[Python] pypcap for python 2.7@win32.xp

pypcap 是pcap在python上的一个封装，但官方网站上的版本只支持python2.5,家里公司机器上的版本都是2.7。在网上搜了一下，没发现特别完整的step by step guide,用mingw自己编了一个，整理记录一下：

I. Package Download

WinPcap installer:         http://www.winpcap.org/archive/

WinPcap WpdPack:       http://www.winpcap.org/archive/

Mingw:                        http://www.mingw.org/

pycap:                         http://code.google.com/p/pypcap/ 

sendpkt:                      http://code.google.com/p/sendpkt/ 

dpkt:                           http://code.google.com/p/dpkt/ 

pexports:                     http://www.emmestech.com/moron_guides/moron1.html

II. Compile

1> Install Mingw

     <> : install

     <> : under ..\bin, change mingw32-make.exe to make.exe
     <> : add into env variable

     <> : check with g++

2> Install winpcap

     <> : install

3> Generat libpython27.a (for mingw usage)

     <> : goto <Python Home>\libs
     <> : run pexports %dll_name% >%def_file%
            Sample : pexports.exe c:\WINDOWS\system32\python27.dll >python27.def
     <> : run dlltool -d %def_file% -l %library% (please do not forget that gcc linker expects library files to have "lib" prefix, e.g. libpython20.a for python20.dll)
            Sample : dlltool -d python27.def -l libpython27.a

4> Compile pypcap

     <> : unzip both pypcap and wdpack into same folder (pypcap 和 wdpack为同级目录 )

     <> : create setup.cfg as below

1. [build]  
2. compiler=mingw32  

     <> : python setup.py config

     <> : python setup.py build

     <> : python setup.py install

5> install senddpkt with similiar process
6> verification
     under cmdlie, type python:

1. >>> import pcap
2. >>>

III. FAQ

1> ERROR : "couldn't find pcap build or installation directory"

A:    目录结构：

base\

          pypcap

         WpdPack

2>  ERROR : Undefined reference to `_imp___Py_NoneStruct

A:     缺少python2x.a文件，check II. 3