luisgulo/testdisk
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

src/file_drw.c: add frama-c annotations

Browse source
This commit is contained in:
Christophe Grenier 2021-02-14 21:53:14 +01:00
parent a9d7aacefa
commit 5acbbc4884
1 changed files with 22 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
src/file_drw.c
View file

@ -32,6 +32,7 @@
#include "types.h"
#include "filegen.h"
/*@ requires \valid(file_stat); */
static void register_header_check_drw(file_stat_t *file_stat);
const file_hint_t file_hint_drw= {
@ -43,6 +44,16 @@ const file_hint_t file_hint_drw= {
.register_header_check=&register_header_check_drw
};
/*@
@ requires valid_file_recovery(file_recovery);
@ requires \valid(file_recovery->handle);
@ requires \separated(file_recovery, file_recovery->handle, file_recovery->extension, &errno, &Frama_C_entropy_source);
@ requires file_recovery->file_check == &file_check_drw;
@ assigns *file_recovery->handle, errno, file_recovery->file_size;
@ assigns Frama_C_entropy_source;
@ ensures \valid(file_recovery->handle);
@ ensures valid_file_recovery(file_recovery);
@*/
static void file_check_drw(file_recovery_t *file_recovery)
{
const unsigned char drw_footer[11]= {
@ -51,6 +62,17 @@ static void file_check_drw(file_recovery_t *file_recovery)
file_search_footer(file_recovery, drw_footer, sizeof(drw_footer), 1);
}
/*@
@ requires buffer_size >= 18;
@ 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_drw, buffer+(..), file_recovery, file_recovery_new);
@ assigns *file_recovery_new;
@ ensures \result == 0 || \result == 1;
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@*/
static int header_check_drw(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(!isprint(buffer[14]) || !isprint(buffer[15]) || !isprint(buffer[16]) || !isprint(buffer[17]))