Added validation of the policy specified in the 'csp' attribute

third_party/WebKit/Source/core/loader/FrameLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
  * Copyright (C) 2011 Kris Jordan <krisjordan@gmail.com>
  * Copyright (C) 2011 Google Inc. All rights reserved.
@@ skipping 1553 matching lines @@
   DCHECK(ToLocalFrame(parent_frame)->GetDocument());
   return ToLocalFrame(parent_frame)
       ->GetDocument()
       ->InsecureNavigationsToUpgrade();
 }
 
 void FrameLoader::ModifyRequestForCSP(ResourceRequest& resource_request,
                                       Document* document) const {
   if (RuntimeEnabledFeatures::embedderCSPEnforcementEnabled() &&
       !RequiredCSP().IsEmpty()) {
-    // TODO(amalika): Strengthen this DCHECK that requiredCSP has proper format
-    DCHECK(RequiredCSP().GetString().ContainsOnlyASCII());
+    DCHECK(ContentSecurityPolicy::IsValidCSPAttr(RequiredCSP().GetString()));
     resource_request.SetHTTPHeaderField(HTTPNames::Required_CSP, RequiredCSP());
   }
 
   // Tack an 'Upgrade-Insecure-Requests' header to outgoing navigational
   // requests, as described in
   // https://w3c.github.io/webappsec/specs/upgrade/#feature-detect
   if (resource_request.GetFrameType() != WebURLRequest::kFrameTypeNone) {
     // Early return if the request has already been upgraded.
     if (!resource_request.HttpHeaderField(HTTPNames::Upgrade_Insecure_Requests)
              .IsNull()) {
@@ skipping 92 matching lines @@
   // TODO(japhet): This is needed because the browser process DCHECKs if the
   // first entry we commit in a new frame has replacement set. It's unclear
   // whether the DCHECK is right, investigate removing this special case.
   bool replace_current_item = load_type == kFrameLoadTypeReplaceCurrentItem &&
                               (!Opener() || !request.Url().IsEmpty());
   loader->SetReplacesCurrentHistoryItem(replace_current_item);
   return loader;
 }
 
 }  // namespace blink