1 /*

     2 * Copyright (c) 2006-2006 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Timer for handling WPA TKIP counter measures

    15 *

    16 */

    17 

    18 

    19 #include "core_timer_factory.h"

    20 #include "core_timer_counter_measures.h"

    21 #include "core_callback.h"

    22 #include "am_debug.h"

    23 

    24 /** Wait time for the next secure connection failure (60 sec). */

    25 const uint_t CORE_CM_FAIL_WAIT_TIME = 60000000;

    26 

    27 /** Blocking time for WPA connections (60 sec). */

    28 const uint_t CORE_CM_BLOCKING_TIME = 60000000;

    29 

    30 // ======== MEMBER FUNCTIONS ========

    31 

    32 // ---------------------------------------------------------------------------

    33 // ---------------------------------------------------------------------------

    34 core_timer_counter_measures_c::core_timer_counter_measures_c() :

    35     state_m( core_state_not_running ),

    36     timer_m( NULL )

    37     {

    38     DEBUG( "core_timer_counter_measures_c::core_timer_counter_measures_c()" );

    39 

    40     core_callback_c* timer_callback = 

    41         new core_callback_c( &(core_timer_counter_measures_c::timer_expired), this );

    42     if( !timer_callback )

    43         {

    44         DEBUG( "core_timer_counter_measures_c::core_timer_counter_measures_c() - unable to create callbacks" );

    45         }

    46 

    47     timer_m = core_timer_factory_c::create_timer( timer_callback );

    48     if( !timer_m )

    49         {

    50         delete timer_callback;

    51         DEBUG( "core_timer_counter_measures_c::core_timer_counter_measures_c() - unable to create timer" );

    52         }

    53     }

    54 

    55 // ---------------------------------------------------------------------------

    56 // ---------------------------------------------------------------------------

    57 core_timer_counter_measures_c::~core_timer_counter_measures_c()

    58     {

    59     DEBUG( "core_timer_counter_measures_c::~core_timer_counter_measures_c()" );

    60 

    61     if ( timer_m )

    62         {

    63         timer_m->stop();

    64         core_timer_factory_c::destroy_timer( timer_m );      

    65         }    

    66     }

    67 

    68 // -----------------------------------------------------------------------------

    69 // -----------------------------------------------------------------------------

    70 //

    71 bool_t core_timer_counter_measures_c::is_wpa_allowed()

    72     {

    73     return ( state_m != core_state_blocked );

    74     }

    75     

    76 // -----------------------------------------------------------------------------

    77 // -----------------------------------------------------------------------------

    78 //

    79 void core_timer_counter_measures_c::mic_failure()

    80     {

    81     DEBUG( "core_timer_counter_measures_c::mic_failure()" );

    82 

    83     switch ( state_m )

    84         {

    85         case core_state_not_running:

    86             DEBUG( "core_timer_counter_measures_c::mic_failure() - new state is core_state_activated" );

    87             state_m = core_state_activated;

    88             if ( timer_m )

    89                 {

    90                 timer_m->start( CORE_CM_FAIL_WAIT_TIME );

    91                 }

    92             break;

    93         case core_state_activated:

    94             DEBUG( "core_timer_counter_measures_c::mic_failure() - new state is core_state_blocked" );

    95             state_m = core_state_blocked;

    96             if ( timer_m )

    97                 {

    98                 timer_m->stop();

    99                 timer_m->start( CORE_CM_BLOCKING_TIME );

   100                 }

   101             break;

   102         default:

   103             DEBUG( "core_timer_counter_measures_c::mic_failure() - indication in wrong state" );

   104             ASSERT( false_t );

   105             break;

   106         }

   107     }

   108 

   109 // -----------------------------------------------------------------------------

   110 // -----------------------------------------------------------------------------

   111 //

   112 void core_timer_counter_measures_c::timer_expired(

   113     void* this_ptr )

   114     {

   115     DEBUG( "core_timer_counter_measures_c::timer_expired()" );

   116 

   117     core_timer_counter_measures_c* self =

   118         static_cast<core_timer_counter_measures_c*>( this_ptr );

   119 

   120     switch ( self->state_m )

   121         {

   122         case core_state_activated:

   123             /** Falls through on purpose. */

   124         case core_state_blocked:

   125             DEBUG( "core_timer_counter_measures_c::timer_expired() - new state is core_state_not_running" );

   126             self->state_m = core_state_not_running;

   127             break;

   128         default:

   129             DEBUG( "core_timer_counter_measures_c::timer_expired() - expiration in wrong state" );

   130             ASSERT( false_t );

   131             break;

   132         }

   133     }