#!/usr/bin/env python
#-*-coding: utf-8 -*-

"""
Licence :
---------
Fernandez Lucas aka kasey <contact kasey.fr>
 
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.

----

Source :
 * http://www.bigtrapeze.com/md5/source.php
"""

import urllib2, cookielib, urllib, hashlib
import re, sys
from random import choice

class GoogleHash:
	hash   = ""
	type   = ""
	hash_t = {'md5':32,'sha1':40}
	h = re
	s = re

	def __init__(self):
	    self.h = re.compile(r'<.*?>')
	    self.s = re.compile(r'\s+')
	
	def remove_html_tags(self,data):
	    return self.s.sub(' ',self.h.sub(' ',data))

	def find_hash(self,hash,type="md5"):
		self.hash = hash
		self.type = type
		
		# Sanity checks
		if not type in self.hash_t:
			return (-1, "type de hash inconnu")
		
		if len(hash) != self.hash_t[self.type]:
			return (-2, "le hash ne semble pas correspondre au type demandé")

		# Web grabber init
		cookiejar = cookielib.CookieJar()
		urlOpener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookiejar))
		useragent = {'User-Agent':'Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9a8) Gecko/2007100619 GranParadiso/3.0a8'}

		# do the google request
		request = urllib2.Request('http://www.google.com/search?q=%s' % self.hash, None, useragent)

		# grab and clean the result
		url  = urlOpener.open(request)
		data = self.remove_html_tags(url.read())

		# check hashtype for each word find in the google answer
		for word in re.findall(r'\w+',data):
			if len(word) <= self.hash_t[self.type]:
				if hashlib.md5(word).hexdigest() == self.hash:
					return (0, self.hash, word)
		
		# if any word match the password is not found
		return (-3, "hash %s not found" % self.hash)

if __name__ == "__main__":
	h = GoogleHash()
	if len(sys.argv) != 2 or len(sys.argv[1]) != 32:
	        print "Usage : gAPI.py <md5_hash>"
	        quit()

	print h.find_hash(sys.argv[1])