service: implement get_data to dump the data fields for every instance

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

diff --git a/service/service.c b/service/service.c
index 74feded39ed292e651f33941cdc6f553cba79fd0..bde2165638791c8633c07e41b4fa0191e57f2b52 100644 (file)
--- a/service/service.c
+++ b/service/service.c
@@ -209,6 +209,10 @@ static const struct blobmsg_policy validate_policy[__VALIDATE_MAX] = {
        [VALIDATE_SERVICE] = { .name = "service", .type = BLOBMSG_TYPE_STRING },
 };
 
+static const struct blobmsg_policy get_data_policy[] = {
+       { "type", BLOBMSG_TYPE_STRING }
+};
+
 static int
 service_handle_set(struct ubus_context *ctx, struct ubus_object *obj,
                   struct ubus_request_data *req, const char *method,
@@ -402,6 +406,53 @@ service_handle_validate(struct ubus_context *ctx, struct ubus_object *obj,
        return 0;
 }
 
+static int
+service_get_data(struct ubus_context *ctx, struct ubus_object *obj,
+                struct ubus_request_data *req, const char *method,
+                struct blob_attr *msg)
+{
+       struct service_instance *in;
+       struct service *s;
+       struct blob_attr *tb;
+       const char *type = NULL;
+
+       blobmsg_parse(get_data_policy, 1, &tb, blob_data(msg), blob_len(msg));
+       if (tb)
+               type = blobmsg_data(tb);
+
+       blob_buf_init(&b, 0);
+       avl_for_each_element(&services, s, avl) {
+               void *cs = NULL;
+
+               vlist_for_each_element(&s->instances, in, node) {
+                       struct blobmsg_list_node *var;
+                       void *ci = NULL;
+
+                       blobmsg_list_for_each(&in->data, var) {
+                               if (type &&
+                                   strcmp(blobmsg_name(var->data), type) != 0)
+                                       continue;
+
+                               if (!cs)
+                                       cs = blobmsg_open_table(&b, s->name);
+                               if (!ci)
+                                       ci = blobmsg_open_table(&b, in->name);
+
+                               blobmsg_add_blob(&b, var->data);
+                       }
+
+                       if (ci)
+                               blobmsg_close_table(&b, ci);
+               }
+
+               if (cs)
+                       blobmsg_close_table(&b, cs);
+       }
+
+       ubus_send_reply(ctx, req, b.head);
+       return 0;
+}
+
 static struct ubus_method main_object_methods[] = {
        UBUS_METHOD("set", service_handle_set, service_set_attrs),
        UBUS_METHOD("add", service_handle_set, service_set_attrs),
@@ -411,6 +462,7 @@ static struct ubus_method main_object_methods[] = {
        UBUS_METHOD("update_complete", service_handle_update, service_attrs),
        UBUS_METHOD("event", service_handle_event, event_policy),
        UBUS_METHOD("validate", service_handle_validate, validate_policy),
+       UBUS_METHOD("get_data", service_get_data, get_data_policy),
 };
 
 static struct ubus_object_type main_object_type =