op public repos

Blame

Date:: Sat Jan 9 20:32:23 2021 UTC
Message:: switch to Bjoern Hoehrmann UTF-8 decoder It's correct, while my hacked valid_multibyte_utf8 would allow things that aren't technically UTF8.
Actions:: History | Blob | Raw File
  1 33d32d1f 2020-12-25 op /*
  2 33d32d1f 2020-12-25 op  * Copyright (c) 2020 Omar Polo <op@omarpolo.com>
  3 33d32d1f 2020-12-25 op  *
  4 33d32d1f 2020-12-25 op  * Permission to use, copy, modify, and distribute this software for any
  5 33d32d1f 2020-12-25 op  * purpose with or without fee is hereby granted, provided that the above
  6 33d32d1f 2020-12-25 op  * copyright notice and this permission notice appear in all copies.
  7 33d32d1f 2020-12-25 op  *
  8 33d32d1f 2020-12-25 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 33d32d1f 2020-12-25 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 33d32d1f 2020-12-25 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 33d32d1f 2020-12-25 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 33d32d1f 2020-12-25 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 33d32d1f 2020-12-25 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 33d32d1f 2020-12-25 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 33d32d1f 2020-12-25 op  */
 16 33d32d1f 2020-12-25 op 
 17 33d32d1f 2020-12-25 op #include <ctype.h>
 18 33d32d1f 2020-12-25 op #include <string.h>
 19 33d32d1f 2020-12-25 op 
 20 33d32d1f 2020-12-25 op #include "gmid.h"
 21 33d32d1f 2020-12-25 op 
 22 33d32d1f 2020-12-25 op /*
 23 33d32d1f 2020-12-25 op  * Notes from RFC3986
 24 33d32d1f 2020-12-25 op  *
 25 33d32d1f 2020-12-25 op  * => gemini://tanso.net/rfc/rfc3986.txt
 26 33d32d1f 2020-12-25 op  *
 27 33d32d1f 2020-12-25 op  *
 28 33d32d1f 2020-12-25 op  * ABNF
 29 33d32d1f 2020-12-25 op  * ====
 30 33d32d1f 2020-12-25 op  *
 31 33d32d1f 2020-12-25 op  * pct-encoded	"%" HEXDIG HEXDIG
 32 33d32d1f 2020-12-25 op  *
 33 33d32d1f 2020-12-25 op  * reserved	= gen-delims / sub-delimis
 34 33d32d1f 2020-12-25 op  * gen-delims	= ":" / "/" / "?" / "#" / "[" / "]" / "@"
 35 33d32d1f 2020-12-25 op  * sub-delims	= "!" / "$" / "&" / "'" / "(" / ")"
 36 33d32d1f 2020-12-25 op  * 		/ "*" / "+" / "," / ";" / "="
 37 33d32d1f 2020-12-25 op  *
 38 33d32d1f 2020-12-25 op  * unreserved	= ALPHA / DIGIT / "-" / "." / "_" / "~"
 39 33d32d1f 2020-12-25 op  *
 40 33d32d1f 2020-12-25 op  * URI		= scheme ":" hier-part [ "?" query ] [ "#" fragment ]
 41 33d32d1f 2020-12-25 op  *
 42 33d32d1f 2020-12-25 op  * hier-part	= "//" authority path-abempty
 43 33d32d1f 2020-12-25 op  * 		/ path-absolute
 44 33d32d1f 2020-12-25 op  * 		/ path-rootless
 45 33d32d1f 2020-12-25 op  * 		/ path-empty
 46 33d32d1f 2020-12-25 op  *
 47 33d32d1f 2020-12-25 op  * scheme	= ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
 48 33d32d1f 2020-12-25 op  *
 49 33d32d1f 2020-12-25 op  * authority	= [ userinfo "@" ] host [ ":" port ]
 50 33d32d1f 2020-12-25 op  *
 51 33d32d1f 2020-12-25 op  * (note that userinfo isn't used for Gemini URL)
 52 33d32d1f 2020-12-25 op  *
 53 33d32d1f 2020-12-25 op  * host		= IP-literal / IPv4address / reg-name
 54 33d32d1f 2020-12-25 op  * reg-name	= *( unreserved / pct-encoded / sub-delims )
 55 33d32d1f 2020-12-25 op  *
 56 33d32d1f 2020-12-25 op  * port		= *DIGIT
 57 33d32d1f 2020-12-25 op  *
 58 33d32d1f 2020-12-25 op  * path		= path-abemty	; begins with "/" or is empty
 59 33d32d1f 2020-12-25 op  * 		/ path-absolute	; begins with "/" but not "//"
 60 33d32d1f 2020-12-25 op  * 		/ path-noscheme	; begins with a non-colon segment
 61 33d32d1f 2020-12-25 op  * 		/ path-rootless ; begins with a segment
 62 33d32d1f 2020-12-25 op  * 		/ path-empty	; zero characters
 63 33d32d1f 2020-12-25 op  *
 64 33d32d1f 2020-12-25 op  * path-abemty		= *( "/" segment )
 65 33d32d1f 2020-12-25 op  * path-absolute	= "/" [ segment-nz *( "/" segment ) ]
 66 33d32d1f 2020-12-25 op  * path-noscheme	= ; not used
 67 33d32d1f 2020-12-25 op  * path-rootless	= ; not used
 68 33d32d1f 2020-12-25 op  * path-empty		= ; not used
 69 33d32d1f 2020-12-25 op  *
 70 33d32d1f 2020-12-25 op  * segment		= *pchar
 71 33d32d1f 2020-12-25 op  * segment-nz	= 1*pchar
 72 33d32d1f 2020-12-25 op  * segment-nz-nc	= 1*( unreserved / pct-encoded / sub-delims / "@" )
 73 33d32d1f 2020-12-25 op  * pchar		= unreserved / pct-encoded / sub-delims / ":" / "@"
 74 33d32d1f 2020-12-25 op  *
 75 33d32d1f 2020-12-25 op  * query		= *( pchar / "/" / "?" )
 76 33d32d1f 2020-12-25 op  *
 77 33d32d1f 2020-12-25 op  * fragment		= *( pchar / "/" / "?" )
 78 33d32d1f 2020-12-25 op  *
 79 33d32d1f 2020-12-25 op  *
 80 33d32d1f 2020-12-25 op  * EXAMPLE
 81 33d32d1f 2020-12-25 op  * =======
 82 33d32d1f 2020-12-25 op  *
 83 33d32d1f 2020-12-25 op  *    foo://example.com:8042/over/there?name=ferret#nose
 84 33d32d1f 2020-12-25 op  *    \_/   \______________/\_________/ \_________/ \__/
 85 33d32d1f 2020-12-25 op  *     |           |            |            |        |
 86 33d32d1f 2020-12-25 op  *  scheme     authority       path        query   fragment
 87 33d32d1f 2020-12-25 op  *
 88 33d32d1f 2020-12-25 op  */
 89 33d32d1f 2020-12-25 op 
 90 33d32d1f 2020-12-25 op /* XXX: these macros will expand multiple times their argument */
 91 33d32d1f 2020-12-25 op 
 92 33d32d1f 2020-12-25 op #define UNRESERVED(p)				\
 93 33d32d1f 2020-12-25 op 	(isalnum(p)				\
 94 33d32d1f 2020-12-25 op 	    || p == '-'				\
 95 33d32d1f 2020-12-25 op 	    || p == '.'				\
 96 33d32d1f 2020-12-25 op 	    || p == '_'				\
 97 33d32d1f 2020-12-25 op 	    || p == '~')
 98 33d32d1f 2020-12-25 op 
 99 33d32d1f 2020-12-25 op #define SUB_DELIMITERS(p)			\
100 33d32d1f 2020-12-25 op 	(p == '!'				\
101 33d32d1f 2020-12-25 op 	    || p == '$'				\
102 33d32d1f 2020-12-25 op 	    || p == '&'				\
103 33d32d1f 2020-12-25 op 	    || p == '\''			\
104 33d32d1f 2020-12-25 op 	    || p == '('				\
105 33d32d1f 2020-12-25 op 	    || p == ')'				\
106 33d32d1f 2020-12-25 op 	    || p == '*'				\
107 33d32d1f 2020-12-25 op 	    || p == '+'				\
108 33d32d1f 2020-12-25 op 	    || p == ','				\
109 33d32d1f 2020-12-25 op 	    || p == ';'				\
110 33d32d1f 2020-12-25 op 	    || p == '=')
111 33d32d1f 2020-12-25 op 
112 33d32d1f 2020-12-25 op static int
113 33d32d1f 2020-12-25 op parse_pct_encoded(struct parser *p)
114 33d32d1f 2020-12-25 op {
115 33d32d1f 2020-12-25 op 	if (*p->uri != '%')
116 33d32d1f 2020-12-25 op 		return 0;
117 33d32d1f 2020-12-25 op 
118 33d32d1f 2020-12-25 op 	if (!isxdigit(*(p->uri+1)) || !isxdigit(*(p->uri+2))) {
119 33d32d1f 2020-12-25 op 		p->err = "illegal percent-encoding";
120 33d32d1f 2020-12-25 op 		return 0;
121 33d32d1f 2020-12-25 op 	}
122 33d32d1f 2020-12-25 op 
123 33d32d1f 2020-12-25 op 	sscanf(p->uri+1, "%2hhx", p->uri);
124 33d32d1f 2020-12-25 op 	memmove(p->uri+1, p->uri+3, strlen(p->uri+3)+1);
125 00781742 2020-12-25 op 	if (*p->uri == '\0') {
126 00781742 2020-12-25 op 		p->err = "illegal percent-encoding";
127 00781742 2020-12-25 op 		return 0;
128 00781742 2020-12-25 op 	}
129 33d32d1f 2020-12-25 op 
130 33d32d1f 2020-12-25 op 	return 1;
131 33d32d1f 2020-12-25 op }
132 33d32d1f 2020-12-25 op 
133 33d32d1f 2020-12-25 op /* ALPHA *( ALPHA / DIGIT / "+" / "-" / "." ) "://" */
134 33d32d1f 2020-12-25 op static int
135 33d32d1f 2020-12-25 op parse_scheme(struct parser *p)
136 33d32d1f 2020-12-25 op {
137 33d32d1f 2020-12-25 op 	p->parsed->schema = p->uri;
138 33d32d1f 2020-12-25 op 
139 33d32d1f 2020-12-25 op 	if (!isalpha(*p->uri)) {
140 33d32d1f 2020-12-25 op 		p->err = "illegal character in scheme";
141 33d32d1f 2020-12-25 op 		return 0;
142 33d32d1f 2020-12-25 op 	}
143 33d32d1f 2020-12-25 op 
144 33d32d1f 2020-12-25 op 	p->uri++;
145 33d32d1f 2020-12-25 op 	while (isalnum(*p->uri)
146 33d32d1f 2020-12-25 op 	    || *p->uri == '+'
147 33d32d1f 2020-12-25 op 	    || *p->uri == '-'
148 33d32d1f 2020-12-25 op 	    || *p->uri == '.')
149 33d32d1f 2020-12-25 op 		p->uri++;
150 33d32d1f 2020-12-25 op 
151 33d32d1f 2020-12-25 op 	if (*p->uri != ':') {
152 33d32d1f 2020-12-25 op 		p->err = "illegal character in scheme";
153 33d32d1f 2020-12-25 op 		return 0;
154 33d32d1f 2020-12-25 op 	}
155 33d32d1f 2020-12-25 op 
156 33d32d1f 2020-12-25 op 	*p->uri = '\0';
157 33d32d1f 2020-12-25 op 	if (*(++p->uri) != '/' || *(++p->uri) != '/') {
158 33d32d1f 2020-12-25 op 		p->err = "invalid marker after scheme";
159 33d32d1f 2020-12-25 op 		return 0;
160 33d32d1f 2020-12-25 op 	}
161 33d32d1f 2020-12-25 op 
162 33d32d1f 2020-12-25 op 	p->uri++;
163 33d32d1f 2020-12-25 op 	return 1;
164 33d32d1f 2020-12-25 op }
165 33d32d1f 2020-12-25 op 
166 33d32d1f 2020-12-25 op /* *DIGIT */
167 33d32d1f 2020-12-25 op static int
168 33d32d1f 2020-12-25 op parse_port(struct parser *p)
169 33d32d1f 2020-12-25 op {
170 33d32d1f 2020-12-25 op 	uint32_t i = 0;
171 33d32d1f 2020-12-25 op 
172 33d32d1f 2020-12-25 op 	p->parsed->port = p->uri;
173 33d32d1f 2020-12-25 op 
174 33d32d1f 2020-12-25 op 	for (; isdigit(*p->uri); p->uri++) {
175 33d32d1f 2020-12-25 op 		i = i * 10 + *p->uri - '0';
176 33d32d1f 2020-12-25 op 		if (i > UINT16_MAX) {
177 33d32d1f 2020-12-25 op 			p->err = "port number too large";
178 33d32d1f 2020-12-25 op 			return 0;
179 33d32d1f 2020-12-25 op 		}
180 33d32d1f 2020-12-25 op 	}
181 33d32d1f 2020-12-25 op 
182 33d32d1f 2020-12-25 op 	if (*p->uri != '/' && *p->uri != '\0') {
183 33d32d1f 2020-12-25 op 		p->err = "illegal character in port number";
184 33d32d1f 2020-12-25 op 		return 0;
185 33d32d1f 2020-12-25 op 	}
186 33d32d1f 2020-12-25 op 
187 33d32d1f 2020-12-25 op 	p->parsed->port_no = i;
188 33d32d1f 2020-12-25 op 
189 33d32d1f 2020-12-25 op 	if (*p->uri != '\0') {
190 33d32d1f 2020-12-25 op 		*p->uri = '\0';
191 33d32d1f 2020-12-25 op 		p->uri++;
192 33d32d1f 2020-12-25 op 	}
193 33d32d1f 2020-12-25 op 
194 33d32d1f 2020-12-25 op 	return 1;
195 33d32d1f 2020-12-25 op }
196 33d32d1f 2020-12-25 op 
197 33d32d1f 2020-12-25 op /* TODO: add support for ip-literal and ipv4addr ? */
198 33d32d1f 2020-12-25 op /* *( unreserved / sub-delims / pct-encoded ) */
199 33d32d1f 2020-12-25 op static int
200 33d32d1f 2020-12-25 op parse_authority(struct parser *p)
201 33d32d1f 2020-12-25 op {
202 33d32d1f 2020-12-25 op 	p->parsed->host = p->uri;
203 33d32d1f 2020-12-25 op 
204 33d32d1f 2020-12-25 op 	while (UNRESERVED(*p->uri)
205 33d32d1f 2020-12-25 op 	    || SUB_DELIMITERS(*p->uri)
206 33d32d1f 2020-12-25 op 	    || parse_pct_encoded(p))
207 33d32d1f 2020-12-25 op 		p->uri++;
208 33d32d1f 2020-12-25 op 
209 00781742 2020-12-25 op 	if (p->err != NULL)
210 00781742 2020-12-25 op 		return 0;
211 00781742 2020-12-25 op 
212 33d32d1f 2020-12-25 op 	if (*p->uri == ':') {
213 33d32d1f 2020-12-25 op 		*p->uri = '\0';
214 33d32d1f 2020-12-25 op 		p->uri++;
215 33d32d1f 2020-12-25 op 		return parse_port(p);
216 33d32d1f 2020-12-25 op 	}
217 33d32d1f 2020-12-25 op 
218 33d32d1f 2020-12-25 op 	if (*p->uri == '/') {
219 33d32d1f 2020-12-25 op 		*p->uri = '\0';
220 33d32d1f 2020-12-25 op 		p->uri++;
221 33d32d1f 2020-12-25 op 		return 1;
222 33d32d1f 2020-12-25 op 	}
223 33d32d1f 2020-12-25 op 
224 33d32d1f 2020-12-25 op 	if (*p->uri == '\0')
225 33d32d1f 2020-12-25 op 		return 1;
226 33d32d1f 2020-12-25 op 
227 33d32d1f 2020-12-25 op 	p->err = "illegal character in authority section";
228 33d32d1f 2020-12-25 op 	return 0;
229 33d32d1f 2020-12-25 op }
230 33d32d1f 2020-12-25 op 
231 33d32d1f 2020-12-25 op /* Routine for path_clean.  Elide the pointed .. with the preceding
232 33d32d1f 2020-12-25 op  * element.  Return 0 if it's not possible.  incr is the length of
233 33d32d1f 2020-12-25 op  * the increment, 3 for ../ and 2 for .. */
234 33d32d1f 2020-12-25 op static int
235 33d32d1f 2020-12-25 op path_elide_dotdot(char *path, char *i, int incr)
236 33d32d1f 2020-12-25 op {
237 33d32d1f 2020-12-25 op 	char *j;
238 33d32d1f 2020-12-25 op 
239 33d32d1f 2020-12-25 op 	if (i == path)
240 33d32d1f 2020-12-25 op 		return 0;
241 33d32d1f 2020-12-25 op 	for (j = i-2; j != path && *j != '/'; j--)
242 33d32d1f 2020-12-25 op                 /* noop */ ;
243 33d32d1f 2020-12-25 op 	if (*j == '/')
244 33d32d1f 2020-12-25 op 		j++;
245 33d32d1f 2020-12-25 op 	i += incr;
246 33d32d1f 2020-12-25 op 	memmove(j, i, strlen(i)+1);
247 33d32d1f 2020-12-25 op 	return 1;
248 33d32d1f 2020-12-25 op }
249 33d32d1f 2020-12-25 op 
250 33d32d1f 2020-12-25 op /*
251 33d32d1f 2020-12-25 op  * Use an algorithm similar to the one implemented in go' path.Clean:
252 33d32d1f 2020-12-25 op  *
253 33d32d1f 2020-12-25 op  * 1. Replace multiple slashes with a single slash
254 33d32d1f 2020-12-25 op  * 2. Eliminate each . path name element
255 33d32d1f 2020-12-25 op  * 3. Eliminate each inner .. along with the non-.. element that precedes it
256 33d32d1f 2020-12-25 op  * 4. Eliminate trailing .. if possible or error (go would only discard)
257 33d32d1f 2020-12-25 op  *
258 33d32d1f 2020-12-25 op  * Unlike path.Clean, this function return the empty string if the
259 33d32d1f 2020-12-25 op  * original path is equivalent to "/".
260 33d32d1f 2020-12-25 op  */
261 33d32d1f 2020-12-25 op static int
262 33d32d1f 2020-12-25 op path_clean(char *path)
263 33d32d1f 2020-12-25 op {
264 33d32d1f 2020-12-25 op 	char *i;
265 33d32d1f 2020-12-25 op 
266 33d32d1f 2020-12-25 op 	/* 1. replace multiple slashes with a single one */
267 33d32d1f 2020-12-25 op 	for (i = path; *i; ++i) {
268 33d32d1f 2020-12-25 op 		if (*i == '/' && *(i+1) == '/') {
269 33d32d1f 2020-12-25 op 			memmove(i, i+1, strlen(i)); /* move also the \0 */
270 33d32d1f 2020-12-25 op 			i--;
271 33d32d1f 2020-12-25 op 		}
272 33d32d1f 2020-12-25 op 	}
273 33d32d1f 2020-12-25 op 
274 33d32d1f 2020-12-25 op 	/* 2. eliminate each . path name element */
275 33d32d1f 2020-12-25 op 	for (i = path; *i; ++i) {
276 33d32d1f 2020-12-25 op 		if ((i == path || *i == '/') && *(i+1) == '.' &&
277 33d32d1f 2020-12-25 op 		    *(i+2) == '/') {
278 33d32d1f 2020-12-25 op 			/* move also the \0 */
279 33d32d1f 2020-12-25 op 			memmove(i, i+2, strlen(i)-1);
280 33d32d1f 2020-12-25 op 			i--;
281 33d32d1f 2020-12-25 op 		}
282 33d32d1f 2020-12-25 op 	}
283 33d32d1f 2020-12-25 op 	if (!strcmp(path, ".") || !strcmp(path, "/.")) {
284 33d32d1f 2020-12-25 op 		*path = '\0';
285 33d32d1f 2020-12-25 op 		return 1;
286 33d32d1f 2020-12-25 op 	}
287 33d32d1f 2020-12-25 op 
288 33d32d1f 2020-12-25 op 	/* 3. eliminate each inner .. along with the preceding non-.. */
289 33d32d1f 2020-12-25 op 	for (i = strstr(path, "../"); i != NULL; i = strstr(path, ".."))
290 33d32d1f 2020-12-25 op 		if (!path_elide_dotdot(path, i, 3))
291 33d32d1f 2020-12-25 op 			return 0;
292 33d32d1f 2020-12-25 op 
293 33d32d1f 2020-12-25 op 	/* 4. eliminate trailing ..*/
294 33d32d1f 2020-12-25 op 	if ((i = strstr(path, "..")) != NULL)
295 33d32d1f 2020-12-25 op 		if (!path_elide_dotdot(path, i, 2))
296 33d32d1f 2020-12-25 op 			return 0;
297 33d32d1f 2020-12-25 op 
298 33d32d1f 2020-12-25 op 	return 1;
299 33d32d1f 2020-12-25 op }
300 33d32d1f 2020-12-25 op 
301 33d32d1f 2020-12-25 op static int
302 33d32d1f 2020-12-25 op parse_query(struct parser *p)
303 33d32d1f 2020-12-25 op {
304 33d32d1f 2020-12-25 op 	p->parsed->query = p->uri;
305 33d32d1f 2020-12-25 op 	if (*p->uri == '\0')
306 33d32d1f 2020-12-25 op 		return 1;
307 33d32d1f 2020-12-25 op 
308 33d32d1f 2020-12-25 op 	while (UNRESERVED(*p->uri)
309 33d32d1f 2020-12-25 op 	    || SUB_DELIMITERS(*p->uri)
310 33d32d1f 2020-12-25 op 	    || *p->uri == '/'
311 33d32d1f 2020-12-25 op 	    || *p->uri == '?'
312 df6ca41d 2020-12-25 op 	    || parse_pct_encoded(p)
313 df6ca41d 2020-12-25 op 	    || valid_multibyte_utf8(p))
314 33d32d1f 2020-12-25 op 		p->uri++;
315 33d32d1f 2020-12-25 op 
316 00781742 2020-12-25 op 	if (p->err != NULL)
317 00781742 2020-12-25 op 		return 0;
318 00781742 2020-12-25 op 
319 33d32d1f 2020-12-25 op 	if (*p->uri != '\0' && *p->uri != '#') {
320 33d32d1f 2020-12-25 op 		p->err = "illegal character in query";
321 33d32d1f 2020-12-25 op 		return 0;
322 33d32d1f 2020-12-25 op 	}
323 33d32d1f 2020-12-25 op 
324 33d32d1f 2020-12-25 op 	if (*p->uri != '\0') {
325 33d32d1f 2020-12-25 op 		*p->uri = '\0';
326 33d32d1f 2020-12-25 op 		p->uri++;
327 33d32d1f 2020-12-25 op 	}
328 33d32d1f 2020-12-25 op 
329 33d32d1f 2020-12-25 op 	return 1;
330 33d32d1f 2020-12-25 op }
331 33d32d1f 2020-12-25 op 
332 33d32d1f 2020-12-25 op /* don't even bother */
333 33d32d1f 2020-12-25 op static int
334 33d32d1f 2020-12-25 op parse_fragment(struct parser *p)
335 33d32d1f 2020-12-25 op {
336 33d32d1f 2020-12-25 op 	p->parsed->fragment = p->uri;
337 33d32d1f 2020-12-25 op 	return 1;
338 33d32d1f 2020-12-25 op }
339 33d32d1f 2020-12-25 op 
340 33d32d1f 2020-12-25 op /* XXX: is it too broad? */
341 33d32d1f 2020-12-25 op /* *(pchar / "/") */
342 33d32d1f 2020-12-25 op static int
343 33d32d1f 2020-12-25 op parse_path(struct parser *p)
344 33d32d1f 2020-12-25 op {
345 33d32d1f 2020-12-25 op 	char c;
346 33d32d1f 2020-12-25 op 
347 33d32d1f 2020-12-25 op 	p->parsed->path = p->uri;
348 33d32d1f 2020-12-25 op 	if (*p->uri == '\0') {
349 33d32d1f 2020-12-25 op 		p->parsed->query = p->parsed->fragment = p->uri;
350 33d32d1f 2020-12-25 op 		return 1;
351 33d32d1f 2020-12-25 op 	}
352 33d32d1f 2020-12-25 op 
353 33d32d1f 2020-12-25 op 	while (UNRESERVED(*p->uri)
354 33d32d1f 2020-12-25 op 	    || SUB_DELIMITERS(*p->uri)
355 33d32d1f 2020-12-25 op 	    || *p->uri == '/'
356 df6ca41d 2020-12-25 op 	    || parse_pct_encoded(p)
357 df6ca41d 2020-12-25 op 	    || valid_multibyte_utf8(p))
358 33d32d1f 2020-12-25 op 		p->uri++;
359 33d32d1f 2020-12-25 op 
360 00781742 2020-12-25 op 	if (p->err != NULL)
361 00781742 2020-12-25 op 		return 0;
362 00781742 2020-12-25 op 
363 33d32d1f 2020-12-25 op 	if (*p->uri != '\0' && *p->uri != '?' && *p->uri != '#') {
364 33d32d1f 2020-12-25 op 		p->err = "illegal character in path";
365 33d32d1f 2020-12-25 op 		return 0;
366 33d32d1f 2020-12-25 op 	}
367 33d32d1f 2020-12-25 op 
368 33d32d1f 2020-12-25 op 	if (*p->uri != '\0') {
369 33d32d1f 2020-12-25 op 		c = *p->uri;
370 33d32d1f 2020-12-25 op 		*p->uri = '\0';
371 33d32d1f 2020-12-25 op 		p->uri++;
372 33d32d1f 2020-12-25 op 
373 33d32d1f 2020-12-25 op 		if (c == '#') {
374 33d32d1f 2020-12-25 op 			if (!parse_fragment(p))
375 33d32d1f 2020-12-25 op 				return 0;
376 33d32d1f 2020-12-25 op 		} else
377 33d32d1f 2020-12-25 op 			if (!parse_query(p) || !parse_fragment(p))
378 33d32d1f 2020-12-25 op 				return 0;
379 33d32d1f 2020-12-25 op 	}
380 33d32d1f 2020-12-25 op 
381 33d32d1f 2020-12-25 op 	if (!path_clean(p->parsed->path)) {
382 33d32d1f 2020-12-25 op 		p->err = "illegal path";
383 33d32d1f 2020-12-25 op 		return 0;
384 33d32d1f 2020-12-25 op 	}
385 33d32d1f 2020-12-25 op 
386 33d32d1f 2020-12-25 op 	return 1;
387 33d32d1f 2020-12-25 op }
388 33d32d1f 2020-12-25 op 
389 33d32d1f 2020-12-25 op int
390 33d32d1f 2020-12-25 op parse_uri(char *uri, struct uri *ret, const char **err_ret)
391 33d32d1f 2020-12-25 op {
392 33d32d1f 2020-12-25 op 	char *end;
393 33d32d1f 2020-12-25 op 	struct parser p = {uri, ret, NULL};
394 33d32d1f 2020-12-25 op 
395 33d32d1f 2020-12-25 op 	bzero(ret, sizeof(*ret));
396 33d32d1f 2020-12-25 op 
397 33d32d1f 2020-12-25 op 	/* initialize optional stuff to the empty string */
398 33d32d1f 2020-12-25 op 	end = uri + strlen(uri);
399 33d32d1f 2020-12-25 op 	p.parsed->port = end;
400 33d32d1f 2020-12-25 op 	p.parsed->path = end;
401 33d32d1f 2020-12-25 op 	p.parsed->query = end;
402 33d32d1f 2020-12-25 op 	p.parsed->fragment = end;
403 33d32d1f 2020-12-25 op 
404 33d32d1f 2020-12-25 op 	if (!parse_scheme(&p) || !parse_authority(&p) || !parse_path(&p)) {
405 33d32d1f 2020-12-25 op 		*err_ret = p.err;
406 33d32d1f 2020-12-25 op 		return 0;
407 33d32d1f 2020-12-25 op 	}
408 33d32d1f 2020-12-25 op 
409 33d32d1f 2020-12-25 op 	*err_ret = NULL;
410 33d32d1f 2020-12-25 op 	return 1;
411 33d32d1f 2020-12-25 op }
412 33d32d1f 2020-12-25 op 
413 33d32d1f 2020-12-25 op int
414 33d32d1f 2020-12-25 op trim_req_uri(char *uri)
415 33d32d1f 2020-12-25 op {
416 33d32d1f 2020-12-25 op 	char *i;
417 33d32d1f 2020-12-25 op 
418 33d32d1f 2020-12-25 op 	if ((i = strstr(uri, "\r\n")) == NULL)
419 33d32d1f 2020-12-25 op 		return 0;
420 33d32d1f 2020-12-25 op 	*i = '\0';
421 33d32d1f 2020-12-25 op 	return 1;
422 33d32d1f 2020-12-25 op }