1
En utilisant ASM, je remplace le code d'une méthode par une autre méthode. La méthode s'appelle "checkIfShouldDisconnect", et en utilisant le plugin BytecodeOutline, j'ai obtenu le code ASM pour le code source que je voulais transformer. Cependant, j'obtiens un ClassFormatError. Je crois que cela est dû au fait que mon bytecode n'est pas formaté correctement. Qu'est ce que j'ai mal fait?Lancement de MethodVisitor ClassFormatError
EDIT 1: Le but de mon code est d'éditer un fichier JAR externe au moment de l'exécution. Un plugin sur lequel je travaille, au démarrage, utilisera l'API attach pour démarrer mon agent (fichier JAR séparé). L'agent récupère alors la classe et remplace la méthode de la classe par une autre méthode. Dans le débogage précédent, j'ai imprimé le bytecode sur une console swing à travers un logger, et j'ai utilisé le vérificateur de classes d'ASM pour vérifier le code de la classe. Il est toujours actif, mais il ne me donne rien. Le ClassVisitor et MethodVisitor analysés par RBMethodVisitor n'est pas null
Le problème est que MethodVisitor tente d'insérer le code, n'a aucun problème mais ne laisse aucune erreur à l'exception de ClassFormatError qui ne me signale pas le problème avec le code.
Je vais coller mon MethodVisitor ici: RBMethodVisitor.java
package RainbowBansTransAgent;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
public class RBMethodVisitor extends MethodVisitor implements Opcodes{
ClassVisitor cv;
Logger logger;
public RBMethodVisitor(MethodVisitor mv, ClassVisitor cv) {
super(Opcodes.ASM5, mv);
this.mv = mv;
this.cv = cv;
logger = Logger.getLogger(false);
}
public void visitCode(){
logger.logString("overwriting checkIfShouldDisconnect method with new code");
mv = cv.visitMethod(ACC_PUBLIC, "checkIfShouldDisconnect", "(Ljava/net/SocketAddress;Lcom/mojang/authlib/GameProfile;)Ljava/lang/String;", null, null);
mv.visitCode();
Label l0 = new Label();
Label l1 = new Label();
Label l2 = new Label();
mv.visitTryCatchBlock(l0, l1, l2, "java/io/IOException");
Label l3 = new Label();
Label l4 = new Label();
Label l5 = new Label();
mv.visitTryCatchBlock(l3, l4, l5, "java/io/IOException");
Label l6 = new Label();
Label l7 = new Label();
Label l8 = new Label();
mv.visitTryCatchBlock(l6, l7, l8, "java/io/IOException");
Label l9 = new Label();
mv.visitLabel(l9);
mv.visitLineNumber(23, l9);
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "toString", "()Ljava/lang/String;", false);
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "toString", "()Ljava/lang/String;", false);
mv.visitIntInsn(BIPUSH, 47);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "indexOf", "(I)I", false);
mv.visitInsn(ICONST_1);
mv.visitInsn(IADD);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "substring", "(I)Ljava/lang/String;", false);
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "toString", "()Ljava/lang/String;", false);
mv.visitIntInsn(BIPUSH, 58);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "indexOf", "(I)I", false);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "substring", "(I)Ljava/lang/String;", false);
mv.visitVarInsn(ASTORE, 3);
Label l10 = new Label();
mv.visitLabel(l10);
mv.visitLineNumber(24, l10);
mv.visitTypeInsn(NEW, "java/io/File");
mv.visitInsn(DUP);
mv.visitLdcInsn("banned-players.json");
mv.visitMethodInsn(INVOKESPECIAL, "java/io/File", "<init>", "(Ljava/lang/String;)V", false);
mv.visitVarInsn(ASTORE, 4);
Label l11 = new Label();
mv.visitLabel(l11);
mv.visitLineNumber(25, l11);
mv.visitTypeInsn(NEW, "joebkt/BannedPlayers");
mv.visitInsn(DUP);
mv.visitVarInsn(ALOAD, 4);
mv.visitMethodInsn(INVOKESPECIAL, "joebkt/BannedPlayers", "<init>", "(Ljava/io/File;)V", false);
mv.visitVarInsn(ASTORE, 5);
Label l12 = new Label();
mv.visitLabel(l12);
mv.visitLineNumber(26, l12);
mv.visitTypeInsn(NEW, "java/util/concurrent/ConcurrentHashMap");
mv.visitInsn(DUP);
mv.visitMethodInsn(INVOKESPECIAL, "java/util/concurrent/ConcurrentHashMap", "<init>", "()V", false);
mv.visitVarInsn(ASTORE, 6);
Label l13 = new Label();
mv.visitLabel(l13);
mv.visitLineNumber(28, l13);
mv.visitFieldInsn(GETSTATIC, "joebkt/_JoeUtils", "DoReconnectDelay", "Z");
mv.visitJumpInsn(IFEQ, l0);
Label l14 = new Label();
mv.visitLabel(l14);
mv.visitLineNumber(30, l14);
mv.visitVarInsn(ALOAD, 2);
mv.visitMethodInsn(INVOKEVIRTUAL, "com/mojang/authlib/GameProfile", "getName", "()Ljava/lang/String;", false);
mv.visitVarInsn(ASTORE, 7);
Label l15 = new Label();
mv.visitLabel(l15);
mv.visitLineNumber(31, l15);
mv.visitMethodInsn(INVOKESTATIC, "java/lang/System", "currentTimeMillis", "()J", false);
mv.visitMethodInsn(INVOKESTATIC, "java/lang/Long", "valueOf", "(J)Ljava/lang/Long;", false);
mv.visitVarInsn(ASTORE, 8);
Label l16 = new Label();
mv.visitLabel(l16);
mv.visitLineNumber(32, l16);
mv.visitVarInsn(ALOAD, 6);
mv.visitVarInsn(ALOAD, 7);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/util/concurrent/ConcurrentHashMap", "get", "(Ljava/lang/Object;)Ljava/lang/Object;", false);
mv.visitTypeInsn(CHECKCAST, "java/lang/Long");
mv.visitVarInsn(ASTORE, 9);
Label l17 = new Label();
mv.visitLabel(l17);
mv.visitLineNumber(33, l17);
mv.visitVarInsn(ALOAD, 9);
Label l18 = new Label();
mv.visitJumpInsn(IFNULL, l18);
mv.visitVarInsn(ALOAD, 8);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Long", "longValue", "()J", false);
mv.visitVarInsn(ALOAD, 9);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Long", "longValue", "()J", false);
mv.visitInsn(LSUB);
mv.visitFieldInsn(GETSTATIC, "joebkt/_JoeUtils", "ReconnectDelaySeconds", "I");
mv.visitIntInsn(SIPUSH, 1000);
mv.visitInsn(IMUL);
mv.visitInsn(I2L);
mv.visitInsn(LCMP);
mv.visitJumpInsn(IFGE, l18);
Label l19 = new Label();
mv.visitLabel(l19);
mv.visitLineNumber(35, l19);
mv.visitFieldInsn(GETSTATIC, "joebkt/_JoeUtils", "DebugMode", "Z");
Label l20 = new Label();
mv.visitJumpInsn(IFEQ, l20);
Label l21 = new Label();
mv.visitLabel(l21);
mv.visitLineNumber(36, l21);
mv.visitLdcInsn("====== Delaying rejoin for ====== %s -- msDelta: %d ================");
mv.visitInsn(ICONST_2);
mv.visitTypeInsn(ANEWARRAY, "java/lang/Object");
mv.visitInsn(DUP);
mv.visitInsn(ICONST_0);
mv.visitVarInsn(ALOAD, 7);
mv.visitInsn(AASTORE);
mv.visitInsn(DUP);
mv.visitInsn(ICONST_1);
mv.visitVarInsn(ALOAD, 8);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Long", "longValue", "()J", false);
mv.visitVarInsn(ALOAD, 9);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Long", "longValue", "()J", false);
mv.visitInsn(LSUB);
mv.visitMethodInsn(INVOKESTATIC, "java/lang/Long", "valueOf", "(J)Ljava/lang/Long;", false);
mv.visitInsn(AASTORE);
mv.visitMethodInsn(INVOKESTATIC, "java/lang/String", "format", "(Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/String;", false);
mv.visitMethodInsn(INVOKESTATIC, "joebkt/_JoeUtils", "ConsoleMsg", "(Ljava/lang/String;)V", false);
mv.visitLabel(l20);
mv.visitLineNumber(38, l20);
mv.visitFrame(Opcodes.F_FULL, 10, new Object[] {"Testers/ClassToVisit", "java/net/SocketAddress", "com/mojang/authlib/GameProfile", "java/lang/String", "java/io/File", "joebkt/BannedPlayers", "java/util/concurrent/ConcurrentHashMap", "java/lang/String", "java/lang/Long", "java/lang/Long"}, 0, new Object[] {});
mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
mv.visitInsn(DUP);
mv.visitLdcInsn("There is a ");
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V", false);
mv.visitFieldInsn(GETSTATIC, "joebkt/_JoeUtils", "ReconnectDelaySeconds", "I");
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(I)Ljava/lang/StringBuilder;", false);
mv.visitLdcInsn("-second reconnect delay.");
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
mv.visitInsn(ARETURN);
mv.visitLabel(l18);
mv.visitLineNumber(40, l18);
mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
mv.visitVarInsn(ALOAD, 6);
mv.visitVarInsn(ALOAD, 7);
mv.visitVarInsn(ALOAD, 8);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/util/concurrent/ConcurrentHashMap", "put", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", false);
mv.visitInsn(POP);
mv.visitLabel(l0);
mv.visitLineNumber(43, l0);
mv.visitFrame(Opcodes.F_CHOP,3, null, 0, null);
mv.visitVarInsn(ALOAD, 5);
mv.visitVarInsn(ALOAD, 2);
mv.visitMethodInsn(INVOKEVIRTUAL, "joebkt/BannedPlayers", "a", "(Lcom/mojang/authlib/GameProfile;)Z", false);
Label l22 = new Label();
mv.visitJumpInsn(IFEQ, l22);
Label l23 = new Label();
mv.visitLabel(l23);
mv.visitLineNumber(45, l23);
mv.visitVarInsn(ALOAD, 5);
mv.visitVarInsn(ALOAD, 2);
mv.visitMethodInsn(INVOKEVIRTUAL, "joebkt/BannedPlayers", "b", "(Ljava/lang/Object;)Ljoebkt/sr;", false);
mv.visitTypeInsn(CHECKCAST, "joebkt/sw_BanByNameUUID");
mv.visitVarInsn(ASTORE, 7);
Label l24 = new Label();
mv.visitLabel(l24);
mv.visitLineNumber(46, l24);
mv.visitTypeInsn(NEW, "java/io/File");
mv.visitInsn(DUP);
mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
mv.visitInsn(DUP);
mv.visitLdcInsn("plugins_mod");
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V", false);
mv.visitFieldInsn(GETSTATIC, "java/io/File", "separator", "Ljava/lang/String;");
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
mv.visitLdcInsn("RainbowBans");
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
mv.visitFieldInsn(GETSTATIC, "java/io/File", "separator", "Ljava/lang/String;");
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
mv.visitLdcInsn("banmessage.txt");
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
mv.visitMethodInsn(INVOKESPECIAL, "java/io/File", "<init>", "(Ljava/lang/String;)V", false);
mv.visitVarInsn(ASTORE, 8);
Label l25 = new Label();
mv.visitLabel(l25);
mv.visitLineNumber(47, l25);
mv.visitTypeInsn(NEW, "java/io/BufferedReader");
mv.visitInsn(DUP);
mv.visitTypeInsn(NEW, "java/io/FileReader");
mv.visitInsn(DUP);
mv.visitVarInsn(ALOAD, 8);
mv.visitMethodInsn(INVOKESPECIAL, "java/io/FileReader", "<init>", "(Ljava/io/File;)V", false);
mv.visitMethodInsn(INVOKESPECIAL, "java/io/BufferedReader", "<init>", "(Ljava/io/Reader;)V", false);
mv.visitVarInsn(ASTORE, 9);
Label l26 = new Label();
mv.visitLabel(l26);
mv.visitLineNumber(48, l26);
mv.visitVarInsn(ALOAD, 9);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/BufferedReader", "readLine", "()Ljava/lang/String;", false);
mv.visitVarInsn(ASTORE, 10);
Label l27 = new Label();
mv.visitLabel(l27);
mv.visitLineNumber(49, l27);
mv.visitVarInsn(ALOAD, 10);
mv.visitLdcInsn("%PLAYER%");
mv.visitVarInsn(ALOAD, 2);
mv.visitMethodInsn(INVOKEVIRTUAL, "com/mojang/authlib/GameProfile", "getName", "()Ljava/lang/String;", false);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "replaceAll", "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;", false);
mv.visitLdcInsn("%REASON%");
mv.visitVarInsn(ALOAD, 7);
mv.visitMethodInsn(INVOKEVIRTUAL, "joebkt/sw_BanByNameUUID", "d", "()Ljava/lang/String;", false);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "replaceAll", "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;", false);
mv.visitLdcInsn("%CURRENTTIME%");
mv.visitTypeInsn(NEW, "java/util/Date");
mv.visitInsn(DUP);
mv.visitMethodInsn(INVOKESPECIAL, "java/util/Date", "<init>", "()V", false);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/util/Date", "toString", "()Ljava/lang/String;", false);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "replaceAll", "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;", false);
mv.visitVarInsn(ASTORE, 11);
Label l28 = new Label();
mv.visitLabel(l28);
mv.visitLineNumber(50, l28);
mv.visitVarInsn(ALOAD, 9);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/BufferedReader", "close", "()V", false);
Label l29 = new Label();
mv.visitLabel(l29);
mv.visitLineNumber(51, l29);
mv.visitVarInsn(ALOAD, 11);
mv.visitLabel(l1);
mv.visitInsn(ARETURN);
mv.visitLabel(l2);
mv.visitLineNumber(53, l2);
mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] {"java/io/IOException"});
mv.visitVarInsn(ASTORE, 7);
Label l30 = new Label();
mv.visitLabel(l30);
mv.visitLineNumber(54, l30);
mv.visitVarInsn(ALOAD, 7);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/IOException", "printStackTrace", "()V", false);
mv.visitLabel(l22);
mv.visitLineNumber(63, l22);
mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
mv.visitMethodInsn(INVOKESTATIC, "net/minecraft/server/MinecraftServer", "getServer", "()Lnet/minecraft/server/MinecraftServer;", false);
mv.visitMethodInsn(INVOKEVIRTUAL, "net/minecraft/server/MinecraftServer", "getThePlayerList", "()Ljoebkt/PlayerList;", false);
mv.visitMethodInsn(INVOKEVIRTUAL, "joebkt/PlayerList", "getWhitelist", "()Z", false);
mv.visitVarInsn(ISTORE, 7);
Label l31 = new Label();
mv.visitLabel(l31);
mv.visitLineNumber(69, l31);
mv.visitVarInsn(ILOAD, 7);
Label l32 = new Label();
mv.visitJumpInsn(IFEQ, l32);
Label l33 = new Label();
mv.visitLabel(l33);
mv.visitLineNumber(70, l33);
mv.visitInsn(ACONST_NULL);
mv.visitVarInsn(ASTORE, 8);
mv.visitLabel(l3);
mv.visitLineNumber(72, l3);
mv.visitTypeInsn(NEW, "java/lang/String");
mv.visitInsn(DUP);
mv.visitFieldInsn(GETSTATIC, "joebkt/PlayerList", "fileWhitelist", "Ljava/io/File;");
mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/File", "toURI", "()Ljava/net/URI;", false);
mv.visitMethodInsn(INVOKESTATIC, "java/nio/file/Paths", "get", "(Ljava/net/URI;)Ljava/nio/file/Path;", false);
mv.visitMethodInsn(INVOKESTATIC, "java/nio/file/Files", "readAllBytes", "(Ljava/nio/file/Path;)[B", false);
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/String", "<init>", "([B)V", false);
mv.visitVarInsn(ASTORE, 8);
mv.visitLabel(l4);
mv.visitLineNumber(73, l4);
Label l34 = new Label();
mv.visitJumpInsn(GOTO, l34);
mv.visitLabel(l5);
mv.visitFrame(Opcodes.F_FULL, 9, new Object[] {"Testers/ClassToVisit", "java/net/SocketAddress", "com/mojang/authlib/GameProfile", "java/lang/String", "java/io/File", "joebkt/BannedPlayers", "java/util/concurrent/ConcurrentHashMap", Opcodes.INTEGER, "java/lang/String"}, 1, new Object[] {"java/io/IOException"});
mv.visitVarInsn(ASTORE, 9);
Label l35 = new Label();
mv.visitLabel(l35);
mv.visitLineNumber(74, l35);
mv.visitVarInsn(ALOAD, 9);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/IOException", "printStackTrace", "()V", false);
mv.visitLabel(l34);
mv.visitLineNumber(76, l34);
mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
mv.visitVarInsn(ALOAD, 8);
mv.visitLdcInsn("[]");
mv.visitJumpInsn(IF_ACMPEQ, l32);
Label l36 = new Label();
mv.visitLabel(l36);
mv.visitLineNumber(78, l36);
mv.visitVarInsn(ALOAD, 8);
mv.visitVarInsn(ALOAD, 2);
mv.visitMethodInsn(INVOKEVIRTUAL, "com/mojang/authlib/GameProfile", "getName", "()Ljava/lang/String;", false);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "contains", "(Ljava/lang/CharSequence;)Z", false);
mv.visitJumpInsn(IFNE, l32);
mv.visitVarInsn(ALOAD, 8);
mv.visitVarInsn(ALOAD, 3);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "contains", "(Ljava/lang/CharSequence;)Z", false);
mv.visitJumpInsn(IFNE, l32);
Label l37 = new Label();
mv.visitLabel(l37);
mv.visitLineNumber(79, l37);
mv.visitLdcInsn("You are not whitelisted on this server!");
mv.visitInsn(ARETURN);
mv.visitLabel(l32);
mv.visitLineNumber(83, l32);
mv.visitFrame(Opcodes.F_CHOP,1, null, 0, null);
mv.visitTypeInsn(NEW, "joebkt/BannedIPs");
mv.visitInsn(DUP);
mv.visitFieldInsn(GETSTATIC, "joebkt/PlayerList", "fileBannedIPs", "Ljava/io/File;");
mv.visitMethodInsn(INVOKESPECIAL, "joebkt/BannedIPs", "<init>", "(Ljava/io/File;)V", false);
mv.visitVarInsn(ASTORE, 8);
Label l38 = new Label();
mv.visitLabel(l38);
mv.visitLineNumber(84, l38);
mv.visitVarInsn(ALOAD, 8);
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(INVOKEVIRTUAL, "joebkt/BannedIPs", "a", "(Ljava/net/SocketAddress;)Z", false);
Label l39 = new Label();
mv.visitJumpInsn(IFEQ, l39);
Label l40 = new Label();
mv.visitLabel(l40);
mv.visitLineNumber(85, l40);
mv.visitTypeInsn(NEW, "java/io/File");
mv.visitInsn(DUP);
mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
mv.visitInsn(DUP);
mv.visitLdcInsn("plugins_mod");
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V", false);
mv.visitFieldInsn(GETSTATIC, "java/io/File", "separator", "Ljava/lang/String;");
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
mv.visitLdcInsn("RainbowBans");
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
mv.visitFieldInsn(GETSTATIC, "java/io/File", "separator", "Ljava/lang/String;");
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
mv.visitLdcInsn("banmessage.txt");
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
mv.visitMethodInsn(INVOKESPECIAL, "java/io/File", "<init>", "(Ljava/lang/String;)V", false);
mv.visitVarInsn(ASTORE, 9);
mv.visitLabel(l6);
mv.visitLineNumber(87, l6);
mv.visitVarInsn(ALOAD, 8);
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(INVOKEVIRTUAL, "joebkt/BannedIPs", "b", "(Ljava/net/SocketAddress;)Ljoebkt/se_BanByIP;", false);
mv.visitVarInsn(ASTORE, 10);
Label l41 = new Label();
mv.visitLabel(l41);
mv.visitLineNumber(88, l41);
mv.visitTypeInsn(NEW, "java/io/BufferedReader");
mv.visitInsn(DUP);
mv.visitTypeInsn(NEW, "java/io/FileReader");
mv.visitInsn(DUP);
mv.visitVarInsn(ALOAD, 9);
mv.visitMethodInsn(INVOKESPECIAL, "java/io/FileReader", "<init>", "(Ljava/io/File;)V", false);
mv.visitMethodInsn(INVOKESPECIAL, "java/io/BufferedReader", "<init>", "(Ljava/io/Reader;)V", false);
mv.visitVarInsn(ASTORE, 11);
Label l42 = new Label();
mv.visitLabel(l42);
mv.visitLineNumber(89, l42);
mv.visitVarInsn(ALOAD, 11);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/BufferedReader", "readLine", "()Ljava/lang/String;", false);
mv.visitVarInsn(ASTORE, 12);
Label l43 = new Label();
mv.visitLabel(l43);
mv.visitLineNumber(90, l43);
mv.visitVarInsn(ALOAD, 12);
mv.visitLdcInsn("%PLAYER%");
mv.visitVarInsn(ALOAD, 2);
mv.visitMethodInsn(INVOKEVIRTUAL, "com/mojang/authlib/GameProfile", "getName", "()Ljava/lang/String;", false);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "replaceAll", "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;", false);
mv.visitLdcInsn("%REASON%");
mv.visitVarInsn(ALOAD, 10);
mv.visitMethodInsn(INVOKEVIRTUAL, "joebkt/se_BanByIP", "d", "()Ljava/lang/String;", false);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "replaceAll", "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;", false);
mv.visitLdcInsn("%CURRENTTIME%");
mv.visitTypeInsn(NEW, "java/util/Date");
mv.visitInsn(DUP);
mv.visitMethodInsn(INVOKESPECIAL, "java/util/Date", "<init>", "()V", false);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/util/Date", "toString", "()Ljava/lang/String;", false);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "replaceAll", "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;", false);
mv.visitVarInsn(ASTORE, 13);
Label l44 = new Label();
mv.visitLabel(l44);
mv.visitLineNumber(91, l44);
mv.visitVarInsn(ALOAD, 11);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/BufferedReader", "close", "()V", false);
Label l45 = new Label();
mv.visitLabel(l45);
mv.visitLineNumber(92, l45);
mv.visitVarInsn(ALOAD, 13);
mv.visitLabel(l7);
mv.visitInsn(ARETURN);
mv.visitLabel(l8);
mv.visitLineNumber(93, l8);
mv.visitFrame(Opcodes.F_FULL, 10, new Object[] {"Testers/ClassToVisit", "java/net/SocketAddress", "com/mojang/authlib/GameProfile", "java/lang/String", "java/io/File", "joebkt/BannedPlayers", "java/util/concurrent/ConcurrentHashMap", Opcodes.INTEGER, "joebkt/BannedIPs", "java/io/File"}, 1, new Object[] {"java/io/IOException"});
mv.visitVarInsn(ASTORE, 10);
Label l46 = new Label();
mv.visitLabel(l46);
mv.visitLineNumber(94, l46);
mv.visitVarInsn(ALOAD, 10);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/IOException", "printStackTrace", "()V", false);
mv.visitLabel(l39);
mv.visitLineNumber(107, l39);
mv.visitFrame(Opcodes.F_CHOP,1, null, 0, null);
mv.visitMethodInsn(INVOKESTATIC, "net/minecraft/server/MinecraftServer", "getServer", "()Lnet/minecraft/server/MinecraftServer;", false);
mv.visitMethodInsn(INVOKEVIRTUAL, "net/minecraft/server/MinecraftServer", "getThePlayerList", "()Ljoebkt/PlayerList;", false);
mv.visitVarInsn(ASTORE, 9);
Label l47 = new Label();
mv.visitLabel(l47);
mv.visitLineNumber(108, l47);
mv.visitVarInsn(ALOAD, 9);
mv.visitMethodInsn(INVOKEVIRTUAL, "joebkt/PlayerList", "getNumPlayers", "()I", false);
mv.visitVarInsn(ALOAD, 9);
mv.visitMethodInsn(INVOKEVIRTUAL, "joebkt/PlayerList", "getMaxPlayers", "()I", false);
Label l48 = new Label();
mv.visitJumpInsn(IF_ICMPLT, l48);
mv.visitLdcInsn("The server is full!");
Label l49 = new Label();
mv.visitJumpInsn(GOTO, l49);
mv.visitLabel(l48);
mv.visitFrame(Opcodes.F_APPEND,1, new Object[] {"joebkt/PlayerList"}, 0, null);
mv.visitInsn(ACONST_NULL);
mv.visitLabel(l49);
mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] {"java/lang/String"});
mv.visitInsn(ARETURN);
Label l50 = new Label();
mv.visitLabel(l50);
mv.visitLocalVariable("this", "LTesters/ClassToVisit;", null, l9, l50, 0);
mv.visitLocalVariable("addr", "Ljava/net/SocketAddress;", null, l9, l50, 1);
mv.visitLocalVariable("profile", "Lcom/mojang/authlib/GameProfile;", null, l9, l50, 2);
mv.visitLocalVariable("ip", "Ljava/lang/String;", null, l10, l50, 3);
mv.visitLocalVariable("fileBannedPlayers", "Ljava/io/File;", null, l11, l50, 4);
mv.visitLocalVariable("bp", "Ljoebkt/BannedPlayers;", null, l12, l50, 5);
mv.visitLocalVariable("lastConnectTime", "Ljava/util/concurrent/ConcurrentHashMap;", "Ljava/util/concurrent/ConcurrentHashMap<Ljava/lang/String;Ljava/lang/Long;>;", l13, l50, 6);
mv.visitLocalVariable("pName", "Ljava/lang/String;", null, l15, l0, 7);
mv.visitLocalVariable("msNow", "Ljava/lang/Long;", null, l16, l0, 8);
mv.visitLocalVariable("msLast", "Ljava/lang/Long;", null, l17, l0, 9);
mv.visitLocalVariable("var5", "Ljoebkt/sw_BanByNameUUID;", null, l24, l2, 7);
mv.visitLocalVariable("file", "Ljava/io/File;", null, l25, l2, 8);
mv.visitLocalVariable("reader", "Ljava/io/BufferedReader;", null, l26, l2, 9);
mv.visitLocalVariable("reason", "Ljava/lang/String;", null, l27, l2, 10);
mv.visitLocalVariable("rep", "Ljava/lang/String;", null, l28, l2, 11);
mv.visitLocalVariable("e", "Ljava/io/IOException;", null, l30, l22, 7);
mv.visitLocalVariable("whitelist", "Z", null, l31, l50, 7);
mv.visitLocalVariable("whitelisters", "Ljava/lang/String;", null, l3, l32, 8);
mv.visitLocalVariable("e", "Ljava/io/IOException;", null, l35, l34, 9);
mv.visitLocalVariable("bi", "Ljoebkt/BannedIPs;", null, l38, l50, 8);
mv.visitLocalVariable("file", "Ljava/io/File;", null, l6, l39, 9);
mv.visitLocalVariable("var3", "Ljoebkt/se_BanByIP;", null, l41, l8, 10);
mv.visitLocalVariable("reader", "Ljava/io/BufferedReader;", null, l42, l8, 11);
mv.visitLocalVariable("line", "Ljava/lang/String;", null, l43, l8, 12);
mv.visitLocalVariable("rep", "Ljava/lang/String;", null, l44, l8, 13);
mv.visitLocalVariable("e", "Ljava/io/IOException;", null, l46, l39, 10);
mv.visitLocalVariable("ls", "Ljoebkt/PlayerList;", null, l47, l50, 9);
mv.visitMaxs(8, 14);
mv.visitEnd();
}
}
EDIT 2: Voici mon visiteur de classe:
package RainbowBansTransAgent;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
public class RBClassVisitor extends ClassVisitor{
public RBClassVisitor(ClassVisitor c) {
super(Opcodes.ASM5, c);
}
@Override
public MethodVisitor visitMethod(int access, String name, String desc,
String signature, String[] exceptions) {
if(name.equals("checkIfShouldDisconnect")){
Logger.getLogger(false).logString("Found method to replace!");
RBMethodVisitor vs = new RBMethodVisitor(cv.visitMethod(access, name, desc, signature, exceptions), cv);
vs.visitCode();
return null;
}else return cv.visitMethod(access, name, desc, signature, exceptions);
}
}
Le ClassFormatError vous at-il indiqué ce qui n'allait pas? Avez-vous essayé CheckClassAdapter d'ASM? –
J'ai utilisé cela dans mes transformateurs et une de mes erreurs précédentes m'a dit, mais celui-ci ne l'a pas – JD9999
J'ai modifié la question pour inclure le comportement désiré. Je crois que je n'ai pas besoin d'inclure plus de code pour reproduire le problème, dites moi si je me trompe et ce que j'ai besoin d'améliorer – JD9999