1/* 2 * Copyright 2016, Google Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: 8 * 9 * Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * Redistributions in binary form must reproduce the above 12 * copyright notice, this list of conditions and the following disclaimer 13 * in the documentation and/or other materials provided with the 14 * distribution. 15 * Neither the name of Google Inc. nor the names of its 16 * contributors may be used to endorse or promote products derived from 17 * this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32package org.jf.baksmali; 33 34import com.beust.jcommander.JCommander; 35import com.beust.jcommander.Parameter; 36import com.beust.jcommander.Parameters; 37import com.beust.jcommander.ParametersDelegate; 38import org.jf.dexlib2.analysis.ClassProto; 39import org.jf.dexlib2.iface.ClassDef; 40import org.jf.dexlib2.iface.reference.FieldReference; 41import org.jf.util.SparseArray; 42import org.jf.util.jcommander.ExtendedParameters; 43 44import javax.annotation.Nonnull; 45import java.io.IOException; 46import java.util.List; 47 48@Parameters(commandDescription = "Lists the instance field offsets for classes in a dex file.") 49@ExtendedParameters( 50 commandName = "fieldoffsets", 51 commandAliases = { "fieldoffset", "fo" }) 52public class ListFieldOffsetsCommand extends DexInputCommand { 53 54 @Parameter(names = {"-h", "-?", "--help"}, help = true, 55 description = "Show usage information") 56 private boolean help; 57 58 @ParametersDelegate 59 private AnalysisArguments analysisArguments = new AnalysisArguments(); 60 61 public ListFieldOffsetsCommand(@Nonnull List<JCommander> commandAncestors) { 62 super(commandAncestors); 63 } 64 65 @Override public void run() { 66 if (help || inputList == null || inputList.isEmpty()) { 67 usage(); 68 return; 69 } 70 71 if (inputList.size() > 1) { 72 System.err.println("Too many files specified"); 73 usage(); 74 return; 75 } 76 77 String input = inputList.get(0); 78 loadDexFile(input); 79 BaksmaliOptions options = getOptions(); 80 81 try { 82 for (ClassDef classDef: dexFile.getClasses()) { 83 ClassProto classProto = (ClassProto) options.classPath.getClass(classDef); 84 SparseArray<FieldReference> fields = classProto.getInstanceFields(); 85 String className = "Class " + classDef.getType() + " : " + fields.size() + " instance fields\n"; 86 System.out.write(className.getBytes()); 87 for (int i=0;i<fields.size();i++) { 88 String field = fields.keyAt(i) + ":" + fields.valueAt(i).getType() + " " + fields.valueAt(i).getName() + "\n"; 89 System.out.write(field.getBytes()); 90 } 91 System.out.write("\n".getBytes()); 92 } 93 System.out.close(); 94 } catch (IOException ex) { 95 throw new RuntimeException(ex); 96 } 97 } 98 99 @Nonnull 100 private BaksmaliOptions getOptions() { 101 if (dexFile == null) { 102 throw new IllegalStateException("You must call loadDexFile first"); 103 } 104 105 final BaksmaliOptions options = new BaksmaliOptions(); 106 107 options.apiLevel = apiLevel; 108 109 try { 110 options.classPath = analysisArguments.loadClassPathForDexFile( 111 inputFile.getAbsoluteFile().getParentFile(), dexFile, false); 112 } catch (Exception ex) { 113 System.err.println("Error occurred while loading class path files."); 114 ex.printStackTrace(System.err); 115 System.exit(-1); 116 } 117 118 return options; 119 } 120} 121