ubus: add api for modifying node script data

This is replicated across nodes

Signed-off-by: Felix Fietkau <nbd@nbd.name>

local_node.c

@@ -62,6 +62,7 @@ usteer_free_node(struct ubus_context *ctx, struct usteer_local_node *ln)
 	uloop_timeout_cancel(&ln->update);
 	avl_delete(&local_nodes, &ln->node.avl);
 	ubus_unregister_subscriber(ctx, &ln->ev);
+	kvlist_free(&ln->script_data);
 	free(ln);
 }
 
@@ -374,6 +375,7 @@ usteer_get_node(struct ubus_context *ctx, const char *name)
 	ln->req_timer.cb = usteer_local_node_state_next;
 	ubus_register_subscriber(ctx, &ln->ev);
 	avl_insert(&local_nodes, &node->avl);
+	kvlist_init(&ln->script_data, kvlist_blob_len);
 	INIT_LIST_HEAD(&node->sta_info);
 
 	return ln;
@@ -504,6 +506,23 @@ node_list_cb(struct ubus_context *ctx, struct ubus_object_data *obj, void *priv)
 	usteer_register_node(ctx, obj->path, obj->id);
 }
 
+void usteer_local_node_update_script_data(struct usteer_local_node *ln)
+{
+	struct blob_attr *val;
+	const char *name;
+
+	blob_buf_init(&b, 0);
+	kvlist_for_each(&ln->script_data, name, val)
+		blobmsg_add_field(&b, blobmsg_type(val), name,
+				  blobmsg_data(val), blobmsg_len(val));
+
+	val = b.head;
+	if (!blobmsg_len(val))
+		val = NULL;
+
+	usteer_node_set_blob(&ln->node.script_data, val);
+}
+
 void config_set_node_up_script(struct blob_attr *data)
 {
 	const char *val;