service: allow get_data of specifc instance.

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

diff --git a/service/service.c b/service/service.c
index c2a242b..2702dc3 100644 (file)
--- a/service/service.c
+++ b/service/service.c
@@ -213,8 +213,17 @@ static const struct blobmsg_policy validate_policy[__VALIDATE_MAX] = {
        [VALIDATE_SERVICE] = { .name = "service", .type = BLOBMSG_TYPE_STRING },
 };
 
+enum {
+       DATA_NAME,
+       DATA_INSTANCE,
+       DATA_TYPE,
+       __DATA_MAX
+};
+
 static const struct blobmsg_policy get_data_policy[] = {
-       { "type", BLOBMSG_TYPE_STRING }
+       [DATA_NAME] = { "name", BLOBMSG_TYPE_STRING },
+       [DATA_INSTANCE] = { "instance", BLOBMSG_TYPE_STRING },
+       [DATA_TYPE] = { "type", BLOBMSG_TYPE_STRING },
 };
 
 static int
@@ -424,24 +433,36 @@ service_get_data(struct ubus_context *ctx, struct ubus_object *obj,
 {
        struct service_instance *in;
        struct service *s;
-       struct blob_attr *tb;
+       struct blob_attr *tb[__DATA_MAX];
+       const char *name = NULL;
+       const char *instance = NULL;
        const char *type = NULL;
 
-       blobmsg_parse(get_data_policy, 1, &tb, blob_data(msg), blob_len(msg));
-       if (tb)
-               type = blobmsg_data(tb);
+       blobmsg_parse(get_data_policy, __DATA_MAX, tb, blob_data(msg), blob_len(msg));
+       if (tb[DATA_NAME])
+               name = blobmsg_data(tb[DATA_NAME]);
+       if (tb[DATA_INSTANCE])
+               instance = blobmsg_data(tb[DATA_INSTANCE]);
+       if (tb[DATA_TYPE])
+               type = blobmsg_data(tb[DATA_TYPE]);
 
        blob_buf_init(&b, 0);
        avl_for_each_element(&services, s, avl) {
                void *cs = NULL;
 
+               if (name && strcmp(name, s->name))
+                       continue;
+
                vlist_for_each_element(&s->instances, in, node) {
                        struct blobmsg_list_node *var;
                        void *ci = NULL;
 
+                       if (instance && strcmp(instance, in->name))
+                               continue;
+
                        blobmsg_list_for_each(&in->data, var) {
                                if (type &&
-                                   strcmp(blobmsg_name(var->data), type) != 0)
+                                   strcmp(blobmsg_name(var->data), type))
                                        continue;
 
                                if (!cs)