/* 
 * Copyright 1998-1999 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
  */

/* @test
 * @bug 4115683
 * @summary Endpoint hostnames should always be fully qualified or
 *          should be an ip address.  When references to remote
 *          objects are passed outside of the local domain their
 *          endpoints may contain hostnames that are not fully
 *          qualified.  Hence remote clients won't be able to contact
 *          the referenced remote obect.
 *
 * @author Laird Dornin
 *
 * @library ../../testlibrary
 * @build CheckFQDN CheckFQDNClient CheckFQDN_Stub TellServerName
 * @run main/othervm/timeout=120 CheckFQDN 
 */

/** 
 * Get the hostname used by rmi using different rmi properities:
 *
 * if set java.rmi.server.hostname, hostname should equal this
 * property.
 * 
 * if set java.rmi.server.useLocalHostname, hostname must contain a '.'
 *
 * if set no properties hostname should be an ipaddress.
 *
 * if set java.rmi.server.hostname, hostname should equal this
 * property even if set java.rmi.server.useLocalHostname is true.
 *
 */

import java.rmi.*;
import java.rmi.registry.*;
import java.rmi.server.*;
import java.io.*;

/**
 * Export a remote object through which the exec'ed client vm can 
 * inform the main test what its host name is.
 */
public class CheckFQDN extends UnicastRemoteObject 
    implements TellServerName {
    
    static String propertyBeingTested = null;
    static String propertyBeingTestedValue = null;

    public static void main(String args[]) {

	Object dummy = new Object();
	CheckFQDN checkFQDN = null;
	try {
	    checkFQDN = new CheckFQDN();

	    System.err.println
		("\nRegression test for bug/rfe 4115683\n");
	    
	    Registry registry = java.rmi.registry.LocateRegistry.
		createRegistry(TestLibrary.REGISTRY_PORT);
	    registry.bind("CheckFQDN", checkFQDN);
	    
	    /* test the host name scheme in different environments.*/
	    testProperty("java.rmi.server.useLocalHostname", "true", "");
	    testProperty("java.rmi.server.hostname", "thisIsJustAnRMITest", "");
	    testProperty("java.rmi.server.hostname", "thisIsJustAnRMITest",
			 " -Djava.rmi.server.useLocalHostname=true ");
	    testProperty("", "", "");

	} catch (Exception e) {
	    TestLibrary.bomb(e);
	} finally {
	    if (checkFQDN != null) {
		TestLibrary.unexport(checkFQDN);
	    }
	}
	System.err.println("\nTest for bug/ref 4115683 passed.\n");
    }

    /** 
     * Spawn a vm and feed it a property which sets the client's rmi
     * hostname.
     */
    public static void testProperty(String property, 
				    String propertyValue, 
				    String extraProp) 
    {
	try {
  	    String propOption = "";
	    String equal = "";
	    if (!property.equals("")) {
		propOption = " -D";
		equal = "=";
	    }

	    JavaVM jvm = new JavaVM("CheckFQDNClient", 
				    propOption + property + 
				    equal + 
				    propertyValue + extraProp, 
				    "");
	    
	    propertyBeingTested=property;
	    propertyBeingTestedValue=propertyValue;

	    // create a client to tell checkFQDN what its rmi name is. */
	    jvm.start();

	    if (jvm.getVM().waitFor() != 0 ) {
		TestLibrary.bomb("Test failed, error in client.");
	    }
	    
	} catch (Exception e) {
	    TestLibrary.bomb(e);
	}
    }

    CheckFQDN() throws RemoteException { }

    /** 
     * Remote method to allow client vm to tell the main test what its 
     * host name is .
     */
    public void tellServerName(String serverName) 
	throws RemoteException {

	if (propertyBeingTested.equals("java.rmi.server.hostname")) {
	    if ( !propertyBeingTestedValue.equals(serverName)) {
		TestLibrary.bomb(propertyBeingTested +
		     ":\n Client rmi server name does " +
		     "not equal the one specified " +
		     "by java.rmi.server.hostname: " +
		     serverName +" != " + 
		     propertyBeingTestedValue);
	    }

	    /** use local host name, must contain a '.' */
	} else if (propertyBeingTested.equals
		   ("java.rmi.server.useLocalHostname")) {
	    if (serverName.indexOf('.') < 0) {
		TestLibrary.bomb(propertyBeingTested +
		     ":\nThe client servername contains no '.'");
	    }
	} else {
	    // no propety set, must be ip address
	    if ((serverName.indexOf('.') < 0) || 
		(!Character.isDigit(serverName.charAt(0)))) {
		TestLibrary.bomb("Default name scheme:\n"+
		     " The client servername contains no '.'"+
		     "or is not an ip address");
	    }
	}
	System.err.println("Servername used: " + serverName);
    }
}