338 lines
11 KiB
C++
338 lines
11 KiB
C++
/*
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* Copyright (C) 2017 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 "base/sdk_version.h"
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#include "class_linker.h"
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#include "dex/art_dex_file_loader.h"
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#include "hidden_api.h"
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#include "jni.h"
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#include "runtime.h"
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#include "scoped_thread_state_change-inl.h"
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#include "thread.h"
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#include "ti-agent/scoped_utf_chars.h"
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namespace art {
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namespace Test674HiddenApi {
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// Should be the same as dalvik.system.VMRuntime.PREVENT_META_REFLECTION_BLOCKLIST_ACCESS
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static constexpr uint64_t kPreventMetaReflectionBlocklistAccess = 142365358;
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std::vector<std::vector<std::unique_ptr<const DexFile>>> opened_dex_files;
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extern "C" JNIEXPORT void JNICALL Java_Main_init(JNIEnv*, jclass) {
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Runtime* runtime = Runtime::Current();
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runtime->SetHiddenApiEnforcementPolicy(hiddenapi::EnforcementPolicy::kEnabled);
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runtime->SetCorePlatformApiEnforcementPolicy(hiddenapi::EnforcementPolicy::kEnabled);
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runtime->SetTargetSdkVersion(
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static_cast<uint32_t>(hiddenapi::ApiList::MaxTargetO().GetMaxAllowedSdkVersion()));
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runtime->SetDedupeHiddenApiWarnings(false);
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}
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extern "C" JNIEXPORT void JNICALL Java_Main_setDexDomain(
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JNIEnv*, jclass, jint int_index, jboolean is_core_platform) {
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size_t index = static_cast<size_t>(int_index);
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CHECK_LT(index, opened_dex_files.size());
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for (std::unique_ptr<const DexFile>& dex_file : opened_dex_files[index]) {
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const_cast<DexFile*>(dex_file.get())->SetHiddenapiDomain(
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(is_core_platform == JNI_FALSE) ? hiddenapi::Domain::kPlatform
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: hiddenapi::Domain::kCorePlatform);
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}
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}
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extern "C" JNIEXPORT jint JNICALL Java_Main_appendToBootClassLoader(
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JNIEnv* env, jclass klass, jstring jpath, jboolean is_core_platform) {
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ScopedUtfChars utf(env, jpath);
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const char* path = utf.c_str();
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CHECK(path != nullptr);
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const size_t index = opened_dex_files.size();
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const jint int_index = static_cast<jint>(index);
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opened_dex_files.push_back(std::vector<std::unique_ptr<const DexFile>>());
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ArtDexFileLoader dex_loader;
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std::string error_msg;
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if (!dex_loader.Open(path,
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path,
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/* verify */ false,
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/* verify_checksum */ true,
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&error_msg,
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&opened_dex_files[index])) {
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LOG(FATAL) << "Could not open " << path << " for boot classpath extension: " << error_msg;
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UNREACHABLE();
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}
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Java_Main_setDexDomain(env, klass, int_index, is_core_platform);
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ScopedObjectAccess soa(Thread::Current());
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for (std::unique_ptr<const DexFile>& dex_file : opened_dex_files[index]) {
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Runtime::Current()->GetClassLinker()->AppendToBootClassPath(Thread::Current(), dex_file.get());
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}
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return int_index;
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}
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extern "C" JNIEXPORT void JNICALL Java_Main_setSdkAll(JNIEnv*, jclass, jboolean value) {
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std::vector<std::string> exemptions;
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if (value != JNI_FALSE) {
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exemptions.push_back("L");
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}
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Runtime::Current()->SetHiddenApiExemptions(exemptions);
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}
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static jobject NewInstance(JNIEnv* env, jclass klass) {
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jmethodID constructor = env->GetMethodID(klass, "<init>", "()V");
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if (constructor == nullptr) {
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return nullptr;
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}
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return env->NewObject(klass, constructor);
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}
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extern "C" JNIEXPORT jboolean JNICALL Java_JNI_canDiscoverField(
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JNIEnv* env, jclass, jclass klass, jstring name, jboolean is_static) {
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ScopedUtfChars utf_name(env, name);
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jfieldID field = is_static ? env->GetStaticFieldID(klass, utf_name.c_str(), "I")
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: env->GetFieldID(klass, utf_name.c_str(), "I");
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if (field == nullptr) {
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env->ExceptionClear();
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return JNI_FALSE;
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}
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return JNI_TRUE;
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}
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extern "C" JNIEXPORT jboolean JNICALL Java_JNI_canGetField(
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JNIEnv* env, jclass, jclass klass, jstring name, jboolean is_static) {
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ScopedUtfChars utf_name(env, name);
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jfieldID field = is_static ? env->GetStaticFieldID(klass, utf_name.c_str(), "I")
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: env->GetFieldID(klass, utf_name.c_str(), "I");
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if (field == nullptr) {
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env->ExceptionClear();
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return JNI_FALSE;
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}
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if (is_static) {
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env->GetStaticIntField(klass, field);
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} else {
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jobject obj = NewInstance(env, klass);
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if (obj == nullptr) {
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env->ExceptionDescribe();
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env->ExceptionClear();
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return JNI_FALSE;
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}
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env->GetIntField(obj, field);
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}
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if (env->ExceptionOccurred()) {
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env->ExceptionDescribe();
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env->ExceptionClear();
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return JNI_FALSE;
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}
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return JNI_TRUE;
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}
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extern "C" JNIEXPORT jboolean JNICALL Java_JNI_canSetField(
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JNIEnv* env, jclass, jclass klass, jstring name, jboolean is_static) {
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ScopedUtfChars utf_name(env, name);
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jfieldID field = is_static ? env->GetStaticFieldID(klass, utf_name.c_str(), "I")
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: env->GetFieldID(klass, utf_name.c_str(), "I");
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if (field == nullptr) {
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env->ExceptionClear();
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return JNI_FALSE;
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}
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if (is_static) {
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env->SetStaticIntField(klass, field, 42);
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} else {
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jobject obj = NewInstance(env, klass);
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if (obj == nullptr) {
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env->ExceptionDescribe();
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env->ExceptionClear();
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return JNI_FALSE;
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}
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env->SetIntField(obj, field, 42);
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}
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if (env->ExceptionOccurred()) {
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env->ExceptionDescribe();
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env->ExceptionClear();
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return JNI_FALSE;
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}
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return JNI_TRUE;
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}
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extern "C" JNIEXPORT jboolean JNICALL Java_JNI_canDiscoverMethod(
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JNIEnv* env, jclass, jclass klass, jstring name, jboolean is_static) {
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ScopedUtfChars utf_name(env, name);
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jmethodID method = is_static ? env->GetStaticMethodID(klass, utf_name.c_str(), "()I")
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: env->GetMethodID(klass, utf_name.c_str(), "()I");
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if (method == nullptr) {
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env->ExceptionClear();
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return JNI_FALSE;
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}
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return JNI_TRUE;
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}
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extern "C" JNIEXPORT jboolean JNICALL Java_JNI_canInvokeMethodA(
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JNIEnv* env, jclass, jclass klass, jstring name, jboolean is_static) {
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ScopedUtfChars utf_name(env, name);
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jmethodID method = is_static ? env->GetStaticMethodID(klass, utf_name.c_str(), "()I")
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: env->GetMethodID(klass, utf_name.c_str(), "()I");
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if (method == nullptr) {
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env->ExceptionClear();
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return JNI_FALSE;
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}
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if (is_static) {
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env->CallStaticIntMethodA(klass, method, nullptr);
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} else {
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jobject obj = NewInstance(env, klass);
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if (obj == nullptr) {
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env->ExceptionDescribe();
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env->ExceptionClear();
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return JNI_FALSE;
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}
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env->CallIntMethodA(obj, method, nullptr);
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}
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if (env->ExceptionOccurred()) {
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env->ExceptionDescribe();
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env->ExceptionClear();
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return JNI_FALSE;
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}
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return JNI_TRUE;
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}
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extern "C" JNIEXPORT jboolean JNICALL Java_JNI_canInvokeMethodV(
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JNIEnv* env, jclass, jclass klass, jstring name, jboolean is_static) {
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ScopedUtfChars utf_name(env, name);
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jmethodID method = is_static ? env->GetStaticMethodID(klass, utf_name.c_str(), "()I")
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: env->GetMethodID(klass, utf_name.c_str(), "()I");
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if (method == nullptr) {
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env->ExceptionClear();
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return JNI_FALSE;
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}
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if (is_static) {
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env->CallStaticIntMethod(klass, method);
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} else {
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jobject obj = NewInstance(env, klass);
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if (obj == nullptr) {
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env->ExceptionDescribe();
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env->ExceptionClear();
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return JNI_FALSE;
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}
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env->CallIntMethod(obj, method);
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}
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if (env->ExceptionOccurred()) {
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env->ExceptionDescribe();
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env->ExceptionClear();
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return JNI_FALSE;
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}
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return JNI_TRUE;
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}
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static constexpr size_t kConstructorSignatureLength = 5; // e.g. (IZ)V
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static constexpr size_t kNumConstructorArgs = kConstructorSignatureLength - 3;
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extern "C" JNIEXPORT jboolean JNICALL Java_JNI_canDiscoverConstructor(
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JNIEnv* env, jclass, jclass klass, jstring args) {
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ScopedUtfChars utf_args(env, args);
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jmethodID constructor = env->GetMethodID(klass, "<init>", utf_args.c_str());
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if (constructor == nullptr) {
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env->ExceptionClear();
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return JNI_FALSE;
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}
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return JNI_TRUE;
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}
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extern "C" JNIEXPORT jboolean JNICALL Java_JNI_canInvokeConstructorA(
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JNIEnv* env, jclass, jclass klass, jstring args) {
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ScopedUtfChars utf_args(env, args);
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jmethodID constructor = env->GetMethodID(klass, "<init>", utf_args.c_str());
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if (constructor == nullptr) {
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env->ExceptionClear();
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return JNI_FALSE;
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}
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// CheckJNI won't allow out-of-range values, so just zero everything.
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CHECK_EQ(strlen(utf_args.c_str()), kConstructorSignatureLength);
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size_t initargs_size = sizeof(jvalue) * kNumConstructorArgs;
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jvalue *initargs = reinterpret_cast<jvalue*>(alloca(initargs_size));
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memset(initargs, 0, initargs_size);
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env->NewObjectA(klass, constructor, initargs);
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if (env->ExceptionOccurred()) {
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env->ExceptionDescribe();
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env->ExceptionClear();
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return JNI_FALSE;
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}
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return JNI_TRUE;
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}
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extern "C" JNIEXPORT jboolean JNICALL Java_JNI_canInvokeConstructorV(
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JNIEnv* env, jclass, jclass klass, jstring args) {
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ScopedUtfChars utf_args(env, args);
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jmethodID constructor = env->GetMethodID(klass, "<init>", utf_args.c_str());
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if (constructor == nullptr) {
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env->ExceptionClear();
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return JNI_FALSE;
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}
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// CheckJNI won't allow out-of-range values, so just zero everything.
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CHECK_EQ(strlen(utf_args.c_str()), kConstructorSignatureLength);
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size_t initargs_size = sizeof(jvalue) * kNumConstructorArgs;
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jvalue *initargs = reinterpret_cast<jvalue*>(alloca(initargs_size));
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memset(initargs, 0, initargs_size);
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static_assert(kNumConstructorArgs == 2, "Change the varargs below if you change the constant");
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env->NewObject(klass, constructor, initargs[0], initargs[1]);
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if (env->ExceptionOccurred()) {
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env->ExceptionDescribe();
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env->ExceptionClear();
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return JNI_FALSE;
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}
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return JNI_TRUE;
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}
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extern "C" JNIEXPORT jint JNICALL Java_Reflection_getHiddenApiAccessFlags(JNIEnv*, jclass) {
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return static_cast<jint>(kAccHiddenapiBits);
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}
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extern "C" JNIEXPORT void JNICALL Java_Reflection_setHiddenApiCheckHardening(JNIEnv*, jclass,
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jboolean value) {
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CompatFramework& compat_framework = Runtime::Current()->GetCompatFramework();
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std::set<uint64_t> disabled_changes = compat_framework.GetDisabledCompatChanges();
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if (value == JNI_TRUE) {
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// If hidden api check hardening is enabled, remove it from the set of disabled changes.
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disabled_changes.erase(kPreventMetaReflectionBlocklistAccess);
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} else {
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// If hidden api check hardening is disabled, add it to the set of disabled changes.
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disabled_changes.insert(kPreventMetaReflectionBlocklistAccess);
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}
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compat_framework.SetDisabledCompatChanges(disabled_changes);
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}
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} // namespace Test674HiddenApi
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} // namespace art
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