WebCore/CrossOriginPreflightResultCache.h

   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 #include "KURLHash.h"
  28 #include "StringHash.h"
  29
  30 namespace WebCore {
  31
  32     class HTTPHeaderMap;
  33     class ResourceResponse;
  34
  35     class CrossOriginPreflightResultCacheItem : Noncopyable {
  36     public:
  37         CrossOriginPreflightResultCacheItem(bool credentials)
  38             : m_absoluteExpiryTime(0)
  39             , m_credentials(credentials)
  40         {
  41         }
  42
  43         bool parse(const ResourceResponse&);
  44         bool allowsCrossOriginMethod(const String&) const;
  45         bool allowsCrossOriginHeaders(const HTTPHeaderMap&) const;
  46         bool allowsRequest(bool includeCredentials, const String& method, const HTTPHeaderMap& requestHeaders) const;
  47
  48     private:
  49         typedef HashSet<String, CaseFoldingHash> HeadersSet;
  50
  51         // FIXME: A better solution to holding onto the absolute expiration time might be
  52         // to start a timer for the expiration delta that removes this from the cache when
  53         // it fires.
  54         double m_absoluteExpiryTime;
  55         bool m_credentials;
  56         HashSet<String> m_methods;
  57         HeadersSet m_headers;
  58     };
  59
  60     class CrossOriginPreflightResultCache : Noncopyable {
  61     public:
  62         static CrossOriginPreflightResultCache& shared();
  63
  64         void appendEntry(const String& origin, const KURL&, CrossOriginPreflightResultCacheItem*);
  65         bool canSkipPreflight(const String& origin, const KURL&, bool includeCredentials, const String& method, const HTTPHeaderMap& requestHeaders);
  66
  67     private:
  68         CrossOriginPreflightResultCache() { }
  69
  70         typedef HashMap<std::pair<String, KURL>, CrossOriginPreflightResultCacheItem*> CrossOriginPreflightResultHashMap;
  71
  72         CrossOriginPreflightResultHashMap m_preflightHashMap;
  73         Mutex m_mutex;
  74     };
  75
  76 } // namespace WebCore