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Brazil project: Class AclSwitchHandler
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sunlabs.brazil.handler Class AclSwitchHandler

java.lang.Object
  |
  +--sunlabs.brazil.handler.AclSwitchHandler
All Implemented Interfaces:
Handler
public class AclSwitchHandler
extends Object
implements Handler

Simple access control hander based on url prefixes. Looks up list of valid prefixes in Request.props , and allows/denies access based on those prefixes. This is expected to work in conjunction with an upstream handler, such as RolesHandler or BasicAuthHandler that examines the request, and place credentials into the request object. The credentials consist of url prefixes. Documents whose URL prefix don't match a credential are rejected. If a credential does not begin with a slash (/), the init(sunlabs.brazil.server.Server, java.lang.String) prefix for this handler is prepended.

Constructor Summary
AclSwitchHandler()            
 
Method Summary
 boolean init(Server server, String prefix)           Initializes the handler.
 boolean respond(Request request)           Responds to an HTTP request.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

AclSwitchHandler

public AclSwitchHandler()
Method Detail

init

public boolean init(Server server,
                    String prefix)
Description copied from interface: Handler
Initializes the handler.
Specified by:
init in interface Handler
Tags copied from interface: Handler
Parameters:
server - The HTTP server that created this Handler. Typical Handlers will use Server.props to obtain run-time configuration information.
prefix - A prefix that this Handler may prepend to all of the keys that it uses to extract configuration information from Server.props. This is set (by the Server and ChainHandler) to help avoid configuration parameter namespace collisions.

For example, if a Handler uses the property "account", and the specified prefix is "bank.", then the Handler should actually examine the property "bank.account" in Server.props.

Returns:
true if this Handler initialized successfully, false otherwise. If false is returned, this Handler should not be used.

respond

public boolean respond(Request request)
                throws IOException
Description copied from interface: Handler
Responds to an HTTP request.
Specified by:
respond in interface Handler
Tags copied from interface: Handler
Parameters:
request - The Request object that represents the HTTP request.
Returns:
true if the request was handled. A request was handled if a response was supplied to the client, typically by calling Request.sendResponse() or Request.sendError.
Throws:
IOException - if there was an I/O error while sending the response to the client. Typically, in that case, the Server will (try to) send an error message to the client and then close the client's connection.

The IOException should not be used to silently ignore problems such as being unable to access some server-side resource (for example getting a FileNotFoundException due to not being able to open a file). In that case, the Handler's duty is to turn that IOException into a HTTP response indicating, in this case, that a file could not be found.

Overview  Package   Class  Tree  Deprecated  Index 
Version 2.2, Generated 07/25/00
Copyright (c) 2000, Sun Microsystems.
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