mirror of
https://mau.dev/maunium/synapse.git
synced 2024-08-26 12:16:12 +00:00
103 lines
3.2 KiB
Python
103 lines
3.2 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2014-2016 OpenMarket Ltd
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# 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.
|
|
|
|
import six
|
|
|
|
from unpaddedbase64 import encode_base64
|
|
|
|
from twisted.internet import defer
|
|
|
|
from synapse.crypto.event_signing import compute_event_reference_hash
|
|
from synapse.util.caches.descriptors import cached, cachedList
|
|
|
|
from ._base import SQLBaseStore
|
|
|
|
# py2 sqlite has buffer hardcoded as only binary type, so we must use it,
|
|
# despite being deprecated and removed in favor of memoryview
|
|
if six.PY2:
|
|
db_binary_type = six.moves.builtins.buffer
|
|
else:
|
|
db_binary_type = memoryview
|
|
|
|
|
|
class SignatureWorkerStore(SQLBaseStore):
|
|
@cached()
|
|
def get_event_reference_hash(self, event_id):
|
|
# This is a dummy function to allow get_event_reference_hashes
|
|
# to use its cache
|
|
raise NotImplementedError()
|
|
|
|
@cachedList(
|
|
cached_method_name="get_event_reference_hash", list_name="event_ids", num_args=1
|
|
)
|
|
def get_event_reference_hashes(self, event_ids):
|
|
def f(txn):
|
|
return {
|
|
event_id: self._get_event_reference_hashes_txn(txn, event_id)
|
|
for event_id in event_ids
|
|
}
|
|
|
|
return self.runInteraction("get_event_reference_hashes", f)
|
|
|
|
@defer.inlineCallbacks
|
|
def add_event_hashes(self, event_ids):
|
|
hashes = yield self.get_event_reference_hashes(event_ids)
|
|
hashes = {
|
|
e_id: {k: encode_base64(v) for k, v in h.items() if k == "sha256"}
|
|
for e_id, h in hashes.items()
|
|
}
|
|
|
|
defer.returnValue(list(hashes.items()))
|
|
|
|
def _get_event_reference_hashes_txn(self, txn, event_id):
|
|
"""Get all the hashes for a given PDU.
|
|
Args:
|
|
txn (cursor):
|
|
event_id (str): Id for the Event.
|
|
Returns:
|
|
A dict[unicode, bytes] of algorithm -> hash.
|
|
"""
|
|
query = (
|
|
"SELECT algorithm, hash"
|
|
" FROM event_reference_hashes"
|
|
" WHERE event_id = ?"
|
|
)
|
|
txn.execute(query, (event_id,))
|
|
return {k: v for k, v in txn}
|
|
|
|
|
|
class SignatureStore(SignatureWorkerStore):
|
|
"""Persistence for event signatures and hashes"""
|
|
|
|
def _store_event_reference_hashes_txn(self, txn, events):
|
|
"""Store a hash for a PDU
|
|
Args:
|
|
txn (cursor):
|
|
events (list): list of Events.
|
|
"""
|
|
|
|
vals = []
|
|
for event in events:
|
|
ref_alg, ref_hash_bytes = compute_event_reference_hash(event)
|
|
vals.append(
|
|
{
|
|
"event_id": event.event_id,
|
|
"algorithm": ref_alg,
|
|
"hash": db_binary_type(ref_hash_bytes),
|
|
}
|
|
)
|
|
|
|
self._simple_insert_many_txn(txn, table="event_reference_hashes", values=vals)
|