| /* |
| * Copyright 2013, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package org.jf.dexlib2.analysis; |
| |
| import com.google.common.base.Supplier; |
| import com.google.common.base.Suppliers; |
| import com.google.common.cache.CacheBuilder; |
| import com.google.common.cache.CacheLoader; |
| import com.google.common.cache.LoadingCache; |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.collect.Lists; |
| import org.jf.dexlib2.Opcodes; |
| import org.jf.dexlib2.analysis.reflection.ReflectionClassDef; |
| import org.jf.dexlib2.iface.ClassDef; |
| import org.jf.dexlib2.immutable.ImmutableDexFile; |
| |
| import javax.annotation.Nonnull; |
| import java.io.IOException; |
| import java.io.Serializable; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| public class ClassPath { |
| @Nonnull private final TypeProto unknownClass; |
| @Nonnull private List<ClassProvider> classProviders; |
| private final boolean checkPackagePrivateAccess; |
| public final int oatVersion; |
| |
| public static final int NOT_ART = -1; |
| |
| /** |
| * Creates a new ClassPath instance that can load classes from the given providers |
| * |
| * @param classProviders A varargs array of ClassProviders. When loading a class, these providers will be searched |
| * in order |
| */ |
| public ClassPath(ClassProvider... classProviders) throws IOException { |
| this(Arrays.asList(classProviders), false, NOT_ART); |
| } |
| |
| /** |
| * Creates a new ClassPath instance that can load classes from the given providers |
| * |
| * @param classProviders An iterable of ClassProviders. When loading a class, these providers will be searched in |
| * order |
| */ |
| public ClassPath(Iterable<ClassProvider> classProviders) throws IOException { |
| this(classProviders, false, NOT_ART); |
| } |
| |
| /** |
| * Creates a new ClassPath instance that can load classes from the given providers |
| * |
| * @param classProviders An iterable of ClassProviders. When loading a class, these providers will be searched in |
| * order |
| * @param checkPackagePrivateAccess Whether checkPackagePrivateAccess is needed, enabled for ONLY early API 17 by |
| * default |
| * @param oatVersion The applicable oat version, or NOT_ART |
| */ |
| public ClassPath(@Nonnull Iterable<? extends ClassProvider> classProviders, boolean checkPackagePrivateAccess, |
| int oatVersion) { |
| // add fallbacks for certain special classes that must be present |
| unknownClass = new UnknownClassProto(this); |
| loadedClasses.put(unknownClass.getType(), unknownClass); |
| this.checkPackagePrivateAccess = checkPackagePrivateAccess; |
| this.oatVersion = oatVersion; |
| |
| loadPrimitiveType("Z"); |
| loadPrimitiveType("B"); |
| loadPrimitiveType("S"); |
| loadPrimitiveType("C"); |
| loadPrimitiveType("I"); |
| loadPrimitiveType("J"); |
| loadPrimitiveType("F"); |
| loadPrimitiveType("D"); |
| loadPrimitiveType("L"); |
| |
| this.classProviders = Lists.newArrayList(classProviders); |
| this.classProviders.add(getBasicClasses()); |
| } |
| |
| private void loadPrimitiveType(String type) { |
| loadedClasses.put(type, new PrimitiveProto(this, type)); |
| } |
| |
| private static ClassProvider getBasicClasses() { |
| // fallbacks for some special classes that we assume are present |
| return new DexClassProvider(new ImmutableDexFile(Opcodes.getDefault(), ImmutableSet.of( |
| new ReflectionClassDef(Class.class), |
| new ReflectionClassDef(Cloneable.class), |
| new ReflectionClassDef(Object.class), |
| new ReflectionClassDef(Serializable.class), |
| new ReflectionClassDef(String.class), |
| new ReflectionClassDef(Throwable.class)))); |
| } |
| |
| public boolean isArt() { |
| return oatVersion != NOT_ART; |
| } |
| |
| @Nonnull |
| public TypeProto getClass(@Nonnull CharSequence type) { |
| return loadedClasses.getUnchecked(type.toString()); |
| } |
| |
| private final CacheLoader<String, TypeProto> classLoader = new CacheLoader<String, TypeProto>() { |
| @Override public TypeProto load(String type) throws Exception { |
| if (type.charAt(0) == '[') { |
| return new ArrayProto(ClassPath.this, type); |
| } else { |
| return new ClassProto(ClassPath.this, type); |
| } |
| } |
| }; |
| |
| @Nonnull private LoadingCache<String, TypeProto> loadedClasses = CacheBuilder.newBuilder().build(classLoader); |
| |
| @Nonnull |
| public ClassDef getClassDef(String type) { |
| for (ClassProvider provider: classProviders) { |
| ClassDef classDef = provider.getClassDef(type); |
| if (classDef != null) { |
| return classDef; |
| } |
| } |
| throw new UnresolvedClassException("Could not resolve class %s", type); |
| } |
| |
| @Nonnull |
| public TypeProto getUnknownClass() { |
| return unknownClass; |
| } |
| |
| public boolean shouldCheckPackagePrivateAccess() { |
| return checkPackagePrivateAccess; |
| } |
| |
| private final Supplier<OdexedFieldInstructionMapper> fieldInstructionMapperSupplier = Suppliers.memoize( |
| new Supplier<OdexedFieldInstructionMapper>() { |
| @Override public OdexedFieldInstructionMapper get() { |
| return new OdexedFieldInstructionMapper(isArt()); |
| } |
| }); |
| |
| @Nonnull |
| public OdexedFieldInstructionMapper getFieldInstructionMapper() { |
| return fieldInstructionMapperSupplier.get(); |
| } |
| } |