105 lines
3.5 KiB
C
105 lines
3.5 KiB
C
/*
|
|
|
|
File: file_wpd.c
|
|
|
|
Copyright (C) 1998-2007 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.
|
|
|
|
*/
|
|
|
|
#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"
|
|
#include "common.h"
|
|
|
|
static void register_header_check_wpd(file_stat_t *file_stat);
|
|
static int header_check_wpd(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);
|
|
|
|
const file_hint_t file_hint_wpd= {
|
|
.extension="wpd",
|
|
.description="Corel Documents",
|
|
.max_filesize=PHOTOREC_MAX_FILE_SIZE,
|
|
.recover=1,
|
|
.enable_by_default=1,
|
|
.register_header_check=®ister_header_check_wpd
|
|
};
|
|
|
|
struct wpd_hdr
|
|
{
|
|
unsigned char magic[4];
|
|
uint32_t documentOffset;
|
|
uint8_t productType;
|
|
uint8_t fileType;
|
|
uint8_t majorVersion;
|
|
uint8_t minorVersion;
|
|
uint16_t documentEncryption;
|
|
uint16_t indexHeaderOffset; /* 14 */
|
|
uint32_t unk;
|
|
uint32_t documentSize; /* 20: WP 6.1 or later ? */
|
|
} __attribute__ ((gcc_struct, __packed__));
|
|
|
|
static int header_check_wpd(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)
|
|
{
|
|
const struct wpd_hdr *hdr=(const struct wpd_hdr *)buffer;
|
|
if(hdr->fileType==0x0a && hdr->majorVersion==0x02)
|
|
{
|
|
/* WP 6 */
|
|
if(hdr->minorVersion == 0)
|
|
{
|
|
if(le32(hdr->documentOffset) < 20)
|
|
return 0;
|
|
reset_file_recovery(file_recovery_new);
|
|
file_recovery_new->extension=file_hint_wpd.extension;
|
|
file_recovery_new->min_filesize=le32(hdr->documentOffset);
|
|
return 1;
|
|
}
|
|
if( le32(hdr->documentOffset) < sizeof(struct wpd_hdr) ||
|
|
le32(hdr->documentSize) < le32(hdr->documentOffset))
|
|
return 0;
|
|
reset_file_recovery(file_recovery_new);
|
|
file_recovery_new->extension=file_hint_wpd.extension;
|
|
file_recovery_new->calculated_file_size=le32(hdr->documentSize);
|
|
file_recovery_new->data_check=&data_check_size;
|
|
file_recovery_new->file_check=&file_check_size;
|
|
return 1;
|
|
}
|
|
if( /* WP5 */
|
|
(hdr->fileType==0x0a && hdr->majorVersion==0x00) ||
|
|
/* WP MAC 2.x, 3.0-3.5, 3.5e */
|
|
(hdr->fileType==0x2c && (hdr->majorVersion>=0x02 && hdr->majorVersion<=0x04))
|
|
)
|
|
{
|
|
if(le32(hdr->documentOffset) < 20)
|
|
return 0;
|
|
reset_file_recovery(file_recovery_new);
|
|
file_recovery_new->extension=file_hint_wpd.extension;
|
|
file_recovery_new->min_filesize=le32(hdr->documentOffset);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void register_header_check_wpd(file_stat_t *file_stat)
|
|
{
|
|
static const unsigned char wpd_header[4]= {0xff, 'W','P','C'};
|
|
register_header_check(0, wpd_header,sizeof(wpd_header), &header_check_wpd, file_stat);
|
|
}
|