74 lines
2.8 KiB
C
74 lines
2.8 KiB
C
/*
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File: file_dta.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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#include <stdio.h>
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#include "types.h"
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#include "filegen.h"
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static void register_header_check_dta(file_stat_t *file_stat);
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static int header_check_dta(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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const file_hint_t file_hint_dta= {
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.extension="dta",
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.description="SPSS",
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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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.register_header_check=®ister_header_check_dta
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};
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static const unsigned char dta_header_71le[3]= {0x71, 0x02, 0x01};
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static const unsigned char dta_header_72le[3]= {0x72, 0x02, 0x01};
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static void register_header_check_dta(file_stat_t *file_stat)
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{
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register_header_check(0, dta_header_71le,sizeof(dta_header_71le), &header_check_dta, file_stat);
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register_header_check(0, dta_header_72le,sizeof(dta_header_72le), &header_check_dta, file_stat);
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}
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static int header_check_dta(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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/*
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ds_format 1 byte 0x71 or 0x72
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byteorder 1 byte 0x01 -> HILO, 0x02 -> LOHI
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filetype 1 byte 0x01
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unused 1 byte ?
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nvar (number of vars) 2 int encoded per byteorder
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nobs (number of obs) 4 int encoded per byteorder
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data_label 81 char dataset label, \0 terminated
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time_stamp 18 char date/time saved, \0 terminated
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*/
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if(memcmp(buffer,dta_header_71le,sizeof(dta_header_71le))==0 ||
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memcmp(buffer,dta_header_72le,sizeof(dta_header_72le))==0)
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{
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reset_file_recovery(file_recovery_new);
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file_recovery_new->extension=file_hint_dta.extension;
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return 1;
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}
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return 0;
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}
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