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/*
* Copyright (C) 2017 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 "NetworkCORSPreflightChecker.h"
#include "AuthenticationChallengeDisposition.h"
#include "AuthenticationManager.h"
#include "Logging.h"
#include "NetworkLoadParameters.h"
#include "NetworkProcess.h"
#include "NetworkResourceLoader.h"
#include "WebErrors.h"
#include <WebCore/CrossOriginAccessControl.h>
#include <WebCore/SecurityOrigin.h>
#define CORS_CHECKER_RELEASE_LOG(fmt, ...) RELEASE_LOG(Network, "%p - NetworkCORSPreflightChecker::" fmt, this, ##__VA_ARGS__)
namespace WebKit {
using namespace WebCore;
NetworkCORSPreflightChecker::NetworkCORSPreflightChecker(NetworkProcess& networkProcess, NetworkResourceLoader* networkResourceLoader, Parameters&& parameters, bool shouldCaptureExtraNetworkLoadMetrics, CompletionCallback&& completionCallback)
: m_parameters(WTFMove(parameters))
, m_networkProcess(networkProcess)
, m_completionCallback(WTFMove(completionCallback))
, m_shouldCaptureExtraNetworkLoadMetrics(shouldCaptureExtraNetworkLoadMetrics)
, m_networkResourceLoader(networkResourceLoader)
{
}
NetworkCORSPreflightChecker::~NetworkCORSPreflightChecker()
{
if (m_task) {
ASSERT(m_task->client() == this);
m_task->clearClient();
m_task->cancel();
}
if (m_completionCallback)
m_completionCallback(ResourceError { ResourceError::Type::Cancellation });
}
void NetworkCORSPreflightChecker::startPreflight()
{
CORS_CHECKER_RELEASE_LOG("startPreflight");
NetworkLoadParameters loadParameters;
loadParameters.request = createAccessControlPreflightRequest(m_parameters.originalRequest, m_parameters.sourceOrigin, m_parameters.referrer, m_parameters.includeFetchMetadata);
loadParameters.advancedPrivacyProtections = m_parameters.advancedPrivacyProtections;
if (!m_parameters.userAgent.isNull())
loadParameters.request.setHTTPHeaderField(HTTPHeaderName::UserAgent, m_parameters.userAgent);
if (m_shouldCaptureExtraNetworkLoadMetrics)
m_loadInformation = NetworkTransactionInformation { NetworkTransactionInformation::Type::Preflight, loadParameters.request, { }, { } };
loadParameters.webPageProxyID = m_parameters.webPageProxyID;
loadParameters.allowPrivacyProxy = m_parameters.allowPrivacyProxy;
if (auto* networkSession = m_networkProcess->networkSession(m_parameters.sessionID)) {
m_task = NetworkDataTask::create(*networkSession, *this, WTFMove(loadParameters));
m_task->resume();
} else
ASSERT_NOT_REACHED();
}
void NetworkCORSPreflightChecker::willPerformHTTPRedirection(WebCore::ResourceResponse&& response, WebCore::ResourceRequest&&, RedirectCompletionHandler&& completionHandler)
{
if (m_shouldCaptureExtraNetworkLoadMetrics)
m_loadInformation.response = WTFMove(response);
CORS_CHECKER_RELEASE_LOG("willPerformHTTPRedirection");
completionHandler({ });
m_completionCallback(ResourceError { errorDomainWebKitInternal, 0, m_parameters.originalRequest.url(), makeString("Preflight response is not successful. Status code: ", response.httpStatusCode()), ResourceError::Type::AccessControl });
}
void NetworkCORSPreflightChecker::didReceiveChallenge(WebCore::AuthenticationChallenge&& challenge, NegotiatedLegacyTLS negotiatedLegacyTLS, ChallengeCompletionHandler&& completionHandler)
{
CORS_CHECKER_RELEASE_LOG("didReceiveChallenge, authentication scheme: %u", static_cast<unsigned>(challenge.protectionSpace().authenticationScheme()));
auto scheme = challenge.protectionSpace().authenticationScheme();
bool isTLSHandshake = scheme == ProtectionSpace::AuthenticationScheme::ServerTrustEvaluationRequested
|| scheme == ProtectionSpace::AuthenticationScheme::ClientCertificateRequested;
if (!isTLSHandshake) {
completionHandler(AuthenticationChallengeDisposition::UseCredential, { });
return;
}
m_networkProcess->authenticationManager().didReceiveAuthenticationChallenge(m_parameters.sessionID, m_parameters.webPageProxyID, m_parameters.topOrigin ? &m_parameters.topOrigin->data() : nullptr, challenge, negotiatedLegacyTLS, WTFMove(completionHandler));
}
void NetworkCORSPreflightChecker::didReceiveResponse(WebCore::ResourceResponse&& response, NegotiatedLegacyTLS, PrivateRelayed, ResponseCompletionHandler&& completionHandler)
{
CORS_CHECKER_RELEASE_LOG("didReceiveResponse");
if (m_shouldCaptureExtraNetworkLoadMetrics)
m_loadInformation.response = response;
m_response = WTFMove(response);
completionHandler(PolicyAction::Use);
}
void NetworkCORSPreflightChecker::didReceiveData(const WebCore::SharedBuffer&)
{
CORS_CHECKER_RELEASE_LOG("didReceiveData");
}
void NetworkCORSPreflightChecker::didCompleteWithError(const WebCore::ResourceError& preflightError, const WebCore::NetworkLoadMetrics& metrics)
{
if (m_shouldCaptureExtraNetworkLoadMetrics)
m_loadInformation.metrics = metrics;
if (!preflightError.isNull()) {
CORS_CHECKER_RELEASE_LOG("didCompleteWithError");
auto error = preflightError;
if (error.isNull() || error.isGeneral())
error.setType(ResourceError::Type::AccessControl);
m_completionCallback(WTFMove(error));
return;
}
CORS_CHECKER_RELEASE_LOG("didComplete http_status_code=%d", m_response.httpStatusCode());
auto result = validatePreflightResponse(m_parameters.sessionID, m_parameters.originalRequest, m_response, m_parameters.storedCredentialsPolicy, m_parameters.sourceOrigin, m_networkResourceLoader.get());
if (!result) {
CORS_CHECKER_RELEASE_LOG("didComplete, AccessControl error: %s", result.error().utf8().data());
m_completionCallback(ResourceError { errorDomainWebKitInternal, 0, m_parameters.originalRequest.url(), result.error(), ResourceError::Type::AccessControl });
return;
}
m_completionCallback(ResourceError { });
}
void NetworkCORSPreflightChecker::didSendData(uint64_t totalBytesSent, uint64_t totalBytesExpectedToSend)
{
}
void NetworkCORSPreflightChecker::wasBlocked()
{
CORS_CHECKER_RELEASE_LOG("wasBlocked");
m_completionCallback(ResourceError { errorDomainWebKitInternal, 0, m_parameters.originalRequest.url(), "CORS-preflight request was blocked"_s, ResourceError::Type::AccessControl });
}
void NetworkCORSPreflightChecker::cannotShowURL()
{
CORS_CHECKER_RELEASE_LOG("cannotShowURL");
m_completionCallback(ResourceError { errorDomainWebKitInternal, 0, m_parameters.originalRequest.url(), "Preflight response was blocked"_s, ResourceError::Type::AccessControl });
}
void NetworkCORSPreflightChecker::wasBlockedByRestrictions()
{
CORS_CHECKER_RELEASE_LOG("wasBlockedByRestrictions");
m_completionCallback(ResourceError { errorDomainWebKitInternal, 0, m_parameters.originalRequest.url(), "Preflight response was blocked"_s, ResourceError::Type::AccessControl });
}
void NetworkCORSPreflightChecker::wasBlockedByDisabledFTP()
{
m_completionCallback(ftpDisabledError(m_parameters.originalRequest));
}
NetworkTransactionInformation NetworkCORSPreflightChecker::takeInformation()
{
ASSERT(m_shouldCaptureExtraNetworkLoadMetrics);
return WTFMove(m_loadInformation);
}
} // Namespace WebKit
#undef CORS_CHECKER_RELEASE_LOG
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