net.jini.constraint
Class ConstraintTrustVerifier

java.lang.Object
  net.jini.constraint.ConstraintTrustVerifier

All Implemented Interfaces:

TrustVerifier

public class ConstraintTrustVerifier
extends Object
implements TrustVerifier

Trust verifier for instances of the constraint classes defined in the net.jini.core.constraint package, and for the BasicMethodConstraints, X500Principal and KerberosPrincipal classes. This class is intended to be specified in a resource to configure the operation of Security.verifyObjectTrust.

Since:

2.0

Author:

Sun Microsystems, Inc.

Nested Class Summary

Nested classes/interfaces inherited from interface net.jini.security.TrustVerifier

TrustVerifier.Context

Constructor Summary

ConstraintTrustVerifier()
Creates an instance.

Method Summary

boolean

isTrustedObject(Object obj, TrustVerifier.Context ctx) Returns true if the specified object is known to be trusted to correctly implement its contract; returns false otherwise.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConstraintTrustVerifier

public ConstraintTrustVerifier()

Creates an instance.

Method Detail

isTrustedObject

public boolean isTrustedObject(Object obj,
                               TrustVerifier.Context ctx)
                        throws RemoteException

Returns true if the specified object is known to be trusted to correctly implement its contract; returns false otherwise. Returns true if any of the following conditions holds, and returns false otherwise:

• The object is an instance of any of the following classes:
  • ClientAuthentication
  • ClientMaxPrincipalType
  • ClientMinPrincipalType
  • Confidentiality
  • DelegationAbsoluteTime
  • DelegationRelativeTime
  • Delegation
  • Integrity
  • ServerAuthentication
• The object is an instance of any of the following classes:
  • ClientMinPrincipal
  • ClientMaxPrincipal
  • ServerMinPrincipal
  and all of the principals in that object are trusted (determined by calling the isTrustedObject method on the specified context with each principal)
• The object is an instance of ConstraintAlternatives and all of the constraint alternatives in that object are trusted (determined by calling the isTrustedObject method on the specified context with each constraint alternative)
• The object is an instance of BasicMethodConstraints and all the InvocationConstraints instances in that object are trusted (determined by calling the isTrustedObject method on the specified context with each instance)
• The object is an instance of InvocationConstraints and all of the constraints (both requirements and preferences) in that object are trusted (determined by calling the isTrustedObject method on the specified context with each constraint)
• The object is an instance of X500Principal or KerberosPrincipal

Specified by:

isTrustedObject in interface TrustVerifier

Parameters:

obj - the object in which to verify trust

ctx - the trust verifier context, to aid in verification of the specified object and its components

Returns:

true if the specified object is known to be trusted to correctly implement its contract; false otherwise

Throws:

NullPointerException - if any argument is null

RemoteException - if a communication-related exception occurs