core: added plugins for PubSub et PEP (first drafts)

- plugin for XEP 0060, 0163 and 0107, based on Wokkel's pubsub
- XEP 0115 plugin has been fixed, so generateHash can be called when features have changed (can be usefull to filter PEP)

src/plugins/plugin_xep_0060.py

@@ -0,0 +1,94 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+"""
+SAT plugin for Publish-Subscribe (xep-0060)
+Copyright (C) 2009, 2010, 2011  Jérôme Poisson (goffi@goffi.org)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+
+from logging import debug, info, error
+from twisted.internet import protocol
+from twisted.words.protocols.jabber import client, jid
+from twisted.words.protocols.jabber import error as jab_error
+import twisted.internet.error
+
+from wokkel import disco, iwokkel, pubsub
+
+from zope.interface import implements
+
+PLUGIN_INFO = {
+"name": "Publish-Subscribe",
+"import_name": "XEP_0060",
+"type": "XEP",
+"protocols": ["XEP-0060"],
+"dependencies": [],
+"main": "XEP_0060",
+"handler": "yes",
+"description": _("""Implementation of PubSub Protocol""")
+}
+
+class XEP_0060():
+
+    def __init__(self, host):
+        info(_("PubSub plugin initialization"))
+        self.host = host
+        self.managedNodes=[]
+        self.clients={}
+
+    def getHandler(self, profile):
+        self.clients[profile] = SatPubSubClient(self.host, self)
+        return self.clients[profile]
+
+    def addManagedNode(self, node_name, callback):
+        """Add a handler for a namespace
+        @param namespace: NS of the handler (will appear in disco info)
+        @param callback: method to call when the handler is found
+        @param profile: profile which manage this handler"""
+        self.managedNodes.append((node_name, callback))
+
+
+class SatPubSubClient(pubsub.PubSubClient):
+    implements(disco.IDisco)
+
+    def __init__(self, host, parent_plugin):
+        self.host=host
+        self.parent_plugin = parent_plugin
+        pubsub.PubSubClient.__init__(self)
+
+    def connectionInitialized(self):
+        pubsub.PubSubClient.connectionInitialized(self)
+    
+    def itemsReceived(self, event):
+        for node in self.parent_plugin.managedNodes:
+            if event.nodeIdentifier == node[0]:
+                return node[1](event, self.parent.profile)
+
+    def deleteReceived(self, event):
+        import pdb
+        pdb.set_trace()
+
+    def purgeReceived(self, event):
+        import pdb
+        pdb.set_trace()
+
+    def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
+        _disco_info = []
+        self.host.trigger.point("PubSub Disco Info", _disco_info, self.parent.profile)
+        return _disco_info
+    
+    def getDiscoItems(self, requestor, target, nodeIdentifier=''):
+        return []
+