X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=src%2Fprotocol_auth.c;h=1f2e24a2ce8d9d6def723ee1a851ac4b5928ccef;hb=c31f626c3a252a0d6805a5f3ca9154d934ea41f5;hp=7bf121989b308558a0305d29cb0478a943818e07;hpb=7ce3c30b3e5aa9505a103291455827eb4cda65a7;p=meshlink

diff --git a/src/protocol_auth.c b/src/protocol_auth.c
index 7bf12198..1f2e24a2 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);
@@ -254,11 +267,6 @@ bool id_h(meshlink_handle_t *mesh, connection_t *c, const char *request) {
 		return false;
 	}
 
-	if(n->status.blacklisted) {
-		logger(mesh, MESHLINK_WARNING, "Peer %s is blacklisted", c->name);
-		return false;
-	}
-
 	if(!node_read_public_key(mesh, n)) {
 		logger(mesh, MESHLINK_ERROR, "No key known for peer %s", c->name);
 
@@ -296,6 +304,13 @@ bool id_h(meshlink_handle_t *mesh, connection_t *c, const char *request) {
 }
 
 bool send_ack(meshlink_handle_t *mesh, connection_t *c) {
+	node_t *n = lookup_node(mesh, c->name);
+
+	if(n && n->status.blacklisted) {
+		logger(mesh, MESHLINK_WARNING, "Peer %s is blacklisted", c->name);
+		return send_error(mesh, c, BLACKLISTED, "blacklisted");
+	}
+
 	c->last_ping_time = mesh->loop.now.tv_sec;
 	return send_request(mesh, c, NULL, "%d %s %d %x", ACK, mesh->myport, mesh->devclass, OPTION_PMTU_DISCOVERY | (PROT_MINOR << 24));
 }