| /* |
| * Copyright (C) 2000 Peter Kelly (pmk@post.com) |
| * Copyright (C) 2006-2018 Apple Inc. All rights reserved. |
| * Copyright (C) 2013 Samsung Electronics. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| #include "ProcessingInstruction.h" |
| |
| #include "CSSStyleSheet.h" |
| #include "CachedCSSStyleSheet.h" |
| #include "CachedResourceLoader.h" |
| #include "CachedResourceRequest.h" |
| #include "CachedXSLStyleSheet.h" |
| #include "Document.h" |
| #include "Frame.h" |
| #include "FrameLoader.h" |
| #include "MediaList.h" |
| #include "MediaQueryParser.h" |
| #include "StyleScope.h" |
| #include "StyleSheetContents.h" |
| #include "XMLDocumentParser.h" |
| #include "XSLStyleSheet.h" |
| #include <wtf/IsoMallocInlines.h> |
| #include <wtf/SetForScope.h> |
| |
| namespace WebCore { |
| |
| WTF_MAKE_ISO_ALLOCATED_IMPL(ProcessingInstruction); |
| |
| inline ProcessingInstruction::ProcessingInstruction(Document& document, const String& target, const String& data) |
| : CharacterData(document, data, CreateOther) |
| , m_target(target) |
| { |
| } |
| |
| Ref<ProcessingInstruction> ProcessingInstruction::create(Document& document, const String& target, const String& data) |
| { |
| return adoptRef(*new ProcessingInstruction(document, target, data)); |
| } |
| |
| ProcessingInstruction::~ProcessingInstruction() |
| { |
| if (m_sheet) |
| m_sheet->clearOwnerNode(); |
| |
| if (m_cachedSheet) |
| m_cachedSheet->removeClient(*this); |
| |
| if (isConnected()) |
| document().styleScope().removeStyleSheetCandidateNode(*this); |
| } |
| |
| String ProcessingInstruction::nodeName() const |
| { |
| return m_target; |
| } |
| |
| Node::NodeType ProcessingInstruction::nodeType() const |
| { |
| return PROCESSING_INSTRUCTION_NODE; |
| } |
| |
| Ref<Node> ProcessingInstruction::cloneNodeInternal(Document& targetDocument, CloningOperation) |
| { |
| // FIXME: Is it a problem that this does not copy m_localHref? |
| // What about other data members? |
| return create(targetDocument, m_target, data()); |
| } |
| |
| void ProcessingInstruction::checkStyleSheet() |
| { |
| // Prevent recursive loading of stylesheet. |
| if (m_isHandlingBeforeLoad) |
| return; |
| |
| if (m_target == "xml-stylesheet" && document().frame() && parentNode() == &document()) { |
| // see http://www.w3.org/TR/xml-stylesheet/ |
| // ### support stylesheet included in a fragment of this (or another) document |
| // ### make sure this gets called when adding from javascript |
| auto attributes = parseAttributes(data()); |
| if (!attributes) |
| return; |
| String type = attributes->get("type"); |
| |
| m_isCSS = type.isEmpty() || type == "text/css"; |
| #if ENABLE(XSLT) |
| m_isXSL = type == "text/xml" || type == "text/xsl" || type == "application/xml" || type == "application/xhtml+xml" || type == "application/rss+xml" || type == "application/atom+xml"; |
| if (!m_isCSS && !m_isXSL) |
| #else |
| if (!m_isCSS) |
| #endif |
| return; |
| |
| String href = attributes->get("href"); |
| String alternate = attributes->get("alternate"); |
| m_alternate = alternate == "yes"; |
| m_title = attributes->get("title"); |
| m_media = attributes->get("media"); |
| |
| if (m_alternate && m_title.isEmpty()) |
| return; |
| |
| if (href.length() > 1 && href[0] == '#') { |
| m_localHref = href.substring(1); |
| #if ENABLE(XSLT) |
| // We need to make a synthetic XSLStyleSheet that is embedded. It needs to be able |
| // to kick off import/include loads that can hang off some parent sheet. |
| if (m_isXSL) { |
| URL finalURL(ParsedURLString, m_localHref); |
| m_sheet = XSLStyleSheet::createEmbedded(this, finalURL); |
| m_loading = false; |
| document().scheduleToApplyXSLTransforms(); |
| } |
| #endif |
| } else { |
| if (m_cachedSheet) { |
| m_cachedSheet->removeClient(*this); |
| m_cachedSheet = nullptr; |
| } |
| |
| if (m_loading) { |
| m_loading = false; |
| document().styleScope().removePendingSheet(*this); |
| } |
| |
| Ref<Document> originalDocument = document(); |
| |
| String url = document().completeURL(href).string(); |
| |
| { |
| SetForScope<bool> change(m_isHandlingBeforeLoad, true); |
| if (!dispatchBeforeLoadEvent(url)) |
| return; |
| } |
| |
| bool didEventListenerDisconnectThisElement = !isConnected() || &document() != originalDocument.ptr(); |
| if (didEventListenerDisconnectThisElement) |
| return; |
| |
| m_loading = true; |
| document().styleScope().addPendingSheet(*this); |
| |
| ASSERT_WITH_SECURITY_IMPLICATION(!m_cachedSheet); |
| |
| #if ENABLE(XSLT) |
| if (m_isXSL) { |
| auto options = CachedResourceLoader::defaultCachedResourceOptions(); |
| options.mode = FetchOptions::Mode::SameOrigin; |
| m_cachedSheet = document().cachedResourceLoader().requestXSLStyleSheet({ResourceRequest(document().completeURL(href)), options}).value_or(nullptr); |
| } else |
| #endif |
| { |
| String charset = attributes->get("charset"); |
| CachedResourceRequest request(document().completeURL(href), CachedResourceLoader::defaultCachedResourceOptions(), std::nullopt, charset.isEmpty() ? document().charset() : WTFMove(charset)); |
| |
| m_cachedSheet = document().cachedResourceLoader().requestCSSStyleSheet(WTFMove(request)).value_or(nullptr); |
| } |
| if (m_cachedSheet) |
| m_cachedSheet->addClient(*this); |
| else { |
| // The request may have been denied if (for example) the stylesheet is local and the document is remote. |
| m_loading = false; |
| document().styleScope().removePendingSheet(*this); |
| #if ENABLE(XSLT) |
| if (m_isXSL) |
| document().scheduleToApplyXSLTransforms(); |
| #endif |
| } |
| } |
| } |
| } |
| |
| bool ProcessingInstruction::isLoading() const |
| { |
| if (m_loading) |
| return true; |
| if (!m_sheet) |
| return false; |
| return m_sheet->isLoading(); |
| } |
| |
| bool ProcessingInstruction::sheetLoaded() |
| { |
| if (!isLoading()) { |
| if (document().styleScope().hasPendingSheet(*this)) |
| document().styleScope().removePendingSheet(*this); |
| #if ENABLE(XSLT) |
| if (m_isXSL) |
| document().scheduleToApplyXSLTransforms(); |
| #endif |
| return true; |
| } |
| return false; |
| } |
| |
| void ProcessingInstruction::setCSSStyleSheet(const String& href, const URL& baseURL, const String& charset, const CachedCSSStyleSheet* sheet) |
| { |
| if (!isConnected()) { |
| ASSERT(!m_sheet); |
| return; |
| } |
| |
| ASSERT(m_isCSS); |
| CSSParserContext parserContext(document(), baseURL, charset); |
| |
| auto cssSheet = CSSStyleSheet::create(StyleSheetContents::create(href, parserContext), *this); |
| cssSheet.get().setDisabled(m_alternate); |
| cssSheet.get().setTitle(m_title); |
| cssSheet.get().setMediaQueries(MediaQuerySet::create(m_media, MediaQueryParserContext(document()))); |
| |
| m_sheet = WTFMove(cssSheet); |
| |
| // We don't need the cross-origin security check here because we are |
| // getting the sheet text in "strict" mode. This enforces a valid CSS MIME |
| // type. |
| Ref<Document> protect(document()); |
| parseStyleSheet(sheet->sheetText()); |
| } |
| |
| #if ENABLE(XSLT) |
| void ProcessingInstruction::setXSLStyleSheet(const String& href, const URL& baseURL, const String& sheet) |
| { |
| ASSERT(m_isXSL); |
| m_sheet = XSLStyleSheet::create(this, href, baseURL); |
| Ref<Document> protect(document()); |
| parseStyleSheet(sheet); |
| } |
| #endif |
| |
| void ProcessingInstruction::parseStyleSheet(const String& sheet) |
| { |
| if (m_isCSS) |
| downcast<CSSStyleSheet>(*m_sheet).contents().parseString(sheet); |
| #if ENABLE(XSLT) |
| else if (m_isXSL) |
| downcast<XSLStyleSheet>(*m_sheet).parseString(sheet); |
| #endif |
| |
| if (m_cachedSheet) |
| m_cachedSheet->removeClient(*this); |
| m_cachedSheet = nullptr; |
| |
| m_loading = false; |
| |
| if (m_isCSS) |
| downcast<CSSStyleSheet>(*m_sheet).contents().checkLoaded(); |
| #if ENABLE(XSLT) |
| else if (m_isXSL) |
| downcast<XSLStyleSheet>(*m_sheet).checkLoaded(); |
| #endif |
| } |
| |
| void ProcessingInstruction::addSubresourceAttributeURLs(ListHashSet<URL>& urls) const |
| { |
| if (!sheet()) |
| return; |
| |
| addSubresourceURL(urls, sheet()->baseURL()); |
| } |
| |
| Node::InsertedIntoAncestorResult ProcessingInstruction::insertedIntoAncestor(InsertionType insertionType, ContainerNode& parentOfInsertedTree) |
| { |
| CharacterData::insertedIntoAncestor(insertionType, parentOfInsertedTree); |
| if (!insertionType.connectedToDocument) |
| return InsertedIntoAncestorResult::Done; |
| document().styleScope().addStyleSheetCandidateNode(*this, m_createdByParser); |
| return InsertedIntoAncestorResult::NeedsPostInsertionCallback; |
| } |
| |
| void ProcessingInstruction::didFinishInsertingNode() |
| { |
| checkStyleSheet(); |
| } |
| |
| void ProcessingInstruction::removedFromAncestor(RemovalType removalType, ContainerNode& oldParentOfRemovedTree) |
| { |
| CharacterData::removedFromAncestor(removalType, oldParentOfRemovedTree); |
| if (!removalType.disconnectedFromDocument) |
| return; |
| |
| document().styleScope().removeStyleSheetCandidateNode(*this); |
| |
| if (m_sheet) { |
| ASSERT(m_sheet->ownerNode() == this); |
| m_sheet->clearOwnerNode(); |
| m_sheet = nullptr; |
| } |
| |
| if (m_loading) { |
| m_loading = false; |
| document().styleScope().removePendingSheet(*this); |
| } |
| |
| document().styleScope().didChangeActiveStyleSheetCandidates(); |
| } |
| |
| void ProcessingInstruction::finishParsingChildren() |
| { |
| m_createdByParser = false; |
| CharacterData::finishParsingChildren(); |
| } |
| |
| } // namespace |
