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-rw-r--r--synapse/rest/client/versions.py13
-rw-r--r--synapse/rest/media/v1/config_resource.py48
-rw-r--r--synapse/rest/media/v1/media_repository.py3
3 files changed, 62 insertions, 2 deletions
diff --git a/synapse/rest/client/versions.py b/synapse/rest/client/versions.py
index 6ac2987b98..29e62bfcdd 100644
--- a/synapse/rest/client/versions.py
+++ b/synapse/rest/client/versions.py
@@ -27,11 +27,22 @@ class VersionsRestServlet(RestServlet):
     def on_GET(self, request):
         return (200, {
             "versions": [
+                # XXX: at some point we need to decide whether we need to include
+                # the previous version numbers, given we've defined r0.3.0 to be
+                # backwards compatible with r0.2.0.  But need to check how
+                # conscientious we've been in compatibility, and decide whether the
+                # middle number is the major revision when at 0.X.Y (as opposed to
+                # X.Y.Z).  And we need to decide whether it's fair to make clients
+                # parse the version string to figure out what's going on.
                 "r0.0.1",
                 "r0.1.0",
                 "r0.2.0",
                 "r0.3.0",
-            ]
+            ],
+            # as per MSC1497:
+            "unstable_features": {
+                "m.lazy_load_members": True,
+            }
         })
 
 
diff --git a/synapse/rest/media/v1/config_resource.py b/synapse/rest/media/v1/config_resource.py
new file mode 100644
index 0000000000..d6605b6027
--- /dev/null
+++ b/synapse/rest/media/v1/config_resource.py
@@ -0,0 +1,48 @@
+# -*- coding: utf-8 -*-
+# Copyright 2018 Will Hunt <will@half-shot.uk>
+#
+# 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.internet import defer
+from twisted.web.resource import Resource
+from twisted.web.server import NOT_DONE_YET
+
+from synapse.http.server import respond_with_json, wrap_json_request_handler
+
+
+class MediaConfigResource(Resource):
+    isLeaf = True
+
+    def __init__(self, hs):
+        Resource.__init__(self)
+        config = hs.get_config()
+        self.clock = hs.get_clock()
+        self.auth = hs.get_auth()
+        self.limits_dict = {
+            "m.upload.size": config.max_upload_size,
+        }
+
+    def render_GET(self, request):
+        self._async_render_GET(request)
+        return NOT_DONE_YET
+
+    @wrap_json_request_handler
+    @defer.inlineCallbacks
+    def _async_render_GET(self, request):
+        yield self.auth.get_user_by_req(request)
+        respond_with_json(request, 200, self.limits_dict)
+
+    def render_OPTIONS(self, request):
+        respond_with_json(request, 200, {}, send_cors=True)
+        return NOT_DONE_YET
diff --git a/synapse/rest/media/v1/media_repository.py b/synapse/rest/media/v1/media_repository.py
index 4c589e05e0..241c972070 100644
--- a/synapse/rest/media/v1/media_repository.py
+++ b/synapse/rest/media/v1/media_repository.py
@@ -42,6 +42,7 @@ from synapse.util.retryutils import NotRetryingDestination
 from synapse.util.stringutils import is_ascii, random_string
 
 from ._base import FileInfo, respond_404, respond_with_responder
+from .config_resource import MediaConfigResource
 from .download_resource import DownloadResource
 from .filepath import MediaFilePaths
 from .identicon_resource import IdenticonResource
@@ -754,7 +755,6 @@ class MediaRepositoryResource(Resource):
         Resource.__init__(self)
 
         media_repo = hs.get_media_repository()
-
         self.putChild("upload", UploadResource(hs, media_repo))
         self.putChild("download", DownloadResource(hs, media_repo))
         self.putChild("thumbnail", ThumbnailResource(
@@ -765,3 +765,4 @@ class MediaRepositoryResource(Resource):
             self.putChild("preview_url", PreviewUrlResource(
                 hs, media_repo, media_repo.media_storage,
             ))
+        self.putChild("config", MediaConfigResource(hs))