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jode
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Renamed to jode.obfuscator.Main

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new options
use Renamer and ModifierMatcher


git-svn-id: https://svn.code.sf.net/p/jode/code/trunk@985 379699f6-c40d-0410-875b-85095c16579e
stable
jochen 26 years ago
parent ed8e861423
commit c230c44803
1 changed files with 137 additions and 41 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 176
      jode/jode/obfuscator/Main.java

176
jode/jode/obfuscator/Main.java
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@ -1,4 +1,4 @@
/* Obfuscator Copyright (C) 1998-1999 Jochen Hoenicke.
/* Main Copyright (C) 1998-1999 Jochen Hoenicke.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -17,29 +17,41 @@
* $Id$
*/
package jode;
package jode.obfuscator;
import jode.bytecode.ClassInfo;
import jode.obfuscator.*;
import jode.bytecode.SearchPath;
import jode.GlobalOptions;
import java.util.Vector;
import java.util.StringTokenizer;
import java.lang.reflect.Modifier;
import java.io.PrintWriter;
import java.io.File;
///#ifdef JDK12
///import java.util.Collection;
///import java.util.HashSet;
///#else
import jode.util.Collection;
import jode.util.HashSet;
///#endif
public class Obfuscator {
public static boolean shouldStrip = true;
public class Main {
public static boolean swapOrder = false;
public static boolean preserveSerial = true;
public static final int PRESERVE_NONE = 0;
public static final int PRESERVE_PUBLIC = Modifier.PUBLIC;
public static final int PRESERVE_PROTECTED =
PRESERVE_PUBLIC | Modifier.PROTECTED;
public static final int PRESERVE_PACKAGE =
PRESERVE_PROTECTED | Modifier.PRIVATE; //XXX
public static final int OPTION_STRONGOVERLOAD = 0x0001;
public static final int OPTION_PRESERVESERIAL = 0x0002;
public static int options = OPTION_PRESERVESERIAL;
public static final int RENAME_STRONG = 0;
public static final int RENAME_WEAK = 1;
public static final int RENAME_UNIQUE = 2;
public static final int RENAME_NONE = 3;
public static final String[] stripNames = {
"unreach", "inner", "lvt", "lnt", "source"
};
public static final int STRIP_UNREACH = 0x0001;
public static final int STRIP_INNERINFO = 0x0002;
public static final int STRIP_LVT = 0x0004;
public static final int STRIP_LNT = 0x0008;
public static final int STRIP_SOURCE = 0x0010;
public static int stripping = 0x1;
private static ClassBundle bundle;
public static void usage() {
PrintWriter err = GlobalOptions.err;
@ -67,6 +79,8 @@ public class Obfuscator {
err.println("Obfuscating options: ");
err.println("\t--rename={strong|weak|unique|none} "+
"Rename identifiers with given scheme");
err.println("\t--strip=... "+
"use --strip=help for more information.");
err.println("\t--table <file> "+
"Read (some) translation table from file");
err.println("\t--revtable <file> "+
@ -77,31 +91,106 @@ public class Obfuscator {
"use --debug=help for more information.");
}
public static int parseRenameOption(String option) {
public static void usageStrip() {
PrintWriter err = GlobalOptions.err;
err.println("Strip options: --strip=flag1,flag2,...");
err.println("possible flags:");
err.println("\tunreach " +
"strip all unreachable methods and classes.");
err.println("\tinner " +
"strip inner classes info.");
err.println("\tlvt " +
"strip local variable tables.");
err.println("\tlnt " +
"strip line number tables.");
err.println("\tsource " +
"strip the name of the source file.");
err.println("\tinout " +
"show T1/T2 in/out set analysis.");
err.println("\tlvt " +
"dump LocalVariableTable.");
err.println("\tcheck " +
"do time consuming sanity checks.");
err.println("\tlocals " +
"dump local merging information.");
err.println("\tconstructors " +
"dump constructor simplification.");
err.println("\tinterpreter " +
"debug execution of interpreter.");
System.exit(0);
}
public static void setStripOptions(String stripString) {
if (stripString.length() == 0 || stripString.equals("help"))
usageStrip();
StringTokenizer st = new StringTokenizer(stripString, ",");
next_token:
while (st.hasMoreTokens()) {
String token = st.nextToken().intern();
for (int i=0; i < stripNames.length; i++) {
if (token == stripNames[i]) {
stripping |= 1 << i;
continue next_token;
}
}
GlobalOptions.err.println("Illegal strip flag: "+token);
usageStrip();
}
}
public static Renamer getRenamer(String option) {
if (option.equals("strong"))
return RENAME_STRONG;
return new StrongRenamer
("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz",
"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz");
else if (option.equals("weak"))
return RENAME_WEAK;
else if (option.equals("unique"))
return RENAME_UNIQUE;
else if (option.equals("none"))
return RENAME_NONE;
return new StrongRenamer
("abcdefghijklmnopqrstuvwxyz",
"0123456789abcdefghijklmnopqrstuvwxyz");
else if (option.equals("unique")) {
return new Renamer() {
static int serialnr = 0;
public String generateName(Identifier ident, String lastName) {
return ("xxx" + serialnr++);
}
};
} else if (option.equals("none")) {
return new Renamer() {
public String generateName(Identifier ident, String lastName) {
String name = ident.getName();
if (lastName == null)
return name;
int nr = 2;
if (lastName.length() > name.length())
nr = 1 + Integer.parseInt
(lastName.substring(name.length()));
return name + nr;
}
};
}
GlobalOptions.err.println("Incorrect value for --rename option: "
+ option);
usage();
System.exit(0);
return 0;
return null;
}
public static ClassBundle getClassBundle() {
return bundle;
}
public static void main(String[] params) {
int i;
String sourcePath = System.getProperty("java.class.path");
String sourcePath = System.getProperty("java.class.path")
.replace(File.pathSeparatorChar, SearchPath.pathSeparatorChar);
String destPath = ".";
Vector preservedIdents = new Vector();
Collection preservedIdents = new HashSet();
int preserveRule = PRESERVE_NONE;
int rename = RENAME_WEAK;
ModifierMatcher preserveRule = ModifierMatcher.denyAll;
Renamer renamer = null;
String table = null;
String toTable = null;
@ -119,9 +208,10 @@ public class Obfuscator {
flags = params[++i];
}
GlobalOptions.setDebugging(flags);
} else if (params[i].equals("--nostrip"))
shouldStrip = false;
} else if (params[i].equals("--strip"))
setStripOptions(params[++i]);
else if (params[i].startsWith("--strip="))
setStripOptions(params[i].substring(8));
else if (params[i].equals("--sourcepath")
|| params[i].equals("--classpath")
|| params[i].equals("--cp"))
@ -132,23 +222,26 @@ public class Obfuscator {
/* Preserve options */
else if (params[i].equals("--package"))
preserveRule = PRESERVE_PACKAGE;
preserveRule = ModifierMatcher.allowAll.forceAccess
(0, true);
else if (params[i].equals("--protected"))
preserveRule = PRESERVE_PROTECTED;
preserveRule = ModifierMatcher.allowAll.forceAccess
(Modifier.PROTECTED, true);
else if (params[i].equals("--public"))
preserveRule = PRESERVE_PUBLIC;
preserveRule = ModifierMatcher.allowAll.forceAccess
(Modifier.PUBLIC, true);
else if (params[i].equals("--preserve")) {
String ident = params[++i];
preservedIdents.addElement(ident);
preservedIdents.add(ident);
}
else if (params[i].equals("--breakserial"))
preserveSerial = false;
options &= ~OPTION_PRESERVESERIAL;
/* Obfuscate options */
else if (params[i].equals("--rename"))
rename = parseRenameOption(params[++i]);
renamer = getRenamer(params[++i]);
else if (params[i].startsWith("--rename="))
rename = parseRenameOption(params[i].substring(9));
renamer = getRenamer(params[i].substring(9));
else if (params[i].equals("--table")) {
table = params[++i];
}
@ -167,6 +260,9 @@ public class Obfuscator {
return;
}
}
if (renamer == null)
renamer = getRenamer("none");
if (i == params.length) {
GlobalOptions.err.println("No package or classes specified.");
usage();
@ -175,7 +271,7 @@ public class Obfuscator {
GlobalOptions.err.println("Loading classes");
ClassInfo.setClassPath(sourcePath);
ClassBundle bundle = new ClassBundle();
bundle = new ClassBundle();
for (; i< params.length; i++)
bundle.loadClasses(params[i]);
@ -185,7 +281,7 @@ public class Obfuscator {
GlobalOptions.err.println("Renaming methods");
if (table != null)
bundle.readTable(table);
bundle.buildTable(rename);
bundle.buildTable(renamer);
if (toTable != null)
bundle.writeTable(toTable);

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