org.glassfish.grizzly.samples.simpleauth

Class ServerAuthFilter

java.lang.Object

org.glassfish.grizzly.filterchain.BaseFilter

org.glassfish.grizzly.samples.simpleauth.ServerAuthFilter

All Implemented Interfaces:

org.glassfish.grizzly.filterchain.Filter

public class ServerAuthFilter
extends org.glassfish.grizzly.filterchain.BaseFilter

Server authentication filter, which intercepts client<->server communication. Filter checks, if coming message is authentication request, sent by client. If yes - the filter generated client id and sends the authentication reponse to a client. If incoming message is not authentication request - filter checks whether client connection has been authenticated. If yes - filter removes client authentication header ("auth-id: ") from a message and pass control to a next filter in a chain, otherwise - throws an Exception.

Author:

Alexey Stashok

Constructor Summary

Constructors

Constructor and Description
ServerAuthFilter()

Method Summary

Modifier and Type	Method and Description
org.glassfish.grizzly.filterchain.NextAction	handleClose(org.glassfish.grizzly.filterchain.FilterChainContext ctx) The method is called, when a connection gets closed.
org.glassfish.grizzly.filterchain.NextAction	handleRead(org.glassfish.grizzly.filterchain.FilterChainContext ctx) The method is called once we have received MultiLinePacket from a client.
org.glassfish.grizzly.filterchain.NextAction	handleWrite(org.glassfish.grizzly.filterchain.FilterChainContext ctx) The method is called each time, when server sends a message to a client.

Methods inherited from class org.glassfish.grizzly.filterchain.BaseFilter

createContext, exceptionOccurred, handleAccept, handleConnect, handleEvent, onAdded, onFilterChainChanged, onRemoved, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ServerAuthFilter

public ServerAuthFilter()

Method Detail

handleRead

public org.glassfish.grizzly.filterchain.NextAction handleRead(org.glassfish.grizzly.filterchain.FilterChainContext ctx)
                                                        throws IOException

The method is called once we have received MultiLinePacket from a client. Filter check if incoming message is the client authentication request. If yes - we generate new client id and send it back in the authentication response. If the message is not authentication request - we check message authentication header to correspond to a connection id in the authenticated clients map. If it's ok - the filter removes authentication header from the message and pass the message to a next filter in a filter chain, otherwise, if authentication failed - the filter throws an Exception

Specified by:

handleRead in interface org.glassfish.grizzly.filterchain.Filter

Overrides:

handleRead in class org.glassfish.grizzly.filterchain.BaseFilter

Parameters:

ctx - Request processing context

Returns:

NextAction

Throws:

IOException

handleWrite

public org.glassfish.grizzly.filterchain.NextAction handleWrite(org.glassfish.grizzly.filterchain.FilterChainContext ctx)
                                                         throws IOException

The method is called each time, when server sends a message to a client. First of all filter check if this packet is not authentication-response. If yes - filter just passes control to a next filter in a chain, if not - filter gets the client id from its local authenticated clients map and adds "auth-id: " header to the outgoing message and finally passes control to a next filter in a chain.

Specified by:

handleWrite in interface org.glassfish.grizzly.filterchain.Filter

Overrides:

handleWrite in class org.glassfish.grizzly.filterchain.BaseFilter

Parameters:

ctx - Response processing context

Returns:

NextAction

Throws:

IOException

handleClose

public org.glassfish.grizzly.filterchain.NextAction handleClose(org.glassfish.grizzly.filterchain.FilterChainContext ctx)
                                                         throws IOException

The method is called, when a connection gets closed. We remove connection entry in authenticated connections map.

Specified by:

handleClose in interface org.glassfish.grizzly.filterchain.Filter

Overrides:

handleClose in class org.glassfish.grizzly.filterchain.BaseFilter

Parameters:

ctx - Request processing context

Returns:

NextAction

Throws:

IOException