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963f4309fe
This should fix a class of bug where we forget to check if e.g. the appservice shouldn't be ratelimited. We also check the `ratelimit_override` table to check if the user has ratelimiting disabled. That table is really only meant to override the event sender ratelimiting, so we don't use any values from it (as they might not make sense for different rate limits), but we do infer that if ratelimiting is disabled for the user we should disabled all ratelimits. Fixes #9663
964 lines
37 KiB
Python
964 lines
37 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2015, 2016 OpenMarket Ltd
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# Copyright 2017 Vector Creations Ltd
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# Copyright 2018 New Vector 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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"""Utilities for interacting with Identity Servers"""
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import logging
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import urllib.parse
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from typing import Awaitable, Callable, Dict, List, Optional, Tuple
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from synapse.api.errors import (
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CodeMessageException,
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Codes,
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HttpResponseException,
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SynapseError,
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)
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from synapse.api.ratelimiting import Ratelimiter
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from synapse.config.emailconfig import ThreepidBehaviour
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from synapse.http import RequestTimedOutError
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from synapse.http.client import SimpleHttpClient
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from synapse.http.site import SynapseRequest
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from synapse.types import JsonDict, Requester
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from synapse.util import json_decoder
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from synapse.util.hash import sha256_and_url_safe_base64
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from synapse.util.stringutils import assert_valid_client_secret, random_string
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from ._base import BaseHandler
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logger = logging.getLogger(__name__)
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id_server_scheme = "https://"
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class IdentityHandler(BaseHandler):
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def __init__(self, hs):
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super().__init__(hs)
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# An HTTP client for contacting trusted URLs.
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self.http_client = SimpleHttpClient(hs)
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# An HTTP client for contacting identity servers specified by clients.
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self.blacklisting_http_client = SimpleHttpClient(
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hs, ip_blacklist=hs.config.federation_ip_range_blacklist
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)
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self.federation_http_client = hs.get_federation_http_client()
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self.hs = hs
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self._web_client_location = hs.config.invite_client_location
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# Ratelimiters for `/requestToken` endpoints.
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self._3pid_validation_ratelimiter_ip = Ratelimiter(
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store=self.store,
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clock=hs.get_clock(),
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rate_hz=hs.config.ratelimiting.rc_3pid_validation.per_second,
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burst_count=hs.config.ratelimiting.rc_3pid_validation.burst_count,
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)
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self._3pid_validation_ratelimiter_address = Ratelimiter(
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store=self.store,
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clock=hs.get_clock(),
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rate_hz=hs.config.ratelimiting.rc_3pid_validation.per_second,
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burst_count=hs.config.ratelimiting.rc_3pid_validation.burst_count,
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)
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async def ratelimit_request_token_requests(
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self,
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request: SynapseRequest,
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medium: str,
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address: str,
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):
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"""Used to ratelimit requests to `/requestToken` by IP and address.
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Args:
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request: The associated request
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medium: The type of threepid, e.g. "msisdn" or "email"
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address: The actual threepid ID, e.g. the phone number or email address
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"""
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await self._3pid_validation_ratelimiter_ip.ratelimit(
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None, (medium, request.getClientIP())
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)
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await self._3pid_validation_ratelimiter_address.ratelimit(
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None, (medium, address)
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)
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async def threepid_from_creds(
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self, id_server: str, creds: Dict[str, str]
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) -> Optional[JsonDict]:
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"""
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Retrieve and validate a threepid identifier from a "credentials" dictionary against a
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given identity server
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Args:
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id_server: The identity server to validate 3PIDs against. Must be a
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complete URL including the protocol (http(s)://)
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creds: Dictionary containing the following keys:
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* client_secret|clientSecret: A unique secret str provided by the client
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* sid: The ID of the validation session
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Returns:
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A dictionary consisting of response params to the /getValidated3pid
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endpoint of the Identity Service API, or None if the threepid was not found
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"""
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client_secret = creds.get("client_secret") or creds.get("clientSecret")
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if not client_secret:
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raise SynapseError(
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400, "Missing param client_secret in creds", errcode=Codes.MISSING_PARAM
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)
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assert_valid_client_secret(client_secret)
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session_id = creds.get("sid")
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if not session_id:
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raise SynapseError(
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400, "Missing param session_id in creds", errcode=Codes.MISSING_PARAM
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)
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query_params = {"sid": session_id, "client_secret": client_secret}
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url = id_server + "/_matrix/identity/api/v1/3pid/getValidated3pid"
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try:
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data = await self.http_client.get_json(url, query_params)
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except RequestTimedOutError:
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raise SynapseError(500, "Timed out contacting identity server")
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except HttpResponseException as e:
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logger.info(
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"%s returned %i for threepid validation for: %s",
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id_server,
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e.code,
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creds,
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)
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return None
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# Old versions of Sydent return a 200 http code even on a failed validation
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# check. Thus, in addition to the HttpResponseException check above (which
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# checks for non-200 errors), we need to make sure validation_session isn't
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# actually an error, identified by the absence of a "medium" key
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# See https://github.com/matrix-org/sydent/issues/215 for details
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if "medium" in data:
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return data
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logger.info("%s reported non-validated threepid: %s", id_server, creds)
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return None
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async def bind_threepid(
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self,
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client_secret: str,
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sid: str,
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mxid: str,
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id_server: str,
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id_access_token: Optional[str] = None,
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use_v2: bool = True,
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) -> JsonDict:
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"""Bind a 3PID to an identity server
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Args:
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client_secret: A unique secret provided by the client
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sid: The ID of the validation session
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mxid: The MXID to bind the 3PID to
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id_server: The domain of the identity server to query
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id_access_token: The access token to authenticate to the identity
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server with, if necessary. Required if use_v2 is true
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use_v2: Whether to use v2 Identity Service API endpoints. Defaults to True
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Returns:
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The response from the identity server
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"""
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logger.debug("Proxying threepid bind request for %s to %s", mxid, id_server)
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# If an id_access_token is not supplied, force usage of v1
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if id_access_token is None:
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use_v2 = False
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# Decide which API endpoint URLs to use
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headers = {}
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bind_data = {"sid": sid, "client_secret": client_secret, "mxid": mxid}
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if use_v2:
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bind_url = "https://%s/_matrix/identity/v2/3pid/bind" % (id_server,)
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headers["Authorization"] = create_id_access_token_header(id_access_token) # type: ignore
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else:
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bind_url = "https://%s/_matrix/identity/api/v1/3pid/bind" % (id_server,)
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try:
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# Use the blacklisting http client as this call is only to identity servers
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# provided by a client
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data = await self.blacklisting_http_client.post_json_get_json(
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bind_url, bind_data, headers=headers
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)
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# Remember where we bound the threepid
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await self.store.add_user_bound_threepid(
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user_id=mxid,
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medium=data["medium"],
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address=data["address"],
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id_server=id_server,
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)
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return data
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except HttpResponseException as e:
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if e.code != 404 or not use_v2:
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logger.error("3PID bind failed with Matrix error: %r", e)
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raise e.to_synapse_error()
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except RequestTimedOutError:
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raise SynapseError(500, "Timed out contacting identity server")
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except CodeMessageException as e:
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data = json_decoder.decode(e.msg) # XXX WAT?
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return data
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logger.info("Got 404 when POSTing JSON %s, falling back to v1 URL", bind_url)
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res = await self.bind_threepid(
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client_secret, sid, mxid, id_server, id_access_token, use_v2=False
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)
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return res
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async def try_unbind_threepid(self, mxid: str, threepid: dict) -> bool:
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"""Attempt to remove a 3PID from an identity server, or if one is not provided, all
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identity servers we're aware the binding is present on
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Args:
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mxid: Matrix user ID of binding to be removed
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threepid: Dict with medium & address of binding to be
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removed, and an optional id_server.
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Raises:
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SynapseError: If we failed to contact the identity server
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Returns:
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True on success, otherwise False if the identity
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server doesn't support unbinding (or no identity server found to
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contact).
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"""
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if threepid.get("id_server"):
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id_servers = [threepid["id_server"]]
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else:
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id_servers = await self.store.get_id_servers_user_bound(
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user_id=mxid, medium=threepid["medium"], address=threepid["address"]
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)
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# We don't know where to unbind, so we don't have a choice but to return
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if not id_servers:
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return False
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changed = True
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for id_server in id_servers:
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changed &= await self.try_unbind_threepid_with_id_server(
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mxid, threepid, id_server
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)
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return changed
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async def try_unbind_threepid_with_id_server(
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self, mxid: str, threepid: dict, id_server: str
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) -> bool:
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"""Removes a binding from an identity server
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Args:
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mxid: Matrix user ID of binding to be removed
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threepid: Dict with medium & address of binding to be removed
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id_server: Identity server to unbind from
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Raises:
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SynapseError: If we failed to contact the identity server
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Returns:
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True on success, otherwise False if the identity
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server doesn't support unbinding
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"""
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url = "https://%s/_matrix/identity/api/v1/3pid/unbind" % (id_server,)
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url_bytes = "/_matrix/identity/api/v1/3pid/unbind".encode("ascii")
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content = {
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"mxid": mxid,
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"threepid": {"medium": threepid["medium"], "address": threepid["address"]},
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}
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# we abuse the federation http client to sign the request, but we have to send it
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# using the normal http client since we don't want the SRV lookup and want normal
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# 'browser-like' HTTPS.
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auth_headers = self.federation_http_client.build_auth_headers(
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destination=None,
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method=b"POST",
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url_bytes=url_bytes,
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content=content,
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destination_is=id_server.encode("ascii"),
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)
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headers = {b"Authorization": auth_headers}
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try:
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# Use the blacklisting http client as this call is only to identity servers
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# provided by a client
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await self.blacklisting_http_client.post_json_get_json(
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url, content, headers
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)
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changed = True
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except HttpResponseException as e:
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changed = False
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if e.code in (400, 404, 501):
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# The remote server probably doesn't support unbinding (yet)
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logger.warning("Received %d response while unbinding threepid", e.code)
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else:
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logger.error("Failed to unbind threepid on identity server: %s", e)
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raise SynapseError(500, "Failed to contact identity server")
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except RequestTimedOutError:
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raise SynapseError(500, "Timed out contacting identity server")
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await self.store.remove_user_bound_threepid(
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user_id=mxid,
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medium=threepid["medium"],
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address=threepid["address"],
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id_server=id_server,
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)
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return changed
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async def send_threepid_validation(
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self,
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email_address: str,
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client_secret: str,
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send_attempt: int,
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send_email_func: Callable[[str, str, str, str], Awaitable],
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next_link: Optional[str] = None,
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) -> str:
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"""Send a threepid validation email for password reset or
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registration purposes
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Args:
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email_address: The user's email address
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client_secret: The provided client secret
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send_attempt: Which send attempt this is
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send_email_func: A function that takes an email address, token,
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client_secret and session_id, sends an email
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and returns an Awaitable.
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next_link: The URL to redirect the user to after validation
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Returns:
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The new session_id upon success
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Raises:
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SynapseError is an error occurred when sending the email
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"""
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# Check that this email/client_secret/send_attempt combo is new or
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# greater than what we've seen previously
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session = await self.store.get_threepid_validation_session(
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"email", client_secret, address=email_address, validated=False
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)
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# Check to see if a session already exists and that it is not yet
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# marked as validated
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if session and session.get("validated_at") is None:
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session_id = session["session_id"]
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last_send_attempt = session["last_send_attempt"]
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# Check that the send_attempt is higher than previous attempts
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if send_attempt <= last_send_attempt:
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# If not, just return a success without sending an email
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return session_id
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else:
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# An non-validated session does not exist yet.
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# Generate a session id
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session_id = random_string(16)
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if next_link:
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# Manipulate the next_link to add the sid, because the caller won't get
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# it until we send a response, by which time we've sent the mail.
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if "?" in next_link:
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next_link += "&"
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else:
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next_link += "?"
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next_link += "sid=" + urllib.parse.quote(session_id)
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# Generate a new validation token
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token = random_string(32)
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# Send the mail with the link containing the token, client_secret
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# and session_id
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try:
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await send_email_func(email_address, token, client_secret, session_id)
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except Exception:
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logger.exception(
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"Error sending threepid validation email to %s", email_address
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)
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raise SynapseError(500, "An error was encountered when sending the email")
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token_expires = (
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self.hs.get_clock().time_msec()
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+ self.hs.config.email_validation_token_lifetime
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)
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await self.store.start_or_continue_validation_session(
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"email",
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email_address,
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session_id,
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client_secret,
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send_attempt,
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next_link,
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token,
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token_expires,
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)
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return session_id
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async def requestEmailToken(
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self,
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id_server: str,
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email: str,
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client_secret: str,
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send_attempt: int,
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next_link: Optional[str] = None,
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) -> JsonDict:
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"""
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Request an external server send an email on our behalf for the purposes of threepid
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validation.
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Args:
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id_server: The identity server to proxy to
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email: The email to send the message to
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client_secret: The unique client_secret sends by the user
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send_attempt: Which attempt this is
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next_link: A link to redirect the user to once they submit the token
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Returns:
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The json response body from the server
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"""
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params = {
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"email": email,
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"client_secret": client_secret,
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"send_attempt": send_attempt,
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}
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if next_link:
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params["next_link"] = next_link
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if self.hs.config.using_identity_server_from_trusted_list:
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# Warn that a deprecated config option is in use
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logger.warning(
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'The config option "trust_identity_server_for_password_resets" '
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'has been replaced by "account_threepid_delegate". '
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"Please consult the sample config at docs/sample_config.yaml for "
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"details and update your config file."
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)
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try:
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data = await self.http_client.post_json_get_json(
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id_server + "/_matrix/identity/api/v1/validate/email/requestToken",
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params,
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)
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return data
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except HttpResponseException as e:
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logger.info("Proxied requestToken failed: %r", e)
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raise e.to_synapse_error()
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except RequestTimedOutError:
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raise SynapseError(500, "Timed out contacting identity server")
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|
|
async def requestMsisdnToken(
|
|
self,
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id_server: str,
|
|
country: str,
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phone_number: str,
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client_secret: str,
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send_attempt: int,
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next_link: Optional[str] = None,
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) -> JsonDict:
|
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"""
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Request an external server send an SMS message on our behalf for the purposes of
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threepid validation.
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Args:
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id_server: The identity server to proxy to
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country: The country code of the phone number
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phone_number: The number to send the message to
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client_secret: The unique client_secret sends by the user
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send_attempt: Which attempt this is
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next_link: A link to redirect the user to once they submit the token
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|
Returns:
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The json response body from the server
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"""
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params = {
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"country": country,
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"phone_number": phone_number,
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"client_secret": client_secret,
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"send_attempt": send_attempt,
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}
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if next_link:
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params["next_link"] = next_link
|
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|
|
if self.hs.config.using_identity_server_from_trusted_list:
|
|
# Warn that a deprecated config option is in use
|
|
logger.warning(
|
|
'The config option "trust_identity_server_for_password_resets" '
|
|
'has been replaced by "account_threepid_delegate". '
|
|
"Please consult the sample config at docs/sample_config.yaml for "
|
|
"details and update your config file."
|
|
)
|
|
|
|
try:
|
|
data = await self.http_client.post_json_get_json(
|
|
id_server + "/_matrix/identity/api/v1/validate/msisdn/requestToken",
|
|
params,
|
|
)
|
|
except HttpResponseException as e:
|
|
logger.info("Proxied requestToken failed: %r", e)
|
|
raise e.to_synapse_error()
|
|
except RequestTimedOutError:
|
|
raise SynapseError(500, "Timed out contacting identity server")
|
|
|
|
# It is already checked that public_baseurl is configured since this code
|
|
# should only be used if account_threepid_delegate_msisdn is true.
|
|
assert self.hs.config.public_baseurl
|
|
|
|
# we need to tell the client to send the token back to us, since it doesn't
|
|
# otherwise know where to send it, so add submit_url response parameter
|
|
# (see also MSC2078)
|
|
data["submit_url"] = (
|
|
self.hs.config.public_baseurl
|
|
+ "_matrix/client/unstable/add_threepid/msisdn/submit_token"
|
|
)
|
|
return data
|
|
|
|
async def validate_threepid_session(
|
|
self, client_secret: str, sid: str
|
|
) -> Optional[JsonDict]:
|
|
"""Validates a threepid session with only the client secret and session ID
|
|
Tries validating against any configured account_threepid_delegates as well as locally.
|
|
|
|
Args:
|
|
client_secret: A secret provided by the client
|
|
sid: The ID of the session
|
|
|
|
Returns:
|
|
The json response if validation was successful, otherwise None
|
|
"""
|
|
# XXX: We shouldn't need to keep wrapping and unwrapping this value
|
|
threepid_creds = {"client_secret": client_secret, "sid": sid}
|
|
|
|
# We don't actually know which medium this 3PID is. Thus we first assume it's email,
|
|
# and if validation fails we try msisdn
|
|
validation_session = None
|
|
|
|
# Try to validate as email
|
|
if self.hs.config.threepid_behaviour_email == ThreepidBehaviour.REMOTE:
|
|
# Ask our delegated email identity server
|
|
validation_session = await self.threepid_from_creds(
|
|
self.hs.config.account_threepid_delegate_email, threepid_creds
|
|
)
|
|
elif self.hs.config.threepid_behaviour_email == ThreepidBehaviour.LOCAL:
|
|
# Get a validated session matching these details
|
|
validation_session = await self.store.get_threepid_validation_session(
|
|
"email", client_secret, sid=sid, validated=True
|
|
)
|
|
|
|
if validation_session:
|
|
return validation_session
|
|
|
|
# Try to validate as msisdn
|
|
if self.hs.config.account_threepid_delegate_msisdn:
|
|
# Ask our delegated msisdn identity server
|
|
validation_session = await self.threepid_from_creds(
|
|
self.hs.config.account_threepid_delegate_msisdn, threepid_creds
|
|
)
|
|
|
|
return validation_session
|
|
|
|
async def proxy_msisdn_submit_token(
|
|
self, id_server: str, client_secret: str, sid: str, token: str
|
|
) -> JsonDict:
|
|
"""Proxy a POST submitToken request to an identity server for verification purposes
|
|
|
|
Args:
|
|
id_server: The identity server URL to contact
|
|
client_secret: Secret provided by the client
|
|
sid: The ID of the session
|
|
token: The verification token
|
|
|
|
Raises:
|
|
SynapseError: If we failed to contact the identity server
|
|
|
|
Returns:
|
|
The response dict from the identity server
|
|
"""
|
|
body = {"client_secret": client_secret, "sid": sid, "token": token}
|
|
|
|
try:
|
|
return await self.http_client.post_json_get_json(
|
|
id_server + "/_matrix/identity/api/v1/validate/msisdn/submitToken",
|
|
body,
|
|
)
|
|
except RequestTimedOutError:
|
|
raise SynapseError(500, "Timed out contacting identity server")
|
|
except HttpResponseException as e:
|
|
logger.warning("Error contacting msisdn account_threepid_delegate: %s", e)
|
|
raise SynapseError(400, "Error contacting the identity server")
|
|
|
|
async def lookup_3pid(
|
|
self,
|
|
id_server: str,
|
|
medium: str,
|
|
address: str,
|
|
id_access_token: Optional[str] = None,
|
|
) -> Optional[str]:
|
|
"""Looks up a 3pid in the passed identity server.
|
|
|
|
Args:
|
|
id_server: The server name (including port, if required)
|
|
of the identity server to use.
|
|
medium: The type of the third party identifier (e.g. "email").
|
|
address: The third party identifier (e.g. "foo@example.com").
|
|
id_access_token: The access token to authenticate to the identity
|
|
server with
|
|
|
|
Returns:
|
|
the matrix ID of the 3pid, or None if it is not recognized.
|
|
"""
|
|
if id_access_token is not None:
|
|
try:
|
|
results = await self._lookup_3pid_v2(
|
|
id_server, id_access_token, medium, address
|
|
)
|
|
return results
|
|
|
|
except Exception as e:
|
|
# Catch HttpResponseExcept for a non-200 response code
|
|
# Check if this identity server does not know about v2 lookups
|
|
if isinstance(e, HttpResponseException) and e.code == 404:
|
|
# This is an old identity server that does not yet support v2 lookups
|
|
logger.warning(
|
|
"Attempted v2 lookup on v1 identity server %s. Falling "
|
|
"back to v1",
|
|
id_server,
|
|
)
|
|
else:
|
|
logger.warning("Error when looking up hashing details: %s", e)
|
|
return None
|
|
|
|
return await self._lookup_3pid_v1(id_server, medium, address)
|
|
|
|
async def _lookup_3pid_v1(
|
|
self, id_server: str, medium: str, address: str
|
|
) -> Optional[str]:
|
|
"""Looks up a 3pid in the passed identity server using v1 lookup.
|
|
|
|
Args:
|
|
id_server: The server name (including port, if required)
|
|
of the identity server to use.
|
|
medium: The type of the third party identifier (e.g. "email").
|
|
address: The third party identifier (e.g. "foo@example.com").
|
|
|
|
Returns:
|
|
the matrix ID of the 3pid, or None if it is not recognized.
|
|
"""
|
|
try:
|
|
data = await self.blacklisting_http_client.get_json(
|
|
"%s%s/_matrix/identity/api/v1/lookup" % (id_server_scheme, id_server),
|
|
{"medium": medium, "address": address},
|
|
)
|
|
|
|
if "mxid" in data:
|
|
# note: we used to verify the identity server's signature here, but no longer
|
|
# require or validate it. See the following for context:
|
|
# https://github.com/matrix-org/synapse/issues/5253#issuecomment-666246950
|
|
return data["mxid"]
|
|
except RequestTimedOutError:
|
|
raise SynapseError(500, "Timed out contacting identity server")
|
|
except IOError as e:
|
|
logger.warning("Error from v1 identity server lookup: %s" % (e,))
|
|
|
|
return None
|
|
|
|
async def _lookup_3pid_v2(
|
|
self, id_server: str, id_access_token: str, medium: str, address: str
|
|
) -> Optional[str]:
|
|
"""Looks up a 3pid in the passed identity server using v2 lookup.
|
|
|
|
Args:
|
|
id_server: The server name (including port, if required)
|
|
of the identity server to use.
|
|
id_access_token: The access token to authenticate to the identity server with
|
|
medium: The type of the third party identifier (e.g. "email").
|
|
address: The third party identifier (e.g. "foo@example.com").
|
|
|
|
Returns:
|
|
the matrix ID of the 3pid, or None if it is not recognised.
|
|
"""
|
|
# Check what hashing details are supported by this identity server
|
|
try:
|
|
hash_details = await self.blacklisting_http_client.get_json(
|
|
"%s%s/_matrix/identity/v2/hash_details" % (id_server_scheme, id_server),
|
|
{"access_token": id_access_token},
|
|
)
|
|
except RequestTimedOutError:
|
|
raise SynapseError(500, "Timed out contacting identity server")
|
|
|
|
if not isinstance(hash_details, dict):
|
|
logger.warning(
|
|
"Got non-dict object when checking hash details of %s%s: %s",
|
|
id_server_scheme,
|
|
id_server,
|
|
hash_details,
|
|
)
|
|
raise SynapseError(
|
|
400,
|
|
"Non-dict object from %s%s during v2 hash_details request: %s"
|
|
% (id_server_scheme, id_server, hash_details),
|
|
)
|
|
|
|
# Extract information from hash_details
|
|
supported_lookup_algorithms = hash_details.get("algorithms")
|
|
lookup_pepper = hash_details.get("lookup_pepper")
|
|
if (
|
|
not supported_lookup_algorithms
|
|
or not isinstance(supported_lookup_algorithms, list)
|
|
or not lookup_pepper
|
|
or not isinstance(lookup_pepper, str)
|
|
):
|
|
raise SynapseError(
|
|
400,
|
|
"Invalid hash details received from identity server %s%s: %s"
|
|
% (id_server_scheme, id_server, hash_details),
|
|
)
|
|
|
|
# Check if any of the supported lookup algorithms are present
|
|
if LookupAlgorithm.SHA256 in supported_lookup_algorithms:
|
|
# Perform a hashed lookup
|
|
lookup_algorithm = LookupAlgorithm.SHA256
|
|
|
|
# Hash address, medium and the pepper with sha256
|
|
to_hash = "%s %s %s" % (address, medium, lookup_pepper)
|
|
lookup_value = sha256_and_url_safe_base64(to_hash)
|
|
|
|
elif LookupAlgorithm.NONE in supported_lookup_algorithms:
|
|
# Perform a non-hashed lookup
|
|
lookup_algorithm = LookupAlgorithm.NONE
|
|
|
|
# Combine together plaintext address and medium
|
|
lookup_value = "%s %s" % (address, medium)
|
|
|
|
else:
|
|
logger.warning(
|
|
"None of the provided lookup algorithms of %s are supported: %s",
|
|
id_server,
|
|
supported_lookup_algorithms,
|
|
)
|
|
raise SynapseError(
|
|
400,
|
|
"Provided identity server does not support any v2 lookup "
|
|
"algorithms that this homeserver supports.",
|
|
)
|
|
|
|
# Authenticate with identity server given the access token from the client
|
|
headers = {"Authorization": create_id_access_token_header(id_access_token)}
|
|
|
|
try:
|
|
lookup_results = await self.blacklisting_http_client.post_json_get_json(
|
|
"%s%s/_matrix/identity/v2/lookup" % (id_server_scheme, id_server),
|
|
{
|
|
"addresses": [lookup_value],
|
|
"algorithm": lookup_algorithm,
|
|
"pepper": lookup_pepper,
|
|
},
|
|
headers=headers,
|
|
)
|
|
except RequestTimedOutError:
|
|
raise SynapseError(500, "Timed out contacting identity server")
|
|
except Exception as e:
|
|
logger.warning("Error when performing a v2 3pid lookup: %s", e)
|
|
raise SynapseError(
|
|
500, "Unknown error occurred during identity server lookup"
|
|
)
|
|
|
|
# Check for a mapping from what we looked up to an MXID
|
|
if "mappings" not in lookup_results or not isinstance(
|
|
lookup_results["mappings"], dict
|
|
):
|
|
logger.warning("No results from 3pid lookup")
|
|
return None
|
|
|
|
# Return the MXID if it's available, or None otherwise
|
|
mxid = lookup_results["mappings"].get(lookup_value)
|
|
return mxid
|
|
|
|
async def ask_id_server_for_third_party_invite(
|
|
self,
|
|
requester: Requester,
|
|
id_server: str,
|
|
medium: str,
|
|
address: str,
|
|
room_id: str,
|
|
inviter_user_id: str,
|
|
room_alias: str,
|
|
room_avatar_url: str,
|
|
room_join_rules: str,
|
|
room_name: str,
|
|
inviter_display_name: str,
|
|
inviter_avatar_url: str,
|
|
id_access_token: Optional[str] = None,
|
|
) -> Tuple[str, List[Dict[str, str]], Dict[str, str], str]:
|
|
"""
|
|
Asks an identity server for a third party invite.
|
|
|
|
Args:
|
|
requester
|
|
id_server: hostname + optional port for the identity server.
|
|
medium: The literal string "email".
|
|
address: The third party address being invited.
|
|
room_id: The ID of the room to which the user is invited.
|
|
inviter_user_id: The user ID of the inviter.
|
|
room_alias: An alias for the room, for cosmetic notifications.
|
|
room_avatar_url: The URL of the room's avatar, for cosmetic
|
|
notifications.
|
|
room_join_rules: The join rules of the email (e.g. "public").
|
|
room_name: The m.room.name of the room.
|
|
inviter_display_name: The current display name of the
|
|
inviter.
|
|
inviter_avatar_url: The URL of the inviter's avatar.
|
|
id_access_token (str|None): The access token to authenticate to the identity
|
|
server with
|
|
|
|
Returns:
|
|
A tuple containing:
|
|
token: The token which must be signed to prove authenticity.
|
|
public_keys ([{"public_key": str, "key_validity_url": str}]):
|
|
public_key is a base64-encoded ed25519 public key.
|
|
fallback_public_key: One element from public_keys.
|
|
display_name: A user-friendly name to represent the invited user.
|
|
"""
|
|
invite_config = {
|
|
"medium": medium,
|
|
"address": address,
|
|
"room_id": room_id,
|
|
"room_alias": room_alias,
|
|
"room_avatar_url": room_avatar_url,
|
|
"room_join_rules": room_join_rules,
|
|
"room_name": room_name,
|
|
"sender": inviter_user_id,
|
|
"sender_display_name": inviter_display_name,
|
|
"sender_avatar_url": inviter_avatar_url,
|
|
}
|
|
# If a custom web client location is available, include it in the request.
|
|
if self._web_client_location:
|
|
invite_config["org.matrix.web_client_location"] = self._web_client_location
|
|
|
|
# Add the identity service access token to the JSON body and use the v2
|
|
# Identity Service endpoints if id_access_token is present
|
|
data = None
|
|
base_url = "%s%s/_matrix/identity" % (id_server_scheme, id_server)
|
|
|
|
if id_access_token:
|
|
key_validity_url = "%s%s/_matrix/identity/v2/pubkey/isvalid" % (
|
|
id_server_scheme,
|
|
id_server,
|
|
)
|
|
|
|
# Attempt a v2 lookup
|
|
url = base_url + "/v2/store-invite"
|
|
try:
|
|
data = await self.blacklisting_http_client.post_json_get_json(
|
|
url,
|
|
invite_config,
|
|
{"Authorization": create_id_access_token_header(id_access_token)},
|
|
)
|
|
except RequestTimedOutError:
|
|
raise SynapseError(500, "Timed out contacting identity server")
|
|
except HttpResponseException as e:
|
|
if e.code != 404:
|
|
logger.info("Failed to POST %s with JSON: %s", url, e)
|
|
raise e
|
|
|
|
if data is None:
|
|
key_validity_url = "%s%s/_matrix/identity/api/v1/pubkey/isvalid" % (
|
|
id_server_scheme,
|
|
id_server,
|
|
)
|
|
url = base_url + "/api/v1/store-invite"
|
|
|
|
try:
|
|
data = await self.blacklisting_http_client.post_json_get_json(
|
|
url, invite_config
|
|
)
|
|
except RequestTimedOutError:
|
|
raise SynapseError(500, "Timed out contacting identity server")
|
|
except HttpResponseException as e:
|
|
logger.warning(
|
|
"Error trying to call /store-invite on %s%s: %s",
|
|
id_server_scheme,
|
|
id_server,
|
|
e,
|
|
)
|
|
|
|
if data is None:
|
|
# Some identity servers may only support application/x-www-form-urlencoded
|
|
# types. This is especially true with old instances of Sydent, see
|
|
# https://github.com/matrix-org/sydent/pull/170
|
|
try:
|
|
data = await self.blacklisting_http_client.post_urlencoded_get_json(
|
|
url, invite_config
|
|
)
|
|
except HttpResponseException as e:
|
|
logger.warning(
|
|
"Error calling /store-invite on %s%s with fallback "
|
|
"encoding: %s",
|
|
id_server_scheme,
|
|
id_server,
|
|
e,
|
|
)
|
|
raise e
|
|
|
|
# TODO: Check for success
|
|
token = data["token"]
|
|
public_keys = data.get("public_keys", [])
|
|
if "public_key" in data:
|
|
fallback_public_key = {
|
|
"public_key": data["public_key"],
|
|
"key_validity_url": key_validity_url,
|
|
}
|
|
else:
|
|
fallback_public_key = public_keys[0]
|
|
|
|
if not public_keys:
|
|
public_keys.append(fallback_public_key)
|
|
display_name = data["display_name"]
|
|
return token, public_keys, fallback_public_key, display_name
|
|
|
|
|
|
def create_id_access_token_header(id_access_token: str) -> List[str]:
|
|
"""Create an Authorization header for passing to SimpleHttpClient as the header value
|
|
of an HTTP request.
|
|
|
|
Args:
|
|
id_access_token: An identity server access token.
|
|
|
|
Returns:
|
|
The ascii-encoded bearer token encased in a list.
|
|
"""
|
|
# Prefix with Bearer
|
|
bearer_token = "Bearer %s" % id_access_token
|
|
|
|
# Encode headers to standard ascii
|
|
bearer_token.encode("ascii")
|
|
|
|
# Return as a list as that's how SimpleHttpClient takes header values
|
|
return [bearer_token]
|
|
|
|
|
|
class LookupAlgorithm:
|
|
"""
|
|
Supported hashing algorithms when performing a 3PID lookup.
|
|
|
|
SHA256 - Hashing an (address, medium, pepper) combo with sha256, then url-safe base64
|
|
encoding
|
|
NONE - Not performing any hashing. Simply sending an (address, medium) combo in plaintext
|
|
"""
|
|
|
|
SHA256 = "sha256"
|
|
NONE = "none"
|