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/*
* Copyright (C) 2000 Peter Kelly (pmk@post.com)
* Copyright (C) 2005-2016 Apple Inc. All rights reserved.
* Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
* Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
*
* 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.
*
*/
#pragma once
#include "LocalFrameView.h"
#include "ParserContentPolicy.h"
#include "PendingScriptClient.h"
#include "ScriptableDocumentParser.h"
#include "SegmentedString.h"
#include "XMLErrors.h"
// FIXME (286277): Stop ignoring -Wundef and -Wdeprecated-declarations in code that imports libxml and libxslt headers
IGNORE_WARNINGS_BEGIN("deprecated-declarations")
IGNORE_WARNINGS_BEGIN("undef")
#include <libxml/tree.h>
#include <libxml/xmlstring.h>
IGNORE_WARNINGS_END
IGNORE_WARNINGS_END
#include <wtf/CheckedRef.h>
#include <wtf/HashMap.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/text/AtomStringHash.h>
#include <wtf/text/CString.h>
namespace WebCore {
class ContainerNode;
class CachedResourceLoader;
class DocumentFragment;
class Element;
class PendingCallbacks;
class Text;
class XMLParserContext : public RefCounted<XMLParserContext> {
public:
static RefPtr<XMLParserContext> createMemoryParser(xmlSAXHandlerPtr, void* userData, const CString& chunk);
static Ref<XMLParserContext> createStringParser(xmlSAXHandlerPtr, void* userData);
XMLParserContext() = delete;
~XMLParserContext();
xmlParserCtxtPtr context() const { return m_context; }
private:
XMLParserContext(xmlParserCtxtPtr context)
: m_context(context)
{
}
xmlParserCtxtPtr m_context;
};
class XMLDocumentParser final : public ScriptableDocumentParser, public PendingScriptClient, public CanMakeCheckedPtr<XMLDocumentParser> {
WTF_MAKE_TZONE_ALLOCATED(XMLDocumentParser);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(XMLDocumentParser);
public:
enum class IsInFrameView : bool { No, Yes };
static Ref<XMLDocumentParser> create(Document& document, IsInFrameView isInFrameView, OptionSet<ParserContentPolicy> policy = DefaultParserContentPolicy)
{
return adoptRef(*new XMLDocumentParser(document, isInFrameView, policy));
}
static Ref<XMLDocumentParser> create(DocumentFragment& fragment, HashMap<AtomString, AtomString>&& prefixToNamespaceMap, const AtomString& defaultNamespaceURI, OptionSet<ParserContentPolicy> parserContentPolicy)
{
return adoptRef(*new XMLDocumentParser(fragment, WTFMove(prefixToNamespaceMap), defaultNamespaceURI, parserContentPolicy));
}
XMLDocumentParser() = delete;
~XMLDocumentParser();
// Exposed for callbacks:
void handleError(XMLErrors::Type, const char* message, TextPosition);
void setIsXHTMLDocument(bool isXHTML) { m_isXHTMLDocument = isXHTML; }
bool isXHTMLDocument() const { return m_isXHTMLDocument; }
static bool parseDocumentFragment(const String&, DocumentFragment&, Element* parent = nullptr, OptionSet<ParserContentPolicy> = { ParserContentPolicy::AllowScriptingContent });
// Used by XMLHttpRequest to check if the responseXML was well formed.
bool wellFormed() const final { return !m_sawError; }
static bool supportsXMLVersion(const String&);
private:
explicit XMLDocumentParser(Document&, IsInFrameView, OptionSet<ParserContentPolicy>);
XMLDocumentParser(DocumentFragment&, HashMap<AtomString, AtomString>&&, const AtomString&, OptionSet<ParserContentPolicy>);
// CheckedPtr interface
uint32_t checkedPtrCount() const final { return CanMakeCheckedPtr::checkedPtrCount(); }
uint32_t checkedPtrCountWithoutThreadCheck() const final { return CanMakeCheckedPtr::checkedPtrCountWithoutThreadCheck(); }
void incrementCheckedPtrCount() const final { CanMakeCheckedPtr::incrementCheckedPtrCount(); }
void decrementCheckedPtrCount() const final { CanMakeCheckedPtr::decrementCheckedPtrCount(); }
void insert(SegmentedString&&) final;
void append(RefPtr<StringImpl>&&) final;
void finish() final;
void stopParsing() final;
void detach() final;
TextPosition textPosition() const final;
bool shouldAssociateConsoleMessagesWithTextPosition() const final;
void notifyFinished(PendingScript&) final;
void end();
void pauseParsing();
void resumeParsing();
bool appendFragmentSource(const String&);
public:
// Callbacks from parser SAX, and other functions needed inside
// the parser implementation, but outside this class.
void error(XMLErrors::Type, const char* message, va_list args) WTF_ATTRIBUTE_PRINTF(3, 0);
void startElementNs(const xmlChar* xmlLocalName, const xmlChar* xmlPrefix, const xmlChar* xmlURI,
int numNamespaces, const xmlChar** namespaces,
int numAttributes, int numDefaulted, const xmlChar** libxmlAttributes);
void endElementNs();
void characters(std::span<const xmlChar>);
void processingInstruction(const xmlChar* target, const xmlChar* data);
void cdataBlock(std::span<const xmlChar>);
void comment(const xmlChar*);
void startDocument(const xmlChar* version, const xmlChar* encoding, int standalone);
void internalSubset(const xmlChar* name, const xmlChar* externalID, const xmlChar* systemID);
void endDocument();
private:
void initializeParserContext(const CString& chunk = CString());
void pushCurrentNode(ContainerNode*);
void popCurrentNode();
void clearCurrentNodeStack();
void insertErrorMessageBlock();
void createLeafTextNode();
bool updateLeafTextNode();
void doWrite(const String&);
void doEnd();
xmlParserCtxtPtr context() const { return m_context ? m_context->context() : nullptr; };
IsInFrameView m_isInFrameView { IsInFrameView::No };
SegmentedString m_originalSourceForTransform;
RefPtr<XMLParserContext> m_context;
std::unique_ptr<PendingCallbacks> m_pendingCallbacks;
Vector<xmlChar> m_bufferedText;
CheckedPtr<ContainerNode> m_currentNode;
Vector<CheckedPtr<ContainerNode>> m_currentNodeStack;
RefPtr<Text> m_leafTextNode;
bool m_sawError { false };
bool m_sawCSS { false };
bool m_sawXSLTransform { false };
bool m_sawFirstElement { false };
bool m_isXHTMLDocument { false };
bool m_parserPaused { false };
bool m_requestingScript { false };
bool m_finishCalled { false };
std::unique_ptr<XMLErrors> m_xmlErrors;
RefPtr<PendingScript> m_pendingScript;
TextPosition m_scriptStartPosition;
bool m_parsingFragment { false };
HashMap<AtomString, AtomString> m_prefixToNamespaceMap;
AtomString m_defaultNamespaceURI;
SegmentedString m_pendingSrc;
};
#if ENABLE(XSLT)
xmlDocPtr xmlDocPtrForString(CachedResourceLoader&, const String& source, const String& url);
#endif
xmlParserInputPtr externalEntityLoader(const char* url, const char* id, xmlParserCtxtPtr);
void initializeXMLParser();
std::optional<HashMap<String, String>> parseAttributes(CachedResourceLoader&, const String&);
} // namespace WebCore
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