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PhotoRec: stricter .nsf check

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This commit is contained in:
Christophe Grenier 2013-03-10 16:04:34 +01:00
parent 50f8149eff
commit 1f0ee68f00
1 changed files with 12 additions and 14 deletions
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26
src/file_nsf.c
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@ -31,7 +31,6 @@
#include "filegen.h" #include "filegen.h"
static void register_header_check_nsf(file_stat_t *file_stat); static void register_header_check_nsf(file_stat_t *file_stat);
static int header_check_nsf(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_nsf= { const file_hint_t file_hint_nsf= {
.extension="nsf", .extension="nsf",
@ -43,22 +42,21 @@ const file_hint_t file_hint_nsf= {
.register_header_check=&register_header_check_nsf .register_header_check=&register_header_check_nsf
}; };
static const unsigned char nsf_header[6]= { static int header_check_nsf(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)
0x1a, 0x00, 0x00, 0x04, 0x00, 0x00 {
}; /* I hope it's a valid check */
if(buffer[0x10]!=0x25 || buffer[0x11]!=0x85)
return 0;
reset_file_recovery(file_recovery_new);
file_recovery_new->extension=file_hint_nsf.extension;
return 1;
}
static void register_header_check_nsf(file_stat_t *file_stat) static void register_header_check_nsf(file_stat_t *file_stat)
{ {
static const unsigned char nsf_header[6]= {
0x1a, 0x00, 0x00, 0x04, 0x00, 0x00
};
register_header_check(0, nsf_header, sizeof(nsf_header), &header_check_nsf, file_stat); register_header_check(0, nsf_header, sizeof(nsf_header), &header_check_nsf, file_stat);
} }
static int header_check_nsf(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, nsf_header, sizeof(nsf_header))==0)
{
reset_file_recovery(file_recovery_new);
file_recovery_new->extension=file_hint_nsf.extension;
return 1;
}
return 0;
}