mirror of
https://git.anonymousland.org/anonymousland/synapse.git
synced 2024-12-19 02:44:18 -05:00
108 lines
3.9 KiB
Python
108 lines
3.9 KiB
Python
# 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 logging
|
|
import re
|
|
from typing import TYPE_CHECKING, Optional, Tuple
|
|
|
|
from signedjson.sign import sign_json
|
|
from unpaddedbase64 import encode_base64
|
|
|
|
from twisted.web.server import Request
|
|
|
|
from synapse.http.servlet import RestServlet
|
|
from synapse.types import JsonDict
|
|
|
|
if TYPE_CHECKING:
|
|
from synapse.server import HomeServer
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class LocalKey(RestServlet):
|
|
"""HTTP resource containing encoding the TLS X.509 certificate and NACL
|
|
signature verification keys for this server::
|
|
|
|
GET /_matrix/key/v2/server/a.key.id HTTP/1.1
|
|
|
|
HTTP/1.1 200 OK
|
|
Content-Type: application/json
|
|
{
|
|
"valid_until_ts": # integer posix timestamp when this result expires.
|
|
"server_name": "this.server.example.com"
|
|
"verify_keys": {
|
|
"algorithm:version": {
|
|
"key": # base64 encoded NACL verification key.
|
|
}
|
|
},
|
|
"old_verify_keys": {
|
|
"algorithm:version": {
|
|
"expired_ts": # integer posix timestamp when the key expired.
|
|
"key": # base64 encoded NACL verification key.
|
|
}
|
|
},
|
|
"signatures": {
|
|
"this.server.example.com": {
|
|
"algorithm:version": # NACL signature for this server
|
|
}
|
|
}
|
|
}
|
|
"""
|
|
|
|
PATTERNS = (re.compile("^/_matrix/key/v2/server(/(?P<key_id>[^/]*))?$"),)
|
|
|
|
def __init__(self, hs: "HomeServer"):
|
|
self.config = hs.config
|
|
self.clock = hs.get_clock()
|
|
self.update_response_body(self.clock.time_msec())
|
|
|
|
def update_response_body(self, time_now_msec: int) -> None:
|
|
refresh_interval = self.config.key.key_refresh_interval
|
|
self.valid_until_ts = int(time_now_msec + refresh_interval)
|
|
self.response_body = self.response_json_object()
|
|
|
|
def response_json_object(self) -> JsonDict:
|
|
verify_keys = {}
|
|
for signing_key in self.config.key.signing_key:
|
|
verify_key_bytes = signing_key.verify_key.encode()
|
|
key_id = "%s:%s" % (signing_key.alg, signing_key.version)
|
|
verify_keys[key_id] = {"key": encode_base64(verify_key_bytes)}
|
|
|
|
old_verify_keys = {}
|
|
for key_id, old_signing_key in self.config.key.old_signing_keys.items():
|
|
verify_key_bytes = old_signing_key.encode()
|
|
old_verify_keys[key_id] = {
|
|
"key": encode_base64(verify_key_bytes),
|
|
"expired_ts": old_signing_key.expired,
|
|
}
|
|
|
|
json_object = {
|
|
"valid_until_ts": self.valid_until_ts,
|
|
"server_name": self.config.server.server_name,
|
|
"verify_keys": verify_keys,
|
|
"old_verify_keys": old_verify_keys,
|
|
}
|
|
for key in self.config.key.signing_key:
|
|
json_object = sign_json(json_object, self.config.server.server_name, key)
|
|
return json_object
|
|
|
|
def on_GET(
|
|
self, request: Request, key_id: Optional[str] = None
|
|
) -> Tuple[int, JsonDict]:
|
|
time_now = self.clock.time_msec()
|
|
# Update the expiry time if less than half the interval remains.
|
|
if time_now + self.config.key.key_refresh_interval / 2 > self.valid_until_ts:
|
|
self.update_response_body(time_now)
|
|
return 200, self.response_body
|