diff options
Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/crypto/event_signing.py | 20 | ||||
| -rw-r--r-- | synapse/events/builder.py | 52 | ||||
| -rw-r--r-- | synapse/federation/federation_client.py | 4 |
3 files changed, 39 insertions, 37 deletions
diff --git a/synapse/crypto/event_signing.py b/synapse/crypto/event_signing.py index e65bd61d97..1f2bccf700 100644 --- a/synapse/crypto/event_signing.py +++ b/synapse/crypto/event_signing.py @@ -20,10 +20,13 @@ import logging from canonicaljson import encode_canonical_json from signedjson.sign import sign_json +from signedjson.types import SigningKey from unpaddedbase64 import decode_base64, encode_base64 from synapse.api.errors import Codes, SynapseError +from synapse.api.room_versions import RoomVersion from synapse.events.utils import prune_event, prune_event_dict +from synapse.types import JsonDict logger = logging.getLogger(__name__) @@ -137,20 +140,23 @@ def compute_event_signature(event_dict, signature_name, signing_key): def add_hashes_and_signatures( - event_dict, signature_name, signing_key, hash_algorithm=hashlib.sha256 + room_version: RoomVersion, + event_dict: JsonDict, + signature_name: str, + signing_key: SigningKey, ): """Add content hash and sign the event Args: - event_dict (dict): The event to add hashes to and sign - signature_name (str): The name of the entity signing the event + room_version: the version of the room this event is in + + event_dict: The event to add hashes to and sign + signature_name: The name of the entity signing the event (typically the server's hostname). - signing_key (syutil.crypto.SigningKey): The key to sign with - hash_algorithm: A hasher from `hashlib`, e.g. hashlib.sha256, to use - to hash the event + signing_key: The key to sign with """ - name, digest = compute_content_hash(event_dict, hash_algorithm=hash_algorithm) + name, digest = compute_content_hash(event_dict, hash_algorithm=hashlib.sha256) event_dict.setdefault("hashes", {})[name] = encode_base64(digest) diff --git a/synapse/events/builder.py b/synapse/events/builder.py index 3997751337..8d63ad6dc3 100644 --- a/synapse/events/builder.py +++ b/synapse/events/builder.py @@ -12,8 +12,10 @@ # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. +from typing import Optional import attr +from nacl.signing import SigningKey from twisted.internet import defer @@ -23,13 +25,18 @@ from synapse.api.room_versions import ( KNOWN_EVENT_FORMAT_VERSIONS, KNOWN_ROOM_VERSIONS, EventFormatVersions, + RoomVersion, ) from synapse.crypto.event_signing import add_hashes_and_signatures -from synapse.types import EventID +from synapse.events import ( + EventBase, + _EventInternalMetadata, + event_type_from_format_version, +) +from synapse.types import EventID, JsonDict +from synapse.util import Clock from synapse.util.stringutils import random_string -from . import _EventInternalMetadata, event_type_from_format_version - @attr.s(slots=True, cmp=False, frozen=True) class EventBuilder(object): @@ -40,7 +47,7 @@ class EventBuilder(object): content/unsigned/internal_metadata fields are still mutable) Attributes: - format_version (int): Event format version + room_version: Version of the target room room_id (str) type (str) sender (str) @@ -63,7 +70,7 @@ class EventBuilder(object): _hostname = attr.ib() _signing_key = attr.ib() - format_version = attr.ib() + room_version = attr.ib(type=RoomVersion) room_id = attr.ib() type = attr.ib() @@ -108,7 +115,8 @@ class EventBuilder(object): ) auth_ids = yield self._auth.compute_auth_events(self, state_ids) - if self.format_version == EventFormatVersions.V1: + format_version = self.room_version.event_format + if format_version == EventFormatVersions.V1: auth_events = yield self._store.add_event_hashes(auth_ids) prev_events = yield self._store.add_event_hashes(prev_event_ids) else: @@ -148,7 +156,7 @@ class EventBuilder(object): clock=self._clock, hostname=self._hostname, signing_key=self._signing_key, - format_version=self.format_version, + room_version=self.room_version, event_dict=event_dict, internal_metadata_dict=self.internal_metadata.get_dict(), ) @@ -201,7 +209,7 @@ class EventBuilderFactory(object): clock=self.clock, hostname=self.hostname, signing_key=self.signing_key, - format_version=room_version.event_format, + room_version=room_version, type=key_values["type"], state_key=key_values.get("state_key"), room_id=key_values["room_id"], @@ -214,29 +222,19 @@ class EventBuilderFactory(object): def create_local_event_from_event_dict( - clock, - hostname, - signing_key, - format_version, - event_dict, - internal_metadata_dict=None, -): + clock: Clock, + hostname: str, + signing_key: SigningKey, + room_version: RoomVersion, + event_dict: JsonDict, + internal_metadata_dict: Optional[JsonDict] = None, +) -> EventBase: """Takes a fully formed event dict, ensuring that fields like `origin` and `origin_server_ts` have correct values for a locally produced event, then signs and hashes it. - - Args: - clock (Clock) - hostname (str) - signing_key - format_version (int) - event_dict (dict) - internal_metadata_dict (dict|None) - - Returns: - FrozenEvent """ + format_version = room_version.event_format if format_version not in KNOWN_EVENT_FORMAT_VERSIONS: raise Exception("No event format defined for version %r" % (format_version,)) @@ -257,7 +255,7 @@ def create_local_event_from_event_dict( event_dict.setdefault("signatures", {}) - add_hashes_and_signatures(event_dict, hostname, signing_key) + add_hashes_and_signatures(room_version, event_dict, hostname, signing_key) return event_type_from_format_version(format_version)( event_dict, internal_metadata_dict=internal_metadata_dict ) diff --git a/synapse/federation/federation_client.py b/synapse/federation/federation_client.py index 4ac3d81cba..f99d17a7de 100644 --- a/synapse/federation/federation_client.py +++ b/synapse/federation/federation_client.py @@ -470,8 +470,6 @@ class FederationClient(FederationBase): if not room_version: raise UnsupportedRoomVersionError() - event_format = room_version_to_event_format(room_version_id) - pdu_dict = ret.get("event", None) if not isinstance(pdu_dict, dict): raise InvalidResponseError("Bad 'event' field in response") @@ -490,7 +488,7 @@ class FederationClient(FederationBase): self._clock, self.hostname, self.signing_key, - format_version=event_format, + room_version=room_version, event_dict=pdu_dict, ) |