org.jgroups.auth
Class DemoToken

java.lang.Object
  org.jgroups.auth.AuthToken
      org.jgroups.auth.DemoToken

All Implemented Interfaces:

AUTH.UpHandler, Streamable

public class DemoToken
extends AuthToken
implements AUTH.UpHandler

AuthToken implementation which shows how to send messages back and forth in order to perform authentication. Could be used as a template for a challenge-response based AuthToken impl.

Since:

3.3

Author:

Bela Ban

Nested Class Summary

static class	DemoToken.DemoHeader
protected static class	DemoToken.Entry

Field Summary

protected long	block_time
protected static short	ID
protected java.util.Map<Address,DemoToken.Entry>	pending_requests

Fields inherited from class org.jgroups.auth.AuthToken

auth, log

Constructor Summary

DemoToken()

Method Summary

boolean	authenticate(AuthToken token, Message msg) This method should be implemented to perform the actual authentication of joining members.
protected static byte[]	encrypt(byte[] buf)
protected static byte[]	generateRandomBytes()
java.lang.String	getName() Used to return the full package and class name of the implementation.
boolean	handleUpEvent(Event evt) Called when an up event has been received
protected static long	hash(byte[] buf)
void	init()
void	readFrom(java.io.DataInput in) Read the state of the current object (including superclasses) from instream Note that the input stream must not be closed
int	size() The size of the marshalled AuthToken
void	writeTo(java.io.DataOutput out) Write the entire state of the current object (including superclasses) to outstream.

Methods inherited from class org.jgroups.auth.AuthToken

setAuth

Methods inherited from class java.lang.Object

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

Field Detail

ID

protected static final short ID

See Also:

Constant Field Values

block_time

protected long block_time

pending_requests

protected final java.util.Map<Address,DemoToken.Entry> pending_requests

Constructor Detail

DemoToken

public DemoToken()

Method Detail

getName

public java.lang.String getName()

Description copied from class: AuthToken

Used to return the full package and class name of the implementation. This is used by the AUTH protocol to create an instance of the implementation.

Specified by:

getName in class AuthToken

Returns:

a java.lang.String object of the package and class name

init

public void init()

Overrides:

init in class AuthToken

authenticate

public boolean authenticate(AuthToken token,
                            Message msg)

Description copied from class: AuthToken

This method should be implemented to perform the actual authentication of joining members.

Specified by:

authenticate in class AuthToken

Parameters:

token - the token sent by the joiner

msg - the Message object containing the actual JOIN_REQ

Returns:

true if authenticaion passed or false if it failed.

writeTo

public void writeTo(java.io.DataOutput out)
             throws java.lang.Exception

Description copied from interface: Streamable

Write the entire state of the current object (including superclasses) to outstream. Note that the output stream must not be closed

Specified by:

writeTo in interface Streamable

Throws:

java.lang.Exception

readFrom

public void readFrom(java.io.DataInput in)
              throws java.lang.Exception

Description copied from interface: Streamable

Read the state of the current object (including superclasses) from instream Note that the input stream must not be closed

Specified by:

readFrom in interface Streamable

Throws:

java.lang.Exception

size

public int size()

Description copied from class: AuthToken

The size of the marshalled AuthToken

Specified by:

size in class AuthToken

handleUpEvent

public boolean handleUpEvent(Event evt)

Description copied from interface: AUTH.UpHandler

Called when an up event has been received

Specified by:

handleUpEvent in interface AUTH.UpHandler

Parameters:

evt - the event

Returns:

true if the event should be pass up, else false

generateRandomBytes

protected static byte[] generateRandomBytes()

encrypt

protected static byte[] encrypt(byte[] buf)

hash

protected static long hash(byte[] buf)