mesh: Use node uuids as storage directory names

Instead of keeping track of unique 16bit node identifiers, reuse their
UUIDs to create both storage directories and dbus objects.

Because of that:
 - UUID is no longer stored in the JSON file, it's inferred from the
   directory name instead
 - Join(), CreateNetwork() and ImportLocalNode() APIs return an error if
   given UUID already registered within the daemon

1 files changed, 7 insertions, 0 deletions

diff --git a/mesh/mesh.c b/mesh/mesh.c
index a084f9200..4d65f266a 100644
--- a/mesh/mesh.c
+++ b/mesh/mesh.c
@@ -577,6 +577,13 @@ static struct l_dbus_message *join_network_call(struct l_dbus *dbus,
 							"Bad device UUID");
 	}
 
+	if (node_find_by_uuid(join_pending->uuid)) {
+		l_free(join_pending);
+		join_pending = NULL;
+		return dbus_error(msg, MESH_ERROR_ALREADY_EXISTS,
+							"Node already exists");
+	}
+
 	sender = l_dbus_message_get_sender(msg);
 
 	join_pending->sender = l_strdup(sender);