package com.adito.agent.client.util;
import java.io.BufferedReader;
import java.io.File;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.text.MessageFormat;
import java.util.Vector;
/**
* BrowserLauncher is a class that provides one static method, openURL, which
* opens the default web browser for the current user of the system to the given
* URL. It may support other protocols depending on the system -- mailto, ftp,
* etc. -- but that has not been rigorously tested and is not guaranteed to
* work.
* <p>
* Yes, this is platform-specific code, and yes, it may rely on classes on
* certain platforms that are not part of the standard JDK. What we're trying to
* do, though, is to take something that's frequently desirable but inherently
* platform-specific -- opening a default browser -- and allow programmers (you,
* for example) to do so without worrying about dropping into native code or
* doing anything else similarly evil.
* <p>
* Anyway, this code is completely in Java and will run on all JDK 1.1-compliant
* systems without modification or a need for additional libraries. All classes
* that are required on certain platforms to allow this to run are dynamically
* loaded at runtime via reflection and, if not found, will not cause this to do
* anything other than returning an error when opening the browser.
* <p>
* There are certain system requirements for this class, as it's running through
* Runtime.exec(), which is Java's way of making a native system call.
* Currently, this requires that a Macintosh have a Finder which supports the
* GURL event, which is true for Mac OS 8.0 and 8.1 systems that have the
* Internet Scripting AppleScript dictionary installed in the Scripting
* Additions folder in the Extensions folder (which is installed by default as
* far as I know under Mac OS 8.0 and 8.1), and for all Mac OS 8.5 and later
* systems. On Windows, it only runs under Win32 systems (Windows 95, 98, and NT
* 4.0, as well as later versions of all). On other systems, this drops back
* from the inherently platform-sensitive concept of a default browser and
* simply attempts to launch Netscape via a shell command.
* <p>
* This code is Copyright 1999-2002 by Eric Albert (ejalbert@cs.stanford.edu)
* and may be redistributed or modified in any form without restrictions as long
* as the portion of this comment from this paragraph through the end of the
* comment is not removed. The author requests that he be notified of any
* application, applet, or other binary that makes use of this code, but that's
* more out of curiosity than anything and is not required. This software
* includes no warranty. The author is not repsonsible for any loss of data or
* functionality or any adverse or unexpected effects of using this software.
* <p>
* Credits: <br>
* Steven Spencer, JavaWorld magazine ( <a
* href="http://www.javaworld.com/javaworld/javatips/jw-javatip66.html">Java Tip
* 66 </a>) <br>
* Thanks also to Ron B. Yeh, Eric Shapiro, Ben Engber, Paul Teitlebaum, Andrea
* Cantatore, Larry Barowski, Trevor Bedzek, Frank Miedrich, Ron Rabakukk, and
* Glenn Vanderburg
*
* @author Eric Albert ( <a
* href="mailto:ejalbert@cs.stanford.edu">ejalbert@cs.stanford.edu </a>)
*
* <p>
* Additional
* <p>
* <p>
* Changes made by Brett Smith ( <a href="mailto:brett@localhost">brett@localhost.
* </a> to allow a command to be specified that will always be used. Copyright
* 2004 3SP <a href="http://localhost">3SP </a>.
*/
public class BrowserLauncher {
/**
* The Java virtual machine that we are running on. Actually, in most cases we
* only care about the operating system, but some operating systems require us
* to switch on the VM.
*/
private static int jvm;
/** The browser for the system */
private static Object browser;
/** Browser command to always use */
private static String browserCommand;
/**
* Caches whether any classes, methods, and fields that are not part of the
* JDK and need to be dynamically loaded at runtime loaded successfully.
* <p>
* Note that if this is <code>false</code>,<code>openURL()</code> will
* always return an IOException.
*/
private static boolean loadedWithoutErrors;
/** The com.apple.mrj.MRJFileUtils class */
private static Class mrjFileUtilsClass;
/** The com.apple.mrj.MRJOSType class */
private static Class mrjOSTypeClass;
/** The com.apple.MacOS.AEDesc class */
private static Class aeDescClass;
/** The <init>(int) method of com.apple.MacOS.AETarget */
private static Constructor aeTargetConstructor;
/** The <init>(int, int, int) method of com.apple.MacOS.AppleEvent */
private static Constructor appleEventConstructor;
/** The <init>(String) method of com.apple.MacOS.AEDesc */
private static Constructor aeDescConstructor;
/** The findFolder method of com.apple.mrj.MRJFileUtils */
private static Method findFolder;
/** The getFileCreator method of com.apple.mrj.MRJFileUtils */
private static Method getFileCreator;
/** The getFileType method of com.apple.mrj.MRJFileUtils */
private static Method getFileType;
/** The openURL method of com.apple.mrj.MRJFileUtils */
private static Method openURL;
/** The makeOSType method of com.apple.MacOS.OSUtils */
private static Method makeOSType;
/** The putParameter method of com.apple.MacOS.AppleEvent */
private static Method putParameter;
/** The sendNoReply method of com.apple.MacOS.AppleEvent */
private static Method sendNoReply;
/** Actually an MRJOSType pointing to the System Folder on a Macintosh */
private static Object kSystemFolderType;
/** The keyDirectObject AppleEvent parameter type */
private static Integer keyDirectObject;
/** The kAutoGenerateReturnID AppleEvent code */
private static Integer kAutoGenerateReturnID;
/** The kAnyTransactionID AppleEvent code */
private static Integer kAnyTransactionID;
/** The linkage object required for JDirect 3 on Mac OS X */
private static Object linkage;
/** The framework to reference on Mac OS X 10.0.x */
private static final String JDirect_MacOSX = "/System/Library/Frameworks/Carbon.framework/Frameworks/HIToolbox.framework/HIToolbox"; //$NON-NLS-1$
/** JVM constant for MRJ 2.0 */
private static final int MRJ_2_0 = 0;
/** JVM constant for MRJ 2.1.x and 2.2.x */
private static final int MRJ_2_1 = 1;
/** JVM constant for Java on Mac OS X 10.0 (MRJ 3.0) */
private static final int MRJ_3_0 = 3;
/** JVM constant for Java 1.3.x on Mac OS X 10.1 and later (MRJ 3.1 and 3.2) */
private static final int MRJ_3_1 = 4;
/** JVM constant for Java 1.4.x and later on Mac OS X */
private static final int MRJ_COCOA = 5;
/** JVM constant for any Windows NT JVM */
private static final int WINDOWS_NT = 6;
/** JVM constant for any Windows 9x JVM */
private static final int WINDOWS_9x = 7;
/** JVM constant for any other platform */
private static final int OTHER = -1;
/**
* The file type of the Finder on a Macintosh. Hardcoding "Finder" would keep
* non-U.S. English systems from working properly.
*/
private static final String FINDER_TYPE = "FNDR"; //$NON-NLS-1$
/**
* The creator code of the Finder on a Macintosh, which is needed to send
* AppleEvents to the application.
*/
private static final String FINDER_CREATOR = "MACS"; //$NON-NLS-1$
/** The name for the AppleEvent type corresponding to a GetURL event. */
private static final String GURL_EVENT = "GURL"; //$NON-NLS-1$
/**
* The first parameter that needs to be passed into Runtime.exec() to open the
* default web browser on Windows.
*/
private static final String FIRST_WINDOWS_PARAMETER = "/c"; //$NON-NLS-1$
/** The second parameter for Runtime.exec() on Windows. */
private static final String SECOND_WINDOWS_PARAMETER = "start"; //$NON-NLS-1$
/**
* The third parameter for Runtime.exec() on Windows. This is a "title"
* parameter that the command line expects. Setting this parameter allows URLs
* containing spaces to work.
*/
private static final String THIRD_WINDOWS_PARAMETER = "\"\""; //$NON-NLS-1$
/**
* The shell parameters for Netscape that opens a given URL in an already-open
* copy of Netscape on many command-line systems.
*/
private static final String NETSCAPE_REMOTE_PARAMETER = "-remote"; //$NON-NLS-1$
private static final String NETSCAPE_OPEN_PARAMETER_START = "'openURL("; //$NON-NLS-1$
private static final String NETSCAPE_OPEN_PARAMETER_END = ")'"; //$NON-NLS-1$
/**
* The message from any exception thrown throughout the initialization
* process.
*/
private static String errorMessage;
/**
* An initialization block that determines the operating system and loads the
* necessary runtime data.
*/
static {
loadedWithoutErrors = true;
String osName = System.getProperty("os.name"); //$NON-NLS-1$
if (osName.startsWith("Mac OS")) { //$NON-NLS-1$
String javaVersion = System.getProperty("java.version"); //$NON-NLS-1$
String majorJavaVersion = javaVersion.substring(0, 3);
try {
double version = Double.valueOf(majorJavaVersion).doubleValue();
if (version >= 1.4) {
jvm = MRJ_COCOA;
}
} catch (NumberFormatException nfe) {
// Fall through to earlier versions of Java on the Mac.
}
if (jvm != MRJ_COCOA) {
String mrjVersion = System.getProperty("mrj.version"); //$NON-NLS-1$
String majorMRJVersion = mrjVersion.substring(0, 3);
try {
double version = Double.valueOf(majorMRJVersion).doubleValue();
if (version == 2) {
jvm = MRJ_2_0;
} else if (version >= 2.1 && version < 3) {
// Assume that all post-2.1 2.x versions of MRJ work the same. MRJ
// 2.1 actually
// works via Runtime.exec() and 2.2 supports that but has an
// openURL() method
// as well that we don't use because the Runtime.exec() method works
// fine.
jvm = MRJ_2_1;
} else if (version == 3.0) {
jvm = MRJ_3_0;
} else if (version >= 3.1) {
// Assume that all 3.1 and later versions of MRJ work the same.
jvm = MRJ_3_1;
} else {
loadedWithoutErrors = false;
errorMessage = "Unsupported MRJ version: " + version; //$NON-NLS-1$
}
} catch (NumberFormatException nfe) {
loadedWithoutErrors = false;
errorMessage = "Invalid MRJ version: " + mrjVersion; //$NON-NLS-1$
}
}
} else if (osName.startsWith("Windows")) { //$NON-NLS-1$
if (osName.indexOf("9") != -1 || osName.indexOf("Me") != -1) { //$NON-NLS-1$ //$NON-NLS-2$
jvm = WINDOWS_9x;
} else {
jvm = WINDOWS_NT;
}
} else {
jvm = OTHER;
}
if (loadedWithoutErrors) { // if we haven't hit any errors yet
loadedWithoutErrors = loadClasses();
}
}
/**
* This class should be never be instantiated; this just ensures so.
*/
private BrowserLauncher() {
}
/**
* Manually set the browser command. If this is set then none the this command
* will <b>always </b> be used.
*
* @param browserCommand
* browser command
*/
public static void setBrowserCommand(String browserCommand) {
BrowserLauncher.browserCommand = browserCommand;
}
/**
* Split a string into an array taking into account delimiters, quotes
* and escapes
*
* @param str string to split
* @param delim delimiter
* @param quote quote character
* @param escape escape character
* @return array
*/
public static String[] splitString(String str, char delim, char quote, char escape) {
Vector v = new Vector();
StringBuffer str1 = new StringBuffer();
char ch = ' ';
boolean inQuote = false;
boolean escaped = false;
for (int i = 0; i < str.length(); i++) {
ch = str.charAt(i);
if ((escape != -1) && (ch == escape) && !escaped) {
escaped = true;
} else {
if ((quote != -1) && (ch == quote) && !escaped) {
inQuote = !inQuote;
} else if (!inQuote && (ch == delim && !escaped)) {
v.addElement(str1.toString());
str1.setLength(0);
} else {
str1.append(ch);
}
if (escaped) {
escaped = false;
}
}
}
if (str.length() > 0) {
v.addElement(str1.toString());
}
String[] array;
array = new String[v.size()];
v.copyInto(array);
return array;
}
/**
* Called by a static initializer to load any classes, fields, and methods
* required at runtime to locate the user's web browser.
*
* @return <code>true</code> if all intialization succeeded
* <code>false</code> if any portion of the initialization failed
*/
private static boolean loadClasses() {
switch (jvm) {
case MRJ_2_0 :
return loadMRJ20Classes();
case MRJ_2_1 :
try {
mrjFileUtilsClass = Class.forName("com.apple.mrj.MRJFileUtils"); //$NON-NLS-1$
mrjOSTypeClass = Class.forName("com.apple.mrj.MRJOSType"); //$NON-NLS-1$
Field systemFolderField = mrjFileUtilsClass.getDeclaredField("kSystemFolderType"); //$NON-NLS-1$
kSystemFolderType = systemFolderField.get(null);
findFolder = mrjFileUtilsClass.getDeclaredMethod("findFolder", new Class[]{mrjOSTypeClass}); //$NON-NLS-1$
getFileCreator = mrjFileUtilsClass.getDeclaredMethod("getFileCreator", new Class[]{File.class}); //$NON-NLS-1$
getFileType = mrjFileUtilsClass.getDeclaredMethod("getFileType", new Class[]{File.class}); //$NON-NLS-1$
} catch (ClassNotFoundException cnfe) {
errorMessage = cnfe.getMessage();
return false;
} catch (NoSuchFieldException nsfe) {
errorMessage = nsfe.getMessage();
return false;
} catch (NoSuchMethodException nsme) {
errorMessage = nsme.getMessage();
return false;
} catch (SecurityException se) {
errorMessage = se.getMessage();
return false;
} catch (IllegalAccessException iae) {
errorMessage = iae.getMessage();
return false;
}
break;
case MRJ_3_0 :
try {
Class linker = Class.forName("com.apple.mrj.jdirect.Linker"); //$NON-NLS-1$
Constructor constructor = linker.getConstructor(new Class[]{Class.class});
linkage = constructor.newInstance(new Object[]{BrowserLauncher.class});
} catch (ClassNotFoundException cnfe) {
errorMessage = cnfe.getMessage();
return false;
} catch (NoSuchMethodException nsme) {
errorMessage = nsme.getMessage();
return false;
} catch (InvocationTargetException ite) {
errorMessage = ite.getMessage();
return false;
} catch (InstantiationException ie) {
errorMessage = ie.getMessage();
return false;
} catch (IllegalAccessException iae) {
errorMessage = iae.getMessage();
return false;
}
break;
case MRJ_3_1 :
case MRJ_COCOA :
String className;
if (jvm == MRJ_3_1) {
className = "com.apple.mrj.MRJFileUtils"; //$NON-NLS-1$
} else {
className = "com.apple.eio.FileManager"; //$NON-NLS-1$
}
try {
mrjFileUtilsClass = Class.forName(className);
openURL = mrjFileUtilsClass.getDeclaredMethod("openURL", new Class[]{String.class}); //$NON-NLS-1$
} catch (ClassNotFoundException cnfe) {
errorMessage = cnfe.getMessage();
return false;
} catch (NoSuchMethodException nsme) {
errorMessage = nsme.getMessage();
return false;
}
break;
default :
break;
}
return true;
}
/**
* Loads the classes, fields, and methods needed when running under MRJ 2.0.
* Sets <code>errorMessage</code> if it fails.
*
* @return <code>true</code> if all operations succeeded; <code>false</code>
* otherwise
*/
private static boolean loadMRJ20Classes() {
try {
Class aeTargetClass = Class.forName("com.apple.MacOS.AETarget"); //$NON-NLS-1$
Class osUtilsClass = Class.forName("com.apple.MacOS.OSUtils"); //$NON-NLS-1$
Class appleEventClass = Class.forName("com.apple.MacOS.AppleEvent"); //$NON-NLS-1$
Class aeClass = Class.forName("com.apple.MacOS.ae"); //$NON-NLS-1$
aeDescClass = Class.forName("com.apple.MacOS.AEDesc"); //$NON-NLS-1$
aeTargetConstructor = aeTargetClass.getDeclaredConstructor(new Class[]{int.class});
appleEventConstructor = appleEventClass.getDeclaredConstructor(new Class[]{int.class, int.class, aeTargetClass, int.class,
int.class});
aeDescConstructor = aeDescClass.getDeclaredConstructor(new Class[]{String.class});
makeOSType = osUtilsClass.getDeclaredMethod("makeOSType", new Class[]{String.class}); //$NON-NLS-1$
putParameter = appleEventClass.getDeclaredMethod("putParameter", new Class[]{int.class, aeDescClass}); //$NON-NLS-1$
sendNoReply = appleEventClass.getDeclaredMethod("sendNoReply", new Class[]{}); //$NON-NLS-1$
Field keyDirectObjectField = aeClass.getDeclaredField("keyDirectObject"); //$NON-NLS-1$
keyDirectObject = (Integer) keyDirectObjectField.get(null);
Field autoGenerateReturnIDField = appleEventClass.getDeclaredField("kAutoGenerateReturnID"); //$NON-NLS-1$
kAutoGenerateReturnID = (Integer) autoGenerateReturnIDField.get(null);
Field anyTransactionIDField = appleEventClass.getDeclaredField("kAnyTransactionID"); //$NON-NLS-1$
kAnyTransactionID = (Integer) anyTransactionIDField.get(null);
} catch (ClassNotFoundException cnfe) {
errorMessage = cnfe.getMessage();
return false;
} catch (NoSuchMethodException nsme) {
errorMessage = nsme.getMessage();
return false;
} catch (NoSuchFieldException nsfe) {
errorMessage = nsfe.getMessage();
return false;
} catch (IllegalAccessException iae) {
errorMessage = iae.getMessage();
return false;
}
return true;
}
/**
* Attempts to locate the default web browser on the local system. Caches the
* result so it only locates the browser once for each use of this class per
* JVM instance.
*
* @return The browser for the system. Note that this may not be what you
* would consider to be a standard web browser; instead, it's the
* application that gets called to open the default web browser. In
* some cases this will be a non-String object that provides the means
* of calling the default browser.
*/
private static Object locateBrowser() {
if (browser != null) {
return browser;
}
switch (jvm) {
case MRJ_2_0 :
try {
Integer finderCreatorCode = (Integer) makeOSType.invoke(null, new Object[]{FINDER_CREATOR});
Object aeTarget = aeTargetConstructor.newInstance(new Object[]{finderCreatorCode});
Integer gurlType = (Integer) makeOSType.invoke(null, new Object[]{GURL_EVENT});
Object appleEvent = appleEventConstructor.newInstance(new Object[]{gurlType, gurlType, aeTarget, kAutoGenerateReturnID,
kAnyTransactionID});
// Don't set browser = appleEvent because then the next time we call
// locateBrowser(), we'll get the same AppleEvent, to which we'll
// already have
// added the relevant parameter. Instead, regenerate the AppleEvent
// every time.
// There's probably a way to do this better; if any has any ideas,
// please let
// me know.
return appleEvent;
} catch (IllegalAccessException iae) {
browser = null;
errorMessage = iae.getMessage();
return browser;
} catch (InstantiationException ie) {
browser = null;
errorMessage = ie.getMessage();
return browser;
} catch (InvocationTargetException ite) {
browser = null;
errorMessage = ite.getMessage();
return browser;
}
case MRJ_2_1 :
File systemFolder;
try {
systemFolder = (File) findFolder.invoke(null, new Object[]{kSystemFolderType});
} catch (IllegalArgumentException iare) {
browser = null;
errorMessage = iare.getMessage();
return browser;
} catch (IllegalAccessException iae) {
browser = null;
errorMessage = iae.getMessage();
return browser;
} catch (InvocationTargetException ite) {
browser = null;
errorMessage = ite.getTargetException().getClass() + ": " + ite.getTargetException().getMessage(); //$NON-NLS-1$
return browser;
}
String[] systemFolderFiles = systemFolder.list();
// Avoid a FilenameFilter because that can't be stopped mid-list
for (int i = 0; i < systemFolderFiles.length; i++) {
try {
File file = new File(systemFolder, systemFolderFiles[i]);
if (!file.isFile()) {
continue;
}
// We're looking for a file with a creator code of 'MACS' and
// a type of 'FNDR'. Only requiring the type results in non-Finder
// applications being picked up on certain Mac OS 9 systems,
// especially German ones, and sending a GURL event to those
// applications results in a logout under Multiple Users.
Object fileType = getFileType.invoke(null, new Object[]{file});
if (FINDER_TYPE.equals(fileType.toString())) {
Object fileCreator = getFileCreator.invoke(null, new Object[]{file});
if (FINDER_CREATOR.equals(fileCreator.toString())) {
browser = file.toString(); // Actually the Finder, but that's OK
return browser;
}
}
} catch (IllegalArgumentException iare) {
browser = null;
errorMessage = iare.getMessage();
return null;
} catch (IllegalAccessException iae) {
browser = null;
errorMessage = iae.getMessage();
return browser;
} catch (InvocationTargetException ite) {
browser = null;
errorMessage = ite.getTargetException().getClass() + ": " + ite.getTargetException().getMessage(); //$NON-NLS-1$
return browser;
}
}
browser = null;
break;
case MRJ_3_0 :
case MRJ_3_1 :
browser = ""; // Return something non-null //$NON-NLS-1$
break;
case WINDOWS_NT :
browser = "cmd.exe"; //$NON-NLS-1$
break;
case WINDOWS_9x :
browser = "command.com"; //$NON-NLS-1$
break;
case OTHER :
default :
// On systems other than Windows and the Mac, we try via a rather Unix-
// specific hack to read the BROWSER environment variable
// <http://tuxedo.org/~esr/BROWSER/>. If we can't read that variable or
// it isn't set, we use Netscape.
// Note: This is commented out for now. It'll work soon.
browser = getEnvironmentBrowser();
if (browser == null) {
browser = "netscape"; //$NON-NLS-1$
}
break;
}
return browser;
}
/**
* Attempts to open the default web browser to the given URL.
*
* @param url
* The URL to open
* @throws IOException
* If the web browser could not be located or does not run
*/
public static void openURL(String url) throws IOException {
if (!loadedWithoutErrors) {
throw new IOException(MessageFormat.format(Messages.getString("BrowserLauncher.exceptionFindingBrowser"), new Object[] { errorMessage })); //$NON-NLS-1$
}
if(browserCommand != null) {
String[] cmd = splitString(browserCommand, ' ', '"', '\\');
String[] cmde = new String[cmd.length + 1];
System.arraycopy(cmd, 0, cmde, 0 , cmd.length);
cmde[cmd.length] = url;
Runtime.getRuntime().exec(cmde);
return;
}
Object browser = locateBrowser();
if (browser == null) {
throw new IOException(MessageFormat.format(Messages.getString("BrowserLauncher.unableToLocateBrowser"), new Object[] { errorMessage } ) ); //$NON-NLS-1$
}
switch (jvm) {
case MRJ_2_0 :
Object aeDesc = null;
try {
aeDesc = aeDescConstructor.newInstance(new Object[]{url});
putParameter.invoke(browser, new Object[]{keyDirectObject, aeDesc});
sendNoReply.invoke(browser, new Object[]{});
} catch (InvocationTargetException ite) {
throw new IOException(MessageFormat.format(Messages.getString("BrowserLauncher.invocationTargetException"), new Object[] { ite.getMessage() } ) ); //$NON-NLS-1$
} catch (IllegalAccessException iae) {
throw new IOException(MessageFormat.format(Messages.getString("BrowserLauncher.illegalAccess"), new Object[] { iae.getMessage() } )); //$NON-NLS-1$
} catch (InstantiationException ie) {
throw new IOException(MessageFormat.format(Messages.getString("BrowserLauncher.instantiation"), new Object[] { ie.getMessage() } )); //$NON-NLS-1$
} finally {
aeDesc = null; // Encourage it to get disposed if it was created
browser = null; // Ditto
}
break;
case MRJ_2_1 :
Runtime.getRuntime().exec(new String[]{(String) browser, url});
break;
case MRJ_3_0 :
int[] instance = new int[1];
int result = ICStart(instance, 0);
if (result == 0) {
int[] selectionStart = new int[]{0};
byte[] urlBytes = url.getBytes();
int[] selectionEnd = new int[]{urlBytes.length};
result = ICLaunchURL(instance[0], new byte[]{0}, urlBytes, urlBytes.length, selectionStart, selectionEnd);
if (result == 0) {
// Ignore the return value; the URL was launched successfully
// regardless of what happens here.
ICStop(instance);
} else {
throw new IOException(MessageFormat.format(Messages.getString("BrowserLauncher.cannotLaunchURL"), new Object[] { new Integer(result) } )); //$NON-NLS-1$
}
} else {
throw new IOException(MessageFormat.format(Messages.getString("BrowserLauncher.cannotCreateNetConfg"), new Object[] { new Integer(result) } ) ); //$NON-NLS-1$
}
break;
case MRJ_3_1 :
case MRJ_COCOA :
try {
openURL.invoke(null, new Object[]{url});
} catch (InvocationTargetException ite) {
throw new IOException(MessageFormat.format(Messages.getString("BrowserLauncher.cannotOpenURL"), new Object[] { ite.getMessage() } ) ); //$NON-NLS-1$
} catch (IllegalAccessException iae) {
throw new IOException(MessageFormat.format(Messages.getString("BrowserLauncher.ilegalAccessOpeningURL"), new Object[] { iae.getMessage() } ) ); //$NON-NLS-1$
}
break;
case WINDOWS_NT :
case WINDOWS_9x :
// Add quotes around the URL to allow ampersands and other special
// characters to work.
String[] arguments;
if (jvm == WINDOWS_9x) {
arguments = new String[]{(String) browser, FIRST_WINDOWS_PARAMETER, SECOND_WINDOWS_PARAMETER, null};
} else {
arguments = new String[]{(String) browser, FIRST_WINDOWS_PARAMETER, SECOND_WINDOWS_PARAMETER, THIRD_WINDOWS_PARAMETER,
null};
}
arguments[arguments.length - 1] = '"' + url + '"';
Process process = Runtime.getRuntime().exec(arguments);
// This avoids a memory leak on some versions of Java on Windows.
// That's hinted at in
// <http://developer.java.sun.com/developer/qow/archive/68/>.
try {
process.waitFor();
process.exitValue();
} catch (InterruptedException ie) {
throw new IOException(Messages.getString("BrowserLauncher.interruptedLaunchingBrowser") + ie.getMessage()); //$NON-NLS-1$
}
break;
case OTHER :
// Assume that we're on Unix and that Netscape is installed
// Attempt to open the URL in a currently running session of Netscape
process = Runtime.getRuntime().exec(
new String[]{(String) browser, NETSCAPE_REMOTE_PARAMETER,
NETSCAPE_OPEN_PARAMETER_START + url + NETSCAPE_OPEN_PARAMETER_END});
try {
int exitCode = process.waitFor();
if (exitCode != 0) { // if Netscape was not open
Runtime.getRuntime().exec(new String[]{(String) browser, url});
}
} catch (InterruptedException ie) {
throw new IOException(MessageFormat.format(Messages.getString("BrowserLauncher.interruptedLaunchingBrowser"), new Object[] { ie.getMessage() } ) ); //$NON-NLS-1$
}
break;
default :
// This should never occur, but if it does, we'll try the simplest thing
// possible
Runtime.getRuntime().exec(new String[]{(String) browser, url});
break;
}
}
/**
* Tries to read the BROWSER environment variable, which should be set to the
* absolute path of the user's preferred web browser as proposed at
* <http://tuxedo.org/~esr/BROWSER/>.
*
* @return The value of the BROWSER environment variable, or null if the
* variable does not exist or can't be read.
*/
private static String getEnvironmentBrowser() {
String browser = null;
try {
String[] echoParams = {"/bin/sh", "-c", "echo ${BROWSER:-netscape}"}; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
Process echoProcess = Runtime.getRuntime().exec(echoParams);
InputStream echoStream = echoProcess.getInputStream();
BufferedReader echoReader = new BufferedReader(new InputStreamReader(echoStream));
browser = echoReader.readLine();
echoReader.close();
} catch (Throwable t) {
// If anything goes wrong, we'll return null.
}
return browser;
}
/**
* Methods required for Mac OS X 10.0.x. The presence of native methods does
* not cause any problems on other platforms.
*/
private native static int ICStart(int[] instance, int signature);
private native static int ICStop(int[] instance);
private native static int ICLaunchURL(int instance, byte[] hint, byte[] data, int len, int[] selectionStart, int[] selectionEnd);
}