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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 
IsDone()53   bool IsDone()
54     { return state_ == LOGINSTATE_DONE; }
55   void IncomingStanza(const XmlElement * element, bool isStart);
56   void OutgoingStanza(const XmlElement *element);
set_allow_non_google_login(bool b)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