baksmali.java revision c9be5e13034da9827b5598a6257376164745b827
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 verboseRegisterInfo = false; 49 public static String bootClassPath; 50 public static DeodexUtil deodexUtil = null; 51 52 public static void disassembleDexFile(DexFile dexFile, Deodexerant deodexerant, String outputDirectory, 53 String bootClassPath, boolean noParameterRegisters, 54 boolean useLocalsDirective, boolean useSequentialLabels, 55 boolean outputDebugInfo, boolean verboseRegisterInfo) 56 { 57 baksmali.noParameterRegisters = noParameterRegisters; 58 baksmali.useLocalsDirective = useLocalsDirective; 59 baksmali.useSequentialLabels = useSequentialLabels; 60 baksmali.outputDebugInfo = outputDebugInfo; 61 baksmali.verboseRegisterInfo = verboseRegisterInfo; 62 baksmali.bootClassPath = bootClassPath; 63 64 if (verboseRegisterInfo) { 65 ClassPath.InitializeClassPath(bootClassPath==null?null:bootClassPath.split(":"), dexFile); 66 } 67 68 if (deodexerant != null) { 69 baksmali.deodexUtil = new DeodexUtil(deodexerant); 70 } 71 72 File outputDirectoryFile = new File(outputDirectory); 73 if (!outputDirectoryFile.exists()) { 74 if (!outputDirectoryFile.mkdirs()) { 75 System.err.println("Can't create the output directory " + outputDirectory); 76 System.exit(1); 77 } 78 } 79 80 //load and initialize the templates 81 InputStream templateStream = baksmali.class.getClassLoader().getResourceAsStream("templates/baksmali.stg"); 82 StringTemplateGroup templates = new StringTemplateGroup(new InputStreamReader(templateStream)); 83 templates.registerRenderer(Long.class, new LongRenderer()); 84 templates.registerRenderer(Integer.class, new IntegerRenderer()); 85 templates.registerRenderer(Short.class, new ShortRenderer()); 86 templates.registerRenderer(Byte.class, new ByteRenderer()); 87 templates.registerRenderer(Float.class, new FloatRenderer()); 88 templates.registerRenderer(Character.class, new CharRenderer()); 89 templates.registerRenderer(StringIdItem.class, new StringIdItemRenderer()); 90 91 92 for (ClassDefItem classDefItem: dexFile.ClassDefsSection.getItems()) { 93 /** 94 * The path for the disassembly file is based on the package name 95 * The class descriptor will look something like: 96 * Ljava/lang/Object; 97 * Where the there is leading 'L' and a trailing ';', and the parts of the 98 * package name are separated by '/' 99 */ 100 101 String classDescriptor = classDefItem.getClassType().getTypeDescriptor(); 102 103 //validate that the descriptor is formatted like we expect 104 if (classDescriptor.charAt(0) != 'L' || 105 classDescriptor.charAt(classDescriptor.length()-1) != ';') { 106 System.err.println("Unrecognized class descriptor - " + classDescriptor + " - skipping class"); 107 continue; 108 } 109 110 //trim off the leading L and trailing ; 111 classDescriptor = classDescriptor.substring(1, classDescriptor.length()-1); 112 113 //trim off the leading 'L' and trailing ';', and get the individual package elements 114 String[] pathElements = classDescriptor.split("/"); 115 116 //build the path to the smali file to generate for this class 117 StringBuilder smaliPath = new StringBuilder(outputDirectory); 118 for (String pathElement: pathElements) { 119 smaliPath.append(File.separatorChar); 120 smaliPath.append(pathElement); 121 } 122 smaliPath.append(".smali"); 123 124 File smaliFile = new File(smaliPath.toString()); 125 126 //create and initialize the top level string template 127 ClassDefinition classDefinition = new ClassDefinition(templates, classDefItem); 128 129 StringTemplate smaliFileST = classDefinition.createTemplate(); 130 131 //generate the disassembly 132 String output = smaliFileST.toString(); 133 134 //write the disassembly 135 FileWriter writer = null; 136 try 137 { 138 File smaliParent = smaliFile.getParentFile(); 139 if (!smaliParent.exists()) { 140 if (!smaliParent.mkdirs()) { 141 System.err.println("Unable to create directory " + smaliParent.toString() + " - skipping class"); 142 continue; 143 } 144 } 145 146 if (!smaliFile.exists()){ 147 if (!smaliFile.createNewFile()) { 148 System.err.println("Unable to create file " + smaliFile.toString() + " - skipping class"); 149 continue; 150 } 151 } 152 153 writer = new FileWriter(smaliFile); 154 writer.write(output); 155 } catch (Throwable ex) { 156 System.err.println("\n\nError occured while disassembling class " + classDescriptor.replace('/', '.') + " - skipping class"); 157 ex.printStackTrace(); 158 } 159 finally 160 { 161 if (writer != null) { 162 try { 163 writer.close(); 164 } catch (Throwable ex) { 165 System.err.println("\n\nError occured while closing file " + smaliFile.toString()); 166 ex.printStackTrace(); 167 } 168 } 169 } 170 171 //TODO: GROT 172 if (classDefinition.hadValidationErrors()) { 173 System.exit(1); 174 } 175 } 176 } 177} 178