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/*
* Copyright (C) 2022 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. AND ITS CONTRIBUTORS ``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 ITS 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 "IPCStreamTester.h"
#if ENABLE(IPC_TESTING_API)
#include "Decoder.h"
#include "IPCStreamTesterMessages.h"
#include "IPCStreamTesterProxyMessages.h"
#include "IPCUtilities.h"
#include "StreamConnectionWorkQueue.h"
#include "StreamServerConnection.h"
#include <wtf/WTFProcess.h>
#if USE(FOUNDATION)
#include <CoreFoundation/CoreFoundation.h>
#endif
namespace WebKit {
RefPtr<IPCStreamTester> IPCStreamTester::create(IPCStreamTesterIdentifier identifier, IPC::StreamServerConnection::Handle&& connectionHandle)
{
auto tester = adoptRef(*new IPCStreamTester(identifier, WTFMove(connectionHandle)));
tester->initialize();
return tester;
}
IPCStreamTester::IPCStreamTester(IPCStreamTesterIdentifier identifier, IPC::StreamServerConnection::Handle&& connectionHandle)
: m_workQueue(IPC::StreamConnectionWorkQueue::create("IPCStreamTester work queue"))
, m_streamConnection(IPC::StreamServerConnection::tryCreate(WTFMove(connectionHandle)).releaseNonNull())
, m_identifier(identifier)
{
}
IPCStreamTester::~IPCStreamTester() = default;
void IPCStreamTester::initialize()
{
workQueue().dispatch([this] {
m_streamConnection->open(workQueue());
m_streamConnection->startReceivingMessages(*this, Messages::IPCStreamTester::messageReceiverName(), m_identifier.toUInt64());
m_streamConnection->send(Messages::IPCStreamTesterProxy::WasCreated(workQueue().wakeUpSemaphore(), m_streamConnection->clientWaitSemaphore()), m_identifier);
});
}
void IPCStreamTester::stopListeningForIPC(Ref<IPCStreamTester>&& refFromConnection)
{
workQueue().dispatch([this] {
m_streamConnection->stopReceivingMessages(Messages::IPCStreamTester::messageReceiverName(), m_identifier.toUInt64());
m_streamConnection->invalidate();
});
workQueue().stopAndWaitForCompletion();
}
void IPCStreamTester::syncMessageReturningSharedMemory1(uint32_t byteCount, CompletionHandler<void(SharedMemory::Handle)>&& completionHandler)
{
auto result = [&]() -> SharedMemory::Handle {
auto sharedMemory = WebKit::SharedMemory::allocate(byteCount);
if (!sharedMemory)
return { };
auto handle = sharedMemory->createHandle(SharedMemory::Protection::ReadOnly);
if (!handle)
return { };
uint8_t* data = static_cast<uint8_t*>(sharedMemory->data());
for (size_t i = 0; i < sharedMemory->size(); ++i)
data[i] = i;
return WTFMove(*handle);
}();
completionHandler(WTFMove(result));
}
void IPCStreamTester::syncCrashOnZero(int32_t value, CompletionHandler<void(int32_t)>&& completionHandler)
{
if (!value) {
// Use exit so that we don't leave a crash report.
terminateProcess(EXIT_SUCCESS);
}
completionHandler(value);
}
void IPCStreamTester::asyncMessage(bool value, CompletionHandler<void(bool)>&& completionHandler)
{
completionHandler(!value);
}
#if USE(FOUNDATION)
namespace {
struct UseCountHolder {
std::shared_ptr<bool> value;
};
}
static void releaseUseCountHolder(CFAllocatorRef, const void* value)
{
delete static_cast<const UseCountHolder*>(value);
}
#endif
void IPCStreamTester::checkAutoreleasePool(CompletionHandler<void(int32_t)>&& completionHandler)
{
if (!m_autoreleasePoolCheckValue)
m_autoreleasePoolCheckValue = std::make_shared<bool>(true);
completionHandler(m_autoreleasePoolCheckValue.use_count());
#if USE(FOUNDATION)
static const CFArrayCallBacks arrayCallbacks {
.release = releaseUseCountHolder,
};
const void* values[] = { new UseCountHolder { m_autoreleasePoolCheckValue } };
CFArrayRef releaseDetector = CFArrayCreate(kCFAllocatorDefault, values, 1, &arrayCallbacks);
CFAutorelease(releaseDetector);
#endif
}
}
#endif
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