baksmali.java revision 2bdbf739bfd935877e463bc36df0e446b1dfb09f
1/* 2 * [The "BSD licence"] 3 * Copyright (c) 2009 Ben Gruver 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29package org.jf.baksmali; 30 31import org.antlr.stringtemplate.StringTemplate; 32import org.antlr.stringtemplate.StringTemplateGroup; 33import org.jf.baksmali.Adaptors.ClassDefinition; 34import org.jf.baksmali.Deodex.*; 35import org.jf.baksmali.Renderers.*; 36import org.jf.dexlib.Code.Analysis.ClassPath; 37import org.jf.dexlib.DexFile; 38import org.jf.dexlib.ClassDefItem; 39import org.jf.dexlib.StringIdItem; 40 41import java.io.*; 42 43public class baksmali { 44 public static boolean noParameterRegisters = false; 45 public static boolean useLocalsDirective = false; 46 public static boolean useSequentialLabels = false; 47 public static boolean outputDebugInfo = true; 48 public static boolean addCodeOffsets = false; 49 public static int registerInfo = 0; 50 public static String bootClassPath; 51 public static DeodexUtil deodexUtil = null; 52 53 public static void disassembleDexFile(DexFile dexFile, Deodexerant deodexerant, String outputDirectory, 54 String bootClassPathDir, String bootClassPath, boolean noParameterRegisters, 55 boolean useLocalsDirective, boolean useSequentialLabels, 56 boolean outputDebugInfo, boolean addCodeOffsets, int registerInfo) 57 { 58 baksmali.noParameterRegisters = noParameterRegisters; 59 baksmali.useLocalsDirective = useLocalsDirective; 60 baksmali.useSequentialLabels = useSequentialLabels; 61 baksmali.outputDebugInfo = outputDebugInfo; 62 baksmali.addCodeOffsets = addCodeOffsets; 63 baksmali.registerInfo = registerInfo; 64 baksmali.bootClassPath = bootClassPath; 65 66 if (registerInfo != 0) { 67 ClassPath.InitializeClassPath(bootClassPathDir, bootClassPath==null?null:bootClassPath.split(":"), dexFile); 68 } 69 70 if (deodexerant != null) { 71 baksmali.deodexUtil = new DeodexUtil(deodexerant); 72 } 73 74 File outputDirectoryFile = new File(outputDirectory); 75 if (!outputDirectoryFile.exists()) { 76 if (!outputDirectoryFile.mkdirs()) { 77 System.err.println("Can't create the output directory " + outputDirectory); 78 System.exit(1); 79 } 80 } 81 82 //load and initialize the templates 83 InputStream templateStream = baksmali.class.getClassLoader().getResourceAsStream("templates/baksmali.stg"); 84 StringTemplateGroup templates = new StringTemplateGroup(new InputStreamReader(templateStream)); 85 templates.registerRenderer(Long.class, new LongRenderer()); 86 templates.registerRenderer(Integer.class, new IntegerRenderer()); 87 templates.registerRenderer(Short.class, new ShortRenderer()); 88 templates.registerRenderer(Byte.class, new ByteRenderer()); 89 templates.registerRenderer(Float.class, new FloatRenderer()); 90 templates.registerRenderer(Character.class, new CharRenderer()); 91 templates.registerRenderer(StringIdItem.class, new StringIdItemRenderer()); 92 93 94 for (ClassDefItem classDefItem: dexFile.ClassDefsSection.getItems()) { 95 /** 96 * The path for the disassembly file is based on the package name 97 * The class descriptor will look something like: 98 * Ljava/lang/Object; 99 * Where the there is leading 'L' and a trailing ';', and the parts of the 100 * package name are separated by '/' 101 */ 102 103 String classDescriptor = classDefItem.getClassType().getTypeDescriptor(); 104 105 //validate that the descriptor is formatted like we expect 106 if (classDescriptor.charAt(0) != 'L' || 107 classDescriptor.charAt(classDescriptor.length()-1) != ';') { 108 System.err.println("Unrecognized class descriptor - " + classDescriptor + " - skipping class"); 109 continue; 110 } 111 112 //trim off the leading L and trailing ; 113 classDescriptor = classDescriptor.substring(1, classDescriptor.length()-1); 114 115 //trim off the leading 'L' and trailing ';', and get the individual package elements 116 String[] pathElements = classDescriptor.split("/"); 117 118 //build the path to the smali file to generate for this class 119 StringBuilder smaliPath = new StringBuilder(outputDirectory); 120 for (String pathElement: pathElements) { 121 smaliPath.append(File.separatorChar); 122 smaliPath.append(pathElement); 123 } 124 smaliPath.append(".smali"); 125 126 File smaliFile = new File(smaliPath.toString()); 127 128 //create and initialize the top level string template 129 ClassDefinition classDefinition = new ClassDefinition(templates, classDefItem); 130 131 StringTemplate smaliFileST = classDefinition.createTemplate(); 132 133 //generate the disassembly 134 String output = smaliFileST.toString(); 135 136 //write the disassembly 137 FileWriter writer = null; 138 try 139 { 140 File smaliParent = smaliFile.getParentFile(); 141 if (!smaliParent.exists()) { 142 if (!smaliParent.mkdirs()) { 143 System.err.println("Unable to create directory " + smaliParent.toString() + " - skipping class"); 144 continue; 145 } 146 } 147 148 if (!smaliFile.exists()){ 149 if (!smaliFile.createNewFile()) { 150 System.err.println("Unable to create file " + smaliFile.toString() + " - skipping class"); 151 continue; 152 } 153 } 154 155 writer = new FileWriter(smaliFile); 156 writer.write(output); 157 } catch (Throwable ex) { 158 System.err.println("\n\nError occured while disassembling class " + classDescriptor.replace('/', '.') + " - skipping class"); 159 ex.printStackTrace(); 160 } 161 finally 162 { 163 if (writer != null) { 164 try { 165 writer.close(); 166 } catch (Throwable ex) { 167 System.err.println("\n\nError occured while closing file " + smaliFile.toString()); 168 ex.printStackTrace(); 169 } 170 } 171 } 172 173 //TODO: GROT 174 if (classDefinition.hadValidationErrors()) { 175 System.exit(1); 176 } 177 } 178 } 179} 180