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https://git.anonymousland.org/anonymousland/synapse.git
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789d9ebad3
If we have integrations with multiple identity providers, when the user does a UI Auth, we need to redirect them to the right one. There are a few steps to this. First of all we actually need to store the userid of the user we are trying to validate in the UIA session, since the /auth/sso/fallback/web request is unauthenticated. Then, once we get the /auth/sso/fallback/web request, we can fish the user id out of the session, and use it to look up the external id mappings, and hence pick an SSO provider for them.
145 lines
5.2 KiB
Python
145 lines
5.2 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2015, 2016 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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from typing import TYPE_CHECKING
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from synapse.api.constants import LoginType
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from synapse.api.errors import SynapseError
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from synapse.api.urls import CLIENT_API_PREFIX
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from synapse.http.server import respond_with_html
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from synapse.http.servlet import RestServlet, parse_string
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from ._base import client_patterns
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if TYPE_CHECKING:
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from synapse.server import HomeServer
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logger = logging.getLogger(__name__)
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class AuthRestServlet(RestServlet):
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"""
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Handles Client / Server API authentication in any situations where it
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cannot be handled in the normal flow (with requests to the same endpoint).
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Current use is for web fallback auth.
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"""
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PATTERNS = client_patterns(r"/auth/(?P<stagetype>[\w\.]*)/fallback/web")
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def __init__(self, hs: "HomeServer"):
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super().__init__()
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self.hs = hs
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self.auth = hs.get_auth()
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self.auth_handler = hs.get_auth_handler()
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self.registration_handler = hs.get_registration_handler()
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self.recaptcha_template = hs.config.recaptcha_template
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self.terms_template = hs.config.terms_template
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self.success_template = hs.config.fallback_success_template
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async def on_GET(self, request, stagetype):
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session = parse_string(request, "session")
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if not session:
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raise SynapseError(400, "No session supplied")
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if stagetype == LoginType.RECAPTCHA:
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html = self.recaptcha_template.render(
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session=session,
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myurl="%s/r0/auth/%s/fallback/web"
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% (CLIENT_API_PREFIX, LoginType.RECAPTCHA),
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sitekey=self.hs.config.recaptcha_public_key,
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)
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elif stagetype == LoginType.TERMS:
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html = self.terms_template.render(
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session=session,
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terms_url="%s_matrix/consent?v=%s"
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% (self.hs.config.public_baseurl, self.hs.config.user_consent_version),
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myurl="%s/r0/auth/%s/fallback/web"
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% (CLIENT_API_PREFIX, LoginType.TERMS),
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)
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elif stagetype == LoginType.SSO:
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# Display a confirmation page which prompts the user to
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# re-authenticate with their SSO provider.
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html = await self.auth_handler.start_sso_ui_auth(request, session)
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else:
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raise SynapseError(404, "Unknown auth stage type")
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# Render the HTML and return.
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respond_with_html(request, 200, html)
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return None
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async def on_POST(self, request, stagetype):
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session = parse_string(request, "session")
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if not session:
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raise SynapseError(400, "No session supplied")
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if stagetype == LoginType.RECAPTCHA:
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response = parse_string(request, "g-recaptcha-response")
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if not response:
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raise SynapseError(400, "No captcha response supplied")
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authdict = {"response": response, "session": session}
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success = await self.auth_handler.add_oob_auth(
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LoginType.RECAPTCHA, authdict, request.getClientIP()
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)
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if success:
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html = self.success_template.render()
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else:
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html = self.recaptcha_template.render(
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session=session,
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myurl="%s/r0/auth/%s/fallback/web"
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% (CLIENT_API_PREFIX, LoginType.RECAPTCHA),
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sitekey=self.hs.config.recaptcha_public_key,
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)
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elif stagetype == LoginType.TERMS:
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authdict = {"session": session}
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success = await self.auth_handler.add_oob_auth(
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LoginType.TERMS, authdict, request.getClientIP()
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)
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if success:
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html = self.success_template.render()
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else:
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html = self.terms_template.render(
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session=session,
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terms_url="%s_matrix/consent?v=%s"
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% (
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self.hs.config.public_baseurl,
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self.hs.config.user_consent_version,
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),
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myurl="%s/r0/auth/%s/fallback/web"
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% (CLIENT_API_PREFIX, LoginType.TERMS),
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)
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elif stagetype == LoginType.SSO:
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# The SSO fallback workflow should not post here,
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raise SynapseError(404, "Fallback SSO auth does not support POST requests.")
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else:
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raise SynapseError(404, "Unknown auth stage type")
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# Render the HTML and return.
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respond_with_html(request, 200, html)
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return None
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def register_servlets(hs, http_server):
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AuthRestServlet(hs).register(http_server)
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