# Copyright 2019 Matrix.org Foundation C.I.C.
#
# 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 argparse
import json
import logging
import os
import sys
import tempfile
from twisted.internet import defer, task
import synapse
from synapse.app import _base
from synapse.config._base import ConfigError
from synapse.config.homeserver import HomeServerConfig
from synapse.config.logger import setup_logging
from synapse.handlers.admin import ExfiltrationWriter
from synapse.replication.slave.storage._base import BaseSlavedStore
from synapse.replication.slave.storage.account_data import SlavedAccountDataStore
from synapse.replication.slave.storage.appservice import SlavedApplicationServiceStore
from synapse.replication.slave.storage.client_ips import SlavedClientIpStore
from synapse.replication.slave.storage.deviceinbox import SlavedDeviceInboxStore
from synapse.replication.slave.storage.devices import SlavedDeviceStore
from synapse.replication.slave.storage.events import SlavedEventStore
from synapse.replication.slave.storage.filtering import SlavedFilteringStore
from synapse.replication.slave.storage.groups import SlavedGroupServerStore
from synapse.replication.slave.storage.push_rule import SlavedPushRuleStore
from synapse.replication.slave.storage.receipts import SlavedReceiptsStore
from synapse.replication.slave.storage.registration import SlavedRegistrationStore
from synapse.server import HomeServer
from synapse.util.logcontext import LoggingContext
from synapse.util.versionstring import get_version_string
logger = logging.getLogger("synapse.app.admin_cmd")
class AdminCmdSlavedStore(
SlavedReceiptsStore,
SlavedAccountDataStore,
SlavedApplicationServiceStore,
SlavedRegistrationStore,
SlavedFilteringStore,
SlavedGroupServerStore,
SlavedDeviceInboxStore,
SlavedDeviceStore,
SlavedPushRuleStore,
SlavedEventStore,
SlavedClientIpStore,
BaseSlavedStore,
):
pass
class AdminCmdServer(HomeServer):
DATASTORE_CLASS = AdminCmdSlavedStore
async def export_data_command(hs, args):
"""Export data for a user.
Args:
hs (HomeServer)
args (argparse.Namespace)
"""
user_id = args.user_id
directory = args.output_directory
res = await hs.get_admin_handler().export_user_data(
user_id, FileExfiltrationWriter(user_id, directory=directory)
)
print(res)
class FileExfiltrationWriter(ExfiltrationWriter):
"""An ExfiltrationWriter that writes the users data to a directory.
Returns the directory location on completion.
Note: This writes to disk on the main reactor thread.
Args:
user_id (str): The user whose data is being exfiltrated.
directory (str|None): The directory to write the data to, if None then
will write to a temporary directory.
"""
def __init__(self, user_id, directory=None):
self.user_id = user_id
if directory:
self.base_directory = directory
else:
self.base_directory = tempfile.mkdtemp(
prefix="synapse-exfiltrate__%s__" % (user_id,)
)
os.makedirs(self.base_directory, exist_ok=True)
if list(os.listdir(self.base_directory)):
raise Exception("Directory must be empty")
def write_events(self, room_id, events):
room_directory = os.path.join(self.base_directory, "rooms", room_id)
os.makedirs(room_directory, exist_ok=True)
events_file = os.path.join(room_directory, "events")
with open(events_file, "a") as f:
for event in events:
print(json.dumps(event.get_pdu_json()), file=f)
def write_state(self, room_id, event_id, state):
room_directory = os.path.join(self.base_directory, "rooms", room_id)
state_directory = os.path.join(room_directory, "state")
os.makedirs(state_directory, exist_ok=True)
event_file = os.path.join(state_directory, event_id)
with open(event_file, "a") as f:
for event in state.values():
print(json.dumps(event.get_pdu_json()), file=f)
def write_invite(self, room_id, event, state):
self.write_events(room_id, [event])
# We write the invite state somewhere else as they aren't full events
# and are only a subset of the state at the event.
room_directory = os.path.join(self.base_directory, "rooms", room_id)
os.makedirs(room_directory, exist_ok=True)
invite_state = os.path.join(room_directory, "invite_state")
with open(invite_state, "a") as f:
for event in state.values():
print(json.dumps(event), file=f)
def finished(self):
return self.base_directory
def start(config_options):
parser = argparse.ArgumentParser(description="Synapse Admin Command")
HomeServerConfig.add_arguments_to_parser(parser)
subparser = parser.add_subparsers(
title="Admin Commands",
required=True,
dest="command",
metavar="<admin_command>",
help="The admin command to perform.",
)
export_data_parser = subparser.add_parser(
"export-data", help="Export all data for a user"
)
export_data_parser.add_argument("user_id", help="User to extra data from")
export_data_parser.add_argument(
"--output-directory",
action="store",
metavar="DIRECTORY",
required=False,
help="The directory to store the exported data in. Must be empty. Defaults"
" to creating a temp directory.",
)
export_data_parser.set_defaults(func=export_data_command)
try:
config, args = HomeServerConfig.load_config_with_parser(parser, config_options)
except ConfigError as e:
sys.stderr.write("\n" + str(e) + "\n")
sys.exit(1)
if config.worker.worker_app is not None:
assert config.worker.worker_app == "synapse.app.admin_cmd"
# Update the config with some basic overrides so that don't have to specify
# a full worker config.
config.worker.worker_app = "synapse.app.admin_cmd"
if (
not config.worker_daemonize
and not config.worker_log_file
and not config.worker_log_config
):
# Since we're meant to be run as a "command" let's not redirect stdio
# unless we've actually set log config.
config.no_redirect_stdio = True
# Explicitly disable background processes
config.update_user_directory = False
config.worker.run_background_tasks = False
config.start_pushers = False
config.pusher_shard_config.instances = []
config.send_federation = False
config.federation_shard_config.instances = []
synapse.events.USE_FROZEN_DICTS = config.use_frozen_dicts
ss = AdminCmdServer(
config.server.server_name,
config=config,
version_string="Synapse/" + get_version_string(synapse),
)
setup_logging(ss, config, use_worker_options=True)
ss.setup()
# We use task.react as the basic run command as it correctly handles tearing
# down the reactor when the deferreds resolve and setting the return value.
# We also make sure that `_base.start` gets run before we actually run the
# command.
async def run():
with LoggingContext("command"):
_base.start(ss)
await args.func(ss, args)
_base.start_worker_reactor(
"synapse-admin-cmd",
config,
run_command=lambda: task.react(lambda _reactor: defer.ensureDeferred(run())),
)
if __name__ == "__main__":
with LoggingContext("main"):
start(sys.argv[1:])