/*

* 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 194 

	#undef EAP_FILE_NUMBER_DATE 

	#define EAP_FILE_NUMBER_DATE 1127594498 

#endif //#if defined(USE_EAP_MINIMUM_RELEASE_TRACES)

#define EAP_AM_MEMORY_GUARD

	#include "eap_am_memory.h"

#undef EAP_AM_MEMORY_GUARD

#include "eap_tools.h"

#include "eap_am_type_gsmsim_symbian_simulator.h"

#include "eap_am_crypto.h"

#include "abs_eap_am_mutex.h"

const u32_t SIM_IMSI_LENGTH = 15u;

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

// 

EAP_FUNC_EXPORT eap_am_type_gsmsim_simulator_c::~eap_am_type_gsmsim_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_gsmsim_simulator_c::eap_am_type_gsmsim_simulator_c(

	abs_eap_am_tools_c * const tools,

	abs_eap_base_type_c * const partner,

	const CEapPluginInterface::TIndexType aIndexType,

	const TInt aIndex)

: eap_am_type_gsmsim_c(tools)

, m_am_tools(tools)

, m_partner(partner)

, saved_pseudonym(tools)

, m_is_valid(eap_boolean_true)

{

	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_UNREFERENCED_PARAMETER(aIndexType);

	EAP_UNREFERENCED_PARAMETER(aIndex);

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

}

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

EAP_FUNC_EXPORT eap_status_e eap_am_type_gsmsim_simulator_c::store_reauth_keys(

	const eap_variable_data_c * const XKEY,

	const eap_variable_data_c * const K_aut,

	const eap_variable_data_c * const K_encr)

{

	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_UNREFERENCED_PARAMETER(XKEY);

	EAP_UNREFERENCED_PARAMETER(K_aut);

	EAP_UNREFERENCED_PARAMETER(K_encr);

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

	return eap_status_ok;

}

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

const eap_status_e eap_am_type_gsmsim_simulator_c::authentication_finished(

	const eap_boolean_e true_when_successfull,

	const eap_gsmsim_authentication_type_e authentication_type)

{

	EAP_UNREFERENCED_PARAMETER(true_when_successfull);

	EAP_UNREFERENCED_PARAMETER(authentication_type);

    eap_status_e status = eap_status_ok;

	return status;

}

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

EAP_FUNC_EXPORT eap_status_e eap_am_type_gsmsim_simulator_c::query_reauth_parameters(

	eap_variable_data_c * const reauth_XKEY,

	eap_variable_data_c * const reauth_K_aut,

	eap_variable_data_c * const reauth_K_encr,

	u32_t * const reauth_counter)

{

	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_UNREFERENCED_PARAMETER(reauth_XKEY);

	EAP_UNREFERENCED_PARAMETER(reauth_K_aut);

	EAP_UNREFERENCED_PARAMETER(reauth_K_encr);

	EAP_UNREFERENCED_PARAMETER(reauth_counter);

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

	return EAP_STATUS_RETURN(m_am_tools, eap_status_not_supported);

}

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

//

EAP_FUNC_EXPORT eap_status_e eap_am_type_gsmsim_simulator_c::increase_reauth_counter()

{

	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	eap_status_e status = eap_status_not_supported;

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

	return EAP_STATUS_RETURN(m_am_tools, status);

}

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

EAP_FUNC_EXPORT const eap_status_e eap_am_type_gsmsim_simulator_c::configure()

{

	return eap_status_ok;

}

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

EAP_FUNC_EXPORT eap_status_e eap_am_type_gsmsim_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);

	const char tmp_imsi[] = "244070100000001";

	*imsi_length = m_am_tools->strlen(tmp_imsi);

	if (*imsi_length > max_length)

	{

		// ERROR, too short buffer.

		*imsi_length = 0u;

		return eap_status_allocation_error;

	}

	m_am_tools->memcpy(imsi, tmp_imsi, m_am_tools->strlen(tmp_imsi));

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

	return eap_status_ok;

}

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

EAP_FUNC_EXPORT eap_status_e eap_am_type_gsmsim_simulator_c::store_pseudonym_id(

	const eap_am_network_id_c * const /*network_id*/,

	const eap_variable_data_c * const pseudonym)

{

	return saved_pseudonym.set_copy_of_buffer(pseudonym);

}

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

EAP_FUNC_EXPORT eap_status_e eap_am_type_gsmsim_simulator_c::store_reauthentication_id(

	const eap_am_network_id_c * const /*network_id*/,

	const eap_variable_data_c * const /* reauthentication_id */)

{

	return eap_status_ok;

}

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

EAP_FUNC_EXPORT eap_status_e eap_am_type_gsmsim_simulator_c::query_SIM_IMSI_or_pseudonym_or_reauthentication_id(

	const eap_boolean_e must_be_synchronous,

	eap_variable_data_c * const IMSI,

	eap_variable_data_c * const pseudonym_identity,

	eap_variable_data_c * const /* reauthentication_identity */)

{

	EAP_UNREFERENCED_PARAMETER(must_be_synchronous);

	eap_status_e status = eap_status_process_general_error;

	if (IMSI == 0

		|| pseudonym_identity == 0)

	{

		// Something is really wrong.

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return eap_status_process_general_error;

	}

	if (IMSI->get_is_valid() == eap_boolean_false

		|| IMSI->get_buffer_length() < SIM_IMSI_LENGTH)

	{

		IMSI->init(SIM_IMSI_LENGTH);

		IMSI->set_is_valid();

	}

	if (saved_pseudonym.get_is_valid() == eap_boolean_true)

	{

		// We have stored pseudonym_identity.

		if (pseudonym_identity == 0)

		{

			// Something is really wrong.

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return eap_status_process_general_error;

		}

		pseudonym_identity->set_copy_of_buffer(&saved_pseudonym);

	}

	{

		u32_t imsi_length = 0u;

		status = query_SIM_imsi(

			IMSI->get_data(SIM_IMSI_LENGTH),

			SIM_IMSI_LENGTH,

			&imsi_length);

		if (status != eap_status_ok

			|| imsi_length != SIM_IMSI_LENGTH)

		{

			return status;

		}

		IMSI->set_data_length(imsi_length);

	}

	if (must_be_synchronous == eap_boolean_false)

	{

		status = get_am_partner()->complete_SIM_IMSI_or_pseudonym_or_reauthentication_id_query(

			IMSI,

			pseudonym_identity,

			0);

		if (status == eap_status_ok)

		{

			status = eap_status_completed_request;

		}

	}

	return status;

}

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

//

eap_status_e eap_am_type_gsmsim_simulator_c::cancel_SIM_IMSI_or_pseudonym_or_reauthentication_id_query()

{

	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

	return EAP_STATUS_RETURN(m_am_tools, eap_status_not_supported);

}

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

//

EAP_FUNC_EXPORT eap_status_e eap_am_type_gsmsim_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);

	EAP_UNREFERENCED_PARAMETER(rand_length);

	EAP_ASSERT_ALWAYS(rand_length == SIM_RAND_LENGTH);

	EAP_ASSERT_ALWAYS(*kc_length == SIM_KC_LENGTH);

	EAP_ASSERT_ALWAYS(*sres_length == SIM_SRES_LENGTH);

	const u8_t test_Ki[SIM_RAND_LENGTH] = {0xA5,0xA5,0xA5,0xA5,0xA5,0xA5,0xA5,0xA5,0xA5,0xA5,0xA5,0xA5,0xA5,0xA5,0xA5,0xA5};

	u8_t tmp[SIM_KC_LENGTH + SIM_SRES_LENGTH];

	m_am_tools->memset(tmp, 0, sizeof(tmp));

	u32_t i = 0;

	for(i = 0; i < (SIM_KC_LENGTH + SIM_SRES_LENGTH); i++)

	{

		tmp[i] = (u8_t)(rand[i] ^ test_Ki[i]);

	}

	m_am_tools->memcpy(sres, tmp, *sres_length);

	m_am_tools->memcpy(kc, tmp + *sres_length, *kc_length);

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

	return eap_status_ok;

}

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

//

EAP_FUNC_EXPORT eap_status_e eap_am_type_gsmsim_simulator_c::handle_gsmsim_notification(

	eap_gsmsim_triplet_status_e /* gsmsim_notification_code */)

{

	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

	return EAP_STATUS_RETURN(m_am_tools, eap_status_not_supported);

}

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

#if defined(USE_EAP_TYPE_SERVER_GSMSIM)

EAP_FUNC_EXPORT eap_status_e eap_am_type_gsmsim_simulator_c::query_SIM_triplets(

	const eap_boolean_e must_be_synchronous,

	const eap_variable_data_c * const /* p_username */,

	eap_variable_data_c * const /* p_imsi */,

	eap_type_sim_triplet_array_c * const triplets,

	eap_type_gsmsim_identity_type * const type)

{

	EAP_UNREFERENCED_PARAMETER(must_be_synchronous);

	EAP_UNREFERENCED_PARAMETER(type);

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

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

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

	//              saved_state_selector = state_selector->copy()

	eap_status_e status = eap_status_process_general_error;

	const u32_t rand_length = 16u;

	const u8_t test_rand[] = "0123456789abcdef";

	const u8_t test_Ki[rand_length] = {0xA5,0xA5,0xA5,0xA5,0xA5,0xA5,0xA5,0xA5,

										0xA5,0xA5,0xA5,0xA5,0xA5,0xA5,0xA5,0xA5};

	const u32_t triplet_count = 2u;

	u32_t ind;

	u32_t i = 0;

	if (triplets == 0)

	{

		// Something is really wrong.

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return eap_status_process_general_error;

	}

	triplets->set_triplet_count(triplet_count);

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

	{

		eap_type_saesim_triplet_c *tripl = triplets->get_triplet(m_am_tools, ind);

		u8_t tmp[rand_length] = {0,};

		status = tripl->get_rand()->set_copy_of_buffer((u8_t *)test_rand, 16);

		if (status != eap_status_ok)

		{

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return status;

		}

		status = tripl->get_kc()->init(SIM_KC_LENGTH);

		if (status != eap_status_ok)

		{

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return status;

		}

		tripl->get_kc()->set_is_valid();

		tripl->get_kc()->set_data_length(SIM_KC_LENGTH);

		status = tripl->get_sres()->init(SIM_SRES_LENGTH);

		if (status != eap_status_ok)

		{

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return status;

		}

		tripl->get_sres()->set_is_valid();

		tripl->get_sres()->set_data_length(SIM_SRES_LENGTH);

		for (i = 0; i < (SIM_KC_LENGTH + SIM_SRES_LENGTH); i++)

		{

			tmp[i] = (u8_t)(test_rand[i] ^ test_Ki[i]);

		}

		tripl->get_sres()->set_copy_of_buffer(tmp, SIM_SRES_LENGTH);

		tripl->get_kc()->set_copy_of_buffer(tmp + SIM_SRES_LENGTH, SIM_KC_LENGTH);

	}

	return status;

}

#endif //#if defined(USE_EAP_TYPE_SERVER_GSMSIM)

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

#if defined(USE_EAP_TYPE_SERVER_GSMSIM)

//

EAP_FUNC_EXPORT eap_status_e eap_am_type_gsmsim_simulator_c::cancel_SIM_triplets_query()

{

	EAP_TRACE_ERROR(m_am_tools, TRACE_FLAGS_DEFAULT, (EAPL("ERROR: cancel_SIM_triplets_query() not supported here..\n")));

	return EAP_STATUS_RETURN(m_am_tools, eap_status_not_supported);

}

#endif //#if defined(USE_EAP_TYPE_SERVER_GSMSIM)

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

//

EAP_FUNC_EXPORT eap_status_e eap_am_type_gsmsim_simulator_c::query_SIM_kc_sres(

	const eap_boolean_e must_be_synchronous,

	//const eap_variable_data_c * const p_imsi,

	const eap_variable_data_c * const p_n_rands,

	eap_variable_data_c * const n_kc,

	eap_variable_data_c * const n_sres)

{

	EAP_UNREFERENCED_PARAMETER(must_be_synchronous);

	// NOTE if user needs to use state_selector or n_rands after return from query_SIM_kc_sres()

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

	// For example: saved_n_rands = n_rands->copy()

	//              saved_state_selector = state_selector->copy()

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

	if (n_kc == 0

		|| n_sres == 0

		|| p_n_rands == 0)

	{

		// Something is really wrong.

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return EAP_STATUS_RETURN(m_am_tools, eap_status_process_general_error);

	}

	eap_status_e status = eap_status_process_general_error;

	eap_variable_data_c copy_of_imsi(m_am_tools);

	// First we must query IMSI.

	u32_t imsi_length = 0u;

	copy_of_imsi.init(SIM_IMSI_LENGTH);

	copy_of_imsi.set_is_valid();

	status = query_SIM_imsi(

		copy_of_imsi.get_data(copy_of_imsi.get_data_length()),

		SIM_IMSI_LENGTH,

		&imsi_length);

	if (status != eap_status_ok

		|| imsi_length != SIM_IMSI_LENGTH)

	{

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return status;

	}

	copy_of_imsi.set_data_length(imsi_length);

	eap_variable_data_c *copy_of_n_rands = p_n_rands->copy();

	if (copy_of_n_rands == 0)

	{

		return eap_status_allocation_error;

	}

	u32_t kc_length = SIM_KC_LENGTH;

	u32_t sres_length = SIM_SRES_LENGTH;

	u32_t count = copy_of_n_rands->get_data_length() / SIM_RAND_LENGTH;

	if (n_kc->get_is_valid() == eap_boolean_false

		|| n_kc->get_buffer_length() < count*SIM_KC_LENGTH)

	{

		n_kc->init(count*SIM_KC_LENGTH);

		n_kc->set_is_valid();

	}

	if (n_sres->get_is_valid() == eap_boolean_false

		|| n_sres->get_buffer_length() < count*SIM_SRES_LENGTH)

	{

		n_sres->init(count*SIM_SRES_LENGTH);

		n_sres->set_is_valid();

	}

	u8_t *rand = copy_of_n_rands->get_data(copy_of_n_rands->get_data_length());

	u8_t *kc = n_kc->get_data(n_kc->get_data_length());

	u8_t *sres = n_sres->get_data(n_sres->get_data_length());

	for (u32_t ind = 0u; ind < count; ind++)

	{

		kc_length = SIM_KC_LENGTH;

		sres_length = SIM_SRES_LENGTH;

		query_SIM_kc_and_sres(

			copy_of_imsi.get_data(copy_of_imsi.get_data_length()),

			copy_of_imsi.get_data_length(),

			rand+(ind*SIM_RAND_LENGTH),

			SIM_RAND_LENGTH,

			kc+(ind*SIM_KC_LENGTH),

			&kc_length,

			sres+(ind*SIM_SRES_LENGTH),

			&sres_length);

	}

	n_kc->set_data_length(count*SIM_KC_LENGTH);

	n_sres->set_data_length(count*SIM_SRES_LENGTH);

	status = get_am_partner()->complete_SIM_kc_sres(

		copy_of_n_rands,

		n_kc,

		n_sres);

	delete copy_of_n_rands;

	if (status == eap_status_ok)

	{

		status = eap_status_completed_request;

	}

	return status;

}

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

//

eap_status_e eap_am_type_gsmsim_simulator_c::cancel_SIM_kc_sres_query()