166 lines
6.4 KiB
C++
166 lines
6.4 KiB
C++
/*
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* (C) 1999-2003 Lars Knoll (knoll@kde.org)
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* (C) 2002-2003 Dirk Mueller (mueller@kde.org)
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* Copyright (C) 2002-2017 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "config.h"
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#include "StyleRuleImport.h"
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#include "CSSStyleSheet.h"
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#include "CachedCSSStyleSheet.h"
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#include "CachedResourceLoader.h"
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#include "CachedResourceRequest.h"
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#include "CachedResourceRequestInitiators.h"
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#include "Document.h"
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#include "MediaList.h"
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#include "MediaQueryParser.h"
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#include "SecurityOrigin.h"
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#include "StyleSheetContents.h"
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#include <wtf/StdLibExtras.h>
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namespace WebCore {
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Ref<StyleRuleImport> StyleRuleImport::create(const String& href, Ref<MediaQuerySet>&& media)
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{
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return adoptRef(*new StyleRuleImport(href, WTFMove(media)));
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}
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StyleRuleImport::StyleRuleImport(const String& href, Ref<MediaQuerySet>&& media)
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: StyleRuleBase(StyleRuleType::Import)
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, m_styleSheetClient(this)
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, m_strHref(href)
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, m_mediaQueries(WTFMove(media))
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{
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if (!m_mediaQueries)
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m_mediaQueries = MediaQuerySet::create(String(), MediaQueryParserContext());
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}
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StyleRuleImport::~StyleRuleImport()
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{
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if (m_styleSheet)
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m_styleSheet->clearOwnerRule();
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if (m_cachedSheet)
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m_cachedSheet->removeClient(m_styleSheetClient);
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}
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void StyleRuleImport::setCSSStyleSheet(const String& href, const URL& baseURL, const String& charset, const CachedCSSStyleSheet* cachedStyleSheet)
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{
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if (m_styleSheet)
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m_styleSheet->clearOwnerRule();
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CSSParserContext context = m_parentStyleSheet ? m_parentStyleSheet->parserContext() : HTMLStandardMode;
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context.charset = charset;
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if (!baseURL.isNull())
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context.baseURL = baseURL;
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Document* document = m_parentStyleSheet ? m_parentStyleSheet->singleOwnerDocument() : nullptr;
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m_styleSheet = StyleSheetContents::create(this, href, context);
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if (m_parentStyleSheet->isContentOpaque() || !cachedStyleSheet->isCORSSameOrigin())
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m_styleSheet->setAsOpaque();
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m_styleSheet->parseAuthorStyleSheet(cachedStyleSheet, document ? &document->securityOrigin() : nullptr);
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m_loading = false;
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if (m_parentStyleSheet) {
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m_parentStyleSheet->notifyLoadedSheet(cachedStyleSheet);
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m_parentStyleSheet->checkLoaded();
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}
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}
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bool StyleRuleImport::isLoading() const
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{
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return m_loading || (m_styleSheet && m_styleSheet->isLoading());
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}
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void StyleRuleImport::requestStyleSheet()
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{
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if (!m_parentStyleSheet)
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return;
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auto* document = m_parentStyleSheet->singleOwnerDocument();
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if (!document)
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return;
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auto* page = document->page();
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if (!page)
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return;
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URL absURL;
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if (!m_parentStyleSheet->baseURL().isNull())
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// use parent styleheet's URL as the base URL
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absURL = URL(m_parentStyleSheet->baseURL(), m_strHref);
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else
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absURL = document->completeURL(m_strHref);
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// Check for a cycle in our import chain. If we encounter a stylesheet
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// in our parent chain with the same URL, then just bail.
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StyleSheetContents* rootSheet = m_parentStyleSheet;
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for (StyleSheetContents* sheet = m_parentStyleSheet; sheet; sheet = sheet->parentStyleSheet()) {
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if (equalIgnoringFragmentIdentifier(absURL, sheet->baseURL())
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|| equalIgnoringFragmentIdentifier(absURL, document->completeURL(sheet->originalURL())))
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return;
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rootSheet = sheet;
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}
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// FIXME: Skip Content Security Policy check when stylesheet is in a user agent shadow tree.
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// See <https://bugs.webkit.org/show_bug.cgi?id=146663>.
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CachedResourceRequest request(absURL, CachedResourceLoader::defaultCachedResourceOptions(), std::nullopt, String(m_parentStyleSheet->charset()));
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request.setInitiator(cachedResourceRequestInitiators().css);
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if (m_cachedSheet)
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m_cachedSheet->removeClient(m_styleSheetClient);
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if (m_parentStyleSheet->isUserStyleSheet()) {
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ResourceLoaderOptions options {
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SendCallbackPolicy::DoNotSendCallbacks,
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ContentSniffingPolicy::SniffContent,
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DataBufferingPolicy::BufferData,
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StoredCredentialsPolicy::Use,
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ClientCredentialPolicy::MayAskClientForCredentials,
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FetchOptions::Credentials::Include,
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SecurityCheckPolicy::SkipSecurityCheck,
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FetchOptions::Mode::NoCors,
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CertificateInfoPolicy::DoNotIncludeCertificateInfo,
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ContentSecurityPolicyImposition::SkipPolicyCheck,
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DefersLoadingPolicy::AllowDefersLoading,
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CachingPolicy::AllowCaching
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};
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options.loadedFromOpaqueSource = m_parentStyleSheet->isContentOpaque() ? LoadedFromOpaqueSource::Yes : LoadedFromOpaqueSource::No;
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request.setOptions(WTFMove(options));
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m_cachedSheet = document->cachedResourceLoader().requestUserCSSStyleSheet(*page, WTFMove(request));
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} else {
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auto options = request.options();
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options.loadedFromOpaqueSource = m_parentStyleSheet->isContentOpaque() ? LoadedFromOpaqueSource::Yes : LoadedFromOpaqueSource::No;
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request.setOptions(WTFMove(options));
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m_cachedSheet = document->cachedResourceLoader().requestCSSStyleSheet(WTFMove(request)).value_or(nullptr);
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}
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if (m_cachedSheet) {
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// if the import rule is issued dynamically, the sheet may be
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// removed from the pending sheet count, so let the doc know
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// the sheet being imported is pending.
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if (m_parentStyleSheet && m_parentStyleSheet->loadCompleted() && rootSheet == m_parentStyleSheet)
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m_parentStyleSheet->startLoadingDynamicSheet();
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m_loading = true;
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m_cachedSheet->addClient(m_styleSheetClient);
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} else if (m_parentStyleSheet) {
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m_parentStyleSheet->setLoadErrorOccured();
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m_parentStyleSheet->checkLoaded();
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}
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}
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} // namespace WebCore
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