/*

* 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 588 

	#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_diameter_payloads.h"

#include "eap_diameter_avp_header.h"

#include "abs_eap_am_tools.h"

#include "eap_tools.h"

#include "eap_array_algorithms.h"

EAP_FUNC_EXPORT eap_diameter_variable_data_c::~eap_diameter_variable_data_c()

{

}

EAP_FUNC_EXPORT eap_diameter_variable_data_c::eap_diameter_variable_data_c(

	abs_eap_am_tools_c * const tools)

	: m_am_tools(tools)

	, m_data(tools)

	, m_payload_code(eap_diameter_avp_code_none)

	, m_is_mandatory(false)

{

}

EAP_FUNC_EXPORT eap_status_e eap_diameter_variable_data_c::set_buffer(

	const eap_diameter_avp_code_c current_payload,

	const bool is_mandatory,

	const u8_t * const buffer,

	const u32_t buffer_length,

	const bool free_buffer,

	const bool is_writable)

{

	eap_status_e status = m_data.set_buffer(

		buffer,

		buffer_length,

		free_buffer,

		is_writable);

	if (status != eap_status_ok)

	{

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return EAP_STATUS_RETURN(m_am_tools, status);

	}

	m_payload_code = current_payload;

	m_is_mandatory = is_mandatory;

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

	return EAP_STATUS_RETURN(m_am_tools, status);

}

EAP_FUNC_EXPORT eap_status_e eap_diameter_variable_data_c::add_data(

	const u8_t * const buffer,

	const u32_t buffer_length)

{

	eap_status_e status = m_data.add_data(

		buffer,

		buffer_length);

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

	return EAP_STATUS_RETURN(m_am_tools, status);

}

EAP_FUNC_EXPORT u32_t eap_diameter_variable_data_c::get_data_length() const

{

	return m_data.get_data_length();

}

EAP_FUNC_EXPORT u8_t * eap_diameter_variable_data_c::get_data(

	const u32_t data_length) const

{

	return m_data.get_data(data_length);

}

EAP_FUNC_EXPORT eap_variable_data_c * eap_diameter_variable_data_c::get_payload_buffer()

{

	return &m_data;

}

EAP_FUNC_EXPORT eap_diameter_avp_code_c eap_diameter_variable_data_c::get_payload_code() const

{

	return m_payload_code;

}

EAP_FUNC_EXPORT bool eap_diameter_variable_data_c::get_is_mandatory() const

{

	return m_is_mandatory;

}

EAP_FUNC_EXPORT void eap_diameter_variable_data_c::set_payload_code(

	const eap_diameter_avp_code_c code)

{

	m_payload_code = code;

}

EAP_FUNC_EXPORT eap_diameter_variable_data_c * eap_diameter_variable_data_c::copy() const

{

	eap_diameter_variable_data_c * new_data = new eap_diameter_variable_data_c(m_am_tools);

	if (new_data != 0)

	{

		eap_status_e status = new_data->get_payload_buffer()->add_data(&m_data);

		if (status != eap_status_ok)

		{

			delete new_data;

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			(void) EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);

			return 0;

		}

		new_data->set_payload_code(get_payload_code());

	}

	return new_data;

}

EAP_FUNC_EXPORT  void eap_diameter_variable_data_c::object_increase_reference_count()

{

}

EAP_FUNC_EXPORT eap_diameter_payloads_c::~eap_diameter_payloads_c()

{

}

#if defined(_WIN32) && !defined(__GNUC__)

	#pragma warning( disable : 4355 ) // 'this' : used in base member initializer list

#endif

EAP_FUNC_EXPORT eap_diameter_payloads_c::eap_diameter_payloads_c(

	abs_eap_am_tools_c * const tools)

	: m_am_tools(tools)

	  , m_payload_map(tools, this)

	  , m_read_payloads(tools)

	  , m_is_valid(false)

{

	m_is_valid = true;

}

EAP_FUNC_EXPORT eap_diameter_variable_data_c * eap_diameter_payloads_c::get_payload(

	const eap_diameter_avp_code_c current_payload)

{

	eap_variable_data_c selector(m_am_tools);

	eap_status_e status = selector.set_buffer(

		&current_payload,

		sizeof(current_payload),

		false,

		false);

	if (status != eap_status_ok)

	{

		return 0;

	}

	eap_diameter_variable_data_c *payload = m_payload_map.get_handler(&selector);

	return payload;

}

EAP_FUNC_EXPORT eap_status_e eap_diameter_payloads_c::check_payloads_existense(

	EAP_TEMPLATE_CONST eap_array_c<eap_diameter_avp_code_c> * const needed_payloads)

{

	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	for (u32_t ind = 0ul; ind < needed_payloads->get_object_count(); ind++)

	{

		const eap_diameter_avp_code_c * const required_avp_code = needed_payloads->get_object(ind);

		if (required_avp_code == 0)

		{

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);

		}

		if (get_payload(*required_avp_code) == 0)

		{

			EAP_TRACE_DEBUG(

				m_am_tools, 

				TRACE_FLAGS_DEFAULT, 

				(EAPL("not received AVP 0x%08x:0x%08x.\n"),

				 required_avp_code->get_vendor_id(),

				 required_avp_code->get_vendor_code()));

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return EAP_STATUS_RETURN(m_am_tools, eap_status_not_found);

		}

	}

	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_diameter_payloads_c::check_mandatory_payloads(

	EAP_TEMPLATE_CONST eap_array_c<eap_diameter_avp_code_c> * const used_payloads)

{

	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	for (u32_t ind = 0ul; ind < m_read_payloads.get_object_count(); ind++)

	{

		const eap_diameter_variable_data_c * const read_payload = m_read_payloads.get_object(ind);

		if (read_payload == 0)

		{

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);

		}

		if (read_payload->get_is_mandatory() == true)

		{

			eap_diameter_avp_code_c code = read_payload->get_payload_code();

			i32_t index = find_simple<eap_diameter_avp_code_c>(

				used_payloads,

				&code,

				m_am_tools);

			if (index < 0ul)

			{

				// ERROR: not used mandatory AVP.

				EAP_TRACE_ERROR(

					m_am_tools, 

					TRACE_FLAGS_DIAMETER_ERROR, 

					(EAPL("ERROR: not used mandatory AVP 0x%08x:0x%08x.\n"),

					 code.get_vendor_id(),

					 code.get_vendor_code()));

				EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

				return EAP_STATUS_RETURN(m_am_tools, eap_status_unsupported_payload);

			}

		}

	}

	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_diameter_payloads_c::add_payload(

	const eap_diameter_avp_code_c current_payload,

	const bool is_mandatory,

	const u8_t * const data,

	const u32_t data_length,

	const bool free_buffer,

	const bool is_writable,

	const bool fragments_allowed)

{

	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	eap_status_e status(eap_status_process_general_error);

	eap_diameter_variable_data_c *payload = get_payload(

		current_payload);

	if (payload != 0)

	{

		if (fragments_allowed == true)

		{

			// Add fragment to the end of the existing payload.

			status = payload->add_data(data, data_length);

			if (status != eap_status_ok)

			{

				EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

				return EAP_STATUS_RETURN(m_am_tools, status);

			}

		}

		else

		{

			// Cannot add fragment.

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_payload);

		}

	}

	else

	{

		eap_variable_data_c selector(m_am_tools);

		status = selector.set_buffer(

			&current_payload,

			sizeof(current_payload),

			false,

			false);

		if (status != eap_status_ok)

		{

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return EAP_STATUS_RETURN(m_am_tools, status);

		}

		eap_diameter_variable_data_c *payload = new eap_diameter_variable_data_c(

			m_am_tools);

		if (payload == 0)

		{

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return EAP_STATUS_RETURN(m_am_tools, eap_status_allocation_error);

		}

		status = payload->set_buffer(

			current_payload,

			is_mandatory,

			data,

			data_length,

			free_buffer,

			is_writable);

		if (status != eap_status_ok)

		{

			delete payload;

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return EAP_STATUS_RETURN(m_am_tools, status);

		}

		status = m_payload_map.add_handler(&selector, payload);

		if (status != eap_status_ok)

		{

			delete payload;

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return EAP_STATUS_RETURN(m_am_tools, status);

		}

		// Note the same payload object is added to m_read_payloads as to m_payload_map.

		status = m_read_payloads.add_object(payload, false);

		if (status != eap_status_ok)

		{

			// Note we do not delete payload here, because it has been added alredy to m_payload_map.

			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 bool eap_diameter_payloads_c::get_is_valid() const

{

	return m_is_valid;

}

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

//eap_diameter_payloads_c

EAP_FUNC_EXPORT eap_status_e eap_diameter_payloads_c::parse_generic_payload(

	const eap_diameter_avp_code_c payload_type,

	const eap_diameter_avp_header_c * const payload)

{

	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	EAP_DIAMETER_TRACE_PAYLOAD("Parsing payload", payload);

	eap_status_e status(eap_status_process_general_error);

	/*

	 *  AVP-header:

	 *  0                   1                   2                   3   

	 *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 

	 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

	 * |                           AVP Code                            |

	 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

	 * |V|M|r r r r r r|                  AVP Length                   |

	 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

	 * |                      Vendor-ID (optional)                     |

	 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

	 * |                             Data ....

	 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

	 */

	if (payload->get_length() < payload->get_header_length())

	{

		EAP_TRACE_ERROR(

			m_am_tools,

			TRACE_FLAGS_DIAMETER_ERROR,

			(EAPL("ERROR: eap_diameter_payloads_c::parse_generic_payload(0x%08x): ")

			 EAPL("current payload 0x%08x:0x%08x=%s, required length 0x%08x, packet length too less 0x%08x.\n"),

			 payload,

			 payload_type.get_vendor_id(),

			 payload_type.get_vendor_code(),

			 payload->get_avp_code_string(),

			 payload->get_header_length(),

			 payload->get_length()));

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);

	}

	u32_t data_length = payload->get_data_length();

	u8_t * const data

		= static_cast<u8_t *>(payload->get_data_offset(0ul, data_length));

	if (data == 0)

	{

		EAP_TRACE_ERROR(

			m_am_tools, 

			TRACE_FLAGS_DIAMETER_ERROR, 

			(EAPL("ERROR: eap_diameter_payloads_c::parse_generic_payload(0x%08x): ")

			 EAPL("current payload 0x%08x:0x%08x=%s, length 0x%04x, data buffer incorrect.\n"),

			 payload,

			 payload_type.get_vendor_id(),

			 payload_type.get_vendor_code(),

			 payload->get_avp_code_string(),

			 payload->get_data_length()));

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);

	}

	status = add_payload(

		payload_type,

		payload->get_avp_flag_mandatory_avp(),

		data,

		data_length,

		false,

		false,

		true); // This can be fragmented.

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

	return EAP_STATUS_RETURN(m_am_tools, status);

}

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

//

EAP_FUNC_EXPORT eap_status_e eap_diameter_payloads_c::parse_diameter_payloads(

	const eap_diameter_avp_header_c * const p_payload,

	u32_t * const buffer_length)

{

	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	eap_diameter_avp_header_c payload(

		m_am_tools,

		p_payload->get_header_buffer(*buffer_length),

		*buffer_length); // Const correctness is gone.

	eap_diameter_avp_code_c current_payload = payload.get_avp_code();

	eap_status_e status = eap_status_header_corrupted;

	if (payload.get_is_valid() == true

		&& current_payload != eap_diameter_avp_code_none)

	{

		if (*buffer_length < payload.get_length())

		{

			EAP_TRACE_ERROR(

				m_am_tools,

				TRACE_FLAGS_DIAMETER_ERROR,

				(EAPL("ERROR: eap_diameter_payloads_c::parse_diameter_payloads(0x%08x): ")

				 EAPL("current payload 0x%08x:0x%08x=%s, data length 0x%04x, buffer length 0x%04x.\n"),

				 payload.get_header_buffer(0ul),

				 current_payload.get_vendor_id(),

				 current_payload.get_vendor_code(),

				 payload.get_avp_code_string(),

				 payload.get_data_length(),

				 *buffer_length));

			EAP_TRACE_ERROR(

				m_am_tools,

				TRACE_FLAGS_DIAMETER_ERROR,

				(EAPL("ERROR: eap_diameter_payloads_c::parse_diameter_payloads(): ")

				 EAPL("DIAMETER-payload header is corrupted.\n")));

			EAP_TRACE_DATA_ERROR(m_am_tools, TRACE_FLAGS_DEFAULT, (EAPL("payload"),

				payload.get_header_buffer(*buffer_length),

				*buffer_length));

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);

		}

		status = parse_generic_payload(current_payload, &payload);

		if (status != eap_status_ok)

		{

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return EAP_STATUS_RETURN(m_am_tools, status);

		}

		u32_t prev_avp_length = payload.get_length() + payload.get_padding_length();

		if (*buffer_length < prev_avp_length)

		{

			// We do have only the current payload. So not padding is included.

			prev_avp_length = payload.get_length();

		}

		EAP_ASSERT_ALWAYS(*buffer_length >= prev_avp_length);

		*buffer_length -= prev_avp_length;

		while(*buffer_length >= payload.get_header_length()

			&& payload.get_is_valid() == true

			&& payload.get_header_buffer_length() >= payload.get_length())

		{

			payload.set_header_buffer(

					payload.get_next_header(),

					payload.get_header_buffer_length() - prev_avp_length);

			if (payload.get_is_valid() == false)

			{

				EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

				return EAP_STATUS_RETURN(m_am_tools, eap_status_header_corrupted);

			}

			current_payload = payload.get_avp_code();

			if (*buffer_length < payload.get_length())

			{

				EAP_TRACE_ERROR(

					m_am_tools,

					TRACE_FLAGS_DIAMETER_ERROR,

					(EAPL("ERROR: eap_diameter_payloads_c::parse_diameter_payloads(0x%08x): ")

					 EAPL("current payload 0x%08x:0x%08x=%s, payload data length 0x%04x, payload length 0x%04x, buffer length 0x%04x.\n"),

					 payload.get_header_buffer(0ul),

					 current_payload.get_vendor_id(),

					 current_payload.get_vendor_code(),