synapse-product/synapse/rest/saml2/response_resource.py
Brendan Abolivier 6b0efe73e2
SAML2: render a comprehensible error page if something goes wrong
If an error happened while processing a SAML AuthN response, or a client
ends up doing a `GET` request to `/authn_response`, then render a
customisable error page rather than a confusing error.
2020-03-10 13:59:22 +00:00

48 lines
1.8 KiB
Python

# -*- coding: utf-8 -*-
#
# Copyright 2018 New Vector 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 synapse.http.server import (
DirectServeResource,
finish_request,
wrap_html_request_handler,
)
class SAML2ResponseResource(DirectServeResource):
"""A Twisted web resource which handles the SAML response"""
isLeaf = 1
def __init__(self, hs):
super().__init__()
self._error_html_content = hs.config.saml2_error_html_content
self._saml_handler = hs.get_saml_handler()
async def _async_render_GET(self, request):
# We're not expecting any GET request on that resource if everything goes right,
# but some IdPs sometimes end up responding with a 302 redirect on this endpoint.
# In this case, just tell the user that something went wrong and they should
# try to authenticate again.
request.setResponseCode(400)
request.setHeader(b"Content-Type", b"text/html; charset=utf-8")
request.setHeader(b"Content-Length", b"%d" % (len(self._error_html_content),))
request.write(self._error_html_content.encode("utf8"))
finish_request(request)
@wrap_html_request_handler
async def _async_render_POST(self, request):
return await self._saml_handler.handle_saml_response(request)