Remove invited members when invite sender is banned

[TheArcaneBrony]

It would be nice if active invites could get retracted when a user gets banned. This would aid with invite spam attacks.

For clarity: I mean invites to the room they got banned from. Cleaning up DM invites would need way more support.

[Gnuxie]

So you mean draupnir should reject invitations from rooms that draupnir gets banned from?

Or to a room that draupnir has banned?

Or from a user that draupnir has banned?

[TheArcaneBrony]

I meant, imagine a spammer joins a room, and they invite 100+ random users, draupnir should retract those pending invites when the sender gets banned.

[Gnuxie]

How can draupnir do that?

[TheArcaneBrony]

basic flowchart of how this could be achieved: on room ban:

• fetch state
• filter by type == m.room.member && content.membership == invite
  • for each hit:
    • kick member

[Gnuxie]

Ok, I see what you mean now.

[Gnuxie]

We did this 🎉