Initial revision

git-svn-id: https://svn.code.sf.net/p/jode/code/trunk@156 379699f6-c40d-0410-875b-85095c16579e

jode/jode/JodeApplet.java

@@ -0,0 +1,67 @@
+package jode;
+import java.applet.*;
+import java.awt.*;
+import java.awt.event.*;
+import java.io.*;
+
+public class JodeApplet extends Applet implements ActionListener, Runnable {
+    TextField classpathField;
+    TextField classField;
+    TextArea  sourcecodeField;
+
+    Thread decompileThread;
+    
+    public JodeApplet() {
+	setLayout(new BorderLayout());
+	Panel optionPanel = new Panel();
+	optionPanel.setLayout(new GridLayout(2,2));
+	optionPanel.add(new Label("class path: "));
+	classpathField = new TextField();
+	optionPanel.add(classpathField);
+	optionPanel.add(new Label("class name: "));
+	classField = new TextField();
+	optionPanel.add(classField);
+	add(optionPanel, BorderLayout.NORTH);
+
+	sourcecodeField = new TextArea();
+	add(sourcecodeField, BorderLayout.CENTER);
+
+	classField.addActionListener(this);
+    }
+	
+    public synchronized void actionPerformed(ActionEvent e) {
+	if (decompileThread == null) {
+	    decompileThread = new Thread(this);
+	    sourcecodeField.setText("Please wait, while decompiling...\n");
+	    decompileThread.start();
+	} else
+	    sourcecodeField.append("Be a little bit more patient, please.\n");
+    }
+
+    public void init() {
+	String cp = getParameter("classpath");
+	if (cp != null)
+	    classpathField.setText(cp);
+	String cls = getParameter("class");
+	if (cls != null)
+	    classField.setText(cls);
+    }
+
+    public void run() {
+	JodeEnvironment env = new JodeEnvironment(classpathField.getText());
+	ByteArrayOutputStream out = new ByteArrayOutputStream();
+	try {
+	    TabbedPrintWriter writer = new TabbedPrintWriter(out, "    ");
+	    env.doClass(classField.getText(), writer);
+	    sourcecodeField.setText(out.toString());
+	} catch (Throwable t) {
+	    sourcecodeField.setText("Didn't succeed.\n"
+				    +"Check the java console for more info.");
+	    t.printStackTrace();
+	} finally {
+	    synchronized(this) {
+		decompileThread = null;
+	    }
+	}
+    }
+}

jode/jode/obfuscator/MethodReachability.java

@@ -0,0 +1,132 @@
+/* 
+ * MethodReachability (c) 1998 Jochen Hoenicke
+ *
+ * You may distribute under the terms of the GNU General Public License.
+ *
+ * IN NO EVENT SHALL JOCHEN HOENICKE BE LIABLE TO ANY PARTY FOR DIRECT,
+ * INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF
+ * THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF JOCHEN HOENICKE 
+ * HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * JOCHEN HOENICKE SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
+ * BASIS, AND JOCHEN HOENICKE HAS NO OBLIGATION TO PROVIDE MAINTENANCE,
+ * SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * $Id$
+ */
+
+package jode.obfuscator;
+import jode.bytecode.ConstantPool;
+import jode.bytecode.MethodInfo;
+import jode.MethodType;
+import jode.Type;
+import java.lang.reflect.Modifier;
+import java.util.*;
+
+public class MethodReachability {
+    ClassReachability clazz;
+    MethodInfo info;
+    public ClassReachability inheritedFromClass;
+
+    public boolean reachable = false;
+    public boolean preserve = false;
+
+    public Vector references;
+
+    public MethodReachability(ClassReachability clazz, MethodInfo info) {
+	this.clazz = clazz;
+	this.info  = info;
+
+        AttributeInfo codeattr = minfo.findAttribute("Code");
+        if (codeattr != null) {
+            DataInputStream stream = new DataInputStream
+                (new ByteArrayInputStream(codeattr.getContents()));
+            CodeInfo codeinfo = new CodeInfo();
+            try {
+                codeinfo.read(classAnalyzer.getConstantPool(), stream);
+		analyzeCode(codeinfo);
+            } catch (IOException ex) {
+                ex.printStackTrace();
+                code = null;
+            }
+        }
+	
+    }
+
+    public void analyzeCode(CodeInfo codeinfo) {
+	references = new Vector();
+	byte[] code = codeinfo.getCode();
+        try {
+            DataInputStream stream = 
+                new DataInputStream(new ByteArrayInputStream(code));
+	    Opcodes.getReferences(stream, references);
+        } catch (IOException ex) {
+            ex.printStackTrace();
+            throw new ClassFormatError(ex.getMessage());
+        }
+    }
+
+    public void markReachable() {
+	ConstantPool cp = clazz.getClassInfo().getConstantPool();
+	if (!reachable) {
+	    reachable = true;
+	    Enumeration enum = references.elements();
+	    while (enum.hasMoreElements()) {
+		int ref = ((Integer) enum.nextElement()).intValue();
+		int tag = cp.getTag(ref);
+		switch (tag) {
+		case ConstantPool.FIELDREF:
+		case ConstantPool.METHODREF:
+		case ConstantPool.INTERFACEMETHODREF:
+		    String[] refs = cp.getRef(ref);
+		    if (tag == ConstantPool.FIELDREF)
+			clazz.getBundle()
+			    .markReachableField(refs[0], refs[1],
+						new MethodType(refs[2]));
+		    else
+			clazz.getBundle()
+			    .markReachableMethod(refs[0], refs[1],
+						 new MethodTyp(refs[2]));
+		    break;
+		case ConstantPool.CLASS:
+		    String clName = cp.getClassName(ref);
+		    clazz.getBundle().markReachable(clName);
+		    break;
+		}
+	    }
+	}
+    }
+
+    public void markPreserved() {
+	ConstantPool cp = clazz.getClassInfo().getConstantPool();
+	if (!preserved) {
+	    preserved = true;
+	    Enumeration enum = references.elements();
+	    while (enum.hasMoreElements()) {
+		int ref = ((Integer) enum.nextElement()).intValue();
+		int tag = cp.getTag(ref);
+		switch (tag) {
+		case ConstantPool.FIELDREF:
+		case ConstantPool.METHODREF:
+		case ConstantPool.INTERFACEMETHODREF:
+		    String[] refs = cp.getRef(ref);
+		    if (tag == ConstantPool.FIELDREF)
+			clazz.getBundle()
+			    .markPreservedField(refs[0], refs[1],
+						new MethodType(refs[2]));
+		    else
+			clazz.getBundle()
+			    .markPreservedMethod(refs[0], refs[1],
+						 new MethodTyp(refs[2]));
+		    break;
+		case ConstantPool.CLASS:
+		    String clName = cp.getClassName(ref);
+		    clazz.getBundle().markPreserved(clName);
+		    break;
+		}
+	    }
+	}
+    }
+}