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/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/*
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* (C) Copyright IBM Corp. 1999 All Rights Reserved.
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* Copyright 1997 The Open Group Research Institute. All rights reserved.
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*/
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package sun.security.krb5.internal.tools;
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import sun.security.krb5.*;
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import sun.security.krb5.internal.*;
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import sun.security.krb5.internal.ccache.*;
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import sun.security.krb5.internal.ktab.*;
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import sun.security.krb5.internal.crypto.EType;
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import sun.security.krb5.KrbCryptoException;
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import java.lang.RuntimeException;
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import java.io.IOException;
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import java.io.BufferedReader;
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import java.io.InputStreamReader;
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import java.io.File;
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/**
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* This class can execute as a command-line tool to list entries in
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* credential cache and key tab.
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*
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* @author Yanni Zhang
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* @author Ram Marti
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*/
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public class Klist {
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Object target;
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// for credentials cache, options are 'f' and 'e';
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// for keytab, optionsare 't' and 'K' and 'e'
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char[] options = new char[3];
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String name; // the name of credentials cache and keytable.
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char action; // actions would be 'c' for credentials cache
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// and 'k' for keytable.
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private static boolean DEBUG = Krb5.DEBUG;
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/**
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* The main program that can be invoked at command line.
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* <br>Usage: klist
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* [[-c] [-f] [-e]] [-k [-t] [-K]] [name]
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* -c specifes that credential cache is to be listed
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* -k specifies that key tab is to be listed
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* name name of the credentials cache or keytab
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* <br>available options for credential caches:
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* <ul>
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* <li><b>-f</b> shows credentials flags
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* <li><b>-e</b> shows the encryption type
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* </ul>
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* available options for keytabs:
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* <li><b>-t</b> shows keytab entry timestamps
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* <li><b>-K</b> shows keytab entry DES keys
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*/
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public static void main(String[] args) {
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Klist klist = new Klist();
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if ((args == null) || (args.length == 0)) {
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klist.action = 'c'; // default will list default credentials cache.
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} else {
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klist.processArgs(args);
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}
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switch (klist.action) {
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case 'c':
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if (klist.name == null) {
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klist.target = CredentialsCache.getInstance();
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klist.name = CredentialsCache.cacheName();
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} else
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klist.target = CredentialsCache.getInstance(klist.name);
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if (klist.target != null) {
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klist.displayCache();
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} else {
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klist.displayMessage("Credentials cache");
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System.exit(-1);
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}
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break;
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case 'k':
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if (klist.name == null) {
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klist.target = KeyTab.getInstance();
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klist.name = KeyTab.tabName();
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} else klist.target = KeyTab.getInstance(klist.name);
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if (klist.target != null) {
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klist.displayTab();
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} else {
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klist.displayMessage("KeyTab");
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System.exit(-1);
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}
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break;
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default:
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if (klist.name != null) {
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klist.printHelp();
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System.exit(-1);
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} else {
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klist.target = CredentialsCache.getInstance();
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klist.name = CredentialsCache.cacheName();
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if (klist.target != null) {
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klist.displayCache();
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} else {
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klist.displayMessage("Credentials cache");
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System.exit(-1);
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}
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}
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}
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}
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/**
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* Parses the command line arguments.
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*/
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void processArgs(String[] args) {
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Character arg;
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for (int i = 0; i < args.length; i++) {
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if ((args[i].length() >= 2) && (args[i].startsWith("-"))) {
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arg = new Character(args[i].charAt(1));
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switch (arg.charValue()) {
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case 'c':
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action = 'c';
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break;
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case 'k':
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action = 'k';
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break;
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case 'f':
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options[1] = 'f';
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break;
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case 'e':
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options[0] = 'e';
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break;
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case 'K':
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options[1] = 'K';
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break;
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case 't':
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options[2] = 't';
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break;
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default:
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printHelp();
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System.exit(-1);
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}
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} else {
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if (!args[i].startsWith("-") && (i == args.length - 1)) {
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// the argument is the last one.
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name = args[i];
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arg = null;
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} else {
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printHelp(); // incorrect input format.
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System.exit(-1);
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}
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}
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}
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}
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void displayTab() {
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KeyTab table = (KeyTab)target;
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KeyTabEntry[] entries = table.getEntries();
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if (entries.length == 0) {
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System.out.println("\nKey tab: " + name +
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", " + " 0 entries found.\n");
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} else {
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if (entries.length == 1)
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System.out.println("\nKey tab: " + name +
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", " + entries.length + " entry found.\n");
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else
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System.out.println("\nKey tab: " + name + ", " +
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entries.length + " entries found.\n");
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for (int i = 0; i < entries.length; i++) {
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System.out.println("[" + (i + 1) + "] " +
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"Service principal: " +
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entries[i].getService().toString());
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System.out.println("\t KVNO: " +
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entries[i].getKey().getKeyVersionNumber());
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if (options[0] == 'e') {
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EncryptionKey key = entries[i].getKey();
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System.out.println("\t Key type: " +
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key.getEType());
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}
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if (options[1] == 'K') {
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EncryptionKey key = entries[i].getKey();
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System.out.println("\t Key: " +
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entries[i].getKeyString());
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}
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if (options[2] == 't') {
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System.out.println("\t Time stamp: " +
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reformat(entries[i].getTimeStamp().toDate().toString()));
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}
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}
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}
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}
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void displayCache() {
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CredentialsCache cache = (CredentialsCache)target;
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sun.security.krb5.internal.ccache.Credentials[] creds =
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cache.getCredsList();
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if (creds == null) {
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System.out.println ("No credentials available in the cache " +
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name);
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System.exit(-1);
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}
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System.out.println("\nCredentials cache: " + name);
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String defaultPrincipal = cache.getPrimaryPrincipal().toString();
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int num = creds.length;
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if (num == 1)
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System.out.println("\nDefault principal: " +
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defaultPrincipal + ", " +
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creds.length + " entry found.\n");
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else
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System.out.println("\nDefault principal: " +
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defaultPrincipal + ", " +
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creds.length + " entries found.\n");
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String starttime = null;
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String endtime = null;
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String servicePrincipal = null;
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String etype = null;
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if (creds != null) {
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for (int i = 0; i < creds.length; i++) {
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try {
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starttime =
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reformat(creds[i].getAuthTime().toDate().toString());
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endtime =
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reformat(creds[i].getEndTime().toDate().toString());
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servicePrincipal =
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creds[i].getServicePrincipal().toString();
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System.out.println("[" + (i + 1) + "] " +
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" Service Principal: " +
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servicePrincipal);
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System.out.println(" Valid starting: " + starttime);
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System.out.println(" Expires: " + endtime);
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if (options[0] == 'e') {
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etype = EType.toString(creds[i].getEType());
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System.out.println("\t Encryption type: " + etype);
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}
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if (options[1] == 'f') {
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System.out.println("\t Flags: " +
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creds[i].getTicketFlags().toString());
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}
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} catch (RealmException e) {
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System.out.println("Error reading principal from "+
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"the entry.");
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if (DEBUG) {
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e.printStackTrace();
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}
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System.exit(-1);
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}
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}
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} else {
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System.out.println("\nNo entries found.");
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}
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}
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void displayMessage(String target) {
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if (name == null) {
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name = "";
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}
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System.out.println(target + " " + name + " not found.");
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}
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/**
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* Reformats the date from the form -
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* dow mon dd hh:mm:ss zzz yyyy to mon/dd/yyyy hh:mm
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* where dow is the day of the week, mon is the month,
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* dd is the day of the month, hh is the hour of
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* the day, mm is the minute within the hour,
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* ss is the second within the minute, zzz is the time zone,
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* and yyyy is the year.
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* @param date the string form of Date object.
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*/
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String reformat(String date) {
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return (date.substring(4, 7) + " " + date.substring(8, 10) +
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", " + date.substring(24)
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+ " " + date.substring(11, 16));
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}
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/**
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* Printes out the help information.
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*/
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void printHelp() {
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System.out.println("\nUsage: klist " +
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"[[-c] [-f] [-e]] [-k [-t] [-K]] [name]");
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System.out.println(" name\t name of credentials cache or " +
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" keytab with the prefix. File-based cache or "
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+ "keytab's prefix is FILE:.");
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System.out.println(" -c specifes that credential cache is to be " +
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"listed");
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System.out.println(" -k specifies that key tab is to be listed");
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System.out.println(" options for credentials caches:");
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System.out.println("\t-f \t shows credentials flags");
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System.out.println("\t-e \t shows the encryption type");
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System.out.println(" options for keytabs:");
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System.out.println("\t-t \t shows keytab entry timestamps");
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System.out.println("\t-K \t shows keytab entry key value");
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System.out.println("\t-e \t shows keytab entry key type");
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System.out.println("\nUsage: java sun.security.krb5.tools.Klist " +
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"-help for help.");
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}
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}
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