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305 lines
10 KiB
305 lines
10 KiB
/* ConstantRuntimeEnvironment Copyright (C) 1999 Jochen Hoenicke.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Id$
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*/
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package jode.obfuscator;
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import jode.jvm.Interpreter;
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import jode.jvm.SimpleRuntimeEnvironment;
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import jode.jvm.InterpreterException;
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import jode.bytecode.Reference;
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import jode.bytecode.BytecodeInfo;
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import jode.type.*;
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import java.lang.reflect.Array;
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import java.lang.reflect.InvocationTargetException;
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import java.util.*;
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public class ConstantRuntimeEnvironment extends SimpleRuntimeEnvironment {
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/**
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* The references that may be used in constant methods.
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*/
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///#ifdef JDK12
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/// static Set whiteList = new HashSet();
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///
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/// static void addWhite(Reference ref) {
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/// /* note that this gets inlined */
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/// whiteList.add(ref);
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/// }
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///
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/// public static boolean isWhite(Reference ref) {
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/// return whiteList.contains(ref);
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/// }
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///#else
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static Hashtable whiteList = new Hashtable();
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static void addWhite(Reference ref) {
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/* note that this gets inlined */
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whiteList.put(ref, ref);
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}
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public static boolean isWhite(Reference ref) {
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return whiteList.containsKey(ref);
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}
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///#endif
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static {
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addWhite(Reference.getReference
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("Ljava/lang/String;", "toCharArray", "()[C"));
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addWhite(Reference.getReference
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("Ljava/lang/StringBuffer;", "<init>",
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"(Ljava/lang/String;)V"));
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addWhite(Reference.getReference
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("Ljava/lang/StringBuffer;", "<init>", "()V"));
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addWhite(Reference.getReference
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("Ljava/lang/StringBuffer;", "append",
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"(Ljava/lang/String;)Ljava/lang/StringBuffer;"));
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addWhite(Reference.getReference
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("Ljava/lang/StringBuffer;", "append",
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"(C)Ljava/lang/StringBuffer;"));
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addWhite(Reference.getReference
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("Ljava/lang/StringBuffer;", "append",
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"(B)Ljava/lang/StringBuffer;"));
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addWhite(Reference.getReference
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("Ljava/lang/StringBuffer;", "append",
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"(S)Ljava/lang/StringBuffer;"));
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addWhite(Reference.getReference
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("Ljava/lang/StringBuffer;", "append",
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"(Z)Ljava/lang/StringBuffer;"));
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addWhite(Reference.getReference
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("Ljava/lang/StringBuffer;", "append",
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"(F)Ljava/lang/StringBuffer;"));
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addWhite(Reference.getReference
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("Ljava/lang/StringBuffer;", "append",
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"(I)Ljava/lang/StringBuffer;"));
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addWhite(Reference.getReference
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("Ljava/lang/StringBuffer;", "append",
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"(J)Ljava/lang/StringBuffer;"));
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addWhite(Reference.getReference
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("Ljava/lang/StringBuffer;", "append",
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"(D)Ljava/lang/StringBuffer;"));
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addWhite(Reference.getReference
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("Ljava/lang/StringBuffer;", "toString",
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"()Ljava/lang/String;"));
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addWhite(Reference.getReference
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("Ljava/lang/String;", "<init>", "()V"));
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addWhite(Reference.getReference
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("Ljava/lang/String;", "<init>", "([C)V"));
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addWhite(Reference.getReference
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("Ljava/lang/String;", "<init>", "([CII)V"));
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addWhite(Reference.getReference
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("Ljava/lang/String;", "<init>",
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"(Ljava/lang/String;)V"));
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addWhite(Reference.getReference
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("Ljava/lang/String;", "<init>",
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"(Ljava/lang/StringBuffer;)V"));
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addWhite(Reference.getReference
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("Ljava/lang/String;", "length", "()I"));
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addWhite(Reference.getReference
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("Ljava/lang/String;", "replace",
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"(CC)Ljava/lang/String;"));
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addWhite(Reference.getReference
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("Ljava/lang/String;", "valueOf",
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"(Z)Ljava/lang/String;"));
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addWhite(Reference.getReference
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("Ljava/lang/String;", "valueOf",
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"(B)Ljava/lang/String;"));
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addWhite(Reference.getReference
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("Ljava/lang/String;", "valueOf",
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"(S)Ljava/lang/String;"));
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addWhite(Reference.getReference
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("Ljava/lang/String;", "valueOf",
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"(C)Ljava/lang/String;"));
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addWhite(Reference.getReference
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("Ljava/lang/String;", "valueOf",
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"(D)Ljava/lang/String;"));
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addWhite(Reference.getReference
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("Ljava/lang/String;", "valueOf",
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"(F)Ljava/lang/String;"));
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addWhite(Reference.getReference
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("Ljava/lang/String;", "valueOf",
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"(I)Ljava/lang/String;"));
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addWhite(Reference.getReference
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("Ljava/lang/String;", "valueOf",
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"(J)Ljava/lang/String;"));
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addWhite(Reference.getReference
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("Ljava/lang/String;", "valueOf",
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"(Ljava/lang/Object;)Ljava/lang/String;"));
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addWhite(Reference.getReference
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("Ljava/lang/String;", "substring",
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"(I)Ljava/lang/String;"));
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addWhite(Reference.getReference
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("Ljava/lang/String;", "substring",
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"(II)Ljava/lang/String;"));
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addWhite(Reference.getReference
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("Ljava.lang/reflect/Modifier;", "toString",
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"(I)Ljava/lang/String;"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "abs", "(D)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "abs", "(F)F"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "abs", "(I)I"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "abs", "(J)J"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "acos", "(D)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "asin", "(D)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "atan", "(D)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "atan2", "(D)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "ceil", "(D)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "cos", "(D)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "exp", "(D)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "floor", "(D)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "IEEEremainder", "(DD)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "log", "(D)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "max", "(DD)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "max", "(FF)F"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "max", "(II)I"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "max", "(JJ)J"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "min", "(DD)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "min", "(FF)F"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "min", "(II)I"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "min", "(JJ)J"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "pow", "(DD)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "rint", "(D)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "round", "(D)J"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "round", "(F)I"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "sin", "(D)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "sqrt", "(D)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "tan", "(D)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "toDegrees", "(D)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "toRadians", "(D)D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "E", "D"));
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addWhite(Reference.getReference
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("Ljava/lang/Math;", "PI", "D"));
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}
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private Interpreter interpreter;
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public ConstantRuntimeEnvironment() {
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interpreter = new Interpreter(this);
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}
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public Object getField(Reference ref, Object obj)
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throws InterpreterException {
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if (isWhite(ref))
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return super.getField(ref, obj);
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Type type = Type.tType(ref.getType());
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FieldIdentifier fi
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= (FieldIdentifier) Main.getClassBundle().getIdentifier(ref);
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if (fi != null && !fi.isNotConstant()) {
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Object result = fi.getConstant();
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if (result == null)
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result = type.getDefaultValue();
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return result;
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}
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throw new InterpreterException("Field " + ref + " not constant");
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}
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public void putField(Reference ref, Object obj, Object value)
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throws InterpreterException {
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throw new InterpreterException("Modifying Field " + ref + ".");
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}
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public Object invokeConstructor(Reference ref, Object[] params)
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throws InterpreterException, InvocationTargetException {
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if (isWhite(ref))
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return super.invokeConstructor(ref, params);
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throw new InterpreterException("Creating new Object " + ref + ".");
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}
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public Object invokeMethod(Reference ref, boolean isVirtual,
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Object cls, Object[] params)
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throws InterpreterException, InvocationTargetException {
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if (isWhite(ref))
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return super.invokeMethod(ref, isVirtual, cls, params);
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Type type = Type.tType(ref.getType());
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MethodIdentifier mi
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= (MethodIdentifier) Main.getClassBundle().getIdentifier(ref);
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if (mi != null) {
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BytecodeInfo code = mi.info.getBytecode();
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if (code != null)
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return interpreter.interpretMethod(code, cls, params);
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}
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throw new InterpreterException("Invoking library method " + ref + ".");
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}
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public boolean instanceOf(Object obj, String className)
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throws InterpreterException {
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Class clazz;
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try {
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clazz = Class.forName(className);
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} catch (ClassNotFoundException ex) {
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throw new InterpreterException
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("Class "+ex.getMessage()+" not found");
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}
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return obj != null && clazz.isInstance(obj);
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}
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public Object newArray(String type, int[] dimensions)
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throws InterpreterException, NegativeArraySizeException {
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if (type.length() == dimensions.length + 1) {
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Class clazz;
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try {
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clazz = Type.tType(type.substring(dimensions.length))
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.getTypeClass();
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} catch (ClassNotFoundException ex) {
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throw new InterpreterException
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("Class "+ex.getMessage()+" not found");
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}
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return Array.newInstance(clazz, dimensions);
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}
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throw new InterpreterException("Creating object array.");
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}
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public void enterMonitor(Object obj)
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throws InterpreterException {
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throw new InterpreterException("monitorenter not implemented");
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}
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public void exitMonitor(Object obj)
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throws InterpreterException {
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throw new InterpreterException("monitorenter not implemented");
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}
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}
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