ubus: add config support

issue notifications for config changes

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

diff --git a/ubus.c b/ubus.c
index a58ccb33f9c995bc70709a481f687f3c4460af0e..ca82d0b53d7b7d2d5f3a33e2f78610b261248720 100644 (file)
--- a/ubus.c
+++ b/ubus.c
@@ -5,6 +5,7 @@
 struct ubus_auto_conn conn;
 struct blob_buf b;
 static struct ubus_object udebug_object;
+static struct blob_attr *service_config;
 
 enum {
        LIST_ATTR_PROCNAME,
@@ -121,8 +122,56 @@ udebug_list(struct ubus_context *ctx, struct ubus_object *obj,
        return 0;
 }
 
+enum {
+       CFG_ATTR_SERVICE,
+       __CFG_ATTR_MAX
+};
+static const struct blobmsg_policy config_policy[__CFG_ATTR_MAX] = {
+       [CFG_ATTR_SERVICE] = { "service", BLOBMSG_TYPE_TABLE },
+};
+
+static struct blob_attr *
+udebug_fill_config(void)
+{
+       blob_buf_init(&b, 0);
+       if (service_config)
+               blobmsg_add_blob(&b, service_config);
+       else
+               blobmsg_close_table(&b, blobmsg_open_table(&b, "service"));
+
+       return b.head;
+}
+
+static int
+udebug_set_config(struct ubus_context *ctx, struct ubus_object *obj,
+                 struct ubus_request_data *req, const char *method,
+                 struct blob_attr *msg)
+{
+       struct blob_attr *tb[__CFG_ATTR_MAX], *cur;
+
+       blobmsg_parse_attr(config_policy, __CFG_ATTR_MAX, tb, msg);
+       if ((cur = tb[CFG_ATTR_SERVICE]) != NULL) {
+               free(service_config);
+               service_config = blob_memdup(cur);
+               ubus_notify(ctx, obj, "config", udebug_fill_config(), -1);
+       }
+
+       return 0;
+}
+
+static int
+udebug_get_config(struct ubus_context *ctx, struct ubus_object *obj,
+                 struct ubus_request_data *req, const char *method,
+                 struct blob_attr *msg)
+{
+       ubus_send_reply(ctx, req, udebug_fill_config());
+       return 0;
+}
+
 static const struct ubus_method udebug_methods[] = {
        UBUS_METHOD("list", udebug_list, list_policy),
+       UBUS_METHOD("set_config", udebug_set_config, config_policy),
+       UBUS_METHOD_NOARG("get_config", udebug_get_config),
 };
 
 static struct ubus_object_type udebug_object_type =