gecko-dev/dom/ipc/BrowserBridgeParent.h
Andreas Farre 4b493b6a30 Bug 1595491 - Part 1: Make <embed> and <object> behave more like <iframe>. r=smaug,emilio
By making image loading in <embed> and <object> behave more like when
an <iframe> loads an image, we can make sure that the synthetic
document generated is process switched if the image is cross
origin. This is done by making image loading in nsObjectLoadingContent
follow the document loading path.

We also make sure that we pass the image size back to the embedder
element to not get stuck with the intrinsic size.

To avoid named targeting being able to target these synthetic
documents, as well as showing up in `Window.frames` and being counted
in `Window.length`, we keep a filtered list of non-synthetic browsing
contexts for that use-case.

This feature is controlled by two prefs:

* browser.opaqueResponseBlocking.syntheticBrowsingContext

  This triggers the creation of synthetic documents for images loaded
  in <object> or embed.

* browser.opaqueResponseBlocking.syntheticBrowsingContext.filter

  This turns on the filtering of synthetic browsing contexts in named
  targeting, `Window.length` and `Window.frames`.

Differential Revision: https://phabricator.services.mozilla.com/D148117
2022-08-16 16:42:58 +00:00

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_BrowserBridgeParent_h
#define mozilla_dom_BrowserBridgeParent_h
#include "mozilla/dom/PBrowserBridgeParent.h"
#include "mozilla/dom/ipc/IdType.h"
#include "mozilla/dom/WindowGlobalTypes.h"
namespace mozilla {
namespace a11y {
class DocAccessibleParent;
}
namespace embedding {
class PrintData;
}
namespace dom {
class BrowserParent;
/**
* BrowserBridgeParent implements the parent actor part of the PBrowserBridge
* protocol. See PBrowserBridge for more information.
*/
class BrowserBridgeParent : public PBrowserBridgeParent {
public:
NS_INLINE_DECL_REFCOUNTING(BrowserBridgeParent, final);
BrowserBridgeParent();
nsresult InitWithProcess(BrowserParent* aParentBrowser,
ContentParent* aContentParent,
const WindowGlobalInit& aWindowInit,
uint32_t aChromeFlags, TabId aTabId);
BrowserParent* GetBrowserParent() { return mBrowserParent; }
CanonicalBrowsingContext* GetBrowsingContext();
// Get our manager actor.
BrowserParent* Manager();
#if defined(ACCESSIBILITY)
/**
* Get the DocAccessibleParent which contains this iframe.
*/
a11y::DocAccessibleParent* GetEmbedderAccessibleDoc();
/**
* Get the unique id of the OuterDocAccessible associated with this iframe.
* This is the id of the RemoteAccessible inside the document returned by
* GetEmbedderAccessibleDoc.
*/
uint64_t GetEmbedderAccessibleId() { return mEmbedderAccessibleID; }
/**
* Get the DocAccessibleParent for the embedded document.
*/
a11y::DocAccessibleParent* GetDocAccessibleParent();
#endif // defined(ACCESSIBILITY)
// Tear down this BrowserBridgeParent.
void Destroy();
protected:
friend class PBrowserBridgeParent;
mozilla::ipc::IPCResult RecvShow(const OwnerShowInfo&);
mozilla::ipc::IPCResult RecvScrollbarPreferenceChanged(ScrollbarPreference);
mozilla::ipc::IPCResult RecvLoadURL(nsDocShellLoadState* aLoadState);
mozilla::ipc::IPCResult RecvResumeLoad(uint64_t aPendingSwitchID);
mozilla::ipc::IPCResult RecvUpdateDimensions(const nsIntRect& aRect,
const ScreenIntSize& aSize);
mozilla::ipc::IPCResult RecvUpdateEffects(const EffectsInfo& aEffects);
mozilla::ipc::IPCResult RecvUpdateRemotePrintSettings(
const embedding::PrintData&);
mozilla::ipc::IPCResult RecvRenderLayers(const bool& aEnabled,
const LayersObserverEpoch& aEpoch);
mozilla::ipc::IPCResult RecvNavigateByKey(const bool& aForward,
const bool& aForDocumentNavigation);
mozilla::ipc::IPCResult RecvBeginDestroy();
mozilla::ipc::IPCResult RecvDispatchSynthesizedMouseEvent(
const WidgetMouseEvent& aEvent);
mozilla::ipc::IPCResult RecvWillChangeProcess();
mozilla::ipc::IPCResult RecvActivate(uint64_t aActionId);
mozilla::ipc::IPCResult RecvDeactivate(const bool& aWindowLowering,
uint64_t aActionId);
mozilla::ipc::IPCResult RecvSetIsUnderHiddenEmbedderElement(
const bool& aIsUnderHiddenEmbedderElement);
mozilla::ipc::IPCResult RecvUpdateRemoteStyle(
const StyleImageRendering& aImageRendering);
#ifdef ACCESSIBILITY
mozilla::ipc::IPCResult RecvSetEmbedderAccessible(PDocAccessibleParent* aDoc,
uint64_t aID);
#endif
void ActorDestroy(ActorDestroyReason aWhy) override;
private:
~BrowserBridgeParent();
RefPtr<BrowserParent> mBrowserParent;
#ifdef ACCESSIBILITY
RefPtr<a11y::DocAccessibleParent> mEmbedderAccessibleDoc;
uint64_t mEmbedderAccessibleID = 0;
#endif // ACCESSIBILITY
};
} // namespace dom
} // namespace mozilla
#endif // !defined(mozilla_dom_BrowserBridgeParent_h)