/*

* Copyright (c) 2001-2006 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:  EAP and WLAN authentication protocols.

*

*/

// This is enumeration of EAPOL source code.

#if defined(USE_EAP_MINIMUM_RELEASE_TRACES)

	#undef EAP_FILE_NUMBER_ENUM

	#define EAP_FILE_NUMBER_ENUM 53 

	#undef EAP_FILE_NUMBER_DATE 

	#define EAP_FILE_NUMBER_DATE 1127594498 

#endif //#if defined(USE_EAP_MINIMUM_RELEASE_TRACES)

#include "eapol_rsna_key_data_gtk_header.h"

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

// 

eapol_rsna_key_data_gtk_header_c::~eapol_rsna_key_data_gtk_header_c()

{

}

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

// 

eapol_rsna_key_data_gtk_header_c::eapol_rsna_key_data_gtk_header_c(

	abs_eap_am_tools_c * const tools,

	void * const header_begin,

	const u32_t header_buffer_length)

	: eap_general_header_base_c(tools, header_begin, header_buffer_length)

	, m_am_tools(tools)

{

}

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

// 

u8_t eapol_rsna_key_data_gtk_header_c::get_key_index() const

{

	const u8_t * const data = get_header_offset(m_offset_flags, EAPOL_RSNA_KEY_DATA_FLAGS_FIELD_SIZE);

	if (data != 0)

	{

		return static_cast<u8_t>(((*data) & EAPOL_RSNA_KEY_DATA_GTK_INDEX_MASK) >> EAPOL_RSNA_KEY_DATA_GTK_INDEX_SHIFT);

	}

	else

	{

		return EAPOL_RSNA_KEY_DATA_INVALID_GTK_INDEX;

	}

}

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

// 

bool eapol_rsna_key_data_gtk_header_c::get_tx_bit() const

{

	const u8_t * const data = get_header_offset(m_offset_flags, EAPOL_RSNA_KEY_DATA_FLAGS_FIELD_SIZE);

	if (data != 0)

	{

		u8_t flag = static_cast<u8_t>(((*data) & EAPOL_RSNA_KEY_DATA_TX_MASK) >> EAPOL_RSNA_KEY_DATA_TX_SHIFT);

		if (flag != 0)

		{

			return true;

		}

		else

		{

			return false;

		}

	}

	else

	{

		return false;

	}

}

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

// 

u8_t * eapol_rsna_key_data_gtk_header_c::get_gtk_offset(const u32_t offset, const u32_t contignuous_bytes) const

{

	u32_t GTK_buffer_length = get_header_buffer_length() - get_header_length();

	if (GTK_buffer_length >= offset+contignuous_bytes)

	{

		// This is pointer to the offset of the Data.

		u8_t * const data = get_header_offset(m_offset_gtk, offset+contignuous_bytes);

		if (data != 0)

		{

			return &data[offset];

		}

		else

		{

			return 0;

		}

	}

	else

	{

		EAP_ASSERT_ALWAYS(GTK_buffer_length >= offset+contignuous_bytes);

	}

	return 0;

}

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

// 

u8_t * eapol_rsna_key_data_gtk_header_c::get_gtk(const u32_t contignuous_bytes) const

{

	return get_gtk_offset(0u, contignuous_bytes);

}

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

// 

u16_t eapol_rsna_key_data_gtk_header_c::get_header_length()

{

	return m_offset_gtk;

}

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

// 

eap_status_e eapol_rsna_key_data_gtk_header_c::set_key_index(const u32_t index)

{

	u8_t * const data = get_header_offset(m_offset_flags, EAPOL_RSNA_KEY_DATA_FLAGS_FIELD_SIZE);

	if (data != 0)

	{

		*data = static_cast<u8_t>(((*data) && ~EAPOL_RSNA_KEY_DATA_GTK_INDEX_MASK)

								  | ((index <<EAPOL_RSNA_KEY_DATA_GTK_INDEX_SHIFT) & EAPOL_RSNA_KEY_DATA_GTK_INDEX_MASK));

		return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);

	}

	else

	{

		return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);

	}

}

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

// 

eap_status_e eapol_rsna_key_data_gtk_header_c::set_tx(const bool tx)

{

	u8_t * const data = get_header_offset(m_offset_flags, EAPOL_RSNA_KEY_DATA_FLAGS_FIELD_SIZE);

	if (data != 0)

	{

		*data = static_cast<u8_t>(((*data) && ~EAPOL_RSNA_KEY_DATA_TX_MASK)

								  | ((tx <<EAPOL_RSNA_KEY_DATA_TX_SHIFT) & EAPOL_RSNA_KEY_DATA_TX_MASK));

		return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);

	}

	else

	{

		return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);

	}

}

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

// 

eap_status_e eapol_rsna_key_data_gtk_header_c::set_reserved_flag(const u32_t index)

{

	u8_t * const data = get_header_offset(m_offset_flags, EAPOL_RSNA_KEY_DATA_FLAGS_FIELD_SIZE);

	if (data != 0)

	{

		*data = static_cast<u8_t>(((*data) && ~EAPOL_RSNA_KEY_DATA_RESERVED_MASK)

								  | ((index <<EAPOL_RSNA_KEY_DATA_RESERVED_SHIFT) & EAPOL_RSNA_KEY_DATA_RESERVED_MASK));

		return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);

	}

	else

	{

		return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);

	}

}

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

// 

eap_status_e eapol_rsna_key_data_gtk_header_c::set_reserved_field(const u32_t reserved)

{

	u8_t * const data = get_header_offset(m_offset_reserved, EAPOL_RSNA_KEY_DATA_RESERVED_FIELD_SIZE);

	if (data != 0)

	{

		*data = static_cast<u8_t>(reserved);

		return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);

	}

	else

	{

		return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);

	}

}

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

// 

eap_status_e eapol_rsna_key_data_gtk_header_c::check_header() const

{

	return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);

}

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

// 

eap_status_e eapol_rsna_key_data_gtk_header_c::reset_header()

{

	eap_status_e status(eap_status_process_general_error);

	m_am_tools->memset(

		get_header_buffer(get_header_buffer_length()),

		0ul,

		get_header_buffer_length());

	status = set_key_index(0ul);

	if (status != eap_status_ok)

	{

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return EAP_STATUS_RETURN(m_am_tools, status);

	}

	status = set_tx(false);

	if (status != eap_status_ok)

	{

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return EAP_STATUS_RETURN(m_am_tools, status);

	}

	status = set_reserved_flag(0ul);

	if (status != eap_status_ok)

	{

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return EAP_STATUS_RETURN(m_am_tools, status);

	}

	status = set_reserved_field(0ul);

	if (status != eap_status_ok)

	{

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return EAP_STATUS_RETURN(m_am_tools, status);

	}

	return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);

}

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

// End.