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 COMPUTER, 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
27#ifndef CrossOriginPreflightResultCache_h
28#define CrossOriginPreflightResultCache_h
29
30#include "KURLHash.h"
31#include "ResourceHandleTypes.h"
32#include <wtf/HashMap.h>
33#include <wtf/HashSet.h>
34#include <wtf/PassOwnPtr.h>
35#include <wtf/text/StringHash.h>
36
37namespace WebCore {
38
39    class HTTPHeaderMap;
40    class ResourceResponse;
41
42    class CrossOriginPreflightResultCacheItem {
43        WTF_MAKE_NONCOPYABLE(CrossOriginPreflightResultCacheItem); WTF_MAKE_FAST_ALLOCATED;
44    public:
45        CrossOriginPreflightResultCacheItem(StoredCredentials credentials)
46            : m_absoluteExpiryTime(0)
47            , m_credentials(credentials)
48        {
49        }
50
51        bool parse(const ResourceResponse&, String& errorDescription);
52        bool allowsCrossOriginMethod(const String&, String& errorDescription) const;
53        bool allowsCrossOriginHeaders(const HTTPHeaderMap&, String& errorDescription) const;
54        bool allowsRequest(StoredCredentials, const String& method, const HTTPHeaderMap& requestHeaders) const;
55
56    private:
57        typedef HashSet<String, CaseFoldingHash> HeadersSet;
58
59        // FIXME: A better solution to holding onto the absolute expiration time might be
60        // to start a timer for the expiration delta that removes this from the cache when
61        // it fires.
62        double m_absoluteExpiryTime;
63        StoredCredentials m_credentials;
64        HashSet<String> m_methods;
65        HeadersSet m_headers;
66    };
67
68    class CrossOriginPreflightResultCache {
69        WTF_MAKE_NONCOPYABLE(CrossOriginPreflightResultCache); WTF_MAKE_FAST_ALLOCATED;
70    public:
71        static CrossOriginPreflightResultCache& shared();
72
73        void appendEntry(const String& origin, const KURL&, PassOwnPtr<CrossOriginPreflightResultCacheItem>);
74        bool canSkipPreflight(const String& origin, const KURL&, StoredCredentials, const String& method, const HTTPHeaderMap& requestHeaders);
75
76        void empty();
77
78    private:
79        CrossOriginPreflightResultCache() { }
80
81        typedef HashMap<std::pair<String, KURL>, OwnPtr<CrossOriginPreflightResultCacheItem> > CrossOriginPreflightResultHashMap;
82
83        CrossOriginPreflightResultHashMap m_preflightHashMap;
84    };
85
86} // namespace WebCore
87
88#endif
89