Source/WebCore/platform/URLParser.h

   1 /*
   2  * Copyright (C) 2016 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 INC. AND ITS CONTRIBUTORS ``AS IS''
  14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  23  * THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #pragma once
  27
  28 #include "TextEncoding.h"
  29 #include "URL.h"
  30 #include <wtf/Forward.h>
  31
  32 namespace WebCore {
  33
  34 template<typename CharacterType> class CodePointIterator;
  35
  36 class URLParser {
  37 public:
  38     WEBCORE_EXPORT URLParser(const String&, const URL& = { }, const TextEncoding& = UTF8Encoding());
  39     URL result() { return m_url; }
  40
  41     WEBCORE_EXPORT static bool allValuesEqual(const URL&, const URL&);
  42     WEBCORE_EXPORT static bool internalValuesConsistent(const URL&);
  43
  44     WEBCORE_EXPORT static bool enabled();
  45     WEBCORE_EXPORT static void setEnabled(bool);
  46
  47     typedef Vector<std::pair<String, String>> URLEncodedForm;
  48     static URLEncodedForm parseURLEncodedForm(StringView);
  49     static String serialize(const URLEncodedForm&);
  50
  51 private:
  52     URL m_url;
  53     Vector<LChar> m_asciiBuffer;
  54     bool m_urlIsSpecial { false };
  55     bool m_hostHasPercentOrNonASCII { false };
  56     String m_inputString;
  57     const void* m_inputBegin { nullptr };
  58
  59     bool m_didSeeSyntaxViolation { false };
  60     const static size_t defaultInlineBufferSize = 2048;
  61
  62     template<typename CharacterType> void parse(const CharacterType*, const unsigned length, const URL&, const TextEncoding&);
  63     template<typename CharacterType> void parseAuthority(CodePointIterator<CharacterType>);
  64     template<typename CharacterType> bool parseHostAndPort(CodePointIterator<CharacterType>);
  65     template<typename CharacterType> bool parsePort(CodePointIterator<CharacterType>&);
  66
  67     void failure();
  68     enum class ReportSyntaxViolation { No, Yes };
  69     template<typename CharacterType, ReportSyntaxViolation reportSyntaxViolation = ReportSyntaxViolation::Yes>
  70     void advance(CodePointIterator<CharacterType>& iterator) { advance<CharacterType, reportSyntaxViolation>(iterator, iterator); }
  71     template<typename CharacterType, ReportSyntaxViolation = ReportSyntaxViolation::Yes>
  72     void advance(CodePointIterator<CharacterType>&, const CodePointIterator<CharacterType>& iteratorForSyntaxViolationPosition);
  73     template<typename CharacterType> bool takesTwoAdvancesUntilEnd(CodePointIterator<CharacterType>);
  74     template<typename CharacterType> void syntaxViolation(const CodePointIterator<CharacterType>&);
  75     template<typename CharacterType> bool isPercentEncodedDot(CodePointIterator<CharacterType>);
  76     template<typename CharacterType> bool isWindowsDriveLetter(CodePointIterator<CharacterType>);
  77     template<typename CharacterType> bool isSingleDotPathSegment(CodePointIterator<CharacterType>);
  78     template<typename CharacterType> bool isDoubleDotPathSegment(CodePointIterator<CharacterType>);
  79     template<typename CharacterType> bool shouldCopyFileURL(CodePointIterator<CharacterType>);
  80     template<typename CharacterType> bool checkLocalhostCodePoint(CodePointIterator<CharacterType>&, UChar32);
  81     template<typename CharacterType> bool isAtLocalhost(CodePointIterator<CharacterType>);
  82     bool isLocalhost(StringView);
  83     template<typename CharacterType> void consumeSingleDotPathSegment(CodePointIterator<CharacterType>&);
  84     template<typename CharacterType> void consumeDoubleDotPathSegment(CodePointIterator<CharacterType>&);
  85     template<typename CharacterType> void appendWindowsDriveLetter(CodePointIterator<CharacterType>&);
  86     template<typename CharacterType> size_t currentPosition(const CodePointIterator<CharacterType>&);
  87     template<typename UnsignedIntegerType> void appendNumberToASCIIBuffer(UnsignedIntegerType);
  88     template<bool(*isInCodeSet)(UChar32), typename CharacterType> void utf8PercentEncode(const CodePointIterator<CharacterType>&);
  89     template<typename CharacterType> void utf8QueryEncode(const CodePointIterator<CharacterType>&);
  90     template<typename CharacterType> Optional<Vector<LChar, defaultInlineBufferSize>> domainToASCII(const String&, const CodePointIterator<CharacterType>& iteratorForSyntaxViolationPosition);
  91     template<typename CharacterType> Vector<LChar, defaultInlineBufferSize> percentDecode(const LChar*, size_t, const CodePointIterator<CharacterType>& iteratorForSyntaxViolationPosition);
  92     static Vector<LChar, defaultInlineBufferSize> percentDecode(const LChar*, size_t);
  93     static Optional<String> formURLDecode(StringView input);
  94     static bool hasInvalidDomainCharacter(const Vector<LChar, defaultInlineBufferSize>&);
  95     void percentEncodeByte(uint8_t);
  96     void appendToASCIIBuffer(UChar32);
  97     void appendToASCIIBuffer(const char*, size_t);
  98     void appendToASCIIBuffer(const LChar* characters, size_t size) { appendToASCIIBuffer(reinterpret_cast<const char*>(characters), size); }
  99     template<typename CharacterType> void encodeQuery(const Vector<UChar>& source, const TextEncoding&, CodePointIterator<CharacterType>);
 100     void copyASCIIStringUntil(const String&, size_t length);
 101     StringView parsedDataView(size_t start, size_t length);
 102
 103     using IPv4Address = uint32_t;
 104     void serializeIPv4(IPv4Address);
 105     template<typename CharacterType> Optional<IPv4Address> parseIPv4Host(CodePointIterator<CharacterType>);
 106     template<typename CharacterType> Optional<uint32_t> parseIPv4Piece(CodePointIterator<CharacterType>&, bool& syntaxViolation);
 107     using IPv6Address = std::array<uint16_t, 8>;
 108     template<typename CharacterType> Optional<IPv6Address> parseIPv6Host(CodePointIterator<CharacterType>);
 109     template<typename CharacterType> Optional<uint32_t> parseIPv4PieceInsideIPv6(CodePointIterator<CharacterType>&);
 110     template<typename CharacterType> Optional<IPv4Address> parseIPv4AddressInsideIPv6(CodePointIterator<CharacterType>);
 111     void serializeIPv6Piece(uint16_t piece);
 112     void serializeIPv6(IPv6Address);
 113
 114     enum class URLPart;
 115     template<typename CharacterType> void copyURLPartsUntil(const URL& base, URLPart, const CodePointIterator<CharacterType>&, bool& isUTF8Encoding);
 116     static size_t urlLengthUntilPart(const URL&, URLPart);
 117     void popPath();
 118 };
 119
 120 }