mirror of
https://mau.dev/maunium/synapse.git
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91 lines
3.1 KiB
Python
91 lines
3.1 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2020 The Matrix.org Foundation C.I.C.
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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, Optional
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from synapse.handlers._base import BaseHandler
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from synapse.http.server import respond_with_html
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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 MappingException(Exception):
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"""Used to catch errors when mapping the UserInfo object
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"""
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class SsoHandler(BaseHandler):
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def __init__(self, hs: "HomeServer"):
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super().__init__(hs)
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self._error_template = hs.config.sso_error_template
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def render_error(
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self, request, error: str, error_description: Optional[str] = None
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) -> None:
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"""Renders the error template and responds with it.
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This is used to show errors to the user. The template of this page can
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be found under `synapse/res/templates/sso_error.html`.
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Args:
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request: The incoming request from the browser.
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We'll respond with an HTML page describing the error.
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error: A technical identifier for this error.
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error_description: A human-readable description of the error.
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"""
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html = self._error_template.render(
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error=error, error_description=error_description
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)
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respond_with_html(request, 400, html)
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async def get_sso_user_by_remote_user_id(
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self, auth_provider_id: str, remote_user_id: str
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) -> Optional[str]:
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"""
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Maps the user ID of a remote IdP to a mxid for a previously seen user.
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If the user has not been seen yet, this will return None.
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Args:
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auth_provider_id: A unique identifier for this SSO provider, e.g.
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"oidc" or "saml".
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remote_user_id: The user ID according to the remote IdP. This might
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be an e-mail address, a GUID, or some other form. It must be
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unique and immutable.
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Returns:
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The mxid of a previously seen user.
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"""
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# Check if we already have a mapping for this user.
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logger.info(
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"Looking for existing mapping for user %s:%s",
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auth_provider_id,
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remote_user_id,
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)
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previously_registered_user_id = await self.store.get_user_by_external_id(
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auth_provider_id, remote_user_id,
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)
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# A match was found, return the user ID.
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if previously_registered_user_id is not None:
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logger.info("Found existing mapping %s", previously_registered_user_id)
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return previously_registered_user_id
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# No match.
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return None
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