3 files changed, 78 insertions, 0 deletions
diff --git a/slixmpp/features/feature_rosterver/__init__.py b/slixmpp/features/feature_rosterver/__init__.py
new file mode 100644
index 00000000..d338b584
--- /dev/null
+++ b/slixmpp/features/feature_rosterver/__init__.py
@@ -0,0 +1,19 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2012  Nathanael C. Fritz
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+from slixmpp.plugins.base import register_plugin
+
+from slixmpp.features.feature_rosterver.rosterver import FeatureRosterVer
+from slixmpp.features.feature_rosterver.stanza import RosterVer
+
+
+register_plugin(FeatureRosterVer)
+
+
+# Retain some backwards compatibility
+feature_rosterver = FeatureRosterVer
diff --git a/slixmpp/features/feature_rosterver/rosterver.py b/slixmpp/features/feature_rosterver/rosterver.py
new file mode 100644
index 00000000..2c2c8c84
--- /dev/null
+++ b/slixmpp/features/feature_rosterver/rosterver.py
@@ -0,0 +1,42 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2012  Nathanael C. Fritz
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+import logging
+
+from slixmpp.stanza import StreamFeatures
+from slixmpp.features.feature_rosterver import stanza
+from slixmpp.xmlstream import register_stanza_plugin
+from slixmpp.plugins.base import BasePlugin
+
+
+log = logging.getLogger(__name__)
+
+
+class FeatureRosterVer(BasePlugin):
+
+    name = 'feature_rosterver'
+    description = 'RFC 6121: Stream Feature: Roster Versioning'
+    dependences = set()
+    stanza = stanza
+
+    def plugin_init(self):
+        self.xmpp.register_feature('rosterver',
+                self._handle_rosterver,
+                restart=False,
+                order=9000)
+
+        register_stanza_plugin(StreamFeatures, stanza.RosterVer)
+
+    def _handle_rosterver(self, features):
+        """Enable using roster versioning.
+
+        Arguments:
+            features -- The stream features stanza.
+        """
+        log.debug("Enabling roster versioning.")
+        self.xmpp.features.add('rosterver')
diff --git a/slixmpp/features/feature_rosterver/stanza.py b/slixmpp/features/feature_rosterver/stanza.py
new file mode 100644
index 00000000..c9a4a2da
--- /dev/null
+++ b/slixmpp/features/feature_rosterver/stanza.py
@@ -0,0 +1,17 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2012  Nathanael C. Fritz
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+from slixmpp.xmlstream import ElementBase
+
+
+class RosterVer(ElementBase):
+
+    name = 'ver'
+    namespace = 'urn:xmpp:features:rosterver'
+    interfaces = set()
+    plugin_attrib = 'rosterver'