Index: Source/core/dom/ScriptElement.cpp |
diff --git a/Source/core/dom/ScriptElement.cpp b/Source/core/dom/ScriptElement.cpp |
deleted file mode 100644 |
index 2c0ca9073796343041ec7f10feb87adbeaffb095..0000000000000000000000000000000000000000 |
--- a/Source/core/dom/ScriptElement.cpp |
+++ /dev/null |
@@ -1,432 +0,0 @@ |
-/* |
- * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
- * (C) 1999 Antti Koivisto (koivisto@kde.org) |
- * (C) 2001 Dirk Mueller (mueller@kde.org) |
- * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. |
- * Copyright (C) 2008 Nikolas Zimmermann <zimmermann@kde.org> |
- * |
- * This library is free software; you can redistribute it and/or |
- * modify it under the terms of the GNU Library General Public |
- * License as published by the Free Software Foundation; either |
- * version 2 of the License, or (at your option) any later version. |
- * |
- * This library is distributed in the hope that it will be useful, |
- * but WITHOUT ANY WARRANTY; without even the implied warranty of |
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
- * Library General Public License for more details. |
- * |
- * You should have received a copy of the GNU Library General Public License |
- * along with this library; see the file COPYING.LIB. If not, write to |
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
- * Boston, MA 02110-1301, USA. |
- */ |
- |
-#include "config.h" |
-#include "core/dom/ScriptElement.h" |
- |
-#include "HTMLNames.h" |
-#include "SVGNames.h" |
-#include "bindings/v8/ScriptController.h" |
-#include "bindings/v8/ScriptSourceCode.h" |
-#include "core/dom/Document.h" |
-#include "core/dom/Event.h" |
-#include "core/dom/IgnoreDestructiveWriteCountIncrementer.h" |
-#include "core/dom/ScriptRunner.h" |
-#include "core/dom/ScriptableDocumentParser.h" |
-#include "core/dom/Text.h" |
-#include "core/html/HTMLScriptElement.h" |
-#include "core/html/parser/HTMLParserIdioms.h" |
-#include "core/loader/cache/CachedResourceLoader.h" |
-#include "core/loader/cache/CachedResourceRequest.h" |
-#include "core/loader/cache/CachedScript.h" |
-#include "core/page/ContentSecurityPolicy.h" |
-#include "core/page/Frame.h" |
-#include "core/platform/MIMETypeRegistry.h" |
-#include "core/svg/SVGScriptElement.h" |
-#include "weborigin/SecurityOrigin.h" |
-#include "wtf/StdLibExtras.h" |
-#include "wtf/text/StringBuilder.h" |
-#include "wtf/text/StringHash.h" |
-#include "wtf/text/TextPosition.h" |
- |
-namespace WebCore { |
- |
-ScriptElement::ScriptElement(Element* element, bool parserInserted, bool alreadyStarted) |
- : m_element(element) |
- , m_cachedScript(0) |
- , m_startLineNumber(WTF::OrdinalNumber::beforeFirst()) |
- , m_parserInserted(parserInserted) |
- , m_isExternalScript(false) |
- , m_alreadyStarted(alreadyStarted) |
- , m_haveFiredLoad(false) |
- , m_willBeParserExecuted(false) |
- , m_readyToBeParserExecuted(false) |
- , m_willExecuteWhenDocumentFinishedParsing(false) |
- , m_forceAsync(!parserInserted) |
- , m_willExecuteInOrder(false) |
-{ |
- ASSERT(m_element); |
- if (parserInserted && element->document()->scriptableDocumentParser() && !element->document()->isInDocumentWrite()) |
- m_startLineNumber = element->document()->scriptableDocumentParser()->lineNumber(); |
-} |
- |
-ScriptElement::~ScriptElement() |
-{ |
- stopLoadRequest(); |
-} |
- |
-void ScriptElement::insertedInto(ContainerNode* insertionPoint) |
-{ |
- if (insertionPoint->inDocument() && !m_parserInserted) |
- prepareScript(); // FIXME: Provide a real starting line number here. |
-} |
- |
-void ScriptElement::childrenChanged() |
-{ |
- if (!m_parserInserted && m_element->inDocument()) |
- prepareScript(); // FIXME: Provide a real starting line number here. |
-} |
- |
-void ScriptElement::handleSourceAttribute(const String& sourceUrl) |
-{ |
- if (ignoresLoadRequest() || sourceUrl.isEmpty()) |
- return; |
- |
- prepareScript(); // FIXME: Provide a real starting line number here. |
-} |
- |
-void ScriptElement::handleAsyncAttribute() |
-{ |
- m_forceAsync = false; |
-} |
- |
-// Helper function |
-static bool isLegacySupportedJavaScriptLanguage(const String& language) |
-{ |
- // Mozilla 1.8 accepts javascript1.0 - javascript1.7, but WinIE 7 accepts only javascript1.1 - javascript1.3. |
- // Mozilla 1.8 and WinIE 7 both accept javascript and livescript. |
- // WinIE 7 accepts ecmascript and jscript, but Mozilla 1.8 doesn't. |
- // Neither Mozilla 1.8 nor WinIE 7 accept leading or trailing whitespace. |
- // We want to accept all the values that either of these browsers accept, but not other values. |
- |
- // FIXME: This function is not HTML5 compliant. These belong in the MIME registry as "text/javascript<version>" entries. |
- typedef HashSet<String, CaseFoldingHash> LanguageSet; |
- DEFINE_STATIC_LOCAL(LanguageSet, languages, ()); |
- if (languages.isEmpty()) { |
- languages.add("javascript"); |
- languages.add("javascript"); |
- languages.add("javascript1.0"); |
- languages.add("javascript1.1"); |
- languages.add("javascript1.2"); |
- languages.add("javascript1.3"); |
- languages.add("javascript1.4"); |
- languages.add("javascript1.5"); |
- languages.add("javascript1.6"); |
- languages.add("javascript1.7"); |
- languages.add("livescript"); |
- languages.add("ecmascript"); |
- languages.add("jscript"); |
- } |
- |
- return languages.contains(language); |
-} |
- |
-void ScriptElement::dispatchErrorEvent() |
-{ |
- m_element->dispatchEvent(Event::create(eventNames().errorEvent, false, false)); |
-} |
- |
-void ScriptElement::dispatchLoadEvent() |
-{ |
- ASSERT(!haveFiredLoadEvent()); |
- if (ScriptElementClient* client = this->client()) |
- client->dispatchLoadEvent(); |
- setHaveFiredLoadEvent(true); |
-} |
- |
-bool ScriptElement::isScriptTypeSupported(LegacyTypeSupport supportLegacyTypes) const |
-{ |
- // FIXME: isLegacySupportedJavaScriptLanguage() is not valid HTML5. It is used here to maintain backwards compatibility with existing layout tests. The specific violations are: |
- // - Allowing type=javascript. type= should only support MIME types, such as text/javascript. |
- // - Allowing a different set of languages for language= and type=. language= supports Javascript 1.1 and 1.4-1.6, but type= does not. |
- |
- String type = client()->typeAttributeValue(); |
- String language = client()->languageAttributeValue(); |
- if (type.isEmpty() && language.isEmpty()) |
- return true; // Assume text/javascript. |
- if (type.isEmpty()) { |
- type = "text/" + language.lower(); |
- if (MIMETypeRegistry::isSupportedJavaScriptMIMEType(type) || isLegacySupportedJavaScriptLanguage(language)) |
- return true; |
- } else if (MIMETypeRegistry::isSupportedJavaScriptMIMEType(type.stripWhiteSpace().lower()) || (supportLegacyTypes == AllowLegacyTypeInTypeAttribute && isLegacySupportedJavaScriptLanguage(type))) |
- return true; |
- return false; |
-} |
- |
-// http://dev.w3.org/html5/spec/Overview.html#prepare-a-script |
-bool ScriptElement::prepareScript(const TextPosition& scriptStartPosition, LegacyTypeSupport supportLegacyTypes) |
-{ |
- if (m_alreadyStarted) |
- return false; |
- |
- ScriptElementClient* client = this->client(); |
- |
- bool wasParserInserted; |
- if (m_parserInserted) { |
- wasParserInserted = true; |
- m_parserInserted = false; |
- } else |
- wasParserInserted = false; |
- |
- if (wasParserInserted && !client->asyncAttributeValue()) |
- m_forceAsync = true; |
- |
- // FIXME: HTML5 spec says we should check that all children are either comments or empty text nodes. |
- if (!client->hasSourceAttribute() && !m_element->firstChild()) |
- return false; |
- |
- if (!m_element->inDocument()) |
- return false; |
- |
- if (!isScriptTypeSupported(supportLegacyTypes)) |
- return false; |
- |
- if (wasParserInserted) { |
- m_parserInserted = true; |
- m_forceAsync = false; |
- } |
- |
- m_alreadyStarted = true; |
- |
- // FIXME: If script is parser inserted, verify it's still in the original document. |
- Document* document = m_element->document(); |
- |
- // FIXME: Eventually we'd like to evaluate scripts which are inserted into a |
- // viewless document but this'll do for now. |
- // See http://bugs.webkit.org/show_bug.cgi?id=5727 |
- if (!document->frame()) |
- return false; |
- |
- if (!document->frame()->script()->canExecuteScripts(AboutToExecuteScript)) |
- return false; |
- |
- if (!isScriptForEventSupported()) |
- return false; |
- |
- if (!client->charsetAttributeValue().isEmpty()) |
- m_characterEncoding = client->charsetAttributeValue(); |
- else |
- m_characterEncoding = document->charset(); |
- |
- if (client->hasSourceAttribute()) |
- if (!requestScript(client->sourceAttributeValue())) |
- return false; |
- |
- if (client->hasSourceAttribute() && client->deferAttributeValue() && m_parserInserted && !client->asyncAttributeValue()) { |
- m_willExecuteWhenDocumentFinishedParsing = true; |
- m_willBeParserExecuted = true; |
- } else if (client->hasSourceAttribute() && m_parserInserted && !client->asyncAttributeValue()) |
- m_willBeParserExecuted = true; |
- else if (!client->hasSourceAttribute() && m_parserInserted && !document->haveStylesheetsAndImportsLoaded()) { |
- m_willBeParserExecuted = true; |
- m_readyToBeParserExecuted = true; |
- } else if (client->hasSourceAttribute() && !client->asyncAttributeValue() && !m_forceAsync) { |
- m_willExecuteInOrder = true; |
- document->scriptRunner()->queueScriptForExecution(this, m_cachedScript, ScriptRunner::IN_ORDER_EXECUTION); |
- m_cachedScript->addClient(this); |
- } else if (client->hasSourceAttribute()) { |
- document->scriptRunner()->queueScriptForExecution(this, m_cachedScript, ScriptRunner::ASYNC_EXECUTION); |
- m_cachedScript->addClient(this); |
- } else { |
- // Reset line numbering for nested writes. |
- TextPosition position = document->isInDocumentWrite() ? TextPosition() : scriptStartPosition; |
- KURL scriptURL = (!document->isInDocumentWrite() && m_parserInserted) ? document->url() : KURL(); |
- executeScript(ScriptSourceCode(scriptContent(), scriptURL, position)); |
- } |
- |
- return true; |
-} |
- |
-bool ScriptElement::requestScript(const String& sourceUrl) |
-{ |
- ASSERT(m_element); |
- |
- RefPtr<Document> originalDocument = m_element->document(); |
- if (!m_element->dispatchBeforeLoadEvent(sourceUrl)) |
- return false; |
- if (!m_element->inDocument() || m_element->document() != originalDocument) |
- return false; |
- |
- ASSERT(!m_cachedScript); |
- if (!stripLeadingAndTrailingHTMLSpaces(sourceUrl).isEmpty()) { |
- CachedResourceRequest request(ResourceRequest(m_element->document()->completeURL(sourceUrl)), m_element->localName()); |
- |
- String crossOriginMode = m_element->fastGetAttribute(HTMLNames::crossoriginAttr); |
- if (!crossOriginMode.isNull()) { |
- StoredCredentials allowCredentials = equalIgnoringCase(crossOriginMode, "use-credentials") ? AllowStoredCredentials : DoNotAllowStoredCredentials; |
- request.setPotentiallyCrossOriginEnabled(m_element->document()->securityOrigin(), allowCredentials); |
- } |
- request.setCharset(scriptCharset()); |
- |
- bool isValidScriptNonce = m_element->document()->contentSecurityPolicy()->allowScriptNonce(m_element->fastGetAttribute(HTMLNames::nonceAttr)); |
- if (isValidScriptNonce) |
- request.setContentSecurityCheck(DoNotCheckContentSecurityPolicy); |
- |
- m_cachedScript = m_element->document()->cachedResourceLoader()->requestScript(request); |
- m_isExternalScript = true; |
- } |
- |
- if (m_cachedScript) { |
- return true; |
- } |
- |
- dispatchErrorEvent(); |
- return false; |
-} |
- |
-bool isHTMLScriptElement(Element* element) |
-{ |
- return element->hasTagName(HTMLNames::scriptTag); |
-} |
- |
-bool isSVGScriptElement(Element* element) |
-{ |
- return element->hasTagName(SVGNames::scriptTag); |
-} |
- |
-void ScriptElement::executeScript(const ScriptSourceCode& sourceCode) |
-{ |
- ASSERT(m_alreadyStarted); |
- |
- if (sourceCode.isEmpty()) |
- return; |
- |
- RefPtr<Document> document = m_element->document(); |
- Frame* frame = document->frame(); |
- |
- bool shouldBypassMainWorldContentSecurityPolicy = (frame && frame->script()->shouldBypassMainWorldContentSecurityPolicy()) || document->contentSecurityPolicy()->allowScriptNonce(m_element->fastGetAttribute(HTMLNames::nonceAttr)); |
- |
- if (!m_isExternalScript && (!shouldBypassMainWorldContentSecurityPolicy && !document->contentSecurityPolicy()->allowInlineScript(document->url(), m_startLineNumber))) |
- return; |
- |
- if (m_isExternalScript && m_cachedScript && !m_cachedScript->mimeTypeAllowedByNosniff()) { |
- document->addConsoleMessage(SecurityMessageSource, ErrorMessageLevel, "Refused to execute script from '" + m_cachedScript->url().elidedString() + "' because its MIME type ('" + m_cachedScript->mimeType() + "') is not executable, and strict MIME type checking is enabled."); |
- return; |
- } |
- |
- if (frame) { |
- { |
- IgnoreDestructiveWriteCountIncrementer ignoreDesctructiveWriteCountIncrementer(m_isExternalScript ? document.get() : 0); |
- |
- if (isHTMLScriptElement(m_element)) |
- document->pushCurrentScript(toHTMLScriptElement(m_element)); |
- |
- // Create a script from the script element node, using the script |
- // block's source and the script block's type. |
- // Note: This is where the script is compiled and actually executed. |
- frame->script()->executeScriptInMainWorld(sourceCode); |
- |
- if (isHTMLScriptElement(m_element)) { |
- ASSERT(document->currentScript() == m_element); |
- document->popCurrentScript(); |
- } |
- } |
- } |
-} |
- |
-void ScriptElement::stopLoadRequest() |
-{ |
- if (m_cachedScript) { |
- if (!m_willBeParserExecuted) |
- m_cachedScript->removeClient(this); |
- m_cachedScript = 0; |
- } |
-} |
- |
-void ScriptElement::execute(CachedScript* cachedScript) |
-{ |
- ASSERT(!m_willBeParserExecuted); |
- ASSERT(cachedScript); |
- if (cachedScript->errorOccurred()) |
- dispatchErrorEvent(); |
- else if (!cachedScript->wasCanceled()) { |
- executeScript(ScriptSourceCode(cachedScript)); |
- dispatchLoadEvent(); |
- } |
- cachedScript->removeClient(this); |
-} |
- |
-void ScriptElement::notifyFinished(CachedResource* resource) |
-{ |
- ASSERT(!m_willBeParserExecuted); |
- |
- // CachedResource possibly invokes this notifyFinished() more than |
- // once because ScriptElement doesn't unsubscribe itself from |
- // CachedResource here and does it in execute() instead. |
- // We use m_cachedScript to check if this function is already called. |
- ASSERT_UNUSED(resource, resource == m_cachedScript); |
- if (!m_cachedScript) |
- return; |
- if (!m_element->document()->cachedResourceLoader()->canAccess(m_cachedScript.get())) { |
- dispatchErrorEvent(); |
- return; |
- } |
- |
- if (m_willExecuteInOrder) |
- m_element->document()->scriptRunner()->notifyScriptReady(this, ScriptRunner::IN_ORDER_EXECUTION); |
- else |
- m_element->document()->scriptRunner()->notifyScriptReady(this, ScriptRunner::ASYNC_EXECUTION); |
- |
- m_cachedScript = 0; |
-} |
- |
-bool ScriptElement::ignoresLoadRequest() const |
-{ |
- return m_alreadyStarted || m_isExternalScript || m_parserInserted || !element() || !element()->inDocument(); |
-} |
- |
-bool ScriptElement::isScriptForEventSupported() const |
-{ |
- String eventAttribute = client()->eventAttributeValue(); |
- String forAttribute = client()->forAttributeValue(); |
- if (!eventAttribute.isEmpty() && !forAttribute.isEmpty()) { |
- forAttribute = forAttribute.stripWhiteSpace(); |
- if (!equalIgnoringCase(forAttribute, "window")) |
- return false; |
- |
- eventAttribute = eventAttribute.stripWhiteSpace(); |
- if (!equalIgnoringCase(eventAttribute, "onload") && !equalIgnoringCase(eventAttribute, "onload()")) |
- return false; |
- } |
- return true; |
-} |
- |
-String ScriptElement::scriptContent() const |
-{ |
- return m_element->textFromChildren(); |
-} |
- |
-ScriptElementClient* ScriptElement::client() const |
-{ |
- if (isHTMLScriptElement(m_element)) |
- return toHTMLScriptElement(m_element); |
- |
- if (isSVGScriptElement(m_element)) |
- return toSVGScriptElement(m_element); |
- |
- ASSERT_NOT_REACHED(); |
- return 0; |
-} |
- |
-ScriptElement* toScriptElementIfPossible(Element* element) |
-{ |
- if (isHTMLScriptElement(element)) |
- return toHTMLScriptElement(element)->scriptElement(); |
- |
- if (isSVGScriptElement(element)) |
- return toSVGScriptElement(element)->scriptElement(); |
- |
- return 0; |
-} |
- |
-} |