new build instructions
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BUILD
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BUILD
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// 2012/02/13 will be adding information on how to build OBFSPROXY binary
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This document explains how to properly build an Android package of Orbot from source.
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// 2011/04/15 this document is a bit out of date. We will be updating to use
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// the standalone cross-compiler that is offered by the Android NDK soon
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Orbot includes, in the external directory, git repo submodules of:
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- Tor
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- OpenSSL (statically built and patched for Android)
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- LibEvent
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- JTorControl: The Tor Control Library for Java
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This document explains how to properly build an Android package of Orbot from
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source. It covers building on Debian Lenny (5.0.3).
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The Orbot repo also includes the Privoxy source code of a recent stable release.
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Please install the following prerequisites (instructions for each follows):
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ant: http://ant.apache.org/
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Android OS SDK: http://source.android.com/download
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droid-wrapper: http://github.com/tmurakam/droid-wrapper
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libevent source (1.4.12-stable from svn)
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Tor source (most recent git master branch)
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Privoxy source (http://sourceforge.net/projects/ijbswa/)
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Android Native Dev Kit or NDK (for C/C++ code): http://developer.android.com/sdk/ndk/index.html
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Android Software Dev Kit or SDK (for Java code): http://developer.android.com/sdk/index.html
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Install and prepare the Android OS SDK ( http://source.android.com/download )
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on Debian Lenny:
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You will need to run the 'android' command in the SDK to install the necessary Android platform supports (ICS 4.x or android-15)
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sudo apt-get install git-core gnupg sun-java5-jdk flex bison gperf \
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libsdl-dev libesd0-dev libwxgtk2.6-dev build-essential zip \
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curl libncurses5-dev zlib1g-dev valgrind libtool automake \
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ruby subversion
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update-java-alternatives -s java-1.5.0-sun
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To begin building, from the Orbot root directory, you first need to build all external C/native dependencies:
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mkdir ~/bin
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PATH=~/bin:$PATH
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curl https://dl-ssl.google.com/dl/googlesource/git-repo/repo > ~/bin/repo
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chmod a+x ~/bin/repo
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export NDK_BASE={PATH TO YOUR NDK INSTALL}
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make -C external
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mkdir ~/mydroid
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cd ~/mydroid
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repo init -u https://android.googlesource.com/platform/manifest -b android-2.3.7_r1
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repo sync
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# Paste in key from http://source.android.com/download next...
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gpg --import
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cd ~/mydroid
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# This takes a long while...
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make
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Install droid-wrapper:
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cd /tmp
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git clone git://github.com/tmurakam/droid-wrapper.git
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cd droid-wrapper
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sudo make install
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zlib and OpenSSL are included with the Android OS SDK. You'll need to build
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libevent, Privoxy and finally Tor. We'll create an externals directory for this code:
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mkdir -p ~/mydroid/external/{libevent,tor,privoxy}
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We need to set to environment variables for droid-gcc:
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export DROID_ROOT=~/mydroid/
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export DROID_TARGET=generic
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Fetch and build Privoxy:c
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cd ~/mydroid/external/privoxy
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wget http://sourceforge.net/projects/ijbswa/files/Sources/3.0.12%20%28stable%29/privoxy-3.0.12-stable-src.tar.gz/download
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tar xzvf privoxy-3.0.12-stable-src.tar.gz
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cd privoxy-3.0.12-stable
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autoheader
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autoconf
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#need to disable setpgrp check in configure
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export ac_cv_func_setpgrp_void=yes
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CC=droid-gcc LD=droid-ld CPPFLAGS="-I$DROID_ROOT/external/zlib/" ./configure --host=arm-none-linux-gnueabi
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#don't mind the "unrecognized option '-pthread'" error message that you'll see when you run make
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make
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Fetch and build libevent:
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cd ~/mydroid/external/libevent
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svn co https://levent.svn.sourceforge.net/svnroot/levent/tags/release-1.4.13-stable/libevent/ .
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export LIBEVENTDIR=`cd $DROID_ROOT/external/libevent && pwd`
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./autogen.sh
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# Put the contents of http://pastebin.ca/1577207 in /tmp/libevent-patch
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# path no longer needed: patch < /tmp/libevent-patch
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CC=droid-gcc LD=droid-ld ./configure --host=arm-none-linux-gnueabi
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make
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Copy over the libevent library:
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cp .libs/libevent.a $DROID_ROOT/out/target/product/generic/obj/lib
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Fetch and build Tor:
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export OPENSSLDIR=`cd $DROID_ROOT/external/openssl/include/ && pwd`
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export ZLIBDIR=`cd $DROID_ROOT/external/zlib && pwd`
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cd $DROID_ROOT/external/tor
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git clone git://git.torproject.org/git/tor.git
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cd tor/
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./autogen.sh
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CC=droid-gcc LD=droid-ld ./configure --host=arm-none-linux-gnueabi \
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--with-libevent-dir=$LIBEVENTDIR --with-openssl-dir=$OPENSSLDIR \
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--with-zlib-dir=$ZLIBDIR --disable-asciidoc
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make
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At this point, you'll have a Tor binary that can be run on an Android handset.
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At this point, you'll have Tor and Privoxy binaries that can be run on an Android handset.
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You can verify the ARM binary was properly built using the following command:
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file src/or/tor
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file res/raw/tor
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file res/raw/privoxy
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You should see something like:
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src/or/tor: ELF 32-bit LSB executable, ARM, version 1 (SYSV), dynamically linked (uses shared libs), not stripped
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@ -111,30 +33,14 @@ src/or/tor: ELF 32-bit LSB executable, ARM, version 1 (SYSV), dynamically linked
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This isn't enough though and we'll now sew up the binary into a small package
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that will handle basic Tor controlling features.
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We need to get the TorControl library for Java:
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(see also https://svn.torproject.org/svn/torctl/trunk/doc/howto.txt)
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android update project --name Orbot --target android-15 --path .
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git clone git://git.torproject.org/git/jtorctl
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cd jtorctl
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mkdir bin
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javac net/freehaven/tor/control/TorControlConnection.java -d bin
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cd bin
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jar cvf jtorctrl.jar *
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cp jtorctrl.jar {Orbot Home}/libs
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Finally, we'll make a proper Android package with ant and the Android App SDK:
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export APP_SDK=~/Documents/projects/android/android-sdk-linux_x86-1.5_r3/tools
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cd ../Orbot/
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cp $DROID_ROOT/external/privoxy/privoxy-3.0.12-stable/privoxy assets/privoxy
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Now you need to split and copy the tor binary into res/raw. We split it into < 1M chunks
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because some Android devices don't like resources larger than 1M.
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split --bytes=1m $DROID_ROOT/external/tor/tor/src/or/tor res/raw/tor
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#Now you need to split and copy the tor binary into res/raw. We split it into < 1M chunks
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#because some Android devices don't like resources larger than 1M.
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#split --bytes=1m $DROID_ROOT/external/tor/tor/src/or/tor res/raw/tor
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Now build the Android app
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$APP_SDK/android update project --name Orbot --target 3 --path .
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ant release
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This will produce an unsigned Tor package in ./bin/Orbot-unsigned.apk!
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