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src/file_wks.c: add Frama-C annotations

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Christophe Grenier 2021-03-14 11:49:34 +01:00
parent cef9304cf0
commit 74a9277425
1 changed files with 35 additions and 14 deletions
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49
src/file_wks.c
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@ -31,15 +31,16 @@
#include "types.h"
#include "filegen.h"
/*@ requires \valid(file_stat); */
static void register_header_check_wks(file_stat_t *file_stat);
const file_hint_t file_hint_wks= {
.extension="wks",
.description="Lotus 1-2-3",
.max_filesize=PHOTOREC_MAX_FILE_SIZE,
.recover=1,
.enable_by_default=1,
.register_header_check=&register_header_check_wks
const file_hint_t file_hint_wks = {
.extension = "wks",
.description = "Lotus 1-2-3",
.max_filesize = PHOTOREC_MAX_FILE_SIZE,
.recover = 1,
.enable_by_default = 1,
.register_header_check = &register_header_check_wks
};
/*
@ -53,26 +54,46 @@ const file_hint_t file_hint_wks= {
* http://www.schnarff.com/file-formats/lotus-1-2-3/WSFF1.TXT
* http://www.schnarff.com/file-formats/lotus-1-2-3/WSFF2.TXT
*/
/*@
@ 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_wks, buffer+(..), file_recovery, file_recovery_new);
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@ assigns *file_recovery_new;
@*/
static int header_check_wk4(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);
file_recovery_new->extension="wk4";
file_recovery_new->extension = "wk4";
return 1;
}
/*@
@ 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_wks, buffer+(..), file_recovery, file_recovery_new);
@ ensures \result!=0 ==> valid_file_recovery(file_recovery_new);
@ assigns *file_recovery_new;
@*/
static int header_check_wks(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);
file_recovery_new->extension=file_hint_wks.extension;
file_recovery_new->extension = file_hint_wks.extension;
return 1;
}
static void register_header_check_wks(file_stat_t *file_stat)
{
static const unsigned char wks_header[10] = { 0x00, 0x00, 0x02, 0x00, 0x04, 0x04,
0x06, 0x00, 0x08, 0x00};
static const unsigned char wk4_header[8] = { 0x00, 0x00, 0x1a, 0x00, 0x02, 0x10, 0x04, 0x00};
register_header_check(0, wks_header,sizeof(wks_header), &header_check_wks, file_stat);
register_header_check(0, wk4_header,sizeof(wk4_header), &header_check_wk4, file_stat);
static const unsigned char wks_header[10] = { 0x00, 0x00, 0x02, 0x00, 0x04, 0x04,
0x06, 0x00, 0x08, 0x00 };
static const unsigned char wk4_header[8] = { 0x00, 0x00, 0x1a, 0x00, 0x02, 0x10, 0x04, 0x00 };
register_header_check(0, wks_header, sizeof(wks_header), &header_check_wks, file_stat);
register_header_check(0, wk4_header, sizeof(wk4_header), &header_check_wk4, file_stat);
}
#endif