зеркало из https://github.com/mozilla/gecko-dev.git
3574 строки
118 KiB
C++
3574 строки
118 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* A base class implementing nsIObjectLoadingContent for use by
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* various content nodes that want to provide plugin/document/image
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* loading functionality (eg <embed>, <object>, etc).
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*/
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// Interface headers
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#include "imgLoader.h"
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#include "nsIClassOfService.h"
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#include "nsIConsoleService.h"
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#include "nsIContent.h"
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#include "nsIContentInlines.h"
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#include "nsIDocShell.h"
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#include "mozilla/dom/BindContext.h"
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#include "mozilla/dom/Document.h"
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#include "nsIExternalProtocolHandler.h"
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#include "nsIInterfaceRequestorUtils.h"
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#include "nsIObjectFrame.h"
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#include "nsIOService.h"
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#include "nsIPermissionManager.h"
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#include "nsPluginHost.h"
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#include "nsPluginInstanceOwner.h"
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#include "nsJSNPRuntime.h"
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#include "nsINestedURI.h"
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#include "nsScriptSecurityManager.h"
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#include "nsIScriptSecurityManager.h"
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#include "nsIStreamConverterService.h"
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#include "nsIURILoader.h"
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#include "nsIURL.h"
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#include "nsIWebNavigation.h"
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#include "nsIWebNavigationInfo.h"
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#include "nsIScriptChannel.h"
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#include "nsIBlocklistService.h"
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#include "nsIAsyncVerifyRedirectCallback.h"
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#include "nsIAppShell.h"
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#include "nsIXULRuntime.h"
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#include "nsIScriptError.h"
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#include "nsError.h"
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// Util headers
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#include "prenv.h"
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#include "mozilla/Logging.h"
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#include "nsCURILoader.h"
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#include "nsContentPolicyUtils.h"
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#include "nsContentUtils.h"
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#include "nsDocShellCID.h"
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#include "nsGkAtoms.h"
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#include "nsThreadUtils.h"
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#include "nsNetUtil.h"
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#include "nsMimeTypes.h"
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#include "nsStyleUtil.h"
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#include "nsUnicharUtils.h"
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#include "mozilla/Preferences.h"
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#include "nsSandboxFlags.h"
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// Concrete classes
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#include "nsFrameLoader.h"
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#include "nsObjectLoadingContent.h"
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#include "mozAutoDocUpdate.h"
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#include "nsIContentSecurityPolicy.h"
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#include "GeckoProfiler.h"
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#include "nsPluginFrame.h"
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#include "nsWrapperCacheInlines.h"
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#include "nsDOMJSUtils.h"
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#include "nsWidgetsCID.h"
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#include "nsContentCID.h"
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#include "mozilla/BasicEvents.h"
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#include "mozilla/Components.h"
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#include "mozilla/dom/BindingUtils.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/dom/Event.h"
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#include "mozilla/dom/ScriptSettings.h"
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#include "mozilla/dom/PluginCrashedEvent.h"
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#include "mozilla/AsyncEventDispatcher.h"
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#include "mozilla/EventDispatcher.h"
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#include "mozilla/EventStateManager.h"
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#include "mozilla/EventStates.h"
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#include "mozilla/IMEStateManager.h"
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#include "mozilla/widget/IMEData.h"
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#include "mozilla/IntegerPrintfMacros.h"
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#include "mozilla/dom/HTMLObjectElementBinding.h"
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#include "mozilla/dom/HTMLEmbedElement.h"
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#include "mozilla/dom/HTMLObjectElement.h"
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#include "mozilla/net/UrlClassifierFeatureFactory.h"
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#include "mozilla/LoadInfo.h"
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#include "mozilla/PresShell.h"
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#include "nsChannelClassifier.h"
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#include "nsFocusManager.h"
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#include "ReferrerInfo.h"
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#ifdef XP_WIN
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// Thanks so much, Microsoft! :(
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# ifdef CreateEvent
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# undef CreateEvent
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# endif
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#endif // XP_WIN
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static NS_DEFINE_CID(kAppShellCID, NS_APPSHELL_CID);
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static const char kPrefYoutubeRewrite[] = "plugins.rewrite_youtube_embeds";
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static const char kPrefBlockURIs[] = "browser.safebrowsing.blockedURIs.enabled";
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static const char kPrefFavorFallbackMode[] = "plugins.favorfallback.mode";
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static const char kPrefFavorFallbackRules[] = "plugins.favorfallback.rules";
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using namespace mozilla;
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using namespace mozilla::dom;
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using namespace mozilla::net;
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static LogModule* GetObjectLog() {
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static LazyLogModule sLog("objlc");
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return sLog;
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}
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#define LOG(args) MOZ_LOG(GetObjectLog(), mozilla::LogLevel::Debug, args)
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#define LOG_ENABLED() MOZ_LOG_TEST(GetObjectLog(), mozilla::LogLevel::Debug)
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static bool IsFlashMIME(const nsACString& aMIMEType) {
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return nsPluginHost::GetSpecialType(aMIMEType) ==
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nsPluginHost::eSpecialType_Flash;
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}
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static bool InActiveDocument(nsIContent* aContent) {
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if (!aContent->IsInComposedDoc()) {
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return false;
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}
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Document* doc = aContent->OwnerDoc();
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return (doc && doc->IsActive());
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}
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static bool IsPluginType(nsObjectLoadingContent::ObjectType type) {
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return type == nsObjectLoadingContent::eType_Plugin ||
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type == nsObjectLoadingContent::eType_FakePlugin;
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}
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///
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/// Runnables and helper classes
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///
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class nsAsyncInstantiateEvent : public Runnable {
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public:
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explicit nsAsyncInstantiateEvent(nsObjectLoadingContent* aContent)
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: Runnable("nsAsyncInstantiateEvent"), mContent(aContent) {}
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~nsAsyncInstantiateEvent() override = default;
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NS_IMETHOD Run() override;
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private:
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nsCOMPtr<nsIObjectLoadingContent> mContent;
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};
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NS_IMETHODIMP
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nsAsyncInstantiateEvent::Run() {
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nsObjectLoadingContent* objLC =
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static_cast<nsObjectLoadingContent*>(mContent.get());
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// If objLC is no longer tracking this event, we've been canceled or
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// superseded
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if (objLC->mPendingInstantiateEvent != this) {
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return NS_OK;
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}
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objLC->mPendingInstantiateEvent = nullptr;
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return objLC->SyncStartPluginInstance();
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}
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// Checks to see if the content for a plugin instance should be unloaded
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// (outside an active document) or stopped (in a document but unrendered). This
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// is used to allow scripts to move a plugin around the document hierarchy
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// without re-instantiating it.
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class CheckPluginStopEvent : public Runnable {
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public:
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explicit CheckPluginStopEvent(nsObjectLoadingContent* aContent)
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: Runnable("CheckPluginStopEvent"), mContent(aContent) {}
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~CheckPluginStopEvent() override = default;
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NS_IMETHOD Run() override;
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private:
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nsCOMPtr<nsIObjectLoadingContent> mContent;
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};
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NS_IMETHODIMP
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CheckPluginStopEvent::Run() {
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nsObjectLoadingContent* objLC =
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static_cast<nsObjectLoadingContent*>(mContent.get());
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// If objLC is no longer tracking this event, we've been canceled or
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// superseded. We clear this before we finish - either by calling
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// UnloadObject/StopPluginInstance, or directly if we took no action.
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if (objLC->mPendingCheckPluginStopEvent != this) {
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return NS_OK;
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}
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// CheckPluginStopEvent is queued when we either lose our frame, are removed
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// from the document, or the document goes inactive. To avoid stopping the
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// plugin when script is reparenting us or layout is rebuilding, we wait until
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// this event to decide to stop.
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nsCOMPtr<nsIContent> content =
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do_QueryInterface(static_cast<nsIImageLoadingContent*>(objLC));
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if (!InActiveDocument(content)) {
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LOG(("OBJLC [%p]: Unloading plugin outside of document", this));
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objLC->StopPluginInstance();
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return NS_OK;
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}
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if (content->GetPrimaryFrame()) {
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LOG(
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("OBJLC [%p]: CheckPluginStopEvent - in active document with frame"
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", no action",
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this));
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objLC->mPendingCheckPluginStopEvent = nullptr;
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return NS_OK;
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}
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// In an active document, but still no frame. Flush layout to see if we can
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// regain a frame now.
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LOG(("OBJLC [%p]: CheckPluginStopEvent - No frame, flushing layout", this));
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Document* composedDoc = content->GetComposedDoc();
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if (composedDoc) {
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composedDoc->FlushPendingNotifications(FlushType::Layout);
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if (objLC->mPendingCheckPluginStopEvent != this) {
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LOG(("OBJLC [%p]: CheckPluginStopEvent - superseded in layout flush",
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this));
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return NS_OK;
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}
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if (content->GetPrimaryFrame()) {
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LOG(("OBJLC [%p]: CheckPluginStopEvent - frame gained in layout flush",
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this));
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objLC->mPendingCheckPluginStopEvent = nullptr;
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return NS_OK;
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}
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}
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// Still no frame, suspend plugin. HasNewFrame will restart us when we
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// become rendered again
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LOG(("OBJLC [%p]: Stopping plugin that lost frame", this));
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objLC->StopPluginInstance();
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return NS_OK;
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}
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/**
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* Helper task for firing simple events
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*/
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class nsSimplePluginEvent : public Runnable {
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public:
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nsSimplePluginEvent(nsIContent* aTarget, const nsAString& aEvent)
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: Runnable("nsSimplePluginEvent"),
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mTarget(aTarget),
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mDocument(aTarget->GetComposedDoc()),
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mEvent(aEvent) {
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MOZ_ASSERT(aTarget && mDocument);
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}
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nsSimplePluginEvent(Document* aTarget, const nsAString& aEvent)
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: mozilla::Runnable("nsSimplePluginEvent"),
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mTarget(ToSupports(aTarget)),
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mDocument(aTarget),
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mEvent(aEvent) {
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MOZ_ASSERT(aTarget);
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}
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nsSimplePluginEvent(nsIContent* aTarget, Document* aDocument,
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const nsAString& aEvent)
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: mozilla::Runnable("nsSimplePluginEvent"),
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mTarget(aTarget),
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mDocument(aDocument),
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mEvent(aEvent) {
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MOZ_ASSERT(aTarget && aDocument);
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}
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~nsSimplePluginEvent() override = default;
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NS_IMETHOD Run() override;
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private:
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nsCOMPtr<nsISupports> mTarget;
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nsCOMPtr<Document> mDocument;
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nsString mEvent;
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};
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NS_IMETHODIMP
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nsSimplePluginEvent::Run() {
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if (mDocument && mDocument->IsActive()) {
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LOG(("OBJLC [%p]: nsSimplePluginEvent firing event \"%s\"", mTarget.get(),
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NS_ConvertUTF16toUTF8(mEvent).get()));
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nsContentUtils::DispatchTrustedEvent(mDocument, mTarget, mEvent,
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CanBubble::eYes, Cancelable::eYes);
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}
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return NS_OK;
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}
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/**
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* A task for firing PluginCrashed DOM Events.
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*/
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class nsPluginCrashedEvent : public Runnable {
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public:
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nsCOMPtr<nsIContent> mContent;
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nsString mPluginDumpID;
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nsString mBrowserDumpID;
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nsString mPluginName;
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nsString mPluginFilename;
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bool mSubmittedCrashReport;
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nsPluginCrashedEvent(nsIContent* aContent, const nsAString& aPluginDumpID,
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const nsAString& aBrowserDumpID,
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const nsAString& aPluginName,
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const nsAString& aPluginFilename,
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bool submittedCrashReport)
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: Runnable("nsPluginCrashedEvent"),
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mContent(aContent),
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mPluginDumpID(aPluginDumpID),
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mBrowserDumpID(aBrowserDumpID),
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mPluginName(aPluginName),
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mPluginFilename(aPluginFilename),
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mSubmittedCrashReport(submittedCrashReport) {}
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~nsPluginCrashedEvent() override = default;
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NS_IMETHOD Run() override;
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};
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NS_IMETHODIMP
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nsPluginCrashedEvent::Run() {
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LOG(("OBJLC [%p]: Firing plugin crashed event\n", mContent.get()));
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nsCOMPtr<Document> doc = mContent->GetComposedDoc();
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if (!doc) {
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NS_WARNING("Couldn't get document for PluginCrashed event!");
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return NS_OK;
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}
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PluginCrashedEventInit init;
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init.mPluginDumpID = mPluginDumpID;
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init.mBrowserDumpID = mBrowserDumpID;
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init.mPluginName = mPluginName;
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init.mPluginFilename = mPluginFilename;
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init.mSubmittedCrashReport = mSubmittedCrashReport;
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init.mBubbles = true;
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init.mCancelable = true;
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RefPtr<PluginCrashedEvent> event = PluginCrashedEvent::Constructor(
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doc, NS_LITERAL_STRING("PluginCrashed"), init);
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event->SetTrusted(true);
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event->WidgetEventPtr()->mFlags.mOnlyChromeDispatch = true;
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EventDispatcher::DispatchDOMEvent(mContent, nullptr, event, nullptr, nullptr);
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return NS_OK;
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}
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// You can't take the address of bitfield members, so we have two separate
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// classes for these :-/
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// Sets a object's mInstantiating bit to false when destroyed
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class AutoSetInstantiatingToFalse {
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public:
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explicit AutoSetInstantiatingToFalse(nsObjectLoadingContent* aContent)
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: mContent(aContent) {}
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~AutoSetInstantiatingToFalse() { mContent->mInstantiating = false; }
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private:
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nsObjectLoadingContent* mContent;
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};
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// Sets a object's mInstantiating bit to false when destroyed
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class AutoSetLoadingToFalse {
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public:
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explicit AutoSetLoadingToFalse(nsObjectLoadingContent* aContent)
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: mContent(aContent) {}
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~AutoSetLoadingToFalse() { mContent->mIsLoading = false; }
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private:
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nsObjectLoadingContent* mContent;
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};
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///
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/// Helper functions
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///
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static bool IsSuccessfulRequest(nsIRequest* aRequest, nsresult* aStatus) {
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nsresult rv = aRequest->GetStatus(aStatus);
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if (NS_FAILED(rv) || NS_FAILED(*aStatus)) {
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return false;
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}
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// This may still be an error page or somesuch
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nsCOMPtr<nsIHttpChannel> httpChan(do_QueryInterface(aRequest));
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if (httpChan) {
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bool success;
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rv = httpChan->GetRequestSucceeded(&success);
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if (NS_FAILED(rv) || !success) {
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return false;
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}
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}
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// Otherwise, the request is successful
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return true;
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}
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static bool CanHandleURI(nsIURI* aURI) {
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nsAutoCString scheme;
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if (NS_FAILED(aURI->GetScheme(scheme))) {
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return false;
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}
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nsIIOService* ios = nsContentUtils::GetIOService();
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if (!ios) return false;
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nsCOMPtr<nsIProtocolHandler> handler;
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ios->GetProtocolHandler(scheme.get(), getter_AddRefs(handler));
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if (!handler) {
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return false;
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}
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nsCOMPtr<nsIExternalProtocolHandler> extHandler = do_QueryInterface(handler);
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// We can handle this URI if its protocol handler is not the external one
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return extHandler == nullptr;
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}
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// Helper for tedious URI equality syntax when one or both arguments may be
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// null and URIEquals(null, null) should be true
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static bool inline URIEquals(nsIURI* a, nsIURI* b) {
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bool equal;
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return (!a && !b) || (a && b && NS_SUCCEEDED(a->Equals(b, &equal)) && equal);
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}
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static void GetExtensionFromURI(nsIURI* uri, nsCString& ext) {
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nsCOMPtr<nsIURL> url(do_QueryInterface(uri));
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if (url) {
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url->GetFileExtension(ext);
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} else {
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nsCString spec;
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nsresult rv = uri->GetSpec(spec);
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if (NS_FAILED(rv)) {
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// This means we could incorrectly think a plugin is not enabled for
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// the URI when it is, but that's not so bad.
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ext.Truncate();
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return;
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}
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int32_t offset = spec.RFindChar('.');
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if (offset != kNotFound) {
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ext = Substring(spec, offset + 1, spec.Length());
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}
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}
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}
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/**
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* Checks whether a plugin exists and is enabled for the extension
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* in the given URI. The MIME type is returned in the mimeType out parameter.
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*/
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bool IsPluginEnabledByExtension(nsIURI* uri, nsCString& mimeType) {
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nsAutoCString ext;
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GetExtensionFromURI(uri, ext);
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if (ext.IsEmpty()) {
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return false;
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}
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// Disables any native PDF plugins, when internal PDF viewer is enabled.
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if (ext.EqualsIgnoreCase("pdf") && nsContentUtils::IsPDFJSEnabled()) {
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return false;
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}
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RefPtr<nsPluginHost> pluginHost = nsPluginHost::GetInst();
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if (!pluginHost) {
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MOZ_ASSERT_UNREACHABLE("No pluginhost");
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return false;
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}
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return pluginHost->HavePluginForExtension(ext, mimeType);
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}
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///
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/// Member Functions
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///
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// Helper to queue a CheckPluginStopEvent for a OBJLC object
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void nsObjectLoadingContent::QueueCheckPluginStopEvent() {
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nsCOMPtr<nsIRunnable> event = new CheckPluginStopEvent(this);
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mPendingCheckPluginStopEvent = event;
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NS_DispatchToCurrentThread(event);
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}
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// Tedious syntax to create a plugin stream listener with checks and put it in
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// mFinalListener
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bool nsObjectLoadingContent::MakePluginListener() {
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if (!mInstanceOwner) {
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MOZ_ASSERT_UNREACHABLE("expecting a spawned plugin");
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return false;
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}
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RefPtr<nsPluginHost> pluginHost = nsPluginHost::GetInst();
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if (!pluginHost) {
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MOZ_ASSERT_UNREACHABLE("No pluginHost");
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return false;
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}
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NS_ASSERTION(!mFinalListener, "overwriting a final listener");
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nsresult rv;
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RefPtr<nsNPAPIPluginInstance> inst = mInstanceOwner->GetInstance();
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|
nsCOMPtr<nsIStreamListener> finalListener;
|
|
rv = pluginHost->NewPluginStreamListener(mURI, inst,
|
|
getter_AddRefs(finalListener));
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
mFinalListener = finalListener;
|
|
return true;
|
|
}
|
|
|
|
// Helper to spawn the frameloader.
|
|
void nsObjectLoadingContent::SetupFrameLoader(int32_t aJSPluginId) {
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
NS_ASSERTION(thisContent, "must be a content");
|
|
|
|
mFrameLoader =
|
|
nsFrameLoader::Create(thisContent->AsElement(),
|
|
/* aOpener = */ nullptr, mNetworkCreated);
|
|
MOZ_ASSERT(mFrameLoader, "nsFrameLoader::Create failed");
|
|
}
|
|
|
|
// Helper to spawn the frameloader and return a pointer to its docshell.
|
|
already_AddRefed<nsIDocShell> nsObjectLoadingContent::SetupDocShell(
|
|
nsIURI* aRecursionCheckURI) {
|
|
SetupFrameLoader(nsFakePluginTag::NOT_JSPLUGIN);
|
|
if (!mFrameLoader) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShell> docShell;
|
|
|
|
if (aRecursionCheckURI) {
|
|
nsresult rv = mFrameLoader->CheckForRecursiveLoad(aRecursionCheckURI);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
IgnoredErrorResult result;
|
|
docShell = mFrameLoader->GetDocShell(result);
|
|
if (result.Failed()) {
|
|
MOZ_ASSERT_UNREACHABLE("Could not get DocShell from mFrameLoader?");
|
|
}
|
|
} else {
|
|
LOG(("OBJLC [%p]: Aborting recursive load", this));
|
|
}
|
|
}
|
|
|
|
if (!docShell) {
|
|
mFrameLoader->Destroy();
|
|
mFrameLoader = nullptr;
|
|
return nullptr;
|
|
}
|
|
|
|
return docShell.forget();
|
|
}
|
|
|
|
nsresult nsObjectLoadingContent::BindToTree(BindContext& aContext,
|
|
nsINode& aParent) {
|
|
nsImageLoadingContent::BindToTree(aContext, aParent);
|
|
// FIXME(emilio): Should probably use composed doc?
|
|
if (Document* doc = aContext.GetUncomposedDoc()) {
|
|
doc->AddPlugin(this);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsObjectLoadingContent::UnbindFromTree(bool aNullParent) {
|
|
nsImageLoadingContent::UnbindFromTree(aNullParent);
|
|
|
|
nsCOMPtr<Element> thisElement =
|
|
do_QueryInterface(static_cast<nsIObjectLoadingContent*>(this));
|
|
MOZ_ASSERT(thisElement);
|
|
Document* ownerDoc = thisElement->OwnerDoc();
|
|
ownerDoc->RemovePlugin(this);
|
|
|
|
/// XXX(johns): Do we want to somehow propogate the reparenting behavior to
|
|
/// FakePlugin types as well?
|
|
if (mType == eType_Plugin && (mInstanceOwner || mInstantiating)) {
|
|
// we'll let the plugin continue to run at least until we get back to
|
|
// the event loop. If we get back to the event loop and the node
|
|
// has still not been added back to the document then we tear down the
|
|
// plugin
|
|
QueueCheckPluginStopEvent();
|
|
} else if (mType != eType_Image) {
|
|
// nsImageLoadingContent handles the image case.
|
|
// Reset state and clear pending events
|
|
/// XXX(johns): The implementation for GenericFrame notes that ideally we
|
|
/// would keep the docshell around, but trash the frameloader
|
|
UnloadObject();
|
|
}
|
|
|
|
// Unattach plugin problem UIWidget if any.
|
|
if (thisElement->IsInComposedDoc()) {
|
|
thisElement->NotifyUAWidgetTeardown();
|
|
}
|
|
|
|
if (mType == eType_Plugin) {
|
|
Document* doc = thisElement->GetComposedDoc();
|
|
if (doc && doc->IsActive()) {
|
|
nsCOMPtr<nsIRunnable> ev =
|
|
new nsSimplePluginEvent(doc, NS_LITERAL_STRING("PluginRemoved"));
|
|
NS_DispatchToCurrentThread(ev);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsObjectLoadingContent::nsObjectLoadingContent()
|
|
: mType(eType_Loading),
|
|
mFallbackType(eFallbackAlternate),
|
|
mRunID(0),
|
|
mHasRunID(false),
|
|
mChannelLoaded(false),
|
|
mInstantiating(false),
|
|
mNetworkCreated(true),
|
|
mActivated(false),
|
|
mContentBlockingEnabled(false),
|
|
mSkipFakePlugins(false),
|
|
mIsStopping(false),
|
|
mIsLoading(false),
|
|
mScriptRequested(false),
|
|
mRewrittenYoutubeEmbed(false),
|
|
mPreferFallback(false),
|
|
mPreferFallbackKnown(false) {}
|
|
|
|
nsObjectLoadingContent::~nsObjectLoadingContent() {
|
|
// Should have been unbound from the tree at this point, and
|
|
// CheckPluginStopEvent keeps us alive
|
|
if (mFrameLoader) {
|
|
MOZ_ASSERT_UNREACHABLE(
|
|
"Should not be tearing down frame loaders at this point");
|
|
mFrameLoader->Destroy();
|
|
}
|
|
if (mInstanceOwner || mInstantiating) {
|
|
// This is especially bad as delayed stop will try to hold on to this
|
|
// object...
|
|
MOZ_ASSERT_UNREACHABLE(
|
|
"Should not be tearing down a plugin at this point!");
|
|
StopPluginInstance();
|
|
}
|
|
DestroyImageLoadingContent();
|
|
}
|
|
|
|
nsresult nsObjectLoadingContent::InstantiatePluginInstance(bool aIsLoading) {
|
|
if (mInstanceOwner || mType != eType_Plugin || (mIsLoading != aIsLoading) ||
|
|
mInstantiating) {
|
|
// If we hit this assertion it's probably because LoadObject re-entered :(
|
|
//
|
|
// XXX(johns): This hackiness will go away in bug 767635
|
|
NS_ASSERTION(mIsLoading || !aIsLoading,
|
|
"aIsLoading should only be true inside LoadObject");
|
|
return NS_OK;
|
|
}
|
|
|
|
mInstantiating = true;
|
|
AutoSetInstantiatingToFalse autoInstantiating(this);
|
|
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
|
|
nsCOMPtr<Document> doc = thisContent->GetComposedDoc();
|
|
if (!doc || !InActiveDocument(thisContent)) {
|
|
NS_ERROR(
|
|
"Shouldn't be calling "
|
|
"InstantiatePluginInstance without an active document");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Instantiating an instance can result in script execution, which
|
|
// can destroy this DOM object. Don't allow that for the scope
|
|
// of this method.
|
|
nsCOMPtr<nsIObjectLoadingContent> kungFuDeathGrip = this;
|
|
|
|
// Flush layout so that the frame is created if possible and the plugin is
|
|
// initialized with the latest information.
|
|
doc->FlushPendingNotifications(FlushType::Layout);
|
|
// Flushing layout may have re-entered and loaded something underneath us
|
|
NS_ENSURE_TRUE(mInstantiating, NS_OK);
|
|
|
|
if (!thisContent->GetPrimaryFrame()) {
|
|
LOG(("OBJLC [%p]: Not instantiating plugin with no frame", this));
|
|
return NS_OK;
|
|
}
|
|
|
|
RefPtr<nsPluginHost> pluginHost = nsPluginHost::GetInst();
|
|
|
|
if (!pluginHost) {
|
|
MOZ_ASSERT_UNREACHABLE("No pluginhost");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// If you add early return(s), be sure to balance this call to
|
|
// appShell->SuspendNative() with additional call(s) to
|
|
// appShell->ReturnNative().
|
|
nsCOMPtr<nsIAppShell> appShell = do_GetService(kAppShellCID);
|
|
if (appShell) {
|
|
appShell->SuspendNative();
|
|
}
|
|
|
|
RefPtr<nsPluginInstanceOwner> newOwner;
|
|
nsresult rv = pluginHost->InstantiatePluginInstance(
|
|
mContentType, mURI.get(), this, getter_AddRefs(newOwner));
|
|
|
|
// XXX(johns): We don't suspend native inside stopping plugins...
|
|
if (appShell) {
|
|
appShell->ResumeNative();
|
|
}
|
|
|
|
if (!mInstantiating || NS_FAILED(rv)) {
|
|
LOG(
|
|
("OBJLC [%p]: Plugin instantiation failed or re-entered, "
|
|
"killing old instance",
|
|
this));
|
|
// XXX(johns): This needs to be de-duplicated with DoStopPlugin, but we
|
|
// don't want to touch the protochain or delayed stop.
|
|
// (Bug 767635)
|
|
if (newOwner) {
|
|
RefPtr<nsNPAPIPluginInstance> inst = newOwner->GetInstance();
|
|
newOwner->SetFrame(nullptr);
|
|
if (inst) {
|
|
pluginHost->StopPluginInstance(inst);
|
|
}
|
|
newOwner->Destroy();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
mInstanceOwner = newOwner;
|
|
|
|
if (mInstanceOwner) {
|
|
RefPtr<nsNPAPIPluginInstance> inst = mInstanceOwner->GetInstance();
|
|
|
|
rv = inst->GetRunID(&mRunID);
|
|
mHasRunID = NS_SUCCEEDED(rv);
|
|
}
|
|
|
|
// Ensure the frame did not change during instantiation re-entry (common).
|
|
// HasNewFrame would not have mInstanceOwner yet, so the new frame would be
|
|
// dangling. (Bug 854082)
|
|
nsIFrame* frame = thisContent->GetPrimaryFrame();
|
|
if (frame && mInstanceOwner) {
|
|
mInstanceOwner->SetFrame(static_cast<nsPluginFrame*>(frame));
|
|
|
|
// Bug 870216 - Adobe Reader renders with incorrect dimensions until it gets
|
|
// a second SetWindow call. This is otherwise redundant.
|
|
mInstanceOwner->CallSetWindow();
|
|
}
|
|
|
|
// Set up scripting interfaces.
|
|
NotifyContentObjectWrapper();
|
|
|
|
RefPtr<nsNPAPIPluginInstance> pluginInstance = GetPluginInstance();
|
|
if (pluginInstance) {
|
|
nsCOMPtr<nsIPluginTag> pluginTag;
|
|
pluginHost->GetPluginTagForInstance(pluginInstance,
|
|
getter_AddRefs(pluginTag));
|
|
|
|
uint32_t blockState = nsIBlocklistService::STATE_NOT_BLOCKED;
|
|
pluginTag->GetBlocklistState(&blockState);
|
|
if (blockState == nsIBlocklistService::STATE_OUTDATED) {
|
|
// Fire plugin outdated event if necessary
|
|
LOG(("OBJLC [%p]: Dispatching plugin outdated event for content\n",
|
|
this));
|
|
nsCOMPtr<nsIRunnable> ev = new nsSimplePluginEvent(
|
|
thisContent, NS_LITERAL_STRING("PluginOutdated"));
|
|
nsresult rv = NS_DispatchToCurrentThread(ev);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("failed to dispatch nsSimplePluginEvent");
|
|
}
|
|
}
|
|
|
|
// If we have a URI but didn't open a channel yet (eAllowPluginSkipChannel)
|
|
// or we did load with a channel but are re-instantiating, re-open the
|
|
// channel. OpenChannel() performs security checks, and this plugin has
|
|
// already passed content policy in LoadObject.
|
|
if ((mURI && !mChannelLoaded) || (mChannelLoaded && !aIsLoading)) {
|
|
NS_ASSERTION(!mChannel, "should not have an existing channel here");
|
|
// We intentionally ignore errors here, leaving it up to the plugin to
|
|
// deal with not having an initial stream.
|
|
OpenChannel();
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIRunnable> ev = new nsSimplePluginEvent(
|
|
thisContent, doc, NS_LITERAL_STRING("PluginInstantiated"));
|
|
NS_DispatchToCurrentThread(ev);
|
|
|
|
#ifdef XP_MACOSX
|
|
HTMLObjectElement::HandlePluginInstantiated(thisContent->AsElement());
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsObjectLoadingContent::GetPluginAttributes(
|
|
nsTArray<MozPluginParameter>& aAttributes) {
|
|
aAttributes = mCachedAttributes;
|
|
}
|
|
|
|
void nsObjectLoadingContent::GetPluginParameters(
|
|
nsTArray<MozPluginParameter>& aParameters) {
|
|
aParameters = mCachedParameters;
|
|
}
|
|
|
|
void nsObjectLoadingContent::GetNestedParams(
|
|
nsTArray<MozPluginParameter>& aParams) {
|
|
nsCOMPtr<Element> ourElement =
|
|
do_QueryInterface(static_cast<nsIObjectLoadingContent*>(this));
|
|
|
|
nsCOMPtr<nsIHTMLCollection> allParams;
|
|
NS_NAMED_LITERAL_STRING(xhtml_ns, "http://www.w3.org/1999/xhtml");
|
|
ErrorResult rv;
|
|
allParams = ourElement->GetElementsByTagNameNS(
|
|
xhtml_ns, NS_LITERAL_STRING("param"), rv);
|
|
if (rv.Failed()) {
|
|
return;
|
|
}
|
|
MOZ_ASSERT(allParams);
|
|
|
|
uint32_t numAllParams = allParams->Length();
|
|
for (uint32_t i = 0; i < numAllParams; i++) {
|
|
RefPtr<Element> element = allParams->Item(i);
|
|
|
|
nsAutoString name;
|
|
element->GetAttribute(NS_LITERAL_STRING("name"), name);
|
|
|
|
if (name.IsEmpty()) continue;
|
|
|
|
nsCOMPtr<nsIContent> parent = element->GetParent();
|
|
RefPtr<HTMLObjectElement> objectElement;
|
|
while (!objectElement && parent) {
|
|
objectElement = HTMLObjectElement::FromNode(parent);
|
|
parent = parent->GetParent();
|
|
}
|
|
|
|
if (objectElement) {
|
|
parent = objectElement;
|
|
} else {
|
|
continue;
|
|
}
|
|
|
|
if (parent == ourElement) {
|
|
MozPluginParameter param;
|
|
element->GetAttribute(NS_LITERAL_STRING("name"), param.mName);
|
|
element->GetAttribute(NS_LITERAL_STRING("value"), param.mValue);
|
|
|
|
param.mName.Trim(" \n\r\t\b", true, true, false);
|
|
param.mValue.Trim(" \n\r\t\b", true, true, false);
|
|
|
|
aParams.AppendElement(param);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult nsObjectLoadingContent::BuildParametersArray() {
|
|
if (mCachedAttributes.Length() || mCachedParameters.Length()) {
|
|
MOZ_ASSERT(false, "Parameters array should be empty.");
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<Element> element =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
|
|
for (uint32_t i = 0; i != element->GetAttrCount(); i += 1) {
|
|
MozPluginParameter param;
|
|
const nsAttrName* attrName = element->GetAttrNameAt(i);
|
|
nsAtom* atom = attrName->LocalName();
|
|
element->GetAttr(attrName->NamespaceID(), atom, param.mValue);
|
|
atom->ToString(param.mName);
|
|
mCachedAttributes.AppendElement(param);
|
|
}
|
|
|
|
nsAutoCString wmodeOverride;
|
|
Preferences::GetCString("plugins.force.wmode", wmodeOverride);
|
|
|
|
for (uint32_t i = 0; i < mCachedAttributes.Length(); i++) {
|
|
if (!wmodeOverride.IsEmpty() &&
|
|
mCachedAttributes[i].mName.EqualsIgnoreCase("wmode")) {
|
|
CopyASCIItoUTF16(wmodeOverride, mCachedAttributes[i].mValue);
|
|
wmodeOverride.Truncate();
|
|
}
|
|
}
|
|
|
|
if (!wmodeOverride.IsEmpty()) {
|
|
MozPluginParameter param;
|
|
param.mName = NS_LITERAL_STRING("wmode");
|
|
CopyASCIItoUTF16(wmodeOverride, param.mValue);
|
|
mCachedAttributes.AppendElement(param);
|
|
}
|
|
|
|
// Some plugins were never written to understand the "data" attribute of the
|
|
// OBJECT tag. Real and WMP will not play unless they find a "src" attribute,
|
|
// see bug 152334. Nav 4.x would simply replace the "data" with "src". Because
|
|
// some plugins correctly look for "data", lets instead copy the "data"
|
|
// attribute and add another entry to the bottom of the array if there isn't
|
|
// already a "src" specified.
|
|
if (element->IsHTMLElement(nsGkAtoms::object) &&
|
|
!element->HasAttr(kNameSpaceID_None, nsGkAtoms::src)) {
|
|
MozPluginParameter param;
|
|
element->GetAttr(kNameSpaceID_None, nsGkAtoms::data, param.mValue);
|
|
if (!param.mValue.IsEmpty()) {
|
|
param.mName = NS_LITERAL_STRING("SRC");
|
|
mCachedAttributes.AppendElement(param);
|
|
}
|
|
}
|
|
|
|
GetNestedParams(mCachedParameters);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsObjectLoadingContent::NotifyOwnerDocumentActivityChanged() {
|
|
// XXX(johns): We cannot touch plugins or run arbitrary script from this call,
|
|
// as Document is in a non-reentrant state.
|
|
|
|
// If we have a plugin we want to queue an event to stop it unless we are
|
|
// moved into an active document before returning to the event loop.
|
|
if (mInstanceOwner || mInstantiating) {
|
|
QueueCheckPluginStopEvent();
|
|
}
|
|
nsImageLoadingContent::NotifyOwnerDocumentActivityChanged();
|
|
}
|
|
|
|
// nsIRequestObserver
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::OnStartRequest(nsIRequest* aRequest) {
|
|
AUTO_PROFILER_LABEL("nsObjectLoadingContent::OnStartRequest", NETWORK);
|
|
|
|
LOG(("OBJLC [%p]: Channel OnStartRequest", this));
|
|
|
|
if (aRequest != mChannel || !aRequest) {
|
|
// happens when a new load starts before the previous one got here
|
|
return NS_BINDING_ABORTED;
|
|
}
|
|
|
|
// If we already switched to type plugin, this channel can just be passed to
|
|
// the final listener.
|
|
if (mType == eType_Plugin) {
|
|
if (!mInstanceOwner) {
|
|
// We drop mChannel when stopping plugins, so something is wrong
|
|
MOZ_ASSERT_UNREACHABLE(
|
|
"Opened a channel in plugin mode, but don't have "
|
|
"a plugin");
|
|
return NS_BINDING_ABORTED;
|
|
}
|
|
if (MakePluginListener()) {
|
|
return mFinalListener->OnStartRequest(aRequest);
|
|
}
|
|
MOZ_ASSERT_UNREACHABLE(
|
|
"Failed to create PluginStreamListener, aborting "
|
|
"channel");
|
|
return NS_BINDING_ABORTED;
|
|
}
|
|
|
|
// Otherwise we should be state loading, and call LoadObject with the channel
|
|
if (mType != eType_Loading) {
|
|
MOZ_ASSERT_UNREACHABLE("Should be type loading at this point");
|
|
return NS_BINDING_ABORTED;
|
|
}
|
|
NS_ASSERTION(!mChannelLoaded, "mChannelLoaded set already?");
|
|
NS_ASSERTION(!mFinalListener, "mFinalListener exists already?");
|
|
|
|
mChannelLoaded = true;
|
|
|
|
nsCOMPtr<nsIChannel> chan(do_QueryInterface(aRequest));
|
|
NS_ASSERTION(chan, "Why is our request not a channel?");
|
|
|
|
nsresult status = NS_OK;
|
|
bool success = IsSuccessfulRequest(aRequest, &status);
|
|
|
|
if (status == NS_ERROR_BLOCKED_URI) {
|
|
nsCOMPtr<nsIConsoleService> console(
|
|
do_GetService("@mozilla.org/consoleservice;1"));
|
|
if (console) {
|
|
nsCOMPtr<nsIURI> uri;
|
|
chan->GetURI(getter_AddRefs(uri));
|
|
nsString message =
|
|
NS_LITERAL_STRING("Blocking ") +
|
|
NS_ConvertASCIItoUTF16(uri->GetSpecOrDefault().get()) +
|
|
NS_LITERAL_STRING(
|
|
" since it was found on an internal Firefox blocklist.");
|
|
console->LogStringMessage(message.get());
|
|
}
|
|
mContentBlockingEnabled = true;
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (UrlClassifierFeatureFactory::IsClassifierBlockingErrorCode(status)) {
|
|
mContentBlockingEnabled = true;
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (!success) {
|
|
LOG(("OBJLC [%p]: OnStartRequest: Request failed\n", this));
|
|
// If the request fails, we still call LoadObject() to handle fallback
|
|
// content and notifying of failure. (mChannelLoaded && !mChannel) indicates
|
|
// the bad state.
|
|
mChannel = nullptr;
|
|
LoadObject(true, false);
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return LoadObject(true, false, aRequest);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::OnStopRequest(nsIRequest* aRequest,
|
|
nsresult aStatusCode) {
|
|
AUTO_PROFILER_LABEL("nsObjectLoadingContent::OnStopRequest", NETWORK);
|
|
|
|
// Handle object not loading error because source was a tracking URL (or
|
|
// fingerprinting, cryptomining, etc.).
|
|
// We make a note of this object node by including it in a dedicated
|
|
// array of blocked tracking nodes under its parent document.
|
|
if (UrlClassifierFeatureFactory::IsClassifierBlockingErrorCode(aStatusCode)) {
|
|
nsCOMPtr<nsIContent> thisNode =
|
|
do_QueryInterface(static_cast<nsIObjectLoadingContent*>(this));
|
|
if (thisNode && thisNode->IsInComposedDoc()) {
|
|
thisNode->GetComposedDoc()->AddBlockedNodeByClassifier(thisNode);
|
|
}
|
|
}
|
|
|
|
if (aRequest != mChannel) {
|
|
return NS_BINDING_ABORTED;
|
|
}
|
|
|
|
mChannel = nullptr;
|
|
|
|
if (mFinalListener) {
|
|
// This may re-enter in the case of plugin listeners
|
|
nsCOMPtr<nsIStreamListener> listenerGrip(mFinalListener);
|
|
mFinalListener = nullptr;
|
|
listenerGrip->OnStopRequest(aRequest, aStatusCode);
|
|
}
|
|
|
|
// Return value doesn't matter
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsIStreamListener
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::OnDataAvailable(nsIRequest* aRequest,
|
|
nsIInputStream* aInputStream,
|
|
uint64_t aOffset, uint32_t aCount) {
|
|
if (aRequest != mChannel) {
|
|
return NS_BINDING_ABORTED;
|
|
}
|
|
|
|
if (mFinalListener) {
|
|
// This may re-enter in the case of plugin listeners
|
|
nsCOMPtr<nsIStreamListener> listenerGrip(mFinalListener);
|
|
return listenerGrip->OnDataAvailable(aRequest, aInputStream, aOffset,
|
|
aCount);
|
|
}
|
|
|
|
// We shouldn't have a connected channel with no final listener
|
|
MOZ_ASSERT_UNREACHABLE(
|
|
"Got data for channel with no connected final "
|
|
"listener");
|
|
mChannel = nullptr;
|
|
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
void nsObjectLoadingContent::PresetOpenerWindow(
|
|
const Nullable<WindowProxyHolder>& aOpenerWindow, ErrorResult& aRv) {
|
|
aRv.Throw(NS_ERROR_FAILURE);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::GetActualType(nsACString& aType) {
|
|
aType = mContentType;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::GetDisplayedType(uint32_t* aType) {
|
|
*aType = DisplayedType();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::HasNewFrame(nsIObjectFrame* aFrame) {
|
|
if (mType != eType_Plugin) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!aFrame) {
|
|
// Lost our frame. If we aren't going to be getting a new frame, e.g. we've
|
|
// become display:none, we'll want to stop the plugin. Queue a
|
|
// CheckPluginStopEvent
|
|
if (mInstanceOwner || mInstantiating) {
|
|
if (mInstanceOwner) {
|
|
mInstanceOwner->SetFrame(nullptr);
|
|
}
|
|
QueueCheckPluginStopEvent();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// Have a new frame
|
|
|
|
if (!mInstanceOwner) {
|
|
// We are successfully setup as type plugin, but have not spawned an
|
|
// instance due to a lack of a frame.
|
|
AsyncStartPluginInstance();
|
|
return NS_OK;
|
|
}
|
|
|
|
// Otherwise, we're just changing frames
|
|
// Set up relationship between instance owner and frame.
|
|
nsPluginFrame* objFrame = static_cast<nsPluginFrame*>(aFrame);
|
|
mInstanceOwner->SetFrame(objFrame);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsNPAPIPluginInstance* nsObjectLoadingContent::GetPluginInstance() {
|
|
if (!mInstanceOwner) {
|
|
return nullptr;
|
|
}
|
|
|
|
return mInstanceOwner->GetInstance();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::GetContentTypeForMIMEType(const nsACString& aMIMEType,
|
|
uint32_t* aType) {
|
|
*aType = GetTypeOfContent(PromiseFlatCString(aMIMEType), false);
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsIInterfaceRequestor
|
|
// We use a shim class to implement this so that JS consumers still
|
|
// see an interface requestor even though WebIDL bindings don't expose
|
|
// that stuff.
|
|
class ObjectInterfaceRequestorShim final : public nsIInterfaceRequestor,
|
|
public nsIChannelEventSink,
|
|
public nsIStreamListener {
|
|
public:
|
|
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
|
|
NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(ObjectInterfaceRequestorShim,
|
|
nsIInterfaceRequestor)
|
|
NS_DECL_NSIINTERFACEREQUESTOR
|
|
// RefPtr<nsObjectLoadingContent> fails due to ambiguous AddRef/Release,
|
|
// hence the ugly static cast :(
|
|
NS_FORWARD_NSICHANNELEVENTSINK(
|
|
static_cast<nsObjectLoadingContent*>(mContent.get())->)
|
|
NS_FORWARD_NSISTREAMLISTENER(
|
|
static_cast<nsObjectLoadingContent*>(mContent.get())->)
|
|
NS_FORWARD_NSIREQUESTOBSERVER(
|
|
static_cast<nsObjectLoadingContent*>(mContent.get())->)
|
|
|
|
explicit ObjectInterfaceRequestorShim(nsIObjectLoadingContent* aContent)
|
|
: mContent(aContent) {}
|
|
|
|
protected:
|
|
~ObjectInterfaceRequestorShim() = default;
|
|
nsCOMPtr<nsIObjectLoadingContent> mContent;
|
|
};
|
|
|
|
NS_IMPL_CYCLE_COLLECTION(ObjectInterfaceRequestorShim, mContent)
|
|
|
|
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ObjectInterfaceRequestorShim)
|
|
NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor)
|
|
NS_INTERFACE_MAP_ENTRY(nsIChannelEventSink)
|
|
NS_INTERFACE_MAP_ENTRY(nsIStreamListener)
|
|
NS_INTERFACE_MAP_ENTRY(nsIRequestObserver)
|
|
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIInterfaceRequestor)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTING_ADDREF(ObjectInterfaceRequestorShim)
|
|
NS_IMPL_CYCLE_COLLECTING_RELEASE(ObjectInterfaceRequestorShim)
|
|
|
|
NS_IMETHODIMP
|
|
ObjectInterfaceRequestorShim::GetInterface(const nsIID& aIID, void** aResult) {
|
|
if (aIID.Equals(NS_GET_IID(nsIChannelEventSink))) {
|
|
nsIChannelEventSink* sink = this;
|
|
*aResult = sink;
|
|
NS_ADDREF(sink);
|
|
return NS_OK;
|
|
}
|
|
return NS_NOINTERFACE;
|
|
}
|
|
|
|
// nsIChannelEventSink
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::AsyncOnChannelRedirect(
|
|
nsIChannel* aOldChannel, nsIChannel* aNewChannel, uint32_t aFlags,
|
|
nsIAsyncVerifyRedirectCallback* cb) {
|
|
// If we're already busy with a new load, or have no load at all,
|
|
// cancel the redirect.
|
|
if (!mChannel || aOldChannel != mChannel) {
|
|
return NS_BINDING_ABORTED;
|
|
}
|
|
|
|
mChannel = aNewChannel;
|
|
cb->OnRedirectVerifyCallback(NS_OK);
|
|
return NS_OK;
|
|
}
|
|
|
|
// <public>
|
|
EventStates nsObjectLoadingContent::ObjectState() const {
|
|
switch (mType) {
|
|
case eType_Loading:
|
|
return NS_EVENT_STATE_LOADING;
|
|
case eType_Image:
|
|
return ImageState();
|
|
case eType_Plugin:
|
|
case eType_FakePlugin:
|
|
case eType_Document:
|
|
// These are OK. If documents start to load successfully, they display
|
|
// something, and are thus not broken in this sense. The same goes for
|
|
// plugins.
|
|
return EventStates();
|
|
case eType_Null:
|
|
switch (mFallbackType) {
|
|
case eFallbackSuppressed:
|
|
return NS_EVENT_STATE_SUPPRESSED;
|
|
case eFallbackUserDisabled:
|
|
return NS_EVENT_STATE_USERDISABLED;
|
|
case eFallbackClickToPlay:
|
|
case eFallbackClickToPlayQuiet:
|
|
return NS_EVENT_STATE_TYPE_CLICK_TO_PLAY;
|
|
case eFallbackDisabled:
|
|
return NS_EVENT_STATE_BROKEN | NS_EVENT_STATE_HANDLER_DISABLED;
|
|
case eFallbackBlocklisted:
|
|
return NS_EVENT_STATE_BROKEN | NS_EVENT_STATE_HANDLER_BLOCKED;
|
|
case eFallbackCrashed:
|
|
return NS_EVENT_STATE_BROKEN | NS_EVENT_STATE_HANDLER_CRASHED;
|
|
case eFallbackUnsupported:
|
|
case eFallbackOutdated:
|
|
case eFallbackAlternate:
|
|
return NS_EVENT_STATE_BROKEN;
|
|
case eFallbackVulnerableUpdatable:
|
|
return NS_EVENT_STATE_VULNERABLE_UPDATABLE;
|
|
case eFallbackVulnerableNoUpdate:
|
|
return NS_EVENT_STATE_VULNERABLE_NO_UPDATE;
|
|
}
|
|
}
|
|
MOZ_ASSERT_UNREACHABLE("unknown type?");
|
|
return NS_EVENT_STATE_LOADING;
|
|
}
|
|
|
|
void nsObjectLoadingContent::MaybeRewriteYoutubeEmbed(nsIURI* aURI,
|
|
nsIURI* aBaseURI,
|
|
nsIURI** aOutURI) {
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
NS_ASSERTION(thisContent, "Must be an instance of content");
|
|
|
|
// We're only interested in switching out embed and object tags
|
|
if (!thisContent->NodeInfo()->Equals(nsGkAtoms::embed) &&
|
|
!thisContent->NodeInfo()->Equals(nsGkAtoms::object)) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIEffectiveTLDService> tldService =
|
|
do_GetService(NS_EFFECTIVETLDSERVICE_CONTRACTID);
|
|
// If we can't analyze the URL, just pass on through.
|
|
if (!tldService) {
|
|
NS_WARNING("Could not get TLD service!");
|
|
return;
|
|
}
|
|
|
|
nsAutoCString currentBaseDomain;
|
|
bool ok = NS_SUCCEEDED(tldService->GetBaseDomain(aURI, 0, currentBaseDomain));
|
|
if (!ok) {
|
|
// Data URIs (commonly used for things like svg embeds) won't parse
|
|
// correctly, so just fail silently here.
|
|
return;
|
|
}
|
|
|
|
// See if URL is referencing youtube
|
|
if (!currentBaseDomain.EqualsLiteral("youtube.com") &&
|
|
!currentBaseDomain.EqualsLiteral("youtube-nocookie.com")) {
|
|
return;
|
|
}
|
|
|
|
// We should only rewrite URLs with paths starting with "/v/", as we shouldn't
|
|
// touch object nodes with "/embed/" urls that already do that right thing.
|
|
nsAutoCString path;
|
|
aURI->GetPathQueryRef(path);
|
|
if (!StringBeginsWith(path, NS_LITERAL_CSTRING("/v/"))) {
|
|
return;
|
|
}
|
|
|
|
// See if requester is planning on using the JS API.
|
|
nsAutoCString uri;
|
|
nsresult rv = aURI->GetSpec(uri);
|
|
if (NS_FAILED(rv)) {
|
|
return;
|
|
}
|
|
|
|
// Some YouTube urls have parameters in path components, e.g.
|
|
// http://youtube.com/embed/7LcUOEP7Brc&start=35. These URLs work with flash,
|
|
// but break iframe/object embedding. If this situation occurs with rewritten
|
|
// URLs, convert the parameters to query in order to make the video load
|
|
// correctly as an iframe. In either case, warn about it in the
|
|
// developer console.
|
|
int32_t ampIndex = uri.FindChar('&', 0);
|
|
bool replaceQuery = false;
|
|
if (ampIndex != -1) {
|
|
int32_t qmIndex = uri.FindChar('?', 0);
|
|
if (qmIndex == -1 || qmIndex > ampIndex) {
|
|
replaceQuery = true;
|
|
}
|
|
}
|
|
|
|
// If we're pref'd off, return after telemetry has been logged.
|
|
if (!Preferences::GetBool(kPrefYoutubeRewrite)) {
|
|
return;
|
|
}
|
|
|
|
nsAutoString utf16OldURI = NS_ConvertUTF8toUTF16(uri);
|
|
// If we need to convert the URL, it means an ampersand comes first.
|
|
// Use the index we found earlier.
|
|
if (replaceQuery) {
|
|
// Replace question marks with ampersands.
|
|
uri.ReplaceChar('?', '&');
|
|
// Replace the first ampersand with a question mark.
|
|
uri.SetCharAt('?', ampIndex);
|
|
}
|
|
// Switch out video access url formats, which should possibly allow HTML5
|
|
// video loading.
|
|
uri.ReplaceSubstring(NS_LITERAL_CSTRING("/v/"),
|
|
NS_LITERAL_CSTRING("/embed/"));
|
|
nsAutoString utf16URI = NS_ConvertUTF8toUTF16(uri);
|
|
rv = nsContentUtils::NewURIWithDocumentCharset(
|
|
aOutURI, utf16URI, thisContent->OwnerDoc(), aBaseURI);
|
|
if (NS_FAILED(rv)) {
|
|
return;
|
|
}
|
|
AutoTArray<nsString, 2> params = {utf16OldURI, utf16URI};
|
|
const char* msgName;
|
|
// If there's no query to rewrite, just notify in the developer console
|
|
// that we're changing the embed.
|
|
if (!replaceQuery) {
|
|
msgName = "RewriteYouTubeEmbed";
|
|
} else {
|
|
msgName = "RewriteYouTubeEmbedPathParams";
|
|
}
|
|
nsContentUtils::ReportToConsole(
|
|
nsIScriptError::warningFlag, NS_LITERAL_CSTRING("Plugins"),
|
|
thisContent->OwnerDoc(), nsContentUtils::eDOM_PROPERTIES, msgName,
|
|
params);
|
|
}
|
|
|
|
bool nsObjectLoadingContent::CheckLoadPolicy(int16_t* aContentPolicy) {
|
|
if (!aContentPolicy || !mURI) {
|
|
MOZ_ASSERT_UNREACHABLE("Doing it wrong");
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
NS_ASSERTION(thisContent, "Must be an instance of content");
|
|
|
|
Document* doc = thisContent->OwnerDoc();
|
|
|
|
nsContentPolicyType contentPolicyType = GetContentPolicyType();
|
|
|
|
nsCOMPtr<nsILoadInfo> secCheckLoadInfo = new LoadInfo(
|
|
doc->NodePrincipal(), // loading principal
|
|
doc->NodePrincipal(), // triggering principal
|
|
thisContent, nsILoadInfo::SEC_ONLY_FOR_EXPLICIT_CONTENTSEC_CHECK,
|
|
contentPolicyType);
|
|
|
|
*aContentPolicy = nsIContentPolicy::ACCEPT;
|
|
nsresult rv = NS_CheckContentLoadPolicy(mURI, secCheckLoadInfo, mContentType,
|
|
aContentPolicy,
|
|
nsContentUtils::GetContentPolicy());
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
if (NS_CP_REJECTED(*aContentPolicy)) {
|
|
LOG(("OBJLC [%p]: Content policy denied load of %s", this,
|
|
mURI->GetSpecOrDefault().get()));
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool nsObjectLoadingContent::CheckProcessPolicy(int16_t* aContentPolicy) {
|
|
if (!aContentPolicy) {
|
|
MOZ_ASSERT_UNREACHABLE("Null out variable");
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
NS_ASSERTION(thisContent, "Must be an instance of content");
|
|
|
|
Document* doc = thisContent->OwnerDoc();
|
|
|
|
int32_t objectType;
|
|
switch (mType) {
|
|
case eType_Image:
|
|
objectType = nsIContentPolicy::TYPE_INTERNAL_IMAGE;
|
|
break;
|
|
case eType_Document:
|
|
objectType = nsIContentPolicy::TYPE_DOCUMENT;
|
|
break;
|
|
// FIXME Fake plugins look just like real plugins to CSP, should they use
|
|
// the fake plugin's handler URI and look like documents instead?
|
|
case eType_FakePlugin:
|
|
case eType_Plugin:
|
|
objectType = GetContentPolicyType();
|
|
break;
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE(
|
|
"Calling checkProcessPolicy with an unloadable "
|
|
"type");
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsILoadInfo> secCheckLoadInfo = new LoadInfo(
|
|
doc->NodePrincipal(), // loading principal
|
|
doc->NodePrincipal(), // triggering principal
|
|
thisContent, nsILoadInfo::SEC_ONLY_FOR_EXPLICIT_CONTENTSEC_CHECK,
|
|
objectType);
|
|
|
|
*aContentPolicy = nsIContentPolicy::ACCEPT;
|
|
nsresult rv = NS_CheckContentProcessPolicy(
|
|
mURI ? mURI : mBaseURI, secCheckLoadInfo, mContentType, aContentPolicy,
|
|
nsContentUtils::GetContentPolicy());
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
|
|
if (NS_CP_REJECTED(*aContentPolicy)) {
|
|
LOG(("OBJLC [%p]: CheckContentProcessPolicy rejected load", this));
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
nsObjectLoadingContent::ParameterUpdateFlags
|
|
nsObjectLoadingContent::UpdateObjectParameters() {
|
|
nsCOMPtr<Element> thisElement =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
MOZ_ASSERT(thisElement, "Must be an Element");
|
|
|
|
uint32_t caps = GetCapabilities();
|
|
LOG(("OBJLC [%p]: Updating object parameters", this));
|
|
|
|
nsresult rv;
|
|
nsAutoCString newMime;
|
|
nsAutoString typeAttr;
|
|
nsCOMPtr<nsIURI> newURI;
|
|
nsCOMPtr<nsIURI> newBaseURI;
|
|
ObjectType newType;
|
|
// Set if this state can't be used to load anything, forces eType_Null
|
|
bool stateInvalid = false;
|
|
// Indicates what parameters changed.
|
|
// eParamChannelChanged - means parameters that affect channel opening
|
|
// decisions changed
|
|
// eParamStateChanged - means anything that affects what content we load
|
|
// changed, even if the channel we'd open remains the
|
|
// same.
|
|
//
|
|
// State changes outside of the channel parameters only matter if we've
|
|
// already opened a channel or tried to instantiate content, whereas channel
|
|
// parameter changes require re-opening the channel even if we haven't gotten
|
|
// that far.
|
|
nsObjectLoadingContent::ParameterUpdateFlags retval = eParamNoChange;
|
|
|
|
///
|
|
/// Initial MIME Type
|
|
///
|
|
|
|
if (caps & eFallbackIfClassIDPresent) {
|
|
nsAutoString classIDAttr;
|
|
thisElement->GetAttr(kNameSpaceID_None, nsGkAtoms::classid, classIDAttr);
|
|
// We don't support class ID plugin references, so we should always treat
|
|
// having class Ids as attributes as invalid, and fallback accordingly.
|
|
if (!classIDAttr.IsEmpty()) {
|
|
newMime.Truncate();
|
|
stateInvalid = true;
|
|
}
|
|
}
|
|
|
|
///
|
|
/// Codebase
|
|
///
|
|
|
|
nsAutoString codebaseStr;
|
|
nsIURI* docBaseURI = thisElement->GetBaseURI();
|
|
thisElement->GetAttr(kNameSpaceID_None, nsGkAtoms::codebase, codebaseStr);
|
|
|
|
if (!codebaseStr.IsEmpty()) {
|
|
rv = nsContentUtils::NewURIWithDocumentCharset(
|
|
getter_AddRefs(newBaseURI), codebaseStr, thisElement->OwnerDoc(),
|
|
docBaseURI);
|
|
if (NS_FAILED(rv)) {
|
|
// Malformed URI
|
|
LOG(
|
|
("OBJLC [%p]: Could not parse plugin's codebase as a URI, "
|
|
"will use document baseURI instead",
|
|
this));
|
|
}
|
|
}
|
|
|
|
// If we failed to build a valid URI, use the document's base URI
|
|
if (!newBaseURI) {
|
|
newBaseURI = docBaseURI;
|
|
}
|
|
|
|
nsAutoString rawTypeAttr;
|
|
thisElement->GetAttr(kNameSpaceID_None, nsGkAtoms::type, rawTypeAttr);
|
|
if (!rawTypeAttr.IsEmpty()) {
|
|
typeAttr = rawTypeAttr;
|
|
nsAutoString params;
|
|
nsAutoString mime;
|
|
nsContentUtils::SplitMimeType(rawTypeAttr, mime, params);
|
|
CopyUTF16toUTF8(mime, newMime);
|
|
}
|
|
|
|
///
|
|
/// URI
|
|
///
|
|
|
|
nsAutoString uriStr;
|
|
// Different elements keep this in various locations
|
|
if (thisElement->NodeInfo()->Equals(nsGkAtoms::object)) {
|
|
thisElement->GetAttr(kNameSpaceID_None, nsGkAtoms::data, uriStr);
|
|
} else if (thisElement->NodeInfo()->Equals(nsGkAtoms::embed)) {
|
|
thisElement->GetAttr(kNameSpaceID_None, nsGkAtoms::src, uriStr);
|
|
} else {
|
|
MOZ_ASSERT_UNREACHABLE("Unrecognized plugin-loading tag");
|
|
}
|
|
|
|
mRewrittenYoutubeEmbed = false;
|
|
// Note that the baseURI changing could affect the newURI, even if uriStr did
|
|
// not change.
|
|
if (!uriStr.IsEmpty()) {
|
|
rv = nsContentUtils::NewURIWithDocumentCharset(
|
|
getter_AddRefs(newURI), uriStr, thisElement->OwnerDoc(), newBaseURI);
|
|
nsCOMPtr<nsIURI> rewrittenURI;
|
|
MaybeRewriteYoutubeEmbed(newURI, newBaseURI, getter_AddRefs(rewrittenURI));
|
|
if (rewrittenURI) {
|
|
newURI = rewrittenURI;
|
|
mRewrittenYoutubeEmbed = true;
|
|
newMime = NS_LITERAL_CSTRING("text/html");
|
|
}
|
|
|
|
if (NS_FAILED(rv)) {
|
|
stateInvalid = true;
|
|
}
|
|
}
|
|
|
|
// For eAllowPluginSkipChannel tags, if we have a non-plugin type, but can get
|
|
// a plugin type from the extension, prefer that to falling back to a channel.
|
|
if (!IsPluginType(GetTypeOfContent(newMime, mSkipFakePlugins)) && newURI &&
|
|
(caps & eAllowPluginSkipChannel) &&
|
|
IsPluginEnabledByExtension(newURI, newMime)) {
|
|
LOG(("OBJLC [%p]: Using extension as type hint (%s)", this, newMime.get()));
|
|
}
|
|
|
|
///
|
|
/// Check if the original (pre-channel) content-type or URI changed, and
|
|
/// record mOriginal{ContentType,URI}
|
|
///
|
|
|
|
if ((mOriginalContentType != newMime) || !URIEquals(mOriginalURI, newURI)) {
|
|
// These parameters changing requires re-opening the channel, so don't
|
|
// consider the currently-open channel below
|
|
// XXX(johns): Changing the mime type might change our decision on whether
|
|
// or not we load a channel, so we count changes to it as a
|
|
// channel parameter change for the sake of simplicity.
|
|
retval = (ParameterUpdateFlags)(retval | eParamChannelChanged);
|
|
LOG(("OBJLC [%p]: Channel parameters changed", this));
|
|
}
|
|
mOriginalContentType = newMime;
|
|
mOriginalURI = newURI;
|
|
|
|
///
|
|
/// If we have a channel, see if its MIME type should take precendence and
|
|
/// check the final (redirected) URL
|
|
///
|
|
|
|
// If we have a loaded channel and channel parameters did not change, use it
|
|
// to determine what we would load.
|
|
bool useChannel = mChannelLoaded && !(retval & eParamChannelChanged);
|
|
// If we have a channel and are type loading, as opposed to having an existing
|
|
// channel for a previous load.
|
|
bool newChannel = useChannel && mType == eType_Loading;
|
|
|
|
if (newChannel && mChannel) {
|
|
nsCString channelType;
|
|
rv = mChannel->GetContentType(channelType);
|
|
if (NS_FAILED(rv)) {
|
|
MOZ_ASSERT_UNREACHABLE("GetContentType failed");
|
|
stateInvalid = true;
|
|
channelType.Truncate();
|
|
}
|
|
|
|
LOG(("OBJLC [%p]: Channel has a content type of %s", this,
|
|
channelType.get()));
|
|
|
|
bool binaryChannelType = false;
|
|
if (channelType.EqualsASCII(APPLICATION_GUESS_FROM_EXT)) {
|
|
channelType = APPLICATION_OCTET_STREAM;
|
|
mChannel->SetContentType(channelType);
|
|
binaryChannelType = true;
|
|
} else if (channelType.EqualsASCII(APPLICATION_OCTET_STREAM) ||
|
|
channelType.EqualsASCII(BINARY_OCTET_STREAM)) {
|
|
binaryChannelType = true;
|
|
}
|
|
|
|
// Channel can change our URI through redirection
|
|
rv = NS_GetFinalChannelURI(mChannel, getter_AddRefs(newURI));
|
|
if (NS_FAILED(rv)) {
|
|
MOZ_ASSERT_UNREACHABLE("NS_GetFinalChannelURI failure");
|
|
stateInvalid = true;
|
|
}
|
|
|
|
ObjectType typeHint = newMime.IsEmpty()
|
|
? eType_Null
|
|
: GetTypeOfContent(newMime, mSkipFakePlugins);
|
|
|
|
//
|
|
// In order of preference:
|
|
//
|
|
// 1) Use our type hint if it matches a plugin
|
|
// 2) If we have eAllowPluginSkipChannel, use the uri file extension if
|
|
// it matches a plugin
|
|
// 3) If the channel returns a binary stream type:
|
|
// 3a) If we have a type non-null non-document type hint, use that
|
|
// 3b) If the uri file extension matches a plugin type, use that
|
|
// 4) Use the channel type
|
|
|
|
bool overrideChannelType = false;
|
|
if (IsPluginType(typeHint)) {
|
|
LOG(("OBJLC [%p]: Using plugin type hint in favor of any channel type",
|
|
this));
|
|
overrideChannelType = true;
|
|
} else if ((caps & eAllowPluginSkipChannel) &&
|
|
IsPluginEnabledByExtension(newURI, newMime)) {
|
|
LOG(
|
|
("OBJLC [%p]: Using extension as type hint for "
|
|
"eAllowPluginSkipChannel tag (%s)",
|
|
this, newMime.get()));
|
|
overrideChannelType = true;
|
|
} else if (binaryChannelType && typeHint != eType_Null &&
|
|
typeHint != eType_Document) {
|
|
LOG(("OBJLC [%p]: Using type hint in favor of binary channel type",
|
|
this));
|
|
overrideChannelType = true;
|
|
} else if (binaryChannelType &&
|
|
IsPluginEnabledByExtension(newURI, newMime)) {
|
|
LOG(("OBJLC [%p]: Using extension as type hint for binary channel (%s)",
|
|
this, newMime.get()));
|
|
overrideChannelType = true;
|
|
}
|
|
|
|
if (overrideChannelType) {
|
|
// Set the type we'll use for dispatch on the channel. Otherwise we could
|
|
// end up trying to dispatch to a nsFrameLoader, which will complain that
|
|
// it couldn't find a way to handle application/octet-stream
|
|
nsAutoCString parsedMime, dummy;
|
|
NS_ParseResponseContentType(newMime, parsedMime, dummy);
|
|
if (!parsedMime.IsEmpty()) {
|
|
mChannel->SetContentType(parsedMime);
|
|
}
|
|
} else {
|
|
newMime = channelType;
|
|
}
|
|
} else if (newChannel) {
|
|
LOG(("OBJLC [%p]: We failed to open a channel, marking invalid", this));
|
|
stateInvalid = true;
|
|
}
|
|
|
|
///
|
|
/// Determine final type
|
|
///
|
|
// In order of preference:
|
|
// 1) If we have attempted channel load, or set stateInvalid above, the type
|
|
// is always null (fallback)
|
|
// 2) If we have a loaded channel, we grabbed its mimeType above, use that
|
|
// type.
|
|
// 3) If we have a plugin type and no URI, use that type.
|
|
// 4) If we have a plugin type and eAllowPluginSkipChannel, use that type.
|
|
// 5) if we have a URI, set type to loading to indicate we'd need a channel
|
|
// to proceed.
|
|
// 6) Otherwise, type null to indicate unloadable content (fallback)
|
|
//
|
|
|
|
ObjectType newMime_Type = GetTypeOfContent(newMime, mSkipFakePlugins);
|
|
|
|
if (stateInvalid) {
|
|
newType = eType_Null;
|
|
newMime.Truncate();
|
|
} else if (newChannel) {
|
|
// If newChannel is set above, we considered it in setting newMime
|
|
newType = newMime_Type;
|
|
LOG(("OBJLC [%p]: Using channel type", this));
|
|
} else if (((caps & eAllowPluginSkipChannel) || !newURI) &&
|
|
IsPluginType(newMime_Type)) {
|
|
newType = newMime_Type;
|
|
LOG(("OBJLC [%p]: Plugin type with no URI, skipping channel load", this));
|
|
} else if (newURI &&
|
|
(mOriginalContentType.IsEmpty() || newMime_Type != eType_Null)) {
|
|
// We could potentially load this if we opened a channel on mURI, indicate
|
|
// this by leaving type as loading.
|
|
//
|
|
// If a MIME type was requested in the tag, but we have decided to set load
|
|
// type to null, ignore (otherwise we'll default to document type loading).
|
|
newType = eType_Loading;
|
|
} else {
|
|
// Unloadable - no URI, and no plugin/MIME type. Non-plugin types (images,
|
|
// documents) always load with a channel.
|
|
newType = eType_Null;
|
|
}
|
|
|
|
///
|
|
/// Handle existing channels
|
|
///
|
|
|
|
if (useChannel && newType == eType_Loading) {
|
|
// We decided to use a channel, and also that the previous channel is still
|
|
// usable, so re-use the existing values.
|
|
newType = mType;
|
|
newMime = mContentType;
|
|
newURI = mURI;
|
|
} else if (useChannel && !newChannel) {
|
|
// We have an existing channel, but did not decide to use one.
|
|
retval = (ParameterUpdateFlags)(retval | eParamChannelChanged);
|
|
useChannel = false;
|
|
}
|
|
|
|
///
|
|
/// Update changed values
|
|
///
|
|
|
|
if (newType != mType) {
|
|
retval = (ParameterUpdateFlags)(retval | eParamStateChanged);
|
|
LOG(("OBJLC [%p]: Type changed from %u -> %u", this, mType, newType));
|
|
bool updateIMEState = (mType == eType_Loading && newType == eType_Plugin);
|
|
mType = newType;
|
|
// The IME manager needs to know if this is a plugin so it can adjust
|
|
// input handling to an appropriate mode for plugins.
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
MOZ_ASSERT(thisContent, "should have content");
|
|
if (updateIMEState && thisContent && fm && fm->IsFocused(thisContent)) {
|
|
widget::IMEState state;
|
|
state.mEnabled = widget::IMEState::PLUGIN;
|
|
state.mOpen = widget::IMEState::DONT_CHANGE_OPEN_STATE;
|
|
IMEStateManager::UpdateIMEState(state, thisContent, nullptr);
|
|
}
|
|
}
|
|
|
|
if (!URIEquals(mBaseURI, newBaseURI)) {
|
|
LOG(("OBJLC [%p]: Object effective baseURI changed", this));
|
|
mBaseURI = newBaseURI;
|
|
}
|
|
|
|
if (!URIEquals(newURI, mURI)) {
|
|
retval = (ParameterUpdateFlags)(retval | eParamStateChanged);
|
|
LOG(("OBJLC [%p]: Object effective URI changed", this));
|
|
mURI = newURI;
|
|
}
|
|
|
|
// We don't update content type when loading, as the type is not final and we
|
|
// don't want to superfluously change between mOriginalContentType ->
|
|
// mContentType when doing |obj.data = obj.data| with a channel and differing
|
|
// type.
|
|
if (mType != eType_Loading && mContentType != newMime) {
|
|
retval = (ParameterUpdateFlags)(retval | eParamStateChanged);
|
|
retval = (ParameterUpdateFlags)(retval | eParamContentTypeChanged);
|
|
LOG(("OBJLC [%p]: Object effective mime type changed (%s -> %s)", this,
|
|
mContentType.get(), newMime.get()));
|
|
mContentType = newMime;
|
|
}
|
|
|
|
// If we decided to keep using info from an old channel, but also that state
|
|
// changed, we need to invalidate it.
|
|
if (useChannel && !newChannel && (retval & eParamStateChanged)) {
|
|
mType = eType_Loading;
|
|
retval = (ParameterUpdateFlags)(retval | eParamChannelChanged);
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
// Used by PluginDocument to kick off our initial load from the already-opened
|
|
// channel.
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::InitializeFromChannel(nsIRequest* aChannel) {
|
|
LOG(("OBJLC [%p] InitializeFromChannel: %p", this, aChannel));
|
|
if (mType != eType_Loading || mChannel) {
|
|
// We could technically call UnloadObject() here, if consumers have a valid
|
|
// reason for wanting to call this on an already-loaded tag.
|
|
MOZ_ASSERT_UNREACHABLE("Should not have begun loading at this point");
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
// Because we didn't open this channel from an initial LoadObject, we'll
|
|
// update our parameters now, so the OnStartRequest->LoadObject doesn't
|
|
// believe our src/type suddenly changed.
|
|
UpdateObjectParameters();
|
|
// But we always want to load from a channel, in this case.
|
|
mType = eType_Loading;
|
|
mChannel = do_QueryInterface(aChannel);
|
|
NS_ASSERTION(mChannel, "passed a request that is not a channel");
|
|
|
|
// OnStartRequest will now see we have a channel in the loading state, and
|
|
// call into LoadObject. There's a possibility LoadObject will decide not to
|
|
// load anything from a channel - it will call CloseChannel() in that case.
|
|
return NS_OK;
|
|
}
|
|
|
|
// Only OnStartRequest should be passing the channel parameter
|
|
nsresult nsObjectLoadingContent::LoadObject(bool aNotify, bool aForceLoad) {
|
|
return LoadObject(aNotify, aForceLoad, nullptr);
|
|
}
|
|
|
|
nsresult nsObjectLoadingContent::LoadObject(bool aNotify, bool aForceLoad,
|
|
nsIRequest* aLoadingChannel) {
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
NS_ASSERTION(thisContent, "must be a content");
|
|
Document* doc = thisContent->OwnerDoc();
|
|
nsresult rv = NS_OK;
|
|
|
|
// Per bug 1318303, if the parent document is not active, load the alternative
|
|
// and return.
|
|
if (!doc->IsCurrentActiveDocument()) {
|
|
// Since this can be triggered on change of attributes, make sure we've
|
|
// unloaded whatever is loaded first.
|
|
UnloadObject();
|
|
LoadFallback(eFallbackAlternate, false);
|
|
return NS_OK;
|
|
}
|
|
|
|
// XXX(johns): In these cases, we refuse to touch our content and just
|
|
// remain unloaded, as per legacy behavior. It would make more sense to
|
|
// load fallback content initially and refuse to ever change state again.
|
|
if (doc->IsBeingUsedAsImage() || doc->IsLoadedAsData()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
LOG(("OBJLC [%p]: LoadObject called, notify %u, forceload %u, channel %p",
|
|
this, aNotify, aForceLoad, aLoadingChannel));
|
|
|
|
// We can't re-use an already open channel, but aForceLoad may make us try
|
|
// to load a plugin without any changes in channel state.
|
|
if (aForceLoad && mChannelLoaded) {
|
|
CloseChannel();
|
|
mChannelLoaded = false;
|
|
}
|
|
|
|
// Save these for NotifyStateChanged();
|
|
EventStates oldState = ObjectState();
|
|
ObjectType oldType = mType;
|
|
|
|
ParameterUpdateFlags stateChange = UpdateObjectParameters();
|
|
|
|
if (!stateChange && !aForceLoad) {
|
|
return NS_OK;
|
|
}
|
|
|
|
///
|
|
/// State has changed, unload existing content and attempt to load new type
|
|
///
|
|
LOG(("OBJLC [%p]: LoadObject - plugin state changed (%u)", this,
|
|
stateChange));
|
|
|
|
// Setup fallback info. We may also change type to fallback below in case of
|
|
// sanity/OOM/etc. errors. We default to showing alternate content
|
|
// NOTE LoadFallback can override this in some cases
|
|
FallbackType fallbackType = eFallbackAlternate;
|
|
|
|
// If GetTypeOfContent(mContentType) is null we truly have no handler for the
|
|
// type -- otherwise, we have a handler but UpdateObjectParameters rejected
|
|
// the configuration for another reason (e.g. an embed tag with type
|
|
// "image/png" but no URI). Don't show a plugin error or unknown type error in
|
|
// the latter case.
|
|
if (mType == eType_Null &&
|
|
GetTypeOfContent(mContentType, mSkipFakePlugins) == eType_Null) {
|
|
fallbackType = eFallbackUnsupported;
|
|
}
|
|
|
|
// Explicit user activation should reset if the object changes content types
|
|
if (mActivated && (stateChange & eParamContentTypeChanged)) {
|
|
LOG(("OBJLC [%p]: Content type changed, clearing activation state", this));
|
|
mActivated = false;
|
|
}
|
|
|
|
// We synchronously start/stop plugin instances below, which may spin the
|
|
// event loop. Re-entering into the load is fine, but at that point the
|
|
// original load call needs to abort when unwinding
|
|
// NOTE this is located *after* the state change check, a subsequent load
|
|
// with no subsequently changed state will be a no-op.
|
|
if (mIsLoading) {
|
|
LOG(("OBJLC [%p]: Re-entering into LoadObject", this));
|
|
}
|
|
mIsLoading = true;
|
|
AutoSetLoadingToFalse reentryCheck(this);
|
|
|
|
// Unload existing content, keeping in mind stopping plugins might spin the
|
|
// event loop. Note that we check for still-open channels below
|
|
UnloadObject(false); // Don't reset state
|
|
if (!mIsLoading) {
|
|
// The event loop must've spun and re-entered into LoadObject, which
|
|
// finished the load
|
|
LOG(("OBJLC [%p]: Re-entered into LoadObject, aborting outer load", this));
|
|
return NS_OK;
|
|
}
|
|
|
|
// Determine what's going on with our channel.
|
|
if (stateChange & eParamChannelChanged) {
|
|
// If the channel params changed, throw away the channel, but unset
|
|
// mChannelLoaded so we'll still try to open a new one for this load if
|
|
// necessary
|
|
CloseChannel();
|
|
mChannelLoaded = false;
|
|
} else if (mType == eType_Null && mChannel) {
|
|
// If we opened a channel but then failed to find a loadable state, throw it
|
|
// away. mChannelLoaded will indicate that we tried to load a channel at one
|
|
// point so we wont recurse
|
|
CloseChannel();
|
|
} else if (mType == eType_Loading && mChannel) {
|
|
// We're still waiting on a channel load, already opened one, and
|
|
// channel parameters didn't change
|
|
return NS_OK;
|
|
} else if (mChannelLoaded && mChannel != aLoadingChannel) {
|
|
// The only time we should have a loaded channel with a changed state is
|
|
// when the channel has just opened -- in which case this call should
|
|
// have originated from OnStartRequest
|
|
MOZ_ASSERT_UNREACHABLE(
|
|
"Loading with a channel, but state doesn't make sense");
|
|
return NS_OK;
|
|
}
|
|
|
|
//
|
|
// Security checks
|
|
//
|
|
|
|
if (mType != eType_Null) {
|
|
bool allowLoad = true;
|
|
int16_t contentPolicy = nsIContentPolicy::ACCEPT;
|
|
// If mChannelLoaded is set we presumably already passed load policy
|
|
// If mType == eType_Loading then we call OpenChannel() which internally
|
|
// creates a new channel and calls asyncOpen() on that channel which
|
|
// then enforces content policy checks.
|
|
if (allowLoad && mURI && !mChannelLoaded && mType != eType_Loading) {
|
|
allowLoad = CheckLoadPolicy(&contentPolicy);
|
|
}
|
|
// If we're loading a type now, check ProcessPolicy. Note that we may check
|
|
// both now in the case of plugins whose type is determined before opening a
|
|
// channel.
|
|
if (allowLoad && mType != eType_Loading) {
|
|
allowLoad = CheckProcessPolicy(&contentPolicy);
|
|
}
|
|
|
|
// Content policy implementations can mutate the DOM, check for re-entry
|
|
if (!mIsLoading) {
|
|
LOG(("OBJLC [%p]: We re-entered in content policy, leaving original load",
|
|
this));
|
|
return NS_OK;
|
|
}
|
|
|
|
// Load denied, switch to fallback and set disabled/suppressed if applicable
|
|
if (!allowLoad) {
|
|
LOG(("OBJLC [%p]: Load denied by policy", this));
|
|
mType = eType_Null;
|
|
if (contentPolicy == nsIContentPolicy::REJECT_TYPE) {
|
|
// XXX(johns) This is assuming that we were rejected by
|
|
// nsContentBlocker, which rejects by type if permissions
|
|
// reject plugins
|
|
fallbackType = eFallbackUserDisabled;
|
|
} else {
|
|
fallbackType = eFallbackSuppressed;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Don't allow view-source scheme.
|
|
// view-source is the only scheme to which this applies at the moment due to
|
|
// potential timing attacks to read data from cross-origin documents. If this
|
|
// widens we should add a protocol flag for whether the scheme is only allowed
|
|
// in top and use something like nsNetUtil::NS_URIChainHasFlags.
|
|
if (mType != eType_Null) {
|
|
nsCOMPtr<nsIURI> tempURI = mURI;
|
|
nsCOMPtr<nsINestedURI> nestedURI = do_QueryInterface(tempURI);
|
|
while (nestedURI) {
|
|
// view-source should always be an nsINestedURI, loop and check the
|
|
// scheme on this and all inner URIs that are also nested URIs.
|
|
if (tempURI->SchemeIs("view-source")) {
|
|
LOG(("OBJLC [%p]: Blocking as effective URI has view-source scheme",
|
|
this));
|
|
mType = eType_Null;
|
|
break;
|
|
}
|
|
|
|
nestedURI->GetInnerURI(getter_AddRefs(tempURI));
|
|
nestedURI = do_QueryInterface(tempURI);
|
|
}
|
|
}
|
|
|
|
// Items resolved as Image/Document are no candidates for content blocking,
|
|
// as well as invalid plugins (they will not have the mContentType set).
|
|
if ((mType == eType_Null || IsPluginType(mType)) && ShouldBlockContent()) {
|
|
LOG(("OBJLC [%p]: Enable content blocking", this));
|
|
mType = eType_Loading;
|
|
}
|
|
|
|
// If we're a plugin but shouldn't start yet, load fallback with
|
|
// reason click-to-play instead. Items resolved as Image/Document
|
|
// will not be checked for previews, as well as invalid plugins
|
|
// (they will not have the mContentType set).
|
|
FallbackType clickToPlayReason;
|
|
if (!mActivated && IsPluginType(mType) && !ShouldPlay(clickToPlayReason)) {
|
|
LOG(("OBJLC [%p]: Marking plugin as click-to-play", this));
|
|
mType = eType_Null;
|
|
fallbackType = clickToPlayReason;
|
|
}
|
|
|
|
if (!mActivated && IsPluginType(mType)) {
|
|
// Object passed ShouldPlay, so it should be considered
|
|
// activated until it changes content type
|
|
LOG(("OBJLC [%p]: Object implicitly activated", this));
|
|
mActivated = true;
|
|
}
|
|
|
|
// Sanity check: We shouldn't have any loaded resources, pending events, or
|
|
// a final listener at this point
|
|
if (mFrameLoader || mPendingInstantiateEvent || mInstanceOwner ||
|
|
mPendingCheckPluginStopEvent || mFinalListener) {
|
|
MOZ_ASSERT_UNREACHABLE("Trying to load new plugin with existing content");
|
|
return NS_OK;
|
|
}
|
|
|
|
// More sanity-checking:
|
|
// If mChannel is set, mChannelLoaded should be set, and vice-versa
|
|
if (mType != eType_Null && !!mChannel != mChannelLoaded) {
|
|
MOZ_ASSERT_UNREACHABLE("Trying to load with bad channel state");
|
|
return NS_OK;
|
|
}
|
|
|
|
///
|
|
/// Attempt to load new type
|
|
///
|
|
|
|
// Cache the current attributes and parameters.
|
|
if (mType == eType_Plugin || mType == eType_Null) {
|
|
rv = BuildParametersArray();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
// We don't set mFinalListener until OnStartRequest has been called, to
|
|
// prevent re-entry ugliness with CloseChannel()
|
|
nsCOMPtr<nsIStreamListener> finalListener;
|
|
// If we decide to synchronously spawn a plugin, we do it after firing
|
|
// notifications to avoid re-entry causing notifications to fire out of order.
|
|
bool doSpawnPlugin = false;
|
|
switch (mType) {
|
|
case eType_Image:
|
|
if (!mChannel) {
|
|
// We have a LoadImage() call, but UpdateObjectParameters requires a
|
|
// channel for images, so this is not a valid state.
|
|
MOZ_ASSERT_UNREACHABLE("Attempting to load image without a channel?");
|
|
rv = NS_ERROR_UNEXPECTED;
|
|
break;
|
|
}
|
|
rv = LoadImageWithChannel(mChannel, getter_AddRefs(finalListener));
|
|
// finalListener will receive OnStartRequest below
|
|
break;
|
|
case eType_Plugin: {
|
|
if (mChannel) {
|
|
// Force a sync state change now, we need the frame created
|
|
NotifyStateChanged(oldType, oldState, true, aNotify);
|
|
oldType = mType;
|
|
oldState = ObjectState();
|
|
|
|
if (!thisContent->GetPrimaryFrame()) {
|
|
// We're un-rendered, and can't instantiate a plugin. HasNewFrame will
|
|
// re-start us when we can proceed.
|
|
LOG(("OBJLC [%p]: Aborting load - plugin-type, but no frame", this));
|
|
CloseChannel();
|
|
break;
|
|
}
|
|
|
|
// We'll handle this below
|
|
doSpawnPlugin = true;
|
|
} else {
|
|
rv = AsyncStartPluginInstance();
|
|
}
|
|
} break;
|
|
case eType_Document: {
|
|
if (!mChannel) {
|
|
// We could mFrameLoader->LoadURI(mURI), but UpdateObjectParameters
|
|
// requires documents have a channel, so this is not a valid state.
|
|
MOZ_ASSERT_UNREACHABLE(
|
|
"Attempting to load a document without a "
|
|
"channel");
|
|
rv = NS_ERROR_FAILURE;
|
|
break;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShell> docShell = SetupDocShell(mURI);
|
|
if (!docShell) {
|
|
rv = NS_ERROR_FAILURE;
|
|
break;
|
|
}
|
|
|
|
// We're loading a document, so we have to set LOAD_DOCUMENT_URI
|
|
// (especially important for firing onload)
|
|
nsLoadFlags flags = 0;
|
|
mChannel->GetLoadFlags(&flags);
|
|
flags |= nsIChannel::LOAD_DOCUMENT_URI;
|
|
mChannel->SetLoadFlags(flags);
|
|
|
|
nsCOMPtr<nsIInterfaceRequestor> req(do_QueryInterface(docShell));
|
|
NS_ASSERTION(req, "Docshell must be an ifreq");
|
|
|
|
nsCOMPtr<nsIURILoader> uriLoader(components::URILoader::Service());
|
|
if (NS_WARN_IF(!uriLoader)) {
|
|
MOZ_ASSERT_UNREACHABLE("Failed to get uriLoader service");
|
|
mFrameLoader->Destroy();
|
|
mFrameLoader = nullptr;
|
|
break;
|
|
}
|
|
|
|
rv = uriLoader->OpenChannel(mChannel, nsIURILoader::DONT_RETARGET, req,
|
|
getter_AddRefs(finalListener));
|
|
// finalListener will receive OnStartRequest below
|
|
} break;
|
|
case eType_Loading:
|
|
// If our type remains Loading, we need a channel to proceed
|
|
rv = OpenChannel();
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("OBJLC [%p]: OpenChannel returned failure (%" PRIu32 ")", this,
|
|
static_cast<uint32_t>(rv)));
|
|
}
|
|
break;
|
|
case eType_Null:
|
|
// Handled below, silence compiler warnings
|
|
break;
|
|
case eType_FakePlugin:
|
|
// We're now in the process of removing FakePlugin. See bug 1529133.
|
|
MOZ_CRASH(
|
|
"Shouldn't reach here! This means there's a fakeplugin trying to be "
|
|
"loaded.");
|
|
}
|
|
|
|
//
|
|
// Loaded, handle notifications and fallback
|
|
//
|
|
if (NS_FAILED(rv)) {
|
|
// If we failed in the loading hunk above, switch to fallback
|
|
LOG(("OBJLC [%p]: Loading failed, switching to fallback", this));
|
|
mType = eType_Null;
|
|
}
|
|
|
|
// If we didn't load anything, handle switching to fallback state
|
|
if (mType == eType_Null) {
|
|
LOG(("OBJLC [%p]: Loading fallback, type %u", this, fallbackType));
|
|
NS_ASSERTION(!mFrameLoader && !mInstanceOwner,
|
|
"switched to type null but also loaded something");
|
|
|
|
// Don't fire error events if we're falling back to click-to-play; instead
|
|
// pretend like this is a really slow-loading plug-in instead.
|
|
if (fallbackType != eFallbackClickToPlay &&
|
|
fallbackType != eFallbackClickToPlayQuiet) {
|
|
MaybeFireErrorEvent();
|
|
}
|
|
|
|
if (mChannel) {
|
|
// If we were loading with a channel but then failed over, throw it away
|
|
CloseChannel();
|
|
}
|
|
|
|
// Don't try to initialize plugins or final listener below
|
|
doSpawnPlugin = false;
|
|
finalListener = nullptr;
|
|
|
|
// Don't notify, as LoadFallback doesn't know of our previous state
|
|
// (so really this is just setting mFallbackType)
|
|
LoadFallback(fallbackType, false);
|
|
}
|
|
|
|
// Notify of our final state
|
|
NotifyStateChanged(oldType, oldState, false, aNotify);
|
|
NS_ENSURE_TRUE(mIsLoading, NS_OK);
|
|
|
|
//
|
|
// Spawning plugins and dispatching to the final listener may re-enter, so are
|
|
// delayed until after we fire a notification, to prevent missing
|
|
// notifications or firing them out of order.
|
|
//
|
|
// Note that we ensured that we entered into LoadObject() from
|
|
// ::OnStartRequest above when loading with a channel.
|
|
//
|
|
|
|
rv = NS_OK;
|
|
if (doSpawnPlugin) {
|
|
rv = InstantiatePluginInstance(true);
|
|
NS_ENSURE_TRUE(mIsLoading, NS_OK);
|
|
// Create the final listener if we're loading with a channel. We can't do
|
|
// this in the loading block above as it requires an instance.
|
|
if (aLoadingChannel && NS_SUCCEEDED(rv)) {
|
|
if (NS_SUCCEEDED(rv) && MakePluginListener()) {
|
|
rv = mFinalListener->OnStartRequest(mChannel);
|
|
if (NS_FAILED(rv)) {
|
|
// Plugins can reject their initial stream, but continue to run.
|
|
CloseChannel();
|
|
NS_ENSURE_TRUE(mIsLoading, NS_OK);
|
|
rv = NS_OK;
|
|
}
|
|
}
|
|
}
|
|
} else if (finalListener) {
|
|
NS_ASSERTION(mType != eType_Null && mType != eType_Loading,
|
|
"We should not have a final listener with a non-loaded type");
|
|
mFinalListener = finalListener;
|
|
rv = finalListener->OnStartRequest(mChannel);
|
|
}
|
|
|
|
if (NS_FAILED(rv) && mIsLoading) {
|
|
// Since we've already notified of our transition, we can just Unload and
|
|
// call LoadFallback (which will notify again)
|
|
mType = eType_Null;
|
|
UnloadObject(false);
|
|
NS_ENSURE_TRUE(mIsLoading, NS_OK);
|
|
CloseChannel();
|
|
LoadFallback(fallbackType, true);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// This call can re-enter when dealing with plugin listeners
|
|
nsresult nsObjectLoadingContent::CloseChannel() {
|
|
if (mChannel) {
|
|
LOG(("OBJLC [%p]: Closing channel\n", this));
|
|
// Null the values before potentially-reentering, and ensure they survive
|
|
// the call
|
|
nsCOMPtr<nsIChannel> channelGrip(mChannel);
|
|
nsCOMPtr<nsIStreamListener> listenerGrip(mFinalListener);
|
|
mChannel = nullptr;
|
|
mFinalListener = nullptr;
|
|
channelGrip->Cancel(NS_BINDING_ABORTED);
|
|
if (listenerGrip) {
|
|
// mFinalListener is only set by LoadObject after OnStartRequest, or
|
|
// by OnStartRequest in the case of late-opened plugin streams
|
|
listenerGrip->OnStopRequest(channelGrip, NS_BINDING_ABORTED);
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsObjectLoadingContent::OpenChannel() {
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
NS_ASSERTION(thisContent, "must be a content");
|
|
Document* doc = thisContent->OwnerDoc();
|
|
NS_ASSERTION(doc, "No owner document?");
|
|
|
|
nsresult rv;
|
|
mChannel = nullptr;
|
|
|
|
// E.g. mms://
|
|
if (!mURI || !CanHandleURI(mURI)) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
nsCOMPtr<nsILoadGroup> group = doc->GetDocumentLoadGroup();
|
|
nsCOMPtr<nsIChannel> chan;
|
|
RefPtr<ObjectInterfaceRequestorShim> shim =
|
|
new ObjectInterfaceRequestorShim(this);
|
|
|
|
bool isSandBoxed = doc->GetSandboxFlags() & SANDBOXED_ORIGIN;
|
|
bool inherit = nsContentUtils::ChannelShouldInheritPrincipal(
|
|
thisContent->NodePrincipal(), mURI,
|
|
true, // aInheritForAboutBlank
|
|
false); // aForceInherit
|
|
nsSecurityFlags securityFlags =
|
|
nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL;
|
|
|
|
bool isURIUniqueOrigin =
|
|
nsIOService::IsDataURIUniqueOpaqueOrigin() && mURI->SchemeIs("data");
|
|
|
|
if (inherit && !isURIUniqueOrigin) {
|
|
securityFlags |= nsILoadInfo::SEC_FORCE_INHERIT_PRINCIPAL;
|
|
}
|
|
if (isSandBoxed) {
|
|
securityFlags |= nsILoadInfo::SEC_SANDBOXED;
|
|
}
|
|
|
|
nsContentPolicyType contentPolicyType = GetContentPolicyType();
|
|
|
|
rv = NS_NewChannel(getter_AddRefs(chan), mURI, thisContent, securityFlags,
|
|
contentPolicyType,
|
|
nullptr, // aPerformanceStorage
|
|
group, // aLoadGroup
|
|
shim, // aCallbacks
|
|
nsIChannel::LOAD_CALL_CONTENT_SNIFFERS |
|
|
nsIChannel::LOAD_BYPASS_SERVICE_WORKER |
|
|
nsIRequest::LOAD_HTML_OBJECT_DATA);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (inherit) {
|
|
nsCOMPtr<nsILoadInfo> loadinfo = chan->LoadInfo();
|
|
loadinfo->SetPrincipalToInherit(thisContent->NodePrincipal());
|
|
}
|
|
|
|
// Referrer
|
|
nsCOMPtr<nsIHttpChannel> httpChan(do_QueryInterface(chan));
|
|
if (httpChan) {
|
|
nsCOMPtr<nsIReferrerInfo> referrerInfo = new ReferrerInfo();
|
|
referrerInfo->InitWithDocument(doc);
|
|
|
|
rv = httpChan->SetReferrerInfoWithoutClone(referrerInfo);
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv));
|
|
|
|
// Set the initiator type
|
|
nsCOMPtr<nsITimedChannel> timedChannel(do_QueryInterface(httpChan));
|
|
if (timedChannel) {
|
|
timedChannel->SetInitiatorType(thisContent->LocalName());
|
|
}
|
|
|
|
nsCOMPtr<nsIClassOfService> cos(do_QueryInterface(httpChan));
|
|
if (cos && EventStateManager::IsHandlingUserInput()) {
|
|
cos->AddClassFlags(nsIClassOfService::UrgentStart);
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIScriptChannel> scriptChannel = do_QueryInterface(chan);
|
|
if (scriptChannel) {
|
|
// Allow execution against our context if the principals match
|
|
scriptChannel->SetExecutionPolicy(nsIScriptChannel::EXECUTE_NORMAL);
|
|
}
|
|
|
|
// AsyncOpen can fail if a file does not exist.
|
|
rv = chan->AsyncOpen(shim);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
LOG(("OBJLC [%p]: Channel opened", this));
|
|
mChannel = chan;
|
|
return NS_OK;
|
|
}
|
|
|
|
uint32_t nsObjectLoadingContent::GetCapabilities() const {
|
|
return eSupportImages | eSupportPlugins | eSupportDocuments;
|
|
}
|
|
|
|
void nsObjectLoadingContent::DestroyContent() {
|
|
if (mFrameLoader) {
|
|
mFrameLoader->Destroy();
|
|
mFrameLoader = nullptr;
|
|
}
|
|
|
|
if (mInstanceOwner || mInstantiating) {
|
|
QueueCheckPluginStopEvent();
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
void nsObjectLoadingContent::Traverse(nsObjectLoadingContent* tmp,
|
|
nsCycleCollectionTraversalCallback& cb) {
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFrameLoader);
|
|
}
|
|
|
|
void nsObjectLoadingContent::UnloadObject(bool aResetState) {
|
|
// Don't notify in CancelImageRequests until we transition to a new loaded
|
|
// state
|
|
CancelImageRequests(false);
|
|
if (mFrameLoader) {
|
|
mFrameLoader->Destroy();
|
|
mFrameLoader = nullptr;
|
|
}
|
|
|
|
if (aResetState) {
|
|
if (mType != eType_Plugin) {
|
|
// This can re-enter when dealing with plugins, and StopPluginInstance
|
|
// will handle it
|
|
CloseChannel();
|
|
}
|
|
mChannelLoaded = false;
|
|
mType = eType_Loading;
|
|
mURI = mOriginalURI = mBaseURI = nullptr;
|
|
mContentType.Truncate();
|
|
mOriginalContentType.Truncate();
|
|
}
|
|
|
|
// InstantiatePluginInstance checks this after re-entrant calls and aborts if
|
|
// it was cleared from under it
|
|
mInstantiating = false;
|
|
|
|
mScriptRequested = false;
|
|
|
|
if (mIsStopping) {
|
|
// The protochain is normally thrown out after a plugin stops, but if we
|
|
// re-enter while stopping a plugin and try to load something new, we need
|
|
// to throw away the old protochain in the nested unload.
|
|
TeardownProtoChain();
|
|
mIsStopping = false;
|
|
}
|
|
|
|
mCachedAttributes.Clear();
|
|
mCachedParameters.Clear();
|
|
|
|
// This call should be last as it may re-enter
|
|
StopPluginInstance();
|
|
}
|
|
|
|
void nsObjectLoadingContent::NotifyStateChanged(ObjectType aOldType,
|
|
EventStates aOldState,
|
|
bool aSync, bool aNotify) {
|
|
LOG(("OBJLC [%p]: Notifying about state change: (%u, %" PRIx64
|
|
") -> (%u, %" PRIx64 ")"
|
|
" (sync %i, notify %i)",
|
|
this, aOldType, aOldState.GetInternalValue(), mType,
|
|
ObjectState().GetInternalValue(), aSync, aNotify));
|
|
|
|
nsCOMPtr<dom::Element> thisEl =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
MOZ_ASSERT(thisEl, "must be an element");
|
|
|
|
// XXX(johns): A good bit of the code below replicates UpdateState(true)
|
|
|
|
// Unfortunately, we do some state changes without notifying
|
|
// (e.g. in Fallback when canceling image requests), so we have to
|
|
// manually notify object state changes.
|
|
thisEl->UpdateState(false);
|
|
|
|
if (!aNotify) {
|
|
// We're done here
|
|
return;
|
|
}
|
|
|
|
Document* doc = thisEl->GetComposedDoc();
|
|
if (!doc) {
|
|
return; // Nothing to do
|
|
}
|
|
|
|
EventStates newState = ObjectState();
|
|
|
|
if (newState == aOldState && mType == aOldType) {
|
|
return; // Also done.
|
|
}
|
|
|
|
if (newState != aOldState) {
|
|
MOZ_ASSERT(thisEl->IsInComposedDoc(), "Something is confused");
|
|
// This will trigger frame construction
|
|
EventStates changedBits = aOldState ^ newState;
|
|
{
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
doc->ContentStateChanged(thisEl, changedBits);
|
|
}
|
|
|
|
// Create/destroy plugin problem UAWidget.
|
|
const EventStates pluginProblemState = NS_EVENT_STATE_HANDLER_BLOCKED |
|
|
NS_EVENT_STATE_HANDLER_CRASHED |
|
|
NS_EVENT_STATE_TYPE_CLICK_TO_PLAY |
|
|
NS_EVENT_STATE_VULNERABLE_UPDATABLE |
|
|
NS_EVENT_STATE_VULNERABLE_NO_UPDATE;
|
|
|
|
bool hadProblemState = !(aOldState & pluginProblemState).IsEmpty();
|
|
bool hasProblemState = !(newState & pluginProblemState).IsEmpty();
|
|
|
|
if (hadProblemState && !hasProblemState) {
|
|
thisEl->NotifyUAWidgetTeardown();
|
|
} else if (!hadProblemState && hasProblemState) {
|
|
thisEl->AttachAndSetUAShadowRoot();
|
|
thisEl->NotifyUAWidgetSetupOrChange();
|
|
}
|
|
} else if (aOldType != mType) {
|
|
// If our state changed, then we already recreated frames
|
|
// Otherwise, need to do that here
|
|
RefPtr<PresShell> presShell = doc->GetPresShell();
|
|
if (presShell) {
|
|
presShell->PostRecreateFramesFor(thisEl);
|
|
}
|
|
}
|
|
|
|
if (aSync) {
|
|
MOZ_ASSERT(InActiveDocument(thisEl), "Something is confused");
|
|
// Make sure that frames are actually constructed immediately.
|
|
doc->FlushPendingNotifications(FlushType::Frames);
|
|
}
|
|
}
|
|
|
|
nsObjectLoadingContent::ObjectType nsObjectLoadingContent::GetTypeOfContent(
|
|
const nsCString& aMIMEType, bool aNoFakePlugin) {
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
NS_ASSERTION(thisContent, "must be a content");
|
|
|
|
ObjectType type =
|
|
static_cast<ObjectType>(nsContentUtils::HtmlObjectContentTypeForMIMEType(
|
|
aMIMEType, aNoFakePlugin, thisContent));
|
|
|
|
// Switch the result type to eType_Null ic the capability is not present.
|
|
uint32_t caps = GetCapabilities();
|
|
if (!(caps & eSupportImages) && type == eType_Image) {
|
|
type = eType_Null;
|
|
}
|
|
if (!(caps & eSupportDocuments) && type == eType_Document) {
|
|
type = eType_Null;
|
|
}
|
|
if (!(caps & eSupportPlugins) &&
|
|
(type == eType_Plugin || type == eType_FakePlugin)) {
|
|
type = eType_Null;
|
|
}
|
|
|
|
return type;
|
|
}
|
|
|
|
nsPluginFrame* nsObjectLoadingContent::GetExistingFrame() {
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
nsIFrame* frame = thisContent->GetPrimaryFrame();
|
|
nsIObjectFrame* objFrame = do_QueryFrame(frame);
|
|
return static_cast<nsPluginFrame*>(objFrame);
|
|
}
|
|
|
|
void nsObjectLoadingContent::CreateStaticClone(
|
|
nsObjectLoadingContent* aDest) const {
|
|
nsImageLoadingContent::CreateStaticImageClone(aDest);
|
|
|
|
aDest->mType = mType;
|
|
nsObjectLoadingContent* thisObj = const_cast<nsObjectLoadingContent*>(this);
|
|
if (thisObj->mPrintFrame.IsAlive()) {
|
|
aDest->mPrintFrame = thisObj->mPrintFrame;
|
|
} else {
|
|
aDest->mPrintFrame =
|
|
const_cast<nsObjectLoadingContent*>(this)->GetExistingFrame();
|
|
}
|
|
|
|
if (mFrameLoader) {
|
|
nsCOMPtr<nsIContent> content =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(aDest));
|
|
nsFrameLoader* fl =
|
|
nsFrameLoader::Create(content->AsElement(), nullptr, false);
|
|
if (fl) {
|
|
aDest->mFrameLoader = fl;
|
|
mFrameLoader->CreateStaticClone(fl);
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::GetPrintFrame(nsIFrame** aFrame) {
|
|
*aFrame = mPrintFrame.GetFrame();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::PluginDestroyed() {
|
|
// Called when our plugin is destroyed from under us, usually when reloading
|
|
// plugins in plugin host. Invalidate instance owner / prototype but otherwise
|
|
// don't take any action.
|
|
TeardownProtoChain();
|
|
if (mInstanceOwner) {
|
|
mInstanceOwner->Destroy();
|
|
mInstanceOwner = nullptr;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::PluginCrashed(nsIPluginTag* aPluginTag,
|
|
const nsAString& pluginDumpID,
|
|
const nsAString& browserDumpID,
|
|
bool submittedCrashReport) {
|
|
LOG(("OBJLC [%p]: Plugin Crashed, queuing crash event", this));
|
|
NS_ASSERTION(mType == eType_Plugin, "PluginCrashed at non-plugin type");
|
|
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
|
|
#ifdef XP_MACOSX
|
|
HTMLObjectElement::HandlePluginCrashed(thisContent->AsElement());
|
|
#endif
|
|
|
|
PluginDestroyed();
|
|
|
|
// Switch to fallback/crashed state, notify
|
|
LoadFallback(eFallbackCrashed, true);
|
|
|
|
// send nsPluginCrashedEvent
|
|
|
|
// Note that aPluginTag in invalidated after we're called, so copy
|
|
// out any data we need now.
|
|
nsAutoCString pluginName;
|
|
aPluginTag->GetName(pluginName);
|
|
nsAutoCString pluginFilename;
|
|
aPluginTag->GetFilename(pluginFilename);
|
|
|
|
nsCOMPtr<nsIRunnable> ev = new nsPluginCrashedEvent(
|
|
thisContent, pluginDumpID, browserDumpID,
|
|
NS_ConvertUTF8toUTF16(pluginName), NS_ConvertUTF8toUTF16(pluginFilename),
|
|
submittedCrashReport);
|
|
nsresult rv = NS_DispatchToCurrentThread(ev);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("failed to dispatch nsPluginCrashedEvent");
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsNPAPIPluginInstance* nsObjectLoadingContent::ScriptRequestPluginInstance(
|
|
JSContext* aCx) {
|
|
// The below methods pull the cx off the stack, so make sure they match.
|
|
//
|
|
// NB: Sometimes there's a null cx on the stack, in which case |cx| is the
|
|
// safe JS context. But in that case, IsCallerChrome() will return true,
|
|
// so the ensuing expression is short-circuited.
|
|
// XXXbz the NB comment above doesn't really make sense. At the moment, all
|
|
// the callers to this except maybe SetupProtoChain have a useful JSContext*
|
|
// that could be used for nsContentUtils::IsSystemCaller... We do need to
|
|
// sort out what the SetupProtoChain callers look like.
|
|
MOZ_ASSERT_IF(nsContentUtils::GetCurrentJSContext(),
|
|
aCx == nsContentUtils::GetCurrentJSContext());
|
|
bool callerIsContentJS = (nsContentUtils::GetCurrentJSContext() &&
|
|
!nsContentUtils::IsCallerChrome() &&
|
|
!nsContentUtils::IsCallerContentXBL());
|
|
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
|
|
// The first time content script attempts to access placeholder content, fire
|
|
// an event. Fallback types >= eFallbackClickToPlay are plugin-replacement
|
|
// types, see header.
|
|
if (callerIsContentJS && !mScriptRequested && InActiveDocument(thisContent) &&
|
|
mType == eType_Null && mFallbackType >= eFallbackClickToPlay) {
|
|
nsCOMPtr<nsIRunnable> ev = new nsSimplePluginEvent(
|
|
thisContent, NS_LITERAL_STRING("PluginScripted"));
|
|
nsresult rv = NS_DispatchToCurrentThread(ev);
|
|
if (NS_FAILED(rv)) {
|
|
MOZ_ASSERT_UNREACHABLE("failed to dispatch PluginScripted event");
|
|
}
|
|
mScriptRequested = true;
|
|
} else if (callerIsContentJS && mType == eType_Plugin && !mInstanceOwner &&
|
|
nsContentUtils::IsSafeToRunScript() &&
|
|
InActiveDocument(thisContent)) {
|
|
// If we're configured as a plugin in an active document and it's safe to
|
|
// run scripts right now, try spawning synchronously
|
|
SyncStartPluginInstance();
|
|
}
|
|
|
|
if (mInstanceOwner) {
|
|
return mInstanceOwner->GetInstance();
|
|
}
|
|
|
|
// Note that returning a null plugin is expected (and happens often)
|
|
return nullptr;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::SyncStartPluginInstance() {
|
|
NS_ASSERTION(
|
|
nsContentUtils::IsSafeToRunScript(),
|
|
"Must be able to run script in order to instantiate a plugin instance!");
|
|
|
|
// Don't even attempt to start an instance unless the content is in
|
|
// the document and active
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
if (!InActiveDocument(thisContent)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsCOMPtr<nsIURI> kungFuURIGrip(mURI);
|
|
mozilla::Unused
|
|
<< kungFuURIGrip; // This URI is not referred to within this function
|
|
nsCString contentType(mContentType);
|
|
return InstantiatePluginInstance();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::AsyncStartPluginInstance() {
|
|
// OK to have an instance already or a pending spawn.
|
|
if (mInstanceOwner || mPendingInstantiateEvent) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
Document* doc = thisContent->OwnerDoc();
|
|
if (doc->IsStaticDocument() || doc->IsBeingUsedAsImage()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIRunnable> event = new nsAsyncInstantiateEvent(this);
|
|
nsresult rv = NS_DispatchToCurrentThread(event);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
// Track pending events
|
|
mPendingInstantiateEvent = event;
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::GetSrcURI(nsIURI** aURI) {
|
|
NS_IF_ADDREF(*aURI = GetSrcURI());
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsObjectLoadingContent::LoadFallback(FallbackType aType, bool aNotify) {
|
|
EventStates oldState = ObjectState();
|
|
ObjectType oldType = mType;
|
|
|
|
NS_ASSERTION(!mInstanceOwner && !mFrameLoader && !mChannel,
|
|
"LoadFallback called with loaded content");
|
|
|
|
//
|
|
// Fixup mFallbackType
|
|
//
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
NS_ASSERTION(thisContent, "must be a content");
|
|
|
|
if (!thisContent->IsHTMLElement() || mContentType.IsEmpty()) {
|
|
// Don't let custom fallback handlers run outside HTML, tags without a
|
|
// determined type should always just be alternate content
|
|
aType = eFallbackAlternate;
|
|
}
|
|
|
|
// We'll set this to null no matter what now, doing it here means we'll load
|
|
// child embeds as we find them in the upcoming loop.
|
|
mType = eType_Null;
|
|
|
|
bool thisIsObject = thisContent->IsHTMLElement(nsGkAtoms::object);
|
|
|
|
// Do a depth-first traverse of node tree with the current element as root,
|
|
// looking for <embed> or <object> elements that might now need to load.
|
|
nsTArray<nsINodeList*> childNodes;
|
|
if (thisContent->IsHTMLElement(nsGkAtoms::object) &&
|
|
(aType == eFallbackUnsupported || aType == eFallbackDisabled ||
|
|
aType == eFallbackBlocklisted || aType == eFallbackAlternate)) {
|
|
for (nsIContent* child = thisContent->GetFirstChild(); child;) {
|
|
// When we advance to our next child, we don't want to traverse subtrees
|
|
// under descendant <object> and <embed> elements; those will handle
|
|
// those subtrees themselves if they end up falling back.
|
|
bool skipChildDescendants = false;
|
|
if (aType != eFallbackAlternate &&
|
|
!child->IsHTMLElement(nsGkAtoms::param) &&
|
|
nsStyleUtil::IsSignificantChild(child, false)) {
|
|
aType = eFallbackAlternate;
|
|
}
|
|
if (thisIsObject) {
|
|
if (auto embed = HTMLEmbedElement::FromNode(child)) {
|
|
embed->StartObjectLoad(true, true);
|
|
skipChildDescendants = true;
|
|
} else if (auto object = HTMLObjectElement::FromNode(child)) {
|
|
object->StartObjectLoad(true, true);
|
|
skipChildDescendants = true;
|
|
}
|
|
}
|
|
|
|
if (skipChildDescendants) {
|
|
child = child->GetNextNonChildNode(thisContent);
|
|
} else {
|
|
child = child->GetNextNode(thisContent);
|
|
}
|
|
}
|
|
}
|
|
|
|
mFallbackType = aType;
|
|
|
|
// Notify
|
|
if (!aNotify) {
|
|
return; // done
|
|
}
|
|
|
|
NotifyStateChanged(oldType, oldState, false, true);
|
|
}
|
|
|
|
void nsObjectLoadingContent::DoStopPlugin(
|
|
nsPluginInstanceOwner* aInstanceOwner) {
|
|
// DoStopPlugin can process events -- There may be pending
|
|
// CheckPluginStopEvent events which can drop in underneath us and destroy the
|
|
// instance we are about to destroy. We prevent that with the mIsStopping
|
|
// flag.
|
|
if (mIsStopping) {
|
|
return;
|
|
}
|
|
mIsStopping = true;
|
|
|
|
RefPtr<nsPluginInstanceOwner> kungFuDeathGrip(aInstanceOwner);
|
|
if (mType == eType_FakePlugin) {
|
|
if (mFrameLoader) {
|
|
mFrameLoader->Destroy();
|
|
mFrameLoader = nullptr;
|
|
}
|
|
} else {
|
|
RefPtr<nsNPAPIPluginInstance> inst = aInstanceOwner->GetInstance();
|
|
if (inst) {
|
|
#if defined(XP_MACOSX)
|
|
aInstanceOwner->HidePluginWindow();
|
|
#endif
|
|
|
|
RefPtr<nsPluginHost> pluginHost = nsPluginHost::GetInst();
|
|
NS_ASSERTION(pluginHost, "No plugin host?");
|
|
pluginHost->StopPluginInstance(inst);
|
|
}
|
|
}
|
|
|
|
aInstanceOwner->Destroy();
|
|
|
|
// If we re-enter in plugin teardown UnloadObject will tear down the
|
|
// protochain -- the current protochain could be from a new, unrelated, load.
|
|
if (!mIsStopping) {
|
|
LOG(("OBJLC [%p]: Re-entered in plugin teardown", this));
|
|
return;
|
|
}
|
|
|
|
TeardownProtoChain();
|
|
mIsStopping = false;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::StopPluginInstance() {
|
|
AUTO_PROFILER_LABEL("nsObjectLoadingContent::StopPluginInstance", OTHER);
|
|
// Clear any pending events
|
|
mPendingInstantiateEvent = nullptr;
|
|
mPendingCheckPluginStopEvent = nullptr;
|
|
|
|
// If we're currently instantiating, clearing this will cause
|
|
// InstantiatePluginInstance's re-entrance check to destroy the created plugin
|
|
mInstantiating = false;
|
|
|
|
if (!mInstanceOwner) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (mChannel) {
|
|
// The plugin has already used data from this channel, we'll need to
|
|
// re-open it to handle instantiating again, even if we don't invalidate
|
|
// our loaded state.
|
|
/// XXX(johns): Except currently, we don't, just leaving re-opening channels
|
|
/// to plugins...
|
|
LOG(("OBJLC [%p]: StopPluginInstance - Closing used channel", this));
|
|
CloseChannel();
|
|
}
|
|
|
|
// We detach the instance owner's frame before destruction, but don't destroy
|
|
// the instance owner until the plugin is stopped.
|
|
mInstanceOwner->SetFrame(nullptr);
|
|
|
|
RefPtr<nsPluginInstanceOwner> ownerGrip(mInstanceOwner);
|
|
mInstanceOwner = nullptr;
|
|
|
|
// This can/will re-enter
|
|
DoStopPlugin(ownerGrip);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsObjectLoadingContent::NotifyContentObjectWrapper() {
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
|
|
AutoJSAPI jsapi;
|
|
jsapi.Init();
|
|
JSContext* cx = jsapi.cx();
|
|
|
|
JS::Rooted<JSObject*> obj(cx, thisContent->GetWrapper());
|
|
if (!obj) {
|
|
// Nothing to do here if there's no wrapper for mContent. The proto
|
|
// chain will be fixed appropriately when the wrapper is created.
|
|
return;
|
|
}
|
|
|
|
SetupProtoChain(cx, obj);
|
|
}
|
|
|
|
void nsObjectLoadingContent::PlayPlugin(SystemCallerGuarantee,
|
|
ErrorResult& aRv) {
|
|
// This is a ChromeOnly method, so no need to check caller type here.
|
|
if (!mActivated) {
|
|
mActivated = true;
|
|
LOG(("OBJLC [%p]: Activated by user", this));
|
|
}
|
|
|
|
// If we're in a click-to-play state, reload.
|
|
// Fallback types >= eFallbackClickToPlay are plugin-replacement types, see
|
|
// header
|
|
if (mType == eType_Null && mFallbackType >= eFallbackClickToPlay) {
|
|
aRv = LoadObject(true, true);
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::Reload(bool aClearActivation) {
|
|
if (aClearActivation) {
|
|
mActivated = false;
|
|
mSkipFakePlugins = false;
|
|
}
|
|
|
|
return LoadObject(true, true);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::GetActivated(bool* aActivated) {
|
|
*aActivated = Activated();
|
|
return NS_OK;
|
|
}
|
|
|
|
uint32_t nsObjectLoadingContent::DefaultFallbackType() {
|
|
FallbackType reason;
|
|
if (ShouldPlay(reason)) {
|
|
return PLUGIN_ACTIVE;
|
|
}
|
|
return reason;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::SkipFakePlugins() {
|
|
if (!nsContentUtils::IsCallerChrome()) return NS_ERROR_NOT_AVAILABLE;
|
|
|
|
mSkipFakePlugins = true;
|
|
|
|
// If we're showing a fake plugin now, reload
|
|
if (mType == eType_FakePlugin) {
|
|
return LoadObject(true, true);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
uint32_t nsObjectLoadingContent::GetRunID(SystemCallerGuarantee,
|
|
ErrorResult& aRv) {
|
|
if (!mHasRunID) {
|
|
// The plugin instance must not have a run ID, so we must
|
|
// be running the plugin in-process.
|
|
aRv.Throw(NS_ERROR_NOT_IMPLEMENTED);
|
|
return 0;
|
|
}
|
|
return mRunID;
|
|
}
|
|
|
|
static bool sPrefsInitialized;
|
|
static uint32_t sSessionTimeoutMinutes;
|
|
static uint32_t sPersistentTimeoutDays;
|
|
static bool sBlockURIs;
|
|
|
|
static void initializeObjectLoadingContentPrefs() {
|
|
if (!sPrefsInitialized) {
|
|
Preferences::AddUintVarCache(
|
|
&sSessionTimeoutMinutes,
|
|
"plugin.sessionPermissionNow.intervalInMinutes", 60);
|
|
Preferences::AddUintVarCache(
|
|
&sPersistentTimeoutDays,
|
|
"plugin.persistentPermissionAlways.intervalInDays", 90);
|
|
|
|
Preferences::AddBoolVarCache(&sBlockURIs, kPrefBlockURIs, false);
|
|
sPrefsInitialized = true;
|
|
}
|
|
}
|
|
|
|
bool nsObjectLoadingContent::ShouldBlockContent() {
|
|
if (!sPrefsInitialized) {
|
|
initializeObjectLoadingContentPrefs();
|
|
}
|
|
|
|
if (mContentBlockingEnabled && mURI && IsFlashMIME(mContentType) &&
|
|
sBlockURIs) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool nsObjectLoadingContent::ShouldPlay(FallbackType& aReason) {
|
|
nsresult rv;
|
|
|
|
if (!sPrefsInitialized) {
|
|
initializeObjectLoadingContentPrefs();
|
|
}
|
|
|
|
if (BrowserTabsRemoteAutostart()) {
|
|
bool shouldLoadInParent =
|
|
nsPluginHost::ShouldLoadTypeInParent(mContentType);
|
|
bool inParent = XRE_IsParentProcess();
|
|
|
|
if (shouldLoadInParent != inParent) {
|
|
// Plugins need to be locked to either the parent process or the content
|
|
// process. If a plugin is locked to one process type, it can't be used in
|
|
// the other. Otherwise we'll get hangs.
|
|
aReason = eFallbackDisabled;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
RefPtr<nsPluginHost> pluginHost = nsPluginHost::GetInst();
|
|
|
|
// Order of checks:
|
|
// * Assume a default of click-to-play
|
|
// * If globally disabled, per-site permissions cannot override.
|
|
// * If blocklisted, override the reason with the blocklist reason
|
|
// * Check if the flash blocking status for this page denies flash from
|
|
// loading.
|
|
// * Check per-site permissions and follow those if specified.
|
|
// * Honor per-plugin disabled permission
|
|
// * Blocklisted plugins are forced to CtP
|
|
// * Check per-plugin permission and follow that.
|
|
|
|
aReason = eFallbackClickToPlay;
|
|
|
|
uint32_t enabledState = nsIPluginTag::STATE_DISABLED;
|
|
pluginHost->GetStateForType(mContentType, nsPluginHost::eExcludeNone,
|
|
&enabledState);
|
|
if (nsIPluginTag::STATE_DISABLED == enabledState) {
|
|
aReason = eFallbackDisabled;
|
|
return false;
|
|
}
|
|
|
|
// Before we check permissions, get the blocklist state of this plugin to set
|
|
// the fallback reason correctly. In the content process this will involve
|
|
// an ipc call to chrome.
|
|
uint32_t blocklistState = nsIBlocklistService::STATE_BLOCKED;
|
|
pluginHost->GetBlocklistStateForType(mContentType, nsPluginHost::eExcludeNone,
|
|
&blocklistState);
|
|
if (blocklistState == nsIBlocklistService::STATE_BLOCKED) {
|
|
// no override possible
|
|
aReason = eFallbackBlocklisted;
|
|
return false;
|
|
}
|
|
|
|
if (blocklistState ==
|
|
nsIBlocklistService::STATE_VULNERABLE_UPDATE_AVAILABLE) {
|
|
aReason = eFallbackVulnerableUpdatable;
|
|
} else if (blocklistState ==
|
|
nsIBlocklistService::STATE_VULNERABLE_NO_UPDATE) {
|
|
aReason = eFallbackVulnerableNoUpdate;
|
|
}
|
|
|
|
// Document and window lookup
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIObjectLoadingContent*>(this));
|
|
MOZ_ASSERT(thisContent);
|
|
Document* ownerDoc = thisContent->OwnerDoc();
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = ownerDoc->GetWindow();
|
|
if (!window) {
|
|
return false;
|
|
}
|
|
nsCOMPtr<nsPIDOMWindowOuter> topWindow = window->GetInProcessTop();
|
|
NS_ENSURE_TRUE(topWindow, false);
|
|
nsCOMPtr<Document> topDoc = topWindow->GetDoc();
|
|
NS_ENSURE_TRUE(topDoc, false);
|
|
|
|
// Check the flash blocking status for this page (this applies to Flash only)
|
|
FlashClassification documentClassification = FlashClassification::Unknown;
|
|
if (IsFlashMIME(mContentType)) {
|
|
documentClassification = ownerDoc->DocumentFlashClassification();
|
|
}
|
|
if (documentClassification == FlashClassification::Denied) {
|
|
aReason = eFallbackSuppressed;
|
|
return false;
|
|
}
|
|
|
|
// Check the permission manager for permission based on the principal of
|
|
// the toplevel content.
|
|
nsCOMPtr<nsIPermissionManager> permissionManager =
|
|
services::GetPermissionManager();
|
|
NS_ENSURE_TRUE(permissionManager, false);
|
|
|
|
// For now we always say that the system principal uses click-to-play since
|
|
// that maintains current behavior and we have tests that expect this. What
|
|
// we really should do is disable plugins entirely in pages that use the
|
|
// system principal, i.e. in chrome pages. That way the click-to-play code
|
|
// here wouldn't matter at all. Bug 775301 is tracking this.
|
|
if (!nsContentUtils::IsSystemPrincipal(topDoc->NodePrincipal())) {
|
|
nsAutoCString permissionString;
|
|
rv = pluginHost->GetPermissionStringForType(
|
|
mContentType, nsPluginHost::eExcludeNone, permissionString);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
uint32_t permission;
|
|
rv = permissionManager->TestPermissionFromPrincipal(
|
|
topDoc->NodePrincipal(), permissionString, &permission);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
if (permission != nsIPermissionManager::UNKNOWN_ACTION) {
|
|
uint64_t nowms = PR_Now() / 1000;
|
|
permissionManager->UpdateExpireTime(
|
|
topDoc->NodePrincipal(), permissionString, false,
|
|
nowms + sSessionTimeoutMinutes * 60 * 1000,
|
|
nowms / 1000 +
|
|
uint64_t(sPersistentTimeoutDays) * 24 * 60 * 60 * 1000);
|
|
}
|
|
switch (permission) {
|
|
case nsIPermissionManager::ALLOW_ACTION:
|
|
if (PreferFallback(false /* isPluginClickToPlay */)) {
|
|
aReason = eFallbackAlternate;
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
case nsIPermissionManager::DENY_ACTION:
|
|
aReason = eFallbackDisabled;
|
|
return false;
|
|
case PLUGIN_PERMISSION_PROMPT_ACTION_QUIET:
|
|
if (PreferFallback(true /* isPluginClickToPlay */)) {
|
|
aReason = eFallbackAlternate;
|
|
} else {
|
|
aReason = eFallbackClickToPlayQuiet;
|
|
}
|
|
|
|
return false;
|
|
case nsIPermissionManager::PROMPT_ACTION:
|
|
if (PreferFallback(true /* isPluginClickToPlay */)) {
|
|
// False is already returned in this case, but
|
|
// it's important to correctly set aReason too.
|
|
aReason = eFallbackAlternate;
|
|
}
|
|
|
|
return false;
|
|
case nsIPermissionManager::UNKNOWN_ACTION:
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(false);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// No site-specific permissions. Vulnerable plugins are automatically CtP
|
|
if (blocklistState ==
|
|
nsIBlocklistService::STATE_VULNERABLE_UPDATE_AVAILABLE ||
|
|
blocklistState == nsIBlocklistService::STATE_VULNERABLE_NO_UPDATE) {
|
|
return false;
|
|
}
|
|
|
|
if (PreferFallback(enabledState == nsIPluginTag::STATE_CLICKTOPLAY)) {
|
|
aReason = eFallbackAlternate;
|
|
return false;
|
|
}
|
|
|
|
// On the following switch we don't need to handle the case where
|
|
// documentClassification is FlashClassification::Denied because
|
|
// that's already handled above.
|
|
switch (enabledState) {
|
|
case nsIPluginTag::STATE_ENABLED:
|
|
return true;
|
|
case nsIPluginTag::STATE_CLICKTOPLAY:
|
|
if (documentClassification == FlashClassification::Allowed) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
MOZ_CRASH("Unexpected enabledState");
|
|
}
|
|
|
|
bool nsObjectLoadingContent::FavorFallbackMode(bool aIsPluginClickToPlay) {
|
|
if (!IsFlashMIME(mContentType)) {
|
|
return false;
|
|
}
|
|
|
|
nsAutoCString prefString;
|
|
if (NS_SUCCEEDED(
|
|
Preferences::GetCString(kPrefFavorFallbackMode, prefString))) {
|
|
if (aIsPluginClickToPlay && prefString.EqualsLiteral("follow-ctp")) {
|
|
return true;
|
|
}
|
|
|
|
if (prefString.EqualsLiteral("always")) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool nsObjectLoadingContent::HasGoodFallback() {
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
NS_ASSERTION(thisContent, "must be a content");
|
|
|
|
if (!thisContent->IsHTMLElement(nsGkAtoms::object) ||
|
|
mContentType.IsEmpty()) {
|
|
return false;
|
|
}
|
|
|
|
nsTArray<nsCString> rulesList;
|
|
nsAutoCString prefString;
|
|
if (NS_SUCCEEDED(
|
|
Preferences::GetCString(kPrefFavorFallbackRules, prefString))) {
|
|
ParseString(prefString, ',', rulesList);
|
|
}
|
|
|
|
for (uint32_t i = 0; i < rulesList.Length(); ++i) {
|
|
// RULE "embed":
|
|
// Don't use fallback content if the object contains an <embed> inside its
|
|
// fallback content.
|
|
if (rulesList[i].EqualsLiteral("embed")) {
|
|
nsTArray<nsINodeList*> childNodes;
|
|
for (nsIContent* child = thisContent->GetFirstChild(); child;
|
|
child = child->GetNextNode(thisContent)) {
|
|
if (child->IsHTMLElement(nsGkAtoms::embed)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// RULE "video":
|
|
// Use fallback content if the object contains a <video> inside its
|
|
// fallback content.
|
|
if (rulesList[i].EqualsLiteral("video")) {
|
|
nsTArray<nsINodeList*> childNodes;
|
|
for (nsIContent* child = thisContent->GetFirstChild(); child;
|
|
child = child->GetNextNode(thisContent)) {
|
|
if (child->IsHTMLElement(nsGkAtoms::video)) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// RULE "nosrc":
|
|
// Use fallback content if the object has not specified an URI.
|
|
if (rulesList[i].EqualsLiteral("nosrc")) {
|
|
if (!mOriginalURI) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// RULE "adobelink":
|
|
// Don't use fallback content when it has a link to adobe's website.
|
|
if (rulesList[i].EqualsLiteral("adobelink")) {
|
|
nsTArray<nsINodeList*> childNodes;
|
|
for (nsIContent* child = thisContent->GetFirstChild(); child;
|
|
child = child->GetNextNode(thisContent)) {
|
|
if (child->IsHTMLElement(nsGkAtoms::a)) {
|
|
nsCOMPtr<nsIURI> href = child->GetHrefURI();
|
|
if (href) {
|
|
nsAutoCString asciiHost;
|
|
nsresult rv = href->GetAsciiHost(asciiHost);
|
|
if (NS_SUCCEEDED(rv) && !asciiHost.IsEmpty() &&
|
|
(asciiHost.EqualsLiteral("adobe.com") ||
|
|
StringEndsWith(asciiHost, NS_LITERAL_CSTRING(".adobe.com")))) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// RULE "installinstructions":
|
|
// Don't use fallback content when the text content on the fallback appears
|
|
// to contain instructions to install or download Flash.
|
|
if (rulesList[i].EqualsLiteral("installinstructions")) {
|
|
nsAutoString textContent;
|
|
ErrorResult rv;
|
|
thisContent->GetTextContent(textContent, rv);
|
|
bool hasText =
|
|
!rv.Failed() && (CaseInsensitiveFindInReadable(
|
|
NS_LITERAL_STRING("Flash"), textContent) ||
|
|
CaseInsensitiveFindInReadable(
|
|
NS_LITERAL_STRING("Install"), textContent) ||
|
|
CaseInsensitiveFindInReadable(
|
|
NS_LITERAL_STRING("Download"), textContent));
|
|
|
|
if (hasText) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// RULE "true":
|
|
// By having a rule that returns true, we can put it at the end of the rules
|
|
// list to change the default-to-false behavior to be default-to-true.
|
|
if (rulesList[i].EqualsLiteral("true")) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool nsObjectLoadingContent::PreferFallback(bool aIsPluginClickToPlay) {
|
|
if (mPreferFallbackKnown) {
|
|
return mPreferFallback;
|
|
}
|
|
|
|
mPreferFallbackKnown = true;
|
|
mPreferFallback =
|
|
FavorFallbackMode(aIsPluginClickToPlay) && HasGoodFallback();
|
|
return mPreferFallback;
|
|
}
|
|
|
|
Document* nsObjectLoadingContent::GetContentDocument(
|
|
nsIPrincipal& aSubjectPrincipal) {
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
|
|
if (!thisContent->IsInComposedDoc()) {
|
|
return nullptr;
|
|
}
|
|
|
|
Document* sub_doc = thisContent->OwnerDoc()->GetSubDocumentFor(thisContent);
|
|
if (!sub_doc) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Return null for cross-origin contentDocument.
|
|
if (!aSubjectPrincipal.SubsumesConsideringDomain(sub_doc->NodePrincipal())) {
|
|
return nullptr;
|
|
}
|
|
|
|
return sub_doc;
|
|
}
|
|
|
|
void nsObjectLoadingContent::SetupProtoChain(JSContext* aCx,
|
|
JS::Handle<JSObject*> aObject) {
|
|
if (mType != eType_Plugin) {
|
|
return;
|
|
}
|
|
|
|
if (!nsContentUtils::IsSafeToRunScript()) {
|
|
RefPtr<SetupProtoChainRunner> runner = new SetupProtoChainRunner(this);
|
|
nsContentUtils::AddScriptRunner(runner);
|
|
return;
|
|
}
|
|
|
|
// We get called on random realms here for some reason
|
|
// (perhaps because WrapObject can happen on a random realm?)
|
|
// so make sure to enter the realm of aObject.
|
|
MOZ_ASSERT(aCx == nsContentUtils::GetCurrentJSContext());
|
|
|
|
MOZ_ASSERT(IsDOMObject(aObject));
|
|
JSAutoRealm ar(aCx, aObject);
|
|
|
|
RefPtr<nsNPAPIPluginInstance> pi = ScriptRequestPluginInstance(aCx);
|
|
|
|
if (!pi) {
|
|
// No plugin around for this object.
|
|
return;
|
|
}
|
|
|
|
JS::Rooted<JSObject*> pi_obj(
|
|
aCx); // XPConnect-wrapped peer object, when we get it.
|
|
JS::Rooted<JSObject*> pi_proto(aCx); // 'pi.__proto__'
|
|
|
|
nsresult rv = GetPluginJSObject(aCx, pi, &pi_obj, &pi_proto);
|
|
if (NS_FAILED(rv)) {
|
|
return;
|
|
}
|
|
|
|
if (!pi_obj) {
|
|
// Didn't get a plugin instance JSObject, nothing we can do then.
|
|
return;
|
|
}
|
|
|
|
// If we got an xpconnect-wrapped plugin object, set obj's
|
|
// prototype's prototype to the scriptable plugin.
|
|
|
|
JS::Handle<JSObject*> my_proto = GetDOMClass(aObject)->mGetProto(aCx);
|
|
MOZ_ASSERT(my_proto);
|
|
|
|
// Set 'this.__proto__' to pi
|
|
if (!::JS_SetPrototype(aCx, aObject, pi_obj)) {
|
|
return;
|
|
}
|
|
|
|
if (pi_proto && js::GetObjectClass(pi_proto) != js::ObjectClassPtr) {
|
|
// The plugin wrapper has a proto that's not Object.prototype, set
|
|
// 'pi.__proto__.__proto__' to the original 'this.__proto__'
|
|
if (pi_proto != my_proto && !::JS_SetPrototype(aCx, pi_proto, my_proto)) {
|
|
return;
|
|
}
|
|
} else {
|
|
// 'pi' didn't have a prototype, or pi's proto was
|
|
// 'Object.prototype' (i.e. pi is an NPRuntime wrapped JS object)
|
|
// set 'pi.__proto__' to the original 'this.__proto__'
|
|
if (!::JS_SetPrototype(aCx, pi_obj, my_proto)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Before this proto dance the objects involved looked like this:
|
|
//
|
|
// this.__proto__.__proto__
|
|
// ^ ^ ^
|
|
// | | |__ Object.prototype
|
|
// | |
|
|
// | |__ WebIDL prototype (shared)
|
|
// |
|
|
// |__ WebIDL object
|
|
//
|
|
// pi.__proto__
|
|
// ^ ^
|
|
// | |__ Object.prototype or some other object
|
|
// |
|
|
// |__ Plugin NPRuntime JS object wrapper
|
|
//
|
|
// Now, after the above prototype setup the prototype chain should
|
|
// look like this if pi.__proto__ was Object.prototype:
|
|
//
|
|
// this.__proto__.__proto__.__proto__
|
|
// ^ ^ ^ ^
|
|
// | | | |__ Object.prototype
|
|
// | | |
|
|
// | | |__ WebIDL prototype (shared)
|
|
// | |
|
|
// | |__ Plugin NPRuntime JS object wrapper
|
|
// |
|
|
// |__ WebIDL object
|
|
//
|
|
// or like this if pi.__proto__ was some other object:
|
|
//
|
|
// this.__proto__.__proto__.__proto__.__proto__
|
|
// ^ ^ ^ ^ ^
|
|
// | | | | |__ Object.prototype
|
|
// | | | |
|
|
// | | | |__ WebIDL prototype (shared)
|
|
// | | |
|
|
// | | |__ old pi.__proto__
|
|
// | |
|
|
// | |__ Plugin NPRuntime JS object wrapper
|
|
// |
|
|
// |__ WebIDL object
|
|
//
|
|
}
|
|
|
|
// static
|
|
nsresult nsObjectLoadingContent::GetPluginJSObject(
|
|
JSContext* cx, nsNPAPIPluginInstance* plugin_inst,
|
|
JS::MutableHandle<JSObject*> plugin_obj,
|
|
JS::MutableHandle<JSObject*> plugin_proto) {
|
|
if (plugin_inst) {
|
|
plugin_inst->GetJSObject(cx, plugin_obj.address());
|
|
if (plugin_obj) {
|
|
if (!::JS_GetPrototype(cx, plugin_obj, plugin_proto)) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsObjectLoadingContent::TeardownProtoChain() {
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
|
|
NS_ENSURE_TRUE_VOID(thisContent->GetWrapper());
|
|
|
|
// We don't init the AutoJSAPI with our wrapper because we don't want it
|
|
// reporting errors to our window's onerror listeners.
|
|
AutoJSAPI jsapi;
|
|
jsapi.Init();
|
|
JSContext* cx = jsapi.cx();
|
|
JS::Rooted<JSObject*> obj(cx, thisContent->GetWrapper());
|
|
MOZ_ASSERT(obj);
|
|
|
|
JS::Rooted<JSObject*> proto(cx);
|
|
JSAutoRealm ar(cx, obj);
|
|
|
|
// Loop over the DOM element's JS object prototype chain and remove
|
|
// all JS objects of the class sNPObjectJSWrapperClass
|
|
DebugOnly<bool> removed = false;
|
|
while (obj) {
|
|
if (!::JS_GetPrototype(cx, obj, &proto)) {
|
|
return;
|
|
}
|
|
if (!proto) {
|
|
break;
|
|
}
|
|
// Unwrap while checking the class - if the prototype is a wrapper for
|
|
// an NP object, that counts too.
|
|
if (nsNPObjWrapper::IsWrapper(js::UncheckedUnwrap(proto))) {
|
|
// We found an NPObject on the proto chain, get its prototype...
|
|
if (!::JS_GetPrototype(cx, proto, &proto)) {
|
|
return;
|
|
}
|
|
|
|
MOZ_ASSERT(!removed, "more than one NPObject in prototype chain");
|
|
removed = true;
|
|
|
|
// ... and pull it out of the chain.
|
|
::JS_SetPrototype(cx, obj, proto);
|
|
}
|
|
|
|
obj = proto;
|
|
}
|
|
}
|
|
|
|
bool nsObjectLoadingContent::DoResolve(
|
|
JSContext* aCx, JS::Handle<JSObject*> aObject, JS::Handle<jsid> aId,
|
|
JS::MutableHandle<JS::PropertyDescriptor> aDesc) {
|
|
// We don't resolve anything; we just try to make sure we're instantiated.
|
|
// This purposefully does not fire for chrome/xray resolves, see bug 967694
|
|
Unused << ScriptRequestPluginInstance(aCx);
|
|
return true;
|
|
}
|
|
|
|
/* static */
|
|
bool nsObjectLoadingContent::MayResolve(jsid aId) {
|
|
// We can resolve anything, really.
|
|
return true;
|
|
}
|
|
|
|
void nsObjectLoadingContent::GetOwnPropertyNames(
|
|
JSContext* aCx, JS::MutableHandleVector<jsid> /* unused */,
|
|
bool /* unused */, ErrorResult& aRv) {
|
|
// Just like DoResolve, just make sure we're instantiated. That will do
|
|
// the work our Enumerate hook needs to do. This purposefully does not fire
|
|
// for xray resolves, see bug 967694
|
|
Unused << ScriptRequestPluginInstance(aCx);
|
|
}
|
|
|
|
void nsObjectLoadingContent::MaybeFireErrorEvent() {
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
// Queue a task to fire an error event if we're an <object> element. The
|
|
// queueing is important, since then we don't have to worry about reentry.
|
|
if (thisContent->IsHTMLElement(nsGkAtoms::object)) {
|
|
RefPtr<AsyncEventDispatcher> loadBlockingAsyncDispatcher =
|
|
new LoadBlockingAsyncEventDispatcher(
|
|
thisContent, NS_LITERAL_STRING("error"), CanBubble::eNo,
|
|
ChromeOnlyDispatch::eNo);
|
|
loadBlockingAsyncDispatcher->PostDOMEvent();
|
|
}
|
|
}
|
|
|
|
bool nsObjectLoadingContent::BlockEmbedOrObjectContentLoading() {
|
|
nsCOMPtr<nsIContent> thisContent =
|
|
do_QueryInterface(static_cast<nsIImageLoadingContent*>(this));
|
|
|
|
// Traverse up the node tree to see if we have any ancestors that may block us
|
|
// from loading
|
|
for (nsIContent* parent = thisContent->GetParent(); parent;
|
|
parent = parent->GetParent()) {
|
|
if (parent->IsAnyOfHTMLElements(nsGkAtoms::video, nsGkAtoms::audio)) {
|
|
return true;
|
|
}
|
|
// If we have an ancestor that is an object with a source, it'll have an
|
|
// associated displayed type. If that type is not null, don't load content
|
|
// for the embed.
|
|
if (HTMLObjectElement* object = HTMLObjectElement::FromNode(parent)) {
|
|
uint32_t type = object->DisplayedType();
|
|
if (type != eType_Null) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// SetupProtoChainRunner implementation
|
|
nsObjectLoadingContent::SetupProtoChainRunner::SetupProtoChainRunner(
|
|
nsObjectLoadingContent* aContent)
|
|
: mContent(aContent) {}
|
|
|
|
NS_IMETHODIMP
|
|
nsObjectLoadingContent::SetupProtoChainRunner::Run() {
|
|
AutoJSAPI jsapi;
|
|
jsapi.Init();
|
|
JSContext* cx = jsapi.cx();
|
|
|
|
nsCOMPtr<nsIContent> content;
|
|
CallQueryInterface(mContent.get(), getter_AddRefs(content));
|
|
JS::Rooted<JSObject*> obj(cx, content->GetWrapper());
|
|
if (!obj) {
|
|
// No need to set up our proto chain if we don't even have an object
|
|
return NS_OK;
|
|
}
|
|
nsObjectLoadingContent* objectLoadingContent =
|
|
static_cast<nsObjectLoadingContent*>(mContent.get());
|
|
objectLoadingContent->SetupProtoChain(cx, obj);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS(nsObjectLoadingContent::SetupProtoChainRunner, nsIRunnable)
|