org.apache.http.impl.auth

Class KerberosScheme

java.lang.Object

org.apache.http.impl.auth.AuthSchemeBase

org.apache.http.impl.auth.GGSSchemeBase

org.apache.http.impl.auth.KerberosScheme

All Implemented Interfaces:

AuthScheme, ContextAwareAuthScheme

public class KerberosScheme
extends GGSSchemeBase

KERBEROS authentication scheme.

Since:

4.2

Field Summary

Fields inherited from class org.apache.http.impl.auth.AuthSchemeBase

challengeState

Constructor Summary

Constructors

Constructor and Description
KerberosScheme()
KerberosScheme(boolean stripPort)
KerberosScheme(boolean stripPort, boolean useCanonicalHostname)

Method Summary

Methods

Modifier and Type	Method and Description
org.apache.http.Header	authenticate(Credentials credentials, org.apache.http.HttpRequest request, org.apache.http.protocol.HttpContext context) Produces KERBEROS authorization Header based on token created by processChallenge.
protected byte[]	generateToken(byte[] input, String authServer)
protected byte[]	generateToken(byte[] input, String authServer, Credentials credentials)
String	getParameter(String name) There are no valid parameters for KERBEROS authentication so this method always returns null.
String	getRealm() The concept of an authentication realm is not supported by the Negotiate authentication scheme.
String	getSchemeName() Returns textual designation of the given authentication scheme.
boolean	isConnectionBased() Returns true.

Methods inherited from class org.apache.http.impl.auth.GGSSchemeBase

authenticate, generateGSSToken, generateGSSToken, getManager, isComplete, parseChallenge

Methods inherited from class org.apache.http.impl.auth.AuthSchemeBase

getChallengeState, isProxy, processChallenge, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

KerberosScheme

public KerberosScheme(boolean stripPort,
              boolean useCanonicalHostname)

Since:

4.4

KerberosScheme

public KerberosScheme(boolean stripPort)

KerberosScheme

public KerberosScheme()

Method Detail

getSchemeName

public String getSchemeName()

Description copied from interface: AuthScheme

Returns textual designation of the given authentication scheme.

Returns:

the name of the given authentication scheme

authenticate

public org.apache.http.Header authenticate(Credentials credentials,
                                  org.apache.http.HttpRequest request,
                                  org.apache.http.protocol.HttpContext context)
                                    throws AuthenticationException

Produces KERBEROS authorization Header based on token created by processChallenge.

Specified by:

authenticate in interface ContextAwareAuthScheme

Overrides:

authenticate in class GGSSchemeBase

Parameters:

credentials - not used by the KERBEROS scheme.

request - The request being authenticated

context - HTTP context

Returns:

KERBEROS authentication Header

Throws:

AuthenticationException - if authentication string cannot be generated due to an authentication failure

generateToken

protected byte[] generateToken(byte[] input,
                   String authServer)
                        throws GSSException

Overrides:

generateToken in class GGSSchemeBase

Throws:

GSSException

generateToken

protected byte[] generateToken(byte[] input,
                   String authServer,
                   Credentials credentials)
                        throws GSSException

Overrides:

generateToken in class GGSSchemeBase

Throws:

GSSException

getParameter

public String getParameter(String name)

There are no valid parameters for KERBEROS authentication so this method always returns null.

Parameters:

name - The name of the parameter to be returned

Returns:

null

getRealm

public String getRealm()

The concept of an authentication realm is not supported by the Negotiate authentication scheme. Always returns null.

Returns:

null

isConnectionBased

public boolean isConnectionBased()

Returns true. KERBEROS authentication scheme is connection based.

Returns:

true.