1/*
2 * Copyright (C) 2013 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. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "CryptoAlgorithmRegistry.h"
28
29#if ENABLE(WEB_CRYPTO)
30
31#include "CryptoAlgorithm.h"
32#include <wtf/Lock.h>
33#include <wtf/NeverDestroyed.h>
34
35namespace WebCore {
36
37static Lock registryMutex;
38
39CryptoAlgorithmRegistry& CryptoAlgorithmRegistry::singleton()
40{
41 static NeverDestroyed<CryptoAlgorithmRegistry> registry;
42 return registry;
43}
44
45CryptoAlgorithmRegistry::CryptoAlgorithmRegistry()
46{
47 platformRegisterAlgorithms();
48}
49
50Optional<CryptoAlgorithmIdentifier> CryptoAlgorithmRegistry::identifier(const String& name)
51{
52 if (name.isEmpty())
53 return WTF::nullopt;
54
55 std::lock_guard<Lock> lock(registryMutex);
56
57 // FIXME: How is it helpful to call isolatedCopy on the argument to find?
58 auto identifier = m_identifiers.find(name.isolatedCopy());
59 if (identifier == m_identifiers.end())
60 return WTF::nullopt;
61
62 return identifier->value;
63}
64
65String CryptoAlgorithmRegistry::name(CryptoAlgorithmIdentifier identifier)
66{
67 std::lock_guard<Lock> lock(registryMutex);
68
69 auto contructor = m_constructors.find(static_cast<unsigned>(identifier));
70 if (contructor == m_constructors.end())
71 return { };
72
73 return contructor->value.first.isolatedCopy();
74}
75
76RefPtr<CryptoAlgorithm> CryptoAlgorithmRegistry::create(CryptoAlgorithmIdentifier identifier)
77{
78 std::lock_guard<Lock> lock(registryMutex);
79
80 auto contructor = m_constructors.find(static_cast<unsigned>(identifier));
81 if (contructor == m_constructors.end())
82 return nullptr;
83
84 return contructor->value.second();
85}
86
87void CryptoAlgorithmRegistry::registerAlgorithm(const String& name, CryptoAlgorithmIdentifier identifier, CryptoAlgorithmConstructor constructor)
88{
89 std::lock_guard<Lock> lock(registryMutex);
90
91 ASSERT(!m_identifiers.contains(name));
92 ASSERT(!m_constructors.contains(static_cast<unsigned>(identifier)));
93
94 m_identifiers.add(name, identifier);
95 m_constructors.add(static_cast<unsigned>(identifier), std::make_pair(name, constructor));
96}
97
98
99} // namespace WebCore
100
101#endif // ENABLE(WEB_CRYPTO)
102