/*
* Portions Copyright 2003-2009 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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/*
* (C) Copyright IBM Corp. 1999 All Rights Reserved.
* Copyright 1997 The Open Group Research Institute. All rights reserved.
*/
package sun.security.krb5.internal.tools;
import sun.security.krb5.*;
import sun.security.krb5.internal.*;
import sun.security.krb5.internal.ccache.*;
import sun.security.krb5.internal.ktab.*;
import sun.security.krb5.internal.crypto.EType;
import sun.security.krb5.KrbCryptoException;
import java.lang.RuntimeException;
import java.io.IOException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.File;
This class can execute as a command-line tool to list entries in
credential cache and key tab.
Author: Yanni Zhang, Ram Marti
/**
* This class can execute as a command-line tool to list entries in
* credential cache and key tab.
*
* @author Yanni Zhang
* @author Ram Marti
*/
public class Klist {
Object target;
// for credentials cache, options are 'f' and 'e';
// for keytab, optionsare 't' and 'K' and 'e'
char[] options = new char[3];
String name; // the name of credentials cache and keytable.
char action; // actions would be 'c' for credentials cache
// and 'k' for keytable.
private static boolean DEBUG = Krb5.DEBUG;
The main program that can be invoked at command line.
Usage: klist
[[-c] [-f] [-e]] [-k [-t] [-K]] [name]
-c specifes that credential cache is to be listed
-k specifies that key tab is to be listed
name name of the credentials cache or keytab
available options for credential caches:
- -f shows credentials flags
- -e shows the encryption type
available options for keytabs:
-t shows keytab entry timestamps
-K shows keytab entry DES keys
/**
* The main program that can be invoked at command line.
* <br>Usage: klist
* [[-c] [-f] [-e]] [-k [-t] [-K]] [name]
* -c specifes that credential cache is to be listed
* -k specifies that key tab is to be listed
* name name of the credentials cache or keytab
* <br>available options for credential caches:
* <ul>
* <li><b>-f</b> shows credentials flags
* <li><b>-e</b> shows the encryption type
* </ul>
* available options for keytabs:
* <li><b>-t</b> shows keytab entry timestamps
* <li><b>-K</b> shows keytab entry DES keys
*/
public static void main(String[] args) {
Klist klist = new Klist();
if ((args == null) || (args.length == 0)) {
klist.action = 'c'; // default will list default credentials cache.
} else {
klist.processArgs(args);
}
switch (klist.action) {
case 'c':
if (klist.name == null) {
klist.target = CredentialsCache.getInstance();
klist.name = CredentialsCache.cacheName();
} else
klist.target = CredentialsCache.getInstance(klist.name);
if (klist.target != null) {
klist.displayCache();
} else {
klist.displayMessage("Credentials cache");
System.exit(-1);
}
break;
case 'k':
if (klist.name == null) {
klist.target = KeyTab.getInstance();
klist.name = KeyTab.tabName();
} else klist.target = KeyTab.getInstance(klist.name);
if (klist.target != null) {
klist.displayTab();
} else {
klist.displayMessage("KeyTab");
System.exit(-1);
}
break;
default:
if (klist.name != null) {
klist.printHelp();
System.exit(-1);
} else {
klist.target = CredentialsCache.getInstance();
klist.name = CredentialsCache.cacheName();
if (klist.target != null) {
klist.displayCache();
} else {
klist.displayMessage("Credentials cache");
System.exit(-1);
}
}
}
}
Parses the command line arguments.
/**
* Parses the command line arguments.
*/
void processArgs(String[] args) {
Character arg;
for (int i = 0; i < args.length; i++) {
if ((args[i].length() >= 2) && (args[i].startsWith("-"))) {
arg = new Character(args[i].charAt(1));
switch (arg.charValue()) {
case 'c':
action = 'c';
break;
case 'k':
action = 'k';
break;
case 'f':
options[1] = 'f';
break;
case 'e':
options[0] = 'e';
break;
case 'K':
options[1] = 'K';
break;
case 't':
options[2] = 't';
break;
default:
printHelp();
System.exit(-1);
}
} else {
if (!args[i].startsWith("-") && (i == args.length - 1)) {
// the argument is the last one.
name = args[i];
arg = null;
} else {
printHelp(); // incorrect input format.
System.exit(-1);
}
}
}
}
void displayTab() {
KeyTab table = (KeyTab)target;
KeyTabEntry[] entries = table.getEntries();
if (entries.length == 0) {
System.out.println("\nKey tab: " + name +
", " + " 0 entries found.\n");
} else {
if (entries.length == 1)
System.out.println("\nKey tab: " + name +
", " + entries.length + " entry found.\n");
else
System.out.println("\nKey tab: " + name + ", " +
entries.length + " entries found.\n");
for (int i = 0; i < entries.length; i++) {
System.out.println("[" + (i + 1) + "] " +
"Service principal: " +
entries[i].getService().toString());
System.out.println("\t KVNO: " +
entries[i].getKey().getKeyVersionNumber());
if (options[0] == 'e') {
EncryptionKey key = entries[i].getKey();
System.out.println("\t Key type: " +
key.getEType());
}
if (options[1] == 'K') {
EncryptionKey key = entries[i].getKey();
System.out.println("\t Key: " +
entries[i].getKeyString());
}
if (options[2] == 't') {
System.out.println("\t Time stamp: " +
reformat(entries[i].getTimeStamp().toDate().toString()));
}
}
}
}
void displayCache() {
CredentialsCache cache = (CredentialsCache)target;
sun.security.krb5.internal.ccache.Credentials[] creds =
cache.getCredsList();
if (creds == null) {
System.out.println ("No credentials available in the cache " +
name);
System.exit(-1);
}
System.out.println("\nCredentials cache: " + name);
String defaultPrincipal = cache.getPrimaryPrincipal().toString();
int num = creds.length;
if (num == 1)
System.out.println("\nDefault principal: " +
defaultPrincipal + ", " +
creds.length + " entry found.\n");
else
System.out.println("\nDefault principal: " +
defaultPrincipal + ", " +
creds.length + " entries found.\n");
String starttime = null;
String endtime = null;
String servicePrincipal = null;
String etype = null;
if (creds != null) {
for (int i = 0; i < creds.length; i++) {
try {
starttime =
reformat(creds[i].getAuthTime().toDate().toString());
endtime =
reformat(creds[i].getEndTime().toDate().toString());
servicePrincipal =
creds[i].getServicePrincipal().toString();
System.out.println("[" + (i + 1) + "] " +
" Service Principal: " +
servicePrincipal);
System.out.println(" Valid starting: " + starttime);
System.out.println(" Expires: " + endtime);
if (options[0] == 'e') {
etype = EType.toString(creds[i].getEType());
System.out.println("\t Encryption type: " + etype);
}
if (options[1] == 'f') {
System.out.println("\t Flags: " +
creds[i].getTicketFlags().toString());
}
} catch (RealmException e) {
System.out.println("Error reading principal from "+
"the entry.");
if (DEBUG) {
e.printStackTrace();
}
System.exit(-1);
}
}
} else {
System.out.println("\nNo entries found.");
}
}
void displayMessage(String target) {
if (name == null) {
name = "";
}
System.out.println(target + " " + name + " not found.");
}
Reformats the date from the form -
dow mon dd hh:mm:ss zzz yyyy to mon/dd/yyyy hh:mm
where dow is the day of the week, mon is the month,
dd is the day of the month, hh is the hour of
the day, mm is the minute within the hour,
ss is the second within the minute, zzz is the time zone,
and yyyy is the year.
Params: - date – the string form of Date object.
/**
* Reformats the date from the form -
* dow mon dd hh:mm:ss zzz yyyy to mon/dd/yyyy hh:mm
* where dow is the day of the week, mon is the month,
* dd is the day of the month, hh is the hour of
* the day, mm is the minute within the hour,
* ss is the second within the minute, zzz is the time zone,
* and yyyy is the year.
* @param date the string form of Date object.
*/
String reformat(String date) {
return (date.substring(4, 7) + " " + date.substring(8, 10) +
", " + date.substring(24)
+ " " + date.substring(11, 16));
}
Printes out the help information.
/**
* Printes out the help information.
*/
void printHelp() {
System.out.println("\nUsage: klist " +
"[[-c] [-f] [-e]] [-k [-t] [-K]] [name]");
System.out.println(" name\t name of credentials cache or " +
" keytab with the prefix. File-based cache or "
+ "keytab's prefix is FILE:.");
System.out.println(" -c specifes that credential cache is to be " +
"listed");
System.out.println(" -k specifies that key tab is to be listed");
System.out.println(" options for credentials caches:");
System.out.println("\t-f \t shows credentials flags");
System.out.println("\t-e \t shows the encryption type");
System.out.println(" options for keytabs:");
System.out.println("\t-t \t shows keytab entry timestamps");
System.out.println("\t-K \t shows keytab entry key value");
System.out.println("\t-e \t shows keytab entry key type");
System.out.println("\nUsage: java sun.security.krb5.tools.Klist " +
"-help for help.");
}
}