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src/file_pst.c: add Frama-C annotations

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Christophe Grenier 2021-02-28 15:01:39 +01:00
parent 3a509008c6
commit 3906830e4a
1 changed files with 35 additions and 0 deletions
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35
src/file_pst.c
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@ -32,6 +32,7 @@
#include "filegen.h"
/*@ requires \valid(file_stat); */
static void register_header_check_pst(file_stat_t *file_stat);
static int header_check_pst(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);
@ -49,6 +50,17 @@ const file_hint_t file_hint_pst= {
#define FILE_SIZE_POINTER_64 0xB8
#define DBX_SIZE_POINTER 0x7C
/*@
@ requires buffer_size >= DBX_SIZE_POINTER + 4;
@ 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_pst, buffer+(..), file_recovery, file_recovery_new);
@ ensures \result == 0 || \result == 1;
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@ assigns *file_recovery_new;
@*/
static int header_check_dbx(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 uint64_t size=(uint64_t)buffer[DBX_SIZE_POINTER] +
@ -90,6 +102,17 @@ static int header_check_dbx(const unsigned char *buffer, const unsigned int buff
http://www.five-ten-sg.com/libpst/
*/
/*@
@ requires buffer_size > 0;
@ 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_pst, buffer+(..), file_recovery, file_recovery_new);
@ ensures \result == 0 || \result == 1;
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@ assigns *file_recovery_new;
@*/
static int header_check_wab(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)
{
reset_file_recovery(file_recovery_new);
@ -97,6 +120,18 @@ static int header_check_wab(const unsigned char *buffer, const unsigned int buff
return 1;
}
/*@
@ requires buffer_size >= FILE_SIZE_POINTER + 4;
@ requires buffer_size >= FILE_SIZE_POINTER_64 + 8;
@ 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_pst, buffer+(..), file_recovery, file_recovery_new);
@ ensures \result == 0 || \result == 1;
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@ assigns *file_recovery_new;
@*/
static int header_check_pst(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[INDEX_TYPE_OFFSET]==0x0e ||