1/* 2 * libjingle 3 * Copyright 2004--2011, Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28#ifndef TALK_XMPP_PUBSUB_TASK_H_ 29#define TALK_XMPP_PUBSUB_TASK_H_ 30 31#include <map> 32#include <string> 33#include "webrtc/libjingle/xmllite/xmlelement.h" 34#include "talk/xmpp/jid.h" 35#include "talk/xmpp/xmpptask.h" 36 37namespace buzz { 38 39// Base class to help write pubsub tasks. 40// In ProcessStart call SubscribeNode with namespaces of interest along with 41// NodeHandlers. 42// When pubsub notifications arrive and matches the namespace, the NodeHandlers 43// will be called back. 44class PubsubTask : public buzz::XmppTask { 45 public: 46 virtual ~PubsubTask(); 47 48 protected: 49 typedef void (PubsubTask::*NodeHandler)(const buzz::XmlElement* node); 50 51 PubsubTask(XmppTaskParentInterface* parent, const buzz::Jid& pubsub_node_jid); 52 53 virtual bool HandleStanza(const buzz::XmlElement* stanza); 54 virtual int ProcessResponse(); 55 56 bool SubscribeToNode(const std::string& pubsub_node, NodeHandler handler); 57 void UnsubscribeFromNode(const std::string& pubsub_node); 58 59 // Called when there is an error. Derived class can do what it needs to. 60 virtual void OnPubsubError(const buzz::XmlElement* error_stanza); 61 62 private: 63 typedef std::map<std::string, NodeHandler> NodeSubscriptions; 64 65 void HandlePubsubIqGetResponse(const buzz::XmlElement* pubsub_iq_response); 66 void HandlePubsubEventMessage(const buzz::XmlElement* pubsub_event_message); 67 void HandlePubsubItems(const buzz::XmlElement* items); 68 69 buzz::Jid pubsub_node_jid_; 70 NodeSubscriptions subscribed_nodes_; 71}; 72 73} // namespace buzz 74 75#endif // TALK_XMPP_PUBSUB_TASK_H_ 76