diff --git a/synapse/handlers/identity.py b/synapse/handlers/identity.py
index 6d42a1aed8..25e7961144 100644
--- a/synapse/handlers/identity.py
+++ b/synapse/handlers/identity.py
@@ -1,7 +1,7 @@
# -*- coding: utf-8 -*-
# Copyright 2015, 2016 OpenMarket Ltd
# Copyright 2017 Vector Creations Ltd
-# Copyright 2018 New Vector Ltd
+# Copyright 2018, 2019 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.
@@ -21,14 +21,19 @@ import logging
import urllib
from canonicaljson import json
+from signedjson.key import decode_verify_key_bytes
+from signedjson.sign import verify_signed_json
+from unpaddedbase64 import decode_base64
from twisted.internet import defer
from twisted.internet.error import TimeoutError
from synapse.api.errors import (
+ AuthError,
CodeMessageException,
Codes,
HttpResponseException,
+ ProxiedRequestError,
SynapseError,
)
from synapse.config.emailconfig import ThreepidBehaviour
@@ -44,14 +49,21 @@ class IdentityHandler(BaseHandler):
def __init__(self, hs):
super(IdentityHandler, self).__init__(hs)
- self.http_client = SimpleHttpClient(hs)
+ self.hs = hs
+ self.http_client = hs.get_simple_http_client()
# We create a blacklisting instance of SimpleHttpClient for contacting identity
# servers specified by clients
self.blacklisting_http_client = SimpleHttpClient(
hs, ip_blacklist=hs.config.federation_ip_range_blacklist
)
self.federation_http_client = hs.get_http_client()
- self.hs = hs
+
+ self.trusted_id_servers = set(hs.config.trusted_third_party_id_servers)
+ self.trust_any_id_server_just_for_testing_do_not_use = (
+ hs.config.use_insecure_ssl_client_just_for_testing_do_not_use
+ )
+ self.rewrite_identity_server_urls = hs.config.rewrite_identity_server_urls
+ self._enable_lookup = hs.config.enable_3pid_lookup
@defer.inlineCallbacks
def threepid_from_creds(self, id_server, creds):
@@ -85,7 +97,15 @@ class IdentityHandler(BaseHandler):
query_params = {"sid": session_id, "client_secret": client_secret}
- url = id_server + "/_matrix/identity/api/v1/3pid/getValidated3pid"
+ # if we have a rewrite rule set for the identity server,
+ # apply it now.
+ if id_server in self.rewrite_identity_server_urls:
+ id_server = self.rewrite_identity_server_urls[id_server]
+
+ url = "https://%s%s" % (
+ id_server,
+ "/_matrix/identity/api/v1/3pid/getValidated3pid",
+ )
try:
data = yield self.http_client.get_json(url, query_params)
@@ -140,14 +160,24 @@ class IdentityHandler(BaseHandler):
if id_access_token is None:
use_v2 = False
+ # if we have a rewrite rule set for the identity server,
+ # apply it now, but only for sending the request (not
+ # storing in the database).
+ if id_server in self.rewrite_identity_server_urls:
+ id_server_host = self.rewrite_identity_server_urls[id_server]
+ else:
+ id_server_host = id_server
+
# Decide which API endpoint URLs to use
headers = {}
bind_data = {"sid": sid, "client_secret": client_secret, "mxid": mxid}
if use_v2:
- bind_url = "https://%s/_matrix/identity/v2/3pid/bind" % (id_server,)
- headers["Authorization"] = create_id_access_token_header(id_access_token)
+ bind_url = "https://%s/_matrix/identity/v2/3pid/bind" % (id_server_host,)
+ headers["Authorization"] = create_id_access_token_header(
+ id_access_token
+ )
else:
- bind_url = "https://%s/_matrix/identity/api/v1/3pid/bind" % (id_server,)
+ bind_url = "https://%s/_matrix/identity/api/v1/3pid/bind" % (id_server_host,)
try:
# Use the blacklisting http client as this call is only to identity servers
@@ -254,6 +284,16 @@ class IdentityHandler(BaseHandler):
)
headers = {b"Authorization": auth_headers}
+ # if we have a rewrite rule set for the identity server,
+ # apply it now.
+ #
+ # Note that destination_is has to be the real id_server, not
+ # the server we connect to.
+ if id_server in self.rewrite_identity_server_urls:
+ id_server = self.rewrite_identity_server_urls[id_server]
+
+ url = "https://%s/_matrix/identity/api/v1/3pid/unbind" % (id_server,)
+
try:
# Use the blacklisting http client as this call is only to identity servers
# provided by a client
@@ -391,6 +431,12 @@ class IdentityHandler(BaseHandler):
"client_secret": client_secret,
"send_attempt": send_attempt,
}
+
+ # if we have a rewrite rule set for the identity server,
+ # apply it now.
+ if id_server in self.rewrite_identity_server_urls:
+ id_server = self.rewrite_identity_server_urls[id_server]
+
if next_link:
params["next_link"] = next_link
@@ -457,6 +503,10 @@ class IdentityHandler(BaseHandler):
"details and update your config file."
)
+ # if we have a rewrite rule set for the identity server,
+ # apply it now.
+ if id_server in self.rewrite_identity_server_urls:
+ id_server = self.rewrite_identity_server_urls[id_server]
try:
data = yield self.http_client.post_json_get_json(
id_server + "/_matrix/identity/api/v1/validate/msisdn/requestToken",
@@ -557,6 +607,117 @@ class IdentityHandler(BaseHandler):
logger.warning("Error contacting msisdn account_threepid_delegate: %s", e)
raise SynapseError(400, "Error contacting the identity server")
+ # TODO: The following methods are used for proxying IS requests using
+ # the CS API. They should be consolidated with those in RoomMemberHandler
+ # https://github.com/matrix-org/synapse-dinsic/issues/25
+
+ @defer.inlineCallbacks
+ def lookup_3pid(self, id_server, medium, address):
+ """Looks up a 3pid in the passed identity server.
+
+ Args:
+ id_server (str): The server name (including port, if required)
+ of the identity server to use.
+ medium (str): The type of the third party identifier (e.g. "email").
+ address (str): The third party identifier (e.g. "foo@example.com").
+
+ Returns:
+ Deferred[dict]: The result of the lookup. See
+ https://matrix.org/docs/spec/identity_service/r0.1.0.html#association-lookup
+ for details
+ """
+ if not self._enable_lookup:
+ raise AuthError(
+ 403, "Looking up third-party identifiers is denied from this server"
+ )
+
+ target = self.rewrite_identity_server_urls.get(id_server, id_server)
+
+ try:
+ data = yield self.http_client.get_json(
+ "https://%s/_matrix/identity/api/v1/lookup" % (target,),
+ {"medium": medium, "address": address},
+ )
+
+ if "mxid" in data:
+ if "signatures" not in data:
+ raise AuthError(401, "No signatures on 3pid binding")
+ yield self._verify_any_signature(data, id_server)
+
+ except HttpResponseException as e:
+ logger.info("Proxied lookup failed: %r", e)
+ raise e.to_synapse_error()
+ except IOError as e:
+ logger.info("Failed to contact %r: %s", id_server, e)
+ raise ProxiedRequestError(503, "Failed to contact identity server")
+
+ defer.returnValue(data)
+
+ @defer.inlineCallbacks
+ def bulk_lookup_3pid(self, id_server, threepids):
+ """Looks up given 3pids in the passed identity server.
+
+ Args:
+ id_server (str): The server name (including port, if required)
+ of the identity server to use.
+ threepids ([[str, str]]): The third party identifiers to lookup, as
+ a list of 2-string sized lists ([medium, address]).
+
+ Returns:
+ Deferred[dict]: The result of the lookup. See
+ https://matrix.org/docs/spec/identity_service/r0.1.0.html#association-lookup
+ for details
+ """
+ if not self._enable_lookup:
+ raise AuthError(
+ 403, "Looking up third-party identifiers is denied from this server"
+ )
+
+ target = self.rewrite_identity_server_urls.get(id_server, id_server)
+
+ try:
+ data = yield self.http_client.post_json_get_json(
+ "https://%s/_matrix/identity/api/v1/bulk_lookup" % (target,),
+ {"threepids": threepids},
+ )
+
+ except HttpResponseException as e:
+ logger.info("Proxied lookup failed: %r", e)
+ raise e.to_synapse_error()
+ except IOError as e:
+ logger.info("Failed to contact %r: %s", id_server, e)
+ raise ProxiedRequestError(503, "Failed to contact identity server")
+
+ defer.returnValue(data)
+
+ @defer.inlineCallbacks
+ def _verify_any_signature(self, data, server_hostname):
+ if server_hostname not in data["signatures"]:
+ raise AuthError(401, "No signature from server %s" % (server_hostname,))
+
+ for key_name, signature in data["signatures"][server_hostname].items():
+ target = self.rewrite_identity_server_urls.get(
+ server_hostname, server_hostname
+ )
+
+ key_data = yield self.http_client.get_json(
+ "https://%s/_matrix/identity/api/v1/pubkey/%s" % (target, key_name)
+ )
+ if "public_key" not in key_data:
+ raise AuthError(
+ 401, "No public key named %s from %s" % (key_name, server_hostname)
+ )
+ verify_signed_json(
+ data,
+ server_hostname,
+ decode_verify_key_bytes(
+ key_name, decode_base64(key_data["public_key"])
+ ),
+ )
+ return
+
+ raise AuthError(401, "No signature from server %s" % (server_hostname,))
+
def create_id_access_token_header(id_access_token):
"""Create an Authorization header for passing to SimpleHttpClient as the header value
|
