From 5acbbc488431a80474d86deba3d7256d9addc3e1 Mon Sep 17 00:00:00 2001 From: Christophe Grenier Date: Sun, 14 Feb 2021 21:53:14 +0100 Subject: [PATCH] src/file_drw.c: add frama-c annotations --- src/file_drw.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/src/file_drw.c b/src/file_drw.c index 2c7cb952..192e215e 100644 --- a/src/file_drw.c +++ b/src/file_drw.c @@ -32,6 +32,7 @@ #include "types.h" #include "filegen.h" +/*@ requires \valid(file_stat); */ static void register_header_check_drw(file_stat_t *file_stat); const file_hint_t file_hint_drw= { @@ -43,6 +44,16 @@ const file_hint_t file_hint_drw= { .register_header_check=®ister_header_check_drw }; +/*@ + @ 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_drw; + @ assigns *file_recovery->handle, errno, file_recovery->file_size; + @ assigns Frama_C_entropy_source; + @ ensures \valid(file_recovery->handle); + @ ensures valid_file_recovery(file_recovery); + @*/ static void file_check_drw(file_recovery_t *file_recovery) { const unsigned char drw_footer[11]= { @@ -51,6 +62,17 @@ static void file_check_drw(file_recovery_t *file_recovery) file_search_footer(file_recovery, drw_footer, sizeof(drw_footer), 1); } +/*@ + @ requires buffer_size >= 18; + @ 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_drw, 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_drw(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[14]) || !isprint(buffer[15]) || !isprint(buffer[16]) || !isprint(buffer[17]))