+static void
+ubusd_forward_invoke(struct ubus_client *cl, struct ubus_object *obj,
+ const char *method, struct ubus_msg_buf *ub,
+ struct blob_attr *data)
+{
+ blob_put_int32(&b, UBUS_ATTR_OBJID, obj->id.id);
+ blob_put_string(&b, UBUS_ATTR_METHOD, method);
+ if (cl->user)
+ blob_put_string(&b, UBUS_ATTR_USER, cl->user);
+ if (cl->group)
+ blob_put_string(&b, UBUS_ATTR_GROUP, cl->group);
+ if (data)
+ blob_put(&b, UBUS_ATTR_DATA, blob_data(data), blob_len(data));
+
+ ubus_proto_send_msg_from_blob(obj->client, ub, UBUS_MSG_INVOKE);
+}
+
+static int ubusd_handle_invoke(struct ubus_client *cl, struct ubus_msg_buf *ub, struct blob_attr **attr)
+{
+ struct ubus_object *obj = NULL;
+ struct ubus_id *id;
+ const char *method;
+
+ if (!attr[UBUS_ATTR_METHOD] || !attr[UBUS_ATTR_OBJID])
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ id = ubus_find_id(&objects, blob_get_u32(attr[UBUS_ATTR_OBJID]));
+ if (!id)
+ return UBUS_STATUS_NOT_FOUND;
+
+ obj = container_of(id, struct ubus_object, id);
+
+ method = blob_data(attr[UBUS_ATTR_METHOD]);
+
+ if (ubusd_acl_check(cl, obj->path.key, method, UBUS_ACL_ACCESS))
+ return UBUS_STATUS_PERMISSION_DENIED;
+
+ if (!obj->client)
+ return obj->recv_msg(cl, ub, method, attr[UBUS_ATTR_DATA]);
+
+ ub->hdr.peer = cl->id.id;
+ blob_buf_init(&b, 0);
+
+ ubusd_forward_invoke(cl, obj, method, ub, attr[UBUS_ATTR_DATA]);
+ ubus_msg_free(ub);
+
+ return -1;
+}
+
+static int ubusd_handle_notify(struct ubus_client *cl, struct ubus_msg_buf *ub, struct blob_attr **attr)
+{
+ struct ubus_object *obj = NULL;
+ struct ubus_subscription *s;
+ struct ubus_id *id;
+ const char *method;
+ bool no_reply = false;
+ void *c;
+
+ if (!attr[UBUS_ATTR_METHOD] || !attr[UBUS_ATTR_OBJID])
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ if (attr[UBUS_ATTR_NO_REPLY])
+ no_reply = blob_get_int8(attr[UBUS_ATTR_NO_REPLY]);
+
+ id = ubus_find_id(&objects, blob_get_u32(attr[UBUS_ATTR_OBJID]));
+ if (!id)
+ return UBUS_STATUS_NOT_FOUND;
+
+ obj = container_of(id, struct ubus_object, id);
+ if (obj->client != cl)
+ return UBUS_STATUS_PERMISSION_DENIED;
+
+ if (!no_reply) {
+ blob_buf_init(&b, 0);
+ blob_put_int32(&b, UBUS_ATTR_OBJID, id->id);
+ c = blob_nest_start(&b, UBUS_ATTR_SUBSCRIBERS);
+ list_for_each_entry(s, &obj->subscribers, list) {
+ blob_put_int32(&b, 0, s->subscriber->id.id);
+ }
+ blob_nest_end(&b, c);
+ blob_put_int32(&b, UBUS_ATTR_STATUS, 0);
+ ubus_proto_send_msg_from_blob(cl, ub, UBUS_MSG_STATUS);
+ }
+
+ ub->hdr.peer = cl->id.id;
+ method = blob_data(attr[UBUS_ATTR_METHOD]);
+ list_for_each_entry(s, &obj->subscribers, list) {
+ blob_buf_init(&b, 0);
+ if (no_reply)
+ blob_put_int8(&b, UBUS_ATTR_NO_REPLY, 1);
+ ubusd_forward_invoke(cl, s->subscriber, method, ub, attr[UBUS_ATTR_DATA]);
+ }
+ ubus_msg_free(ub);
+
+ return -1;
+}
+
+static struct ubus_client *ubusd_get_client_by_id(uint32_t id)
+{
+ struct ubus_id *clid;
+
+ clid = ubus_find_id(&clients, id);
+ if (!clid)
+ return NULL;
+
+ return container_of(clid, struct ubus_client, id);
+}
+
+static int ubusd_handle_response(struct ubus_client *cl, struct ubus_msg_buf *ub, struct blob_attr **attr)
+{
+ struct ubus_object *obj;
+
+ if (!attr[UBUS_ATTR_OBJID] ||
+ (ub->hdr.type == UBUS_MSG_STATUS && !attr[UBUS_ATTR_STATUS]) ||
+ (ub->hdr.type == UBUS_MSG_DATA && !attr[UBUS_ATTR_DATA]))
+ goto error;
+
+ obj = ubusd_find_object(blob_get_u32(attr[UBUS_ATTR_OBJID]));
+ if (!obj)
+ goto error;
+
+ if (cl != obj->client)
+ goto error;
+
+ cl = ubusd_get_client_by_id(ub->hdr.peer);
+ if (!cl)
+ goto error;
+
+ ub->hdr.peer = blob_get_u32(attr[UBUS_ATTR_OBJID]);
+ ubus_msg_send(cl, ub, true);
+ return -1;
+
+error:
+ ubus_msg_free(ub);
+ return -1;
+}
+
+static int ubusd_handle_add_watch(struct ubus_client *cl, struct ubus_msg_buf *ub, struct blob_attr **attr)
+{
+ struct ubus_object *obj, *target;
+
+ if (!attr[UBUS_ATTR_OBJID] || !attr[UBUS_ATTR_TARGET])
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ obj = ubusd_find_object(blob_get_u32(attr[UBUS_ATTR_OBJID]));
+ if (!obj)
+ return UBUS_STATUS_NOT_FOUND;
+
+ if (cl != obj->client)
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ target = ubusd_find_object(blob_get_u32(attr[UBUS_ATTR_TARGET]));
+ if (!target)
+ return UBUS_STATUS_NOT_FOUND;
+
+ if (cl == target->client)
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ if (!target->path.key) {
+ if (strcmp(target->client->user, cl->user) && strcmp(target->client->group, cl->group))
+ return UBUS_STATUS_NOT_FOUND;
+ } else if (ubusd_acl_check(cl, target->path.key, NULL, UBUS_ACL_SUBSCRIBE)) {
+ return UBUS_STATUS_NOT_FOUND;
+ }
+
+ ubus_subscribe(obj, target);
+ return 0;
+}
+
+static int ubusd_handle_remove_watch(struct ubus_client *cl, struct ubus_msg_buf *ub, struct blob_attr **attr)
+{
+ struct ubus_object *obj;
+ struct ubus_subscription *s;
+ uint32_t id;
+
+ if (!attr[UBUS_ATTR_OBJID] || !attr[UBUS_ATTR_TARGET])
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ obj = ubusd_find_object(blob_get_u32(attr[UBUS_ATTR_OBJID]));
+ if (!obj)
+ return UBUS_STATUS_NOT_FOUND;
+
+ if (cl != obj->client)
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ id = blob_get_u32(attr[UBUS_ATTR_TARGET]);
+ list_for_each_entry(s, &obj->target_list, target_list) {
+ if (s->target->id.id != id)
+ continue;
+
+ ubus_unsubscribe(s);
+ return 0;
+ }
+
+ return UBUS_STATUS_NOT_FOUND;
+}
+