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PhotoRec: stricter check for Impulse audio .it file

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This commit is contained in:
Christophe Grenier 2013-03-23 14:50:48 +01:00
parent d1d77e56fd
commit de38e65c81
1 changed files with 36 additions and 14 deletions
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50
src/file_it.c
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@ -31,7 +31,6 @@
#include "filegen.h"
static void register_header_check_it(file_stat_t *file_stat);
static int header_check_it(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_it= {
.extension="it",
@ -43,21 +42,44 @@ const file_hint_t file_hint_it= {
.register_header_check=&register_header_check_it
};
static const unsigned char it_header[4]= {
'I' , 'M' , 'P' , 'M' };
static void register_header_check_it(file_stat_t *file_stat)
/* http://schismtracker.org/wiki/ITTECH.TXT */
struct impulse_header
{
register_header_check(0, it_header, sizeof(it_header), &header_check_it, file_stat);
}
uint32_t magic;
char song_name[26];
uint16_t PHiligt;
uint16_t OrdNum;
uint16_t InsNum;
uint16_t SmpNum;
uint16_t PatNum;
uint16_t Cwtv;
uint16_t Cmwt;
uint16_t Flags;
uint16_t Special;
uint8_t GV;
uint8_t MV;
uint8_t IS;
uint8_t IT;
uint8_t Sep;
uint8_t PWD;
uint16_t MsgLgth;
uint16_t MsgOff;
uint32_t Reserved;
char Chnl_Pan[64];
char Chnl_Vol[64];
} __attribute__ ((__packed__));
static int header_check_it(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)
{
if(memcmp(&buffer[0], it_header, sizeof(it_header))==0)
{
reset_file_recovery(file_recovery_new);
file_recovery_new->extension=file_hint_it.extension;
return 1;
}
return 0;
const struct impulse_header *header=(const struct impulse_header *)buffer;
if(header->Reserved!=0)
return 0;
reset_file_recovery(file_recovery_new);
file_recovery_new->extension=file_hint_it.extension;
return 1;
}
static void register_header_check_it(file_stat_t *file_stat)
{
register_header_check(0, "IMPM", 4, &header_check_it, file_stat);
}