/*
* 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()" );
    }