1 files changed, 6 insertions, 46 deletions
diff --git a/synapse/rest/saml2/response_resource.py b/synapse/rest/saml2/response_resource.py
index ab14b70675..69ecc5e4b4 100644
--- a/synapse/rest/saml2/response_resource.py
+++ b/synapse/rest/saml2/response_resource.py
@@ -13,59 +13,19 @@
 # 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.http.server import DirectServeResource, wrap_html_request_handler
 
-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):
+class SAML2ResponseResource(DirectServeResource):
     """A Twisted web resource which handles the SAML response"""
 
     isLeaf = 1
 
     def __init__(self, hs):
-        Resource.__init__(self)
-
-        self._saml_client = Saml2Client(hs.config.saml2_sp_config)
-        self._sso_auth_handler = SSOAuthHandler(hs)
-
-    def render_POST(self, request):
-        self._async_render_POST(request)
-        return NOT_DONE_YET
+        super().__init__()
+        self._saml_handler = hs.get_saml_handler()
 
     @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
-        )
+    async def _async_render_POST(self, request):
+        return await self._saml_handler.handle_saml_response(request)