1 // Copyright 2007, Google Inc. 2 // 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 are 6 // met: 7 // 8 // * Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // * Redistributions in binary form must reproduce the above 11 // copyright notice, this list of conditions and the following disclaimer 12 // in the documentation and/or other materials provided with the 13 // distribution. 14 // * Neither the name of Google Inc. nor the names of its 15 // contributors may be used to endorse or promote products derived from 16 // this software without specific prior written permission. 17 // 18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 30 // Functions for canonicalizing "path" URLs. Not to be confused with the path 31 // of a URL, these are URLs that have no authority section, only a path. For 32 // example, "javascript:" and "data:". 33 34 #include "googleurl/src/url_canon.h" 35 #include "googleurl/src/url_canon_internal.h" 36 37 namespace url_canon { 38 39 namespace { 40 41 template<typename CHAR, typename UCHAR> 42 bool DoCanonicalizePathURL(const URLComponentSource<CHAR>& source, 43 const url_parse::Parsed& parsed, 44 CanonOutput* output, 45 url_parse::Parsed* new_parsed) { 46 // Scheme: this will append the colon. 47 bool success = CanonicalizeScheme(source.scheme, parsed.scheme, 48 output, &new_parsed->scheme); 49 50 // We assume there's no authority for path URLs. Note that hosts should never 51 // have -1 length. 52 new_parsed->username.reset(); 53 new_parsed->password.reset(); 54 new_parsed->host.reset(); 55 new_parsed->port.reset(); 56 57 if (parsed.path.is_valid()) { 58 // Copy the path using path URL's more lax escaping rules (think for 59 // javascript:). We convert to UTF-8 and escape non-ASCII, but leave all 60 // ASCII characters alone. This helps readability of JavaStript. 61 new_parsed->path.begin = output->length(); 62 int end = parsed.path.end(); 63 for (int i = parsed.path.begin; i < end; i++) { 64 UCHAR uch = static_cast<UCHAR>(source.path[i]); 65 if (uch < 0x20 || uch >= 0x80) 66 success &= AppendUTF8EscapedChar(source.path, &i, end, output); 67 else 68 output->push_back(static_cast<char>(uch)); 69 } 70 new_parsed->path.len = output->length() - new_parsed->path.begin; 71 } else { 72 // Empty path. 73 new_parsed->path.reset(); 74 } 75 76 // Assume there's no query or ref. 77 new_parsed->query.reset(); 78 new_parsed->ref.reset(); 79 80 return success; 81 } 82 83 } // namespace 84 85 bool CanonicalizePathURL(const char* spec, 86 int spec_len, 87 const url_parse::Parsed& parsed, 88 CanonOutput* output, 89 url_parse::Parsed* new_parsed) { 90 return DoCanonicalizePathURL<char, unsigned char>( 91 URLComponentSource<char>(spec), parsed, output, new_parsed); 92 } 93 94 bool CanonicalizePathURL(const char16* spec, 95 int spec_len, 96 const url_parse::Parsed& parsed, 97 CanonOutput* output, 98 url_parse::Parsed* new_parsed) { 99 return DoCanonicalizePathURL<char16, char16>( 100 URLComponentSource<char16>(spec), parsed, output, new_parsed); 101 } 102 103 bool ReplacePathURL(const char* base, 104 const url_parse::Parsed& base_parsed, 105 const Replacements<char>& replacements, 106 CanonOutput* output, 107 url_parse::Parsed* new_parsed) { 108 URLComponentSource<char> source(base); 109 url_parse::Parsed parsed(base_parsed); 110 SetupOverrideComponents(base, replacements, &source, &parsed); 111 return DoCanonicalizePathURL<char, unsigned char>( 112 source, parsed, output, new_parsed); 113 } 114 115 bool ReplacePathURL(const char* base, 116 const url_parse::Parsed& base_parsed, 117 const Replacements<char16>& replacements, 118 CanonOutput* output, 119 url_parse::Parsed* new_parsed) { 120 RawCanonOutput<1024> utf8; 121 URLComponentSource<char> source(base); 122 url_parse::Parsed parsed(base_parsed); 123 SetupUTF16OverrideComponents(base, replacements, &utf8, &source, &parsed); 124 return DoCanonicalizePathURL<char, unsigned char>( 125 source, parsed, output, new_parsed); 126 } 127 128 } // namespace url_canon 129
