104 lines
4.1 KiB
C++
104 lines
4.1 KiB
C++
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "java_lang_VMClassLoader.h"
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#include "class_linker.h"
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#include "jni_internal.h"
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#include "mirror/class_loader.h"
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#include "mirror/object-inl.h"
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#include "scoped_fast_native_object_access.h"
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#include "ScopedUtfChars.h"
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#include "zip_archive.h"
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namespace art {
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static jclass VMClassLoader_findLoadedClass(JNIEnv* env, jclass, jobject javaLoader,
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jstring javaName) {
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ScopedFastNativeObjectAccess soa(env);
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mirror::ClassLoader* loader = soa.Decode<mirror::ClassLoader*>(javaLoader);
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ScopedUtfChars name(env, javaName);
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if (name.c_str() == nullptr) {
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return nullptr;
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}
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ClassLinker* cl = Runtime::Current()->GetClassLinker();
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std::string descriptor(DotToDescriptor(name.c_str()));
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const size_t descriptor_hash = ComputeModifiedUtf8Hash(descriptor.c_str());
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mirror::Class* c = cl->LookupClass(soa.Self(), descriptor.c_str(), descriptor_hash, loader);
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if (c != nullptr && c->IsResolved()) {
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return soa.AddLocalReference<jclass>(c);
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}
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// If class is erroneous, throw the earlier failure, wrapped in certain cases. See b/28787733.
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if (c != nullptr && c->IsErroneous()) {
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cl->ThrowEarlierClassFailure(c);
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Thread* self = soa.Self();
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mirror::Class* eiie_class =
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self->DecodeJObject(WellKnownClasses::java_lang_ExceptionInInitializerError)->AsClass();
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mirror::Class* iae_class =
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self->DecodeJObject(WellKnownClasses::java_lang_IllegalAccessError)->AsClass();
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mirror::Class* ncdfe_class =
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self->DecodeJObject(WellKnownClasses::java_lang_NoClassDefFoundError)->AsClass();
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mirror::Class* exception = self->GetException()->GetClass();
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if (exception == eiie_class || exception == iae_class || exception == ncdfe_class) {
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self->ThrowNewWrappedException("Ljava/lang/ClassNotFoundException;",
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PrettyDescriptor(c).c_str());
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}
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return nullptr;
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}
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if (loader != nullptr) {
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// Try the common case.
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StackHandleScope<1> hs(soa.Self());
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cl->FindClassInPathClassLoader(soa, soa.Self(), descriptor.c_str(), descriptor_hash,
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hs.NewHandle(loader), &c);
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if (c != nullptr) {
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return soa.AddLocalReference<jclass>(c);
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}
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}
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// Class wasn't resolved so it may be erroneous or not yet ready, force the caller to go into
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// the regular loadClass code.
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return nullptr;
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}
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/*
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* Returns an array of entries from the boot classpath that could contain resources.
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*/
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static jobjectArray VMClassLoader_getBootClassPathEntries(JNIEnv* env, jclass) {
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const std::vector<const DexFile*>& path =
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Runtime::Current()->GetClassLinker()->GetBootClassPath();
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jclass stringClass = env->FindClass("java/lang/String");
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jobjectArray array = env->NewObjectArray(path.size(), stringClass, nullptr);
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for (size_t i = 0; i < path.size(); ++i) {
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const DexFile* dex_file = path[i];
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// For multidex locations, e.g., x.jar:classes2.dex, we want to look into x.jar.
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const std::string& location(dex_file->GetBaseLocation());
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jstring javaPath = env->NewStringUTF(location.c_str());
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env->SetObjectArrayElement(array, i, javaPath);
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}
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return array;
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}
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static JNINativeMethod gMethods[] = {
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NATIVE_METHOD(VMClassLoader, findLoadedClass, "!(Ljava/lang/ClassLoader;Ljava/lang/String;)Ljava/lang/Class;"),
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NATIVE_METHOD(VMClassLoader, getBootClassPathEntries, "()[Ljava/lang/String;"),
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};
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void register_java_lang_VMClassLoader(JNIEnv* env) {
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REGISTER_NATIVE_METHODS("java/lang/VMClassLoader");
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}
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} // namespace art
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