plugins/mod_lastactivity.lua

   1 -- Prosody IM
   2 -- Copyright (C) 2008-2010 Matthew Wild
   3 -- Copyright (C) 2008-2010 Waqas Hussain
   4 --
   5 -- This project is MIT/X11 licensed. Please see the
   6 -- COPYING file in the source package for more information.
   7 --
   8
   9 local st = require "util.stanza";
  10 local is_contact_subscribed = require "core.rostermanager".is_contact_subscribed;
  11 local jid_bare = require "util.jid".bare;
  12 local jid_split = require "util.jid".split;
  13
  14 module:add_feature("jabber:iq:last");
  15
  16 local map = {};
  17
  18 module:hook("pre-presence/bare", function(event)
  19         local stanza = event.stanza;
  20         if not(stanza.attr.to) and stanza.attr.type == "unavailable" then
  21                 local t = os.time();
  22                 local s = stanza:get_child_text("status");
  23                 map[event.origin.username] = {s = s, t = t};
  24         end
  25 end, 10);
  26
  27 module:hook("iq-get/bare/jabber:iq:last:query", function(event)
  28         local origin, stanza = event.origin, event.stanza;
  29         local username = jid_split(stanza.attr.to) or origin.username;
  30         if not stanza.attr.to or is_contact_subscribed(username, module.host, jid_bare(stanza.attr.from)) then
  31                 local seconds, text = "0", "";
  32                 if map[username] then
  33                         seconds = tostring(os.difftime(os.time(), map[username].t));
  34                         text = map[username].s;
  35                 end
  36                 origin.send(st.reply(stanza):tag('query', {xmlns='jabber:iq:last', seconds=seconds}):text(text));
  37         else
  38                 origin.send(st.error_reply(stanza, 'auth', 'forbidden'));
  39         end
  40         return true;
  41 end);
  42
  43 module.save = function()
  44         return {map = map};
  45 end
  46 module.restore = function(data)
  47         map = data.map or {};
  48 end
  49