From a017dbf4a47430f37951fba69e3be8da05667b4a Mon Sep 17 00:00:00 2001
From: Victor Seva <vseva@sipwise.com>
Date: Wed, 18 Feb 2015 11:00:52 +0100
Subject: [PATCH] MT#11583 add our own lastactivity module

mod_lastactivity is not doing the work. Implemented as last activity
is last change of presence or last message sent

MT#11387 while at it move ngcp-system-tools Pre-Depends
to Depends to make piuparts happy

Change-Id: Ic2f29017c27b3ef3e4f4f9377f17d050de218b90
---
 debian/control                       |  3 +-
 debian/ngcp-prosody-modules.install  |  2 +-
 plugins/mod_sipwise_lastactivity.lua | 68 ++++++++++++++++++++++++++++
 3 files changed, 71 insertions(+), 2 deletions(-)
 create mode 100644 plugins/mod_sipwise_lastactivity.lua

diff --git a/debian/control b/debian/control
index 4c85363..c0a4459 100644
--- a/debian/control
+++ b/debian/control
@@ -8,13 +8,13 @@ Homepage: http://sipwise.com/
 
 Package: ngcp-prosody-modules
 Architecture: amd64
-Pre-Depends: ngcp-system-tools
 Depends: lua-bitop,
          lua-dbi-common,
          lua-dbi-mysql,
          lua-redis,
          lua-rex-pcre,
          lua-sec,
+         ngcp-system-tools-ce | ngcp-system-tools,
          ${misc:Depends},
          ${shlibs:Depends}
 Description: ngcp modules for the prosody Jabber/XMPP server
@@ -37,3 +37,4 @@ Description: ngcp modules for the prosody Jabber/XMPP server
   * mod_sipwise_redis_sessions: keep server's session info on redis
   * mod_sipwise_pushd: push notification to mobile users
   * mod_log_auth: logs IP address in a failed authentication attempt
+  * mod_sipwise_lastactivity: XEP-0012
diff --git a/debian/ngcp-prosody-modules.install b/debian/ngcp-prosody-modules.install
index 1413ebd..53a26e9 100644
--- a/debian/ngcp-prosody-modules.install
+++ b/debian/ngcp-prosody-modules.install
@@ -1,3 +1,3 @@
+core/* /usr/lib/prosody/core/
 plugins/* /usr/lib/prosody/modules/
 util/* /usr/lib/prosody/util/
-core/* /usr/lib/prosody/core/
diff --git a/plugins/mod_sipwise_lastactivity.lua b/plugins/mod_sipwise_lastactivity.lua
new file mode 100644
index 0000000..a7157b0
--- /dev/null
+++ b/plugins/mod_sipwise_lastactivity.lua
@@ -0,0 +1,68 @@
+-- Prosody IM
+-- Copyright (C) 2008-2010 Matthew Wild
+-- Copyright (C) 2008-2010 Waqas Hussain
+-- Copyright (C) 2015 Sipwise GmbH <development@sipwise.com>
+--
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+-- TODO: permanent storage
+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;
+local sessions = module:shared("sessions");
+
+module:add_feature("jabber:iq:last");
+
+local map = {};
+
+-- lastactivity: any change of presence
+module:hook("pre-presence/bare", function(event)
+	local stanza = event.stanza;
+	if not(stanza.attr.to) 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};
+		module:log("debug", "change of presence:%s from:%s",
+			s, event.origin.username)
+	end
+end, 10);
+
+local function msg_handler(event)
+	local origin, stanza = event.origin, event.stanza;
+	local username = jid_split(stanza.attr.from) or origin.username;
+	map[username] = {s = "online", t = os.time()};
+	module:log("debug", "%s from: %s", stanza.attr.type, username);
+end
+
+-- lastactivity: any message sent
+module:hook("pre-message/bare", msg_handler);
+module:hook("pre-message/full", msg_handler);
+
+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 not stanza.attr.to or is_contact_subscribed(username, module.host, jid_bare(stanza.attr.from)) then
+			local seconds, text = nil, "";
+			if not sessions[origin.conn] and 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);
+
+module.save = function()
+	return {map = map};
+end
+module.restore = function(data)
+	map = data.map or {};
+end