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src/fidentify.c: make file_identify() more frama-c friendly

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This commit is contained in:
Christophe Grenier 2020-06-18 18:59:02 +02:00
parent 04374e9c52
commit fa497bec61
1 changed files with 13 additions and 5 deletions
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18
src/fidentify.c
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@ -92,9 +92,12 @@ static int file_identify(const char *filename, const unsigned int options)
}
if(fread(buffer, 1, READ_SIZE, file) >0)
{
struct td_list_head *tmpl;
const struct td_list_head *tmpl;
file_recovery_t file_recovery_new;
file_recovery_t file_recovery;
#if defined(__FRAMAC__)
Frama_C_make_unknown((char *)buffer, READ_SIZE);
#endif
reset_file_recovery(&file_recovery);
reset_file_recovery(&file_recovery_new);
file_recovery.blocksize=blocksize;
@ -102,13 +105,18 @@ static int file_identify(const char *filename, const unsigned int options)
/*@ assert file_recovery_new.file_stat==NULL; */
td_list_for_each(tmpl, &file_check_list.list)
{
struct td_list_head *tmp;
const struct td_list_head *tmp;
const file_check_list_t *pos=td_list_entry_const(tmpl, const file_check_list_t, list);
td_list_for_each(tmp, &pos->file_checks[buffer[pos->offset]].list)
const struct td_list_head *tmp_list=&pos->file_checks[buffer[pos->offset]].list;
td_list_for_each(tmp, tmp_list)
{
/*TODO assert tmp!=tmp_list; */
const file_check_t *file_check=td_list_entry_const(tmp, const file_check_t, list);
/*@ assert &file_check->header_check != \null; */
if((file_check->length==0 || memcmp(buffer + file_check->offset, file_check->value, file_check->length)==0) &&
if(
#ifdef __FRAMAC__
file_check->header_check!=NULL &&
#endif
(file_check->length==0 || memcmp(buffer + file_check->offset, file_check->value, file_check->length)==0) &&
file_check->header_check(buffer, blocksize, 0, &file_recovery, &file_recovery_new)!=0)
{
file_recovery_new.file_stat=file_check->file_stat;