1b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/* 2b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * ProGuard -- shrinking, optimization, obfuscation, and preverification 3b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * of Java bytecode. 4b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 52270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom * Copyright (c) 2002-2014 Eric Lafortune (eric@graphics.cornell.edu) 6b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 7b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This program is free software; you can redistribute it and/or modify it 8b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * under the terms of the GNU General Public License as published by the Free 9b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Software Foundation; either version 2 of the License, or (at your option) 10b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * any later version. 11b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 12b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This program is distributed in the hope that it will be useful, but WITHOUT 13b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * more details. 16b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 17b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * You should have received a copy of the GNU General Public License along 18b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * with this program; if not, write to the Free Software Foundation, Inc., 19b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 21b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratopackage proguard.obfuscate; 22b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 23b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.*; 24b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.attribute.*; 25b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.attribute.visitor.*; 262270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstromimport proguard.classfile.constant.ClassConstant; 272270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstromimport proguard.classfile.constant.visitor.ConstantVisitor; 282270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstromimport proguard.classfile.util.*; 29b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.visitor.*; 30b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 31b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 32b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/** 33b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This <code>ClassVisitor</code> and <code>MemberVisitor</code> 34b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * marks names of the classes and class members it visits. The marked names 35b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * will remain unchanged in the obfuscation step. 36b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 37b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @see ClassObfuscator 38b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @see MemberObfuscator 39b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 40b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @author Eric Lafortune 41b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 42b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoclass NameMarker 43b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoextends SimplifiedVisitor 44b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimplements ClassVisitor, 45b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato MemberVisitor, 46b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato AttributeVisitor, 47b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato InnerClassesInfoVisitor, 48b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato ConstantVisitor 49b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato{ 50b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for ClassVisitor. 51b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 52b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitProgramClass(ProgramClass programClass) 53b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 54b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato keepClassName(programClass); 55b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 56b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Make sure any outer class names are kept as well. 57b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato programClass.attributesAccept(this); 58b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 59b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 60b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 61b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitLibraryClass(LibraryClass libraryClass) 62b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 63b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato keepClassName(libraryClass); 64b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 65b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 66b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 67b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for MemberVisitor. 68b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 69b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitProgramField(ProgramClass programClass, ProgramField programField) 70b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 71b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato keepFieldName(programClass, programField); 72b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 73b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 74b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 75b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod) 76b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 77b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato keepMethodName(programClass, programMethod); 78b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 79b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 80b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 81b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitLibraryField(LibraryClass libraryClass, LibraryField libraryField) 82b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 83b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato keepFieldName(libraryClass, libraryField); 84b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 85b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 86b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 87b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitLibraryMethod(LibraryClass libraryClass, LibraryMethod libraryMethod) 88b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 89b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato keepMethodName(libraryClass, libraryMethod); 90b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 91b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 92b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 93b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for AttributeVisitor. 94b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 95b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitAnyAttribute(Clazz clazz, Attribute attribute) {} 96b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 97b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 98b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitInnerClassesAttribute(Clazz clazz, InnerClassesAttribute innerClassesAttribute) 99b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 100b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Make sure the outer class names are kept as well. 101b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato innerClassesAttribute.innerClassEntriesAccept(clazz, this); 102b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 103b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 104b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 105b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for InnerClassesInfoVisitor. 106b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 107b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitInnerClassesInfo(Clazz clazz, InnerClassesInfo innerClassesInfo) 108b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 109b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Make sure the outer class name is kept as well. 110b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato int innerClassIndex = innerClassesInfo.u2innerClassIndex; 111b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato int outerClassIndex = innerClassesInfo.u2outerClassIndex; 112b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (innerClassIndex != 0 && 113b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato outerClassIndex != 0 && 114b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato clazz.getClassName(innerClassIndex).equals(clazz.getName())) 115b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 116b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato clazz.constantPoolEntryAccept(outerClassIndex, this); 117b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 118b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 119b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 120b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 121b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for ConstantVisitor. 122b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 123b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitClassConstant(Clazz clazz, ClassConstant classConstant) 124b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 125b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Make sure the outer class name is kept as well. 126b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato classConstant.referencedClassAccept(this); 127b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 128b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 129b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 130b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Small utility method. 131b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 132b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 133b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Ensures the name of the given class name will be kept. 134b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 135b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void keepClassName(Clazz clazz) 136b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 137b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato ClassObfuscator.setNewClassName(clazz, 138b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato clazz.getName()); 139b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 140b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 141b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 142b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 143b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Ensures the name of the given field name will be kept. 144b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 145b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato private void keepFieldName(Clazz clazz, Field field) 146b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 147b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato MemberObfuscator.setFixedNewMemberName(field, 148b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato field.getName(clazz)); 149b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 150b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 151b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 152b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 153b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Ensures the name of the given method name will be kept. 154b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 155b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato private void keepMethodName(Clazz clazz, Method method) 156b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 157b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato String name = method.getName(clazz); 158b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 1592270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom if (!ClassUtil.isInitializer(name)) 160b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 1612270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom MemberObfuscator.setFixedNewMemberName(method, name); 162b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 163b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 164b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato} 165