view mod_muc_notifications/mod_muc_notifications.lua @ 5406:b86d80e21c60

mod_http_oauth2: Validate consistency of response and grant types Ensure that these correlated fields make sense per RFC 7591 ยง 2.1, even though we currently only check the response type during authorization. This could probably all be deleted if (when!) we remove the implicit grant, since then these things don't make any sense anymore.
author Kim Alvefur <zash@zash.se>
date Tue, 02 May 2023 16:34:31 +0200
parents ef752c5115f7
children
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-- mod_muc_notifications
--
-- Copyright (C) 2019 Marcos de Vera Piquero <marcos.devera@quobis.com>
--
-- This file is MIT/X11 licensed.
--
-- A module to notify non-present members of messages in a group chat
--

local id = require"util.id"
local st = require"util.stanza"

local use_invite = module:get_option_boolean("muc_notification_invite", false)

-- Given a stanza, compute if it qualifies as important (notifiable)
-- return true for message stanzas with non-empty body
-- Should probably use something similar to muc-message-is-historic event
local function is_important(stanza)
	local body = stanza:find("body#")
	return body and #body
end

local function handle_muc_message(event)
	-- event.room and event.stanza are available
	local room = event.room
	local stanza = event.stanza
	for jid, aff in pairs(room._affiliations) do
		if aff ~= "outcast" then
			local is_occupant = false
			for _, occupant in pairs(room._occupants) do
				if occupant.bare_jid == jid then
					is_occupant = true
					break
				end
			end
			if not is_occupant and is_important(stanza) then
				-- send notification to jid
				local attrs = {
					to = jid,
					id = id.short(),
					from = room.jid,
				}
				local not_attrs = {
					xmlns = "http://quobis.com/xmpp/muc#push",
					jid = room.jid,
				}
				local reason = "You have messages in group chat "..(room:get_name() or room.jid)
				local notification = st.message(attrs)
					:body(reason):up()
					:tag("notification", not_attrs):up()
					:tag("no-store", {xmlns = "urn:xmpp:hints"})
				local invite = st.message(attrs):tag("x", {xmlns = "http://jabber.org/protocol/muc#user"})
					:tag("invite", {from = stanza.attr.from})
					:tag("reason"):text(reason):up():up():up()
					:tag("notification", not_attrs):up()
					:tag("no-store", {xmlns = "urn:xmpp:hints"})
				module:log("debug", "notifying with %s", tostring(use_invite and invite or notification))
				module:send(use_invite and invite or notification)
				module:log("debug", "sent notification of MUC message %s", use_invite and invite or notification)
			end
		end
	end
end

module:hook("muc-broadcast-message", handle_muc_message)

module:log("debug", "Module loaded")