1 /* 2 * Copyright (c) 2008, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 /* 24 * @test 25 * @bug 6673164 6552334 8077102 26 * @run main/othervm DnsFallback 27 * @summary fix dns_fallback parse error, and use dns by default 28 */ 29 30 import java.io.*; 31 import java.lang.reflect.Method; 32 import sun.security.krb5.Config; 33 34 public class DnsFallback { 35 36 static Method useDNS_Realm; 37 static Method useDNS_KDC; 38 39 public static void main(String[] args) throws Exception { 40 41 useDNS_Realm = Config.class.getDeclaredMethod("useDNS_Realm"); 42 useDNS_Realm.setAccessible(true); 43 useDNS_KDC = Config.class.getDeclaredMethod("useDNS_KDC"); 44 useDNS_KDC.setAccessible(true); 45 46 47 // for 6673164 48 check("true", "true", true, true); 49 check("false", "true", false, false); 50 check("true", "false", true, true); 51 check("false", "false", false, false); 52 check("true", null, true, true); 53 check("false", null, false, false); 54 check(null, "true", true, true); 55 check(null, "false", false, false); 56 57 // for 6552334, no longer true 58 //check(null, null, true, true); 59 60 // 8077102 61 check(null, null, false, true); 62 } 63 64 /** 65 * Sets and checks. 66 * 67 * @param u dns_lookup_XXX value set, none if null 68 * @param f dns_fallback value set, none if null 69 * @param r expected useDNS_Realm 70 * @param k expected useDNS_KDC 71 */ 72 static void check(String u, String f, boolean r, boolean k) 73 throws Exception { 74 75 try (PrintStream ps = 76 new PrintStream(new FileOutputStream("dnsfallback.conf"))) { 77 ps.println("[libdefaults]\n"); 78 if (u != null) { 79 ps.println("dns_lookup_realm=" + u); 80 ps.println("dns_lookup_kdc=" + u); 81 } 82 if (f != null) { 83 ps.println("dns_fallback=" + f); 84 } 85 } 86 87 System.setProperty("java.security.krb5.conf", "dnsfallback.conf"); 88 Config.refresh(); 89 System.out.println("Testing " + u + ", " + f + ", " + r + ", " + k); 90 91 if (!useDNS_Realm.invoke(Config.getInstance()).equals(r)) { 92 throw new Exception("useDNS_Realm Fail"); 93 } 94 95 if (!useDNS_KDC.invoke(Config.getInstance()).equals(k)) { 96 throw new Exception("useDNS_KDC Fail"); 97 } 98 } 99 } 100