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Make sure natengine is not NULL before freeing

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Soner Tari 2022-04-19 16:27:14 +03:00
parent 674893cc79
commit c3feea53f9
1 changed files with 10 additions and 6 deletions
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16
src/opts.c
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@ -817,8 +817,10 @@ proxyspec_set_target_addr(proxyspec_t *spec, char *addr, char *port, int af)
return -1;
}
/* explicit target address */
free(spec->natengine);
spec->natengine = NULL;
if (spec->natengine) {
free(spec->natengine);
spec->natengine = NULL;
}
#ifdef DEBUG_OPTS
log_dbg_printf("TargetAddr: [%s]:%s\n", addr, port);
#endif /* DEBUG_OPTS */
@ -843,8 +845,10 @@ proxyspec_set_sni_port(proxyspec_t *spec, char *port)
return -1;
}
spec->dns = 1;
free(spec->natengine);
spec->natengine = NULL;
if (spec->natengine) {
free(spec->natengine);
spec->natengine = NULL;
}
#ifdef DEBUG_OPTS
log_dbg_printf("SNIPort: %u\n", spec->sni_port);
#endif /* DEBUG_OPTS */
@ -856,8 +860,8 @@ proxyspec_set_natengine(proxyspec_t *spec, const char *natengine)
{
// Double checks if called by proxyspec_parse()
if (nat_exist(natengine)) {
/* natengine */
free(spec->natengine);
if (spec->natengine)
free(spec->natengine);
spec->natengine = strdup(natengine);
if (!spec->natengine) {
fprintf(stderr, "Out of memory\n");