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/*
* Copyright (C) 2010 Google Inc. All rights reserved.
* Copyright (C) 2015 Roopesh Chander (roop@roopc.net)
* Copyright (C) 2015-2021 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER 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 "PingLoader.h"
#include "CachedResourceLoader.h"
#include "CachedResourceRequest.h"
#include "ContentRuleListResults.h"
#include "ContentSecurityPolicy.h"
#include "Document.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.h"
#include "HTTPHeaderValues.h"
#include "InspectorInstrumentation.h"
#include "LoaderStrategy.h"
#include "NetworkLoadMetrics.h"
#include "Page.h"
#include "PlatformStrategies.h"
#include "ProgressTracker.h"
#include "ResourceError.h"
#include "ResourceHandle.h"
#include "ResourceLoadInfo.h"
#include "ResourceRequest.h"
#include "ResourceResponse.h"
#include "SecurityOrigin.h"
#include "SecurityPolicy.h"
#include "UserContentController.h"
#include <wtf/text/CString.h>
namespace WebCore {
#if ENABLE(CONTENT_EXTENSIONS)
// Returns true if we should block the load.
static bool processContentRuleListsForLoad(const Frame& frame, ResourceRequest& request, OptionSet<ContentExtensions::ResourceType> resourceType)
{
auto* documentLoader = frame.loader().documentLoader();
if (!documentLoader)
return false;
auto* page = frame.page();
if (!page)
return false;
auto results = page->userContentProvider().processContentRuleListsForLoad(*page, request.url(), resourceType, *documentLoader);
bool result = results.summary.blockedLoad;
ContentExtensions::applyResultsToRequest(WTFMove(results), page, request);
return result;
}
#endif
void PingLoader::loadImage(Frame& frame, const URL& url)
{
ASSERT(frame.document());
auto& document = *frame.document();
if (!document.securityOrigin().canDisplay(url)) {
FrameLoader::reportLocalLoadFailed(&frame, url.string());
return;
}
if (!portAllowed(url)) {
FrameLoader::reportBlockedLoadFailed(frame, url);
return;
}
ResourceRequest request(url);
#if ENABLE(CONTENT_EXTENSIONS)
if (processContentRuleListsForLoad(frame, request, ContentExtensions::ResourceType::Image))
return;
#endif
document.contentSecurityPolicy()->upgradeInsecureRequestIfNeeded(request, ContentSecurityPolicy::InsecureRequestType::Load);
request.setHTTPHeaderField(HTTPHeaderName::CacheControl, HTTPHeaderValues::maxAge0());
HTTPHeaderMap originalRequestHeader = request.httpHeaderFields();
String referrer = SecurityPolicy::generateReferrerHeader(document.referrerPolicy(), request.url(), frame.loader().outgoingReferrer());
if (!referrer.isEmpty())
request.setHTTPReferrer(referrer);
frame.loader().updateRequestAndAddExtraFields(request, IsMainResource::No);
startPingLoad(frame, request, WTFMove(originalRequestHeader), ShouldFollowRedirects::Yes, ContentSecurityPolicyImposition::DoPolicyCheck, ReferrerPolicy::EmptyString);
}
// http://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#hyperlink-auditing
void PingLoader::sendPing(Frame& frame, const URL& pingURL, const URL& destinationURL)
{
ASSERT(frame.document());
if (!pingURL.protocolIsInHTTPFamily())
return;
ResourceRequest request(pingURL);
request.setRequester(ResourceRequest::Requester::Ping);
#if ENABLE(CONTENT_EXTENSIONS)
if (processContentRuleListsForLoad(frame, request, ContentExtensions::ResourceType::Ping))
return;
#endif
auto& document = *frame.document();
document.contentSecurityPolicy()->upgradeInsecureRequestIfNeeded(request, ContentSecurityPolicy::InsecureRequestType::Load);
request.setHTTPMethod("POST"_s);
request.setHTTPContentType("text/ping"_s);
request.setHTTPBody(FormData::create("PING"));
request.setHTTPHeaderField(HTTPHeaderName::CacheControl, HTTPHeaderValues::maxAge0());
HTTPHeaderMap originalRequestHeader = request.httpHeaderFields();
auto& sourceOrigin = document.securityOrigin();
FrameLoader::addHTTPOriginIfNeeded(request, SecurityPolicy::generateOriginHeader(document.referrerPolicy(), request.url(), sourceOrigin));
frame.loader().updateRequestAndAddExtraFields(request, IsMainResource::No);
request.setHTTPHeaderField(HTTPHeaderName::PingTo, destinationURL.string());
if (!SecurityPolicy::shouldHideReferrer(pingURL, frame.loader().outgoingReferrer()))
request.setHTTPHeaderField(HTTPHeaderName::PingFrom, document.url().string());
startPingLoad(frame, request, WTFMove(originalRequestHeader), ShouldFollowRedirects::Yes, ContentSecurityPolicyImposition::DoPolicyCheck, ReferrerPolicy::NoReferrer);
}
void PingLoader::sendViolationReport(Frame& frame, const URL& reportURL, Ref<FormData>&& report, ViolationReportType reportType)
{
ASSERT(frame.document());
ResourceRequest request(reportURL);
#if ENABLE(CONTENT_EXTENSIONS)
if (processContentRuleListsForLoad(frame, request, ContentExtensions::ResourceType::CSPReport))
return;
#endif
auto& document = *frame.document();
document.contentSecurityPolicy()->upgradeInsecureRequestIfNeeded(request, ContentSecurityPolicy::InsecureRequestType::Load);
request.setHTTPMethod("POST"_s);
request.setHTTPBody(WTFMove(report));
switch (reportType) {
case ViolationReportType::ContentSecurityPolicy:
request.setHTTPContentType("application/csp-report"_s);
break;
case ViolationReportType::StandardReportingAPIViolation:
request.setHTTPContentType("application/reports+json"_s);
break;
}
bool removeCookies = true;
if (document.securityOrigin().isSameSchemeHostPort(SecurityOrigin::create(reportURL).get()))
removeCookies = false;
if (removeCookies)
request.setAllowCookies(false);
HTTPHeaderMap originalRequestHeader = request.httpHeaderFields();
if (reportType != ViolationReportType::StandardReportingAPIViolation)
frame.loader().updateRequestAndAddExtraFields(request, IsMainResource::No);
String referrer = SecurityPolicy::generateReferrerHeader(document.referrerPolicy(), reportURL, frame.loader().outgoingReferrer());
if (!referrer.isEmpty())
request.setHTTPReferrer(referrer);
startPingLoad(frame, request, WTFMove(originalRequestHeader), ShouldFollowRedirects::No, ContentSecurityPolicyImposition::SkipPolicyCheck, ReferrerPolicy::EmptyString, reportType);
}
void PingLoader::startPingLoad(Frame& frame, ResourceRequest& request, HTTPHeaderMap&& originalRequestHeaders, ShouldFollowRedirects shouldFollowRedirects, ContentSecurityPolicyImposition policyCheck, ReferrerPolicy referrerPolicy, std::optional<ViolationReportType> violationReportType)
{
auto identifier = ResourceLoaderIdentifier::generate();
// FIXME: Why activeDocumentLoader? I would have expected documentLoader().
// It seems like the PingLoader should be associated with the current
// Document in the Frame, but the activeDocumentLoader will be associated
// with the provisional DocumentLoader if there is a provisional
// DocumentLoader.
bool shouldUseCredentialStorage = frame.loader().client().shouldUseCredentialStorage(frame.loader().activeDocumentLoader(), identifier);
ResourceLoaderOptions options;
options.credentials = shouldUseCredentialStorage ? FetchOptions::Credentials::Include : FetchOptions::Credentials::Omit;
options.redirect = shouldFollowRedirects == ShouldFollowRedirects::Yes ? FetchOptions::Redirect::Follow : FetchOptions::Redirect::Error;
options.keepAlive = true;
options.contentSecurityPolicyImposition = policyCheck;
options.referrerPolicy = referrerPolicy;
options.sendLoadCallbacks = SendCallbackPolicy::SendCallbacks;
options.cache = FetchOptions::Cache::NoCache;
// https://www.w3.org/TR/reporting/#try-delivery
if (violationReportType == ViolationReportType::StandardReportingAPIViolation) {
options.credentials = FetchOptions::Credentials::SameOrigin;
options.mode = FetchOptions::Mode::Cors;
options.serviceWorkersMode = ServiceWorkersMode::None;
options.destination = FetchOptions::Destination::Report;
}
// FIXME: Deprecate the ping load code path.
if (platformStrategies()->loaderStrategy()->usePingLoad()) {
InspectorInstrumentation::willSendRequestOfType(&frame, identifier, frame.loader().activeDocumentLoader(), request, InspectorInstrumentation::LoadType::Ping);
platformStrategies()->loaderStrategy()->startPingLoad(frame, request, WTFMove(originalRequestHeaders), options, policyCheck, [protectedFrame = Ref { frame }, identifier] (const ResourceError& error, const ResourceResponse& response) {
if (!response.isNull())
InspectorInstrumentation::didReceiveResourceResponse(protectedFrame, identifier, protectedFrame->loader().activeDocumentLoader(), response, nullptr);
if (!error.isNull()) {
InspectorInstrumentation::didFailLoading(protectedFrame.ptr(), protectedFrame->loader().activeDocumentLoader(), identifier, error);
return;
}
InspectorInstrumentation::didFinishLoading(protectedFrame.ptr(), protectedFrame->loader().activeDocumentLoader(), identifier, { }, nullptr);
});
return;
}
CachedResourceRequest cachedResourceRequest { ResourceRequest { request }, options };
frame.document()->cachedResourceLoader().requestPingResource(WTFMove(cachedResourceRequest));
}
// // https://html.spec.whatwg.org/multipage/origin.html#sanitize-url-report
String PingLoader::sanitizeURLForReport(const URL& url)
{
URL sanitizedURL = url;
sanitizedURL.removeCredentials();
sanitizedURL.removeFragmentIdentifier();
return sanitizedURL.string();
}
} // namespace WebCore