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Moonchild
824d0cad58
In order to tailor certain security checks to the caller that is attempting to load a particular piece of content, we need to be able to attach an appropriate triggering principal to the corresponding requests. Since most HTML content is loaded based on attribute values, this means capturing the subject principal of the caller who sets those attributes, which in turn means we need to make it available to `AfterSetAttr` hooks on all relevant element types.
128 lines
3.8 KiB
C++
128 lines
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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#ifndef mozilla_dom_HTMLSourceElement_h
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#define mozilla_dom_HTMLSourceElement_h
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#include "mozilla/Attributes.h"
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#include "nsIDOMHTMLSourceElement.h"
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#include "nsGenericHTMLElement.h"
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#include "mozilla/dom/HTMLMediaElement.h"
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class nsMediaList;
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class nsAttrValue;
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namespace mozilla {
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namespace dom {
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class HTMLSourceElement final : public nsGenericHTMLElement,
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public nsIDOMHTMLSourceElement
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{
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public:
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explicit HTMLSourceElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);
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// nsISupports
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLSourceElement,
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nsGenericHTMLElement)
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NS_IMPL_FROMCONTENT_HTML_WITH_TAG(HTMLSourceElement, source)
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// nsIDOMHTMLSourceElement
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NS_DECL_NSIDOMHTMLSOURCEELEMENT
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virtual nsresult Clone(mozilla::dom::NodeInfo* aNodeInfo, nsINode** aResult) const override;
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// Override BindToTree() so that we can trigger a load when we add a
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// child source element.
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virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
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nsIContent* aBindingParent,
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bool aCompileEventHandlers) override;
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// If this element's media attr matches for its owner document. Returns true
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// if no media attr was set.
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bool MatchesCurrentMedia();
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// True if a source tag would match the given media attribute for the
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// specified document. Used by the preloader to determine valid <source> tags
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// prior to DOM creation.
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static bool WouldMatchMediaForDocument(const nsAString& aMediaStr,
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const nsIDocument *aDocument);
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// Return the MediaSource object if any associated with the src attribute
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// when it was set.
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MediaSource* GetSrcMediaSource() { return mSrcMediaSource; };
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// WebIDL
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void GetSrc(nsString& aSrc)
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{
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GetURIAttr(nsGkAtoms::src, nullptr, aSrc);
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}
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void SetSrc(const nsAString& aSrc, mozilla::ErrorResult& rv)
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{
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SetHTMLAttr(nsGkAtoms::src, aSrc, rv);
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}
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void GetType(DOMString& aType)
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{
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GetHTMLAttr(nsGkAtoms::type, aType);
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}
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void SetType(const nsAString& aType, ErrorResult& rv)
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{
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SetHTMLAttr(nsGkAtoms::type, aType, rv);
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}
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void GetSrcset(DOMString& aSrcset)
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{
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GetHTMLAttr(nsGkAtoms::srcset, aSrcset);
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}
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void SetSrcset(const nsAString& aSrcset, mozilla::ErrorResult& rv)
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{
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SetHTMLAttr(nsGkAtoms::srcset, aSrcset, rv);
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}
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void GetSizes(DOMString& aSizes)
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{
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GetHTMLAttr(nsGkAtoms::sizes, aSizes);
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}
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void SetSizes(const nsAString& aSizes, mozilla::ErrorResult& rv)
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{
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SetHTMLAttr(nsGkAtoms::sizes, aSizes, rv);
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}
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void GetMedia(DOMString& aMedia)
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{
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GetHTMLAttr(nsGkAtoms::media, aMedia);
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}
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void SetMedia(const nsAString& aMedia, mozilla::ErrorResult& rv)
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{
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SetHTMLAttr(nsGkAtoms::media, aMedia, rv);
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}
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protected:
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virtual ~HTMLSourceElement();
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virtual JSObject* WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
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protected:
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virtual nsresult AfterSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
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const nsAttrValue* aValue,
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const nsAttrValue* aOldValue,
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nsIPrincipal* aMaybeScriptedPrincipal,
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bool aNotify) override;
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private:
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RefPtr<nsMediaList> mMediaList;
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RefPtr<MediaSource> mSrcMediaSource;
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// Generates a new nsMediaList using the given input
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void UpdateMediaList(const nsAttrValue* aValue);
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_HTMLSourceElement_h
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