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src/file_z2d.c: add Frama-C annotations

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This commit is contained in:
Christophe Grenier 2021-03-15 19:08:34 +01:00
parent 6360b01e5c
commit 62be5e5ed1
1 changed files with 21 additions and 15 deletions
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20
src/file_z2d.c
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@ -31,6 +31,7 @@
#include "types.h"
#include "filegen.h"
/*@ requires \valid(file_stat); */
static void register_header_check_z2d(file_stat_t *file_stat);
const file_hint_t file_hint_z2d = {
@ -42,15 +43,19 @@ const file_hint_t file_hint_z2d= {
.register_header_check = &register_header_check_z2d
};
static const unsigned char z2d_header[2]= { 0xc3, 0x40 };
/*@
@ requires buffer_size >= 0x4a;
@ requires \valid_read(buffer+(0..buffer_size-1));
@ requires valid_file_recovery(file_recovery);
@ requires \valid(file_recovery_new);
@ requires file_recovery_new->blocksize > 0;
@ requires separation: \separated(&file_hint_z2d, buffer+(..), file_recovery, file_recovery_new);
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@ assigns *file_recovery_new;
@*/
static int header_check_z2d(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(buffer[0x28]==0xc3 && buffer[0x29]==0x40 &&
buffer[0x30]==0xc3 && buffer[0x31]==0x40 &&
buffer[0x38]==0xbf && buffer[0x39]==0x40 &&
buffer[0x40]==0xbf && buffer[0x41]==0x40 &&
buffer[0x48]==0xb7 && buffer[0x49]==0x40)
if(buffer[0x28] == 0xc3 && buffer[0x29] == 0x40 && buffer[0x30] == 0xc3 && buffer[0x31] == 0x40 && buffer[0x38] == 0xbf && buffer[0x39] == 0x40 && buffer[0x40] == 0xbf && buffer[0x41] == 0x40 && buffer[0x48] == 0xb7 && buffer[0x49] == 0x40)
{
reset_file_recovery(file_recovery_new);
file_recovery_new->extension = file_hint_z2d.extension;
@ -61,6 +66,7 @@ static int header_check_z2d(const unsigned char *buffer, const unsigned int buff
static void register_header_check_z2d(file_stat_t *file_stat)
{
static const unsigned char z2d_header[2] = { 0xc3, 0x40 };
register_header_check(0x28, z2d_header, sizeof(z2d_header), &header_check_z2d, file_stat);
}
#endif