diff --git a/synapse/rest/client/v1/admin.py b/synapse/rest/client/v1/admin.py
index 2dc50e582b..9e9c175970 100644
--- a/synapse/rest/client/v1/admin.py
+++ b/synapse/rest/client/v1/admin.py
@@ -14,6 +14,8 @@
# See the License for the specific language governing permissions and
# limitations under the License.
+import hashlib
+import hmac
import logging
from six.moves import http_client
@@ -63,6 +65,125 @@ class UsersRestServlet(ClientV1RestServlet):
defer.returnValue((200, ret))
+class UserRegisterServlet(ClientV1RestServlet):
+ """
+ Attributes:
+ NONCE_TIMEOUT (int): Seconds until a generated nonce won't be accepted
+ nonces (dict[str, int]): The nonces that we will accept. A dict of
+ nonce to the time it was generated, in int seconds.
+ """
+ PATTERNS = client_path_patterns("/admin/register")
+ NONCE_TIMEOUT = 60
+
+ def __init__(self, hs):
+ super(UserRegisterServlet, self).__init__(hs)
+ self.handlers = hs.get_handlers()
+ self.reactor = hs.get_reactor()
+ self.nonces = {}
+ self.hs = hs
+
+ def _clear_old_nonces(self):
+ """
+ Clear out old nonces that are older than NONCE_TIMEOUT.
+ """
+ now = int(self.reactor.seconds())
+
+ for k, v in list(self.nonces.items()):
+ if now - v > self.NONCE_TIMEOUT:
+ del self.nonces[k]
+
+ def on_GET(self, request):
+ """
+ Generate a new nonce.
+ """
+ self._clear_old_nonces()
+
+ nonce = self.hs.get_secrets().token_hex(64)
+ self.nonces[nonce] = int(self.reactor.seconds())
+ return (200, {"nonce": nonce.encode('ascii')})
+
+ @defer.inlineCallbacks
+ def on_POST(self, request):
+ self._clear_old_nonces()
+
+ if not self.hs.config.registration_shared_secret:
+ raise SynapseError(400, "Shared secret registration is not enabled")
+
+ body = parse_json_object_from_request(request)
+
+ if "nonce" not in body:
+ raise SynapseError(
+ 400, "nonce must be specified", errcode=Codes.BAD_JSON,
+ )
+
+ nonce = body["nonce"]
+
+ if nonce not in self.nonces:
+ raise SynapseError(
+ 400, "unrecognised nonce",
+ )
+
+ # Delete the nonce, so it can't be reused, even if it's invalid
+ del self.nonces[nonce]
+
+ if "username" not in body:
+ raise SynapseError(
+ 400, "username must be specified", errcode=Codes.BAD_JSON,
+ )
+ else:
+ if (not isinstance(body['username'], str) or len(body['username']) > 512):
+ raise SynapseError(400, "Invalid username")
+
+ username = body["username"].encode("utf-8")
+ if b"\x00" in username:
+ raise SynapseError(400, "Invalid username")
+
+ if "password" not in body:
+ raise SynapseError(
+ 400, "password must be specified", errcode=Codes.BAD_JSON,
+ )
+ else:
+ if (not isinstance(body['password'], str) or len(body['password']) > 512):
+ raise SynapseError(400, "Invalid password")
+
+ password = body["password"].encode("utf-8")
+ if b"\x00" in password:
+ raise SynapseError(400, "Invalid password")
+
+ admin = body.get("admin", None)
+ got_mac = body["mac"]
+
+ want_mac = hmac.new(
+ key=self.hs.config.registration_shared_secret.encode(),
+ digestmod=hashlib.sha1,
+ )
+ want_mac.update(nonce)
+ want_mac.update(b"\x00")
+ want_mac.update(username)
+ want_mac.update(b"\x00")
+ want_mac.update(password)
+ want_mac.update(b"\x00")
+ want_mac.update(b"admin" if admin else b"notadmin")
+ want_mac = want_mac.hexdigest()
+
+ if not hmac.compare_digest(want_mac, got_mac):
+ raise SynapseError(
+ 403, "HMAC incorrect",
+ )
+
+ # Reuse the parts of RegisterRestServlet to reduce code duplication
+ from synapse.rest.client.v2_alpha.register import RegisterRestServlet
+ register = RegisterRestServlet(self.hs)
+
+ (user_id, _) = yield register.registration_handler.register(
+ localpart=username.lower(), password=password, admin=bool(admin),
+ generate_token=False,
+ )
+
+ result = yield register._create_registration_details(user_id, body)
+ defer.returnValue((200, result))
+
+
class WhoisRestServlet(ClientV1RestServlet):
PATTERNS = client_path_patterns("/admin/whois/(?P<user_id>[^/]*)")
@@ -614,3 +735,4 @@ def register_servlets(hs, http_server):
ShutdownRoomRestServlet(hs).register(http_server)
QuarantineMediaInRoom(hs).register(http_server)
ListMediaInRoom(hs).register(http_server)
+ UserRegisterServlet(hs).register(http_server)
diff --git a/synapse/secrets.py b/synapse/secrets.py
new file mode 100644
index 0000000000..f397daaa5e
--- /dev/null
+++ b/synapse/secrets.py
@@ -0,0 +1,42 @@
+# -*- coding: utf-8 -*-
+# Copyright 2018 New Vector 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.
+
+"""
+Injectable secrets module for Synapse.
+
+See https://docs.python.org/3/library/secrets.html#module-secrets for the API
+used in Python 3.6, and the API emulated in Python 2.7.
+"""
+
+import six
+
+if six.PY3:
+ import secrets
+
+ def Secrets():
+ return secrets
+
+
+else:
+
+ import os
+ import binascii
+
+ class Secrets(object):
+ def token_bytes(self, nbytes=32):
+ return os.urandom(nbytes)
+
+ def token_hex(self, nbytes=32):
+ return binascii.hexlify(self.token_bytes(nbytes))
diff --git a/synapse/server.py b/synapse/server.py
index 92bea96c5c..fd4f992258 100644
--- a/synapse/server.py
+++ b/synapse/server.py
@@ -74,6 +74,7 @@ from synapse.rest.media.v1.media_repository import (
MediaRepository,
MediaRepositoryResource,
)
+from synapse.secrets import Secrets
from synapse.server_notices.server_notices_manager import ServerNoticesManager
from synapse.server_notices.server_notices_sender import ServerNoticesSender
from synapse.server_notices.worker_server_notices_sender import WorkerServerNoticesSender
@@ -158,6 +159,7 @@ class HomeServer(object):
'groups_server_handler',
'groups_attestation_signing',
'groups_attestation_renewer',
+ 'secrets',
'spam_checker',
'room_member_handler',
'federation_registry',
@@ -405,6 +407,9 @@ class HomeServer(object):
def build_groups_attestation_renewer(self):
return GroupAttestionRenewer(self)
+ def build_secrets(self):
+ return Secrets()
+
def build_spam_checker(self):
return SpamChecker(self)
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