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diff --git a/data/libresolv/dnsinfo_private.c b/data/libresolv/dnsinfo_private.c
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+/*
+ * Copyright (c) 2004, 2005 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+/*
+ * Modification History
+ *
+ * March 9, 2004 Allan Nathanson <ajn@apple.com>
+ * - initial revision
+ */
+
+#include <stdlib.h>
+#include <mach/mach.h>
+#include <mach/mach_error.h>
+#include <servers/bootstrap.h>
+
+#include "dnsinfo_private.h"
+#include "shared_dns_info_types.h"
+
+
+__private_extern__
+const char *
+_dns_configuration_notify_key()
+{
+ return "com.apple.system.SystemConfiguration.dns_configuration";
+}
+
+
+__private_extern__
+mach_port_t
+_dns_configuration_server_port()
+{
+ mach_port_t server = MACH_PORT_NULL;
+ char *server_name;
+ kern_return_t status;
+
+ server_name = getenv("DNS_SERVER");
+ if (!server_name) {
+ server_name = DNS_SERVER;
+ }
+
+ status = bootstrap_look_up(bootstrap_port, server_name, &server);
+ switch (status) {
+ case BOOTSTRAP_SUCCESS :
+ /* service currently registered, "a good thing" (tm) */
+ break;
+ case BOOTSTRAP_UNKNOWN_SERVICE :
+ /* service not currently registered, try again later */
+ return MACH_PORT_NULL;
+ default :
+ mach_error("could not lookup DNS configuration info service:", status);
+ return MACH_PORT_NULL;
+ }
+
+ return server;
+}
+