1 files changed, 138 insertions, 0 deletions
diff --git a/bin/named/listenlist.c b/bin/named/listenlist.c
new file mode 100644
index 0000000..513fe9c
--- /dev/null
+++ b/bin/named/listenlist.c
@@ -0,0 +1,138 @@
+/*
+ * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: listenlist.c,v 1.14 2007/06/19 23:46:59 tbox Exp $ */
+
+/*! \file */
+
+#include <config.h>
+
+#include <isc/mem.h>
+#include <isc/util.h>
+
+#include <dns/acl.h>
+
+#include <named/listenlist.h>
+
+static void
+destroy(ns_listenlist_t *list);
+
+isc_result_t
+ns_listenelt_create(isc_mem_t *mctx, in_port_t port,
+		    dns_acl_t *acl, ns_listenelt_t **target)
+{
+	ns_listenelt_t *elt = NULL;
+	REQUIRE(target != NULL && *target == NULL);
+	elt = isc_mem_get(mctx, sizeof(*elt));
+	if (elt == NULL)
+		return (ISC_R_NOMEMORY);
+	elt->mctx = mctx;
+	ISC_LINK_INIT(elt, link);
+	elt->port = port;
+	elt->acl = acl;
+	*target = elt;
+	return (ISC_R_SUCCESS);
+}
+
+void
+ns_listenelt_destroy(ns_listenelt_t *elt) {
+	if (elt->acl != NULL)
+		dns_acl_detach(&elt->acl);
+	isc_mem_put(elt->mctx, elt, sizeof(*elt));
+}
+
+isc_result_t
+ns_listenlist_create(isc_mem_t *mctx, ns_listenlist_t **target) {
+	ns_listenlist_t *list = NULL;
+	REQUIRE(target != NULL && *target == NULL);
+	list = isc_mem_get(mctx, sizeof(*list));
+	if (list == NULL)
+		return (ISC_R_NOMEMORY);
+	list->mctx = mctx;
+	list->refcount = 1;
+	ISC_LIST_INIT(list->elts);
+	*target = list;
+	return (ISC_R_SUCCESS);
+}
+
+static void
+destroy(ns_listenlist_t *list) {
+	ns_listenelt_t *elt, *next;
+	for (elt = ISC_LIST_HEAD(list->elts);
+	     elt != NULL;
+	     elt = next)
+	{
+		next = ISC_LIST_NEXT(elt, link);
+		ns_listenelt_destroy(elt);
+	}
+	isc_mem_put(list->mctx, list, sizeof(*list));
+}
+
+void
+ns_listenlist_attach(ns_listenlist_t *source, ns_listenlist_t **target) {
+	INSIST(source->refcount > 0);
+	source->refcount++;
+	*target = source;
+}
+
+void
+ns_listenlist_detach(ns_listenlist_t **listp) {
+	ns_listenlist_t *list = *listp;
+	INSIST(list->refcount > 0);
+	list->refcount--;
+	if (list->refcount == 0)
+		destroy(list);
+	*listp = NULL;
+}
+
+isc_result_t
+ns_listenlist_default(isc_mem_t *mctx, in_port_t port,
+		      isc_boolean_t enabled, ns_listenlist_t **target)
+{
+	isc_result_t result;
+	dns_acl_t *acl = NULL;
+	ns_listenelt_t *elt = NULL;
+	ns_listenlist_t *list = NULL;
+
+	REQUIRE(target != NULL && *target == NULL);
+	if (enabled)
+		result = dns_acl_any(mctx, &acl);
+	else
+		result = dns_acl_none(mctx, &acl);
+	if (result != ISC_R_SUCCESS)
+		goto cleanup;
+
+	result = ns_listenelt_create(mctx, port, acl, &elt);
+	if (result != ISC_R_SUCCESS)
+		goto cleanup_acl;
+
+	result = ns_listenlist_create(mctx, &list);
+	if (result != ISC_R_SUCCESS)
+		goto cleanup_listenelt;
+
+	ISC_LIST_APPEND(list->elts, elt, link);
+
+	*target = list;
+	return (ISC_R_SUCCESS);
+
+ cleanup_listenelt:
+	ns_listenelt_destroy(elt);
+ cleanup_acl:
+	dns_acl_detach(&acl);
+ cleanup:
+	return (result);
+}