1 files changed, 73 insertions, 0 deletions
diff --git a/slixmpp/plugins/xep_0256.py b/slixmpp/plugins/xep_0256.py
new file mode 100644
index 00000000..4ad4f0ea
--- /dev/null
+++ b/slixmpp/plugins/xep_0256.py
@@ -0,0 +1,73 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2012 Nathanael C. Fritz, Lance J.T. Stout
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+import logging
+
+from slixmpp import Presence
+from slixmpp.exceptions import XMPPError
+from slixmpp.plugins import BasePlugin, register_plugin
+from slixmpp.xmlstream import register_stanza_plugin
+
+from slixmpp.plugins.xep_0012 import stanza, LastActivity
+
+
+log = logging.getLogger(__name__)
+
+
+class XEP_0256(BasePlugin):
+
+    name = 'xep_0256'
+    description = 'XEP-0256: Last Activity in Presence'
+    dependencies = set(['xep_0012'])
+    stanza = stanza
+    default_config = {
+        'auto_last_activity': False
+    }
+
+    def plugin_init(self):
+        register_stanza_plugin(Presence, LastActivity)
+
+        self.xmpp.add_filter('out', self._initial_presence_activity)
+        self.xmpp.add_event_handler('connected', self._reset_presence_activity)
+
+        self._initial_presence = set()
+
+    def plugin_end(self):
+        self.xmpp.del_filter('out', self._initial_presence_activity)
+        self.xmpp.del_event_handler('connected', self._reset_presence_activity)
+
+    def _reset_presence_activity(self, e):
+        self._initial_presence = set()
+
+    def _initial_presence_activity(self, stanza):
+        if isinstance(stanza, Presence):
+            use_last_activity = False
+
+            if self.auto_last_activity and  stanza['show'] in ('xa', 'away'):
+                use_last_activity = True
+
+            if stanza['from'] not in self._initial_presence:
+                self._initial_presence.add(stanza['from'])
+                use_last_activity = True
+
+            if use_last_activity:
+                plugin = self.xmpp['xep_0012']
+                try:
+                    result = plugin.api['get_last_activity'](stanza['from'],
+                                                             None,
+                                                             stanza['to'])
+                    seconds = result['last_activity']['seconds']
+                except XMPPError:
+                    seconds = None
+
+                if seconds is not None:
+                    stanza['last_activity']['seconds'] = seconds
+        return stanza
+
+
+register_plugin(XEP_0256)