91 lines
3.5 KiB
C
91 lines
3.5 KiB
C
/*
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File: file_dpx.c
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Copyright (C) 2007 Christophe GRENIER <grenier@cgsecurity.org>
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This software is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write the Free Software Foundation, Inc., 51
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Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#ifdef HAVE_TIME_H
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#include <time.h>
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#endif
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#include <stdio.h>
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#include "types.h"
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#include "filegen.h"
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#include "common.h"
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static void register_header_check_dpx(file_stat_t *file_stat);
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const file_hint_t file_hint_dpx= {
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.extension="dpx",
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.description="Cineon image file/SMTPE DPX",
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.max_filesize=10*1024*1024,
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.recover=1,
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.enable_by_default=1,
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.register_header_check=®ister_header_check_dpx
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};
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/* Header information from http://www.cineon.com/ff_draft.php */
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struct header_dpx
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{
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uint32_t magic_num; /* magic number 0x53445058 (SDPX) or 0x58504453 (XPDS) */
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uint32_t offset; /* offset to image data in bytes */
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char vers[8]; /* which header format version is being used (v1.0)*/
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uint32_t file_size; /* file size in bytes */
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uint32_t ditto_key; /* read time short cut - 0 = same, 1 = new */
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uint32_t gen_hdr_size; /* generic header length in bytes */
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uint32_t ind_hdr_size; /* industry header length in bytes */
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uint32_t user_data_size; /* user-defined data length in bytes */
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char file_name[100]; /* image file name */
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char create_time[24]; /* file creation date "yyyy:mm:dd:hh:mm:ss:LTZ" */
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char creator[100]; /* file creator's name */
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char project[200]; /* project name */
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char copyright[200]; /* right to use or copyright info */
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uint32_t key; /* encryption ( FFFFFFFF = unencrypted ) */
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char Reserved[104]; /* reserved field TBD (need to pad) */
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} __attribute__ ((gcc_struct, __packed__));
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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)
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{
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static const unsigned char ver10[8]= {'V', '1', '.', '0', 0x00, 0x00, 0x00, 0x00};
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const struct header_dpx *dpx=(const struct header_dpx *)buffer;
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if(memcmp(dpx->vers, ver10, sizeof(ver10))==0)
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{
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if(be32(dpx->file_size) < 19)
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return 0;
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reset_file_recovery(file_recovery_new);
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file_recovery_new->extension=file_hint_dpx.extension;
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file_recovery_new->calculated_file_size=be32(dpx->file_size);
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file_recovery_new->data_check=&data_check_size;
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file_recovery_new->file_check=&file_check_size;
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file_recovery_new->time=get_time_from_YYYY_MM_DD_HH_MM_SS(dpx->create_time);
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return 1;
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}
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return 0;
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}
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static void register_header_check_dpx(file_stat_t *file_stat)
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{
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register_header_check(0, "SDPX", 4, &header_check_dpx, file_stat);
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register_header_check(0, "XPDS", 4, &header_check_dpx, file_stat);
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}
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