diff options
Diffstat (limited to 'synapse/crypto')
| -rw-r--r-- | synapse/crypto/keyclient.py | 10 | ||||
| -rw-r--r-- | synapse/crypto/keyring.py | 110 |
2 files changed, 13 insertions, 107 deletions
diff --git a/synapse/crypto/keyclient.py b/synapse/crypto/keyclient.py index 57d4665e84..d40e4b8591 100644 --- a/synapse/crypto/keyclient.py +++ b/synapse/crypto/keyclient.py @@ -15,6 +15,8 @@ import logging +from six.moves import urllib + from canonicaljson import json from twisted.internet import defer, reactor @@ -28,15 +30,15 @@ from synapse.util import logcontext logger = logging.getLogger(__name__) -KEY_API_V1 = b"/_matrix/key/v1/" +KEY_API_V2 = "/_matrix/key/v2/server/%s" @defer.inlineCallbacks -def fetch_server_key(server_name, tls_client_options_factory, path=KEY_API_V1): +def fetch_server_key(server_name, tls_client_options_factory, key_id): """Fetch the keys for a remote server.""" factory = SynapseKeyClientFactory() - factory.path = path + factory.path = KEY_API_V2 % (urllib.parse.quote(key_id), ) factory.host = server_name endpoint = matrix_federation_endpoint( reactor, server_name, tls_client_options_factory, timeout=30 @@ -55,7 +57,7 @@ def fetch_server_key(server_name, tls_client_options_factory, path=KEY_API_V1): raise IOError("Cannot get key for %r" % server_name) except (ConnectError, DomainError) as e: logger.warn("Error getting key for %r: %s", server_name, e) - except Exception as e: + except Exception: logger.exception("Error getting key for %r", server_name) raise IOError("Cannot get key for %r" % server_name) diff --git a/synapse/crypto/keyring.py b/synapse/crypto/keyring.py index d89f94c219..515ebbc148 100644 --- a/synapse/crypto/keyring.py +++ b/synapse/crypto/keyring.py @@ -1,6 +1,6 @@ # -*- coding: utf-8 -*- # Copyright 2014-2016 OpenMarket Ltd -# Copyright 2017 New Vector Ltd. +# Copyright 2017, 2018 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. @@ -18,8 +18,6 @@ import hashlib import logging from collections import namedtuple -from six.moves import urllib - from signedjson.key import ( decode_verify_key_bytes, encode_verify_key_base64, @@ -395,32 +393,13 @@ class Keyring(object): @defer.inlineCallbacks def get_keys_from_server(self, server_name_and_key_ids): - @defer.inlineCallbacks - def get_key(server_name, key_ids): - keys = None - try: - keys = yield self.get_server_verify_key_v2_direct( - server_name, key_ids - ) - except Exception as e: - logger.info( - "Unable to get key %r for %r directly: %s %s", - key_ids, server_name, - type(e).__name__, str(e), - ) - - if not keys: - keys = yield self.get_server_verify_key_v1_direct( - server_name, key_ids - ) - - keys = {server_name: keys} - - defer.returnValue(keys) - results = yield logcontext.make_deferred_yieldable(defer.gatherResults( [ - run_in_background(get_key, server_name, key_ids) + run_in_background( + self.get_server_verify_key_v2_direct, + server_name, + key_ids, + ) for server_name, key_ids in server_name_and_key_ids ], consumeErrors=True, @@ -525,10 +504,7 @@ class Keyring(object): continue (response, tls_certificate) = yield fetch_server_key( - server_name, self.hs.tls_client_options_factory, - path=("/_matrix/key/v2/server/%s" % ( - urllib.parse.quote(requested_key_id), - )).encode("ascii"), + server_name, self.hs.tls_client_options_factory, requested_key_id ) if (u"signatures" not in response @@ -657,78 +633,6 @@ class Keyring(object): defer.returnValue(results) - @defer.inlineCallbacks - def get_server_verify_key_v1_direct(self, server_name, key_ids): - """Finds a verification key for the server with one of the key ids. - Args: - server_name (str): The name of the server to fetch a key for. - keys_ids (list of str): The key_ids to check for. - """ - - # Try to fetch the key from the remote server. - - (response, tls_certificate) = yield fetch_server_key( - server_name, self.hs.tls_client_options_factory - ) - - # Check the response. - - x509_certificate_bytes = crypto.dump_certificate( - crypto.FILETYPE_ASN1, tls_certificate - ) - - if ("signatures" not in response - or server_name not in response["signatures"]): - raise KeyLookupError("Key response not signed by remote server") - - if "tls_certificate" not in response: - raise KeyLookupError("Key response missing TLS certificate") - - tls_certificate_b64 = response["tls_certificate"] - - if encode_base64(x509_certificate_bytes) != tls_certificate_b64: - raise KeyLookupError("TLS certificate doesn't match") - - # Cache the result in the datastore. - - time_now_ms = self.clock.time_msec() - - verify_keys = {} - for key_id, key_base64 in response["verify_keys"].items(): - if is_signing_algorithm_supported(key_id): - key_bytes = decode_base64(key_base64) - verify_key = decode_verify_key_bytes(key_id, key_bytes) - verify_key.time_added = time_now_ms - verify_keys[key_id] = verify_key - - for key_id in response["signatures"][server_name]: - if key_id not in response["verify_keys"]: - raise KeyLookupError( - "Key response must include verification keys for all" - " signatures" - ) - if key_id in verify_keys: - verify_signed_json( - response, - server_name, - verify_keys[key_id] - ) - - yield self.store.store_server_certificate( - server_name, - server_name, - time_now_ms, - tls_certificate, - ) - - yield self.store_keys( - server_name=server_name, - from_server=server_name, - verify_keys=verify_keys, - ) - - defer.returnValue(verify_keys) - def store_keys(self, server_name, from_server, verify_keys): """Store a collection of verify keys for a given server Args: |