/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 2000 Simon Hausmann <hausmann@kde.org>
* (C) 2000 Stefan Schimanski (1Stein@gmx.de)
* Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010 Apple Inc. All rights reserved.
*
* 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 "config.h"
#include "RenderEmbeddedObject.h"
#include "Frame.h"
#include "FrameLoaderClient.h"
#include "HTMLEmbedElement.h"
#include "HTMLIFrameElement.h"
#include "HTMLNames.h"
#include "HTMLObjectElement.h"
#include "HTMLParamElement.h"
#include "MIMETypeRegistry.h"
#include "Page.h"
#include "PluginWidget.h"
#include "RenderView.h"
#include "RenderWidgetProtector.h"
#include "Text.h"
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
#include "HTMLVideoElement.h"
#endif
#if USE(ACCELERATED_COMPOSITING)
#include "PluginWidget.h"
#endif
namespace WebCore {
using namespace HTMLNames;
RenderEmbeddedObject::RenderEmbeddedObject(Element* element)
: RenderPartObject(element)
{
view()->frameView()->setIsVisuallyNonEmpty();
}
RenderEmbeddedObject::~RenderEmbeddedObject()
{
if (frameView())
frameView()->removeWidgetToUpdate(this);
}
#if USE(ACCELERATED_COMPOSITING)
bool RenderEmbeddedObject::requiresLayer() const
{
if (RenderPartObject::requiresLayer())
return true;
return allowsAcceleratedCompositing();
}
bool RenderEmbeddedObject::allowsAcceleratedCompositing() const
{
return widget() && widget()->isPluginWidget() && static_cast<PluginWidget*>(widget())->platformLayer();
}
#endif
static bool isURLAllowed(Document* doc, const String& url)
{
if (doc->frame()->page()->frameCount() >= 200)
return false;
// We allow one level of self-reference because some sites depend on that.
// But we don't allow more than one.
KURL completeURL = doc->completeURL(url);
bool foundSelfReference = false;
for (Frame* frame = doc->frame(); frame; frame = frame->tree()->parent()) {
if (equalIgnoringFragmentIdentifier(frame->loader()->url(), completeURL)) {
if (foundSelfReference)
return false;
foundSelfReference = true;
}
}
return true;
}
typedef HashMap<String, String, CaseFoldingHash> ClassIdToTypeMap;
static ClassIdToTypeMap* createClassIdToTypeMap()
{
ClassIdToTypeMap* map = new ClassIdToTypeMap;
map->add("clsid:D27CDB6E-AE6D-11CF-96B8-444553540000", "application/x-shockwave-flash");
map->add("clsid:CFCDAA03-8BE4-11CF-B84B-0020AFBBCCFA", "audio/x-pn-realaudio-plugin");
map->add("clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B", "video/quicktime");
map->add("clsid:166B1BCA-3F9C-11CF-8075-444553540000", "application/x-director");
map->add("clsid:6BF52A52-394A-11D3-B153-00C04F79FAA6", "application/x-mplayer2");
map->add("clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95", "application/x-mplayer2");
return map;
}
static String serviceTypeForClassId(const String& classId)
{
// Return early if classId is empty (since we won't do anything below).
// Furthermore, if classId is null, calling get() below will crash.
if (classId.isEmpty())
return String();
static ClassIdToTypeMap* map = createClassIdToTypeMap();
return map->get(classId);
}
static void mapDataParamToSrc(Vector<String>* paramNames, Vector<String>* paramValues)
{
// Some plugins don't understand the "data" attribute of the OBJECT tag (i.e. Real and WMP
// require "src" attribute).
int srcIndex = -1, dataIndex = -1;
for (unsigned int i = 0; i < paramNames->size(); ++i) {
if (equalIgnoringCase((*paramNames)[i], "src"))
srcIndex = i;
else if (equalIgnoringCase((*paramNames)[i], "data"))
dataIndex = i;
}
if (srcIndex == -1 && dataIndex != -1) {
paramNames->append("src");
paramValues->append((*paramValues)[dataIndex]);
}
}
void RenderEmbeddedObject::updateWidget(bool onlyCreateNonNetscapePlugins)
{
String url;
String serviceType;
Vector<String> paramNames;
Vector<String> paramValues;
Frame* frame = frameView()->frame();
// The calls to FrameLoader::requestObject within this function can result in a plug-in being initialized.
// This can run cause arbitrary JavaScript to run and may result in this RenderObject being detached from
// the render tree and destroyed, causing a crash like <rdar://problem/6954546>. By extending our lifetime
// artifically to ensure that we remain alive for the duration of plug-in initialization.
RenderWidgetProtector protector(this);
if (node()->hasTagName(objectTag)) {
HTMLObjectElement* objectElement = static_cast<HTMLObjectElement*>(node());
objectElement->setNeedWidgetUpdate(false);
if (!objectElement->isFinishedParsingChildren())
return;
// Check for a child EMBED tag.
HTMLEmbedElement* embed = 0;
for (Node* child = objectElement->firstChild(); child; ) {
if (child->hasTagName(embedTag)) {
embed = static_cast<HTMLEmbedElement*>(child);
break;
}
if (child->hasTagName(objectTag))
child = child->nextSibling(); // Don't descend into nested OBJECT tags
else
child = child->traverseNextNode(objectElement); // Otherwise descend (EMBEDs may be inside COMMENT tags)
}
// Use the attributes from the EMBED tag instead of the OBJECT tag including WIDTH and HEIGHT.
HTMLElement* embedOrObject;
if (embed) {
embedOrObject = embed;
url = embed->url();
serviceType = embed->serviceType();
} else
embedOrObject = objectElement;
// If there was no URL or type defined in EMBED, try the OBJECT tag.
if (url.isEmpty())
url = objectElement->url();
if (serviceType.isEmpty())
serviceType = objectElement->serviceType();
HashSet<StringImpl*, CaseFoldingHash> uniqueParamNames;
// Scan the PARAM children.
// Get the URL and type from the params if we don't already have them.
// Get the attributes from the params if there is no EMBED tag.
Node* child = objectElement->firstChild();
while (child && (url.isEmpty() || serviceType.isEmpty() || !embed)) {
if (child->hasTagName(paramTag)) {
HTMLParamElement* p = static_cast<HTMLParamElement*>(child);
String name = p->name();
if (url.isEmpty() && (equalIgnoringCase(name, "src") || equalIgnoringCase(name, "movie") || equalIgnoringCase(name, "code") || equalIgnoringCase(name, "url")))
url = p->value();
if (serviceType.isEmpty() && equalIgnoringCase(name, "type")) {
serviceType = p->value();
int pos = serviceType.find(";");
if (pos != -1)
serviceType = serviceType.left(pos);
}
if (!embed && !name.isEmpty()) {
uniqueParamNames.add(name.impl());
paramNames.append(p->name());
paramValues.append(p->value());
}
}
child = child->nextSibling();
}
// When OBJECT is used for an applet via Sun's Java plugin, the CODEBASE attribute in the tag
// points to the Java plugin itself (an ActiveX component) while the actual applet CODEBASE is
// in a PARAM tag. See <http://java.sun.com/products/plugin/1.2/docs/tags.html>. This means
// we have to explicitly suppress the tag's CODEBASE attribute if there is none in a PARAM,
// else our Java plugin will misinterpret it. [4004531]
String codebase;
if (!embed && MIMETypeRegistry::isJavaAppletMIMEType(serviceType)) {
codebase = "codebase";
uniqueParamNames.add(codebase.impl()); // pretend we found it in a PARAM already
}
// Turn the attributes of either the EMBED tag or OBJECT tag into arrays, but don't override PARAM values.
NamedNodeMap* attributes = embedOrObject->attributes();
if (attributes) {
for (unsigned i = 0; i < attributes->length(); ++i) {
Attribute* it = attributes->attributeItem(i);
const AtomicString& name = it->name().localName();
if (embed || !uniqueParamNames.contains(name.impl())) {
paramNames.append(name.string());
paramValues.append(it->value().string());
}
}
}
mapDataParamToSrc(¶mNames, ¶mValues);
// If we still don't have a type, try to map from a specific CLASSID to a type.
if (serviceType.isEmpty())
serviceType = serviceTypeForClassId(objectElement->classId());
if (!isURLAllowed(document(), url))
return;
// Find out if we support fallback content.
m_hasFallbackContent = false;
for (Node* child = objectElement->firstChild(); child && !m_hasFallbackContent; child = child->nextSibling()) {
if ((!child->isTextNode() && !child->hasTagName(embedTag) && !child->hasTagName(paramTag)) // Discount <embed> and <param>
|| (child->isTextNode() && !static_cast<Text*>(child)->containsOnlyWhitespace()))
m_hasFallbackContent = true;
}
if (onlyCreateNonNetscapePlugins) {
KURL completedURL;
if (!url.isEmpty())
completedURL = frame->loader()->completeURL(url);
if (frame->loader()->client()->objectContentType(completedURL, serviceType) == ObjectContentNetscapePlugin)
return;
}
bool success = objectElement->dispatchBeforeLoadEvent(url) && frame->loader()->requestObject(this, url, objectElement->getAttribute(nameAttr), serviceType, paramNames, paramValues);
if (!success && m_hasFallbackContent)
objectElement->renderFallbackContent();
} else if (node()->hasTagName(embedTag)) {
HTMLEmbedElement* embedElement = static_cast<HTMLEmbedElement*>(node());
embedElement->setNeedWidgetUpdate(false);
url = embedElement->url();
serviceType = embedElement->serviceType();
if (url.isEmpty() && serviceType.isEmpty())
return;
if (!isURLAllowed(document(), url))
return;
// add all attributes set on the embed object
NamedNodeMap* attributes = embedElement->attributes();
if (attributes) {
for (unsigned i = 0; i < attributes->length(); ++i) {
Attribute* it = attributes->attributeItem(i);
paramNames.append(it->name().localName().string());
paramValues.append(it->value().string());
}
}
if (onlyCreateNonNetscapePlugins) {
KURL completedURL;
if (!url.isEmpty())
completedURL = frame->loader()->completeURL(url);
if (frame->loader()->client()->objectContentType(completedURL, serviceType) == ObjectContentNetscapePlugin)
return;
}
if (embedElement->dispatchBeforeLoadEvent(url))
frame->loader()->requestObject(this, url, embedElement->getAttribute(nameAttr), serviceType, paramNames, paramValues);
}
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
else if (node()->hasTagName(videoTag) || node()->hasTagName(audioTag)) {
HTMLMediaElement* mediaElement = static_cast<HTMLMediaElement*>(node());
mediaElement->setNeedWidgetUpdate(false);
if (node()->hasTagName(videoTag)) {
HTMLVideoElement* vid = static_cast<HTMLVideoElement*>(node());
String poster = vid->poster();
if (!poster.isEmpty()) {
paramNames.append("_media_element_poster_");
paramValues.append(poster);
}
}
url = mediaElement->initialURL();
if (!url.isEmpty()) {
paramNames.append("_media_element_src_");
paramValues.append(url);
}
serviceType = "application/x-media-element-proxy-plugin";
if (mediaElement->dispatchBeforeLoadEvent(url))
frame->loader()->requestObject(this, url, nullAtom, serviceType, paramNames, paramValues);
}
#endif
}
void RenderEmbeddedObject::layout()
{
ASSERT(needsLayout());
calcWidth();
calcHeight();
RenderPart::layout();
m_overflow.clear();
addShadowOverflow();
if (!widget() && frameView())
frameView()->addWidgetToUpdate(this);
setNeedsLayout(false);
}
}