1 /* 2 * Copyright 2015, 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.analysis; 33 34 import org.jf.dexlib2.AccessFlags; 35 import org.jf.dexlib2.analysis.util.TypeProtoUtils; 36 import org.jf.dexlib2.iface.ClassDef; 37 import org.jf.dexlib2.iface.Method; 38 import org.jf.dexlib2.util.MethodUtil; 39 import org.jf.dexlib2.util.TypeUtils; 40 41 import javax.annotation.Nonnull; 42 43 public class AnalyzedMethodUtil { canAccess(@onnull TypeProto type, @Nonnull Method virtualMethod, boolean checkPackagePrivate, boolean checkProtected, boolean checkClass)44 public static boolean canAccess(@Nonnull TypeProto type, @Nonnull Method virtualMethod, boolean checkPackagePrivate, 45 boolean checkProtected, boolean checkClass) { 46 if (checkPackagePrivate && MethodUtil.isPackagePrivate(virtualMethod)) { 47 String otherPackage = TypeUtils.getPackage(virtualMethod.getDefiningClass()); 48 String thisPackage = TypeUtils.getPackage(type.getType()); 49 if (!otherPackage.equals(thisPackage)) { 50 return false; 51 } 52 } 53 54 if (checkProtected && (virtualMethod.getAccessFlags() & AccessFlags.PROTECTED.getValue()) != 0) { 55 if (!TypeProtoUtils.extendsFrom(type, virtualMethod.getDefiningClass())) { 56 return false; 57 } 58 } 59 60 if (checkClass) { 61 ClassPath classPath = type.getClassPath(); 62 ClassDef methodClassDef = classPath.getClassDef(virtualMethod.getDefiningClass()); 63 if (!TypeUtils.canAccessClass(type.getType(), methodClassDef)) { 64 return false; 65 } 66 } 67 68 return true; 69 } 70 } 71