1 /* 2 * Copyright 2013, 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 32 package org.jf.dexlib2.dexbacked.raw; 33 34 import org.jf.dexlib2.dexbacked.DexBackedDexFile; 35 import org.jf.dexlib2.dexbacked.raw.util.DexAnnotator; 36 import org.jf.dexlib2.util.AnnotatedBytes; 37 38 import javax.annotation.Nonnull; 39 import javax.annotation.Nullable; 40 41 public class FieldIdItem { 42 public static final int ITEM_SIZE = 8; 43 44 public static final int CLASS_OFFSET = 0; 45 public static final int TYPE_OFFSET = 2; 46 public static final int NAME_OFFSET = 4; 47 48 @Nonnull makeAnnotator(@onnull DexAnnotator annotator, @Nonnull MapItem mapItem)49 public static SectionAnnotator makeAnnotator(@Nonnull DexAnnotator annotator, @Nonnull MapItem mapItem) { 50 return new SectionAnnotator(annotator, mapItem) { 51 @Nonnull @Override public String getItemName() { 52 return "field_id_item"; 53 } 54 55 @Override 56 protected void annotateItem(@Nonnull AnnotatedBytes out, int itemIndex, @Nullable String itemIdentity) { 57 int classIndex = dexFile.readUshort(out.getCursor()); 58 out.annotate(2, "class_idx = %s", TypeIdItem.getReferenceAnnotation(dexFile, classIndex)); 59 60 int typeIndex = dexFile.readUshort(out.getCursor()); 61 out.annotate(2, "return_type_idx = %s", TypeIdItem.getReferenceAnnotation(dexFile, typeIndex)); 62 63 int nameIndex = dexFile.readSmallUint(out.getCursor()); 64 out.annotate(4, "name_idx = %s", StringIdItem.getReferenceAnnotation(dexFile, nameIndex)); 65 } 66 }; 67 } 68 69 @Nonnull 70 public static String asString(@Nonnull DexBackedDexFile dexFile, int fieldIndex) { 71 int fieldOffset = dexFile.getFieldIdItemOffset(fieldIndex); 72 int classIndex = dexFile.readUshort(fieldOffset + CLASS_OFFSET); 73 String classType = dexFile.getType(classIndex); 74 75 int typeIndex = dexFile.readUshort(fieldOffset + TYPE_OFFSET); 76 String fieldType = dexFile.getType(typeIndex); 77 78 int nameIndex = dexFile.readSmallUint(fieldOffset + NAME_OFFSET); 79 String fieldName = dexFile.getString(nameIndex); 80 81 return String.format("%s->%s:%s", classType, fieldName, fieldType); 82 } 83 84 @Nonnull 85 public static String getReferenceAnnotation(@Nonnull DexBackedDexFile dexFile, int fieldIndex) { 86 try { 87 String fieldString = asString(dexFile, fieldIndex); 88 return String.format("field_id_item[%d]: %s", fieldIndex, fieldString); 89 } catch (Exception ex) { 90 ex.printStackTrace(System.err); 91 } 92 return String.format("field_id_item[%d]", fieldIndex); 93 } 94 95 public static String[] getFields(@Nonnull RawDexFile dexFile) { 96 MapItem mapItem = dexFile.getMapItemForSection(ItemType.FIELD_ID_ITEM); 97 if (mapItem == null) { 98 return new String[0]; 99 } 100 101 int fieldCount = mapItem.getItemCount(); 102 String[] ret = new String[fieldCount]; 103 for (int i=0; i<fieldCount; i++) { 104 ret[i] = asString(dexFile, i); 105 } 106 return ret; 107 } 108 } 109