1 /* 2 * [The "BSD licence"] 3 * Copyright (c) 2010 Ben Gruver (JesusFreke) 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 29 package org.jf.baksmali; 30 31 import org.jf.baksmali.Adaptors.ClassDefinition; 32 import org.jf.dexlib.ClassDefItem; 33 import org.jf.dexlib.Code.Analysis.ClassPath; 34 import org.jf.dexlib.Code.Analysis.SyntheticAccessorResolver; 35 import org.jf.dexlib.DexFile; 36 import org.jf.util.ClassFileNameHandler; 37 import org.jf.util.IndentingWriter; 38 39 import java.io.*; 40 import java.util.ArrayList; 41 import java.util.Collections; 42 import java.util.Comparator; 43 import java.util.regex.Matcher; 44 import java.util.regex.Pattern; 45 46 public class baksmali { 47 public static boolean noParameterRegisters = false; 48 public static boolean useLocalsDirective = false; 49 public static boolean useSequentialLabels = false; 50 public static boolean outputDebugInfo = true; 51 public static boolean addCodeOffsets = false; 52 public static boolean noAccessorComments = false; 53 public static boolean deodex = false; 54 public static boolean verify = false; 55 public static int registerInfo = 0; 56 public static String bootClassPath; 57 58 public static SyntheticAccessorResolver syntheticAccessorResolver = null; 59 60 public static void disassembleDexFile(String dexFilePath, DexFile dexFile, boolean deodex, String outputDirectory, 61 String[] classPathDirs, String bootClassPath, String extraBootClassPath, 62 boolean noParameterRegisters, boolean useLocalsDirective, 63 boolean useSequentialLabels, boolean outputDebugInfo, boolean addCodeOffsets, 64 boolean noAccessorComments, int registerInfo, boolean verify, 65 boolean ignoreErrors) 66 { 67 baksmali.noParameterRegisters = noParameterRegisters; 68 baksmali.useLocalsDirective = useLocalsDirective; 69 baksmali.useSequentialLabels = useSequentialLabels; 70 baksmali.outputDebugInfo = outputDebugInfo; 71 baksmali.addCodeOffsets = addCodeOffsets; 72 baksmali.noAccessorComments = noAccessorComments; 73 baksmali.deodex = deodex; 74 baksmali.registerInfo = registerInfo; 75 baksmali.bootClassPath = bootClassPath; 76 baksmali.verify = verify; 77 78 ClassPath.ClassPathErrorHandler classPathErrorHandler = null; 79 if (ignoreErrors) { 80 classPathErrorHandler = new ClassPath.ClassPathErrorHandler() { 81 public void ClassPathError(String className, Exception ex) { 82 System.err.println(String.format("Skipping %s", className)); 83 ex.printStackTrace(System.err); 84 } 85 }; 86 } 87 88 if (registerInfo != 0 || deodex || verify) { 89 try { 90 String[] extraBootClassPathArray = null; 91 if (extraBootClassPath != null && extraBootClassPath.length() > 0) { 92 assert extraBootClassPath.charAt(0) == ':'; 93 extraBootClassPathArray = extraBootClassPath.substring(1).split(":"); 94 } 95 96 if (dexFile.isOdex() && bootClassPath == null) { 97 //ext.jar is a special case - it is typically the 2nd jar in the boot class path, but it also 98 //depends on classes in framework.jar (typically the 3rd jar in the BCP). If the user didn't 99 //specify a -c option, we should add framework.jar to the boot class path by default, so that it 100 //"just works" 101 if (extraBootClassPathArray == null && isExtJar(dexFilePath)) { 102 extraBootClassPathArray = new String[] {"framework.jar"}; 103 } 104 ClassPath.InitializeClassPathFromOdex(classPathDirs, extraBootClassPathArray, dexFilePath, dexFile, 105 classPathErrorHandler); 106 } else { 107 String[] bootClassPathArray = null; 108 if (bootClassPath != null) { 109 bootClassPathArray = bootClassPath.split(":"); 110 } 111 ClassPath.InitializeClassPath(classPathDirs, bootClassPathArray, extraBootClassPathArray, 112 dexFilePath, dexFile, classPathErrorHandler); 113 } 114 } catch (Exception ex) { 115 System.err.println("\n\nError occured while loading boot class path files. Aborting."); 116 ex.printStackTrace(System.err); 117 System.exit(1); 118 } 119 } 120 121 File outputDirectoryFile = new File(outputDirectory); 122 if (!outputDirectoryFile.exists()) { 123 if (!outputDirectoryFile.mkdirs()) { 124 System.err.println("Can't create the output directory " + outputDirectory); 125 System.exit(1); 126 } 127 } 128 129 if (!noAccessorComments) { 130 syntheticAccessorResolver = new SyntheticAccessorResolver(dexFile); 131 } 132 133 //sort the classes, so that if we're on a case-insensitive file system and need to handle classes with file 134 //name collisions, then we'll use the same name for each class, if the dex file goes through multiple 135 //baksmali/smali cycles for some reason. If a class with a colliding name is added or removed, the filenames 136 //may still change of course 137 ArrayList<ClassDefItem> classDefItems = new ArrayList<ClassDefItem>(dexFile.ClassDefsSection.getItems()); 138 Collections.sort(classDefItems, new Comparator<ClassDefItem>() { 139 public int compare(ClassDefItem classDefItem1, ClassDefItem classDefItem2) { 140 return classDefItem1.getClassType().getTypeDescriptor().compareTo(classDefItem1.getClassType().getTypeDescriptor()); 141 } 142 }); 143 144 ClassFileNameHandler fileNameHandler = new ClassFileNameHandler(outputDirectoryFile, ".smali"); 145 146 for (ClassDefItem classDefItem: classDefItems) { 147 /** 148 * The path for the disassembly file is based on the package name 149 * The class descriptor will look something like: 150 * Ljava/lang/Object; 151 * Where the there is leading 'L' and a trailing ';', and the parts of the 152 * package name are separated by '/' 153 */ 154 155 if (registerInfo != 0 || deodex || verify) { 156 //If we are analyzing the bytecode, make sure that this class is loaded into the ClassPath. If it isn't 157 //then there was some error while loading it, and we should skip it 158 ClassPath.ClassDef classDef = ClassPath.getClassDef(classDefItem.getClassType(), false); 159 if (classDef == null || classDef instanceof ClassPath.UnresolvedClassDef) { 160 continue; 161 } 162 } 163 164 String classDescriptor = classDefItem.getClassType().getTypeDescriptor(); 165 166 //validate that the descriptor is formatted like we expect 167 if (classDescriptor.charAt(0) != 'L' || 168 classDescriptor.charAt(classDescriptor.length()-1) != ';') { 169 System.err.println("Unrecognized class descriptor - " + classDescriptor + " - skipping class"); 170 continue; 171 } 172 173 File smaliFile = fileNameHandler.getUniqueFilenameForClass(classDescriptor); 174 175 //create and initialize the top level string template 176 ClassDefinition classDefinition = new ClassDefinition(classDefItem); 177 178 //write the disassembly 179 Writer writer = null; 180 try 181 { 182 File smaliParent = smaliFile.getParentFile(); 183 if (!smaliParent.exists()) { 184 if (!smaliParent.mkdirs()) { 185 System.err.println("Unable to create directory " + smaliParent.toString() + " - skipping class"); 186 continue; 187 } 188 } 189 190 if (!smaliFile.exists()){ 191 if (!smaliFile.createNewFile()) { 192 System.err.println("Unable to create file " + smaliFile.toString() + " - skipping class"); 193 continue; 194 } 195 } 196 197 BufferedWriter bufWriter = new BufferedWriter(new OutputStreamWriter( 198 new FileOutputStream(smaliFile), "UTF8")); 199 200 writer = new IndentingWriter(bufWriter); 201 classDefinition.writeTo((IndentingWriter)writer); 202 } catch (Exception ex) { 203 System.err.println("\n\nError occured while disassembling class " + classDescriptor.replace('/', '.') + " - skipping class"); 204 ex.printStackTrace(); 205 } 206 finally 207 { 208 if (writer != null) { 209 try { 210 writer.close(); 211 } catch (Throwable ex) { 212 System.err.println("\n\nError occured while closing file " + smaliFile.toString()); 213 ex.printStackTrace(); 214 } 215 } 216 } 217 218 if (!ignoreErrors && classDefinition.hadValidationErrors()) { 219 System.exit(1); 220 } 221 } 222 } 223 224 private static final Pattern extJarPattern = Pattern.compile("(?:^|\\\\|/)ext.(?:jar|odex)$"); 225 private static boolean isExtJar(String dexFilePath) { 226 Matcher m = extJarPattern.matcher(dexFilePath); 227 return m.find(); 228 } 229 } 230
