/*

* 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 352 

	#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_am_type_sim_symbian.h"

#include "abs_eap_am_crypto.h"

#include "abs_eap_am_mutex.h"

const u32_t SIM_IMSI_LENGTH = 8u;

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

// 

EAP_FUNC_EXPORT eap_am_type_sim_simulator_c::~eap_am_type_sim_simulator_c()

{

	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

}

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

// 

EAP_FUNC_EXPORT eap_am_type_sim_simulator_c::eap_am_type_sim_simulator_c(

	abs_eap_am_tools_c * const tools, abs_eap_am_type_sim_c * const partner)

: eap_am_type_sim_c(tools, partner)

, m_am_tools(tools)

{

	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

}

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

EAP_FUNC_EXPORT eap_status_e eap_am_type_sim_simulator_c::query_SIM_imsi(

	u8_t * const imsi, const u32_t max_length, u32_t * const imsi_length)

{

	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	u32_t ind = 0u;

	for (ind = 0u; ind < max_length; ind++)

	{

		imsi[ind] = static_cast<u8_t>(~ind;

	}

	*imsi_length = ind;

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

	return eap_status_process_general_error;

}

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

//

EAP_FUNC_EXPORT eap_status_e eap_am_type_sim_simulator_c::query_SIM_kc_and_sres(

	const u8_t * const imsi, const u32_t imsi_length,

	const u8_t * const rand, const u32_t /*rand_length*/,

	u8_t * const kc, u32_t * const kc_length,

	u8_t * const sres, u32_t * const sres_length)

{

	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	if (imsi == 0

		|| rand == 0

		|| kc == 0

		|| sres == 0)

	{

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_parameter);

	}

	EAP_ASSERT_ALWAYS(*kc_length >= 8u);

	EAP_ASSERT_ALWAYS(*sres_length >= 4u);

	eap_variable_data_c aes_context(m_am_tools);

	eap_variable_data_c encryption_IV(m_am_tools);

	eap_variable_data_c imsi_tmp(m_am_tools);

	u8_t tmp_buffer[16u];

	eap_status_e status = imsi_tmp.add_data(imsi, imsi_length);

	if (status != eap_status_ok)

	{

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return status;

	}

	status = imsi_tmp.add_data(imsi, imsi_length);

	if (status != eap_status_ok)

	{

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return status;

	}

	status = m_am_tools->get_crypto()->cbc_aes_set_encryption_key(

		&aes_context,

		//&encryption_IV,

		imsi_tmp.get_data(imsi_tmp.get_data_length()),

		imsi_tmp.get_data_length());

	if (status != eap_status_ok)

	{

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return status;

	}

	status = encryption_IV.init(m_am_tools->get_crypto()->aes_key_length());

	if (status != eap_status_ok)

	{

		return status;

	}

	encryption_IV.set_is_valid();

	encryption_IV.set_data_length(m_am_tools->get_crypto()->aes_key_length());

	m_am_tools->memset(

		encryption_IV.get_data(encryption_IV.get_data_length()),

		0,

		encryption_IV.get_data_length());

	status = m_am_tools->get_crypto()->cbc_aes_encrypt_data(

		&aes_context,

		&encryption_IV,

		rand,

		tmp_buffer,

		sizeof(tmp_buffer));

	m_am_tools->memmove(kc, tmp_buffer, *kc_length);

	eap_variable_data_c kc_tmp(m_am_tools);

	u8_t sres_tmp[16u];

	status = kc_tmp.add_data(kc, *kc_length);

	if (status != eap_status_ok)

	{

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return status;

	}

	status = kc_tmp.add_data(kc, *kc_length);

	if (status != eap_status_ok)

	{

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return status;

	}

	status = m_am_tools->get_crypto()->cbc_aes_set_encryption_key(

		&aes_context,

		//&encryption_IV,

		kc_tmp.get_data(kc_tmp.get_data_length()),

		kc_tmp.get_data_length());

	if (status != eap_status_ok)

	{

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return status;

	}

	status = encryption_IV.init(m_am_tools->get_crypto()->aes_key_length());

	if (status != eap_status_ok)

	{

		return status;

	}

	encryption_IV.set_is_valid();

	encryption_IV.set_data_length(m_am_tools->get_crypto()->aes_key_length());

	m_am_tools->memset(

		encryption_IV.get_data(encryption_IV.get_data_length()),

		0,

		encryption_IV.get_data_length());

	status = m_am_tools->get_crypto()->cbc_aes_encrypt_data(

		&aes_context,

		&encryption_IV,

		rand,

		sres_tmp,

		sizeof(sres_tmp));

	m_am_tools->memmove(sres, sres_tmp, *sres_length);

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

	return eap_status_ok;

}

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

eap_status_e eap_am_type_sim_simulator_c::query_SIM_triplets(

	//const eap_state_selector_c * const p_state_selector,

	const eap_variable_data_c * const p_imsi,

	eap_type_sim_triplet_array_c * const triplets)

{

	// NOTE if user needs to use imsi after return from query_SIM_triplets()

	// function that parameter MUST be copied using copy() member function of each parameter.

	// For example: saved_imsi = imsi->copy()

	eap_status_e status = eap_status_process_general_error;

	const u32_t triplet_count = 2u;

// End.