/*

* Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

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

* which accompanies this distribution, and is available

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

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Parser utility for 802.11 (re-)association response frames.

*

*/

#include "core_frame_assoc_resp.h"

#include "core_frame_dot11_ie.h"

#include "core_tools.h"

#include "am_debug.h"

const u16_t CORE_FRAME_REASSOC_RESP_LENGTH = 24;

const u16_t CORE_FRAME_REASSOC_RESP_IE_INDEX = 6;

const u16_t CORE_FRAME_REASSOC_RESP_CAPABILITY_INDEX = 0;

const u16_t CORE_FRAME_REASSOC_RESP_STATUS_CODE_INDEX = 2;

const u16_t CORE_FRAME_REASSOC_RESP_AID_INDEX = 4;

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

// ---------------------------------------------------------------------------

// ---------------------------------------------------------------------------

//

core_frame_assoc_resp_c* core_frame_assoc_resp_c::instance(

    const core_frame_dot11_c& frame,

    bool_t is_copied )

    {

    DEBUG( "core_frame_assoc_resp_c::instance()" );

    if ( frame.data_length() < CORE_FRAME_REASSOC_RESP_LENGTH )

        {

        DEBUG( "core_frame_assoc_resp_c::instance() - not a valid 802.11 (re-)association frame, frame is too short" );

        return NULL;

        }

    u8_t* buffer = const_cast<u8_t*>( frame.data() );

    u16_t buffer_length( 0 );

    if ( is_copied )

        {

        buffer_length = frame.data_length();

        buffer = new u8_t[buffer_length];

        if ( !buffer )

            {

            DEBUG( "core_frame_assoc_resp_c::instance() - not able to allocate buffer for copying" );

            return NULL;            

            }

        core_tools_c::copy(

            buffer,

            frame.data(),

            buffer_length );            

        }

    core_frame_assoc_resp_c* instance = new core_frame_assoc_resp_c(

        frame.data_length(),

        buffer,

        buffer_length );

    if ( !instance )

        {

        DEBUG( "core_frame_assoc_resp_c::instance() - unable to create an instance" );

        if ( is_copied )

            {

            delete[] buffer;

            }

        return NULL;

        }

    if ( instance->type() != core_frame_dot11_c::core_dot11_type_association_resp &&

         instance->type() != core_frame_dot11_c::core_dot11_type_reassociation_resp )

        {

        DEBUG( "core_frame_assoc_resp_c::instance() - not a valid (re-)assocation response frame" );

        delete instance;

        return NULL;

        }

    return instance;

    }

// ---------------------------------------------------------------------------

// ---------------------------------------------------------------------------

//

core_frame_assoc_resp_c::~core_frame_assoc_resp_c()

    {

    DEBUG( "core_frame_assoc_resp_c::~core_frame_assoc_resp_c()" );

    }

// ---------------------------------------------------------------------------

// ---------------------------------------------------------------------------

//

u16_t core_frame_assoc_resp_c::capability() const

    {

    return core_tools_c::get_u16( payload_data(),

        CORE_FRAME_REASSOC_RESP_CAPABILITY_INDEX );

    }

// ---------------------------------------------------------------------------

// ---------------------------------------------------------------------------

//

u16_t core_frame_assoc_resp_c::status_code() const

    {

    return core_tools_c::get_u16( payload_data(),

        CORE_FRAME_REASSOC_RESP_STATUS_CODE_INDEX );

    }

// ---------------------------------------------------------------------------

// ---------------------------------------------------------------------------

//

u16_t core_frame_assoc_resp_c::aid() const

    {

    return core_tools_c::get_u16( payload_data(),

        CORE_FRAME_REASSOC_RESP_AID_INDEX );

    }

// ---------------------------------------------------------------------------

// ---------------------------------------------------------------------------

//

u16_t core_frame_assoc_resp_c::first_ie_offset() const

    {

    return CORE_FRAME_REASSOC_RESP_IE_INDEX;

    }    

// ---------------------------------------------------------------------------

// ---------------------------------------------------------------------------

//

core_frame_assoc_resp_c::core_frame_assoc_resp_c(

    u16_t data_length,

    const u8_t* data,

    u16_t max_data_length ) :

    core_frame_dot11_c( data_length, data, max_data_length )

    {

    DEBUG( "core_frame_assoc_resp_c::core_frame_assoc_resp_c()" );

    }