2012-05-03 18:32:18 +00:00
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#ifndef PROJECT_H_INCLUDED
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#define PROJECT_H_INCLUDED
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/** Version string. */
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2012-06-28 03:17:49 +00:00
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#define PROJECT_H_VERSION "$Id: project.h,v 1.171 2011/09/04 11:10:56 fabiankeil Exp $"
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2012-05-03 18:32:18 +00:00
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/*********************************************************************
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*
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* File : $Source: /cvsroot/ijbswa/current/project.h,v $
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*
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* Purpose : Defines data structures which are widely used in the
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* project. Does not define any variables or functions
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* (though it does declare some macros).
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*
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2012-06-28 03:17:49 +00:00
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* Copyright : Written by and Copyright (C) 2001-2010 the
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2012-05-03 18:32:18 +00:00
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* Privoxy team. http://www.privoxy.org/
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*
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* Based on the Internet Junkbuster originally written
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* by and Copyright (C) 1997 Anonymous Coders and
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* Junkbusters Corporation. http://www.junkbusters.com
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*
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* This program is free software; you can redistribute it
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* and/or modify it under the terms of the GNU General
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* Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will
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* be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A
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* PARTICULAR PURPOSE. See the GNU General Public
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* License for more details.
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*
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* The GNU General Public License should be included with
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* this file. If not, you can view it at
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* http://www.gnu.org/copyleft/gpl.html
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* or write to the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*********************************************************************/
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2012-06-28 03:17:49 +00:00
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2012-05-03 18:32:18 +00:00
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/* Declare struct FILE for vars and funcs. */
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#include <stdio.h>
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/* Need time_t for file_list */
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#include <time.h>
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/* Needed for pcre choice */
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#include "config.h"
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2012-06-28 03:17:49 +00:00
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/* Need for struct sockaddr_storage */
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#ifdef HAVE_RFC2553
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# ifndef _WIN32
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# include <netdb.h>
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# include <sys/socket.h>
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# else
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# include <stdint.h>
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# include <winsock2.h>
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# include <ws2tcpip.h>
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typedef unsigned short in_port_t;
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# endif
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#endif
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2012-05-03 18:32:18 +00:00
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/*
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* Include appropriate regular expression libraries.
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* Note that pcrs and pcre (native) are needed for cgi
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* and are included anyway.
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*/
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#ifdef STATIC_PCRE
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# include "pcre.h"
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#else
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# ifdef PCRE_H_IN_SUBDIR
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# include <pcre/pcre.h>
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# else
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# include <pcre.h>
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# endif
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#endif
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#ifdef STATIC_PCRS
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# include "pcrs.h"
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#else
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# include <pcrs.h>
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#endif
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#ifdef STATIC_PCRE
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# include "pcreposix.h"
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#else
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# ifdef PCRE_H_IN_SUBDIR
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# include <pcre/pcreposix.h>
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# else
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# include <pcreposix.h>
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# endif
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#endif
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#ifdef AMIGA
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#include "amiga.h"
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#endif /* def AMIGA */
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#ifdef _WIN32
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/*
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* I don't want to have to #include all this just for the declaration
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* of SOCKET. However, it looks like we have to...
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*/
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#ifndef STRICT
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#define STRICT
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#endif
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#include <windows.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef _WIN32
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typedef SOCKET jb_socket;
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#define JB_INVALID_SOCKET INVALID_SOCKET
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#else /* ndef _WIN32 */
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/**
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* The type used by sockets. On UNIX it's an int. Microsoft decided to
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* make it an unsigned.
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*/
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typedef int jb_socket;
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/**
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* The error value used for variables of type jb_socket. On UNIX this
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* is -1, however Microsoft decided to make socket handles unsigned, so
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* they use a different value.
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*/
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#define JB_INVALID_SOCKET (-1)
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#endif /* ndef _WIN32 */
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/**
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* A standard error code. This should be JB_ERR_OK or one of the JB_ERR_xxx
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* series of errors.
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*/
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typedef int jb_err;
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#define JB_ERR_OK 0 /**< Success, no error */
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#define JB_ERR_MEMORY 1 /**< Out of memory */
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#define JB_ERR_CGI_PARAMS 2 /**< Missing or corrupt CGI parameters */
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#define JB_ERR_FILE 3 /**< Error opening, reading or writing a file */
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#define JB_ERR_PARSE 4 /**< Error parsing file */
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2012-06-28 03:17:49 +00:00
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#define JB_ERR_MODIFIED 5 /**< File has been modified outside of the
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2012-05-03 18:32:18 +00:00
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CGI actions editor. */
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#define JB_ERR_COMPRESS 6 /**< Error on decompression */
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/**
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* This macro is used to free a pointer that may be NULL.
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* It also sets the variable to NULL after it's been freed.
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* The paramater should be a simple variable without side effects.
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*/
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#define freez(X) { if(X) { free((void*)X); X = NULL ; } }
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/**
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* Fix a problem with Solaris. There should be no effect on other
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* platforms.
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*
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* Solaris's isspace() is a macro which uses it's argument directly
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* as an array index. Therefore we need to make sure that high-bit
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* characters generate +ve values, and ideally we also want to make
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* the argument match the declared parameter type of "int".
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*
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* Note: Remember to #include <ctype.h> if you use these macros.
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*/
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#define ijb_toupper(__X) toupper((int)(unsigned char)(__X))
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#define ijb_tolower(__X) tolower((int)(unsigned char)(__X))
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2012-06-28 03:17:49 +00:00
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#define ijb_isspace(__X) isspace((int)(unsigned char)(__X))
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2012-05-03 18:32:18 +00:00
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/**
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* Use for statically allocated buffers if you have no other choice.
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* Remember to check the length of what you write into the buffer
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* - we don't want any buffer overflows!
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*/
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#define BUFFER_SIZE 5000
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/**
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* Max length of CGI parameters (arbitrary limit).
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*/
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#define CGI_PARAM_LEN_MAX 500U
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/**
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* Buffer size for capturing struct hostent data in the
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* gethostby(name|addr)_r library calls. Since we don't
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* loop over gethostbyname_r, the buffer must be sufficient
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2012-06-28 03:17:49 +00:00
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* to accommodate multiple IN A RRs, as used in DNS round robin
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2012-05-03 18:32:18 +00:00
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* load balancing. W3C's wwwlib uses 1K, so that should be
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* good enough for us, too.
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*/
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/**
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* XXX: Temporary doubled, for some configurations
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* 1K is still too small and we didn't get the
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* real fix ready for inclusion.
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*/
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#define HOSTENT_BUFFER_SIZE 2048
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/**
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* Do not use. Originally this was so that you can
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* say "while (FOREVER) { ...do something... }".
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* However, this gives a warning with some compilers (e.g. VC++).
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* Instead, use "for (;;) { ...do something... }".
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*/
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#define FOREVER 1
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/**
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2012-06-28 03:17:49 +00:00
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* Default TCP/IP address to listen on, as a string.
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* Set to "127.0.0.1:8118".
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2012-05-03 18:32:18 +00:00
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*/
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2012-06-28 03:17:49 +00:00
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#define HADDR_DEFAULT "127.0.0.1:8118"
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2012-05-03 18:32:18 +00:00
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/* Forward def for struct client_state */
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struct configuration_spec;
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/**
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* Entry in a linked list of strings.
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*/
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struct list_entry
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{
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/**
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* The string pointer. It must point to a dynamically malloc()ed
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* string or be NULL for the list functions to work. In the latter
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* case, just be careful next time you iterate through the list in
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* your own code.
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*/
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char *str;
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2012-06-28 03:17:49 +00:00
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2012-05-03 18:32:18 +00:00
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/** Next entry in the linked list, or NULL if no more. */
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struct list_entry *next;
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};
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/**
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* A header for a linked list of strings.
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*/
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struct list
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{
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/** First entry in the list, or NULL if the list is empty. */
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struct list_entry *first;
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/** Last entry in the list, or NULL if the list is empty. */
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struct list_entry *last;
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};
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/**
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* An entry in a map. This is a name=value pair.
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*/
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struct map_entry
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{
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/** The key for the map. */
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const char *name;
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/** The value associated with that key. */
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const char *value;
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/** The next map entry, or NULL if none. */
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struct map_entry *next;
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};
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/**
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* A map from a string to another string.
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* This is used for the paramaters passed in a HTTP GET request, and
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* to store the exports when the CGI interface is filling in a template.
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*/
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struct map
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{
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/** The first map entry, or NULL if the map is empty. */
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struct map_entry *first;
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/** The last map entry, or NULL if the map is empty. */
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struct map_entry *last;
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};
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/**
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* A HTTP request. This includes the method (GET, POST) and
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* the parsed URL.
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*
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* This is also used whenever we want to match a URL against a
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* URL pattern. This always contains the URL to match, and never
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* a URL pattern. (See struct url_spec).
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*/
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struct http_request
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{
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char *cmd; /**< Whole command line: method, URL, Version */
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char *ocmd; /**< Backup of original cmd for CLF logging */
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char *gpc; /**< HTTP method: GET, POST, ... */
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char *url; /**< The URL */
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char *ver; /**< Protocol version */
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int status; /**< HTTP Status */
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char *host; /**< Host part of URL */
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int port; /**< Port of URL or 80 (default) */
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char *path; /**< Path of URL */
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char *hostport; /**< host[:port] */
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int ssl; /**< Flag if protocol is https */
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char *host_ip_addr_str; /**< String with dotted decimal representation
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of host's IP. NULL before connect_to() */
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2012-06-28 03:17:49 +00:00
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#ifndef FEATURE_EXTENDED_HOST_PATTERNS
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2012-05-03 18:32:18 +00:00
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char *dbuffer; /**< Buffer with '\0'-delimited domain name. */
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char **dvec; /**< List of pointers to the strings in dbuffer. */
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int dcount; /**< How many parts to this domain? (length of dvec) */
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2012-06-28 03:17:49 +00:00
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#endif /* ndef FEATURE_EXTENDED_HOST_PATTERNS */
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2012-05-03 18:32:18 +00:00
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};
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/**
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* Reasons for generating a http_response instead of delivering
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* the requested resource. Mostly ordered the way they are checked
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* for in chat().
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*/
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2012-06-28 03:17:49 +00:00
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enum crunch_reason
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{
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UNSUPPORTED,
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BLOCKED,
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UNTRUSTED,
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REDIRECTED,
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CGI_CALL,
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NO_SUCH_DOMAIN,
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FORWARDING_FAILED,
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CONNECT_FAILED,
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OUT_OF_MEMORY,
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INTERNAL_ERROR,
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CONNECTION_TIMEOUT,
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NO_SERVER_DATA
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};
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2012-05-03 18:32:18 +00:00
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/**
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* Response generated by CGI, blocker, or error handler
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*/
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struct http_response
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{
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2012-06-28 03:17:49 +00:00
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enum crunch_reason crunch_reason; /**< Why the response was generated in the first place. */
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char *status; /**< HTTP status (string). */
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struct list headers[1]; /**< List of header lines. */
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char *head; /**< Formatted http response head. */
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size_t head_length; /**< Length of http response head. */
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char *body; /**< HTTP document body. */
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size_t content_length; /**< Length of body, REQUIRED if binary body. */
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int is_static; /**< Nonzero if the content will never change and
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should be cached by the browser (e.g. images). */
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2012-05-03 18:32:18 +00:00
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};
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/**
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* A URL or a tag pattern.
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*/
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struct url_spec
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{
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/** The string which was parsed to produce this url_spec.
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Used for debugging or display only. */
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char *spec;
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#ifdef FEATURE_EXTENDED_HOST_PATTERNS
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regex_t *host_regex;/**< Regex for host matching */
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#else
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char *dbuffer; /**< Buffer with '\0'-delimited domain name, or NULL to match all hosts. */
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char **dvec; /**< List of pointers to the strings in dbuffer. */
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int dcount; /**< How many parts to this domain? (length of dvec) */
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int unanchored; /**< Bitmap - flags are ANCHOR_LEFT and ANCHOR_RIGHT. */
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#endif /* defined FEATURE_EXTENDED_HOST_PATTERNS */
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|
|
|
char *port_list; /**< List of acceptable ports, or NULL to match all ports */
|
|
|
|
|
|
|
|
regex_t *preg; /**< Regex for matching path part */
|
|
|
|
regex_t *tag_regex; /**< Regex for matching tags */
|
|
|
|
};
|
|
|
|
|
|
|
|
/**
|
|
|
|
* If you declare a static url_spec, this is the value to initialize it to zero.
|
|
|
|
*/
|
|
|
|
#ifndef FEATURE_EXTENDED_HOST_PATTERNS
|
|
|
|
#define URL_SPEC_INITIALIZER { NULL, NULL, NULL, 0, 0, NULL, NULL, NULL }
|
|
|
|
#else
|
|
|
|
#define URL_SPEC_INITIALIZER { NULL, NULL, NULL, NULL, NULL }
|
|
|
|
#endif /* def FEATURE_EXTENDED_HOST_PATTERNS */
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Constant for host part matching in URLs. If set, indicates that the start of
|
|
|
|
* the pattern must match the start of the URL. E.g. this is not set for the
|
|
|
|
* pattern ".example.com", so that it will match both "example.com" and
|
|
|
|
* "www.example.com". It is set for the pattern "example.com", which makes it
|
|
|
|
* match "example.com" only, not "www.example.com".
|
|
|
|
*/
|
|
|
|
#define ANCHOR_LEFT 1
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Constant for host part matching in URLs. If set, indicates that the end of
|
|
|
|
* the pattern must match the end of the URL. E.g. this is not set for the
|
|
|
|
* pattern "ad.", so that it will match any host called "ad", irrespective
|
|
|
|
* of how many subdomains are in the fully-qualified domain name.
|
|
|
|
*/
|
|
|
|
#define ANCHOR_RIGHT 2
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* An I/O buffer. Holds a string which can be appended to, and can have data
|
|
|
|
* removed from the beginning.
|
|
|
|
*/
|
|
|
|
struct iob
|
|
|
|
{
|
|
|
|
char *buf; /**< Start of buffer */
|
|
|
|
char *cur; /**< Start of relevant data */
|
|
|
|
char *eod; /**< End of relevant data */
|
|
|
|
size_t size; /**< Size as malloc()ed */
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Return the number of bytes in the I/O buffer associated with the passed
|
|
|
|
* client_state pointer.
|
|
|
|
* May be zero.
|
|
|
|
*/
|
|
|
|
#define IOB_PEEK(CSP) ((CSP->iob->cur > CSP->iob->eod) ? (CSP->iob->eod - CSP->iob->cur) : 0)
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Remove any data in the I/O buffer associated with the passed
|
|
|
|
* client_state pointer.
|
|
|
|
*/
|
|
|
|
#define IOB_RESET(CSP) if(CSP->iob->buf) free(CSP->iob->buf); memset(CSP->iob, '\0', sizeof(CSP->iob));
|
|
|
|
|
|
|
|
/* Bits for csp->content_type bitmask: */
|
|
|
|
#define CT_TEXT 0x0001U /**< Suitable for pcrs filtering. */
|
|
|
|
#define CT_GIF 0x0002U /**< Suitable for GIF filtering. */
|
|
|
|
#define CT_TABOO 0x0004U /**< DO NOT filter, irrespective of other flags. */
|
|
|
|
|
|
|
|
/* Although these are not, strictly speaking, content types
|
|
|
|
* (they are content encodings), it is simple to handle them
|
|
|
|
* as such.
|
|
|
|
*/
|
|
|
|
#define CT_GZIP 0x0010U /**< gzip-compressed data. */
|
|
|
|
#define CT_DEFLATE 0x0020U /**< zlib-compressed data. */
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag to signal that the server declared the content type,
|
|
|
|
* so we can differentiate between unknown and undeclared
|
|
|
|
* content types.
|
|
|
|
*/
|
|
|
|
#define CT_DECLARED 0x0040U
|
|
|
|
|
|
|
|
/**
|
|
|
|
* The mask which includes all actions.
|
|
|
|
*/
|
|
|
|
#define ACTION_MASK_ALL (~0UL)
|
|
|
|
|
|
|
|
/**
|
|
|
|
* The most compatible set of actions - i.e. none.
|
|
|
|
*/
|
|
|
|
#define ACTION_MOST_COMPATIBLE 0x00000000UL
|
|
|
|
|
|
|
|
/** Action bitmap: Block the request. */
|
|
|
|
#define ACTION_BLOCK 0x00000001UL
|
|
|
|
/** Action bitmap: Deanimate if it's a GIF. */
|
|
|
|
#define ACTION_DEANIMATE 0x00000002UL
|
|
|
|
/** Action bitmap: Downgrade HTTP/1.1 to 1.0. */
|
|
|
|
#define ACTION_DOWNGRADE 0x00000004UL
|
|
|
|
/** Action bitmap: Fast redirects. */
|
|
|
|
#define ACTION_FAST_REDIRECTS 0x00000008UL
|
|
|
|
/** Action bitmap: Remove or add "X-Forwarded-For" header. */
|
|
|
|
#define ACTION_CHANGE_X_FORWARDED_FOR 0x00000010UL
|
|
|
|
/** Action bitmap: Hide "From" header. */
|
|
|
|
#define ACTION_HIDE_FROM 0x00000020UL
|
|
|
|
/** Action bitmap: Hide "Referer" header. (sic - follow HTTP, not English). */
|
|
|
|
#define ACTION_HIDE_REFERER 0x00000040UL
|
|
|
|
/** Action bitmap: Hide "User-Agent" and similar headers. */
|
|
|
|
#define ACTION_HIDE_USER_AGENT 0x00000080UL
|
|
|
|
/** Action bitmap: This is an image. */
|
|
|
|
#define ACTION_IMAGE 0x00000100UL
|
|
|
|
/** Action bitmap: Sets the image blocker. */
|
|
|
|
#define ACTION_IMAGE_BLOCKER 0x00000200UL
|
|
|
|
/** Action bitmap: Prevent compression. */
|
|
|
|
#define ACTION_NO_COMPRESSION 0x00000400UL
|
|
|
|
/** Action bitmap: Change cookies to session only cookies. */
|
|
|
|
#define ACTION_NO_COOKIE_KEEP 0x00000800UL
|
|
|
|
/** Action bitmap: Block rending cookies. */
|
|
|
|
#define ACTION_NO_COOKIE_READ 0x00001000UL
|
|
|
|
/** Action bitmap: Block setting cookies. */
|
|
|
|
#define ACTION_NO_COOKIE_SET 0x00002000UL
|
|
|
|
/** Action bitmap: Override the forward settings in the config file */
|
|
|
|
#define ACTION_FORWARD_OVERRIDE 0x00004000UL
|
|
|
|
/** Action bitmap: Block as empty document */
|
|
|
|
#define ACTION_HANDLE_AS_EMPTY_DOCUMENT 0x00008000UL
|
|
|
|
/** Action bitmap: Limit CONNECT requests to safe ports. */
|
|
|
|
#define ACTION_LIMIT_CONNECT 0x00010000UL
|
|
|
|
/** Action bitmap: Redirect request. */
|
|
|
|
#define ACTION_REDIRECT 0x00020000UL
|
|
|
|
/** Action bitmap: Crunch or modify "if-modified-since" header. */
|
|
|
|
#define ACTION_HIDE_IF_MODIFIED_SINCE 0x00040000UL
|
|
|
|
/** Action bitmap: Overwrite Content-Type header. */
|
|
|
|
#define ACTION_CONTENT_TYPE_OVERWRITE 0x00080000UL
|
|
|
|
/** Action bitmap: Crunch specified server header. */
|
|
|
|
#define ACTION_CRUNCH_SERVER_HEADER 0x00100000UL
|
|
|
|
/** Action bitmap: Crunch specified client header */
|
|
|
|
#define ACTION_CRUNCH_CLIENT_HEADER 0x00200000UL
|
|
|
|
/** Action bitmap: Enable text mode by force */
|
|
|
|
#define ACTION_FORCE_TEXT_MODE 0x00400000UL
|
|
|
|
/** Action bitmap: Enable text mode by force */
|
|
|
|
#define ACTION_CRUNCH_IF_NONE_MATCH 0x00800000UL
|
2012-06-28 03:17:49 +00:00
|
|
|
/** Action bitmap: Enable content-disposition crunching */
|
2012-05-03 18:32:18 +00:00
|
|
|
#define ACTION_HIDE_CONTENT_DISPOSITION 0x01000000UL
|
|
|
|
/** Action bitmap: Replace or block Last-Modified header */
|
|
|
|
#define ACTION_OVERWRITE_LAST_MODIFIED 0x02000000UL
|
|
|
|
/** Action bitmap: Replace or block Accept-Language header */
|
|
|
|
#define ACTION_HIDE_ACCEPT_LANGUAGE 0x04000000UL
|
|
|
|
|
|
|
|
|
|
|
|
/** Action string index: How to deanimate GIFs */
|
|
|
|
#define ACTION_STRING_DEANIMATE 0
|
|
|
|
/** Action string index: Replacement for "From:" header */
|
|
|
|
#define ACTION_STRING_FROM 1
|
|
|
|
/** Action string index: How to block images */
|
|
|
|
#define ACTION_STRING_IMAGE_BLOCKER 2
|
|
|
|
/** Action string index: Replacement for "Referer:" header */
|
|
|
|
#define ACTION_STRING_REFERER 3
|
|
|
|
/** Action string index: Replacement for "User-Agent:" header */
|
|
|
|
#define ACTION_STRING_USER_AGENT 4
|
|
|
|
/** Action string index: Legal CONNECT ports. */
|
|
|
|
#define ACTION_STRING_LIMIT_CONNECT 5
|
|
|
|
/** Action string index: Server headers containing this pattern are crunched*/
|
|
|
|
#define ACTION_STRING_SERVER_HEADER 6
|
|
|
|
/** Action string index: Client headers containing this pattern are crunched*/
|
|
|
|
#define ACTION_STRING_CLIENT_HEADER 7
|
|
|
|
/** Action string index: Replacement for the "Accept-Language:" header*/
|
|
|
|
#define ACTION_STRING_LANGUAGE 8
|
|
|
|
/** Action string index: Replacement for the "Content-Type:" header*/
|
|
|
|
#define ACTION_STRING_CONTENT_TYPE 9
|
2012-06-28 03:17:49 +00:00
|
|
|
/** Action string index: Replacement for the "content-disposition:" header*/
|
2012-05-03 18:32:18 +00:00
|
|
|
#define ACTION_STRING_CONTENT_DISPOSITION 10
|
|
|
|
/** Action string index: Replacement for the "If-Modified-Since:" header*/
|
|
|
|
#define ACTION_STRING_IF_MODIFIED_SINCE 11
|
|
|
|
/** Action string index: Replacement for the "Last-Modified:" header. */
|
|
|
|
#define ACTION_STRING_LAST_MODIFIED 12
|
|
|
|
/** Action string index: Redirect URL */
|
|
|
|
#define ACTION_STRING_REDIRECT 13
|
|
|
|
/** Action string index: Decode before redirect? */
|
|
|
|
#define ACTION_STRING_FAST_REDIRECTS 14
|
|
|
|
/** Action string index: Overriding forward rule. */
|
|
|
|
#define ACTION_STRING_FORWARD_OVERRIDE 15
|
|
|
|
/** Action string index: Reason for the block. */
|
|
|
|
#define ACTION_STRING_BLOCK 16
|
|
|
|
/** Action string index: what to do with the "X-Forwarded-For" header. */
|
|
|
|
#define ACTION_STRING_CHANGE_X_FORWARDED_FOR 17
|
|
|
|
/** Number of string actions. */
|
|
|
|
#define ACTION_STRING_COUNT 18
|
|
|
|
|
|
|
|
|
|
|
|
/* To make the ugly hack in sed easier to understand */
|
|
|
|
#define CHECK_EVERY_HEADER_REMAINING 0
|
|
|
|
|
|
|
|
|
|
|
|
/** Index into current_action_spec::multi[] for headers to add. */
|
|
|
|
#define ACTION_MULTI_ADD_HEADER 0
|
|
|
|
/** Index into current_action_spec::multi[] for content filters to apply. */
|
|
|
|
#define ACTION_MULTI_FILTER 1
|
|
|
|
/** Index into current_action_spec::multi[] for server-header filters to apply. */
|
|
|
|
#define ACTION_MULTI_SERVER_HEADER_FILTER 2
|
|
|
|
/** Index into current_action_spec::multi[] for client-header filters to apply. */
|
|
|
|
#define ACTION_MULTI_CLIENT_HEADER_FILTER 3
|
|
|
|
/** Index into current_action_spec::multi[] for client-header tags to apply. */
|
|
|
|
#define ACTION_MULTI_CLIENT_HEADER_TAGGER 4
|
|
|
|
/** Index into current_action_spec::multi[] for server-header tags to apply. */
|
|
|
|
#define ACTION_MULTI_SERVER_HEADER_TAGGER 5
|
|
|
|
/** Number of multi-string actions. */
|
|
|
|
#define ACTION_MULTI_COUNT 6
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* This structure contains a list of actions to apply to a URL.
|
|
|
|
* It only contains positive instructions - no "-" options.
|
|
|
|
* It is not used to store the actions list itself, only for
|
|
|
|
* url_actions() to return the current values.
|
|
|
|
*/
|
|
|
|
struct current_action_spec
|
|
|
|
{
|
|
|
|
/** Actions to apply. A bit set to "1" means perform the action. */
|
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Paramaters for those actions that require them.
|
|
|
|
* Each entry is valid if & only if the corresponding entry in "flags" is
|
|
|
|
* set.
|
|
|
|
*/
|
|
|
|
char * string[ACTION_STRING_COUNT];
|
|
|
|
|
|
|
|
/** Lists of strings for multi-string actions. */
|
|
|
|
struct list multi[ACTION_MULTI_COUNT][1];
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* This structure contains a set of changes to actions.
|
|
|
|
* It can contain both positive and negative instructions.
|
|
|
|
* It is used to store an entry in the actions list.
|
|
|
|
*/
|
|
|
|
struct action_spec
|
|
|
|
{
|
|
|
|
unsigned long mask; /**< Actions to keep. A bit set to "0" means remove action. */
|
|
|
|
unsigned long add; /**< Actions to add. A bit set to "1" means add action. */
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Paramaters for those actions that require them.
|
|
|
|
* Each entry is valid if & only if the corresponding entry in "flags" is
|
|
|
|
* set.
|
|
|
|
*/
|
|
|
|
char * string[ACTION_STRING_COUNT];
|
|
|
|
|
|
|
|
/** Lists of strings to remove, for multi-string actions. */
|
|
|
|
struct list multi_remove[ACTION_MULTI_COUNT][1];
|
|
|
|
|
|
|
|
/** If nonzero, remove *all* strings from the multi-string action. */
|
|
|
|
int multi_remove_all[ACTION_MULTI_COUNT];
|
|
|
|
|
|
|
|
/** Lists of strings to add, for multi-string actions. */
|
|
|
|
struct list multi_add[ACTION_MULTI_COUNT][1];
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* This structure is used to store action files.
|
|
|
|
*
|
|
|
|
* It contains an URL or tag pattern, and the changes to
|
|
|
|
* the actions. It's a linked list and should only be
|
|
|
|
* free'd through unload_actions_file() unless there's
|
|
|
|
* only a single entry.
|
|
|
|
*/
|
|
|
|
struct url_actions
|
|
|
|
{
|
|
|
|
struct url_spec url[1]; /**< The URL or tag pattern. */
|
|
|
|
|
|
|
|
struct action_spec *action; /**< Action settings that might be shared with
|
|
|
|
the list entry before or after the current
|
|
|
|
one and can't be free'd willy nilly. */
|
|
|
|
|
|
|
|
struct url_actions *next; /**< Next action section in file, or NULL. */
|
|
|
|
};
|
|
|
|
|
|
|
|
|
2012-06-28 03:17:49 +00:00
|
|
|
/*
|
|
|
|
* Structure to hold the server socket and the information
|
|
|
|
* required to make sure we only reuse the connection if
|
|
|
|
* the host and forwarding settings are the same.
|
|
|
|
*/
|
|
|
|
struct reusable_connection
|
|
|
|
{
|
|
|
|
jb_socket sfd;
|
|
|
|
int in_use;
|
|
|
|
time_t timestamp; /* XXX: rename? */
|
|
|
|
|
|
|
|
time_t request_sent;
|
|
|
|
time_t response_received;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Number of seconds after which this
|
|
|
|
* connection will no longer be reused.
|
|
|
|
*/
|
|
|
|
unsigned int keep_alive_timeout;
|
|
|
|
|
|
|
|
char *host;
|
|
|
|
int port;
|
|
|
|
int forwarder_type;
|
|
|
|
char *gateway_host;
|
|
|
|
int gateway_port;
|
|
|
|
char *forward_host;
|
|
|
|
int forward_port;
|
|
|
|
};
|
|
|
|
|
|
|
|
|
2012-05-03 18:32:18 +00:00
|
|
|
/*
|
|
|
|
* Flags for use in csp->flags
|
|
|
|
*/
|
2012-06-28 03:17:49 +00:00
|
|
|
|
2012-05-03 18:32:18 +00:00
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if this client is processing data.
|
|
|
|
* Cleared when the thread associated with this structure dies.
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_ACTIVE 0x01U
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if the server's reply is in "chunked"
|
|
|
|
* transfer encoding
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_CHUNKED 0x02U
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if this request was enforced, although it would
|
|
|
|
* normally have been blocked.
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_FORCED 0x04U
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if any modification to the body was done.
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_MODIFIED 0x08U
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if request was blocked.
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_REJECTED 0x10U
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if we are toggled on (FEATURE_TOGGLE).
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_TOGGLED_ON 0x20U
|
|
|
|
|
2012-06-28 03:17:49 +00:00
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if we answered the request ourselve.
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_CRUNCHED 0x40U
|
|
|
|
|
2012-05-03 18:32:18 +00:00
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if an acceptable Connection header
|
2012-06-28 03:17:49 +00:00
|
|
|
* has already been set by the client.
|
2012-05-03 18:32:18 +00:00
|
|
|
*/
|
|
|
|
#define CSP_FLAG_CLIENT_CONNECTION_HEADER_SET 0x00000040U
|
|
|
|
|
|
|
|
/**
|
2012-06-28 03:17:49 +00:00
|
|
|
* Flag for csp->flags: Set if an acceptable Connection header
|
|
|
|
* has already been set by the server.
|
2012-05-03 18:32:18 +00:00
|
|
|
*/
|
2012-06-28 03:17:49 +00:00
|
|
|
#define CSP_FLAG_SERVER_CONNECTION_HEADER_SET 0x00000080U
|
2012-05-03 18:32:18 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Signals header parsers whether they
|
|
|
|
* are parsing server or client headers.
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_CLIENT_HEADER_PARSING_DONE 0x00000100U
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if adding the Host: header
|
|
|
|
* isn't necessary.
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_HOST_HEADER_IS_SET 0x00000200U
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if filtering is disabled by X-Filter: No
|
|
|
|
* XXX: As we now have tags we might as well ditch this.
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_NO_FILTERING 0x00000400U
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set the client IP has appended to
|
|
|
|
* an already existing X-Forwarded-For header in which case
|
|
|
|
* no new header has to be generated.
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_X_FORWARDED_FOR_APPENDED 0x00000800U
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if the server wants to keep
|
|
|
|
* the connection alive.
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_SERVER_CONNECTION_KEEP_ALIVE 0x00001000U
|
|
|
|
|
|
|
|
#ifdef FEATURE_CONNECTION_KEEP_ALIVE
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if the server specified the
|
|
|
|
* content length.
|
|
|
|
*/
|
2012-06-28 03:17:49 +00:00
|
|
|
#define CSP_FLAG_SERVER_CONTENT_LENGTH_SET 0x00002000U
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if we know the content length,
|
|
|
|
* either because the server set it, or we figured it out
|
|
|
|
* on our own.
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_CONTENT_LENGTH_SET 0x00004000U
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if the client wants to keep
|
|
|
|
* the connection alive.
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_CLIENT_CONNECTION_KEEP_ALIVE 0x00008000U
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if we think we got the whole
|
|
|
|
* client request and shouldn't read any additional data
|
|
|
|
* coming from the client until the current request has
|
|
|
|
* been dealt with.
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_CLIENT_REQUEST_COMPLETELY_READ 0x00010000U
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if the server promised us to
|
|
|
|
* keep the connection open for a known number of seconds.
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_SERVER_KEEP_ALIVE_TIMEOUT_SET 0x00020000U
|
|
|
|
|
2012-05-03 18:32:18 +00:00
|
|
|
#endif /* def FEATURE_CONNECTION_KEEP_ALIVE */
|
|
|
|
|
2012-06-28 03:17:49 +00:00
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if we think we can't reuse
|
|
|
|
* the server socket.
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_SERVER_SOCKET_TAINTED 0x00040000U
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if the Proxy-Connection header
|
|
|
|
* is among the server headers.
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_SERVER_PROXY_CONNECTION_HEADER_SET 0x00080000U
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if the client reused its connection.
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_REUSED_CLIENT_CONNECTION 0x00100000U
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if the supports deflate compression.
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_CLIENT_SUPPORTS_DEFLATE 0x00200000U
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for csp->flags: Set if the content has been deflated by Privoxy
|
|
|
|
*/
|
|
|
|
#define CSP_FLAG_BUFFERED_CONTENT_DEFLATED 0x00400000U
|
|
|
|
|
|
|
|
|
2012-05-03 18:32:18 +00:00
|
|
|
/*
|
|
|
|
* Flags for use in return codes of child processes
|
|
|
|
*/
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for process return code: Set if exiting porcess has been toggled
|
|
|
|
* during its lifetime.
|
|
|
|
*/
|
|
|
|
#define RC_FLAG_TOGGLED 0x10
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Flag for process return code: Set if exiting porcess has blocked its
|
|
|
|
* request.
|
|
|
|
*/
|
|
|
|
#define RC_FLAG_BLOCKED 0x20
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Maximum number of actions/filter files. This limit is arbitrary - it's just used
|
|
|
|
* to size an array.
|
|
|
|
*/
|
|
|
|
#define MAX_AF_FILES 10
|
|
|
|
|
2012-06-28 03:17:49 +00:00
|
|
|
/**
|
|
|
|
* Maximum number of sockets to listen to. This limit is arbitrary - it's just used
|
|
|
|
* to size an array.
|
|
|
|
*/
|
|
|
|
#define MAX_LISTENING_SOCKETS 10
|
|
|
|
|
2012-05-03 18:32:18 +00:00
|
|
|
/**
|
|
|
|
* The state of a Privoxy processing thread.
|
|
|
|
*/
|
|
|
|
struct client_state
|
|
|
|
{
|
|
|
|
/** The proxy's configuration */
|
|
|
|
struct configuration_spec * config;
|
|
|
|
|
|
|
|
/** The actions to perform on the current request */
|
|
|
|
struct current_action_spec action[1];
|
|
|
|
|
|
|
|
/** socket to talk to client (web browser) */
|
|
|
|
jb_socket cfd;
|
|
|
|
|
2012-06-28 03:17:49 +00:00
|
|
|
/** current connection to the server (may go through a proxy) */
|
|
|
|
struct reusable_connection server_connection;
|
2012-05-03 18:32:18 +00:00
|
|
|
|
|
|
|
/** Multi-purpose flag container, see CSP_FLAG_* above */
|
|
|
|
unsigned int flags;
|
|
|
|
|
|
|
|
/** Client PC's IP address, as reported by the accept() function.
|
|
|
|
As a string. */
|
|
|
|
char *ip_addr_str;
|
2012-06-28 03:17:49 +00:00
|
|
|
#ifdef HAVE_RFC2553
|
|
|
|
/** Client PC's TCP address, as reported by the accept() function.
|
|
|
|
As a sockaddr. */
|
|
|
|
struct sockaddr_storage tcp_addr;
|
|
|
|
#else
|
2012-05-03 18:32:18 +00:00
|
|
|
/** Client PC's IP address, as reported by the accept() function.
|
|
|
|
As a number. */
|
|
|
|
unsigned long ip_addr_long;
|
2012-06-28 03:17:49 +00:00
|
|
|
#endif /* def HAVE_RFC2553 */
|
2012-05-03 18:32:18 +00:00
|
|
|
|
|
|
|
/** The URL that was requested */
|
|
|
|
struct http_request http[1];
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The final forwarding settings.
|
|
|
|
* XXX: Currently this is only used for forward-override,
|
|
|
|
* so we can free the space in sweep.
|
|
|
|
*/
|
|
|
|
struct forward_spec * fwd;
|
|
|
|
|
|
|
|
/** An I/O buffer used for buffering data read from the network */
|
|
|
|
struct iob iob[1];
|
|
|
|
|
|
|
|
/** List of all headers for this request */
|
|
|
|
struct list headers[1];
|
|
|
|
|
|
|
|
/** List of all tags that apply to this request */
|
|
|
|
struct list tags[1];
|
|
|
|
|
|
|
|
/** MIME-Type key, see CT_* above */
|
|
|
|
unsigned int content_type;
|
|
|
|
|
|
|
|
/** Actions files associated with this client */
|
|
|
|
struct file_list *actions_list[MAX_AF_FILES];
|
|
|
|
|
|
|
|
/** pcrs job files. */
|
|
|
|
struct file_list *rlist[MAX_AF_FILES];
|
|
|
|
|
|
|
|
/** Length after content modification. */
|
|
|
|
unsigned long long content_length;
|
|
|
|
|
|
|
|
#ifdef FEATURE_CONNECTION_KEEP_ALIVE
|
2012-06-28 03:17:49 +00:00
|
|
|
/* XXX: is this the right location? */
|
|
|
|
|
2012-05-03 18:32:18 +00:00
|
|
|
/** Expected length of content after which we
|
|
|
|
* should stop reading from the server socket.
|
|
|
|
*/
|
|
|
|
unsigned long long expected_content_length;
|
2012-06-28 03:17:49 +00:00
|
|
|
|
|
|
|
/** Expected length of content after which we
|
|
|
|
* should stop reading from the client socket.
|
|
|
|
*/
|
|
|
|
unsigned long long expected_client_content_length;
|
2012-05-03 18:32:18 +00:00
|
|
|
#endif /* def FEATURE_CONNECTION_KEEP_ALIVE */
|
|
|
|
|
|
|
|
#ifdef FEATURE_TRUST
|
|
|
|
|
|
|
|
/** Trust file. */
|
|
|
|
struct file_list *tlist;
|
|
|
|
|
|
|
|
#endif /* def FEATURE_TRUST */
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Failure reason to embedded in the CGI error page,
|
|
|
|
* or NULL. Currently only used for socks errors.
|
|
|
|
*/
|
|
|
|
char *error_message;
|
|
|
|
};
|
|
|
|
|
2012-06-28 03:17:49 +00:00
|
|
|
/**
|
|
|
|
* List of client states so the main thread can keep
|
|
|
|
* track of them and garbage collect their resources.
|
|
|
|
*/
|
|
|
|
struct client_states
|
|
|
|
{
|
|
|
|
struct client_states *next;
|
|
|
|
struct client_state csp;
|
|
|
|
};
|
2012-05-03 18:32:18 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* A function to add a header
|
|
|
|
*/
|
|
|
|
typedef jb_err (*add_header_func_ptr)(struct client_state *);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* A function to process a header
|
|
|
|
*/
|
|
|
|
typedef jb_err (*parser_func_ptr )(struct client_state *, char **);
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* List of available CGI functions.
|
|
|
|
*/
|
|
|
|
struct cgi_dispatcher
|
|
|
|
{
|
|
|
|
/** The URL of the CGI, relative to the CGI root. */
|
|
|
|
const char * const name;
|
|
|
|
|
|
|
|
/** The handler function for the CGI */
|
|
|
|
jb_err (* const handler)(struct client_state *csp, struct http_response *rsp, const struct map *parameters);
|
|
|
|
|
|
|
|
/** The description of the CGI, to appear on the main menu, or NULL to hide it. */
|
|
|
|
const char * const description;
|
|
|
|
|
|
|
|
/** A flag that indicates whether unintentional calls to this CGI can cause damage */
|
|
|
|
int harmless;
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* A data file used by Privoxy. Kept in a linked list.
|
|
|
|
*/
|
|
|
|
struct file_list
|
|
|
|
{
|
|
|
|
/**
|
|
|
|
* This is a pointer to the data structures associated with the file.
|
|
|
|
* Read-only once the structure has been created.
|
|
|
|
*/
|
|
|
|
void *f;
|
|
|
|
|
|
|
|
/**
|
|
|
|
* The unloader function.
|
|
|
|
* Normally NULL. When we are finished with file (i.e. when we have
|
|
|
|
* loaded a new one), set to a pointer to an unloader function.
|
|
|
|
* Unloader will be called by sweep() (called from main loop) when
|
|
|
|
* all clients using this file are done. This prevents threading
|
|
|
|
* problems.
|
|
|
|
*/
|
|
|
|
void (*unloader)(void *);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Used internally by sweep(). Do not access from elsewhere.
|
|
|
|
*/
|
|
|
|
int active;
|
|
|
|
|
|
|
|
/**
|
|
|
|
* File last-modified time, so we can check if file has been changed.
|
|
|
|
* Read-only once the structure has been created.
|
|
|
|
*/
|
|
|
|
time_t lastmodified;
|
2012-06-28 03:17:49 +00:00
|
|
|
|
2012-05-03 18:32:18 +00:00
|
|
|
/**
|
|
|
|
* The full filename.
|
|
|
|
*/
|
|
|
|
char * filename;
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Pointer to next entry in the linked list of all "file_list"s.
|
|
|
|
* This linked list is so that sweep() can navigate it.
|
|
|
|
* Since sweep() can remove items from the list, we must be careful
|
|
|
|
* to only access this value from main thread (when we know sweep
|
|
|
|
* won't be running).
|
|
|
|
*/
|
|
|
|
struct file_list *next;
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
#ifdef FEATURE_TRUST
|
|
|
|
|
|
|
|
/**
|
|
|
|
* The format of a trust file when loaded into memory.
|
|
|
|
*/
|
|
|
|
struct block_spec
|
|
|
|
{
|
|
|
|
struct url_spec url[1]; /**< The URL pattern */
|
|
|
|
int reject; /**< FIXME: Please document this! */
|
|
|
|
struct block_spec *next; /**< Next entry in linked list */
|
|
|
|
};
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Arbitrary limit for the number of trusted referrers.
|
|
|
|
*/
|
|
|
|
#define MAX_TRUSTED_REFERRERS 512
|
|
|
|
|
|
|
|
#endif /* def FEATURE_TRUST */
|
|
|
|
|
2012-06-28 03:17:49 +00:00
|
|
|
enum forwarder_type {
|
|
|
|
/**< Don't use a SOCKS server */
|
|
|
|
SOCKS_NONE = 0,
|
|
|
|
/**< original SOCKS 4 protocol */
|
|
|
|
SOCKS_4 = 40,
|
|
|
|
/**< SOCKS 4A, DNS resolution is done by the SOCKS server */
|
|
|
|
SOCKS_4A = 41,
|
|
|
|
/**< SOCKS 5 with hostnames, DNS resolution is done by the SOCKS server */
|
|
|
|
SOCKS_5 = 50,
|
|
|
|
};
|
2012-05-03 18:32:18 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* How to forward a connection to a parent proxy.
|
|
|
|
*/
|
|
|
|
struct forward_spec
|
|
|
|
{
|
|
|
|
/** URL pattern that this forward_spec is for. */
|
|
|
|
struct url_spec url[1];
|
|
|
|
|
|
|
|
/** Connection type. Must be SOCKS_NONE, SOCKS_4, SOCKS_4A or SOCKS_5. */
|
2012-06-28 03:17:49 +00:00
|
|
|
enum forwarder_type type;
|
2012-05-03 18:32:18 +00:00
|
|
|
|
|
|
|
/** SOCKS server hostname. Only valid if "type" is SOCKS_4 or SOCKS_4A. */
|
|
|
|
char *gateway_host;
|
|
|
|
|
|
|
|
/** SOCKS server port. */
|
|
|
|
int gateway_port;
|
|
|
|
|
|
|
|
/** Parent HTTP proxy hostname, or NULL for none. */
|
|
|
|
char *forward_host;
|
|
|
|
|
|
|
|
/** Parent HTTP proxy port. */
|
|
|
|
int forward_port;
|
|
|
|
|
|
|
|
/** Next entry in the linked list. */
|
|
|
|
struct forward_spec *next;
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Initializer for a static struct forward_spec.
|
|
|
|
*/
|
|
|
|
#define FORWARD_SPEC_INITIALIZER { { URL_SPEC_INITIALIZER }, 0, NULL, 0, NULL, 0, NULL }
|
|
|
|
|
|
|
|
/* Supported filter types */
|
2012-06-28 03:17:49 +00:00
|
|
|
enum filter_type
|
|
|
|
{
|
|
|
|
FT_CONTENT_FILTER = 0,
|
|
|
|
FT_CLIENT_HEADER_FILTER = 1,
|
|
|
|
FT_SERVER_HEADER_FILTER = 2,
|
|
|
|
FT_CLIENT_HEADER_TAGGER = 3,
|
|
|
|
FT_SERVER_HEADER_TAGGER = 4,
|
|
|
|
};
|
2012-05-03 18:32:18 +00:00
|
|
|
#define MAX_FILTER_TYPES 5
|
|
|
|
|
|
|
|
/**
|
|
|
|
* This struct represents one filter (one block) from
|
|
|
|
* the re_filterfile. If there is more than one filter
|
|
|
|
* in the file, the file will be represented by a
|
|
|
|
* chained list of re_filterfile specs.
|
|
|
|
*/
|
|
|
|
struct re_filterfile_spec
|
|
|
|
{
|
|
|
|
char *name; /**< Name from FILTER: statement in re_filterfile. */
|
|
|
|
char *description; /**< Description from FILTER: statement in re_filterfile. */
|
|
|
|
struct list patterns[1]; /**< The patterns from the re_filterfile. */
|
|
|
|
pcrs_job *joblist; /**< The resulting compiled pcrs_jobs. */
|
2012-06-28 03:17:49 +00:00
|
|
|
enum filter_type type; /**< Filter type (content, client-header, server-header). */
|
2012-05-03 18:32:18 +00:00
|
|
|
int dynamic; /**< Set to one if the pattern might contain variables
|
|
|
|
and has to be recompiled for every request. */
|
|
|
|
struct re_filterfile_spec *next; /**< The pointer for chaining. */
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
#ifdef FEATURE_ACL
|
|
|
|
|
|
|
|
#define ACL_PERMIT 1 /**< Accept connection request */
|
|
|
|
#define ACL_DENY 2 /**< Reject connection request */
|
|
|
|
|
|
|
|
/**
|
|
|
|
* An IP address pattern. Used to specify networks in the ACL.
|
|
|
|
*/
|
|
|
|
struct access_control_addr
|
|
|
|
{
|
2012-06-28 03:17:49 +00:00
|
|
|
#ifdef HAVE_RFC2553
|
|
|
|
struct sockaddr_storage addr; /* <The TCP address in network order. */
|
|
|
|
struct sockaddr_storage mask; /* <The TCP mask in network order. */
|
|
|
|
#else
|
2012-05-03 18:32:18 +00:00
|
|
|
unsigned long addr; /**< The IP address as an integer. */
|
|
|
|
unsigned long mask; /**< The network mask as an integer. */
|
|
|
|
unsigned long port; /**< The port number. */
|
2012-06-28 03:17:49 +00:00
|
|
|
#endif /* HAVE_RFC2553 */
|
2012-05-03 18:32:18 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
/**
|
|
|
|
* An access control list (ACL) entry.
|
|
|
|
*
|
|
|
|
* This is a linked list.
|
|
|
|
*/
|
|
|
|
struct access_control_list
|
|
|
|
{
|
|
|
|
struct access_control_addr src[1]; /**< Client IP address */
|
|
|
|
struct access_control_addr dst[1]; /**< Website or parent proxy IP address */
|
2012-06-28 03:17:49 +00:00
|
|
|
#ifdef HAVE_RFC2553
|
|
|
|
int wildcard_dst; /** < dst address is wildcard */
|
|
|
|
#endif
|
2012-05-03 18:32:18 +00:00
|
|
|
|
|
|
|
short action; /**< ACL_PERMIT or ACL_DENY */
|
|
|
|
struct access_control_list *next; /**< The next entry in the ACL. */
|
|
|
|
};
|
|
|
|
|
|
|
|
#endif /* def FEATURE_ACL */
|
|
|
|
|
|
|
|
|
|
|
|
/** Maximum number of loaders (actions, re_filter, ...) */
|
|
|
|
#define NLOADERS 8
|
|
|
|
|
|
|
|
|
|
|
|
/** configuration_spec::feature_flags: CGI actions editor. */
|
|
|
|
#define RUNTIME_FEATURE_CGI_EDIT_ACTIONS 1U
|
|
|
|
|
|
|
|
/** configuration_spec::feature_flags: Web-based toggle. */
|
|
|
|
#define RUNTIME_FEATURE_CGI_TOGGLE 2U
|
|
|
|
|
|
|
|
/** configuration_spec::feature_flags: HTTP-header-based toggle. */
|
|
|
|
#define RUNTIME_FEATURE_HTTP_TOGGLE 4U
|
|
|
|
|
|
|
|
/** configuration_spec::feature_flags: Split large forms to limit the number of GET arguments. */
|
|
|
|
#define RUNTIME_FEATURE_SPLIT_LARGE_FORMS 8U
|
|
|
|
|
|
|
|
/** configuration_spec::feature_flags: Check the host header for requests with host-less request lines. */
|
|
|
|
#define RUNTIME_FEATURE_ACCEPT_INTERCEPTED_REQUESTS 16U
|
|
|
|
|
|
|
|
/** configuration_spec::feature_flags: Don't allow to circumvent blocks with the force prefix. */
|
|
|
|
#define RUNTIME_FEATURE_ENFORCE_BLOCKS 32U
|
|
|
|
|
|
|
|
/** configuration_spec::feature_flags: Allow to block or redirect CGI requests. */
|
|
|
|
#define RUNTIME_FEATURE_CGI_CRUNCHING 64U
|
|
|
|
|
|
|
|
/** configuration_spec::feature_flags: Try to keep the connection to the server alive. */
|
|
|
|
#define RUNTIME_FEATURE_CONNECTION_KEEP_ALIVE 128U
|
|
|
|
|
2012-06-28 03:17:49 +00:00
|
|
|
/** configuration_spec::feature_flags: Share outgoing connections between different client connections. */
|
|
|
|
#define RUNTIME_FEATURE_CONNECTION_SHARING 256U
|
|
|
|
|
|
|
|
/** configuration_spec::feature_flags: Pages blocked with +handle-as-empty-doc get a return status of 200 OK. */
|
|
|
|
#define RUNTIME_FEATURE_EMPTY_DOC_RETURNS_OK 512U
|
|
|
|
|
|
|
|
/** configuration_spec::feature_flags: Buffered content is sent compressed if the client supports it. */
|
|
|
|
#define RUNTIME_FEATURE_COMPRESSION 1024U
|
|
|
|
|
2012-05-03 18:32:18 +00:00
|
|
|
/**
|
|
|
|
* Data loaded from the configuration file.
|
|
|
|
*
|
|
|
|
* (Anomaly: toggle is still handled through a global, not this structure)
|
|
|
|
*/
|
|
|
|
struct configuration_spec
|
|
|
|
{
|
|
|
|
/** What to log */
|
|
|
|
int debug;
|
2012-06-28 03:17:49 +00:00
|
|
|
|
2012-05-03 18:32:18 +00:00
|
|
|
/** Nonzero to enable multithreading. */
|
|
|
|
int multi_threaded;
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Bitmask of features that can be enabled/disabled through the config
|
|
|
|
* file. Currently defined bits:
|
|
|
|
*
|
|
|
|
* - RUNTIME_FEATURE_CGI_EDIT_ACTIONS
|
|
|
|
* - RUNTIME_FEATURE_CGI_TOGGLE
|
|
|
|
* - RUNTIME_FEATURE_HTTP_TOGGLE
|
|
|
|
* - RUNTIME_FEATURE_SPLIT_LARGE_FORMS
|
2012-06-28 03:17:49 +00:00
|
|
|
* - RUNTIME_FEATURE_ACCEPT_INTERCEPTED_REQUESTS
|
|
|
|
* - RUNTIME_FEATURE_ENFORCE_BLOCKS
|
|
|
|
* - RUNTIME_FEATURE_CGI_CRUNCHING
|
|
|
|
* - RUNTIME_FEATURE_CONNECTION_KEEP_ALIVE
|
|
|
|
* - RUNTIME_FEATURE_CONNECTION_SHARING
|
|
|
|
* - RUNTIME_FEATURE_EMPTY_DOC_RETURNS_OK
|
2012-05-03 18:32:18 +00:00
|
|
|
*/
|
|
|
|
unsigned feature_flags;
|
|
|
|
|
|
|
|
/** The log file name. */
|
|
|
|
const char *logfile;
|
|
|
|
|
|
|
|
/** The config file directory. */
|
|
|
|
const char *confdir;
|
|
|
|
|
|
|
|
/** The directory for customized CGI templates. */
|
|
|
|
const char *templdir;
|
|
|
|
|
|
|
|
/** The log file directory. */
|
|
|
|
const char *logdir;
|
|
|
|
|
|
|
|
/** The full paths to the actions files. */
|
|
|
|
const char *actions_file[MAX_AF_FILES];
|
|
|
|
|
|
|
|
/** The short names of the actions files. */
|
|
|
|
const char *actions_file_short[MAX_AF_FILES];
|
|
|
|
|
|
|
|
/** The administrator's email address */
|
|
|
|
char *admin_address;
|
|
|
|
|
|
|
|
/** A URL with info on this proxy */
|
|
|
|
char *proxy_info_url;
|
|
|
|
|
|
|
|
/** URL to the user manual (on our website or local copy) */
|
|
|
|
char *usermanual;
|
|
|
|
|
|
|
|
/** The file names of the pcre filter files. */
|
|
|
|
const char *re_filterfile[MAX_AF_FILES];
|
|
|
|
|
|
|
|
/** The short names of the pcre filter files. */
|
|
|
|
const char *re_filterfile_short[MAX_AF_FILES];
|
|
|
|
|
|
|
|
/** The hostname to show on CGI pages, or NULL to use the real one. */
|
|
|
|
const char *hostname;
|
|
|
|
|
2012-06-28 03:17:49 +00:00
|
|
|
/** IP addresses to bind to. Defaults to HADDR_DEFAULT == 127.0.0.1. */
|
|
|
|
const char *haddr[MAX_LISTENING_SOCKETS];
|
2012-05-03 18:32:18 +00:00
|
|
|
|
2012-06-28 03:17:49 +00:00
|
|
|
/** Ports to bind to. Defaults to HADDR_PORT == 8118. */
|
|
|
|
int hport[MAX_LISTENING_SOCKETS];
|
2012-05-03 18:32:18 +00:00
|
|
|
|
|
|
|
/** Size limit for IOB */
|
|
|
|
size_t buffer_limit;
|
|
|
|
|
|
|
|
#ifdef FEATURE_TRUST
|
|
|
|
|
|
|
|
/** The file name of the trust file. */
|
|
|
|
const char * trustfile;
|
|
|
|
|
|
|
|
/** FIXME: DOCME: Document this. */
|
|
|
|
struct list trust_info[1];
|
|
|
|
|
|
|
|
/** FIXME: DOCME: Document this. */
|
|
|
|
struct url_spec *trust_list[MAX_TRUSTED_REFERRERS];
|
|
|
|
|
|
|
|
#endif /* def FEATURE_TRUST */
|
|
|
|
|
|
|
|
#ifdef FEATURE_ACL
|
|
|
|
|
|
|
|
/** The access control list (ACL). */
|
|
|
|
struct access_control_list *acl;
|
|
|
|
|
|
|
|
#endif /* def FEATURE_ACL */
|
|
|
|
|
|
|
|
/** Information about parent proxies (forwarding). */
|
|
|
|
struct forward_spec *forward;
|
|
|
|
|
|
|
|
/** Number of retries in case a forwarded connection attempt fails */
|
2012-06-28 03:17:49 +00:00
|
|
|
int forwarded_connect_retries;
|
|
|
|
|
|
|
|
/** Maximum number of client connections. */
|
|
|
|
int max_client_connections;
|
2012-05-03 18:32:18 +00:00
|
|
|
|
|
|
|
/* Timeout when waiting on sockets for data to become available. */
|
|
|
|
int socket_timeout;
|
|
|
|
|
2012-06-28 03:17:49 +00:00
|
|
|
#ifdef FEATURE_CONNECTION_KEEP_ALIVE
|
|
|
|
/* Maximum number of seconds after which an open connection will no longer be reused. */
|
|
|
|
unsigned int keep_alive_timeout;
|
|
|
|
|
|
|
|
/* Assumed server-side keep alive timeout if none is specified. */
|
|
|
|
unsigned int default_server_timeout;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef FEATURE_COMPRESSION
|
|
|
|
int compression_level;
|
|
|
|
#endif
|
|
|
|
|
2012-05-03 18:32:18 +00:00
|
|
|
/** All options from the config file, HTML-formatted. */
|
|
|
|
char *proxy_args;
|
|
|
|
|
|
|
|
/** The configuration file object. */
|
|
|
|
struct file_list *config_file_list;
|
|
|
|
|
|
|
|
/** List of loaders */
|
|
|
|
int (*loaders[NLOADERS])(struct client_state *);
|
|
|
|
|
|
|
|
/** Nonzero if we need to bind() to the new port. */
|
|
|
|
int need_bind;
|
|
|
|
};
|
|
|
|
|
|
|
|
/** Calculates the number of elements in an array, using sizeof. */
|
|
|
|
#define SZ(X) (sizeof(X) / sizeof(*X))
|
|
|
|
|
|
|
|
#ifdef FEATURE_FORCE_LOAD
|
|
|
|
/** The force load URL prefix. */
|
|
|
|
#define FORCE_PREFIX "/PRIVOXY-FORCE"
|
|
|
|
#endif /* def FEATURE_FORCE_LOAD */
|
|
|
|
|
|
|
|
#ifdef FEATURE_NO_GIFS
|
|
|
|
/** The MIME type for images ("image/png" or "image/gif"). */
|
|
|
|
#define BUILTIN_IMAGE_MIMETYPE "image/png"
|
|
|
|
#else
|
|
|
|
#define BUILTIN_IMAGE_MIMETYPE "image/gif"
|
|
|
|
#endif /* def FEATURE_NO_GIFS */
|
|
|
|
|
|
|
|
|
2012-06-28 03:17:49 +00:00
|
|
|
/*
|
2012-05-03 18:32:18 +00:00
|
|
|
* Hardwired URLs
|
|
|
|
*/
|
|
|
|
|
|
|
|
/** URL for the Privoxy home page. */
|
|
|
|
#define HOME_PAGE_URL "http://www.privoxy.org/"
|
|
|
|
|
|
|
|
/** URL for the Privoxy user manual. */
|
|
|
|
#define USER_MANUAL_URL HOME_PAGE_URL VERSION "/user-manual/"
|
|
|
|
|
|
|
|
/** Prefix for actions help links (append to USER_MANUAL_URL). */
|
|
|
|
#define ACTIONS_HELP_PREFIX "actions-file.html#"
|
|
|
|
|
|
|
|
/** Prefix for config option help links (append to USER_MANUAL_URL). */
|
|
|
|
#define CONFIG_HELP_PREFIX "config.html#"
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The "hosts" to intercept and display CGI pages.
|
|
|
|
* First one is a hostname only, second one can specify host and path.
|
|
|
|
*
|
|
|
|
* Notes:
|
|
|
|
* 1) Do not specify the http: prefix
|
|
|
|
* 2) CGI_SITE_2_PATH must not end with /, one will be added automatically.
|
|
|
|
* 3) CGI_SITE_2_PATH must start with /, unless it is the empty string.
|
|
|
|
*/
|
|
|
|
#define CGI_SITE_1_HOST "p.p"
|
|
|
|
#define CGI_SITE_2_HOST "config.privoxy.org"
|
|
|
|
#define CGI_SITE_2_PATH ""
|
|
|
|
|
|
|
|
/**
|
|
|
|
* The prefix for CGI pages. Written out in generated HTML.
|
|
|
|
* INCLUDES the trailing slash.
|
|
|
|
*/
|
|
|
|
#define CGI_PREFIX "http://" CGI_SITE_2_HOST CGI_SITE_2_PATH "/"
|
|
|
|
|
|
|
|
#ifdef __cplusplus
|
|
|
|
} /* extern "C" */
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#endif /* ndef PROJECT_H_INCLUDED */
|
|
|
|
|
|
|
|
/*
|
|
|
|
Local Variables:
|
|
|
|
tab-width: 3
|
|
|
|
end:
|
|
|
|
*/
|