From 11a974da21f5a8e815e647c212796755414001ca Mon Sep 17 00:00:00 2001
From: Daniel Wagner-Hall <daniel@matrix.org>
Date: Wed, 6 Jan 2016 18:08:52 +0000
Subject: [PATCH] Add /_matrix/versions to report supported versions

---
 synapse/app/homeserver.py       |  1 +
 synapse/rest/__init__.py        |  6 ++++++
 synapse/rest/client/versions.py | 36 +++++++++++++++++++++++++++++++++
 3 files changed, 43 insertions(+)
 create mode 100644 synapse/rest/client/versions.py

diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py
index 49173e95b..bbf8bee8e 100755
--- a/synapse/app/homeserver.py
+++ b/synapse/app/homeserver.py
@@ -185,6 +185,7 @@ class SynapseHomeServer(HomeServer):
                         "/_matrix/client/r0": client_resource,
                         "/_matrix/client/unstable": client_resource,
                         "/_matrix/client/v2_alpha": client_resource,
+                        "/_matrix/client/versions": client_resource,
                     })
 
                 if name == "federation":
diff --git a/synapse/rest/__init__.py b/synapse/rest/__init__.py
index 7b67e9620..43ef29db7 100644
--- a/synapse/rest/__init__.py
+++ b/synapse/rest/__init__.py
@@ -13,6 +13,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from synapse.rest.client import (
+    versions,
+)
+
 from synapse.rest.client.v1 import (
     room,
     events,
@@ -53,6 +57,8 @@ class ClientRestResource(JsonResource):
 
     @staticmethod
     def register_servlets(client_resource, hs):
+        versions.register_servlets(client_resource)
+
         # "v1"
         room.register_servlets(hs, client_resource)
         events.register_servlets(hs, client_resource)
diff --git a/synapse/rest/client/versions.py b/synapse/rest/client/versions.py
new file mode 100644
index 000000000..349ef6b39
--- /dev/null
+++ b/synapse/rest/client/versions.py
@@ -0,0 +1,36 @@
+# -*- coding: utf-8 -*-
+# Copyright 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.
+
+from synapse.http.servlet import RestServlet
+
+import logging
+import re
+
+logger = logging.getLogger(__name__)
+
+
+class VersionsRestServlet(RestServlet):
+    PATTERNS = [re.compile("^/_matrix/client/versions$")]
+
+    def on_GET(self, request):
+        return (200, {
+            "versions": [
+                "r0.0.1",
+            ]
+        })
+
+
+def register_servlets(http_server):
+    VersionsRestServlet().register(http_server)