133 lines
4.7 KiB
C
133 lines
4.7 KiB
C
/*
|
|
|
|
File: file_axp.c
|
|
|
|
Copyright (C) 2015 Christophe GRENIER <grenier@cgsecurity.org>
|
|
|
|
This software is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License along
|
|
with this program; if not, write the Free Software Foundation, Inc., 51
|
|
Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
|
|
*/
|
|
|
|
#if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_axp)
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
#endif
|
|
#ifdef HAVE_STRING_H
|
|
#include <string.h>
|
|
#endif
|
|
#include <stdio.h>
|
|
#include "types.h"
|
|
#include "filegen.h"
|
|
|
|
/*@ requires valid_register_header_check(file_stat); */
|
|
static void register_header_check_axp(file_stat_t *file_stat);
|
|
|
|
const file_hint_t file_hint_axp= {
|
|
.extension="axp",
|
|
.description="Pinnacle Studio",
|
|
.max_filesize=PHOTOREC_MAX_FILE_SIZE,
|
|
.recover=1,
|
|
.enable_by_default=1,
|
|
.register_header_check=®ister_header_check_axp
|
|
};
|
|
|
|
const unsigned char axp_footer[34]= {
|
|
'<', 0, '/', 0, 'V', 0, 'F', 0,
|
|
'N', 0, 'G', 0, 'D', 0, 'o', 0,
|
|
'c', 0, 'u', 0, 'm', 0, 'e', 0,
|
|
'n', 0, 't', 0, '>', 0, 0x0d, 0,
|
|
0x0a, 0
|
|
};
|
|
|
|
/*@
|
|
@ requires valid_file_check_param(file_recovery);
|
|
@ ensures valid_file_check_result(file_recovery);
|
|
@ assigns *file_recovery->handle, errno, file_recovery->file_size;
|
|
@ assigns Frama_C_entropy_source;
|
|
@*/
|
|
static void file_check_axp(file_recovery_t *file_recovery)
|
|
{
|
|
file_search_footer(file_recovery, axp_footer, sizeof(axp_footer), 1);
|
|
}
|
|
|
|
/*@
|
|
@ requires file_recovery->data_check==&data_check_axp;
|
|
@ requires buffer_size >= 2*sizeof(axp_footer);
|
|
@ requires valid_data_check_param(buffer, buffer_size, file_recovery);
|
|
@ ensures valid_data_check_result(\result, file_recovery);
|
|
@ assigns file_recovery->calculated_file_size;
|
|
@*/
|
|
static data_check_t data_check_axp(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery)
|
|
{
|
|
unsigned int j;
|
|
/*@ assert file_recovery->calculated_file_size <= PHOTOREC_MAX_FILE_SIZE; */
|
|
/*@ assert file_recovery->file_size <= PHOTOREC_MAX_FILE_SIZE; */
|
|
/*@
|
|
@ loop assigns j, file_recovery->calculated_file_size;
|
|
@*/
|
|
for(j=buffer_size/2-sizeof(axp_footer);
|
|
j+sizeof(axp_footer) <= buffer_size;
|
|
j++)
|
|
{
|
|
if(buffer[j]=='<' && memcmp((const char *)&buffer[j], axp_footer, sizeof(axp_footer))==0)
|
|
{
|
|
file_recovery->calculated_file_size+=j+sizeof(axp_footer)-buffer_size/2;
|
|
return DC_STOP;
|
|
}
|
|
}
|
|
file_recovery->calculated_file_size=file_recovery->file_size+(buffer_size/2);
|
|
return DC_CONTINUE;
|
|
}
|
|
|
|
/*@
|
|
@ requires separation: \separated(&file_hint_axp, buffer+(..), file_recovery, file_recovery_new);
|
|
@ requires valid_header_check_param(buffer, buffer_size, safe_header_only, file_recovery, file_recovery_new);
|
|
@ ensures valid_header_check_result(\result, file_recovery_new);
|
|
@ assigns *file_recovery_new;
|
|
@*/
|
|
static int header_check_axp(const unsigned char *buffer, const unsigned int buffer_size, const unsigned int safe_header_only, const file_recovery_t *file_recovery, file_recovery_t *file_recovery_new)
|
|
{
|
|
reset_file_recovery(file_recovery_new);
|
|
file_recovery_new->extension=file_hint_axp.extension;
|
|
file_recovery_new->min_filesize=0x70+34;
|
|
file_recovery_new->file_check=&file_check_axp;
|
|
if(file_recovery_new->blocksize >= 0x34)
|
|
{
|
|
file_recovery_new->data_check=&data_check_axp;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static void register_header_check_axp(file_stat_t *file_stat)
|
|
{
|
|
static const unsigned char axp_header[0x70]= {
|
|
0xff, 0xfe, 0x3c, 0x00, 0x3f, 0x00, 'x' , 0x00,
|
|
'm' , 0x00, 'l' , 0x00, ' ' , 0x00, 'v' , 0x00,
|
|
'e' , 0x00, 'r' , 0x00, 's' , 0x00, 'i' , 0x00,
|
|
'o' , 0x00, 'n' , 0x00, 0x3d, 0x00, 0x22, 0x00,
|
|
'1' , 0x00, '.' , 0x00, '0' , 0x00, 0x22, 0x00,
|
|
' ' , 0x00, 'e' , 0x00, 'n' , 0x00, 'c' , 0x00,
|
|
'o' , 0x00, 'd' , 0x00, 'i' , 0x00, 'n' , 0x00,
|
|
'g' , 0x00, 0x3d, 0x00, 0x22, 0x00, 'U' , 0x00,
|
|
'T' , 0x00, 'F' , 0x00, 0x2d, 0x00, '1' , 0x00,
|
|
'6' , 0x00, 0x22, 0x00, 0x3f, 0x00, 0x3e, 0x00,
|
|
0x0d, 0x00, 0x0a, 0x00, 0x3c, 0x00, 'V' , 0x00,
|
|
'F' , 0x00, 'N' , 0x00, 'G' , 0x00, 'D' , 0x00,
|
|
'o' , 0x00, 'c' , 0x00, 'u' , 0x00, 'm' , 0x00,
|
|
'e' , 0x00, 'n' , 0x00, 't' , 0x00, 0x3e, 0x00,
|
|
};
|
|
register_header_check(0, axp_header, sizeof(axp_header), &header_check_axp, file_stat);
|
|
}
|
|
#endif
|