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/*
* Copyright (C) 2010 Google, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "core/html/parser/HTMLViewSourceParser.h"
#include "core/dom/DOMImplementation.h"
#include "core/html/parser/HTMLParserIdioms.h"
#include "core/html/parser/HTMLParserOptions.h"
#include "core/html/parser/HTMLToken.h"
#include "core/html/parser/XSSAuditorDelegate.h"
#include <memory>
namespace blink {
HTMLViewSourceParser::HTMLViewSourceParser(HTMLViewSourceDocument& document,
const String& mimeType)
: DecodedDataDocumentParser(document),
m_tokenizer(HTMLTokenizer::create(HTMLParserOptions(&document))) {
if (mimeType != "text/html" && !DOMImplementation::isXMLMIMEType(mimeType))
m_tokenizer->setState(HTMLTokenizer::PLAINTEXTState);
}
void HTMLViewSourceParser::pumpTokenizer() {
m_xssAuditor.init(document(), 0);
while (true) {
m_sourceTracker.start(m_input.current(), m_tokenizer.get(), m_token);
if (!m_tokenizer->nextToken(m_input.current(), m_token))
return;
m_sourceTracker.end(m_input.current(), m_tokenizer.get(), m_token);
std::unique_ptr<XSSInfo> xssInfo =
m_xssAuditor.filterToken(FilterTokenRequest(
m_token, m_sourceTracker, m_tokenizer->shouldAllowCDATA()));
HTMLViewSourceDocument::SourceAnnotation annotation =
xssInfo ? HTMLViewSourceDocument::AnnotateSourceAsXSS
: HTMLViewSourceDocument::AnnotateSourceAsSafe;
document()->addSource(m_sourceTracker.sourceForToken(m_token), m_token,
annotation);
// FIXME: The tokenizer should do this work for us.
if (m_token.type() == HTMLToken::StartTag)
m_tokenizer->updateStateFor(
attemptStaticStringCreation(m_token.name(), Likely8Bit));
m_token.clear();
}
}
void HTMLViewSourceParser::append(const String& input) {
m_input.appendToEnd(input);
pumpTokenizer();
}
void HTMLViewSourceParser::finish() {
flush();
if (!m_input.haveSeenEndOfFile())
m_input.markEndOfFile();
if (!isDetached()) {
pumpTokenizer();
document()->finishedParsing();
}
}
} // namespace blink
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