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Add a version 2 of the key server api

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This commit is contained in:
Mark Haines 2015-04-14 16:04:52 +01:00
parent be7ead6946
commit d488463fa3
6 changed files with 179 additions and 2 deletions
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1
synapse/api/urls.py
View file

@ -22,5 +22,6 @@ STATIC_PREFIX = "/_matrix/static"
WEB_CLIENT_PREFIX = "/_matrix/client"
CONTENT_REPO_PREFIX = "/_matrix/content"
SERVER_KEY_PREFIX = "/_matrix/key/v1"
SERVER_KEY_V2_PREFIX = "/_matrix/key/v2"
MEDIA_PREFIX = "/_matrix/media/v1"
APP_SERVICE_PREFIX = "/_matrix/appservice/v1"

8
synapse/app/homeserver.py
View file

@ -35,10 +35,12 @@ from synapse.http.server import JsonResource, RootRedirect
from synapse.rest.media.v0.content_repository import ContentRepoResource
from synapse.rest.media.v1.media_repository import MediaRepositoryResource
from synapse.rest.key.v1.server_key_resource import LocalKey
from synapse.rest.key.v2 import KeyApiV2Resource
from synapse.http.matrixfederationclient import MatrixFederationHttpClient
from synapse.api.urls import (
CLIENT_PREFIX, FEDERATION_PREFIX, WEB_CLIENT_PREFIX, CONTENT_REPO_PREFIX,
SERVER_KEY_PREFIX, MEDIA_PREFIX, CLIENT_V2_ALPHA_PREFIX, STATIC_PREFIX
SERVER_KEY_PREFIX, MEDIA_PREFIX, CLIENT_V2_ALPHA_PREFIX, STATIC_PREFIX,
SERVER_KEY_V2_PREFIX,
)
from synapse.config.homeserver import HomeServerConfig
from synapse.crypto import context_factory
@ -96,6 +98,9 @@ class SynapseHomeServer(HomeServer):
def build_resource_for_server_key(self):
return LocalKey(self)
def build_resource_for_server_key_v2(self):
return KeyApiV2Resource(self)
def build_resource_for_metrics(self):
if self.get_config().enable_metrics:
return MetricsResource(self)
@ -135,6 +140,7 @@ class SynapseHomeServer(HomeServer):
(FEDERATION_PREFIX, self.get_resource_for_federation()),
(CONTENT_REPO_PREFIX, self.get_resource_for_content_repo()),
(SERVER_KEY_PREFIX, self.get_resource_for_server_key()),
(SERVER_KEY_V2_PREFIX, self.get_resource_for_server_key_v2()),
(MEDIA_PREFIX, self.get_resource_for_media_repository()),
(STATIC_PREFIX, self.get_resource_for_static_content()),
]

34
synapse/config/server.py
View file

@ -23,6 +23,9 @@ class ServerConfig(Config):
super(ServerConfig, self).__init__(args)
self.server_name = args.server_name
self.signing_key = self.read_signing_key(args.signing_key_path)
self.old_signing_keys = self.read_old_signing_keys(
args.old_signing_key_path
)
self.bind_port = args.bind_port
self.bind_host = args.bind_host
self.unsecure_port = args.unsecure_port
@ -31,6 +34,7 @@ class ServerConfig(Config):
self.web_client = args.web_client
self.manhole = args.manhole
self.soft_file_limit = args.soft_file_limit
self.key_refresh_interval = args.key_refresh_interval
if not args.content_addr:
host = args.server_name
@ -55,6 +59,14 @@ class ServerConfig(Config):
)
server_group.add_argument("--signing-key-path",
help="The signing key to sign messages with")
server_group.add_argument("--old-signing-key-path",
help="The old signing keys")
server_group.add_argument("--key-refresh-interval",
default=24 * 60 * 60 * 1000, # 1 Day
help="How long a key response is valid for."
" Used to set the exipiry in /key/v2/."
" Controls how frequently servers will"
" query what keys are still valid")
server_group.add_argument("-p", "--bind-port", metavar="PORT",
type=int, help="https port to listen on",
default=8448)
@ -96,6 +108,19 @@ class ServerConfig(Config):
" Try running again with --generate-config"
)
def read_old_signing_keys(self, old_signing_key_path):
old_signing_keys = self.read_file(
old_signing_key_path, "old_signing_key"
)
try:
return syutil.crypto.signing_key.read_old_signing_keys(
old_signing_keys.splitlines(True)
)
except Exception:
raise ConfigError(
"Error reading old signing keys."
)
@classmethod
def generate_config(cls, args, config_dir_path):
super(ServerConfig, cls).generate_config(args, config_dir_path)
@ -110,7 +135,7 @@ class ServerConfig(Config):
with open(args.signing_key_path, "w") as signing_key_file:
syutil.crypto.signing_key.write_signing_keys(
signing_key_file,
(syutil.crypto.signing_key.generate_singing_key("auto"),),
(syutil.crypto.signing_key.generate_signing_key("auto"),),
)
else:
signing_keys = cls.read_file(args.signing_key_path, "signing_key")
@ -126,3 +151,10 @@ class ServerConfig(Config):
signing_key_file,
(key,),
)
if not args.old_signing_key_path:
args.old_signing_key_path = base_key_name + ".old.signing.keys"
if not os.path.exists(args.old_signing_key_path):
with open(args.old_signing_key_path, "w") as old_signing_key_file:
pass

19
synapse/rest/key/v2/__init__.py Normal file
View file

@ -0,0 +1,19 @@
# -*- coding: utf-8 -*-
# Copyright 2015 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 .local_key_resource import LocalKey
class KeyApiV2Resource(LocalKey):
pass

118
synapse/rest/key/v2/local_key_resource.py Normal file
View file

@ -0,0 +1,118 @@
# -*- coding: utf-8 -*-
# Copyright 2014, 2015 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 twisted.web.resource import Resource
from synapse.http.server import respond_with_json_bytes
from syutil.crypto.jsonsign import sign_json
from syutil.base64util import encode_base64
from syutil.jsonutil import encode_canonical_json
from OpenSSL import crypto
import logging
logger = logging.getLogger(__name__)
class LocalKey(Resource):
"""HTTP resource containing encoding the TLS X.509 certificate and NACL
signature verification keys for this server::
GET /_matrix/key/v2/ HTTP/1.1
HTTP/1.1 200 OK
Content-Type: application/json
{
"expires": # integer posix timestamp when this result expires.
"server_name": "this.server.example.com"
"verify_keys": {
"algorithm:version": # base64 encoded NACL verification key.
},
"old_verify_keys": {
"algorithm:version": {
"expired": # integer posix timestamp when the key expired.
"key": # base64 encoded NACL verification key.
}
}
"tls_certificate": # base64 ASN.1 DER encoded X.509 tls cert.
"signatures": {
"this.server.example.com": {
"algorithm:version": # NACL signature for this server
}
}
}
"""
def __init__(self, hs):
self.version_string = hs.version_string
self.config = hs.config
self.clock = hs.clock
self.update_response_body(self.clock.time_msec())
Resource.__init__(self)
def update_response_body(self, time_now_msec):
refresh_interval = self.config.key_refresh_interval
self.expires = int(time_now_msec + refresh_interval)
self.response_body = encode_canonical_json(self.response_json_object())
def response_json_object(self):
verify_keys = {}
for key in self.config.signing_key:
verify_key_bytes = key.verify_key.encode()
key_id = "%s:%s" % (key.alg, key.version)
verify_keys[key_id] = encode_base64(verify_key_bytes)
old_verify_keys = {}
for key in self.config.old_signing_keys:
key_id = "%s:%s" % (key.alg, key.version)
verify_key_bytes = key.encode()
old_verify_keys[key_id] = {
u"key": encode_base64(verify_key_bytes),
u"expired": key.expired,
}
x509_certificate_bytes = crypto.dump_certificate(
crypto.FILETYPE_ASN1,
self.config.tls_certificate
)
json_object = {
u"expires": self.expires,
u"server_name": self.config.server_name,
u"verify_keys": verify_keys,
u"old_verify_keys": old_verify_keys,
u"tls_certificate": encode_base64(x509_certificate_bytes)
}
for key in self.config.signing_key:
json_object = sign_json(
json_object,
self.config.server_name,
key,
)
return json_object
def render_GET(self, request):
time_now = self.clock.time_msec()
# Update the expiry time if less than half the interval remains.
if time_now + self.config.key_refresh_interval / 2 > self.expires:
self.update_response_body()
return respond_with_json_bytes(
request, 200, self.response_body,
version_string=self.version_string
)
def getChild(self, name, request):
if name == '':
return self

1
synapse/server.py
View file

@ -78,6 +78,7 @@ class BaseHomeServer(object):
'resource_for_web_client',
'resource_for_content_repo',
'resource_for_server_key',
'resource_for_server_key_v2',
'resource_for_media_repository',
'resource_for_metrics',
'event_sources',