Add flags to /versions about whether new rooms are encrypted by defau…

…lt. (#8343)

changelog.d/8343.feature

@@ -0,0 +1 @@
+Add flags to the `/versions` endpoint that includes whether new rooms default to using E2EE.

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 @@ def __init__(self, hs):
  super(VersionsRestServlet, self).__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 @@ def on_GET(self, request):
  "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,
  },
  },
  )