/*
* $RCSfile: JNLPAppletLauncher.java,v $
*
* Copyright 2007 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any
* kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
* EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
* NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
* USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
* DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
* ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
* CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
* REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
* INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed, licensed or
* intended for use in the design, construction, operation or
* maintenance of any nuclear facility.
*
* $Revision: 1.29 $
* $Date: 2008/10/21 21:33:50 $
* $State: Exp $
*/
import java.applet.Applet;
import java.applet.AppletContext;
import java.applet.AppletStub;
import java.awt.BorderLayout;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.FilenameFilter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLConnection;
import java.nio.channels.FileChannel;
import java.nio.channels.FileLock;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.cert.Certificate;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;
import java.util.Set;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.logging.Logger;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.SwingUtilities;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
/**
* The JNLPAppletLauncher is a general purpose JNLP-based applet
* launcher class for deploying applets that use extension libraries
* containing native code. It allows applets to use extensions like
* Java 3D, JOGL, and JOAL very easily, with just a few additional
* parameters to the <applet> tag, on Java SE
* versions as far back as 1.4.2.
*
*
*
* Like Java Web Start, the JNLPAppletLauncher uses an extension's
* .jnlp file to locate the native resources for a given extension.
* The applet developer only needs to specify the platform-independent
* .jar files containing the .class files for the extension. The
* platform-specific "nativelib" .jar files are downloaded
* automatically from the same server that hosts the extension's Java
* Web Start binaries.
*
*
*
* Extensions that support JNLPAppletLauncher include Java 3D, JOGL,
* and JOAL. More can be added without needing to modify the
* JNLPAppletLauncher. See the section below on
* JNLPAppletLauncher.
*
*
How to Deploy Applets Using the JNLPAppletLauncher
*
*
* The applet-launcher.jar file containing the
* JNLPAppletLauncher class must be signed with the same certificate
* as the extension's native resources, for example "sun microsystems,
* inc.". The user will receive a security dialog and will be prompted
* to accept the certificate for the JLNPAppletLauncher. The applet
* being deployed may be either signed or unsigned; if it is unsigned,
* it runs inside the security sandbox, and if it is signed, the user
* receives a security dialog to accept the certificate for the applet
* (in addition to the applet-launcher jar, if it is signed by a
* different entity).
*
*
*
* The steps for deploying such applets are straightforward. First,
* the archive parameter to the applet tag must contain
* applet-laucher.jar, the extension .jar files, and any
* jar files associated with your applet. See the section on
*
*
*
* Second, the name of your applet's main class and a textual
* description must be specified via the applet tag parameters
* subapplet.classname and
* subapplet.displayname.
*
*
*
* Finally, the URLs for the extension .jnlp files being used must be
* specified as parameters. The jnlpNumExtensions
* parameter indicates the number of JNLP files that are referenced,
* and for n such files, their URLs are passed in as
* parameters jnlpExtension1 ...
* jnlpExtension[n].
*
*
Organizing Jar Files
*
*
*
* Traditionally, applets are specified with a codebase and an archive
* parameter, the latter which is a list of jar files relative to that
* codebase. The codebase is optional and defaults to the directory on
* the web server containing the HTML document which contains the
* applet tag. See the documentation for the
* tag.
*
*
*
* It is not well documented, but at least in the Sun JRE at least as
* far back as Java SE 1.4.2, it is possible to use absolute URLs in
* the applet tag's archive parameter. This functionality works on all
* major operating systems: Windows, Mac OS X, Linux, and Solaris.
* This means that you can pull code resources from multiple web
* servers, not just one, in similar fashion to Java Web Start and its
* extension mechanism. (The security implications are that each
* unsigned piece of code downloaded from a separate server receives
* sandboxed permissions to connect back to that server; if there are
* multiple pieces of unsigned code on the stack during execution of
* the program then the permissions will be the intersection of all of
* those on the stack, implying that no programmatic network
* connections back to the web server(s) will be allowed. See the
* details.)
*
*
*
* This capability means that your applets can refer directly to
* extensions like Java 3D and JOGL hosted on Sun's web servers
* without having to duplicate their jar files on your web server.
*
*
*
* To use this capability effectively with the JNLPAppletLauncher, you
* need to pull in at least three primary pieces of code: the applet
* launcher itself, your applet's code, and the Java code for the
* extension, or extensions, your applet depends on. (Remember that
* the JNLPAppletLauncher's primary function is to automatically
* download the native code associated with these extensions, and not
* the Java code for these extensions.)
*
*
*
* You might choose to specify the codebase of your applet to point to
* your web server's directory containing the jar files of your
* applet, and specify absolute URLs to the
* applet-launcher.jar and the extension jar files. Or
* you might decide to point the codebase to the server which hosts
* the applet launcher and specify all of the other resources,
* including your applet, with absolute URLs. Or you might decide to
* use all absolute URLs in your archive tag with no codebase. The
* techniques are basically equivalent. We recommend either pointing
* the codebase to the directory containing your applet's jars, using
* relative URLs for your applet, and using absolute URLs for all
* other resources; or using all absolute URLs.
*
*
*
* Alternatively, you can re-host the jar files and/or JNLP files and
* nativelib jars for the extensions you use on your own web
* server. This has the advantage that your applet will connect to
* fewer web servers upon startup, but has the disadvantages of
* requiring additional maintenance on your part and not automatically
* receiving updates to the extensions when they are published.
*
*
*
* Note that if you are planning to call into your applet from
* JavaScript that there are some
* aware of.
*
*
*
* The jnlpExtension parameters passed to the
* JNLPAppletLauncher must be specified with absolute URLs.
*
*
*
* The examples show how to use the
* JNLPAppletLauncher in a few different scenarios.
*
* The codebase_lookup parameter
*
*
*
* This applet parameter was not well documented until
* but it disables certain legacy behavior of the Java Plug-In. Before
* the introduction of jar files, applets used to host their class
* files and resources as flat files on the web server. Once jar files
* were introduced, it was possible to improve the efficiency of
* resource loading for applets, but (apparently) not without breaking
* compatibility. An applet can specify the parameter
*
*
* <param name="codebase_lookup" value="false">
*
*
*
*
* to improve efficiency of its loading if it does not rely on
* fetching flat files from the web server off the codebase.
* We recommend setting this parameter.
*
*
Applets using the OpenGL(r) 3D API
*
*
*
* Applets using the OpenGL 3D graphics API, for example through JOGL
* or Java 3D, may encounter robustness issues on the Windows platform
* because Sun's Java 2D implementation on Windows uses Microsoft's
* DirectDraw API. DirectDraw and OpenGL are incompatible at the
* driver level.
*
*
*
* As a workaround for this problem, the JNLPAppletLauncher supports
* disabling the use of DirectDraw. Currently this can only be done on
* a global basis, for all applets, but doing so is unlikely to slow
* down other non-3D applets significantly.
*
*
*
* Specifying the applet parameter
*
*
* <param name="noddraw.check" value="true">
*
*
*
*
* will cause the applet launcher, when run on Windows, to check to
* see whether DirectDraw is enabled and, if so, will prompt the user
* with a dialog box asking to disable it. A browser restart is
* required if the setting is changed.
*
*
*
* If the dialog box is undesirable in a given situation, you can
* force the noddraw check to always disable DirectDraw with the two
* applet parameters:
*
*
* <param name="noddraw.check" value="true">
* <param name="noddraw.check.silent" value="true">
*
*
*
*
* In this case it will not be obvious to the end user that a browser
* restart might be required for best robustness, but you could
* potentially document the need to try restarting the browser in case
* of instability.
*
*
Scripting Support
*
*
*
* The JNLPAppletLauncher supports interaction with the sub-applet via
* the getSubApplet() method. Calling this method from
* JavaScript will return the subordinate applet with which you can
* then interact via JavaScript.
*
*
*
* There are currently some scripting-related caveats associated with
* pulling jar files from multiple locations
* for a particular applet. In particular, it appears that the
* LiveConnect security model on Mac OS X in the Safari browser
* prohibits JavaScript from one domain from communicating with Java
* code (such as an applet) downloaded from another domain. This is
* correct according to older versions of the LiveConnect
* specification, although some more recent implementations of
* LiveConnect allow this, restricting the privileges of such calls in
* other ways.
*
*
*
* The workaround for this problem seems to be to host the
* applet-launcher.jar on your web site if you need to
* talk to your applet from JavaScript. Your applet's jars will likely
* also need to be hosted from the same web server. If you talk to
* extension APIs in your archive tag directly from
* JavaScript, you may find it necessary to host those jars on your
* web server as well.
*
*
*
* From a practical standpoint, most applet developers using
* JavaScript with the JNLPAppletLauncher will only need to re-host at
* most applet-launcher.jar on their web site.
*
*
Examples
*
*
*
* An applet using JOGL as an extension. Note that this example does
* not specify a codebase, instead specifying all of its archive tag
* elements with absolute URLs (split here for readability; in a real
* applet tag they must be all on one line). Note also the use of the
* noddraw.check parameter to disable the use of
* DirectDraw since using JOGL implies the use of OpenGL.
*
*
* <applet code="org.jdesktop.applet.util.JNLPAppletLauncher"
* width=600
* height=400
* archive="http://download.java.net/media/applet-launcher/applet-launcher.jar,
* http://download.java.net/media/jogl/builds/archive/jsr-231-webstart-current/jogl.jar,
* http://download.java.net/media/gluegen/webstart/gluegen-rt.jar,
* http://download.java.net/media/jogl/builds/archive/jsr-231-webstart-current/jogl-demos.jar">
* <param name="codebase_lookup" value="false">
* <param name="subapplet.classname" value="demos.applets.GearsApplet">
* <param name="subapplet.displayname" value="JOGL Gears Applet">
* <param name="noddraw.check" value="true">
* <param name="progressbar" value="true">
* <param name="jnlpNumExtensions" value="1">
* <param name="jnlpExtension1"
* value="http://download.java.net/media/jogl/builds/archive/jsr-231-webstart-current/jogl.jnlp">
* </applet>
*
*
*
*
* An applet using both JOGL and JOAL as extensions. Note again that
* all code resources are specified with absolute URLs. In this
* example the unsigned applet pulls in code from both
* jogl-demos.jar and joal-demos.jar. Note
* again the use of the noddraw.check parameter.
*
*
* <applet code="org.jdesktop.applet.util.JNLPAppletLauncher"
* width=600
* height=400
* archive="http://download.java.net/media/applet-launcher/applet-launcher.jar,
* http://download.java.net/media/jogl/builds/archive/jsr-231-webstart-current/jogl.jar,
* http://download.java.net/media/gluegen/webstart/gluegen-rt.jar,
* http://download.java.net/media/jogl/builds/archive/jsr-231-webstart-current/jogl-demos.jar,
* http://download.java.net/media/joal/webstart/joal.jar,
* http://download.java.net/media/joal/webstart/joal-demos.jar">
* <param name="codebase_lookup" value="false">
* <param name="subapplet.classname" VALUE="demos.applets.GearsJOALApplet">
* <param name="subapplet.displayname" VALUE="JOGL / JOAL Gears Applet">
* <param name="noddraw.check" value="true">
* <param name="progressbar" value="true">
* <param name="jnlpNumExtensions" value="2">
* <param name="jnlpExtension1"
* value="http://download.java.net/media/jogl/builds/archive/jsr-231-webstart-current/jogl.jnlp">
* <param name="jnlpExtension2"
* value="http://download.java.net/media/joal/webstart/joal.jnlp">
* </applet>
*
*
*
* An applet using Java 3D as an extension:
*
*
* <applet code="org.jdesktop.applet.util.JNLPAppletLauncher"
* width=400
* height=300
* archive="myapplet.jar,
* http://download.java.net/media/applet-launcher/applet-launcher.jar,
* http://download.java.net/media/java3d/webstart/release/j3d/latest/j3dcore.jar,
* http://download.java.net/media/java3d/webstart/release/j3d/latest/j3dutils.jar,
* http://download.java.net/media/jogl/builds/archive/jsr-231-webstart-current/jogl.jar,
* http://download.java.net/media/gluegen/webstart/gluegen-rt.jar,
* http://download.java.net/media/java3d/webstart/release/vecmath/latest/vecmath.jar">
* <param name="codebase_lookup" value="false">
* <param name="subapplet.classname" value="mypkg.MyApplet">
* <param name="subapplet.displayname" value="My Java 3D Applet">
* <param name="jnlpNumExtensions" value="1">
* <param name="jnlpExtension1" value="http://download.java.net/media/java3d/webstart/release/java3d-latest.jnlp">
* <param name="progressbar" value="true">
* <param name="noddraw.check" value="true">
* </applet>
*
*
*
* Note that the JOGL jar files are also included in this example. This is
* necessary in order to run on Mac OS X, for which Java 3D always uses
* JOGL to render.
*
*
Locations of Standard Extensions
*
*
*
* This section describes how to set up the archive and
* jnlpExtension parameters for a few standard
* extensions.
*
*
JNLPAppletLauncher
*
*
*
* The master jar file for the JNLPAppletLauncher is located at the following URL:
*
* http://download.java.net/media/applet-launcher/applet-launcher.jar
*
*
*
*
* This jar needs to be added to your archive parameter.
*
*
Java 3D
*
*
*
* Java 3D 1.5.1 and later supports the
* JNLPAppletLauncher. You will need to add the following URLs to your
* archive parameter:
*
*
* http://download.java.net/media/java3d/webstart/release/j3d/latest/j3dcore.jar
* http://download.java.net/media/java3d/webstart/release/j3d/latest/j3dutils.jar
* http://download.java.net/media/java3d/webstart/release/vecmath/latest/vecmath.jar
*
*
* Then add the following to one of your jnlpExtension parameters:
*
*
* http://download.java.net/media/java3d/webstart/release/java3d-latest.jnlp
*
*
* If you want to deploy your applet on Mac OS X, you will also need to
* include JOGL by adding the following URLs to your archive parameter:
*
*
* http://download.java.net/media/jogl/builds/archive/jsr-231-webstart-current/jogl.jar
* http://download.java.net/media/gluegen/webstart/gluegen-rt.jar
*
*
* Note that this will only work if Java 3D is not installed into the JRE as an
* extension. Since Apple ships their JRE with Java 3D pre-installed, the
* end-user must uninstall Java 3D in order for Java 3D applets to work on Mac.
*
*
* Note that the Java 3D .jnlp extension will automatically pull in the
* native code associated with JOGL and the GlueGen runtime, so you don't have
* to separately refer to those .jnlp files.
*
*
JOGL
*
*
*
* JOGL 1.1.1-rc3 and later support the JNLPAppletLauncher. You will
* need to add the following URL to your archive parameter:
*
*
* http://download.java.net/media/jogl/builds/archive/jsr-231-webstart-current/jogl.jar
*
*
*
*
* Because JOGL depends on the GlueGen runtime, you will also need to
* add the following URL to your archive parameter:
*
*
* http://download.java.net/media/gluegen/webstart/gluegen-rt.jar
*
*
*
*
* Finally, add the following to one of your
* jnlpExtension parameters:
*
*
* http://download.java.net/media/jogl/builds/archive/jsr-231-webstart-current/jogl.jnlp
*
*
*
*
* Note that the jogl.jnlp extension will automatically pull in the
* native code associated with the GlueGen runtime, so you don't have
* to separately refer to the gluegen-rt.jnlp file.
*
*
JOAL
*
*
*
* JOAL 1.1.1 and later support the JNLPAppletLauncher. You will need
* to add the following URL to your archive parameter:
*
*
* http://download.java.net/media/joal/webstart/joal.jar
*
*
*
*
* Because JOAL, like JOGL, depends on the GlueGen runtime, you will
* also need to add the following URL to your archive parameter:
*
*
* http://download.java.net/media/gluegen/webstart/gluegen-rt.jar
*
*
*
*
* (If you are using both JOGL and JOAL, you only need to refer to
* gluegen-rt.jar once in your archive parameter.)
*
*
*
* Finally, add the following to one of your
* jnlpExtension parameters:
*
*
* http://download.java.net/media/joal/webstart/joal.jnlp
*
*
*
*
* Note that the joal.jnlp extension will automatically pull in the
* native code associated with the GlueGen runtime, so you don't have
* to separately refer to the gluegen-rt.jnlp file.
*
*
Modifying Your Extension To Work With The JNLPAppletLauncher
*
*
*
* If you are the author of an extension like JOGL which requires some
* native code, with only a simple code change you can make your
* extension work with the JNLPAppletLauncher. Simply add the
* following method somewhere in your code:
*
*
* private static void loadLibraryInternal(String libraryName) {
* String sunAppletLauncher = System.getProperty("sun.jnlp.applet.launcher");
* boolean usingJNLPAppletLauncher =
* Boolean.valueOf(sunAppletLauncher).booleanValue();
*
* boolean loaded = false;
* if (usingJNLPAppletLauncher) {
* try {
* Class jnlpAppletLauncherClass =
* Class.forName("org.jdesktop.applet.util.JNLPAppletLauncher");
* Method jnlpLoadLibraryMethod =
* jnlpAppletLauncherClass.getDeclaredMethod("loadLibrary",
* new Class[] { String.class });
* jnlpLoadLibraryMethod.invoke(null, new Object[] { libraryName });
* loaded = true;
* } catch (ClassNotFoundException ex) {
* System.err.println("loadLibrary(" + libName + ")");
* System.err.println(ex);
* System.err.println("Attempting to use System.loadLibrary instead");
* } catch (Exception e) {
* Throwable t = e;
* if (t instanceof InvocationTargetException) {
* t = ((InvocationTargetException) t).getTargetException();
* }
* if (t instanceof Error)
* throw (Error) t;
* if (t instanceof RuntimeException) {
* throw (RuntimeException) t;
* }
* // Throw UnsatisfiedLinkError for best compatibility with System.loadLibrary()
* throw (UnsatisfiedLinkError) new UnsatisfiedLinkError().initCause(e);
* }
* }
*
* if (!loaded) {
* System.loadLibrary(libraryName);
* }
* }
*
*
*
*
* and wherever you would call System.loadLibrary() (from
* within an AccessController.doPrivileged() block) to
* load your extension's native code, call the above
* loadLibraryInternal method instead.
*
*
*
* Note again that because the applet-launcher.jar and
* the nativelib jars for all extensions must currently be signed with
* the same certificate, this implies that you must resign both the
* applet launcher as well as any other extensions your applet relies
* on (unless yours is a Sun-standard extension and can be signed with
* Sun's code signing certificate).
*
*
Acknowledgments
*
*
*
* The JNLPAppletLauncher was developed by Kevin Rushforth, Kenneth
* Russell, and Chien Yang. It is based on the earlier
* JOGLAppletLauncher developed by Lilian Chamontin.
*/
public class JNLPAppletLauncher extends Applet {
private static final boolean VERBOSE = false;
private static final boolean DEBUG = false;
// Indicated that the applet was successfully initialized
private boolean isInitOk = false;
// True the first time start is called, false afterwards
private boolean firstStart = true;
// Indicates that the applet was started successfully
private boolean appletStarted = false;
// The applet we have to start
private Applet subApplet;
// Class name of applet to load (required)
private String subAppletClassName; // from applet PARAM subapplet.classname
// String representing the name of the applet (optional)
private String subAppletDisplayName; // from applet PARAM subapplet.displayname
// URL to an image that we will display while installing (optional)
private URL subAppletImageURL; // from applet PARAM subapplet.image
// Panel that will hold the splash-screen image and progress bar while loading
private JPanel loaderPanel;
// Helpers for updating deployment.properties with -Dsun.java2d.noddraw=true
private static final String JRE_PREFIX = "deployment.javapi.jre.";
private static final String NODDRAW_PROP = "-Dsun.java2d.noddraw=true";
private static final String DONT_ASK = ".dont_ask";
// Optional progress bar
private JProgressBar progressBar = null;
/*
* The following variables are defined per-applet, but we can assert that
* they will not differ for each applet that is loaded by the same
* ClassLoader. This means we can just cache the values from the first
* applet. We will check the values for subsequent applets and throw an
* exception if there are any differences.
*/
// Flag indicating that this is the first applet
private static boolean firstApplet = true;
// List of extension JNLP files. This is saved for the first applet
// and verified for each subsequent applet.
private static List/**/ jnlpExtensions = null;
// Code base and archive tag for all applets that use the same ClassLoader
private static URL codeBase;
private static String archive = null;
// Persistent cache directory for storing native libraries and time stamps.
// The directory is of the form:
//
// ${user.home}/.jnlp-applet/cache//
//
private static File cacheDir;
// Set of jar files specified in the JNLP files.
// Currently unused.
private static Set/**/ jarFiles;
// Set of native jar files to be loaded. We need to download these
// native jars, verify the signatures, verify the security certificates,
// and extract the native libraries from each jar.
private static Set/**/ nativeJars;
// Native library prefix (e.g., "lib") and suffix (e.g. ".dll" or ".so")
private static String nativePrefix;
private static String nativeSuffix;
// A HashMap of native libraries that can be loaded with System.load()
// The key is the string name of the library as passed into the loadLibrary
// call; it is the file name without the directory or the platform-dependent
// library prefix and suffix. The value is the absolute path name to the
// unpacked library file in nativeTmpDir.
private static Map/**/ nativeLibMap;
/*
* The following variables are per-ClassLoader static globals.
*/
// Flag indicating that we got a fatal error in the static initializer.
// If this happens we will not attempt to start any applets.
private static boolean staticInitError = false;
// Base temp directory used by JNLPAppletLauncher. This is set to:
//
// ${java.io.tmpdir}/jnlp-applet
//
private static File tmpBaseDir;
// String representing the name of the temp root directory relative to the
// tmpBaseDir. Its value is "jlnNNNNN", which is the unique filename created
// by File.createTempFile() without the ".tmp" extension.
//
private static String tmpRootPropValue;
// Root temp directory for this JVM instance. Used to store the individual,
// per-ClassLoader directories that will be used to load native code. The
// directory name is:
//
// /
//
// Old temp directories are cleaned up the next time a JVM is launched that
// uses JNLPAppletLauncher.
//
private static File tmpRootDir;
// Temporary directory for loading native libraries for this instance of
// the class loader. The directory name is:
//
// /jlnMMMMM
//
// where jlnMMMMM is the unique filename created by File.createTempFile()
// without the ".tmp" extension.
//
private static File nativeTmpDir;
/*
* IMPLEMENTATION NOTES
*
* Assumptions:
*
* A. Multiple applets can be launched from the same class loader, and thus
* share the same set of statics and same set of native library symbols.
* This can only happen if the codebase and set of jar files as specified
* in the archive tag are identical. Applets launched from different code
* bases or whose set of jar files are different will always get a
* different ClassLoader. If this assumption breaks, too many other
* things wouldn't work properly, so we can be assured that it will hold.
* However, we cannot assume that the converse is true; it is possible
* that two applets with the same codebase and archive tag will be loaded
* from a different ClassLoader.
*
* B. Given the above, this means that we must store the native libraries,
* and keep track of which ones have already been loaded statically, that
* is, per-ClassLoader rather than per-Applet. This is a good thing,
* because it turns out to be difficult (at best) to find the instance of
* the Applet at loadLibrary time.
*
* Our solution is as follows:
*
* Use the same criteria for determining the cache dir that JPI
* uses to determine the class loader to use. More precisely, we will
* create a directory based on the codebase and complete set of jar files
* specified by the archive tag. To support the case where each applet is
* in a unique class loader, we will copy the native libraries into a
* unique-per-ClassLoader temp directory and do the System.load() from
* there. For a robust solution, we need to lock the cache directory
* during validation, since multiple threads, or even multiple processes,
* can access it concurrently.
*
* TODO: We need a way to clear the cache.
*
* We also considered, but rejected, the following solutions:
*
* 1. Use a temporary directory for native jars, download, verify, unpack,
* and loadLibrary in this temp dir. No persistent cache.
*
* 2. Cache the native libraries in a directory based on the codebase and
* the extension jars (i.e., the subset of the jars in the archive tag
* that also appear in one of the extension JNLP files). Copy the native
* libraries into a unique-per-ClassLoader temp directory and load from
* there. Note that this has the potential problem of violating the
* assertion that two different applets that share the same ClassLoader
* must map to the same cache directory.
*
* 3. Use the exact criteria for determining the cache dir that JPI
* uses to determine which class loader to use (as in our proposed
* solution above), unpack the native jars into the cache directory and
* load from there. This obviates the need for locking, but it will break
* if the JPI ever isolates each applet into its own ClassLoader.
*/
/**
* Constructs an instance of the JNLPAppletLauncher class. This is called by
* Java Plug-in, and should not be called directly by an application or
* applet.
*/
public JNLPAppletLauncher() {
}
/* @Override */
public void init() {
if (VERBOSE) {
System.err.println();
}
if (DEBUG) {
System.err.println("Applet.init");
}
if (staticInitError) {
return;
}
subAppletClassName = getParameter("subapplet.classname");
if (subAppletClassName == null) {
displayError("Init failed : Missing subapplet.classname parameter");
return;
}
subAppletDisplayName = getParameter("subapplet.displayname");
if (subAppletDisplayName == null) {
subAppletDisplayName = "Applet";
}
subAppletImageURL = null;
try {
String subAppletImageStr = getParameter("subapplet.image");
if (subAppletImageStr != null && subAppletImageStr.length() > 0) {
subAppletImageURL = new URL(subAppletImageStr);
}
} catch (IOException ex) {
ex.printStackTrace();
// Continue with a null subAppletImageURL
}
if (DEBUG) {
System.err.println("subapplet.classname = " + subAppletClassName);
System.err.println("subapplet.displayname = " + subAppletDisplayName);
if (subAppletImageURL != null) {
System.err.println("subapplet.image = " + subAppletImageURL.toExternalForm());
}
}
initLoaderLayout();
isInitOk = true;
}
/* @Override */
public void start() {
if (DEBUG) {
System.err.println("Applet.start");
}
if (isInitOk) {
if (firstStart) { // first time
firstStart = false;
Thread startupThread = new Thread() {
public void run() {
initAndStartApplet();
}
};
startupThread.setName("AppletLauncher-Startup");
startupThread.setPriority(Thread.NORM_PRIORITY - 1);
startupThread.start();
} else if (appletStarted) {
checkNoDDrawAndUpdateDeploymentProperties();
// We have to start again the applet (start can be called multiple times,
// e.g once per tabbed browsing
subApplet.start();
}
}
}
/* @Override */
public void stop(){
if (subApplet != null) {
subApplet.stop();
}
}
/* @Override */
public void destroy(){
if (subApplet != null) {
subApplet.destroy();
}
}
/** Helper method to make it easier to call methods on the
sub-applet from JavaScript. */
public Applet getSubApplet() {
return subApplet;
}
//----------------------------------------------------------------------
// Support for forwarding notifications about dragged-out applets
//
public void appletDragStarted() {
try {
Method m = getSubApplet().getClass().getMethod("appletDragStarted", null);
m.invoke(getSubApplet(), null);
} catch (Throwable t) {
}
}
public void appletDragFinished() {
try {
Method m = getSubApplet().getClass().getMethod("appletDragFinished", null);
m.invoke(getSubApplet(), null);
} catch (Throwable t) {
}
}
public void appletRestored() {
try {
Method m = getSubApplet().getClass().getMethod("appletRestored", null);
m.invoke(getSubApplet(), null);
} catch (Throwable t) {
}
}
public boolean isAppletDragStart(MouseEvent e) {
try {
Method m = getSubApplet().getClass().getMethod("isAppletDragStart",
new Class[] { MouseEvent.class });
return ((Boolean) m.invoke(getSubApplet(), new Object[] { e })).booleanValue();
} catch (Throwable t) {
// Throw an exception back to the Java Plug-In to cause it
// to use the default functionality
throw new RuntimeException(t);
}
}
public void setAppletCloseListener(ActionListener l) {
try {
Method m = getSubApplet().getClass().getMethod("setAppletCloseListener",
new Class[] { ActionListener.class });
m.invoke(getSubApplet(), new Object[] { l });
} catch (Throwable t) {
// Throw an exception back to the Java Plug-In to cause it
// to use the default functionality
throw new RuntimeException(t);
}
}
/**
* This method is called by the static initializer to create / initialize
* the temp root directory that will hold the temp directories for this
* instance of the JVM. This is done as follows:
*
* 1. Synchronize on a global lock. Note that for this purpose we will
* use System.out in the absence of a true global lock facility.
* We are careful not to hold this lock too long.
*
* 2. Check for the existence of the "jnlp.applet.launcher.tmproot"
* system property.
*
* a. If set, then some other thread in a different ClassLoader has
* already created the tmprootdir, so we just need to
* use it. The remaining steps are skipped.
*
* b. If not set, then we are the first thread in this JVM to run,
* and we need to create the the tmprootdir.
*
* 3. Create the tmprootdir, along with the appropriate locks.
* Note that we perform the operations in the following order,
* prior to creating tmprootdir itself, to work around the fact that
* the file creation and file lock steps are not atomic, and we need
* to ensure that a newly-created tmprootdir isn't reaped by a
* concurrently running JVM.
*
* create jlnNNNN.tmp using File.createTempFile()
* lock jlnNNNN.tmp
* create jlnNNNN.lck while holding the lock on the .tmp file
* lock jlnNNNN.lck
*
* Since the Reaper thread will enumerate the list of *.lck files
* before starting, we can guarantee that if there exists a *.lck file
* for an active process, then the corresponding *.tmp file is locked
* by that active process. This guarantee lets us avoid reaping an
* active process' files.
*
* 4. Set the "jnlp.applet.launcher.tmproot" system property.
*
* 5. Add a shutdown hook to cleanup jlnNNNN.lck and jlnNNNN.tmp. We
* don't actually expect that this shutdown hook will ever be called,
* but the act of doing this, ensures that the locks never get
* garbage-collected, which is necessary for correct behavior when
* the first ClassLoader is later unloaded, while subsequent Applets
* are still running.
*
* 6. Start the Reaper thread to cleanup old installations.
*/
private static void initTmpRoot() throws IOException {
if (VERBOSE) {
System.err.println("---------------------------------------------------");
}
synchronized (System.out) {
// Get the name of the tmpbase directory.
String tmpBaseName = System.getProperty("java.io.tmpdir") +
File.separator + "jnlp-applet";
tmpBaseDir = new File(tmpBaseName);
// Get the value of the tmproot system property
final String tmpRootPropName = "jnlp.applet.launcher.tmproot";
tmpRootPropValue = System.getProperty(tmpRootPropName);
if (tmpRootPropValue == null) {
// Create the tmpbase directory if it doesn't already exist
tmpBaseDir.mkdir();
if (!tmpBaseDir.isDirectory()) {
throw new IOException("Cannot create directory " + tmpBaseDir);
}
// Create ${tmpbase}/jlnNNNN.tmp then lock the file
File tmpFile = File.createTempFile("jln", ".tmp", tmpBaseDir);
if (VERBOSE) {
System.err.println("tmpFile = " + tmpFile.getAbsolutePath());
}
final FileOutputStream tmpOut = new FileOutputStream(tmpFile);
final FileChannel tmpChannel = tmpOut.getChannel();
final FileLock tmpLock = tmpChannel.lock();
// Strip off the ".tmp" to get the name of the tmprootdir
String tmpFileName = tmpFile.getAbsolutePath();
String tmpRootName = tmpFileName.substring(0, tmpFileName.lastIndexOf(".tmp"));
// create ${tmpbase}/jlnNNNN.lck then lock the file
String lckFileName = tmpRootName + ".lck";
File lckFile = new File(lckFileName);
if (VERBOSE) {
System.err.println("lckFile = " + lckFile.getAbsolutePath());
}
lckFile.createNewFile();
final FileOutputStream lckOut = new FileOutputStream(lckFile);
final FileChannel lckChannel = lckOut.getChannel();
final FileLock lckLock = lckChannel.lock();
// Create tmprootdir
tmpRootDir = new File(tmpRootName);
if (DEBUG) {
System.err.println("tmpRootDir = " + tmpRootDir.getAbsolutePath());
}
if (!tmpRootDir.mkdir()) {
throw new IOException("Cannot create " + tmpRootDir);
}
// Add shutdown hook to cleanup the OutputStream, FileChannel,
// and FileLock for the jlnNNNN.lck and jlnNNNN.lck files.
// We do this so that the locks never get garbage-collected.
Runtime.getRuntime().addShutdownHook(new Thread() {
/* @Override */
public void run() {
// NOTE: we don't really expect that this code will ever
// be called. If it does, we will close the output
// stream, which will in turn close the channel.
// We will then release the lock.
try {
tmpOut.close();
tmpLock.release();
lckOut.close();
lckLock.release();
} catch (IOException ex) {
// Do nothing
}
}
});
// Set the system property...
tmpRootPropValue = tmpRootName.substring(tmpRootName.lastIndexOf(File.separator) + 1);
System.setProperty(tmpRootPropName, tmpRootPropValue);
if (VERBOSE) {
System.err.println("Setting " + tmpRootPropName + "=" + tmpRootPropValue);
}
// Start a new Reaper thread to do stuff...
Thread reaperThread = new Thread() {
/* @Override */
public void run() {
deleteOldTempDirs();
}
};
reaperThread.setName("AppletLauncher-Reaper");
reaperThread.start();
} else {
// Make sure that the property is not set to an illegal value
if (tmpRootPropValue.indexOf('/') >= 0 ||
tmpRootPropValue.indexOf(File.separatorChar) >= 0) {
throw new IOException("Illegal value of: " + tmpRootPropName);
}
// Set tmpRootDir = ${tmpbase}/${jnlp.applet.launcher.tmproot}
if (VERBOSE) {
System.err.println("Using existing value of: " +
tmpRootPropName + "=" + tmpRootPropValue);
}
tmpRootDir = new File(tmpBaseDir, tmpRootPropValue);
if (DEBUG) {
System.err.println("tmpRootDir = " + tmpRootDir.getAbsolutePath());
}
if (!tmpRootDir.isDirectory()) {
throw new IOException("Cannot access " + tmpRootDir);
}
}
}
}
/**
* Called by the Reaper thread to delete old temp directories
* Only one of these threads will run per JVM invocation.
*/
private static void deleteOldTempDirs() {
if (VERBOSE) {
System.err.println("*** Reaper: deleteOldTempDirs in " +
tmpBaseDir.getAbsolutePath());
}
// enumerate list of jnl*.lck files, ignore our own jlnNNNN file
final String ourLockFile = tmpRootPropValue + ".lck";
FilenameFilter lckFilter = new FilenameFilter() {
/* @Override */
public boolean accept(File dir, String name) {
return name.endsWith(".lck") && !name.equals(ourLockFile);
}
};
// For each file .lck in the list we will first try to lock
// .tmp if that succeeds then we will try to lock .lck
// (which should always succeed unless there is a problem). If we can
// get the lock on both files, then it must be an old installation, and
// we will delete it.
String[] fileNames = tmpBaseDir.list(lckFilter);
if (fileNames != null) {
for (int i = 0; i < fileNames.length; i++) {
String lckFileName = fileNames[i];
String tmpDirName = lckFileName.substring(0, lckFileName.lastIndexOf(".lck"));
String tmpFileName = tmpDirName + ".tmp";
File lckFile = new File(tmpBaseDir, lckFileName);
File tmpFile = new File(tmpBaseDir, tmpFileName);
File tmpDir = new File(tmpBaseDir, tmpDirName);
if (lckFile.exists() && tmpFile.exists() && tmpDir.isDirectory()) {
FileOutputStream tmpOut = null;
FileChannel tmpChannel = null;
FileLock tmpLock = null;
try {
tmpOut = new FileOutputStream(tmpFile);
tmpChannel = tmpOut.getChannel();
tmpLock = tmpChannel.tryLock();
} catch (Exception ex) {
// Ignore exceptions
if (DEBUG) {
ex.printStackTrace();
}
}
if (tmpLock != null) {
FileOutputStream lckOut = null;
FileChannel lckChannel = null;
FileLock lckLock = null;
try {
lckOut = new FileOutputStream(lckFile);
lckChannel = lckOut.getChannel();
lckLock = lckChannel.tryLock();
} catch (Exception ex) {
if (DEBUG) {
ex.printStackTrace();
}
}
if (lckLock != null) {
// Recursively remove the old tmpDir and all of
// its contents
removeAll(tmpDir);
// Close the streams and delete the .lck and .tmp
// files. Note that there is a slight race condition
// in that another process could open a stream at
// the same time we are trying to delete it, which will
// prevent deletion, but we won't worry about it, since
// the worst that will happen is we might have an
// occasional 0-byte .lck or .tmp file left around
try {
lckOut.close();
} catch (IOException ex) {
}
lckFile.delete();
try {
tmpOut.close();
} catch (IOException ex) {
}
tmpFile.delete();
} else {
try {
// Close the file and channel for the *.lck file
if (lckOut != null) {
lckOut.close();
}
// Close the file/channel and release the lock
// on the *.tmp file
tmpOut.close();
tmpLock.release();
} catch (IOException ex) {
if (DEBUG) {
ex.printStackTrace();
}
}
}
}
} else {
if (VERBOSE) {
System.err.println(" Skipping: " + tmpDir.getAbsolutePath());
}
}
}
}
}
/**
* Remove the specified file or directory. If "path" is a directory, then
* recursively remove all entries, then remove the directory itself.
*/
private static void removeAll(File path) {
if (VERBOSE) {
System.err.println("removeAll(" + path + ")");
}
if (path.isDirectory()) {
// Recursively remove all files/directories in this directory
File[] list = path.listFiles();
if (list != null) {
for (int i = 0; i < list.length; i++) {
removeAll(list[i]);
}
}
}
path.delete();
}
/**
* This method is executed from outside the Event Dispatch Thread. It
* initializes, downloads, and unpacks the required native libraries into
* the cache, and then starts the applet on the EDT.
*/
private void initAndStartApplet() {
// Parse the extension JNLP files and download the native resources
try {
initResources();
} catch (Exception ex) {
ex.printStackTrace();
displayError(toErrorString(ex));
return;
}
// Indicate that we are starting the applet
displayMessage("Starting applet " + subAppletDisplayName);
setProgress(0);
// Now schedule the starting of the subApplet on the EDT
SwingUtilities.invokeLater(new Runnable() {
public void run() {
// start the subapplet
startSubApplet();
}
});
}
/**
* Initializes, downloads, and extracts the native resources needed by this
* applet.
*/
private void initResources() throws IOException {
synchronized (JNLPAppletLauncher.class) {
if (firstApplet) {
// Save codeBase and archive parameter for assertion checking
codeBase = getCodeBase();
assert codeBase != null;
archive = getParameter("archive");
if (archive == null || archive.length() == 0) {
throw new IllegalArgumentException("Missing archive parameter");
}
// Initialize the collections of resources
jarFiles = new HashSet/**/();
nativeJars = new HashSet/**/();
nativeLibMap = new HashMap/**/();
} else {
// The following must hold for applets in the same ClassLoader
assert getCodeBase().equals(codeBase);
assert getParameter("archive").equals(archive);
}
int jnlpNumExt = -1;
String numParamString = getParameter("jnlpNumExtensions");
if (numParamString != null) {
try {
jnlpNumExt = Integer.parseInt(numParamString);
} catch (NumberFormatException ex) {
}
if (jnlpNumExt <= 0) {
throw new IllegalArgumentException("Missing or invalid jnlpNumExtensions parameter");
}
}
List/**/ urls = new ArrayList/**/();
for (int i = 1; i <= jnlpNumExt; i++) {
String paramName = "jnlpExtension" + i;
String urlString = getParameter(paramName);
if (urlString == null || urlString.length() == 0) {
throw new IllegalArgumentException("Missing " + paramName + " parameter");
}
URL url = new URL(urlString);
urls.add(url);
}
// If this is the first time, process the list of extensions and
// save the results. Otherwise, verify that the list of extensions
// is the same as the first applet.
if (firstApplet) {
jnlpExtensions = urls;
parseJNLPExtensions(urls);
if (VERBOSE) {
System.err.println();
System.err.println("All files successfully parsed");
printResources();
}
if (nativeJars.size() > 0) {
// Create the cache directory if not already created.
// Create the temporary directory that will hold a copy of
// the extracted native libraries, then copy each native
// library into the temp dir so we can call System.load().
createCacheDir();
createTmpDir();
// Download and validate the set of native jars, if the
// cache is out of date. Then extract the native DLLs,
// creating a list of native libraries to be loaded.
for (Iterator iter = nativeJars.iterator(); iter.hasNext(); ) {
URL url = (URL) iter.next();
processNativeJar(url);
}
}
// Set a system property that libraries can use to know when to call
// JNLPAppletLauncher.loadLibrary instead of System.loadLibrary
System.setProperty("sun.jnlp.applet.launcher", "true");
} else {
// Verify that the list of jnlpExtensions is the same as the
// first applet
if (!jnlpExtensions.equals(urls)) {
throw new IllegalArgumentException(
"jnlpExtension parameters do not match previously loaded applet");
}
}
firstApplet = false;
}
}
/**
* Detemine the cache directory location based on the codebase and archive
* tag. Create the cache directory if not already created.
*/
private void createCacheDir() throws IOException {
StringBuffer cacheBaseName = new StringBuffer();
cacheBaseName.append(System.getProperty("user.home")).append(File.separator).
append(".jnlp-applet").append(File.separator).
append("cache");
File cacheBaseDir = new File(cacheBaseName.toString());
if (VERBOSE) {
System.err.println("cacheBaseDir = " + cacheBaseDir.getAbsolutePath());
}
cacheDir = new File(cacheBaseDir, getCacheDirName());
if (VERBOSE) {
System.err.println("cacheDir = " + cacheDir.getAbsolutePath());
}
// Create cache directory and load native library
if (!cacheDir.isDirectory()) {
if (!cacheDir.mkdirs()) {
throw new IOException("Cannot create directory " + cacheDir);
}
}
assert cacheBaseDir.isDirectory();
}
/**
* Returns a directory name of the form: hostname/hash(codebase,archive)
*/
private String getCacheDirName() {
final String codeBasePath = getCodeBase().toExternalForm();
// Extract the host name; replace characters in the set ".:\[]" with "_"
int hostIdx1 = -1;
int hostIdx2 = -1;
String hostNameDir = "UNKNOWN";
hostIdx1 = codeBasePath.indexOf("://");
if (hostIdx1 >= 0) {
hostIdx1 += 3; // skip the "://"
// Verify that the character immediately following the "://"
// exists and is not a "/"
if (hostIdx1 < codeBasePath.length() &&
codeBasePath.charAt(hostIdx1) != '/') {
hostIdx2 = codeBasePath.indexOf('/', hostIdx1);
if (hostIdx2 > hostIdx1) {
hostNameDir = codeBasePath.substring(hostIdx1, hostIdx2).
replace('.', '_').
replace(':', '_').
replace('\\', '_').
replace('[', '_').
replace(']', '_');
}
}
}
// Now concatenate the codebase and the list of jar files in the archive
// Separate them by an "out-of-band" character which cannot appear in
// either the codeBasePath or archive list.
StringBuffer key = new StringBuffer();
key.append(codeBasePath).
append("\n").
append(getParameter("archive"));
if (VERBOSE) {
System.err.println("key = " + key);
}
StringBuffer result = new StringBuffer();
result.append(hostNameDir).
append(File.separator).
append(sha1Hash(key.toString()));
if (VERBOSE) {
System.err.println("result = " + result);
}
return result.toString();
}
/**
* Produces a 40-byte SHA-1 hash of the input string.
*/
private static String sha1Hash(String str) {
MessageDigest sha1 = null;
try {
sha1 = MessageDigest.getInstance("SHA-1");
} catch (NoSuchAlgorithmException ex) {
throw new RuntimeException(ex);
}
byte[] digest = sha1.digest(str.getBytes());
if (digest == null || digest.length == 0) {
throw new RuntimeException("Error reading message digest");
}
StringBuffer res = new StringBuffer();
for (int i = 0; i < digest.length; i++) {
int val = (int)digest[i] & 0xFF;
if (val < 0x10) {
res.append("0");
}
res.append(Integer.toHexString(val));
}
return res.toString();
}
/**
* Create the temp directory in tmpRootDir. To do this, we create a temp
* file with a ".tmp" extension, and then create a directory of the
* same name but without the ".tmp". The temp file, directory, and all
* files in the directory will be reaped the next time this is started.
* We avoid deleteOnExit, because it doesn't work reliably.
*/
private void createTmpDir() throws IOException {
if (VERBOSE) {
System.err.println("---------------------------------------------------");
}
File tmpFile = File.createTempFile("jln", ".tmp", tmpRootDir);
String tmpFileName = tmpFile.getAbsolutePath();
String tmpDirName = tmpFileName.substring(0, tmpFileName.lastIndexOf(".tmp"));
nativeTmpDir = new File(tmpDirName);
if (VERBOSE) {
System.err.println("tmpFile = " + tmpFile.getAbsolutePath() +
" tmpDir = " + nativeTmpDir.getAbsolutePath());
}
if (!nativeTmpDir.mkdir()) {
throw new IOException("Cannot create " + nativeTmpDir);
}
}
/**
* Download, cache, verify, and unpack the specified native jar file.
* Before downloading, check the cached time stamp for the jar file
* against the server. If the time stamp is valid and matches that of the
* server, then we will use the locally cached files. This method assumes
* that cacheDir and nativeTmpDir both exist.
*
* An IOException is thrown if the files cannot loaded for some reason.
*/
private void processNativeJar(URL url) throws IOException {
assert cacheDir.isDirectory();
assert nativeTmpDir.isDirectory();
// 6618105: Map '\' to '/' prior to stripping off the path
String urlString = url.toExternalForm().replace('\\', '/');
String nativeFileName = urlString.substring(urlString.lastIndexOf("/") + 1);
File nativeFile = new File(cacheDir, nativeFileName);
// Make sure the file is not "." or ".."
if (nativeFile.isDirectory()) {
throw new IOException(nativeFile + " is a directory");
}
String tmpStr = nativeFileName;
int idx = nativeFileName.lastIndexOf(".");
if (idx > 0) {
tmpStr = nativeFileName.substring(0, idx);
}
String indexFileName = tmpStr + ".idx";
File indexFile = new File(cacheDir, indexFileName);
if (VERBOSE) {
System.err.println("nativeFile = " + nativeFile);
System.err.println("indexFile = " + indexFile);
}
displayMessage("Loading: " + nativeFileName);
setProgress(0);
URLConnection conn = url.openConnection();
conn.connect();
Map/*>*/ headerFields = conn.getHeaderFields();
if (VERBOSE) {
for (Iterator iter = headerFields.entrySet().iterator(); iter.hasNext(); ) {
Entry/*>*/ e = (Entry) iter.next();
for (Iterator iter2 = ((List/**/) e.getValue()).iterator(); iter2.hasNext(); ) {
String s = (String) iter2.next();
if (e.getKey() != null) {
System.err.print(e.getKey() + ": ");
}
System.err.print(s + " ");
}
System.err.println();
}
System.err.println();
}
// Validate the cache, download the jar if needed
// TODO: rather than synchronizing on System.out during cache validation,
// we should use a System property as a lock token (protected by
// System.out) so we don't hold a synchronized lock on System.out during
// a potentially long download operation.
synchronized (System.out) {
validateCache(conn, nativeFile, indexFile);
}
// Unpack the jar file
displayMessage("Unpacking: " + nativeFileName);
setProgress(0);
// Enumerate the jar file looking for native libraries
JarFile jarFile = new JarFile(nativeFile);
Set/**/ rootEntries = getRootEntries(jarFile);
Set/**/ nativeLibNames = getNativeLibNames(rootEntries);
// Validate certificates; throws exception upon validation error
validateCertificates(jarFile, rootEntries);
// Extract native libraries from the jar file
extractNativeLibs(jarFile, rootEntries, nativeLibNames);
if (VERBOSE) {
System.err.println();
}
}
// Validate the cached file. If the cached file is out of date or otherwise
// invalid, download the file and store the new time stamp.
// This method must be called with a global lock being held such that
// no other thread -- even in another class loader -- can executed this
// method concurrently.
private void validateCache(URLConnection conn,
File nativeFile,
File indexFile) throws IOException {
// Lock the cache directory
final String lckFileName = "cache.lck";
File lckFile = new File(cacheDir, lckFileName);
lckFile.createNewFile();
final FileOutputStream lckOut = new FileOutputStream(lckFile);
final FileChannel lckChannel = lckOut.getChannel();
final FileLock lckLock = lckChannel.lock();
try {
// Check to see whether the cached jar file exists and is valid
boolean valid = false;
long cachedTimeStamp = readTimeStamp(indexFile);
long urlTimeStamp = conn.getLastModified();
if (nativeFile.exists() &&
urlTimeStamp > 0 &&
urlTimeStamp == readTimeStamp(indexFile)) {
valid = true;
}
// Validate the cache, download the jar if needed
if (!valid) {
if (VERBOSE) {
System.err.println("processNativeJar: downloading " + nativeFile.getAbsolutePath());
}
indexFile.delete();
nativeFile.delete();
// Copy from URL to File
int len = conn.getContentLength();
if (VERBOSE) {
System.err.println("Content length = " + len + " bytes");
}
int totalNumBytes = copyURLToFile(conn, nativeFile);
if (DEBUG) {
System.err.println("processNativeJar: " + conn.getURL().toString() +
" --> " + nativeFile.getAbsolutePath() + " : " +
totalNumBytes + " bytes written");
}
// Write timestamp to index file.
writeTimeStamp(indexFile, urlTimeStamp);
} else {
if (DEBUG) {
System.err.println("processNativeJar: using previously cached: " +
nativeFile.getAbsolutePath());
}
}
} finally {
// Unlock the cache directory
lckLock.release();
}
}
private long readTimeStamp(File indexFile) {
try {
BufferedReader reader = new BufferedReader(new FileReader(indexFile));
try {
String str = reader.readLine();
return Long.parseLong(str);
} finally {
reader.close();
}
} catch (Exception ex) {
}
return -1;
}
private void writeTimeStamp(File indexFile, long timestamp) {
try {
BufferedWriter writer = new BufferedWriter(new FileWriter(indexFile));
try {
writer.write("" + timestamp + "\n");
writer.flush();
} finally {
writer.close();
}
} catch (Exception ex) {
displayError("Error writing time stamp for native libraries");
}
}
// Copy the specified URL to the specified File
private int copyURLToFile(URLConnection inConnection,
File outFile) throws IOException {
int totalNumBytes = 0;
InputStream in = new BufferedInputStream(inConnection.getInputStream());
try {
OutputStream out = new BufferedOutputStream(new FileOutputStream(outFile));
try {
totalNumBytes = copyStream(in, out, inConnection.getContentLength());
} finally {
out.close();
}
} finally {
in.close();
}
return totalNumBytes;
}
/**
* Copy the specified input stream to the specified output stream. The total
* number of bytes written is returned. If the close flag is set, both
* streams are closed upon completeion.
*/
private int copyStream(InputStream in, OutputStream out,
int totalNumBytes) throws IOException {
int numBytes = 0;
final int BUFFER_SIZE = 1000;
final float pctScale = 100.0f / (float)totalNumBytes;
byte[] buf = new byte[BUFFER_SIZE];
setProgress(0);
while (true) {
int count;
if ((count = in.read(buf)) == -1) {
break;
}
out.write(buf, 0, count);
numBytes += count;
if (totalNumBytes > 0) {
setProgress((int)Math.round((float)numBytes * pctScale));
}
}
setProgress(100);
return numBytes;
}
/**
* Enumerate the list of entries in the jar file and return those that are
* the root entries.
*/
private Set/**/ getRootEntries(JarFile jarFile) {
if (VERBOSE) {
System.err.println("getRootEntries:");
}
Set/**/ names = new HashSet/**/();
Enumeration/**/ entries = jarFile.entries();
while (entries.hasMoreElements()) {
JarEntry entry = (JarEntry) entries.nextElement();
String entryName = entry.getName();
if (VERBOSE) {
System.err.println("JarEntry : " + entryName);
}
// only look at entries with no "/"
if (entryName.indexOf('/') == -1 &&
entryName.indexOf(File.separatorChar) == -1) {
names.add(entryName);
}
}
return names;
}
/**
* Filter the root entries in the jar file and return those that
* are native library names.
*/
private Set/**/ getNativeLibNames(Set/**/ entryNames) {
if (VERBOSE) {
System.err.println("getNativeLibNames:");
}
Set/**/ names = new HashSet/**/();
for (Iterator iter = entryNames.iterator(); iter.hasNext(); ) {
String name = (String) iter.next();
String lowerCaseName = name.toLowerCase();
// Match entries with correct prefix and suffix (ignoring case)
if (lowerCaseName.startsWith(nativePrefix) &&
lowerCaseName.endsWith(nativeSuffix)) {
names.add(name);
}
}
return names;
}
/**
* Validate the certificates for each native Lib in the jar file.
* Throws an IOException if any certificate is not valid.
*/
private void validateCertificates(JarFile jarFile,
Set/**/ nativeLibNames) throws IOException {
if (DEBUG) {
System.err.println("validateCertificates:");
}
byte[] buf = new byte[1000];
Enumeration/**/ entries = jarFile.entries();
while (entries.hasMoreElements()) {
JarEntry entry = (JarEntry) entries.nextElement();
String entryName = entry.getName();
if (VERBOSE) {
System.err.println("JarEntry : " + entryName);
}
if (nativeLibNames.contains(entryName)) {
if (DEBUG) {
System.err.println("VALIDATE: " + entryName);
}
if (!checkNativeCertificates(jarFile, entry, buf)) {
throw new IOException("Cannot validate certificate for " + entryName);
}
}
}
}
/**
* Check the native certificates with the ones in the jar file containing the
* certificates for the JNLPAppletLauncher class (all must match).
*/
private boolean checkNativeCertificates(JarFile jar, JarEntry entry,
byte[] buf) throws IOException {
// API states that we must read all of the data from the entry's
// InputStream in order to be able to get its certificates
InputStream is = jar.getInputStream(entry);
int totalLength = (int) entry.getSize();
int len;
while ((len = is.read(buf)) > 0) {
}
is.close();
// locate JNLPAppletLauncher certificates
Certificate[] appletLauncherCerts = JNLPAppletLauncher.class.getProtectionDomain().
getCodeSource().getCertificates();
if (appletLauncherCerts == null || appletLauncherCerts.length == 0) {
throw new IOException("Cannot find certificates for JNLPAppletLauncher class");
}
// Get the certificates for the JAR entry
Certificate[] nativeCerts = entry.getCertificates();
if (nativeCerts == null || nativeCerts.length == 0) {
return false;
}
int checked = 0;
for (int i = 0; i < appletLauncherCerts.length; i++) {
for (int j = 0; j < nativeCerts.length; j++) {
if (nativeCerts[j].equals(appletLauncherCerts[i])){
checked++;
break;
}
}
}
return (checked == appletLauncherCerts.length);
}
/**
* Extract the specified set of native libraries in the given jar file.
*/
private void extractNativeLibs(JarFile jarFile,
Set/**/ rootEntries,
Set/**/ nativeLibNames) throws IOException {
if (DEBUG) {
System.err.println("extractNativeLibs:");
}
Enumeration/**/ entries = jarFile.entries();
while (entries.hasMoreElements()) {
JarEntry entry = (JarEntry) entries.nextElement();
String entryName = entry.getName();
if (VERBOSE) {
System.err.println("JarEntry : " + entryName);
}
// In order to be compatible with Java Web Start, we need
// to extract all root entries from the jar file. However,
// we only allow direct loading of the previously
// discovered native library names.
if (rootEntries.contains(entryName)) {
// strip prefix & suffix
String libName = entryName.substring(nativePrefix.length(),
entryName.length() - nativeSuffix.length());
if (DEBUG) {
System.err.println("EXTRACT: " + entryName + "(" + libName + ")");
}
File nativeLib = new File(nativeTmpDir, entryName);
InputStream in = new BufferedInputStream(jarFile.getInputStream(entry));
OutputStream out = new BufferedOutputStream(new FileOutputStream(nativeLib));
int numBytesWritten = copyStream(in, out, -1);
in.close();
out.close();
if (nativeLibNames.contains(entryName)) {
nativeLibMap.put(libName, nativeLib.getAbsolutePath());
}
}
}
}
/**
* The true start of the sub applet (invoked in the EDT)
*/
private void startSubApplet() {
try {
subApplet = (Applet)
Class.forName(subAppletClassName,
true,
Thread.currentThread().getContextClassLoader()).newInstance();
subApplet.setStub(new AppletStubProxy());
} catch (ClassNotFoundException ex) {
ex.printStackTrace();
displayError("Class not found: " + subAppletClassName);
return;
} catch (Exception ex) {
ex.printStackTrace();
displayError("Unable to start " + subAppletDisplayName);
return;
}
add(subApplet, BorderLayout.CENTER);
try {
subApplet.init();
remove(loaderPanel);
validate();
checkNoDDrawAndUpdateDeploymentProperties();
subApplet.start();
appletStarted = true;
} catch (Exception ex) {
ex.printStackTrace();
}
}
/**
* Method called by an extension such as JOGL or Java 3D to load the
* specified library. Applications and applets should not call this method.
*
* @param libraryName name of the library to be loaded
*
* @throws SecurityException if the caller does not have permission to
* call System.load
*/
public static void loadLibrary(String libraryName) {
if (VERBOSE) {
System.err.println("-----------");
Thread.dumpStack();
}
if (DEBUG) {
System.err.println("JNLPAppletLauncher.loadLibrary(\"" + libraryName + "\")");
}
String fullLibraryName = (String) nativeLibMap.get(libraryName);
if (fullLibraryName == null) {
// Throw UnsatisfiedLinkError to try to match behavior of System.loadLibrary()
throw new UnsatisfiedLinkError(libraryName);
}
if (DEBUG) {
System.err.println(" loading: " + fullLibraryName + "");
}
System.load(fullLibraryName);
}
public static void removeLibrary(String libraryName) {
String fullLibraryName = (String) nativeLibMap.get(libraryName);
if (fullLibraryName == null) {
return;
}
if (DEBUG) {
System.err.println(" removing: " + fullLibraryName + "");
}
new File(fullLibraryName).delete();
nativeLibMap.remove(libraryName);
}
private static String toErrorString(Throwable throwable) {
StringBuffer errStr = new StringBuffer(throwable.toString());
Throwable cause = throwable.getCause();
while (cause != null) {
errStr.append(": ").append(cause);
cause = cause.getCause();
}
return errStr.toString();
}
private void displayMessage(final String message) {
if (progressBar != null) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
progressBar.setString(message);
}
});
}
}
private void displayError(final String errorMessage) {
// Log message on Java console and display in applet progress bar
Logger.getLogger("global").severe(errorMessage);
if (progressBar != null) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
progressBar.setString("Error : " + errorMessage);
}
});
}
}
private void setProgress(final int value) {
if (progressBar != null) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
progressBar.setValue(value);
}
});
}
}
private void initLoaderLayout() {
setLayout(new BorderLayout());
loaderPanel = new JPanel(new BorderLayout());
if (getBooleanParameter("progressbar")) {
progressBar = new JProgressBar(0, 100);
progressBar.setBorderPainted(true);
progressBar.setStringPainted(true);
progressBar.setString("Loading...");
}
boolean includeImage = false;
ImageIcon image = null;
if (subAppletImageURL != null) {
image = new ImageIcon(subAppletImageURL);
includeImage = true;
}
add(loaderPanel, BorderLayout.SOUTH);
if (includeImage) {
loaderPanel.add(new JLabel(image), BorderLayout.CENTER);
if (progressBar != null) {
loaderPanel.add(progressBar, BorderLayout.SOUTH);
}
} else {
if (progressBar != null) {
loaderPanel.add(progressBar, BorderLayout.CENTER);
}
}
}
private void parseJNLPExtensions(List/**/ urls) throws IOException {
for (Iterator iter = urls.iterator(); iter.hasNext(); ) {
URL url = (URL) iter.next();
JNLPParser parser = new JNLPParser(this, url);
parser.parse();
}
}
private void addJarFile(URL jarFile) {
jarFiles.add(jarFile);
}
private void addNativeJar(URL nativeJar) {
nativeJars.add(nativeJar);
}
/*
* Debug method to print out resources from the JNLP file
*/
private static void printResources() {
System.err.println(" Resources:");
System.err.println(" Class Jars:");
doPrint(jarFiles);
System.err.println();
System.err.println(" Native Jars:");
doPrint(nativeJars);
}
/*
* Debug method to print out resources from the JNLP file
*/
private static void doPrint(Collection/**/ urls) {
for (Iterator iter = urls.iterator(); iter.hasNext(); ) {
URL url = (URL) iter.next();
String urlString = url.toExternalForm();
System.err.println(" " + urlString);
}
}
// Static initializer for JNLPAppletLauncher
static {
System.err.println("JNLPAppletLauncher: static initializer");
String systemOsName = System.getProperty("os.name").toLowerCase();
if (systemOsName.startsWith("mac")) {
// Mac OS X
nativePrefix = "lib";
nativeSuffix = ".jnilib";
} else if (systemOsName.startsWith("windows")) {
// Microsoft Windows
nativePrefix = "";
nativeSuffix = ".dll";
} else {
// Unix of some variety
nativePrefix = "lib";
nativeSuffix = ".so";
}
if (DEBUG) {
System.err.println("os.name = " + systemOsName);
System.err.println("nativePrefix = " + nativePrefix + " nativeSuffix = " + nativeSuffix);
}
// Create / initialize the temp root directory, starting the Reaper
// thread to reclaim old installations if necessary. If we get an
// exception, set an error code so we don't try to start the applets.
try {
initTmpRoot();
} catch (Exception ex) {
ex.printStackTrace();
staticInitError = true;
}
}
private static final String _javaVersionProperty =
System.getProperty("java.version");
private static final boolean _atLeast13 =
(!_javaVersionProperty.startsWith("1.2"));
private static final boolean _atLeast14 = (_atLeast13 &&
!_javaVersionProperty.startsWith("1.3"));
private static final boolean _atLeast15 = (_atLeast14 &&
!_javaVersionProperty.startsWith("1.4"));
private static final String vendorURL =
System.getProperty("java.vendor.url");
private static final String sunVendorURL = "http://java.sun.com/";
private static boolean isJavaVersionAtLeast15() {
return _atLeast15;
}
private static boolean isJavaVersion142Family() {
return _javaVersionProperty.startsWith("1.4.2");
}
// -----------------------------------------------------------------------
/**
* Proxy implementation class of AppletStub. Delegates to the
* JNLPAppletLauncher class.
*/
private class AppletStubProxy implements AppletStub {
public boolean isActive() {
return JNLPAppletLauncher.this.isActive();
}
public URL getDocumentBase() {
return JNLPAppletLauncher.this.getDocumentBase();
}
public URL getCodeBase() {
return JNLPAppletLauncher.this.getCodeBase();
}
public String getParameter(String name) {
return JNLPAppletLauncher.this.getParameter(name);
}
public AppletContext getAppletContext() {
return JNLPAppletLauncher.this.getAppletContext();
}
public void appletResize(int width, int height) {
JNLPAppletLauncher.this.resize(width, height);
}
}
/**
* Parser class for JNLP files for the applet launcher. For simplicitly, we
* assume that everything of interest is within a single "jnlp" tag and
* that the "resources" tags are not nested.
*/
private static class JNLPParser {
// The following represents the various states we can be in
private static final int INITIAL = 1;
private static final int STARTED = 2;
private static final int IN_JNLP = 3;
private static final int IN_RESOURCES = 4;
private static final int SKIP_ELEMENT = 5;
private static SAXParserFactory factory;
private static String systemOsName;
private static String systemOsArch;
private JNLPAppletLauncher launcher;
private URL url;
private InputStream in;
private JNLPHandler handler;
private String codebase = "";
private int state = INITIAL;
private int prevState = INITIAL;
private int depth = 0;
private int skipDepth = -1;
private JNLPParser(JNLPAppletLauncher launcher, URL url) throws IOException {
this.launcher = launcher;
this.url = url;
this.handler = new JNLPHandler();
}
private void parse() throws IOException {
if (VERBOSE) {
System.err.println("JNLPParser: " + url.toString());
}
try {
URLConnection conn = url.openConnection();
conn.connect();
InputStream in = new BufferedInputStream(conn.getInputStream());
SAXParser parser = factory.newSAXParser();
parser.parse(in, handler);
in.close();
} catch (ParserConfigurationException ex) {
throw (IOException) new IOException().initCause(ex);
} catch (SAXException ex) {
throw (IOException) new IOException().initCause(ex);
}
}
// Static initializer for JNLPParser
static {
if (sunVendorURL.equals(vendorURL)) {
// set the "javax.xml.parsers.SAXParserFactory" to the default
// implementation, so we won't pull down all the JARs listed
// in the archive tag to look for a SAXParserFactory implementation
if (isJavaVersionAtLeast15()) {
System.setProperty("javax.xml.parsers.SAXParserFactory",
"com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl");
} else if (isJavaVersion142Family()) {
System.setProperty("javax.xml.parsers.SAXParserFactory",
"org.apache.crimson.jaxp.SAXParserFactoryImpl");
}
}
factory = SAXParserFactory.newInstance();
systemOsName = System.getProperty("os.name").toLowerCase();
systemOsArch = System.getProperty("os.arch").toLowerCase();
if (DEBUG) {
System.err.println("os.name = " + systemOsName);
System.err.println("os.arch = " + systemOsArch);
}
}
/**
* Handler class containing callback methods for the parser.
*/
private class JNLPHandler extends DefaultHandler {
JNLPHandler() {
}
/* @Override */
public void startDocument() {
if (VERBOSE) {
System.err.println("START DOCUMENT: " + url);
}
state = STARTED;
if (VERBOSE) {
System.err.println("state = " + state);
}
}
/* @Override */
public void endDocument() {
if (VERBOSE) {
System.err.println("END DOCUMENT");
}
state = INITIAL;
if (VERBOSE) {
System.err.println("state = " + state);
}
}
/* @Override */
public void startElement(String uri,
String localName,
String qName,
Attributes attributes) throws SAXException {
++depth;
if (VERBOSE) {
System.err.println("<" + qName + ">" + " : depth=" + depth);
for (int i = 0; i < attributes.getLength(); i++) {
System.err.println(" [" + i + "] " + attributes.getQName(i) +
" = \"" + attributes.getValue(i) + "\"");
}
}
// Parse qName based on current state
switch (state) {
case STARTED:
if (qName.equals("jnlp")) {
state = IN_JNLP;
codebase = attributes.getValue("codebase");
if (codebase == null) {
throw new SAXException(" unable to determine codebase");
}
if (codebase.lastIndexOf('/') != codebase.length()-1) {
codebase = codebase + "/";
}
if (VERBOSE) {
System.err.println("JNLP : codebase=" + codebase);
}
if (VERBOSE) {
System.err.println("state = " + state);
}
} else if (qName.equals("resources")) {
throw new SAXException(" tag not within tag");
}
// Ignore all other tags
break;
case IN_JNLP:
if (qName.equals("jnlp")) {
throw new SAXException("Nested tags");
} else if (qName.equals("resources")) {
String osName = attributes.getValue("os");
String osArch = attributes.getValue("arch");
if ((osName == null || systemOsName.startsWith(osName.toLowerCase())) &&
(osArch == null || systemOsArch.startsWith(osArch.toLowerCase()))) {
if (VERBOSE) {
System.err.println("Loading resources : os=" + osName + " arch=" + osArch);
}
state = IN_RESOURCES;
} else {
prevState = state;
skipDepth = depth - 1;
state = SKIP_ELEMENT;
}
if (VERBOSE) {
System.err.println("Resources : os=" + osName + " arch=" + osArch + " state = " + state);
}
}
break;
case IN_RESOURCES:
try {
if (qName.equals("jnlp")) {
throw new SAXException("Nested tags");
} else if (qName.equals("resources")) {
throw new SAXException("Nested tags");
} else if (qName.equals("jar")) {
String str = attributes.getValue("href");
if (str == null || str.length() == 0) {
throw new SAXException(" tag missing href attribute");
}
String jarFileStr = codebase + str;
if (VERBOSE) {
System.err.println("Jar: " + jarFileStr);
}
URL jarFile = new URL(jarFileStr);
launcher.addJarFile(jarFile);
} else if (qName.equals("nativelib")) {
String str = attributes.getValue("href");
if (str == null || str.length() == 0) {
throw new SAXException(" tag missing href attribute");
}
String nativeLibStr = codebase + str;
if (VERBOSE) {
System.err.println("Native Lib: " + nativeLibStr);
}
URL nativeLib = new URL(nativeLibStr);
launcher.addNativeJar(nativeLib);
} else if (qName.equals("extension")) {
String extensionURLString = attributes.getValue("href");
if (extensionURLString == null || extensionURLString.length() == 0) {
throw new SAXException(" tag missing href attribute");
}
if (VERBOSE) {
System.err.println("Extension: " + extensionURLString);
}
URL extensionURL = new URL(extensionURLString);
JNLPParser parser = new JNLPParser(launcher, extensionURL);
parser.parse();
} else {
prevState = state;
skipDepth = depth - 1;
state = SKIP_ELEMENT;
if (VERBOSE) {
System.err.println("state = " + state);
}
}
} catch (IOException ex) {
throw (SAXException) new SAXException(ex).initCause(ex);
}
break;
case INITIAL:
case SKIP_ELEMENT:
default:
break;
}
}
/* @Override */
public void endElement(String uri,
String localName,
String qName) throws SAXException {
--depth;
if (VERBOSE) {
System.err.println("");
}
// Parse qName based on current state
switch (state) {
case IN_JNLP:
if (qName.equals("jnlp")) {
state = STARTED;
if (VERBOSE) {
System.err.println("state = " + state);
}
}
break;
case IN_RESOURCES:
if (qName.equals("resources")) {
state = IN_JNLP;
if (VERBOSE) {
System.err.println("state = " + state);
}
}
break;
case SKIP_ELEMENT:
if (depth == skipDepth) {
state = prevState;
skipDepth = -1;
if (VERBOSE) {
System.err.println("state = " + state);
}
}
break;
case INITIAL:
case STARTED:
default:
break;
}
}
}
}
//----------------------------------------------------------------------
// Helper routines for adding -Dsun.java2d.noddraw=true to deployment.properties
// Get a "boolean" parameter
private boolean getBooleanParameter(String parameterName) {
return Boolean.valueOf(getParameter(parameterName)).booleanValue();
}
private String getDeploymentPropsDir() {
final String osName = System.getProperty("os.name").toLowerCase();
StringBuffer result = new StringBuffer();
result.append(System.getProperty("user.home"));
if (osName.startsWith("windows")) {
if (osName.indexOf("vista") != -1) {
result.append(File.separator).append("AppData").
append(File.separator).append("LocalLow");
} else {
result.append(File.separator).append("Application Data");
}
result.append(File.separator).append("Sun").
append(File.separator).append("Java").
append(File.separator).append("Deployment");
} else if (osName.startsWith("mac")) {
result.append(File.separator).append("Library").
append(File.separator).append("Caches").
append(File.separator).append("Java");
} else {
result.append(File.separator).append(".java").
append(File.separator).append("deployment");
}
return result.toString();
}
private void checkNoDDrawAndUpdateDeploymentProperties() {
if (!getBooleanParameter("noddraw.check"))
return;
if (System.getProperty("os.name").toLowerCase().startsWith("windows") &&
!"true".equalsIgnoreCase(System.getProperty("sun.java2d.noddraw"))) {
if (!SwingUtilities.isEventDispatchThread()) {
try {
SwingUtilities.invokeAndWait(new Runnable() {
public void run() {
updateDeploymentPropertiesImpl();
}
});
} catch (Exception e) {
}
} else {
updateDeploymentPropertiesImpl();
}
}
}
private void updateDeploymentPropertiesImpl() {
String userHome = System.getProperty("user.home");
File dontAskFile = new File(userHome + File.separator + ".jnlp-applet" +
File.separator + DONT_ASK);
if (dontAskFile.exists())
return; // User asked us not to prompt again
int option = 0;
if (!getBooleanParameter("noddraw.check.silent")) {
option = JOptionPane.showOptionDialog(null,
"For best robustness of OpenGL applets on Windows,\n" +
"we recommend disabling Java2D's use of DirectDraw.\n" +
"This setting will affect all applets, but is unlikely\n" +
"to slow other applets down significantly. May we update\n" +
"your deployment.properties to turn off DirectDraw for\n" +
"applets? You can change this back later if necessary\n" +
"using the Java Control Panel, Java tab, under Java\n" +
"Applet Runtime Settings.",
"Update deployment.properties?",
JOptionPane.YES_NO_CANCEL_OPTION,
JOptionPane.QUESTION_MESSAGE,
null,
new Object[] {
"Yes",
"No",
"No, Don't Ask Again"
},
"Yes");
}
if (option < 0 ||
option == 1)
return; // No
if (option == 2) {
try {
dontAskFile.createNewFile();
} catch (IOException e) {
}
return; // No, Don't Ask Again
}
try {
// Must update deployment.properties
File propsDir = new File(getDeploymentPropsDir());
if (!propsDir.exists()) {
// Don't know what's going on or how to set this permanently
return;
}
File propsFile = new File(propsDir, "deployment.properties");
if (!propsFile.exists()) {
// Don't know what's going on or how to set this permanently
return;
}
Properties props = new Properties();
InputStream input = new BufferedInputStream(new FileInputStream(propsFile));
props.load(input);
input.close();
// Search through the keys looking for JRE versions
Set/**/ jreVersions = new HashSet/**/();
for (Iterator/**/ iter = props.keySet().iterator(); iter.hasNext(); ) {
String key = (String) iter.next();
if (key.startsWith(JRE_PREFIX)) {
int idx = key.lastIndexOf(".");
if (idx >= 0 && idx > JRE_PREFIX.length()) {
String jreVersion = key.substring(JRE_PREFIX.length(), idx);
jreVersions.add(jreVersion);
}
}
}
// Make sure the currently-running JRE shows up in this set to
// avoid repeated displays of the dialog. It might not in some
// upgrade scenarios where there was a pre-existing
// deployment.properties and the new Java Control Panel hasn't
// been run yet.
jreVersions.add(System.getProperty("java.version"));
// OK, now that we know all JRE versions covered by the
// deployment.properties, check out the args for each and update
// them
for (Iterator/**/ iter = jreVersions.iterator(); iter.hasNext(); ) {
String version = (String) iter.next();
String argKey = JRE_PREFIX + version + ".args";
String argVal = props.getProperty(argKey);
if (argVal == null) {
argVal = NODDRAW_PROP;
} else if (argVal.indexOf(NODDRAW_PROP) < 0) {
argVal = argVal + " " + NODDRAW_PROP;
}
props.setProperty(argKey, argVal);
}
OutputStream output = new BufferedOutputStream(new FileOutputStream(propsFile));
props.store(output, null);
output.close();
if (!getBooleanParameter("noddraw.check.silent")) {
// Tell user we're done
JOptionPane.showMessageDialog(null,
"For best robustness, we recommend you now exit and\n" +
"restart your web browser. (Note: clicking \"OK\" will\n" +
"not exit your browser.)",
"Browser Restart Recommended",
JOptionPane.INFORMATION_MESSAGE);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}