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/*
* Copyright (C) 2016 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "config.h"
#include "StructuredClone.h"
#include "JSDOMBinding.h"
#include "JSDOMExceptionHandling.h"
#include <JavaScriptCore/JSTypedArrays.h>
namespace WebCore {
using namespace JSC;
enum class CloneMode {
Full,
Partial,
};
static EncodedJSValue cloneArrayBufferImpl(JSGlobalObject* globalObject, ExecState* state, CloneMode mode)
{
ASSERT(state);
ASSERT(state->argumentCount());
ASSERT(state->lexicalGlobalObject() == globalObject);
VM& vm = globalObject->vm();
auto* buffer = toUnsharedArrayBuffer(vm, state->uncheckedArgument(0));
if (!buffer) {
auto scope = DECLARE_THROW_SCOPE(vm);
throwDataCloneError(*state, scope);
return { };
}
if (mode == CloneMode::Partial) {
ASSERT(state->argumentCount() == 3);
int srcByteOffset = static_cast<int>(state->uncheckedArgument(1).toNumber(state));
int srcLength = static_cast<int>(state->uncheckedArgument(2).toNumber(state));
return JSValue::encode(JSArrayBuffer::create(state->vm(), globalObject->arrayBufferStructure(ArrayBufferSharingMode::Default), buffer->slice(srcByteOffset, srcByteOffset + srcLength)));
}
return JSValue::encode(JSArrayBuffer::create(state->vm(), globalObject->arrayBufferStructure(ArrayBufferSharingMode::Default), ArrayBuffer::tryCreate(buffer->data(), buffer->byteLength())));
}
EncodedJSValue JSC_HOST_CALL cloneArrayBuffer(JSGlobalObject* globalObject, CallFrame* callFrame)
{
return cloneArrayBufferImpl(globalObject, callFrame, CloneMode::Partial);
}
EncodedJSValue JSC_HOST_CALL structuredCloneArrayBuffer(JSGlobalObject* globalObject, CallFrame* callFrame)
{
return cloneArrayBufferImpl(globalObject, callFrame, CloneMode::Full);
}
EncodedJSValue JSC_HOST_CALL structuredCloneArrayBufferView(JSGlobalObject* globalObject, CallFrame* callFrame)
{
ASSERT(callFrame);
ASSERT(callFrame->argumentCount());
JSValue value = callFrame->uncheckedArgument(0);
VM& vm = globalObject->vm();
auto* bufferView = jsDynamicCast<JSArrayBufferView*>(vm, value);
ASSERT(bufferView);
auto* buffer = bufferView->unsharedBuffer();
if (!buffer) {
auto scope = DECLARE_THROW_SCOPE(vm);
throwDataCloneError(*callFrame, scope);
return { };
}
auto bufferClone = ArrayBuffer::tryCreate(buffer->data(), buffer->byteLength());
Structure* structure = bufferView->structure(vm);
if (jsDynamicCast<JSInt8Array*>(vm, value))
return JSValue::encode(JSInt8Array::create(callFrame, structure, WTFMove(bufferClone), bufferView->byteOffset(), bufferView->length()));
if (jsDynamicCast<JSInt16Array*>(vm, value))
return JSValue::encode(JSInt16Array::create(callFrame, structure, WTFMove(bufferClone), bufferView->byteOffset(), bufferView->length()));
if (jsDynamicCast<JSInt32Array*>(vm, value))
return JSValue::encode(JSInt32Array::create(callFrame, structure, WTFMove(bufferClone), bufferView->byteOffset(), bufferView->length()));
if (jsDynamicCast<JSUint8Array*>(vm, value))
return JSValue::encode(JSUint8Array::create(callFrame, structure, WTFMove(bufferClone), bufferView->byteOffset(), bufferView->length()));
if (jsDynamicCast<JSUint8ClampedArray*>(vm, value))
return JSValue::encode(JSUint8ClampedArray::create(callFrame, structure, WTFMove(bufferClone), bufferView->byteOffset(), bufferView->length()));
if (jsDynamicCast<JSUint16Array*>(vm, value))
return JSValue::encode(JSUint16Array::create(callFrame, structure, WTFMove(bufferClone), bufferView->byteOffset(), bufferView->length()));
if (jsDynamicCast<JSUint32Array*>(vm, value))
return JSValue::encode(JSUint32Array::create(callFrame, structure, WTFMove(bufferClone), bufferView->byteOffset(), bufferView->length()));
if (jsDynamicCast<JSFloat32Array*>(vm, value))
return JSValue::encode(JSFloat32Array::create(callFrame, structure, WTFMove(bufferClone), bufferView->byteOffset(), bufferView->length()));
if (jsDynamicCast<JSFloat64Array*>(vm, value))
return JSValue::encode(JSFloat64Array::create(callFrame, structure, WTFMove(bufferClone), bufferView->byteOffset(), bufferView->length()));
if (jsDynamicCast<JSDataView*>(vm, value))
return JSValue::encode(JSDataView::create(callFrame, structure, WTFMove(bufferClone), bufferView->byteOffset(), bufferView->length()));
ASSERT_NOT_REACHED();
return JSValue::encode(jsUndefined());
}
} // namespace WebCore