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 /**
41 * @file UriIp4.c
42 * Holds the IPv4 parser implementation.
43 * NOTE: This source file includes itself twice.
44 */
45
46 /* What encodings are enabled? */
47 #include "UriDefsConfig.h"
48 #if (!defined(URI_PASS_ANSI) && !defined(URI_PASS_UNICODE))
49 /* Include SELF twice */
50 # ifdef URI_ENABLE_ANSI
51 # define URI_PASS_ANSI 1
52 # include "UriIp4.c"
53 # undef URI_PASS_ANSI
54 # endif
55 # ifdef URI_ENABLE_UNICODE
56 # define URI_PASS_UNICODE 1
57 # include "UriIp4.c"
58 # undef URI_PASS_UNICODE
59 # endif
60 #else
61 # ifdef URI_PASS_ANSI
62 # include "UriDefsAnsi.h"
63 # else
64 # include "UriDefsUnicode.h"
65 # endif
66
67
68
69 #ifndef URI_DOXYGEN
70 # include "UriIp4.h"
71 # include "UriIp4Base.h"
72 # include "UriBase.h"
73 #endif
74
75
76
77 /* Prototypes */
78 static const URI_CHAR * URI_FUNC(ParseDecOctet)(UriIp4Parser * parser,
79 const URI_CHAR * first, const URI_CHAR * afterLast);
80 static const URI_CHAR * URI_FUNC(ParseDecOctetOne)(UriIp4Parser * parser,
81 const URI_CHAR * first, const URI_CHAR * afterLast);
82 static const URI_CHAR * URI_FUNC(ParseDecOctetTwo)(UriIp4Parser * parser,
83 const URI_CHAR * first, const URI_CHAR * afterLast);
84 static const URI_CHAR * URI_FUNC(ParseDecOctetThree)(UriIp4Parser * parser,
85 const URI_CHAR * first, const URI_CHAR * afterLast);
86 static const URI_CHAR * URI_FUNC(ParseDecOctetFour)(UriIp4Parser * parser,
87 const URI_CHAR * first, const URI_CHAR * afterLast);
88
89
90
91 /*
92 * [ipFourAddress]->[decOctet]<.>[decOctet]<.>[decOctet]<.>[decOctet]
93 */
URI_FUNC(ParseIpFourAddress)94 int URI_FUNC(ParseIpFourAddress)(unsigned char * octetOutput,
95 const URI_CHAR * first, const URI_CHAR * afterLast) {
96 const URI_CHAR * after;
97 UriIp4Parser parser;
98
99 /* Essential checks */
100 if ((octetOutput == NULL) || (first == NULL)
101 || (afterLast <= first)) {
102 return URI_ERROR_SYNTAX;
103 }
104
105 /* Reset parser */
106 parser.stackCount = 0;
107
108 /* Octet #1 */
109 after = URI_FUNC(ParseDecOctet)(&parser, first, afterLast);
110 if ((after == NULL) || (after >= afterLast) || (*after != _UT('.'))) {
111 return URI_ERROR_SYNTAX;
112 }
113 uriStackToOctet(&parser, octetOutput);
114
115 /* Octet #2 */
116 after = URI_FUNC(ParseDecOctet)(&parser, after + 1, afterLast);
117 if ((after == NULL) || (after >= afterLast) || (*after != _UT('.'))) {
118 return URI_ERROR_SYNTAX;
119 }
120 uriStackToOctet(&parser, octetOutput + 1);
121
122 /* Octet #3 */
123 after = URI_FUNC(ParseDecOctet)(&parser, after + 1, afterLast);
124 if ((after == NULL) || (after >= afterLast) || (*after != _UT('.'))) {
125 return URI_ERROR_SYNTAX;
126 }
127 uriStackToOctet(&parser, octetOutput + 2);
128
129 /* Octet #4 */
130 after = URI_FUNC(ParseDecOctet)(&parser, after + 1, afterLast);
131 if (after != afterLast) {
132 return URI_ERROR_SYNTAX;
133 }
134 uriStackToOctet(&parser, octetOutput + 3);
135
136 return URI_SUCCESS;
137 }
138
139
140
141 /*
142 * [decOctet]-><0>
143 * [decOctet]-><1>[decOctetOne]
144 * [decOctet]-><2>[decOctetTwo]
145 * [decOctet]-><3>[decOctetThree]
146 * [decOctet]-><4>[decOctetThree]
147 * [decOctet]-><5>[decOctetThree]
148 * [decOctet]-><6>[decOctetThree]
149 * [decOctet]-><7>[decOctetThree]
150 * [decOctet]-><8>[decOctetThree]
151 * [decOctet]-><9>[decOctetThree]
152 */
URI_FUNC(ParseDecOctet)153 static URI_INLINE const URI_CHAR * URI_FUNC(ParseDecOctet)(UriIp4Parser * parser,
154 const URI_CHAR * first, const URI_CHAR * afterLast) {
155 if (first >= afterLast) {
156 return NULL;
157 }
158
159 switch (*first) {
160 case _UT('0'):
161 uriPushToStack(parser, 0);
162 return first + 1;
163
164 case _UT('1'):
165 uriPushToStack(parser, 1);
166 return (const URI_CHAR *)URI_FUNC(ParseDecOctetOne)(parser, first + 1, afterLast);
167
168 case _UT('2'):
169 uriPushToStack(parser, 2);
170 return (const URI_CHAR *)URI_FUNC(ParseDecOctetTwo)(parser, first + 1, afterLast);
171
172 case _UT('3'):
173 case _UT('4'):
174 case _UT('5'):
175 case _UT('6'):
176 case _UT('7'):
177 case _UT('8'):
178 case _UT('9'):
179 uriPushToStack(parser, (unsigned char)(9 + *first - _UT('9')));
180 return (const URI_CHAR *)URI_FUNC(ParseDecOctetThree)(parser, first + 1, afterLast);
181
182 default:
183 return NULL;
184 }
185 }
186
187
188
189 /*
190 * [decOctetOne]-><NULL>
191 * [decOctetOne]->[DIGIT][decOctetThree]
192 */
URI_FUNC(ParseDecOctetOne)193 static URI_INLINE const URI_CHAR * URI_FUNC(ParseDecOctetOne)(UriIp4Parser * parser,
194 const URI_CHAR * first, const URI_CHAR * afterLast) {
195 if (first >= afterLast) {
196 return afterLast;
197 }
198
199 switch (*first) {
200 case _UT('0'):
201 case _UT('1'):
202 case _UT('2'):
203 case _UT('3'):
204 case _UT('4'):
205 case _UT('5'):
206 case _UT('6'):
207 case _UT('7'):
208 case _UT('8'):
209 case _UT('9'):
210 uriPushToStack(parser, (unsigned char)(9 + *first - _UT('9')));
211 return (const URI_CHAR *)URI_FUNC(ParseDecOctetThree)(parser, first + 1, afterLast);
212
213 default:
214 return first;
215 }
216 }
217
218
219
220 /*
221 * [decOctetTwo]-><NULL>
222 * [decOctetTwo]-><0>[decOctetThree]
223 * [decOctetTwo]-><1>[decOctetThree]
224 * [decOctetTwo]-><2>[decOctetThree]
225 * [decOctetTwo]-><3>[decOctetThree]
226 * [decOctetTwo]-><4>[decOctetThree]
227 * [decOctetTwo]-><5>[decOctetFour]
228 * [decOctetTwo]-><6>
229 * [decOctetTwo]-><7>
230 * [decOctetTwo]-><8>
231 * [decOctetTwo]-><9>
232 */
URI_FUNC(ParseDecOctetTwo)233 static URI_INLINE const URI_CHAR * URI_FUNC(ParseDecOctetTwo)(UriIp4Parser * parser,
234 const URI_CHAR * first, const URI_CHAR * afterLast) {
235 if (first >= afterLast) {
236 return afterLast;
237 }
238
239 switch (*first) {
240 case _UT('0'):
241 case _UT('1'):
242 case _UT('2'):
243 case _UT('3'):
244 case _UT('4'):
245 uriPushToStack(parser, (unsigned char)(9 + *first - _UT('9')));
246 return (const URI_CHAR *)URI_FUNC(ParseDecOctetThree)(parser, first + 1, afterLast);
247
248 case _UT('5'):
249 uriPushToStack(parser, 5);
250 return (const URI_CHAR *)URI_FUNC(ParseDecOctetFour)(parser, first + 1, afterLast);
251
252 case _UT('6'):
253 case _UT('7'):
254 case _UT('8'):
255 case _UT('9'):
256 uriPushToStack(parser, (unsigned char)(9 + *first - _UT('9')));
257 return first + 1;
258
259 default:
260 return first;
261 }
262 }
263
264
265
266 /*
267 * [decOctetThree]-><NULL>
268 * [decOctetThree]->[DIGIT]
269 */
URI_FUNC(ParseDecOctetThree)270 static URI_INLINE const URI_CHAR * URI_FUNC(ParseDecOctetThree)(UriIp4Parser * parser,
271 const URI_CHAR * first, const URI_CHAR * afterLast) {
272 if (first >= afterLast) {
273 return afterLast;
274 }
275
276 switch (*first) {
277 case _UT('0'):
278 case _UT('1'):
279 case _UT('2'):
280 case _UT('3'):
281 case _UT('4'):
282 case _UT('5'):
283 case _UT('6'):
284 case _UT('7'):
285 case _UT('8'):
286 case _UT('9'):
287 uriPushToStack(parser, (unsigned char)(9 + *first - _UT('9')));
288 return first + 1;
289
290 default:
291 return first;
292 }
293 }
294
295
296
297 /*
298 * [decOctetFour]-><NULL>
299 * [decOctetFour]-><0>
300 * [decOctetFour]-><1>
301 * [decOctetFour]-><2>
302 * [decOctetFour]-><3>
303 * [decOctetFour]-><4>
304 * [decOctetFour]-><5>
305 */
URI_FUNC(ParseDecOctetFour)306 static URI_INLINE const URI_CHAR * URI_FUNC(ParseDecOctetFour)(UriIp4Parser * parser,
307 const URI_CHAR * first, const URI_CHAR * afterLast) {
308 if (first >= afterLast) {
309 return afterLast;
310 }
311
312 switch (*first) {
313 case _UT('0'):
314 case _UT('1'):
315 case _UT('2'):
316 case _UT('3'):
317 case _UT('4'):
318 case _UT('5'):
319 uriPushToStack(parser, (unsigned char)(9 + *first - _UT('9')));
320 return first + 1;
321
322 default:
323 return first;
324 }
325 }
326
327
328
329 #endif
330