mod_lastactivity: Initial commit.

plugins/mod_lastactivity.lua

@@ -0,0 +1,44 @@
+-- Prosody IM
+-- Copyright (C) 2008-2009 Matthew Wild
+-- Copyright (C) 2008-2009 Waqas Hussain
+-- 
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+local st = require "util.stanza";
+local is_contact_subscribed = require "core.rostermanager".is_contact_subscribed;
+local jid_bare = require "util.jid".bare;
+local jid_split = require "util.jid".split;
+
+module:add_feature("jabber:iq:last");
+
+local map = {};
+
+module:hook("pre-presence/bare", function(event)
+	local stanza = event.stanza;
+	if not(stanza.attr.to) and stanza.attr.type == "unavailable" then
+		local t = os.time();
+		local s = stanza:child_with_name("status");
+		s = s and #s.tags == 0 and s[1] or "";
+		map[event.origin.username] = {s = s, t = t};
+	end
+end);
+
+module:hook("iq/bare/jabber:iq:last:query", function(event)
+	local origin, stanza = event.origin, event.stanza;
+	if stanza.attr.type == "get" then
+		local username = jid_split(stanza.attr.to) or origin.username;
+		if is_contact_subscribed(username, module.host, jid_bare(stanza.attr.from)) then
+			local seconds, text = "0", "";
+			if map[username] then
+				seconds = tostring(os.difftime(os.time(), map[username].t));
+				text = map[username].s;
+			end
+			origin.send(st.reply(stanza):tag('query', {xmlns='jabber:iq:last', seconds=seconds}):text(text));
+		else
+			origin.send(st.error_reply(stanza, 'auth', 'forbidden'));
+		end
+		return true;
+	end
+end);