diff options
| -rw-r--r-- | synapse/handlers/saml2_handler.py | 86 | ||||
| -rw-r--r-- | synapse/rest/client/v1/login.py | 13 | ||||
| -rw-r--r-- | synapse/rest/saml2/response_resource.py | 35 | ||||
| -rw-r--r-- | synapse/server.py | 12 |
4 files changed, 96 insertions, 50 deletions
diff --git a/synapse/handlers/saml2_handler.py b/synapse/handlers/saml2_handler.py new file mode 100644 index 0000000000..880e6a625f --- /dev/null +++ b/synapse/handlers/saml2_handler.py @@ -0,0 +1,86 @@ +# -*- coding: utf-8 -*- +# Copyright 2019 The Matrix.org Foundation C.I.C. +# +# 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. +import logging + +import saml2 +from saml2.client import Saml2Client + +from synapse.api.errors import CodeMessageException +from synapse.http.servlet import parse_string +from synapse.rest.client.v1.login import SSOAuthHandler + +logger = logging.getLogger(__name__) + + +class Saml2Handler: + def __init__(self, hs): + self._saml_client = Saml2Client(hs.config.saml2_sp_config) + self._sso_auth_handler = SSOAuthHandler(hs) + + def handle_redirect_request(self, client_redirect_url): + """Handle an incoming request to /login/sso/redirect + + Args: + client_redirect_url (bytes): the URL that we should redirect the + client to when everything is done + + Returns: + bytes: URL to redirect to + """ + reqid, info = self._saml_client.prepare_for_authenticate( + relay_state=client_redirect_url + ) + + for key, value in info["headers"]: + if key == "Location": + return value + + # this shouldn't happen! + raise Exception("prepare_for_authenticate didn't return a Location header") + + def handle_saml_response(self, request): + """Handle an incoming request to /_matrix/saml2/authn_response + + Args: + request (SynapseRequest): the incoming request from the browser. We'll + respond to it with a redirect. + + Returns: + Deferred[none]: Completes once we have handled the request. + """ + resp_bytes = parse_string(request, "SAMLResponse", required=True) + relay_state = parse_string(request, "RelayState", required=True) + + try: + saml2_auth = self._saml_client.parse_authn_request_response( + resp_bytes, saml2.BINDING_HTTP_POST + ) + except Exception as e: + logger.warning("Exception parsing SAML2 response", exc_info=1) + raise CodeMessageException(400, "Unable to parse SAML2 response: %s" % (e,)) + + if saml2_auth.not_signed: + raise CodeMessageException(400, "SAML2 response was not signed") + + if "uid" not in saml2_auth.ava: + raise CodeMessageException(400, "uid not in SAML2 response") + + username = saml2_auth.ava["uid"][0] + + displayName = saml2_auth.ava.get("displayName", [None])[0] + + return self._sso_auth_handler.on_successful_auth( + username, request, relay_state, user_display_name=displayName + ) diff --git a/synapse/rest/client/v1/login.py b/synapse/rest/client/v1/login.py index a31d277935..b59aa3d5c9 100644 --- a/synapse/rest/client/v1/login.py +++ b/synapse/rest/client/v1/login.py @@ -487,19 +487,10 @@ class SAMLRedirectServlet(BaseSsoRedirectServlet): PATTERNS = client_patterns("/login/sso/redirect", v1=True) def __init__(self, hs): - self._saml_client = hs.get_saml_client() + self._saml_handler = hs.get_saml_handler() def get_sso_url(self, client_redirect_url): - reqid, info = self._saml_client.prepare_for_authenticate( - relay_state=client_redirect_url - ) - - for key, value in info["headers"]: - if key == "Location": - return value - - # this shouldn't happen! - raise Exception("prepare_for_authenticate didn't return a Location header") + return self._saml_handler.handle_redirect_request(client_redirect_url) class SSOAuthHandler(object): diff --git a/synapse/rest/saml2/response_resource.py b/synapse/rest/saml2/response_resource.py index 9ec56d6adb..8ee22473e9 100644 --- a/synapse/rest/saml2/response_resource.py +++ b/synapse/rest/saml2/response_resource.py @@ -13,19 +13,11 @@ # 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. -import logging - -import saml2 from twisted.web.resource import Resource from twisted.web.server import NOT_DONE_YET -from synapse.api.errors import CodeMessageException from synapse.http.server import wrap_html_request_handler -from synapse.http.servlet import parse_string -from synapse.rest.client.v1.login import SSOAuthHandler - -logger = logging.getLogger(__name__) class SAML2ResponseResource(Resource): @@ -35,8 +27,7 @@ class SAML2ResponseResource(Resource): def __init__(self, hs): Resource.__init__(self) - self._saml_client = hs.get_saml_client() - self._sso_auth_handler = SSOAuthHandler(hs) + self._saml_handler = hs.get_saml_handler() def render_POST(self, request): self._async_render_POST(request) @@ -44,26 +35,4 @@ class SAML2ResponseResource(Resource): @wrap_html_request_handler def _async_render_POST(self, request): - resp_bytes = parse_string(request, "SAMLResponse", required=True) - relay_state = parse_string(request, "RelayState", required=True) - - try: - saml2_auth = self._saml_client.parse_authn_request_response( - resp_bytes, saml2.BINDING_HTTP_POST - ) - except Exception as e: - logger.warning("Exception parsing SAML2 response", exc_info=1) - raise CodeMessageException(400, "Unable to parse SAML2 response: %s" % (e,)) - - if saml2_auth.not_signed: - raise CodeMessageException(400, "SAML2 response was not signed") - - if "uid" not in saml2_auth.ava: - raise CodeMessageException(400, "uid not in SAML2 response") - - username = saml2_auth.ava["uid"][0] - - displayName = saml2_auth.ava.get("displayName", [None])[0] - return self._sso_auth_handler.on_successful_auth( - username, request, relay_state, user_display_name=displayName - ) + return self._saml_handler.handle_saml_response(request) diff --git a/synapse/server.py b/synapse/server.py index dbb35c7227..1bc8c08b58 100644 --- a/synapse/server.py +++ b/synapse/server.py @@ -194,8 +194,8 @@ class HomeServer(object): "sendmail", "registration_handler", "account_validity_handler", + "saml2_handler", "event_client_serializer", - "saml_client", ] REQUIRED_ON_MASTER_STARTUP = ["user_directory_handler", "stats_handler"] @@ -525,13 +525,13 @@ class HomeServer(object): def build_account_validity_handler(self): return AccountValidityHandler(self) - def build_event_client_serializer(self): - return EventClientSerializer(self) + def build_saml2_handler(self): + from synapse.handlers.saml2_handler import Saml2Handler - def build_saml_client(self): - from saml2.client import Saml2Client + return Saml2Handler(self) - return Saml2Client(self.config.saml2_sp_config) + def build_event_client_serializer(self): + return EventClientSerializer(self) def remove_pusher(self, app_id, push_key, user_id): return self.get_pusherpool().remove_pusher(app_id, push_key, user_id) |