Examples with CheckClassAdapter org.objectweb.asm.util.CheckClassAdapter used on opensource projects

Example 6 with CheckClassAdapter

use of org.objectweb.asm.util.CheckClassAdapter in project groovy-core by groovy.

the class VerifyClass method readClass.

private boolean readClass(String clazz) throws IOException {
    ClassReader cr = new ClassReader(new FileInputStream(clazz));
    ClassNode ca = new ClassNode() {

        public void visitEnd() {
        //accept(cv);
        }
    };
    cr.accept(new CheckClassAdapter(ca), ClassWriter.COMPUTE_MAXS);
    boolean failed = false;
    List methods = ca.methods;
    for (int i = 0; i < methods.size(); ++i) {
        MethodNode method = (MethodNode) methods.get(i);
        if (method.instructions.size() > 0) {
            Analyzer a = new Analyzer(new SimpleVerifier());
            try {
                a.analyze(ca.name, method);
                continue;
            } catch (Exception e) {
                e.printStackTrace();
            }
            final Frame[] frames = a.getFrames();
            if (!failed) {
                failed = true;
                log("verifying of class " + clazz + " failed");
            }
            if (verbose)
                log(method.name + method.desc);
            TraceMethodVisitor mv = new TraceMethodVisitor(null);
            /*= new TraceMethodVisitor(null) {
                    public void visitMaxs(int maxStack, int maxLocals) {
                        StringBuffer buffer = new StringBuffer();
                        for (int i = 0; i < text.size(); ++i) {
                            String s = frames[i] == null ? "null" : frames[i].toString();
                            while (s.length() < maxStack + maxLocals + 1) {
                                s += " ";
                            }
                            buffer.append(Integer.toString(i + 100000).substring(1));
                            buffer.append(" ");
                            buffer.append(s);
                            buffer.append(" : ");
                            buffer.append(text.get(i));
                        }
                        if (verbose) log(buffer.toString());
                    }
                };*/
            for (int j = 0; j < method.instructions.size(); ++j) {
                Object insn = method.instructions.get(j);
                if (insn instanceof AbstractInsnNode) {
                    ((AbstractInsnNode) insn).accept(mv);
                } else {
                    mv.visitLabel((Label) insn);
                }
            }
            mv.visitMaxs(method.maxStack, method.maxLocals);
        }
    }
    return !failed;
}

Example 7 with CheckClassAdapter

use of org.objectweb.asm.util.CheckClassAdapter in project dex2jar by pxb1988.

the class AsmVerify method doCommandLine.

@Override
protected void doCommandLine() throws Exception {
    if (remainingArgs.length < 1) {
        usage();
        return;
    }
    List<Path> files = new ArrayList<>();
    for (String fn : remainingArgs) {
        Path file = new File(fn).toPath();
        if (!Files.exists(file)) {
            System.err.println(fn + " is not exists");
            usage();
            return;
        }
        files.add(file);
    }
    for (Path file : files) {
        System.out.println("verify " + file);
        walkJarOrDir(file, new FileVisitorX() {

            @Override
            public void visitFile(Path file, String relative) throws IOException {
                if (file.getFileName().toString().endsWith(".class")) {
                    ClassReader cr = new ClassReader(Files.readAllBytes(file));
                    ClassNode cn = new ClassNode();
                    cr.accept(new CheckClassAdapter(cn, false), ClassReader.SKIP_DEBUG | ClassReader.EXPAND_FRAMES | ClassReader.SKIP_FRAMES);
                    for (MethodNode method : cn.methods) {
                        BasicVerifier verifier = new BasicVerifier();
                        Analyzer<BasicValue> a = new Analyzer<>(verifier);
                        try {
                            a.analyze(cn.name, method);
                        } catch (Exception ex) {
                            System.err.println("Error verify method " + cr.getClassName() + "." + method.name + " " + method.desc);
                            if (detail) {
                                ex.printStackTrace(System.err);
                                printAnalyzerResult(method, a, new PrintWriter(new OutputStreamWriter(System.err, StandardCharsets.UTF_8)));
                            }
                        }
                    }
                }
            }
        });
    }
}

Example 8 with CheckClassAdapter

use of org.objectweb.asm.util.CheckClassAdapter in project RecurrentComplex by Ivorforce.

the class VanillaGenerationClassFactory method createClassBinary.

protected byte[] createClassBinary(String className) {
    ClassWriter writer = new ClassWriter(0);
    ClassVisitor cw = new CheckClassAdapter(writer);
    cw.visit(V1_5, ACC_PUBLIC, className, null, Type.getInternalName(GenericVillagePiece.class), null);
    {
        // empty constructor
        String descriptor = Type.getMethodDescriptor(Type.VOID_TYPE);
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", descriptor, null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, Type.getInternalName(GenericVillagePiece.class), "<init>", descriptor, false);
        mv.visitInsn(RETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        // initial constructor
        String descriptor = Type.getMethodDescriptor(Type.VOID_TYPE, Type.getType(StructureVillagePieces.Start.class), Type.INT_TYPE);
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", descriptor, null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitVarInsn(ILOAD, 2);
        mv.visitMethodInsn(INVOKESPECIAL, Type.getInternalName(GenericVillagePiece.class), "<init>", descriptor, false);
        mv.visitInsn(RETURN);
        mv.visitMaxs(4, 3);
        mv.visitEnd();
    }
    cw.visitEnd();
    return writer.toByteArray();
}

Example 9 with CheckClassAdapter

use of org.objectweb.asm.util.CheckClassAdapter in project slab by RichardWarburton.

the class BytecodeGenerator method generate.

@SuppressWarnings("unchecked")
public Class<T> generate() {
    ClassWriter out = new ClassWriter(ClassWriter.COMPUTE_MAXS);
    CheckClassAdapter writer = new CheckClassAdapter(out);
    int offset = 0;
    declareClass(writer);
    declareConstructor(writer);
    for (Method getter : inspector.getters) {
        offset = declareField(getter, writer, offset);
    }
    writer.visitEnd();
    return (Class<T>) new GeneratedClassLoader(options).defineClass(implementationName, out);
}

Example 10 with CheckClassAdapter

use of org.objectweb.asm.util.CheckClassAdapter in project cdap by caskdata.

the class Debugs method debugByteCode.

public static void debugByteCode(ClassDefinition classDefinition, PrintWriter writer) {
    ClassReader reader = new ClassReader(classDefinition.getBytecode());
    reader.accept(new CheckClassAdapter(new TraceClassVisitor(writer)), 0);
    File file = new File("/tmp/" + classDefinition.getInternalName() + ".class");
    file.getParentFile().mkdirs();
    writer.println(file);
    writer.flush();
    try {
        ByteStreams.write(classDefinition.getBytecode(), Files.newOutputStreamSupplier(file));
    } catch (IOException e) {
        e.printStackTrace();
    }
}