Implement script MIME restrictions for X-Content-Type-Options: nosniff for Workers

third_party/WebKit/Source/platform/network/ResourceResponse.cpp

 /*
  * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google 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 COMPUTER, 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 COMPUTER, 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 "platform/network/ResourceResponse.h"
 
 #include "platform/HTTPNames.h"
+#include "platform/network/HTTPParsers.h"
 #include "wtf/CurrentTime.h"
 #include "wtf/PtrUtil.h"
 #include "wtf/StdLibExtras.h"
 
 #include <memory>
 
 namespace blink {
 
 namespace {
 
@@ skipping 491 matching lines @@
 bool ResourceResponse::isAttachment() const {
   static const char attachmentString[] = "attachment";
   String value = m_httpHeaderFields.get(HTTPNames::Content_Disposition);
   size_t loc = value.find(';');
   if (loc != kNotFound)
     value = value.left(loc);
   value = value.stripWhiteSpace();
   return equalIgnoringCase(value, attachmentString);
 }
 
+AtomicString ResourceResponse::httpContentType() const {
+  return extractMIMETypeFromMediaType(
+      httpHeaderField(HTTPNames::Content_Type).lower());
+}
+
 void ResourceResponse::setLastModifiedDate(time_t lastModifiedDate) {
   m_lastModifiedDate = lastModifiedDate;
 }
 
 time_t ResourceResponse::lastModifiedDate() const {
   return m_lastModifiedDate;
 }
 
 bool ResourceResponse::wasCached() const {
   return m_wasCached;
@@ skipping 97 matching lines @@
   if (a.resourceLoadTiming() != b.resourceLoadTiming())
     return false;
   if (a.encodedBodyLength() != b.encodedBodyLength())
     return false;
   if (a.decodedBodyLength() != b.decodedBodyLength())
     return false;
   return true;
 }
 
 }  // namespace blink