org.apache.hadoop.security.authentication.util
Class KerberosUtil

java.lang.Object
  org.apache.hadoop.security.authentication.util.KerberosUtil

public class KerberosUtil
extends Object

Constructor Summary

KerberosUtil()

Method Summary

static String	getDefaultRealm()
static String	getKrb5LoginModuleName()
static Oid	getOidInstance(String oidName)
static String	getServicePrincipal(String service, String hostname) Create Kerberos principal for a given service and hostname.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

KerberosUtil

public KerberosUtil()

Method Detail

getKrb5LoginModuleName

public static String getKrb5LoginModuleName()

getOidInstance

public static Oid getOidInstance(String oidName)
                          throws ClassNotFoundException,
                                 GSSException,
                                 NoSuchFieldException,
                                 IllegalAccessException

Throws:

ClassNotFoundException

GSSException

NoSuchFieldException

IllegalAccessException

getDefaultRealm

public static String getDefaultRealm()
                              throws ClassNotFoundException,
                                     NoSuchMethodException,
                                     IllegalArgumentException,
                                     IllegalAccessException,
                                     InvocationTargetException

Throws:

ClassNotFoundException

NoSuchMethodException

IllegalArgumentException

IllegalAccessException

InvocationTargetException

getServicePrincipal

public static final String getServicePrincipal(String service,
                                               String hostname)
                                        throws UnknownHostException

Create Kerberos principal for a given service and hostname. It converts hostname to lower case. If hostname is null or "0.0.0.0", it uses dynamically looked-up fqdn of the current host instead.

Parameters:

service - Service for which you want to generate the principal.

hostname - Fully-qualified domain name.

Returns:

Converted Kerberos principal name.

Throws:

UnknownHostException - If no IP address for the local host could be found.