From 8e5d3cbc4a04744f57a6e32374e685b816a65700 Mon Sep 17 00:00:00 2001 From: Christophe Grenier Date: Sat, 27 Feb 2021 10:24:30 +0100 Subject: [PATCH] src/file_pcap.c: add frama-c annotations --- src/file_pcap.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/src/file_pcap.c b/src/file_pcap.c index 174d5715..b14917df 100644 --- a/src/file_pcap.c +++ b/src/file_pcap.c @@ -31,6 +31,7 @@ #include "types.h" #include "filegen.h" +/*@ requires \valid(file_stat); */ static void register_header_check_pcap(file_stat_t *file_stat); const file_hint_t file_hint_pcap= { @@ -42,6 +43,17 @@ const file_hint_t file_hint_pcap= { .register_header_check=®ister_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) { 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_header2[6] = {0xd4, 0xc3, 0xb2, 0xa1, 0x02, 0x00}; 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); +#endif } #endif