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
33namespace WebCore {
34
35typedef HashSet<String, CaseFoldingHash> URLSchemesMap;
36
37class SchemeRegistry {
38public:
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