baksmali.java revision 819e8b92a060a79b63fcdbd2d614786d758bfefb
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.Renderers.*; 35import org.jf.dexlib.Code.Analysis.ClassPath; 36import org.jf.dexlib.DexFile; 37import org.jf.dexlib.ClassDefItem; 38import org.jf.dexlib.StringIdItem; 39 40import java.io.*; 41 42public class baksmali { 43 public static boolean noParameterRegisters = false; 44 public static boolean useLocalsDirective = false; 45 public static boolean useSequentialLabels = false; 46 public static boolean outputDebugInfo = true; 47 public static boolean addCodeOffsets = false; 48 public static boolean deodex = false; 49 public static int registerInfo = 0; 50 public static String bootClassPath; 51 52 public static void disassembleDexFile(DexFile dexFile, boolean deodex, String outputDirectory, 53 String[] classPathDirs, String bootClassPath, boolean noParameterRegisters, 54 boolean useLocalsDirective, boolean useSequentialLabels, 55 boolean outputDebugInfo, boolean addCodeOffsets, int registerInfo) 56 { 57 baksmali.noParameterRegisters = noParameterRegisters; 58 baksmali.useLocalsDirective = useLocalsDirective; 59 baksmali.useSequentialLabels = useSequentialLabels; 60 baksmali.outputDebugInfo = outputDebugInfo; 61 baksmali.addCodeOffsets = addCodeOffsets; 62 baksmali.deodex = deodex; 63 baksmali.registerInfo = registerInfo; 64 baksmali.bootClassPath = bootClassPath; 65 66 if (registerInfo != 0 || deodex) { 67 try { 68 ClassPath.InitializeClassPath(classPathDirs, bootClassPath==null?null:bootClassPath.split(":"), dexFile); 69 } catch (Exception ex) { 70 System.err.println("\n\nError occured while loading boot class path files. Aborting."); 71 ex.printStackTrace(System.err); 72 System.exit(1); 73 } 74 } 75 76 File outputDirectoryFile = new File(outputDirectory); 77 if (!outputDirectoryFile.exists()) { 78 if (!outputDirectoryFile.mkdirs()) { 79 System.err.println("Can't create the output directory " + outputDirectory); 80 System.exit(1); 81 } 82 } 83 84 //load and initialize the templates 85 InputStream templateStream = baksmali.class.getClassLoader().getResourceAsStream("templates/baksmali.stg"); 86 StringTemplateGroup templates = new StringTemplateGroup(new InputStreamReader(templateStream)); 87 templates.registerRenderer(Long.class, new LongRenderer()); 88 templates.registerRenderer(Integer.class, new IntegerRenderer()); 89 templates.registerRenderer(Short.class, new ShortRenderer()); 90 templates.registerRenderer(Byte.class, new ByteRenderer()); 91 templates.registerRenderer(Float.class, new FloatRenderer()); 92 templates.registerRenderer(Character.class, new CharRenderer()); 93 templates.registerRenderer(StringIdItem.class, new StringIdItemRenderer()); 94 95 96 for (ClassDefItem classDefItem: dexFile.ClassDefsSection.getItems()) { 97 /** 98 * The path for the disassembly file is based on the package name 99 * The class descriptor will look something like: 100 * Ljava/lang/Object; 101 * Where the there is leading 'L' and a trailing ';', and the parts of the 102 * package name are separated by '/' 103 */ 104 105 String classDescriptor = classDefItem.getClassType().getTypeDescriptor(); 106 107 //validate that the descriptor is formatted like we expect 108 if (classDescriptor.charAt(0) != 'L' || 109 classDescriptor.charAt(classDescriptor.length()-1) != ';') { 110 System.err.println("Unrecognized class descriptor - " + classDescriptor + " - skipping class"); 111 continue; 112 } 113 114 //trim off the leading L and trailing ; 115 classDescriptor = classDescriptor.substring(1, classDescriptor.length()-1); 116 117 //trim off the leading 'L' and trailing ';', and get the individual package elements 118 String[] pathElements = classDescriptor.split("/"); 119 120 //build the path to the smali file to generate for this class 121 StringBuilder smaliPath = new StringBuilder(outputDirectory); 122 for (String pathElement: pathElements) { 123 smaliPath.append(File.separatorChar); 124 smaliPath.append(pathElement); 125 } 126 smaliPath.append(".smali"); 127 128 File smaliFile = new File(smaliPath.toString()); 129 130 //create and initialize the top level string template 131 ClassDefinition classDefinition = new ClassDefinition(templates, classDefItem); 132 133 StringTemplate smaliFileST = classDefinition.createTemplate(); 134 135 //generate the disassembly 136 String output = smaliFileST.toString(); 137 138 //write the disassembly 139 FileWriter writer = null; 140 try 141 { 142 File smaliParent = smaliFile.getParentFile(); 143 if (!smaliParent.exists()) { 144 if (!smaliParent.mkdirs()) { 145 System.err.println("Unable to create directory " + smaliParent.toString() + " - skipping class"); 146 continue; 147 } 148 } 149 150 if (!smaliFile.exists()){ 151 if (!smaliFile.createNewFile()) { 152 System.err.println("Unable to create file " + smaliFile.toString() + " - skipping class"); 153 continue; 154 } 155 } 156 157 writer = new FileWriter(smaliFile); 158 writer.write(output); 159 } catch (Exception ex) { 160 System.err.println("\n\nError occured while disassembling class " + classDescriptor.replace('/', '.') + " - skipping class"); 161 ex.printStackTrace(); 162 } 163 finally 164 { 165 if (writer != null) { 166 try { 167 writer.close(); 168 } catch (Throwable ex) { 169 System.err.println("\n\nError occured while closing file " + smaliFile.toString()); 170 ex.printStackTrace(); 171 } 172 } 173 } 174 175 //TODO: GROT 176 if (classDefinition.hadValidationErrors()) { 177 System.exit(1); 178 } 179 } 180 } 181} 182