/*
* 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.
*
*/

/*
* %version: 29 %
*/

// This is enumeration of EAPOL source code.
#if defined(USE_EAP_MINIMUM_RELEASE_TRACES)
	#undef EAP_FILE_NUMBER_ENUM
	#define EAP_FILE_NUMBER_ENUM 60 
	#undef EAP_FILE_NUMBER_DATE 
	#define EAP_FILE_NUMBER_DATE 1127594498 
#endif //#if defined(USE_EAP_MINIMUM_RELEASE_TRACES)



#include "eap_am_memory.h"
#include "eap_tools.h"
#include "eap_core_client_message_if.h"
#include "eap_state_notification.h"
#include "eap_network_id_selector.h"
#include "abs_eap_am_mutex.h"
#include "eap_config.h"
#include "eap_core.h"
#include "eap_buffer.h"
#include "eap_base_type.h"
#include "eap_automatic_variable.h"
#include "eap_process_tlv_message_data.h"
#include "eap_master_session_key.h"
#include "eapol_key_types.h"

#if defined(USE_EAP_SIMPLE_CONFIG)
#include "simple_config_types.h"
#include "simple_config_credential.h"
#include "simple_config_payloads.h"
#endif // #if defined(USE_EAP_SIMPLE_CONFIG)

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

// 
EAP_FUNC_EXPORT eap_core_client_message_if_c::~eap_core_client_message_if_c()
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_DEBUG(
		m_am_tools, 
		EAP_TRACE_FLAGS_MESSAGE_DATA, 
		(EAPL("eap_core_client_message_if_c::~eap_core_client_message_if_c(): this = 0x%08x => 0x%08x.\n"),
		this,
		dynamic_cast<abs_eap_base_timer_c *>(this)));

	EAP_ASSERT(m_shutdown_was_called == true);

	delete m_server_if;
	m_server_if = 0;

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
}

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

#if defined(_WIN32) && !defined(__GNUC__)
	#pragma warning( disable : 4355 ) // 'this' : used in base member initializer list
#endif

// 
EAP_FUNC_EXPORT eap_core_client_message_if_c::eap_core_client_message_if_c(
	abs_eap_am_tools_c * const tools,
	eap_am_message_if_c * const server,
	abs_eap_session_core_c * const partner,
	const bool is_client_when_true)
: m_am_tools(tools)
, m_server_if(server)
, m_partner(partner)
, m_error_code(eap_status_ok)
, m_error_function(eap_tlv_message_type_function_none)
, m_eap_header_offset(0ul)
, m_MTU(0ul)
, m_trailer_length(0ul)
, m_is_client(is_client_when_true)
, m_is_valid(false)
, m_shutdown_was_called(false)
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_DEBUG(
		m_am_tools, 
		EAP_TRACE_FLAGS_MESSAGE_DATA, 
		(EAPL("eap_core_client_message_if_c::eap_core_client_message_if_c(): this = 0x%08x => 0x%08x.\n"),
		this,
		dynamic_cast<abs_eap_base_timer_c *>(this)));

	set_is_valid();

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
}

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

EAP_FUNC_EXPORT eap_status_e eap_core_client_message_if_c::process_message(eap_process_tlv_message_data_c * const message)
{
	// Sends message data composed of Attribute-Value Pairs.

	EAP_TRACE_RETURN_STRING_FLAGS(m_am_tools, EAP_TRACE_FLAGS_MESSAGE_DATA, "returns: eap_core_client_message_if_c::send_message()");

	EAP_TRACE_DATA_DEBUG(
		m_am_tools,
		EAP_TRACE_FLAGS_MESSAGE_DATA,
		(EAPL("eap_core_client_message_if_c::send_message()"),
		message->get_message_data(),
		message->get_message_data_length()));

	{
		eap_status_e send_status = m_server_if->process_data(
			message->get_message_data(),
			message->get_message_data_length());
		if (send_status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, send_status);
		}


		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, send_status);
	}

}

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

//
EAP_FUNC_EXPORT void eap_core_client_message_if_c::set_is_valid()
{
	m_is_valid = true;
}

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

//
EAP_FUNC_EXPORT bool eap_core_client_message_if_c::get_is_valid()
{
	return m_is_valid;
}

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

EAP_FUNC_EXPORT eap_status_e eap_core_client_message_if_c::reset()
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_DEBUG(
		m_am_tools, 
		EAP_TRACE_FLAGS_MESSAGE_DATA, 
		(EAPL("eap_core_client_message_if_c::reset(): this = 0x%08x => 0x%08x.\n"),
		this,
		dynamic_cast<abs_eap_base_timer_c *>(this)));

	EAP_TRACE_RETURN_STRING_FLAGS(m_am_tools, EAP_TRACE_FLAGS_MESSAGE_DATA, "returns: eap_core_client_message_if_c::reset()");

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);
}

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

//
EAP_FUNC_EXPORT eap_status_e eap_core_client_message_if_c::packet_process(
	const eap_am_network_id_c * const receive_network_id,
	eap_general_header_base_c * const packet_data,
	const u32_t packet_length)
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_DEBUG(
		m_am_tools, 
		EAP_TRACE_FLAGS_MESSAGE_DATA, 
		(EAPL("eap_core_client_message_if_c::packet_process(): this = 0x%08x => 0x%08x.\n"),
		this,
		dynamic_cast<abs_eap_base_timer_c *>(this)));

	EAP_TRACE_RETURN_STRING_FLAGS(m_am_tools, EAP_TRACE_FLAGS_MESSAGE_DATA, "returns: eap_core_client_message_if_c::packet_process()");

	EAP_ASSERT(m_am_tools->get_global_mutex()->get_is_reserved() == true);

	eap_status_e status(eap_status_process_general_error);

	// Creates message data composed of Attribute-Value Pairs.
	eap_process_tlv_message_data_c message(m_am_tools);

	if (message.get_is_valid() == false)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
	}

	status = message.add_parameter_data(eap_tlv_message_type_function_packet_process);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

	status = message.add_parameter_data(
		receive_network_id);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

	if (packet_length != packet_data->get_header_buffer_length())
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_parameter);
	}

	status = message.add_parameter_data(
		packet_data);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

	status = process_message(&message);

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

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

//
EAP_FUNC_EXPORT eap_status_e eap_core_client_message_if_c::configure()
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_ASSERT(m_am_tools->get_global_mutex()->get_is_reserved() == true);

	m_eap_header_offset = m_partner->get_header_offset(
		&m_MTU, &m_trailer_length);

	eap_variable_data_c client_configuration(m_am_tools);

	eap_status_e status = m_partner->read_configure(
		cf_str_EAP_read_all_configurations.get_field(),
		&client_configuration);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

	status = m_server_if->configure(&client_configuration);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

	status = eap_mtu(m_MTU);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

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

//
EAP_FUNC_EXPORT eap_status_e eap_core_client_message_if_c::shutdown()
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_ASSERT(m_am_tools->get_global_mutex()->get_is_reserved() == true);

	EAP_TRACE_DEBUG(
		m_am_tools, 
		EAP_TRACE_FLAGS_MESSAGE_DATA, 
		(EAPL("eap_core_client_message_if_c::shutdown(): this = 0x%08x => 0x%08x.\n"),
		this,
		dynamic_cast<abs_eap_base_timer_c *>(this)));

	if (m_shutdown_was_called == true)
	{
		// Shutdown function was called already.
		return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);
	}
	m_shutdown_was_called = true;

	if (m_server_if != 0)
	{
		(void)m_server_if->shutdown();
	}

	eap_status_e status = reset();

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

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

//
eap_status_e eap_core_client_message_if_c::eap_mtu(
	const u32_t MTU)
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_DEBUG(
		m_am_tools, 
		EAP_TRACE_FLAGS_MESSAGE_DATA, 
		(EAPL("eap_core_client_message_if_c::eap_mtu(): this = 0x%08x => 0x%08x.\n"),
		this,
		dynamic_cast<abs_eap_base_timer_c *>(this)));

	EAP_TRACE_RETURN_STRING_FLAGS(m_am_tools, EAP_TRACE_FLAGS_MESSAGE_DATA, "returns: eap_core_client_message_if_c::eap_mtu()");

	EAP_ASSERT(m_am_tools->get_global_mutex()->get_is_reserved() == true);

	eap_status_e status(eap_status_process_general_error);

	{
		// Creates message data composed of Attribute-Value Pairs.
		eap_process_tlv_message_data_c message(m_am_tools);

		if (message.get_is_valid() == false)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
		}

		status = message.add_parameter_data(eap_tlv_message_type_function_eap_mtu);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = message.add_parameter_data(MTU);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = process_message(&message);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}
	}

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

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

//
EAP_FUNC_EXPORT eap_status_e eap_core_client_message_if_c::eap_acknowledge(
	const eap_am_network_id_c * const receive_network_id)
{
	// Any Network Protocol packet is accepted as a success indication.
	// This is described in RFC 2284 "PPP Extensible Authentication Protocol (EAP)".

	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_DEBUG(
		m_am_tools, 
		EAP_TRACE_FLAGS_MESSAGE_DATA, 
		(EAPL("eap_core_client_message_if_c::eap_acknowledge(): this = 0x%08x => 0x%08x.\n"),
		this,
		dynamic_cast<abs_eap_base_timer_c *>(this)));

	EAP_TRACE_RETURN_STRING_FLAGS(m_am_tools, EAP_TRACE_FLAGS_MESSAGE_DATA, "returns: eap_core_client_message_if_c::eap_acknowledge()");

	EAP_ASSERT(m_am_tools->get_global_mutex()->get_is_reserved() == true);

	eap_status_e status(eap_status_process_general_error);

	if (receive_network_id == 0)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_parameter);
	}

	{
		// Creates message data composed of Attribute-Value Pairs.
		eap_process_tlv_message_data_c message(m_am_tools);

		if (message.get_is_valid() == false)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
		}

		status = message.add_parameter_data(eap_tlv_message_type_function_eap_acknowledge);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = message.add_parameter_data(receive_network_id);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = process_message(&message);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}
	}

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

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

#if defined(USE_EAP_CORE_SERVER)

//
EAP_FUNC_EXPORT eap_status_e eap_core_client_message_if_c::send_eap_identity_request(
	const eap_am_network_id_c * const receive_network_id)
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_ASSERT(m_am_tools->get_global_mutex()->get_is_reserved() == true);

	eap_status_e status(eap_status_process_general_error);

	EAP_TRACE_DEBUG(
		m_am_tools, 
		EAP_TRACE_FLAGS_MESSAGE_DATA, 
		(EAPL("eap_core_client_message_if_c::send_eap_identity_request(): this = 0x%08x => 0x%08x.\n"),
		this,
		dynamic_cast<abs_eap_base_timer_c *>(this)));

	EAP_TRACE_RETURN_STRING_FLAGS(m_am_tools, EAP_TRACE_FLAGS_MESSAGE_DATA, "returns: eap_core_client_message_if_c::send_eap_identity_request()");

	{
		// Creates message data composed of Attribute-Value Pairs.
		eap_process_tlv_message_data_c message(m_am_tools);

		if (message.get_is_valid() == false)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
		}

		status = message.add_parameter_data(eap_tlv_message_type_function_send_eap_identity_request);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = message.add_parameter_data(receive_network_id);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = process_message(&message);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}
	}

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

#endif //#if defined(USE_EAP_CORE_SERVER)

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

EAP_FUNC_EXPORT eap_status_e eap_core_client_message_if_c::set_eap_database_reference_values(
	const eap_variable_data_c * const reference)
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_ASSERT(m_am_tools->get_global_mutex()->get_is_reserved() == true);

	eap_status_e status(eap_status_process_general_error);

	EAP_TRACE_DEBUG(
		m_am_tools, 
		EAP_TRACE_FLAGS_MESSAGE_DATA, 
		(EAPL("eap_core_client_message_if_c::set_eap_database_reference_values(): this = 0x%08x => 0x%08x.\n"),
		this,
		dynamic_cast<abs_eap_base_timer_c *>(this)));

	EAP_TRACE_RETURN_STRING_FLAGS(m_am_tools, EAP_TRACE_FLAGS_MESSAGE_DATA, "returns: eap_core_client_message_if_c::set_eap_database_reference_values()");

	{
		// Creates message data composed of Attribute-Value Pairs.
		eap_process_tlv_message_data_c message(m_am_tools);

		if (message.get_is_valid() == false)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
		}

		status = message.add_parameter_data(eap_tlv_message_type_function_set_eap_database_reference_values);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = message.add_parameter_data(reference);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = process_message(&message);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}
	}

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

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

//
EAP_FUNC_EXPORT eap_status_e eap_core_client_message_if_c::timer_expired(
	const u32_t id, void *data)
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_DEBUG(
		m_am_tools, 
		EAP_TRACE_FLAGS_MESSAGE_DATA, 
		(EAPL("TIMER: [0x%08x]->eap_core_client_message_if_c::")
		 EAPL("timer_expired(id 0x%02x, data 0x%08x), %s.\n"),
		 this,
		 id,
		 data,
		 (m_is_client == true) ? "client": "server"));


	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);
}

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

//
EAP_FUNC_EXPORT eap_status_e eap_core_client_message_if_c::timer_delete_data(
	const u32_t id, void *data)
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_DEBUG(
		m_am_tools, 
		EAP_TRACE_FLAGS_MESSAGE_DATA, 
		(EAPL("TIMER: [0x%08x]->eap_core_client_message_if_c::")
		 EAPL("timer_delete_data(id 0x%02x, data 0x%08x).\n"),
		this, id, data));

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);
}

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

EAP_FUNC_EXPORT eap_status_e eap_core_client_message_if_c::cancel_all_eap_sessions()
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_DEBUG(
		m_am_tools, 
		EAP_TRACE_FLAGS_MESSAGE_DATA, 
		(EAPL("eap_core_client_message_if_c::cancel_all_eap_sessions(): this = 0x%08x => 0x%08x.\n"),
		this,
		dynamic_cast<abs_eap_base_timer_c *>(this)));

	eap_status_e status = reset();

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

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

EAP_FUNC_EXPORT eap_status_e eap_core_client_message_if_c::create_eap_session(
	const eap_am_network_id_c * const receive_network_id)
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_DEBUG(
		m_am_tools, 
		EAP_TRACE_FLAGS_MESSAGE_DATA, 
		(EAPL("eap_core_client_message_if_c::create_eap_session(): this = 0x%08x => 0x%08x.\n"),
		this,
		dynamic_cast<abs_eap_base_timer_c *>(this)));

	EAP_TRACE_RETURN_STRING_FLAGS(m_am_tools, EAP_TRACE_FLAGS_MESSAGE_DATA, "returns: eap_core_client_message_if_c::create_eap_session()");

	eap_status_e status(eap_status_process_general_error);

	{
		// Creates message data composed of Attribute-Value Pairs.
		eap_process_tlv_message_data_c message(m_am_tools);

		if (message.get_is_valid() == false)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
		}

		status = message.add_parameter_data(eap_tlv_message_type_function_create_eap_session);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = message.add_parameter_data(receive_network_id);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = process_message(&message);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}
	}

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

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

EAP_FUNC_EXPORT eap_status_e eap_core_client_message_if_c::remove_eap_session(
	const bool complete_to_lower_layer,
	const eap_am_network_id_c * const receive_network_id)
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_DEBUG(
		m_am_tools, 
		EAP_TRACE_FLAGS_MESSAGE_DATA, 
		(EAPL("eap_core_client_message_if_c::remove_eap_session(): this = 0x%08x => 0x%08x.\n"),
		this,
		dynamic_cast<abs_eap_base_timer_c *>(this)));

	EAP_TRACE_RETURN_STRING_FLAGS(m_am_tools, EAP_TRACE_FLAGS_MESSAGE_DATA, "returns: eap_core_client_message_if_c::remove_eap_session()");

	eap_status_e status(eap_status_process_general_error);

	{
		// Creates message data composed of Attribute-Value Pairs.
		eap_process_tlv_message_data_c message(m_am_tools);

		if (message.get_is_valid() == false)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
		}

		status = message.add_parameter_data(eap_tlv_message_type_function_remove_eap_session);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = message.add_parameter_data(complete_to_lower_layer);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = message.add_parameter_data(receive_network_id);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = process_message(&message);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}
	}

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

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

eap_status_e eap_core_client_message_if_c::get_802_11_authentication_mode(
	const eap_am_network_id_c * const receive_network_id,
	const eapol_key_authentication_type_e authentication_type,
	const eap_variable_data_c * const SSID,
	const eap_variable_data_c * const preshared_key)
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_DEBUG(
		m_am_tools, 
		EAP_TRACE_FLAGS_MESSAGE_DATA, 
		(EAPL("eap_core_client_message_if_c::get_802_11_authentication_mode(): this = 0x%08x => 0x%08x.\n"),
		this,
		dynamic_cast<abs_eap_base_timer_c *>(this)));

	EAP_TRACE_RETURN_STRING_FLAGS(m_am_tools, EAP_TRACE_FLAGS_MESSAGE_DATA, "returns: eap_core_client_message_if_c::get_802_11_authentication_mode()");

	eap_status_e status(eap_status_process_general_error);

	{
		// Creates message data composed of Attribute-Value Pairs.
		eap_process_tlv_message_data_c message(m_am_tools);

		if (message.get_is_valid() == false)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
		}

		status = message.add_parameter_data(eap_tlv_message_type_function_get_802_11_authentication_mode);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = message.add_parameter_data(receive_network_id);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = message.add_parameter_data(authentication_type);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = message.add_parameter_data(SSID);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = message.add_parameter_data(preshared_key);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = process_message(&message);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}
	}

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

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

eap_status_e eap_core_client_message_if_c::packet_send(
	EAP_TEMPLATE_CONST eap_array_c<eap_tlv_header_c> * const parameters)
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_DEBUG(
		m_am_tools, 
		EAP_TRACE_FLAGS_MESSAGE_DATA, 
		(EAPL("eap_core_client_message_if_c::packet_send(): this = 0x%08x => 0x%08x.\n"),
		this,
		dynamic_cast<abs_eap_base_timer_c *>(this)));

	EAP_TRACE_RETURN_STRING_FLAGS(m_am_tools, EAP_TRACE_FLAGS_MESSAGE_DATA, "returns: eap_core_client_message_if_c::packet_send()");

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

	u32_t parameter_index(eap_message_payload_index_first_parameter);

	eap_process_tlv_message_data_c message_data(m_am_tools);

	if (message_data.get_is_valid() == false)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
	}

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

	eap_am_network_id_c send_network_id(m_am_tools);

	eap_status_e status = message_data.read_parameter_data(parameters, parameter_index, &send_network_id);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

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

	++parameter_index;

	eap_buf_chain_wr_c packet_buffer(eap_write_buffer, m_am_tools);

	if (packet_buffer.get_is_valid() == false)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
	}

	{
		eap_variable_data_c packet_data(m_am_tools);

		if (packet_data.get_is_valid() == false)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
		}

		status = message_data.read_parameter_data(parameters, parameter_index, &packet_data);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = packet_buffer.add_data_to_offset(m_eap_header_offset, &packet_data);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}
	}

	status = m_partner->packet_send(
		&send_network_id,
		&packet_buffer,
		m_eap_header_offset,
		packet_buffer.get_data_length()-m_eap_header_offset,
		packet_buffer.get_data_length());

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

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

eap_status_e eap_core_client_message_if_c::state_notification(
	EAP_TEMPLATE_CONST eap_array_c<eap_tlv_header_c> * const parameters)
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_DEBUG(
		m_am_tools, 
		EAP_TRACE_FLAGS_MESSAGE_DATA, 
		(EAPL("eap_core_client_message_if_c::state_notification(): this = 0x%08x => 0x%08x.\n"),
		this,
		dynamic_cast<abs_eap_base_timer_c *>(this)));

	EAP_TRACE_RETURN_STRING_FLAGS(m_am_tools, EAP_TRACE_FLAGS_MESSAGE_DATA, "returns: eap_core_client_message_if_c::state_notification()");

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

	u32_t parameter_index(eap_message_payload_index_first_parameter);

	eap_process_tlv_message_data_c message_data(m_am_tools);

	if (message_data.get_is_valid() == false)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
	}

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

	eap_state_notification_c * state = 0;

	eap_status_e status = message_data.read_parameter_data(parameters, parameter_index, &state);
	if (status != eap_status_ok)
	{
		delete state;
		state = 0;
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

	m_partner->state_notification(
		state);

	delete state;
	state = 0;

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);
}

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

eap_status_e eap_core_client_message_if_c::packet_data_crypto_keys(
	EAP_TEMPLATE_CONST eap_array_c<eap_tlv_header_c> * const parameters)
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

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

	u32_t parameter_index(eap_message_payload_index_first_parameter);

	eap_process_tlv_message_data_c message_data(m_am_tools);

	if (message_data.get_is_valid() == false)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
	}

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

	eap_am_network_id_c send_network_id(m_am_tools);

	eap_status_e status = message_data.read_parameter_data(parameters, parameter_index, &send_network_id);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

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

	++parameter_index;

	eap_type_value_e eap_type(eap_type_none);

	status = message_data.read_parameter_data(parameters, parameter_index, &eap_type);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

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

	++parameter_index;

	eap_master_session_key_c master_session_key(m_am_tools, eap_type);

	status = message_data.read_parameter_data(parameters, parameter_index, &master_session_key);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

	master_session_key.set_eap_type(eap_type);


	status = m_partner->packet_data_crypto_keys(
		&send_network_id,
		&master_session_key);

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

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

eap_status_e eap_core_client_message_if_c::restart_authentication(
	EAP_TEMPLATE_CONST eap_array_c<eap_tlv_header_c> * const parameters)
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

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

	u32_t parameter_index(eap_message_payload_index_first_parameter);

	eap_process_tlv_message_data_c message_data(m_am_tools);

	if (message_data.get_is_valid() == false)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
	}

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

	eap_am_network_id_c send_network_id(m_am_tools);

	eap_status_e status = message_data.read_parameter_data(parameters, parameter_index, &send_network_id);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

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

	++parameter_index;

	bool is_client_when_true(false);

	status = message_data.read_parameter_data(parameters, parameter_index, &is_client_when_true);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

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

	++parameter_index;

	bool force_clean_restart(false);

	status = message_data.read_parameter_data(parameters, parameter_index, &force_clean_restart);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

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

	++parameter_index;

	bool from_timer(false);

	status = message_data.read_parameter_data(parameters, parameter_index, &from_timer);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}


	status = m_partner->restart_authentication(
		&send_network_id,
		is_client_when_true,
		force_clean_restart,
		from_timer);

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

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

#if defined(USE_EAP_SIMPLE_CONFIG)

eap_status_e eap_core_client_message_if_c::new_protected_setup_credentials(
	EAP_TEMPLATE_CONST eap_array_c<eap_tlv_header_c> * const parameters)
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

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

	eap_status_e status(eap_status_process_general_error);

#if defined(USE_EAP_SIMPLE_CONFIG)

	u32_t parameter_index(eap_message_payload_index_first_parameter);

	eap_process_tlv_message_data_c message_data(m_am_tools);

	if (message_data.get_is_valid() == false)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
	}

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

	eap_array_c<simple_config_credential_c> credential_array(m_am_tools);

	status = message_data.read_parameter_data(parameters, parameter_index, &credential_array);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

	status = m_partner->save_simple_config_session(
		simple_config_state_simple_config_success,
		&credential_array,
		0,
		simple_config_Device_Password_ID_Default_PIN,
		0);

#endif //#if defined(USE_EAP_SIMPLE_CONFIG)

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

#endif // #if defined(USE_EAP_SIMPLE_CONFIG)

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

eap_status_e eap_core_client_message_if_c::complete_get_802_11_authentication_mode(
	EAP_TEMPLATE_CONST eap_array_c<eap_tlv_header_c> * const parameters)
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

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

	u32_t parameter_index(eap_message_payload_index_first_parameter);

	eap_process_tlv_message_data_c message_data(m_am_tools);

	if (message_data.get_is_valid() == false)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
	}

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

	eap_status_e completion_status(eap_status_process_general_error);

	eap_status_e status = message_data.read_parameter_data(parameters, parameter_index, eap_tlv_message_type_eap_status, &completion_status);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

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

	++parameter_index;

	eap_am_network_id_c receive_network_id(m_am_tools);

	status = message_data.read_parameter_data(parameters, parameter_index, &receive_network_id);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

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

	++parameter_index;

	eapol_key_802_11_authentication_mode_e mode(eapol_key_802_11_authentication_mode_none);

	status = message_data.read_parameter_data(parameters, parameter_index, &mode);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

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

	status = m_partner->complete_get_802_11_authentication_mode(
		completion_status,
		&receive_network_id,
		mode);

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

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

eap_status_e eap_core_client_message_if_c::complete_remove_eap_session(
	EAP_TEMPLATE_CONST eap_array_c<eap_tlv_header_c> * const parameters)
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

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

	u32_t parameter_index(eap_message_payload_index_first_parameter);

	eap_process_tlv_message_data_c message_data(m_am_tools);

	if (message_data.get_is_valid() == false)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
	}

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

	bool complete_to_lower_layer(false);

	eap_status_e status = message_data.read_parameter_data(parameters, parameter_index, &complete_to_lower_layer);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

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

	++parameter_index;

	eap_am_network_id_c receive_network_id(m_am_tools);

	status = message_data.read_parameter_data(parameters, parameter_index, &receive_network_id);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

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

	status = m_partner->complete_remove_eap_session(
		complete_to_lower_layer,
		&receive_network_id);

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

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

eap_status_e eap_core_client_message_if_c::process_error_message(
	const eap_status_e error_code,
	const eap_tlv_message_type_function_e function)
{
	eap_status_e status(eap_status_ok);

	{
		// Creates message data composed of Attribute-Value Pairs.
		eap_process_tlv_message_data_c message(m_am_tools);

		if (message.get_is_valid() == false)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
		}

		status = message.add_parameter_data(
			eap_tlv_message_type_error,
			static_cast<u32_t>(error_code));
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = message.add_parameter_data(function);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		status = process_message(&message);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}
	}

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);
}

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

eap_status_e eap_core_client_message_if_c::process_message_type_error(
	EAP_TEMPLATE_CONST eap_array_c<eap_tlv_header_c> * const parameters)
{
	eap_status_e status(eap_status_ok);

	eap_process_tlv_message_data_c message_data(m_am_tools);

	if (message_data.get_is_valid() == false)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
	}

	// Error payload is the first in this case.
	status = message_data.read_parameter_data(parameters, eap_message_payload_index_function, eap_tlv_message_type_error, &m_error_code);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

	// Fuction payload is the second in this case.
	status = message_data.read_parameter_data(parameters, eap_message_payload_index_first_parameter, &m_error_function);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

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

EAP_FUNC_EXPORT eap_status_e eap_core_client_message_if_c::send_data(const void * const data, const u32_t length)
{
	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_DEBUG(
		m_am_tools, 
		EAP_TRACE_FLAGS_MESSAGE_DATA, 
		(EAPL("eap_core_client_message_if_c::send_data(): this = 0x%08x => 0x%08x.\n"),
		this,
		dynamic_cast<abs_eap_base_timer_c *>(this)));

	EAP_TRACE_RETURN_STRING_FLAGS(m_am_tools, EAP_TRACE_FLAGS_MESSAGE_DATA, "returns: eap_core_client_message_if_c::send_data()");

	eap_status_e status(eap_status_process_general_error);

	// Parses message data composed of Attribute-Value Pairs.
	eap_process_tlv_message_data_c message(m_am_tools);

	if (message.get_is_valid() == false)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);
	}

	status = message.set_message_data(length, data);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

	EAP_TRACE_DATA_DEBUG(
		m_am_tools,
		EAP_TRACE_FLAGS_MESSAGE_DATA,
		(EAPL("eap_core_client_message_if_c::send_data()"),
		message.get_message_data(),
		message.get_message_data_length()));

	eap_array_c<eap_tlv_header_c> parameters(m_am_tools);

	status = message.parse_message_data(&parameters);
	if (status != eap_status_ok)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, status);
	}

	if (parameters.get_object_count() == 0)
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_parameter);
	}

	const eap_tlv_header_c * const function_header = parameters.get_object(eap_message_payload_index_function);
	if (function_header == 0
		|| (function_header->get_type() != eap_tlv_message_type_error
			&& function_header->get_type() != eap_tlv_message_type_function))
	{
		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
		return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_parameter);
	}

	if (function_header->get_type() == eap_tlv_message_type_error)
	{
		status = process_message_type_error(&parameters);
	}
	else // function_header->get_type() == eap_tlv_message_type_function
	{
		eap_tlv_message_type_function_e function(eap_tlv_message_type_function_none);

		status = message.get_parameter_data(function_header, &function);
		if (status != eap_status_ok)
		{
			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, status);
		}

		switch(function)
		{
		case eap_tlv_message_type_function_packet_send:
			status = packet_send(&parameters);
			break;
		case eap_tlv_message_type_function_state_notification:
			status = state_notification(&parameters);
			break;
		case eap_tlv_message_type_function_packet_data_crypto_keys:
			status = packet_data_crypto_keys(&parameters);
			break;
		case eap_tlv_message_type_function_restart_authentication:
			status = restart_authentication(&parameters);
			break;
#if defined(USE_EAP_SIMPLE_CONFIG)
		case eap_tlv_message_type_function_new_protected_setup_credentials:
			status = new_protected_setup_credentials(&parameters);
			break;
#endif // #if defined(USE_EAP_SIMPLE_CONFIG)
		case eap_tlv_message_type_function_complete_get_802_11_authentication_mode:
			status = complete_get_802_11_authentication_mode(&parameters);
			break;
		case eap_tlv_message_type_function_complete_remove_eap_session:
			status = complete_remove_eap_session(&parameters);
			break;
		default:
			EAP_TRACE_ERROR(
				m_am_tools,
				TRACE_FLAGS_DEFAULT,
				(EAPL("ERROR: send_data(): unknown function %d.\n"),
				 function));

			EAP_ASSERT_ANYWAY_TOOLS(m_am_tools);

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
			return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_parameter);
		};

		if (status != eap_status_ok)
		{
			(void) process_error_message(
				status,
				function);
		}
	}

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);
	return EAP_STATUS_RETURN(m_am_tools, status);
}

//--------------------------------------------------
// End.
