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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 blink {
     39 
     40 typedef enum {
     41     ContentDispositionNone,
     42     ContentDispositionInline,
     43     ContentDispositionAttachment,
     44     ContentDispositionOther
     45 } ContentDispositionType;
     46 
     47 enum ContentTypeOptionsDisposition {
     48     ContentTypeOptionsNone,
     49     ContentTypeOptionsNosniff
     50 };
     51 
     52 enum XFrameOptionsDisposition {
     53     XFrameOptionsNone,
     54     XFrameOptionsDeny,
     55     XFrameOptionsSameOrigin,
     56     XFrameOptionsAllowAll,
     57     XFrameOptionsInvalid,
     58     XFrameOptionsConflict
     59 };
     60 
     61 // Be sure to update the behavior of XSSAuditor::combineXSSProtectionHeaderAndCSP whenever you change this enum's content or ordering.
     62 enum ReflectedXSSDisposition {
     63     ReflectedXSSUnset = 0,
     64     AllowReflectedXSS,
     65     ReflectedXSSInvalid,
     66     FilterReflectedXSS,
     67     BlockReflectedXSS
     68 };
     69 
     70 struct CacheControlHeader {
     71     bool parsed : 1;
     72     bool containsNoCache : 1;
     73     bool containsNoStore : 1;
     74     bool containsMustRevalidate : 1;
     75     double maxAge;
     76 
     77     CacheControlHeader()
     78         : parsed(false)
     79         , containsNoCache(false)
     80         , containsNoStore(false)
     81         , containsMustRevalidate(false)
     82         , maxAge(0.0)
     83     {
     84     }
     85 };
     86 
     87 PLATFORM_EXPORT ContentDispositionType contentDispositionType(const String&);
     88 PLATFORM_EXPORT bool isValidHTTPHeaderValue(const String&);
     89 PLATFORM_EXPORT bool isValidHTTPToken(const String&);
     90 PLATFORM_EXPORT bool parseHTTPRefresh(const String& refresh, bool fromHttpEquivMeta, double& delay, String& url);
     91 PLATFORM_EXPORT double parseDate(const String&);
     92 PLATFORM_EXPORT String filenameFromHTTPContentDisposition(const String&);
     93 PLATFORM_EXPORT AtomicString extractMIMETypeFromMediaType(const AtomicString&);
     94 PLATFORM_EXPORT String extractCharsetFromMediaType(const String&);
     95 PLATFORM_EXPORT void findCharsetInMediaType(const String& mediaType, unsigned& charsetPos, unsigned& charsetLen, unsigned start = 0);
     96 PLATFORM_EXPORT ReflectedXSSDisposition parseXSSProtectionHeader(const String& header, String& failureReason, unsigned& failurePosition, String& reportURL);
     97 PLATFORM_EXPORT String extractReasonPhraseFromHTTPStatusLine(const String&);
     98 PLATFORM_EXPORT XFrameOptionsDisposition parseXFrameOptionsHeader(const String&);
     99 PLATFORM_EXPORT CacheControlHeader parseCacheControlDirectives(const AtomicString& cacheControlHeader, const AtomicString& pragmaHeader);
    100 
    101 // -1 could be set to one of the return parameters to indicate the value is not specified.
    102 PLATFORM_EXPORT bool parseRange(const String&, long long& rangeOffset, long long& rangeEnd, long long& rangeSuffixLength);
    103 
    104 PLATFORM_EXPORT ContentTypeOptionsDisposition parseContentTypeOptionsHeader(const String& header);
    105 
    106 // Parsing Complete HTTP Messages.
    107 enum HTTPVersion { Unknown, HTTP_1_0, HTTP_1_1 };
    108 PLATFORM_EXPORT size_t parseHTTPRequestLine(const char* data, size_t length, String& failureReason, String& method, String& url, HTTPVersion&);
    109 PLATFORM_EXPORT size_t parseHTTPHeader(const char* data, size_t length, String& failureReason, AtomicString& nameStr, AtomicString& valueStr);
    110 PLATFORM_EXPORT size_t parseHTTPRequestBody(const char* data, size_t length, Vector<unsigned char>& body);
    111 
    112 }
    113 
    114 #endif
    115