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 #ifndef SchemeRegistry_h
27 #define SchemeRegistry_h
28 
29 #include "PlatformString.h"
30 #include <wtf/HashSet.h>
31 #include <wtf/text/StringHash.h>
32 
33 namespace WebCore {
34 
35 typedef HashSet<String, CaseFoldingHash> URLSchemesMap;
36 
37 class SchemeRegistry {
38 public:
39     static void registerURLSchemeAsLocal(const String&);
40     static void removeURLSchemeRegisteredAsLocal(const String&);
41     static const URLSchemesMap& localSchemes();
42 
43     static bool shouldTreatURLSchemeAsLocal(const String&);
44 
45     // Secure schemes do not trigger mixed content warnings. For example,
46     // https and data are secure schemes because they cannot be corrupted by
47     // active network attackers.
48     static void registerURLSchemeAsSecure(const String&);
49     static bool shouldTreatURLSchemeAsSecure(const String&);
50 
51     static void registerURLSchemeAsNoAccess(const String&);
52     static bool shouldTreatURLSchemeAsNoAccess(const String&);
53 
54     // Display-isolated schemes can only be displayed (in the sense of
55     // SecurityOrigin::canDisplay) by documents from the same scheme.
56     static void registerURLSchemeAsDisplayIsolated(const String&);
57     static bool shouldTreatURLSchemeAsDisplayIsolated(const String&);
58 
59     static void registerURLSchemeAsEmptyDocument(const String&);
60     static bool shouldLoadURLSchemeAsEmptyDocument(const String&);
61 
62     // Such schemes should delegate to SecurityOrigin::canRequest for any URL
63     // passed to SecurityOrigin::canDisplay.
64     static bool canDisplayOnlyIfCanRequest(const String& scheme);
65     static void registerAsCanDisplayOnlyIfCanRequest(const String& scheme);
66 };
67 
68 } // namespace WebCore
69 
70 #endif // SchemeRegistry_h
71