[ http://issues.apache.org/jira/browse/HARMONY-73?page=all ]
Tim Ellison resolved HARMONY-73:
--------------------------------
Resolution: Cannot Reproduce
Svetlana,
Please confirm that this problem no longer exists.
> java.net.InetAddress.getLocalHost() returns wrong host name for loopback
> address
> ---------------------------------------------------------------------------------
>
> Key: HARMONY-73
> URL: http://issues.apache.org/jira/browse/HARMONY-73
> Project: Harmony
> Type: Bug
> Components: Classlib
> Reporter: Svetlana Samoilenko
> Priority: Minor
> Attachments: InetAddress.patch
>
> J2se 1.4.2 and 5.0 specifications for java.net.InetAddress.getLocalHost()
> read, that if there is a security manager, its checkConnect method is called
> with the local host name and -1 as its arguments to see if the operation is
> allowed.
> If the operation is not allowed, an InetAddress representing the loopback
> address is returned as hostname/hostaddress (as followed from toString()
> specification).
> The test listed below shows that the returned loopback address has wrong
> hostname, "127.0.0.1" instead of "loopback".
> Inet_SecurityManager class is called twice and therefore host name is
> substituted with hostaddress address.
> Code to reproduce:
> import java.net.*;
> public class test2 {
> public static void main(String[] args) {
> try {
> System.setSecurityManager(new Inet_SecurityManager());
> System.out.println("Loopback address = " +
> InetAddress.getLocalHost());
> } catch (Exception e){
> System.out.println("Unexpected exception = " + e);
> };
> }
> }
> class Inet_SecurityManager extends SecurityManager {
> public void checkConnect(String host, int port) {
> super.checkConnect(host,port);
> throw new SecurityException();
> }
> }
> Steps to Reproduce:
> 1. Build Harmony (check-out on 2006-01-30) j2se subset as described in
> README.txt.
> 2. Compile test2.java using BEA 1.4 javac
> > javac -d . test2.java
> 3. Run java using compatible VM (J9)
> > java -showversion test2
> Output:
> C:\tmp>C:\jrockit-j2sdk1.4.2_04\bin\java.exe -showversion test2
> java version "1.4.2_04"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_04-b05)
> BEA WebLogic JRockit(TM) 1.4.2_04 JVM (build
> ari-31788-20040616-1132-win-ia32, Native Threads, GC strategy: parallel)
> Inet_SecurityManager :host= nswssamoil1
> Inet_SecurityManager :port= -1
> Loopback address = localhost/127.0.0.1
> C:\tmp>C:\harmony\trunk\deploy\jre\bin\java -showversion test2
> (c) Copyright 1991, 2005 The Apache Software Foundation or its licensors, as
> applicable.
> Inet_SecurityManager :host= nswssamoil1
> Inet_SecurityManager :port= -1
> Inet_SecurityManager :host= localhost
> Inet_SecurityManager :port= -1
> Loopback address = 127.0.0.1/127.0.0.1
> Suggested junit test case:
> ------------------------ InetAddressTest.java
> -------------------------------------------------
> import java.net.*;
> import junit.framework.*;
> public class InetAddressTest extends TestCase {
> public static void main(String[] args) {
> junit.textui.TestRunner.run(InetAddress.class);
> }
> public void test_getLocalHost() {
> try{
> System.setSecurityManager(new Inet_SecurityManager());
> String hostname=InetAddress.getLocalHost().getHostName();
>
> assertEquals("localhost", hostname);
> } catch (Exception e){
> fail("Unexpected exception = " + e);
> };
> }
> }
> class Inet_SecurityManager extends SecurityManager {
> public void checkConnect(String host, int port) {
> super.checkConnect(host,port);
> throw new SecurityException();
> }
> }
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