Paul Rombouts */
const char *const_name(int c)
{
return (c>=0 && c<sizeof(const_names)/sizeof(char *))? const_names[c] : "ILLEGAL!";
}

69
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/* consts.h - Common config constants & handling
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2002, 2003, 2005, 2006, 2007, 2009 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef CONSTS_H
#define CONSTS_H
#include <config.h>
#define C_RRTOFFS 64
enum {
C_ERR,
C_ON,
C_OFF,
C_DEFAULT,
C_DISCOVER,
C_NONE,
C_IF,
C_EXEC,
C_PING,
C_QUERY,
C_ONQUERY,
C_ONTIMEOUT,
UDP_ONLY,
TCP_ONLY,
TCP_UDP,
UDP_TCP,
C_DEV,
C_DIALD,
C_INCLUDED,
C_EXCLUDED,
C_SIMPLE_ONLY,
C_FQDN_ONLY,
C_AUTH,
C_DOMAIN,
C_FAIL,
C_NEGATE
};
typedef struct {
const char *name;
int val;
} namevalue_t;
int binsearch_keyword(const char *name, int len, const namevalue_t dic[], int range);
int lookup_const(const char *name, int len);
const char *const_name(int c); /* Added by Paul Rombouts */
#endif

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/* debug.c - Various debugging facilities
* Copyright (C) 2001 Thomas Moestl
*
* This file is part of the pdnsd package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <config.h>
#include <stdlib.h>
#include <string.h>
#include "helpers.h"
#include "error.h"
/*
* This is indeed very primitive (it does not track allocation failures
* and so on). It should be expanded some time.
*/
#ifdef ALLOC_DEBUG
void *DBGcalloc(size_t n, size_t sz, char *file, int line)
{
DEBUG_MSG("+ calloc, %s:%d\n", file, line);
return calloc(n, sz);
}
void *DBGmalloc(size_t sz, char *file, int line)
{
DEBUG_MSG("+ malloc, %s:%d\n", file, line);
return malloc(sz);
}
void *DBGrealloc(void *ptr, size_t sz, char *file, int line)
{
if (ptr == NULL && sz != 0)
DEBUG_MSG("+ realloc, %s:%d\n", file, line);
if (ptr != NULL && sz == 0)
DEBUG_MSG("- realloc(0), %s:%d\n", file, line);
return realloc(ptr, sz);
}
void DBGfree(void *ptr, char *file, int line)
{
DEBUG_MSG("- free, %s:%d\n", file, line);
free(ptr);
}
#endif

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/* debug.h - Various debugging facilities
* Copyright (C) 2001 Thomas Moestl
*
* This file is part of the pdnsd package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef DEBUG_H
#define DEBUG_H
/*
* A hand-rolled alloc debug factility, because most available libraries have
* problems with at least one thread implementation.
*/
#ifdef ALLOC_DEBUG
void *DBGcalloc(size_t n, size_t sz, char *file, int line);
void *DBGmalloc(size_t sz, char *file, int line);
void *DBGrealloc(void *ptr, size_t sz, char *file, int line);
void DBGfree(void *ptr, char *file, int line);
#define pdnsd_calloc(n,sz) DBGcalloc(n,sz,__FILE__,__LINE__)
#define pdnsd_malloc(sz) DBGmalloc(sz,__FILE__,__LINE__)
#define pdnsd_realloc(ptr,sz) DBGrealloc(ptr,sz,__FILE__,__LINE__)
#define pdnsd_free(ptr) DBGfree(ptr,__FILE__,__LINE__)
#else
#define pdnsd_calloc calloc
#define pdnsd_malloc malloc
#define pdnsd_realloc realloc
#define pdnsd_free free
#endif
#endif /* def DEBUG_H */

617
app/src/main/jni/pdnsd/src/dns.c Normal file
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@ -0,0 +1,617 @@
/* dns.c - Declarations for dns handling and generic dns functions
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "error.h"
#include "helpers.h"
#include "dns.h"
/* Decompress a name record, taking the whole message as msg, returning its results in tgt
* (which should be able hold at least DNSNAMEBUFSIZE chars),
* taking sz as the remaining msg size (it is returned decremented by the name length, ready for further use) and
* a source pointer (it is returned pointing to the location after the name). msgsize is the size of the whole message,
* len is the total name length.
* msg and msgsz are needed for decompression (see rfc1035). The returned data is decompressed, but still in the
* rr name form (length byte - string of that length, terminated by a 0 length byte).
*
* Returned is a dns return code, with one exception: RC_TRUNC, as defined in dns.h, indicates that the message is
* truncated at the name (which needs a special return code, as it might or might not be fatal).
*/
int decompress_name(unsigned char *msg, size_t msgsz, unsigned char **src, size_t *sz, unsigned char *tgt, unsigned int *len)
{
unsigned int lb,offs;
unsigned int hops=0,tpos=0;
unsigned char *lptr=*src;
size_t oldsz=*sz;
size_t newsz=oldsz;
if (newsz==0)
goto name_outside_data;
if (lptr-msg>=msgsz)
goto name_outside_msg;
for(;;) {
newsz--;
lb=*lptr++;
if(lb>0x3f) {
if (lb<0xc0) /* The two highest bits must be either 00 or 11 */
goto unsupported_lbl_bits;
if (newsz==0)
goto name_outside_data;
if (lptr-msg>=msgsz)
goto name_outside_msg;
newsz--;
offs=((lb&0x3f)<<8)|(*lptr);
if (offs>=msgsz)
goto offset_outside_msg;
lptr=msg+offs;
goto jumped;
}
tgt[tpos++]=lb;
if (lb==0)
break;
if (newsz<=lb)
goto name_outside_data;
if (lptr+lb-msg>=msgsz)
goto name_outside_msg;
if (tpos+lb>DNSNAMEBUFSIZE-1) /* terminating null byte has to follow */
goto name_buf_full;
newsz -= lb;
do {
/* if (!*lptr || *lptr=='.')
return RC_FORMAT; */
tgt[tpos++]=*lptr++;
} while(--lb);
}
goto return_OK;
jumped:
++hops;
for(;;) {
lb=*lptr++;
while(lb>0x3f) {
if (lb<0xc0) /* The two highest bits must be either 00 or 11 */
goto unsupported_lbl_bits;
if (lptr-msg>=msgsz)
goto name_outside_msg;
if (++hops>255)
goto too_many_hops;
offs=((lb&0x3f)<<8)|(*lptr);
if (offs>=msgsz)
goto offset_outside_msg;
lptr=msg+offs;
lb=*lptr++;
}
tgt[tpos++]=lb;
if (lb==0)
break;
if (lptr+lb-msg>=msgsz)
goto name_outside_msg;
if(tpos+lb>DNSNAMEBUFSIZE-1) /* terminating null byte has to follow */
goto name_buf_full;
do {
/* if (!*lptr || *lptr=='.')
return RC_FORMAT; */
tgt[tpos++]=*lptr++;
} while(--lb);
}
return_OK:
*src += oldsz-newsz;
*sz = newsz;
if(len) *len=tpos;
return RC_OK;
name_outside_data:
DEBUG_MSG("decompress_name: compressed name extends outside data field.\n");
return RC_TRUNC;
name_outside_msg:
DEBUG_MSG("decompress_name: compressed name extends outside message.\n");
return RC_FORMAT;
unsupported_lbl_bits:
DEBUG_MSG(lb==0x41?"decompress_name: Bit-string labels not supported.\n":
"decompress_name: unsupported label type.\n");
return RC_FORMAT;
offset_outside_msg:
DEBUG_MSG("decompress_name: offset points outside message.\n");
return RC_FORMAT;
name_buf_full:
DEBUG_MSG("decompress_name: decompressed name larger than %u bytes.\n", DNSNAMEBUFSIZE);
return RC_FORMAT;
too_many_hops:
DEBUG_MSG("decompress_name: too many offsets in compressed name.\n");
return RC_FORMAT;
}
#if 0
/* Compare two names (ordinary C-strings) back-to-forth and return the longest match.
The comparison is done at name granularity.
The return value is the length of the match in name elements.
*os (*od) is set to the offset in the domain name ms (md) of the match.
*/
int domain_name_match(const unsigned char *ms, const unsigned char *md, int *os, int *od)
{
int i,j,k=0,offs,offd;
offs=i=strlen(ms); offd=j=strlen(md);
if(i && ms[i-1]=='.') --offs;
if(j && md[j-1]=='.') --offd;
if(i==0 || (i==1 && *ms=='.') || j==0 || (j==1 && *md=='.'))
/* Special case: root domain */
;
else {
--i; if(ms[i]=='.') --i;
--j; if(md[j]=='.') --j;
while(tolower(ms[i]) == tolower(md[j])) {
if(ms[i]=='.') {
++k;
offs=i+1; offd=j+1;
}
if(i==0 || j==0) {
if((i==0 || ms[i-1]=='.') && (j==0 || md[j-1]=='.')) {
++k;
offs=i; offd=j;
}
break;
}
--i; --j;
}
}
if(os) *os=offs;
if(od) *od=offd;
return k;
}
#endif
/* Compare the names (in length byte-string notation) back-to-forth and return the longest match.
The comparison is done at name granularity.
The return value is the length of the match in name elements.
*os (*od) is set to the offset in the domain name ms (md) of the match.
*/
unsigned int domain_match(const unsigned char *ms, const unsigned char *md, unsigned int *os, unsigned int *od)
{
unsigned int i,j,k,n,ns=0,nd=0,offs,offd;
unsigned char lb,ls[128],ld[128];
/* first collect all length bytes */
i=0;
while((lb=ms[i])) {
PDNSD_ASSERT(ns<128, "domain_match: too many name segments");
ls[ns++]=lb;
i += ((unsigned)lb)+1;
}
j=0;
while((lb=md[j])) {
PDNSD_ASSERT(nd<128, "domain_match: too many name segments");
ld[nd++]=lb;
j += ((unsigned)lb)+1;
}
n=ns; if(n>nd) n=nd;
for(k=1; offs=i,offd=j,k<=n; ++k) {
lb=ls[ns-k];
if(lb!=ld[nd-k]) goto mismatch;
for(;lb;--lb)
if(tolower(ms[--i]) != tolower(md[--j])) goto mismatch;
--i; --j;
}
mismatch:
if(os) *os=offs;
if(od) *od=offd;
return k-1;
}
/* compress the domain name in in and put the result (of maximum length of rhnlen(in)) and
* fill cb with compression information for further strings.*cb may be NULL initially.
* offs is the offset the generated string will be placed in the packet.
* retval: 0 - error, otherwise length
* When done, just free() cb (if it is NULL, free will behave correctly).
* It is guaranteed (and insured by assertions) that the output is smaller or equal in
* size to the input.
*/
unsigned int compress_name(unsigned char *in, unsigned char *out, unsigned int offs, dlist *cb)
{
compel_t *ci;
unsigned int longest=0,lrem=0,coffs=0;
unsigned int rl=0;
unsigned ilen = rhnlen(in);
unsigned short add=1;
PDNSD_ASSERT(ilen<=DNSNAMEBUFSIZE, "compress_name: name too long");
/* part 1: compression */
for (ci=dlist_first(*cb); ci; ci=dlist_next(ci)) {
unsigned int rv,rem,to;
if ((rv=domain_match(in, ci->s, &rem,&to))>longest) {
/*
* This has some not obvious implications that should be noted: If a
* domain name as saved in the list has been compressed, we only can
* index the non-compressed part. We rely here that the first occurence
* can't be compressed. So we take the first occurence of a given length.
* This works perfectly, but watch it if you change something.
*/
unsigned int newoffs= ci->index + to;
/* Only use if the offset is not too large. */
if(newoffs<=0x3fff) {
longest=rv;
lrem=rem;
coffs= newoffs;
}
}
}
if (longest>0) {
PDNSD_ASSERT(lrem+2 <= ilen, "compress_name: length increased");
memcpy(out, in,lrem);
out[lrem]=0xc0|((coffs&0x3f00)>>8);
out[lrem+1]=coffs&0xff;
rl=lrem+2;
add= lrem!=0;
}
else {
memcpy(out,in,ilen);
rl=ilen;
}
/* part 2: addition to the cache structure */
if (add) {
if (!(*cb=dlist_grow(*cb,sizeof(compel_t)+ilen)))
return 0;
ci=dlist_last(*cb);
ci->index=offs;
memcpy(ci->s,in,ilen);
}
return rl;
}
/* Convert a numeric IP address into a domain name representation
(C string) suitable for PTR records.
buf is assumed to be at least DNSNAMEBUFSIZE bytes in size.
*/
int a2ptrstr(pdnsd_ca *a, int tp, unsigned char *buf)
{
if(tp==T_A) {
unsigned char *p=(unsigned char *)&a->ipv4.s_addr;
int n=snprintf(charp buf,DNSNAMEBUFSIZE,"%u.%u.%u.%u.in-addr.arpa.",p[3],p[2],p[1],p[0]);
if(n<0 || n>=DNSNAMEBUFSIZE)
return 0;
}
else
#if ALLOW_LOCAL_AAAA
if(tp==T_AAAA) {
unsigned char *p=(unsigned char *)&a->ipv6;
int i,offs=0;
for (i=15;i>=0;--i) {
unsigned char bt=p[i];
int n=snprintf(charp(buf+offs), DNSNAMEBUFSIZE-offs,"%x.%x.",bt&0xf,(bt>>4)&0xf);
if(n<0) return 0;
offs+=n;
if(offs>=DNSNAMEBUFSIZE) return 0;
}
if(!strncp(charp(buf+offs),"ip6.arpa.",DNSNAMEBUFSIZE-offs))
return 0;
}
else
#endif
return 0;
return 1;
}
/*
* Add records for a host as read from a hosts-style file.
* Returns 1 on success, 0 in an out of memory condition, and -1 when there was a problem with
* the record data.
*/
static int add_host(unsigned char *pn, unsigned char *rns, pdnsd_ca *a, int tp, int a_sz, time_t ttl, unsigned flags, int reverse)
{
dns_cent_t ce;
if (!init_cent(&ce, pn, 0, 0, flags DBG0))
return 0;
if (!add_cent_rr(&ce,tp,ttl,0,CF_LOCAL,a_sz,a DBG0))
goto free_cent_return0;
if (!add_cent_rr(&ce,T_NS,ttl,0,CF_LOCAL,rhnlen(rns),rns DBG0))
goto free_cent_return0;
add_cache(&ce);
free_cent(&ce DBG0);
if (reverse) {
unsigned char b2[DNSNAMEBUFSIZE],rhn[DNSNAMEBUFSIZE];
if(!a2ptrstr(a,tp,b2))
return -1;
if (!str2rhn(b2,rhn))
return -1;
if (!init_cent(&ce, rhn, 0, 0, flags DBG0))
return 0;
if (!add_cent_rr(&ce,T_PTR,ttl,0,CF_LOCAL,rhnlen(pn),pn DBG0))
goto free_cent_return0;
if (!add_cent_rr(&ce,T_NS,ttl,0,CF_LOCAL,rhnlen(rns),rns DBG0))
goto free_cent_return0;
add_cache(&ce);
free_cent(&ce DBG0);
}
return 1;
free_cent_return0:
free_cent(&ce DBG0);
return 0;
}
/*
* Read a file in /etc/hosts-format and add generate rrs for it.
* Errors are largely ignored so that we can skip entries we do not understand
* (but others possibly do).
*/
int read_hosts(const char *fn, unsigned char *rns, time_t ttl, unsigned flags, int aliases, char **errstr)
{
int rv=0;
FILE *f;
char *buf;
size_t buflen=256;
if (!(f=fopen(fn,"r"))) {
if(asprintf(errstr, "Failed to source %s: %s", fn, strerror(errno))<0) *errstr=NULL;
return 0;
}
buf=malloc(buflen);
if(!buf) {
*errstr=NULL;
goto fclose_return;
}
while(getline(&buf,&buflen,f)>=0) {
unsigned int len;
unsigned char *p,*pn,*pi;
unsigned char rhn[DNSNAMEBUFSIZE];
int tp,sz;
pdnsd_ca a;
p= ucharp strchr(buf,'#');
if(p) *p=0;
p= ucharp buf;
for(;;) {
if(!*p) goto nextline;
if(!isspace(*p)) break;
++p;
}
pi=p;
do {
if(!*++p) goto nextline;
} while(!isspace(*p));
*p=0;
do {
if(!*++p) goto nextline;
} while (isspace(*p));
pn=p;
do {
++p;
} while(*p && !isspace(*p));
len=p-pn;
if (parsestr2rhn(pn,len,rhn)!=NULL)
continue;
if (inet_aton(charp pi,&a.ipv4)) {
tp=T_A;
sz=sizeof(struct in_addr);
} else {
#if ALLOW_LOCAL_AAAA /* We don't read them otherwise, as the C library may not be able to to that.*/
if (inet_pton(AF_INET6,charp pi,&a.ipv6)>0) {
tp=T_AAAA;
sz=sizeof(struct in6_addr);
} else
#endif
continue;
}
{
int res=add_host(rhn, rns, &a, tp,sz, ttl, flags, 1);
if(res==0) {
*errstr= NULL;
goto cleanup_return;
}
else if(res<0)
continue;
}
if(aliases) {
for(;;) {
for(;;) {
if(!*p) goto nextline;
if(!isspace(*p)) break;
++p;
}
pn=p;
do {
++p;
} while(*p && !isspace(*p));
len=p-pn;
if (parsestr2rhn(pn,len,rhn)!=NULL)
break;
if (add_host(rhn, rns, &a, tp,sz, ttl, flags, 0) == 0) {
*errstr= NULL;
goto cleanup_return;
}
}
}
nextline:;
}
if (feof(f))
rv=1;
else if(asprintf(errstr, "Failed to source %s: %s", fn, strerror(errno))<0) *errstr=NULL;
cleanup_return:
free(buf);
fclose_return:
fclose(f);
return rv;
}
/* Get the name of an RR type given its value. */
const char *getrrtpname(int tp)
{
return tp>=T_MIN && tp<=T_MAX? rrnames[tp-T_MIN]: "[unknown]";
}
#if DEBUG>0
/*
* Const decoders for debugging display
*/
static const char *const c_names[C_NUM] = {"IN","CS","CH","HS"};
static const char *const qt_names[QT_NUM]={"IXFR","AXFR","MAILB","MAILA","*"};
const char *get_cname(int id)
{
if (id>=C_MIN && id<=C_MAX)
return c_names[id-C_MIN];
if (id==QC_ALL)
return "*";
return "[unknown]";
}
const char *get_tname(int id)
{
if (id>=T_MIN && id<=T_MAX)
return rrnames[id-T_MIN];
else if (id>=QT_MIN && id<=QT_MAX)
return qt_names[id-QT_MIN];
return "[unknown]";
}
#define NRC 17
static const char *const e_names[NRC]={
"no error",
"query format error",
"server failed",
"non-existent domain",
"not supported",
"query refused",
"name exists when it should not",
"RR set exists when it should not",
"RR set that should exist does not",
"server not authoritative for zone",
"name not contained in zone",
"11",
"12",
"13",
"14",
"15",
"bad OPT version"
};
const char *get_ename(int id)
{
if (id>=0 && id<NRC)
return e_names[id];
return "[unknown]";
}
/* Construct a human-readable string listing the flags that are set
in a dns header. buf must have a size of at least DNSFLAGSMAXSTRSIZE.
Used for debugging purposes only.
*/
char *dnsflags2str(dns_hdr_t *hdr, char *buf)
{
char *p= buf;
if (hdr->aa)
p=mempcpy(p, " AA", 3);
if (hdr->tc)
p=mempcpy(p, " TC", 3);
if (hdr->rd)
p=mempcpy(p, " RD", 3);
if (hdr->ra)
p=mempcpy(p, " RA", 3);
if (hdr->z)
p=mempcpy(p, " Z", 2);
if (hdr->ad)
p=mempcpy(p, " AD", 3);
if (hdr->cd)
p=mempcpy(p, " CD", 3);
*p=0;
return buf;
}
#endif
#if DEBUG>=9
/* Based on debug code contributed by Kiyo Kelvin Lee. */
void debug_dump_dns_msg(void *data, size_t len)
{
unsigned char *udata = (unsigned char *)data;
# define dmpchksz 16
char buf[dmpchksz*4+2];
size_t i, j, k, l;
DEBUG_MSG("pointer=%p len=%lu\n", udata, (unsigned long)len);
for (i = 0; i < len; i += dmpchksz) {
char *cp = buf;
k = l = i + dmpchksz;
if(k > len) k = len;
for (j = i; j < k; ++j) {
int n = sprintf(cp, "%02x ", udata[j]);
cp += n;
}
for (; j < l; ++j) {
*cp++ = ' ';
*cp++ = ' ';
*cp++ = ' ';
}
*cp++ = ' ';
for (j = i; j < k; ++j) {
*cp++ = isprint(udata[j]) ? udata[j] : '.';
}
PDNSD_ASSERT(cp < buf + sizeof(buf), "debug_dump_dns_msg: line buffer overflowed");
*cp = '\0';
DEBUG_MSG("%s\n", buf);
}
if(len >= sizeof(dns_hdr_t)) {
dns_hdr_t *hdr = (dns_hdr_t *)data;
DEBUG_MSG(
"id=%04x qr=%x opcode=%x aa=%x tc=%x rd=%x "
"ra=%x z=%x ad=%x cd=%x rcode=%x\n",
ntohs(hdr->id), hdr->qr, hdr->opcode, hdr->aa, hdr->tc, hdr->rd,
hdr->ra, hdr->z, hdr->ad, hdr->cd, hdr->rcode);
DEBUG_MSG(
"qdcount=%04x ancount=%04x nscount=%04x arcount=%04x\n",
ntohs(hdr->qdcount), ntohs(hdr->ancount), ntohs(hdr->nscount), ntohs(hdr->arcount));
}
}
#endif

309
app/src/main/jni/pdnsd/src/dns.h Normal file
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@ -0,0 +1,309 @@
/* dns.h - Declarations for dns handling and generic dns functions
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2002, 2003, 2004, 2005, 2009, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef DNS_H
#define DNS_H
#include <config.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <net/if.h>
#include <sys/types.h>
#include <inttypes.h>
#include "rr_types.h"
#include "list.h"
#include "ipvers.h"
#if (TARGET==TARGET_BSD)
# if !defined(__BIG_ENDIAN)
# if defined(BIG_ENDIAN)
# define __BIG_ENDIAN BIG_ENDIAN
# elif defined(_BIG_ENDIAN)
# define __BIG_ENDIAN _BIG_ENDIAN
# endif
# endif
# if !defined(__LITTLE_ENDIAN)
# if defined(LITTLE_ENDIAN)
# define __LITTLE_ENDIAN LITTLE_ENDIAN
# elif defined(_LITTLE_ENDIAN)
# define __LITTLE_ENDIAN _LITTLE_ENDIAN
# endif
# endif
# if !defined(__BYTE_ORDER)
# if defined(BYTE_ORDER)
# define __BYTE_ORDER BYTE_ORDER
# elif defined(_BYTE_ORDER)
# define __BYTE_ORDER _BYTE_ORDER
# endif
# endif
#endif
/* Deal with byte orders */
#ifndef __BYTE_ORDER
# if defined(__LITTLE_ENDIAN) && defined(__BIG_ENDIAN)
# error Fuzzy endianness system! Both __LITTLE_ENDIAN and __BIG_ENDIAN have been defined!
# endif
# if !defined(__LITTLE_ENDIAN) && !defined(__BIG_ENDIAN)
# error Strange Endianness-less system! Neither __LITTLE_ENDIAN nor __BIG_ENDIAN has been defined!
# endif
# if defined(__LITTLE_ENDIAN)
# define __BYTE_ORDER __LITTLE_ENDIAN
# elif defined(__BIG_ENDIAN)
# define __BYTE_ORDER __BIG_ENDIAN
# endif
#endif
/* special rr type codes for queries */
#define QT_MIN 251
#define QT_IXFR 251
#define QT_AXFR 252
#define QT_MAILB 253
#define QT_MAILA 254
#define QT_ALL 255
#define QT_MAX 255
#define QT_NUM 5
/* rr classes */
#define C_MIN 1
#define C_IN 1
#define C_CS 2
#define C_CH 3
#define C_HS 4
#define C_MAX 4
#define C_NUM 4
/* special classes for queries */
#define QC_ALL 255
/* status codes */
#define RC_OK 0
#define RC_FORMAT 1
#define RC_SERVFAIL 2
#define RC_NAMEERR 3
#define RC_NOTSUPP 4
#define RC_REFUSED 5
#define RC_BADVERS 16
/*
* special internal retvals
*/
#define RC_NOTCACHED 0xfffa
#define RC_CACHED 0xfffb
#define RC_STALE 0xfffc
#define RC_TCPREFUSED 0xfffd
#define RC_TRUNC 0xfffe
#define RC_FATALERR 0xffff
/* query/response */
#define QR_QUERY 0
#define QR_RESP 1
/*opcodes */
#define OP_QUERY 0
#define OP_IQUERY 1
#define OP_STATUS 2
#if 0
typedef struct {
/* the name is the first field. It has variable length, so it can't be put in the struct */
uint16_t type;
uint16_t class;
uint32_t ttl;
uint16_t rdlength;
/* rdata follows */
} __attribute__((packed)) rr_hdr_t;
#define sizeof_rr_hdr_t (sizeof rr_hdr_t)
#else
/* We will not actually use the rr_hdr_t type, only its size:
sizeof(rr_hdr_t) = 2 + 2 + 4 + 2 */
#define sizeof_rr_hdr_t 10
#endif
#define sizeof_opt_pseudo_rr (1+sizeof_rr_hdr_t)
#if 0
typedef struct {
/* The server name and maintainer mailbox are the first two fields. It has variable length, */
/* so they can't be put in the struct */
uint32_t serial;
uint32_t refresh;
uint32_t retry;
uint32_t expire;
uint32_t minimum;
} __attribute__((packed)) soa_r_t;
typedef struct {
/* char qname[];*/
uint16_t qtype;
uint16_t qclass;
} __attribute__((packed)) std_query_t;
#endif
typedef struct {
uint16_t id;
#if __BYTE_ORDER == __LITTLE_ENDIAN
unsigned int rd:1;
unsigned int tc:1;
unsigned int aa:1;
unsigned int opcode:4;
unsigned int qr:1;
unsigned int rcode:4;
unsigned int cd:1;
unsigned int ad:1;
unsigned int z :1;
unsigned int ra:1;
#elif __BYTE_ORDER == __BIG_ENDIAN
unsigned int qr:1;
unsigned int opcode:4;
unsigned int aa:1;
unsigned int tc:1;
unsigned int rd:1;
unsigned int ra:1;
unsigned int z :1;
unsigned int ad:1;
unsigned int cd:1;
unsigned int rcode:4;
#else
# error "Please define __BYTE_ORDER to be __LITTLE_ENDIAN or __BIG_ENDIAN"
#endif
uint16_t qdcount;
uint16_t ancount;
uint16_t nscount;
uint16_t arcount;
} __attribute__((packed)) dns_hdr_t;
/* A structure that can also be used for DNS messages over TCP. */
typedef struct {
#ifndef NO_TCP_QUERIES
uint16_t len;
#endif
dns_hdr_t hdr;
} __attribute__((packed)) dns_msg_t;
#ifdef NO_TCP_QUERIES
# define dnsmsghdroffset 0
#else
# define dnsmsghdroffset 2
#endif
/* Structure for storing EDNS (Extension mechanisms for DNS) information. */
typedef struct {
unsigned short udpsize;
unsigned short rcode;
unsigned short version;
unsigned char do_flg;
} edns_info_t;
/* Macros to retrieve or store integer data that is not necessarily aligned.
Also takes care of network to host byte order.
The pointer cp is advanced and should be of type void* or char*.
These are actually adapted versions of the NS_GET16 and NS_GET32
macros in the arpa/nameser.h include file in the BIND 9 source.
*/
#define GETINT16(s,cp) do { \
register uint16_t t_s; \
register const unsigned char *t_cp = (const unsigned char *)(cp); \
t_s = (uint16_t)*t_cp++ << 8; \
t_s |= (uint16_t)*t_cp++; \
(s) = t_s; \
(cp) = (void *)t_cp; \
} while (0)
#define GETINT32(l,cp) do { \
register uint32_t t_l; \
register const unsigned char *t_cp = (const unsigned char *)(cp); \
t_l = (uint32_t)*t_cp++ << 24; \
t_l |= (uint32_t)*t_cp++ << 16; \
t_l |= (uint32_t)*t_cp++ << 8; \
t_l |= (uint32_t)*t_cp++; \
(l) = t_l; \
(cp) = (void *)t_cp; \
} while (0)
#define PUTINT16(s,cp) do { \
register uint16_t t_s = (uint16_t)(s); \
register unsigned char *t_cp = (unsigned char *)(cp); \
*t_cp++ = t_s >> 8; \
*t_cp++ = t_s; \
(cp) = (void *)t_cp; \
} while (0)
#define PUTINT32(l,cp) do { \
register uint32_t t_l = (uint32_t)(l); \
register unsigned char *t_cp = (unsigned char *)(cp); \
*t_cp++ = t_l >> 24; \
*t_cp++ = t_l >> 16; \
*t_cp++ = t_l >> 8; \
*t_cp++ = t_l; \
(cp) = (void *)t_cp; \
} while (0)
/* Size (number of bytes) of buffers used to hold domain names. */
#define DNSNAMEBUFSIZE 256
/* Recursion depth. */
#define MAX_HOPS 20
/*
* Types for compression buffers.
*/
typedef struct {
unsigned int index;
unsigned char s[0];
} compel_t;
int decompress_name(unsigned char *msg, size_t msgsz, unsigned char **src, size_t *sz, unsigned char *tgt, unsigned int *len);
/* int domain_name_match(const unsigned char *ms, const unsigned char *md, int *os, int *od); */
unsigned int domain_match(const unsigned char *ms, const unsigned char *md, unsigned int *os, unsigned int *od);
unsigned int compress_name(unsigned char *in, unsigned char *out, unsigned int offs, dlist *cb);
int a2ptrstr(pdnsd_ca *a, int tp, unsigned char *buf);
int read_hosts(const char *fn, unsigned char *rns, time_t ttl, unsigned flags, int aliases, char **errstr);
const char *getrrtpname(int tp);
#if DEBUG>0
const char *get_cname(int id);
const char *get_tname(int id);
const char *get_ename(int id);
#define DNSFLAGSMAXSTRSIZE (7*3+1)
char *dnsflags2str(dns_hdr_t *hdr, char *buf);
#endif
#if DEBUG>=9
void debug_dump_dns_msg(void *data, size_t len);
#define DEBUG_DUMP_DNS_MSG(d,l) {if(debug_p && global.verbosity>=9) debug_dump_dns_msg(d,l);}
#else
#define DEBUG_DUMP_DNS_MSG(d,l)
#endif
#endif

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/* dns_answer.h - Receive and process icoming dns queries.
Copyright (C) 2000 Thomas Moestl
Copyright (C) 2005 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef DNS_ANSWER_H
#define DNS_ANSWER_H
#include <config.h>
/* --- from main.c */
extern pthread_t main_thrid,servstat_thrid,statsock_thrid,tcps_thrid,udps_thrid;
extern volatile int tcp_socket;
extern volatile int udp_socket;
/* --- */
int init_udp_socket(void);
int init_tcp_socket(void);
void start_dns_servers(void);
int report_thread_stat(int f);
#endif

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/* dns_query.h - Execute outgoing dns queries and write entries to cache
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2002, 2003, 2004, 2006, 2009, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef DNS_QUERY_H
#define DNS_QUERY_H
#include "cache.h"
/* Default UDP buffer size (when EDNS is not used). */
#define UDP_BUFSIZE 512
typedef struct qhintnode_s qhintnode_t;
/* --- parallel query */
int r_dns_cached_resolve(unsigned char *name, int thint, dns_cent_t **cachedp,
int hops, qhintnode_t *qhlist, time_t queryts,
unsigned char *c_soa);
#define dns_cached_resolve(name,thint,cachedp,hops,queryts,c_soa) \
r_dns_cached_resolve(name,thint,cachedp,hops,NULL,queryts,c_soa)
addr2_array dns_rootserver_resolv(atup_array atup_a, int port, char edns_query, time_t timeout);
int query_uptest(pdnsd_a *addr, int port, const unsigned char *name, time_t timeout, int rep);
/* --- from dns_answer.c */
int add_opt_pseudo_rr(dns_msg_t **ans, size_t *sz, size_t *allocsz,
unsigned short udpsize, unsigned short rcode,
unsigned short ednsver, unsigned short Zflags);
size_t remove_opt_pseudo_rr(dns_msg_t *ans, size_t sz);
#endif

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/* error.c - Error handling
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2003, 2004, 2005, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <sys/types.h>
#include <stdio.h>
#include <stdarg.h>
#include <syslog.h>
#include <pthread.h>
#include <signal.h>
#include <string.h>
#include "error.h"
#include "helpers.h"
#include "conff.h"
pthread_mutex_t loglock = PTHREAD_MUTEX_INITIALIZER;
volatile short int use_log_lock=0;
/*
* Initialize a mutex for io-locking in order not to produce gibberish on
* multiple simultaneous errors.
*/
/* This is now defined as an inline function in error.h */
#if 0
void init_log_lock(void)
{
use_log_lock=1;
}
#endif
/* We crashed? Ooops... */
void crash_msg(char *msg)
{
log_error("%s", msg);
log_error("pdnsd probably crashed due to a bug. Please consider sending a bug");
log_error("report to p.a.rombouts@home.nl or tmoestl@gmx.net");
}
/* Log a warning, error or info message.
* If we are a daemon, use the syslog. s is a format string like in printf,
* the optional following arguments are the arguments like in printf */
void log_message(int prior, const char *s, ...)
{
int gotlock=0;
va_list va;
FILE *f;
if (use_log_lock) {
gotlock=softlock_mutex(&loglock);
/* If we failed to get the lock and the type of the
message is "info" or less important, then don't bother. */
if(!gotlock && prior>=LOG_INFO)
return;
}
if (global.daemon) {
openlog("pdnsd",LOG_PID,LOG_DAEMON);
va_start(va,s);
vsyslog(prior,s,va);
va_end(va);
closelog();
}
else {
f=stderr;
#if DEBUG > 0
goto printtofile;
}
if(debug_p) {
f=dbg_file;
printtofile:
#endif
{
char ts[sizeof "* 12/31 23:59:59| "];
time_t tt = time(NULL);
struct tm tm;
if(!localtime_r(&tt, &tm) || strftime(ts, sizeof(ts), "* %m/%d %T| ", &tm) <=0)
ts[0]=0;
fprintf(f,"%spdnsd: %s: ", ts,
prior<=LOG_CRIT?"critical":
prior==LOG_ERR?"error":
prior==LOG_WARNING?"warning":
"info");
}
va_start(va,s);
vfprintf(f,s,va);
va_end(va);
{
const char *p=strchr(s,0);
if(!p || p==s || *(p-1)!='\n')
fputc('\n',f);
}
}
if (gotlock)
pthread_mutex_unlock(&loglock);
}
#if DEBUG > 0
/* XXX: The timestamp generation makes this a little heavy-weight */
void debug_msg(int c, const char *fmt, ...)
{
va_list va;
if (!c) {
char ts[sizeof "12/31 23:59:59"];
time_t tt = time(NULL);
struct tm tm;
unsigned *id;
if(localtime_r(&tt, &tm) && strftime(ts, sizeof(ts), "%m/%d %T", &tm) > 0) {
if((id = (unsigned *)pthread_getspecific(thrid_key)))
fprintf(dbg_file,"%u %s| ", *id, ts);
else
fprintf(dbg_file,"- %s| ", ts);
}
}
va_start(va,fmt);
vfprintf(dbg_file,fmt,va);
va_end(va);
fflush(dbg_file);
}
#endif /* DEBUG */

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/* error.h - Error handling
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2003, 2004, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef ERROR_H
#define ERROR_H
#include <config.h>
#include <time.h>
#include <pthread.h>
#include <stdio.h>
#include <signal.h>
#include <syslog.h>
#include "thread.h"
#include "helpers.h"
#include "pdnsd_assert.h"
/* --- from error.c */
extern volatile short int use_log_lock;
/* --- */
void crash_msg(char *msg);
inline static void init_log_lock(void) __attribute__((always_inline));
inline static void init_log_lock(void)
{
use_log_lock=1;
}
void log_message(int prior,const char *s, ...) printfunc(2, 3);
#if !defined(CPP_C99_VARIADIC_MACROS)
/* GNU C Macro Varargs style. */
#define log_error(args...) log_message(LOG_ERR,args)
#define log_warn(args...) log_message(LOG_WARNING,args)
#define log_info(level,args...) {if((level)<=global.verbosity) log_message(LOG_INFO,args);}
#else
/* ANSI C99 style. */
#define log_error(...) log_message(LOG_ERR,__VA_ARGS__)
#define log_warn(...) log_message(LOG_WARNING,__VA_ARGS__)
#define log_info(level,...) {if((level)<=global.verbosity) log_message(LOG_INFO,__VA_ARGS__);}
#endif
/* Following are some ugly macros for debug messages that
* should inhibit any code generation when DEBUG is not defined.
* Of course, those messages could be done in a function, but I
* want to save the overhead when DEBUG is not defined.
* debug_p needs to be defined (by including conff.h), or you
* will get strange errors.
* A macro call expands to a complete statement, so a semicolon after
* the macro call is redundant.
* The arguments are normal printfs, so you know how to use the args
*/
#if DEBUG>0
void debug_msg(int c, const char *fmt, ...) printfunc(2, 3);
/* from main.c */
extern FILE *dbg_file;
#endif
#if !defined(CPP_C99_VARIADIC_MACROS)
/* GNU C Macro Varargs style. */
# if DEBUG > 0
# define DEBUG_MSG(args...) {if (debug_p) debug_msg(0,args);}
# define DEBUG_MSGC(args...) {if (debug_p) debug_msg(1,args);}
# define DEBUG_PDNSDA_MSG(args...) {char _debugsockabuf[ADDRSTR_MAXLEN]; DEBUG_MSG(args);}
# define PDNSDA2STR(a) pdnsd_a2str(a,_debugsockabuf,sizeof(_debugsockabuf))
# define DEBUG_RHN_MSG(args...) {unsigned char _debugstrbuf[DNSNAMEBUFSIZE]; DEBUG_MSG(args);}
# define RHN2STR(a) rhn2str(a,_debugstrbuf,sizeof(_debugstrbuf))
# else
# define DEBUG_MSG(args...)
# define DEBUG_MSGC(args...)
# define DEBUG_PDNSDA_MSG(args...)
# define DEBUG_RHN_MSG(args...)
# endif /* DEBUG > 0 */
#else
/* ANSI C99 style. */
# if DEBUG > 0
/*
* XXX: The ANSI and GCC variadic macros should be merged as far as possible, but that
* might make things even more messy...
*/
# define DEBUG_MSG(...) {if (debug_p) debug_msg(0,__VA_ARGS__);}
# define DEBUG_MSGC(...) {if (debug_p) debug_msg(1,__VA_ARGS__);}
# define DEBUG_PDNSDA_MSG(...) {char _debugsockabuf[ADDRSTR_MAXLEN]; DEBUG_MSG(__VA_ARGS__);}
# define PDNSDA2STR(a) pdnsd_a2str(a,_debugsockabuf,ADDRSTR_MAXLEN)
# define DEBUG_RHN_MSG(...) {unsigned char _debugstrbuf[DNSNAMEBUFSIZE]; DEBUG_MSG(__VA_ARGS__);}
# define RHN2STR(a) rhn2str(a,_debugstrbuf,sizeof(_debugstrbuf))
# else
# define DEBUG_MSG(...)
# define DEBUG_MSGC(...)
# define DEBUG_PDNSDA_MSG(...)
# define DEBUG_RHN_MSG(...)
# endif /* DEBUG > 0 */
#endif
#endif

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/*
* Copyright (c) 1982, 1986, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
* $FreeBSD: src/sys/netinet/ip_icmp.h,v 1.20 2003/03/21 15:28:10 mdodd Exp $
*/
#ifndef _NETINET_IP_ICMP_H_
#define _NETINET_IP_ICMP_H_
/*
* Interface Control Message Protocol Definitions.
* Per RFC 792, September 1981.
*/
/*
* Internal of an ICMP Router Advertisement
*/
struct icmp_ra_addr {
u_int32_t ira_addr;
u_int32_t ira_preference;
};
/*
* Structure of an icmp header.
*/
struct icmp {
u_char icmp_type; /* type of message, see below */
u_char icmp_code; /* type sub code */
u_short icmp_cksum; /* ones complement cksum of struct */
union {
u_char ih_pptr; /* ICMP_PARAMPROB */
struct in_addr ih_gwaddr; /* ICMP_REDIRECT */
struct ih_idseq {
n_short icd_id;
n_short icd_seq;
} ih_idseq;
int ih_void;
/* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */
struct ih_pmtu {
n_short ipm_void;
n_short ipm_nextmtu;
} ih_pmtu;
struct ih_rtradv {
u_char irt_num_addrs;
u_char irt_wpa;
u_int16_t irt_lifetime;
} ih_rtradv;
} icmp_hun;
#define icmp_pptr icmp_hun.ih_pptr
#define icmp_gwaddr icmp_hun.ih_gwaddr
#define icmp_id icmp_hun.ih_idseq.icd_id
#define icmp_seq icmp_hun.ih_idseq.icd_seq
#define icmp_void icmp_hun.ih_void
#define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void
#define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu
#define icmp_num_addrs icmp_hun.ih_rtradv.irt_num_addrs
#define icmp_wpa icmp_hun.ih_rtradv.irt_wpa
#define icmp_lifetime icmp_hun.ih_rtradv.irt_lifetime
union {
struct id_ts { /* ICMP Timestamp */
n_time its_otime; /* Originate */
n_time its_rtime; /* Receive */
n_time its_ttime; /* Transmit */
} id_ts;
struct id_ip {
struct ip idi_ip;
/* options and then 64 bits of data */
} id_ip;
struct icmp_ra_addr id_radv;
u_int32_t id_mask;
char id_data[1];
} icmp_dun;
#define icmp_otime icmp_dun.id_ts.its_otime
#define icmp_rtime icmp_dun.id_ts.its_rtime
#define icmp_ttime icmp_dun.id_ts.its_ttime
#define icmp_ip icmp_dun.id_ip.idi_ip
#define icmp_radv icmp_dun.id_radv
#define icmp_mask icmp_dun.id_mask
#define icmp_data icmp_dun.id_data
};
/*
* Lower bounds on packet lengths for various types.
* For the error advice packets must first insure that the
* packet is large enough to contain the returned ip header.
* Only then can we do the check to see if 64 bits of packet
* data have been returned, since we need to check the returned
* ip header length.
*/
#define ICMP_MINLEN 8 /* abs minimum */
#define ICMP_TSLEN (8 + 3 * sizeof (n_time)) /* timestamp */
#define ICMP_MASKLEN 12 /* address mask */
#define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8) /* min */
#define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8)
/* N.B.: must separately check that ip_hl >= 5 */
/*
* Definition of type and code field values.
*/
#define ICMP_ECHOREPLY 0 /* echo reply */
#define ICMP_UNREACH 3 /* dest unreachable, codes: */
#define ICMP_UNREACH_NET 0 /* bad net */
#define ICMP_UNREACH_HOST 1 /* bad host */
#define ICMP_UNREACH_PROTOCOL 2 /* bad protocol */
#define ICMP_UNREACH_PORT 3 /* bad port */
#define ICMP_UNREACH_NEEDFRAG 4 /* IP_DF caused drop */
#define ICMP_UNREACH_SRCFAIL 5 /* src route failed */
#define ICMP_UNREACH_NET_UNKNOWN 6 /* unknown net */
#define ICMP_UNREACH_HOST_UNKNOWN 7 /* unknown host */
#define ICMP_UNREACH_ISOLATED 8 /* src host isolated */
#define ICMP_UNREACH_NET_PROHIB 9 /* prohibited access */
#define ICMP_UNREACH_HOST_PROHIB 10 /* ditto */
#define ICMP_UNREACH_TOSNET 11 /* bad tos for net */
#define ICMP_UNREACH_TOSHOST 12 /* bad tos for host */
#define ICMP_UNREACH_FILTER_PROHIB 13 /* admin prohib */
#define ICMP_UNREACH_HOST_PRECEDENCE 14 /* host prec vio. */
#define ICMP_UNREACH_PRECEDENCE_CUTOFF 15 /* prec cutoff */
#define ICMP_SOURCEQUENCH 4 /* packet lost, slow down */
#define ICMP_REDIRECT 5 /* shorter route, codes: */
#define ICMP_REDIRECT_NET 0 /* for network */
#define ICMP_REDIRECT_HOST 1 /* for host */
#define ICMP_REDIRECT_TOSNET 2 /* for tos and net */
#define ICMP_REDIRECT_TOSHOST 3 /* for tos and host */
#define ICMP_ECHO 8 /* echo service */
#define ICMP_ROUTERADVERT 9 /* router advertisement */
#define ICMP_ROUTERSOLICIT 10 /* router solicitation */
#define ICMP_TIMXCEED 11 /* time exceeded, code: */
#define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */
#define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */
#define ICMP_PARAMPROB 12 /* ip header bad */
#define ICMP_PARAMPROB_ERRATPTR 0 /* error at param ptr */
#define ICMP_PARAMPROB_OPTABSENT 1 /* req. opt. absent */
#define ICMP_PARAMPROB_LENGTH 2 /* bad length */
#define ICMP_TSTAMP 13 /* timestamp request */
#define ICMP_TSTAMPREPLY 14 /* timestamp reply */
#define ICMP_IREQ 15 /* information request */
#define ICMP_IREQREPLY 16 /* information reply */
#define ICMP_MASKREQ 17 /* address mask request */
#define ICMP_MASKREPLY 18 /* address mask reply */
#define ICMP_MAXTYPE 18
#define ICMP_INFOTYPE(type) \
((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \
(type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \
(type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \
(type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \
(type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY)
#ifdef _KERNEL
void icmp_error(struct mbuf *, int, int, n_long, struct ifnet *);
void icmp_input(struct mbuf *, int);
#endif
#endif

322
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/* hash.c - Manage hashes for cached dns records
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2003, 2005 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "hash.h"
#include "cache.h"
#include "error.h"
#include "helpers.h"
#include "consts.h"
/* This is not a perfect hash, but I hope it holds. It is designed for 1024 hash
* buckets, and hashes strings with case-insensitivity.
* It is position-aware in a limited way.
* It is exactly seen a two-way hash: because I do not want to exaggerate
* the hash buckets (i do have 1024), but I hash strings and string-comparisons
* are expensive, I save another 32 bit hash in each hash element that is checked
* before the string. The 32 bit hash is also used to order the entries in a hash chain.
* I hope not to have all too much collision concentration.
*
* The ip hash was removed. I don't think it concentrated the collisions too much.
* If it does, the hash algorithm needs to be changed, rather than using another
* hash.
* Some measurements seem to indicate that the hash algorithm is doing reasonable well.
*/
dns_hash_ent_t *hash_buckets[HASH_NUM_BUCKETS];
/*
* Hash a dns name (length-byte string format) to HASH_SZ bit.
* *rhash is set to a long int hash.
*/
static unsigned dns_hash(const unsigned char *str, unsigned long *rhash)
{
unsigned s,i,lb,c;
unsigned long r;
s=0; r=0;
i=0;
while((lb=str[i])) {
s+=lb<<(i%(HASH_SZ-5));
r+=((unsigned long)lb)<<(i%(8*sizeof(unsigned long)-7));
++i;
do {
c=toupper(str[i]);
s+=c<<(i%(HASH_SZ-5));
r+=((unsigned long)c)<<(i%(8*sizeof(unsigned long)-7));
++i;
} while(--lb);
}
s=(s&HASH_BITMASK)+((s&(~HASH_BITMASK))>>HASH_SZ);
s=(s&HASH_BITMASK)+((s&(~HASH_BITMASK))>>HASH_SZ);
s &= HASH_BITMASK;
#ifdef DEBUG_HASH
{
unsigned char buf[DNSNAMEBUFSIZE];
printf("Diagnostic: hashes for %s: %03x,%04lx\n",rhn2str(str,buf,sizeof(buf)),s,r);
}
#endif
if(rhash) *rhash=r;
return s;
}
/*
* Initialize hash to hold a dns hash table
*/
/* This is now defined as an inline function in hash.h */
#if 0
void mk_dns_hash()
{
int i;
for(i=0;i<HASH_NUM_BUCKETS;i++)
hash_buckets[i]=NULL;
}
#endif
/*
Lookup in the hash table for key. If it is found, return the pointer to the cache entry.
If no entry is found, return 0.
If loc is not NULL, it will used to store information about the location within the hash table
This can be used to add an entry with add_dns_hash() or delete the entry with del_dns_hash_ent().
*/
dns_cent_t *dns_lookup(const unsigned char *key, dns_hash_loc_t *loc)
{
dns_cent_t *retval=NULL;
unsigned idx;
unsigned long rh;
dns_hash_ent_t **hep,*he;
idx = dns_hash(key,&rh);
hep = &hash_buckets[idx];
while ((he= *hep) && he->rhash<=rh) {
if (he->rhash==rh && rhnicmp(key,he->data->qname)) {
retval = he->data;
break;
}
hep = &he->next;
}
if(loc) {
loc->pos = hep;
loc->rhash = rh;
}
return retval;
}
/*
Add a cache entry to the hash table.
loc must contain the location where the the new entry should be inserted
(this location can be obtained with dns_lookup).
add_dns_hash returns 1 on success, or 0 if out of memory.
*/
int add_dns_hash(dns_cent_t *data, dns_hash_loc_t *loc)
{
dns_hash_ent_t *he = malloc(sizeof(dns_hash_ent_t));
if(!he)
return 0;
he->next = *(loc->pos);
he->rhash = loc->rhash;
he->data = data;
*(loc->pos) = he;
return 1;
}
/*
Delete the hash entry indentified by the location returned by dns_lookup().
*/
dns_cent_t *del_dns_hash_ent(dns_hash_loc_t *loc)
{
dns_hash_ent_t *he = *(loc->pos);
dns_cent_t *data;
*(loc->pos) = he->next;
data = he->data;
free(he);
return data;
}
/*
* Delete the first entry indexed by key from the hash. Returns the data field or NULL.
* Since two cents are not allowed to be for the same host name, there will be only one.
*/
dns_cent_t *del_dns_hash(const unsigned char *key)
{
unsigned idx;
unsigned long rh;
dns_hash_ent_t **hep,*he;
dns_cent_t *data;
idx = dns_hash(key,&rh);
hep = &hash_buckets[idx];
while ((he= *hep) && he->rhash<=rh) {
if (he->rhash==rh && rhnicmp(key,he->data->qname)) {
*hep = he->next;
data = he->data;
free(he);
return data;
}
hep = &he->next;
}
return NULL; /* not found */
}
/*
* Delete all entries in a hash bucket.
*/
void free_dns_hash_bucket(int i)
{
dns_hash_ent_t *he,*hen;
he=hash_buckets[i];
hash_buckets[i]=NULL;
while (he) {
hen=he->next;
del_cent(he->data);
free(he);
he=hen;
}
}
/*
* Delete all entries in a hash bucket whose names match those in
* an include/exclude list.
*/
void free_dns_hash_selected(int i, slist_array sla)
{
dns_hash_ent_t **hep,*he,*hen;
int j,m=DA_NEL(sla);
hep= &hash_buckets[i];
he= *hep;
while (he) {
unsigned char *name=he->data->qname;
for(j=0;j<m;++j) {
slist_t *sl=&DA_INDEX(sla,j);
unsigned int nrem,lrem;
domain_match(name,sl->domain,&nrem,&lrem);
if(!lrem && (!sl->exact || !nrem)) {
if(sl->rule==C_INCLUDED)
goto delete_entry;
else
break;
}
}
/* default policy is not to delete */
hep= &he->next;
he= *hep;
continue;
delete_entry:
*hep=hen=he->next;;
del_cent(he->data);
free(he);
he=hen;
}
}
/*
* Delete the whole hash table, freeing all memory
*/
void free_dns_hash()
{
int i;
dns_hash_ent_t *he,*hen;
for (i=0;i<HASH_NUM_BUCKETS;i++) {
he=hash_buckets[i];
hash_buckets[i]=NULL;
while (he) {
hen=he->next;
del_cent(he->data);
free(he);
he=hen;
}
}
}
/*
* The following functions are for iterating over the hash.
* fetch_first returns the data field of the first element (or NULL if there is none), and fills pos
* for subsequent calls of fetch_next.
* fetch_next returns the data field of the element after the element that was returned by the last
* call with the same position argument (or NULL if there is none)
*
* Note that these are designed so that you may actually delete the elements you retrieved from the hash.
*/
dns_cent_t *fetch_first(dns_hash_pos_t *pos)
{
int i;
for (i=0;i<HASH_NUM_BUCKETS;i++) {
dns_hash_ent_t *he=hash_buckets[i];
if (he) {
pos->bucket=i;
pos->ent=he->next;
return he->data;
}
}
return NULL;
}
dns_cent_t *fetch_next(dns_hash_pos_t *pos)
{
dns_hash_ent_t *he=pos->ent;
int i;
if (he) {
pos->ent=he->next;
return he->data;
}
for (i=pos->bucket+1;i<HASH_NUM_BUCKETS;i++) {
he=hash_buckets[i];
if (he) {
pos->bucket=i;
pos->ent=he->next;
return he->data;
}
}
return NULL;
}
#ifdef DEBUG_HASH
void dumphash()
{
if(debug_p) {
int i, j;
dns_hash_ent_t *he;
for (i=0; i<HASH_NUM_BUCKETS; i++) {
for (j=0, he=hash_buckets[i]; he; he=he->next, j++) ;
DEBUG_MSG("bucket %d: %d entries\n", i, j);
}
}
}
#endif

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/* hash.h - Manage hashes for cached dns records
Copyright (C) 2000 Thomas Moestl
Copyright (C) 2003, 2005 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef _HASH_H_
#define _HASH_H_
#include <config.h>
#include "cache.h"
typedef struct dns_hash_ent_s {
struct dns_hash_ent_s *next;
unsigned long rhash; /* this is a better hash */
dns_cent_t *data;
} dns_hash_ent_t;
/* Redefine this if you want another hash size. Should work ;-).
* The number of hash buckets is computed as power of two;
* so, e.g. HASH_SZ set to 10 yields 1024 hash rows (2^10 or 1<<10).
* Only powers of two are possible conveniently.
* HASH_SZ may not be bigger than 32 (if you set it even close to that value,
* you are nuts.) */
/* #define HASH_SZ 10 */ /* Now defined in config.h */
#define HASH_NUM_BUCKETS (1<<HASH_SZ)
#define HASH_BITMASK (HASH_NUM_BUCKETS-1)
extern dns_hash_ent_t *hash_buckets[];
/* A type for remembering the position in the hash table where a new entry can be inserted. */
typedef struct {
dns_hash_ent_t **pos; /* pointer to the location in the hash table */
unsigned long rhash; /* long hash */
} dns_hash_loc_t;
/* A type for position specification for fetch_first and fetch_next */
typedef struct {
int bucket; /* bucket chain we are in */
dns_hash_ent_t *ent; /* entry */
} dns_hash_pos_t;
inline static void mk_dns_hash() __attribute__((always_inline));
inline static void mk_dns_hash()
{
int i;
for(i=0;i<HASH_NUM_BUCKETS;i++)
hash_buckets[i]=NULL;
}
dns_cent_t *dns_lookup(const unsigned char *key, dns_hash_loc_t *loc);
int add_dns_hash(dns_cent_t *data, dns_hash_loc_t *loc);
dns_cent_t *del_dns_hash_ent(dns_hash_loc_t *loc);
dns_cent_t *del_dns_hash(const unsigned char *key);
void free_dns_hash_bucket(int i);
void free_dns_hash_selected(int i, slist_array sla);
void free_dns_hash();
dns_cent_t *fetch_first(dns_hash_pos_t *pos);
dns_cent_t *fetch_next(dns_hash_pos_t *pos);
#ifdef DEBUG_HASH
void dumphash();
#endif
#endif

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/* helpers.c - Various helper functions
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2002, 2003, 2005, 2006, 2008, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <sys/types.h>
#include <sys/time.h>
#include <signal.h>
#include <stdlib.h>
#include <stdarg.h>
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <pwd.h>
#include <grp.h>
#include <errno.h>
#include "ipvers.h"
#include "thread.h"
#include "error.h"
#include "helpers.h"
#include "cache.h"
#include "conff.h"
/*
* This is to exit pdnsd from any thread.
*/
void pdnsd_exit()
{
pthread_kill(main_thrid,SIGTERM);
pthread_exit(NULL);
}
/*
* Try to grab a mutex. If we can't, fail. This will loop until we get the
* mutex or fail. This is only used in debugging code or at exit, otherwise
* we might run into lock contention problems.
*/
int softlock_mutex(pthread_mutex_t *mutex)
{
unsigned int tr=0;
while(pthread_mutex_trylock(mutex)) {
if (++tr>=SOFTLOCK_MAXTRIES)
return 0;
usleep_r(10000);
}
return 1;
}
/*
* setuid() and setgid() for a specified user.
*/
int run_as(const char *user)
{
if (user[0]) {
#ifdef HAVE_GETPWNAM_R
struct passwd pwdbuf, *pwd;
size_t buflen;
int err;
for(buflen=128;; buflen*=2) {
char buf[buflen]; /* variable length array */
/* Note that we use getpwnam_r() instead of getpwnam(),
which returns its result in a statically allocated buffer and
cannot be considered thread safe.
Doesn't use NSS! */
err=getpwnam_r(user, &pwdbuf, buf, buflen, &pwd);
if(err==0 && pwd) {
/* setgid first, because we may not be allowed to do it anymore after setuid */
if (setgid(pwd->pw_gid)!=0) {
log_error("Could not change group id to that of run_as user '%s': %s",
user,strerror(errno));
return 0;
}
/* initgroups uses NSS, so we can disable it,
i.e. we might need DNS for LDAP lookups, which times out */
if (global.use_nss && (initgroups(user, pwd->pw_gid)!=0)) {
log_error("Could not initialize the group access list of run_as user '%s': %s",
user,strerror(errno));
return 0;
}
if (setuid(pwd->pw_uid)!=0) {
log_error("Could not change user id to that of run_as user '%s': %s",
user,strerror(errno));
return 0;
}
break;
}
else if(err!=ERANGE) {
if(err)
log_error("run_as user '%s' could not be found: %s",user,strerror(err));
else
log_error("run_as user '%s' could not be found.",user);
return 0;
}
else if(buflen>=16*1024) {
/* If getpwnam_r() seems defective, call it quits rather than
keep on allocating ever larger buffers until we crash. */
log_error("getpwnam_r() requires more than %u bytes of buffer space.",(unsigned)buflen);
return 0;
}
/* Else try again with larger buffer. */
}
#else
/* No getpwnam_r() :-( We'll use getpwnam() and hope for the best. */
struct passwd *pwd;
if (!(pwd=getpwnam(user))) {
log_error("run_as user %s could not be found.",user);
return 0;
}
/* setgid first, because we may not allowed to do it anymore after setuid */
if (setgid(pwd->pw_gid)!=0) {
log_error("Could not change group id to that of run_as user '%s': %s",
user,strerror(errno));
return 0;
}
/* initgroups uses NSS, so we can disable it,
i.e. we might need DNS for LDAP lookups, which times out */
if (global.use_nss && (initgroups(user, pwd->pw_gid)!=0)) {
log_error("Could not initialize the group access list of run_as user '%s': %s",
user,strerror(errno));
return 0;
}
if (setuid(pwd->pw_uid)!=0) {
log_error("Could not change user id to that of run_as user '%s': %s",
user,strerror(errno));
return 0;
}
#endif
}
return 1;
}
/*
* returns whether c is allowed in IN domain names
*/
#if 0
int isdchar (unsigned char c)
{
if ((c>='a' && c<='z') || (c>='A' && c<='Z') || (c>='0' && c<='9') || c=='-'
#ifdef UNDERSCORE
|| c=='_'
#endif
)
return 1;
return 0;
}
#endif
/*
* Convert a string given in dotted notation to the transport format (length byte prepended
* domain name parts, ended by a null length sequence)
* The memory areas referenced by str and rhn may not overlap.
* The buffer rhn points to is assumed to be at least DNSNAMEBUFSIZE bytes in size.
*
* Returns 1 if successful, otherwise 0.
*/
int str2rhn(const unsigned char *str, unsigned char *rhn)
{
unsigned int i,j;
if(*str=='.' && !*(str+1)) {
/* Special case: root domain */
rhn[0]=0;
return 1;
}
for(i=0;;) {
unsigned int jlim= i+63;
if(jlim>DNSNAMEBUFSIZE-2) jlim=DNSNAMEBUFSIZE-2; /* DNSNAMEBUFSIZE-2 because the termination 0 has to follow */
for(j=i; str[j] && str[j]!='.'; ++j) {
if(j>=jlim) return 0;
rhn[j+1]=str[j];
}
if(!str[j])
break;
if(j<=i)
return 0;
rhn[i]=(unsigned char)(j-i);
i = j+1;
}
rhn[i]=0;
if (j>i || i==0)
return 0;
return 1;
}
/*
parsestr2rhn is essentially the same as str2rhn, except that it doesn't look beyond
the first len chars in the input string. It also tolerates strings
not ending in a dot and returns a message in case of an error.
*/
const char *parsestr2rhn(const unsigned char *str, unsigned int len, unsigned char *rhn)
{
unsigned int i,j;
if(len>0 && *str=='.' && (len==1 || !*(str+1))) {
/* Special case: root domain */
rhn[0]=0;
return NULL;
}
i=0;
do {
unsigned int jlim= i+63;
if(jlim>DNSNAMEBUFSIZE-2) jlim=DNSNAMEBUFSIZE-2;
for(j=i; j<len && str[j] && str[j]!='.'; ++j) {
/* if(!isdchar(str[j]))
return "Illegal character in domain name"; */
if(j>=jlim)
return "Domain name element too long";
rhn[j+1]=str[j];
}
if(j<=i) {
if(j<len && str[j])
return "Empty name element in domain name";
else
break;
}
rhn[i]=(unsigned char)(j-i);
i = j+1;
} while(j<len && str[j]);
rhn[i]=0;
if(i==0)
return "Empty domain name not allowed";
return NULL;
}
/*
* Take a host name as used in the dns transfer protocol (a length byte,
* followed by the first part of the name, ..., followed by a 0 length byte),
* and return a string in the usual dotted notation. Length checking is done
* elsewhere (in decompress_name), this takes names from the cache which are
* validated. No more than "size" bytes will be written to the buffer str points to
* (but size must be positive).
* If the labels in rhn contains non-printable characters, these are represented
* in the result by a backslash followed three octal digits. Additionally some
* special characters are preceded by a backslash. Normally the result should
* fit within DNSNAMEBUFSIZE bytes, but if there are many non-printable characters, the
* receiving buffer may not be able to contain the full result. In that case the
* truncation in the result is indicated by series of trailing dots. This
* function is only used for diagnostic purposes, thus a truncated result should
* not be a very serious problem (and should only occur under pathological
* circumstances).
*/
const unsigned char *rhn2str(const unsigned char *rhn, unsigned char *str, unsigned int size)
{
unsigned int i,j,lb;
if(size==0) return NULL;
i=0; j=0;
lb=rhn[i++];
if (!lb) {
if(size>=2)
str[j++]='.';
}
else {
do {
for (;lb;--lb) {
unsigned char c;
if(j+2>=size)
goto overflow;
c=rhn[i++];
if(isgraph(c)) {
if(c=='.' || c=='\\' || c=='"') {
str[j++]='\\';
if(j+2>=size)
goto overflow;
}
str[j++]=c;
}
else {
unsigned int rem=size-1-j;
int n=snprintf(charp &str[j],rem,"\\%03o",c);
if(n<0 || n>=rem) {
str[j++]='.';
goto overflow;
}
j+=n;
}
}
str[j++]='.';
lb=rhn[i++];
} while(lb);
}
str[j]=0;
return str;
overflow:
j=size;
str[--j]=0;
if(j>0) {
str[--j]='.';
if(j>0) {
str[--j]='.';
if(j>0)
str[--j]='.';
}
}
return str;
}
/* Return the length of a domain name in transport format.
The definition has in fact been moved to helpers.h as an inline function.
Note added by Paul Rombouts:
Compared to the definition used by Thomas Moestl (strlen(rhn)+1), the following definition of rhnlen
may yield a different result in certain error situations (when a domain name segment contains null byte).
*/
#if 0
unsigned int rhnlen(const unsigned char *rhn)
{
unsigned int i=0,lb;
while((lb=rhn[i++]))
i+=lb;
return i;
}
#endif
/*
* Non-validating rhn copy (use with checked or generated data only).
* Returns number of characters copied. The buffer dst points to is assumed to be DNSNAMEBUFSIZE (or
* at any rate large enough) bytes in size.
* The answer assembly code uses this; it is guaranteed to not clobber anything
* after the name.
*/
unsigned int rhncpy(unsigned char *dst, const unsigned char *src)
{
unsigned int len = rhnlen(src);
PDNSD_ASSERT(len<=DNSNAMEBUFSIZE,"rhncpy: src too long!");
memcpy(dst,src,len>DNSNAMEBUFSIZE?DNSNAMEBUFSIZE:len);
return len;
}
/* Check whether a name is a normal wire-encoded domain name,
i.e. is not compressed, doesn't use extended labels and is not
too long.
*/
int isnormalencdomname(const unsigned char *rhn, unsigned maxlen)
{
unsigned int i,lb;
if(maxlen>DNSNAMEBUFSIZE)
maxlen=DNSNAMEBUFSIZE;
for(i=0;;) {
if(i>=maxlen) return 0;
lb=rhn[i++];
if(lb==0) break;
if(lb>0x3f) return 0;
i += lb;
}
return 1;
}
int str2pdnsd_a(const char *addr, pdnsd_a *a)
{
#ifdef ENABLE_IPV4
if (run_ipv4) {
return inet_aton(addr,&a->ipv4);
}
#endif
#ifdef ENABLE_IPV6
ELSE_IPV6 {
/* Try to map an IPv4 address to IPv6 */
struct in_addr a4;
if(inet_aton(addr,&a4)) {
a->ipv6=global.ipv4_6_prefix;
((uint32_t *)(&a->ipv6))[3]=a4.s_addr;
return 1;
}
return inet_pton(AF_INET6,addr,&a->ipv6)>0;
}
#endif
/* return 0; */
}
/* definition moved to helpers.h */
#if 0
int is_inaddr_any(pdnsd_a *a)
{
return SEL_IPVER( a->ipv4.s_addr==INADDR_ANY,
IN6_IS_ADDR_UNSPECIFIED(&a->ipv6) );
}
#endif
/*
* This is used for user output only, so it does not matter when an error occurs.
*/
const char *pdnsd_a2str(pdnsd_a *a, char *buf, int maxlen)
{
const char *res= SEL_IPVER( inet_ntop(AF_INET,&a->ipv4,buf,maxlen),
inet_ntop(AF_INET6,&a->ipv6,buf,maxlen) );
if (!res) {
log_error("inet_ntop: %s", strerror(errno));
return "?.?.?.?";
}
return res;
}
/* Appropriately set our random device */
#ifdef R_DEFAULT
# if (TARGET == TARGET_BSD) && !defined(__NetBSD__)
# define R_ARC4RANDOM 1
# else
# define R_RANDOM 1
# endif
#endif
#ifdef RANDOM_DEVICE
FILE *rand_file;
#endif
#ifdef R_RANDOM
void init_crandom()
{
struct timeval tv;
struct timezone tz;
gettimeofday(&tv,&tz);
srandom(tv.tv_sec^tv.tv_usec); /* not as guessable as time() */
}
#endif
/* initialize the PRNG */
int init_rng()
{
#ifdef RANDOM_DEVICE
if (!(rand_file=fopen(RANDOM_DEVICE,"r"))) {
log_error("Could not open %s.",RANDOM_DEVICE);
return 0;
}
#endif
#ifdef R_RANDOM
init_crandom();
#endif
return 1;
}
/* The following function is now actually defined as a macro in helpers.h */
#if 0
void free_rng()
{
#ifdef RANDOM_DEVICE
if (rand_file)
fclose(rand_file);
#endif
}
#endif
/* generate a (more or less) random number 16 bits long. */
unsigned short get_rand16()
{
#ifdef RANDOM_DEVICE
unsigned short rv;
if (rand_file) {
if (fread(&rv,sizeof(rv),1, rand_file)!=1) {
log_error("Error while reading from random device: %s", strerror(errno));
pdnsd_exit();
}
return rv&0xffff;
} else
return random()&0xffff;
#endif
#ifdef R_RANDOM
return random()&0xffff;
#endif
#ifdef R_ARC4RANDOM
return arc4random()&0xffff;
#endif
}
/* fsprintf does formatted output to a file descriptor.
The functionality is similar to fprintf, but note that fd
is of type int instead of FILE*.
This function has been rewritten by Paul Rombouts */
int fsprintf(int fd, const char *format, ...)
{
int n;
va_list va;
{
char buf[256];
va_start(va,format);
n=vsnprintf(buf,sizeof(buf),format,va);
va_end(va);
if(n<(int)sizeof(buf)) {
if(n>0) n=write_all(fd,buf,n);
return n;
}
}
/* retry with a right sized buffer, needs glibc 2.1 or higher to work */
{
unsigned bufsize=n+1;
char buf[bufsize];
va_start(va,format);
n=vsnprintf(buf,bufsize,format,va);
va_end(va);
if(n>0) n=write_all(fd,buf,n);
}
return n;
}
/* Convert data into a hexadecimal representation (for debugging purposes)..
The result is stored in the character array buf.
If buf is not large enough to hold the result, the
truncation is indicated by trailing dots.
*/
void hexdump(const void *data, int dlen, char *buf, int buflen)
{
const unsigned char *p=data;
int i,j=0;
for(i=0;i<dlen;++i) {
int rem=buflen-j;
int n=snprintf(buf+j, rem, i==0?"%02x":" %02x", p[i]);
if(n<0 || n>=rem) goto truncated;
j += n;
}
goto done;
truncated:
if(j>=6) {
j -= 3;
if(j+4>=buflen)
j -= 3;
buf[j++]=' ';
buf[j++]='.';
buf[j++]='.';
buf[j++]='.';
}
else {
int ndots=buflen-1;
if(ndots>3) ndots=3;
j=0;
while(j<ndots) buf[j++]='.';
}
done:
buf[j]=0;
}
/* Copy string "in" to "str" buffer, converting non-printable characters
to escape sequences.
Returns the length of the output string, or -1 if the result does not
fit in the output buffer.
*/
int escapestr(const char *in, int ilen, char *str, int size)
{
int i,j=0;
for(i=0;i<ilen;++i) {
unsigned char c;
if(j+1>=size)
return -1;
c=in[i];
if(!isprint(c)) {
int rem=size-j;
int n=snprintf(&str[j],rem,"\\%03o",c);
if(n<0 || n>=rem) {
return -1;
}
j+=n;
}
else {
if(c=='\\' || c=='"') {
str[j++]='\\';
if(j+1>=size)
return -1;
}
str[j++]=c;
}
}
str[j]=0;
return j;
}
/*
* This is not like strcmp, but will return 1 on match or 0 if the
* strings are different.
*/
/* definition moved to helpers.h as an inline function. */
#if 0
int stricomp(char *a, char *b)
{
int i;
if (strlen(a) != strlen(b))
return 0;
for (i=0;i<strlen(a);i++) {
if (tolower(a[i])!=tolower(b[i]))
return 0;
}
return 1;
}
#endif
/* Bah. I want strlcpy */
/* definition moved to helpers.h */
#if 0
int strncp(char *dst, char *src, int dstsz)
{
char o;
strncpy(dst,src,dstsz);
o=dst[dstsz-1];
dst[dstsz-1]='\0';
if (strlen(dst) >= dstsz-1 && o!='\0')
return 0;
return 1;
}
#endif
#ifndef HAVE_GETLINE
/* Note by Paul Rombouts: I know that getline is a GNU extension and is not really portable,
but the alternative standard functions have some real problems.
The following substitute does not have exactly the same semantics as the GNU getline,
but it should be good enough, as long as the stream doesn't contain any null chars.
This version is actually based on fgets_realloc() that I found in the WWWOFFLE source.
*/
#define BUFSIZE 256
int getline(char **lineptr, size_t *n, FILE *stream)
{
char *line=*lineptr;
size_t sz=*n,i;
if(!line || sz<BUFSIZE) {
sz=BUFSIZE;
line = realloc(line,sz);
if(!line) return -1;
*lineptr=line;
*n=sz;
}
for (i=0;;) {
char *lni;
if(!(lni=fgets(line+i,sz-i,stream))) {
if(i && feof(stream))
break;
else
return -1;
}
i += strlen(lni);
if(i<sz-1 || line[i-1]=='\n')
break;
sz += BUFSIZE;
line = realloc(line,sz);
if(!line) return -1;
*lineptr=line;
*n=sz;
}
return i;
}
#undef BUFSIZE
#endif
#ifndef HAVE_VASPRINTF
/* On systems where the macro va_copy is not available, hopefully simple assignment will work.
Otherwise, I don't see any portable way of defining vasprintf() (without using a completely
different algorithm).
*/
#ifndef va_copy
# ifdef __va_copy
# define va_copy __va_copy
# else
# warning "No va_copy or __va_copy macro found, trying simple assignment."
# define va_copy(dst,src) ((dst)=(src))
# endif
#endif
int vasprintf (char **lineptr, const char *format, va_list va)
{
int sz=128,n;
char *line=malloc(sz);
va_list vasave;
if(!line) return -1;
va_copy(vasave,va);
n=vsnprintf(line,sz,format,va);
if(n>=sz) {
/* retry with a right sized buffer, needs glibc 2.1 or higher to work */
sz=n+1;
{
char *tmp=realloc(line,sz);
if(tmp) {
line=tmp;
n=vsnprintf(line,sz,format,vasave);
}
else
n= -1;
}
}
va_end(vasave);
if(n>=0)
*lineptr=line;
else
free(line);
return n;
}
#endif
#ifndef HAVE_ASPRINTF
int asprintf (char **lineptr, const char *format, ...)
{
int n;
va_list va;
va_start(va,format);
n=vasprintf(lineptr,format,va);
va_end(va);
return n;
}
#endif
#ifndef HAVE_INET_NTOP
const char *inet_ntop(int af, const void *src, char *dst, size_t size)
{
const char *rc = NULL;
if (src != NULL && dst != NULL && size > 0) {
switch (af) {
case AF_INET:
{
const unsigned char *p=src;
int n = snprintf(dst, size, "%u.%u.%u.%u",
p[0],p[1],p[2],p[3]);
if (n >= 0 && n < size) rc = dst;
}
break;
#ifdef AF_INET6
case AF_INET6:
{
const unsigned char *p=src;
unsigned int i,offs=0;
for (i=0;i<16;i+=2) {
int n=snprintf(dst+offs, size-offs,i==0?"%x":":%x", ((unsigned)p[i]<<8)|p[i+1]);
if(n<0) return NULL;
offs+=n;
if(offs>=size) return NULL;
}
rc = dst;
}
break;
#endif
}
}
return rc;
}
#endif

319
app/src/main/jni/pdnsd/src/helpers.h Normal file
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/* helpers.h - Various helper functions
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2002, 2003, 2004, 2007, 2009, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef HELPERS_H
#define HELPERS_H
#include <config.h>
#include <pthread.h>
#include <unistd.h>
#include <string.h>
#include <ctype.h>
#include "cache.h"
#include "pdnsd_assert.h"
#define SOFTLOCK_MAXTRIES 1000
int run_as(const char *user);
void pdnsd_exit(void);
int softlock_mutex(pthread_mutex_t *mutex);
#if 0
inline static int isdchar (unsigned char c)
{
return ((c>='a' && c<='z') || (c>='A' && c<='Z') || (c>='0' && c<='9') || c=='-'
#ifdef UNDERSCORE
|| c=='_'
#endif
);
}
#endif
const unsigned char *rhn2str(const unsigned char *rhn, unsigned char *str, unsigned int size);
int str2rhn(const unsigned char *str, unsigned char *rhn);
const char *parsestr2rhn(const unsigned char *str, unsigned int len, unsigned char *rhn);
/* Note added by Paul Rombouts:
Compared to the definition used by Thomas Moestl (strlen(rhn)+1), the following definition of rhnlen
may yield a different result in certain error situations (when a domain name segment contains a null byte).
*/
inline static unsigned int rhnlen(const unsigned char *rhn)
__attribute__((always_inline));
inline static unsigned int rhnlen(const unsigned char *rhn)
{
unsigned int i=0,lb;
while((lb=rhn[i++]))
i+=lb;
return i;
}
/* Skip k segments in a name in length-byte string notation. */
inline static const unsigned char *skipsegs(const unsigned char *nm, unsigned k)
__attribute__((always_inline));
inline static const unsigned char *skipsegs(const unsigned char *nm, unsigned k)
{
unsigned lb;
for(;k && (lb= *nm); --k) {
nm += lb+1;
}
return nm;
}
/* Skip a name in length-byte string notation and return a pointer to the
position right after the terminating null byte.
*/
inline static unsigned char *skiprhn(unsigned char *rhn)
__attribute__((always_inline));
inline static unsigned char *skiprhn(unsigned char *rhn)
{
unsigned lb;
while((lb= *rhn++))
rhn += lb;
return rhn;
}
/* count the number of name segments of a name in length-byte string notation. */
inline static unsigned int rhnsegcnt(const unsigned char *rhn)
__attribute__((always_inline));
inline static unsigned int rhnsegcnt(const unsigned char *rhn)
{
unsigned int res=0,lb;
while((lb= *rhn)) {
++res;
rhn += lb+1;
}
return res;
}
unsigned int rhncpy(unsigned char *dst, const unsigned char *src);
int isnormalencdomname(const unsigned char *rhn, unsigned maxlen);
inline static int is_inaddr_any(pdnsd_a *a) __attribute__((always_inline));
inline static int is_inaddr_any(pdnsd_a *a)
{
return SEL_IPVER( a->ipv4.s_addr==INADDR_ANY,
IN6_IS_ADDR_UNSPECIFIED(&a->ipv6) );
}
inline static int same_inaddr(pdnsd_a *a, pdnsd_a *b)
__attribute__((always_inline));
inline static int same_inaddr(pdnsd_a *a, pdnsd_a *b)
{
return SEL_IPVER( a->ipv4.s_addr==b->ipv4.s_addr,
IN6_ARE_ADDR_EQUAL(&a->ipv6,&b->ipv6) );
}
/* Compare a pdnsd_a* with a pdnsd_a2*. */
inline static int same_inaddr2(pdnsd_a *a, pdnsd_a2 *b)
__attribute__((always_inline));
inline static int same_inaddr2(pdnsd_a *a, pdnsd_a2 *b)
{
return SEL_IPVER( a->ipv4.s_addr==b->ipv4.s_addr,
IN6_ARE_ADDR_EQUAL(&a->ipv6,&b->ipv6) && b->ipv4.s_addr==INADDR_ANY );
}
inline static int equiv_inaddr2(pdnsd_a *a, pdnsd_a2 *b)
__attribute__((always_inline));
inline static int equiv_inaddr2(pdnsd_a *a, pdnsd_a2 *b)
{
return SEL_IPVER( a->ipv4.s_addr==b->ipv4.s_addr,
IN6_ARE_ADDR_EQUAL(&a->ipv6,&b->ipv6) ||
(b->ipv4.s_addr!=INADDR_ANY && ADDR_EQUIV6_4(&a->ipv6,&b->ipv4)) );
}
int str2pdnsd_a(const char *addr, pdnsd_a *a);
const char *pdnsd_a2str(pdnsd_a *a, char *buf, int maxlen);
int init_rng(void);
#ifdef RANDOM_DEVICE
extern FILE *rand_file;
/* Because this is usually empty, it is now defined as a macro to save overhead.*/
#define free_rng() {if (rand_file) fclose(rand_file);}
#else
#define free_rng()
#endif
unsigned short get_rand16(void);
int fsprintf(int fd, const char *format, ...) printfunc(2, 3);
#if !defined(CPP_C99_VARIADIC_MACROS)
/* GNU C Macro Varargs style. */
# define fsprintf_or_return(args...) {int _retval; if((_retval=fsprintf(args))<0) return _retval;}
#else
/* ANSI C99 style variadic macro. */
# define fsprintf_or_return(...) {int _retval; if((_retval=fsprintf(__VA_ARGS__))<0) return _retval;}
#endif
/* Added by Paul Rombouts */
inline static ssize_t write_all(int fd,const void *data,size_t n)
__attribute__((always_inline));
inline static ssize_t write_all(int fd,const void *data,size_t n)
{
ssize_t written=0;
while(written<n) {
ssize_t m=write(fd,(const void*)(((const char*)data)+written),n-written);
if(m<0)
return m;
written+=m;
}
return written;
}
void hexdump(const void *data, int dlen, char *buf, int buflen);
int escapestr(const char *in, int ilen, char *str, int size);
#if 0
inline static int stricomp(const char *a, const char *b)
{
return !strcasecmp(a,b);
}
#endif
/* compare two names in length byte - string format
rhnicmp returns 1 if the names are the same (ignoring upper/lower case),
0 otherwise.
*/
inline static int rhnicmp(const unsigned char *a, const unsigned char *b)
__attribute__((always_inline));
inline static int rhnicmp(const unsigned char *a, const unsigned char *b)
{
unsigned int i=0;
unsigned char lb;
for(;;) {
lb=a[i];
if(lb!=b[i]) return 0;
if(!lb) break;
++i;
do {
if(tolower(a[i])!=tolower(b[i])) return 0;
++i;
} while(--lb);
}
return 1;
}
/* Bah. I want strlcpy. */
inline static int strncp(char *dst, const char *src, size_t dstsz)
__attribute__((always_inline));
inline static int strncp(char *dst, const char *src, size_t dstsz)
{
#ifdef HAVE_STRLCPY
return (strlcpy(dst,src,dstsz)<dstsz);
#else
#ifdef HAVE_STPNCPY
char *p=stpncpy(dst,src,dstsz);
if(p<dst+dstsz) return 1;
*(p-1)='\0';
return 0;
#else
strncpy(dst,src,dstsz);
if(strlen(src)<dstsz) return 1;
dst[dstsz-1]='\0';
return 0;
#endif
#endif
}
#ifndef HAVE_STRDUP
inline static char *strdup(const char *s)
__attribute__((always_inline));
inline static char *strdup(const char *s)
{
size_t sz=strlen(s)+1;
char *cp=malloc(sz);
if(cp)
memcpy(cp,s,sz);
return cp;
}
#endif
#ifndef HAVE_STRNDUP
/* This version may allocate a buffer that is unnecessarily large,
but I'm always going to use it with n<strlen(s)
*/
inline static char *strndup(const char *s, size_t n)
__attribute__((always_inline));
inline static char *strndup(const char *s, size_t n)
{
char *cp;
cp=malloc(n+1);
if(cp) {
memcpy(cp,s,n);
cp[n]='\0';
}
return cp;
}
#endif
#ifndef HAVE_STPCPY
inline static char *stpcpy (char *dest, const char *src)
__attribute__((always_inline));
inline static char *stpcpy (char *dest, const char *src)
{
register char *d = dest;
register const char *s = src;
while ((*d++ = *s++) != '\0');
return d - 1;
}
#endif
#ifndef HAVE_MEMPCPY
inline static void *mempcpy(void *dest, const void *src, size_t len)
__attribute__((always_inline));
inline static void *mempcpy(void *dest, const void *src, size_t len)
{
memcpy(dest,src,len);
return ((char *)dest)+len;
}
#endif
#ifndef HAVE_GETLINE
int getline(char **lineptr, size_t *n, FILE *stream);
#endif
#ifndef HAVE_ASPRINTF
int asprintf (char **lineptr, const char *format, ...);
#endif
#ifndef HAVE_VASPRINTF
#include <stdarg.h>
int vasprintf (char **lineptr, const char *format, va_list va);
#endif
#ifndef HAVE_INET_NTOP
const char *inet_ntop(int af, const void *src, char *dst, size_t size);
#endif
#define strlitlen(strlit) (sizeof(strlit)-1)
#endif /* HELPERS_H */

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app/src/main/jni/pdnsd/src/icmp.c Normal file
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/* icmp.c - Server response tests using ICMP echo requests
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2003, 2005, 2007, 2012 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
/*
* This should now work on both Linux and FreeBSD (and CYGWIN?). If anyone
* with experience in other Unix flavors wants to contribute platform-specific
* code, he is very welcome.
*/
#include <config.h>
#ifdef HAVE_SYS_POLL_H
#include <sys/poll.h>
#endif
#include <sys/time.h>
#include <stdlib.h>
#include <stddef.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include "ipvers.h"
#if (TARGET==TARGET_LINUX)
# include <netinet/ip.h>
# include <linux/types.h>
# include <linux/icmp.h>
#elif (TARGET==TARGET_BSD)
# include <netinet/in_systm.h>
# include <netinet/ip.h>
# include <netinet/ip_icmp.h>
#elif (TARGET==TARGET_CYGWIN)
# include <netinet/ip.h>
# include <netinet/in_systm.h>
# include <netinet/ip_icmp.h>
# include "freebsd_netinet_ip_icmp.h"
#else
# error Unsupported platform!
#endif
#ifdef ENABLE_IPV6
# include <netinet/ip6.h>
# include <netinet/icmp6.h>
#endif
#include <netdb.h>
#include "icmp.h"
#include "error.h"
#include "helpers.h"
#include "servers.h"
#define ICMP_MAX_ERRS 10
static volatile unsigned long icmp_errs=0; /* This is only here to minimize log output.
Since the consequences of a race is only
one log message more/less (out of
ICMP_MAX_ERRS), no lock is required. */
volatile int ping_isocket=-1;
#ifdef ENABLE_IPV6
volatile int ping6_isocket=-1;
#endif
/* different names, same thing... be careful, as these are macros... */
#if (TARGET==TARGET_LINUX)
# define ip_saddr saddr
# define ip_daddr daddr
# define ip_hl ihl
# define ip_p protocol
#else
# define icmphdr icmp
# define iphdr ip
# define ip_saddr ip_src.s_addr
# define ip_daddr ip_dst.s_addr
#endif
#if (TARGET==TARGET_LINUX)
# define icmp_type type
# define icmp_code code
# define icmp_cksum checksum
# define icmp_id un.echo.id
# define icmp_seq un.echo.sequence
#else
# define ICMP_DEST_UNREACH ICMP_UNREACH
# define ICMP_TIME_EXCEEDED ICMP_TIMXCEED
#endif
#define ICMP_BASEHDR_LEN 8
#define ICMP4_ECHO_LEN ICMP_BASEHDR_LEN
#if (TARGET==TARGET_LINUX) || (TARGET==TARGET_BSD) || (TARGET==TARGET_CYGWIN)
/*
* These are the ping implementations for Linux/FreeBSD in their IPv4/ICMPv4 and IPv6/ICMPv6 versions.
* I know they share some code, but I'd rather keep them separated in some parts, as some
* things might go in different directions there.
*/
/* Initialize the sockets for pinging */
void init_ping_socket()
{
if ((ping_isocket=socket(PF_INET, SOCK_RAW, IPPROTO_ICMP))==-1) {
log_warn("icmp ping: socket() failed: %s",strerror(errno));
}
#ifdef ENABLE_IPV6
if (!run_ipv4) {
/* Failure to initialize the IPv4 ping socket is not
necessarily a problem, as long as the IPv6 version works. */
if ((ping6_isocket=socket(PF_INET6, SOCK_RAW, IPPROTO_ICMPV6))==-1) {
log_warn("icmpv6 ping: socket() failed: %s",strerror(errno));
}
}
#endif
}
/* Takes a packet as send out and a received ICMP packet and looks whether the ICMP packet is
* an error reply on the sent-out one. packet is only the packet (without IP header).
* errmsg includes an IP header.
* to is the destination address of the original packet (the only thing that is actually
* compared of the IP header). The RFC says that we get at least 8 bytes of the offending packet.
* We do not compare more, as this is all we need.*/
static int icmp4_errcmp(char *packet, int plen, struct in_addr *to, char *errmsg, int elen, int errtype)
{
struct iphdr iph;
struct icmphdr icmph;
struct iphdr eiph;
char *data;
/* XXX: lots of memcpy to avoid unaligned accesses on alpha */
if (elen<sizeof(struct iphdr))
return 0;
memcpy(&iph,errmsg,sizeof(iph));
if (iph.ip_p!=IPPROTO_ICMP || elen<iph.ip_hl*4+ICMP_BASEHDR_LEN+sizeof(eiph))
return 0;
PDNSD_ASSERT(sizeof(icmph) >= ICMP_BASEHDR_LEN, "icmp4_errcmp: ICMP_BASEHDR_LEN botched");
memcpy(&icmph,errmsg+iph.ip_hl*4,ICMP_BASEHDR_LEN);
memcpy(&eiph,errmsg+iph.ip_hl*4+ICMP_BASEHDR_LEN,sizeof(eiph));
if (elen<iph.ip_hl*4+ICMP_BASEHDR_LEN+eiph.ip_hl*4+8)
return 0;
data=errmsg+iph.ip_hl*4+ICMP_BASEHDR_LEN+eiph.ip_hl*4;
return icmph.icmp_type==errtype && memcmp(&to->s_addr, &eiph.ip_daddr, sizeof(to->s_addr))==0 &&
memcmp(data, packet, plen<8?plen:8)==0;
}
/* IPv4/ICMPv4 ping. Called from ping (see below) */
static int ping4(struct in_addr addr, int timeout, int rep)
{
int i;
int isock;
#if (TARGET==TARGET_LINUX)
struct icmp_filter f;
#endif
unsigned short id=(unsigned short)get_rand16(); /* randomize a ping id */
isock=ping_isocket;
#if (TARGET==TARGET_LINUX)
/* Fancy ICMP filering -- only on Linux (as far is I know) */
/* In fact, there should be macros for treating icmp_filter, but I haven't found them in Linux 2.2.15.
* So, set it manually and unportable ;-) */
/* This filter lets ECHO_REPLY (0), DEST_UNREACH(3) and TIME_EXCEEDED(11) pass. */
/* !(0000 1000 0000 1001) = 0xff ff f7 f6 */
f.data=0xfffff7f6;
if (setsockopt(isock,SOL_RAW,ICMP_FILTER,&f,sizeof(f))==-1) {
if (++icmp_errs<=ICMP_MAX_ERRS) {
log_warn("icmp ping: setsockopt() failed: %s", strerror(errno));
}
return -1;
}
#endif
for (i=0;i<rep;i++) {
struct sockaddr_in from,to;
struct icmphdr icmpd;
unsigned long sum;
uint16_t *ptr;
long tm,tpassed;
int j;
icmpd.icmp_type=ICMP_ECHO;
icmpd.icmp_code=0;
icmpd.icmp_cksum=0;
icmpd.icmp_id=htons((uint16_t)id);
icmpd.icmp_seq=htons((uint16_t)i);
/* Checksumming - Algorithm taken from nmap. Thanks... */
ptr=(uint16_t *)&icmpd;
sum=0;
for (j=0;j<4;j++) {
sum+=*ptr++;
}
sum = (sum >> 16) + (sum & 0xffff);
sum += (sum >> 16);
icmpd.icmp_cksum=~sum;
memset(&to,0,sizeof(to));
to.sin_family=AF_INET;
to.sin_port=0;
to.sin_addr=addr;
SET_SOCKA_LEN4(to);
if (sendto(isock,&icmpd,ICMP4_ECHO_LEN,0,(struct sockaddr *)&to,sizeof(to))==-1) {
if (++icmp_errs<=ICMP_MAX_ERRS) {
log_warn("icmp ping: sendto() failed: %s.",strerror(errno));
}
return -1;
}
/* listen for reply. */
tm=time(NULL); tpassed=0;
do {
int psres;
#ifdef NO_POLL
fd_set fds,fdse;
struct timeval tv;
FD_ZERO(&fds);
PDNSD_ASSERT(isock<FD_SETSIZE,"socket file descriptor exceeds FD_SETSIZE.");
FD_SET(isock, &fds);
fdse=fds;
tv.tv_usec=0;
tv.tv_sec=timeout>tpassed?timeout-tpassed:0;
/* There is a possible race condition with the arrival of a signal here,
but it is so unlikely to be a problem in practice that the effort
to do this properly is not worth the trouble.
*/
if(is_interrupted_servstat_thread()) {
DEBUG_MSG("server status thread interrupted.\n");
return -1;
}
psres=select(isock+1,&fds,NULL,&fdse,&tv);
#else
struct pollfd pfd;
pfd.fd=isock;
pfd.events=POLLIN;
/* There is a possible race condition with the arrival of a signal here,
but it is so unlikely to be a problem in practice that the effort
to do this properly is not worth the trouble.
*/
if(is_interrupted_servstat_thread()) {
DEBUG_MSG("server status thread interrupted.\n");
return -1;
}
psres=poll(&pfd,1,timeout>tpassed?(timeout-tpassed)*1000:0);
#endif
if (psres<0) {
if(errno==EINTR && is_interrupted_servstat_thread()) {
DEBUG_MSG("poll/select interrupted in server status thread.\n");
}
else if (++icmp_errs<=ICMP_MAX_ERRS) {
log_warn("poll/select failed: %s",strerror(errno));
}
return -1;
}
if (psres==0) /* timed out */
break;
#ifdef NO_POLL
if (FD_ISSET(isock,&fds) || FD_ISSET(isock,&fdse))
#else
if (pfd.revents&(POLLIN|POLLERR))
#endif
{
char buf[1024];
socklen_t sl=sizeof(from);
int len;
if ((len=recvfrom(isock,&buf,sizeof(buf),0,(struct sockaddr *)&from,&sl))!=-1) {
if (len>sizeof(struct iphdr)) {
struct iphdr iph;
memcpy(&iph, buf, sizeof(iph));
if (len-iph.ip_hl*4>=ICMP_BASEHDR_LEN) {
struct icmphdr icmpp;
memcpy(&icmpp, ((uint32_t *)buf)+iph.ip_hl, sizeof(icmpp));
if (iph.ip_saddr==addr.s_addr && icmpp.icmp_type==ICMP_ECHOREPLY &&
ntohs(icmpp.icmp_id)==id && ntohs(icmpp.icmp_seq)<=i) {
return (i-ntohs(icmpp.icmp_seq))*timeout+(time(NULL)-tm); /* return the number of ticks */
} else {
/* No regular echo reply. Maybe an error? */
if (icmp4_errcmp((char *)&icmpd, ICMP4_ECHO_LEN, &to.sin_addr, buf, len, ICMP_DEST_UNREACH) ||
icmp4_errcmp((char *)&icmpd, ICMP4_ECHO_LEN, &to.sin_addr, buf, len, ICMP_TIME_EXCEEDED)) {
return -1;
}
}
}
}
} else {
return -1; /* error */
}
}
else {
if (++icmp_errs<=ICMP_MAX_ERRS) {
log_error("Unhandled poll/select event in ping4() at %s, line %d.",__FILE__,__LINE__);
}
return -1;
}
tpassed=time(NULL)-tm;
} while (tpassed<timeout);
}
return -1; /* no answer */
}
#ifdef ENABLE_IPV6
/* Takes a packet as send out and a received ICMPv6 packet and looks whether the ICMPv6 packet is
* an error reply on the sent-out one. packet is only the packet (without IPv6 header).
* errmsg does not include an IPv6 header. to is the address the sent packet went to.
* This is specialized for icmpv6: It zeros out the checksum field, which is filled in
* by the kernel, and expects that the checksum field in the sent-out packet is zeroed out too
* We need a little magic to parse the answer, as there could be extension headers present, end
* we don't know their length a priori.*/
static int icmp6_errcmp(char *packet, int plen, struct in6_addr *to, char *errmsg, int elen, int errtype)
{
struct icmp6_hdr icmph;
struct ip6_hdr eiph;
struct ip6_hbh hbh;
char *data;
int rlen,nxt;
/* XXX: lots of memcpy here to avoid unaligned access faults on alpha */
if (elen<sizeof(icmph)+sizeof(eiph))
return 0;
memcpy(&icmph,errmsg,sizeof(icmph));
memcpy(&eiph,errmsg+sizeof(icmph),sizeof(eiph));
if (!IN6_ARE_ADDR_EQUAL(&eiph.ip6_dst, to))
return 0;
rlen=elen-sizeof(icmph)-sizeof(eiph);
data=errmsg+sizeof(icmph)+sizeof(eiph);
nxt=eiph.ip6_nxt;
/* Now, jump over any known option header that might be present, and then
* try to compare the packets. */
while (nxt!=IPPROTO_ICMPV6) {
/* Those are the headers we understand. */
if (nxt!=IPPROTO_HOPOPTS && nxt!=IPPROTO_ROUTING && nxt!=IPPROTO_DSTOPTS)
return 0;
if (rlen<sizeof(hbh))
return 0;
memcpy(&hbh,data,sizeof(hbh));
if (rlen<hbh.ip6h_len)
return 0;
rlen-=hbh.ip6h_len;
nxt=hbh.ip6h_nxt;
data+=hbh.ip6h_len;
}
if (rlen<sizeof(struct icmp6_hdr))
return 0;
/* Zero out the checksum of the enclosed ICMPv6 header, it is kernel-filled in the original data */
memset(((char *)data)+offsetof(struct icmp6_hdr,icmp6_cksum),0,sizeof(icmph.icmp6_cksum));
return icmph.icmp6_type==errtype && memcmp(data, packet, plen<rlen?plen:rlen)==0;
}
/* IPv6/ICMPv6 ping. Called from ping (see below) */
static int ping6(struct in6_addr a, int timeout, int rep)
{
int i;
/* int ck_offs=2;*/
int isock;
struct icmp6_filter f;
unsigned short id=(unsigned short)(rand()&0xffff); /* randomize a ping id */
isock=ping6_isocket;
ICMP6_FILTER_SETBLOCKALL(&f);
ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY,&f);
ICMP6_FILTER_SETPASS(ICMP6_DST_UNREACH,&f);
ICMP6_FILTER_SETPASS(ICMP6_TIME_EXCEEDED,&f);
if (setsockopt(isock,IPPROTO_ICMPV6,ICMP6_FILTER,&f,sizeof(f))==-1) {
if (++icmp_errs<=ICMP_MAX_ERRS) {
log_warn("icmpv6 ping: setsockopt() failed: %s", strerror(errno));
}
return -1;
}
for (i=0;i<rep;i++) {
struct sockaddr_in6 from;
struct icmp6_hdr icmpd;
long tm,tpassed;
icmpd.icmp6_type=ICMP6_ECHO_REQUEST;
icmpd.icmp6_code=0;
icmpd.icmp6_cksum=0; /* The friendly kernel does fill that in for us. */
icmpd.icmp6_id=htons((uint16_t)id);
icmpd.icmp6_seq=htons((uint16_t)i);
memset(&from,0,sizeof(from));
from.sin6_family=AF_INET6;
from.sin6_flowinfo=IPV6_FLOWINFO;
from.sin6_port=0;
from.sin6_addr=a;
SET_SOCKA_LEN6(from);
if (sendto(isock,&icmpd,sizeof(icmpd),0,(struct sockaddr *)&from,sizeof(from))==-1) {
if (++icmp_errs<=ICMP_MAX_ERRS) {
log_warn("icmpv6 ping: sendto() failed: %s.",strerror(errno));
}
return -1;
}
/* listen for reply. */
tm=time(NULL); tpassed=0;
do {
int psres;
#ifdef NO_POLL
fd_set fds,fdse;
struct timeval tv;
FD_ZERO(&fds);
PDNSD_ASSERT(isock<FD_SETSIZE,"socket file descriptor exceeds FD_SETSIZE.");
FD_SET(isock, &fds);
fdse=fds;
tv.tv_usec=0;
tv.tv_sec=timeout>tpassed?timeout-tpassed:0;
/* There is a possible race condition with the arrival of a signal here,
but it is so unlikely to be a problem in practice that the effort
to do this properly is not worth the trouble.
*/
if(is_interrupted_servstat_thread()) {
DEBUG_MSG("server status thread interrupted.\n");
return -1;
}
psres=select(isock+1,&fds,NULL,&fdse,&tv);
#else
struct pollfd pfd;
pfd.fd=isock;
pfd.events=POLLIN;
/* There is a possible race condition with the arrival of a signal here,
but it is so unlikely to be a problem in practice that the effort
to do this properly is not worth the trouble.
*/
if(is_interrupted_servstat_thread()) {
DEBUG_MSG("server status thread interrupted.\n");
return -1;
}
psres=poll(&pfd,1,timeout>tpassed?(timeout-tpassed)*1000:0);
#endif
if (psres<0) {
if(errno==EINTR && is_interrupted_servstat_thread()) {
DEBUG_MSG("poll/select interrupted in server status thread.\n");
}
else if (++icmp_errs<=ICMP_MAX_ERRS) {
log_warn("poll/select failed: %s",strerror(errno));
}
return -1;
}
if (psres==0) /* timed out */
break;
#ifdef NO_POLL
if (FD_ISSET(isock,&fds) || FD_ISSET(isock,&fdse))
#else
if (pfd.revents&(POLLIN|POLLERR))
#endif
{
char buf[1024];
socklen_t sl=sizeof(from);
int len;
if ((len=recvfrom(isock,&buf,sizeof(buf),0,(struct sockaddr *)&from,&sl))!=-1) {
if (len>=sizeof(struct icmp6_hdr)) {
/* we get packets without IPv6 header, luckily */
struct icmp6_hdr icmpp;
memcpy(&icmpp, buf, sizeof(icmpp));
if (IN6_ARE_ADDR_EQUAL(&from.sin6_addr,&a) &&
ntohs(icmpp.icmp6_id)==id && ntohs(icmpp.icmp6_seq)<=i) {
return (i-ntohs(icmpp.icmp6_seq))*timeout+(time(NULL)-tm); /* return the number of ticks */
} else {
/* No regular echo reply. Maybe an error? */
if (icmp6_errcmp((char *)&icmpd, sizeof(icmpd), &from.sin6_addr, buf, len, ICMP6_DST_UNREACH) ||
icmp6_errcmp((char *)&icmpd, sizeof(icmpd), &from.sin6_addr, buf, len, ICMP6_TIME_EXCEEDED)) {
return -1;
}
}
}
} else {
return -1; /* error */
}
}
else {
if (++icmp_errs<=ICMP_MAX_ERRS) {
log_error("Unhandled poll/select event in ping6() at %s, line %d.",__FILE__,__LINE__);
}
return -1;
}
tpassed=time(NULL)-tm;
} while (tpassed<timeout);
}
return -1; /* no answer */
}
#endif /* ENABLE_IPV6*/
/* Perform an icmp ping on a host, returning -1 on timeout or
* "host unreachable" or the ping time in 10ths of secs
* (but actually, we are not that accurate any more).
* timeout in 10ths of seconds, rep is the repetition count
*/
int ping(pdnsd_a *addr, int timeout, int rep)
{
if (SEL_IPVER(ping_isocket,ping6_isocket) == -1)
return -1;
/* We were given a timeout in 10ths of seconds,
but ping4 and ping6 want a timeout in seconds. */
timeout /= 10;
#ifdef ENABLE_IPV4
if (run_ipv4)
return ping4(addr->ipv4,timeout,rep);
#endif
#ifdef ENABLE_IPV6
ELSE_IPV6 {
/* If it is a IPv4 mapped IPv6 address, we prefer ICMPv4. */
if (ping_isocket!=-1 && IN6_IS_ADDR_V4MAPPED(&addr->ipv6)) {
struct in_addr v4;
v4.s_addr=((uint32_t *)&addr->ipv6)[3];
return ping4(v4,timeout,rep);
} else
return ping6(addr->ipv6,timeout,rep);
}
#endif
return -1;
}
#else
# error "Huh! No OS macro defined!"
#endif /*(TARGET==TARGET_LINUX) || (TARGET==TARGET_BSD) || (TARGET==TARGET_CYGWIN)*/

43
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/* icmp.h - Server response tests using ICMP echo requests
Copyright (C) 2000 Thomas Moestl
Copyright (C) 2007 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef ICMP_H
#define ICMP_H
#include <config.h>
#include "ipvers.h"
volatile extern int ping_isocket;
volatile extern int ping6_isocket;
/* initialize a socket for pinging */
void init_ping_socket(void);
/*
* This is a classical ping routine.
* timeout in 10ths of seconds, rep is the repetition count.
*/
int ping(pdnsd_a *addr, int timeout, int rep);
#endif

297
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/* ipvers.h - definitions for IPv4 and IPv6
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2003, 2007, 2009 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef IPVERS_H
#define IPVERS_H
#include <config.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "rr_types.h"
#if defined(ENABLE_IPV4) && !defined(ENABLE_IPV6)
# ifdef DEFAULT_IPV4
# undef DEFAULT_IPV4
# endif
# define DEFAULT_IPV4 1
#endif
#if !defined(ENABLE_IPV4) && defined(ENABLE_IPV6)
# ifdef DEFAULT_IPV4
# undef DEFAULT_IPV4
# endif
# define DEFAULT_IPV4 0
#endif
#if defined(ENABLE_IPV4) && defined(ENABLE_IPV6)
# define ELSE_IPV6 else
#else
# define ELSE_IPV6
#endif
/* From main.c */
#ifdef ENABLE_IPV4
# ifdef ENABLE_IPV6
extern short int run_ipv4;
extern short int cmdlineipv;
# define SEL_IPVER(a4,a6) (run_ipv4? a4: a6)
# else
# define run_ipv4 1
# define SEL_IPVER(a4,a6) (a4)
# endif
#else
# define run_ipv4 0
# define SEL_IPVER(a4,a6) (a6)
#endif
#ifdef ENABLE_IPV6
#define DEFAULT_IPV4_6_PREFIX "::ffff:0.0.0.0"
/* extern short int cmdlineprefix; */
#endif
#if (TARGET==TARGET_LINUX) && !defined(HAVE_STRUCT_IN_PKTINFO)
struct in_pktinfo
{
int ipi_ifindex;
struct in_addr ipi_spec_dst;
struct in_addr ipi_addr;
};
#endif
#if (TARGET==TARGET_LINUX)
/* some older glibc versions seem to lack this. */
# ifndef IP_PKTINFO
# define IP_PKTINFO 8
# endif
# ifndef CMSG_LEN
/* ---- from glibc 2.1.2 */
/* Ancillary data object manipulation macros. */
# if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2
# define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data)
# else
# define CMSG_DATA(cmsg) ((unsigned char *) ((struct cmsghdr *) (cmsg) + 1))
# endif
# define CMSG_NXTHDR(mhdr, cmsg) __cmsg_nxthdr (mhdr, cmsg)
# define CMSG_FIRSTHDR(mhdr) \
((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr) \
? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) NULL)
# define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) \
& ~(sizeof (size_t) - 1))
# define CMSG_SPACE(len) (CMSG_ALIGN (len) \
+ CMSG_ALIGN (sizeof (struct cmsghdr)))
# define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
extern struct cmsghdr *__cmsg_nxthdr __P ((struct msghdr *__mhdr,
struct cmsghdr *__cmsg));
# ifdef __USE_EXTERN_INLINES
# ifndef _EXTERN_INLINE
# define _EXTERN_INLINE extern __inline
# endif
_EXTERN_INLINE struct cmsghdr *
__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg) __THROW
{
if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
/* The kernel header does this so there may be a reason. */
return 0;
__cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg
+ CMSG_ALIGN (__cmsg->cmsg_len));
if ((unsigned char *) (__cmsg + 1) >= ((unsigned char *) __mhdr->msg_control
+ __mhdr->msg_controllen)
|| ((unsigned char *) __cmsg + CMSG_ALIGN (__cmsg->cmsg_len)
>= ((unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)))
/* No more entries. */
return 0;
return __cmsg;
}
# endif /* Use `extern inline'. */
/* ---- */
# endif
#endif
#if defined(ENABLE_IPV4) && !defined(SIN_LEN) && (TARGET==TARGET_BSD)
# define SIN_LEN
#endif
#if defined(ENABLE_IPV6) && (TARGET==TARGET_LINUX)
/* Some glibc versions (I know of 2.1.2) get this wrong, so we define our own. To be exact, this is fixed
* glibc code. */
#ifdef IN6_ARE_ADDR_EQUAL
# undef IN6_ARE_ADDR_EQUAL
#endif
#define IN6_ARE_ADDR_EQUAL(a,b) \
((((uint32_t *) (a))[0] == ((uint32_t *) (b))[0]) && \
(((uint32_t *) (a))[1] == ((uint32_t *) (b))[1]) && \
(((uint32_t *) (a))[2] == ((uint32_t *) (b))[2]) && \
(((uint32_t *) (a))[3] == ((uint32_t *) (b))[3]))
#endif
/* This is the IPv6 flowid that we pass on to the IPv6 protocol stack. This value was not currently defined
* at the time of writing. Should this change, define a appropriate flowinfo here. */
#ifndef IPV6_FLOWINFO
#define IPV6_FLOWINFO 0
#endif
/* There does not seem to be a function/macro to generate IPv6-mapped IPv4-Adresses. So here comes mine.
* Pass an in_addr* and an in6_addr* */
#define IPV6_MAPIPV4(a,b) {((uint32_t *)(b))[3]=(a)->s_addr; \
((uint32_t *)(b))[2]=htonl(0xffff); \
((uint32_t *)(b))[1]=((uint32_t *)(b))[0]=0; }
/* A macro to extract the pointer to the address of a struct sockaddr (_in or _in6) */
#define SOCKA_A4(a) ((pdnsd_a *)&((struct sockaddr_in *)(a))->sin_addr)
#define SOCKA_A6(a) ((pdnsd_a *)&((struct sockaddr_in6 *)(a))->sin6_addr)
#define SOCKA_A(a) SEL_IPVER(SOCKA_A4(a),SOCKA_A6(a))
#define PDNSD_PF_INET SEL_IPVER(PF_INET,PF_INET6)
#define PDNSD_AF_INET SEL_IPVER(AF_INET,AF_INET6)
/* This is to compare two addresses. This is a macro because it may change due to the more complex IPv6 adressing architecture
* (there are, for example, two equivalent addresses of the loopback device)
* Pass this two addresses as in_addr or in6_addr. pdnsd_a is ok (it is a union) */
#define ADDR_EQUIV4(a,b) (((struct in_addr *)(a))->s_addr==((struct in_addr *)(b))->s_addr)
#define ADDR_EQUIV6(a,b) IN6_ARE_ADDR_EQUAL(((struct in6_addr *)(a)),((struct in6_addr *)(b)))
#define ADDR_EQUIV(a,b) SEL_IPVER(ADDR_EQUIV4(a,b), ADDR_EQUIV6(a,b))
/* Compare an IPv6 adress with an IPv4 one. b should have type struct in_addr*.
Note the similarity with the IPV6_MAPIPV4 macro. */
#define ADDR_EQUIV6_4(a,b) (((uint32_t *)(a))[3]==(b)->s_addr && \
((uint32_t *)(a))[2]==htonl(0xffff) && \
((uint32_t *)(a))[1]==0 && \
((uint32_t *)(a))[0]==0)
/* Compare two address a and b in combination with a netmask m.
Only the bits coresponding to those set in the netmask are matched, the rest are ignored.
Pass in_addr* or in6_addr* arguments, respectively. */
#define ADDR4MASK_EQUIV(a,b,m) ((((a)->s_addr^(b)->s_addr)&(m)->s_addr)==0)
#define ADDR6MASK_EQUIV(a,b,m) (((((uint32_t *)(a))[0]^((uint32_t *)(b))[0])&((uint32_t *)(m))[0])==0 && \
((((uint32_t *)(a))[1]^((uint32_t *)(b))[1])&((uint32_t *)(m))[1])==0 && \
((((uint32_t *)(a))[2]^((uint32_t *)(b))[2])&((uint32_t *)(m))[2])==0 && \
((((uint32_t *)(a))[3]^((uint32_t *)(b))[3])&((uint32_t *)(m))[3])==0)
/* See if we need 4.4BSD style sockaddr_* structures and define some macros that set the length field.
* The non-4.4BSD behaviour is the only one that is POSIX-conformant.*/
#if defined(SIN6_LEN) || defined(SIN_LEN)
# define BSD44_SOCKA
# define SET_SOCKA_LEN4(socka) (socka.sin_len=sizeof(struct sockaddr_in))
# define SET_SOCKA_LEN6(socka) (socka.sin6_len=sizeof(struct sockaddr_in6))
#else
# define SET_SOCKA_LEN4(socka)
# define SET_SOCKA_LEN6(socka)
#endif
#ifdef ENABLE_IPV6
# define ADDRSTR_MAXLEN INET6_ADDRSTRLEN
#else
# ifdef INET_ADDRSTRLEN
# define ADDRSTR_MAXLEN INET_ADDRSTRLEN
# else
# define ADDRSTR_MAXLEN 16
# endif
#endif
#if (TARGET==TARGET_BSD) || (TARGET==TARGET_CYGWIN)
# define SOL_IPV6 IPPROTO_IPV6
#endif
#ifdef ENABLE_IPV6
# ifndef IPV6_RECVPKTINFO
/* This appears to be needed e.g. on Darwin (Mac OS X). */
# define IPV6_RECVPKTINFO IPV6_PKTINFO
# endif
#endif
typedef union {
#ifdef ENABLE_IPV4
struct in_addr ipv4;
#endif
#ifdef ENABLE_IPV6
struct in6_addr ipv6;
#endif
} pdnsd_a;
#ifdef ENABLE_IPV4
#define PDNSD_A_INITIALIZER {{INADDR_ANY}}
#else
#define PDNSD_A_INITIALIZER {IN6ADDR_ANY_INIT}
#endif
/* The pdnsd_a2 type is very similar to pdnsd_a, but can hold
both an IPv4 and an IPv6 address at the same time,
i.e. a struct instead of a union.
*/
typedef struct {
#ifdef ENABLE_IPV6
struct in6_addr ipv6;
#endif
struct in_addr ipv4;
} pdnsd_a2;
/* Macros/functions for assigning/converting a pdnsd_a* to a pdnsd_a2* type,
and vice versa.
*/
#ifdef ENABLE_IPV6
inline static void SET_PDNSD_A2(pdnsd_a2 *a2, pdnsd_a *a) __attribute__((always_inline));
inline static void SET_PDNSD_A2(pdnsd_a2 *a2, pdnsd_a *a)
{
#ifdef ENABLE_IPV4
if(run_ipv4)
a2->ipv4=a->ipv4;
else
#endif
{
a2->ipv6=a->ipv6;
a2->ipv4.s_addr=INADDR_ANY;
}
}
#else
# define SET_PDNSD_A2(a2,a) ((a2)->ipv4=(a)->ipv4)
#endif
#define PDNSD_A2_TO_A(a2) SEL_IPVER(((pdnsd_a *)&(a2)->ipv4),((pdnsd_a *)&(a2)->ipv6))
/* Do we have sufficient support in the C libraries to allow local AAAA records
to be defined? */
#if defined(HAVE_STRUCT_IN6_ADDR) && defined(HAVE_INET_PTON)
# define ALLOW_LOCAL_AAAA IS_CACHED_AAAA
#else
# define ALLOW_LOCAL_AAAA 0
#endif
/* Used to enter local records */
typedef union {
struct in_addr ipv4;
#if ALLOW_LOCAL_AAAA
struct in6_addr ipv6;
#endif
} pdnsd_ca;
#endif

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/* list.c - Dynamic array and list handling
Copyright (C) 2001 Thomas Moestl
Copyright (C) 2002, 2003, 2007, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <stdlib.h>
#include <string.h>
#include "helpers.h"
#include "error.h"
#include "list.h"
/* Grow a dynamic array to hold one extra element.
This could be done using da_resize(), but this is such a common operation
it is has been given its own optimized implementation.
da_grow1() returns a pointer to the new (possibly reallocated) array if
successful, otherwise it frees the old array (after freeing all the array
elements if a clean-up routine is supplied) and returns NULL.
*/
darray da_grow1(darray a, size_t headsz, size_t elemsz, void (*cleanuproutine) (void *))
{
size_t k = (a?a->nel:0);
if(!a || (k!=0 && (k&7)==0)) {
darray tmp=(darray)realloc(a, headsz+elemsz*(k+8));
if (!tmp && a) {
if(cleanuproutine) {
size_t i;
for(i=0;i<k;++i)
cleanuproutine(((char *)a)+headsz+elemsz*i);
}
free(a);
}
a=tmp;
}
if(a) a->nel=k+1;
return a;
}
inline static size_t alloc_nel(size_t n)
{
return n==0 ? 8 : (n+7)&(~7);
}
/* da_resize() allows you to grow (or shrink) a dynamic array to an arbitrary length n,
but is otherwise similar to da_grow1().
*/
darray da_resize(darray a, size_t headsz, size_t elemsz, size_t n, void (*cleanuproutine) (void *))
{
size_t ael = (a?alloc_nel(a->nel):0);
size_t new_ael = alloc_nel(n);
if(new_ael != ael) {
/* adjust alloced space. */
darray tmp=(darray)realloc(a, headsz+elemsz*new_ael);
if (!tmp && a) {
if(cleanuproutine) {
size_t i,k=a->nel;
for(i=0;i<k;++i)
cleanuproutine(((char *)a)+headsz+elemsz*i);
}
free(a);
}
a=tmp;
}
if(a) a->nel=n;
return a;
}
#ifdef ALLOC_DEBUG
void DBGda_free(darray a, size_t headsz, size_t elemsz, char *file, int line)
{
if (a==NULL)
{DEBUG_MSG("- da_free, %s:%d, not initialized\n", file, line);}
else
{DEBUG_MSG("- da_free, %s:%d, %lu bytes\n", file, line,
(unsigned long)(headsz+elemsz*alloc_nel(a->nel)));}
free(a);
}
#endif
#define DLISTALIGN(len) (((len) + (sizeof(size_t)-1)) & ~(sizeof(size_t)-1))
/* This mask corresponds to a chunk size of 1024. */
#define DLISTCHUNKSIZEMASK ((size_t)0x3ff)
/* Add space for a new item of size len to the list a.
dlist_grow() returns a pointer to the new (possibly reallocated) list structure if
successful, otherwise it frees the old list and returns NULL.
*/
dlist dlist_grow(dlist a, size_t len)
{
size_t sz=0, allocsz=0, szincr, newsz;
if(a) {
sz=a->last+a->lastsz;
allocsz = (sz+DLISTCHUNKSIZEMASK)&(~DLISTCHUNKSIZEMASK);
*((size_t *)&a->data[a->last])=a->lastsz;
}
szincr=DLISTALIGN(len+sizeof(size_t));
newsz=sz+szincr;
if(newsz>allocsz) {
dlist tmp;
allocsz = (newsz+DLISTCHUNKSIZEMASK)&(~DLISTCHUNKSIZEMASK);
tmp=realloc(a, sizeof(struct _dynamic_list_head)+allocsz);
if (!tmp)
free(a);
a=tmp;
}
if(a) {
a->last=sz;
a->lastsz=szincr;
*((size_t *)&a->data[sz])=0;
}
return a;
}
/* Add a new node, capable of holding data of size len, at the end of a linked list.
llist_grow() returns 1 if successful, otherwise it frees the entire linked list
and returns 0.
*/
int llist_grow(llist *a, size_t len)
{
struct llistnode_s *new= (struct llistnode_s *)malloc(sizeof(struct llistnode_s)+len);
if(!new) {
llist_free(a);
return 0;
}
new->next=NULL;
if(!a->first)
a->first=new;
else
a->last->next=new;
a->last=new;
return 1;
}
void llist_free(llist *a)
{
struct llistnode_s *p= a->first;
while(p) {
struct llistnode_s *next= p->next;
free(p);
p=next;
}
a->first=NULL;
a->last= NULL;
}

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/* list.h - Dynamic array and list handling
Copyright (C) 2001 Thomas Moestl
Copyright (C) 2002, 2003, 2007, 2009, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef LIST_H
#define LIST_H
#include <stdlib.h>
#include <string.h>
#include "pdnsd_assert.h"
typedef struct {size_t nel;} *darray;
/* used in type declarations */
#define DYNAMIC_ARRAY(typ) struct {size_t nel; typ elem[0];}
#define DA_TYP_OFFSET(atyp) ((size_t)((atyp)0)->elem)
#define DA_OFFSET(a) DA_TYP_OFFSET(typeof (a))
#define DA_CREATE(atyp,n) ((atyp)da_resize(NULL,DA_TYP_OFFSET(atyp),sizeof(((atyp)0)->elem[0]),n,NULL))
#define DA_INDEX(a,i) ((a)->elem[i])
/* Used often, so make special-case macro here */
#define DA_LAST(a) ((a)->elem[(a)->nel-1])
#define DA_GROW1(a) ((typeof (a))da_grow1((darray)(a),DA_OFFSET(a),sizeof((a)->elem[0]),NULL))
#define DA_GROW1_F(a,cleanup) ((typeof (a))da_grow1((darray)(a),DA_OFFSET(a),sizeof((a)->elem[0]),cleanup))
#define DA_RESIZE(a,n) ((typeof (a))da_resize((darray)(a),DA_OFFSET(a),sizeof((a)->elem[0]),n,NULL))
#define DA_NEL(a) da_nel((darray)(a))
/*
* Some or all of these should be inline.
* They aren't macros for type safety.
*/
darray da_grow1(darray a, size_t headsz, size_t elemsz, void (*cleanuproutine) (void *));
darray da_resize(darray a, size_t headsz, size_t elemsz, size_t n, void (*cleanuproutine) (void *));
inline static unsigned int da_nel(darray a)
__attribute__((always_inline));
inline static unsigned int da_nel(darray a)
{
if (a==NULL)
return 0;
return a->nel;
}
/* alloc/free debug code.*/
#ifdef ALLOC_DEBUG
void DBGda_free(darray a, size_t headsz, size_t elemsz, char *file, int line);
#define da_free(a) DBGda_free((darray)(a),DA_OFFSET(a),sizeof((a)->elem[0]), __FILE__, __LINE__)
#else
#define da_free free
#endif
/* This dynamic "list" structure is useful if the items are not all the same size.
The elements can only be read back in sequential order, not indexed as with the dynamic arrays.
*/
struct _dynamic_list_head {
size_t last,lastsz;
char data[0];
};
typedef struct _dynamic_list_head *dlist;
inline static void *dlist_first(dlist a)
__attribute__((always_inline));
inline static void *dlist_first(dlist a)
{
return a?&a->data[sizeof(size_t)]:NULL;
}
/* dlist_next() returns a reference to the next item in the list, or NULL is there is no next item.
ref should be properly aligned.
If the dlist was grown with dlist_grow(), this should be OK.
*/
inline static void *dlist_next(void *ref)
__attribute__((always_inline));
inline static void *dlist_next(void *ref)
{
size_t incr= *(((size_t *)ref)-1);
return incr?((char *)ref)+incr:NULL;
}
/* dlist_last() returns a reference to the last item. */
inline static void *dlist_last(dlist a)
__attribute__((always_inline));
inline static void *dlist_last(dlist a)
{
return a?&a->data[a->last+sizeof(size_t)]:NULL;
}
dlist dlist_grow(dlist a, size_t len);
#define dlist_free free
/* linked list data type. */
struct llistnode_s {
struct llistnode_s *next;
char *data[0];
};
typedef struct {
struct llistnode_s *first, *last;
}
llist;
inline static void llist_init(llist *a)
__attribute__((always_inline));
inline static void llist_init(llist *a)
{
a->first=NULL;
a->last= NULL;
}
inline static int llist_isempty(llist *a)
__attribute__((always_inline));
inline static int llist_isempty(llist *a)
{
return a->first==NULL;
}
inline static void *llist_first(llist *a)
__attribute__((always_inline));
inline static void *llist_first(llist *a)
{
struct llistnode_s *p= a->first;
return p?p->data:NULL;
}
inline static void *llist_next(void *ref)
__attribute__((always_inline));
inline static void *llist_next(void *ref)
{
struct llistnode_s *next= *(((struct llistnode_s **)ref)-1);
return next?next->data:NULL;
}
inline static void *llist_last(llist *a)
__attribute__((always_inline));
inline static void *llist_last(llist *a)
{
struct llistnode_s *p= a->last;
return p?p->data:NULL;
}
int llist_grow(llist *a, size_t len);
void llist_free(llist *a);
#endif /* def LIST_H */

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/* main.c - Command line parsing, intialisation and server start
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
/* in order to use O_NOFOLLOW on Linux: */
/* #define _GNU_SOURCE */
#include <config.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <signal.h>
#include <unistd.h>
#include <syslog.h>
#include <pwd.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include "consts.h"
#include "cache.h"
#include "status.h"
#include "servers.h"
#include "dns_answer.h"
#include "dns_query.h"
#include "error.h"
#include "helpers.h"
#include "icmp.h"
#include "hash.h"
#if DEBUG>0
short int debug_p=0;
#endif
short int stat_pipe=0;
/* int sigr=0; */
#if defined(ENABLE_IPV4) && defined(ENABLE_IPV6)
short int run_ipv4=DEFAULT_IPV4;
short int cmdlineipv=0;
#endif
cmdlineflags_t cmdline={0};
pthread_t main_thrid,servstat_thrid,statsock_thrid,tcps_thrid,udps_thrid;
uid_t init_uid;
#if DEBUG>0
FILE *dbg_file=NULL;
#endif
volatile int tcp_socket=-1;
volatile int udp_socket=-1;
sigset_t sigs_msk;
char *conf_file=CONFDIR"/pdnsd.conf";
/* version and licensing information */
static const char info_message[] =
"pdnsd - dns proxy daemon, version " VERSION "\n\n"
"Copyright (C) 2000, 2001 Thomas Moestl\n"
"Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010 Paul A. Rombouts\n\n"
"pdnsd is free software; you can redistribute it and/or modify\n"
"it under the terms of the GNU General Public License as published by\n"
"the Free Software Foundation; either version 3 of the License, or\n"
"(at your option) any later version.\n\n"
"pdnsd is distributed in the hope that it will be useful,\n"
"but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
"GNU General Public License for more details.\n\n"
"You should have received a copy of the GNU General Public License\n"
"along with pdsnd; see the file COPYING. If not, see\n"
"<http://www.gnu.org/licenses/>.\n";
/* the help page */
static const char help_message[] =
"\n\nUsage: pdnsd [-h] [-V] [-s] [-d] [-g] [-t] [-p file] [-vn] [-mxx] [-c file]"
#ifdef ENABLE_IPV4
" [-4]"
#endif
#ifdef ENABLE_IPV6
" [-6] [-i prefix]"
#endif
#if defined(ENABLE_IPV4) && defined(ENABLE_IPV6)
" [-a]"
#endif
"\n\n"
"Options:\n"
"-h\t\t--or--\n"
"--help\t\tprint this help page and exit.\n"
"-V\t\t--or--\n"
"--version\tprint version and license information and exit.\n"
"--pdnsd-user\tprint the user pdnsd will run as and exit.\n"
"-s\t\t--or--\n"
"--status\tEnable status control socket in the cache directory.\n"
"-d\t\t--or--\n"
"--daemon\tStart pdnsd in daemon mode (as background process.)\n"
"-g\t\t--or--\n"
"--debug\t\tPrint some debug messages on the console or to the\n"
"\t\tfile pdnsd.debug in your cache directory (in daemon mode).\n"
"-t\t\t--or--\n"
"--tcp\t\tEnables the TCP server thread. pdnsd will then serve\n"
"\t\tTCP and UDP queries.\n"
"-p\t\tWrites the pid the server runs as to a specified filename.\n"
"\t\tWorks only in daemon mode.\n"
"-vn\t\tsets the verbosity of pdnsd. n is a numeric argument from 0\n"
"\t\t(normal operation) to 9 (many messages for debugging).\n"
"\t\tUse like -v2\n"
"-mxx\t\tsets the query method pdnsd uses. Possible values for xx are:\n"
"\t\tuo (UDP only), to (TCP only), tu (TCP or, if the server\n"
"\t\tdoes not support this, UDP) and ut (UDP and, if the reply was\n"
"\t\ttruncated, TCP). Use like -muo. Preset: "
#if M_PRESET==UDP_ONLY
"-muo"
#elif M_PRESET==TCP_ONLY
"-mto"
#elif M_PRESET==TCP_UDP
"-mtu"
#else
"-mut"
#endif
"\n"
"-c\t\t--or--\n"
"--config-file\tspecifies the file the configuration is read from.\n"
"\t\tDefault is " CONFDIR "/pdnsd.conf\n"
#ifdef ENABLE_IPV4
"-4\t\tswitches to IPv4 mode.\n"
"\t\t"
# if DEFAULT_IPV4
"On"
# else
"Off"
# endif
" by default.\n"
#endif
#ifdef ENABLE_IPV6
"-6\t\tswitches to IPv6 mode.\n"
"\t\t"
# if DEFAULT_IPV4
"Off"
# else
"On"
# endif
" by default.\n"
"-i\t\t--or--\n"
"--ipv4_6_prefix\tspecifies the prefix pdnsd uses to map IPv4 to IPv6\n"
"\t\taddresses. Must be a valid IPv6 address.\n"
"\t\tDefault is " DEFAULT_IPV4_6_PREFIX "\n"
#endif
#if defined(ENABLE_IPV4) && defined(ENABLE_IPV6)
"-a\t\tWith this option, pdnsd will try to detect automatically if\n"
"\t\tthe system supports IPv6, and revert to IPv4 otherwise.\n"
#endif
"\n\n\"no\" can be prepended to the --status, --daemon, --debug and --tcp\n"
"options (e.g. --notcp) to reverse their effect.\n";
/* These are some init steps we have to call before we get daemon on linux, but need
* to call after daemonizing on other OSes.
* Theay are also the last steps before we drop privileges. */
int final_init()
{
#ifndef NO_TCP_SERVER
if (!global.notcp)
tcp_socket=init_tcp_socket();
#endif
udp_socket=init_udp_socket();
if (tcp_socket==-1 && udp_socket==-1) {
log_error("tcp and udp initialization failed. Exiting.");
return 0;
}
if (global.strict_suid) {
if (!run_as(global.run_as)) {
return 0;
}
}
return 1;
}
#if defined(ENABLE_IPV4) && defined(ENABLE_IPV6)
/* Check if IPv6 is available.
* With thanks to Juliusz Chroboczek.
*/
static int check_ipv6()
{
int fd;
fd = socket(PF_INET6, SOCK_STREAM, 0);
if(fd < 0) {
if(errno == EPROTONOSUPPORT || errno == EAFNOSUPPORT || errno == EINVAL)
return 0;
return -1;
}
close(fd);
return 1;
}
#endif
/*
* Argument parsing, init, server startup
*/
int main(int argc,char *argv[])
{
int i,sig,pfd=-1; /* Initialized to inhibit compiler warning */
main_thrid=pthread_self();
servstat_thrid=main_thrid;
statsock_thrid=main_thrid;
tcps_thrid=main_thrid;
udps_thrid=main_thrid;
init_uid=getuid();
#ifdef ENABLE_IPV6
{
int err;
if((err=inet_pton(AF_INET6,DEFAULT_IPV4_6_PREFIX,&global.ipv4_6_prefix))<=0) {
fprintf(stderr,"Error: inet_pton() wont accept default prefix %s in %s, line %d\n",
DEFAULT_IPV4_6_PREFIX,__FILE__,__LINE__);
if(err)
perror("inet_pton");
exit(1);
}
}
#endif
/* Parse the command line.
Remember which options were specified here, because the command-line options
shall override the ones given in the config file */
for (i=1;i<argc;i++) {
char *arg=argv[i];
if (strcmp(arg,"-h")==0 || strcmp(arg,"--help")==0) {
fputs(info_message,stdout);
fputs(help_message,stdout);
exit(1);
} else if (strcmp(arg,"-V")==0 || strcmp(arg,"--version")==0) {
fputs(info_message,stdout);
exit(1);
} else if (strcmp(arg,"-c")==0 || strcmp(arg,"--config-file")==0) {
if (++i<argc) {
conf_file=argv[i];
} else {
fprintf(stderr,"Error: file name expected after %s option.\n",arg);
exit(1);
}
} else if (strcmp(arg,"-4")==0) {
#ifdef ENABLE_IPV4
# ifdef ENABLE_IPV6
run_ipv4=1; cmdlineipv=1;
# endif
#else
fprintf(stderr,"Error: -4: pdnsd was compiled without IPv4 support.\n");
exit(1);
#endif
} else if (strcmp(arg,"-6")==0) {
#ifdef ENABLE_IPV6
# ifdef ENABLE_IPV4
run_ipv4=0; cmdlineipv=1;
# endif
#else
fprintf(stderr,"Error: -6: pdnsd was compiled without IPv6 support.\n");
exit(1);
#endif
} else if (strcmp(arg,"-a")==0) {
#if defined(ENABLE_IPV4) && defined(ENABLE_IPV6)
int rv=check_ipv6();
if(rv<0) {
fprintf(stderr,"Error: -a: can't check availability of IPv6: %s\n"
"Try using -4 or -6 option instead.\n",strerror(errno));
exit(1);
}
if((run_ipv4= !rv))
fprintf(stderr,"Switching to IPv4 mode.\n");
cmdlineipv=1;
#else
fprintf(stderr,"Warning: -a option does nothing unless pdnsd is compiled with both IPv4 AND IPv6 support.\n");
#endif
} else if(strcmp(arg,"-i")==0 || strcmp(arg,"--ipv4_6_prefix")==0) {
if (++i<argc) {
#ifdef ENABLE_IPV6
if(inet_pton(AF_INET6,argv[i],&global.ipv4_6_prefix)<=0) {
fprintf(stderr,"Error: %s: argument not a valid IPv6 address.\n",arg);
exit(1);
}
cmdline.prefix=1;
#else
fprintf(stderr,"pdnsd was compiled without IPv6 support. %s will be ignored.\n",arg);
#endif
} else {
fprintf(stderr,"Error: IPv6 address expected after %s option.\n",arg);
exit(1);
}
} else if (strcmp(arg,"-s")==0 || strcmp(arg,"--status")==0) {
global.stat_pipe=1; cmdline.stat_pipe=1;
} else if (strcmp(arg,"--nostatus")==0) {
global.stat_pipe=0; cmdline.stat_pipe=1;
} else if (strcmp(arg,"-d")==0 || strcmp(arg,"--daemon")==0) {
global.daemon=1; cmdline.daemon=1;
} else if (strcmp(arg,"--nodaemon")==0) {
global.daemon=0; cmdline.daemon=1;
} else if (strcmp(arg,"-t")==0 || strcmp(arg,"--tcp")==0) {
global.notcp=0; cmdline.notcp=1;
#ifdef NO_TCP_SERVER
fprintf(stderr,"pdnsd was compiled without tcp server support. -t has no effect.\n");
#endif
} else if (strcmp(arg,"--notcp")==0) {
global.notcp=1; cmdline.notcp=1;
} else if (strcmp(arg,"-p")==0) {
if (++i<argc) {
global.pidfile=argv[i]; cmdline.pidfile=1;
} else {
fprintf(stderr,"Error: file name expected after -p option.\n");
exit(1);
}
} else if (strncmp(arg,"-v",2)==0) {
if (strlen(arg)!=3 || !isdigit(arg[2])) {
fprintf(stderr,"Error: one digit expected after -v option (like -v2).\n");
exit(1);
}
global.verbosity=arg[2]-'0'; cmdline.verbosity=1;
} else if (strncmp(arg,"-m",2)==0) {
if (strlen(arg)!=4) {
fprintf(stderr,"Error: uo, to or tu expected after the -m option (like -muo).\n");
exit(1);
}
if (strcmp(&arg[2],"uo")==0) {
#ifdef NO_UDP_QUERIES
fprintf(stderr,"Error: pdnsd was compiled without UDP support.\n");
exit(1);
#else
global.query_method=UDP_ONLY;
#endif
} else if (strcmp(&arg[2],"to")==0) {
#ifdef NO_TCP_QUERIES
fprintf(stderr,"Error: pdnsd was compiled without TCP support.\n");
exit(1);
#else
global.query_method=TCP_ONLY;
#endif
} else if (strcmp(&arg[2],"tu")==0) {
#if defined(NO_UDP_QUERIES) || defined(NO_TCP_QUERIES)
fprintf(stderr,"Error: pdnsd was not compiled with UDP and TCP support.\n");
exit(1);
#else
global.query_method=TCP_UDP;
#endif
} else if (strcmp(&arg[2],"ut")==0) {
#if defined(NO_UDP_QUERIES) || defined(NO_TCP_QUERIES)
fprintf(stderr,"Error: pdnsd was not compiled with UDP and TCP support.\n");
exit(1);
#else
global.query_method=UDP_TCP;
#endif
} else {
fprintf(stderr,"Error: uo, to, tu or ut expected after the -m option (like -muo).\n");
exit(1);
}
cmdline.query_method=1;
} else if (strcmp(arg,"-g")==0 || strcmp(arg,"--debug")==0) {
global.debug=1; cmdline.debug=1;
#if !DEBUG
fprintf(stderr,"pdnsd was compiled without debugging support. -g has no effect.\n");
#endif
} else if (strcmp(arg,"--nodebug")==0) {
global.debug=0; cmdline.debug=1;
} else if (strcmp(arg,"--pdnsd-user")==0) {
cmdline.pdnsduser=1;
} else {
char *equ=strchr(arg,'=');
if(equ) {
int plen=equ-arg;
char *valstr=equ+1;
# define arg_isparam(strlit) (!strncmp(arg,strlit,strlitlen(strlit)) && plen==strlitlen(strlit))
if(arg_isparam("--config-file")) {
conf_file=valstr;
}
else if(arg_isparam("--ipv4_6_prefix")) {
#ifdef ENABLE_IPV6
if(inet_pton(AF_INET6,valstr,&global.ipv4_6_prefix)<=0) {
fprintf(stderr,"Error: --ipv4_6_prefix: argument not a valid IPv6 address.\n");
exit(1);
}
cmdline.prefix=1;
#else
fprintf(stderr,"pdnsd was compiled without IPv6 support. --ipv4_6_prefix will be ignored.\n");
#endif
}
else {
fprintf(stderr,"Error: unknown option: %.*s\n",plen,arg);
exit(1);
}
} else {
fprintf(stderr,"Error: unknown option: %s\n",arg);
exit(1);
}
}
}
init_cache();
{
char *errmsg;
if(!read_config_file(conf_file,&global,&servers,0,&errmsg)) {
fputs(errmsg?:"Out of memory.",stderr);
fputc('\n',stderr);
exit(3);
}
}
if(cmdline.pdnsduser) {
if (global.run_as[0]) {
printf("%s\n",global.run_as);
} else {
uid_t uid=getuid();
struct passwd *pws=getpwuid(uid);
if (pws)
printf("%s\n",pws->pw_name);
else
printf("%i\n",uid);
}
exit(0);
}
if(!global.cache_dir) global.cache_dir = CACHEDIR;
if(!global.scheme_file) global.scheme_file = "/var/lib/pcmcia/scheme";
stat_pipe=global.stat_pipe;
if (!(global.run_as[0] && global.strict_suid)) {
for (i=0; i<DA_NEL(servers); i++) {
servparm_t *sp=&DA_INDEX(servers,i);
if (sp->uptest==C_EXEC && sp->uptest_usr[0]=='\0') {
uid_t uid=getuid();
struct passwd *pws=getpwuid(uid);
/* No explicit uptest user given. If we run_as and strict_suid, we assume that
* this is safe. If not - warn. */
fprintf(stderr,"Warning: uptest command \"%s\" will implicitly be executed as user ", sp->uptest_cmd);
if (pws)
fprintf(stderr,"%s\n",pws->pw_name);
else
fprintf(stderr,"%i\n",uid);
}
}
}
if (global.daemon && global.pidfile) {
if (unlink(global.pidfile)!=0 && errno!=ENOENT) {
log_error("Error: could not unlink pid file %s: %s",global.pidfile, strerror(errno));
exit(1);
}
if ((pfd=open(global.pidfile,O_WRONLY|O_CREAT|O_EXCL
#ifdef O_NOFOLLOW
|O_NOFOLLOW
#else
/*
* No O_NOFOLLOW. Nevertheless, this not a hole, since the
* directory for pidfiles should not be world writeable.
* OS's that do not support O_NOFOLLOW are currently not
* supported, this is just-in-case code.
*/
#endif
, 0600))==-1)
{
log_error("Error: could not open pid file %s: %s",global.pidfile, strerror(errno));
exit(1);
}
}
for (i=0;i<DA_NEL(servers);i++) {
if (DA_INDEX(servers,i).uptest==C_PING) {
init_ping_socket();
break;
}
}
if (!init_rng())
exit(1);
#if (TARGET==TARGET_LINUX)
if (!final_init())
exit(1);
#endif
{
struct sigaction action;
action.sa_handler = SIG_IGN;
sigemptyset(&action.sa_mask);
action.sa_flags = 0;
if(sigaction(SIGPIPE, &action, NULL) != 0)
log_error("Could not call sigaction to ignore SIGPIPE: %s",strerror(errno));
}
umask(0077); /* for security reasons */
if (global.daemon) {
pid_t pid;
int fd;
/* become a daemon */
pid=fork();
if (pid==-1) {
log_error("Could not become a daemon: fork #1 failed: %s",strerror(errno));
exit(1);
}
if (pid!=0) {
/* This is the parent.
The child is going to do another fork() and will exit quickly.
Perhaps we should wait for the child and return
its exit status? */
exit(0); /* exit parent */
}
/* dissociate from controlling terminal */
if (setsid()==-1) {
log_error("Could not become a daemon: setsid failed: %s",strerror(errno));
_exit(1);
}
pid=fork();
if (pid==-1) {
log_error("Could not become a daemon: fork #2 failed: %s",strerror(errno));
_exit(1);
}
if (pid!=0) {
int exitval=0;
if (global.pidfile) {
if(fsprintf(pfd,"%i\n",(int)pid)<0) {
log_error("Error: could not write to pid file %s: %s",
global.pidfile, strerror(errno));
exitval=1;
}
if(close(pfd)<0) {
log_error("Error: could not close pid file %s: %s",
global.pidfile, strerror(errno));
exitval=1;
}
}
_exit(exitval); /* exit parent, so we are no session group leader */
}
if (global.pidfile) close(pfd);
if(chdir("/"))
log_warn("Cannot chdir to root directory: %s",strerror(errno));
if ((fd=open("/dev/null",O_RDONLY))==-1) {
log_error("Could not become a daemon: open for /dev/null failed: %s",strerror(errno));
_exit(1);
}
dup2(fd,0);
close(fd);
if ((fd=open("/dev/null",O_WRONLY))==-1) {
log_error("Could not become a daemon: open for /dev/null failed: %s",strerror(errno));
_exit(1);
}
dup2(fd,1);
dup2(fd,2);
close(fd);
#if DEBUG>0
if (global.debug) {
char dbgpath[strlen(global.cache_dir)+sizeof("/pdnsd.debug")];
stpcpy(stpcpy(dbgpath,global.cache_dir),"/pdnsd.debug");
if (!(dbg_file=fopen(dbgpath,"w")))
log_warn("Warning: could not open debug file %s: %s",dbgpath, strerror(errno));
}
#endif
} else {
#if DEBUG>0
dbg_file=stdout;
#endif
}
#if DEBUG>0
debug_p= (global.debug && dbg_file);
#endif
log_info(0,"pdnsd-%s starting.\n",VERSION);
DEBUG_MSG("Debug messages activated\n");
#if (TARGET!=TARGET_LINUX)
if (!final_init())
_exit(1);
#endif
DEBUG_MSG(SEL_IPVER("Using IPv4.\n", "Using IPv6.\n"));
/* initialize attribute for creating detached threads */
pthread_attr_init(&attr_detached);
pthread_attr_setdetachstate(&attr_detached,PTHREAD_CREATE_DETACHED);
read_disk_cache();
/* This must be done before any other thread is started to avoid races. */
if (stat_pipe)
init_stat_sock();
/* Before this point, logging and cache accesses are not locked because we are single-threaded. */
init_log_lock();
init_cache_lock();
sigemptyset(&sigs_msk);
sigaddset(&sigs_msk,SIGHUP);
sigaddset(&sigs_msk,SIGINT);
#ifndef THREADLIB_NPTL
sigaddset(&sigs_msk,SIGILL);
#endif
sigaddset(&sigs_msk,SIGABRT);
sigaddset(&sigs_msk,SIGFPE);
#ifndef THREADLIB_NPTL
sigaddset(&sigs_msk,SIGSEGV);
#endif
sigaddset(&sigs_msk,SIGTERM);
/* if (!daemon_p) {
sigaddset(&sigs_msk,SIGQUIT);
} */
#if (TARGET==TARGET_LINUX)
pthread_sigmask(SIG_BLOCK,&sigs_msk,NULL);
#endif
#if DEBUG>0
{
int err;
/* Generate a key for storing our thread id's */
if ((err=pthread_key_create(&thrid_key, NULL)) != 0) {
log_error("pthread_key_create failed: %s",strerror(err));
_exit(1);
}
}
#endif
{
#if DEBUG>0
int thrdsucc=1;
# define thrdfail (thrdsucc=0)
#else
# define thrdfail
#endif
if(start_servstat_thread()) thrdfail;
#if (TARGET==TARGET_LINUX)
if (!global.strict_suid) {
if (!run_as(global.run_as)) {
_exit(1);
}
}
#endif
if (stat_pipe)
if(start_stat_sock()) thrdfail;
start_dns_servers();
#if DEBUG>0
if(thrdsucc) {
DEBUG_MSG("All threads started successfully.\n");
}
#endif
#undef thrdfail
}
#if (TARGET==TARGET_LINUX) && !defined(THREADLIB_NPTL)
pthread_sigmask(SIG_BLOCK,&sigs_msk,NULL);
waiting=1;
#endif
{
int err;
while ((err=sigwait(&sigs_msk,&sig))) {
if (err!=EINTR) {
log_error("sigwait failed: %s",strerror(err));
sig=0;
break;
}
}
}
if(sig) DEBUG_MSG("Signal %i caught.\n",sig);
write_disk_cache();
destroy_cache();
if(sig) log_warn("Caught signal %i. Exiting.",sig);
if (sig==SIGSEGV || sig==SIGILL || sig==SIGBUS)
crash_msg("This is a fatal signal probably triggered by a bug.");
if (ping_isocket!=-1)
close(ping_isocket);
#ifdef ENABLE_IPV6
if (ping6_isocket!=-1)
close(ping6_isocket);
#endif
/* Close and delete the status socket */
if(stat_pipe) close(stat_sock);
if (sock_path && unlink(sock_path))
log_warn("Failed to unlink %s: %s",sock_path, strerror(errno));
free_rng();
#if DEBUG>0
if (debug_p && global.daemon)
if(fclose(dbg_file)<0) {
log_warn("Could not close debug file: %s", strerror(errno));
}
#endif
_exit(0);
}

309
app/src/main/jni/pdnsd/src/make_rr_types_h.pl Normal file
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@ -0,0 +1,309 @@
#!/usr/bin/perl -w
# This Perl script is used to generate rr_types.h, using rr_types.in as input.
#
# Copyright (C) 2010, 2011 Paul A. Rombouts
#
# This file is part of the pdnsd package.
#
use strict;
use integer;
print << "END-OF-TEXT";
/* This file was generated by running '$0 @ARGV'.
Modifications to this file may be lost the next time it is automatically
regenerated.
*/
END-OF-TEXT
my %valdic;
my %namedic;
my %classdic;
my %muset;
my $nrr=0;
my $nmu=0;
my $minval;
my $maxval;
#my $maxmuval;
while(<>) {
if(/\S/ && !/^\s*\#/) {
if(/^\s*(?:([*+-])\s*)?([\w-]+)\s+(\d+)\s+(?:\((\w+)\))?/) {
my $mu = $1; my $name=$2; my $val=$3+0; my $class=$4;
$name =~ s/-/_/g;
if(defined($valdic{$name})) {warn "The name \"$name\" does not have a unique value.\n"}
if(defined($namedic{$val})) {warn "The value \"$val\" does not have a unique name.\n"}
$valdic{$name}=$val; $namedic{$val}=$name; $classdic{$val}=$class if defined($class);
if(defined($mu)) {
if($mu eq '-') {next}
$muset{$val}= 1;
++$nmu;
#if(!defined($maxmuval) || $val>$maxmuval) {$maxmuval=$val}
}
else {$muset{$val}= 0}
++$nrr;
if(!defined($minval) || $val<$minval) {$minval=$val}
if(!defined($maxval) || $val>$maxval) {$maxval=$val}
}
else {die "Can't find name-value pair in following line:\n$_\n"}
}
}
defined($minval) or die "No values defined.\n";
if($nrr>255) {warn "Warning: total number of cache-able RR types is greater than 255.\n"}
print << 'END-OF-TEXT';
/* rr_types.h - A header file with names & descriptions of
all rr types known to pdnsd
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2007, 2010, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef _RR_TYPES_H_
#define _RR_TYPES_H_
#include <config.h>
END-OF-TEXT
print "#define T_MIN $minval\n";
foreach my $name (sort {$valdic{$a} <=> $valdic{$b} } (keys %valdic)) {
printf("#define %-12s %2d\n", "T_$name", $valdic{$name});
}
print "#define T_MAX $maxval\n";
print("\n/* T_MAX - T_MIN + 1 */\n","#define T_NUM ",$maxval+1-$minval,"\n");
#print("\n/* Largest most frequently used type value. */\n","#define T_MAXMU $maxmuval\n");
print("\n/* Number of most frequently used rr types. */\n","#define NRRMU $nmu\n");
print("\n/* Number of remaining rr types. */\n","#define NRREXT ",$nrr-$nmu,"\n");
print("\n/* NRRMU + NRREXT */\n","#define NRRTOT $nrr\n");
print << 'END-OF-TEXT';
/* Lookup table for converting rr type values to internally used indices. */
extern const unsigned short int rrlkuptab[T_NUM];
#if DEFINE_RR_TYPE_ARRAYS && !defined(CLIENT_ONLY)
const unsigned short int rrlkuptab[T_NUM] = {
END-OF-TEXT
my @rrtpval=();
for(my $val=$minval, my $i=0, my $j=$nmu, my $k=$nrr; $val<=$maxval; ++$val) {
my $idx;
if(defined($muset{$val})) {
if($muset{$val}) {
$idx = $i++;
}
else {
$idx = $j++;
}
$rrtpval[$idx]=$val;
}
else {
$idx = $k++;
}
printf('%4d', $idx);
if(defined($namedic{$val})) {
print " /* $namedic{$val} */";
}
print ',' if $val<$maxval;
print "\n";
}
#print << 'END-OF-TEXT';
#};
##endif
#
#/* Table for converting internally used indices to rr type values.
# This is more or less the inverse of the rrlkuptab[] mapping. */
#extern const unsigned short int rrtpval[NRRTOT];
##if DEFINE_RR_TYPE_ARRAYS && !defined(CLIENT_ONLY)
#const unsigned short int rrtpval[NRRTOT] = {
#END-OF-TEXT
#for(my $i=0; $i<$nrr; ++$i) {
# if($i ==0) {
# print " /* Most frequently used types. */\n";
# }
# else {
# print ",\n";
# }
# print " /* Remaining (less frequently used) types. */\n"
# if $i == $nmu;
# my $val= $rrtpval[$i];
# print(" ",defined($namedic{$val})? "T_$namedic{$val}": $val);
#}
print << 'END-OF-TEXT';
};
#endif
/* List of most frequently used RR types in ascending order. */
extern const unsigned short int rrmuiterlist[NRRMU];
#if DEFINE_RR_TYPE_ARRAYS && !defined(CLIENT_ONLY)
const unsigned short int rrmuiterlist[NRRMU] = {
END-OF-TEXT
for(my $val=$minval, my $i=0; $val<=$maxval; ++$val) {
if(defined($muset{$val}) && $muset{$val}) {
print ",\n" if $i++;
print(" ",defined($namedic{$val})? "T_$namedic{$val}": $val);
}
}
print << 'END-OF-TEXT';
};
#endif
/* List of the cache-able RR types in ascending order. */
extern const unsigned short int rrcachiterlist[NRRTOT];
#if DEFINE_RR_TYPE_ARRAYS
const unsigned short int rrcachiterlist[NRRTOT] = {
END-OF-TEXT
for(my $val=$minval, my $i=0; $val<=$maxval; ++$val) {
if(defined($muset{$val})) {
print ",\n" if $i++;
print(" ",defined($namedic{$val})? "T_$namedic{$val}": $val);
}
}
print << 'END-OF-TEXT';
};
#endif
/* Optimized getrrset macros for fixed rr types. */
END-OF-TEXT
for(my $val=$minval, my $i=0, my $j=0; $val<=$maxval; ++$val) {
if(defined($muset{$val})) {
my $name = $namedic{$val};
my $mdef;
if($muset{$val}) {
$mdef= "GET_RRSMU(cent,$i)";
++$i;
}
else {
$mdef= "GET_RRSEXT(cent,$j)";
++$j;
}
printf("#define %-25s %s\n", "getrrset_$name(cent)", $mdef)
if defined($name);
}
}
print << 'END-OF-TEXT';
/* have_rr macros for fixed rr types. */
END-OF-TEXT
for(my $val=$minval, my $i=0, my $j=0; $val<=$maxval; ++$val) {
my $name = $namedic{$val};
my $mdef = '0';
if(defined($muset{$val})) {
if($muset{$val}) {
$mdef= "HAVE_RRMU(cent,$i)";
++$i;
}
else {
$mdef= "HAVE_RREXT(cent,$j)";
++$j;
}
}
printf("#define %-25s %s\n", "have_rr_$name(cent)", $mdef)
if defined($name);
}
print << 'END-OF-TEXT';
/* These macros specify which RR types are cached by pdnsd. */
END-OF-TEXT
for(my $val=$minval; $val<=$maxval; ++$val) {
if(defined($muset{$val})) {
my $name = $namedic{$val};
printf("#define IS_CACHED_%-10s 1\n", defined($name)? $name: "TYPE$val")
}
}
print << 'END-OF-TEXT';
/* Array indices for most frequently used rr types. */
END-OF-TEXT
for(my $val=$minval, my $i=0; $val<=$maxval; ++$val) {
if(defined($muset{$val}) && $muset{$val}) {
printf("#define %-18s %2d\n", "RRMUINDEX_$namedic{$val}", $i)
if defined($namedic{$val});
++$i;
}
}
print << 'END-OF-TEXT';
/* Table of rr names. */
extern const char *const rrnames[T_NUM];
#if DEFINE_RR_TYPE_ARRAYS
const char *const rrnames[T_NUM] = {
END-OF-TEXT
for(my $val=$minval; $val<=$maxval; ++$val) {
my $name = $namedic{$val};
print(' "', defined($name)? $name: "TYPE$val", '"');
print ',' if $val<$maxval;
print "\n";
}
print << 'END-OF-TEXT';
};
#endif
/* Structure for rr information */
struct rr_infos {
unsigned short class; /* class (values see below) */
unsigned short excludes; /* relations to other classes.
Mutual exclusion is marked by or'ing the
respective RRCL value in this field.
Exclusions should be symmetric. */
};
/* Class values */
#define RRCL_ALIAS 1 /* for CNAMES, conflicts with RRCL_RECORD */
#define RRCL_RECORD 2 /* normal direct record */
#define RRCL_IDEM 4 /* types that conflict with no others (MX, CNAME, ...) */
#define RRCL_PTR 8 /* PTR */
/* Standard excludes for the classes */
#define RRX_ALIAS (RRCL_RECORD|RRCL_PTR)
#define RRX_RECORD (RRCL_ALIAS|RRCL_PTR)
#define RRX_IDEM 0
#define RRX_PTR (RRCL_ALIAS|RRCL_RECORD)
/* There could be a separate table detailing the relationship of types, but this
* is slightly more flexible, as it allows a finer granularity of exclusion. Also,
* Membership in multiple classes could be added.
* Index by internally used RR-set indices, not RR type values!
*/
extern const struct rr_infos rr_info[NRRTOT];
#if DEFINE_RR_TYPE_ARRAYS && !defined(CLIENT_ONLY)
const struct rr_infos rr_info[NRRTOT] = {
END-OF-TEXT
for(my $i=0; $i<$nrr; ++$i) {
print ",\n" if $i;
my $val=$rrtpval[$i];
my $class = (defined($classdic{$val})? $classdic{$val}: 'IDEM');
printf(' %-16s %-15s %s',"{RRCL_$class,", "RRX_$class}", defined($namedic{$val})?"/* $namedic{$val} */":"");
}
print << 'END-OF-TEXT';
};
#endif
int rr_tp_byname(char *name);
const char *loc2str(const void *binary, char *ascii, size_t asclen);
#endif
END-OF-TEXT
exit

363
app/src/main/jni/pdnsd/src/netdev.c Normal file
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/* netdev.c - Test network devices for existence and status
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2002, 2003, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
/*
* Portions are under the following copyright and taken from FreeBSD
* (clause 3 deleted as it no longer applies):
*
* Copyright (c) 1982, 1986, 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)if.h 8.1 (Berkeley) 6/10/93
* $FreeBSD: src/sys/net/if.h,v 1.58.2.1 2000/05/05 13:37:04 jlemon Exp $
*/
#include <config.h>
#include "ipvers.h"
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <netdb.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include "helpers.h"
#include "netdev.h"
#include "error.h"
#if (TARGET==TARGET_BSD)
/* Taken from FreeBSD net/if.h rev. 1.58.2.1 */
#define SIZEOF_ADDR_IFREQ(ifr) \
((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \
(sizeof(struct ifreq) - sizeof(struct sockaddr) + \
(ifr).ifr_addr.sa_len) : sizeof(struct ifreq))
#elif (TARGET==TARGET_CYGWIN)
#define SIZEOF_ADDR_IFREQ(ifr) (sizeof(struct sockaddr))
#endif
#define MAX_SOCKETOPEN_ERRS 10
static volatile unsigned long socketopen_errs=0;
/*
* Portions of the following code are Linux/FreeBSD specific.
* Please write interface-detection routines for other flavours of Unix if you can and want.
*/
#if (TARGET==TARGET_LINUX) || (TARGET==TARGET_BSD) || (TARGET==TARGET_CYGWIN)
# if (TARGET==TARGET_LINUX)
static volatile unsigned long isdn_errs=0;
# ifdef ISDN_SUPPORT
/*
* Test the status of an ippp interface. Taken from the isdn4k-utils (thanks!) and adapted
* by me (I love free software!)
* This will not work with older kernels.
* If your kernel is too old or too new, just try to get the status as uptest=exec command
* This will work, although slower.
*/
# include <linux/isdn.h>
int statusif(char *name)
{
isdn_net_ioctl_phone phone;
int isdninfo,rc=0;
if ((isdninfo = open("/dev/isdninfo", O_RDONLY))<0) {
if (++isdn_errs<=2) {
log_warn("Could not open /dev/isdninfo for uptest: %s",strerror(errno));
}
return 0;
}
strncp(phone.name, name, sizeof(phone.name));
if (ioctl(isdninfo, IIOCNETGPN, &phone)==0)
rc=1;
close(isdninfo);
return rc;
}
# endif
/*
* Test whether the network interface specified in ifname and its
* associated device specified in devname have locks owned by the
* same process.
*/
int dev_up(char *ifname, char *devname)
{
FILE *fd;
int pidi, pidd, rv;
{
char path[sizeof("/var/run/.pid")+strlen(ifname)];
stpcpy(stpcpy(stpcpy(path,"/var/run/"),ifname),".pid");
if ((fd=fopen(path, "r")) == NULL )
return 0;
if (fscanf(fd, "%d", &pidi) != 1 ) {
fclose(fd) ;
return 0;
}
fclose(fd);
}
{
char path[sizeof("/var/lock/LCK..")+strlen(devname)];
stpcpy(stpcpy(path,"/var/lock/LCK.."),devname);
if ((fd=fopen(path, "r")) == NULL)
return 0;
if (fscanf(fd, "%d", &pidd) != 1) {
fclose(fd);
return 0;
}
fclose(fd);
}
if (pidi != pidd)
return 0;
/* Test whether pppd is still alive */
rv=kill(pidi,0);
return (rv==0 || (rv==-1 && errno!=ESRCH));
}
# endif /*(TARGET==TARGET_LINUX)*/
/*
* Test whether the network device specified in devname is up and
* running (returns -1) or non-existent, down or not-running (returns 0)
*
* Note on IPv6-Comptability: rfc2133 requires all IPv6 implementation
* to be backwards-compatible to IPv4 in means of permitting socket(PF_INET,...)
* and similar. So, I don't put code here for both IPv4 and IPv6, since
* I use that socket only for ioctls. If somebody notices incompatabilities,
* please notify me.
*/
int if_up(char *devname)
{
int sock;
struct ifreq ifr;
# if (TARGET==TARGET_LINUX)
unsigned int devnamelen=strlen(devname);
if (devnamelen>4 && devnamelen<=6 && strncmp(devname,"ippp",4)==0) {
/* This function didn't manage the interface uptest correctly. Thanks to
* Joachim Dorner for pointing out.
* The new code (statusif()) was shamelessly stolen from isdnctrl.c of the
* isdn4k-utils. */
# ifdef ISDN_SUPPORT
return statusif(devname);
# else
if (isdn_errs++==0) {
log_warn("An ippp? device was specified for uptest, but pdnsd was compiled without ISDN support.");
log_warn("The uptest result will be wrong.");
}
# endif
/* If it doesn't match our rules for isdn devices, treat as normal if */
}
# endif
if ((sock=socket(PF_INET,SOCK_DGRAM, IPPROTO_UDP))==-1) {
if(++socketopen_errs<=MAX_SOCKETOPEN_ERRS) {
log_warn("Could not open socket in if_up(): %s",strerror(errno));
}
return 0;
}
strncp(ifr.ifr_name,devname,IFNAMSIZ);
if (ioctl(sock,SIOCGIFFLAGS,&ifr)==-1) {
close(sock);
return 0;
}
close(sock);
return (ifr.ifr_flags&IFF_UP) && (ifr.ifr_flags&IFF_RUNNING);
}
# if (TARGET==TARGET_LINUX)
# ifdef ENABLE_IPV6
#define MAX_IF_INET6_OPEN_ERRS 10
static volatile unsigned long if_inet6_open_errs=0;
# endif
int is_local_addr(pdnsd_a *a)
{
int res=0;
# ifdef ENABLE_IPV4
if (run_ipv4) {
int i,sock;
struct ifreq ifr;
if ((sock=socket(PF_INET,SOCK_DGRAM, IPPROTO_UDP))==-1) {
if(++socketopen_errs<=MAX_SOCKETOPEN_ERRS) {
log_warn("Could not open socket in is_local_addr(): %s",strerror(errno));
}
return 0;
}
for (i=1;i<255;i++) {
ifr.ifr_ifindex=i;
if (ioctl(sock,SIOCGIFNAME,&ifr)==-1) {
/* There may be gaps in the interface enumeration, so just continue */
continue;
}
if (ioctl(sock,SIOCGIFADDR, &ifr)==-1) {
continue;
}
if (((struct sockaddr_in *)(&ifr.ifr_addr))->sin_addr.s_addr==a->ipv4.s_addr) {
res=1;
break;
}
}
close(sock);
}
# endif
# ifdef ENABLE_IPV6
ELSE_IPV6 {
char buf[40];
FILE *f;
struct in6_addr b;
/* the interface configuration and information retrieval is obiously currently done via
* rt-netlink sockets. I think it is relatively likely to change in an incompatible way the
* Linux kernel (there seem to be some major changes for 2.4).
* Right now, I just analyze the /proc/net/if_inet6 entry. This may not be the fastest, but
* should work and is easy to adapt should the format change. */
if (!(f=fopen("/proc/net/if_inet6","r"))) {
if(++if_inet6_open_errs<=MAX_IF_INET6_OPEN_ERRS) {
log_warn("Could not open /proc/net/if_inet6 in is_local_addr(): %s",strerror(errno));
}
return 0;
}
/* The address is at the start of the line. We just read 32 characters and insert a ':' 7
* times. Such, we can use inet_pton conveniently. More portable, that. */
for(;;) {
int i,ch; char *p=buf;
for (i=0;i<32;i++) {
if(i && i%4==0) *p++ = ':';
if ((ch=fgetc(f))==EOF)
goto fclose_return; /* we are at the end of the file and haven't found anything.*/
if(ch=='\n') goto nextline;
*p++ = ch;
}
*p=0;
if (inet_pton(AF_INET6,buf,&b) >0) {
if (IN6_ARE_ADDR_EQUAL(&b,&a->ipv6)) {
res=1;
goto fclose_return;
}
}
do {
if ((ch=fgetc(f))==EOF) goto fclose_return;
} while(ch!='\n');
nextline:;
}
fclose_return:
fclose(f);
}
# endif
return res;
}
# else /*(TARGET==TARGET_BSD) || (TARGET==TARGET_CYGWIN)*/
#define MAX_SIOCGIFCONF_ERRS 4
static volatile unsigned long siocgifconf_errs=0;
int is_local_addr(pdnsd_a *a)
{
int retval=0, sock, cnt;
struct ifconf ifc;
char buf[2048];
if ((sock=socket(PF_INET,SOCK_DGRAM, IPPROTO_UDP))==-1) {
if(++socketopen_errs<=MAX_SOCKETOPEN_ERRS) {
log_warn("Could not open socket in is_local_addr(): %s",strerror(errno));
}
return 0;
}
ifc.ifc_len=sizeof(buf);
ifc.ifc_buf=buf;
if (ioctl(sock,SIOCGIFCONF,&ifc)==-1) {
if(++siocgifconf_errs<=MAX_SIOCGIFCONF_ERRS) {
log_warn("ioctl() call with request SIOCGIFCONF failed in is_local_addr(): %s",strerror(errno));
}
goto close_sock_return;
}
cnt=0;
while(cnt+sizeof(struct ifreq)<=ifc.ifc_len) {
struct ifreq *ir= (struct ifreq *)(buf+cnt);
cnt += SIZEOF_ADDR_IFREQ(*ir);
if (cnt>ifc.ifc_len)
break;
if (SEL_IPVER(ir->ifr_addr.sa_family==AF_INET &&
((struct sockaddr_in *)&ir->ifr_addr)->sin_addr.s_addr==a->ipv4.s_addr,
ir->ifr_addr.sa_family==AF_INET6 &&
IN6_ARE_ADDR_EQUAL(&((struct sockaddr_in6 *)&ir->ifr_addr)->sin6_addr,
&a->ipv6)))
{
retval=1;
break;
}
}
close_sock_return:
close(sock);
return retval;
}
# endif
#else
# error "Huh. No OS macro defined."
#endif

32
app/src/main/jni/pdnsd/src/netdev.h Normal file
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@ -0,0 +1,32 @@
/* netdev.h - Test network devices for existence and status
Copyright (C) 2000 Thomas Moestl
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef _NETDEV_H_
#define _NETDEV_H_
#include <config.h>
#include "ipvers.h"
int if_up(char *devname);
int dev_up(char *ifname, char *devname);
int is_local_addr(pdnsd_a *a);
#endif

18
app/src/main/jni/pdnsd/src/pdnsd-ctl/Makefile.am Normal file
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@ -0,0 +1,18 @@
sbin_PROGRAMS = pdnsd-ctl
pdnsd_ctl_SOURCES = pdnsd-ctl.c
pdnsd_ctl_LDADD = rr_types.o
pdnsd_ctl_DEPENDENCIES = rr_types.o
# These are Symlinks we want to have in the package
#EXTRA_DIST = rr_types.h
pdnsd-ctl.o rr_types.o: ../rr_types.h
../rr_types.h: ../make_rr_types_h.pl ../rr_types.in
perl ../make_rr_types_h.pl ../rr_types.in > ../rr_types.h
rr_types.o: %.o: ../%.c
$(COMPILE) -DCLIENT_ONLY -c $<

470
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@ -0,0 +1,470 @@
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END { if (nonempty) { for (i in files) print i; }; }'`; \
mkid -fID $$unique
tags: TAGS
TAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) \
$(TAGS_FILES) $(LISP)
set x; \
here=`pwd`; \
list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
unique=`for i in $$list; do \
if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
done | \
$(AWK) '{ files[$$0] = 1; nonempty = 1; } \
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if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
test -n "$$unique" || unique=$$empty_fix; \
if test $$# -gt 0; then \
$(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
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$(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
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CTAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) \
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topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
list='$(DISTFILES)'; \
dist_files=`for file in $$list; do echo $$file; done | \
sed -e "s|^$$srcdirstrip/||;t" \
-e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
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check-am: all-am
check: check-am
all-am: Makefile $(PROGRAMS)
installdirs:
for dir in "$(DESTDIR)$(sbindir)"; do \
test -z "$$dir" || $(MKDIR_P) "$$dir"; \
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install-exec: install-exec-am
install-data: install-data-am
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install-am: all-am
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distclean-generic:
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clean: clean-am
clean-am: clean-generic clean-sbinPROGRAMS mostlyclean-am
distclean: distclean-am
-rm -rf ./$(DEPDIR)
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# These are Symlinks we want to have in the package
#EXTRA_DIST = rr_types.h
pdnsd-ctl.o rr_types.o: ../rr_types.h
../rr_types.h: ../make_rr_types_h.pl ../rr_types.in
perl ../make_rr_types_h.pl ../rr_types.in > ../rr_types.h
rr_types.o: %.o: ../%.c
$(COMPILE) -DCLIENT_ONLY -c $<
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

799
app/src/main/jni/pdnsd/src/pdnsd-ctl/pdnsd-ctl.c Normal file
View File

@ -0,0 +1,799 @@
/* pdnsd-ctl.c - Control pdnsd through a pipe
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_ALLOCA_H
#include <alloca.h>
#endif
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include <ctype.h>
#include <stddef.h> /* for offsetof */
#include "../helpers.h"
#include "../status.h"
#include "../conff.h"
#include "../list.h"
#include "../dns.h"
#include "../rr_types.h"
#include "../cache.h"
#if !defined(HAVE_ALLOCA) && !defined(alloca)
#define alloca malloc
#endif
#if defined(HAVE_STRUCT_IN6_ADDR) && defined(HAVE_INET_PTON)
# define ALLOW_AAAA IS_CACHED_AAAA
#else
# define ALLOW_AAAA 0
#endif
static short int verbose=1;
typedef struct {
char *name;
int val;
} cmd_s;
#define CMD_LIST_RRTYPES (CTL_MAX+1)
#define CMD_HELP (CTL_MAX+2)
#define CMD_VERSION (CTL_MAX+3)
static const cmd_s top_cmds[]={
{"help",CMD_HELP},{"version",CMD_VERSION},{"list-rrtypes",CMD_LIST_RRTYPES},
{"status",CTL_STATS},{"server",CTL_SERVER},{"record",CTL_RECORD},
{"source",CTL_SOURCE},{"add",CTL_ADD},{"neg",CTL_NEG},
{"config",CTL_CONFIG},{"include",CTL_INCLUDE},{"eval",CTL_EVAL},
{"empty-cache",CTL_EMPTY}, {"dump",CTL_DUMP},
{NULL,0}
};
static const cmd_s server_cmds[]= {{"up",CTL_S_UP},{"down",CTL_S_DOWN},{"retest",CTL_S_RETEST},{NULL,0}};
static const cmd_s record_cmds[]= {{"delete",CTL_R_DELETE},{"invalidate",CTL_R_INVAL},{NULL,0}};
static const cmd_s onoff_cmds[]= {{"off",0},{"on",1},{NULL,0}};
static const cmd_s rectype_cmds[]= {{"a",T_A},
#if ALLOW_AAAA
{"aaaa",T_AAAA},
#endif
{"ptr",T_PTR},{"cname",T_CNAME},{"mx",T_MX},{"ns",T_NS},{NULL,0}};
static const char version_message[] =
"pdnsd-ctl, version pdnsd-" VERSION "\n\n";
static const char license_statement[] =
"Copyright (C) 2000, 2001 Thomas Moestl\n"
"Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011 Paul A. Rombouts\n\n"
"This program is part of the pdnsd package.\n\n"
"pdnsd is free software; you can redistribute it and/or modify\n"
"it under the terms of the GNU General Public License as published by\n"
"the Free Software Foundation; either version 3 of the License, or\n"
"(at your option) any later version.\n\n"
"pdnsd is distributed in the hope that it will be useful,\n"
"but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
"GNU General Public License for more details.\n\n"
"You should have received a copy of the GNU General Public License\n"
"along with pdsnd; see the file COPYING. If not, see\n"
"<http://www.gnu.org/licenses/>.\n";
static const char *const help_messages[] =
{
"Usage: pdnsd-ctl [-c cachedir] [-q] <command> [arguments]\n\n"
"Command-line options:\n"
"-c\tcachedir\n\tSet the cache directory to cachedir (must match pdnsd setting).\n"
"\tThe default is '" CACHEDIR "'.\n"
"-q\n\tBe quiet unless output is specified by command or something goes wrong.\n\n"
"Commands and needed arguments are:\n"
"help\t[no arguments]\n\tPrint this help.\n"
"version\t[no arguments]\n\tPrint version and license info.\n",
"status\t[no arguments]\n\tPrint pdnsd's status.\n",
"server\t(index|label)\t(up|down|retest)\t[dns1[,dns2[,...]]]\n"
"\tSet the status of the server with the given index to up or down, or\n"
"\tforce a retest. The index is assigned in the order of definition in\n"
"\tpdnsd.conf starting with 0. Use the status command to see the indexes.\n"
"\tYou can specify the label of a server (that matches the label option)\n"
"\tinstead of an index to make this easier.\n"
"\tYou can specify all instead of an index to perform the action for all\n"
"\tservers registered with pdnsd.\n"
"\tAn optional third argument can be given consisting of a list of IP\n"
"\taddresses separated by commas or spaces. This list will replace the\n"
"\taddresses of name servers used by pdnsd for the given server section.\n"
"\tThis feature is useful for run-time configuration of pdnsd with dynamic\n"
"\tDNS data in scripts called by ppp or DHCP clients. The last argument\n"
"\tmay also be an empty string, which causes existing IP addresses to be\n"
"\tremoved and the corresponding server section to become inactive.\n",
"record\tname\t(delete|invalidate)\n"
"\tDelete or invalidate the record of the given domain if it is in the\n"
"\tcache.\n",
"source\tfn\towner\t[ttl]\t[(on|off)]\t[noauth]\n"
"\tLoad a hosts-style file. Works like using the pdnsd source\n"
"\tconfiguration section.\n"
"\tOwner and ttl are used as in the source section. ttl has a default\n"
"\tof 900 (it does not need to be specified). The next to last argument\n"
"\tcorresponds to the serve_aliases option, and is off by default.\n"
"\tnoauth is used to make the domains non-authoritative (please\n"
"\tconsult the pdnsd manual for what that means).\n"
"\tfn is the name of the file, which must be readable by pdnsd.\n",
"add\ta\taddr\tname\t[ttl]\t[noauth]\n"
#if ALLOW_AAAA
"add\taaaa\taddr\tname\t[ttl]\t[noauth]\n"
#endif
"add\tptr\thost\tname\t[ttl]\t[noauth]\n"
"add\tcname\thost\tname\t[ttl]\t[noauth]\n"
"add\tmx\thost\tname\tpref\t[ttl]\t[noauth]\n"
"add\tns\thost\tname\t[ttl]\t[noauth]\n"
"\tAdd a record of the given type to the pdnsd cache, replacing existing\n"
"\trecords for the same name and type. The 2nd argument corresponds\n"
"\tto the value of the option in the rr section that is named like\n"
"\tthe first argument. The addr argument may be a list of IP addresses,\n"
"\tseparated by commas or white space. The ttl is optional, the default is\n"
"\t900 seconds. noauth is used to make the domains non-authoritative.\n"
"\tIf you want no other record than the newly added in the cache, do\n"
"\tpdnsdctl record <name> delete\n"
"\tbefore adding records.\n",
"neg\tname\t[type]\t[ttl]\n"
"\tAdd a negatively cached record to pdnsd's cache, replacing existing\n"
"\trecords for the same name and type. If no type is given, the whole\n"
"\tdomain is cached negatively. For negatively cached records, errors are\n"
"\timmediately returned on a query, without querying other servers first.\n"
"\tThe ttl is optional, the default is 900 seconds.\n",
"config\t[filename]\n"
"\tReload pdnsd's configuration file.\n"
"\tThe config file must be owned by the uid that pdnsd had when it was\n"
"\tstarted, and be readable by pdnsd's run_as uid. If no file name is\n"
"\tspecified, the config file used at start up is reloaded.\n",
"include\tfilename\n"
"\tParse the given file as an include file, which may contain the same\n"
"\ttype of sections as a config file, expect for global and server\n"
"\tsections, which are not allowed. This command can be used to add data\n"
"\tto the cache without reconfiguring pdnsd.\n",
"eval\tstring\n"
"\tParse string as if it were part of pdnsd's configuration file.\n"
"\tThe string should hold one or more complete configuration sections,\n"
"\tbut no global and server sections, which are not allowed.\n"
"\tIf multiple strings are given, they will be joined using newline chars\n"
"\tand parsed together.\n",
"empty-cache\t[[+|-]name ...]\n"
"\tDelete all entries in the cache matching include/exclude rules.\n"
"\tIf no arguments are provided, the cache is completely emptied,\n"
"\tfreeing all existing entries. This also removes \"local\" records,\n"
"\tas defined by the config file. To restore local records, run\n"
"\t\"pdnsd-ctl config\" or \"pdnsd-ctl include filename\" immediately\n"
"\tafterwards.\n"
"\tIf one or more arguments are provided, these are interpreted as \n"
"\tinclude/exclude names. If an argument starts with a '+' the name is to\n"
"\tbe included. If an argument starts with a '-' it is to be excluded.\n"
"\tIf an argument does not begin with '+' or '-', a '+' is assumed.\n"
"\tIf the domain name of a cache entry ends in one of the names in the\n"
"\tlist, the first match will determine what happens. If the matching name\n"
"\tis to be included, the cache entry is deleted, otherwise it remains.\n"
"\tIf there are no matches, the default action is not to delete.\n",
"dump\t[name]\n"
"\tPrint information stored in the cache about name.\n"
"\tIf name begins with a dot and is not the root domain, information\n"
"\tabout the names in the cache ending in name (including name without\n"
"\tthe leading dot) will be printed. If name is missing, information about\n"
"\tall the names in the cache will be printed.\n",
"list-rrtypes\t[no arguments]\n"
"\tList available rr types for the neg command. Note that those are only\n"
"\tused for the neg command, not for add!\n"
};
#define NUM_HELP_MESSAGES (sizeof(help_messages)/sizeof(char*))
/* Open connection to control socket and send command code.
If successful, open_sock returns a file descriptor for the new socket,
otherwise the program is aborted.
*/
static int open_sock(const char *cache_dir, uint16_t cmd)
{
struct sockaddr_un *sa;
unsigned int sa_len;
int sock;
uint16_t nc;
if ((sock=socket(PF_UNIX,SOCK_STREAM,0))==-1) {
perror("Error: could not open socket");
exit(2);
}
sa_len = (offsetof(struct sockaddr_un, sun_path) + strlitlen("/pdnsd.status") + strlen(cache_dir));
sa=(struct sockaddr_un *)alloca(sa_len+1);
sa->sun_family=AF_UNIX;
stpcpy(stpcpy(sa->sun_path,cache_dir),"/pdnsd.status");
if (connect(sock,(struct sockaddr *)sa,sa_len)==-1) {
fprintf(stderr,"Error: could not open socket %s: %s\n",sa->sun_path,strerror(errno));
close(sock);
exit(2);
}
if(verbose) printf("Opening socket %s\n",sa->sun_path);
/* Send command code */
nc=htons(cmd|CTL_CMDVERNR); /* Add magic number, convert to network byte order. */
if (write(sock,&nc,sizeof(nc))!=sizeof(nc)) {
perror("Error: could not write command code");
close(sock);
exit(2);
}
return sock;
}
static void send_long(int fd,uint32_t cmd)
{
uint32_t nc=htonl(cmd);
if (write(fd,&nc,sizeof(nc))!=sizeof(nc)) {
perror("Error: could not write long");
close(fd);
exit(2);
}
}
static void send_short(int fd,uint16_t cmd)
{
uint16_t nc=htons(cmd);
if (write(fd,&nc,sizeof(nc))!=sizeof(nc)) {
perror("Error: could not write short");
close(fd);
exit(2);
}
}
#define MAXSENDSTRLEN 0xfffe
static void send_string(int fd, const char *s)
{
if(s) {
size_t len=strlen(s);
if(len>MAXSENDSTRLEN) {
fprintf(stderr,"Error: send_string: string length (%lu) exceeds maximum (%u).\n",
(unsigned long)len, MAXSENDSTRLEN);
close(fd);
exit(2);
}
send_short(fd,len);
if (write_all(fd,s,len)!=len) {
perror("Error: could not write string");
close(fd);
exit(2);
}
}
else
send_short(fd, ~0);
}
static uint16_t read_short(int fd)
{
ssize_t err;
uint16_t nc;
if ((err=read(fd,&nc,sizeof(nc)))!=sizeof(nc)) {
fprintf(stderr,"Error: could not read short: %s\n",err<0?strerror(errno):"unexpected EOF");
close(fd);
exit(2);
}
return ntohs(nc);
}
/* copy data from file descriptor fd to file stream out until EOF
or error is encountered.
*/
static ssize_t copymsgtofile(int fd, FILE* out)
{
ssize_t n,ntot=0;
char buf[1024];
while ((n=read(fd,buf,sizeof(buf)))>0)
ntot+=fwrite(buf,1,n,out);
if(n<0)
return n;
return ntot;
}
static int match_cmd(const char *cmd, const cmd_s cmds[])
{
int i;
for(i=0; cmds[i].name; ++i) {
if (strcasecmp(cmd,cmds[i].name)==0)
return cmds[i].val;
}
return -1;
}
int main(int argc, char *argv[])
{
char *cache_dir= CACHEDIR;
int rv=0;
{
int i;
char *arg;
for(i=1; i<argc && (arg=argv[i]) && *arg=='-'; ++i) {
if(!strcmp(arg,"-c")) {
if(++i<argc) {
cache_dir= argv[i];
}
else {
fprintf(stderr,"file name expected after -c option.\n");
goto print_try_pdnsd_ctl_help;
}
}
else if(!strcmp(arg,"-q")) {
verbose=0;
}
else {
fprintf(stderr,"Unknown option: %s\n",arg);
goto print_try_pdnsd_ctl_help;
}
}
argc -= i;
argv += i;
}
if (argc<1) {
fprintf(stderr,"No command specified.\n");
print_try_pdnsd_ctl_help:
fprintf(stderr,"Try 'pdnsd-ctl help' for available commands and options.\n");
exit(2);
} else {
int pf,acnt=0,cmd;
cmd=match_cmd(argv[0],top_cmds);
if(cmd==-1) {
fprintf(stderr,"Command not recognized: %s\n",argv[0]);
goto print_try_pdnsd_ctl_help;
}
switch (cmd) {
case CMD_HELP: {
int i;
fputs(version_message,stdout);
for(i=0; i<NUM_HELP_MESSAGES; ++i)
fputs(help_messages[i],stdout);
}
break;
case CMD_VERSION:
fputs(version_message,stdout);
fputs(license_statement,stdout);
break;
case CMD_LIST_RRTYPES: {
int i;
if (argc!=1)
goto wrong_args;
printf("Available RR types for the neg command:\n");
for (i=0; i<NRRTOT; ++i)
printf("%s\n",rrnames[rrcachiterlist[i]-T_MIN]);
}
break;
case CTL_STATS:
if (argc!=1)
goto wrong_args;
pf=open_sock(cache_dir, cmd);
goto copy_pf;
case CTL_SERVER: {
int server_cmd;
if (argc<3 || argc>4)
goto wrong_args;
acnt=2;
server_cmd=match_cmd(argv[2],server_cmds);
if(server_cmd==-1) goto bad_arg;
pf=open_sock(cache_dir, cmd);
send_string(pf,argv[1]);
send_short(pf,server_cmd);
send_string(pf,argc<4?NULL:argv[3]);
}
goto read_retval;
case CTL_RECORD: {
int record_cmd;
if (argc!=3)
goto wrong_args;
acnt=2;
record_cmd=match_cmd(argv[2],record_cmds);
if(record_cmd==-1) goto bad_arg;
pf=open_sock(cache_dir, cmd);
send_short(pf,record_cmd);
send_string(pf,argv[1]);
}
goto read_retval;
case CTL_SOURCE: {
long ttl;
int servaliases,flags;
if (argc<3 || argc>6)
goto wrong_args;
ttl=900;
flags=DF_LOCAL;
acnt=3;
if (argc==6 || (argc>=4 && isdigit(argv[3][0]))) {
char *endptr;
ttl=strtol(argv[3],&endptr,0);
if (*endptr)
goto bad_arg;
acnt++;
}
servaliases=0;
if (acnt<argc && (argc==6 || strcasecmp(argv[acnt], "noauth"))) {
servaliases=match_cmd(argv[acnt],onoff_cmds);
if(servaliases==-1) goto bad_arg;
acnt++;
}
if (acnt<argc) {
if (!strcasecmp(argv[acnt], "noauth"))
flags=0;
else
goto bad_arg;
}
pf=open_sock(cache_dir, cmd);
send_string(pf,argv[1]);
send_string(pf,argv[2]);
send_long(pf,ttl);
send_short(pf,servaliases);
send_short(pf,flags);
}
goto read_retval;
case CTL_ADD: {
long ttl;
int tp,flags,pref;
unsigned int nadr;
size_t adrsz, adrbufsz;
char *q;
if (argc<2) goto wrong_args;
acnt=1;
tp=match_cmd(argv[1],rectype_cmds);
if(tp==-1) goto bad_arg;
acnt=((tp==T_MX)?5:4);
if (argc<acnt || argc>acnt+2)
goto wrong_args;
ttl=900;
flags=DF_LOCAL;
pref=0;
if(tp==T_MX) {
char *endptr;
pref=strtol(argv[4],&endptr,0);
if (*endptr) {
acnt=4;
goto bad_arg;
}
}
if (acnt<argc && strcasecmp(argv[acnt],"noauth")) {
char *endptr;
ttl=strtol(argv[acnt],&endptr,0);
if (*endptr)
goto bad_arg;
acnt++;
}
if (acnt<argc && !strcasecmp(argv[acnt],"noauth")) {
flags=0;
acnt++;
}
if (acnt<argc)
goto bad_arg;
nadr=0; adrsz=0;
switch (tp) {
case T_A:
adrsz= sizeof(struct in_addr);
#if ALLOW_AAAA
goto count_addresses;
case T_AAAA:
adrsz= sizeof(struct in6_addr);
count_addresses:
#endif
/* first count the number of comma- or space-delimited address strings,
ignoring blank strings. */
for(q=argv[2];;) {
for(;;++q) {
if(!*q) goto finished_counting_addresses;
if(*q!=',' && !isspace(*q)) break;
}
do {
++q;
} while(*q && *q!=',' && !isspace(*q));
++nadr;
}
finished_counting_addresses:
if (!nadr) {
fprintf(stderr,"Empty IP list for 'add %s' command.\n", argv[1]);
exit(2);
}
break;
}
adrbufsz = nadr*adrsz;
{
/* Variable-size array for storing IP addresses. */
unsigned char adrbuf[adrbufsz] __attribute__((aligned));
switch (tp) {
case T_A:
#if ALLOW_AAAA
case T_AAAA:
#endif
{
/* Convert the address strings into binary addresses and
store them in adrbuf. */
unsigned char *adrp = adrbuf;
for(q=argv[2];;) {
char *p; size_t len;
for(;;++q) {
if(!*q) goto finished_converting_addresses;
if(*q!=',' && !isspace(*q)) break;
}
p=q;
do {
++q;
} while(*q && *q!=',' && !isspace(*q));
len = q-p;
{
char tmpbuf[len+1];
memcpy(tmpbuf,p,len);
tmpbuf[len]=0;
if(
#if ALLOW_AAAA
tp==T_AAAA? inet_pton(AF_INET6,tmpbuf,adrp)<=0:
#endif
!inet_aton(tmpbuf,(struct in_addr *)adrp))
{
fprintf(stderr,"Bad IP for 'add %s' command: %s\n",
argv[1],tmpbuf);
exit(2);
}
}
adrp += adrsz;
}
}
finished_converting_addresses:
break;
}
pf=open_sock(cache_dir, cmd);
send_short(pf,tp);
send_string(pf,argv[3]);
send_long(pf,ttl);
send_short(pf,flags);
switch (tp) {
case T_A:
#if ALLOW_AAAA
case T_AAAA:
#endif
send_short(pf,nadr);
if(write_all(pf,adrbuf,adrbufsz)!=adrbufsz) {
perror("Error: could not send IP address(es)");
close(pf);
exit(2);
}
break;
case T_MX:
send_short(pf,pref);
/* fall through */
case T_PTR:
case T_CNAME:
case T_NS:
send_string(pf,argv[2]);
break;
}
}
}
goto read_retval;
case CTL_NEG: {
long ttl;
int tp;
if (argc<2 || argc>4)
goto wrong_args;
tp=255;
ttl=900;
acnt=2;
if (argc==3) {
if (isdigit(argv[2][0])) {
char *endptr;
ttl=strtol(argv[2],&endptr,0);
if (*endptr)
goto bad_arg;
} else if ((tp=rr_tp_byname(argv[2]))==-1) {
goto bad_type;
}
} else if (argc==4) {
char *endptr;
if ((tp=rr_tp_byname(argv[2]))==-1)
goto bad_type;
ttl=strtol(argv[3],&endptr,0);
if (*endptr) {
acnt=3;
goto bad_arg;
}
}
pf=open_sock(cache_dir, cmd);
send_string(pf,argv[1]);
send_short(pf,tp);
send_long(pf,ttl);
}
goto read_retval;
case CTL_CONFIG:
if (argc>2)
goto wrong_args;
pf=open_sock(cache_dir, cmd);
send_string(pf,argc<2?NULL:argv[1]);
goto read_retval;
case CTL_INCLUDE:
if (argc!=2)
goto wrong_args;
pf=open_sock(cache_dir, cmd);
send_string(pf,argv[1]);
goto read_retval;
case CTL_EVAL: {
int i; size_t bufsz;
if (argc<2)
goto wrong_args;
bufsz=0;
for(i=1; i<argc; ++i)
bufsz += strlen(argv[i])+1;
if(bufsz>MAXSENDSTRLEN) {
fprintf(stderr,"Cannot send 'eval' command: "
"string length (%lu) exceeds maximum (%u).\n",
(unsigned long)bufsz, MAXSENDSTRLEN);
exit(2);
}
pf=open_sock(cache_dir, cmd);
send_short(pf,bufsz);
{
/* Variable-size array for storing the joined strings. */
char buf[bufsz];
char *p=buf;
for(i=1; i<argc; ++i) {
p=stpcpy(p,argv[i]);
*p++ = '\n';
}
if(write_all(pf,buf,bufsz)!=bufsz) {
perror("Error: could not write string");
close(pf);
exit(2);
}
}
}
goto read_retval;
case CTL_EMPTY: {
int i; size_t totsz=0;
for(i=1; i<argc; ++i)
totsz += strlen(argv[i])+1;
if(totsz>MAXSENDSTRLEN) {
fprintf(stderr,"Cannot send 'empty' command: "
"string length (%lu) exceeds maximum (%u).\n",
(unsigned long)totsz, MAXSENDSTRLEN);
exit(2);
}
pf=open_sock(cache_dir, cmd);
if(argc>1) {
send_short(pf,totsz);
for(i=1; i<argc; ++i) {
size_t sz=strlen(argv[i])+1;
if(write_all(pf,argv[i],sz)!=sz) {
perror("Error: could not write string");
close(pf);
exit(2);
}
}
}
else
send_short(pf,~0);
}
goto read_retval;
case CTL_DUMP:
if (argc>2)
goto wrong_args;
pf=open_sock(cache_dir, cmd);
send_string(pf,argc<2?NULL:argv[1]);
copy_pf:
if((rv=read_short(pf)))
goto retval_failed;
if(copymsgtofile(pf,stdout)<0) {
perror("Error while reading from socket");
close(pf);
exit(2);
}
goto close_pf;
read_retval:
if((rv=read_short(pf))) {
retval_failed:
fprintf(stderr,"Failed: ");
if(copymsgtofile(pf,stderr)<0)
fprintf(stderr,"(could not read error message from socket: %s)",strerror(errno));
fputc('\n',stderr);
}
close_pf:
if(close(pf)==-1)
perror("Couldn't close socket");
else if (rv==0 && verbose)
printf("Succeeded\n");
break;
wrong_args:
fprintf(stderr,"Wrong number of arguments for '%s' command.\n",argv[0]);
goto print_cmd_usage;
bad_arg:
fprintf(stderr,"Bad argument for '%s' command: %s\n",argv[0],argv[acnt]);
print_cmd_usage:
fprintf(stderr,"Usage:\n\n%s\n"
"Try 'pdnsd-ctl help' for a description of all available commands and options.\n",
help_messages[cmd]);
exit(2);
bad_type:
fprintf(stderr,"Bad (type) argument for '%s' command: %s\n"
"Run 'pdnsd-ctl list-rrtypes' for a list of available rr types.\n",
argv[0],argv[acnt]);
exit(2);
}
}
return rv;
}

51
app/src/main/jni/pdnsd/src/pdnsd_assert.h Normal file
View File

@ -0,0 +1,51 @@
/* This include file was added by Paul A. Rombouts.
I had terrible difficulties with cyclic dependencies of the include files
written by Thomas Moestl. The only way I knew how to break the cycle was to
put some declarations in a seperate file.
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2002 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef PDNSD_ASSERT_H
#define PDNSD_ASSERT_H
/* Originally in helpers.h */
/* format string checking for printf-like functions */
#ifdef __GNUC__
#define printfunc(fmt, firstva) __attribute__((__format__(__printf__, fmt, firstva)))
#else
#define printfunc(fmt, firstva)
#endif
void pdnsd_exit(void);
/*
* Assert macro, used in some places. For now, it should be always defined, not
* only in the DEBUG case, to be on the safe side security-wise.
*/
#define PDNSD_ASSERT(cond, msg) \
{ if (!(cond)) { \
log_error("%s:%d: %s", __FILE__, __LINE__, msg); \
pdnsd_exit(); \
} }
#endif

7
app/src/main/jni/pdnsd/src/rc/ArchLinux/Makefile.am Normal file
View File

@ -0,0 +1,7 @@
install-exec-local:
if [ "$(distribution)" = "ArchLinux" ] ; then \
$(mkinstalldirs) "$(DESTDIR)/etc/rc.d"; \
$(INSTALL_SCRIPT) $(srcdir)/pdnsd "$(DESTDIR)/etc/rc.d/pdnsd";\
fi

332
app/src/main/jni/pdnsd/src/rc/ArchLinux/Makefile.in Normal file
View File

@ -0,0 +1,332 @@
# Makefile.in generated by automake 1.11.1 from Makefile.am.
# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation,
# Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
@SET_MAKE@
VPATH = @srcdir@
pkgdatadir = $(datadir)/@PACKAGE@
pkgincludedir = $(includedir)/@PACKAGE@
pkglibdir = $(libdir)/@PACKAGE@
pkglibexecdir = $(libexecdir)/@PACKAGE@
am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
install_sh_DATA = $(install_sh) -c -m 644
install_sh_PROGRAM = $(install_sh) -c
install_sh_SCRIPT = $(install_sh) -c
INSTALL_HEADER = $(INSTALL_DATA)
transform = $(program_transform_name)
NORMAL_INSTALL = :
PRE_INSTALL = :
POST_INSTALL = :
NORMAL_UNINSTALL = :
PRE_UNINSTALL = :
POST_UNINSTALL = :
subdir = src/rc/ArchLinux
DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in \
$(srcdir)/pdnsd.in
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = $(top_srcdir)/configure.in
am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
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mkinstalldirs = $(install_sh) -d
CONFIG_HEADER = $(top_builddir)/config.h
CONFIG_CLEAN_FILES = pdnsd
CONFIG_CLEAN_VPATH_FILES =
SOURCES =
DIST_SOURCES =
DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
ACLOCAL = @ACLOCAL@
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CPP = @CPP@
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INSTALL = @INSTALL@
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INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
LDFLAGS = @LDFLAGS@
LIBOBJS = @LIBOBJS@
LIBS = @LIBS@
LTLIBOBJS = @LTLIBOBJS@
MAKEINFO = @MAKEINFO@
MKDIR_P = @MKDIR_P@
OBJEXT = @OBJEXT@
PACKAGE = @PACKAGE@
PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
PACKAGE_NAME = @PACKAGE_NAME@
PACKAGE_STRING = @PACKAGE_STRING@
PACKAGE_TARNAME = @PACKAGE_TARNAME@
PACKAGE_VERSION = @PACKAGE_VERSION@
PATH_SEPARATOR = @PATH_SEPARATOR@
RANLIB = @RANLIB@
SET_MAKE = @SET_MAKE@
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VERSION = @VERSION@
abs_builddir = @abs_builddir@
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abs_top_builddir = @abs_top_builddir@
abs_top_srcdir = @abs_top_srcdir@
ac_ct_CC = @ac_ct_CC@
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am__leading_dot = @am__leading_dot@
am__quote = @am__quote@
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fi
# Tell versions [3.59,3.63) of GNU make to not export all variables.
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.NOEXPORT:

45
app/src/main/jni/pdnsd/src/rc/ArchLinux/pdnsd.in Normal file
View File

@ -0,0 +1,45 @@
#!/bin/bash
. /etc/rc.conf
. /etc/rc.d/functions
PID=`pidof -o %PPID @prefix@/sbin/pdnsd`
start() {
stat_busy "Starting PDNSD"
[ -z "$PID" ] && @prefix@/sbin/pdnsd -d -c /etc/pdnsd.conf
if [ $? -gt 0 ]; then
stat_fail
else
add_daemon pdnsd
stat_done
fi
}
stop() {
stat_busy "Stopping PDNSD"
[ ! -z "$PID" ] && kill $PID &> /dev/null
if [ $? -gt 0 ]; then
stat_fail
else
rm_daemon pdnsd
stat_done
fi
}
case "$1" in
start)
start
;;
stop)
stop
;;
restart)
$0 stop
sleep 2
$0 start
;;
*)
echo "usage: $0 {start|stop|restart}"
esac
exit 0

8
app/src/main/jni/pdnsd/src/rc/Debian/Makefile.am Normal file
View File

@ -0,0 +1,8 @@
install-exec-local:
if [ "$(distribution)" = "Debian" ] ; then \
CURDIR=`pwd`; \
$(mkinstalldirs) "$(DESTDIR)/etc/init.d"; \
$(INSTALL_SCRIPT) $(srcdir)/pdnsd "$(DESTDIR)/etc/init.d"; \
update-rc.d pdnsd defaults 19 ;\
fi

334
app/src/main/jni/pdnsd/src/rc/Debian/Makefile.in Normal file
View File

@ -0,0 +1,334 @@
# Makefile.in generated by automake 1.11.1 from Makefile.am.
# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation,
# Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
@SET_MAKE@
VPATH = @srcdir@
pkgdatadir = $(datadir)/@PACKAGE@
pkgincludedir = $(includedir)/@PACKAGE@
pkglibdir = $(libdir)/@PACKAGE@
pkglibexecdir = $(libexecdir)/@PACKAGE@
am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
install_sh_DATA = $(install_sh) -c -m 644
install_sh_PROGRAM = $(install_sh) -c
install_sh_SCRIPT = $(install_sh) -c
INSTALL_HEADER = $(INSTALL_DATA)
transform = $(program_transform_name)
NORMAL_INSTALL = :
PRE_INSTALL = :
POST_INSTALL = :
NORMAL_UNINSTALL = :
PRE_UNINSTALL = :
POST_UNINSTALL = :
subdir = src/rc/Debian
DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in \
$(srcdir)/pdnsd.in
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = $(top_srcdir)/configure.in
am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
$(ACLOCAL_M4)
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#!/bin/sh
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SUBDIRS = RedHat SuSE Debian Slackware ArchLinux
EXTRA_DIST = README

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rc/
===
These are start scripts for different Linux distros and other things that
do not directly belong to pdnsd.
If you do start scripts for the distro you use, please GPL them and send
them in, so that they can be included in this package for other users.
Note that there is NO WARRANTY OF ANY KIND on anything in this directory;
read the COPYING that comes with pdnsd for details.
So far there are files in the following directories:
SuSE
----
pdnsd - Start script for SuSE Linux. Tested for 6.? but should run on some
versions below. You can do 'make install' as root in the SuSE
directory to install it, or you can install manually:
--manual installation-------------------------------------------------
For manual installation, copy it into /sbin/init.d/, go to
/sbin/init.d/rc2.d/ and create there the following two symlinks:
S11pdnsd -> ../pdnsd (do "ln -s ../pdnsd S11pdnsd" in that dir)
K34pdnsd -> ../pdnsd (do "ln -s ../pdnsd K34pdnsd" in that dir)
The numbers dictate the order different services are started and
might need to be modified. Then edit your /etc/rc.config file and
add the line "START_PDNSD=yes" to start pdnsd at boot time.
----------------------------------------------------------------------
If you used the 'make install' command, "START_PDNSD=yes" has been
appended to your /etc/rc.config file, causing pdnsd to be started
at boot time. If you don't want that, change the "yes" into "no".
This start script was created from /sbin/init.d/skeleton by me, so the
most is copyrighted by SuSE. They put it under the GPL, however, so
the licence stated in COPYING also applies to this script.
This is no official SuSE script, and SuSE naturally does NO support
for it.
Redhat
------
The contents of the Redhat directory and the following documentation were
contributed by Torben Janssen. Thanks a lot!
pdnsd - Start script for Redhat Linux. Tested for 6.1 but should run on 5.0+.
You can do 'make install' as root in the Redhat directory to
install it, or you can install manually:
--manual installation-------------------------------------------------
For manual installation, copy pdnsd into /etc/rc.d/init.d/
Then go to /etc/rc.d/rc3.d and create there the following symlink:
S78pdnsd -> ../init.d/pdnsd
(do "ln -f -s ../init.d/pdnsd S78pdnsd" in that dir)
Then go to /etc/rc.d/rc0.d and create there the following symlink:
K78pdnsd -> ../init.d/pdnsd
(do "ln -f -s ../init.d/pdnsd K78pdnsd" in that dir)
Then go to /etc/rc.d/rc6.d and create there the following symlink:
K78pdnsd -> ../init.d/pdnsd
(do "ln -f -s ../init.d/pdnsd K78pdnsd" in that dir)
WHY
---
the rc[0-6].d dirs includes the scripts which starts/stops the
services on entering runlevel [0-6]
the interesting runlevels on Redhat are:
0 - halt
3 - multi user system
6 - reboot
The links have an 'S' or 'K' and a number at the beginnig. All links
with 'S' starts the script on entering the runlevel and 'K' stops
them.
So, there's an 'S' link in rc3 and 'K' links in rc0 and rc6.
I choose 78 as number, because there was no script with this number on
my system. You can choose every number you want, AFAIK .
This is no offical Redhat script, and Redhat naturally does NO support
for it.
Debian
------
The contents of the Debian directory were contributed by Markus Mohr.
His installation instructions are (translated):
Install the pdnsd script to /etc/init and run
update-rc.d pdnsd defaults 19
as root.
Slackware
---------
A Slackware start-up script rc.pdnsd was contributed by Nikola Kotur <kotnik@ns-linux.org>.
His comments were:
Slackware uses traditional BSD style init script layout instead of SystemV
style startup scripts. So I adjusted the start-up script for pdnsd, and
now it can be used with Slackware 9.1 distribution, and probably with all the
others.
Additional info:
1) put these lines in the /etc/rc.d/rc.M:
if [ -x /etc/rc.d/rc.pdnsd ]; then
/etc/rc.d/rc.pdnsd start
fi
2) put these lines in the /etc/rc.d/rc.6 and /etc/rc.d/rc.K:
if [ -x /etc/rc.d/rc.pdnsd ]; then
/etc/rc.d/rc.pdnsd stop
fi

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# no need to create links. 'chkconfig' will take care of this.
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if [ "$(specbuild)" = "no" ] ; then \
/sbin/chkconfig --add pdnsd; \
fi \
fi

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88
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#!/bin/bash
#
# /etc/rc.d/init.d/pdnsd
#
# Script for starting the Proxy DNS Daemon
# Modified by Paul Rombouts, 2003
#
# chkconfig: 2345 11 89
# description: Proxy DNS Daemon
# processname: pdnsd
# config: /etc/pdnsd.conf
PATH=/sbin:/usr/sbin:/usr/local/sbin:/bin:/usr/bin:/usr/local/bin
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
# Check that networking is up.
if [[ $NETWORKING == [Nn][Oo] ]]; then exit 0; fi
# Source sysconfig settings, if any.
if [ -f /etc/sysconfig/pdnsd ]; then . /etc/sysconfig/pdnsd; fi
start() {
echo -n 'Starting pdnsd: '
daemon @prefix@/sbin/pdnsd -d -s -p /var/run/pdnsd.pid "$EXTRAOPTIONS"
local RETVAL=$?
echo
if [ $RETVAL -eq 0 ]; then touch /var/lock/subsys/pdnsd; fi
return $RETVAL
}
stop() {
echo -n 'Shutting down pdnsd: '
killproc pdnsd
local RETVAL=$?
case @threadlib@ in
[Ll]inux[Tt]hreads*|lt*)
# Wait until all threads have terminated.
local -i count=20
while [[ count -gt 0 ]] && pidof pdnsd > /dev/null
do
usleep 200000
let --count
done
;;
esac
echo
if [ $RETVAL -eq 0 ]; then rm -f /var/lock/subsys/pdnsd; fi
return $RETVAL
}
restart() {
stop
start
}
#
# See how we were called.
#
case "$1" in
start)
start
;;
stop)
stop
;;
status)
status pdnsd
;;
reload)
@prefix@/sbin/pdnsd-ctl config
;;
restart)
restart
;;
condrestart)
if [ -f /var/lock/subsys/pdnsd ]; then restart; fi
;;
*)
echo $"Usage: $0 {start|stop|status|restart|condrestart|reload}"
exit 1
esac
exit

3
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# TODO: write an install rule for the Slackware start-up script.
install-exec-local:

330
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74
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@ -0,0 +1,74 @@
#!/bin/bash
#
# /etc/rc.d/rc.pdnsd
#
# Starts the Proxy DNS Daemon
#
# description: Proxy DNS Daemon
# processname: pdnsd
# config: /etc/pdnsd.conf
# distribution: Slackware
# author: Nikola Kotur <kotnik@ns-linux.org>
#
# Additional info:
# 1) put these lines in the /etc/rc.d/rc.M:
# if [ -x /etc/rc.d/rc.pdnsd ]; then
# /etc/rc.d/rc.pdnsd start
# fi
#
# 2) put these lines in the /etc/rc.d/rc.6 and /etc/rc.d/rc.K:
# if [ -x /etc/rc.d/rc.pdnsd ]; then
# /etc/rc.d/rc.pdnsd stop
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RETVAL=0
start() {
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22
app/src/main/jni/pdnsd/src/rc/SuSE/Makefile.am Normal file
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@ -0,0 +1,22 @@
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345
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@ -0,0 +1,345 @@
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install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
`test -z '$(STRIP)' || \
echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
mostlyclean-generic:
clean-generic:
distclean-generic:
-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
maintainer-clean-generic:
@echo "This command is intended for maintainers to use"
@echo "it deletes files that may require special tools to rebuild."
clean: clean-am
clean-am: clean-generic mostlyclean-am
distclean: distclean-am
-rm -f Makefile
distclean-am: clean-am distclean-generic
dvi: dvi-am
dvi-am:
html: html-am
html-am:
info: info-am
info-am:
install-data-am:
install-dvi: install-dvi-am
install-dvi-am:
install-exec-am: install-exec-local
install-html: install-html-am
install-html-am:
install-info: install-info-am
install-info-am:
install-man:
install-pdf: install-pdf-am
install-pdf-am:
install-ps: install-ps-am
install-ps-am:
installcheck-am:
maintainer-clean: maintainer-clean-am
-rm -f Makefile
maintainer-clean-am: distclean-am maintainer-clean-generic
mostlyclean: mostlyclean-am
mostlyclean-am: mostlyclean-generic
pdf: pdf-am
pdf-am:
ps: ps-am
ps-am:
uninstall-am:
.MAKE: install-am install-strip
.PHONY: all all-am check check-am clean clean-generic distclean \
distclean-generic distdir dvi dvi-am html html-am info info-am \
install install-am install-data install-data-am install-dvi \
install-dvi-am install-exec install-exec-am install-exec-local \
install-html install-html-am install-info install-info-am \
install-man install-pdf install-pdf-am install-ps \
install-ps-am install-strip installcheck installcheck-am \
installdirs maintainer-clean maintainer-clean-generic \
mostlyclean mostlyclean-generic pdf pdf-am ps ps-am uninstall \
uninstall-am
install-exec-local:
if [ "$(distribution)" = "SuSE" ] ; then \
CURDIR=`pwd`; \
$(mkinstalldirs) "$(DESTDIR)/sbin/init.d"; \
$(INSTALL_SCRIPT) $(srcdir)/pdnsd "$(DESTDIR)/sbin/init.d/pdnsd"; \
$(mkinstalldirs) "$(DESTDIR)/sbin/init.d/rc2.d"; \
cd "$(DESTDIR)/sbin/init.d/rc2.d"; \
ln -fs ../pdnsd K34pdnsd; ln -s ../pdnsd S11pdnsd; \
cd $$CURDIR ; \
$(mkinstalldirs) "$(DESTDIR)/sbin/init.d/rc3.d"; \
cd "$(DESTDIR)/sbin/init.d/rc3.d"; \
ln -fs ../pdnsd K34pdnsd; ln -s ../pdnsd S11pdnsd; \
cd $$CURDIR ; \
grep "START_PDNSD" "$(DESTDIR)/etc/rc.config" > /dev/null ; \
if [ $$? -eq 1 ] ; then \
echo -e "\n\n#\n# Set to yes to start pdnsd at boot time\n#\nSTART_PDNSD=yes" >> /etc/rc.config ; \
fi \
fi
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

68
app/src/main/jni/pdnsd/src/rc/SuSE/pdnsd.in Normal file
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#! /bin/sh
# Copyright (c) 1995-1998 SuSE GmbH Nuernberg, Germany.
#
# Modified 2000 from SuSE Linux 6.3 /sbin/init.d/skeleton by Thomas Moestl
#
# /sbin/init.d/pdnsd
#
# and symbolic its link
#
# /sbin/rc?/pdnsd
#
. /etc/rc.config
# Determine the base and follow a runlevel link name.
base=${0##*/}
link=${base#*[SK][0-9][0-9]}
# Force execution if not called by a runlevel directory.
test $link = $base && START_PDNSD=yes
test "$START_PDNSD" = yes || exit 0
# The echo return value for success (defined in /etc/rc.config).
return=$rc_done
case "$1" in
start)
echo -n "Starting pdnsd"
## Start daemon with startproc(8). If this fails
## the echo return value is set appropriate.
startproc @prefix@/sbin/pdnsd -d || return=$rc_failed
echo -e "$return"
;;
stop)
echo -n "Shutting down pdnsd"
## Stop daemon with killproc(8) and if this fails
## set echo the echo return value.
killproc -TERM @prefix@/sbin/pdnsd || return=$rc_failed
echo -e "$return"
;;
restart)
## If first returns OK call the second, if first or
## second command fails, set echo return value.
$0 stop && $0 start || return=$rc_failed
;;
reload)
$0 stop && $0 start || return=$rc_failed
;;
status)
echo -n "Checking for pdnsd: "
## Check status with checkproc(8), if process is running
## checkproc will return with exit status 0.
checkproc @prefix@/sbin/pdnsd && echo OK || echo No process
;;
*)
echo "Usage: $0 {start|stop|status|restart|reload}"
exit 1
;;
esac
# Inform the caller not only verbosely and set an exit status.
test "$return" = "$rc_done" || exit 1
exit 0

172
app/src/main/jni/pdnsd/src/rr_types.c Normal file
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/* rr_types.c - Tables with information for handling
all rr types known to pdnsd, plus
some helper functions useful for turning
binary RR data into text or vice versa.
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2003, 2004, 2007, 2010, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <string.h>
#include <stdio.h>
#define DEFINE_RR_TYPE_ARRAYS 1
#include "helpers.h"
#include "dns.h"
#include "rr_types.h"
/*
* OK, this is inefficient. But it is used _really_ seldom (only in some cases while parsing the
* config file or by pdnsd-ctl), so it is much more effective to sort by id.
*/
int rr_tp_byname(char *name)
{
int i;
for (i=0;i<T_NUM;i++) {
if (strcmp(name, rrnames[i])==0)
return i+T_MIN;
}
return -1; /* invalid */
}
/* The following is not needed by pdnsd-ctl. */
#ifndef CLIENT_ONLY
static const unsigned int poweroften[8] = {1, 10, 100, 1000, 10000, 100000,
1000000,10000000};
#define NPRECSIZE (sizeof "90000000")
/* takes an XeY precision/size value, returns a string representation.
This is an adapted version of the function of the same name that
can be found in the BIND 9 source.
*/
static const char *precsize_ntoa(uint8_t prec,char *retbuf)
{
unsigned int mantissa, exponent;
mantissa = (prec >> 4);
exponent = (prec & 0x0f);
if(mantissa>=10 || exponent>=10)
return NULL;
if (exponent>= 2)
sprintf(retbuf, "%u", mantissa * poweroften[exponent-2]);
else
sprintf(retbuf, "0.%.2u", mantissa * poweroften[exponent]);
return (retbuf);
}
/* takes an on-the-wire LOC RR and formats it in a human readable format.
This is an adapted version of the loc_ntoa function that
can be found in the BIND 9 source.
*/
const char *loc2str(const void *binary, char *ascii, size_t asclen)
{
const unsigned char *cp = binary;
int latdeg, latmin, latsec, latsecfrac;
int longdeg, longmin, longsec, longsecfrac;
char northsouth, eastwest;
const char *altsign;
int altmeters, altfrac;
const uint32_t referencealt = 100000 * 100;
int32_t latval, longval, altval;
uint32_t templ;
uint8_t sizeval, hpval, vpval, versionval;
char sizestr[NPRECSIZE],hpstr[NPRECSIZE],vpstr[NPRECSIZE];
versionval = *cp++;
if (versionval) {
/* unknown LOC RR version */
return NULL;
}
sizeval = *cp++;
hpval = *cp++;
vpval = *cp++;
GETINT32(templ, cp);
latval = (templ - ((unsigned)1<<31));
GETINT32(templ, cp);
longval = (templ - ((unsigned)1<<31));
GETINT32(templ, cp);
if (templ < referencealt) { /* below WGS 84 spheroid */
altval = referencealt - templ;
altsign = "-";
} else {
altval = templ - referencealt;
altsign = "";
}
if (latval < 0) {
northsouth = 'S';
latval = -latval;
} else
northsouth = 'N';
latsecfrac = latval % 1000;
latval /= 1000;
latsec = latval % 60;
latval /= 60;
latmin = latval % 60;
latval /= 60;
latdeg = latval;
if (longval < 0) {
eastwest = 'W';
longval = -longval;
} else
eastwest = 'E';
longsecfrac = longval % 1000;
longval /= 1000;
longsec = longval % 60;
longval /= 60;
longmin = longval % 60;
longval /= 60;
longdeg = longval;
altfrac = altval % 100;
altmeters = (altval / 100);
if(!precsize_ntoa(sizeval,sizestr) || !precsize_ntoa(hpval,hpstr) || !precsize_ntoa(vpval,vpstr))
return NULL;
{
int n=snprintf(ascii,asclen,
"%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %s%d.%.2dm %sm %sm %sm",
latdeg, latmin, latsec, latsecfrac, northsouth,
longdeg, longmin, longsec, longsecfrac, eastwest,
altsign, altmeters, altfrac,
sizestr, hpstr, vpstr);
if(n<0 || n>=asclen)
return NULL;
}
return (ascii);
}
#endif

536
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/* This file was generated by running 'make_rr_types_h.pl rr_types.in'.
Modifications to this file may be lost the next time it is automatically
regenerated.
*/
/* rr_types.h - A header file with names & descriptions of
all rr types known to pdnsd
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2007, 2010, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef _RR_TYPES_H_
#define _RR_TYPES_H_
#include <config.h>
#define T_MIN 1
#define T_A 1
#define T_NS 2
#define T_MD 3
#define T_MF 4
#define T_CNAME 5
#define T_SOA 6
#define T_MB 7
#define T_MG 8
#define T_MR 9
#define T_NULL 10
#define T_WKS 11
#define T_PTR 12
#define T_HINFO 13
#define T_MINFO 14
#define T_MX 15
#define T_TXT 16
#define T_RP 17
#define T_AFSDB 18
#define T_X25 19
#define T_ISDN 20
#define T_RT 21
#define T_NSAP 22
#define T_NSAP_PTR 23
#define T_SIG 24
#define T_KEY 25
#define T_PX 26
#define T_GPOS 27
#define T_AAAA 28
#define T_LOC 29
#define T_NXT 30
#define T_EID 31
#define T_NIMLOC 32
#define T_SRV 33
#define T_ATMA 34
#define T_NAPTR 35
#define T_KX 36
#define T_CERT 37
#define T_A6 38
#define T_DNAME 39
#define T_SINK 40
#define T_OPT 41
#define T_APL 42
#define T_DS 43
#define T_SSHFP 44
#define T_IPSECKEY 45
#define T_RRSIG 46
#define T_NSEC 47
#define T_DNSKEY 48
#define T_DHCID 49
#define T_NSEC3 50
#define T_NSEC3PARAM 51
#define T_HIP 55
#define T_NINFO 56
#define T_RKEY 57
#define T_TALINK 58
#define T_SPF 99
#define T_UINFO 100
#define T_UID 101
#define T_GID 102
#define T_UNSPEC 103
#define T_MAX 51
/* T_MAX - T_MIN + 1 */
#define T_NUM 51
/* Number of most frequently used rr types. */
#define NRRMU 8
/* Number of remaining rr types. */
#define NRREXT 39
/* NRRMU + NRREXT */
#define NRRTOT 47
/* Lookup table for converting rr type values to internally used indices. */
extern const unsigned short int rrlkuptab[T_NUM];
#if DEFINE_RR_TYPE_ARRAYS && !defined(CLIENT_ONLY)
const unsigned short int rrlkuptab[T_NUM] = {
0 /* A */,
1 /* NS */,
8 /* MD */,
9 /* MF */,
2 /* CNAME */,
3 /* SOA */,
10 /* MB */,
11 /* MG */,
12 /* MR */,
13 /* NULL */,
14 /* WKS */,
4 /* PTR */,
15 /* HINFO */,
16 /* MINFO */,
5 /* MX */,
6 /* TXT */,
17 /* RP */,
18 /* AFSDB */,
19 /* X25 */,
20 /* ISDN */,
21 /* RT */,
22 /* NSAP */,
23 /* NSAP_PTR */,
24 /* SIG */,
25 /* KEY */,
26 /* PX */,
27 /* GPOS */,
7 /* AAAA */,
28 /* LOC */,
29 /* NXT */,
30 /* EID */,
31 /* NIMLOC */,
32 /* SRV */,
33 /* ATMA */,
34 /* NAPTR */,
35 /* KX */,
36 /* CERT */,
47 /* A6 */,
48 /* DNAME */,
49 /* SINK */,
50 /* OPT */,
37 /* APL */,
38 /* DS */,
39 /* SSHFP */,
40 /* IPSECKEY */,
41 /* RRSIG */,
42 /* NSEC */,
43 /* DNSKEY */,
44 /* DHCID */,
45 /* NSEC3 */,
46 /* NSEC3PARAM */
};
#endif
/* List of most frequently used RR types in ascending order. */
extern const unsigned short int rrmuiterlist[NRRMU];
#if DEFINE_RR_TYPE_ARRAYS && !defined(CLIENT_ONLY)
const unsigned short int rrmuiterlist[NRRMU] = {
T_A,
T_NS,
T_CNAME,
T_SOA,
T_PTR,
T_MX,
T_TXT,
T_AAAA
};
#endif
/* List of the cache-able RR types in ascending order. */
extern const unsigned short int rrcachiterlist[NRRTOT];
#if DEFINE_RR_TYPE_ARRAYS
const unsigned short int rrcachiterlist[NRRTOT] = {
T_A,
T_NS,
T_MD,
T_MF,
T_CNAME,
T_SOA,
T_MB,
T_MG,
T_MR,
T_NULL,
T_WKS,
T_PTR,
T_HINFO,
T_MINFO,
T_MX,
T_TXT,
T_RP,
T_AFSDB,
T_X25,
T_ISDN,
T_RT,
T_NSAP,
T_NSAP_PTR,
T_SIG,
T_KEY,
T_PX,
T_GPOS,
T_AAAA,
T_LOC,
T_NXT,
T_EID,
T_NIMLOC,
T_SRV,
T_ATMA,
T_NAPTR,
T_KX,
T_CERT,
T_APL,
T_DS,
T_SSHFP,
T_IPSECKEY,
T_RRSIG,
T_NSEC,
T_DNSKEY,
T_DHCID,
T_NSEC3,
T_NSEC3PARAM
};
#endif
/* Optimized getrrset macros for fixed rr types. */
#define getrrset_A(cent) GET_RRSMU(cent,0)
#define getrrset_NS(cent) GET_RRSMU(cent,1)
#define getrrset_MD(cent) GET_RRSEXT(cent,0)
#define getrrset_MF(cent) GET_RRSEXT(cent,1)
#define getrrset_CNAME(cent) GET_RRSMU(cent,2)
#define getrrset_SOA(cent) GET_RRSMU(cent,3)
#define getrrset_MB(cent) GET_RRSEXT(cent,2)
#define getrrset_MG(cent) GET_RRSEXT(cent,3)
#define getrrset_MR(cent) GET_RRSEXT(cent,4)
#define getrrset_NULL(cent) GET_RRSEXT(cent,5)
#define getrrset_WKS(cent) GET_RRSEXT(cent,6)
#define getrrset_PTR(cent) GET_RRSMU(cent,4)
#define getrrset_HINFO(cent) GET_RRSEXT(cent,7)
#define getrrset_MINFO(cent) GET_RRSEXT(cent,8)
#define getrrset_MX(cent) GET_RRSMU(cent,5)
#define getrrset_TXT(cent) GET_RRSMU(cent,6)
#define getrrset_RP(cent) GET_RRSEXT(cent,9)
#define getrrset_AFSDB(cent) GET_RRSEXT(cent,10)
#define getrrset_X25(cent) GET_RRSEXT(cent,11)
#define getrrset_ISDN(cent) GET_RRSEXT(cent,12)
#define getrrset_RT(cent) GET_RRSEXT(cent,13)
#define getrrset_NSAP(cent) GET_RRSEXT(cent,14)
#define getrrset_NSAP_PTR(cent) GET_RRSEXT(cent,15)
#define getrrset_SIG(cent) GET_RRSEXT(cent,16)
#define getrrset_KEY(cent) GET_RRSEXT(cent,17)
#define getrrset_PX(cent) GET_RRSEXT(cent,18)
#define getrrset_GPOS(cent) GET_RRSEXT(cent,19)
#define getrrset_AAAA(cent) GET_RRSMU(cent,7)
#define getrrset_LOC(cent) GET_RRSEXT(cent,20)
#define getrrset_NXT(cent) GET_RRSEXT(cent,21)
#define getrrset_EID(cent) GET_RRSEXT(cent,22)
#define getrrset_NIMLOC(cent) GET_RRSEXT(cent,23)
#define getrrset_SRV(cent) GET_RRSEXT(cent,24)
#define getrrset_ATMA(cent) GET_RRSEXT(cent,25)
#define getrrset_NAPTR(cent) GET_RRSEXT(cent,26)
#define getrrset_KX(cent) GET_RRSEXT(cent,27)
#define getrrset_CERT(cent) GET_RRSEXT(cent,28)
#define getrrset_APL(cent) GET_RRSEXT(cent,29)
#define getrrset_DS(cent) GET_RRSEXT(cent,30)
#define getrrset_SSHFP(cent) GET_RRSEXT(cent,31)
#define getrrset_IPSECKEY(cent) GET_RRSEXT(cent,32)
#define getrrset_RRSIG(cent) GET_RRSEXT(cent,33)
#define getrrset_NSEC(cent) GET_RRSEXT(cent,34)
#define getrrset_DNSKEY(cent) GET_RRSEXT(cent,35)
#define getrrset_DHCID(cent) GET_RRSEXT(cent,36)
#define getrrset_NSEC3(cent) GET_RRSEXT(cent,37)
#define getrrset_NSEC3PARAM(cent) GET_RRSEXT(cent,38)
/* have_rr macros for fixed rr types. */
#define have_rr_A(cent) HAVE_RRMU(cent,0)
#define have_rr_NS(cent) HAVE_RRMU(cent,1)
#define have_rr_MD(cent) HAVE_RREXT(cent,0)
#define have_rr_MF(cent) HAVE_RREXT(cent,1)
#define have_rr_CNAME(cent) HAVE_RRMU(cent,2)
#define have_rr_SOA(cent) HAVE_RRMU(cent,3)
#define have_rr_MB(cent) HAVE_RREXT(cent,2)
#define have_rr_MG(cent) HAVE_RREXT(cent,3)
#define have_rr_MR(cent) HAVE_RREXT(cent,4)
#define have_rr_NULL(cent) HAVE_RREXT(cent,5)
#define have_rr_WKS(cent) HAVE_RREXT(cent,6)
#define have_rr_PTR(cent) HAVE_RRMU(cent,4)
#define have_rr_HINFO(cent) HAVE_RREXT(cent,7)
#define have_rr_MINFO(cent) HAVE_RREXT(cent,8)
#define have_rr_MX(cent) HAVE_RRMU(cent,5)
#define have_rr_TXT(cent) HAVE_RRMU(cent,6)
#define have_rr_RP(cent) HAVE_RREXT(cent,9)
#define have_rr_AFSDB(cent) HAVE_RREXT(cent,10)
#define have_rr_X25(cent) HAVE_RREXT(cent,11)
#define have_rr_ISDN(cent) HAVE_RREXT(cent,12)
#define have_rr_RT(cent) HAVE_RREXT(cent,13)
#define have_rr_NSAP(cent) HAVE_RREXT(cent,14)
#define have_rr_NSAP_PTR(cent) HAVE_RREXT(cent,15)
#define have_rr_SIG(cent) HAVE_RREXT(cent,16)
#define have_rr_KEY(cent) HAVE_RREXT(cent,17)
#define have_rr_PX(cent) HAVE_RREXT(cent,18)
#define have_rr_GPOS(cent) HAVE_RREXT(cent,19)
#define have_rr_AAAA(cent) HAVE_RRMU(cent,7)
#define have_rr_LOC(cent) HAVE_RREXT(cent,20)
#define have_rr_NXT(cent) HAVE_RREXT(cent,21)
#define have_rr_EID(cent) HAVE_RREXT(cent,22)
#define have_rr_NIMLOC(cent) HAVE_RREXT(cent,23)
#define have_rr_SRV(cent) HAVE_RREXT(cent,24)
#define have_rr_ATMA(cent) HAVE_RREXT(cent,25)
#define have_rr_NAPTR(cent) HAVE_RREXT(cent,26)
#define have_rr_KX(cent) HAVE_RREXT(cent,27)
#define have_rr_CERT(cent) HAVE_RREXT(cent,28)
#define have_rr_A6(cent) 0
#define have_rr_DNAME(cent) 0
#define have_rr_SINK(cent) 0
#define have_rr_OPT(cent) 0
#define have_rr_APL(cent) HAVE_RREXT(cent,29)
#define have_rr_DS(cent) HAVE_RREXT(cent,30)
#define have_rr_SSHFP(cent) HAVE_RREXT(cent,31)
#define have_rr_IPSECKEY(cent) HAVE_RREXT(cent,32)
#define have_rr_RRSIG(cent) HAVE_RREXT(cent,33)
#define have_rr_NSEC(cent) HAVE_RREXT(cent,34)
#define have_rr_DNSKEY(cent) HAVE_RREXT(cent,35)
#define have_rr_DHCID(cent) HAVE_RREXT(cent,36)
#define have_rr_NSEC3(cent) HAVE_RREXT(cent,37)
#define have_rr_NSEC3PARAM(cent) HAVE_RREXT(cent,38)
/* These macros specify which RR types are cached by pdnsd. */
#define IS_CACHED_A 1
#define IS_CACHED_NS 1
#define IS_CACHED_MD 1
#define IS_CACHED_MF 1
#define IS_CACHED_CNAME 1
#define IS_CACHED_SOA 1
#define IS_CACHED_MB 1
#define IS_CACHED_MG 1
#define IS_CACHED_MR 1
#define IS_CACHED_NULL 1
#define IS_CACHED_WKS 1
#define IS_CACHED_PTR 1
#define IS_CACHED_HINFO 1
#define IS_CACHED_MINFO 1
#define IS_CACHED_MX 1
#define IS_CACHED_TXT 1
#define IS_CACHED_RP 1
#define IS_CACHED_AFSDB 1
#define IS_CACHED_X25 1
#define IS_CACHED_ISDN 1
#define IS_CACHED_RT 1
#define IS_CACHED_NSAP 1
#define IS_CACHED_NSAP_PTR 1
#define IS_CACHED_SIG 1
#define IS_CACHED_KEY 1
#define IS_CACHED_PX 1
#define IS_CACHED_GPOS 1
#define IS_CACHED_AAAA 1
#define IS_CACHED_LOC 1
#define IS_CACHED_NXT 1
#define IS_CACHED_EID 1
#define IS_CACHED_NIMLOC 1
#define IS_CACHED_SRV 1
#define IS_CACHED_ATMA 1
#define IS_CACHED_NAPTR 1
#define IS_CACHED_KX 1
#define IS_CACHED_CERT 1
#define IS_CACHED_APL 1
#define IS_CACHED_DS 1
#define IS_CACHED_SSHFP 1
#define IS_CACHED_IPSECKEY 1
#define IS_CACHED_RRSIG 1
#define IS_CACHED_NSEC 1
#define IS_CACHED_DNSKEY 1
#define IS_CACHED_DHCID 1
#define IS_CACHED_NSEC3 1
#define IS_CACHED_NSEC3PARAM 1
/* Array indices for most frequently used rr types. */
#define RRMUINDEX_A 0
#define RRMUINDEX_NS 1
#define RRMUINDEX_CNAME 2
#define RRMUINDEX_SOA 3
#define RRMUINDEX_PTR 4
#define RRMUINDEX_MX 5
#define RRMUINDEX_TXT 6
#define RRMUINDEX_AAAA 7
/* Table of rr names. */
extern const char *const rrnames[T_NUM];
#if DEFINE_RR_TYPE_ARRAYS
const char *const rrnames[T_NUM] = {
"A",
"NS",
"MD",
"MF",
"CNAME",
"SOA",
"MB",
"MG",
"MR",
"NULL",
"WKS",
"PTR",
"HINFO",
"MINFO",
"MX",
"TXT",
"RP",
"AFSDB",
"X25",
"ISDN",
"RT",
"NSAP",
"NSAP_PTR",
"SIG",
"KEY",
"PX",
"GPOS",
"AAAA",
"LOC",
"NXT",
"EID",
"NIMLOC",
"SRV",
"ATMA",
"NAPTR",
"KX",
"CERT",
"A6",
"DNAME",
"SINK",
"OPT",
"APL",
"DS",
"SSHFP",
"IPSECKEY",
"RRSIG",
"NSEC",
"DNSKEY",
"DHCID",
"NSEC3",
"NSEC3PARAM"
};
#endif
/* Structure for rr information */
struct rr_infos {
unsigned short class; /* class (values see below) */
unsigned short excludes; /* relations to other classes.
Mutual exclusion is marked by or'ing the
respective RRCL value in this field.
Exclusions should be symmetric. */
};
/* Class values */
#define RRCL_ALIAS 1 /* for CNAMES, conflicts with RRCL_RECORD */
#define RRCL_RECORD 2 /* normal direct record */
#define RRCL_IDEM 4 /* types that conflict with no others (MX, CNAME, ...) */
#define RRCL_PTR 8 /* PTR */
/* Standard excludes for the classes */
#define RRX_ALIAS (RRCL_RECORD|RRCL_PTR)
#define RRX_RECORD (RRCL_ALIAS|RRCL_PTR)
#define RRX_IDEM 0
#define RRX_PTR (RRCL_ALIAS|RRCL_RECORD)
/* There could be a separate table detailing the relationship of types, but this
* is slightly more flexible, as it allows a finer granularity of exclusion. Also,
* Membership in multiple classes could be added.
* Index by internally used RR-set indices, not RR type values!
*/
extern const struct rr_infos rr_info[NRRTOT];
#if DEFINE_RR_TYPE_ARRAYS && !defined(CLIENT_ONLY)
const struct rr_infos rr_info[NRRTOT] = {
{RRCL_RECORD, RRX_RECORD} /* A */,
{RRCL_IDEM, RRX_IDEM} /* NS */,
{RRCL_ALIAS, RRX_ALIAS} /* CNAME */,
{RRCL_IDEM, RRX_IDEM} /* SOA */,
{RRCL_PTR, RRX_PTR} /* PTR */,
{RRCL_IDEM, RRX_IDEM} /* MX */,
{RRCL_IDEM, RRX_IDEM} /* TXT */,
{RRCL_RECORD, RRX_RECORD} /* AAAA */,
{RRCL_IDEM, RRX_IDEM} /* MD */,
{RRCL_IDEM, RRX_IDEM} /* MF */,
{RRCL_IDEM, RRX_IDEM} /* MB */,
{RRCL_IDEM, RRX_IDEM} /* MG */,
{RRCL_IDEM, RRX_IDEM} /* MR */,
{RRCL_IDEM, RRX_IDEM} /* NULL */,
{RRCL_RECORD, RRX_RECORD} /* WKS */,
{RRCL_RECORD, RRX_RECORD} /* HINFO */,
{RRCL_IDEM, RRX_IDEM} /* MINFO */,
{RRCL_RECORD, RRX_RECORD} /* RP */,
{RRCL_RECORD, RRX_RECORD} /* AFSDB */,
{RRCL_RECORD, RRX_RECORD} /* X25 */,
{RRCL_RECORD, RRX_RECORD} /* ISDN */,
{RRCL_RECORD, RRX_RECORD} /* RT */,
{RRCL_RECORD, RRX_RECORD} /* NSAP */,
{RRCL_PTR, RRX_PTR} /* NSAP_PTR */,
{RRCL_IDEM, RRX_IDEM} /* SIG */,
{RRCL_IDEM, RRX_IDEM} /* KEY */,
{RRCL_IDEM, RRX_IDEM} /* PX */,
{RRCL_RECORD, RRX_RECORD} /* GPOS */,
{RRCL_RECORD, RRX_RECORD} /* LOC */,
{RRCL_IDEM, RRX_IDEM} /* NXT */,
{RRCL_RECORD, RRX_RECORD} /* EID */,
{RRCL_RECORD, RRX_RECORD} /* NIMLOC */,
{RRCL_RECORD, RRX_RECORD} /* SRV */,
{RRCL_RECORD, RRX_RECORD} /* ATMA */,
{RRCL_RECORD, RRX_RECORD} /* NAPTR */,
{RRCL_RECORD, RRX_RECORD} /* KX */,
{RRCL_RECORD, RRX_RECORD} /* CERT */,
{RRCL_IDEM, RRX_IDEM} /* APL */,
{RRCL_IDEM, RRX_IDEM} /* DS */,
{RRCL_IDEM, RRX_IDEM} /* SSHFP */,
{RRCL_IDEM, RRX_IDEM} /* IPSECKEY */,
{RRCL_IDEM, RRX_IDEM} /* RRSIG */,
{RRCL_IDEM, RRX_IDEM} /* NSEC */,
{RRCL_IDEM, RRX_IDEM} /* DNSKEY */,
{RRCL_IDEM, RRX_IDEM} /* DHCID */,
{RRCL_IDEM, RRX_IDEM} /* NSEC3 */,
{RRCL_IDEM, RRX_IDEM} /* NSEC3PARAM */
};
#endif
int rr_tp_byname(char *name);
const char *loc2str(const void *binary, char *ascii, size_t asclen);
#endif

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# This file is part of the pdnsd package.
# This file contains information about the RR types implemented in pdnsd
# and is used for generating rr_types.h.
# It was derived from the following source: http://www.bind9.net/dns-parameters
#
# After making modifications to this file the file rr_types.h should be regenerated!
#
# Info about the format of this file:
# Blank lines and lines starting with '#' are ignored, all other lines
# are assumed to define an RR type. Lines starting with '+' define most
# frequently used types. An RR type preceded by a '-' will not be cached
# by pdnsd. The next two fields are interpreted as the name and the value
# of the RR type, resp. A subsequent word in parenthesis will be interpreted a
# class name (used for conflict resolution). Remaining fields are ignored.
#
# Adding or removing an initial '+' can be done safely without requiring
# changes to the source code (other than regenerating rr_types.h).
#
# If you are sure that you will never use certain RR types you can disable
# caching for them and make pdnsd slightly more efficient by placing a
# '-' sign in front of the lines that define those types.
# For a list of obsolete RR types see e.g.
# http://en.wikipedia.org/wiki/List_of_DNS_record_types .
# Note that some RR types are essential for pdnsd; these are currently:
# A, NS, CNAME, SOA, PTR, MX and (if you want IPv6 support) AAAA.
# Disabling caching for these types will cause pdnsd to fail to compile
# or cause a fatal run-time error.
#
# Removing a '-' sign to enable caching can be risky if the support in
# the pdnsd code is missing or inadequate, so only do this if you really know
# what you are doing. SPF records are supported, however, so it should be safe
# to enable caching for them.
# RR TYPE Value (class) and meaning Reference
# ----------- --------------------------------------------- ---------
+ A 1 (RECORD) a host address [RFC 1035]
+ NS 2 an authoritative name server [RFC 1035]
MD 3 a mail destination (Obsolete - use MX) [RFC 1035]
MF 4 a mail forwarder (Obsolete - use MX) [RFC 1035]
+ CNAME 5 (ALIAS) the canonical name for an alias [RFC 1035]
+ SOA 6 marks the start of a zone of authority [RFC 1035]
MB 7 a mailbox domain name (EXPERIMENTAL) [RFC 1035]
MG 8 a mail group member (EXPERIMENTAL) [RFC 1035]
MR 9 a mail rename domain name (EXPERIMENTAL) [RFC 1035]
NULL 10 a null RR (EXPERIMENTAL) [RFC 1035]
WKS 11 (RECORD) a well known service description [RFC 1035]
+ PTR 12 (PTR) a domain name pointer [RFC 1035]
HINFO 13 (RECORD) host information [RFC 1035]
MINFO 14 mailbox or mail list information [RFC 1035]
+ MX 15 mail exchange [RFC 1035]
+ TXT 16 text strings [RFC 1035]
RP 17 (RECORD) for Responsible Person [RFC 1183]
AFSDB 18 (RECORD) for AFS Data Base location [RFC 1183][RFC 5864]
X25 19 (RECORD) for X.25 PSDN address [RFC 1183]
ISDN 20 (RECORD) for ISDN address [RFC 1183]
RT 21 (RECORD) for Route Through [RFC 1183]
NSAP 22 (RECORD) for NSAP address, NSAP style A record [RFC 1706]
NSAP-PTR 23 (PTR) for domain name pointer, NSAP style [RFC 1348]
SIG 24 for security signature [RFC 4034][RFC 3755][RFC 2535]
KEY 25 for security key [RFC 4034][RFC 3755][RFC 2535]
PX 26 X.400 mail mapping information [RFC 2163]
GPOS 27 (RECORD) Geographical Position [RFC 1712]
+ AAAA 28 (RECORD) IP6 Address [RFC 3596]
LOC 29 (RECORD) Location Information [RFC 1876]
NXT 30 Next Domain - OBSOLETE [RFC 3755][RFC 2535]
EID 31 (RECORD) Endpoint Identifier [Patton]
NIMLOC 32 (RECORD) Nimrod Locator [Patton]
SRV 33 (RECORD) Server Selection [RFC 2782]
ATMA 34 (RECORD) ATM Address [ATMDOC]
NAPTR 35 (RECORD) Naming Authority Pointer [RFC 2915][RFC 2168][RFC 3403]
KX 36 (RECORD) Key Exchanger [RFC 2230]
CERT 37 (RECORD) CERT [RFC 4398]
- A6 38 A6 (Experimental) [RFC 3226][RFC 2874]
- DNAME 39 (ALIAS) DNAME [RFC 2672]
- SINK 40 SINK [Eastlake]
- OPT 41 OPT [RFC 2671]
APL 42 APL [RFC 3123]
DS 43 Delegation Signer [RFC 4034][RFC 3658]
SSHFP 44 SSH Key Fingerprint [RFC 4255]
IPSECKEY 45 IPSECKEY [RFC 4025]
RRSIG 46 RRSIG [RFC 4034][RFC 3755]
NSEC 47 NSEC [RFC 4034][RFC 3755]
DNSKEY 48 DNSKEY [RFC 4034][RFC 3755]
DHCID 49 DHCID [RFC 4701]
NSEC3 50 NSEC3 [RFC 5155]
NSEC3PARAM 51 NSEC3PARAM [RFC 5155]
# Unassigned 52-54
- HIP 55 Host Identity Protocol [RFC 5205]
- NINFO 56 NINFO [Reid]
- RKEY 57 RKEY [Reid]
- TALINK 58 Trust Anchor LINK [Wijngaards]
# Unassigned 59-98
- SPF 99 Sender Policy Framework [RFC 4408]
- UINFO 100 [IANA-Reserved]
- UID 101 [IANA-Reserved]
- GID 102 [IANA-Reserved]
- UNSPEC 103 [IANA-Reserved]
# Unassigned 104-248

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/* servers.c - manage a set of dns servers
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2002, 2003, 2005, 2007, 2009, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <pthread.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <string.h>
#include <errno.h>
#include <signal.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <fnmatch.h>
#include <string.h>
#include "thread.h"
#include "error.h"
#include "servers.h"
#include "conff.h"
#include "consts.h"
#include "icmp.h"
#include "netdev.h"
#include "helpers.h"
#include "dns_query.h"
/*
* We may be a little over-strict with locks here. Never mind...
* Also, there may be some code-redundancy regarding uptests. It saves some locks, though.
*/
static pthread_mutex_t servers_lock = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t server_data_cond = PTHREAD_COND_INITIALIZER;
static pthread_cond_t server_test_cond = PTHREAD_COND_INITIALIZER;
static int server_data_users = 0, server_status_ping = 0;
/* Used to notify the server status thread that it should discontinue uptests. */
volatile int signal_interrupt=0;
#define statusintsig SIGHUP
static short retest_flag=0;
static char schm[32];
static void sigint_handler(int signum);
/*
* Execute an individual uptest. Call with locks applied
*/
static int uptest (servparm_t *serv, int j)
{
int ret=0, count_running_ping=0;
pdnsd_a *s_addr= PDNSD_A2_TO_A(&DA_INDEX(serv->atup_a,j).a);
DEBUG_PDNSDA_MSG("performing uptest (type=%s) for %s\n",const_name(serv->uptest),PDNSDA2STR(s_addr));
/* Unlock the mutex because some of the tests may take a while. */
++server_data_users;
if((serv->uptest==C_PING || serv->uptest==C_QUERY) && pthread_equal(pthread_self(),servstat_thrid)) {
/* Inform other threads that a ping is in progress. */
count_running_ping=1;
++server_status_ping;
}
pthread_mutex_unlock(&servers_lock);
switch (serv->uptest) {
case C_NONE:
/* Don't change */
ret=DA_INDEX(serv->atup_a,j).is_up;
break;
case C_PING:
ret=ping(is_inaddr_any(&serv->ping_a) ? s_addr : &serv->ping_a, serv->ping_timeout,PINGREPEAT)!=-1;
break;
case C_IF:
case C_DEV:
case C_DIALD:
ret=if_up(serv->interface);
#if (TARGET==TARGET_LINUX)
if (ret!=0) {
if(serv->uptest==C_DEV)
ret=dev_up(serv->interface,serv->device);
else if (serv->uptest==C_DIALD)
ret=dev_up("diald",serv->device);
}
#endif
break;
case C_EXEC: {
pid_t pid;
if ((pid=fork())==-1) {
DEBUG_MSG("Could not fork to perform exec uptest: %s\n",strerror(errno));
break;
} else if (pid==0) { /* child */
/*
* If we ran as setuid or setgid, do not inherit this to the
* command. This is just a last guard. Running pdnsd as setuid()
* or setgid() is a no-no.
*/
if (setgid(getgid()) == -1 || setuid(getuid()) == -1) {
log_error("Could not reset uid or gid: %s",strerror(errno));
_exit(1);
}
/* Try to setuid() to a different user as specified. Good when you
don't want the test command to run as root */
if (!run_as(serv->uptest_usr)) {
_exit(1);
}
{
struct rlimit rl; int i;
/*
* Mark all open fd's FD_CLOEXEC for paranoia reasons.
*/
if (getrlimit(RLIMIT_NOFILE, &rl) == -1) {
log_error("getrlimit() failed: %s",strerror(errno));
_exit(1);
}
for (i = 0; i < rl.rlim_max; i++) {
if (fcntl(i, F_SETFD, FD_CLOEXEC) == -1 && errno != EBADF) {
log_error("fcntl(F_SETFD) failed: %s",strerror(errno));
_exit(1);
}
}
}
execl("/bin/sh", "uptest_sh","-c",serv->uptest_cmd,(char *)NULL);
_exit(1); /* failed execl */
} else { /* parent */
int status;
pid_t wpid = waitpid(pid,&status,0);
if (wpid==pid) {
if(WIFEXITED(status)) {
int exitstatus=WEXITSTATUS(status);
DEBUG_MSG("uptest command \"%s\" exited with status %d\n",
serv->uptest_cmd, exitstatus);
ret=(exitstatus==0);
}
#if DEBUG>0
else if(WIFSIGNALED(status)) {
DEBUG_MSG("uptest command \"%s\" was terminated by signal %d\n",
serv->uptest_cmd, WTERMSIG(status));
}
else {
DEBUG_MSG("status of uptest command \"%s\" is of unkown type (0x%x)\n",
serv->uptest_cmd, status);
}
#endif
}
#if DEBUG>0
else if (wpid==-1) {
DEBUG_MSG("Error while waiting for uptest command \"%s\" to terminate: "
"waitpid for pid %d failed: %s\n",
serv->uptest_cmd, pid, strerror(errno));
}
else {
DEBUG_MSG("Error while waiting for uptest command \"%s\" to terminate: "
"waitpid returned %d, expected pid %d\n",
serv->uptest_cmd, wpid, pid);
}
#endif
}
}
break;
case C_QUERY:
ret=query_uptest(s_addr, serv->port, serv->query_test_name,
serv->timeout>=global.timeout?serv->timeout:global.timeout,
PINGREPEAT);
} /* end of switch */
pthread_mutex_lock(&servers_lock);
if(count_running_ping)
--server_status_ping;
PDNSD_ASSERT(server_data_users>0, "server_data_users non-positive before attempt to decrement it");
if (--server_data_users==0) pthread_cond_broadcast(&server_data_cond);
DEBUG_PDNSDA_MSG("result of uptest for %s: %s\n",
PDNSDA2STR(s_addr),
ret?"OK":"failed");
return ret;
}
static int scheme_ok(servparm_t *serv)
{
if (serv->scheme[0]) {
if (!schm[0]) {
ssize_t nschm;
int sc = open(global.scheme_file, O_RDONLY);
char *s;
if (sc<0)
return 0;
nschm = read(sc, schm, sizeof(schm)-1);
close(sc);
if (nschm < 0)
return 0;
schm[nschm] = '\0';
s = strchr(schm, '\n');
if (s)
*s='\0';
}
if (fnmatch(serv->scheme, schm, 0))
return 0;
}
return 1;
}
/* Internal server test. Call with locks applied.
May test a single server ip or several collectively.
*/
static void retest(int i, int j)
{
time_t s_ts;
servparm_t *srv=&DA_INDEX(servers,i);
int nsrvs=DA_NEL(srv->atup_a);
if(!nsrvs) return;
if(j>=0) {
if(j<nsrvs) nsrvs=j+1; /* test just one */
}
else {
j=0; /* test a range of servers */
}
if(!scheme_ok(srv)) {
s_ts=time(NULL);
for(;j<nsrvs;++j) {
atup_t *at=&DA_INDEX(srv->atup_a,j);
at->is_up=0;
at->i_ts=s_ts;
}
}
else if(srv->uptest==C_NONE) {
s_ts=time(NULL);
for(;j<nsrvs;++j) {
DA_INDEX(srv->atup_a,j).i_ts=s_ts;
}
}
else if(srv->uptest==C_QUERY || (srv->uptest==C_PING && is_inaddr_any(&srv->ping_a))) { /* test each ip address separately */
for(;j<nsrvs;++j) {
atup_t *at=&DA_INDEX(srv->atup_a,j);
s_ts=time(NULL);
at->is_up=uptest(srv,j);
if(signal_interrupt)
break;
at->i_ts=s_ts;
}
}
else { /* test ip addresses collectively */
int res;
s_ts=time(NULL);
res=uptest(srv,j);
for(;j<nsrvs;++j) {
atup_t *at=&DA_INDEX(srv->atup_a,j);
at->is_up=res;
if(signal_interrupt && srv->uptest==C_PING)
continue;
at->i_ts=s_ts;
}
}
}
/* This is called by the server status thread to discover the addresses of root servers.
Call with server_lock applied.
*/
static addr2_array resolv_rootserver_addrs(atup_array a, int port, char edns_query, time_t timeout)
{
addr2_array retval=NULL;
/* Unlock the mutex because this may take a while. */
++server_data_users;
pthread_mutex_unlock(&servers_lock);
retval= dns_rootserver_resolv(a,port,edns_query,timeout);
pthread_mutex_lock(&servers_lock);
PDNSD_ASSERT(server_data_users>0, "server_data_users non-positive before attempt to decrement it");
if (--server_data_users==0) pthread_cond_broadcast(&server_data_cond);
return retval;
}
/*
* Refresh the server status by pinging or testing the interface in the given interval.
* Note that you may get inaccuracies in the dimension of the ping timeout or the runtime
* of your uptest command if you have uptest=ping or uptest=exec for at least one server.
* This happens when all the uptests for the first n servers take more time than the inteval
* of n+1 (or 0 when n+1>servnum). I do not think that these delays are critical, so I did
* not to anything about that (because that may also be costly).
*/
void *servstat_thread(void *p)
{
struct sigaction action;
int keep_testing;
/* (void)p; */ /* To inhibit "unused variable" warning */
THREAD_SIGINIT;
pthread_mutex_lock(&servers_lock);
/* servstat_thrid=pthread_self(); */
signal_interrupt=0;
action.sa_handler = sigint_handler;
sigemptyset(&action.sa_mask);
action.sa_flags = 0;
if(sigaction(statusintsig, &action, NULL) == 0) {
sigset_t smask;
sigemptyset(&smask);
sigaddset(&smask, statusintsig);
pthread_sigmask(SIG_UNBLOCK,&smask,NULL);
}
else {
log_warn("Cannot install signal handler for server status thread: %s\n",strerror(errno));
}
for(;;) {
do {
int i,n;
keep_testing=0;
retest_flag=0;
schm[0] = '\0';
n=DA_NEL(servers);
for (i=0;i<n;++i) {
servparm_t *sp=&DA_INDEX(servers,i);
int j,m;
if(sp->rootserver==2) {
/* First get addresses of root servers. */
addr2_array adrs;
int l, one_up=0;
if(!scheme_ok(sp)) {
time_t now=time(NULL);
m=DA_NEL(sp->atup_a);
for(j=0;j<m;++j)
DA_INDEX(sp->atup_a,j).i_ts=now;
} else if(sp->uptest==C_PING || sp->uptest==C_QUERY) {
/* Skip ping or query tests until after discovery. */
if(sp->interval>0)
one_up= DA_NEL(sp->atup_a);
else {
time_t now=time(NULL);
m=DA_NEL(sp->atup_a);
for(j=0;j<m;++j) {
atup_t *at=&DA_INDEX(sp->atup_a,j);
if(at->is_up || at->i_ts==0)
one_up=1;
at->i_ts=now;
}
}
}
else {
retest(i,-1);
m=DA_NEL(sp->atup_a);
for(j=0;j<m;++j) {
if(DA_INDEX(sp->atup_a,j).is_up) {
one_up=1;
break;
}
}
}
if(!one_up) {
if (needs_intermittent_testing(sp)) keep_testing=1;
continue;
}
DEBUG_MSG("Attempting to discover root servers for server section #%d.\n",i);
adrs=resolv_rootserver_addrs(sp->atup_a,sp->port,sp->edns_query,sp->timeout);
l= DA_NEL(adrs);
if(l>0) {
struct timeval now;
struct timespec timeout;
atup_array ata;
DEBUG_MSG("Filling server section #%d with %d root server addresses.\n",i,l);
gettimeofday(&now,NULL);
timeout.tv_sec = now.tv_sec + 60; /* time out after 60 seconds */
timeout.tv_nsec = now.tv_usec * 1000;
while (server_data_users>0) {
if(pthread_cond_timedwait(&server_data_cond, &servers_lock, &timeout) == ETIMEDOUT) {
DEBUG_MSG("Timed out while waiting for exclusive access to server data"
" to set root server addresses of server section #%d\n",i);
da_free(adrs);
keep_testing=1;
continue;
}
}
ata = DA_CREATE(atup_array, l);
if(!ata) {
log_warn("Out of memory in servstat_thread() while discovering root servers.");
da_free(adrs);
keep_testing=1;
continue;
}
for(j=0; j<l; ++j) {
atup_t *at = &DA_INDEX(ata,j);
at->a = DA_INDEX(adrs,j);
at->is_up=sp->preset;
at->i_ts= sp->interval<0 ? time(NULL): 0;
}
da_free(sp->atup_a);
sp->atup_a=ata;
da_free(adrs);
/* Successfully set IP addresses for this server section. */
sp->rootserver=1;
}
else {
DEBUG_MSG("Failed to discover root servers in servstat_thread() (server section #%d).\n",i);
if(adrs) da_free(adrs);
if(DA_NEL(sp->atup_a)) keep_testing=1;
continue;
}
}
if (needs_testing(sp)) keep_testing=1;
m=DA_NEL(sp->atup_a);
for(j=0;j<m;++j)
if(DA_INDEX(sp->atup_a,j).i_ts)
goto individual_tests;
/* Test collectively */
if(!signal_interrupt) retest(i,-1);
continue;
individual_tests:
for(j=0; !signal_interrupt && j<m; ++j) {
time_t ts=DA_INDEX(sp->atup_a,j).i_ts, now;
if (ts==0 /* Always test servers with timestamp 0 */ ||
(needs_intermittent_testing(sp) &&
((now=time(NULL))-ts>sp->interval ||
ts>now /* kluge for clock skew */)))
{
retest(i,j);
}
}
}
} while(!signal_interrupt && retest_flag);
signal_interrupt=0;
/* Break the loop and exit the thread if it is no longer needed. */
if(!keep_testing) break;
{
struct timeval now;
struct timespec timeout;
time_t minwait;
int i,n,retval;
gettimeofday(&now,NULL);
minwait=3600; /* Check at least once every hour. */
n=DA_NEL(servers);
for (i=0;i<n;++i) {
servparm_t *sp=&DA_INDEX(servers,i);
int j,m=DA_NEL(sp->atup_a);
for(j=0;j<m;++j) {
time_t ts= DA_INDEX(sp->atup_a,j).i_ts;
if(ts==0) {
/* Test servers with timestamp 0 without delay */
if(minwait > 0) minwait=0;
}
else if(needs_intermittent_testing(sp)) {
time_t wait= ts + sp->interval - now.tv_sec;
if(wait < minwait) minwait=wait;
}
}
}
timeout.tv_sec = now.tv_sec;
if(minwait>0)
timeout.tv_sec += minwait;
timeout.tv_nsec = now.tv_usec * 1000 + 500000000; /* wait at least half a second. */
if(timeout.tv_nsec>=1000000000) {
timeout.tv_nsec -= 1000000000;
++timeout.tv_sec;
}
/* While we wait for a server_test_cond condition or a timeout
the servers_lock mutex is unlocked, so other threads can access
server data
*/
retval=pthread_cond_timedwait(&server_test_cond, &servers_lock, &timeout);
DEBUG_MSG("Server status thread woke up (%s signal).\n",
retval==0?"test condition":retval==ETIMEDOUT?"timer":retval==EINTR?"interrupt":"error");
}
}
/* server status thread no longer needed. */
servstat_thrid=main_thrid;
pthread_mutex_unlock(&servers_lock);
DEBUG_MSG("Server status thread exiting.\n");
return NULL;
}
/*
* Start the server status thread.
*/
int start_servstat_thread()
{
pthread_t stt;
int rv=pthread_create(&stt,&attr_detached,servstat_thread,NULL);
if (rv)
log_warn("Failed to start server status thread: %s",strerror(rv));
else {
servstat_thrid=stt;
log_info(2,"Server status thread started.");
}
return rv;
}
/*
* This can be used to mark a server (or a list of nadr servers) up (up=1) or down (up=0),
* or to schedule an immediate retest (up=-1).
* We can't always use indices to identify a server, because we allow run-time
* configuration of server addresses, so the servers are identified by their IP addresses.
*/
void sched_server_test(pdnsd_a *sa, int nadr, int up)
{
int k,signal_test;
pthread_mutex_lock(&servers_lock);
signal_test=0;
/* This obviously isn't very efficient, but nadr should be small
and anything else would introduce considerable overhead */
for(k=0;k<nadr;++k) {
pdnsd_a *sak= &sa[k];
int i,n=DA_NEL(servers);
for(i=0;i<n;++i) {
servparm_t *sp=&DA_INDEX(servers,i);
int j,m=DA_NEL(sp->atup_a);
for(j=0;j<m;++j) {
atup_t *at=&DA_INDEX(sp->atup_a,j);
if(equiv_inaddr2(sak,&at->a)) {
if(up>=0) {
at->is_up=up;
at->i_ts=time(NULL);
DEBUG_PDNSDA_MSG("Marked server %s %s.\n",PDNSDA2STR(sak),up?"up":"down");
}
else if(at->i_ts) {
/* A test may take a while, and we don't want to hold
up the calling thread.
Instead we set the timestamp to zero and signal
a condition which should wake up the server test thread.
*/
at->i_ts=0;
signal_test=1;
}
}
}
}
}
if(signal_test) pthread_cond_signal(&server_test_cond);
pthread_mutex_unlock(&servers_lock);
}
/* Mark a set of servers up or down or schedule uptests.
* If i>=0 only the server section with index i is scanned,
* if i<0 all sections are scanned.
* Only sections matching label are actually set. A NULL label matches
* any section.
* up=1 or up=0 means mark server up or down, up=-1 means retest.
*
* A non-zero return value indicates an error.
*/
int mark_servers(int i, char *label, int up)
{
int retval=0,n,signal_test;
pthread_mutex_lock(&servers_lock);
signal_test=0;
n=DA_NEL(servers);
if(i>=0) {
/* just one section */
if(i<n) n=i+1;
}
else {
i=0; /* scan all sections */
}
for(;i<n;++i) {
servparm_t *sp=&DA_INDEX(servers,i);
if(!label || (sp->label && !strcmp(sp->label,label))) {
int j,m=DA_NEL(sp->atup_a);
/* If a section with undiscovered root servers is marked up, signal a test. */
if(m && sp->rootserver>1 && up>0) signal_test=1;
for(j=0;j<m;++j) {
atup_t *at=&DA_INDEX(sp->atup_a,j);
if(up>=0) {
at->is_up=up;
at->i_ts=time(NULL);
}
else if(at->i_ts) {
/* A test may take a while, and we don't want to hold
up the calling thread.
Instead we set the timestamp to zero and signal
a condition which should wake up the server test thread.
*/
at->i_ts=0;
signal_test=1;
}
}
}
}
if(signal_test) {
if(pthread_equal(servstat_thrid,main_thrid))
retval=start_servstat_thread();
else {
retest_flag=1;
retval=pthread_cond_signal(&server_test_cond);
}
}
pthread_mutex_unlock(&servers_lock);
return retval;
}
/*
* Test called by the dns query handlers to handle interval=onquery cases.
*/
void test_onquery()
{
int i,n,signal_test;
pthread_mutex_lock(&servers_lock);
schm[0] = '\0';
signal_test=0;
n=DA_NEL(servers);
for (i=0;i<n;++i) {
servparm_t *sp=&DA_INDEX(servers,i);
if (sp->interval==-1) {
if(sp->rootserver<=1)
retest(i,-1);
else {
/* We leave root-server discovery to the server status thread */
int j,m=DA_NEL(sp->atup_a);
for(j=0;j<m;++j)
DA_INDEX(sp->atup_a,j).i_ts=0;
signal_test=1;
}
}
}
if(signal_test) {
int rv;
if(pthread_equal(servstat_thrid,main_thrid))
start_servstat_thread();
else {
retest_flag=1;
if((rv=pthread_cond_signal(&server_test_cond))) {
DEBUG_MSG("test_onquery(): couldn't signal server status thread: %s\n",strerror(rv));
}
}
}
pthread_mutex_unlock(&servers_lock);
}
/* non-exclusive lock, for read only access to server data. */
void lock_server_data()
{
pthread_mutex_lock(&servers_lock);
++server_data_users;
pthread_mutex_unlock(&servers_lock);
}
void unlock_server_data()
{
pthread_mutex_lock(&servers_lock);
PDNSD_ASSERT(server_data_users>0, "server_data_users non-positive before attempt to decrement it");
if (--server_data_users==0) pthread_cond_broadcast(&server_data_cond);
pthread_mutex_unlock(&servers_lock);
}
/* Try to obtain an exclusive lock, needed for modifying server data.
Return 1 on success, 0 on failure (time out after tm seconds).
*/
int exclusive_lock_server_data(int tm)
{
struct timeval now;
struct timespec timeout;
pthread_mutex_lock(&servers_lock);
if(server_status_ping>0 && !pthread_equal(servstat_thrid,main_thrid)) {
int err;
/* Try to interrupt server status thread to prevent delays. */
DEBUG_MSG("Sending server status thread an interrupt signal.\n");
if((err=pthread_kill(servstat_thrid,statusintsig))) {
DEBUG_MSG("pthread_kill failed: %s\n",strerror(err));
}
}
gettimeofday(&now,NULL);
timeout.tv_sec = now.tv_sec + tm; /* time out after tm seconds */
timeout.tv_nsec = now.tv_usec * 1000;
while (server_data_users>0) {
if(pthread_cond_timedwait(&server_data_cond, &servers_lock, &timeout) == ETIMEDOUT) {
pthread_mutex_unlock(&servers_lock);
return 0;
}
}
return 1;
}
/* Call this to free the lock obtained with exclusive_lock_server_data().
If retest is nonzero, the server-status thread is reactivated to check
which servers are up. This is useful in case the configuration has changed.
*/
void exclusive_unlock_server_data(int retest)
{
if(retest) {
if(pthread_equal(servstat_thrid,main_thrid))
start_servstat_thread();
else
pthread_cond_signal(&server_test_cond);
}
pthread_mutex_unlock(&servers_lock);
}
/*
Change addresses of servers during runtime.
i is the number of the server section to change.
ar should point to an array of IP addresses (may be NULL).
up=1 or up=0 means mark server up or down afterwards,
up=-1 means retest.
A non-zero return value indicates an error.
*/
int change_servers(int i, addr_array ar, int up)
{
int retval=0,j,change,signal_test;
int n;
servparm_t *sp;
pthread_mutex_lock(&servers_lock);
signal_test=0;
change=0;
n=DA_NEL(ar);
sp=&DA_INDEX(servers,i);
if(n != DA_NEL(sp->atup_a) || sp->rootserver>1)
change=1;
else {
int j;
for(j=0;j<n;++j)
if(!same_inaddr2(&DA_INDEX(ar,j),&DA_INDEX(sp->atup_a,j).a)) {
change=1;
break;
}
}
if(change) {
/* we need exclusive access to the server data to make the changes */
struct timeval now;
struct timespec timeout;
atup_array ata;
if(server_status_ping>0 && !pthread_equal(servstat_thrid,main_thrid)) {
int err;
/* Try to interrupt server status thread to prevent delays. */
DEBUG_MSG("Sending server status thread an interrupt signal.\n");
if((err=pthread_kill(servstat_thrid,statusintsig))) {
DEBUG_MSG("pthread_kill failed: %s\n",strerror(err));
}
}
DEBUG_MSG("Changing IPs of server section #%d\n",i);
gettimeofday(&now,NULL);
timeout.tv_sec = now.tv_sec + 60; /* time out after 60 seconds */
timeout.tv_nsec = now.tv_usec * 1000;
while (server_data_users>0) {
if(pthread_cond_timedwait(&server_data_cond, &servers_lock, &timeout) == ETIMEDOUT) {
retval=ETIMEDOUT;
goto unlock_mutex;
}
}
ata= DA_CREATE(atup_array, n);
if(!ata) {
log_warn("Out of memory in change_servers().");
retval=ENOMEM;
goto unlock_mutex;
}
da_free(sp->atup_a);
sp->atup_a=ata;
/* Stop trying to discover rootservers
if we set the addresses using this routine. */
if(sp->rootserver>1) sp->rootserver=1;
}
for(j=0; j<n; ++j) {
atup_t *at = &DA_INDEX(sp->atup_a,j);
if(change) {
SET_PDNSD_A2(&at->a, &DA_INDEX(ar,j));
at->is_up=sp->preset;
}
if(up>=0) {
at->is_up=up;
at->i_ts=time(NULL);
}
else if(change || at->i_ts) {
/* A test may take a while, and we don't want to hold
up the calling thread.
Instead we set the timestamp to zero and signal
a condition which should wake up the server test thread.
*/
at->i_ts=0;
signal_test=1;
}
}
if(signal_test) {
if(pthread_equal(servstat_thrid,main_thrid))
retval=start_servstat_thread();
else {
retest_flag=1;
retval=pthread_cond_signal(&server_test_cond);
}
}
unlock_mutex:
pthread_mutex_unlock(&servers_lock);
return retval;
}
/*
The signal handler for the signal to tell the server status thread to discontinue testing.
*/
static void sigint_handler(int signum)
{
signal_interrupt=1;
}

68
app/src/main/jni/pdnsd/src/servers.h Normal file
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@ -0,0 +1,68 @@
/* servers.h - manage a set of dns servers
Copyright (C) 2000 Thomas Moestl
Copyright (C) 2002, 2003, 2004, 2005 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef _SERVERS_H_
#define _SERVERS_H_
#include <config.h>
#include "consts.h"
/* Number of ping timeouts before we take a server offline. */
#define PINGREPEAT 2
extern pthread_t servstat_thrid;
extern volatile int signal_interrupt;
int start_servstat_thread(void);
void sched_server_test(pdnsd_a *sa, int nadr, int up);
int mark_servers(int i, char* label, int up);
void test_onquery(void);
void lock_server_data();
void unlock_server_data();
int exclusive_lock_server_data(int tm);
void exclusive_unlock_server_data(int retest);
int change_servers(int i, addr_array ar, int up);
inline static int needs_testing(servparm_t *sp)
__attribute__((always_inline));
inline static int needs_testing(servparm_t *sp)
{
return ((sp->interval>0 || sp->interval==-2) && (sp->uptest!=C_NONE || sp->scheme[0]));
}
inline static int needs_intermittent_testing(servparm_t *sp)
__attribute__((always_inline));
inline static int needs_intermittent_testing(servparm_t *sp)
{
return (sp->interval>0 && (sp->uptest!=C_NONE || sp->scheme[0]));
}
inline static int is_interrupted_servstat_thread()
__attribute__((always_inline));
inline static int is_interrupted_servstat_thread()
{
return (signal_interrupt && pthread_equal(pthread_self(),servstat_thrid));
}
#endif

25
app/src/main/jni/pdnsd/src/sort_namevalues.pl Normal file
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@ -0,0 +1,25 @@
#!/usr/bin/perl -w
use strict;
my %dic;
my $maxkeylen=0;
while(<>) {
if(/"(\w+)".*?(\w+)/) {
my $key=$1; my $val=$2;
if($dic{$key}) {die "The key \"$key\" does not have a unique value.\n"}
$dic{$key}=$val;
if(length($key)>$maxkeylen) {$maxkeylen=length($key)}
}
else {die "Can't find key-value pair in following line:\n$_\n"}
}
my $linenr=0;
foreach my $key (sort(keys %dic)) {
if($linenr++) {print ",\n"}
printf("\t{%-*s%s}",$maxkeylen+4,"\"$key\",",$dic{$key});
}
print "\n";
exit

824
app/src/main/jni/pdnsd/src/status.c Normal file
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@ -0,0 +1,824 @@
/* status.c - Allow control of a running server using a socket
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2011 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_ALLOCA_H
#include <alloca.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/utsname.h>
#include <errno.h>
#include <pthread.h>
#include <string.h>
#include <ctype.h>
#include <unistd.h>
#include <signal.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <stddef.h> /* for offsetof */
#include "ipvers.h"
#include "status.h"
#include "thread.h"
#include "cache.h"
#include "error.h"
#include "servers.h"
#include "dns_answer.h"
#include "helpers.h"
#include "conf-parser.h"
#if !defined(HAVE_ALLOCA) && !defined(alloca)
#define alloca malloc
#endif
char *sock_path=NULL;
int stat_sock;
/* Print an error to the socket */
static int print_serr(int rs, const char *msg)
{
uint16_t cmd;
DEBUG_MSG("Sending error message to control socket: '%s'\n",msg);
cmd=htons(1);
if(write(rs,&cmd,sizeof(cmd))!=sizeof(cmd) ||
write_all(rs,msg,strlen(msg))<0)
{
DEBUG_MSG("Error writing to control socket: %s\n",strerror(errno));
return 0;
}
return 1;
}
/* Print a success code to the socket */
static int print_succ(int rs)
{
uint16_t cmd;
cmd=htons(0);
if(write(rs,&cmd,sizeof(cmd))!=sizeof(cmd)) {
DEBUG_MSG("Error writing to control socket: %s\n"
"Failed to send success code.\n",strerror(errno));
return 0;
}
return 1;
}
/* Read a cmd short */
static int read_short(int fh, uint16_t *res)
{
uint16_t cmd;
if (read(fh,&cmd,sizeof(cmd))!=sizeof(cmd)) {
/* print_serr(fh,"Bad arg."); */
return 0;
}
*res= ntohs(cmd);
return 1;
}
/* Read a cmd long */
static int read_long(int fh, uint32_t *res)
{
uint32_t cmd;
if (read(fh,&cmd,sizeof(cmd))!=sizeof(cmd)) {
/* print_serr(fh,"Bad arg."); */
return 0;
}
*res= ntohl(cmd);
return 1;
}
/* Read a string preceded by a char count.
A buffer of the right size is allocated to hold the result.
A return value of 1 means success,
-1 means the result is undefined (*res is set to NULL),
0 means read or allocation error.
*/
static int read_allocstring(int fh, char **res, unsigned *len)
{
uint16_t count;
char *buf;
unsigned int nread;
if(!read_short(fh,&count)) return 0;
if(count==(uint16_t)(~0)) {*res=NULL; return -1;}
if(!(buf=malloc(count+1))) return 0;
nread=0;
while(nread<count) {
ssize_t m=read(fh,buf+nread,count-nread);
if(m<=0) {free(buf); return 0;}
nread+=m;
}
buf[count]=0;
*res=buf;
if(len) *len=count;
return 1;
}
/* Read a string preceded by a char count.
Place it in a buffer of size buflen and terminate with a null char.
A return value of 1 means success, -1 means not defined,
0 means error (read error, buffer too small).
*/
static int read_domain(int fh, char *buf, unsigned int buflen)
{
uint16_t count;
unsigned int nread;
if(!read_short(fh,&count)) return 0;
if(count==(uint16_t)(~0)) return -1;
if(count >=buflen) return 0;
nread=0;
while(nread<count) {
ssize_t m=read(fh,buf+nread,count-nread);
if(m<=0) return 0;
nread+=m;
}
buf[count]=0;
#if 0
if(count==0 || buf[count-1]!='.') {
if(count+1>=buflen) return 0;
buf[count]='.'; buf[count+1]=0;
}
#endif
return 1;
}
static void *status_thread (void *p)
{
THREAD_SIGINIT;
/* (void)p; */ /* To inhibit "unused variable" warning */
if (!global.strict_suid) {
if (!run_as(global.run_as)) {
pdnsd_exit();
}
}
if (listen(stat_sock,5)==-1) {
log_warn("Error: could not listen on socket: %s.\nStatus readback will be impossible",strerror(errno));
goto exit_thread;
}
for(;;) {
struct sockaddr_un ra;
socklen_t res=sizeof(ra);
int rs;
if ((rs=accept(stat_sock,(struct sockaddr *)&ra,&res))!=-1) {
uint16_t cmd;
DEBUG_MSG("Status socket query pending.\n");
if (read_short(rs,&cmd)) {
/* Check magic number in command */
if((cmd & 0xff00) == CTL_CMDVERNR) {
const char *errmsg;
cmd &= 0xff;
switch(cmd) {
case CTL_STATS: {
struct utsname nm;
DEBUG_MSG("Received STATUS query.\n");
if(!print_succ(rs))
break;
uname(&nm);
if(fsprintf(rs,"pdnsd-%s running on %s.\n",VERSION,nm.nodename)<0 ||
report_cache_stat(rs)<0 ||
report_thread_stat(rs)<0 ||
report_conf_stat(rs)<0)
{
DEBUG_MSG("Error writing to control socket: %s\n"
"Failed to send status report.\n",strerror(errno));
}
}
break;
case CTL_SERVER: {
char *label,*dnsaddr;
int indx;
uint16_t cmd2;
DEBUG_MSG("Received SERVER command.\n");
if (read_allocstring(rs,&label,NULL)<=0) {
print_serr(rs,"Error reading server label.");
break;
}
if (!read_short(rs,&cmd2)) {
print_serr(rs,"Missing up|down|retest.");
goto free_label_break;
}
if(!read_allocstring(rs, &dnsaddr,NULL)) {
print_serr(rs,"Error reading DNS addresses.");
goto free_label_break;
}
/* Note by Paul Rombouts:
We are about to access server configuration data.
Now that the configuration can be changed during run time,
we should be using locks before accessing server config data, even if it
is read-only access.
However, as long as this is the only thread that calls reload_config_file()
it should be OK to read the server config without locks, but it is
something to keep in mind.
*/
{
char *endptr;
indx=strtol(label,&endptr,0);
if(!*endptr) {
if (indx<0 || indx>=DA_NEL(servers)) {
print_serr(rs,"Server index out of range.");
goto free_dnsaddr_label_break;
}
}
else {
if (!strcmp(label, "all"))
indx=-2; /* all servers */
else
indx=-1; /* compare names */
}
}
if(cmd2==CTL_S_UP || cmd2==CTL_S_DOWN || cmd2==CTL_S_RETEST) {
if(!dnsaddr) {
if (indx==-1) {
int i;
for (i=0;i<DA_NEL(servers);++i) {
char *servlabel=DA_INDEX(servers,i).label;
if (servlabel && !strcmp(servlabel,label))
goto found_label;
}
print_serr(rs,"Bad server label.");
goto free_dnsaddr_label_break;
found_label:;
}
if(mark_servers(indx,(indx==-1)?label:NULL,(cmd2==CTL_S_RETEST)?-1:(cmd2==CTL_S_UP))==0)
print_succ(rs);
else
print_serr(rs,"Could not start up or signal server status thread.");
}
else { /* Change server addresses */
if(indx==-2) {
print_serr(rs,"Can't use label \"all\" to change server addresses.");
goto free_dnsaddr_label_break;
}
if(indx==-1) {
int i;
for(i=0;i<DA_NEL(servers);++i) {
char *servlabel=DA_INDEX(servers,i).label;
if (servlabel && !strcmp(servlabel,label)) {
if(indx!=-1) {
print_serr(rs,"server label must be unique to change server addresses.");
goto free_dnsaddr_label_break;
}
indx=i;
}
}
if(indx==-1) {
print_serr(rs,"Bad server label.");
goto free_dnsaddr_label_break;
}
}
{
char *ipstr,*q=dnsaddr;
addr_array ar=NULL;
pdnsd_a addr;
int err;
for(;;) {
for(;;) {
if(!*q) goto change_servs;
if(*q!=',' && !isspace(*q)) break;
++q;
}
ipstr=q;
for(;;) {
++q;
if(!*q) break;
if(*q==',' || isspace(*q)) {*q++=0; break; }
}
if(!str2pdnsd_a(ipstr,&addr)) {
print_serr(rs,"Bad server ip");
goto free_ar;
}
if(!(ar=DA_GROW1(ar))) {
print_serr(rs,"Out of memory.");
goto free_dnsaddr_label_break;
}
DA_LAST(ar)=addr;
}
change_servs:
err=change_servers(indx,ar,(cmd2==CTL_S_RETEST)?-1:(cmd2==CTL_S_UP));
if(err==0)
print_succ(rs);
else
print_serr(rs,err==ETIMEDOUT?"Timed out while trying to gain access to server data.":
err==ENOMEM?"Out of memory.":
"Could not start up or signal server status thread.");
free_ar:
da_free(ar);
}
}
}
else
print_serr(rs,"Bad command.");
free_dnsaddr_label_break:
free(dnsaddr);
free_label_break:
free(label);
}
break;
case CTL_RECORD: {
uint16_t cmd2;
unsigned char name[DNSNAMEBUFSIZE],buf[DNSNAMEBUFSIZE];
DEBUG_MSG("Received RECORD command.\n");
if (!read_short(rs,&cmd2))
goto incomplete_command;
if (read_domain(rs, charp buf, sizeof(buf))<=0)
goto incomplete_command;
if ((errmsg=parsestr2rhn(buf,sizeof(buf),name))!=NULL)
goto bad_domain_name;
switch (cmd2) {
case CTL_R_DELETE:
del_cache(name);
print_succ(rs);
break;
case CTL_R_INVAL:
invalidate_record(name);
print_succ(rs);
break;
default:
print_serr(rs,"Bad command.");
}
}
break;
case CTL_SOURCE: {
uint32_t ttl;
char *fn;
uint16_t servaliases,flags;
unsigned char buf[DNSNAMEBUFSIZE],owner[DNSNAMEBUFSIZE];
DEBUG_MSG("Received SOURCE command.\n");
if (read_allocstring(rs,&fn,NULL)<=0) {
print_serr(rs,"Bad filename name.");
break;
}
if (read_domain(rs, charp buf, sizeof(buf))<=0 ||
!read_long(rs,&ttl) ||
!read_short(rs,&servaliases) || /* serve aliases */
!read_short(rs,&flags)) /* caching flags */
{
print_serr(rs,"Malformed or incomplete command.");
goto free_fn;
}
if ((errmsg=parsestr2rhn(buf,sizeof(buf),owner))!=NULL) {
print_serr(rs,errmsg);
goto free_fn;
}
if (ttl < 0) {
print_serr(rs, "Bad TTL.");
goto free_fn;
}
if(flags&DF_NEGATIVE) {
print_serr(rs, "Bad cache flags.");
goto free_fn;
}
{
char *errmsg;
if (read_hosts(fn,owner,ttl,flags,servaliases,&errmsg))
print_succ(rs);
else {
print_serr(rs,errmsg?:"Out of memory.");
free(errmsg);
}
}
free_fn:
free(fn);
}
break;
case CTL_ADD: {
uint32_t ttl;
unsigned sz;
uint16_t tp,flags,nadr=0;
unsigned char name[DNSNAMEBUFSIZE],buf[DNSNAMEBUFSIZE],dbuf[2+DNSNAMEBUFSIZE];
size_t adrbufsz=0;
unsigned char *adrbuf=NULL;
DEBUG_MSG("Received ADD command.\n");
if (!read_short(rs,&tp))
goto incomplete_command;
if (read_domain(rs, charp buf, sizeof(buf))<=0)
goto incomplete_command;
if (!read_long(rs,&ttl))
goto incomplete_command;
if (!read_short(rs,&flags)) /* caching flags */
goto incomplete_command;
if ((errmsg=parsestr2rhn(buf,sizeof(buf),name))!=NULL)
goto bad_domain_name;
if (ttl < 0)
goto bad_ttl;
if(flags&DF_NEGATIVE)
goto bad_flags;
switch (tp) {
case T_A:
sz=sizeof(struct in_addr);
#if ALLOW_LOCAL_AAAA
goto read_adress_list;
case T_AAAA:
sz=sizeof(struct in6_addr);
read_adress_list:
#endif
if (!read_short(rs,&nadr))
goto incomplete_command;
if (!nadr)
goto bad_arg;
adrbufsz= nadr * (size_t)sz;
adrbuf= malloc(adrbufsz);
if(!adrbuf)
goto out_of_memory;
{
size_t nread=0;
while(nread<adrbufsz) {
ssize_t m=read(rs,adrbuf+nread,adrbufsz-nread);
if(m<=0) {free(adrbuf); goto bad_arg;}
nread += m;
}
}
break;
case T_CNAME:
case T_PTR:
case T_NS:
if (read_domain(rs, charp buf, sizeof(buf))<=0)
goto incomplete_command;
if ((errmsg=parsestr2rhn(buf,sizeof(buf),dbuf))!=NULL)
goto bad_domain_name;
sz=rhnlen(dbuf);
break;
case T_MX:
if (read(rs,dbuf,2)!=2)
goto bad_arg;
if (read_domain(rs, charp buf, sizeof(buf))<=0)
goto incomplete_command;
if ((errmsg=parsestr2rhn(buf,sizeof(buf),dbuf+2))!=NULL)
goto bad_domain_name;
sz=rhnlen(dbuf+2)+2;
break;
default:
goto bad_arg;
}
{
dns_cent_t cent;
if (!init_cent(&cent, name, 0, 0, flags DBG1)) {
free(adrbuf);
goto out_of_memory;
}
if(adrbuf) {
unsigned char *adrp; int i;
for(adrp=adrbuf,i=0; i<nadr; adrp += sz,++i) {
if (!add_cent_rr(&cent,tp,ttl,0,CF_LOCAL,sz,adrp DBG1)) {
free_cent(&cent DBG1);
free(adrbuf);
goto out_of_memory;
}
}
free(adrbuf);
}
else if (!add_cent_rr(&cent,tp,ttl,0,CF_LOCAL,sz,dbuf DBG1)) {
free_cent(&cent DBG1);
goto out_of_memory;
}
if(cent.qname[0]==1 && cent.qname[1]=='*') {
/* Wild card record.
Set the DF_WILD flag for the name with '*.' removed. */
if(!set_cent_flags(&cent.qname[2],DF_WILD)) {
print_serr(rs,
"Before defining records for a name with a wildcard"
" you must first define some records for the name"
" with '*.' removed.");
goto cleanup_cent;
}
}
add_cache(&cent);
print_succ(rs);
cleanup_cent:
free_cent(&cent DBG1);
}
}
break;
case CTL_NEG: {
uint32_t ttl;
uint16_t tp;
unsigned char name[DNSNAMEBUFSIZE],buf[DNSNAMEBUFSIZE];
DEBUG_MSG("Received NEG command.\n");
if (read_domain(rs, charp buf, sizeof(buf))<=0)
goto incomplete_command;
if (!read_short(rs,&tp))
goto incomplete_command;
if (!read_long(rs,&ttl))
goto incomplete_command;
if ((errmsg=parsestr2rhn(buf,sizeof(buf),name))!=NULL) {
DEBUG_MSG("NEG: received bad domain name.\n");
goto bad_domain_name;
}
if (tp!=255 && PDNSD_NOT_CACHED_TYPE(tp)) {
DEBUG_MSG("NEG: received bad record type.\n");
print_serr(rs,"Bad record type.");
break;
}
if (ttl < 0)
goto bad_ttl;
{
dns_cent_t cent;
if (tp==255) {
if (!init_cent(&cent, name, ttl, 0, DF_LOCAL|DF_NEGATIVE DBG1))
goto out_of_memory;
} else {
if (!init_cent(&cent, name, 0, 0, 0 DBG1))
goto out_of_memory;
if (!add_cent_rrset_by_type(&cent,tp,ttl,0,CF_LOCAL|CF_NEGATIVE DBG1)) {
free_cent(&cent DBG1);
goto out_of_memory;
}
}
add_cache(&cent);
free_cent(&cent DBG1);
}
print_succ(rs);
}
break;
case CTL_CONFIG: {
char *fn,*errmsg;
DEBUG_MSG("Received CONFIG command.\n");
if (!read_allocstring(rs,&fn,NULL)) {
print_serr(rs,"Bad filename name.");
break;
}
if (reload_config_file(fn,&errmsg))
print_succ(rs);
else {
print_serr(rs,errmsg?:"Out of memory.");
free(errmsg);
}
free(fn);
}
break;
case CTL_INCLUDE: {
char *fn,*errmsg;
DEBUG_MSG("Received INCLUDE command.\n");
if (read_allocstring(rs,&fn,NULL)<=0) {
print_serr(rs,"Bad filename name.");
break;
}
if (read_config_file(fn,NULL,NULL,0,&errmsg))
print_succ(rs);
else {
print_serr(rs,errmsg?:"Out of memory.");
free(errmsg);
}
free(fn);
}
break;
case CTL_EVAL: {
char *str,*errmsg;
DEBUG_MSG("Received EVAL command.\n");
if (!read_allocstring(rs,&str,NULL)) {
print_serr(rs,"Bad input string.");
break;
}
if (confparse(NULL,str,NULL,NULL,0,&errmsg))
print_succ(rs);
else {
print_serr(rs,errmsg?:"Out of memory.");
free(errmsg);
}
free(str);
}
break;
case CTL_EMPTY: {
slist_array sla=NULL;
char *names; unsigned len;
DEBUG_MSG("Received EMPTY command.\n");
if (!read_allocstring(rs,&names,&len)) {
print_serr(rs,"Bad arguments.");
break;
}
if(names) {
char *p=names, *last=names+len;
while(p<last) {
int tp;
char *q;
slist_t *sl;
unsigned sz;
unsigned char rhn[DNSNAMEBUFSIZE];
if(*p=='-') {
tp=C_EXCLUDED;
++p;
}
else {
tp=C_INCLUDED;
if(*p=='+') ++p;
}
/* skip a possible leading dot. */
if(p+1<last && *p=='.' && *(p+1)) ++p;
q=p;
while(q<last && *q) ++q;
if ((errmsg=parsestr2rhn(ucharp p,q-p,rhn))!=NULL) {
DEBUG_MSG("EMPTY: received bad domain name: %s\n",p);
print_serr(rs,errmsg);
goto free_sla_names_break;
}
sz=rhnlen(rhn);
if (!(sla=DA_GROW1_F(sla,free_slist_domain))) {
print_serr(rs,"Out of memory.");
goto free_names_break;
}
sl=&DA_LAST(sla);
if (!(sl->domain=malloc(sz))) {
print_serr(rs,"Out of memory.");
goto free_sla_names_break;
}
memcpy(sl->domain,rhn,sz);
sl->exact=0;
sl->rule=tp;
p = q+1;
}
}
if(empty_cache(sla))
print_succ(rs);
else
print_serr(rs,"Could not lock the cache.");
free_sla_names_break:
free_slist_array(sla);
free_names_break:
free(names);
}
break;
case CTL_DUMP: {
int rv,exact=0;
unsigned char *nm=NULL;
char buf[DNSNAMEBUFSIZE];
unsigned char rhn[DNSNAMEBUFSIZE];
DEBUG_MSG("Received DUMP command.\n");
if (!(rv=read_domain(rs,buf,sizeof(buf)))) {
print_serr(rs,"Bad domain name.");
break;
}
if(rv>0) {
int sz;
exact=1; nm= ucharp buf; sz=sizeof(buf);
if(buf[0]=='.' && buf[1]) {
exact=0; ++nm; --sz;
}
if ((errmsg=parsestr2rhn(nm,sz,rhn))!=NULL)
goto bad_domain_name;
nm=rhn;
}
if(!print_succ(rs))
break;
if((rv=dump_cache(rs,nm,exact))<0 ||
(!rv && fsprintf(rs,"Could not find %s%s in the cache.\n",
exact?"":nm?"any entries matching ":"any entries",
nm?buf:"")<0))
{
DEBUG_MSG("Error writing to control socket: %s\n",strerror(errno));
}
}
break;
incomplete_command:
print_serr(rs,"Malformed or incomplete command.");
break;
bad_arg:
print_serr(rs,"Bad arg.");
break;
bad_domain_name:
print_serr(rs,errmsg);
break;
bad_ttl:
print_serr(rs, "Bad TTL.");
break;
bad_flags:
print_serr(rs, "Bad cache flags.");
break;
out_of_memory:
print_serr(rs,"Out of memory.");
break;
default:
print_serr(rs,"Unknown command.");
}
}
else {
DEBUG_MSG("Incorrect magic number in status-socket command code: %02x\n",cmd>>8);
print_serr(rs,"Command code contains incompatible version number.");
}
}
else {
DEBUG_MSG("short status-socket query\n");
print_serr(rs,"Command code missing or too short.");
}
close(rs);
usleep_r(100000); /* sleep some time. I do not want the query frequency to be too high. */
}
else if (errno!=EINTR) {
log_warn("Failed to accept connection on status socket: %s. "
"Status readback will be impossible",strerror(errno));
break;
}
}
exit_thread:
stat_pipe=0;
close(stat_sock);
statsock_thrid=main_thrid;
return NULL;
}
/*
* Initialize the status socket
*/
void init_stat_sock()
{
struct sockaddr_un *sa;
/* Should I include the terminating null byte in the calculation of the length parameter
for the socket address? The glibc info page "Details of Local Namespace" tells me I should not,
yet it is immediately followed by an example that contradicts that.
The SUN_LEN macro seems to be defined as
(offsetof(struct sockaddr_un, sun_path) + strlen(sa->sun_path)),
so I conclude it is not necessary to count the null byte, but it probably makes no
difference if you do.
*/
unsigned int sa_len = (offsetof(struct sockaddr_un, sun_path) + strlitlen("/pdnsd.status") + strlen(global.cache_dir));
sa=(struct sockaddr_un *)alloca(sa_len+1);
stpcpy(stpcpy(sa->sun_path,global.cache_dir),"/pdnsd.status");
if (unlink(sa->sun_path)!=0 && errno!=ENOENT) { /* Delete the socket */
log_warn("Failed to unlink %s: %s.\nStatus readback will be disabled",sa->sun_path, strerror(errno));
stat_pipe=0;
return;
}
if ((stat_sock=socket(PF_UNIX,SOCK_STREAM,0))==-1) {
log_warn("Failed to open socket: %s. Status readback will be impossible",strerror(errno));
stat_pipe=0;
return;
}
sa->sun_family=AF_UNIX;
#ifdef BSD44_SOCKA
sa->sun_len=SUN_LEN(sa);
#endif
/* Early initialization, so that umask can be used race-free. */
{
mode_t old_mask = umask((S_IRWXU|S_IRWXG|S_IRWXO)&(~global.ctl_perms));
if (bind(stat_sock,(struct sockaddr *)sa,sa_len)==-1) {
log_warn("Error: could not bind socket: %s.\nStatus readback will be impossible",strerror(errno));
close(stat_sock);
stat_pipe=0;
}
umask(old_mask);
}
if(stat_pipe) sock_path= strdup(sa->sun_path);
}
/*
* Start the status socket thread (see above)
*/
int start_stat_sock()
{
pthread_t st;
int rv=pthread_create(&st,&attr_detached,status_thread,NULL);
if (rv)
log_warn("Failed to start status thread. The status socket will be unuseable");
else {
statsock_thrid=st;
log_info(2,"Status thread started.");
}
return rv;
}

59
app/src/main/jni/pdnsd/src/status.h Normal file
View File

@ -0,0 +1,59 @@
/* status.h - Make server status information accessible through a named pipe
Copyright (C) 2000, 2001 Thomas Moestl
Copyright (C) 2002, 2004, 2008, 2009 Paul A. Rombouts
This file is part of the pdnsd package.
pdnsd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
pdnsd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pdnsd; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef _STATUS_H_
#define _STATUS_H_
#include <config.h>
#include "conff.h"
extern char *sock_path;
extern int stat_sock;
/* The commands for pdnsd-ctl */
#define CTL_CMDVERNR 0x6800 /* pdnsd-ctl command version (magic number used to check compatibility) */
#define CTL_MIN 1
#define CTL_STATS 1 /* Give out stats (like the "traditional" status pipe) */
#define CTL_SERVER 2 /* Enable or disable a server */
#define CTL_RECORD 3 /* Delete or invalidate records */
#define CTL_SOURCE 4 /* Read a hosts-style file */
#define CTL_ADD 5 /* Add a record of the given type */
#define CTL_NEG 6 /* Add a negative cached record */
#define CTL_CONFIG 7 /* Re-read config file */
#define CTL_INCLUDE 8 /* Read file as config file, disregarding global and server sections */
#define CTL_EVAL 9 /* Parse string as if part of config file */
#define CTL_EMPTY 10 /* Empty the cache */
#define CTL_DUMP 11 /* Dump cache contents */
#define CTL_MAX 11
#define CTL_S_UP 1
#define CTL_S_DOWN 2
#define CTL_S_RETEST 3
#define CTL_R_DELETE 1
#define CTL_R_INVAL 2
void init_stat_sock(void);
int start_stat_sock(void);
#endif

35
app/src/main/jni/pdnsd/src/test/Makefile.am Normal file
View File

@ -0,0 +1,35 @@
.PHONY: all clean distclean
noinst_PROGRAMS = if_up is_local_addr tping random
## Dirty trick: I demand that these objects be built; then, with the knowledge
## that the object files will end up here, I redefine the link chain.
TESTADDSRC=
#TESTADDSRC= netdev.c error.c thread.c helpers.c icmp.c
TESTDEPS = netdev.o error.o thread.o helpers.o icmp.o
TESTOBJS = netdev.o error.o thread.o helpers.o icmp.o
if_up_SOURCES = if_up.c $(TESTADDSRC)
if_up_LDADD = $(TESTOBJS) @thread_CFLAGS@
if_up_DEPENDENCIES = $(TESTDEPS)
is_local_addr_SOURCES = is_local_addr.c $(TESTADDSRC)
is_local_addr_LDADD = $(TESTOBJS) @thread_CFLAGS@
is_local_addr_DEPENDENCIES = $(TESTDEPS)
tping_SOURCES = tping.c $(TESTADDSRC)
tping_LDADD = $(TESTOBJS) @thread_CFLAGS@
tping_DEPENDENCIES = $(TESTDEPS)
random_SOURCES = random.c $(TESTADDSRC)
random_LDADD = $(TESTOBJS) @thread_CFLAGS@
random_DEPENDENCIES = $(TESTDEPS)
# These are Symlinks we want to have in the package
#EXTRA_DIST = conff.h error.h helpers.h icmp.h ipvers.h netdev.h thread.h cacheing
$(TESTOBJS): %.o: ../%.c
$(COMPILE) @thread_CFLAGS@ -c $<

464
app/src/main/jni/pdnsd/src/test/Makefile.in Normal file
View File

@ -0,0 +1,464 @@
# Makefile.in generated by automake 1.11.1 from Makefile.am.
# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation,
# Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
@SET_MAKE@
VPATH = @srcdir@
pkgdatadir = $(datadir)/@PACKAGE@
pkgincludedir = $(includedir)/@PACKAGE@
pkglibdir = $(libdir)/@PACKAGE@
pkglibexecdir = $(libexecdir)/@PACKAGE@
am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
install_sh_DATA = $(install_sh) -c -m 644
install_sh_PROGRAM = $(install_sh) -c
install_sh_SCRIPT = $(install_sh) -c
INSTALL_HEADER = $(INSTALL_DATA)
transform = $(program_transform_name)
NORMAL_INSTALL = :
PRE_INSTALL = :
POST_INSTALL = :
NORMAL_UNINSTALL = :
PRE_UNINSTALL = :
POST_UNINSTALL = :
noinst_PROGRAMS = if_up$(EXEEXT) is_local_addr$(EXEEXT) tping$(EXEEXT) \
random$(EXEEXT)
subdir = src/test
DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
am__aclocal_m4_deps = $(top_srcdir)/configure.in
am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
$(ACLOCAL_M4)
mkinstalldirs = $(install_sh) -d
CONFIG_HEADER = $(top_builddir)/config.h
CONFIG_CLEAN_FILES =
CONFIG_CLEAN_VPATH_FILES =
PROGRAMS = $(noinst_PROGRAMS)
am__objects_1 =
am_if_up_OBJECTS = if_up.$(OBJEXT) $(am__objects_1)
if_up_OBJECTS = $(am_if_up_OBJECTS)
am_is_local_addr_OBJECTS = is_local_addr.$(OBJEXT) $(am__objects_1)
is_local_addr_OBJECTS = $(am_is_local_addr_OBJECTS)
am_random_OBJECTS = random.$(OBJEXT) $(am__objects_1)
random_OBJECTS = $(am_random_OBJECTS)
am_tping_OBJECTS = tping.$(OBJEXT) $(am__objects_1)
tping_OBJECTS = $(am_tping_OBJECTS)
DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)
depcomp = $(SHELL) $(top_srcdir)/depcomp
am__depfiles_maybe = depfiles
am__mv = mv -f
COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
CCLD = $(CC)
LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
SOURCES = $(if_up_SOURCES) $(is_local_addr_SOURCES) $(random_SOURCES) \
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DIST_SOURCES = $(if_up_SOURCES) $(is_local_addr_SOURCES) \
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ETAGS = etags
CTAGS = ctags
DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
ACLOCAL = @ACLOCAL@
ALLOCA = @ALLOCA@
AMTAR = @AMTAR@
AUTOCONF = @AUTOCONF@
AUTOHEADER = @AUTOHEADER@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
CC = @CC@
CCDEPMODE = @CCDEPMODE@
CFLAGS = @CFLAGS@
CPP = @CPP@
CPPFLAGS = @CPPFLAGS@
CYGPATH_W = @CYGPATH_W@
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DEPDIR = @DEPDIR@
ECHO_C = @ECHO_C@
ECHO_N = @ECHO_N@
ECHO_T = @ECHO_T@
EGREP = @EGREP@
EXEEXT = @EXEEXT@
GREP = @GREP@
INSTALL = @INSTALL@
INSTALL_DATA = @INSTALL_DATA@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
INSTALL_SCRIPT = @INSTALL_SCRIPT@
INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
LDFLAGS = @LDFLAGS@
LIBOBJS = @LIBOBJS@
LIBS = @LIBS@
LTLIBOBJS = @LTLIBOBJS@
MAKEINFO = @MAKEINFO@
MKDIR_P = @MKDIR_P@
OBJEXT = @OBJEXT@
PACKAGE = @PACKAGE@
PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
PACKAGE_NAME = @PACKAGE_NAME@
PACKAGE_STRING = @PACKAGE_STRING@
PACKAGE_TARNAME = @PACKAGE_TARNAME@
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PATH_SEPARATOR = @PATH_SEPARATOR@
RANLIB = @RANLIB@
SET_MAKE = @SET_MAKE@
SHELL = @SHELL@
STRIP = @STRIP@
VERSION = @VERSION@
abs_builddir = @abs_builddir@
abs_srcdir = @abs_srcdir@
abs_top_builddir = @abs_top_builddir@
abs_top_srcdir = @abs_top_srcdir@
ac_ct_CC = @ac_ct_CC@
am__include = @am__include@
am__leading_dot = @am__leading_dot@
am__quote = @am__quote@
am__tar = @am__tar@
am__untar = @am__untar@
bindir = @bindir@
build_alias = @build_alias@
builddir = @builddir@
cachedir = @cachedir@
datadir = @datadir@
datarootdir = @datarootdir@
def_id = @def_id@
distribution = @distribution@
docdir = @docdir@
dvidir = @dvidir@
exec_prefix = @exec_prefix@
fullversion = @fullversion@
host_alias = @host_alias@
htmldir = @htmldir@
includedir = @includedir@
infodir = @infodir@
install_sh = @install_sh@
libdir = @libdir@
libexecdir = @libexecdir@
localedir = @localedir@
localstatedir = @localstatedir@
mandir = @mandir@
mkdir_p = @mkdir_p@
oldincludedir = @oldincludedir@
packagerelease = @packagerelease@
pdfdir = @pdfdir@
prefix = @prefix@
program_transform_name = @program_transform_name@
psdir = @psdir@
sbindir = @sbindir@
sharedstatedir = @sharedstatedir@
specbuild = @specbuild@
srcdir = @srcdir@
sysconfdir = @sysconfdir@
target_alias = @target_alias@
thread_CFLAGS = @thread_CFLAGS@
threadlib = @threadlib@
top_build_prefix = @top_build_prefix@
top_builddir = @top_builddir@
top_srcdir = @top_srcdir@
TESTADDSRC =
#TESTADDSRC= netdev.c error.c thread.c helpers.c icmp.c
TESTDEPS = netdev.o error.o thread.o helpers.o icmp.o
TESTOBJS = netdev.o error.o thread.o helpers.o icmp.o
if_up_SOURCES = if_up.c $(TESTADDSRC)
if_up_LDADD = $(TESTOBJS) @thread_CFLAGS@
if_up_DEPENDENCIES = $(TESTDEPS)
is_local_addr_SOURCES = is_local_addr.c $(TESTADDSRC)
is_local_addr_LDADD = $(TESTOBJS) @thread_CFLAGS@
is_local_addr_DEPENDENCIES = $(TESTDEPS)
tping_SOURCES = tping.c $(TESTADDSRC)
tping_LDADD = $(TESTOBJS) @thread_CFLAGS@
tping_DEPENDENCIES = $(TESTDEPS)
random_SOURCES = random.c $(TESTADDSRC)
random_LDADD = $(TESTOBJS) @thread_CFLAGS@
random_DEPENDENCIES = $(TESTDEPS)
all: all-am
.SUFFIXES:
.SUFFIXES: .c .o .obj
$(srcdir)/Makefile.in: $(srcdir)/Makefile.am $(am__configure_deps)
@for dep in $?; do \
case '$(am__configure_deps)' in \
*$$dep*) \
( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
&& { if test -f $@; then exit 0; else break; fi; }; \
exit 1;; \
esac; \
done; \
echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu src/test/Makefile'; \
$(am__cd) $(top_srcdir) && \
$(AUTOMAKE) --gnu src/test/Makefile
.PRECIOUS: Makefile
Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
@case '$?' in \
*config.status*) \
cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
*) \
echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
esac;
$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
$(top_srcdir)/configure: $(am__configure_deps)
cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
$(ACLOCAL_M4): $(am__aclocal_m4_deps)
cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
$(am__aclocal_m4_deps):
clean-noinstPROGRAMS:
-test -z "$(noinst_PROGRAMS)" || rm -f $(noinst_PROGRAMS)
if_up$(EXEEXT): $(if_up_OBJECTS) $(if_up_DEPENDENCIES)
@rm -f if_up$(EXEEXT)
$(LINK) $(if_up_OBJECTS) $(if_up_LDADD) $(LIBS)
is_local_addr$(EXEEXT): $(is_local_addr_OBJECTS) $(is_local_addr_DEPENDENCIES)
@rm -f is_local_addr$(EXEEXT)
$(LINK) $(is_local_addr_OBJECTS) $(is_local_addr_LDADD) $(LIBS)
random$(EXEEXT): $(random_OBJECTS) $(random_DEPENDENCIES)
@rm -f random$(EXEEXT)
$(LINK) $(random_OBJECTS) $(random_LDADD) $(LIBS)
tping$(EXEEXT): $(tping_OBJECTS) $(tping_DEPENDENCIES)
@rm -f tping$(EXEEXT)
$(LINK) $(tping_OBJECTS) $(tping_LDADD) $(LIBS)
mostlyclean-compile:
-rm -f *.$(OBJEXT)
distclean-compile:
-rm -f *.tab.c
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/if_up.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/is_local_addr.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/random.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tping.Po@am__quote@
.c.o:
@am__fastdepCC_TRUE@ $(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
@am__fastdepCC_TRUE@ $(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@ $(COMPILE) -c $<
.c.obj:
@am__fastdepCC_TRUE@ $(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
@am__fastdepCC_TRUE@ $(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCC_FALSE@ $(COMPILE) -c `$(CYGPATH_W) '$<'`
ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
unique=`for i in $$list; do \
if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
done | \
$(AWK) '{ files[$$0] = 1; nonempty = 1; } \
END { if (nonempty) { for (i in files) print i; }; }'`; \
mkid -fID $$unique
tags: TAGS
TAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) \
$(TAGS_FILES) $(LISP)
set x; \
here=`pwd`; \
list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
unique=`for i in $$list; do \
if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
done | \
$(AWK) '{ files[$$0] = 1; nonempty = 1; } \
END { if (nonempty) { for (i in files) print i; }; }'`; \
shift; \
if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
test -n "$$unique" || unique=$$empty_fix; \
if test $$# -gt 0; then \
$(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
"$$@" $$unique; \
else \
$(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
$$unique; \
fi; \
fi
ctags: CTAGS
CTAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) \
$(TAGS_FILES) $(LISP)
list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
unique=`for i in $$list; do \
if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
done | \
$(AWK) '{ files[$$0] = 1; nonempty = 1; } \
END { if (nonempty) { for (i in files) print i; }; }'`; \
test -z "$(CTAGS_ARGS)$$unique" \
|| $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
$$unique
GTAGS:
here=`$(am__cd) $(top_builddir) && pwd` \
&& $(am__cd) $(top_srcdir) \
&& gtags -i $(GTAGS_ARGS) "$$here"
distclean-tags:
-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
distdir: $(DISTFILES)
@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
list='$(DISTFILES)'; \
dist_files=`for file in $$list; do echo $$file; done | \
sed -e "s|^$$srcdirstrip/||;t" \
-e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
case $$dist_files in \
*/*) $(MKDIR_P) `echo "$$dist_files" | \
sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
sort -u` ;; \
esac; \
for file in $$dist_files; do \
if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
if test -d $$d/$$file; then \
dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
if test -d "$(distdir)/$$file"; then \
find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
fi; \
if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
fi; \
cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
else \
test -f "$(distdir)/$$file" \
|| cp -p $$d/$$file "$(distdir)/$$file" \
|| exit 1; \
fi; \
done
check-am: all-am
check: check-am
all-am: Makefile $(PROGRAMS)
installdirs:
install: install-am
install-exec: install-exec-am
install-data: install-data-am
uninstall: uninstall-am
install-am: all-am
@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
installcheck: installcheck-am
install-strip:
$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
`test -z '$(STRIP)' || \
echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
mostlyclean-generic:
clean-generic:
distclean-generic:
-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
maintainer-clean-generic:
@echo "This command is intended for maintainers to use"
@echo "it deletes files that may require special tools to rebuild."
clean: clean-am
clean-am: clean-generic clean-noinstPROGRAMS mostlyclean-am
distclean: distclean-am
-rm -rf ./$(DEPDIR)
-rm -f Makefile
distclean-am: clean-am distclean-compile distclean-generic \
distclean-tags
dvi: dvi-am
dvi-am:
html: html-am
html-am:
info: info-am
info-am:
install-data-am:
install-dvi: install-dvi-am
install-dvi-am:
install-exec-am:
install-html: install-html-am
install-html-am:
install-info: install-info-am
install-info-am:
install-man:
install-pdf: install-pdf-am
install-pdf-am:
install-ps: install-ps-am
install-ps-am:
installcheck-am:
maintainer-clean: maintainer-clean-am
-rm -rf ./$(DEPDIR)
-rm -f Makefile
maintainer-clean-am: distclean-am maintainer-clean-generic
mostlyclean: mostlyclean-am
mostlyclean-am: mostlyclean-compile mostlyclean-generic
pdf: pdf-am
pdf-am:
ps: ps-am
ps-am:
uninstall-am:
.MAKE: install-am install-strip
.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \
clean-noinstPROGRAMS ctags distclean distclean-compile \
distclean-generic distclean-tags distdir dvi dvi-am html \
html-am info info-am install install-am install-data \
install-data-am install-dvi install-dvi-am install-exec \
install-exec-am install-html install-html-am install-info \
install-info-am install-man install-pdf install-pdf-am \
install-ps install-ps-am install-strip installcheck \
installcheck-am installdirs maintainer-clean \
maintainer-clean-generic mostlyclean mostlyclean-compile \
mostlyclean-generic pdf pdf-am ps ps-am tags uninstall \
uninstall-am
.PHONY: all clean distclean
# These are Symlinks we want to have in the package
#EXTRA_DIST = conff.h error.h helpers.h icmp.h ipvers.h netdev.h thread.h cacheing
$(TESTOBJS): %.o: ../%.c
$(COMPILE) @thread_CFLAGS@ -c $<
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

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