ip反查

#!/usr/bin/python2.7
# -*- coding:utf-8 -*-
import urllib,urllib2
import re
import subprocess
import sys



output=''
def html(html):
    #print str
    response=urllib2.urlopen(html)
    return str(response.readlines())

def getpage(html):
    pattern=re.compile("\.\.\.\s(\d+)",re.S)
    #print html
    p=pattern.findall(html)
    #print '页数为：'+p[0]
    if len(p)==0:
        print '无查询结果'
        exit()
    else:
        return int(p[0])
def getAllDomain(html):
    #print html
    pattern1=re.compile("t<a\shref=\"http://(.*?)/\"\srel",re.S)
    domain=pattern1.findall(html)
    result=[]
    i=0
    #print domain
    for pp in domain:
        result.append(pp)
        i+=1
    return result

def nslookup(domain):
    ns=subprocess.Popen('nslookup '+domain,shell=True,stdout=subprocess.PIPE)
    ns_result=ns.stdout.read()
    #print ns_result
    #如果nslookup输出不一样需要修改正则,正则不会写，很多疏漏，简单写下能实现就行
    re_domain=re.compile("Name:\t([\s\S\w\W]*?)\nAddress:([\s\S\w\W]*?)\n", re.S)
    return re_domain.findall(ns_result)
    
    
    
def nslookupThread(allDomain):
        for d in allDomain:
            r=nslookup(d)
            #跳过未查询到的
            if len(r)==0:
                continue
            for i in range(len(r)):
                x=r[i][0].strip()
                y=r[i][1].strip()
            #print '%s:%s' % (x,y)
            
            #提取解析到此ip的域名
                if cmp(y,ip)==0:
                    print x