/*

* 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 26 

	#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_header.h"

#include "eap_header_string.h"

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

EAP_FUNC_EXPORT eap_header_base_c::~eap_header_base_c()

{

}

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

// 

EAP_FUNC_EXPORT eap_header_base_c::eap_header_base_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)

{

	EAP_ASSERT(sizeof(eap_expanded_type_c) == sizeof(eap_static_expanded_type_c));

}

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

EAP_FUNC_EXPORT u32_t eap_header_base_c::get_header_length()

{

	return m_type_offset;

}

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

EAP_FUNC_EXPORT u32_t eap_header_base_c::get_ietf_type_field_length()

{

	return eap_expanded_type_c::m_ietf_type_size;

}

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

EAP_FUNC_EXPORT u32_t eap_header_base_c::get_expanded_type_field_length()

{

	return eap_expanded_type_c::m_eap_expanded_type_size;

}

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

EAP_FUNC_EXPORT u32_t eap_header_base_c::get_expanded_ietf_type_offset()

{

	return m_exp_ietf_type_offset;

}

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

EAP_FUNC_EXPORT u32_t eap_header_base_c::get_expanded_vendor_id_offset()

{

	return m_exp_vendor_id_offset;

}

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

EAP_FUNC_EXPORT u32_t eap_header_base_c::get_expanded_vendor_type_offset()

{

	return m_exp_vendor_type_offset;

}

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

EAP_FUNC_EXPORT u32_t eap_header_base_c::get_type_data_start_offset(

	const bool expanded_type_when_true)

{

	u32_t type_field_length(get_ietf_type_field_length());

	if (expanded_type_when_true == true)

	{

		type_field_length = get_expanded_type_field_length();

	}

	return get_header_length() + type_field_length;

}

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

EAP_FUNC_EXPORT eap_code_value_e eap_header_base_c::get_code() const

{

	const u8_t * const code_data = get_header_offset(m_code_offset, sizeof(u8_t));

	if (code_data != 0)

	{

		return static_cast<eap_code_value_e>(*code_data);

	}

	else

	{

		return eap_code_none;

	}

}

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

EAP_FUNC_EXPORT u8_t eap_header_base_c::get_identifier() const

{

	const u8_t * const identifier_data = get_header_offset(m_identifier_offset, sizeof(u8_t));

	if (identifier_data != 0)

	{

		return *identifier_data;

	}

	else

	{

		return 0xff;

	}

}

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

EAP_FUNC_EXPORT u16_t eap_header_base_c::get_length() const

{

	const u8_t * const length_data = get_header_offset(m_length_offset, sizeof(u16_t));

	if (length_data != 0)

	{

		return static_cast<u16_t>(static_cast<u16_t>(length_data[0]) << 8

								  | static_cast<u16_t>(length_data[1]));		

	}

	else

	{

		return 0ul;

	}

}

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

EAP_FUNC_EXPORT eap_type_ietf_values_e eap_header_base_c::get_ietf_type() const

{

	const u8_t * const ietf_type_field = get_data(eap_expanded_type_c::m_ietf_type_size);

	if (ietf_type_field == 0)

	{

		return eap_type_none;

	}

	else

	{

		return static_cast<eap_type_ietf_values_e>(*ietf_type_field);

	}

}

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

EAP_FUNC_EXPORT eap_type_value_e eap_header_base_c::get_type() const

{

	eap_type_value_e type(eap_type_none);

	if (get_length() > static_cast<u16_t>(get_header_length()))

	{

		eap_status_e status = eap_expanded_type_c::read_type(

			m_am_tools,

			0ul,

			get_data(get_data_length()),

			get_data_length(),

			&type);

		EAP_UNREFERENCED_PARAMETER(status);

		(void)EAP_STATUS_RETURN(m_am_tools, status);

	}

	return type;

}

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

EAP_FUNC_EXPORT u16_t eap_header_base_c::get_data_length() const

{

	if (get_length() > static_cast<u16_t>(get_header_length()))

	{

		return static_cast<u16_t>(get_length()-get_header_length());

	}

	return 0u;

}

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

EAP_FUNC_EXPORT u32_t eap_header_base_c::get_type_field_length() const

{

	eap_type_ietf_values_e p_type = get_ietf_type();

	if (eap_expanded_type_c::is_expanded_type(p_type) == true)

	{

		return eap_expanded_type_c::m_eap_expanded_type_size;

	}

	else

	{

		return eap_expanded_type_c::m_ietf_type_size;

	}

}

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

EAP_FUNC_EXPORT u16_t eap_header_base_c::get_type_data_length() const

{

	u32_t type_field_length(get_type_field_length());

	if (get_length() > static_cast<u16_t>(get_header_length()+type_field_length))

	{

		return static_cast<u16_t>(get_length()-(get_header_length()+type_field_length));

	}

	return 0u;

}

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

EAP_FUNC_EXPORT u8_t * eap_header_base_c::get_data_offset(

	const u32_t p_offset, const u32_t p_continuous_bytes) const

{

	if (get_length() >= static_cast<u16_t>(get_header_length()+p_offset+p_continuous_bytes))

	{

		u8_t * const data_begin = get_header_offset(m_type_offset, sizeof(u8_t));

		if (data_begin == 0)

		{

			return 0;

		}

		return &(data_begin[p_offset]);

	}

	else

	{

		return 0;

	}

}

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

EAP_FUNC_EXPORT u8_t * eap_header_base_c::get_type_data_offset(

	const u32_t p_offset, const u32_t p_continuous_bytes) const

{

	u32_t type_field_length(get_type_field_length());

	u32_t type_data_offset = get_header_length()+type_field_length;

	if (get_length() >= static_cast<u16_t>(type_data_offset+p_offset+p_continuous_bytes))

	{

		u8_t * const data_begin = get_header_offset(type_data_offset, sizeof(u8_t));

		if (data_begin == 0)

		{

			return 0;

		}

		return &(data_begin[p_offset]);

	}

	else

	{

		return 0;

	}

}

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

EAP_FUNC_EXPORT u8_t * eap_header_base_c::get_type_data(

	const u32_t p_continuous_bytes) const

{

	return get_type_data_offset(0u, p_continuous_bytes);

}

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

EAP_FUNC_EXPORT u8_t * eap_header_base_c::get_data(

	const u32_t p_continuous_bytes) const

{

	return get_data_offset(0u, p_continuous_bytes);

}

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

EAP_FUNC_EXPORT void eap_header_base_c::set_code(const eap_code_value_e p_code)

{

	u8_t * const code_data = get_header_offset(m_code_offset, sizeof(u8_t));

	EAP_ASSERT(code_data != 0);

	*code_data = static_cast<u8_t>(p_code);

}

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

EAP_FUNC_EXPORT void eap_header_base_c::set_identifier(const u8_t p_identifier)

{

	u8_t * const identifier_data = get_header_offset(m_identifier_offset, sizeof(u8_t));

	EAP_ASSERT(identifier_data != 0);

	*identifier_data = p_identifier;

}

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

EAP_FUNC_EXPORT void eap_header_base_c::set_length(

	const u16_t p_length,

	const bool /* expanded_type_when_true */)

{

	u8_t * const length_data = get_header_offset(m_length_offset, sizeof(u16_t));

	EAP_ASSERT(length_data != 0);

	length_data[0] = static_cast<u8_t>((p_length & 0xff00) >> 8);

	length_data[1] = static_cast<u8_t>(p_length & 0x00ff);

}

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

EAP_FUNC_EXPORT void eap_header_base_c::set_type_data_length(

	const u16_t p_length,

	const bool expanded_type_when_true)

{

	u32_t type_field_length(eap_expanded_type_c::m_ietf_type_size);

	if (expanded_type_when_true == true)

	{

		type_field_length = eap_expanded_type_c::m_eap_expanded_type_size;

	}

	set_length(

		static_cast<u16_t>(p_length+get_header_length()+type_field_length),

		expanded_type_when_true);

}

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

EAP_FUNC_EXPORT eap_status_e eap_header_base_c::set_type(

	const eap_type_value_e p_type,

	const bool expanded_type_when_true)

{

	return eap_expanded_type_c::write_type(

		m_am_tools,

		0ul,

		get_data(get_data_length()),

		get_data_length(),

		expanded_type_when_true,

		p_type);

}

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

EAP_FUNC_EXPORT eap_const_string eap_header_base_c::get_code_string() const

{

	return eap_header_string_c::get_eap_code_string(get_code());

}

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

EAP_FUNC_EXPORT eap_const_string eap_header_base_c::get_type_string() const

{

	if (get_length() <= get_header_length())

	{

		return EAPL("No EAP-type");

	}

	return eap_header_string_c::get_eap_type_string(get_type());

}

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

EAP_FUNC_EXPORT eap_status_e eap_header_base_c::check_header() const

{

	eap_status_e status = eap_status_process_general_error;

	if (get_code() < eap_code_request

		|| eap_code_failure < get_code())

	{

		status = eap_status_illegal_eap_code;

		EAP_TRACE_DEBUG(

			get_am_tools(),

			TRACE_FLAGS_DEFAULT,

			(EAPL("WARNING: eap_header_c::check_header(), illegal code field 0x%02x, eap_status_e %d\n"),

			 get_code(),

			 status));

	}

	else if ((get_code() == eap_code_request

			|| get_code() == eap_code_response)

		&& get_length() < get_header_length() + sizeof(u8_t))

	{

		// Packet is too short.

		status = eap_status_too_short_message;

		EAP_TRACE_DEBUG(

			get_am_tools(),

			TRACE_FLAGS_DEFAULT,

			(EAPL("WARNING: eap_header_c::check_header(), code 0x%02x, illegal length field 0x%02x, eap_status_e %d\n"),

			 get_code(),

			 get_length(),

			 status));

	}

	else

	{

		status = eap_status_ok;

	}

	return EAP_STATUS_RETURN_WARNING(m_am_tools, status);

}

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

// 

EAP_FUNC_EXPORT eap_header_rd_c::~eap_header_rd_c()

{

}

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

// 

EAP_FUNC_EXPORT eap_header_rd_c::eap_header_rd_c(

	abs_eap_am_tools_c * const tools,

	u8_t * const header_buffer,

	const u32_t header_buffer_length)

	: eap_header_base_c(tools, header_buffer, header_buffer_length)

	, m_am_tools(tools)

{

}

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

// 

EAP_FUNC_EXPORT eap_header_wr_c::~eap_header_wr_c()

{

}

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

// 

EAP_FUNC_EXPORT eap_header_wr_c::eap_header_wr_c(

	abs_eap_am_tools_c * const tools,

	u8_t * const header_buffer,

	const u32_t header_buffer_length)

	: eap_header_base_c(tools, header_buffer, header_buffer_length)

	, m_am_tools(tools)

{

}

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

EAP_FUNC_EXPORT u8_t * eap_header_wr_c::get_type_data(const u32_t p_continuous_bytes) const

{

	return const_cast<u8_t *>(eap_header_base_c::get_type_data(p_continuous_bytes));

}

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

EAP_FUNC_EXPORT u8_t * eap_header_wr_c::get_type_data_offset(

	const u32_t p_offset,

	const u32_t p_continuous_bytes) const

{

	return const_cast<u8_t *>(eap_header_base_c::get_type_data_offset(

		p_offset, p_continuous_bytes));

}

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

EAP_FUNC_EXPORT void eap_header_wr_c::reset_header(

	const u16_t buffer_length,

	const bool expanded_type_when_true)

{

	set_code(eap_code_none);

	set_identifier(0u);

	set_length(buffer_length, expanded_type_when_true);

}

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

// End.