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Add AFL_NYX_LOG to redirect NYX hprintf messages to a file.

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This commit is contained in:
Jesse Schwartzentruber
2023-08-04 15:29:10 -04:00
parent 738a6c0731
commit 247d8539fe
4 changed files with 22 additions and 0 deletions
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19
src/afl-forkserver.c
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@ -164,6 +164,8 @@ void afl_nyx_runner_kill(afl_forkserver_t *fsrv) {
}
if (fsrv->nyx_log_fd >= 0) { close(fsrv->nyx_log_fd); }
}
}
@ -218,6 +220,7 @@ void afl_fsrv_init(afl_forkserver_t *fsrv) {
fsrv->nyx_bind_cpu_id = 0xFFFFFFFF;
fsrv->nyx_use_tmp_workdir = false;
fsrv->nyx_tmp_workdir_path = NULL;
fsrv->nyx_log_fd = -1;
#endif
// this structure needs default so we initialize it if this was not done
@ -575,6 +578,22 @@ void afl_fsrv_start(afl_forkserver_t *fsrv, char **argv,
fsrv->nyx_handlers->nyx_config_set_input_buffer_write_protection(nyx_config,
true);
char *nyx_log_path = getenv("AFL_NYX_LOG");
if (nyx_log_path) {
fsrv->nyx_log_fd =
open(nyx_log_path, O_CREAT | O_TRUNC | O_WRONLY, DEFAULT_PERMISSION);
if (fsrv->nyx_log_fd < 0) {
NYX_PRE_FATAL(fsrv, "AFL_NYX_LOG path could not be written");
}
fsrv->nyx_handlers->nyx_config_set_hprintf_fd(nyx_config,
fsrv->nyx_log_fd);
}
if (fsrv->nyx_standalone) {
fsrv->nyx_handlers->nyx_config_set_process_role(nyx_config, StandAlone);