author | jjg |
Mon, 15 Aug 2011 11:48:20 -0700 | |
changeset 10336 | 0bb1999251f8 |
parent 9035 | 1255eb81cc2f |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package java.security; |
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import java.util.*; |
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import java.io.ObjectStreamField; |
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import java.io.ObjectOutputStream; |
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import java.io.ObjectInputStream; |
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import java.io.IOException; |
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/** |
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* A UnresolvedPermissionCollection stores a collection |
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* of UnresolvedPermission permissions. |
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* |
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* @see java.security.Permission |
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* @see java.security.Permissions |
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* @see java.security.UnresolvedPermission |
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* |
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* |
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* @author Roland Schemers |
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* |
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* @serial include |
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*/ |
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final class UnresolvedPermissionCollection |
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extends PermissionCollection |
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implements java.io.Serializable |
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{ |
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/** |
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* Key is permission type, value is a list of the UnresolvedPermissions |
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* of the same type. |
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* Not serialized; see serialization section at end of class. |
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*/ |
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private transient Map<String, List<UnresolvedPermission>> perms; |
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/** |
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* Create an empty UnresolvedPermissionCollection object. |
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* |
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*/ |
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public UnresolvedPermissionCollection() { |
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perms = new HashMap<String, List<UnresolvedPermission>>(11); |
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} |
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/** |
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* Adds a permission to this UnresolvedPermissionCollection. |
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* The key for the hash is the unresolved permission's type (class) name. |
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* |
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* @param permission the Permission object to add. |
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*/ |
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public void add(Permission permission) |
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{ |
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if (! (permission instanceof UnresolvedPermission)) |
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throw new IllegalArgumentException("invalid permission: "+ |
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permission); |
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UnresolvedPermission up = (UnresolvedPermission) permission; |
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List<UnresolvedPermission> v; |
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synchronized (this) { |
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v = perms.get(up.getName()); |
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if (v == null) { |
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v = new ArrayList<UnresolvedPermission>(); |
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perms.put(up.getName(), v); |
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} |
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} |
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synchronized (v) { |
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v.add(up); |
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} |
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} |
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/** |
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* get any unresolved permissions of the same type as p, |
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* and return the List containing them. |
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*/ |
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List<UnresolvedPermission> getUnresolvedPermissions(Permission p) { |
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synchronized (this) { |
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return perms.get(p.getClass().getName()); |
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} |
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} |
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/** |
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* always returns false for unresolved permissions |
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* |
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*/ |
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public boolean implies(Permission permission) |
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{ |
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return false; |
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} |
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/** |
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* Returns an enumeration of all the UnresolvedPermission lists in the |
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* container. |
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* |
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* @return an enumeration of all the UnresolvedPermission objects. |
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*/ |
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public Enumeration<Permission> elements() { |
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List<Permission> results = |
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new ArrayList<>(); // where results are stored |
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// Get iterator of Map values (which are lists of permissions) |
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synchronized (this) { |
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for (List<UnresolvedPermission> l : perms.values()) { |
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synchronized (l) { |
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results.addAll(l); |
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} |
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} |
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} |
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return Collections.enumeration(results); |
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} |
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private static final long serialVersionUID = -7176153071733132400L; |
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// Need to maintain serialization interoperability with earlier releases, |
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// which had the serializable field: |
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// private Hashtable permissions; // keyed on type |
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/** |
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* @serialField permissions java.util.Hashtable |
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* A table of the UnresolvedPermissions keyed on type, value is Vector |
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* of permissions |
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*/ |
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private static final ObjectStreamField[] serialPersistentFields = { |
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new ObjectStreamField("permissions", Hashtable.class), |
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}; |
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/** |
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* @serialData Default field. |
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*/ |
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/* |
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* Writes the contents of the perms field out as a Hashtable |
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* in which the values are Vectors for |
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* serialization compatibility with earlier releases. |
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*/ |
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private void writeObject(ObjectOutputStream out) throws IOException { |
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// Don't call out.defaultWriteObject() |
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// Copy perms into a Hashtable |
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Hashtable<String, Vector<UnresolvedPermission>> permissions = |
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new Hashtable<>(perms.size()*2); |
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// Convert each entry (List) into a Vector |
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synchronized (this) { |
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Set<Map.Entry<String, List<UnresolvedPermission>>> set = perms.entrySet(); |
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for (Map.Entry<String, List<UnresolvedPermission>> e : set) { |
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// Convert list into Vector |
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List<UnresolvedPermission> list = e.getValue(); |
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Vector<UnresolvedPermission> vec = new Vector<>(list.size()); |
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synchronized (list) { |
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vec.addAll(list); |
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} |
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// Add to Hashtable being serialized |
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permissions.put(e.getKey(), vec); |
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} |
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} |
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// Write out serializable fields |
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ObjectOutputStream.PutField pfields = out.putFields(); |
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pfields.put("permissions", permissions); |
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out.writeFields(); |
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} |
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/* |
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* Reads in a Hashtable in which the values are Vectors of |
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* UnresolvedPermissions and saves them in the perms field. |
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*/ |
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private void readObject(ObjectInputStream in) throws IOException, |
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ClassNotFoundException { |
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// Don't call defaultReadObject() |
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// Read in serialized fields |
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ObjectInputStream.GetField gfields = in.readFields(); |
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// Get permissions |
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@SuppressWarnings("unchecked") |
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// writeObject writes a Hashtable<String, Vector<UnresolvedPermission>> |
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// for the permissions key, so this cast is safe, unless the data is corrupt. |
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Hashtable<String, Vector<UnresolvedPermission>> permissions = |
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(Hashtable<String, Vector<UnresolvedPermission>>) |
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gfields.get("permissions", null); |
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perms = new HashMap<String, List<UnresolvedPermission>>(permissions.size()*2); |
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// Convert each entry (Vector) into a List |
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Set<Map.Entry<String, Vector<UnresolvedPermission>>> set = permissions.entrySet(); |
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for (Map.Entry<String, Vector<UnresolvedPermission>> e : set) { |
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// Convert Vector into ArrayList |
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Vector<UnresolvedPermission> vec = e.getValue(); |
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List<UnresolvedPermission> list = new ArrayList<>(vec.size()); |
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list.addAll(vec); |
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// Add to Hashtable being serialized |
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perms.put(e.getKey(), list); |
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} |
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} |
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} |