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/*
* This file is part of the XSL implementation.
*
* Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple, Inc. All rights reserved.
* Copyright (C) 2005, 2006 Alexey Proskuryakov <ap@webkit.org>
*
* 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 "third_party/blink/renderer/core/xml/xslt_processor.h"
#include "third_party/blink/renderer/core/dom/document_encoding_data.h"
#include "third_party/blink/renderer/core/dom/document_fragment.h"
#include "third_party/blink/renderer/core/dom/document_init.h"
#include "third_party/blink/renderer/core/dom/dom_implementation.h"
#include "third_party/blink/renderer/core/dom/ignore_opens_during_unload_count_incrementer.h"
#include "third_party/blink/renderer/core/editing/serializers/serialization.h"
#include "third_party/blink/renderer/core/frame/csp/content_security_policy.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/frame/local_frame_client.h"
#include "third_party/blink/renderer/core/frame/local_frame_view.h"
#include "third_party/blink/renderer/core/html/html_frame_owner_element.h"
#include "third_party/blink/renderer/core/xml/document_xslt.h"
#include "third_party/blink/renderer/platform/weborigin/security_origin.h"
#include "third_party/blink/renderer/platform/wtf/assertions.h"
namespace blink {
static inline void TransformTextStringToXHTMLDocumentString(String& text) {
// Modify the output so that it is a well-formed XHTML document with a <pre>
// tag enclosing the text.
text.Replace('&', "&");
text.Replace('<', "<");
text =
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" "
"\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n"
"<html xmlns=\"http://www.w3.org/1999/xhtml\">\n"
"<head><title/></head>\n"
"<body>\n"
"<pre>" +
text +
"</pre>\n"
"</body>\n"
"</html>\n";
}
XSLTProcessor::~XSLTProcessor() = default;
Document* XSLTProcessor::CreateDocumentFromSource(
const String& source_string,
const String& source_encoding,
const String& source_mime_type,
Node* source_node,
LocalFrame* frame) {
KURL url = NullURL();
Document* owner_document = &source_node->GetDocument();
if (owner_document == source_node)
url = owner_document->Url();
DocumentInit init =
DocumentInit::Create()
.WithDocumentLoader(frame ? frame->Loader().GetDocumentLoader()
: nullptr)
.WithURL(url);
String document_source = source_string;
bool force_xhtml = source_mime_type == "text/plain";
if (force_xhtml)
TransformTextStringToXHTMLDocumentString(document_source);
Document* result = nullptr;
if (frame) {
Document* old_document = frame->GetDocument();
init = init.WithOwnerDocument(old_document)
.WithSandboxFlags(old_document->GetSandboxFlags());
// Before parsing, we need to save & detach the old document and get the new
// document in place. Document::Shutdown() tears down the LocalFrameView, so
// remember whether or not there was one.
bool has_view = frame->View();
{
SubframeLoadingDisabler disabler(old_document);
IgnoreOpensDuringUnloadCountIncrementer ignore_opens_during_unload(
old_document);
frame->DetachChildren();
if (!frame->Client())
return nullptr;
old_document->Shutdown();
}
// Re-create the LocalFrameView if needed.
if (has_view)
frame->Client()->TransitionToCommittedForNewPage();
result = frame->DomWindow()->InstallNewDocument(source_mime_type, init,
force_xhtml);
if (old_document) {
DocumentXSLT::From(*result).SetTransformSourceDocument(old_document);
result->SetCookieURL(old_document->CookieURL());
auto* csp = MakeGarbageCollected<ContentSecurityPolicy>();
csp->CopyStateFrom(old_document->GetContentSecurityPolicy());
result->InitContentSecurityPolicy(csp);
}
} else {
result =
LocalDOMWindow::CreateDocument(source_mime_type, init, force_xhtml);
}
DocumentEncodingData data;
data.SetEncoding(source_encoding.IsEmpty()
? UTF8Encoding()
: WTF::TextEncoding(source_encoding));
result->SetEncodingData(data);
result->SetContent(document_source);
return result;
}
Document* XSLTProcessor::transformToDocument(Node* source_node) {
String result_mime_type;
String result_string;
String result_encoding;
if (!TransformToString(source_node, result_mime_type, result_string,
result_encoding))
return nullptr;
return CreateDocumentFromSource(result_string, result_encoding,
result_mime_type, source_node, nullptr);
}
DocumentFragment* XSLTProcessor::transformToFragment(Node* source_node,
Document* output_doc) {
String result_mime_type;
String result_string;
String result_encoding;
// If the output document is HTML, default to HTML method.
if (output_doc->IsHTMLDocument())
result_mime_type = "text/html";
if (!TransformToString(source_node, result_mime_type, result_string,
result_encoding))
return nullptr;
return CreateFragmentForTransformToFragment(result_string, result_mime_type,
*output_doc);
}
void XSLTProcessor::setParameter(const String& /*namespaceURI*/,
const String& local_name,
const String& value) {
// FIXME: namespace support?
// should make a QualifiedName here but we'd have to expose the impl
parameters_.Set(local_name, value);
}
String XSLTProcessor::getParameter(const String& /*namespaceURI*/,
const String& local_name) const {
// FIXME: namespace support?
// should make a QualifiedName here but we'd have to expose the impl
return parameters_.at(local_name);
}
void XSLTProcessor::removeParameter(const String& /*namespaceURI*/,
const String& local_name) {
// FIXME: namespace support?
parameters_.erase(local_name);
}
void XSLTProcessor::reset() {
stylesheet_.Clear();
stylesheet_root_node_.Clear();
parameters_.clear();
}
void XSLTProcessor::Trace(blink::Visitor* visitor) {
visitor->Trace(stylesheet_);
visitor->Trace(stylesheet_root_node_);
visitor->Trace(document_);
ScriptWrappable::Trace(visitor);
}
} // namespace blink
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