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1 | /* |
2 | * uriparser - RFC 3986 URI parsing library | |
3 | * | |
4 | * Copyright (C) 2007, Weijia Song <songweijia@gmail.com> | |
5 | * Copyright (C) 2007, Sebastian Pipping <sebastian@pipping.org> | |
6 | * All rights reserved. | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
11 | * | |
12 | * * Redistributions of source code must retain the above | |
13 | * copyright notice, this list of conditions and the following | |
14 | * disclaimer. | |
15 | * | |
16 | * * Redistributions in binary form must reproduce the above | |
17 | * copyright notice, this list of conditions and the following | |
18 | * disclaimer in the documentation and/or other materials | |
19 | * provided with the distribution. | |
20 | * | |
21 | * * Neither the name of the <ORGANIZATION> nor the names of its | |
22 | * contributors may be used to endorse or promote products | |
23 | * derived from this software without specific prior written | |
24 | * permission. | |
25 | * | |
26 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
27 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
28 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |
29 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |
30 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | |
31 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
32 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
33 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
34 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
35 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
36 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
37 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
38 | */ | |
39 | ||
40 | /* What encodings are enabled? */ | |
41 | #include "UriDefsConfig.h" | |
42 | #if (!defined(URI_PASS_ANSI) && !defined(URI_PASS_UNICODE)) | |
43 | /* Include SELF twice */ | |
44 | # ifdef URI_ENABLE_ANSI | |
45 | # define URI_PASS_ANSI 1 | |
46 | # include "UriFile.c" | |
47 | # undef URI_PASS_ANSI | |
48 | # endif | |
49 | # ifdef URI_ENABLE_UNICODE | |
50 | # define URI_PASS_UNICODE 1 | |
51 | # include "UriFile.c" | |
52 | # undef URI_PASS_UNICODE | |
53 | # endif | |
54 | #else | |
55 | # ifdef URI_PASS_ANSI | |
56 | # include "UriDefsAnsi.h" | |
57 | # else | |
58 | # include "UriDefsUnicode.h" | |
59 | # include <wchar.h> | |
60 | # endif | |
61 | ||
62 | ||
63 | ||
64 | #ifndef URI_DOXYGEN | |
65 | # include "Uri.h" | |
66 | #endif | |
67 | ||
68 | ||
69 | ||
70 | #include <stdlib.h> /* for size_t, avoiding stddef.h for older MSVCs */ | |
71 | ||
72 | ||
73 | ||
74 | static URI_INLINE int URI_FUNC(FilenameToUriString)(const URI_CHAR * filename, | |
75 | URI_CHAR * uriString, UriBool fromUnix) { | |
76 | const URI_CHAR * input = filename; | |
77 | const URI_CHAR * lastSep = input - 1; | |
78 | UriBool firstSegment = URI_TRUE; | |
79 | URI_CHAR * output = uriString; | |
80 | UriBool absolute; | |
81 | UriBool is_windows_network; | |
82 | ||
83 | if ((filename == NULL) || (uriString == NULL)) { | |
84 | return URI_ERROR_NULL; | |
85 | } | |
86 | ||
87 | is_windows_network = (filename[0] == _UT('\\')) && (filename[1] == _UT('\\')); | |
88 | absolute = fromUnix | |
89 | ? (filename[0] == _UT('/')) | |
90 | : (((filename[0] != _UT('\0')) && (filename[1] == _UT(':'))) | |
91 | || is_windows_network); | |
92 | ||
93 | if (absolute) { | |
94 | const URI_CHAR * const prefix = fromUnix | |
95 | ? _UT("file://") | |
96 | : is_windows_network | |
97 | ? _UT("file:") | |
98 | : _UT("file:///"); | |
99 | const size_t prefixLen = URI_STRLEN(prefix); | |
100 | ||
101 | /* Copy prefix */ | |
102 | memcpy(uriString, prefix, prefixLen * sizeof(URI_CHAR)); | |
103 | output += prefixLen; | |
104 | } | |
105 | ||
106 | /* Copy and escape on the fly */ | |
107 | for (;;) { | |
108 | if ((input[0] == _UT('\0')) | |
109 | || (fromUnix && input[0] == _UT('/')) | |
110 | || (!fromUnix && input[0] == _UT('\\'))) { | |
111 | /* Copy text after last separator */ | |
112 | if (lastSep + 1 < input) { | |
113 | if (!fromUnix && absolute && (firstSegment == URI_TRUE)) { | |
114 | /* Quick hack to not convert "C:" to "C%3A" */ | |
115 | const int charsToCopy = (int)(input - (lastSep + 1)); | |
116 | memcpy(output, lastSep + 1, charsToCopy * sizeof(URI_CHAR)); | |
117 | output += charsToCopy; | |
118 | } else { | |
119 | output = URI_FUNC(EscapeEx)(lastSep + 1, input, output, | |
120 | URI_FALSE, URI_FALSE); | |
121 | } | |
122 | } | |
123 | firstSegment = URI_FALSE; | |
124 | } | |
125 | ||
126 | if (input[0] == _UT('\0')) { | |
127 | output[0] = _UT('\0'); | |
128 | break; | |
129 | } else if (fromUnix && (input[0] == _UT('/'))) { | |
130 | /* Copy separators unmodified */ | |
131 | output[0] = _UT('/'); | |
132 | output++; | |
133 | lastSep = input; | |
134 | } else if (!fromUnix && (input[0] == _UT('\\'))) { | |
135 | /* Convert backslashes to forward slashes */ | |
136 | output[0] = _UT('/'); | |
137 | output++; | |
138 | lastSep = input; | |
139 | } | |
140 | input++; | |
141 | } | |
142 | ||
143 | return URI_SUCCESS; | |
144 | } | |
145 | ||
146 | ||
147 | ||
148 | static URI_INLINE int URI_FUNC(UriStringToFilename)(const URI_CHAR * uriString, | |
149 | URI_CHAR * filename, UriBool toUnix) { | |
150 | if ((uriString == NULL) || (filename == NULL)) { | |
151 | return URI_ERROR_NULL; | |
152 | } | |
153 | ||
154 | { | |
155 | const UriBool file_unknown_slashes = | |
156 | URI_STRNCMP(uriString, _UT("file:"), URI_STRLEN(_UT("file:"))) == 0; | |
157 | const UriBool file_one_or_more_slashes = file_unknown_slashes | |
158 | && (URI_STRNCMP(uriString, _UT("file:/"), URI_STRLEN(_UT("file:/"))) == 0); | |
159 | const UriBool file_two_or_more_slashes = file_one_or_more_slashes | |
160 | && (URI_STRNCMP(uriString, _UT("file://"), URI_STRLEN(_UT("file://"))) == 0); | |
161 | const UriBool file_three_or_more_slashes = file_two_or_more_slashes | |
162 | && (URI_STRNCMP(uriString, _UT("file:///"), URI_STRLEN(_UT("file:///"))) == 0); | |
163 | ||
164 | const size_t charsToSkip = file_two_or_more_slashes | |
165 | ? file_three_or_more_slashes | |
166 | ? toUnix | |
167 | /* file:///bin/bash */ | |
168 | ? URI_STRLEN(_UT("file://")) | |
169 | /* file:///E:/Documents%20and%20Settings */ | |
170 | : URI_STRLEN(_UT("file:///")) | |
171 | /* file://Server01/Letter.txt */ | |
172 | : URI_STRLEN(_UT("file://")) | |
173 | : ((file_one_or_more_slashes && toUnix) | |
174 | /* file:/bin/bash */ | |
175 | /* https://tools.ietf.org/html/rfc8089#appendix-B */ | |
176 | ? URI_STRLEN(_UT("file:")) | |
177 | : ((! toUnix && file_unknown_slashes && ! file_one_or_more_slashes) | |
178 | /* file:c:/path/to/file */ | |
179 | /* https://tools.ietf.org/html/rfc8089#appendix-E.2 */ | |
180 | ? URI_STRLEN(_UT("file:")) | |
181 | : 0)); | |
182 | const size_t charsToCopy = URI_STRLEN(uriString + charsToSkip) + 1; | |
183 | ||
184 | const UriBool is_windows_network_with_authority = | |
185 | (toUnix == URI_FALSE) | |
186 | && file_two_or_more_slashes | |
187 | && ! file_three_or_more_slashes; | |
188 | ||
189 | URI_CHAR * const unescape_target = is_windows_network_with_authority | |
190 | ? (filename + 2) | |
191 | : filename; | |
192 | ||
193 | if (is_windows_network_with_authority) { | |
194 | filename[0] = '\\'; | |
195 | filename[1] = '\\'; | |
196 | } | |
197 | ||
198 | memcpy(unescape_target, uriString + charsToSkip, charsToCopy * sizeof(URI_CHAR)); | |
199 | URI_FUNC(UnescapeInPlaceEx)(filename, URI_FALSE, URI_BR_DONT_TOUCH); | |
200 | } | |
201 | ||
202 | /* Convert forward slashes to backslashes */ | |
203 | if (!toUnix) { | |
204 | URI_CHAR * walker = filename; | |
205 | while (walker[0] != _UT('\0')) { | |
206 | if (walker[0] == _UT('/')) { | |
207 | walker[0] = _UT('\\'); | |
208 | } | |
209 | walker++; | |
210 | } | |
211 | } | |
212 | ||
213 | return URI_SUCCESS; | |
214 | } | |
215 | ||
216 | ||
217 | ||
218 | int URI_FUNC(UnixFilenameToUriString)(const URI_CHAR * filename, URI_CHAR * uriString) { | |
219 | return URI_FUNC(FilenameToUriString)(filename, uriString, URI_TRUE); | |
220 | } | |
221 | ||
222 | ||
223 | ||
224 | int URI_FUNC(WindowsFilenameToUriString)(const URI_CHAR * filename, URI_CHAR * uriString) { | |
225 | return URI_FUNC(FilenameToUriString)(filename, uriString, URI_FALSE); | |
226 | } | |
227 | ||
228 | ||
229 | ||
230 | int URI_FUNC(UriStringToUnixFilename)(const URI_CHAR * uriString, URI_CHAR * filename) { | |
231 | return URI_FUNC(UriStringToFilename)(uriString, filename, URI_TRUE); | |
232 | } | |
233 | ||
234 | ||
235 | ||
236 | int URI_FUNC(UriStringToWindowsFilename)(const URI_CHAR * uriString, URI_CHAR * filename) { | |
237 | return URI_FUNC(UriStringToFilename)(uriString, filename, URI_FALSE); | |
238 | } | |
239 | ||
240 | ||
241 | ||
242 | #endif |