File

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−-- Prosody IM
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−-- Copyright (C) 2008-2010 Matthew Wild
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−-- Copyright (C) 2008-2010 Waqas Hussain
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−--
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−-- This project is MIT/X11 licensed. Please see the
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−-- COPYING file in the source package for more information.
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−--
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−
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−local st = require "util.stanza";
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−local is_contact_subscribed = require "core.rostermanager".is_contact_subscribed;
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−local jid_bare = require "util.jid".bare;
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−local jid_split = require "util.jid".split;
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−
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−module:add_feature("jabber:iq:last");
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−
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−local map = {};
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−
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−module:hook("pre-presence/bare", function(event)
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−	local stanza = event.stanza;
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−	if not(stanza.attr.to) and stanza.attr.type == "unavailable" then
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−		local t = os.time();
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−		local s = stanza:get_child_text("status");
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−		map[event.origin.username] = {s = s, t = t};
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−	end
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−end, 10);
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−
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−module:hook("iq-get/bare/jabber:iq:last:query", function(event)
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−	local origin, stanza = event.origin, event.stanza;
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−	local username = jid_split(stanza.attr.to) or origin.username;
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−	if not stanza.attr.to or is_contact_subscribed(username, module.host, jid_bare(stanza.attr.from)) then
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−		local seconds, text = "0", "";
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−		if map[username] then
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−			seconds = string.format("%d", os.difftime(os.time(), map[username].t));
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−			text = map[username].s;
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−		end
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−		origin.send(st.reply(stanza):tag('query', {xmlns='jabber:iq:last', seconds=seconds}):text(text));
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−	else
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−		origin.send(st.error_reply(stanza, 'auth', 'forbidden'));
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−	end
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−	return true;
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−end);
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−
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−module.save = function()
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−	return {map = map};
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−end
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−module.restore = function(data)
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−	map = data.map or {};
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−end
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−