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AFL_FORK_SERVER_KILL_SIGNAL backwards compatiblity

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If `AFL_KILL_SIGNAL` is set, `AFL_FORK_SERVER_KILL_SIGNAL` is set
to the same value.
This commit is contained in:
Nils Bars
2022-10-24 17:52:04 +02:00
parent 7512316b46
commit 102b749c07
7 changed files with 40 additions and 16 deletions
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23
src/afl-common.c
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@ -25,6 +25,7 @@
#include <stdlib.h>
#include <stdio.h>
#include "forkserver.h"
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
@ -47,6 +48,7 @@
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>
u8 be_quiet = 0;
u8 *doc_path = "";
@ -476,6 +478,27 @@ int parse_afl_kill_signal(u8 *numeric_signal_as_str, int default_signal) {
return default_signal;
}
void configure_afl_kill_signals(afl_forkserver_t *fsrv, char* afl_kill_signal_env, char* afl_fsrv_kill_signal_env) {
afl_kill_signal_env = afl_kill_signal_env ?
afl_kill_signal_env : getenv("AFL_KILL_SIGNAL");
afl_fsrv_kill_signal_env = afl_fsrv_kill_signal_env ?
afl_fsrv_kill_signal_env : getenv("AFL_FORK_SERVER_KILL_SIGNAL");
fsrv->child_kill_signal =
parse_afl_kill_signal(afl_kill_signal_env, SIGKILL);
if (afl_kill_signal_env && !afl_fsrv_kill_signal_env) {
/*
Set AFL_FORK_SERVER_KILL_SIGNAL to the value of AFL_KILL_SIGNAL for backwards
compatibility. However, if AFL_FORK_SERVER_KILL_SIGNAL is set, is takes precedence.
*/
afl_fsrv_kill_signal_env = afl_kill_signal_env;
}
fsrv->fsrv_kill_signal =
parse_afl_kill_signal(afl_fsrv_kill_signal_env, SIGTERM);
}
static inline unsigned int helper_min3(unsigned int a, unsigned int b,
unsigned int c) {