85 lines
3 KiB
C
85 lines
3 KiB
C
/*
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File: file_fh5.c
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Copyright (C) 2007 Christophe GRENIER <grenier@cgsecurity.org>
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Copyright (C) 2007 Peter Turczak <pspamt@netconsequence.de>
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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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#include <stdio.h>
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#include "types.h"
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#include "common.h"
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#include "filegen.h"
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struct fh5_header_s
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{
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unsigned char id[8];
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uint32_t datalen; /* Big Endian size w/o headers */
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} __attribute__ ((__packed__));
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typedef struct fh5_header_s fh5_header_t;
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static void register_header_check_fh5(file_stat_t *file_stat);
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static int header_check_fh5(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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static void file_check_fh5(file_recovery_t *file_recovery);
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const file_hint_t file_hint_fh5= {
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.extension="fh5",
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.description="Macromedia Freehand 5",
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.min_header_distance=0,
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.max_filesize=PHOTOREC_MAX_FILE_SIZE,
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.recover=1,
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.enable_by_default=1,
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.register_header_check=®ister_header_check_fh5
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};
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static const unsigned char fh5_header[8] = { 0x41, 0x47, 0x44, 0x31, 0xbe, 0xb8, 0xbb, 0xce };
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static void register_header_check_fh5(file_stat_t *file_stat)
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{
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register_header_check(0, fh5_header,sizeof(fh5_header), &header_check_fh5, file_stat);
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}
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static int header_check_fh5(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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const fh5_header_t *fh5_buffer=(const fh5_header_t *) buffer;
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if(memcmp(fh5_buffer->id,fh5_header,sizeof(fh5_header))==0)
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{
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reset_file_recovery(file_recovery_new);
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file_recovery_new->min_filesize=4096,
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file_recovery_new->calculated_file_size=be32(fh5_buffer->datalen);
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file_recovery_new->extension=file_hint_fh5.extension;
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file_recovery_new->file_check=file_check_fh5;
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// log_debug("header_check_fh5: Guessed length : %u\n", fh5_file_size);
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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 file_check_fh5(file_recovery_t *file_recovery)
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{
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if(file_recovery->file_size < file_recovery->calculated_file_size)
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file_recovery->file_size=0;
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else if(file_recovery->file_size> file_recovery->calculated_file_size+4096)
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file_recovery->file_size=file_recovery->calculated_file_size+4096;
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}
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