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/*
* libjingle
* Copyright 2004--2005, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _XMPPCLIENT_H_
#define _XMPPCLIENT_H_
#include <string>
#include "talk/base/basicdefs.h"
#include "talk/base/sigslot.h"
#include "talk/xmpp/xmppengine.h"
#include "talk/xmpp/asyncsocket.h"
#include "talk/xmpp/xmppclientsettings.h"
#include "talk/base/task.h"
namespace buzz {
class XmppTask;
class PreXmppAuth;
class SaslHandler;
class CaptchaChallenge;
// Just some non-colliding number. Could have picked "1".
#define XMPP_CLIENT_TASK_CODE 0x366c1e47
/////////////////////////////////////////////////////////////////////
//
// XMPPCLIENT
//
/////////////////////////////////////////////////////////////////////
//
// See Task first. XmppClient is a parent task for XmppTasks.
//
// XmppClient is a task which is designed to be the parent task for
// all tasks that depend on a single Xmpp connection. If you want to,
// for example, listen for subscription requests forever, then your
// listener should be a task that is a child of the XmppClient that owns
// the connection you are using. XmppClient has all the utility methods
// that basically drill through to XmppEngine.
//
// XmppClient is just a wrapper for XmppEngine, and if I were writing it
// all over again, I would make XmppClient == XmppEngine. Why?
// XmppEngine needs tasks too, for example it has an XmppLoginTask which
// should just be the same kind of Task instead of an XmppEngine specific
// thing. It would help do certain things like GAIA auth cleaner.
//
/////////////////////////////////////////////////////////////////////
class XmppClient : public talk_base::Task, public sigslot::has_slots<>
{
public:
XmppClient(talk_base::Task * parent);
~XmppClient();
XmppReturnStatus Connect(const XmppClientSettings & settings,
const std::string & lang,
AsyncSocket * socket,
PreXmppAuth * preauth,
SaslHandler * sasl_handler);
virtual talk_base::Task* GetParent(int code);
virtual int ProcessStart();
virtual int ProcessResponse();
XmppReturnStatus Disconnect();
const Jid & jid();
sigslot::signal1<XmppEngine::State> SignalStateChange;
XmppEngine::State GetState();
XmppEngine::Error GetError(int *subcode);
// When there is a <stream:error> stanza, return the stanza
// so that they can be handled.
const XmlElement *GetStreamError();
// When there is an authentication error, we may have captcha info
// that the user can use to unlock their account
CaptchaChallenge GetCaptchaChallenge();
// When authentication is successful, this returns the service cookie
// (if we used GAIA authentication)
std::string GetAuthCookie();
std::string NextId();
XmppReturnStatus SendStanza(const XmlElement *stanza);
XmppReturnStatus SendRaw(const std::string & text);
XmppReturnStatus SendStanzaError(const XmlElement * pelOriginal,
XmppStanzaError code,
const std::string & text);
XmppEngine* engine();
sigslot::signal2<const char *, int> SignalLogInput;
sigslot::signal2<const char *, int> SignalLogOutput;
private:
friend class XmppTask;
void OnAuthDone();
// managed tasks and dispatching
void AddXmppTask(XmppTask *, XmppEngine::HandlerLevel);
void RemoveXmppTask(XmppTask *);
sigslot::signal0<> SignalDisconnected;
private:
// Internal state management
enum {
STATE_PRE_XMPP_LOGIN = STATE_NEXT,
STATE_START_XMPP_LOGIN = STATE_NEXT + 1,
};
int Process(int state) {
switch (state) {
case STATE_PRE_XMPP_LOGIN: return ProcessCookieLogin();
case STATE_START_XMPP_LOGIN: return ProcessStartXmppLogin();
default: return Task::Process(state);
}
}
std::string GetStateName(int state) const {
switch (state) {
case STATE_PRE_XMPP_LOGIN: return "PRE_XMPP_LOGIN";
case STATE_START_XMPP_LOGIN: return "START_XMPP_LOGIN";
default: return Task::GetStateName(state);
}
}
int ProcessCookieLogin();
int ProcessStartXmppLogin();
void EnsureClosed();
class Private;
friend class Private;
scoped_ptr<Private> d_;
bool delivering_signal_;
bool valid_;
};
}
#endif
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