diff options
Diffstat (limited to 'dom/html/HTMLScriptElement.cpp')
| -rw-r--r-- | dom/html/HTMLScriptElement.cpp | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/dom/html/HTMLScriptElement.cpp b/dom/html/HTMLScriptElement.cpp new file mode 100644 index 0000000000..dda12ffe16 --- /dev/null +++ b/dom/html/HTMLScriptElement.cpp @@ -0,0 +1,268 @@ +/* -*- 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/. */ + +#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 "mozilla/dom/HTMLScriptElement.h" +#include "mozilla/dom/HTMLScriptElementBinding.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_INHERITED(HTMLScriptElement, nsGenericHTMLElement, + nsIScriptLoaderObserver, nsIScriptElement, + nsIMutationObserver) + +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; + } + } + + 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::SetInnerHTML(const nsAString& aInnerHTML, + nsIPrincipal* aScriptedPrincipal, + 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::SetText(const nsAString& aValue, ErrorResult& aRv) { + aRv = nsContentUtils::SetNodeTextContent(this, aValue, true); +} + +// variation of this code in SVGScriptElement - check if changes +// need to be transfered when modifying + +bool HTMLScriptElement::GetScriptType(nsAString& aType) { + nsAutoString type; + if (!GetAttr(kNameSpaceID_None, nsGkAtoms::type, type)) { + return false; + } + + // ASCII whitespace https://infra.spec.whatwg.org/#ascii-whitespace: + // U+0009 TAB, U+000A LF, U+000C FF, U+000D CR, or U+0020 SPACE. + static const char kASCIIWhitespace[] = "\t\n\f\r "; + + const bool wasEmptyBeforeTrim = type.IsEmpty(); + type.Trim(kASCIIWhitespace); + + // If the value before trim was not empty and the value is now empty, do not + // trim as we want to retain pure whitespace (by restoring original value) + // because we need to treat "" and " " (etc) differently. + if (!wasEmptyBeforeTrim && type.IsEmpty()) { + return GetAttr(kNameSpaceID_None, nsGkAtoms::type, aType); + } + + aType.Assign(type); + return true; +} + +void HTMLScriptElement::GetScriptText(nsAString& text) const { + GetText(text, IgnoreErrors()); +} + +void HTMLScriptElement::GetScriptCharset(nsAString& charset) { + GetCharset(charset); +} + +void HTMLScriptElement::FreezeExecutionAttrs(Document* aOwnerDoc) { + if (mFrozen) { + return; + } + + MOZ_ASSERT((mKind != ScriptKind::eModule) && + (mKind != ScriptKind::eImportMap) && !mAsync && !mDefer && + !mExternal); + + // Determine whether this is a(n) classic/module/importmap script. + nsAutoString type; + GetScriptType(type); + if (!type.IsEmpty()) { + if (aOwnerDoc->ModuleScriptsEnabled() && + type.LowerCaseEqualsASCII("module")) { + mKind = ScriptKind::eModule; + } + + // https://html.spec.whatwg.org/multipage/scripting.html#prepare-the-script-element + // Step 11. Otherwise, if the script block's type string is an ASCII + // case-insensitive match for the string "importmap", then set el's type to + // "importmap". + if (aOwnerDoc->ImportMapsEnabled() && + type.LowerCaseEqualsASCII("importmap")) { + mKind = ScriptKind::eImportMap; + } + } + + // 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(kNameSpaceID_None, nsGkAtoms::src, src)) { + // 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, + nullptr, u""_ns, GetScriptLineNumber(), GetScriptColumnNumber()); + } + } else { + AutoTArray<nsString, 1> params = {u"src"_ns}; + + nsContentUtils::ReportToConsole( + nsIScriptError::warningFlag, "HTML"_ns, OwnerDoc(), + nsContentUtils::eDOM_PROPERTIES, "ScriptSourceEmpty", params, nullptr, + u""_ns, GetScriptLineNumber(), GetScriptColumnNumber()); + } + + // 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)); +} + +mozilla::dom::ReferrerPolicy HTMLScriptElement::GetReferrerPolicy() { + return GetReferrerPolicyAsEnum(); +} + +bool HTMLScriptElement::HasScriptContent() { + return (mFrozen ? mExternal : HasAttr(kNameSpaceID_None, nsGkAtoms::src)) || + nsContentUtils::HasNonEmptyTextContent(this); +} + +// https://html.spec.whatwg.org/multipage/scripting.html#dom-script-supports +/* static */ +bool HTMLScriptElement::Supports(const GlobalObject& aGlobal, + const nsAString& aType) { + nsAutoString type(aType); + return aType.EqualsLiteral("classic") || aType.EqualsLiteral("module") || + (StaticPrefs::dom_importMaps_enabled() && + aType.EqualsLiteral("importmap")); +} + +} // namespace mozilla::dom |