| /* |
| * Copyright (c) 1999, 2007, Oracle and/or its affiliates. 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package javax.crypto; |
| |
| import java.security.*; |
| import java.util.Enumeration; |
| import java.util.Vector; |
| |
| /** |
| * The CryptoAllPermission is a permission that implies |
| * any other crypto permissions. |
| * <p> |
| * |
| * @see java.security.Permission |
| * @see java.security.AllPermission |
| * |
| * @author Sharon Liu |
| * @since 1.4 |
| */ |
| |
| final class CryptoAllPermission extends CryptoPermission { |
| |
| private static final long serialVersionUID = -5066513634293192112L; |
| |
| // This class is similar to java.security.AllPermission. |
| static final String ALG_NAME = "CryptoAllPermission"; |
| static final CryptoAllPermission INSTANCE = |
| new CryptoAllPermission(); |
| |
| private CryptoAllPermission() { |
| super(ALG_NAME); |
| } |
| |
| /** |
| * Checks if the specified permission is implied by |
| * this object. |
| * |
| * @param p the permission to check against. |
| * |
| * @return true if the specified permission is an |
| * instance of CryptoPermission. |
| */ |
| public boolean implies(Permission p) { |
| return (p instanceof CryptoPermission); |
| } |
| |
| /** |
| * Checks two CryptoAllPermission objects for equality. |
| * Two CryptoAllPermission objects are always equal. |
| * |
| * @param obj the object to test for equality with this object. |
| * |
| * @return true if <i>obj</i> is a CryptoAllPermission object. |
| */ |
| public boolean equals(Object obj) { |
| return (obj == INSTANCE); |
| } |
| |
| /** |
| * |
| * Returns the hash code value for this object. |
| * |
| * @return a hash code value for this object. |
| */ |
| public int hashCode() { |
| return 1; |
| } |
| |
| /** |
| * Returns a new PermissionCollection object for storing |
| * CryptoAllPermission objects. |
| * <p> |
| * |
| * @return a new PermissionCollection object suitable for |
| * storing CryptoAllPermissions. |
| */ |
| public PermissionCollection newPermissionCollection() { |
| return new CryptoAllPermissionCollection(); |
| } |
| } |
| |
| /** |
| * A CryptoAllPermissionCollection stores a collection |
| * of CryptoAllPermission permissions. |
| * |
| * @see java.security.Permission |
| * @see java.security.Permissions |
| * @see javax.crypto.CryptoPermission |
| * |
| * @author Sharon Liu |
| */ |
| final class CryptoAllPermissionCollection extends PermissionCollection |
| implements java.io.Serializable |
| { |
| |
| private static final long serialVersionUID = 7450076868380144072L; |
| |
| // true if a CryptoAllPermission has been added |
| private boolean all_allowed; |
| |
| /** |
| * Create an empty CryptoAllPermissions object. |
| */ |
| CryptoAllPermissionCollection() { |
| all_allowed = false; |
| } |
| |
| /** |
| * Adds a permission to the CryptoAllPermissions. |
| * |
| * @param permission the Permission object to add. |
| * |
| * @exception SecurityException - if this CryptoAllPermissionCollection |
| * object has been marked readonly |
| */ |
| public void add(Permission permission) |
| { |
| if (isReadOnly()) |
| throw new SecurityException("attempt to add a Permission to " + |
| "a readonly PermissionCollection"); |
| |
| if (permission != CryptoAllPermission.INSTANCE) |
| return; |
| |
| all_allowed = true; |
| } |
| |
| /** |
| * Check and see if this set of permissions implies the permissions |
| * expressed in "permission". |
| * |
| * @param p the Permission object to compare |
| * |
| * @return true if the given permission is implied by this |
| * CryptoAllPermissionCollection. |
| */ |
| public boolean implies(Permission permission) |
| { |
| if (!(permission instanceof CryptoPermission)) { |
| return false; |
| } |
| return all_allowed; |
| } |
| |
| /** |
| * Returns an enumeration of all the CryptoAllPermission |
| * objects in the container. |
| * |
| * @return an enumeration of all the CryptoAllPermission objects. |
| */ |
| public Enumeration elements() { |
| Vector v = new Vector(1); |
| if (all_allowed) v.add(CryptoAllPermission.INSTANCE); |
| return v.elements(); |
| } |
| } |