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# -*- coding: utf-8 -*-
# Copyright 2017 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.
# 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 twisted.internet import defer
from ._base import SQLBaseStore
class EndToEndRoomKeyStore(SQLBaseStore):
@defer.inlineCallbacks
def get_e2e_room_key(self, user_id, version, room_id, session_id):
row = yield self._simple_select_one(
table="e2e_room_keys",
keyvalues={
"user_id": user_id,
"version": version,
"room_id": room_id,
"session_id": session_id,
},
retcols=(
"first_message_index",
"forwarded_count",
"is_verified",
"session_data",
),
desc="get_e2e_room_key",
)
defer.returnValue(row)
def set_e2e_room_key(self, user_id, version, room_id, session_id, room_key):
yield self._simple_upsert(
table="e2e_room_keys",
keyvalues={
"user_id": user_id,
"room_id": room_id,
"session_id": session_id,
},
values={
"version": version,
"first_message_index": room_key['first_message_index'],
"forwarded_count": room_key['forwarded_count'],
"is_verified": room_key['is_verified'],
"session_data": room_key['session_data'],
},
lock=False,
)
# XXX: this isn't currently used and isn't tested anywhere
# it could be used in future for bulk-uploading new versions of room_keys
# for a user or something though.
def set_e2e_room_keys(self, user_id, version, room_keys):
def _set_e2e_room_keys_txn(txn):
values = []
for room_id in room_keys['rooms']:
for session_id in room_keys['rooms'][room_id]['sessions']:
session = room_keys['rooms'][room_id]['sessions'][session_id]
values.append(
{
"user_id": user_id,
"room_id": room_id,
"session_id": session_id,
"version": version,
"first_message_index": session['first_message_index'],
"forwarded_count": session['forwarded_count'],
"is_verified": session['is_verified'],
"session_data": session['session_data'],
}
)
self._simple_insert_many_txn(
txn,
table="e2e_room_keys",
values=values
)
return True
return self.runInteraction(
"set_e2e_room_keys", _set_e2e_room_keys_txn
)
@defer.inlineCallbacks
def get_e2e_room_keys(
self, user_id, version, room_id=room_id, session_id=session_id
):
keyvalues = {
"user_id": user_id,
"version": version,
}
if room_id:
keyvalues['room_id'] = room_id
if session_id:
keyvalues['session_id'] = session_id
rows = yield self._simple_select_list(
table="e2e_room_keys",
keyvalues=keyvalues,
retcols=(
"user_id",
"room_id",
"session_id",
"first_message_index",
"forwarded_count",
"is_verified",
"session_data",
),
desc="get_e2e_room_keys",
)
sessions = {}
for row in rows:
room_entry = sessions['rooms'].setdefault(row['room_id'], {"sessions": {}})
room_entry['sessions'][row['session_id']] = {
"first_message_index": row["first_message_index"],
"forwarded_count": row["forwarded_count"],
"is_verified": row["is_verified"],
"session_data": row["session_data"],
}
defer.returnValue(sessions)
@defer.inlineCallbacks
def delete_e2e_room_keys(
self, user_id, version, room_id=room_id, session_id=session_id
):
keyvalues = {
"user_id": user_id,
"version": version,
}
if room_id:
keyvalues['room_id'] = room_id
if session_id:
keyvalues['session_id'] = session_id
yield self._simple_delete(
table="e2e_room_keys",
keyvalues=keyvalues,
desc="delete_e2e_room_keys",
)
@defer.inlineCallbacks
def get_e2e_room_key_version_info(self, user_id, version):
row = yield self._simple_select_one(
table="e2e_room_key_versions",
keyvalues={
"user_id": user_id,
"version": version,
},
retcols=(
"user_id",
"version",
"algorithm",
"auth_data",
),
desc="get_e2e_room_key_version_info",
)
defer.returnValue(row)
def create_e2e_room_key_version(self, user_id, info):
"""Atomically creates a new version of this user's e2e_room_keys store
with the given version info.
"""
def _create_e2e_room_key_version_txn(txn):
txn.execute(
"SELECT MAX(version) FROM e2e_room_key_versions WHERE user_id=?",
(user_id,)
)
current_version = txn.fetchone()[0]
if current_version is None:
current_version = 0
new_version = current_version + 1
self._simple_insert_txn(
txn,
table="e2e_room_key_versions",
values={
"user_id": user_id,
"version": new_version,
"algorithm": info["algorithm"],
"auth_data": info["auth_data"],
},
)
return new_version
return self.runInteraction(
"create_e2e_room_key_version_txn", _create_e2e_room_key_version_txn
)
@defer.inlineCallbacks
def delete_e2e_room_key_version(self, user_id, version):
keyvalues = {
"user_id": user_id,
"version": version,
}
yield self._simple_delete(
table="e2e_room_key_versions",
keyvalues=keyvalues,
desc="delete_e2e_room_key_version",
)
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