mirror of
https://mau.dev/maunium/synapse.git
synced 2024-06-25 22:18:18 +02:00
282 lines
10 KiB
Python
282 lines
10 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2015, 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.
|
|
from six import iteritems
|
|
|
|
from canonicaljson import encode_canonical_json
|
|
|
|
from twisted.internet import defer
|
|
|
|
from synapse.util.caches.descriptors import cached
|
|
|
|
from ._base import SQLBaseStore, db_to_json
|
|
|
|
|
|
class EndToEndKeyWorkerStore(SQLBaseStore):
|
|
@defer.inlineCallbacks
|
|
def get_e2e_device_keys(
|
|
self, query_list, include_all_devices=False, include_deleted_devices=False
|
|
):
|
|
"""Fetch a list of device keys.
|
|
Args:
|
|
query_list(list): List of pairs of user_ids and device_ids.
|
|
include_all_devices (bool): whether to include entries for devices
|
|
that don't have device keys
|
|
include_deleted_devices (bool): whether to include null entries for
|
|
devices which no longer exist (but were in the query_list).
|
|
This option only takes effect if include_all_devices is true.
|
|
Returns:
|
|
Dict mapping from user-id to dict mapping from device_id to
|
|
dict containing "key_json", "device_display_name".
|
|
"""
|
|
if not query_list:
|
|
return {}
|
|
|
|
results = yield self.runInteraction(
|
|
"get_e2e_device_keys",
|
|
self._get_e2e_device_keys_txn,
|
|
query_list,
|
|
include_all_devices,
|
|
include_deleted_devices,
|
|
)
|
|
|
|
for user_id, device_keys in iteritems(results):
|
|
for device_id, device_info in iteritems(device_keys):
|
|
device_info["keys"] = db_to_json(device_info.pop("key_json"))
|
|
|
|
return results
|
|
|
|
def _get_e2e_device_keys_txn(
|
|
self, txn, query_list, include_all_devices=False, include_deleted_devices=False
|
|
):
|
|
query_clauses = []
|
|
query_params = []
|
|
|
|
if include_all_devices is False:
|
|
include_deleted_devices = False
|
|
|
|
if include_deleted_devices:
|
|
deleted_devices = set(query_list)
|
|
|
|
for (user_id, device_id) in query_list:
|
|
query_clause = "user_id = ?"
|
|
query_params.append(user_id)
|
|
|
|
if device_id is not None:
|
|
query_clause += " AND device_id = ?"
|
|
query_params.append(device_id)
|
|
|
|
query_clauses.append(query_clause)
|
|
|
|
sql = (
|
|
"SELECT user_id, device_id, "
|
|
" d.display_name AS device_display_name, "
|
|
" k.key_json"
|
|
" FROM devices d"
|
|
" %s JOIN e2e_device_keys_json k USING (user_id, device_id)"
|
|
" WHERE %s"
|
|
) % (
|
|
"LEFT" if include_all_devices else "INNER",
|
|
" OR ".join("(" + q + ")" for q in query_clauses),
|
|
)
|
|
|
|
txn.execute(sql, query_params)
|
|
rows = self.cursor_to_dict(txn)
|
|
|
|
result = {}
|
|
for row in rows:
|
|
if include_deleted_devices:
|
|
deleted_devices.remove((row["user_id"], row["device_id"]))
|
|
result.setdefault(row["user_id"], {})[row["device_id"]] = row
|
|
|
|
if include_deleted_devices:
|
|
for user_id, device_id in deleted_devices:
|
|
result.setdefault(user_id, {})[device_id] = None
|
|
|
|
return result
|
|
|
|
@defer.inlineCallbacks
|
|
def get_e2e_one_time_keys(self, user_id, device_id, key_ids):
|
|
"""Retrieve a number of one-time keys for a user
|
|
|
|
Args:
|
|
user_id(str): id of user to get keys for
|
|
device_id(str): id of device to get keys for
|
|
key_ids(list[str]): list of key ids (excluding algorithm) to
|
|
retrieve
|
|
|
|
Returns:
|
|
deferred resolving to Dict[(str, str), str]: map from (algorithm,
|
|
key_id) to json string for key
|
|
"""
|
|
|
|
rows = yield self._simple_select_many_batch(
|
|
table="e2e_one_time_keys_json",
|
|
column="key_id",
|
|
iterable=key_ids,
|
|
retcols=("algorithm", "key_id", "key_json"),
|
|
keyvalues={"user_id": user_id, "device_id": device_id},
|
|
desc="add_e2e_one_time_keys_check",
|
|
)
|
|
|
|
return {(row["algorithm"], row["key_id"]): row["key_json"] for row in rows}
|
|
|
|
@defer.inlineCallbacks
|
|
def add_e2e_one_time_keys(self, user_id, device_id, time_now, new_keys):
|
|
"""Insert some new one time keys for a device. Errors if any of the
|
|
keys already exist.
|
|
|
|
Args:
|
|
user_id(str): id of user to get keys for
|
|
device_id(str): id of device to get keys for
|
|
time_now(long): insertion time to record (ms since epoch)
|
|
new_keys(iterable[(str, str, str)]: keys to add - each a tuple of
|
|
(algorithm, key_id, key json)
|
|
"""
|
|
|
|
def _add_e2e_one_time_keys(txn):
|
|
# We are protected from race between lookup and insertion due to
|
|
# a unique constraint. If there is a race of two calls to
|
|
# `add_e2e_one_time_keys` then they'll conflict and we will only
|
|
# insert one set.
|
|
self._simple_insert_many_txn(
|
|
txn,
|
|
table="e2e_one_time_keys_json",
|
|
values=[
|
|
{
|
|
"user_id": user_id,
|
|
"device_id": device_id,
|
|
"algorithm": algorithm,
|
|
"key_id": key_id,
|
|
"ts_added_ms": time_now,
|
|
"key_json": json_bytes,
|
|
}
|
|
for algorithm, key_id, json_bytes in new_keys
|
|
],
|
|
)
|
|
self._invalidate_cache_and_stream(
|
|
txn, self.count_e2e_one_time_keys, (user_id, device_id)
|
|
)
|
|
|
|
yield self.runInteraction(
|
|
"add_e2e_one_time_keys_insert", _add_e2e_one_time_keys
|
|
)
|
|
|
|
@cached(max_entries=10000)
|
|
def count_e2e_one_time_keys(self, user_id, device_id):
|
|
""" Count the number of one time keys the server has for a device
|
|
Returns:
|
|
Dict mapping from algorithm to number of keys for that algorithm.
|
|
"""
|
|
|
|
def _count_e2e_one_time_keys(txn):
|
|
sql = (
|
|
"SELECT algorithm, COUNT(key_id) FROM e2e_one_time_keys_json"
|
|
" WHERE user_id = ? AND device_id = ?"
|
|
" GROUP BY algorithm"
|
|
)
|
|
txn.execute(sql, (user_id, device_id))
|
|
result = {}
|
|
for algorithm, key_count in txn:
|
|
result[algorithm] = key_count
|
|
return result
|
|
|
|
return self.runInteraction("count_e2e_one_time_keys", _count_e2e_one_time_keys)
|
|
|
|
|
|
class EndToEndKeyStore(EndToEndKeyWorkerStore, SQLBaseStore):
|
|
def set_e2e_device_keys(self, user_id, device_id, time_now, device_keys):
|
|
"""Stores device keys for a device. Returns whether there was a change
|
|
or the keys were already in the database.
|
|
"""
|
|
|
|
def _set_e2e_device_keys_txn(txn):
|
|
old_key_json = self._simple_select_one_onecol_txn(
|
|
txn,
|
|
table="e2e_device_keys_json",
|
|
keyvalues={"user_id": user_id, "device_id": device_id},
|
|
retcol="key_json",
|
|
allow_none=True,
|
|
)
|
|
|
|
# In py3 we need old_key_json to match new_key_json type. The DB
|
|
# returns unicode while encode_canonical_json returns bytes.
|
|
new_key_json = encode_canonical_json(device_keys).decode("utf-8")
|
|
|
|
if old_key_json == new_key_json:
|
|
return False
|
|
|
|
self._simple_upsert_txn(
|
|
txn,
|
|
table="e2e_device_keys_json",
|
|
keyvalues={"user_id": user_id, "device_id": device_id},
|
|
values={"ts_added_ms": time_now, "key_json": new_key_json},
|
|
)
|
|
|
|
return True
|
|
|
|
return self.runInteraction("set_e2e_device_keys", _set_e2e_device_keys_txn)
|
|
|
|
def claim_e2e_one_time_keys(self, query_list):
|
|
"""Take a list of one time keys out of the database"""
|
|
|
|
def _claim_e2e_one_time_keys(txn):
|
|
sql = (
|
|
"SELECT key_id, key_json FROM e2e_one_time_keys_json"
|
|
" WHERE user_id = ? AND device_id = ? AND algorithm = ?"
|
|
" LIMIT 1"
|
|
)
|
|
result = {}
|
|
delete = []
|
|
for user_id, device_id, algorithm in query_list:
|
|
user_result = result.setdefault(user_id, {})
|
|
device_result = user_result.setdefault(device_id, {})
|
|
txn.execute(sql, (user_id, device_id, algorithm))
|
|
for key_id, key_json in txn:
|
|
device_result[algorithm + ":" + key_id] = key_json
|
|
delete.append((user_id, device_id, algorithm, key_id))
|
|
sql = (
|
|
"DELETE FROM e2e_one_time_keys_json"
|
|
" WHERE user_id = ? AND device_id = ? AND algorithm = ?"
|
|
" AND key_id = ?"
|
|
)
|
|
for user_id, device_id, algorithm, key_id in delete:
|
|
txn.execute(sql, (user_id, device_id, algorithm, key_id))
|
|
self._invalidate_cache_and_stream(
|
|
txn, self.count_e2e_one_time_keys, (user_id, device_id)
|
|
)
|
|
return result
|
|
|
|
return self.runInteraction("claim_e2e_one_time_keys", _claim_e2e_one_time_keys)
|
|
|
|
def delete_e2e_keys_by_device(self, user_id, device_id):
|
|
def delete_e2e_keys_by_device_txn(txn):
|
|
self._simple_delete_txn(
|
|
txn,
|
|
table="e2e_device_keys_json",
|
|
keyvalues={"user_id": user_id, "device_id": device_id},
|
|
)
|
|
self._simple_delete_txn(
|
|
txn,
|
|
table="e2e_one_time_keys_json",
|
|
keyvalues={"user_id": user_id, "device_id": device_id},
|
|
)
|
|
self._invalidate_cache_and_stream(
|
|
txn, self.count_e2e_one_time_keys, (user_id, device_id)
|
|
)
|
|
|
|
return self.runInteraction(
|
|
"delete_e2e_keys_by_device", delete_e2e_keys_by_device_txn
|
|
)
|