Track users when joining encrypted rooms #251
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Users are only tracked when the bot user is already in the room when encryption is enabled or if the member status of the user changes in an already encrypted room. This leads to megolm sessions which don't include all devices when a bot joins an encrypted room and existing users can't decrypt messages by the bot. Before this change, only in rooms created by the bot could all other users decrypt messages from the bot. Now already present users will also be tracked and receive the session keys. Signed-off-by: Fabian Möller <[email protected]>
turt2live
approved these changes
Aug 3, 2022
|
While working on the tests for this, I noticed another error related to user tracking: #254 I will update this PR once the other issue is fixed. |
turt2live
approved these changes
Sep 21, 2022
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Users are only tracked when the bot user is already in the room when encryption is enabled or if the member status of the user changes in an already encrypted room.
This leads to megolm sessions which don't include all devices when a bot joins an encrypted room and existing users can't decrypt messages by the bot.
Before this change, only in rooms created by the bot could all other users decrypt messages from the bot.
Now already present users will also be tracked and receive the session keys.
A simple appservice reproducing the error, which is based on the
encryption_appservice.tsexample, can be found here (also contains docker-compose file for synapse and co):https://github.com/B4dM4n/hookkshot-e2ee-test/blob/main/enctest/src/index.ts
Steps to reproduce:
@encbot:localto encrypted DM/room (inviting user is not tracked by the bot)!pingto bot -> unable to decrypt error!inviteto bot and join room (invited user is now tracked)!pingto room ->Pongcan be decryptedChecklist