8187443: Forest Consolidation: Move files to unified layout

Reviewed-by: darcy, ihse

src/java.security.jgss/share/classes/javax/security/auth/kerberos/DelegationPermission.java

@@ -0,0 +1,339 @@
+/*
+ * Copyright (c) 2000, 2015, 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.security.auth.kerberos;
+
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.io.ObjectStreamField;
+import java.security.BasicPermission;
+import java.security.Permission;
+import java.security.PermissionCollection;
+import java.util.*;
+import java.util.concurrent.ConcurrentHashMap;
+
+/**
+ * This class is used to restrict the usage of the Kerberos
+ * delegation model, ie: forwardable and proxiable tickets.
+ * <p>
+ * The target name of this {@code Permission} specifies a pair of
+ * kerberos service principals. The first is the subordinate service principal
+ * being entrusted to use the TGT. The second service principal designates
+ * the target service the subordinate service principal is to
+ * interact with on behalf of the initiating KerberosPrincipal. This
+ * latter service principal is specified to restrict the use of a
+ * proxiable ticket.
+ * <p>
+ * For example, to specify the "host" service use of a forwardable TGT the
+ * target permission is specified as follows:
+ *
+ * <pre>
+ *  DelegationPermission("\"host/foo.example.com@EXAMPLE.COM\" \"krbtgt/EXAMPLE.COM@EXAMPLE.COM\"");
+ * </pre>
+ * <p>
+ * To give the "backup" service a proxiable nfs service ticket the target permission
+ * might be specified:
+ *
+ * <pre>
+ *  DelegationPermission("\"backup/bar.example.com@EXAMPLE.COM\" \"nfs/home.EXAMPLE.COM@EXAMPLE.COM\"");
+ * </pre>
+ *
+ * @since 1.4
+ */
+
+public final class DelegationPermission extends BasicPermission
+    implements java.io.Serializable {
+
+    private static final long serialVersionUID = 883133252142523922L;
+
+    private transient String subordinate, service;
+
+    /**
+     * Create a new {@code DelegationPermission}
+     * with the specified subordinate and target principals.
+     *
+     * @param principals the name of the subordinate and target principals
+     *
+     * @throws NullPointerException if {@code principals} is {@code null}.
+     * @throws IllegalArgumentException if {@code principals} is empty.
+     */
+    public DelegationPermission(String principals) {
+        super(principals);
+        init(principals);
+    }
+
+    /**
+     * Create a new {@code DelegationPermission}
+     * with the specified subordinate and target principals.
+     *
+     * @param principals the name of the subordinate and target principals
+     *
+     * @param actions should be null.
+     *
+     * @throws NullPointerException if {@code principals} is {@code null}.
+     * @throws IllegalArgumentException if {@code principals} is empty.
+     */
+    public DelegationPermission(String principals, String actions) {
+        super(principals, actions);
+        init(principals);
+    }
+
+
+    /**
+     * Initialize the DelegationPermission object.
+     */
+    private void init(String target) {
+
+        StringTokenizer t = null;
+        if (!target.startsWith("\"")) {
+            throw new IllegalArgumentException
+                ("service principal [" + target +
+                 "] syntax invalid: " +
+                 "improperly quoted");
+        } else {
+            t = new StringTokenizer(target, "\"", false);
+            subordinate = t.nextToken();
+            if (t.countTokens() == 2) {
+                t.nextToken();  // bypass whitespace
+                service = t.nextToken();
+            } else if (t.countTokens() > 0) {
+                throw new IllegalArgumentException
+                    ("service principal [" + t.nextToken() +
+                     "] syntax invalid: " +
+                     "improperly quoted");
+            }
+        }
+    }
+
+    /**
+     * Checks if this Kerberos delegation permission object "implies" the
+     * specified permission.
+     * <P>
+     * This method returns true if this {@code DelegationPermission}
+     * is equal to {@code p}, and returns false otherwise.
+     *
+     * @param p the permission to check against.
+     *
+     * @return true if the specified permission is implied by this object,
+     * false if not.
+     */
+    @Override
+    public boolean implies(Permission p) {
+        return equals(p);
+    }
+
+    /**
+     * Checks two DelegationPermission objects for equality.
+     *
+     * @param obj the object to test for equality with this object.
+     *
+     * @return true if {@code obj} is a DelegationPermission, and
+     *  has the same subordinate and service principal as this
+     *  DelegationPermission object.
+     */
+    @Override
+    public boolean equals(Object obj) {
+        if (obj == this) {
+            return true;
+        }
+
+        if (!(obj instanceof DelegationPermission)) {
+            return false;
+        }
+
+        DelegationPermission that = (DelegationPermission) obj;
+
+        return this.subordinate.equals(that.subordinate) &&
+                this.service.equals(that.service);
+    }
+
+    /**
+     * Returns the hash code value for this object.
+     *
+     * @return a hash code value for this object.
+     */
+    @Override
+    public int hashCode() {
+        return 17 * subordinate.hashCode() + 31 * service.hashCode();
+    }
+
+    /**
+     * Returns a PermissionCollection object for storing
+     * DelegationPermission objects.
+     * <br>
+     * DelegationPermission objects must be stored in a manner that
+     * allows them to be inserted into the collection in any order, but
+     * that also enables the PermissionCollection implies method to
+     * be implemented in an efficient (and consistent) manner.
+     *
+     * @return a new PermissionCollection object suitable for storing
+     * DelegationPermissions.
+     */
+    @Override
+    public PermissionCollection newPermissionCollection() {
+        return new KrbDelegationPermissionCollection();
+    }
+
+    /**
+     * WriteObject is called to save the state of the DelegationPermission
+     * to a stream. The actions are serialized, and the superclass
+     * takes care of the name.
+     */
+    private synchronized void writeObject(java.io.ObjectOutputStream s)
+        throws IOException
+    {
+        s.defaultWriteObject();
+    }
+
+    /**
+     * readObject is called to restore the state of the
+     * DelegationPermission from a stream.
+     */
+    private synchronized void readObject(java.io.ObjectInputStream s)
+         throws IOException, ClassNotFoundException
+    {
+        // Read in the action, then initialize the rest
+        s.defaultReadObject();
+        init(getName());
+    }
+
+}
+
+
+final class KrbDelegationPermissionCollection extends PermissionCollection
+    implements java.io.Serializable {
+
+    // Not serialized; see serialization section at end of class.
+    private transient ConcurrentHashMap<Permission, Boolean> perms;
+
+    public KrbDelegationPermissionCollection() {
+        perms = new ConcurrentHashMap<>();
+    }
+
+    /**
+     * Check and see if this collection of permissions implies the permissions
+     * expressed in "permission".
+     *
+     * @param permission the Permission object to compare
+     *
+     * @return true if "permission" is a proper subset of a permission in
+     * the collection, false if not.
+     */
+    @Override
+    public boolean implies(Permission permission) {
+        if (! (permission instanceof DelegationPermission))
+            return false;
+
+        // if map contains key, then it automatically implies it
+        return perms.containsKey(permission);
+    }
+
+    /**
+     * Adds a permission to the DelegationPermissions. The key for
+     * the hash is the name.
+     *
+     * @param permission the Permission object to add.
+     *
+     * @exception IllegalArgumentException - if the permission is not a
+     *                                       DelegationPermission
+     *
+     * @exception SecurityException - if this PermissionCollection object
+     *                                has been marked readonly
+     */
+    @Override
+    public void add(Permission permission) {
+        if (! (permission instanceof DelegationPermission))
+            throw new IllegalArgumentException("invalid permission: "+
+                                               permission);
+        if (isReadOnly())
+            throw new SecurityException("attempt to add a Permission to a readonly PermissionCollection");
+
+        perms.put(permission, Boolean.TRUE);
+    }
+
+    /**
+     * Returns an enumeration of all the DelegationPermission objects
+     * in the container.
+     *
+     * @return an enumeration of all the DelegationPermission objects.
+     */
+    @Override
+    public Enumeration<Permission> elements() {
+        return perms.keys();
+    }
+
+    private static final long serialVersionUID = -3383936936589966948L;
+
+    // Need to maintain serialization interoperability with earlier releases,
+    // which had the serializable field:
+    //    private Vector permissions;
+    /**
+     * @serialField permissions java.util.Vector
+     *     A list of DelegationPermission objects.
+     */
+    private static final ObjectStreamField[] serialPersistentFields = {
+        new ObjectStreamField("permissions", Vector.class),
+    };
+
+    /**
+     * @serialData "permissions" field (a Vector containing the DelegationPermissions).
+     */
+    /*
+     * Writes the contents of the perms field out as a Vector for
+     * serialization compatibility with earlier releases.
+     */
+    private void writeObject(ObjectOutputStream out) throws IOException {
+        // Don't call out.defaultWriteObject()
+
+        // Write out Vector
+        Vector<Permission> permissions = new Vector<>(perms.keySet());
+
+        ObjectOutputStream.PutField pfields = out.putFields();
+        pfields.put("permissions", permissions);
+        out.writeFields();
+    }
+
+    /*
+     * Reads in a Vector of DelegationPermissions and saves them in the perms field.
+     */
+    @SuppressWarnings("unchecked")
+    private void readObject(ObjectInputStream in)
+        throws IOException, ClassNotFoundException
+    {
+        // Don't call defaultReadObject()
+
+        // Read in serialized fields
+        ObjectInputStream.GetField gfields = in.readFields();
+
+        // Get the one we want
+        Vector<Permission> permissions =
+            (Vector<Permission>)gfields.get("permissions", null);
+        perms = new ConcurrentHashMap<>(permissions.size());
+        for (Permission perm : permissions) {
+            perms.put(perm, Boolean.TRUE);
+        }
+    }
+}