MSC4108 implementation (#17056)

Co-authored-by: Hugh Nimmo-Smith <hughns@element.io>
Co-authored-by: Hugh Nimmo-Smith <hughns@users.noreply.github.com>
Co-authored-by: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>

2 files changed, 23 insertions, 2 deletions

diff --git a/synapse/rest/client/rendezvous.py b/synapse/rest/client/rendezvous.py
index ed06a29987..143f057651 100644
--- a/synapse/rest/client/rendezvous.py
+++ b/synapse/rest/client/rendezvous.py
@@ -97,9 +97,25 @@ class MSC4108DelegationRendezvousServlet(RestServlet):
         )
 
 
+class MSC4108RendezvousServlet(RestServlet):
+    PATTERNS = client_patterns(
+        "/org.matrix.msc4108/rendezvous$", releases=[], v1=False, unstable=True
+    )
+
+    def __init__(self, hs: "HomeServer") -> None:
+        super().__init__()
+        self._handler = hs.get_rendezvous_handler()
+
+    def on_POST(self, request: SynapseRequest) -> None:
+        self._handler.handle_post(request)
+
+
 def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
     if hs.config.experimental.msc3886_endpoint is not None:
         MSC3886RendezvousServlet(hs).register(http_server)
 
+    if hs.config.experimental.msc4108_enabled:
+        MSC4108RendezvousServlet(hs).register(http_server)
+
     if hs.config.experimental.msc4108_delegation_endpoint is not None:
         MSC4108DelegationRendezvousServlet(hs).register(http_server)
diff --git a/synapse/rest/client/versions.py b/synapse/rest/client/versions.py
index 638d4c45ae..fa453a3b02 100644
--- a/synapse/rest/client/versions.py
+++ b/synapse/rest/client/versions.py
@@ -141,8 +141,13 @@ class VersionsRestServlet(RestServlet):
                     # Allows clients to handle push for encrypted events.
                     "org.matrix.msc4028": self.config.experimental.msc4028_push_encrypted_events,
                     # MSC4108: Mechanism to allow OIDC sign in and E2EE set up via QR code
-                    "org.matrix.msc4108": self.config.experimental.msc4108_delegation_endpoint
-                    is not None,
+                    "org.matrix.msc4108": (
+                        self.config.experimental.msc4108_enabled
+                        or (
+                            self.config.experimental.msc4108_delegation_endpoint
+                            is not None
+                        )
+                    ),
                 },
             },
         )