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@@ -1,161 +0,0 @@
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-# -*- coding: utf-8 -*-
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-# Copyright 2014 OpenMarket Ltd
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-#
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-# Licensed under the Apache License, Version 2.0 (the "License");
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-# you may not use this file except in compliance with the License.
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-# You may obtain a copy of the License at
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-#
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-# http://www.apache.org/licenses/LICENSE-2.0
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-#
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-# Unless required by applicable law or agreed to in writing, software
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-# distributed under the License is distributed on an "AS IS" BASIS,
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-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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-# See the License for the specific language governing permissions and
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-# limitations under the License.
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-
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-
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-from twisted.web.resource import Resource
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-from twisted.web.server import NOT_DONE_YET
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-from twisted.internet import defer
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-from synapse.http.server import respond_with_json_bytes
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-from synapse.crypto.keyclient import fetch_server_key
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-from syutil.crypto.jsonsign import sign_json, verify_signed_json
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-from syutil.base64util import encode_base64, decode_base64
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-from syutil.jsonutil import encode_canonical_json
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-from OpenSSL import crypto
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-from nacl.signing import VerifyKey
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-import logging
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-
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-
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-logger = logging.getLogger(__name__)
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-
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-
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-class LocalKey(Resource):
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- """HTTP resource containing encoding the TLS X.509 certificate and NACL
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- signature verification keys for this server::
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-
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- GET /key HTTP/1.1
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-
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- HTTP/1.1 200 OK
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- Content-Type: application/json
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- {
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- "server_name": "this.server.example.com"
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- "signature_verify_key": # base64 encoded NACL verification key.
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- "tls_certificate": # base64 ASN.1 DER encoded X.509 tls cert.
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- "signatures": {
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- "this.server.example.com": # NACL signature for this server.
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- }
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- }
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- """
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-
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- def __init__(self, key_server):
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- self.key_server = key_server
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- self.response_body = encode_canonical_json(
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- self.response_json_object(key_server)
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- )
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- Resource.__init__(self)
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-
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- @staticmethod
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- def response_json_object(key_server):
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- verify_key_bytes = key_server.signing_key.verify_key.encode()
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- x509_certificate_bytes = crypto.dump_certificate(
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- crypto.FILETYPE_ASN1,
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- key_server.tls_certificate
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- )
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- json_object = {
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- u"server_name": key_server.server_name,
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- u"signature_verify_key": encode_base64(verify_key_bytes),
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- u"tls_certificate": encode_base64(x509_certificate_bytes)
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- }
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- signed_json = sign_json(
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- json_object,
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- key_server.server_name,
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- key_server.signing_key
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- )
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- return signed_json
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-
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- def getChild(self, name, request):
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- logger.info("getChild %s %s", name, request)
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- if name == '':
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- return self
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- else:
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- return RemoteKey(name, self.key_server)
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-
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- def render_GET(self, request):
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- return respond_with_json_bytes(request, 200, self.response_body)
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-
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-
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-class RemoteKey(Resource):
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- """HTTP resource for retreiving the TLS certificate and NACL signature
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- verification keys for a another server. Checks that the reported X.509 TLS
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- certificate matches the one used in the HTTPS connection. Checks that the
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- NACL signature for the remote server is valid. Returns JSON signed by both
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- the remote server and by this server.
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-
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- GET /key/remote.server.example.com HTTP/1.1
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-
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- HTTP/1.1 200 OK
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- Content-Type: application/json
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- {
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- "server_name": "remote.server.example.com"
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- "signature_verify_key": # base64 encoded NACL verification key.
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- "tls_certificate": # base64 ASN.1 DER encoded X.509 tls cert.
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- "signatures": {
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- "remote.server.example.com": # NACL signature for remote server.
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- "this.server.example.com": # NACL signature for this server.
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- }
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- }
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- """
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-
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- isLeaf = True
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-
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- def __init__(self, server_name, key_server):
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- self.server_name = server_name
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- self.key_server = key_server
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- Resource.__init__(self)
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-
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- def render_GET(self, request):
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- self._async_render_GET(request)
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- return NOT_DONE_YET
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-
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- @defer.inlineCallbacks
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- def _async_render_GET(self, request):
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- try:
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- server_keys, certificate = yield fetch_server_key(
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- self.server_name,
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- self.key_server.ssl_context_factory
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- )
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-
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- resp_server_name = server_keys[u"server_name"]
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- verify_key_b64 = server_keys[u"signature_verify_key"]
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- tls_certificate_b64 = server_keys[u"tls_certificate"]
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- verify_key = VerifyKey(decode_base64(verify_key_b64))
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-
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- if resp_server_name != self.server_name:
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- raise ValueError("Wrong server name '%s' != '%s'" %
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- (resp_server_name, self.server_name))
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-
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- x509_certificate_bytes = crypto.dump_certificate(
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- crypto.FILETYPE_ASN1,
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- certificate
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- )
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-
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- if encode_base64(x509_certificate_bytes) != tls_certificate_b64:
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- raise ValueError("TLS certificate doesn't match")
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-
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- verify_signed_json(server_keys, self.server_name, verify_key)
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-
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- signed_json = sign_json(
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- server_keys,
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- self.key_server.server_name,
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- self.key_server.signing_key
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- )
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-
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- json_bytes = encode_canonical_json(signed_json)
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- respond_with_json_bytes(request, 200, json_bytes)
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-
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- except Exception as e:
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- json_bytes = encode_canonical_json({
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- u"error": {u"code": 502, u"message": e.message}
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- })
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- respond_with_json_bytes(request, 502, json_bytes)
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