Tor源码分析一 -- 使用工具集

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原创最新推荐文章于 2026-03-14 01:19:04 发布 6.4k 阅读 AI 写同款· GEO 优化 ›

Tor源码 -- core分析 tor coreor connectioncircuitstream or connection or connection负责op与or或者or与or的连接（两个主机之间的连接）。包括TLS连接，handshake等等。到目前为止, tor有3种握手方式：certificate up-front, renegotiation, in-protocol. or_connection_st.h声明了or connection数据类型，connection_or.c文件有操作函数。 circuit stre 阅读详情

　　Tor系统是用于匿名通信的一个系统，源代码的维护到今天已经快10年。笔者从今年3月份开始陆陆续续研究Tor系统的源码，由于源码量大，也有很多需要总结的地方，所以特地在这里开辟个Tor源码分析的系列文章，供自己总结，也供大家共同探讨。

1. 源码查看工具 -- SourceInsight

　　本来Tor源码在Linux下分析和调试都可以比在Windows下更专业些，但是因为笔者本身大部分时间需要在Windows下工作，所以选择了Windows下的源码分析软件。SourceInsight是个非常好的源码分析软件，用于查看各种开源代码工程都非常方便。这里选用SourceInsight作为Tor源码的基本浏览和修改工具。

2. 文档生成工具 -- Doxygen

　　关于Doxygen的基本介绍大家可以在网上找到很多。简单的说，Doxygen就是将源码内的信息进行总结，生成包括函数调用关系，函数介绍等信息。这对于宏观查看代码非常重要。Tor源码内很多函数都连续嵌套非常多层，靠人为记住是非常困难的。利用Doxygen的函数调用图，能帮助我们更好的查看函数之间的调用关系。这里不介绍Doxygen如何使用，百度上有许多。注：使用Doxygen时定要打开函数调用图的生成功能。

3. 编译工具 -- MinGW MSYS msyDTK

　　为了在Windows上完成对Tor的编译，需要使用到下面一些列套件。好在这些部分在Tor的FAQ中已经很详细地说明如何使用，这里就仅仅将Tor中关于如何在WIndows下编译Tor源码的部分复制于此，请大家自行查看。

##
## Instructions for building Tor with MinGW (http://www.mingw.org/)
##

Stage One:  Download and Install MinGW.
---------------------------------------

Download mingw:
http://prdownloads.sf.net/mingw/MinGW-5.1.6.exe?download

Download msys:
http://prdownloads.sf.net/ming/MSYS-1.0.11.exe?download

Download msysDTK:
http://sourceforge.net/projects/mingw/files/MSYS%20Supplementary%20Tools/msysDTK-1.0.1/msysDTK-1.0.1.exe/download

Install MinGW, msysDTK, and MSYS in that order.  

Make sure your PATH includes C:\MinGW\bin.  You can verify this by right
clicking on "My Computer", choose "Properties", choose "Advanced",
choose "Environment Variables", select PATH.

Start MSYS(rxvt).

Create a directory called "tor-mingw".

Stage Two:  Download, extract, compile openssl
----------------------------------------------

Download openssl:
http://www.openssl.org/source/openssl-0.9.8l.tar.gz

Extract openssl:
Copy the openssl tarball into the "tor-mingw" directory.
Type "cd tor-mingw/"
Type "tar zxf openssl-0.9.8l.tar.gz"
(Note:  There are many symlink errors because Windows doesn't support
symlinks.  You can ignore these errors.)

Make openssl libraries:
Type "cd tor-mingw/openssl-0.9.8l/"
Type "./Configure -no-idea -no-rc5 -no-mdc2 mingw"
Edit Makefile and remove the "test:" and "tests:" sections.
Type "rm -rf ./test"
Type "cd crypto/"
Type "find ./ -name "*.h" -exec cp {} ../include/openssl/ \;"
Type "cd ../ssl/"
Type "find ./ -name "*.h" -exec cp {} ../include/openssl/ \;"
Type "cd .."
Type "cp *.h include/openssl/"
Type "find ./fips -type f -name "*.h" -exec cp {} include/openssl/ \;"
# The next steps can take up to 30 minutes to complete.
Type "make"
Type "make install"


Stage Three:  Download, extract, compile zlib
---------------------------------------------

Download zlib source:
http://www.zlib.net/zlib-1.2.3.tar.gz

Extract zlib:
Copy the zlib tarball into the "tor-mingw" directory
Type "cd tor-mingw/"
Type "tar zxf zlib-1.2.3.tar.gz"

CHOICE:

Make zlib.a:
Type "cd tor-mingw/zlib-1.2.3/"
Type "./configure"
Type "make"
Type "make install"

Done.


Stage Four: Download, extract, and compile libevent
------------------------------------------------------

Download the latest libevent release:
http://www.monkey.org/~provos/libevent/

Copy the libevent tarball into the "tor-mingw" directory.
Type "cd tor-mingw"

Extract libevent.

Type "./configure --enable-static --disable-shared"
Type "make"
Type "make install"

Stage Five:  Build Tor
----------------------

Download the current Tor alpha release source code from https://torproject.org/download.html.
Copy the Tor tarball into the "tor-mingw" directory.
Extract Tor:
Type "tar zxf latest-tor-alpha.tar.gz"

cd tor-<version>
Type "./configure"
Type "make"

You now have a tor.exe in src/or/.  This is Tor.
You now have a tor-resolve.exe in src/tools/.

Stage Six:  Build the installer
-------------------------------

Install the latest NSIS:
http://nsis.sourceforge.net/Download

Run the package script in contrib:
From the Tor build directory above, run:
"./contrib/package_nsis-mingw.sh"

The resulting Tor installer executable is in ./win_tmp/.

　　上述所有的工具及源码都下载，安装完毕之后，就可以进入Tor源码的细节分析阶段。不过，在此之前，如果可能，还需要通读Tor源码的设计文档：

　　https://www.torproject.org/docs/documentation.html.en

　　上述网址需要翻墙才可以阅读，所以，或许还需要使用VPN或者GoAgent的方式事先翻墙。

　　重点必读的设计文档包括：<Tor: the second-generation onion router>, <Tor main specification>

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