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      1 /*
      2  * Copyright (C) 2010 Apple Inc. All Rights Reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  *
     25  */
     26 
     27 #ifndef SchemeRegistry_h
     28 #define SchemeRegistry_h
     29 
     30 #include "weborigin/WebOriginExport.h"
     31 #include "wtf/HashSet.h"
     32 #include "wtf/text/StringHash.h"
     33 #include "wtf/text/WTFString.h"
     34 
     35 namespace WebCore {
     36 
     37 typedef HashSet<String, CaseFoldingHash> URLSchemesMap;
     38 
     39 class WEBORIGIN_EXPORT SchemeRegistry {
     40 public:
     41     static void registerURLSchemeAsLocal(const String&);
     42     static void removeURLSchemeRegisteredAsLocal(const String&);
     43     static const URLSchemesMap& localSchemes();
     44 
     45     static bool shouldTreatURLSchemeAsLocal(const String&);
     46 
     47     // Secure schemes do not trigger mixed content warnings. For example,
     48     // https and data are secure schemes because they cannot be corrupted by
     49     // active network attackers.
     50     static void registerURLSchemeAsSecure(const String&);
     51     static bool shouldTreatURLSchemeAsSecure(const String&);
     52 
     53     static void registerURLSchemeAsNoAccess(const String&);
     54     static bool shouldTreatURLSchemeAsNoAccess(const String&);
     55 
     56     // Display-isolated schemes can only be displayed (in the sense of
     57     // SecurityOrigin::canDisplay) by documents from the same scheme.
     58     static void registerURLSchemeAsDisplayIsolated(const String&);
     59     static bool shouldTreatURLSchemeAsDisplayIsolated(const String&);
     60 
     61     static void registerURLSchemeAsEmptyDocument(const String&);
     62     static bool shouldLoadURLSchemeAsEmptyDocument(const String&);
     63 
     64     static void setDomainRelaxationForbiddenForURLScheme(bool forbidden, const String&);
     65     static bool isDomainRelaxationForbiddenForURLScheme(const String&);
     66 
     67     // Such schemes should delegate to SecurityOrigin::canRequest for any URL
     68     // passed to SecurityOrigin::canDisplay.
     69     static bool canDisplayOnlyIfCanRequest(const String& scheme);
     70     static void registerAsCanDisplayOnlyIfCanRequest(const String& scheme);
     71 
     72     // Schemes against which javascript: URLs should not be allowed to run (stop
     73     // bookmarklets from running on sensitive pages).
     74     static void registerURLSchemeAsNotAllowingJavascriptURLs(const String& scheme);
     75     static bool shouldTreatURLSchemeAsNotAllowingJavascriptURLs(const String& scheme);
     76 
     77     // Allow non-HTTP schemes to be registered to allow CORS requests.
     78     static void registerURLSchemeAsCORSEnabled(const String& scheme);
     79     static bool shouldTreatURLSchemeAsCORSEnabled(const String& scheme);
     80 
     81     // Allow resources from some schemes to load on a page, regardless of its
     82     // Content Security Policy.
     83     static void registerURLSchemeAsBypassingContentSecurityPolicy(const String& scheme);
     84     static void removeURLSchemeRegisteredAsBypassingContentSecurityPolicy(const String& scheme);
     85     static bool schemeShouldBypassContentSecurityPolicy(const String& scheme);
     86 };
     87 
     88 } // namespace WebCore
     89 
     90 #endif // SchemeRegistry_h
     91