#!/usr/bin/python3
# -*- coding: utf-8 -*-

__license__="""

Parsero is a free script which read the Robots.txt file of a web server and look at the Disallow entries. Then it 
visits these entries and prints the status code in order to show you which of them are available and which not.

Author:
	Javier Nieto | javier.nieto@behindthefirewalls.com
	Twitter: @behindfirewalls
	Web: www.behindthefirewalls.com

	Parsero project site: https://github.com/behindthefirewalls/Parsero

	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 2
	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, write to the Free Software
	Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

	The authors disclaims all responsibility in the use of this tool.

	"""

class bcolors:
    OKGREEN = '\033[92m'
    FAIL = '\033[91m'
    ENDC = '\033[0m'
    YELLOW = '\033[33m'

    def disable(self):
            self.OKGREEN = ''
            self.FAIL = ''
            self.ENDC = ''

import sys

if sys.version_info<(3,0,0):
	print("\n" + bcolors.FAIL + "You need Python3 or later to run this script." + bcolors.ENDC + "\n")
	exit(1)

import urllib.request
import argparse
import os
import time
import timeit

try:
	import urllib3

except ImportError:

	print("\n" + bcolors.FAIL + 'You need to install urllib3. "sudo pip-3.3 install urllib3"' + bcolors.ENDC + "\n")
	exit(1)

def logo():

	hello="""
	  ____                               
	 |  _ \ __ _ _ __ ___  ___ _ __ ___  
	 | |_) / _` | '__/ __|/ _ \ '__/ _ \ 
	 |  __/ (_| | |  \__ \  __/ | | (_) |
	 |_|   \__,_|_|  |___/\___|_|  \___/ 
"""
        
	print(bcolors.YELLOW + hello + bcolors.ENDC)

	now = time.strftime("%c")

def conn_check(url, only200):

	global pathlist
	pathlist = []
	try:
		for line in urllib.request.urlopen("http://"+url+"/robots.txt"):
			lineStr = str( line, encoding='utf8' )
			path = lineStr.split(': /')
			if "Disallow" == path[0]:
				pathlist.append(path[1].replace("\n","").replace("\r",""))
				pathlist = list(set(pathlist))
			try:
				inx = pathlist.index("/")
				del pathlist[inx]
			except:
				pass
	except urllib.error.HTTPError:
		print("\n" + bcolors.FAIL + "No robots.txt file has been found." + bcolors.ENDC + "\n")
		exit(1)
	except urllib.error.URLError:
		print("\n" + bcolors.FAIL + "Please, type a valid URL. This URL can't be resolved." + bcolors.ENDC)
		print("\n" + bcolors.FAIL + "e.g: python3 parsero.py -u www.behindthefirewalls.com -o -sb" + bcolors.ENDC + "\n")
		exit(1)	

	http = urllib3.PoolManager()
	count = 0
	count_ok = 0			
	
	for p in pathlist:		
		disurl = "http://"+url+'/'+p
		r1 = http.request('GET', disurl, redirect = False, retries = 5)
		if r1.status == 200:
			print (bcolors.OKGREEN + disurl + ' ' + str(r1.status) + ' ' + str(r1.reason) + bcolors.ENDC)
			count_ok = count_ok+1
		elif only200 == False:
 			print (bcolors.FAIL + disurl + ' ' + str(r1.status) + ' ' + str(r1.reason) + bcolors.ENDC)
		count = count+1

	count_int = int(count)
	count_ok_int = int(count_ok)
	if count_ok_int != 0 and only200 == True :
		print('\n[+] %i links have been analyzed and %i of them are available!!!'%(count_int,count_ok_int))
	elif count_ok_int != 0 :
		print('\n[+] %i links have been analyzed and %i of them are available!!!'%(count_int,count_ok_int))
	elif count_ok_int == 0 and only200 == True :
		print('\n' + bcolors.FAIL + '[+] %i links have been analyzed but any them are available...'%count_int + bcolors.ENDC)
	else:
		print('\n' + bcolors.FAIL + '[+] %i links have been analyzed but any them are available...'%count_int + bcolors.ENDC)

def search_bing(url, searchbing, only200):
	
	try:
		print("\nSearching the Disallows entries in Bing...\n")

		from bs4 import BeautifulSoup
		
		count = 0
		for p in pathlist:
			disurl = "http://"+url+'/'+p		
			opener = urllib.request.build_opener()
			opener.addheaders = [('User-agent', 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:26.0) Gecko/20100101 Firefox/26.0')]
		
			url2 = "http://www.bing.com/search?q=site:"+disurl
			print (url2)
			
			page = opener.open(url2)
			soup = BeautifulSoup(page)
	
			http = urllib3.PoolManager()
			for cite in soup.findAll('cite'):
				try:
					if url in cite.text:
						count = count +1
						r2 = http.request('GET',  cite.text, redirect = False, retries = 5)
						if r2.status == 200:
							print (bcolors.OKGREEN + ' - ' + cite.text + ' ' + str(r2.status) + ' ' + str(r2.reason) + bcolors.ENDC)
						elif only200 == False:
 							print (bcolors.FAIL + ' - ' + cite.text + ' ' + str(r2.status) + ' ' + str(r2.reason) + bcolors.ENDC)
				except UnicodeEncodeError:
					pass

		if count == 0:
			print('\n' + bcolors.FAIL + '[+] No Dissallows have been indexed in Bing' + bcolors.ENDC)

	except ImportError:
		print(bcolors.FAIL + 'You need to install Beautifulsoup. "sudo pip-3.3 install beautifulsoup4"' + bcolors.ENDC)

def date(url):
	print("Starting Parsero v0.75 (https://github.com/behindthefirewalls/Parsero) at " + time.strftime("%x") + " " + time.strftime("%X"))
	print("Parsero scan report for " + url)

def main():
	parse = argparse.ArgumentParser()
	parse.add_argument('-u', action='store', dest='url', help='Type the URL which will be analyzed')
	parse.add_argument('-o', action='store_true', dest='only200', help='Show only the "HTTP 200" status code')
	parse.add_argument('-sb', action='store_true', dest='searchbing', help='Search in Bing indexed Disallows')

	logo()

	args = parse.parse_args()
	if args.url == None:
		parse.print_help()
		print("\n")
		exit(1)

	url = str(args.url)
	only200 = args.only200
	searchbing = args.searchbing
	date(url)
	conn_check(url, only200)
	if searchbing == True:
		search_bing(url, searchbing, only200)

if __name__=="__main__":
	start_time = time.time()
	main()
	print("\nFinished in", time.time() - start_time, "seconds\n")
