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| author | Richard van der Hoff <richard@matrix.org> | 2018-05-01 18:14:18 +0100 |
|---|---|---|
| committer | Richard van der Hoff <richard@matrix.org> | 2018-05-01 18:14:18 +0100 |
| commit | d5eee5d601cb291bcd6eb409f818c0e27a1658b0 (patch) | |
| tree | 8c71771ba723609335feb16568fe0b540a33d451 /synapse/handlers | |
| parent | Miscellaneous fixes to python_dependencies (diff) | |
| parent | Apply some limits to depth to counter abuse (diff) | |
| download | synapse-d5eee5d601cb291bcd6eb409f818c0e27a1658b0.tar.xz | |
Merge commit '33f469b' into release-v0.28.1
Diffstat (limited to 'synapse/handlers')
| -rw-r--r-- | synapse/handlers/message.py | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py index 21628a8540..53beb2b9ab 100644 --- a/synapse/handlers/message.py +++ b/synapse/handlers/message.py @@ -16,7 +16,7 @@ from twisted.internet import defer, reactor from twisted.python.failure import Failure -from synapse.api.constants import EventTypes, Membership +from synapse.api.constants import EventTypes, Membership, MAX_DEPTH from synapse.api.errors import AuthError, Codes, SynapseError from synapse.crypto.event_signing import add_hashes_and_signatures from synapse.events.utils import serialize_event @@ -624,6 +624,10 @@ class EventCreationHandler(object): if prev_events_and_hashes: depth = max([d for _, _, d in prev_events_and_hashes]) + 1 + # we cap depth of generated events, to ensure that they are not + # rejected by other servers (and so that they can be persisted in + # the db) + depth = min(depth, MAX_DEPTH) else: depth = 1 |