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# -*- coding: utf-8 -*-
# Copyright 2014, 2015 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from twisted.internet import defer
from synapse.api.errors import SynapseError
from synapse.types import UserID
from base import ClientV1RestServlet, client_path_pattern
import simplejson as json
import cgi
import urllib
import logging
from saml2 import BINDING_HTTP_REDIRECT
from saml2 import BINDING_HTTP_POST
from saml2.metadata import create_metadata_string
from saml2 import config
from saml2.client import Saml2Client
from saml2.httputil import ServiceError
from saml2.samlp import Extensions
from saml2.extension.pefim import SPCertEnc
from saml2.s_utils import rndstr
class LoginRestServlet(ClientV1RestServlet):
PATTERN = client_path_pattern("/login$")
PASS_TYPE = "m.login.password"
SAML2_TYPE = "m.login.saml2"
def __init__(self, hs):
super(LoginRestServlet, self).__init__(hs)
self.idp_redirect_url = hs.config.saml2_config['idp_redirect_url']
def on_GET(self, request):
return (200, {"flows": [{"type": LoginRestServlet.PASS_TYPE},
{"type": LoginRestServlet.SAML2_TYPE}]})
def on_OPTIONS(self, request):
return (200, {})
@defer.inlineCallbacks
def on_POST(self, request):
login_submission = _parse_json(request)
try:
if login_submission["type"] == LoginRestServlet.PASS_TYPE:
result = yield self.do_password_login(login_submission)
defer.returnValue(result)
elif login_submission["type"] == LoginRestServlet.SAML2_TYPE:
relay_state = ""
if "relay_state" in login_submission:
relay_state = "&RelayState="+urllib.quote(
login_submission["relay_state"])
result = {
"uri": "%s%s" % (self.idp_redirect_url, relay_state)
}
defer.returnValue((200, result))
else:
raise SynapseError(400, "Bad login type.")
except KeyError:
raise SynapseError(400, "Missing JSON keys.")
@defer.inlineCallbacks
def do_password_login(self, login_submission):
if not login_submission["user"].startswith('@'):
login_submission["user"] = UserID.create(
login_submission["user"], self.hs.hostname).to_string()
handler = self.handlers.login_handler
token = yield handler.login(
user=login_submission["user"],
password=login_submission["password"])
result = {
"user_id": login_submission["user"], # may have changed
"access_token": token,
"home_server": self.hs.hostname,
}
defer.returnValue((200, result))
class LoginFallbackRestServlet(ClientV1RestServlet):
PATTERN = client_path_pattern("/login/fallback$")
def on_GET(self, request):
# TODO(kegan): This should be returning some HTML which is capable of
# hitting LoginRestServlet
return (200, {})
class PasswordResetRestServlet(ClientV1RestServlet):
PATTERN = client_path_pattern("/login/reset")
@defer.inlineCallbacks
def on_POST(self, request):
reset_info = _parse_json(request)
try:
email = reset_info["email"]
user_id = reset_info["user_id"]
handler = self.handlers.login_handler
yield handler.reset_password(user_id, email)
# purposefully give no feedback to avoid people hammering different
# combinations.
defer.returnValue((200, {}))
except KeyError:
raise SynapseError(
400,
"Missing keys. Requires 'email' and 'user_id'."
)
class SAML2RestServlet(ClientV1RestServlet):
PATTERN = client_path_pattern("/login/saml2")
def __init__(self, hs):
super(SAML2RestServlet, self).__init__(hs)
self.sp_config = hs.config.saml2_config['config_path']
@defer.inlineCallbacks
def on_POST(self, request):
saml2_auth = None
try:
conf = config.SPConfig()
conf.load_file(self.sp_config)
SP = Saml2Client(conf)
saml2_auth = SP.parse_authn_request_response(
request.args['SAMLResponse'][0], BINDING_HTTP_POST)
except Exception, e: # Not authenticated
logger = logging.getLogger(__name__)
logger.exception(e)
if saml2_auth and saml2_auth.status_ok() and not saml2_auth.not_signed:
username = saml2_auth.name_id.text
handler = self.handlers.registration_handler
(user_id, token) = yield handler.register_saml2(username)
# Forward to the RelayState callback along with ava
if 'RelayState' in request.args:
request.redirect(urllib.unquote(
request.args['RelayState'][0]) +
'?status=authenticated&access_token=' +
token + '&user_id=' + user_id + '&ava=' +
urllib.quote(json.dumps(saml2_auth.ava)))
request.finish()
defer.returnValue(None)
defer.returnValue((200, {"status": "authenticated",
"user_id": user_id, "token": token,
"ava": saml2_auth.ava}))
elif 'RelayState' in request.args:
request.redirect(urllib.unquote(
request.args['RelayState'][0]) +
'?status=not_authenticated')
request.finish()
defer.returnValue(None)
defer.returnValue((200, {"status": "not_authenticated"}))
def _parse_json(request):
try:
content = json.loads(request.content.read())
if type(content) != dict:
raise SynapseError(400, "Content must be a JSON object.")
return content
except ValueError:
raise SynapseError(400, "Content not JSON.")
def register_servlets(hs, http_server):
LoginRestServlet(hs).register(http_server)
SAML2RestServlet(hs).register(http_server)
# TODO PasswordResetRestServlet(hs).register(http_server)
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