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      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 "core/fetch/ResourceLoaderOptions.h"
     31 #include "platform/weborigin/KURLHash.h"
     32 #include "wtf/HashMap.h"
     33 #include "wtf/HashSet.h"
     34 #include "wtf/PassOwnPtr.h"
     35 #include "wtf/text/StringHash.h"
     36 
     37 namespace blink {
     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     private:
     77         CrossOriginPreflightResultCache() { }
     78 
     79         typedef HashMap<std::pair<String, KURL>, OwnPtr<CrossOriginPreflightResultCacheItem> > CrossOriginPreflightResultHashMap;
     80 
     81         CrossOriginPreflightResultHashMap m_preflightHashMap;
     82     };
     83 
     84 } // namespace blink
     85 
     86 #endif
     87