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      1 /*
      2  * libjingle
      3  * Copyright 2004--2005, 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_LOGINTASK_H_
     29 #define TALK_XMPP_LOGINTASK_H_
     30 
     31 #include <string>
     32 #include <vector>
     33 
     34 #include "talk/base/logging.h"
     35 #include "talk/base/scoped_ptr.h"
     36 #include "talk/xmpp/jid.h"
     37 #include "talk/xmpp/xmppengine.h"
     38 
     39 namespace buzz {
     40 
     41 class XmlElement;
     42 class XmppEngineImpl;
     43 class SaslMechanism;
     44 
     45 
     46 // TODO: Rename to LoginTask.
     47 class XmppLoginTask {
     48 
     49 public:
     50   XmppLoginTask(XmppEngineImpl *pctx);
     51   ~XmppLoginTask();
     52 
     53   bool IsDone()
     54     { return state_ == LOGINSTATE_DONE; }
     55   void IncomingStanza(const XmlElement * element, bool isStart);
     56   void OutgoingStanza(const XmlElement *element);
     57   void set_allow_non_google_login(bool b)
     58     { allowNonGoogleLogin_ = b; }
     59 
     60 private:
     61   enum LoginTaskState {
     62     LOGINSTATE_INIT = 0,
     63     LOGINSTATE_STREAMSTART_SENT,
     64     LOGINSTATE_STARTED_XMPP,
     65     LOGINSTATE_TLS_INIT,
     66     LOGINSTATE_AUTH_INIT,
     67     LOGINSTATE_BIND_INIT,
     68     LOGINSTATE_TLS_REQUESTED,
     69     LOGINSTATE_SASL_RUNNING,
     70     LOGINSTATE_BIND_REQUESTED,
     71     LOGINSTATE_SESSION_REQUESTED,
     72     LOGINSTATE_DONE,
     73   };
     74 
     75   const XmlElement * NextStanza();
     76   bool Advance();
     77   bool HandleStartStream(const XmlElement * element);
     78   bool HandleFeatures(const XmlElement * element);
     79   const XmlElement * GetFeature(const QName & name);
     80   bool Failure(XmppEngine::Error reason);
     81   void FlushQueuedStanzas();
     82 
     83   XmppEngineImpl * pctx_;
     84   bool authNeeded_;
     85   bool allowNonGoogleLogin_;
     86   LoginTaskState state_;
     87   const XmlElement * pelStanza_;
     88   bool isStart_;
     89   std::string iqId_;
     90   talk_base::scoped_ptr<XmlElement> pelFeatures_;
     91   Jid fullJid_;
     92   std::string streamId_;
     93   talk_base::scoped_ptr<std::vector<XmlElement *> > pvecQueuedStanzas_;
     94 
     95   talk_base::scoped_ptr<SaslMechanism> sasl_mech_;
     96 
     97 #ifdef _DEBUG
     98   static const talk_base::ConstantLabel LOGINTASK_STATES[];
     99 #endif  // _DEBUG
    100 };
    101 
    102 }
    103 
    104 #endif  //  TALK_XMPP_LOGINTASK_H_
    105