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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 | /** | |
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 | */ | |
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 | */ | |
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 | */ | |
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 | */ | |
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 | */ | |
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 | */ | |
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 |