jingle/notifier/communicator/single_login_attempt.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef JINGLE_NOTIFIER_COMMUNICATOR_SINGLE_LOGIN_ATTEMPT_H_
   6 #define JINGLE_NOTIFIER_COMMUNICATOR_SINGLE_LOGIN_ATTEMPT_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "jingle/notifier/base/xmpp_connection.h"
  11 #include "jingle/notifier/communicator/connection_settings.h"
  12 #include "jingle/notifier/communicator/login_settings.h"
  13 #include "webrtc/libjingle/xmpp/xmppengine.h"
  14
  15 namespace buzz {
  16 class XmppTaskParentInterface;
  17 }  // namespace buzz
  18
  19 namespace notifier {
  20
  21 struct ServerInformation;
  22
  23 // Handles all of the aspects of a single login attempt.  By
  24 // containing this within one class, when another login attempt is
  25 // made, this class can be destroyed to immediately stop the previous
  26 // login attempt.
  27 class SingleLoginAttempt : public XmppConnection::Delegate {
  28  public:
  29   // At most one delegate method will be called, depending on the
  30   // result of the login attempt.  After the delegate method is
  31   // called, this class won't do anything anymore until it is
  32   // destroyed, at which point it will disconnect if necessary.
  33   class Delegate {
  34    public:
  35     // Called when the login attempt is successful.
  36     virtual void OnConnect(
  37         base::WeakPtr<buzz::XmppTaskParentInterface> base_task) = 0;
  38
  39     // Called when the server responds with a redirect.  A new login
  40     // attempt should be made to the given redirect server.
  41     virtual void OnRedirect(const ServerInformation& redirect_server) = 0;
  42
  43     // Called when a server rejects the client's login credentials.  A
  44     // new login attempt should be made once the client provides new
  45     // credentials.
  46     virtual void OnCredentialsRejected() = 0;
  47
  48     // Called when no server could be logged into for reasons other
  49     // than redirection or rejected credentials.  A new login attempt
  50     // may be created, but it should be done with exponential backoff.
  51     virtual void OnSettingsExhausted() = 0;
  52
  53    protected:
  54     virtual ~Delegate();
  55   };
  56
  57   // Does not take ownership of |delegate|, which must not be NULL.
  58   SingleLoginAttempt(const LoginSettings& login_settings, Delegate* delegate);
  59
  60   ~SingleLoginAttempt() override;
  61
  62   // XmppConnection::Delegate implementation.
  63   void OnConnect(base::WeakPtr<buzz::XmppTaskParentInterface> parent) override;
  64   void OnError(buzz::XmppEngine::Error error,
  65                int error_subcode,
  66                const buzz::XmlElement* stream_error) override;
  67
  68  private:
  69   void TryConnect(const ConnectionSettings& new_settings);
  70
  71   const LoginSettings login_settings_;
  72   Delegate* const delegate_;
  73   const ConnectionSettingsList settings_list_;
  74   ConnectionSettingsList::const_iterator current_settings_;
  75   scoped_ptr<XmppConnection> xmpp_connection_;
  76
  77   DISALLOW_COPY_AND_ASSIGN(SingleLoginAttempt);
  78 };
  79
  80 }  // namespace notifier
  81
  82 #endif  // JINGLE_NOTIFIER_COMMUNICATOR_SINGLE_LOGIN_ATTEMPT_H_