webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 120 insertions, 0 deletions

diff --git a/Source/WebCore/dom/LoadableClassicScript.cpp b/Source/WebCore/dom/LoadableClassicScript.cpp
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+++ b/Source/WebCore/dom/LoadableClassicScript.cpp
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+/*
+ * Copyright (C) 2016 Apple, Inc. All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "LoadableClassicScript.h"
+
+#include "ScriptElement.h"
+#include "ScriptSourceCode.h"
+#include <wtf/NeverDestroyed.h>
+#include <wtf/text/StringImpl.h>
+
+namespace WebCore {
+
+Ref<LoadableClassicScript> LoadableClassicScript::create(const String& nonce, const String& crossOriginMode, const String& charset, const AtomicString& initiatorName, bool isInUserAgentShadowTree)
+{
+    return adoptRef(*new LoadableClassicScript(nonce, crossOriginMode, charset, initiatorName, isInUserAgentShadowTree));
+}
+
+LoadableClassicScript::~LoadableClassicScript()
+{
+    if (m_cachedScript)
+        m_cachedScript->removeClient(*this);
+}
+
+bool LoadableClassicScript::isLoaded() const
+{
+    ASSERT(m_cachedScript);
+    return m_cachedScript->isLoaded();
+}
+
+std::optional<LoadableScript::Error> LoadableClassicScript::error() const
+{
+    ASSERT(m_cachedScript);
+    if (m_error)
+        return m_error;
+
+    if (m_cachedScript->errorOccurred())
+        return Error { ErrorType::CachedScript, std::nullopt };
+
+    return std::nullopt;
+}
+
+bool LoadableClassicScript::wasCanceled() const
+{
+    ASSERT(m_cachedScript);
+    return m_cachedScript->wasCanceled();
+}
+
+void LoadableClassicScript::notifyFinished(CachedResource& resource)
+{
+    ASSERT(m_cachedScript);
+    if (resource.resourceError().isAccessControl()) {
+        static NeverDestroyed<String> consoleMessage(ASCIILiteral("Cross-origin script load denied by Cross-Origin Resource Sharing policy."));
+        m_error = Error {
+            ErrorType::CrossOriginLoad,
+            ConsoleMessage {
+                MessageSource::JS,
+                MessageLevel::Error,
+                consoleMessage
+            }
+        };
+    }
+
+#if ENABLE(NOSNIFF)
+    if (!m_error && !m_cachedScript->mimeTypeAllowedByNosniff()) {
+        m_error = Error {
+            ErrorType::Nosniff,
+            ConsoleMessage {
+                MessageSource::Security,
+                MessageLevel::Error,
+                makeString(
+                    "Refused to execute script from '", m_cachedScript->url().stringCenterEllipsizedToLength(),
+                    "' because its MIME type ('", m_cachedScript->mimeType(), "') is not executable, and strict MIME type checking is enabled.")
+            }
+        };
+    }
+#endif
+
+    notifyClientFinished();
+}
+
+void LoadableClassicScript::execute(ScriptElement& scriptElement)
+{
+    ASSERT(!error());
+    scriptElement.executeClassicScript(ScriptSourceCode(m_cachedScript.get(), JSC::SourceProviderSourceType::Program, *this));
+}
+
+bool LoadableClassicScript::load(Document& document, const URL& sourceURL)
+{
+    ASSERT(!m_cachedScript);
+    m_cachedScript = requestScriptWithCache(document, sourceURL, crossOriginMode());
+    if (!m_cachedScript)
+        return false;
+    m_cachedScript->addClient(*this);
+    return true;
+}
+
+}