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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
#include "nsAttrValue.h"
#include "nsAttrValueOrString.h"
#include "nsGenericHTMLElement.h"
#include "nsGkAtoms.h"
#include "nsStyleConsts.h"
#include "mozilla/dom/Document.h"
#include "nsNetUtil.h"
#include "nsContentUtils.h"
#include "nsUnicharUtils.h" // for nsCaseInsensitiveStringComparator()
#include "nsIScriptContext.h"
#include "nsIScriptGlobalObject.h"
#include "nsServiceManagerUtils.h"
#include "nsError.h"
#include "nsTArray.h"
#include "nsDOMJSUtils.h"
#include "nsIScriptError.h"
#include "nsISupportsImpl.h"
#include "nsDOMTokenList.h"
#include "mozilla/dom/FetchPriority.h"
#include "mozilla/dom/HTMLScriptElement.h"
#include "mozilla/dom/HTMLScriptElementBinding.h"
#include "mozilla/dom/TrustedTypeUtils.h"
#include "mozilla/dom/TrustedTypesConstants.h"
#include "mozilla/Assertions.h"
#include "mozilla/StaticPrefs_dom.h"
NS_IMPL_NS_NEW_HTML_ELEMENT_CHECK_PARSER(Script)
using JS::loader::ScriptKind;
namespace mozilla::dom {
JSObject* HTMLScriptElement::WrapNode(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return HTMLScriptElement_Binding::Wrap(aCx, this, aGivenProto);
}
HTMLScriptElement::HTMLScriptElement(
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
FromParser aFromParser)
: nsGenericHTMLElement(std::move(aNodeInfo)), ScriptElement(aFromParser) {
AddMutationObserver(this);
}
HTMLScriptElement::~HTMLScriptElement() = default;
NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED(HTMLScriptElement,
nsGenericHTMLElement,
nsIScriptLoaderObserver,
nsIScriptElement,
nsIMutationObserver)
NS_IMPL_CYCLE_COLLECTION_INHERITED(HTMLScriptElement, nsGenericHTMLElement,
mBlocking)
nsresult HTMLScriptElement::BindToTree(BindContext& aContext,
nsINode& aParent) {
nsresult rv = nsGenericHTMLElement::BindToTree(aContext, aParent);
NS_ENSURE_SUCCESS(rv, rv);
if (IsInComposedDoc()) {
MaybeProcessScript();
}
return NS_OK;
}
bool HTMLScriptElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
const nsAString& aValue,
nsIPrincipal* aMaybeScriptedPrincipal,
nsAttrValue& aResult) {
if (aNamespaceID == kNameSpaceID_None) {
if (aAttribute == nsGkAtoms::crossorigin) {
ParseCORSValue(aValue, aResult);
return true;
}
if (aAttribute == nsGkAtoms::integrity) {
aResult.ParseStringOrAtom(aValue);
return true;
}
if (aAttribute == nsGkAtoms::fetchpriority) {
ParseFetchPriority(aValue, aResult);
return true;
}
if (aAttribute == nsGkAtoms::blocking &&
StaticPrefs::dom_element_blocking_enabled()) {
aResult.ParseAtomArray(aValue);
return true;
}
}
return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
aMaybeScriptedPrincipal, aResult);
}
nsresult HTMLScriptElement::Clone(dom::NodeInfo* aNodeInfo,
nsINode** aResult) const {
*aResult = nullptr;
HTMLScriptElement* it = new (aNodeInfo->NodeInfoManager())
HTMLScriptElement(do_AddRef(aNodeInfo), NOT_FROM_PARSER);
nsCOMPtr<nsINode> kungFuDeathGrip = it;
nsresult rv = const_cast<HTMLScriptElement*>(this)->CopyInnerTo(it);
NS_ENSURE_SUCCESS(rv, rv);
// The clone should be marked evaluated if we are.
it->mAlreadyStarted = mAlreadyStarted;
it->mLineNumber = mLineNumber;
it->mMalformed = mMalformed;
kungFuDeathGrip.swap(*aResult);
return NS_OK;
}
void HTMLScriptElement::AfterSetAttr(int32_t aNamespaceID, nsAtom* aName,
const nsAttrValue* aValue,
const nsAttrValue* aOldValue,
nsIPrincipal* aMaybeScriptedPrincipal,
bool aNotify) {
if (nsGkAtoms::async == aName && kNameSpaceID_None == aNamespaceID) {
mForceAsync = false;
}
if (nsGkAtoms::src == aName && kNameSpaceID_None == aNamespaceID) {
mSrcTriggeringPrincipal = nsContentUtils::GetAttrTriggeringPrincipal(
this, aValue ? aValue->GetStringValue() : EmptyString(),
aMaybeScriptedPrincipal);
}
return nsGenericHTMLElement::AfterSetAttr(
aNamespaceID, aName, aValue, aOldValue, aMaybeScriptedPrincipal, aNotify);
}
void HTMLScriptElement::GetInnerHTML(nsAString& aInnerHTML,
OOMReporter& aError) {
if (!nsContentUtils::GetNodeTextContent(this, false, aInnerHTML, fallible)) {
aError.ReportOOM();
}
}
void HTMLScriptElement::SetInnerHTMLTrusted(const nsAString& aInnerHTML,
nsIPrincipal* aSubjectPrincipal,
ErrorResult& aError) {
aError = nsContentUtils::SetNodeTextContent(this, aInnerHTML, true);
}
void HTMLScriptElement::GetText(nsAString& aValue, ErrorResult& aRv) const {
if (!nsContentUtils::GetNodeTextContent(this, false, aValue, fallible)) {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
}
}
void HTMLScriptElement::GetText(OwningTrustedScriptOrString& aValue,
ErrorResult& aRv) const {
GetText(aValue.SetAsString(), aRv);
}
void HTMLScriptElement::SetText(const TrustedScriptOrString& aValue,
ErrorResult& aRv) {
constexpr nsLiteralString sink = u"HTMLScriptElement text"_ns;
Maybe<nsAutoString> compliantStringHolder;
const nsAString* compliantString =
TrustedTypeUtils::GetTrustedTypesCompliantString(
aValue, sink, kTrustedTypesOnlySinkGroup, *this,
compliantStringHolder, aRv);
if (aRv.Failed()) {
return;
}
aRv = nsContentUtils::SetNodeTextContent(this, *compliantString, true);
}
void HTMLScriptElement::GetInnerText(
OwningTrustedScriptOrNullIsEmptyString& aValue, ErrorResult& aError) {
DOMString innerText;
nsGenericHTMLElement::GetInnerText(innerText, aError);
if (aError.Failed()) {
return;
}
aValue.SetAsNullIsEmptyString() = innerText.AsAString();
}
void HTMLScriptElement::SetInnerText(
const TrustedScriptOrNullIsEmptyString& aValue, ErrorResult& aError) {
constexpr nsLiteralString sink = u"HTMLScriptElement innerText"_ns;
Maybe<nsAutoString> compliantStringHolder;
const nsAString* compliantString =
TrustedTypeUtils::GetTrustedTypesCompliantString(
aValue, sink, kTrustedTypesOnlySinkGroup, *this,
compliantStringHolder, aError);
if (aError.Failed()) {
return;
}
nsGenericHTMLElement::SetInnerText(*compliantString);
}
void HTMLScriptElement::GetTextContent(
Nullable<OwningTrustedScriptOrString>& aTextContent,
mozilla::OOMReporter& aError) {
FragmentOrElement::GetTextContentInternal(
aTextContent.SetValue().SetAsString(), aError);
}
void HTMLScriptElement::SetTextContent(
const Nullable<TrustedScriptOrString>& aTextContent,
nsIPrincipal* aSubjectPrincipal, mozilla::ErrorResult& aError) {
constexpr nsLiteralString sink = u"HTMLScriptElement textContent"_ns;
Maybe<nsAutoString> compliantStringHolder;
if (aTextContent.IsNull()) {
Nullable<TrustedScriptOrString> emptyString;
emptyString.SetValue().SetStringLiteral(u"");
SetTextContent(emptyString, aSubjectPrincipal, aError);
return;
}
const nsAString* compliantString =
TrustedTypeUtils::GetTrustedTypesCompliantString(
aTextContent.Value(), sink, kTrustedTypesOnlySinkGroup, *this,
compliantStringHolder, aError);
if (aError.Failed()) {
return;
}
SetTextContentInternal(*compliantString, aSubjectPrincipal, aError);
}
void HTMLScriptElement::SetTextContent(
const Nullable<TrustedScriptOrString>& aTextContent,
mozilla::ErrorResult& aError) {
SetTextContent(aTextContent, nullptr, aError);
}
void HTMLScriptElement::GetSrc(OwningTrustedScriptURLOrString& aSrc) {
GetURIAttr(nsGkAtoms::src, nullptr, aSrc.SetAsString());
}
void HTMLScriptElement::SetSrc(const TrustedScriptURLOrString& aSrc,
nsIPrincipal* aTriggeringPrincipal,
ErrorResult& aRv) {
constexpr nsLiteralString sink = u"HTMLScriptElement src"_ns;
Maybe<nsAutoString> compliantStringHolder;
const nsAString* compliantString =
TrustedTypeUtils::GetTrustedTypesCompliantString(
aSrc, sink, kTrustedTypesOnlySinkGroup, *this, compliantStringHolder,
aRv);
if (aRv.Failed()) {
return;
}
SetHTMLAttr(nsGkAtoms::src, *compliantString, aTriggeringPrincipal, aRv);
}
// variation of this code in SVGScriptElement - check if changes
// need to be transfered when modifying
void HTMLScriptElement::GetScriptText(nsAString& text) const {
GetText(text, IgnoreErrors());
}
void HTMLScriptElement::GetScriptCharset(nsAString& charset) {
GetCharset(charset);
}
void HTMLScriptElement::FreezeExecutionAttrs(const Document* aOwnerDoc) {
if (mFrozen) {
return;
}
// Determine whether this is a(n) classic/module/importmap script.
DetermineKindFromType(aOwnerDoc);
// variation of this code in SVGScriptElement - check if changes
// need to be transfered when modifying. Note that we don't use GetSrc here
// because it will return the base URL when the attr value is "".
nsAutoString src;
if (GetAttr(nsGkAtoms::src, src)) {
SourceLocation loc{OwnerDoc()->GetDocumentURI(), GetScriptLineNumber(),
GetScriptColumnNumber().oneOriginValue()};
// Empty src should be treated as invalid URL.
if (!src.IsEmpty()) {
nsContentUtils::NewURIWithDocumentCharset(getter_AddRefs(mUri), src,
OwnerDoc(), GetBaseURI());
if (!mUri) {
AutoTArray<nsString, 2> params = {u"src"_ns, src};
nsContentUtils::ReportToConsole(nsIScriptError::warningFlag, "HTML"_ns,
OwnerDoc(),
nsContentUtils::eDOM_PROPERTIES,
"ScriptSourceInvalidUri", params, loc);
}
} else {
AutoTArray<nsString, 1> params = {u"src"_ns};
nsContentUtils::ReportToConsole(
nsIScriptError::warningFlag, "HTML"_ns, OwnerDoc(),
nsContentUtils::eDOM_PROPERTIES, "ScriptSourceEmpty", params, loc);
}
// At this point mUri will be null for invalid URLs.
mExternal = true;
}
bool async = (mExternal || mKind == ScriptKind::eModule) && Async();
bool defer = mExternal && Defer();
mDefer = !async && defer;
mAsync = async;
mFrozen = true;
}
CORSMode HTMLScriptElement::GetCORSMode() const {
return AttrValueToCORSMode(GetParsedAttr(nsGkAtoms::crossorigin));
}
FetchPriority HTMLScriptElement::GetFetchPriority() const {
return nsGenericHTMLElement::GetFetchPriority();
}
mozilla::dom::ReferrerPolicy HTMLScriptElement::GetReferrerPolicy() {
return GetReferrerPolicyAsEnum();
}
bool HTMLScriptElement::HasScriptContent() {
return (mFrozen ? mExternal : HasAttr(nsGkAtoms::src)) ||
nsContentUtils::HasNonEmptyTextContent(this);
}
/* static */
bool HTMLScriptElement::Supports(const GlobalObject& aGlobal,
const nsAString& aType) {
nsAutoString type(aType);
return aType.EqualsLiteral("classic") || aType.EqualsLiteral("module") ||
aType.EqualsLiteral("importmap");
}
nsDOMTokenList* HTMLScriptElement::Blocking() {
if (!mBlocking) {
mBlocking =
new nsDOMTokenList(this, nsGkAtoms::blocking, sSupportedBlockingValues);
}
return mBlocking;
}
bool HTMLScriptElement::IsPotentiallyRenderBlocking() {
return BlockingContainsRender();
// TODO: handle implicitly potentially render blocking
// A script element el is implicitly potentially render-blocking if el's type
// is "classic", el is parser-inserted, and el does not have an async or defer
// attribute.
}
} // namespace mozilla::dom