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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
* Copyright (C) 2006 Samuel Weinig (sam@webkit.org)
* 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.
*/
#include "third_party/blink/renderer/core/dom/dom_implementation.h"
#include "base/trace_event/trace_event.h"
#include "third_party/blink/renderer/core/css/css_style_sheet.h"
#include "third_party/blink/renderer/core/css/media_list.h"
#include "third_party/blink/renderer/core/css/style_sheet_contents.h"
#include "third_party/blink/renderer/core/dom/document_init.h"
#include "third_party/blink/renderer/core/dom/document_type.h"
#include "third_party/blink/renderer/core/dom/element.h"
#include "third_party/blink/renderer/core/dom/text.h"
#include "third_party/blink/renderer/core/dom/xml_document.h"
#include "third_party/blink/renderer/core/html/html_document.h"
#include "third_party/blink/renderer/core/html/html_head_element.h"
#include "third_party/blink/renderer/core/html/html_title_element.h"
#include "third_party/blink/renderer/core/html/plugin_document.h"
#include "third_party/blink/renderer/core/html/text_document.h"
#include "third_party/blink/renderer/core/html_names.h"
#include "third_party/blink/renderer/core/svg_names.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/weborigin/security_origin.h"
#include "third_party/blink/renderer/platform/wtf/std_lib_extras.h"
namespace blink {
namespace {
template <typename CharType>
bool IsValidDoctypeName(const base::span<const CharType>& characters) {
// https://github.com/whatwg/dom/pull/1079
// A string is a valid doctype name if it does not contain ASCII whitespace,
// U+0000 NULL, or U+003E (>).
for (unsigned i = 0; i < characters.size(); i++) {
if (!characters[i] || characters[i] == '>' ||
WTF::IsASCIISpaceWHATWG(characters[i])) {
return false;
}
}
return true;
}
} // namespace
DOMImplementation::DOMImplementation(Document& document)
: document_(document) {}
DocumentType* DOMImplementation::createDocumentType(
const AtomicString& qualified_name,
const String& public_id,
const String& system_id,
ExceptionState& exception_state) {
AtomicString prefix, local_name;
if (RuntimeEnabledFeatures::RelaxDOMValidNamesEnabled()) {
if (!WTF::VisitCharacters(qualified_name, [](auto chars) {
return IsValidDoctypeName(chars);
})) {
StringBuilder message;
message.Append("The provided doctype name ('");
message.Append(qualified_name);
message.Append("') contains an invalid character.");
exception_state.ThrowDOMException(
DOMExceptionCode::kInvalidCharacterError, message.ReleaseString());
return nullptr;
}
} else if (!Document::ParseQualifiedName(
qualified_name, prefix, local_name, exception_state,
Document::QualifiedNameParsingMode::kParsingAttribute)) {
return nullptr;
}
if (!document_->GetExecutionContext())
return nullptr;
return MakeGarbageCollected<DocumentType>(document_, qualified_name,
public_id, system_id);
}
XMLDocument* DOMImplementation::createDocument(
const AtomicString& namespace_uri,
const AtomicString& qualified_name,
DocumentType* doctype,
ExceptionState& exception_state) {
XMLDocument* doc = nullptr;
ExecutionContext* context = document_->GetExecutionContext();
DocumentInit init =
DocumentInit::Create().WithExecutionContext(context).WithAgent(
document_->GetAgent());
if (namespace_uri == svg_names::kNamespaceURI) {
doc = XMLDocument::CreateSVG(init);
} else if (namespace_uri == html_names::xhtmlNamespaceURI) {
doc = XMLDocument::CreateXHTML(init);
} else {
doc = MakeGarbageCollected<XMLDocument>(init);
}
Node* document_element = nullptr;
if (!qualified_name.empty()) {
document_element =
doc->createElementNS(namespace_uri, qualified_name, exception_state);
if (exception_state.HadException())
return nullptr;
}
if (doctype)
doc->AppendChild(doctype);
if (document_element)
doc->AppendChild(document_element);
return doc;
}
Document* DOMImplementation::createHTMLDocument(const String& title) {
TRACE_EVENT("blink", "DOMImplementation::createHTMLDocument");
DocumentInit init =
DocumentInit::Create()
.WithExecutionContext(document_->GetExecutionContext())
.WithAgent(document_->GetAgent());
auto* d = MakeGarbageCollected<HTMLDocument>(init);
d->setAllowDeclarativeShadowRoots(false);
d->open();
d->write("<!doctype html><html><head></head><body></body></html>");
if (!title.IsNull()) {
HTMLHeadElement* head_element = d->head();
DCHECK(head_element);
auto* title_element = MakeGarbageCollected<HTMLTitleElement>(*d);
head_element->AppendChild(title_element);
title_element->AppendChild(d->createTextNode(title), ASSERT_NO_EXCEPTION);
}
return d;
}
void DOMImplementation::Trace(Visitor* visitor) const {
visitor->Trace(document_);
ScriptWrappable::Trace(visitor);
}
} // namespace blink
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