From 29ffd680bf0d0bf50383ad23404b348bf9cf90aa Mon Sep 17 00:00:00 2001 From: JohannesKleine Date: Mon, 1 Nov 2021 11:40:41 +0100 Subject: [PATCH] Stop synapse from saving messages in device_inbox for hidden devices. (#10097) Co-authored-by: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com> --- changelog.d/10097.bugfix | 1 + synapse/storage/databases/main/deviceinbox.py | 8 ++++++-- 2 files changed, 7 insertions(+), 2 deletions(-) create mode 100644 changelog.d/10097.bugfix diff --git a/changelog.d/10097.bugfix b/changelog.d/10097.bugfix new file mode 100644 index 000000000000..5d3d9587c22d --- /dev/null +++ b/changelog.d/10097.bugfix @@ -0,0 +1 @@ +Fix a long-standing bug which allowed hidden devices to receive to-device messages, resulting in unnecessary database bloat. diff --git a/synapse/storage/databases/main/deviceinbox.py b/synapse/storage/databases/main/deviceinbox.py index d03b5e5a7dd3..25e9c1efe12b 100644 --- a/synapse/storage/databases/main/deviceinbox.py +++ b/synapse/storage/databases/main/deviceinbox.py @@ -489,10 +489,12 @@ def _add_messages_to_local_device_inbox_txn( devices = list(messages_by_device.keys()) if len(devices) == 1 and devices[0] == "*": # Handle wildcard device_ids. + # We exclude hidden devices (such as cross-signing keys) here as they are + # not expected to receive to-device messages. devices = self.db_pool.simple_select_onecol_txn( txn, table="devices", - keyvalues={"user_id": user_id}, + keyvalues={"user_id": user_id, "hidden": False}, retcol="device_id", ) @@ -505,10 +507,12 @@ def _add_messages_to_local_device_inbox_txn( if not devices: continue + # We exclude hidden devices (such as cross-signing keys) here as they are + # not expected to receive to-device messages. rows = self.db_pool.simple_select_many_txn( txn, table="devices", - keyvalues={"user_id": user_id}, + keyvalues={"user_id": user_id, "hidden": False}, column="device_id", iterable=devices, retcols=("device_id",),