146 lines
5.3 KiB
C++
146 lines
5.3 KiB
C++
/*
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* Copyright (C) 2016-2017 Apple, Inc. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "LoadableClassicScript.h"
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#include "DefaultResourceLoadPriority.h"
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#include "FetchIdioms.h"
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#include "ScriptElement.h"
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#include "ScriptSourceCode.h"
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#include "SubresourceIntegrity.h"
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#include <wtf/NeverDestroyed.h>
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#include <wtf/text/StringImpl.h>
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namespace WebCore {
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Ref<LoadableClassicScript> LoadableClassicScript::create(const String& nonce, const String& integrityMetadata, ReferrerPolicy policy, const String& crossOriginMode, const String& charset, const AtomString& initiatorName, bool isInUserAgentShadowTree, bool isAsync)
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{
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return adoptRef(*new LoadableClassicScript(nonce, integrityMetadata, policy, crossOriginMode, charset, initiatorName, isInUserAgentShadowTree, isAsync));
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}
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LoadableClassicScript::~LoadableClassicScript()
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{
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if (m_cachedScript)
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m_cachedScript->removeClient(*this);
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}
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bool LoadableClassicScript::isLoaded() const
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{
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ASSERT(m_cachedScript);
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return m_cachedScript->isLoaded();
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}
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std::optional<LoadableScript::Error> LoadableClassicScript::error() const
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{
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ASSERT(m_cachedScript);
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if (m_error)
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return m_error;
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if (m_cachedScript->errorOccurred())
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return Error { ErrorType::CachedScript, std::nullopt };
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return std::nullopt;
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}
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bool LoadableClassicScript::wasCanceled() const
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{
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ASSERT(m_cachedScript);
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return m_cachedScript->wasCanceled();
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}
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void LoadableClassicScript::notifyFinished(CachedResource& resource, const NetworkLoadMetrics&)
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{
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ASSERT(m_cachedScript);
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if (resource.resourceError().isAccessControl()) {
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static NeverDestroyed<String> consoleMessage(MAKE_STATIC_STRING_IMPL("Cross-origin script load denied by Cross-Origin Resource Sharing policy."));
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m_error = Error {
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ErrorType::CrossOriginLoad,
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ConsoleMessage {
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MessageSource::JS,
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MessageLevel::Error,
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consoleMessage
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}
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};
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}
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if (!m_error && !isScriptAllowedByNosniff(m_cachedScript->response())) {
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m_error = Error {
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ErrorType::Nosniff,
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ConsoleMessage {
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MessageSource::Security,
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MessageLevel::Error,
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makeString("Refused to execute ", m_cachedScript->url().stringCenterEllipsizedToLength(), " as script because \"X-Content-Type-Options: nosniff\" was given and its Content-Type is not a script MIME type.")
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}
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};
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}
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if (!m_error && shouldBlockResponseDueToMIMEType(m_cachedScript->response(), m_cachedScript->options().destination)) {
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m_error = Error {
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ErrorType::MIMEType,
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ConsoleMessage {
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MessageSource::Security,
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MessageLevel::Error,
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makeString("Refused to execute ", m_cachedScript->url().stringCenterEllipsizedToLength(), " as script because ", m_cachedScript->response().mimeType(), " is not a script MIME type.")
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}
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};
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}
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if (!m_error && !resource.errorOccurred() && !matchIntegrityMetadata(resource, m_integrity)) {
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m_error = Error {
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ErrorType::FailedIntegrityCheck,
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ConsoleMessage { MessageSource::Security, MessageLevel::Error, makeString("Cannot load script ", integrityMismatchDescription(resource, m_integrity)) }
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};
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}
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notifyClientFinished();
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}
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void LoadableClassicScript::execute(ScriptElement& scriptElement)
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{
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ASSERT(!error());
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scriptElement.executeClassicScript(ScriptSourceCode(m_cachedScript.get(), JSC::SourceProviderSourceType::Program, *this));
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}
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bool LoadableClassicScript::load(Document& document, const URL& sourceURL)
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{
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ASSERT(!m_cachedScript);
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auto priority = [&]() -> std::optional<ResourceLoadPriority> {
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if (m_isAsync)
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return DefaultResourceLoadPriority::asyncScript;
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// Use default.
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return { };
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};
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m_cachedScript = requestScriptWithCache(document, sourceURL, crossOriginMode(), String { m_integrity }, priority());
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if (!m_cachedScript)
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return false;
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m_cachedScript->addClient(*this);
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return true;
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}
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}
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