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Je fais la manipulation bytecode dans Java, mais il est fait sur un fichier JAR externe, en cours d'exécution. Pour cette raison, j'utilise l'API attach.DLL de la bibliothèque join ne peut pas être chargé par l'application
Mon problème actuel est que l'API attacher ne peut pas charger une DLL que j'ai dans un dossier distinct. J'ai proviously eu des problèmes avec l'emplacement de dossier mais j'ai fixé ceux et ainsi je sais qu'il peut voir le dossier, il ne peut tout simplement pas le charger.
Ma trace de la pile est la suivante:
java.lang.UnsatisfiedLinkError: Can't load library: C:\Users\Jamie\Desktop\Test Rainbow 51\Rainbow Tester\plugins_mod\Natives\64\windows\attach.dll
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.load0(Unknown Source)
at java.lang.System.load(Unknown Source)
at RainbowBans.MyPlugin.getAttachProvider(MyPlugin.java:299)
at RainbowBans.MyPlugin.onStartup(MyPlugin.java:96)
at joebkt._JoeUtils.LoadPlugins(_JoeUtils.java:2415)
at joebkt._JoeUtils.Startup(_JoeUtils.java:2502)
at joebkt.DedicatedServer.startServerConsoleHandler(DedicatedServer.java:44)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:483)
at java.lang.Thread.run(Unknown Source)
Et voici mon code source:
package RainbowBans;
//Just a few imports
import java.awt.Desktop;
import java.awt.event.*;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
//Required when used to start premain by command line.
//import java.lang.ProcessBuilder.Redirect;
import java.net.Socket;
import java.net.SocketAddress;
import java.net.URL;
import java.util.Timer;
import java.util.TimerTask;
import javax.swing.*;
import sun.tools.attach.BsdAttachProvider;
import sun.tools.attach.LinuxAttachProvider;
import sun.tools.attach.SolarisAttachProvider;
import sun.tools.attach.WindowsAttachProvider;
import net.minecraft.server.MinecraftServer;
import com.mojang.authlib.GameProfile;
import com.sun.tools.attach.AgentInitializationException;
import com.sun.tools.attach.AgentLoadException;
import com.sun.tools.attach.AttachNotSupportedException;
import com.sun.tools.attach.VirtualMachine;
import com.sun.tools.attach.spi.AttachProvider;
import joebkt.BannedPlayers;
import joebkt.CmdBan;
import joebkt.CmdKick;
import joebkt.PlayerList;
import joebkt._PermMgr;
import PluginReference.*;
public class MyPlugin extends PluginBase{
public static MC_Server server = null;
String pluginDir = "plugins_mod" + File.separatorChar;
String folderDir = pluginDir + "RainbowBans" + File.separatorChar;
String rainbowDir = RainbowBans.MyPlugin.class.getProtectionDomain().getCodeSource().getLocation().toExternalForm();
String OS = "Unknown!";
public void onStartup(MC_Server svr){
System.out.println("Plugin starting! Lets hope this works! :)");
System.out.println("plugins_mod folder located at:" + new File(pluginDir).getAbsolutePath());
System.out.println("RainbowBansTransAgent is located at: " + new File(pluginDir + "RainbowBansTransAgent.jar").getAbsolutePath());
server = svr;
System.out.println("Creating files now!");
File file = new File(folderDir);
if(file.isDirectory()) System.out.println("Directory already exists!");
else {
System.out.println("Creating plugin directory");
file.mkdir();
}
File errorfile = new File(folderDir + File.separatorChar + "Rainbowbanserrors.txt");
if(errorfile.isFile()) System.out.println("File errorfile already exists");
else
try {
System.out.println("Creating stack trace file!");
errorfile.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
File banfile = new File(folderDir + File.separatorChar + "banmessage.txt");
if(banfile.isFile()) System.out.println("Banfile already exists!");
else
try {
banfile.createNewFile();
BufferedWriter writer = new BufferedWriter(new FileWriter(banfile));
writer.write("You are banned.");
writer.close();
} catch (IOException e) {
e.printStackTrace();
}
File logfile = new File(folderDir + File.separatorChar + "Rainbowbanstransagentlog.txt");
if(logfile.isFile()) System.out.println("Logfile already exists!");
else try{
logfile.createNewFile();
}catch(IOException e){
e.printStackTrace();
}
JFrame frame = startDialog();
JMenuBar menu = createMenu();
frame.setJMenuBar(menu);
VirtualMachine vm;
try {
AttachProvider.setAttachProvider(getAttachProvider());
vm = VirtualMachine.attach(String.valueOf(Thread.currentThread().getId()));
String realArch = architecture();
if(realArch == "64"){
System.setProperty("java.library.path", new File(folderDir + "Natives" + File.separator + "64" + File.separator + OS + File.separator).getAbsolutePath());
}else if(realArch == "32"){
System.setProperty("java.library.path", new File(folderDir + "Natives" + File.separator + "32" + File.separator + OS + File.separator).getAbsolutePath());
}
vm.loadAgent(new File(".").getAbsolutePath());
} catch (AttachNotSupportedException | IOException | AgentLoadException | AgentInitializationException e) {
e.printStackTrace();
}
//Before using the attach agent, this is how I started the premain in the external JAR (RainbowBansTransAgent.jar)//
/*File transagent = new File(pluginDir + File.separatorChar + "RainbowBansTransAgent.jar");
ProcessBuilder pb = new ProcessBuilder("java", "-javaagent:" + transagent.getAbsolutePath(), "RainbowBansTransAgent/TransAgent");
pb.redirectError(Redirect.appendTo(errorfile));
pb.redirectOutput(Redirect.appendTo(logfile));
try{
pb.start();
}catch(IOException e){
e.printStackTrace();
}
*/
}
private JMenuBar createMenu() {
JMenuBar menu = new JMenuBar();
JMenuItem i = new JMenuItem("See message");
i.addActionListener(getActionListenerForMessage(i));
menu.add(i);
JMenuItem w = new JMenuItem("Go to project page");
w.addActionListener(getActionListenerForWebsites("http://www.project- rainbow.org/site/index.php?board=9.0"));
menu.add(w);
JMenuItem k = new JMenuItem("Go to download page");
k.addActionListener(getActionListenerForWebsites("http://www.project- rainbow.org/site/index.php?action=downloads;cat=3"));
menu.add(k);
return menu;
}
//I got the code from http://stackoverflow.com/questions/10967451/open-a-link-in-browser-with-java-button
private void openWebsite(String url){
Desktop desktop = Desktop.isDesktopSupported() ? Desktop.getDesktop() : null;
if (desktop != null && desktop.isSupported(Desktop.Action.BROWSE)) {
try {
desktop.browse(new URL(url).toURI());
} catch (Exception e) {
e.printStackTrace();
}
}
}
private ActionListener getActionListenerForWebsites(String url) {
ActionListener al = new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
openWebsite(url);
}
};
return al;
}
private ActionListener getActionListenerForMessage(JMenuItem i) {
ActionListener al = new ActionListener(){
@Override
public void actionPerformed(ActionEvent e) {
try {
BufferedReader reader = new BufferedReader(new FileReader(new File(folderDir + File.separatorChar + "banmessage.txt")));
String message = reader.readLine();
i.setText(message);
Timer timer = new Timer();
timer.schedule(getTimerTask(i), 5000);
reader.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
};
return al;
}
private TimerTask getTimerTask(JMenuItem i) {
TimerTask task = new TimerTask(){
@Override
public void run() {
i.setText("See message");
}
};
return task;
}
private JFrame startDialog() {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JOptionPane.YES_NO_OPTION);
frame.setVisible(true);
frame.setSize(800, 600);
frame.setAlwaysOnTop(false);
frame.setBackground(java.awt.Color.yellow);
return frame;
}
//Copied from CodeCrafter's MultiWorld project.
private AttachProvider getAttachProvider() {
String os = System.getProperty("os.name").toLowerCase();
if (os.contains("win") && !os.contains("darwin")) {
OS = "windows";
if(architecture() == "64")System.load(new File(pluginDir + "Natives" + File.separator + "64" + File.separator + "windows" + File.separator + "attach.dll").getAbsolutePath());
else if (architecture() == "32")System.load(new File(pluginDir + "Natives" + File.separator + "32" + File.separator + "windows" + File.separator + "attach.dll").getAbsolutePath());
else{}
return new WindowsAttachProvider();
}
else if ((os.contains("nix")) || (os.contains("nux")) || (os.indexOf("aix") > 0)) {
OS = "linux";
if(architecture() == "64")System.load(new File(pluginDir + "Natives" + File.separator + "64" + File.separator + "linux" + File.separator + "libattach.so").getAbsolutePath());
else if(architecture() == "32") System.load(new File(pluginDir + "Natives" + File.separator + "64" + File.separator + "linux" + File.separator + "libattach.so").getAbsolutePath());
else{}
return new LinuxAttachProvider();
}
else if (os.contains("mac")) {
OS = "mac";
System.load(new File(pluginDir + "Natives" + File.separator + "64" + File.separator + "mac" + File.separator + "libattach.dylib").getAbsolutePath());
return new BsdAttachProvider();
}
else if (os.contains("sunos")) {
OS = "solaris";
if(architecture() == "64")System.load(new File(pluginDir + "Natives" + File.separator + "64" + File.separator + "solaris" + File.separator + "libattach.so").getAbsolutePath());
else if(architecture() == "32")System.load(new File(pluginDir + "Natives" + File.separator + "64" + File.separator + "solaris" + File.separator + "libattach.so").getAbsolutePath());
return new SolarisAttachProvider();
}
else{
return null;
}
}
//Copied from StackOverflow
private String architecture() {
String arch = System.getenv("PROCESSOR_ARCHITECTURE");
String wow64Arch = System.getenv("PROCESSOR_ARCHITEW6432");
String realArch = arch.endsWith("64")
|| wow64Arch != null && wow64Arch.endsWith("64")
? "64" : "32";
return realArch;
}
}
Vous pouvez examiner les dépendances de la DLL avec Dependeny Walker: http://www.dependencywalker.com/depends22_x64.zip –