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src/file_asm.c: add frama-c annotations

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This commit is contained in:
Christophe Grenier 2021-02-13 16:58:55 +01:00
parent edca0a7b45
commit ecec41894d
1 changed files with 24 additions and 4 deletions
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28
src/file_asm.c
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@ -32,6 +32,7 @@
#include "types.h"
#include "filegen.h"
/*@ requires \valid(file_stat); */
static void register_header_check_asm(file_stat_t *file_stat);
const file_hint_t file_hint_asm= {
@ -43,10 +44,16 @@ const file_hint_t file_hint_asm= {
.register_header_check=&register_header_check_asm
};
static const unsigned char asm_header[16]= {
'#', 'U', 'G', 'C', ':', '2', ' ', 'A',
'S', 'S', 'E', 'M', 'B', 'L', 'Y', ' '};
/*@
@ 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_asm;
@ assigns *file_recovery->handle, errno, file_recovery->file_size;
@ assigns Frama_C_entropy_source;
@
@ ensures \valid(file_recovery->handle);
@*/
static void file_check_asm(file_recovery_t *file_recovery)
{
const unsigned char asm_footer[11]= {
@ -55,6 +62,16 @@ static void file_check_asm(file_recovery_t *file_recovery)
file_search_footer(file_recovery, asm_footer, sizeof(asm_footer), 1);
}
/*@
@ requires buffer_size > 20;
@ 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_asm, buffer+(..), file_recovery, file_recovery_new);
@ assigns *file_recovery_new;
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@*/
static int header_check_asm(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[16]) || !isprint(buffer[17]) || !isprint(buffer[18]) || !isprint(buffer[19]))
@ -67,6 +84,9 @@ static int header_check_asm(const unsigned char *buffer, const unsigned int buff
static void register_header_check_asm(file_stat_t *file_stat)
{
static const unsigned char asm_header[16]= {
'#', 'U', 'G', 'C', ':', '2', ' ', 'A',
'S', 'S', 'E', 'M', 'B', 'L', 'Y', ' '};
register_header_check(0, asm_header,sizeof(asm_header), &header_check_asm, file_stat);
}
#endif