1 /* 2 * Copyright (c) 2002, 2018, 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 /* 25 * @test 26 * @bug 8208279 27 * @summary If DNS name resolution is configured normally for SWAN on the local 28 * machine, construct a context using the configured servers and verify 29 * that a PROVIDER_URL property is generated for the context. 30 * If DNS is not configured, or if JDK version is earlier than 1.4.1, 31 * then this test is a no-op (it passes without doing anything). 32 * @modules jdk.naming.dns/com.sun.jndi.dns 33 * java.base/sun.security.util 34 * @library ../lib/ 35 * @run main ProviderUrlGen 36 */ 37 38 import javax.naming.Context; 39 import javax.naming.directory.DirContext; 40 import javax.naming.directory.InitialDirContext; 41 import java.util.Hashtable; 42 43 public class ProviderUrlGen { 44 45 public static void main(String[] args) throws Exception { 46 Hashtable<Object, Object> env; 47 48 // initialize test 49 env = DNSTestUtils.initEnv(false, ProviderUrlGen.class.getName(), args); 50 51 env.remove(Context.PROVIDER_URL); 52 53 DirContext ctx = null; 54 55 try { 56 if (!isPlatformServersAvailable()) { 57 System.out.println( 58 "DNS not configured. There's nothing to test."); 59 return; 60 } 61 62 ctx = new InitialDirContext(env); 63 64 String providerUrl = (String) ctx.getEnvironment() 65 .get(Context.PROVIDER_URL); 66 67 if (providerUrl == null) { 68 throw new RuntimeException("Failed: PROVIDER_URL not set"); 69 } 70 71 DNSTestUtils.debug("PROVIDER_URL = \"" + providerUrl + "\""); 72 73 // We don't know exactly what providerUrl's value should be. 74 // Check that it is a space-separated list of one or more URLs 75 // of the form "dns://xxxxxx". 76 77 String[] urls = providerUrl.split(" "); 78 if (urls.length < 1) { 79 throw new RuntimeException("Failed: PROVIDER_URL is empty"); 80 } 81 82 for (String url : urls) { 83 DNSTestUtils.debug(url); 84 if (!checkUrl(url)) { 85 throw new RuntimeException( 86 "Failed: Unexpected DNS URL: " + url); 87 } 88 } 89 90 } finally { 91 DNSTestUtils.cleanup(ctx); 92 } 93 } 94 95 private static boolean checkUrl(String url) { 96 return url.startsWith("dns://") && url.length() >= 7; 97 } 98 99 private static boolean isPlatformServersAvailable() { 100 try { 101 java.lang.reflect.Method psa = com.sun.jndi.dns.DnsContextFactory.class 102 .getMethod("platformServersAvailable", null); 103 return (Boolean) psa.invoke(null, null); 104 } catch (Exception e) { 105 e.printStackTrace(); 106 return false; 107 } 108 } 109 }