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web.py
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web.py
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#!/usr/bin/python
# -*- coding: utf-8 -*-
from binascii import hexlify, unhexlify
from Crypto.Cipher import AES
from datetime import datetime, timedelta
from functools import partial
import re
from urlparse import urlparse
from werkzeug.exceptions import HTTPException, Forbidden, InternalServerError
from werkzeug.routing import EndpointPrefix, Map
from werkzeug.utils import redirect
from werkzeug.wrappers import Request
from werkzeug.wsgi import ClosingIterator
from config import config
from controller import all as controllers
from db import db
from local import local, local_manager
from log import client
from middleware import all as all_middleware
from middleware.authorization.model import AnonymousUrlView, Url
from social_service import all as all_social_service
# WSGI application
class Application:
def __init__(self):
self.controllers = controllers
self.url_map = Map([EndpointPrefix("{0}/".format(i), self.controllers[i].get_routes()) for i in range(0, len(self.controllers))])
self.local_domain = urlparse(config.url).netloc
def __call__(self, environ, start_response):
def app(environ, start_response):
request = Request(environ)
local.request = request
if config.debug:
response = self.process_request(request)
else:
try:
response = self.process_request(request)
except Forbidden:
response = self.controllers[0].render_to_response(request, "private.html")
except HTTPException, e:
response = e
except Exception:
client.captureException()
response = InternalServerError()
return response(environ, start_response)
return ClosingIterator(local_manager.make_middleware(app)(environ, start_response), db.remove)
def process_request(self, request):
for middleware in all_middleware:
request = middleware(request)
"""
if (request.user is not None and
request.user.permissions == 0 and
request.user.trusted and
any(request.environ["PATH_INFO"].startswith(p)
for p in ("/blog/post/", "/gallery/view/", "/video/view/",
"/chatlogs/view/", "/library/view/", "/shop/view/"))):
return redirect(self._encrypt_url(request.user.url_token, request.environ["PATH_INFO"]))
if request.environ["PATH_INFO"].startswith("/private/"):
path_info = request.environ["PATH_INFO"]
path_info = path_info[len("/private/"):]
url = db.query(Url).filter(Url.encrypted_url == path_info).first()
if request.user is not None and request.user.trusted:
if url is not None and url.user != request.user:
return redirect(self._encrypt_url(request.user.url_token, url.decrypted_url))
path_info_encrypted = path_info
path_info = AES.new(request.user.url_token).decrypt(unhexlify(path_info)).rstrip("@")
url = db.query(Url).filter(Url.encrypted_url == path_info_encrypted).first()
if url is None:
url = Url()
url.encrypted_url = path_info_encrypted
url.decrypted_url = path_info
url.user = request.user
db.add(url)
else:
if url is None:
raise Forbidden()
if not any(url.decrypted_url.startswith(p)
for p in ("/blog/post/", "/gallery/view/", "/video/view/",
"/chatlogs/view/", "/library/view/", "/shop/view/")):
raise Forbidden()
auv = db.query(AnonymousUrlView).filter(AnonymousUrlView.anonymous == request.anonymous,
AnonymousUrlView.url == url).first()
if auv is None:
auv = AnonymousUrlView()
auv.anonymous = request.anonymous
auv.url = url
db.add(auv)
db.flush()
path_info = url.decrypted_url
request.environ["PATH_INFO"] = path_info
request = Request(request.environ)
local.request = request
for middleware in all_middleware:
request = middleware(request)
else:
if request.user is None or not request.user.trusted:
if not (request.host.startswith("i.") or
request.remote_addr == "127.0.0.1" or
request.remote_addr.startswith("172.") or
any(request.environ["PATH_INFO"].startswith(p)
for p in ("/authorization/", "/content/post-comment/"))):
raise Forbidden()
"""
if request.user is None or not request.user.trusted:
if not (request.host.startswith("i.") or
request.remote_addr == "127.0.0.1" or
request.remote_addr.startswith("172.") or
any(request.environ["PATH_INFO"].startswith(p)
for p in ("/authorization/",))):
raise Forbidden()
endpoint, values = self.url_map.bind_to_environ(request.environ, server_name=urlparse(config.url).netloc.split(":")[0]).match()
controller, controller_endpoint = endpoint.split("/", 1)
controller = self.controllers[int(controller)]
controller_method = "execute_{0}".format(controller_endpoint)
response = getattr(controller, controller_method)(request, **values)
"""
if request.anonymous is not None:
response.set_cookie("a", request.anonymous.token, expires=datetime.now() + timedelta(days=365))
if request.user is not None and request.user.permissions == 0:
if isinstance(response.data, str):
response.data = re.sub('(data-url|href)="(.+?)"',
partial(self._hide_url_callback, request.user.url_token),
response.data)
if "Location" in response.headers:
response.headers["Location"] = self._encrypt_url(request.user.url_token,
response.headers["Location"])
if request.anonymous:
if "Location" in response.headers:
parts = self._encrypt_url_parts(response.headers["Location"])
if parts:
url_prefix, url, anchor = parts
url_view = db.query(AnonymousUrlView).\
join(Url).\
filter(AnonymousUrlView.anonymous == request.anonymous,
Url.decrypted_url == url).\
first()
if url_view:
response.headers["Location"] = self._build_url(url_prefix, url_view.url.encrypted_url, anchor)
"""
return response
def _hide_url_callback(self, url_token, m):
return '%s="%s"' % (m.group(1), self._encrypt_url(url_token, m.group(2)))
def _encrypt_url(self, url_token, url):
cipher = AES.new(url_token)
parts = self._encrypt_url_parts(url)
if parts:
url_prefix, url, anchor = parts
url = self._build_url(url_prefix, hexlify(cipher.encrypt(self._pad(url))), anchor)
return url
def _encrypt_url_parts(self, url):
if "#" in url:
url, anchor = url.split("#", 1)
else:
anchor = None
if url != "":
result = urlparse(url)
if ((result.netloc == "" or result.netloc.endswith(self.local_domain)) and
not any(result.path.startswith(p) for p in ("/asset", "/data", "/images", "/favicon.ico"))):
if result.path == "":
url_prefix = ""
else:
url_prefix = url.split(result.path)[0]
return url_prefix, url[len(url_prefix):], anchor
return None
def _build_url(self, url_prefix, encrypted_url, anchor):
url = url_prefix + "/private/%s" % encrypted_url
if anchor is not None:
url += "#%s" % anchor
return url
def _pad(self, s):
BLOCK_SIZE = 32
return s + (BLOCK_SIZE - len(s) % BLOCK_SIZE) * "@"