1/*
2 * Copyright (C) 2009 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 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 ProtectionSpaceHash_h
27#define ProtectionSpaceHash_h
28
29#include "ProtectionSpace.h"
30#include <wtf/HashTraits.h>
31
32namespace WebCore {
33
34struct ProtectionSpaceHash {
35    static unsigned hash(const ProtectionSpace& protectionSpace)
36    {
37        unsigned hashCodes[5] = {
38            protectionSpace.host().impl() ? protectionSpace.host().impl()->hash() : 0,
39            protectionSpace.port(),
40            protectionSpace.serverType(),
41            protectionSpace.authenticationScheme(),
42            protectionSpace.realm().impl() ? protectionSpace.realm().impl()->hash() : 0
43        };
44
45        unsigned codeCount = sizeof(hashCodes) / sizeof(UChar);
46        // Ignore realm for proxies.
47        if (protectionSpace.isProxy())
48            codeCount -= sizeof(hashCodes[0]) / sizeof(UChar);
49        return StringImpl::computeHash(reinterpret_cast<UChar*>(hashCodes), codeCount);
50    }
51
52    static bool equal(const ProtectionSpace& a, const ProtectionSpace& b) { return a == b; }
53    static const bool safeToCompareToEmptyOrDeleted = false;
54};
55
56} // namespace WebCore
57
58namespace WTF {
59
60    // WebCore::ProtectionSpaceHash is the default hash for ProtectionSpace
61    template<> struct HashTraits<WebCore::ProtectionSpace> : GenericHashTraits<WebCore::ProtectionSpace> {
62        static const bool emptyValueIsZero = true;
63        static void constructDeletedValue(WebCore::ProtectionSpace& slot) { new (&slot) WebCore::ProtectionSpace(HashTableDeletedValue); }
64        static bool isDeletedValue(const WebCore::ProtectionSpace& slot) { return slot.isHashTableDeletedValue(); }
65    };
66
67    template<typename T> struct DefaultHash;
68    template<> struct DefaultHash<WebCore::ProtectionSpace> {
69        typedef WebCore::ProtectionSpaceHash Hash;
70    };
71
72} // namespace WTF
73
74
75#endif // ProtectionSpaceHash_h
76