套接字函数获取错误

Question

我试图从与参数值相连的子域列表中执行socket.getHostByName，但得到一个错误。我不确定循环是否正常工作，第一次尝试只是不是一个有效的子域+域。或者它根本不起作用？

误差

Traceback (most recent call last):
  File "./attack2.py", line 40, in <module>
    print subcheck(returned_list, arguments['--domain'])
  File "./attack2.py", line 31, in subcheck
    socket.gethostbyname(sub + domain)
socket.gaierror: [Errno -2] Name or service not known

代码

#!/usr/bin/python

"""
Description:

Basic Domain bruteforcer

Usage:
  attack2.py (-f <file>) (-d <domain>) [-t 10] [-v]
  attack2.py -h | --help

Arguments:
  -f --file File to read potential Sub-domains from. (Required)
  -d --domain Domain to bruteforce. (Required)
Options:
  -h --help     Show this screen.
  -p --proxy    Proxy address and port. [default: http://127.0.0.1:8080] (Optional)
  -t --thread   Thread count. (Optional)
  -v --verbose  Turn debug on. (Optional)
"""
import socket
from docopt import docopt


def fread(dwords):
        flist = open(dwords).readlines()
        return [s.replace('\n', '.') for s in flist]

def subcheck(subdomain, domain):
        for sub in subdomain:
                socket.gethostbyname(sub + domain)
        return output


if __name__ == "__main__":
        arguments = docopt(__doc__, version='0.1a')
        print arguments
        print fread(arguments['--file'])
        returned_list = fread(arguments['--file'])
        print subcheck(returned_list, arguments['--domain'])

新def子校验码

def subcheck(subdomain, domain):
    for sub in subdomain:
            try:
                    #print "%s %d" % (sub+domain,len(sub+domain))
                    print socket.gethostbyname(sub + domain)

            except:
                    print "Some error"

新产出

173.194.34.150
173.194.34.137
Some error
Some error
None

Answer 1

没有返回，因为subcheck函数中没有返回任何内容。因此，当您像这样调用它时：

print subcheck(returned_list, arguments['--domain']) 

它将被迫返回，并且不打印任何内容。删除它前面的打印，你不会看到任何。