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torproxy.py
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torproxy.py
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# Copyright (C) 2015 by Arnaud Durand <arnaud.durand@protonmail.com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
import os
import re
import socket
import time
import socks
import stem.connection
import stem.process
import stem.socket
from scrapy import log
from scrapy.core.downloader.handlers.http11 import (HTTP11DownloadHandler,
ScrapyAgent)
from scrapy.core.downloader.webclient import _parse
from scrapy.utils.request import request_fingerprint
from scrapy.xlib.tx import TCP4ClientEndpoint
from stem import Signal
from stem.control import Controller
from stem.util import term
from twisted.internet import reactor
from txsocksx.http import SOCKS5Agent
class Socks5DownloadHandler(HTTP11DownloadHandler):
"""
https://gist.github.com/cydu/8a4b9855c5e21423c9c5
author: cydu<root@cydu.net>
"""
def download_request(self, request, spider):
"""Return a deferred for the HTTP download"""
agent = ScrapySocks5Agent(contextFactory=self._contextFactory, pool=self._pool)
return agent.download_request(request)
class ScrapySocks5Agent(ScrapyAgent):
"""
https://gist.github.com/cydu/8a4b9855c5e21423c9c5
author: cydu<root@cydu.net>
"""
def _get_agent(self, request, timeout):
bindAddress = request.meta.get('bindaddress') or self._bindAddress
proxy = request.meta.get('proxy')
if proxy:
_, _, proxyHost, proxyPort, proxyParams = _parse(proxy)
_, _, host, port, proxyParams = _parse(request.url)
proxyEndpoint = TCP4ClientEndpoint(reactor, proxyHost, proxyPort,
timeout=timeout, bindAddress=bindAddress)
agent = SOCKS5Agent(reactor, proxyEndpoint=proxyEndpoint)
return agent
return self._Agent(reactor, contextFactory=self._contextFactory,
connectTimeout=timeout, bindAddress=bindAddress, pool=self._pool)
class TorProcess:
def __init__(self, socks_port=9000, control_port=7000, index=0):
print(" - Starting TOR Process...")
self.socks_port = socks_port
self.control_port = control_port
stem.process.launch_tor_with_config(
config={
'SocksPort': str(self.socks_port),
'ControlPort': str(self.control_port+index),
'DataDirectory':'data/tor'+str(index),
'PidFile':'tor'+str(index)+'.pid',
},
init_msg_handler = self.msg_handler,
take_ownership = True,
)
self.nym_updated_on = time.time()
def msg_handler(self, line):
if("Bootstrapped " in line):
print(line)
def newnym(self):
print("[+] Changing IP Address... [%i]" % self.socks_port)
start = time.time()
controller = Controller.from_port(port = self.control_port)
controller.authenticate()
controller.signal(Signal.NEWNYM)
time.sleep(controller.get_newnym_wait())
end = time.time()
print (end - start)
self.nym_updated_on = time.time()
def __unicode__(self):
return unicode(proxy_address)
@property
def proxy_address(self):
return '127.0.0.1:%i' % self.socks_port
class TorPool(object):
def __init__(self, size=1):
self.tor_processes = []
self.base_socks_port = 9000
self.base_control_port = 7000
for i in range(size):
self.tor_processes.append(TorProcess(
socks_port=self.base_socks_port+i,
control_port=self.base_control_port+i,
index=i))
def __getitem__(self, key):
return self.tor_processes[key]
def __len__(self):
return len(self.tor_processes)
class TorProxy(object):
def __init__(self, settings):
pool_size = settings.get('TOR_POOL_SIZE')
self.tor_pool = TorPool(size = pool_size)
@classmethod
def from_crawler(cls, crawler):
return cls(crawler.settings)
def process_request(self, request, spider):
# Don't overwrite with a random one (server-side state for IP)
if 'proxy' in request.meta:
return
tor_proc = self._request_tor_instance(request)
if 'newnym' in request.meta:
if request.meta['newnym'] > tor_proc.nym_updated_on:
tor_proc.newnym()
#print('prox_addr: %s' % tor_proc.proxy_address)
request.meta['proxy'] = 'socks5://%s' % tor_proc.proxy_address
# def process_exception(self, request, exception, spider):
# tor_proc = self._request_tor_instance(request)
# proxy = request.meta['proxy']
# log.msg('Failed proxy <%s>, %d proxies available' % (
# tor_proc, len(self.tor_pool)))
# try:
# pass
# except ValueError:
# pass
def _request_tor_instance(self, request):
fingerprint = request_fingerprint(request)
proxy_idx = int(fingerprint, 16) % len(self.tor_pool)
return self.tor_pool[proxy_idx]