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/*
File: file_dpx.c
Copyright (C) 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
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#include <stdio.h>
#include "types.h"
#include "filegen.h"
#include "common.h"
static void register_header_check_dpx(file_stat_t *file_stat);
const file_hint_t file_hint_dpx= {
.extension="dpx",
.description="Cineon image file/SMTPE DPX",
.max_filesize=10*1024*1024,
.recover=1,
.enable_by_default=1,
.register_header_check=®ister_header_check_dpx
};
/* Header information from http://www.cineon.com/ff_draft.php */
struct header_dpx
{
uint32_t magic_num; /* magic number 0x53445058 (SDPX) or 0x58504453 (XPDS) */
uint32_t offset; /* offset to image data in bytes */
char vers[8]; /* which header format version is being used (v1.0)*/
uint32_t file_size; /* file size in bytes */
uint32_t ditto_key; /* read time short cut - 0 = same, 1 = new */
uint32_t gen_hdr_size; /* generic header length in bytes */
uint32_t ind_hdr_size; /* industry header length in bytes */
uint32_t user_data_size; /* user-defined data length in bytes */
char file_name[100]; /* image file name */
char create_time[24]; /* file creation date "yyyy:mm:dd:hh:mm:ss:LTZ" */
char creator[100]; /* file creator's name */
char project[200]; /* project name */
char copyright[200]; /* right to use or copyright info */
uint32_t key; /* encryption ( FFFFFFFF = unencrypted ) */
char Reserved[104]; /* reserved field TBD (need to pad) */
} __attribute__ ((gcc_struct, __packed__));
static int header_check_dpx(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)
{
static const unsigned char ver10[8]= {'V', '1', '.', '0', 0x00, 0x00, 0x00, 0x00};
const struct header_dpx *dpx=(const struct header_dpx *)buffer;
if(memcmp(dpx->vers, ver10, sizeof(ver10))==0)
{
struct tm tm_time;
if(be32(dpx->file_size) < 19)
return 0;
memset(&tm_time, 0, sizeof(tm_time));
reset_file_recovery(file_recovery_new);
file_recovery_new->extension=file_hint_dpx.extension;
file_recovery_new->calculated_file_size=be32(dpx->file_size);
file_recovery_new->data_check=&data_check_size;
file_recovery_new->file_check=&file_check_size;
tm_time.tm_sec=(dpx->create_time[17]-'0')*10+(dpx->create_time[18]-'0'); /* seconds 0-59 */
tm_time.tm_min=(dpx->create_time[14]-'0')*10+(dpx->create_time[15]-'0'); /* minutes 0-59 */
tm_time.tm_hour=(dpx->create_time[11]-'0')*10+(dpx->create_time[12]-'0'); /* hours 0-23*/
tm_time.tm_mday=(dpx->create_time[8]-'0')*10+(dpx->create_time[9]-'0'); /* day of the month 1-31 */
tm_time.tm_mon=(dpx->create_time[5]-'0')*10+(dpx->create_time[6]-'0')-1; /* month 0-11 */
tm_time.tm_year=(dpx->create_time[0]-'0')*1000+(dpx->create_time[1]-'0')*100+
(dpx->create_time[2]-'0')*10+(dpx->create_time[3]-'0')-1900; /* year */
tm_time.tm_isdst = -1; /* unknown daylight saving time */
file_recovery_new->time=mktime(&tm_time);
return 1;
}
return 0;
}
static void register_header_check_dpx(file_stat_t *file_stat)
{
register_header_check(0, "SDPX", 4, &header_check_dpx, file_stat);
register_header_check(0, "XPDS", 4, &header_check_dpx, file_stat);
}
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