http_banner获取v0.2

#-*-coding=utf-8-*-
# __author__  = 'sanr'
# __email__   = '[email protected]'
# __url__     = 'http://0x007.blog.51cto.com/'
# __version__ = '0.2'
import requests
import re
from threading import Thread,Lock
import time
import sys
import chardet
import netaddr
import struct
import socket

lock = Lock()

def ip2int(addr):
        return struct.unpack("!I", socket.inet_aton(addr))[0]
def int2ip(addr):
        return socket.inet_ntoa(struct.pack("!I", addr))
def int_dec(pagehtml):

        charset = None
        if pagehtml != '':
                # print 'use charset dect'
                enc = chardet.detect(pagehtml)
                # print 'enc= ', enc
                if enc['encoding'] and enc['confidence'] > 0.9:
                        charset = enc['encoding']

                if charset == None:
                        charset_re = re.compile("((^|;)\s*charset\s*=)([^\"']*)", re.M)
                        charset=charset_re.search(pagehtml[:1000]) 
                        charset=charset and charset.group(3) or None

                # test charset
                try:
                        if charset:
                                unicode('test',charset,errors='replace')
                except Exception,e:
                        print 'Exception',e
                        charset = None
        # print 'charset=', charset
        return charset


def http_banner(url):
        ip=url
        try:
                url=requests.get(url,timeout=2)        

                body = url.content
                
                charset = None
                if body != '':
                        charset = int_dec(body)

                if charset == None or charset == 'ascii':
                        charset = 'ISO-8859-1'

                if charset and charset != 'ascii' and charset != 'unicode':
                        try:
                                body = unicode(body,charset,errors='replace')
                        except Exception, e:
                                body = ''
                Struts=url.status_code
                Server=url.headers['server'][0:13]
                if Struts==200 or Struts==403 or Struts==401:
                        title=re.findall(r"