X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fubus.git;a=blobdiff_plain;f=libubus-sub.c;fp=libubus-sub.c;h=2bfb483cfd8019dd22b12fc3d9144914fd1dbea8;hp=0000000000000000000000000000000000000000;hb=d366a6de839087d8a17e5855c14ae55e95b13c65;hpb=43d6047c400041e4783a76017d21b763df988d92

diff --git a/libubus-sub.c b/libubus-sub.c
new file mode 100644
index 0000000..2bfb483
--- /dev/null
+++ b/libubus-sub.c
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2011-2012 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include "libubus.h"
+#include "libubus-internal.h"
+
+static int ubus_subscriber_cb(struct ubus_context *ctx, struct ubus_object *obj,
+			 struct ubus_request_data *req,
+			 const char *method, struct blob_attr *msg)
+{
+	struct ubus_subscriber *s;
+
+	s = container_of(obj, struct ubus_subscriber, obj);
+	s->cb(ctx, obj, req, method, msg);
+	return 0;
+}
+
+static const struct ubus_method watch_method = {
+	.name = NULL,
+	.handler = ubus_subscriber_cb,
+};
+
+int ubus_register_subscriber(struct ubus_context *ctx, struct ubus_subscriber *s)
+{
+	struct ubus_object *obj = &s->obj;
+
+	obj->methods = &watch_method;
+	obj->n_methods = 1;
+
+	return ubus_add_object(ctx, obj);
+}
+
+static int
+__ubus_subscribe_request(struct ubus_context *ctx, struct ubus_object *obj, uint32_t id, const char *method, int type)
+{
+	struct ubus_request req;
+
+	blob_buf_init(&b, 0);
+	blob_put_int32(&b, UBUS_ATTR_OBJID, obj->id);
+	blob_put_int32(&b, UBUS_ATTR_TARGET, id);
+	if (method)
+		blob_put_string(&b, UBUS_ATTR_METHOD, method);
+
+	if (ubus_start_request(ctx, &req, b.head, type, 0) < 0)
+		return UBUS_STATUS_INVALID_ARGUMENT;
+
+	return ubus_complete_request(ctx, &req, 0);
+
+}
+
+int ubus_subscribe(struct ubus_context *ctx, struct ubus_subscriber *obj, uint32_t id)
+{
+	return __ubus_subscribe_request(ctx, &obj->obj, id, "event", UBUS_MSG_SUBSCRIBE);
+}
+
+int ubus_unsubscribe(struct ubus_context *ctx, struct ubus_subscriber *obj, uint32_t id)
+{
+	return __ubus_subscribe_request(ctx, &obj->obj, id, NULL, UBUS_MSG_UNSUBSCRIBE);
+}
+
+void __hidden ubus_process_unsubscribe(struct ubus_context *ctx, struct ubus_msghdr *hdr)
+{
+	struct ubus_subscriber *s;
+	struct blob_attr **attrbuf;
+	struct ubus_object *obj;
+	uint32_t objid;
+
+	attrbuf = ubus_parse_msg(hdr->data);
+	if (!attrbuf[UBUS_ATTR_OBJID] || !attrbuf[UBUS_ATTR_TARGET])
+		return;
+
+	objid = blob_get_u32(attrbuf[UBUS_ATTR_OBJID]);
+	obj = avl_find_element(&ctx->objects, &objid, obj, avl);
+	if (!obj)
+		return;
+
+	if (obj->methods != &watch_method)
+		return;
+
+	s = container_of(obj, struct ubus_subscriber, obj);
+	s->remove_cb(ctx, s, blob_get_u32(attrbuf[UBUS_ATTR_TARGET]));
+}
+
+