261 lines
8.9 KiB
Python
261 lines
8.9 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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from canonicaljson import json
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from twisted.internet import defer
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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 ._base import BaseHandler
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logger = logging.getLogger(__name__)
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class IdentityHandler(BaseHandler):
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def __init__(self, hs):
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super(IdentityHandler, self).__init__(hs)
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self.http_client = hs.get_simple_http_client()
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self.federation_http_client = hs.get_http_client()
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self.trusted_id_servers = set(hs.config.trusted_third_party_id_servers)
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self.trust_any_id_server_just_for_testing_do_not_use = (
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hs.config.use_insecure_ssl_client_just_for_testing_do_not_use
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)
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def _should_trust_id_server(self, id_server):
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if id_server not in self.trusted_id_servers:
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if self.trust_any_id_server_just_for_testing_do_not_use:
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logger.warn(
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"Trusting untrustworthy ID server %r even though it isn't"
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" in the trusted id list for testing because"
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" 'use_insecure_ssl_client_just_for_testing_do_not_use'"
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" is set in the config",
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id_server,
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)
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else:
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return False
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return True
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@defer.inlineCallbacks
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def threepid_from_creds(self, creds):
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if 'id_server' in creds:
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id_server = creds['id_server']
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elif 'idServer' in creds:
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id_server = creds['idServer']
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else:
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raise SynapseError(400, "No id_server in creds")
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if 'client_secret' in creds:
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client_secret = creds['client_secret']
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elif 'clientSecret' in creds:
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client_secret = creds['clientSecret']
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else:
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raise SynapseError(400, "No client_secret in creds")
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if not self._should_trust_id_server(id_server):
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logger.warn(
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'%s is not a trusted ID server: rejecting 3pid ' +
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'credentials', id_server
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)
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defer.returnValue(None)
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try:
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data = yield self.http_client.get_json(
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"https://%s%s" % (
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id_server,
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"/_matrix/identity/api/v1/3pid/getValidated3pid"
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),
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{'sid': creds['sid'], 'client_secret': client_secret}
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)
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except HttpResponseException as e:
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logger.info("getValidated3pid failed with Matrix error: %r", e)
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raise e.to_synapse_error()
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if 'medium' in data:
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defer.returnValue(data)
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defer.returnValue(None)
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@defer.inlineCallbacks
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def bind_threepid(self, creds, mxid):
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logger.debug("binding threepid %r to %s", creds, mxid)
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data = None
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if 'id_server' in creds:
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id_server = creds['id_server']
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elif 'idServer' in creds:
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id_server = creds['idServer']
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else:
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raise SynapseError(400, "No id_server in creds")
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if 'client_secret' in creds:
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client_secret = creds['client_secret']
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elif 'clientSecret' in creds:
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client_secret = creds['clientSecret']
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else:
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raise SynapseError(400, "No client_secret in creds")
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try:
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data = yield self.http_client.post_urlencoded_get_json(
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"https://%s%s" % (
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id_server, "/_matrix/identity/api/v1/3pid/bind"
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),
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{
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'sid': creds['sid'],
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'client_secret': client_secret,
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'mxid': mxid,
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}
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)
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logger.debug("bound threepid %r to %s", creds, mxid)
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except CodeMessageException as e:
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data = json.loads(e.msg) # XXX WAT?
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defer.returnValue(data)
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@defer.inlineCallbacks
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def try_unbind_threepid(self, mxid, threepid):
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"""Removes a binding from an identity server
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Args:
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mxid (str): Matrix user ID of binding to be removed
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threepid (dict): Dict with medium & address of binding to be removed
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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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Deferred[bool]: 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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logger.debug("unbinding threepid %r from %s", threepid, mxid)
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if not self.trusted_id_servers:
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logger.warn("Can't unbind threepid: no trusted ID servers set in config")
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defer.returnValue(False)
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# We don't track what ID server we added 3pids on (perhaps we ought to)
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# but we assume that any of the servers in the trusted list are in the
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# same ID server federation, so we can pick any one of them to send the
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# deletion request to.
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id_server = next(iter(self.trusted_id_servers))
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url = "https://%s/_matrix/identity/api/v1/3pid/unbind" % (id_server,)
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content = {
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"mxid": mxid,
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"threepid": threepid,
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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='POST',
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url_bytes='/_matrix/identity/api/v1/3pid/unbind'.encode('ascii'),
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content=content,
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destination_is=id_server,
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)
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headers = {
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b"Authorization": auth_headers,
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}
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try:
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yield self.http_client.post_json_get_json(
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url,
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content,
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headers,
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)
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except HttpResponseException as e:
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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.warn("Received %d response while unbinding threepid", e.code)
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defer.returnValue(False)
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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(502, "Failed to contact identity server")
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defer.returnValue(True)
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@defer.inlineCallbacks
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def requestEmailToken(self, id_server, email, client_secret, send_attempt, **kwargs):
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if not self._should_trust_id_server(id_server):
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raise SynapseError(
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400, "Untrusted ID server '%s'" % id_server,
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Codes.SERVER_NOT_TRUSTED
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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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params.update(kwargs)
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try:
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data = yield self.http_client.post_json_get_json(
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"https://%s%s" % (
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id_server,
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"/_matrix/identity/api/v1/validate/email/requestToken"
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),
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params
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)
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defer.returnValue(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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@defer.inlineCallbacks
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def requestMsisdnToken(
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self, id_server, country, phone_number,
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client_secret, send_attempt, **kwargs
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):
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if not self._should_trust_id_server(id_server):
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raise SynapseError(
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400, "Untrusted ID server '%s'" % id_server,
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Codes.SERVER_NOT_TRUSTED
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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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params.update(kwargs)
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try:
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data = yield self.http_client.post_json_get_json(
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"https://%s%s" % (
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id_server,
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"/_matrix/identity/api/v1/validate/msisdn/requestToken"
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),
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params
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)
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defer.returnValue(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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