Page MenuHomePhabricator
Files F5158267

ewf_file_header.c
No OneTemporary
Actions

Size
3 KB
Referenced Files
None
Subscribers
None

ewf_file_header.c
View Options

/*
* EWF file header
*
* Copyright (c) 2006-2007, Joachim Metz <forensics@hoffmannbv.nl>,
* Hoffmann Investigations. All rights reserved.
*
* Refer to AUTHORS for acknowledgements.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the creator, related organisations, nor the names of
* its contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
* - All advertising materials mentioning features or use of this software
* must acknowledge the contribution by people stated in the acknowledgements.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER, COMPANY AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "libewf_includes.h"
#include "libewf_common.h"
#include "libewf_notify.h"
#include "ewf_file_header.h"
const uint8_t evf_file_signature[] = { 0x45, 0x56, 0x46, 0x09, 0x0D, 0x0A, 0xFF, 0x00 };
const uint8_t lvf_file_signature[] = { 0x4c, 0x56, 0x46, 0x09, 0x0D, 0x0A, 0xFF, 0x00 };
/* Validates the EWF file signature (EWF-E01, EWF-S01, EWF-L01)
* Returns 1 if the signature matches, 0 otherwise
*/
uint8_t ewf_file_header_check_signature( uint8_t *signature )
{
if( signature == NULL )
{
LIBEWF_WARNING_PRINT( "ewf_file_header_check_signature: invalid signature.\n" );
return( 0 );
}
if( libewf_common_memcmp( evf_file_signature, signature, sizeof( evf_file_signature ) ) == 0 )
{
return( 1 );
}
/* for EWF-L01 support
if( libewf_common_memcmp( lvf_file_signature, signature, sizeof( lvf_file_signature ) ) == 0 )
{
return( 1 );
}
*/
return( 0 );
}
/* Reads the file header from a file descriptor
* Returns the amount of bytes read, or -1 on error
*/
ssize_t ewf_file_header_read( EWF_FILE_HEADER *file_header, int file_descriptor )
{
ssize_t count = 0;
size_t size = EWF_FILE_HEADER_SIZE;
if( file_header == NULL )
{
LIBEWF_WARNING_PRINT( "ewf_file_header_read: invalid file header.\n" );
return( -1 );
}
count = libewf_common_read( file_descriptor, file_header, size );
if( count < (ssize_t) size )
{
LIBEWF_WARNING_PRINT( "ewf_file_header_read: unable to read file header.\n" );
return( -1 );
}
return( count );
}
/* Writes the file header to a file descriptor
* Returns the amount of bytes written, or -1 on error
*/
ssize_t ewf_file_header_write( EWF_FILE_HEADER *file_header, int file_descriptor )
{
ssize_t count = 0;
size_t size = EWF_FILE_HEADER_SIZE;
if( file_header == NULL )
{
LIBEWF_WARNING_PRINT( "ewf_file_header_write: invalid file header.\n" );
return( -1 );
}
count = libewf_common_write( file_descriptor, file_header, size );
if( count < (ssize_t) size )
{
LIBEWF_WARNING_PRINT( "ewf_file_header_write: error writing file header.\n" );
return( -1 );
}
return( count );
}

File Metadata

Mime Type
text/x-c
Expires
Thu, Jun 26, 5:59 AM (16 h, 2 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
1282118
Default Alt Text
ewf_file_header.c (3 KB)

Event Timeline