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https://github.com/mozilla/gecko-dev.git
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51758cfc9b
Same rg + sed shenanigans as the first patch. There were two that could fail, both due to OOM: * HTMLInputElement::AfterSetAttr: If we fail (only in the type=range case) we end up with an old value without it being clamped by min/max/step. * HTMLBodyElement::AfterSetAttr: If we fail we won't peek up the DocShell's frame margins and styling could be incorrect. That seems better than having to deal with broken states after we've already set the attribute. Depends on D176069 Differential Revision: https://phabricator.services.mozilla.com/D176070
294 lines
10 KiB
C++
294 lines
10 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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#include "mozilla/dom/HTMLIFrameElement.h"
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#include "mozilla/dom/ContentChild.h"
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#include "mozilla/dom/Document.h"
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#include "mozilla/dom/HTMLIFrameElementBinding.h"
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#include "mozilla/dom/FeaturePolicy.h"
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#include "mozilla/MappedDeclarations.h"
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#include "mozilla/NullPrincipal.h"
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#include "mozilla/StaticPrefs_dom.h"
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#include "nsMappedAttributes.h"
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#include "nsAttrValueInlines.h"
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#include "nsError.h"
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#include "nsStyleConsts.h"
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#include "nsContentUtils.h"
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#include "nsSandboxFlags.h"
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#include "nsNetUtil.h"
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NS_IMPL_NS_NEW_HTML_ELEMENT_CHECK_PARSER(IFrame)
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namespace mozilla::dom {
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NS_IMPL_CYCLE_COLLECTION_CLASS(HTMLIFrameElement)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(HTMLIFrameElement,
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nsGenericHTMLFrameElement)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFeaturePolicy)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSandbox)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(HTMLIFrameElement,
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nsGenericHTMLFrameElement)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mFeaturePolicy)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mSandbox)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_ADDREF_INHERITED(HTMLIFrameElement, nsGenericHTMLFrameElement)
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NS_IMPL_RELEASE_INHERITED(HTMLIFrameElement, nsGenericHTMLFrameElement)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(HTMLIFrameElement)
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NS_INTERFACE_MAP_END_INHERITING(nsGenericHTMLFrameElement)
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// static
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const DOMTokenListSupportedToken HTMLIFrameElement::sSupportedSandboxTokens[] =
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{
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#define SANDBOX_KEYWORD(string, atom, flags) string,
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#include "IframeSandboxKeywordList.h"
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#undef SANDBOX_KEYWORD
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nullptr};
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HTMLIFrameElement::HTMLIFrameElement(
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
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FromParser aFromParser)
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: nsGenericHTMLFrameElement(std::move(aNodeInfo), aFromParser) {
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// We always need a featurePolicy, even if not exposed.
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mFeaturePolicy = new mozilla::dom::FeaturePolicy(this);
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nsCOMPtr<nsIPrincipal> origin = GetFeaturePolicyDefaultOrigin();
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MOZ_ASSERT(origin);
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mFeaturePolicy->SetDefaultOrigin(origin);
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}
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HTMLIFrameElement::~HTMLIFrameElement() = default;
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NS_IMPL_ELEMENT_CLONE(HTMLIFrameElement)
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void HTMLIFrameElement::BindToBrowsingContext(BrowsingContext*) {
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RefreshFeaturePolicy(true /* parse the feature policy attribute */);
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}
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bool HTMLIFrameElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
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const nsAString& aValue,
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nsIPrincipal* aMaybeScriptedPrincipal,
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nsAttrValue& aResult) {
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if (aNamespaceID == kNameSpaceID_None) {
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if (aAttribute == nsGkAtoms::marginwidth) {
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return aResult.ParseNonNegativeIntValue(aValue);
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}
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if (aAttribute == nsGkAtoms::marginheight) {
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return aResult.ParseNonNegativeIntValue(aValue);
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}
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if (aAttribute == nsGkAtoms::width) {
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return aResult.ParseHTMLDimension(aValue);
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}
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if (aAttribute == nsGkAtoms::height) {
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return aResult.ParseHTMLDimension(aValue);
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}
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if (aAttribute == nsGkAtoms::frameborder) {
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return ParseFrameborderValue(aValue, aResult);
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}
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if (aAttribute == nsGkAtoms::scrolling) {
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return ParseScrollingValue(aValue, aResult);
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}
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if (aAttribute == nsGkAtoms::align) {
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return ParseAlignValue(aValue, aResult);
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}
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if (aAttribute == nsGkAtoms::sandbox) {
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aResult.ParseAtomArray(aValue);
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return true;
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}
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}
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return nsGenericHTMLFrameElement::ParseAttribute(
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aNamespaceID, aAttribute, aValue, aMaybeScriptedPrincipal, aResult);
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}
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void HTMLIFrameElement::MapAttributesIntoRule(
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const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls) {
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// frameborder: 0 | 1 (| NO | YES in quirks mode)
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// If frameborder is 0 or No, set border to 0
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// else leave it as the value set in html.css
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const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::frameborder);
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if (value && value->Type() == nsAttrValue::eEnum) {
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auto frameborder = static_cast<FrameBorderProperty>(value->GetEnumValue());
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if (FrameBorderProperty::No == frameborder ||
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FrameBorderProperty::Zero == frameborder) {
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aDecls.SetPixelValueIfUnset(eCSSProperty_border_top_width, 0.0f);
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aDecls.SetPixelValueIfUnset(eCSSProperty_border_right_width, 0.0f);
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aDecls.SetPixelValueIfUnset(eCSSProperty_border_bottom_width, 0.0f);
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aDecls.SetPixelValueIfUnset(eCSSProperty_border_left_width, 0.0f);
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}
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}
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nsGenericHTMLElement::MapImageSizeAttributesInto(aAttributes, aDecls);
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nsGenericHTMLElement::MapImageAlignAttributeInto(aAttributes, aDecls);
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nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aDecls);
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}
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NS_IMETHODIMP_(bool)
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HTMLIFrameElement::IsAttributeMapped(const nsAtom* aAttribute) const {
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static const MappedAttributeEntry attributes[] = {
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{nsGkAtoms::width},
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{nsGkAtoms::height},
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{nsGkAtoms::frameborder},
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{nullptr},
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};
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static const MappedAttributeEntry* const map[] = {
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attributes,
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sImageAlignAttributeMap,
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sCommonAttributeMap,
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};
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return FindAttributeDependence(aAttribute, map);
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}
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nsMapRuleToAttributesFunc HTMLIFrameElement::GetAttributeMappingFunction()
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const {
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return &MapAttributesIntoRule;
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}
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void HTMLIFrameElement::AfterSetAttr(int32_t aNameSpaceID, nsAtom* 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) {
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AfterMaybeChangeAttr(aNameSpaceID, aName, aNotify);
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if (aNameSpaceID == kNameSpaceID_None) {
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if (aName == nsGkAtoms::sandbox) {
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if (mFrameLoader) {
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// If we have an nsFrameLoader, apply the new sandbox flags.
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// Since this is called after the setter, the sandbox flags have
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// alreay been updated.
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mFrameLoader->ApplySandboxFlags(GetSandboxFlags());
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}
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}
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if (aName == nsGkAtoms::allow || aName == nsGkAtoms::src ||
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aName == nsGkAtoms::srcdoc || aName == nsGkAtoms::sandbox) {
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RefreshFeaturePolicy(true /* parse the feature policy attribute */);
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} else if (aName == nsGkAtoms::allowfullscreen) {
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RefreshFeaturePolicy(false /* parse the feature policy attribute */);
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}
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}
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return nsGenericHTMLFrameElement::AfterSetAttr(
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aNameSpaceID, aName, aValue, aOldValue, aMaybeScriptedPrincipal, aNotify);
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}
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void HTMLIFrameElement::OnAttrSetButNotChanged(
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int32_t aNamespaceID, nsAtom* aName, const nsAttrValueOrString& aValue,
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bool aNotify) {
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AfterMaybeChangeAttr(aNamespaceID, aName, aNotify);
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return nsGenericHTMLFrameElement::OnAttrSetButNotChanged(aNamespaceID, aName,
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aValue, aNotify);
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}
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void HTMLIFrameElement::AfterMaybeChangeAttr(int32_t aNamespaceID,
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nsAtom* aName, bool aNotify) {
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if (aNamespaceID == kNameSpaceID_None) {
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if (aName == nsGkAtoms::srcdoc) {
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// Don't propagate errors from LoadSrc. The attribute was successfully
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// set/unset, that's what we should reflect.
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LoadSrc();
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}
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}
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}
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uint32_t HTMLIFrameElement::GetSandboxFlags() const {
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const nsAttrValue* sandboxAttr = GetParsedAttr(nsGkAtoms::sandbox);
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// No sandbox attribute, no sandbox flags.
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if (!sandboxAttr) {
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return SANDBOXED_NONE;
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}
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return nsContentUtils::ParseSandboxAttributeToFlags(sandboxAttr);
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}
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JSObject* HTMLIFrameElement::WrapNode(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return HTMLIFrameElement_Binding::Wrap(aCx, this, aGivenProto);
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}
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mozilla::dom::FeaturePolicy* HTMLIFrameElement::FeaturePolicy() const {
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return mFeaturePolicy;
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}
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void HTMLIFrameElement::MaybeStoreCrossOriginFeaturePolicy() {
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if (!mFrameLoader) {
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return;
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}
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// If the browsingContext is not ready (because docshell is dead), don't try
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// to create one.
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if (!mFrameLoader->IsRemoteFrame() && !mFrameLoader->GetExistingDocShell()) {
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return;
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}
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RefPtr<BrowsingContext> browsingContext = mFrameLoader->GetBrowsingContext();
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if (!browsingContext || !browsingContext->IsContentSubframe()) {
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return;
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}
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if (ContentChild* cc = ContentChild::GetSingleton()) {
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Unused << cc->SendSetContainerFeaturePolicy(browsingContext,
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mFeaturePolicy);
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}
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}
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already_AddRefed<nsIPrincipal>
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HTMLIFrameElement::GetFeaturePolicyDefaultOrigin() const {
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nsCOMPtr<nsIPrincipal> principal;
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if (HasAttr(kNameSpaceID_None, nsGkAtoms::srcdoc)) {
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principal = NodePrincipal();
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return principal.forget();
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}
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nsCOMPtr<nsIURI> nodeURI;
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if (GetURIAttr(nsGkAtoms::src, nullptr, getter_AddRefs(nodeURI)) && nodeURI) {
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principal = BasePrincipal::CreateContentPrincipal(
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nodeURI, BasePrincipal::Cast(NodePrincipal())->OriginAttributesRef());
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}
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if (!principal) {
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principal = NodePrincipal();
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}
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return principal.forget();
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}
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void HTMLIFrameElement::RefreshFeaturePolicy(bool aParseAllowAttribute) {
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if (aParseAllowAttribute) {
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mFeaturePolicy->ResetDeclaredPolicy();
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// The origin can change if 'src' and 'srcdoc' attributes change.
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nsCOMPtr<nsIPrincipal> origin = GetFeaturePolicyDefaultOrigin();
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MOZ_ASSERT(origin);
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mFeaturePolicy->SetDefaultOrigin(origin);
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nsAutoString allow;
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GetAttr(nsGkAtoms::allow, allow);
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if (!allow.IsEmpty()) {
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// Set or reset the FeaturePolicy directives.
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mFeaturePolicy->SetDeclaredPolicy(OwnerDoc(), allow, NodePrincipal(),
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origin);
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}
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}
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if (AllowFullscreen()) {
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mFeaturePolicy->MaybeSetAllowedPolicy(u"fullscreen"_ns);
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}
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mFeaturePolicy->InheritPolicy(OwnerDoc()->FeaturePolicy());
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MaybeStoreCrossOriginFeaturePolicy();
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}
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} // namespace mozilla::dom
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