/*

* Copyright (c) 2006-2009 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:  Statemachine for handling received neighbor response.

*

*/

#include "core_operation_handle_neighbor_response.h"

#include "core_frame_dot11_ie.h"

#include "core_frame_mgmt_ie.h"

#include "core_frame_nr_ie.h"

#include "core_frame_action_nr.h"

#include "core_tools.h"

#include "core_server.h"

#include "am_debug.h"

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

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

//

core_operation_handle_neighbor_response_c::core_operation_handle_neighbor_response_c(

    u32_t request_id,

    core_server_c* server,

    abs_core_driverif_c* drivers,

    abs_core_server_callback_c* adaptation,

    core_frame_action_nr_c* neighbor_response ) :

    core_operation_base_c( core_operation_handle_neighbor_response, request_id, server, drivers, adaptation, 

        core_base_flag_none ),

    neighbor_response_m( neighbor_response ),

    current_ie_m( NULL ),

    neighbor_resp_parser_m ( NULL )

    {

    DEBUG( "core_operation_handle_neighbor_response_c::core_operation_handle_neighbor_response_c()" );

    }

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

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

//

core_operation_handle_neighbor_response_c::~core_operation_handle_neighbor_response_c()

    {

    DEBUG( "core_operation_handle_neighbor_response_c::~core_operation_handle_neighbor_response_c()" );

    ie_list_m.clear();

    if ( neighbor_response_m )

        {

        delete neighbor_response_m;

        neighbor_response_m = NULL;

        }

    if ( current_ie_m )

        {

        delete current_ie_m;

        current_ie_m = NULL;

        }

    if ( neighbor_resp_parser_m )

        {

        delete neighbor_resp_parser_m;

        neighbor_resp_parser_m = NULL;

        }

    }

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

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

//

core_error_e core_operation_handle_neighbor_response_c::next_state()

    {

    DEBUG( "core_operation_handle_neighbor_response_c::next_state()" );

    switch ( operation_state_m )

        {

        case core_state_init:

            {

            DEBUG( "core_operation_handle_neighbor_response_c::next_state() - core_state_init" );

            if ( !server_m->get_core_settings().is_connected() )

                {

                DEBUG( "core_operation_handle_neighbor_response_c::next_state() - not connected, nothing to do" );

                return core_error_general;

                }

            DEBUG1( "core_operation_handle_neighbor_response_c::next_state() - Dialog token: 0x%02X",

                    neighbor_response_m->dialog_token() );

            // loop through IEs

            for ( core_frame_dot11_ie_c* ie = neighbor_response_m->first_ie(); ie; ie = neighbor_response_m->next_ie() )

                {

                DEBUG( "core_operation_handle_neighbor_response_c::next_state() - Found IE:" );

                DEBUG1( "core_operation_handle_neighbor_response_c::next_state() - ID: 0x%02X",

                    ie->element_id() );

                DEBUG1( "core_operation_handle_neighbor_response_c::next_state() - Length: 0x%02X",

                    ie->length() );

                ie_list_m.append( ie );

                }

            if ( ie_list_m.count() == 0 )

                {

                DEBUG( "core_operation_handle_neighbor_response_c::next_state() - Neighbor response didn't contain any IEs" );

                DEBUG( "core_operation_handle_neighbor_response_c::next_state() - Going to core_state_operation_finished." );

                return goto_state( core_state_operation_finished );

                }

            return goto_state( core_state_get_next_ie );

            }

        case core_state_get_next_ie:

            {

            DEBUG( "core_operation_handle_neighbor_response_c::next_state() - state core_state_get_next_ie" );

            if ( current_ie_m != NULL )

                {

                // deallocate IE

                delete current_ie_m;

                current_ie_m = NULL;

                }

            current_ie_m = ie_list_m.first();

            if ( current_ie_m == NULL )

                {

                DEBUG( "core_operation_handle_neighbor_response_c::next_state() - All IEs processed" );

                return goto_state( core_state_operation_finished );

                }

            // remove ie from list, it is now owned by current_ie_m

            ie_list_m.remove ( current_ie_m );

            return asynch_goto( core_state_process_current_ie );

            }

        case core_state_process_current_ie:

            {

            if ( current_ie_m->element_id() == core_frame_dot11_ie_c::core_frame_dot11_ie_element_id_neighbor_report )

                {

                // parse IE

                parse( current_ie_m );

                // deallocate IE

                delete current_ie_m;

                current_ie_m = NULL;

                }

            DEBUG( "core_operation_handle_neighbor_response_c::next_state() - Going to core_state_get_next_ie." );

            return goto_state( core_state_get_next_ie );

            }

        case core_state_operation_finished:

            {

            DEBUG( "core_operation_handle_neighbor_response_c::next_state() - state core_state_operation_finished" );

            return core_error_ok;

            }

        default:

            {

            ASSERT( false_t );

            }

        }

    return core_error_request_pending;

    }

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

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

//

void core_operation_handle_neighbor_response_c::parse(

        core_frame_dot11_ie_c* ie )

    {

    DEBUG( "core_operation_handle_neighbor_response_c::parse() - * Neighbor Report Response IE received *" );

    if ( neighbor_resp_parser_m != NULL )

        {

        delete neighbor_resp_parser_m;

        neighbor_resp_parser_m = NULL;

        }

    neighbor_resp_parser_m = core_frame_nr_ie_c::instance( *ie );

    if ( neighbor_resp_parser_m )

        {

        core_mac_address_s a = neighbor_resp_parser_m->bssid();

        DEBUG6( "core_operation_handle_neighbor_response_c::parse() - BSSID: %02X:%02X:%02X:%02X:%02X:%02X",

                a.addr[0],a.addr[1],a.addr[2],a.addr[3],a.addr[4],a.addr[5] );

        DEBUG1( "core_operation_handle_neighbor_response_c::parse() - BSSID Information: 0x%08X",

                neighbor_resp_parser_m->bssid_info() );

        DEBUG1( "core_operation_handle_neighbor_response_c::parse() - Regulatory Class: 0x%02X",

                neighbor_resp_parser_m->regulatory_class() );

        DEBUG1( "core_operation_handle_neighbor_response_c::parse() - Channel Number: 0x%02X",

                neighbor_resp_parser_m->channel_number() );

        DEBUG1( "core_operation_handle_neighbor_response_c::parse() - PHY Type: 0x%02X",

                neighbor_resp_parser_m->phy_type() );

        core_scan_channels_c channels;

        if ( server_m->get_core_settings().is_valid_channel(

            SCAN_BAND_2DOT4GHZ,

            neighbor_resp_parser_m->channel_number() ) )

            {

            channels.add(

                SCAN_BAND_2DOT4GHZ,

                neighbor_resp_parser_m->channel_number() );

            }

        else

            {

            DEBUG( "core_operation_handle_neighbor_response_c::parse() - channel doesn't match the current regional domain, ignoring." );

            }

        DEBUG1( "core_operation_handle_neighbor_response_c::parse() - adding the current channel %u",

            server_m->get_connection_data()->current_ap_data()->channel() );

        channels.add(

            SCAN_BAND_2DOT4GHZ,

            server_m->get_connection_data()->current_ap_data()->channel() );

        server_m->get_connection_data()->merge_adjacent_ap_channels(

            channels );            

        }

    }