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# ========================================================================
# Copyright (c) 2007, Metaweb Technologies, Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials provided
# with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY METAWEB TECHNOLOGIES AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL METAWEB
# TECHNOLOGIES OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# ========================================================================
#
#
# httplib2cookie.py allows you to use python's standard
# CookieJar class with httplib2.
#
#
import re
try:
from google.appengine.api import urlfetch
Http = object
except ImportError:
pass
try:
from httplib2 import Http
except ImportError:
pass
try:
import urllib
except ImportError:
import urllib_stub as urllib
import cookielib
class DummyRequest(object):
"""Simulated urllib2.Request object for httplib2
implements only what's necessary for cookielib.CookieJar to work
"""
def __init__(self, url, headers=None):
self.url = url
self.headers = headers
self.origin_req_host = cookielib.request_host(self)
self.type, r = urllib.splittype(url)
self.host, r = urllib.splithost(r)
if self.host:
self.host = urllib.unquote(self.host)
def get_full_url(self):
return self.url
def get_origin_req_host(self):
# TODO to match urllib2 this should be different for redirects
return self.origin_req_host
def get_type(self):
return self.type
def get_host(self):
return self.host
def get_header(self, key, default=None):
return self.headers.get(key.lower(), default)
def has_header(self, key):
return key in self.headers
def add_unredirected_header(self, key, val):
# TODO this header should not be sent on redirect
self.headers[key.lower()] = val
def is_unverifiable(self):
# TODO to match urllib2, this should be set to True when the
# request is the result of a redirect
return False
class DummyHttplib2Response(object):
"""Simulated urllib2.Request object for httplib2
implements only what's necessary for cookielib.CookieJar to work
"""
def __init__(self, response):
self.response = response
def info(self):
return DummyHttplib2Message(self.response)
class DummyUrlfetchResponse(object):
"""Simulated urllib2.Request object for httplib2
implements only what's necessary for cookielib.CookieJar to work
"""
def __init__(self, response):
self.response = response
def info(self):
return DummyUrlfetchMessage(self.response)
class DummyHttplib2Message(object):
"""Simulated mimetools.Message object for httplib2
implements only what's necessary for cookielib.CookieJar to work
"""
def __init__(self, response):
self.response = response
def getheaders(self, k):
k = k.lower()
v = self.response.get(k.lower(), None)
if k not in self.response:
return []
#return self.response[k].split(re.compile(',\\s*'))
# httplib2 joins multiple values for the same header
# using ','. but the netscape cookie format uses ','
# as part of the expires= date format. so we have
# to split carefully here - header.split(',') won't do it.
HEADERVAL= re.compile(r'\s*(([^,]|(,\s*\d))+)')
return [h[0] for h in HEADERVAL.findall(self.response[k])]
class DummyUrlfetchMessage(object):
"""Simulated mimetools.Message object for httplib2
implements only what's necessary for cookielib.CookieJar to work
"""
def __init__(self, response):
self.response = response
def getheaders(self, k):
k = k.lower()
v = self.response.headers.get(k.lower(), None)
if k not in self.response.headers:
return []
#return self.response[k].split(re.compile(',\\s*'))
# httplib2 joins multiple values for the same header
# using ','. but the netscape cookie format uses ','
# as part of the expires= date format. so we have
# to split carefully here - header.split(',') won't do it.
HEADERVAL= re.compile(r'\s*(([^,]|(,\s*\d))+)')
return [h[0] for h in HEADERVAL.findall(self.response.headers[k])]
class CookiefulHttp(Http):
"""Subclass of httplib2.Http that keeps cookie state
constructor takes an optional cookiejar=cookielib.CookieJar
currently this does not handle redirects completely correctly:
if the server redirects to a different host the original
cookies will still be sent to that host.
"""
def __init__(self, cookiejar=None, **kws):
# note that httplib2.Http is not a new-style-class
Http.__init__(self, **kws)
if cookiejar is None:
cookiejar = cookielib.CookieJar()
self.cookiejar = cookiejar
def request(self, uri, **kws):
headers = kws.pop('headers', None)
req = DummyRequest(uri, headers)
self.cookiejar.add_cookie_header(req)
headers = req.headers
(r, body) = Http.request(self, uri, headers=headers, **kws)
resp = DummyHttplib2Response(r)
self.cookiejar.extract_cookies(resp, req)
return (r, body)
class CookiefulUrlfetch(object):
"""Class that keeps cookie state
constructor takes an optional cookiejar=cookielib.CookieJar
"""
# TODO refactor CookefulHttp so that CookiefulUrlfetch can be a subclass of it
def __init__(self, cookiejar=None, **kws):
if cookiejar is None:
cookejar = cookielib.CookieJar()
self.cookejar = cookiejar
def request(self, uri, **kws):
headers = kws.pop('headers', None)
req = DummyRequest(uri, headers)
self.cookejar.add_cookie_header(req)
headers = req.headers
r = urlfetch.fetch(uri, headers=headers, **kws)
self.cookejar.extract_cookies(DummyUrlfetchResponse(r), req)
return r
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