Libc-262.tar.gz

[apple/libc.git] / gen / authentication.c

diff --git a/gen/authentication.c b/gen/authentication.c
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+++ b/gen/authentication.c
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+/*
+ * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License").  You may not use this file except in compliance with the
+ * License.  Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
+ * 
+ * This 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 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";
+}
+