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/*
* Copyright (C) 2017-2021 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 CANON 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 CANON 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 "ReadableStream.h"
#include "Exception.h"
#include "ExceptionCode.h"
#include "JSDOMConvertSequences.h"
#include "JSReadableStreamSink.h"
#include "JSReadableStreamSource.h"
#include "WebCoreJSClientData.h"
namespace WebCore {
using namespace JSC;
static inline ExceptionOr<JSObject*> invokeConstructor(JSC::JSGlobalObject& lexicalGlobalObject, const JSC::Identifier& identifier, const Function<void(MarkedArgumentBuffer&, JSC::JSGlobalObject&, JSDOMGlobalObject&)>& buildArguments)
{
VM& vm = lexicalGlobalObject.vm();
auto scope = DECLARE_THROW_SCOPE(vm);
auto& globalObject = *JSC::jsCast<JSDOMGlobalObject*>(&lexicalGlobalObject);
auto constructorValue = globalObject.get(&lexicalGlobalObject, identifier);
EXCEPTION_ASSERT(!scope.exception() || vm.hasPendingTerminationException());
RETURN_IF_EXCEPTION(scope, Exception { ExistingExceptionError });
auto constructor = JSC::asObject(constructorValue);
auto constructData = JSC::getConstructData(constructor);
ASSERT(constructData.type != CallData::Type::None);
MarkedArgumentBuffer args;
buildArguments(args, lexicalGlobalObject, globalObject);
ASSERT(!args.hasOverflowed());
JSObject* object = JSC::construct(&lexicalGlobalObject, constructor, constructData, args);
ASSERT(!!scope.exception() == !object);
EXCEPTION_ASSERT(!scope.exception() || vm.hasPendingTerminationException());
RETURN_IF_EXCEPTION(scope, Exception { ExistingExceptionError });
return object;
}
ExceptionOr<Ref<ReadableStream>> ReadableStream::create(JSC::JSGlobalObject& lexicalGlobalObject, RefPtr<ReadableStreamSource>&& source)
{
auto& builtinNames = WebCore::builtinNames(lexicalGlobalObject.vm());
auto objectOrException = invokeConstructor(lexicalGlobalObject, builtinNames.ReadableStreamPrivateName(), [&source](auto& args, auto& lexicalGlobalObject, auto& globalObject) {
args.append(source ? toJSNewlyCreated(&lexicalGlobalObject, &globalObject, source.releaseNonNull()) : JSC::jsUndefined());
});
if (objectOrException.hasException())
return objectOrException.releaseException();
return create(*JSC::jsCast<JSDOMGlobalObject*>(&lexicalGlobalObject), *jsCast<JSReadableStream*>(objectOrException.releaseReturnValue()));
}
ExceptionOr<Ref<ReadableStream>> ReadableStream::create(JSC::JSGlobalObject& lexicalGlobalObject, RefPtr<ReadableStreamSource>&& source, JSC::JSValue nativePtr)
{
auto& builtinNames = WebCore::builtinNames(lexicalGlobalObject.vm());
RELEASE_ASSERT(source != nullptr);
auto objectOrException = invokeConstructor(lexicalGlobalObject, builtinNames.ReadableStreamPrivateName(), [&source, nativePtr](auto& args, auto& lexicalGlobalObject, auto& globalObject) {
auto sourceStream = toJSNewlyCreated(&lexicalGlobalObject, &globalObject, source.releaseNonNull());
auto tag = WebCore::clientData(lexicalGlobalObject.vm())->builtinNames().bunNativePtrPrivateName();
sourceStream.getObject()->putDirect(lexicalGlobalObject.vm(), tag, nativePtr, JSC::PropertyAttribute::DontDelete | JSC::PropertyAttribute::DontEnum);
args.append(sourceStream);
});
if (objectOrException.hasException())
return objectOrException.releaseException();
return create(*JSC::jsCast<JSDOMGlobalObject*>(&lexicalGlobalObject), *jsCast<JSReadableStream*>(objectOrException.releaseReturnValue()));
}
static inline std::optional<JSC::JSValue> invokeReadableStreamFunction(JSC::JSGlobalObject& lexicalGlobalObject, const JSC::Identifier& identifier, JSC::JSValue thisValue, const JSC::MarkedArgumentBuffer& arguments)
{
JSC::VM& vm = lexicalGlobalObject.vm();
JSC::JSLockHolder lock(vm);
auto function = lexicalGlobalObject.get(&lexicalGlobalObject, identifier);
ASSERT(function.isCallable());
auto scope = DECLARE_CATCH_SCOPE(vm);
auto callData = JSC::getCallData(function);
auto result = call(&lexicalGlobalObject, function, callData, thisValue, arguments);
EXCEPTION_ASSERT(!scope.exception() || vm.hasPendingTerminationException());
if (scope.exception())
return {};
return result;
}
void ReadableStream::pipeTo(ReadableStreamSink& sink)
{
auto& lexicalGlobalObject = *m_globalObject;
auto* clientData = static_cast<JSVMClientData*>(lexicalGlobalObject.vm().clientData);
auto& privateName = clientData->builtinFunctions().readableStreamInternalsBuiltins().readableStreamPipeToPrivateName();
MarkedArgumentBuffer arguments;
arguments.append(readableStream());
arguments.append(toJS(&lexicalGlobalObject, m_globalObject.get(), sink));
ASSERT(!arguments.hasOverflowed());
invokeReadableStreamFunction(lexicalGlobalObject, privateName, JSC::jsUndefined(), arguments);
}
std::optional<std::pair<Ref<ReadableStream>, Ref<ReadableStream>>> ReadableStream::tee()
{
auto& lexicalGlobalObject = *m_globalObject;
auto* clientData = static_cast<JSVMClientData*>(lexicalGlobalObject.vm().clientData);
auto& privateName = clientData->builtinFunctions().readableStreamInternalsBuiltins().readableStreamTeePrivateName();
MarkedArgumentBuffer arguments;
arguments.append(readableStream());
arguments.append(JSC::jsBoolean(true));
ASSERT(!arguments.hasOverflowed());
auto returnedValue = invokeReadableStreamFunction(lexicalGlobalObject, privateName, JSC::jsUndefined(), arguments);
if (!returnedValue)
return {};
auto results = Detail::SequenceConverter<IDLInterface<ReadableStream>>::convert(lexicalGlobalObject, *returnedValue);
ASSERT(results.size() == 2);
return std::make_pair(results[0].releaseNonNull(), results[1].releaseNonNull());
}
void ReadableStream::lock()
{
auto& builtinNames = WebCore::builtinNames(m_globalObject->vm());
invokeConstructor(*m_globalObject, builtinNames.ReadableStreamDefaultReaderPrivateName(), [this](auto& args, auto&, auto&) {
args.append(readableStream());
});
}
void ReadableStream::cancel(const Exception& exception)
{
auto& lexicalGlobalObject = *m_globalObject;
auto* clientData = static_cast<JSVMClientData*>(lexicalGlobalObject.vm().clientData);
auto& privateName = clientData->builtinFunctions().readableStreamInternalsBuiltins().readableStreamCancelPrivateName();
auto& vm = lexicalGlobalObject.vm();
JSC::JSLockHolder lock(vm);
auto scope = DECLARE_CATCH_SCOPE(vm);
auto value = createDOMException(&lexicalGlobalObject, exception.code(), exception.message());
if (UNLIKELY(scope.exception())) {
ASSERT(vm.hasPendingTerminationException());
return;
}
MarkedArgumentBuffer arguments;
arguments.append(readableStream());
arguments.append(value);
ASSERT(!arguments.hasOverflowed());
invokeReadableStreamFunction(lexicalGlobalObject, privateName, JSC::jsUndefined(), arguments);
}
static inline bool checkReadableStream(JSDOMGlobalObject& globalObject, JSReadableStream* readableStream, JSC::JSValue function)
{
auto& lexicalGlobalObject = globalObject;
ASSERT(function);
JSC::MarkedArgumentBuffer arguments;
arguments.append(readableStream);
ASSERT(!arguments.hasOverflowed());
auto& vm = lexicalGlobalObject.vm();
auto scope = DECLARE_CATCH_SCOPE(vm);
auto callData = JSC::getCallData(function);
ASSERT(callData.type != JSC::CallData::Type::None);
auto result = call(&lexicalGlobalObject, function, callData, JSC::jsUndefined(), arguments);
EXCEPTION_ASSERT(!scope.exception() || vm.hasPendingTerminationException());
return result.isTrue() || scope.exception();
}
bool ReadableStream::isLocked() const
{
return checkReadableStream(*globalObject(), readableStream(), globalObject()->builtinInternalFunctions().readableStreamInternals().m_isReadableStreamLockedFunction.get());
}
bool ReadableStream::isLocked(JSGlobalObject* globalObject, JSReadableStream* readableStream)
{
auto* dom = reinterpret_cast<JSDOMGlobalObject*>(globalObject);
return checkReadableStream(*dom, readableStream, dom->builtinInternalFunctions().readableStreamInternals().m_isReadableStreamLockedFunction.get());
}
bool ReadableStream::isDisturbed(JSGlobalObject* globalObject, JSReadableStream* readableStream)
{
auto* dom = reinterpret_cast<JSDOMGlobalObject*>(globalObject);
return checkReadableStream(*dom, readableStream, dom->builtinInternalFunctions().readableStreamInternals().m_isReadableStreamDisturbedFunction.get());
}
bool ReadableStream::isDisturbed() const
{
return checkReadableStream(*globalObject(), readableStream(), globalObject()->builtinInternalFunctions().readableStreamInternals().m_isReadableStreamDisturbedFunction.get());
}
}
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