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| -rw-r--r-- | docs/specification.rst | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/docs/specification.rst b/docs/specification.rst index a44c7c4882..23e385688e 100644 --- a/docs/specification.rst +++ b/docs/specification.rst @@ -778,6 +778,23 @@ There are several APIs provided to ``GET`` events for a room: Example: TODO +Redactions +---------- +Since events are extensible it is possible for malicious users and/or servers to add +keys that are, for example offensive or illegal. Since some events cannot be simply +deleted, e.g. membership events, we instead 'redact' events. This involves removing +all keys from an event that are not required by the protocol. This stripped down +event is thereafter returned anytime a client or remote server requests it. + +Events that have been redacted include a ``redacted_because`` key whose value is the +event that caused it to be redacted, which may include a reason. + +Redacting an event cannot be undone, allowing server owners to delete the offending +content from the databases. + +Currently, only room admins can redact events by sending a ``m.room.redacted`` event, +but server admins also need to be able to redact events by a similar mechanism. + Room Events =========== |