113 lines
5.7 KiB
C++
113 lines
5.7 KiB
C++
/*
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* Copyright (C) 2015 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <WebCore/ResourceError.h>
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#include <WebCore/ResourceHandle.h>
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#include <WebCore/ResourceHandleClient.h>
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#include <WebCore/ResourceRequest.h>
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#include <WebCore/ResourceResponse.h>
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#include <WebCore/Timer.h>
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#include <wtf/CompletionHandler.h>
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// This class triggers asynchronous loads independent of the networking context staying alive (i.e., auditing pingbacks).
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// The object just needs to live long enough to ensure the message was actually sent.
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// As soon as any callback is received from the ResourceHandle, this class will cancel the load and delete itself.
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class PingHandle final : private WebCore::ResourceHandleClient {
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WTF_MAKE_NONCOPYABLE(PingHandle); WTF_MAKE_FAST_ALLOCATED;
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public:
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PingHandle(WebCore::NetworkingContext* networkingContext, const WebCore::ResourceRequest& request, bool shouldUseCredentialStorage, bool shouldFollowRedirects, CompletionHandler<void(const WebCore::ResourceError&, const WebCore::ResourceResponse&)>&& completionHandler)
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: m_currentRequest(request)
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, m_timeoutTimer(*this, &PingHandle::timeoutTimerFired)
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, m_shouldUseCredentialStorage(shouldUseCredentialStorage)
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, m_shouldFollowRedirects(shouldFollowRedirects)
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, m_completionHandler(WTFMove(completionHandler))
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{
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bool defersLoading = false;
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bool shouldContentSniff = false;
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bool shouldContentEncodingSniff = true;
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m_handle = WebCore::ResourceHandle::create(networkingContext, request, this, defersLoading, shouldContentSniff, shouldContentEncodingSniff, nullptr, false);
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// If the server never responds, this object will hang around forever.
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// Set a very generous timeout, just in case.
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m_timeoutTimer.startOneShot(60000_s);
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}
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private:
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void willSendRequestAsync(WebCore::ResourceHandle*, WebCore::ResourceRequest&& request, WebCore::ResourceResponse&&, CompletionHandler<void(WebCore::ResourceRequest&&)>&& completionHandler) final
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{
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m_currentRequest = WTFMove(request);
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if (m_shouldFollowRedirects) {
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completionHandler(WebCore::ResourceRequest { m_currentRequest });
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return;
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}
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completionHandler({ });
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pingLoadComplete(WebCore::ResourceError { String(), 0, m_currentRequest.url(), "Not allowed to follow redirects"_s, WebCore::ResourceError::Type::AccessControl });
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}
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void didReceiveResponseAsync(WebCore::ResourceHandle*, WebCore::ResourceResponse&& response, CompletionHandler<void()>&& completionHandler) final
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{
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completionHandler();
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pingLoadComplete({ }, response);
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}
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void didReceiveBuffer(WebCore::ResourceHandle*, Ref<WebCore::SharedBuffer>&&, int) final { pingLoadComplete(); }
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void didFinishLoading(WebCore::ResourceHandle*, const WebCore::NetworkLoadMetrics&) final { pingLoadComplete(); }
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void didFail(WebCore::ResourceHandle*, const WebCore::ResourceError& error) final { pingLoadComplete(error); }
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bool shouldUseCredentialStorage(WebCore::ResourceHandle*) final { return m_shouldUseCredentialStorage; }
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void timeoutTimerFired() { pingLoadComplete(WebCore::ResourceError { String(), 0, m_currentRequest.url(), "Load timed out"_s, WebCore::ResourceError::Type::Timeout }); }
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#if USE(PROTECTION_SPACE_AUTH_CALLBACK)
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void canAuthenticateAgainstProtectionSpaceAsync(WebCore::ResourceHandle*, const WebCore::ProtectionSpace&, CompletionHandler<void(bool)>&& completionHandler)
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{
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completionHandler(false);
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pingLoadComplete(WebCore::ResourceError { String { }, 0, m_currentRequest.url(), "Not allowed to authenticate"_s, WebCore::ResourceError::Type::AccessControl });
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}
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#endif
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void pingLoadComplete(const WebCore::ResourceError& error = { }, const WebCore::ResourceResponse& response = { })
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{
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if (auto completionHandler = std::exchange(m_completionHandler, nullptr))
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completionHandler(error, response);
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delete this;
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}
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virtual ~PingHandle()
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{
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ASSERT(!m_completionHandler);
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if (m_handle) {
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ASSERT(m_handle->client() == this);
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m_handle->clearClient();
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m_handle->cancel();
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}
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}
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RefPtr<WebCore::ResourceHandle> m_handle;
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WebCore::ResourceRequest m_currentRequest;
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WebCore::Timer m_timeoutTimer;
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bool m_shouldUseCredentialStorage;
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bool m_shouldFollowRedirects;
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CompletionHandler<void(const WebCore::ResourceError&, const WebCore::ResourceResponse&)> m_completionHandler;
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};
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