Allow setting publishing permissions for all users

[nickvergessen]

• Add API endpoint to modify permissions for all attendees
• Add API endpoint to set permissions for the conversation or the call
• Add docs
• Add unit tests
• Add integration tests
• Add events so updates trigger via HPB and internal signaling
• ❓ Should we do a similar enhancement to setAttendeePermissions() which currently only allows to "set" instead of +/- a single permission?
• Respect the ignore-lobby permission Waiting room to individually admit conversation participants #5394
  • ❓ What should happen with people that already joined and get "ignore-lobby" permission removed, are they kicked, or allowed to stay? Tendency is kicking makes lot's of things easier on technical level.
• Store (default) permissions for conversations (so "start call" can be copied for new users etc.)
• Deduplicate Attendee::PUBLISHING_PERMISSIONS_*
• Requires Support separate permissions for publishing audio / video. strukturag/nextcloud-spreed-signaling#157

Fix #931
Fix #5394

The API allows to … a single or multiple permissions:

• Add
• Remove
• Set

For either all participants or excluding moderators, guest moderators and owners.

I think we should do a similar enhancement to setAttendeePublishingPermissions which currently only allows to "set" instead of +/- a single permission.

[nickvergessen]

Current plan:

I think we should do a similar enhancement to setAttendeePublishingPermissions which currently only allows to "set" instead of +/- a single permission.

Yes.

Additionally to the already existing code, we also add an endpoint that allows to set the default permissions for:

	public const PERMISSION_LOBBY = 1;
	public const PERMISSION_PUBLISH_AUDIO = 2;
	public const PERMISSION_PUBLISH_VIDEO = 4;
	public const PERMISSION_PUBLISH_SCREEN = 8;
	public const PERMISSION_CALL_START = 16;

Also the start call function gets extended with a parameter that can be used to set the permissions for this call. This will allow a moderator to start a meeting although in general the conversation would be free for all.

For this the Start/Join buttons are extended for moderators so they see:

• Start call / Join call
• Start call with only moderators publishing
• Start call with only me speaking (moderators can start to publish but start disabled by default)

Similarly the Leave button is being extended to:

• Leave call
• End meeting for everyone

[marcoambrosini]

🐘