X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=src%2Fprotocol_auth.c;fp=src%2Fprotocol_auth.c;h=e1a9a31341f8b73846628e49509335b1f4c0e511;hb=1c838cf7d4b4a97fe1038bfacbcb4207ca3ce9ca;hp=7bf121989b308558a0305d29cb0478a943818e07;hpb=b511667bc50e324255eed9427c4588ffdf70be42;p=meshlink

diff --git a/src/protocol_auth.c b/src/protocol_auth.c
index 7bf12198..e1a9a313 100644
--- a/src/protocol_auth.c
+++ b/src/protocol_auth.c
@@ -48,8 +48,21 @@ bool send_id(meshlink_handle_t *mesh, connection_t *c) {
 }
 
 static bool commit_invitation(meshlink_handle_t *mesh, connection_t *c, const void *data) {
+	// 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;
+	}
+
 	// Create a new node
-	node_t *n = new_node();
+	n = new_node();
 	n->name = xstrdup(c->name);
 	n->devclass = DEV_CLASS_UNKNOWN;
 	n->ecdsa = ecdsa_set_public_key(data);