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- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- package javax.security.auth.kerberos;
- import java.io.IOException;
- import java.io.ObjectInputStream;
- import java.io.ObjectOutputStream;
- import java.io.ObjectStreamField;
- import java.io.Serializable;
- import java.security.Permission;
- import java.security.PermissionCollection;
- import java.util.Enumeration;
- import java.util.NoSuchElementException;
- import java.util.Vector;
- import org.apache.harmony.auth.internal.nls.Messages;
- /**
- * Specific PermissionCollection for storing ServicePermissions
- *
- */
- final class KrbServicePermissionCollection extends PermissionCollection
- implements Serializable {
- private static final long serialVersionUID = -4118834211490102011L;
- private static final ObjectStreamField[] serialPersistentFields = { new ObjectStreamField(
- "permissions", Vector.class) }; //$NON-NLS-1$
- private transient ServicePermission[] items = new ServicePermission[10];
- private transient int offset;
- // initialization of a collection
- KrbServicePermissionCollection() {
- }
- /**
- * Adds a ServicePermission to the collection.
- */
- @Override
- public void add(Permission permission) {
- if (isReadOnly()) {
- throw new SecurityException(Messages.getString("auth.21")); //$NON-NLS-1$
- }
- if (permission == null || !(permission instanceof ServicePermission)) {
- throw new IllegalArgumentException(Messages.getString("auth.22",permission)); //$NON-NLS-1$
- }
- synchronized (this) {
- if (offset == items.length) {
- ServicePermission[] sp = new ServicePermission[items.length * 2];
- System.arraycopy(items, 0, sp, 0, offset);
- items = sp;
- }
- items[offset++] = (ServicePermission) permission;
- }
- }
- /**
- * Returns enumeration of the collection.
- */
- @Override
- public Enumeration<Permission> elements() {
- return new Enumeration<Permission>() {
- private int index = 0;
- public boolean hasMoreElements() {
- return index < offset;
- }
- public Permission nextElement() {
- if (index == offset) {
- throw new NoSuchElementException();
- }
- return items[index++];
- }
- };
- }
- /**
- * Returns true if this collection implies the specified permission.
- */
- @Override
- public boolean implies(Permission permission) {
- if (permission == null || !(permission instanceof ServicePermission)) {
- return false;
- }
- synchronized (this) {
- for (int i = 0; i < offset; i++) {
- if (items[i].implies(permission)) {
- return true;
- }
- }
- }
- return false;
- }
- // white collection to stream
- private void writeObject(java.io.ObjectOutputStream out) throws IOException {
- Vector<ServicePermission> permissions;
- permissions = new Vector<ServicePermission>(offset);
- for (int i = 0; i < offset; permissions.add(items[i++])) {
- }
- ObjectOutputStream.PutField fields = out.putFields();
- fields.put("permissions", permissions); //$NON-NLS-1$
- out.writeFields();
- }
- // read collection from stream
- private void readObject(java.io.ObjectInputStream in) throws IOException,
- ClassNotFoundException {
- ObjectInputStream.GetField fields = in.readFields();
- Vector<?> permissions = (Vector<?>) fields.get("permissions", null); //$NON-NLS-1$
- items = new ServicePermission[permissions.size() * 2];
- for (offset = 0; offset < items.length / 2;) {
- Object obj = permissions.get(offset);
- if (obj == null || !(obj instanceof ServicePermission)) {
- throw new IllegalArgumentException(Messages.getString("auth.22", obj)); //$NON-NLS-1$
- }
- items[offset++] = (ServicePermission) obj;
- }
- }
- }
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