/*
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*
* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
*
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* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
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* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
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* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
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package com.sun.enterprise.util;
import java.net.*;
import java.io.*;
import java.util.Properties;
import java.lang.reflect.*;
import javax.naming.*;
import javax.rmi.*;
import javax.rmi.CORBA.*;
import com.sun.enterprise.Switch;
import com.sun.enterprise.NamingManager;
import java.util.logging.*;
import com.sun.logging.*;
import com.sun.enterprise.iiop.security.GSSUtils;
/**
* Handy class full of static functions.
*/
public final class Utility {
static Logger _logger=LogDomains.getLogger(LogDomains.UTIL_LOGGER);
private static LocalStringManagerImpl localStrings =
new LocalStringManagerImpl(Utility.class);
private static byte[] mech;
static {
try {
mech = GSSUtils.getDER(GSSUtils.GSSUP_MECH_OID);
} catch(IOException io) {
mech = null;
}
}
/**
* Return the ASN.1 encoded representation of a GSS mechanism identifier.
* Currently only the GSSUP Mechanism is supported.
*/
public static byte[] getMechanism() {
return mech;
}
public static void checkJVMVersion()
{
// do not perform any JVM version checking
}
public static Properties getPropertiesFromFile(String file)
throws IOException
{
InputStream is = ClassLoader.getSystemResourceAsStream(file);
if (is != null) {
Properties config = new Properties();
config.load(is);
return config;
} else {
String remoteclient = "/" + file;
InputStream is2 = Utility.class.getResourceAsStream(remoteclient);
Properties config = new Properties();
config.load(is2);
return config;
}
}
/**
* Return the hostname of the local machine.
*/
public static String getLocalHost() {
String hostname = null;
try {
InetAddress ia = InetAddress.getLocalHost();
hostname = ia.getHostName();
} catch(UnknownHostException e) {
return "localhost";
}
return hostname;
}
/**
* Return the hostname of the local machine.
*/
public static String getLocalAddress() {
String address = null;
try {
InetAddress ia = InetAddress.getLocalHost();
address = ia.getHostAddress();
} catch(UnknownHostException e) {
return "127.0.0.1";
}
return address;
}
/**
* This is a convenience method to lookup a remote object by name within
* the naming context.
* @exception javax.naming.NamingException if the object with that
* name could not be found.
*/
public static java.rmi.Remote lookupObject(String publishedName,
java.lang.Class anInterface)
throws javax.naming.NamingException {
Context ic = new InitialContext();
java.lang.Object objRef = ic.lookup(publishedName);
return (java.rmi.Remote)
PortableRemoteObject.narrow(objRef, anInterface);
}
/** Unmarshal a byte array to an integer.
Assume the bytes are in BIGENDIAN order.
i.e. array[offset] is the most-significant-byte
and array[offset+3] is the least-significant-byte.
@param array The array of bytes.
@param offset The offset from which to start unmarshalling.
*/
public static int bytesToInt(byte[] array, int offset)
{
int b1, b2, b3, b4;
b1 = (array[offset++] << 24) & 0xFF000000;
b2 = (array[offset++] << 16) & 0x00FF0000;
b3 = (array[offset++] << 8) & 0x0000FF00;
b4 = (array[offset++] << 0) & 0x000000FF;
return (b1 | b2 | b3 | b4);
}
/** Marshal an integer to a byte array.
The bytes are in BIGENDIAN order.
i.e. array[offset] is the most-significant-byte
and array[offset+3] is the least-significant-byte.
@param array The array of bytes.
@param offset The offset from which to start marshalling.
*/
public static void intToBytes(int value, byte[] array, int offset)
{
array[offset++] = (byte)((value >>> 24) & 0xFF);
array[offset++] = (byte)((value >>> 16) & 0xFF);
array[offset++] = (byte)((value >>> 8) & 0xFF);
array[offset++] = (byte)((value >>> 0) & 0xFF);
}
/** Unmarshal a byte array to an long.
Assume the bytes are in BIGENDIAN order.
i.e. array[offset] is the most-significant-byte
and array[offset+7] is the least-significant-byte.
@param array The array of bytes.
@param offset The offset from which to start unmarshalling.
*/
public static long bytesToLong(byte[] array, int offset)
{
long l1, l2;
l1 = (long)bytesToInt(array, offset) << 32;
l2 = (long)bytesToInt(array, offset+4) & 0xFFFFFFFFL;
return (l1 | l2);
}
/** Marshal an long to a byte array.
The bytes are in BIGENDIAN order.
i.e. array[offset] is the most-significant-byte
and array[offset+7] is the least-significant-byte.
@param array The array of bytes.
@param offset The offset from which to start marshalling.
*/
public static void longToBytes(long value, byte[] array, int offset)
{
array[offset++] = (byte)((value >>> 56) & 0xFF);
array[offset++] = (byte)((value >>> 48) & 0xFF);
array[offset++] = (byte)((value >>> 40) & 0xFF);
array[offset++] = (byte)((value >>> 32) & 0xFF);
array[offset++] = (byte)((value >>> 24) & 0xFF);
array[offset++] = (byte)((value >>> 16) & 0xFF);
array[offset++] = (byte)((value >>> 8) & 0xFF);
array[offset++] = (byte)((value >>> 0) & 0xFF);
}
/**
* Verify and invoke main if present in the specified class.
*/
public static void invokeApplicationMain(Class mainClass, String[] args)
throws InvocationTargetException, IllegalAccessException,
ClassNotFoundException
{
String err = localStrings.getLocalString ("utility.no.main", "",
new Object[] {mainClass});
// determine the main method using reflection
// verify that it is public static void and takes
// String[] as the only argument
Method mainMethod = null;
try {
mainMethod = mainClass.getMethod("main",
new Class[] { String[].class } );
} catch(NoSuchMethodException msme) {
_logger.log(Level.SEVERE,"enterprise_util.excep_in_utility",msme);
throw new ClassNotFoundException(err);
}
// check modifiers: public static
int modifiers = mainMethod.getModifiers ();
if (!Modifier.isPublic (modifiers) ||
!Modifier.isStatic (modifiers)) {
err = localStrings.getLocalString(
"utility.main.notpublicorstatic",
"The main method is either not public or not static");
_logger.log(Level.SEVERE,"enterprise_util.excep_in_utility_main.notpublicorstatic");
throw new ClassNotFoundException(err);
}
// check return type and exceptions
if (!mainMethod.getReturnType().equals (Void.TYPE)) {
err = localStrings.getLocalString(
"utility.main.notvoid",
"The main method's return type is not void ");
_logger.log(Level.SEVERE,"enterprise_util.excep_in_utility_main.notvoid");
throw new ClassNotFoundException(err);
}
// build args to the main and call it
Object params [] = new Object [1];
params[0] = args;
mainMethod.invoke(null, params);
}
public static void invokeSetMethod(Object obj, String prop, String value)
throws NoSuchMethodException, InvocationTargetException,
IllegalAccessException
{
Class cl = obj.getClass();
// change first letter to uppercase
String setMeth = "set" + prop.substring(0,1).toUpperCase() +
prop.substring(1);
// try string method
try {
Class[] cldef = {String.class};
Method meth = cl.getMethod(setMeth, cldef);
Object[] params = {value};
meth.invoke(obj, params);
return;
} catch (NoSuchMethodException ex) {
try {
// try int method
Class[] cldef = {Integer.TYPE};
Method meth = cl.getMethod(setMeth, cldef);
Object[] params = {Integer.valueOf(value)};
meth.invoke(obj, params);
return;
} catch(NoSuchMethodException nsmex) {
// try boolean method
Class[] cldef = {Boolean.TYPE};
Method meth = cl.getMethod(setMeth, cldef);
Object[] params = {Boolean.valueOf(value)};
meth.invoke(obj, params);
return;
}
}
}
public static void invokeSetMethodCaseInsensitive(Object obj, String prop, String value)
throws NoSuchMethodException, InvocationTargetException,
IllegalAccessException
{
String alternateMethodName = null;
Class cl = obj.getClass();
String setMeth = "set" + prop;
Method[] methodsList = cl.getMethods();
boolean methodFound = false;
int i=0;
for (i =0; i<methodsList.length; ++i)
{
if(methodsList[i].getName().equalsIgnoreCase(setMeth) == true)
{
Class[] parameterTypes = methodsList[i].getParameterTypes();
if(parameterTypes.length == 1 )
{
if(parameterTypes[0].getName().equals("java.lang.String"))
{
methodFound = true;
break;
}
else
alternateMethodName = methodsList[i].getName();
}
}
}
if(methodFound == true)
{
Object[] params = {value};
methodsList[i].invoke(obj, params);
return;
}
if(alternateMethodName != null)
{
try
{
// try int method
Class[] cldef = {Integer.TYPE};
Method meth = cl.getMethod(alternateMethodName, cldef);
Object[] params = {Integer.valueOf(value)};
meth.invoke(obj, params);
return;
}
catch(NoSuchMethodException nsmex)
{
// try boolean method
Class[] cldef = {Boolean.TYPE};
Method meth = cl.getMethod(alternateMethodName, cldef);
Object[] params = {Boolean.valueOf(value)};
meth.invoke(obj, params);
return;
}
}
else
throw new NoSuchMethodException(setMeth);
}
// Ports are marshalled as shorts on the wire. The IDL
// type is unsigned short, which lacks a convenient representation
// in Java in the 32768-65536 range. So, we treat ports as
// ints throught this code, except that marshalling requires a
// scaling conversion. intToShort and shortToInt are provided
// for this purpose.
public static short intToShort(int value)
{
if (value > 32767)
return (short)(value - 65536) ;
return (short)value ;
}
public static int shortToInt(short value)
{
if (value < 0)
return value + 65536 ;
return value ;
}
/**
* Get the current thread's context class loader which is set to
* the CommonClassLoader by ApplicationServer
* @return the thread's context classloader if it exists;
* else the system class loader.
*/
public static ClassLoader getClassLoader() {
if (Thread.currentThread().getContextClassLoader() != null) {
return Thread.currentThread().getContextClassLoader();
} else {
return ClassLoader.getSystemClassLoader();
}
}
/**
* Loads the class with the common class loader.
* @param the class name
* @return the loaded class
* @exception if the class is not found.
* @see getClassLoader()
*/
public static Class loadClass(String className) throws ClassNotFoundException {
return getClassLoader().loadClass(className);
}
/**
* Utility routine for setting the context class loader.
* Returns previous class loader.
*/
public static ClassLoader setContextClassLoader(ClassLoader newClassLoader) {
// Can only reference final local variables from dopriveleged block
final ClassLoader classLoaderToSet = newClassLoader;
final Thread currentThread = Thread.currentThread();
ClassLoader originalClassLoader = currentThread.getContextClassLoader();
if (classLoaderToSet != originalClassLoader) {
if (System.getSecurityManager() == null) {
currentThread.setContextClassLoader(classLoaderToSet);
} else {
java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction() {
public java.lang.Object run() {
currentThread.setContextClassLoader(classLoaderToSet);
return null;
}
}
);
}
}
return originalClassLoader;
}
public static void setEnvironment() {
Environment.obtain().activateEnvironment();
}
}
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