diff options
Diffstat (limited to 'synapse/crypto')
| -rw-r--r-- | synapse/crypto/keyring.py | 116 |
1 files changed, 47 insertions, 69 deletions
diff --git a/synapse/crypto/keyring.py b/synapse/crypto/keyring.py index c88afb2986..69310d9035 100644 --- a/synapse/crypto/keyring.py +++ b/synapse/crypto/keyring.py @@ -14,7 +14,6 @@ import abc import logging -import urllib from typing import TYPE_CHECKING, Callable, Dict, Iterable, List, Optional, Tuple import attr @@ -213,7 +212,7 @@ class Keyring: def verify_json_objects_for_server( self, server_and_json: Iterable[Tuple[str, dict, int]] - ) -> List[defer.Deferred]: + ) -> List["defer.Deferred[None]"]: """Bulk verifies signatures of json objects, bulk fetching keys as necessary. @@ -226,10 +225,9 @@ class Keyring: valid. Returns: - List<Deferred[None]>: for each input triplet, a deferred indicating success - or failure to verify each json object's signature for the given - server_name. The deferreds run their callbacks in the sentinel - logcontext. + For each input triplet, a deferred indicating success or failure to + verify each json object's signature for the given server_name. The + deferreds run their callbacks in the sentinel logcontext. """ return [ run_in_background( @@ -814,31 +812,27 @@ class ServerKeyFetcher(BaseV2KeyFetcher): results = {} - async def get_key(key_to_fetch_item: _FetchKeyRequest) -> None: + async def get_keys(key_to_fetch_item: _FetchKeyRequest) -> None: server_name = key_to_fetch_item.server_name - key_ids = key_to_fetch_item.key_ids try: - keys = await self.get_server_verify_key_v2_direct(server_name, key_ids) + keys = await self.get_server_verify_keys_v2_direct(server_name) results[server_name] = keys except KeyLookupError as e: - logger.warning( - "Error looking up keys %s from %s: %s", key_ids, server_name, e - ) + logger.warning("Error looking up keys from %s: %s", server_name, e) except Exception: - logger.exception("Error getting keys %s from %s", key_ids, server_name) + logger.exception("Error getting keys from %s", server_name) - await yieldable_gather_results(get_key, keys_to_fetch) + await yieldable_gather_results(get_keys, keys_to_fetch) return results - async def get_server_verify_key_v2_direct( - self, server_name: str, key_ids: Iterable[str] + async def get_server_verify_keys_v2_direct( + self, server_name: str ) -> Dict[str, FetchKeyResult]: """ Args: - server_name: - key_ids: + server_name: Server to request keys from Returns: Map from key ID to lookup result @@ -846,57 +840,41 @@ class ServerKeyFetcher(BaseV2KeyFetcher): Raises: KeyLookupError if there was a problem making the lookup """ - keys: Dict[str, FetchKeyResult] = {} - - for requested_key_id in key_ids: - # we may have found this key as a side-effect of asking for another. - if requested_key_id in keys: - continue - - time_now_ms = self.clock.time_msec() - try: - response = await self.client.get_json( - destination=server_name, - path="/_matrix/key/v2/server/" - + urllib.parse.quote(requested_key_id), - ignore_backoff=True, - # we only give the remote server 10s to respond. It should be an - # easy request to handle, so if it doesn't reply within 10s, it's - # probably not going to. - # - # Furthermore, when we are acting as a notary server, we cannot - # wait all day for all of the origin servers, as the requesting - # server will otherwise time out before we can respond. - # - # (Note that get_json may make 4 attempts, so this can still take - # almost 45 seconds to fetch the headers, plus up to another 60s to - # read the response). - timeout=10000, - ) - except (NotRetryingDestination, RequestSendFailed) as e: - # these both have str() representations which we can't really improve - # upon - raise KeyLookupError(str(e)) - except HttpResponseException as e: - raise KeyLookupError("Remote server returned an error: %s" % (e,)) - - assert isinstance(response, dict) - if response["server_name"] != server_name: - raise KeyLookupError( - "Expected a response for server %r not %r" - % (server_name, response["server_name"]) - ) - - response_keys = await self.process_v2_response( - from_server=server_name, - response_json=response, - time_added_ms=time_now_ms, + time_now_ms = self.clock.time_msec() + try: + response = await self.client.get_json( + destination=server_name, + path="/_matrix/key/v2/server", + ignore_backoff=True, + # we only give the remote server 10s to respond. It should be an + # easy request to handle, so if it doesn't reply within 10s, it's + # probably not going to. + # + # Furthermore, when we are acting as a notary server, we cannot + # wait all day for all of the origin servers, as the requesting + # server will otherwise time out before we can respond. + # + # (Note that get_json may make 4 attempts, so this can still take + # almost 45 seconds to fetch the headers, plus up to another 60s to + # read the response). + timeout=10000, ) - await self.store.store_server_verify_keys( - server_name, - time_now_ms, - ((server_name, key_id, key) for key_id, key in response_keys.items()), + except (NotRetryingDestination, RequestSendFailed) as e: + # these both have str() representations which we can't really improve + # upon + raise KeyLookupError(str(e)) + except HttpResponseException as e: + raise KeyLookupError("Remote server returned an error: %s" % (e,)) + + assert isinstance(response, dict) + if response["server_name"] != server_name: + raise KeyLookupError( + "Expected a response for server %r not %r" + % (server_name, response["server_name"]) ) - keys.update(response_keys) - return keys + return await self.process_v2_response( + from_server=server_name, + response_json=response, + time_added_ms=time_now_ms, + ) |