--- /dev/null
+++ Libc/Libc-320/gen/authentication.c
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * 
+ * 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@
+ */
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <err.h>
+#include <errno.h>
+#include <grp.h>
+#include <paths.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <unistd.h>
+
+#include "authentication.h"
+
+int isAuthenticatedAsAdministrator(void)
+{
+    if (isAuthenticatedAsRoot()) {
+        return 1;
+    }
+    // otherwise ...
+    return isAuthenticatedAsAdministratorForTask(0);
+}
+
+int isAuthenticatedAsAdministratorForTask(int taskNum)
+{
+    int admin = 0;
+    uid_t ruid;
+
+    if (isAuthenticatedAsRoot()) {
+        return 1;
+    }
+
+    ruid = getuid();
+
+    if (ruid) {
+            gid_t groups[NGROUPS_MAX];
+            int   numgroups;
+
+            /*
+             * Only allow those in group taskNum group (By default admin) to authenticate.
+             */
+            if ((numgroups = getgroups(NGROUPS_MAX, groups)) > 0) {
+                    int i;
+                    gid_t admingid = 0;
+                    struct group *admingroup;
+
+                    if ((admingroup = getgrnam(groupNameForTask(taskNum))) != NULL) {
+                            admingid = admingroup->gr_gid;
+
+                            for (i = 0; i < numgroups; i++) {
+                                    if (groups[i] == admingid) {
+                                            admin = 1;
+                                            break;
+                                    }
+                            }
+                    }
+
+            }
+    }
+    // otherwise
+    return admin;
+}
+
+int isAuthenticatedAsRoot(void)
+{
+    if (getuid() == 0) {
+        return 1;
+    }
+    return 0;
+}
+
+char *groupNameForTask(int taskNum)
+{
+    if (taskNum == 0)
+        return "admin";
+
+    return "admin";
+}
+