MAC os x 下 python-nmap 安装问题总结

1、先说遇到的问题

pip install python-nmap    

安装python-nmap 之后，遇到如下问题：

>>>import namp
>>> nm = nmap.PortScanner()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Library/Python/2.7/site-packages/nmap/nmap.py", line 131, in __init__
    os.getenv('PATH')
nmap.nmap.PortScannerError: 'nmap program was not found in path. PATH is : /Library/Frameworks/Python.framework/Versions/3.5/bin:/usr/local/lib/python2.7/site-packages/python_nmap-0.6.1-py2.7.egg:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/mysql/bin'

查看PortScanner类源码发现，__init__(self, nmap_search_path=('nmap', '/usr/bin/nmap', '/usr/local/bin/nmap', '/sw/bin/nmap', '/opt/local/bin/nmap')) 初始化设置了默认查找路径, 还有段代码是出现以上错误的源程序，如下：

        #'Nmap version 5.0 ( http://nmap.org )'
        # This is for Mac OSX. When idle3 is launched from the finder, PATH is not set so nmap was not found
        for nmap_path in nmap_search_path:
            try:
                if sys.platform.startswith('freebsd') \
                   or sys.platform.startswith('linux') \
                   or sys.platform.startswith('darwin'):
                    p = subprocess.Popen([nmap_path, '-V'],
                                         bufsize=10000,
                                         stdout=subprocess.PIPE,
                                         close_fds=True)
                else:
                    p = subprocess.Popen([nmap_path, '-V'],
                                         bufsize=10000,
                                         stdout=subprocess.PIPE)

            except OSError:
                pass
            else:
                self._nmap_path = nmap_path  # save path
                break
        else:
            raise PortScannerError(
                'nmap program was not found in path. PATH is : {0}'.format(
                    os.getenv('PATH')
                )
            )  

这段代码简要解释下功能： 就是使用初始路径在命令行中执行： 路径 －V ,  上面的代码就是执行:nmap -V  

在命令行中执行： namp -V , 如果出现 nmap: command not found，   就是你没有安装nmap , 查了些资料说python-nmap 依赖nmap , 需要先安装

nmap 才行。

PS: 路径上的nmap 不是文件夹，也不是namp.py文件，而是二进制可执行文件， 如果相应路径找不到nmap可执行文件，说明namp没安装或路径不对

2、 brew install nmap 

这个我试很多次才成功， 老是出现找不到资源的错误，

curl: (28) Operation timed out after 0 milliseconds with 0 out of 0 bytes received

Error: Failed to download resource "nmap"

可能是因为网络不行。

到此nmap安装已经安装好了。

但是执行： nmap 命令还是出现：

-bash: nmap: command not found

需要按照命令提示执行一下命令：

 brew link --overwrite nmap

再执行namp -V ,  成功！

安装nmap成功后命令行中有个警告：

==> Caveats

Python modules have been installed and Homebrew's site-packages is not

in your Python sys.path, so you will not be able to import the modules

this formula installed. If you plan to develop with these modules,

please run:

  mkdir -p /Users/jason/Library/Python/2.7/lib/python/site-packages

  echo 'import site; site.addsitedir("/usr/local/lib/python2.7/site-packages")' >> /Users/jason/Library/Python/2.7/lib/python/site-packages/homebrew.pth

这个python modeles就是指python-nmap , 按照命令执行下：(我的python-nmap 是先于nmap安装好的，所以有这个提示。)

mkdir -p /Users/jason/Library/Python/2.7/lib/python/site-packages

echo 'import site; site.addsitedir("/usr/local/lib/python2.7/site-packages")' >> /Users/jason/Library/Python/2.7/lib/python/site-packages/homebrew.pth

至此，nmap.PortScanner() 问题就解决了。

PS: http://nmap.org/ , 可以直接下载nmap 安装包