mod_lastactivity: Initial commit.

diff --git a/plugins/mod_lastactivity.lua b/plugins/mod_lastactivity.lua
new file mode 100644 (file)
index 0000000..04f817c
--- /dev/null
+++ b/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);