deny mqtttopic starting with '/' (fixes #960)

2023-08-06 08:26:25 +02:00
parent c5bf9754fe
commit 949b366fe6
1 changed files with 1 additions and 1 deletions
@@ -195,7 +195,7 @@ static error_t mqtt_parse_opt(int key, char *arg, struct argp_state *state) {

  case O_TOPI:  // --mqtttopic=ebusd
  {
-    if (arg == nullptr || arg[0] == 0 || strchr(arg, '+') || arg[strlen(arg)-1] == '/') {
+    if (arg == nullptr || arg[0] == 0 || arg[0] == '/' || strchr(arg, '+') || arg[strlen(arg)-1] == '/') {
      argp_error(state, "invalid mqtttopic");
      return EINVAL;
    }