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src/file_pcap.c: add frama-c annotations

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Christophe Grenier 2021-02-27 10:24:30 +01:00
parent 717ce7122f
commit 8e5d3cbc4a
1 changed files with 14 additions and 0 deletions
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14
src/file_pcap.c
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@ -31,6 +31,7 @@
#include "types.h" #include "types.h"
#include "filegen.h" #include "filegen.h"
/*@ requires \valid(file_stat); */
static void register_header_check_pcap(file_stat_t *file_stat); static void register_header_check_pcap(file_stat_t *file_stat);
const file_hint_t file_hint_pcap= { const file_hint_t file_hint_pcap= {
@ -42,6 +43,17 @@ const file_hint_t file_hint_pcap= {
.register_header_check=&register_header_check_pcap .register_header_check=&register_header_check_pcap
}; };
/*@
@ 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_pcap, 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_pcap(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) static int header_check_pcap(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); reset_file_recovery(file_recovery_new);
@ -58,6 +70,8 @@ static void register_header_check_pcap(file_stat_t *file_stat)
static const unsigned char pcap_le_header1[6] = {0xd4, 0xc3, 0xb2, 0xa1, 0x01, 0x00}; static const unsigned char pcap_le_header1[6] = {0xd4, 0xc3, 0xb2, 0xa1, 0x01, 0x00};
static const unsigned char pcap_le_header2[6] = {0xd4, 0xc3, 0xb2, 0xa1, 0x02, 0x00}; static const unsigned char pcap_le_header2[6] = {0xd4, 0xc3, 0xb2, 0xa1, 0x02, 0x00};
register_header_check(0, pcap_le_header1, sizeof(pcap_le_header1), &header_check_pcap, file_stat); register_header_check(0, pcap_le_header1, sizeof(pcap_le_header1), &header_check_pcap, file_stat);
#ifndef __FRAMAC__
register_header_check(0, pcap_le_header2, sizeof(pcap_le_header2), &header_check_pcap, file_stat); register_header_check(0, pcap_le_header2, sizeof(pcap_le_header2), &header_check_pcap, file_stat);
#endif
} }
#endif #endif