CORS-RFC1918: Force preflights for external requests in DocumentThreadableLoader.

third_party/WebKit/Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 4958 matching lines @@
     } else {
         m_cookieURL = m_url;
         setSecurityOrigin(SecurityOrigin::create(m_url));
     }
 
     // Set the address space before setting up CSP, as the latter may override
     // the former via the 'treat-as-public-address' directive (see
     // https://mikewest.github.io/cors-rfc1918/#csp).
     if (initializer.isHostedInReservedIPRange()) {
         setAddressSpace(getSecurityOrigin()->isLocalhost() ? WebAddressSpaceLocal : WebAddressSpacePrivate);
+    } else if (getSecurityOrigin()->isLocal()) {
+        // "Local" security origins (like 'file://...') are treated as having
+        // a local address space.
+        //
+        // TODO(mkwst): It's not entirely clear that this is a good idea.
+        setAddressSpace(WebAddressSpaceLocal);
     } else {
         setAddressSpace(WebAddressSpacePublic);
     }
 
     if (importsController()) {
         // If this document is an HTML import, grab a reference to it's master document's Content
         // Security Policy. We don't call 'initContentSecurityPolicy' in this case, as we can't
         // rebind the master document's policy object: its ExecutionContext needs to remain tied
         // to the master document.
         setContentSecurityPolicy(importsController()->master()->contentSecurityPolicy());
@@ skipping 990 matching lines @@
 #ifndef NDEBUG
 using namespace blink;
 void showLiveDocumentInstances()
 {
     Document::WeakDocumentSet& set = Document::liveDocumentSet();
     fprintf(stderr, "There are %u documents currently alive:\n", set.size());
     for (Document* document : set)
         fprintf(stderr, "- Document %p URL: %s\n", document, document->url().getString().utf8().data());
 }
 #endif