mqtt plugin: Fix invalid symbols in topic name.

diff --git a/src/mqtt.c b/src/mqtt.c
index 6b76af9..8a24cca 100644 (file)
--- a/src/mqtt.c
+++ b/src/mqtt.c
@@ -462,6 +462,7 @@ static int format_topic(char *buf, size_t buf_len, data_set_t const *ds,
                         value_list_t const *vl, mqtt_client_conf_t *conf) {
   char name[MQTT_MAX_TOPIC_SIZE];
   int status;
+  char *c;
 
   if ((conf->topic_prefix == NULL) || (conf->topic_prefix[0] == 0))
     return (FORMAT_VL(buf, buf_len, vl));
@@ -474,6 +475,10 @@ static int format_topic(char *buf, size_t buf_len, data_set_t const *ds,
   if ((status < 0) || (((size_t)status) >= buf_len))
     return (ENOMEM);
 
+  while((c = strchr(buf, '#')) || (c = strchr(buf, '+'))) {
+       *c = '_';
+  }
+
   return (0);
 } /* int format_topic */