/*
 * Copyright 1998-2005 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

package javax.security.auth;

/**
 * This class is for authentication permissions.
 * An AuthPermission contains a name
 * (also referred to as a "target name")
 * but no actions list; you either have the named permission
 * or you don't.
 *
 * <p> The target name is the name of a security configuration parameter
 * (see below).  Currently the AuthPermission object is used to
 * guard access to the Policy, Subject, LoginContext,
 * and Configuration objects.
 *
 * <p> The possible target names for an Authentication Permission are:
 *
 * <pre>
 *      doAs -                  allow the caller to invoke the
 *                              <code>Subject.doAs</code> methods.
 *
 *      doAsPrivileged -        allow the caller to invoke the
 *                              <code>Subject.doAsPrivileged</code> methods.
 *
 *      getSubject -            allow for the retrieval of the
 *                              Subject(s) associated with the
 *                              current Thread.
 *
 *      getSubjectFromDomainCombiner -  allow for the retrieval of the
 *                              Subject associated with the
 *                              a <code>SubjectDomainCombiner</code>.
 *
 *      setReadOnly -           allow the caller to set a Subject
 *                              to be read-only.
 *
 *      modifyPrincipals -      allow the caller to modify the <code>Set</code>
 *                              of Principals associated with a
 *                              <code>Subject</code>
 *
 *      modifyPublicCredentials - allow the caller to modify the
 *                              <code>Set</code> of public credentials
 *                              associated with a <code>Subject</code>
 *
 *      modifyPrivateCredentials - allow the caller to modify the
 *                              <code>Set</code> of private credentials
 *                              associated with a <code>Subject</code>
 *
 *      refreshCredential -     allow code to invoke the <code>refresh</code>
 *                              method on a credential which implements
 *                              the <code>Refreshable</code> interface.
 *
 *      destroyCredential -     allow code to invoke the <code>destroy</code>
 *                              method on a credential <code>object</code>
 *                              which implements the <code>Destroyable</code>
 *                              interface.
 *
 *      createLoginContext.{name} -  allow code to instantiate a
 *                              <code>LoginContext</code> with the
 *                              specified <i>name</i>.  <i>name</i>
 *                              is used as the index into the installed login
 *                              <code>Configuration</code>
 *                              (that returned by
 *                              <code>Configuration.getConfiguration()</code>).
 *                              <i>name</i> can be wildcarded (set to '*')
 *                              to allow for any name.
 *
 *      getLoginConfiguration - allow for the retrieval of the system-wide
 *                              login Configuration.
 *
 *      createLoginConfiguration.{type} - allow code to obtain a Configuration
 *                              object via
 *                              <code>Configuration.getInstance</code>.
 *
 *      setLoginConfiguration - allow for the setting of the system-wide
 *                              login Configuration.
 *
 *      refreshLoginConfiguration - allow for the refreshing of the system-wide
 *                              login Configuration.
 * </pre>
 *
 * <p> The following target name has been deprecated in favor of
 * <code>createLoginContext.{name}</code>.
 *
 * <pre>
 *      createLoginContext -    allow code to instantiate a
 *                              <code>LoginContext</code>.
 * </pre>
 *
 * <p> <code>javax.security.auth.Policy</code> has been
 * deprecated in favor of <code>java.security.Policy</code>.
 * Therefore, the following target names have also been deprecated:
 *
 * <pre>
 *      getPolicy -             allow the caller to retrieve the system-wide
 *                              Subject-based access control policy.
 *
 *      setPolicy -             allow the caller to set the system-wide
 *                              Subject-based access control policy.
 *
 *      refreshPolicy -         allow the caller to refresh the system-wide
 *                              Subject-based access control policy.
 * </pre>
 *
 */
public final class AuthPermission extends
java.security.BasicPermission {

    private static final long serialVersionUID = 5806031445061587174L;

    /**
     * Creates a new AuthPermission with the specified name.
     * The name is the symbolic name of the AuthPermission.
     *
     * <p>
     *
     * @param name the name of the AuthPermission
     *
     * @throws NullPointerException if <code>name</code> is <code>null</code>.
     * @throws IllegalArgumentException if <code>name</code> is empty.
     */
    public AuthPermission(String name) {
        // for backwards compatibility --
        // createLoginContext is deprecated in favor of createLoginContext.*
        super("createLoginContext".equals(name) ?
                "createLoginContext.*" : name);
    }

    /**
     * Creates a new AuthPermission object with the specified name.
     * The name is the symbolic name of the AuthPermission, and the
     * actions String is currently unused and should be null.
     *
     * <p>
     *
     * @param name the name of the AuthPermission <p>
     *
     * @param actions should be null.
     *
     * @throws NullPointerException if <code>name</code> is <code>null</code>.
     * @throws IllegalArgumentException if <code>name</code> is empty.
     */
    public AuthPermission(String name, String actions) {
        // for backwards compatibility --
        // createLoginContext is deprecated in favor of createLoginContext.*
        super("createLoginContext".equals(name) ?
                "createLoginContext.*" : name, actions);
    }
}