1081 lines
41 KiB
C++
1081 lines
41 KiB
C++
/*
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* Copyright (C) 2011 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 "reflection-inl.h"
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#include "art_field-inl.h"
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#include "art_method-inl.h"
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#include "base/enums.h"
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#include "class_linker.h"
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#include "common_throws.h"
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#include "dex/dex_file-inl.h"
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#include "indirect_reference_table-inl.h"
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#include "jni/java_vm_ext.h"
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#include "jni/jni_internal.h"
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#include "jvalue-inl.h"
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#include "mirror/class-inl.h"
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#include "mirror/executable.h"
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#include "mirror/object_array-inl.h"
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#include "nativehelper/scoped_local_ref.h"
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#include "nth_caller_visitor.h"
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#include "scoped_thread_state_change-inl.h"
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#include "stack_reference.h"
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#include "thread-inl.h"
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#include "well_known_classes.h"
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namespace art {
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namespace {
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using android::base::StringPrintf;
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class ArgArray {
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public:
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ArgArray(const char* shorty, uint32_t shorty_len)
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: shorty_(shorty), shorty_len_(shorty_len), num_bytes_(0) {
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size_t num_slots = shorty_len + 1; // +1 in case of receiver.
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if (LIKELY((num_slots * 2) < kSmallArgArraySize)) {
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// We can trivially use the small arg array.
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arg_array_ = small_arg_array_;
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} else {
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// Analyze shorty to see if we need the large arg array.
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for (size_t i = 1; i < shorty_len; ++i) {
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char c = shorty[i];
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if (c == 'J' || c == 'D') {
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num_slots++;
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}
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}
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if (num_slots <= kSmallArgArraySize) {
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arg_array_ = small_arg_array_;
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} else {
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large_arg_array_.reset(new uint32_t[num_slots]);
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arg_array_ = large_arg_array_.get();
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}
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}
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}
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uint32_t* GetArray() {
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return arg_array_;
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}
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uint32_t GetNumBytes() {
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return num_bytes_;
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}
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void Append(uint32_t value) {
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arg_array_[num_bytes_ / 4] = value;
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num_bytes_ += 4;
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}
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void Append(ObjPtr<mirror::Object> obj) REQUIRES_SHARED(Locks::mutator_lock_) {
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Append(StackReference<mirror::Object>::FromMirrorPtr(obj.Ptr()).AsVRegValue());
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}
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void AppendWide(uint64_t value) {
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arg_array_[num_bytes_ / 4] = value;
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arg_array_[(num_bytes_ / 4) + 1] = value >> 32;
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num_bytes_ += 8;
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}
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void AppendFloat(float value) {
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jvalue jv;
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jv.f = value;
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Append(jv.i);
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}
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void AppendDouble(double value) {
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jvalue jv;
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jv.d = value;
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AppendWide(jv.j);
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}
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void BuildArgArrayFromVarArgs(const ScopedObjectAccessAlreadyRunnable& soa,
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ObjPtr<mirror::Object> receiver,
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va_list ap)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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// Set receiver if non-null (method is not static)
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if (receiver != nullptr) {
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Append(receiver);
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}
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for (size_t i = 1; i < shorty_len_; ++i) {
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switch (shorty_[i]) {
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case 'Z':
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case 'B':
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case 'C':
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case 'S':
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case 'I':
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Append(va_arg(ap, jint));
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break;
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case 'F':
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AppendFloat(va_arg(ap, jdouble));
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break;
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case 'L':
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Append(soa.Decode<mirror::Object>(va_arg(ap, jobject)));
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break;
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case 'D':
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AppendDouble(va_arg(ap, jdouble));
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break;
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case 'J':
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AppendWide(va_arg(ap, jlong));
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break;
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#ifndef NDEBUG
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default:
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LOG(FATAL) << "Unexpected shorty character: " << shorty_[i];
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#endif
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}
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}
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}
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void BuildArgArrayFromJValues(const ScopedObjectAccessAlreadyRunnable& soa,
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ObjPtr<mirror::Object> receiver, const jvalue* args)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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// Set receiver if non-null (method is not static)
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if (receiver != nullptr) {
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Append(receiver);
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}
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for (size_t i = 1, args_offset = 0; i < shorty_len_; ++i, ++args_offset) {
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switch (shorty_[i]) {
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case 'Z':
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Append(args[args_offset].z);
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break;
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case 'B':
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Append(args[args_offset].b);
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break;
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case 'C':
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Append(args[args_offset].c);
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break;
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case 'S':
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Append(args[args_offset].s);
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break;
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case 'I':
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FALLTHROUGH_INTENDED;
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case 'F':
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Append(args[args_offset].i);
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break;
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case 'L':
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Append(soa.Decode<mirror::Object>(args[args_offset].l));
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break;
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case 'D':
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FALLTHROUGH_INTENDED;
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case 'J':
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AppendWide(args[args_offset].j);
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break;
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#ifndef NDEBUG
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default:
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LOG(FATAL) << "Unexpected shorty character: " << shorty_[i];
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#endif
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}
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}
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}
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void BuildArgArrayFromFrame(ShadowFrame* shadow_frame, uint32_t arg_offset)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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// Set receiver if non-null (method is not static)
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size_t cur_arg = arg_offset;
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if (!shadow_frame->GetMethod()->IsStatic()) {
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Append(shadow_frame->GetVReg(cur_arg));
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cur_arg++;
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}
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for (size_t i = 1; i < shorty_len_; ++i) {
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switch (shorty_[i]) {
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case 'Z':
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case 'B':
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case 'C':
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case 'S':
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case 'I':
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case 'F':
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case 'L':
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Append(shadow_frame->GetVReg(cur_arg));
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cur_arg++;
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break;
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case 'D':
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case 'J':
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AppendWide(shadow_frame->GetVRegLong(cur_arg));
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cur_arg++;
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cur_arg++;
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break;
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#ifndef NDEBUG
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default:
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LOG(FATAL) << "Unexpected shorty character: " << shorty_[i];
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#endif
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}
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}
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}
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static void ThrowIllegalPrimitiveArgumentException(const char* expected,
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const char* found_descriptor)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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ThrowIllegalArgumentException(
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StringPrintf("Invalid primitive conversion from %s to %s", expected,
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PrettyDescriptor(found_descriptor).c_str()).c_str());
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}
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bool BuildArgArrayFromObjectArray(ObjPtr<mirror::Object> receiver,
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ObjPtr<mirror::ObjectArray<mirror::Object>> raw_args,
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ArtMethod* m,
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Thread* self)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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const dex::TypeList* classes = m->GetParameterTypeList();
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// Set receiver if non-null (method is not static)
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if (receiver != nullptr) {
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Append(receiver);
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}
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StackHandleScope<2> hs(self);
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MutableHandle<mirror::Object> arg(hs.NewHandle<mirror::Object>(nullptr));
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Handle<mirror::ObjectArray<mirror::Object>> args(
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hs.NewHandle<mirror::ObjectArray<mirror::Object>>(raw_args));
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for (size_t i = 1, args_offset = 0; i < shorty_len_; ++i, ++args_offset) {
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arg.Assign(args->Get(args_offset));
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if (((shorty_[i] == 'L') && (arg != nullptr)) ||
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((arg == nullptr && shorty_[i] != 'L'))) {
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// TODO: The method's parameter's type must have been previously resolved, yet
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// we've seen cases where it's not b/34440020.
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ObjPtr<mirror::Class> dst_class(
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m->ResolveClassFromTypeIndex(classes->GetTypeItem(args_offset).type_idx_));
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if (dst_class == nullptr) {
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CHECK(self->IsExceptionPending());
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return false;
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}
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if (UNLIKELY(arg == nullptr || !arg->InstanceOf(dst_class))) {
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ThrowIllegalArgumentException(
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StringPrintf("method %s argument %zd has type %s, got %s",
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m->PrettyMethod(false).c_str(),
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args_offset + 1, // Humans don't count from 0.
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mirror::Class::PrettyDescriptor(dst_class).c_str(),
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mirror::Object::PrettyTypeOf(arg.Get()).c_str()).c_str());
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return false;
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}
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}
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#define DO_FIRST_ARG(match_descriptor, get_fn, append) { \
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if (LIKELY(arg != nullptr && \
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arg->GetClass()->DescriptorEquals(match_descriptor))) { \
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ArtField* primitive_field = arg->GetClass()->GetInstanceField(0); \
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append(primitive_field-> get_fn(arg.Get()));
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#define DO_ARG(match_descriptor, get_fn, append) \
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} else if (LIKELY(arg != nullptr && \
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arg->GetClass<>()->DescriptorEquals(match_descriptor))) { \
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ArtField* primitive_field = arg->GetClass()->GetInstanceField(0); \
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append(primitive_field-> get_fn(arg.Get()));
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#define DO_FAIL(expected) \
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} else { \
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if (arg->GetClass<>()->IsPrimitive()) { \
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std::string temp; \
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ThrowIllegalPrimitiveArgumentException(expected, \
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arg->GetClass<>()->GetDescriptor(&temp)); \
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} else { \
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ThrowIllegalArgumentException(\
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StringPrintf("method %s argument %zd has type %s, got %s", \
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ArtMethod::PrettyMethod(m, false).c_str(), \
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args_offset + 1, \
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expected, \
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mirror::Object::PrettyTypeOf(arg.Get()).c_str()).c_str()); \
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} \
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return false; \
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} }
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switch (shorty_[i]) {
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case 'L':
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Append(arg.Get());
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break;
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case 'Z':
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DO_FIRST_ARG("Ljava/lang/Boolean;", GetBoolean, Append)
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DO_FAIL("boolean")
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break;
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case 'B':
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DO_FIRST_ARG("Ljava/lang/Byte;", GetByte, Append)
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DO_FAIL("byte")
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break;
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case 'C':
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DO_FIRST_ARG("Ljava/lang/Character;", GetChar, Append)
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DO_FAIL("char")
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break;
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case 'S':
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DO_FIRST_ARG("Ljava/lang/Short;", GetShort, Append)
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DO_ARG("Ljava/lang/Byte;", GetByte, Append)
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DO_FAIL("short")
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break;
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case 'I':
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DO_FIRST_ARG("Ljava/lang/Integer;", GetInt, Append)
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DO_ARG("Ljava/lang/Character;", GetChar, Append)
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DO_ARG("Ljava/lang/Short;", GetShort, Append)
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DO_ARG("Ljava/lang/Byte;", GetByte, Append)
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DO_FAIL("int")
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break;
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case 'J':
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DO_FIRST_ARG("Ljava/lang/Long;", GetLong, AppendWide)
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DO_ARG("Ljava/lang/Integer;", GetInt, AppendWide)
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DO_ARG("Ljava/lang/Character;", GetChar, AppendWide)
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DO_ARG("Ljava/lang/Short;", GetShort, AppendWide)
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DO_ARG("Ljava/lang/Byte;", GetByte, AppendWide)
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DO_FAIL("long")
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break;
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case 'F':
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DO_FIRST_ARG("Ljava/lang/Float;", GetFloat, AppendFloat)
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DO_ARG("Ljava/lang/Long;", GetLong, AppendFloat)
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DO_ARG("Ljava/lang/Integer;", GetInt, AppendFloat)
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DO_ARG("Ljava/lang/Character;", GetChar, AppendFloat)
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DO_ARG("Ljava/lang/Short;", GetShort, AppendFloat)
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DO_ARG("Ljava/lang/Byte;", GetByte, AppendFloat)
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DO_FAIL("float")
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break;
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case 'D':
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DO_FIRST_ARG("Ljava/lang/Double;", GetDouble, AppendDouble)
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DO_ARG("Ljava/lang/Float;", GetFloat, AppendDouble)
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DO_ARG("Ljava/lang/Long;", GetLong, AppendDouble)
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DO_ARG("Ljava/lang/Integer;", GetInt, AppendDouble)
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DO_ARG("Ljava/lang/Character;", GetChar, AppendDouble)
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DO_ARG("Ljava/lang/Short;", GetShort, AppendDouble)
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DO_ARG("Ljava/lang/Byte;", GetByte, AppendDouble)
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DO_FAIL("double")
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break;
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#ifndef NDEBUG
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default:
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LOG(FATAL) << "Unexpected shorty character: " << shorty_[i];
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UNREACHABLE();
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#endif
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}
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#undef DO_FIRST_ARG
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#undef DO_ARG
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#undef DO_FAIL
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}
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return true;
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}
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private:
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enum { kSmallArgArraySize = 16 };
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const char* const shorty_;
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const uint32_t shorty_len_;
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uint32_t num_bytes_;
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uint32_t* arg_array_;
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uint32_t small_arg_array_[kSmallArgArraySize];
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std::unique_ptr<uint32_t[]> large_arg_array_;
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};
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void CheckMethodArguments(JavaVMExt* vm, ArtMethod* m, uint32_t* args)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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const dex::TypeList* params = m->GetParameterTypeList();
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if (params == nullptr) {
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return; // No arguments so nothing to check.
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}
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uint32_t offset = 0;
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uint32_t num_params = params->Size();
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size_t error_count = 0;
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if (!m->IsStatic()) {
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offset = 1;
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}
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// TODO: If args contain object references, it may cause problems.
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Thread* const self = Thread::Current();
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for (uint32_t i = 0; i < num_params; i++) {
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dex::TypeIndex type_idx = params->GetTypeItem(i).type_idx_;
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ObjPtr<mirror::Class> param_type(m->ResolveClassFromTypeIndex(type_idx));
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if (param_type == nullptr) {
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CHECK(self->IsExceptionPending());
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LOG(ERROR) << "Internal error: unresolvable type for argument type in JNI invoke: "
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<< m->GetTypeDescriptorFromTypeIdx(type_idx) << "\n"
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<< self->GetException()->Dump();
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self->ClearException();
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++error_count;
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} else if (!param_type->IsPrimitive()) {
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// TODO: There is a compaction bug here since GetClassFromTypeIdx can cause thread suspension,
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// this is a hard to fix problem since the args can contain Object*, we need to save and
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// restore them by using a visitor similar to the ones used in the trampoline entrypoints.
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ObjPtr<mirror::Object> argument =
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(reinterpret_cast<StackReference<mirror::Object>*>(&args[i + offset]))->AsMirrorPtr();
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if (argument != nullptr && !argument->InstanceOf(param_type)) {
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LOG(ERROR) << "JNI ERROR (app bug): attempt to pass an instance of "
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<< argument->PrettyTypeOf() << " as argument " << (i + 1)
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<< " to " << m->PrettyMethod();
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++error_count;
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}
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} else if (param_type->IsPrimitiveLong() || param_type->IsPrimitiveDouble()) {
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offset++;
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} else {
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int32_t arg = static_cast<int32_t>(args[i + offset]);
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if (param_type->IsPrimitiveBoolean()) {
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if (arg != JNI_TRUE && arg != JNI_FALSE) {
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LOG(ERROR) << "JNI ERROR (app bug): expected jboolean (0/1) but got value of "
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<< arg << " as argument " << (i + 1) << " to " << m->PrettyMethod();
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++error_count;
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}
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} else if (param_type->IsPrimitiveByte()) {
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if (arg < -128 || arg > 127) {
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LOG(ERROR) << "JNI ERROR (app bug): expected jbyte but got value of "
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<< arg << " as argument " << (i + 1) << " to " << m->PrettyMethod();
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++error_count;
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}
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} else if (param_type->IsPrimitiveChar()) {
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if (args[i + offset] > 0xFFFF) {
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LOG(ERROR) << "JNI ERROR (app bug): expected jchar but got value of "
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<< arg << " as argument " << (i + 1) << " to " << m->PrettyMethod();
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++error_count;
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}
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} else if (param_type->IsPrimitiveShort()) {
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if (arg < -32768 || arg > 0x7FFF) {
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LOG(ERROR) << "JNI ERROR (app bug): expected jshort but got value of "
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<< arg << " as argument " << (i + 1) << " to " << m->PrettyMethod();
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++error_count;
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}
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}
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}
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}
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if (UNLIKELY(error_count > 0)) {
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// TODO: pass the JNI function name (such as "CallVoidMethodV") through so we can call JniAbort
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// with an argument.
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vm->JniAbortF(nullptr, "bad arguments passed to %s (see above for details)",
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m->PrettyMethod().c_str());
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}
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}
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ArtMethod* FindVirtualMethod(ObjPtr<mirror::Object> receiver, ArtMethod* method)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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return receiver->GetClass()->FindVirtualMethodForVirtualOrInterface(method, kRuntimePointerSize);
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}
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void InvokeWithArgArray(const ScopedObjectAccessAlreadyRunnable& soa,
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ArtMethod* method, ArgArray* arg_array, JValue* result,
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const char* shorty)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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uint32_t* args = arg_array->GetArray();
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if (UNLIKELY(soa.Env()->IsCheckJniEnabled())) {
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CheckMethodArguments(soa.Vm(), method->GetInterfaceMethodIfProxy(kRuntimePointerSize), args);
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}
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method->Invoke(soa.Self(), args, arg_array->GetNumBytes(), result, shorty);
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}
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ALWAYS_INLINE
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bool CheckArgsForInvokeMethod(ArtMethod* np_method,
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ObjPtr<mirror::ObjectArray<mirror::Object>> objects)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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const dex::TypeList* classes = np_method->GetParameterTypeList();
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uint32_t classes_size = (classes == nullptr) ? 0 : classes->Size();
|
|
uint32_t arg_count = (objects == nullptr) ? 0 : objects->GetLength();
|
|
if (UNLIKELY(arg_count != classes_size)) {
|
|
ThrowIllegalArgumentException(StringPrintf("Wrong number of arguments; expected %d, got %d",
|
|
classes_size, arg_count).c_str());
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
ALWAYS_INLINE
|
|
bool InvokeMethodImpl(const ScopedObjectAccessAlreadyRunnable& soa,
|
|
ArtMethod* m,
|
|
ArtMethod* np_method,
|
|
ObjPtr<mirror::Object> receiver,
|
|
ObjPtr<mirror::ObjectArray<mirror::Object>> objects,
|
|
const char** shorty,
|
|
JValue* result) REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
// Invoke the method.
|
|
uint32_t shorty_len = 0;
|
|
*shorty = np_method->GetShorty(&shorty_len);
|
|
ArgArray arg_array(*shorty, shorty_len);
|
|
if (!arg_array.BuildArgArrayFromObjectArray(receiver, objects, np_method, soa.Self())) {
|
|
CHECK(soa.Self()->IsExceptionPending());
|
|
return false;
|
|
}
|
|
|
|
InvokeWithArgArray(soa, m, &arg_array, result, *shorty);
|
|
|
|
// Wrap any exception with "Ljava/lang/reflect/InvocationTargetException;" and return early.
|
|
if (soa.Self()->IsExceptionPending()) {
|
|
// To abort a transaction we use a fake exception that should never be caught by the bytecode
|
|
// and therefore it makes no sense to wrap it.
|
|
if (Runtime::Current()->IsTransactionAborted()) {
|
|
DCHECK(soa.Self()->GetException()->GetClass()->DescriptorEquals(
|
|
"Ldalvik/system/TransactionAbortError;"))
|
|
<< soa.Self()->GetException()->GetClass()->PrettyDescriptor();
|
|
} else {
|
|
// If we get another exception when we are trying to wrap, then just use that instead.
|
|
ScopedLocalRef<jthrowable> th(soa.Env(), soa.Env()->ExceptionOccurred());
|
|
soa.Self()->ClearException();
|
|
jobject exception_instance =
|
|
soa.Env()->NewObject(WellKnownClasses::java_lang_reflect_InvocationTargetException,
|
|
WellKnownClasses::java_lang_reflect_InvocationTargetException_init,
|
|
th.get());
|
|
if (exception_instance == nullptr) {
|
|
soa.Self()->AssertPendingException();
|
|
return false;
|
|
}
|
|
soa.Env()->Throw(reinterpret_cast<jthrowable>(exception_instance));
|
|
}
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
} // anonymous namespace
|
|
|
|
template <>
|
|
JValue InvokeWithVarArgs(const ScopedObjectAccessAlreadyRunnable& soa,
|
|
jobject obj,
|
|
ArtMethod* method,
|
|
va_list args) REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
// We want to make sure that the stack is not within a small distance from the
|
|
// protected region in case we are calling into a leaf function whose stack
|
|
// check has been elided.
|
|
if (UNLIKELY(__builtin_frame_address(0) < soa.Self()->GetStackEnd())) {
|
|
ThrowStackOverflowError(soa.Self());
|
|
return JValue();
|
|
}
|
|
bool is_string_init = method->GetDeclaringClass()->IsStringClass() && method->IsConstructor();
|
|
if (is_string_init) {
|
|
// Replace calls to String.<init> with equivalent StringFactory call.
|
|
method = WellKnownClasses::StringInitToStringFactory(method);
|
|
}
|
|
ObjPtr<mirror::Object> receiver = method->IsStatic() ? nullptr : soa.Decode<mirror::Object>(obj);
|
|
uint32_t shorty_len = 0;
|
|
const char* shorty =
|
|
method->GetInterfaceMethodIfProxy(kRuntimePointerSize)->GetShorty(&shorty_len);
|
|
JValue result;
|
|
ArgArray arg_array(shorty, shorty_len);
|
|
arg_array.BuildArgArrayFromVarArgs(soa, receiver, args);
|
|
InvokeWithArgArray(soa, method, &arg_array, &result, shorty);
|
|
if (is_string_init) {
|
|
// For string init, remap original receiver to StringFactory result.
|
|
UpdateReference(soa.Self(), obj, result.GetL());
|
|
}
|
|
return result;
|
|
}
|
|
|
|
template <>
|
|
JValue InvokeWithVarArgs(const ScopedObjectAccessAlreadyRunnable& soa,
|
|
jobject obj,
|
|
jmethodID mid,
|
|
va_list args) REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
DCHECK(mid != nullptr) << "Called with null jmethodID";
|
|
return InvokeWithVarArgs(soa, obj, jni::DecodeArtMethod(mid), args);
|
|
}
|
|
|
|
template <>
|
|
JValue InvokeWithJValues(const ScopedObjectAccessAlreadyRunnable& soa,
|
|
jobject obj,
|
|
ArtMethod* method,
|
|
const jvalue* args) {
|
|
// We want to make sure that the stack is not within a small distance from the
|
|
// protected region in case we are calling into a leaf function whose stack
|
|
// check has been elided.
|
|
if (UNLIKELY(__builtin_frame_address(0) < soa.Self()->GetStackEnd())) {
|
|
ThrowStackOverflowError(soa.Self());
|
|
return JValue();
|
|
}
|
|
bool is_string_init = method->GetDeclaringClass()->IsStringClass() && method->IsConstructor();
|
|
if (is_string_init) {
|
|
// Replace calls to String.<init> with equivalent StringFactory call.
|
|
method = WellKnownClasses::StringInitToStringFactory(method);
|
|
}
|
|
ObjPtr<mirror::Object> receiver = method->IsStatic() ? nullptr : soa.Decode<mirror::Object>(obj);
|
|
uint32_t shorty_len = 0;
|
|
const char* shorty =
|
|
method->GetInterfaceMethodIfProxy(kRuntimePointerSize)->GetShorty(&shorty_len);
|
|
JValue result;
|
|
ArgArray arg_array(shorty, shorty_len);
|
|
arg_array.BuildArgArrayFromJValues(soa, receiver, args);
|
|
InvokeWithArgArray(soa, method, &arg_array, &result, shorty);
|
|
if (is_string_init) {
|
|
// For string init, remap original receiver to StringFactory result.
|
|
UpdateReference(soa.Self(), obj, result.GetL());
|
|
}
|
|
return result;
|
|
}
|
|
|
|
template <>
|
|
JValue InvokeWithJValues(const ScopedObjectAccessAlreadyRunnable& soa,
|
|
jobject obj,
|
|
jmethodID mid,
|
|
const jvalue* args) {
|
|
DCHECK(mid != nullptr) << "Called with null jmethodID";
|
|
return InvokeWithJValues(soa, obj, jni::DecodeArtMethod(mid), args);
|
|
}
|
|
|
|
template <>
|
|
JValue InvokeVirtualOrInterfaceWithJValues(const ScopedObjectAccessAlreadyRunnable& soa,
|
|
jobject obj,
|
|
ArtMethod* interface_method,
|
|
const jvalue* args) {
|
|
// We want to make sure that the stack is not within a small distance from the
|
|
// protected region in case we are calling into a leaf function whose stack
|
|
// check has been elided.
|
|
if (UNLIKELY(__builtin_frame_address(0) < soa.Self()->GetStackEnd())) {
|
|
ThrowStackOverflowError(soa.Self());
|
|
return JValue();
|
|
}
|
|
ObjPtr<mirror::Object> receiver = soa.Decode<mirror::Object>(obj);
|
|
ArtMethod* method = FindVirtualMethod(receiver, interface_method);
|
|
bool is_string_init = method->GetDeclaringClass()->IsStringClass() && method->IsConstructor();
|
|
if (is_string_init) {
|
|
// Replace calls to String.<init> with equivalent StringFactory call.
|
|
method = WellKnownClasses::StringInitToStringFactory(method);
|
|
receiver = nullptr;
|
|
}
|
|
uint32_t shorty_len = 0;
|
|
const char* shorty =
|
|
method->GetInterfaceMethodIfProxy(kRuntimePointerSize)->GetShorty(&shorty_len);
|
|
JValue result;
|
|
ArgArray arg_array(shorty, shorty_len);
|
|
arg_array.BuildArgArrayFromJValues(soa, receiver, args);
|
|
InvokeWithArgArray(soa, method, &arg_array, &result, shorty);
|
|
if (is_string_init) {
|
|
// For string init, remap original receiver to StringFactory result.
|
|
UpdateReference(soa.Self(), obj, result.GetL());
|
|
}
|
|
return result;
|
|
}
|
|
|
|
template <>
|
|
JValue InvokeVirtualOrInterfaceWithJValues(const ScopedObjectAccessAlreadyRunnable& soa,
|
|
jobject obj,
|
|
jmethodID mid,
|
|
const jvalue* args) {
|
|
DCHECK(mid != nullptr) << "Called with null jmethodID";
|
|
return InvokeVirtualOrInterfaceWithJValues(soa, obj, jni::DecodeArtMethod(mid), args);
|
|
}
|
|
|
|
template <>
|
|
JValue InvokeVirtualOrInterfaceWithVarArgs(const ScopedObjectAccessAlreadyRunnable& soa,
|
|
jobject obj,
|
|
ArtMethod* interface_method,
|
|
va_list args) {
|
|
// We want to make sure that the stack is not within a small distance from the
|
|
// protected region in case we are calling into a leaf function whose stack
|
|
// check has been elided.
|
|
if (UNLIKELY(__builtin_frame_address(0) < soa.Self()->GetStackEnd())) {
|
|
ThrowStackOverflowError(soa.Self());
|
|
return JValue();
|
|
}
|
|
|
|
ObjPtr<mirror::Object> receiver = soa.Decode<mirror::Object>(obj);
|
|
ArtMethod* method = FindVirtualMethod(receiver, interface_method);
|
|
bool is_string_init = method->GetDeclaringClass()->IsStringClass() && method->IsConstructor();
|
|
if (is_string_init) {
|
|
// Replace calls to String.<init> with equivalent StringFactory call.
|
|
method = WellKnownClasses::StringInitToStringFactory(method);
|
|
receiver = nullptr;
|
|
}
|
|
uint32_t shorty_len = 0;
|
|
const char* shorty =
|
|
method->GetInterfaceMethodIfProxy(kRuntimePointerSize)->GetShorty(&shorty_len);
|
|
JValue result;
|
|
ArgArray arg_array(shorty, shorty_len);
|
|
arg_array.BuildArgArrayFromVarArgs(soa, receiver, args);
|
|
InvokeWithArgArray(soa, method, &arg_array, &result, shorty);
|
|
if (is_string_init) {
|
|
// For string init, remap original receiver to StringFactory result.
|
|
UpdateReference(soa.Self(), obj, result.GetL());
|
|
}
|
|
return result;
|
|
}
|
|
|
|
template <>
|
|
JValue InvokeVirtualOrInterfaceWithVarArgs(const ScopedObjectAccessAlreadyRunnable& soa,
|
|
jobject obj,
|
|
jmethodID mid,
|
|
va_list args) {
|
|
DCHECK(mid != nullptr) << "Called with null jmethodID";
|
|
return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, jni::DecodeArtMethod(mid), args);
|
|
}
|
|
|
|
template <PointerSize kPointerSize>
|
|
jobject InvokeMethod(const ScopedObjectAccessAlreadyRunnable& soa, jobject javaMethod,
|
|
jobject javaReceiver, jobject javaArgs, size_t num_frames) {
|
|
// We want to make sure that the stack is not within a small distance from the
|
|
// protected region in case we are calling into a leaf function whose stack
|
|
// check has been elided.
|
|
if (UNLIKELY(__builtin_frame_address(0) <
|
|
soa.Self()->GetStackEndForInterpreter(true))) {
|
|
ThrowStackOverflowError(soa.Self());
|
|
return nullptr;
|
|
}
|
|
|
|
ObjPtr<mirror::Executable> executable = soa.Decode<mirror::Executable>(javaMethod);
|
|
const bool accessible = executable->IsAccessible();
|
|
ArtMethod* m = executable->GetArtMethod();
|
|
|
|
ObjPtr<mirror::Class> declaring_class = m->GetDeclaringClass();
|
|
if (UNLIKELY(!declaring_class->IsVisiblyInitialized())) {
|
|
Thread* self = soa.Self();
|
|
StackHandleScope<1> hs(self);
|
|
HandleWrapperObjPtr<mirror::Class> h_class(hs.NewHandleWrapper(&declaring_class));
|
|
if (UNLIKELY(!Runtime::Current()->GetClassLinker()->EnsureInitialized(
|
|
self, h_class, /*can_init_fields=*/ true, /*can_init_parents=*/ true))) {
|
|
DCHECK(self->IsExceptionPending());
|
|
return nullptr;
|
|
}
|
|
DCHECK(h_class->IsInitializing());
|
|
}
|
|
|
|
ObjPtr<mirror::Object> receiver;
|
|
if (!m->IsStatic()) {
|
|
// Replace calls to String.<init> with equivalent StringFactory call.
|
|
if (declaring_class->IsStringClass() && m->IsConstructor()) {
|
|
m = WellKnownClasses::StringInitToStringFactory(m);
|
|
CHECK(javaReceiver == nullptr);
|
|
} else {
|
|
// Check that the receiver is non-null and an instance of the field's declaring class.
|
|
receiver = soa.Decode<mirror::Object>(javaReceiver);
|
|
if (!VerifyObjectIsClass(receiver, declaring_class)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Find the actual implementation of the virtual method.
|
|
m = receiver->GetClass()->FindVirtualMethodForVirtualOrInterface(m, kPointerSize);
|
|
}
|
|
}
|
|
|
|
// Get our arrays of arguments and their types, and check they're the same size.
|
|
ObjPtr<mirror::ObjectArray<mirror::Object>> objects =
|
|
soa.Decode<mirror::ObjectArray<mirror::Object>>(javaArgs);
|
|
auto* np_method = m->GetInterfaceMethodIfProxy(kPointerSize);
|
|
if (!CheckArgsForInvokeMethod(np_method, objects)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// If method is not set to be accessible, verify it can be accessed by the caller.
|
|
ObjPtr<mirror::Class> calling_class;
|
|
if (!accessible && !VerifyAccess(soa.Self(),
|
|
receiver,
|
|
declaring_class,
|
|
m->GetAccessFlags(),
|
|
&calling_class,
|
|
num_frames)) {
|
|
ThrowIllegalAccessException(
|
|
StringPrintf("Class %s cannot access %s method %s of class %s",
|
|
calling_class == nullptr ? "null" : calling_class->PrettyClass().c_str(),
|
|
PrettyJavaAccessFlags(m->GetAccessFlags()).c_str(),
|
|
m->PrettyMethod().c_str(),
|
|
m->GetDeclaringClass() == nullptr ? "null" :
|
|
m->GetDeclaringClass()->PrettyClass().c_str()).c_str());
|
|
return nullptr;
|
|
}
|
|
|
|
// Invoke the method.
|
|
JValue result;
|
|
const char* shorty;
|
|
if (!InvokeMethodImpl(soa, m, np_method, receiver, objects, &shorty, &result)) {
|
|
return nullptr;
|
|
}
|
|
return soa.AddLocalReference<jobject>(BoxPrimitive(Primitive::GetType(shorty[0]), result));
|
|
}
|
|
|
|
template
|
|
jobject InvokeMethod<PointerSize::k32>(const ScopedObjectAccessAlreadyRunnable& soa,
|
|
jobject javaMethod,
|
|
jobject javaReceiver,
|
|
jobject javaArgs,
|
|
size_t num_frames);
|
|
template
|
|
jobject InvokeMethod<PointerSize::k64>(const ScopedObjectAccessAlreadyRunnable& soa,
|
|
jobject javaMethod,
|
|
jobject javaReceiver,
|
|
jobject javaArgs,
|
|
size_t num_frames);
|
|
|
|
void InvokeConstructor(const ScopedObjectAccessAlreadyRunnable& soa,
|
|
ArtMethod* constructor,
|
|
ObjPtr<mirror::Object> receiver,
|
|
jobject javaArgs) {
|
|
// We want to make sure that the stack is not within a small distance from the
|
|
// protected region in case we are calling into a leaf function whose stack
|
|
// check has been elided.
|
|
if (UNLIKELY(__builtin_frame_address(0) < soa.Self()->GetStackEndForInterpreter(true))) {
|
|
ThrowStackOverflowError(soa.Self());
|
|
return;
|
|
}
|
|
|
|
if (kIsDebugBuild) {
|
|
CHECK(constructor->IsConstructor());
|
|
|
|
ObjPtr<mirror::Class> declaring_class = constructor->GetDeclaringClass();
|
|
CHECK(declaring_class->IsInitializing());
|
|
|
|
// Calls to String.<init> should have been repplaced with with equivalent StringFactory calls.
|
|
CHECK(!declaring_class->IsStringClass());
|
|
|
|
// Check that the receiver is non-null and an instance of the field's declaring class.
|
|
CHECK(receiver != nullptr);
|
|
CHECK(VerifyObjectIsClass(receiver, declaring_class));
|
|
CHECK_EQ(constructor,
|
|
receiver->GetClass()->FindVirtualMethodForVirtualOrInterface(constructor,
|
|
kRuntimePointerSize));
|
|
}
|
|
|
|
// Get our arrays of arguments and their types, and check they're the same size.
|
|
ObjPtr<mirror::ObjectArray<mirror::Object>> objects =
|
|
soa.Decode<mirror::ObjectArray<mirror::Object>>(javaArgs);
|
|
ArtMethod* np_method = constructor->GetInterfaceMethodIfProxy(kRuntimePointerSize);
|
|
if (!CheckArgsForInvokeMethod(np_method, objects)) {
|
|
return;
|
|
}
|
|
|
|
// Invoke the constructor.
|
|
JValue result;
|
|
const char* shorty;
|
|
InvokeMethodImpl(soa, constructor, np_method, receiver, objects, &shorty, &result);
|
|
}
|
|
|
|
ObjPtr<mirror::Object> BoxPrimitive(Primitive::Type src_class, const JValue& value) {
|
|
if (src_class == Primitive::kPrimNot) {
|
|
return value.GetL();
|
|
}
|
|
if (src_class == Primitive::kPrimVoid) {
|
|
// There's no such thing as a void field, and void methods invoked via reflection return null.
|
|
return nullptr;
|
|
}
|
|
|
|
jmethodID m = nullptr;
|
|
const char* shorty;
|
|
switch (src_class) {
|
|
case Primitive::kPrimBoolean:
|
|
m = WellKnownClasses::java_lang_Boolean_valueOf;
|
|
shorty = "LZ";
|
|
break;
|
|
case Primitive::kPrimByte:
|
|
m = WellKnownClasses::java_lang_Byte_valueOf;
|
|
shorty = "LB";
|
|
break;
|
|
case Primitive::kPrimChar:
|
|
m = WellKnownClasses::java_lang_Character_valueOf;
|
|
shorty = "LC";
|
|
break;
|
|
case Primitive::kPrimDouble:
|
|
m = WellKnownClasses::java_lang_Double_valueOf;
|
|
shorty = "LD";
|
|
break;
|
|
case Primitive::kPrimFloat:
|
|
m = WellKnownClasses::java_lang_Float_valueOf;
|
|
shorty = "LF";
|
|
break;
|
|
case Primitive::kPrimInt:
|
|
m = WellKnownClasses::java_lang_Integer_valueOf;
|
|
shorty = "LI";
|
|
break;
|
|
case Primitive::kPrimLong:
|
|
m = WellKnownClasses::java_lang_Long_valueOf;
|
|
shorty = "LJ";
|
|
break;
|
|
case Primitive::kPrimShort:
|
|
m = WellKnownClasses::java_lang_Short_valueOf;
|
|
shorty = "LS";
|
|
break;
|
|
default:
|
|
LOG(FATAL) << static_cast<int>(src_class);
|
|
shorty = nullptr;
|
|
}
|
|
|
|
ScopedObjectAccessUnchecked soa(Thread::Current());
|
|
DCHECK_EQ(soa.Self()->GetState(), kRunnable);
|
|
|
|
ArgArray arg_array(shorty, 2);
|
|
JValue result;
|
|
if (src_class == Primitive::kPrimDouble || src_class == Primitive::kPrimLong) {
|
|
arg_array.AppendWide(value.GetJ());
|
|
} else {
|
|
arg_array.Append(value.GetI());
|
|
}
|
|
|
|
jni::DecodeArtMethod(m)->Invoke(soa.Self(),
|
|
arg_array.GetArray(),
|
|
arg_array.GetNumBytes(),
|
|
&result,
|
|
shorty);
|
|
return result.GetL();
|
|
}
|
|
|
|
static std::string UnboxingFailureKind(ArtField* f)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
if (f != nullptr) {
|
|
return "field " + f->PrettyField(false);
|
|
}
|
|
return "result";
|
|
}
|
|
|
|
static bool UnboxPrimitive(ObjPtr<mirror::Object> o,
|
|
ObjPtr<mirror::Class> dst_class,
|
|
ArtField* f,
|
|
JValue* unboxed_value)
|
|
REQUIRES_SHARED(Locks::mutator_lock_) {
|
|
bool unbox_for_result = (f == nullptr);
|
|
if (!dst_class->IsPrimitive()) {
|
|
if (UNLIKELY(o != nullptr && !o->InstanceOf(dst_class))) {
|
|
if (!unbox_for_result) {
|
|
ThrowIllegalArgumentException(
|
|
StringPrintf("%s has type %s, got %s",
|
|
UnboxingFailureKind(f).c_str(),
|
|
dst_class->PrettyDescriptor().c_str(),
|
|
o->PrettyTypeOf().c_str()).c_str());
|
|
} else {
|
|
ThrowClassCastException(
|
|
StringPrintf("Couldn't convert result of type %s to %s",
|
|
o->PrettyTypeOf().c_str(),
|
|
dst_class->PrettyDescriptor().c_str()).c_str());
|
|
}
|
|
return false;
|
|
}
|
|
unboxed_value->SetL(o);
|
|
return true;
|
|
}
|
|
if (UNLIKELY(dst_class->GetPrimitiveType() == Primitive::kPrimVoid)) {
|
|
ThrowIllegalArgumentException(StringPrintf("Can't unbox %s to void",
|
|
UnboxingFailureKind(f).c_str()).c_str());
|
|
return false;
|
|
}
|
|
if (UNLIKELY(o == nullptr)) {
|
|
if (!unbox_for_result) {
|
|
ThrowIllegalArgumentException(
|
|
StringPrintf("%s has type %s, got null",
|
|
UnboxingFailureKind(f).c_str(),
|
|
dst_class->PrettyDescriptor().c_str()).c_str());
|
|
} else {
|
|
ThrowNullPointerException(
|
|
StringPrintf("Expected to unbox a '%s' primitive type but was returned null",
|
|
dst_class->PrettyDescriptor().c_str()).c_str());
|
|
}
|
|
return false;
|
|
}
|
|
|
|
JValue boxed_value;
|
|
ObjPtr<mirror::Class> klass = o->GetClass();
|
|
Primitive::Type primitive_type;
|
|
ArtField* primitive_field = &klass->GetIFieldsPtr()->At(0);
|
|
if (klass->DescriptorEquals("Ljava/lang/Boolean;")) {
|
|
primitive_type = Primitive::kPrimBoolean;
|
|
boxed_value.SetZ(primitive_field->GetBoolean(o));
|
|
} else if (klass->DescriptorEquals("Ljava/lang/Byte;")) {
|
|
primitive_type = Primitive::kPrimByte;
|
|
boxed_value.SetB(primitive_field->GetByte(o));
|
|
} else if (klass->DescriptorEquals("Ljava/lang/Character;")) {
|
|
primitive_type = Primitive::kPrimChar;
|
|
boxed_value.SetC(primitive_field->GetChar(o));
|
|
} else if (klass->DescriptorEquals("Ljava/lang/Float;")) {
|
|
primitive_type = Primitive::kPrimFloat;
|
|
boxed_value.SetF(primitive_field->GetFloat(o));
|
|
} else if (klass->DescriptorEquals("Ljava/lang/Double;")) {
|
|
primitive_type = Primitive::kPrimDouble;
|
|
boxed_value.SetD(primitive_field->GetDouble(o));
|
|
} else if (klass->DescriptorEquals("Ljava/lang/Integer;")) {
|
|
primitive_type = Primitive::kPrimInt;
|
|
boxed_value.SetI(primitive_field->GetInt(o));
|
|
} else if (klass->DescriptorEquals("Ljava/lang/Long;")) {
|
|
primitive_type = Primitive::kPrimLong;
|
|
boxed_value.SetJ(primitive_field->GetLong(o));
|
|
} else if (klass->DescriptorEquals("Ljava/lang/Short;")) {
|
|
primitive_type = Primitive::kPrimShort;
|
|
boxed_value.SetS(primitive_field->GetShort(o));
|
|
} else {
|
|
std::string temp;
|
|
ThrowIllegalArgumentException(
|
|
StringPrintf("%s has type %s, got %s", UnboxingFailureKind(f).c_str(),
|
|
dst_class->PrettyDescriptor().c_str(),
|
|
PrettyDescriptor(o->GetClass()->GetDescriptor(&temp)).c_str()).c_str());
|
|
return false;
|
|
}
|
|
|
|
return ConvertPrimitiveValue(unbox_for_result,
|
|
primitive_type,
|
|
dst_class->GetPrimitiveType(),
|
|
boxed_value, unboxed_value);
|
|
}
|
|
|
|
bool UnboxPrimitiveForField(ObjPtr<mirror::Object> o,
|
|
ObjPtr<mirror::Class> dst_class,
|
|
ArtField* f,
|
|
JValue* unboxed_value) {
|
|
DCHECK(f != nullptr);
|
|
return UnboxPrimitive(o, dst_class, f, unboxed_value);
|
|
}
|
|
|
|
bool UnboxPrimitiveForResult(ObjPtr<mirror::Object> o,
|
|
ObjPtr<mirror::Class> dst_class,
|
|
JValue* unboxed_value) {
|
|
return UnboxPrimitive(o, dst_class, nullptr, unboxed_value);
|
|
}
|
|
|
|
ObjPtr<mirror::Class> GetCallingClass(Thread* self, size_t num_frames) {
|
|
NthCallerVisitor visitor(self, num_frames);
|
|
visitor.WalkStack();
|
|
return visitor.caller != nullptr ? visitor.caller->GetDeclaringClass() : nullptr;
|
|
}
|
|
|
|
bool VerifyAccess(Thread* self,
|
|
ObjPtr<mirror::Object> obj,
|
|
ObjPtr<mirror::Class> declaring_class,
|
|
uint32_t access_flags,
|
|
ObjPtr<mirror::Class>* calling_class,
|
|
size_t num_frames) {
|
|
if ((access_flags & kAccPublic) != 0) {
|
|
return true;
|
|
}
|
|
ObjPtr<mirror::Class> klass = GetCallingClass(self, num_frames);
|
|
if (UNLIKELY(klass == nullptr)) {
|
|
// The caller is an attached native thread.
|
|
return false;
|
|
}
|
|
*calling_class = klass;
|
|
return VerifyAccess(obj, declaring_class, access_flags, klass);
|
|
}
|
|
|
|
bool VerifyAccess(ObjPtr<mirror::Object> obj,
|
|
ObjPtr<mirror::Class> declaring_class,
|
|
uint32_t access_flags,
|
|
ObjPtr<mirror::Class> calling_class) {
|
|
if (calling_class == declaring_class) {
|
|
return true;
|
|
}
|
|
ScopedAssertNoThreadSuspension sants("verify-access");
|
|
if ((access_flags & kAccPrivate) != 0) {
|
|
return false;
|
|
}
|
|
if ((access_flags & kAccProtected) != 0) {
|
|
if (obj != nullptr && !obj->InstanceOf(calling_class) &&
|
|
!declaring_class->IsInSamePackage(calling_class)) {
|
|
return false;
|
|
} else if (declaring_class->IsAssignableFrom(calling_class)) {
|
|
return true;
|
|
}
|
|
}
|
|
return declaring_class->IsInSamePackage(calling_class);
|
|
}
|
|
|
|
void InvalidReceiverError(ObjPtr<mirror::Object> o, ObjPtr<mirror::Class> c) {
|
|
std::string expected_class_name(mirror::Class::PrettyDescriptor(c));
|
|
std::string actual_class_name(mirror::Object::PrettyTypeOf(o));
|
|
ThrowIllegalArgumentException(StringPrintf("Expected receiver of type %s, but got %s",
|
|
expected_class_name.c_str(),
|
|
actual_class_name.c_str()).c_str());
|
|
}
|
|
|
|
// This only works if there's one reference which points to the object in obj.
|
|
// Will need to be fixed if there's cases where it's not.
|
|
void UpdateReference(Thread* self, jobject obj, ObjPtr<mirror::Object> result) {
|
|
IndirectRef ref = reinterpret_cast<IndirectRef>(obj);
|
|
IndirectRefKind kind = IndirectReferenceTable::GetIndirectRefKind(ref);
|
|
if (kind == kLocal) {
|
|
self->GetJniEnv()->UpdateLocal(obj, result);
|
|
} else if (kind == kJniTransitionOrInvalid) {
|
|
LOG(FATAL) << "Unsupported UpdateReference for kind kJniTransitionOrInvalid";
|
|
} else if (kind == kGlobal) {
|
|
self->GetJniEnv()->GetVm()->UpdateGlobal(self, ref, result);
|
|
} else {
|
|
DCHECK_EQ(kind, kWeakGlobal);
|
|
self->GetJniEnv()->GetVm()->UpdateWeakGlobal(self, ref, result);
|
|
}
|
|
}
|
|
|
|
} // namespace art
|