From 6d68706326e3248e167b92289fd695ed8b11cec7 Mon Sep 17 00:00:00 2001
From: Lance Stout <lancestout@gmail.com>
Date: Mon, 25 Oct 2010 20:37:02 -0400
Subject: [PATCH] Added XEP-0012 Last Activity plugin.

Contributed by Cesar Alcalde.
---
 sleekxmpp/plugins/__init__.py |   5 +-
 sleekxmpp/plugins/xep_0012.py | 115 ++++++++++++++++++++++++++++++++++
 2 files changed, 118 insertions(+), 2 deletions(-)
 create mode 100644 sleekxmpp/plugins/xep_0012.py

diff --git a/sleekxmpp/plugins/__init__.py b/sleekxmpp/plugins/__init__.py
index 36fa177..7d4d981 100644
--- a/sleekxmpp/plugins/__init__.py
+++ b/sleekxmpp/plugins/__init__.py
@@ -5,5 +5,6 @@
 
     See the file LICENSE for copying permission.
 """
-__all__ = ['xep_0004', 'xep_0030', 'xep_0033', 'xep_0045', 'xep_0050',
-'xep_0078', 'xep_0085', 'xep_0092', 'xep_0199', 'gmail_notify', 'xep_0060']
+__all__ = ['xep_0004', 'xep_0012', 'xep_0030', 'xep_0033', 'xep_0045',
+           'xep_0050', 'xep_0078', 'xep_0085', 'xep_0092', 'xep_0199',
+           'gmail_notify', 'xep_0060']
diff --git a/sleekxmpp/plugins/xep_0012.py b/sleekxmpp/plugins/xep_0012.py
new file mode 100644
index 0000000..45ca8a0
--- /dev/null
+++ b/sleekxmpp/plugins/xep_0012.py
@@ -0,0 +1,115 @@
+"""
+    SleekXMPP: The Sleek XMPP Library
+    Copyright (C) 2010 Nathanael C. Fritz
+    This file is part of SleekXMPP.
+
+    See the file LICENSE for copying permission.
+"""
+
+from datetime import datetime
+import logging
+
+from . import base
+from .. stanza.iq import Iq
+from .. xmlstream.handler.callback import Callback
+from .. xmlstream.matcher.xpath import MatchXPath
+from .. xmlstream import ElementBase, ET, JID, register_stanza_plugin
+
+
+class LastActivity(ElementBase):
+    name = 'query'
+    namespace = 'jabber:iq:last'
+    plugin_attrib = 'last_activity'
+    interfaces = set(('seconds', 'status'))
+
+    def get_seconds(self):
+        return int(self._get_attr('seconds'))
+
+    def set_seconds(self, value):
+        self._set_attr('seconds', str(value))
+
+    def get_status(self):
+        return self.xml.text
+
+    def set_status(self, value):
+        self.xml.text = str(value)
+
+    def del_status(self):
+        self.xml.text = ''
+
+class xep_0012(base.base_plugin):
+    """
+    XEP-0012 Last Activity
+    """
+    def plugin_init(self):
+        self.description = "Last Activity"
+        self.xep = "0012"
+
+        self.xmpp.registerHandler(
+            Callback('Last Activity',
+                 MatchXPath('{%s}iq/{%s}query' % (self.xmpp.default_ns,
+                                  LastActivity.namespace)),
+                 self.handle_last_activity_query))
+        register_stanza_plugin(Iq, LastActivity)
+
+        self.xmpp.add_event_handler('last_activity_request', self.handle_last_activity)
+
+
+    def post_init(self):
+        base.base_plugin.post_init(self)
+        if self.xmpp.is_component:
+            # We are a component, so we track the uptime
+            self.xmpp.add_event_handler("session_start", self._reset_uptime)
+            self._start_datetime = datetime.now()
+        self.xmpp.plugin['xep_0030'].add_feature('jabber:iq:last')
+
+    def _reset_uptime(self, event):
+        self._start_datetime = datetime.now()
+
+    def handle_last_activity_query(self, iq):
+        if iq['type'] == 'get':
+            logging.debug("Last activity requested by %s" % iq['from'])
+            self.xmpp.event('last_activity_request', iq)
+        elif iq['type'] == 'result':
+            logging.debug("Last activity result from %s" % iq['from'])
+            self.xmpp.event('last_activity', iq)
+
+    def handle_last_activity(self, iq):
+        jid = iq['from']
+
+        if self.xmpp.is_component:
+            # Send the uptime
+            result = LastActivity()
+            td = (datetime.now() - self._start_datetime)
+            result['seconds'] = td.seconds + td.days * 24 * 3600
+            reply = iq.reply().setPayload(result.xml).send()
+        else:
+            barejid = JID(jid).bare
+            if barejid in self.xmpp.roster and ( self.xmpp.roster[barejid]['subscription'] in ('from', 'both') or
+                                                 barejid == self.xmpp.boundjid.bare ):
+                # We don't know how to calculate it
+                iq.reply().error().setPayload(iq['last_activity'].xml)
+                iq['error']['code'] = '503'
+                iq['error']['type'] = 'cancel'
+                iq['error']['condition'] = 'service-unavailable'
+                iq.send()
+            else:
+                iq.reply().error().setPayload(iq['last_activity'].xml)
+                iq['error']['code'] = '403'
+                iq['error']['type'] = 'auth'
+                iq['error']['condition'] = 'forbidden'
+                iq.send()
+
+    def get_last_activity(self, jid):
+        """Query the LastActivity of jid and return it in seconds"""
+        iq = self.xmpp.makeIqGet()
+        query = LastActivity()
+        iq.append(query.xml)
+        iq.attrib['to'] = jid
+        iq.attrib['from'] = self.xmpp.boundjid.full
+        id = iq.get('id')
+        result = iq.send()
+        if result and result is not None and result.get('type', 'error') != 'error':
+            return result['last_activity']['seconds']
+        else:
+            return False