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/*
* Copyright (C) 2006-2022 Apple 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,
* 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 "config.h"
#include "PluginDocument.h"
#include "DocumentLoader.h"
#include "FrameLoader.h"
#include "HTMLBodyElement.h"
#include "HTMLEmbedElement.h"
#include "HTMLHeadElement.h"
#include "HTMLHtmlElement.h"
#include "HTMLNames.h"
#include "HTMLStyleElement.h"
#include "LocalFrame.h"
#include "LocalFrameLoaderClient.h"
#include "LocalFrameView.h"
#include "Logging.h"
#include "PluginViewBase.h"
#include "RawDataDocumentParser.h"
#include "RenderEmbeddedObject.h"
#include "StyleSheetContents.h"
#include <wtf/TZoneMallocInlines.h>
#include <wtf/text/MakeString.h>
#include <wtf/text/TextStream.h>
namespace WebCore {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(PluginDocument);
using namespace HTMLNames;
// FIXME: Share more code with MediaDocumentParser.
class PluginDocumentParser final : public RawDataDocumentParser {
public:
static Ref<PluginDocumentParser> create(PluginDocument& document)
{
return adoptRef(*new PluginDocumentParser(document));
}
private:
PluginDocumentParser(Document& document)
: RawDataDocumentParser(document)
{
}
void appendBytes(DocumentWriter&, std::span<const uint8_t>) final;
void createDocumentStructure();
static Ref<HTMLStyleElement> createStyleElement(Document&);
WeakPtr<HTMLEmbedElement, WeakPtrImplWithEventTargetData> m_embedElement;
};
Ref<HTMLStyleElement> PluginDocumentParser::createStyleElement(Document& document)
{
auto styleElement = HTMLStyleElement::create(document);
constexpr auto styleSheetContents = R"CONTENTS(
html, body, embed { width: 100%; height: 100%; }
body { margin: 0; overflow: hidden; }
html.plugin-fits-content body { overflow: revert; }
)CONTENTS"_s;
#if PLATFORM(IOS_FAMILY)
constexpr auto bodyBackgroundColorStyle = "body { background-color: rgb(217, 224, 233) }"_s;
#else
constexpr auto bodyBackgroundColorStyle = "body { background-color: rgb(38, 38, 38) }"_s;
#endif
styleElement->setTextContent(makeString(styleSheetContents, bodyBackgroundColorStyle));
return styleElement;
}
void PluginDocumentParser::createDocumentStructure()
{
auto& document = downcast<PluginDocument>(*this->document());
LOG_WITH_STREAM(Plugins, stream << "PluginDocumentParser::createDocumentStructure() for document " << document);
auto rootElement = HTMLHtmlElement::create(document);
document.appendChild(rootElement);
auto headElement = HTMLHeadElement::create(document);
auto styleElement = createStyleElement(document);
headElement->appendChild(styleElement);
rootElement->appendChild(headElement);
if (document.frame())
document.frame()->injectUserScripts(UserScriptInjectionTime::DocumentStart);
auto body = HTMLBodyElement::create(document);
rootElement->appendChild(body);
auto embedElement = HTMLEmbedElement::create(document);
m_embedElement = embedElement.get();
embedElement->setAttributeWithoutSynchronization(nameAttr, "plugin"_s);
embedElement->setAttributeWithoutSynchronization(srcAttr, AtomString { document.url().string() });
ASSERT(document.loader());
if (RefPtr loader = document.loader())
m_embedElement->setAttributeWithoutSynchronization(typeAttr, AtomString { loader->writer().mimeType() });
document.setPluginElement(*m_embedElement);
body->appendChild(embedElement);
document.setHasVisuallyNonEmptyCustomContent();
}
void PluginDocumentParser::appendBytes(DocumentWriter&, std::span<const uint8_t>)
{
if (m_embedElement)
return;
createDocumentStructure();
RefPtr frame = document()->frame();
if (!frame)
return;
document()->updateLayout();
// Below we assume that renderer->widget() to have been created by
// document()->updateLayout(). However, in some cases, updateLayout() will
// recurse too many times and delay its post-layout tasks (such as creating
// the widget). Here we kick off the pending post-layout tasks so that we
// can synchronously redirect data to the plugin.
frame->view()->flushAnyPendingPostLayoutTasks();
if (auto renderer = m_embedElement->renderWidget()) {
if (RefPtr widget = renderer->widget()) {
frame->loader().client().redirectDataToPlugin(*widget);
// In a plugin document, the main resource is the plugin. If we have a null widget, that means
// the loading of the plugin was cancelled, which gives us a null mainResourceLoader(), so we
// need to have this call in a null check of the widget or of mainResourceLoader().
if (auto loader = frame->loader().activeDocumentLoader())
loader->setMainResourceDataBufferingPolicy(DataBufferingPolicy::DoNotBufferData);
}
}
}
PluginDocument::PluginDocument(LocalFrame& frame, const URL& url)
: HTMLDocument(&frame, frame.settings(), url, { }, { DocumentClass::Plugin })
{
setCompatibilityMode(DocumentCompatibilityMode::NoQuirksMode);
lockCompatibilityMode();
}
PluginDocument::~PluginDocument() = default;
Ref<DocumentParser> PluginDocument::createParser()
{
return PluginDocumentParser::create(*this);
}
PluginViewBase* PluginDocument::pluginWidget()
{
if (!m_pluginElement)
return nullptr;
auto* renderer = dynamicDowncast<RenderEmbeddedObject>(m_pluginElement->renderer());
if (!renderer)
return nullptr;
return dynamicDowncast<PluginViewBase>(renderer->widget());
}
void PluginDocument::setPluginElement(HTMLPlugInElement& element)
{
m_pluginElement = &element;
}
void PluginDocument::detachFromPluginElement()
{
// Release the plugin Element so that we don't have a circular reference.
m_pluginElement = nullptr;
}
void PluginDocument::releaseMemory()
{
if (RefPtr pluginView = pluginWidget())
pluginView->releaseMemory();
}
}
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