100 lines
3.2 KiB
Python
100 lines
3.2 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
import os, re, fnmatch, threading, urllib2
|
|
from contextlib import contextmanager, closing
|
|
from functions import log, debug, tempdir
|
|
|
|
LOCKS = {}
|
|
PAC_URL = "http://antizapret.prostovpn.org/proxy.pac"
|
|
CACHE_DIR = tempdir()
|
|
USER_AGENT = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/34.0.1847.116 Safari/537.36"
|
|
|
|
if not os.path.exists(CACHE_DIR):
|
|
os.makedirs(CACHE_DIR)
|
|
|
|
CACHE = 24 * 3600 # 24 hour caching
|
|
|
|
@contextmanager
|
|
def shelf(filename, ttl=0):
|
|
import shelve
|
|
filename = os.path.join(CACHE_DIR, filename)
|
|
with LOCKS.get(filename, threading.RLock()):
|
|
with closing(shelve.open(filename, writeback=True)) as d:
|
|
import time
|
|
if not d:
|
|
d.update({
|
|
"created_at": time.time(),
|
|
"data": {},
|
|
})
|
|
elif ttl > 0 and (time.time() - d["created_at"]) > ttl:
|
|
d["data"] = {}
|
|
yield d["data"]
|
|
|
|
_config = {}
|
|
|
|
def config():
|
|
global _config
|
|
if not _config:
|
|
with shelf("antizapret.pac_config", ttl=CACHE) as pac_config:
|
|
if not pac_config:
|
|
log("[antizapret]: Fetching Antizapret PAC file on %s" %PAC_URL)
|
|
try:
|
|
pac_data = urllib2.urlopen(PAC_URL).read()
|
|
except:
|
|
pac_data = ""
|
|
|
|
r = re.search(r"\"PROXY (.*); DIRECT", pac_data)
|
|
if r:
|
|
pac_config["server"] = r.group(1)
|
|
pac_config["domains"] = map(lambda x: x.replace(r"\Z(?ms)", "").replace("\\", ""), map(fnmatch.translate, re.findall(r"\"(.*?)\",", pac_data)))
|
|
else:
|
|
pac_config["server"] = None
|
|
pac_config["domains"] = []
|
|
_config = pac_config
|
|
return _config
|
|
|
|
class AntizapretProxyHandler(urllib2.ProxyHandler, object):
|
|
def __init__(self):
|
|
self.config = config()
|
|
urllib2.ProxyHandler.__init__(self, {
|
|
"http" : "<empty>",
|
|
"https": "<empty>",
|
|
"ftp" : "<empty>",
|
|
})
|
|
def proxy_open(self, req, proxy, type):
|
|
import socket
|
|
|
|
if socket.gethostbyname(req.get_host().split(":")[0]) in self.config["domains"]:
|
|
debug("[antizapret]: Pass request through proxy " + self.config["server"])
|
|
return urllib2.ProxyHandler.proxy_open(self, req, self.config["server"], type)
|
|
|
|
return None
|
|
|
|
def url_get(url, params={}, headers={}, post = None):
|
|
|
|
if params:
|
|
import urllib
|
|
url = "%s?%s" % (url, urllib.urlencode(params))
|
|
|
|
if post:
|
|
import urllib
|
|
post = urllib.urlencode(post)
|
|
|
|
req = urllib2.Request(url, post)
|
|
req.add_header("User-Agent", USER_AGENT)
|
|
|
|
for k, v in headers.items():
|
|
req.add_header(k, v)
|
|
|
|
try:
|
|
with closing(urllib2.urlopen(req)) as response:
|
|
data = response.read()
|
|
if response.headers.get("Content-Encoding", "") == "gzip":
|
|
import zlib
|
|
return zlib.decompressobj(16 + zlib.MAX_WBITS).decompress(data)
|
|
return data
|
|
except urllib2.HTTPError as e:
|
|
log("[antizapret]: HTTP Error(%s): %s" % (e.errno, e.strerror))
|
|
return None
|
|
|