Synapse 1.20.0rc5 (2020-09-18)

==============================
 
 In addition to the below, Synapse 1.20.0rc5 also includes the bug fix that was included in 1.19.3.
 
 Features
 --------
 
 - Add flags to the `/versions` endpoint for whether new rooms default to using E2EE. ([\#8343](https://github.com/matrix-org/synapse/issues/8343))
 
 Bugfixes
 --------
 
 - Fix rate limiting of federation `/send` requests. ([\#8342](https://github.com/matrix-org/synapse/issues/8342))
 - Fix a longstanding bug where back pagination over federation could get stuck if it failed to handle a received event. ([\#8349](https://github.com/matrix-org/synapse/issues/8349))
 
 Internal Changes
 ----------------
 
 - Blacklist [MSC2753](https://github.com/matrix-org/matrix-doc/pull/2753) SyTests until it is implemented. ([\#8285](https://github.com/matrix-org/synapse/issues/8285))
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Merge tag 'v1.20.0rc5' into develop

Synapse 1.20.0rc5 (2020-09-18)
==============================

In addition to the below, Synapse 1.20.0rc5 also includes the bug fix that was included in 1.19.3.

Features
--------

- Add flags to the `/versions` endpoint for whether new rooms default to using E2EE. ([\#8343](https://github.com/matrix-org/synapse/issues/8343))

Bugfixes
--------

- Fix rate limiting of federation `/send` requests. ([\#8342](https://github.com/matrix-org/synapse/issues/8342))
- Fix a longstanding bug where back pagination over federation could get stuck if it failed to handle a received event. ([\#8349](https://github.com/matrix-org/synapse/issues/8349))

Internal Changes
----------------

- Blacklist [MSC2753](https://github.com/matrix-org/matrix-doc/pull/2753) SyTests until it is implemented. ([\#8285](https://github.com/matrix-org/synapse/issues/8285))

synapse/rest/client/versions.py

@@ -19,6 +19,7 @@
 import logging
 import re
 
+from synapse.api.constants import RoomCreationPreset
 from synapse.http.servlet import RestServlet
 
 logger = logging.getLogger(__name__)
@@ -31,6 +32,20 @@ class VersionsRestServlet(RestServlet):
         super().__init__()
         self.config = hs.config
 
+        # Calculate these once since they shouldn't change after start-up.
+        self.e2ee_forced_public = (
+            RoomCreationPreset.PUBLIC_CHAT
+            in self.config.encryption_enabled_by_default_for_room_presets
+        )
+        self.e2ee_forced_private = (
+            RoomCreationPreset.PRIVATE_CHAT
+            in self.config.encryption_enabled_by_default_for_room_presets
+        )
+        self.e2ee_forced_trusted_private = (
+            RoomCreationPreset.TRUSTED_PRIVATE_CHAT
+            in self.config.encryption_enabled_by_default_for_room_presets
+        )
+
     def on_GET(self, request):
         return (
             200,
@@ -62,6 +77,10 @@ class VersionsRestServlet(RestServlet):
                     "org.matrix.msc2432": True,
                     # Implements additional endpoints as described in MSC2666
                     "uk.half-shot.msc2666": True,
+                    # Whether new rooms will be set to encrypted or not (based on presets).
+                    "io.element.e2ee_forced.public": self.e2ee_forced_public,
+                    "io.element.e2ee_forced.private": self.e2ee_forced_private,
+                    "io.element.e2ee_forced.trusted_private": self.e2ee_forced_trusted_private,
                 },
             },
         )