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// Portions Copyright [2018] [Payara Foundation and/or its affiliates]
package com.sun.enterprise.security.jauth;
import java.util.Map;
import javax.security.auth.Subject;
import javax.security.auth.callback.CallbackHandler;
/**
* This interface describes a module that can be configured for a ClientAuthContext. The main purpose of this module is
* to secure requests and to validate received responses.
*
*
* A module implementation must assume it may be used to issue different requests as different clients. It is the module
* implementation's responsibility to properly store and restore any state as necessary. A module that does not need to
* do so may remain completely stateless.
*
*
* Modules are passed a shared state Map that can be used to save state across a sequence of calls from
* secureRequest to validateResponse to disposeSubject. The same Map instance is
* guaranteed to be passed to all methods in the call sequence. Furthermore, it should be assumed that each call
* sequence is passed its own unique shared state Map instance.
*
* @version %I%, %G%
*/
public interface ClientAuthModule {
/**
* Initialize this module with a policy to enforce, a CallbackHandler, and administrative options.
*
*
* Either the the request policy or the response policy (or both) must be non-null.
*
* @param requestPolicy the request policy this module is to enforce, which may be null.
*
* @param responsePolicy the response policy this module is to enforce, which may be null.
*
* @param handler CallbackHandler used to request information from the caller.
*
* @param options administrative options.
*/
void initialize(AuthPolicy requestPolicy,
AuthPolicy responsePolicy,
CallbackHandler handler,
Map options);
/**
* Secure a request message.
*
*
* Attach authentication credentials to an initial request, sign/encrypt a request, or respond to a server challenge,
* for example.
*
* @param param an authentication parameter that encapsulates the client request and server response objects.
*
* @param subject the subject may be used by configured modules to obtain Principals and credentials necessary to secure
* the request, or null. If null, the module may use a CallbackHandler to obtain any information necessary to secure the
* request.
*
* @param sharedState a Map for modules to save state across a sequence of calls from secureRequest to
* validateResponse to disposeSubject.
*
* @exception AuthException if the operation failed.
*/
void secureRequest(AuthParam param,
Subject subject,
Map sharedState)
throws AuthException;
/**
* Validate received response.
*
*
* Validation may include verifying signature in response, or decrypting response contents, for example.
*
* @param param an authentication parameter that encapsulates the client request and server response objects.
*
* @param subject the subject may be used by configured modules to store the Principals and credentials related to the
* identity validated in the response.
*
* @param sharedState a Map for modules to save state across a sequence of calls from secureRequest to
* validateResponse to disposeSubject.
*
* @exception AuthException if the operation failed.
*/
void validateResponse(AuthParam param,
Subject subject,
Map sharedState)
throws AuthException;
/**
* Dispose of the Subject.
*
*
* Remove Principals or credentials from the Subject object that were stored during validateResponse.
*
* @param subject Subject instance to be disposed.
*
* @param sharedState a Map for modules to save state across a sequence of calls from secureRequest to
* validateResponse to disposeSubject.
*
* @exception AuthException if the operation failed.
*/
void disposeSubject(Subject subject, Map sharedState)
throws AuthException;
}