| /* |
| * Copyright (C) 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 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 "IPCTester.h" |
| |
| #if ENABLE(IPC_TESTING_API) |
| #include "Connection.h" |
| #include "Decoder.h" |
| |
| #include <dlfcn.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <wtf/CryptographicallyRandomNumber.h> |
| #include <wtf/threads/BinarySemaphore.h> |
| |
| // The tester API. |
| extern "C" { |
| // Returns 0 if driver should continue. |
| typedef int (*WKMessageTestSendMessageFunc)(const uint8_t* data, size_t sz, void* context); |
| typedef void (*WKMessageTestDriverFunc)(WKMessageTestSendMessageFunc sendMessageFunc, void* context); |
| } |
| |
| namespace { |
| struct SendMessageContext { |
| IPC::Connection& connection; |
| std::atomic<bool>& shouldStop; |
| }; |
| } |
| |
| extern "C" { |
| |
| static void defaultTestDriver(WKMessageTestSendMessageFunc sendMessageFunc, void* context) |
| { |
| Vector<uint8_t> data(1000); |
| for (int i = 0; i < 1000; i++) { |
| cryptographicallyRandomValues(data.data(), data.size()); |
| int ret = sendMessageFunc(data.data(), data.size(), context); |
| if (ret) |
| return; |
| } |
| } |
| |
| static int sendTestMessage(const uint8_t* data, size_t size, void* context) |
| { |
| auto messageContext = reinterpret_cast<SendMessageContext*>(context); |
| if (messageContext->shouldStop) |
| return 1; |
| auto& testedConnection = messageContext->connection; |
| if (!testedConnection.isValid()) |
| return 1; |
| BinarySemaphore semaphore; |
| auto decoder = IPC::Decoder::create(data, size, [&semaphore] (const uint8_t*, size_t) { semaphore.signal(); }, { }); // NOLINT |
| if (decoder) { |
| testedConnection.dispatchIncomingMessageForTesting(WTFMove(decoder)); |
| semaphore.wait(); |
| } |
| return 0; |
| } |
| |
| } |
| |
| namespace WebKit { |
| |
| static WKMessageTestDriverFunc messageTestDriver(String&& driverName) |
| { |
| if (driverName.isEmpty() || driverName == "default") |
| driverName = getenv("WEBKIT_MESSAGE_TEST_DEFAULT_DRIVER"); |
| if (driverName.isEmpty() || driverName == "default") |
| return defaultTestDriver; |
| auto testDriver = reinterpret_cast<WKMessageTestDriverFunc>(dlsym(RTLD_DEFAULT, driverName.utf8().data())); |
| RELEASE_ASSERT(testDriver); |
| return testDriver; |
| } |
| |
| static void runMessageTesting(IPC::Connection& connection, std::atomic<bool>& shouldStop, String&& driverName) |
| { |
| connection.setIgnoreInvalidMessageForTesting(); |
| SendMessageContext context { connection, shouldStop }; |
| auto driver = messageTestDriver(WTFMove(driverName)); |
| driver(sendTestMessage, &context); |
| } |
| |
| IPCTester::IPCTester() = default; |
| |
| IPCTester::~IPCTester() |
| { |
| stopIfNeeded(); |
| } |
| |
| void IPCTester::startMessageTesting(IPC::Connection& connection, String&& driverName) |
| { |
| if (!m_testQueue) |
| m_testQueue = WorkQueue::create("IPC testing work queue"); |
| m_testQueue->dispatch([connection = Ref { connection }, &shouldStop = m_shouldStop, driverName = WTFMove(driverName)]() mutable { |
| runMessageTesting(connection, shouldStop, WTFMove(driverName)); |
| }); |
| } |
| |
| void IPCTester::stopMessageTesting(CompletionHandler<void()> completionHandler) |
| { |
| stopIfNeeded(); |
| completionHandler(); |
| } |
| |
| void IPCTester::stopIfNeeded() |
| { |
| if (m_testQueue) { |
| m_shouldStop = true; |
| m_testQueue->dispatchSync([] { }); |
| m_testQueue = nullptr; |
| } |
| } |
| |
| } |
| |
| #endif |