[ http://issues.apache.org/jira/browse/HARMONY-73?page=all ] Tim Ellison closed HARMONY-73: ------------------------------
Verified by Svetlana > 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(); > } > } -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira