| /* |
| * Copyright (c) 2016, 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 8134577 |
| * @summary Test the internal NameService implementation which is enabled via |
| * the system property jdk.net.hosts.file. This property specifies |
| * a file name that contains address host mappings, similar to those in |
| * /etc/hosts file. |
| * @run main/othervm InternalNameServiceTest |
| */ |
| |
| import java.io.BufferedWriter; |
| import java.io.FileWriter; |
| import java.io.PrintWriter; |
| import java.net.InetAddress; |
| import java.net.UnknownHostException; |
| import java.util.Arrays; |
| |
| public class InternalNameServiceTest { |
| |
| public static void main(String args[]) throws Exception { |
| |
| String hostsFileName = System.getProperty("test.src", ".") + "/TestHosts"; |
| System.setProperty("jdk.net.hosts.file", hostsFileName); |
| System.setProperty("sun.net.inetaddr.ttl", "0"); |
| |
| testHostToIPAddressMappings(hostsFileName); |
| testIpAddressToHostNameMappings(hostsFileName); |
| } |
| |
| private static void testHostToIPAddressMappings(String hostsFileName) |
| throws Exception, UnknownHostException { |
| System.out.println(" TEST HOST TO IP ADDRESS MAPPINGS "); |
| InetAddress testAddress; |
| byte[] retrievedIpAddr; |
| byte[] expectedIpAddr1 = { 1, 2, 3, 4 }; |
| byte[] expectedIpAddr2 = { 5, 6, 7, 8 }; |
| byte[] expectedIpAddrIpv6_1 = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}; |
| |
| // hosts file with |
| // # test hosts file for internal NameService |
| // 1.2.3.4 host.sample-domain |
| // 5.6.7.8 host1.sample-domain |
| // 1.2.3.4 host2.sample-domain # this is a comment |
| // host3.sample-domain # no ip address |
| // host4.sample-domain # space as ip address |
| // host5.sample-domain # double space as ip address |
| |
| // add comment to hosts file |
| addMappingToHostsFile("test hosts file for internal NameService ", "#", hostsFileName, |
| false); |
| addMappingToHostsFile("host.sample-domain", "1.2.3.4", hostsFileName, |
| true); |
| |
| testAddress = InetAddress.getByName("host.sample-domain"); |
| retrievedIpAddr = testAddress.getAddress(); |
| if (!Arrays.equals(retrievedIpAddr, expectedIpAddr1)) { |
| throw new RuntimeException( |
| "retrievedIpAddr not equal to expectedipAddr"); |
| } |
| |
| addMappingToHostsFile("host1.sample-domain", "5.6.7.8", hostsFileName, |
| true); |
| addMappingToHostsFile("host2.sample-domain", "1.2.3.4", hostsFileName, |
| true); |
| |
| testAddress = InetAddress.getByName("host1.sample-domain"); |
| retrievedIpAddr = testAddress.getAddress(); |
| if (!Arrays.equals(retrievedIpAddr, expectedIpAddr2)) { |
| throw new RuntimeException( |
| "retrievedIpAddr not equal to expectedIpAddr"); |
| } |
| |
| testAddress = InetAddress.getByName("host2.sample-domain"); |
| retrievedIpAddr = testAddress.getAddress(); |
| if (!Arrays.equals(retrievedIpAddr, expectedIpAddr1)) { |
| throw new RuntimeException( |
| "retrievedIpAddr not equal to expectedIpAddr"); |
| } |
| |
| try { |
| addMappingToHostsFile("host3.sample-domain", "", hostsFileName, |
| true); |
| testAddress = InetAddress.getByName("host3.sample-domain"); |
| throw new RuntimeException( |
| "Expected UnknownHostException not thrown"); |
| } catch (UnknownHostException uhEx) { |
| System.out.println("UnknownHostException as expected for host host3.sample-domain"); |
| } |
| |
| try { |
| addMappingToHostsFile("host4.sample-domain", " ", hostsFileName, |
| true); |
| testAddress = InetAddress.getByName("host4.sample-domain"); |
| throw new RuntimeException( |
| "Expected UnknownHostException not thrown"); |
| } catch (UnknownHostException uhEx) { |
| System.out.println("UnknownHostException as expected for host host4.sample-domain"); |
| } |
| |
| try { |
| addMappingToHostsFile("host5.sample-domain", " ", hostsFileName, |
| true); |
| testAddress = InetAddress.getByName("host4.sample-domain"); |
| throw new RuntimeException( |
| "Expected UnknownHostException not thrown"); |
| } catch (UnknownHostException uhEx) { |
| System.out.println("UnknownHostException as expected for host host5.sample-domain"); |
| } |
| |
| // IPV6 tests |
| |
| // IPV6 tests |
| addMappingToHostsFile("host-ipv6.sample-domain", "::1", hostsFileName, |
| true); |
| testAddress = InetAddress.getByName("host-ipv6.sample-domain"); |
| retrievedIpAddr = testAddress.getAddress(); |
| if (!Arrays.equals(retrievedIpAddr, expectedIpAddrIpv6_1)) { |
| System.out.println("retrieved ipv6 addr == " + Arrays.toString(retrievedIpAddr)); |
| System.out.println("expected ipv6 addr == " + Arrays.toString(expectedIpAddrIpv6_1)); |
| throw new RuntimeException( |
| "retrieved IPV6 Addr not equal to expected IPV6 Addr"); |
| } |
| } |
| |
| private static void testIpAddressToHostNameMappings(String hostsFileName) |
| throws Exception { |
| System.out.println(" TEST IP ADDRESS TO HOST MAPPINGS "); |
| InetAddress testAddress; |
| String retrievedHost; |
| String expectedHost = "testHost.testDomain"; |
| |
| byte[] testHostIpAddr = { 10, 2, 3, 4 }; |
| byte[] testHostIpAddr2 = { 10, 5, 6, 7 }; |
| byte[] testHostIpAddr3 = { 10, 8, 9, 10 }; |
| byte[] testHostIpAddr4 = { 10, 8, 9, 11 }; |
| |
| // add comment to hosts file |
| addMappingToHostsFile("test hosts file for internal NameService ", "#", hostsFileName, |
| false); |
| addMappingToHostsFile("testHost.testDomain", "10.2.3.4", hostsFileName, |
| true); |
| |
| testAddress = InetAddress.getByAddress(testHostIpAddr); |
| System.out.println("******* testAddress == " + testAddress); |
| retrievedHost = testAddress.getHostName(); |
| if (!expectedHost.equals(retrievedHost)) { |
| throw new RuntimeException( |
| "retrieved host name not equal to expected host name"); |
| } |
| |
| addMappingToHostsFile("testHost.testDomain", "10.5.6.7", hostsFileName, |
| true); |
| |
| testAddress = InetAddress.getByAddress(testHostIpAddr2); |
| System.out.println("******* testAddress == " + testAddress); |
| retrievedHost = testAddress.getHostName(); |
| System.out.println("******* retrievedHost == " + retrievedHost); |
| if (!expectedHost.equals(retrievedHost)) { |
| throw new RuntimeException("retrieved host name " + retrievedHost |
| + " not equal to expected host name" + expectedHost); |
| } |
| |
| testAddress = InetAddress.getByAddress(testHostIpAddr4); |
| System.out.println("******* testAddress == " + testAddress); |
| if ("10.8.9.11".equalsIgnoreCase(testAddress.getCanonicalHostName())) { |
| System.out.println("addr = " + addrToString(testHostIpAddr4) |
| + " resolve to a host address as expected"); |
| } else { |
| System.out.println("addr = " + addrToString(testHostIpAddr4) |
| + " does not resolve as expected, testAddress == " + testAddress.getCanonicalHostName()); |
| throw new RuntimeException("problem with resolving " |
| + addrToString(testHostIpAddr4)); |
| } |
| |
| try { |
| addMappingToHostsFile("", "10.8.9.10", hostsFileName, true); |
| testAddress = InetAddress.getByAddress(testHostIpAddr3); |
| System.out.println("******* testAddress == " + testAddress); |
| retrievedHost = testAddress.getCanonicalHostName(); |
| } catch (Throwable t) { |
| throw new RuntimeException("problem with resolving " |
| + addrToString(testHostIpAddr3)); |
| } |
| |
| } |
| |
| private static String addrToString(byte addr[]) { |
| return Byte.toString(addr[0]) + "." + Byte.toString(addr[1]) + "." |
| + Byte.toString(addr[2]) + "." + Byte.toString(addr[3]); |
| } |
| |
| private static void addMappingToHostsFile( String host, |
| String addr, |
| String hostsFileName, |
| boolean append) |
| throws Exception { |
| String mapping = addr + " " + host; |
| try (PrintWriter hfPWriter = new PrintWriter(new BufferedWriter( |
| new FileWriter(hostsFileName, append)))) { |
| hfPWriter.println(mapping); |
| } |
| } |
| |
| } |