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      1 /*
      2  * Copyright (C) 2006 Alexey Proskuryakov (ap (at) webkit.org)
      3  * Copyright (C) 2009 Google Inc. All rights reserved.
      4  * Copyright (C) 2011 Apple Inc. All Rights Reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  *
     10  * 1.  Redistributions of source code must retain the above copyright
     11  *     notice, this list of conditions and the following disclaimer.
     12  * 2.  Redistributions in binary form must reproduce the above copyright
     13  *     notice, this list of conditions and the following disclaimer in the
     14  *     documentation and/or other materials provided with the distribution.
     15  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     16  *     its contributors may be used to endorse or promote products derived
     17  *     from this software without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     20  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     21  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     22  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     23  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     26  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef HTTPParsers_h
     32 #define HTTPParsers_h
     33 
     34 #include "platform/PlatformExport.h"
     35 #include "wtf/Forward.h"
     36 #include "wtf/Vector.h"
     37 
     38 namespace WebCore {
     39 
     40 class HTTPHeaderMap;
     41 class ResourceResponseBase;
     42 
     43 typedef enum {
     44     ContentDispositionNone,
     45     ContentDispositionInline,
     46     ContentDispositionAttachment,
     47     ContentDispositionOther
     48 } ContentDispositionType;
     49 
     50 enum ContentTypeOptionsDisposition {
     51     ContentTypeOptionsNone,
     52     ContentTypeOptionsNosniff
     53 };
     54 
     55 enum XFrameOptionsDisposition {
     56     XFrameOptionsNone,
     57     XFrameOptionsDeny,
     58     XFrameOptionsSameOrigin,
     59     XFrameOptionsAllowAll,
     60     XFrameOptionsInvalid,
     61     XFrameOptionsConflict
     62 };
     63 
     64 // Be sure to update the behavior of XSSAuditor::combineXSSProtectionHeaderAndCSP whenever you change this enum's content or ordering.
     65 enum ReflectedXSSDisposition {
     66     ReflectedXSSUnset = 0,
     67     AllowReflectedXSS,
     68     ReflectedXSSInvalid,
     69     FilterReflectedXSS,
     70     BlockReflectedXSS
     71 };
     72 
     73 struct CacheControlHeader {
     74     bool parsed : 1;
     75     bool containsNoCache : 1;
     76     bool containsNoStore : 1;
     77     bool containsMustRevalidate : 1;
     78     double maxAge;
     79 
     80     CacheControlHeader()
     81         : parsed(false)
     82         , containsNoCache(false)
     83         , containsNoStore(false)
     84         , containsMustRevalidate(false)
     85         , maxAge(0.0)
     86     {
     87     }
     88 };
     89 
     90 PLATFORM_EXPORT ContentDispositionType contentDispositionType(const String&);
     91 PLATFORM_EXPORT bool isValidHTTPHeaderValue(const String&);
     92 PLATFORM_EXPORT bool isValidHTTPToken(const String&);
     93 PLATFORM_EXPORT bool parseHTTPRefresh(const String& refresh, bool fromHttpEquivMeta, double& delay, String& url);
     94 PLATFORM_EXPORT double parseDate(const String&);
     95 PLATFORM_EXPORT String filenameFromHTTPContentDisposition(const String&);
     96 PLATFORM_EXPORT AtomicString extractMIMETypeFromMediaType(const AtomicString&);
     97 PLATFORM_EXPORT String extractCharsetFromMediaType(const String&);
     98 PLATFORM_EXPORT void findCharsetInMediaType(const String& mediaType, unsigned& charsetPos, unsigned& charsetLen, unsigned start = 0);
     99 PLATFORM_EXPORT ReflectedXSSDisposition parseXSSProtectionHeader(const String& header, String& failureReason, unsigned& failurePosition, String& reportURL);
    100 PLATFORM_EXPORT String extractReasonPhraseFromHTTPStatusLine(const String&);
    101 PLATFORM_EXPORT XFrameOptionsDisposition parseXFrameOptionsHeader(const String&);
    102 PLATFORM_EXPORT CacheControlHeader parseCacheControlDirectives(const AtomicString& cacheControlHeader, const AtomicString& pragmaHeader);
    103 
    104 // -1 could be set to one of the return parameters to indicate the value is not specified.
    105 PLATFORM_EXPORT bool parseRange(const String&, long long& rangeOffset, long long& rangeEnd, long long& rangeSuffixLength);
    106 
    107 PLATFORM_EXPORT ContentTypeOptionsDisposition parseContentTypeOptionsHeader(const String& header);
    108 
    109 // Parsing Complete HTTP Messages.
    110 enum HTTPVersion { Unknown, HTTP_1_0, HTTP_1_1 };
    111 PLATFORM_EXPORT size_t parseHTTPRequestLine(const char* data, size_t length, String& failureReason, String& method, String& url, HTTPVersion&);
    112 PLATFORM_EXPORT size_t parseHTTPHeader(const char* data, size_t length, String& failureReason, AtomicString& nameStr, AtomicString& valueStr);
    113 PLATFORM_EXPORT size_t parseHTTPRequestBody(const char* data, size_t length, Vector<unsigned char>& body);
    114 
    115 }
    116 
    117 #endif
    118