Error if attempting to set m.push_rules account data, per MSC4010. (#15555)

m.push_rules, like m.fully_read, is a special account data type that cannot
be set using the normal /account_data endpoint. Return an error instead
of allowing data that will not be used to be stored.

1 files changed, 5 insertions, 0 deletions

diff --git a/synapse/config/experimental.py b/synapse/config/experimental.py

index 514d87cb2c..7af6dbcd09 100644
--- a/synapse/config/experimental.py
+++ b/synapse/config/experimental.py
@@ -202,3 +202,8 @@ class ExperimentalConfig(Config):
 
         # MSC4009: E.164 Matrix IDs
         self.msc4009_e164_mxids = experimental.get("msc4009_e164_mxids", False)
+
+        # MSC4010: Do not allow setting m.push_rules account data.
+        self.msc4010_push_rules_account_data = experimental.get(
+            "msc4010_push_rules_account_data", False
+        )