| /* |
| * Copyright (c) 2013, 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. |
| * |
| * 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 8009875 |
| * @summary Provide a default udp_preference_limit for krb5.conf |
| * @modules java.security.jgss/sun.security.krb5:+open |
| * @run main/othervm DefUdpLimit -1 1465 |
| * @run main/othervm DefUdpLimit 0 0 |
| * @run main/othervm DefUdpLimit 1234 1234 |
| * @run main/othervm DefUdpLimit 12345 12345 |
| * @run main/othervm DefUdpLimit 123456 32700 |
| * |
| */ |
| |
| import sun.security.krb5.KdcComm; |
| |
| import java.lang.reflect.Field; |
| import java.nio.file.Files; |
| import java.nio.file.Paths; |
| |
| public class DefUdpLimit { |
| |
| public static void main(String[] args) throws Exception { |
| int set = Integer.valueOf(args[0]); |
| int expected = Integer.valueOf(args[1]); |
| Field f = KdcComm.class.getDeclaredField("defaultUdpPrefLimit"); |
| f.setAccessible(true); |
| writeConf(set); |
| int actual = (Integer)f.get(null); |
| if (actual != expected) { |
| throw new Exception("Expected: " + expected + ", get " + actual); |
| } |
| } |
| |
| static void writeConf(int i) throws Exception { |
| String file = "krb5.conf." + i; |
| String content = "[libdefaults]\n"; |
| if (i >= 0) { |
| content += "udp_preference_limit = " + i; |
| } |
| Files.write(Paths.get(file), content.getBytes()); |
| System.setProperty("java.security.krb5.conf", file); |
| } |
| } |
| |