Commit | Line | Data |
---|---|---|
460b9539 | 1 | /* |
2 | * This file is part of DisOrder | |
39d4aa6b | 3 | * Copyright (C) 2005, 2007 Richard Kettlewell |
460b9539 | 4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
18 | * USA | |
19 | */ | |
39d4aa6b RK |
20 | /** @file lib/mime.c |
21 | * @brief Support for MIME and allied protocols | |
22 | */ | |
460b9539 | 23 | |
24 | #include <config.h> | |
25 | #include "types.h" | |
26 | ||
27 | #include <string.h> | |
28 | #include <ctype.h> | |
29 | ||
22896b25 RK |
30 | #include <stdio.h> |
31 | ||
460b9539 | 32 | #include "mem.h" |
33 | #include "mime.h" | |
34 | #include "vector.h" | |
35 | #include "hex.h" | |
39d4aa6b | 36 | #include "log.h" |
460b9539 | 37 | |
39d4aa6b | 38 | /** @brief Match whitespace characters */ |
460b9539 | 39 | static int whitespace(int c) { |
40 | switch(c) { | |
41 | case ' ': | |
42 | case '\t': | |
43 | case '\r': | |
44 | case '\n': | |
45 | return 1; | |
46 | default: | |
47 | return 0; | |
48 | } | |
49 | } | |
50 | ||
39d4aa6b | 51 | /** @brief Match RFC2045 tspecial characters */ |
460b9539 | 52 | static int tspecial(int c) { |
53 | switch(c) { | |
54 | case '(': | |
55 | case ')': | |
56 | case '<': | |
57 | case '>': | |
58 | case '@': | |
59 | case ',': | |
60 | case ';': | |
61 | case ':': | |
62 | case '\\': | |
63 | case '"': | |
64 | case '/': | |
65 | case '[': | |
66 | case ']': | |
67 | case '?': | |
68 | case '=': | |
69 | return 1; | |
70 | default: | |
71 | return 0; | |
72 | } | |
73 | } | |
74 | ||
39d4aa6b RK |
75 | /** @brief Mathc RFC2616 seprator characters */ |
76 | static int http_separator(int c) { | |
77 | switch(c) { | |
78 | case '(': | |
79 | case ')': | |
80 | case '<': | |
81 | case '>': | |
82 | case '@': | |
83 | case ',': | |
84 | case ';': | |
85 | case ':': | |
86 | case '\\': | |
87 | case '"': | |
88 | case '/': | |
89 | case '[': | |
90 | case ']': | |
91 | case '?': | |
92 | case '=': | |
93 | case '{': | |
94 | case '}': | |
95 | case ' ': | |
96 | case '\t': | |
97 | return 1; | |
98 | default: | |
99 | return 0; | |
100 | } | |
101 | } | |
102 | ||
103 | /** @brief Match CRLF */ | |
104 | static int iscrlf(const char *ptr) { | |
105 | return ptr[0] == '\r' && ptr[1] == '\n'; | |
106 | } | |
107 | ||
108 | /** @brief Skip whitespace | |
109 | * @param rfc822_comments If true, skip RFC822 nested comments | |
110 | */ | |
111 | static const char *skipwhite(const char *s, int rfc822_comments) { | |
460b9539 | 112 | int c, depth; |
113 | ||
114 | for(;;) { | |
115 | switch(c = *s) { | |
116 | case ' ': | |
117 | case '\t': | |
118 | case '\r': | |
119 | case '\n': | |
120 | ++s; | |
121 | break; | |
122 | case '(': | |
39d4aa6b RK |
123 | if(!rfc822_comments) |
124 | return s; | |
460b9539 | 125 | ++s; |
126 | depth = 1; | |
127 | while(*s && depth) { | |
128 | c = *s++; | |
129 | switch(c) { | |
130 | case '(': ++depth; break; | |
131 | case ')': --depth; break; | |
132 | case '\\': | |
133 | if(!*s) return 0; | |
134 | ++s; | |
135 | break; | |
136 | } | |
137 | } | |
138 | if(depth) return 0; | |
139 | break; | |
140 | default: | |
141 | return s; | |
142 | } | |
143 | } | |
144 | } | |
145 | ||
39d4aa6b RK |
146 | /** @brief Test for a word character |
147 | * @param c Character to test | |
148 | * @param special tspecial() (MIME/RFC2405) or http_separator() (HTTP/RFC2616) | |
149 | * @return 1 if @p c is a word character, else 0 | |
150 | */ | |
151 | static int iswordchar(int c, int (*special)(int)) { | |
152 | return !(c <= ' ' || c > '~' || special(c)); | |
153 | } | |
154 | ||
155 | /** @brief Parse an RFC1521/RFC2616 word | |
156 | * @param s Pointer to start of word | |
157 | * @param valuep Where to store value | |
158 | * @param special tspecial() (MIME/RFC2405) or http_separator() (HTTP/RFC2616) | |
159 | * @return Pointer just after end of word or NULL if there's no word | |
160 | * | |
161 | * A word is a token or a quoted-string. | |
162 | */ | |
163 | static const char *parseword(const char *s, char **valuep, | |
164 | int (*special)(int)) { | |
165 | struct dynstr value[1]; | |
460b9539 | 166 | int c; |
167 | ||
39d4aa6b RK |
168 | dynstr_init(value); |
169 | if(*s == '"') { | |
170 | ++s; | |
171 | while((c = *s++) != '"') { | |
172 | switch(c) { | |
173 | case '\\': | |
174 | if(!(c = *s++)) return 0; | |
175 | default: | |
176 | dynstr_append(value, c); | |
177 | break; | |
178 | } | |
460b9539 | 179 | } |
39d4aa6b RK |
180 | if(!c) return 0; |
181 | } else { | |
182 | if(!iswordchar((unsigned char)*s, special)) | |
183 | return NULL; | |
184 | dynstr_init(value); | |
185 | while(iswordchar((unsigned char)*s, special)) | |
186 | dynstr_append(value, *s++); | |
460b9539 | 187 | } |
39d4aa6b RK |
188 | dynstr_terminate(value); |
189 | *valuep = value->vec; | |
460b9539 | 190 | return s; |
191 | } | |
192 | ||
39d4aa6b RK |
193 | /** @brief Parse an RFC1521/RFC2616 token |
194 | * @param s Pointer to start of token | |
195 | * @param valuep Where to store value | |
196 | * @param special tspecial() (MIME/RFC2405) or http_separator() (HTTP/RFC2616) | |
197 | * @return Pointer just after end of token or NULL if there's no token | |
198 | */ | |
199 | static const char *parsetoken(const char *s, char **valuep, | |
200 | int (*special)(int)) { | |
201 | if(*s == '"') return 0; | |
202 | return parseword(s, valuep, special); | |
203 | } | |
204 | ||
205 | /** @brief Parse a MIME content-type field | |
206 | * @param s Start of field | |
207 | * @param typep Where to store type | |
208 | * @param parameternamep Where to store parameter name | |
209 | * @param parameternvaluep Wher to store parameter value | |
210 | * @return 0 on success, non-0 on error | |
211 | */ | |
460b9539 | 212 | int mime_content_type(const char *s, |
213 | char **typep, | |
214 | char **parameternamep, | |
215 | char **parametervaluep) { | |
39d4aa6b | 216 | struct dynstr type, parametername; |
460b9539 | 217 | |
218 | dynstr_init(&type); | |
39d4aa6b | 219 | if(!(s = skipwhite(s, 1))) return -1; |
460b9539 | 220 | if(!*s) return -1; |
221 | while(*s && !tspecial(*s) && !whitespace(*s)) | |
222 | dynstr_append(&type, tolower((unsigned char)*s++)); | |
39d4aa6b | 223 | if(!(s = skipwhite(s, 1))) return -1; |
460b9539 | 224 | if(*s++ != '/') return -1; |
225 | dynstr_append(&type, '/'); | |
39d4aa6b | 226 | if(!(s = skipwhite(s, 1))) return -1; |
460b9539 | 227 | while(*s && !tspecial(*s) && !whitespace(*s)) |
228 | dynstr_append(&type, tolower((unsigned char)*s++)); | |
39d4aa6b | 229 | if(!(s = skipwhite(s, 1))) return -1; |
460b9539 | 230 | |
231 | if(*s == ';') { | |
232 | dynstr_init(¶metername); | |
233 | ++s; | |
39d4aa6b | 234 | if(!(s = skipwhite(s, 1))) return -1; |
460b9539 | 235 | if(!*s) return -1; |
236 | while(*s && !tspecial(*s) && !whitespace(*s)) | |
237 | dynstr_append(¶metername, tolower((unsigned char)*s++)); | |
39d4aa6b | 238 | if(!(s = skipwhite(s, 1))) return -1; |
460b9539 | 239 | if(*s++ != '=') return -1; |
39d4aa6b RK |
240 | if(!(s = skipwhite(s, 1))) return -1; |
241 | if(!(s = parseword(s, parametervaluep, tspecial))) return -1; | |
242 | if(!(s = skipwhite(s, 1))) return -1; | |
460b9539 | 243 | dynstr_terminate(¶metername); |
244 | *parameternamep = parametername.vec; | |
245 | } else | |
246 | *parametervaluep = *parameternamep = 0; | |
247 | dynstr_terminate(&type); | |
248 | *typep = type.vec; | |
249 | return 0; | |
250 | } | |
251 | ||
39d4aa6b RK |
252 | /** @brief Parse a MIME message |
253 | * @param s Start of message | |
254 | * @param callback Called for each header field | |
255 | * @param u Passed to callback | |
256 | * @return Pointer to decoded body (might be in original string) | |
257 | */ | |
460b9539 | 258 | const char *mime_parse(const char *s, |
259 | int (*callback)(const char *name, const char *value, | |
260 | void *u), | |
261 | void *u) { | |
262 | struct dynstr name, value; | |
263 | char *cte = 0, *p; | |
264 | ||
265 | while(*s && !iscrlf(s)) { | |
266 | dynstr_init(&name); | |
267 | dynstr_init(&value); | |
268 | while(*s && !tspecial(*s) && !whitespace(*s)) | |
269 | dynstr_append(&name, tolower((unsigned char)*s++)); | |
39d4aa6b | 270 | if(!(s = skipwhite(s, 1))) return 0; |
460b9539 | 271 | if(*s != ':') return 0; |
272 | ++s; | |
273 | while(*s && !(*s == '\n' && !(s[1] == ' ' || s[1] == '\t'))) | |
274 | dynstr_append(&value, *s++); | |
275 | if(*s) ++s; | |
276 | dynstr_terminate(&name); | |
277 | dynstr_terminate(&value); | |
278 | if(!strcmp(name.vec, "content-transfer-encoding")) { | |
279 | cte = xstrdup(value.vec); | |
280 | for(p = cte; *p; p++) | |
281 | *p = tolower((unsigned char)*p); | |
282 | } | |
283 | if(callback(name.vec, value.vec, u)) return 0; | |
284 | } | |
285 | if(*s) s += 2; | |
286 | if(cte) { | |
8a7ccdfe | 287 | if(!strcmp(cte, "base64")) return mime_base64(s, 0); |
460b9539 | 288 | if(!strcmp(cte, "quoted-printable")) return mime_qp(s); |
289 | } | |
290 | return s; | |
291 | } | |
292 | ||
293 | static int isboundary(const char *ptr, const char *boundary, size_t bl) { | |
294 | return (ptr[0] == '-' | |
295 | && ptr[1] == '-' | |
296 | && !strncmp(ptr + 2, boundary, bl) | |
297 | && (iscrlf(ptr + bl + 2) | |
298 | || (ptr[bl + 2] == '-' | |
299 | && ptr[bl + 3] == '-' | |
22896b25 | 300 | && (iscrlf(ptr + bl + 4) || *(ptr + bl + 4) == 0)))); |
460b9539 | 301 | } |
302 | ||
303 | static int isfinal(const char *ptr, const char *boundary, size_t bl) { | |
304 | return (ptr[0] == '-' | |
305 | && ptr[1] == '-' | |
306 | && !strncmp(ptr + 2, boundary, bl) | |
307 | && ptr[bl + 2] == '-' | |
308 | && ptr[bl + 3] == '-' | |
22896b25 | 309 | && (iscrlf(ptr + bl + 4) || *(ptr + bl + 4) == 0)); |
460b9539 | 310 | } |
311 | ||
39d4aa6b RK |
312 | /** @brief Parse a multipart MIME body |
313 | * @param s Start of message | |
314 | * @param callback CAllback for each part | |
315 | * @param boundary Boundary string | |
316 | * @param u Passed to callback | |
317 | * @return 0 on success, non-0 on error | |
318 | */ | |
460b9539 | 319 | int mime_multipart(const char *s, |
320 | int (*callback)(const char *s, void *u), | |
321 | const char *boundary, | |
322 | void *u) { | |
323 | size_t bl = strlen(boundary); | |
324 | const char *start, *e; | |
325 | int ret; | |
326 | ||
22896b25 RK |
327 | /* We must start with a boundary string */ |
328 | if(!isboundary(s, boundary, bl)) | |
329 | return -1; | |
330 | /* Keep going until we hit a final boundary */ | |
460b9539 | 331 | while(!isfinal(s, boundary, bl)) { |
332 | s = strstr(s, "\r\n") + 2; | |
333 | start = s; | |
334 | while(!isboundary(s, boundary, bl)) { | |
22896b25 RK |
335 | if(!(e = strstr(s, "\r\n"))) |
336 | return -1; | |
460b9539 | 337 | s = e + 2; |
338 | } | |
339 | if((ret = callback(xstrndup(start, | |
340 | s == start ? 0 : s - start - 2), | |
341 | u))) | |
342 | return ret; | |
343 | } | |
344 | return 0; | |
345 | } | |
346 | ||
39d4aa6b RK |
347 | /** @brief Parse an RFC2388-style content-disposition field |
348 | * @param s Start of field | |
349 | * @param typep Where to store type | |
350 | * @param parameternamep Where to store parameter name | |
351 | * @param parameternvaluep Wher to store parameter value | |
352 | * @return 0 on success, non-0 on error | |
353 | */ | |
460b9539 | 354 | int mime_rfc2388_content_disposition(const char *s, |
355 | char **dispositionp, | |
356 | char **parameternamep, | |
357 | char **parametervaluep) { | |
39d4aa6b | 358 | struct dynstr disposition, parametername; |
460b9539 | 359 | |
360 | dynstr_init(&disposition); | |
39d4aa6b | 361 | if(!(s = skipwhite(s, 1))) return -1; |
460b9539 | 362 | if(!*s) return -1; |
363 | while(*s && !tspecial(*s) && !whitespace(*s)) | |
364 | dynstr_append(&disposition, tolower((unsigned char)*s++)); | |
39d4aa6b | 365 | if(!(s = skipwhite(s, 1))) return -1; |
460b9539 | 366 | |
367 | if(*s == ';') { | |
368 | dynstr_init(¶metername); | |
369 | ++s; | |
39d4aa6b | 370 | if(!(s = skipwhite(s, 1))) return -1; |
460b9539 | 371 | if(!*s) return -1; |
372 | while(*s && !tspecial(*s) && !whitespace(*s)) | |
373 | dynstr_append(¶metername, tolower((unsigned char)*s++)); | |
39d4aa6b | 374 | if(!(s = skipwhite(s, 1))) return -1; |
460b9539 | 375 | if(*s++ != '=') return -1; |
39d4aa6b RK |
376 | if(!(s = skipwhite(s, 1))) return -1; |
377 | if(!(s = parseword(s, parametervaluep, tspecial))) return -1; | |
378 | if(!(s = skipwhite(s, 1))) return -1; | |
460b9539 | 379 | dynstr_terminate(¶metername); |
380 | *parameternamep = parametername.vec; | |
381 | } else | |
382 | *parametervaluep = *parameternamep = 0; | |
383 | dynstr_terminate(&disposition); | |
384 | *dispositionp = disposition.vec; | |
385 | return 0; | |
386 | } | |
387 | ||
39d4aa6b RK |
388 | /** @brief Convert MIME quoted-printable |
389 | * @param s Quoted-printable data | |
390 | * @return Decoded data | |
391 | */ | |
460b9539 | 392 | char *mime_qp(const char *s) { |
393 | struct dynstr d; | |
394 | int c, a, b; | |
395 | const char *t; | |
396 | ||
397 | dynstr_init(&d); | |
398 | while((c = *s++)) { | |
399 | switch(c) { | |
400 | case '=': | |
401 | if((a = unhexdigitq(s[0])) != -1 | |
402 | && (b = unhexdigitq(s[1])) != -1) { | |
403 | dynstr_append(&d, a * 16 + b); | |
404 | s += 2; | |
405 | } else { | |
406 | t = s; | |
407 | while(*t == ' ' || *t == '\t') ++t; | |
408 | if(iscrlf(t)) { | |
409 | /* soft line break */ | |
410 | s = t + 2; | |
411 | } else | |
412 | return 0; | |
413 | } | |
414 | break; | |
415 | case ' ': | |
416 | case '\t': | |
417 | t = s; | |
418 | while(*t == ' ' || *t == '\t') ++t; | |
419 | if(iscrlf(t)) | |
420 | /* trailing space is always eliminated */ | |
421 | s = t; | |
422 | else | |
423 | dynstr_append(&d, c); | |
424 | break; | |
425 | default: | |
426 | dynstr_append(&d, c); | |
427 | break; | |
428 | } | |
429 | } | |
430 | dynstr_terminate(&d); | |
431 | return d.vec; | |
432 | } | |
433 | ||
8a7ccdfe RK |
434 | static const char mime_base64_table[] = |
435 | "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; | |
436 | ||
39d4aa6b RK |
437 | /** @brief Convert MIME base64 |
438 | * @param s base64 data | |
439 | * @return Decoded data | |
440 | */ | |
8a7ccdfe | 441 | char *mime_base64(const char *s, size_t *nsp) { |
460b9539 | 442 | struct dynstr d; |
443 | const char *t; | |
444 | int b[4], n, c; | |
460b9539 | 445 | |
446 | dynstr_init(&d); | |
447 | n = 0; | |
448 | while((c = (unsigned char)*s++)) { | |
8a7ccdfe RK |
449 | if((t = strchr(mime_base64_table, c))) { |
450 | b[n++] = t - mime_base64_table; | |
460b9539 | 451 | if(n == 4) { |
452 | dynstr_append(&d, (b[0] << 2) + (b[1] >> 4)); | |
453 | dynstr_append(&d, (b[1] << 4) + (b[2] >> 2)); | |
454 | dynstr_append(&d, (b[2] << 6) + b[3]); | |
455 | n = 0; | |
456 | } | |
457 | } else if(c == '=') { | |
458 | if(n >= 2) { | |
459 | dynstr_append(&d, (b[0] << 2) + (b[1] >> 4)); | |
460 | if(n == 3) | |
461 | dynstr_append(&d, (b[1] << 4) + (b[2] >> 2)); | |
462 | } | |
463 | break; | |
464 | } | |
465 | } | |
8a7ccdfe RK |
466 | if(nsp) |
467 | *nsp = d.nvec; | |
460b9539 | 468 | dynstr_terminate(&d); |
469 | return d.vec; | |
470 | } | |
471 | ||
8a7ccdfe RK |
472 | /** @brief Convert a binary string to base64 |
473 | * @param s Bytes to convert | |
474 | * @param ns Number of bytes to convert | |
475 | * @return Encoded data | |
476 | * | |
477 | * This function does not attempt to split up lines. | |
478 | */ | |
479 | char *mime_to_base64(const uint8_t *s, size_t ns) { | |
480 | struct dynstr d[1]; | |
481 | ||
482 | dynstr_init(d); | |
483 | while(ns >= 3) { | |
484 | /* Input bytes with output bits: AAAAAABB BBBBCCCC CCDDDDDD */ | |
485 | /* Output bytes with input bits: 000000 001111 111122 222222 */ | |
486 | dynstr_append(d, mime_base64_table[s[0] >> 2]); | |
487 | dynstr_append(d, mime_base64_table[((s[0] & 3) << 4) | |
488 | + (s[1] >> 4)]); | |
489 | dynstr_append(d, mime_base64_table[((s[1] & 15) << 2) | |
490 | + (s[2] >> 6)]); | |
491 | dynstr_append(d, mime_base64_table[s[2] & 63]); | |
492 | ns -= 3; | |
493 | s += 3; | |
494 | } | |
495 | if(ns > 0) { | |
496 | dynstr_append(d, mime_base64_table[s[0] >> 2]); | |
497 | switch(ns) { | |
498 | case 1: | |
499 | dynstr_append(d, mime_base64_table[(s[0] & 3) << 4]); | |
500 | dynstr_append(d, '='); | |
501 | dynstr_append(d, '='); | |
502 | break; | |
503 | case 2: | |
504 | dynstr_append(d, mime_base64_table[((s[0] & 3) << 4) | |
505 | + (s[1] >> 4)]); | |
506 | dynstr_append(d, mime_base64_table[(s[1] & 15) << 2]); | |
507 | dynstr_append(d, '='); | |
508 | break; | |
509 | } | |
510 | } | |
511 | dynstr_terminate(d); | |
512 | return d->vec; | |
513 | } | |
514 | ||
39d4aa6b RK |
515 | /** @brief Parse a RFC2109 Cookie: header |
516 | * @param s Header field value | |
517 | * @param cd Where to store result | |
518 | * @return 0 on success, non-0 on error | |
519 | */ | |
520 | int parse_cookie(const char *s, | |
521 | struct cookiedata *cd) { | |
522 | char *n = 0, *v = 0; | |
523 | ||
524 | memset(cd, 0, sizeof *cd); | |
525 | s = skipwhite(s, 0); | |
526 | while(*s) { | |
527 | /* Skip separators */ | |
528 | if(*s == ';' || *s == ',') { | |
529 | ++s; | |
530 | s = skipwhite(s, 0); | |
531 | continue; | |
532 | } | |
533 | if(!(s = parsetoken(s, &n, http_separator))) return -1; | |
534 | s = skipwhite(s, 0); | |
535 | if(*s++ != '=') return -1; | |
536 | s = skipwhite(s, 0); | |
537 | if(!(s = parseword(s, &v, http_separator))) return -1; | |
538 | if(n[0] == '$') { | |
539 | /* Some bit of meta-information */ | |
540 | if(!strcmp(n, "$Version")) | |
541 | cd->version = v; | |
542 | else if(!strcmp(n, "$Path")) { | |
543 | if(cd->ncookies > 0 && cd->cookies[cd->ncookies-1].path == 0) | |
544 | cd->cookies[cd->ncookies-1].path = v; | |
545 | else { | |
546 | error(0, "redundant $Path in Cookie: header"); | |
547 | return -1; | |
548 | } | |
549 | } else if(!strcmp(n, "$Domain")) { | |
550 | if(cd->ncookies > 0 && cd->cookies[cd->ncookies-1].domain == 0) | |
551 | cd->cookies[cd->ncookies-1].domain = v; | |
552 | else { | |
553 | error(0, "redundant $Domain in Cookie: header"); | |
554 | return -1; | |
555 | } | |
556 | } | |
557 | } else { | |
558 | /* It's a new cookie */ | |
559 | cd->cookies = xrealloc(cd->cookies, | |
560 | (cd->ncookies + 1) * sizeof (struct cookie)); | |
561 | cd->cookies[cd->ncookies].name = n; | |
562 | cd->cookies[cd->ncookies].value = v; | |
563 | cd->cookies[cd->ncookies].path = 0; | |
564 | cd->cookies[cd->ncookies].domain = 0; | |
565 | ++cd->ncookies; | |
566 | } | |
567 | s = skipwhite(s, 0); | |
568 | if(*s && (*s != ',' && *s != ';')) { | |
569 | error(0, "missing separator in Cookie: header"); | |
570 | return -1; | |
571 | } | |
572 | } | |
573 | return 0; | |
574 | } | |
575 | ||
576 | /** @brief Find a named cookie | |
577 | * @param cd Parse cookie data | |
578 | * @param name Name of cookie | |
579 | * @return Cookie structure or NULL if not found | |
580 | */ | |
581 | const struct cookie *find_cookie(const struct cookiedata *cd, | |
582 | const char *name) { | |
583 | int n; | |
584 | ||
585 | for(n = 0; n < cd->ncookies; ++n) | |
586 | if(!strcmp(cd->cookies[n].name, name)) | |
587 | return &cd->cookies[n]; | |
588 | return 0; | |
589 | } | |
590 | ||
460b9539 | 591 | /* |
592 | Local Variables: | |
593 | c-basic-offset:2 | |
594 | comment-column:40 | |
595 | fill-column:79 | |
596 | End: | |
597 | */ |