+ // Check if the node is known
+ node_t *n = lookup_node(mesh, c->name);
+
+ if(n) {
+ if(n->status.blacklisted) {
+ logger(mesh, MESHLINK_ERROR, "Invitee %s is blacklisted", c->name);
+ } else {
+ logger(mesh, MESHLINK_ERROR, "Invitee %s already known", c->name);
+ }
+
+ return false;
+ }
+