/*

* 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 143 

	#undef EAP_FILE_NUMBER_DATE 

	#define EAP_FILE_NUMBER_DATE 1127594498 

#endif //#if defined(USE_EAP_MINIMUM_RELEASE_TRACES)

#include <stdio.h>

#include "eap_am_file_input_symbian.h"

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

/**

 * The destructor of the eap_am_file_input_symbian_c class does nothing special.

 */

EAP_FUNC_EXPORT eap_am_file_input_symbian_c::~eap_am_file_input_symbian_c()

{

	file_close();

	delete m_input_buffer;

	m_input_buffer = 0;

}

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

/**

 * The constructor of the eap_am_file_input_symbian_c does nothing special.

 */

EAP_FUNC_EXPORT eap_am_file_input_symbian_c::eap_am_file_input_symbian_c(

	abs_eap_am_tools_c * const tools)

: m_am_tools(tools)

, m_is_valid(false)

, m_input_buffer(0)

, m_input_buffer_offset(0ul)

{

	m_input_buffer = new TBuf8<EAP_AM_FILE_INPUT_BUFFER_SIZE>;

	if (m_input_buffer == 0)

	{

		return;

	}

	set_is_valid();

}

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

/**

 * This function checks the file of name file_name exists.

 */

EAP_FUNC_EXPORT eap_status_e eap_am_file_input_symbian_c::file_exists(const eap_variable_data_c * const file_name)

{

	eap_am_file_input_symbian_c file(m_am_tools);

	eap_status_e status = file.file_open(

		file_name,

		eap_file_io_direction_read);

	if (status == eap_status_ok)

	{

		(void)file.file_close();

	}

	return EAP_STATUS_RETURN(m_am_tools, status);

}

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

EAP_FUNC_EXPORT eap_status_e eap_am_file_input_symbian_c::file_delete(

		const eap_variable_data_c * const /* file_name */)

{

	return EAP_STATUS_RETURN(m_am_tools, eap_status_not_supported);

}

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

/**

 * This function copies the file source_file_name to file target_file_name.

 */

EAP_FUNC_EXPORT eap_status_e eap_am_file_input_symbian_c::file_copy(

	const eap_variable_data_c * const target_file_name,

	const eap_variable_data_c * const source_file_name)

{

	eap_am_file_input_symbian_c read_file(m_am_tools);

	eap_status_e status = read_file.file_open(

		source_file_name,

		eap_file_io_direction_read);

	if (status != eap_status_ok)

	{

		EAP_TRACE_DEBUG(

			m_am_tools,

			TRACE_FLAGS_DEFAULT,

			(EAPL("ERROR: file_copy(): Cannot open source file  %s\n"),

			source_file_name->get_data(source_file_name->get_data_length())));

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return EAP_STATUS_RETURN(m_am_tools, status);

	}

	eap_am_file_input_symbian_c write_file(m_am_tools);

	status = write_file.file_open(

		target_file_name,

		eap_file_io_direction_write);

	if (status != eap_status_ok)

	{

		EAP_TRACE_DEBUG(

			m_am_tools,

			TRACE_FLAGS_DEFAULT,

			(EAPL("ERROR: file_copy(): Cannot open target file  %s\n"),

			target_file_name->get_data(target_file_name->get_data_length())));

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return EAP_STATUS_RETURN(m_am_tools, status);

	}

	eap_variable_data_c buffer(m_am_tools);

	status = buffer.init(EAP_AM_FILE_INPUT_BUFFER_SIZE);

	if (status != eap_status_ok)

	{

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return EAP_STATUS_RETURN(m_am_tools, status);

	}

	bool end_of_file(false);

	while(end_of_file == false)

	{

		status = read_file.file_read(&buffer);

		if (status == eap_status_end_of_file)

		{

			EAP_TRACE_DEBUG(

				m_am_tools,

				TRACE_FLAGS_DEFAULT,

				(EAPL("file_copy(): End of file.\n")));

			end_of_file = true;

		}

		else if (status != eap_status_ok)

		{

			eap_status_string_c status_string;

			EAP_TRACE_DEBUG(

				m_am_tools,

				TRACE_FLAGS_DEFAULT,

				(EAPL("ERROR: file_copy(): file_read(): status = %s\n"),

				status_string.get_status_string(status)));

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return EAP_STATUS_RETURN(m_am_tools, status);

		}

		EAP_TRACE_DATA_DEBUG(

			m_am_tools,

			TRACE_FLAGS_DEFAULT,

			(EAPL("read data"),

			 buffer.get_data(),

			 buffer.get_data_length()));

		status = write_file.file_write(&buffer);

		if (status != eap_status_ok)

		{

			eap_status_string_c status_string;

			EAP_TRACE_DEBUG(

				m_am_tools,

				TRACE_FLAGS_DEFAULT,

				(EAPL("ERROR: file_copy(): file_write(): status = %s\n"),

				status_string.get_status_string(status)));

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return EAP_STATUS_RETURN(m_am_tools, status);

		}

	} // while()

	write_file.file_close();

	read_file.file_close();

	EAP_TRACE_DEBUG(

		m_am_tools,

		TRACE_FLAGS_DEFAULT,

		(EAPL("file_copy(): OK\n")));

	return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);

}

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

/**

 * This function returns size of a file.

 */

EAP_FUNC_EXPORT u32_t eap_am_file_input_symbian_c::file_size()

{

	TInt aSize(0ul);

	TInt size_status = m_File.Size(aSize);

	if (size_status != KErrNone)

	{

		return 0ul;

	}

	return static_cast<u32_t>(aSize);

}

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

/**

 * This function reads data from file.

 * Maximum size read is the buffer size.

 */

EAP_FUNC_EXPORT eap_status_e eap_am_file_input_symbian_c::file_read(eap_variable_data_c * const buffer)

{

 	TPtr8 tmp(buffer->get_buffer(buffer->get_buffer_length()), buffer->get_buffer_length());

	TInt ReadStatus = m_File.Read(tmp);

	if (ReadStatus != KErrNone

		|| tmp.Length() == 0UL

		|| tmp.Ptr() == 0)

	{

		buffer->set_data_length(0ul);

		return EAP_STATUS_RETURN(m_am_tools, eap_status_end_of_file);

	}

	else

	{

		buffer->set_data_length(tmp.Length());

		return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);

	}

}

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

/**

 * This function write data to a file.

 * Maximum size write is the buffer size.

 */

EAP_FUNC_EXPORT eap_status_e eap_am_file_input_symbian_c::file_write(const eap_variable_data_c * const buffer)

{

 	TPtr8 tmp(buffer->get_data(), buffer->get_data_length());

	TInt WriteStatus = m_File.Write(tmp);

	if (WriteStatus != KErrNone)

	{

		return EAP_STATUS_RETURN(m_am_tools, eap_status_file_write_failed);

	}

	WriteStatus = m_File.Flush();

	if (WriteStatus != KErrNone)

	{

		return EAP_STATUS_RETURN(m_am_tools, eap_status_file_write_failed);

	}

	return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);

}

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

const u32_t EAP_MAX_FILENAME_LENGTH = 128;

/**

 * This function opens file of name file_name.

 */

EAP_FUNC_EXPORT eap_status_e eap_am_file_input_symbian_c::file_open(

	const eap_variable_data_c * const file_name,

	const eap_file_io_direction_e dir)

{

	TBuf8<EAP_MAX_FILENAME_LENGTH> tmpFilename((TUint8 *)file_name->get_data(file_name->get_data_length()));

	tmpFilename.SetLength(file_name->get_data_length());

	EAP_TRACE_DATA_DEBUG(

		m_am_tools, 

		TRACE_FLAGS_DEFAULT, 

		(EAPL("Configure file"), 

		 tmpFilename.PtrZ(), 

		 tmpFilename.Length()));

	TBuf<EAP_MAX_FILENAME_LENGTH> filename;

	filename.Copy(tmpFilename);

	EAP_TRACE_DATA_DEBUG(

		m_am_tools, 

		TRACE_FLAGS_DEFAULT, 

		(EAPL("Configure file"), 

		 filename.PtrZ(), 

		 filename.Size()));

	TInt result = m_file_session.Connect();	

	if (result != KErrNone)

	{

		EAP_TRACE_ERROR(m_am_tools,

				TRACE_FLAGS_DEFAULT,

				(EAPL("ERROR: configuration file %s not found, error %d\n"),

				 reinterpret_cast<char *>(file_name->get_data(file_name->get_data_length())),

				 result));

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return EAP_STATUS_RETURN(m_am_tools, eap_status_file_does_not_exist);

	}

	TUint aFileMode = EFileRead | EFileShareAny;

	if (dir == eap_file_io_direction_write)

	{

		aFileMode = EFileWrite;

	}

	TInt err = m_File.Open(m_file_session, filename, aFileMode);

	if (err != KErrNone)

	{

		if (aFileMode == EFileWrite)

		{

			// Try create a new file.

			err = m_File.Create(m_file_session, filename, aFileMode);

		}

		if (err != KErrNone)

		{

			EAP_TRACE_ERROR(m_am_tools,

					TRACE_FLAGS_DEFAULT,

					(EAPL("ERROR: configuration file %s not found, mode %d, error %d\n"),

					 reinterpret_cast<char *>(file_name->get_data(file_name->get_data_length())),

					 aFileMode,

					 err));

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return EAP_STATUS_RETURN(m_am_tools, eap_status_file_does_not_exist);

		}

	}

	m_input_buffer_offset = 0ul;

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

	return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);

}

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

/**

 * The function closes the file.

 */

EAP_FUNC_EXPORT eap_status_e eap_am_file_input_symbian_c::file_close()

{

	EAP_TRACE_BEGIN(m_am_tools, TRACE_FLAGS_DEFAULT);

	m_File.Close();

	m_file_session.Close();

	EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

	return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);

}

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

/**

 * This function reads n bytes from file to buffer.

 */

eap_status_e eap_am_file_input_symbian_c::file_read_buffer(

	eap_variable_data_c * const buffer,

	const u32_t required_bytes)

{

	u32_t read_bytes(0ul);

	eap_status_e status = buffer->set_data_length(0ul);

	if (status != eap_status_ok)

	{

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return EAP_STATUS_RETURN(m_am_tools, status);

	}

	bool file_end(false);

	while(file_end == false

		&& read_bytes < required_bytes)

	{

		if (m_input_buffer->Length() == m_input_buffer_offset)

		{

			TInt ReadStatus = m_File.Read(*m_input_buffer, EAP_AM_FILE_INPUT_BUFFER_SIZE);

			if (ReadStatus != KErrNone

				|| m_input_buffer->Length() == 0UL

				|| m_input_buffer->Ptr() == 0)

			{

				file_end = true;

			}

			m_input_buffer_offset = 0ul;

		}

		const u8_t * const character = m_input_buffer->Ptr() + m_input_buffer_offset;

		if (character == 0)

		{

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return EAP_STATUS_RETURN(m_am_tools, eap_status_end_of_file);

		}

		u32_t copied_bytes = required_bytes - read_bytes;

		if (copied_bytes > (m_input_buffer->Length() - m_input_buffer_offset))

		{

			copied_bytes = (m_input_buffer->Length() - m_input_buffer_offset);

		}

		status = buffer->add_data(character, copied_bytes);

		if (status != eap_status_ok)

		{

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return EAP_STATUS_RETURN(m_am_tools, status);

		}

		read_bytes += copied_bytes;

		m_input_buffer_offset += copied_bytes;

	} // while()

	if (file_end == true)

	{

		return EAP_STATUS_RETURN(m_am_tools, eap_status_end_of_file);

	}

	else

	{

		return EAP_STATUS_RETURN(m_am_tools, eap_status_ok);

	}

}

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

/**

 * This function reads line from file.

 */

EAP_FUNC_EXPORT eap_status_e eap_am_file_input_symbian_c::file_read_line(

	eap_variable_data_c * const line)

{

	if (line == 0

		|| line->get_is_valid() == false)

	{

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_parameter);

	}

	line->set_data_length(0ul);

	eap_variable_data_c buffer(m_am_tools);

	eap_status_e file_status(eap_status_ok);

	while (file_status == eap_status_ok)

	{

		file_status = file_read_buffer(

			&buffer,

			sizeof(u8_t));

		if (file_status != eap_status_ok

			&& file_status != eap_status_end_of_file)

		{

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return EAP_STATUS_RETURN(m_am_tools, file_status);

		}

		if (buffer.get_data_length() < sizeof(u8_t))

		{

			file_status = EAP_STATUS_RETURN(m_am_tools, eap_status_end_of_file);

			break;

		}

		const u8_t * const character = buffer.get_data(sizeof(u8_t));

		if (character == 0

			|| *character == '\n')

		{

			// This is the end of the line.

			break;

		}

		if (*character != '\r') // Windows files inludes these.

		{

			eap_status_e status = line->add_data(character, sizeof(*character));

			if (status != eap_status_ok)

			{

				EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

				return EAP_STATUS_RETURN(m_am_tools, status);

			}

		}

	} // while()

	{

		eap_status_e add_status = line->add_end_null();

		if (add_status != eap_status_ok)

		{

			EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

			return EAP_STATUS_RETURN(m_am_tools, add_status);

		}

	}

	// Note this should return the final file_status.

	return EAP_STATUS_RETURN(m_am_tools, file_status);

}

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

/**

 * This function reads word from file.

 */

eap_status_e eap_am_file_input_symbian_c::file_read_word(eap_variable_data_c * const word)

{

	if (word == 0

		|| word->get_is_valid() == false)

	{

		EAP_TRACE_END(m_am_tools, TRACE_FLAGS_DEFAULT);

		return EAP_STATUS_RETURN(m_am_tools, eap_status_illegal_parameter);

	}

	word->set_data_length(0ul);