mod_report_affiliations: Fix traceback a non-user is sending a presence For now we won’t touch their presence instead of emiting this traceback: error Traceback[s2s]: /usr/lib/prosody/core/rostermanager.lua:275: attempt to concatenate a nil value (local 'username') stack traceback: /usr/lib/prosody/core/rostermanager.lua:275: in function 'prosody.core.rostermanager.is_user_subscribed' ...ules/mod_report_affiliations/mod_report_affiliations.lua:116: in field '?' /usr/lib/prosody/util/events.lua:81: in function </usr/lib/prosody/util/events.lua:77> (...tail calls...) /usr/lib/prosody/core/stanza_router.lua:184: in upvalue 'core_post_stanza' /usr/lib/prosody/modules/mod_presence.lua:244: in function </usr/lib/prosody/modules/mod_presence.lua:231> (...tail calls...) /usr/lib/prosody/util/events.lua:81: in function </usr/lib/prosody/util/events.lua:77> (...tail calls...) /usr/lib/prosody/core/stanza_router.lua:188: in upvalue 'core_post_stanza' /usr/lib/prosody/core/stanza_router.lua:128: in upvalue 'core_process_stanza' /usr/lib/prosody/modules/mod_s2s.lua:818: in upvalue 'func' /usr/lib/prosody/util/async.lua:149: in function </usr/lib/prosody/util/async.lua:147>

local st = require "util.stanza";

module:hook("muc-disco#info", function(event)
	table.insert(event.form, { name = "muc#roomconfig_allowpm"; value = "moderators" });
end);

module:hook("muc-private-message", function(event)
	local stanza, room = event.stanza, event.room;
	local from_occupant = room:get_occupant_by_nick(stanza.attr.from);

	if from_occupant and from_occupant.role == "moderator" then
		return -- moderators may message anyone
	end

	local to_occupant = room:get_occupant_by_nick(stanza.attr.to)
	if to_occupant and to_occupant.role == "moderator" then
		return -- messaging moderators is ok
	end

	if to_occupant.bare_jid == from_occupant.bare_jid then
		return -- to yourself is okay, used by some clients to sync read state in public channels
	end

	room:route_to_occupant(from_occupant, st.error_reply(stanza, "cancel", "policy-violation", "Private messages are disabled", room.jid))
	return false;
end, 1);