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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/342213636): Remove this and spanify to fix the errors.
#pragma allow_unsafe_buffers
#endif
#include "content/renderer/java/gin_java_bridge_value_converter.h"
#include <stddef.h>
#include <stdint.h>
#include <cmath>
#include <memory>
#include <utility>
#include "base/check.h"
#include "base/memory/ptr_util.h"
#include "base/values.h"
#include "content/common/android/gin_java_bridge_value.h"
#include "content/renderer/java/gin_java_bridge_object.h"
#include "gin/array_buffer.h"
#include "v8/include/v8-typed-array.h"
namespace content {
GinJavaBridgeValueConverter::GinJavaBridgeValueConverter()
: converter_(V8ValueConverter::Create()) {
converter_->SetDateAllowed(false);
converter_->SetRegExpAllowed(false);
converter_->SetFunctionAllowed(true);
converter_->SetStrategy(this);
}
GinJavaBridgeValueConverter::~GinJavaBridgeValueConverter() {
}
v8::Local<v8::Value> GinJavaBridgeValueConverter::ToV8Value(
const base::Value* value,
v8::Local<v8::Context> context) const {
CHECK(value);
return converter_->ToV8Value(*value, context);
}
std::unique_ptr<base::Value> GinJavaBridgeValueConverter::FromV8Value(
v8::Local<v8::Value> value,
v8::Local<v8::Context> context) const {
return converter_->FromV8Value(value, context);
}
bool GinJavaBridgeValueConverter::FromV8Object(
v8::Local<v8::Object> value,
std::unique_ptr<base::Value>* out,
v8::Isolate* isolate) {
GinJavaBridgeObject* unwrapped;
if (!gin::ConvertFromV8(isolate, value, &unwrapped)) {
return false;
}
*out = GinJavaBridgeValue::CreateObjectIDValue(unwrapped->object_id());
return true;
}
namespace {
class TypedArraySerializer {
public:
virtual ~TypedArraySerializer() {}
static std::unique_ptr<TypedArraySerializer> Create(
v8::Local<v8::TypedArray> typed_array);
virtual void serializeTo(char* data,
size_t data_length,
base::Value::List* out) = 0;
protected:
TypedArraySerializer() {}
};
template <typename ElementType, typename ListType>
class TypedArraySerializerImpl : public TypedArraySerializer {
public:
static std::unique_ptr<TypedArraySerializer> Create(
v8::Local<v8::TypedArray> typed_array) {
return base::WrapUnique(
new TypedArraySerializerImpl<ElementType, ListType>(typed_array));
}
TypedArraySerializerImpl(const TypedArraySerializerImpl&) = delete;
TypedArraySerializerImpl& operator=(const TypedArraySerializerImpl&) = delete;
void serializeTo(char* data,
size_t data_length,
base::Value::List* out) override {
DCHECK_EQ(data_length, typed_array_->Length() * sizeof(ElementType));
for (ElementType *element = reinterpret_cast<ElementType*>(data),
*end = element + typed_array_->Length();
element != end;
++element) {
// Serialize the uint32 value as the binary type since base::Value
// supports only int for the integer type, and the uint8 and the uint16
// with Base::Value since they fit into int.
if (std::is_same<ElementType, uint32_t>::value) {
out->Append(base::Value::FromUniquePtrValue(
GinJavaBridgeValue::CreateUInt32Value(*element)));
} else {
out->Append(base::Value(ListType(*element)));
}
}
}
private:
explicit TypedArraySerializerImpl(v8::Local<v8::TypedArray> typed_array)
: typed_array_(typed_array) {}
v8::Local<v8::TypedArray> typed_array_;
};
// static
std::unique_ptr<TypedArraySerializer> TypedArraySerializer::Create(
v8::Local<v8::TypedArray> typed_array) {
if (typed_array->IsInt8Array()) {
return TypedArraySerializerImpl<int8_t, int>::Create(typed_array);
} else if (typed_array->IsUint8Array() ||
typed_array->IsUint8ClampedArray()) {
return TypedArraySerializerImpl<uint8_t, int>::Create(typed_array);
} else if (typed_array->IsInt16Array()) {
return TypedArraySerializerImpl<int16_t, int>::Create(typed_array);
} else if (typed_array->IsUint16Array()) {
return TypedArraySerializerImpl<uint16_t, int>::Create(typed_array);
} else if (typed_array->IsInt32Array()) {
return TypedArraySerializerImpl<int32_t, int>::Create(typed_array);
} else if (typed_array->IsUint32Array()) {
return TypedArraySerializerImpl<uint32_t, int>::Create(typed_array);
} else if (typed_array->IsFloat32Array()) {
return TypedArraySerializerImpl<float, double>::Create(typed_array);
} else if (typed_array->IsFloat64Array()) {
return TypedArraySerializerImpl<double, double>::Create(typed_array);
}
NOTREACHED();
}
} // namespace
bool GinJavaBridgeValueConverter::FromV8ArrayBuffer(
v8::Local<v8::Object> value,
std::unique_ptr<base::Value>* out,
v8::Isolate* isolate) {
if (!value->IsTypedArray()) {
*out = GinJavaBridgeValue::CreateUndefinedValue();
return true;
}
char* data = nullptr;
size_t data_length = 0;
gin::ArrayBufferView view;
if (ConvertFromV8(isolate, value.As<v8::ArrayBufferView>(), &view)) {
data = reinterpret_cast<char*>(view.bytes());
data_length = view.num_bytes();
}
if (!data) {
*out = GinJavaBridgeValue::CreateUndefinedValue();
return true;
}
base::Value::List result;
std::unique_ptr<TypedArraySerializer> serializer(
TypedArraySerializer::Create(value.As<v8::TypedArray>()));
serializer->serializeTo(data, data_length, &result);
*out = std::make_unique<base::Value>(std::move(result));
return true;
}
bool GinJavaBridgeValueConverter::FromV8Number(
v8::Local<v8::Number> value,
std::unique_ptr<base::Value>* out) {
double double_value = value->Value();
if (std::isfinite(double_value))
return false;
*out = GinJavaBridgeValue::CreateNonFiniteValue(double_value);
return true;
}
bool GinJavaBridgeValueConverter::FromV8Undefined(
std::unique_ptr<base::Value>* out) {
*out = GinJavaBridgeValue::CreateUndefinedValue();
return true;
}
} // namespace content
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