/*

 * Copyright 2000 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.

 *

 * 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.

 */

import java.security.*;

import java.util.PropertyPermission;

import java.net.SocketPermission;

import java.lang.*;

public class DynamicPolicy extends Policy{

    static int refresher = 0;

    public DynamicPolicy() {

    }

    public PermissionCollection getPermissions(CodeSource cs) {

        Permissions perms = new Permissions();

        initStaticPolicy(perms);

        // Defalut policy in the beginning...

        // toggle from refresh to refresh

        if (refresher == 1)

            perms.add(new PropertyPermission("user.name","read"));

        System.err.println("perms=[" + perms + "]");

        return perms;

    }

    public boolean implies(ProtectionDomain pd, Permission p) {

        return getPermissions(pd).implies(p);

    }

    public PermissionCollection getPermissions(ProtectionDomain pd) {

        Permissions perms = new Permissions();

        initStaticPolicy(perms);

        // Defalut policy in the beginning...

        // toggle from refresh to refresh

        if (refresher == 1)

            perms.add(new PropertyPermission("user.name","read"));

        return perms;

    }

    public void refresh() {

        refresher++;

    }

    private void initStaticPolicy(PermissionCollection perms) {

        perms.add(new java.security.SecurityPermission("getPolicy"));

        perms.add(new java.security.SecurityPermission("setPolicy"));

        perms.add(new java.lang.RuntimePermission("stopThread"));

        perms.add(new java.net.SocketPermission("localhost:1024-", "listen"));

        perms.add(new PropertyPermission("java.version","read"));

        perms.add(new PropertyPermission("java.vendor","read"));

        perms.add(new PropertyPermission("java.vendor.url","read"));

        perms.add(new PropertyPermission("java.class.version","read"));

        perms.add(new PropertyPermission("os.name","read"));

        perms.add(new PropertyPermission("os.version","read"));

        perms.add(new PropertyPermission("os.arch","read"));

        perms.add(new PropertyPermission("file.separator","read"));

        perms.add(new PropertyPermission("path.separator","read"));

        perms.add(new PropertyPermission("line.separator","read"));

        perms.add(new PropertyPermission("java.specification.version", "read"));

        perms.add(new PropertyPermission("java.specification.vendor", "read"));

        perms.add(new PropertyPermission("java.specification.name", "read"));

        perms.add(new PropertyPermission("java.vm.specification.version", "read"));

        perms.add(new PropertyPermission("java.vm.specification.vendor", "read"));

        perms.add(new PropertyPermission("java.vm.specification.name", "read"));

        perms.add(new PropertyPermission("java.vm.version", "read"));

        perms.add(new PropertyPermission("java.vm.vendor", "read"));

        perms.add(new PropertyPermission("java.vm.name", "read"));

        return;

    }

}