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cleaned up AFL_KILL_SIGNAL

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This commit is contained in:
Dominik Maier
2021-01-07 23:21:10 +01:00
parent 9cdf5c4150
commit a06b25538f
7 changed files with 104 additions and 44 deletions
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37
src/afl-showmap.c
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@ -693,12 +693,13 @@ static void usage(u8 *argv0) {
"AFL_CRASH_EXITCODE: optional child exit code to be interpreted as "
"crash\n"
"AFL_DEBUG: enable extra developer output\n"
"AFL_MAP_SIZE: the shared memory size for that target. must be >= the "
"size\n"
" the target was compiled for\n"
"AFL_PRELOAD: LD_PRELOAD / DYLD_INSERT_LIBRARIES settings for target\n"
"AFL_FORKSRV_INIT_TMOUT: time spent waiting for forkserver during "
"startup (in milliseconds)\n"
"AFL_KILL_SIGNAL: Signal ID delivered to child processes on timeout, "
"etc. (default: SIGKILL)\n"
"AFL_MAP_SIZE: the shared memory size for that target. must be >= the "
"size the target was compiled for\n"
"AFL_PRELOAD: LD_PRELOAD / DYLD_INSERT_LIBRARIES settings for target\n"
"AFL_QUIET: do not print extra informational output\n",
argv0, MEM_LIMIT, doc_path);
@ -1115,6 +1116,34 @@ int main(int argc, char **argv_orig, char **envp) {
}
fsrv->kill_signal = SIGKILL;
char *afl_kill_signal_env = getenv("AFL_KILL_SIGNAL");
if (afl_kill_signal_env && afl_kill_signal_env[0]) {
char *endptr;
u8 signal_code;
signal_code = (u8)strtoul(afl_kill_signal_env, &endptr, 10);
/* Did we manage to parse the full string? */
if (*endptr != '\0' || endptr == afl_kill_signal_env) {
FATAL("Invalid AFL_KILL_SIGNAL: %s (expected unsigned int)",
afl_kill_signal_env);
}
fsrv->kill_signal = signal_code;
} else {
char *sigstr = alloc_printf("%d", (int)SIGKILL);
if (!sigstr) { FATAL("Failed to alloc mem for signal buf"); }
/* Set the env for signal handler */
setenv("AFL_KILL_SIGNAL", sigstr, 1);
free(sigstr);
}
if (getenv("AFL_CRASH_EXITCODE")) {
long exitcode = strtol(getenv("AFL_CRASH_EXITCODE"), NULL, 10);