1/*
2 * Copyright (C) 2008 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
27#ifndef CrossOriginPreflightResultCache_h
28#define CrossOriginPreflightResultCache_h
29
30#include "URLHash.h"
31#include "ResourceHandleTypes.h"
32#include <chrono>
33#include <wtf/HashMap.h>
34#include <wtf/HashSet.h>
35#include <wtf/text/StringHash.h>
36
37namespace WebCore {
38
39class HTTPHeaderMap;
40class ResourceResponse;
41
42class CrossOriginPreflightResultCacheItem {
43    WTF_MAKE_NONCOPYABLE(CrossOriginPreflightResultCacheItem); WTF_MAKE_FAST_ALLOCATED;
44public:
45    explicit CrossOriginPreflightResultCacheItem(StoredCredentials credentials)
46        : m_credentials(credentials)
47    {
48    }
49
50    bool parse(const ResourceResponse&, String& errorDescription);
51    bool allowsCrossOriginMethod(const String&, String& errorDescription) const;
52    bool allowsCrossOriginHeaders(const HTTPHeaderMap&, String& errorDescription) const;
53    bool allowsRequest(StoredCredentials, const String& method, const HTTPHeaderMap& requestHeaders) const;
54
55private:
56    // FIXME: A better solution to holding onto the absolute expiration time might be
57    // to start a timer for the expiration delta that removes this from the cache when
58    // it fires.
59    std::chrono::steady_clock::time_point m_absoluteExpiryTime;
60    StoredCredentials m_credentials;
61    HashSet<String> m_methods;
62    HashSet<String, CaseFoldingHash> m_headers;
63};
64
65class CrossOriginPreflightResultCache {
66    WTF_MAKE_NONCOPYABLE(CrossOriginPreflightResultCache); WTF_MAKE_FAST_ALLOCATED;
67
68public:
69    static CrossOriginPreflightResultCache& shared();
70
71    void appendEntry(const String& origin, const URL&, std::unique_ptr<CrossOriginPreflightResultCacheItem>);
72    bool canSkipPreflight(const String& origin, const URL&, StoredCredentials, const String& method, const HTTPHeaderMap& requestHeaders);
73
74    void empty();
75
76private:
77    friend NeverDestroyed<CrossOriginPreflightResultCache>;
78    CrossOriginPreflightResultCache();
79
80    HashMap<std::pair<String, URL>, std::unique_ptr<CrossOriginPreflightResultCacheItem>> m_preflightHashMap;
81};
82
83} // namespace WebCore
84
85#endif
86