diff options
Diffstat (limited to 'synapse/rest/key/v2')
| -rw-r--r-- | synapse/rest/key/v2/__init__.py | 19 | ||||
| -rw-r--r-- | synapse/rest/key/v2/local_key_resource.py | 118 |
2 files changed, 137 insertions, 0 deletions
diff --git a/synapse/rest/key/v2/__init__.py b/synapse/rest/key/v2/__init__.py new file mode 100644 index 0000000000..b79ed02590 --- /dev/null +++ b/synapse/rest/key/v2/__init__.py @@ -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 diff --git a/synapse/rest/key/v2/local_key_resource.py b/synapse/rest/key/v2/local_key_resource.py new file mode 100644 index 0000000000..5c77f308df --- /dev/null +++ b/synapse/rest/key/v2/local_key_resource.py @@ -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 |