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460b9539 | 1 | /* |
2 | * This file is part of DisOrder. | |
e83d0967 | 3 | * Copyright (C) 2004, 2005, 2006, 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 | */ | |
20 | ||
21 | #include <config.h> | |
22 | #include "types.h" | |
23 | ||
24 | #include <stdio.h> | |
25 | #include <string.h> | |
26 | #include <stdlib.h> | |
27 | #include <errno.h> | |
28 | #include <sys/types.h> | |
29 | #include <sys/stat.h> | |
30 | #include <unistd.h> | |
31 | #include <ctype.h> | |
32 | #include <stddef.h> | |
33 | #include <pwd.h> | |
34 | #include <langinfo.h> | |
35 | #include <pcre.h> | |
36 | #include <signal.h> | |
37 | ||
38 | #include "configuration.h" | |
39 | #include "mem.h" | |
40 | #include "log.h" | |
41 | #include "split.h" | |
42 | #include "syscalls.h" | |
43 | #include "table.h" | |
44 | #include "inputline.h" | |
45 | #include "charset.h" | |
46 | #include "defs.h" | |
47 | #include "mixer.h" | |
48 | #include "printf.h" | |
49 | #include "regsub.h" | |
50 | #include "signame.h" | |
51 | ||
3f3bb97b RK |
52 | /** @brief Path to config file |
53 | * | |
54 | * set_configfile() sets the deafult if it is null. | |
55 | */ | |
460b9539 | 56 | char *configfile; |
57 | ||
3f3bb97b | 58 | /** @brief Config file parser state */ |
460b9539 | 59 | struct config_state { |
3f3bb97b | 60 | /** @brief Filename */ |
460b9539 | 61 | const char *path; |
3f3bb97b | 62 | /** @brief Line number */ |
460b9539 | 63 | int line; |
3f3bb97b | 64 | /** @brief Configuration object under construction */ |
460b9539 | 65 | struct config *config; |
66 | }; | |
67 | ||
3f3bb97b | 68 | /** @brief Current configuration */ |
460b9539 | 69 | struct config *config; |
70 | ||
3f3bb97b | 71 | /** @brief One configuration item */ |
460b9539 | 72 | struct conf { |
3f3bb97b | 73 | /** @brief Name as it appears in the config file */ |
460b9539 | 74 | const char *name; |
3f3bb97b | 75 | /** @brief Offset in @ref config structure */ |
460b9539 | 76 | size_t offset; |
3f3bb97b | 77 | /** @brief Pointer to item type */ |
460b9539 | 78 | const struct conftype *type; |
3f3bb97b | 79 | /** @brief Pointer to item-specific validation routine */ |
460b9539 | 80 | int (*validate)(const struct config_state *cs, |
81 | int nvec, char **vec); | |
82 | }; | |
83 | ||
3f3bb97b | 84 | /** @brief Type of a configuration item */ |
460b9539 | 85 | struct conftype { |
3f3bb97b | 86 | /** @brief Pointer to function to set item */ |
460b9539 | 87 | int (*set)(const struct config_state *cs, |
88 | const struct conf *whoami, | |
89 | int nvec, char **vec); | |
3f3bb97b | 90 | /** @brief Pointer to function to free item */ |
460b9539 | 91 | void (*free)(struct config *c, const struct conf *whoami); |
92 | }; | |
93 | ||
3f3bb97b | 94 | /** @brief Compute the address of an item */ |
460b9539 | 95 | #define ADDRESS(C, TYPE) ((TYPE *)((char *)(C) + whoami->offset)) |
3f3bb97b | 96 | /** @brief Return the value of an item */ |
460b9539 | 97 | #define VALUE(C, TYPE) (*ADDRESS(C, TYPE)) |
98 | ||
99 | static int set_signal(const struct config_state *cs, | |
100 | const struct conf *whoami, | |
101 | int nvec, char **vec) { | |
102 | int n; | |
103 | ||
104 | if(nvec != 1) { | |
105 | error(0, "%s:%d: '%s' requires one argument", | |
106 | cs->path, cs->line, whoami->name); | |
107 | return -1; | |
108 | } | |
109 | if((n = find_signal(vec[0])) == -1) { | |
110 | error(0, "%s:%d: unknown signal '%s'", | |
111 | cs->path, cs->line, vec[0]); | |
112 | return -1; | |
113 | } | |
114 | VALUE(cs->config, int) = n; | |
115 | return 0; | |
116 | } | |
117 | ||
118 | static int set_collections(const struct config_state *cs, | |
119 | const struct conf *whoami, | |
120 | int nvec, char **vec) { | |
121 | struct collectionlist *cl; | |
122 | ||
123 | if(nvec != 3) { | |
124 | error(0, "%s:%d: '%s' requires three arguments", | |
125 | cs->path, cs->line, whoami->name); | |
126 | return -1; | |
127 | } | |
128 | if(vec[2][0] != '/') { | |
129 | error(0, "%s:%d: collection root must start with '/'", | |
130 | cs->path, cs->line); | |
131 | return -1; | |
132 | } | |
133 | if(vec[2][1] && vec[2][strlen(vec[2])-1] == '/') { | |
134 | error(0, "%s:%d: collection root must not end with '/'", | |
135 | cs->path, cs->line); | |
136 | return -1; | |
137 | } | |
138 | cl = ADDRESS(cs->config, struct collectionlist); | |
139 | ++cl->n; | |
140 | cl->s = xrealloc(cl->s, cl->n * sizeof (struct collection)); | |
141 | cl->s[cl->n - 1].module = xstrdup(vec[0]); | |
142 | cl->s[cl->n - 1].encoding = xstrdup(vec[1]); | |
143 | cl->s[cl->n - 1].root = xstrdup(vec[2]); | |
144 | return 0; | |
145 | } | |
146 | ||
147 | static int set_boolean(const struct config_state *cs, | |
148 | const struct conf *whoami, | |
149 | int nvec, char **vec) { | |
150 | int state; | |
151 | ||
152 | if(nvec != 1) { | |
153 | error(0, "%s:%d: '%s' takes only one argument", | |
154 | cs->path, cs->line, whoami->name); | |
155 | return -1; | |
156 | } | |
157 | if(!strcmp(vec[0], "yes")) state = 1; | |
158 | else if(!strcmp(vec[0], "no")) state = 0; | |
159 | else { | |
160 | error(0, "%s:%d: argument to '%s' must be 'yes' or 'no'", | |
161 | cs->path, cs->line, whoami->name); | |
162 | return -1; | |
163 | } | |
164 | VALUE(cs->config, int) = state; | |
165 | return 0; | |
166 | } | |
167 | ||
168 | static int set_string(const struct config_state *cs, | |
169 | const struct conf *whoami, | |
170 | int nvec, char **vec) { | |
171 | if(nvec != 1) { | |
172 | error(0, "%s:%d: '%s' takes only one argument", | |
173 | cs->path, cs->line, whoami->name); | |
174 | return -1; | |
175 | } | |
176 | VALUE(cs->config, char *) = xstrdup(vec[0]); | |
177 | return 0; | |
178 | } | |
179 | ||
180 | static int set_stringlist(const struct config_state *cs, | |
181 | const struct conf *whoami, | |
182 | int nvec, char **vec) { | |
183 | int n; | |
184 | struct stringlist *sl; | |
185 | ||
186 | sl = ADDRESS(cs->config, struct stringlist); | |
187 | sl->n = 0; | |
188 | for(n = 0; n < nvec; ++n) { | |
189 | sl->n++; | |
190 | sl->s = xrealloc(sl->s, (sl->n * sizeof (char *))); | |
191 | sl->s[sl->n - 1] = xstrdup(vec[n]); | |
192 | } | |
193 | return 0; | |
194 | } | |
195 | ||
196 | static int set_integer(const struct config_state *cs, | |
197 | const struct conf *whoami, | |
198 | int nvec, char **vec) { | |
199 | char *e; | |
200 | ||
201 | if(nvec != 1) { | |
202 | error(0, "%s:%d: '%s' takes only one argument", | |
203 | cs->path, cs->line, whoami->name); | |
204 | return -1; | |
205 | } | |
206 | if(xstrtol(ADDRESS(cs->config, long), vec[0], &e, 0)) { | |
207 | error(errno, "%s:%d: converting integer", cs->path, cs->line); | |
208 | return -1; | |
209 | } | |
210 | if(*e) { | |
211 | error(0, "%s:%d: invalid integer syntax", cs->path, cs->line); | |
212 | return -1; | |
213 | } | |
214 | return 0; | |
215 | } | |
216 | ||
217 | static int set_stringlist_accum(const struct config_state *cs, | |
218 | const struct conf *whoami, | |
219 | int nvec, char **vec) { | |
220 | int n; | |
221 | struct stringlist *s; | |
222 | struct stringlistlist *sll; | |
223 | ||
224 | sll = ADDRESS(cs->config, struct stringlistlist); | |
225 | sll->n++; | |
226 | sll->s = xrealloc(sll->s, (sll->n * sizeof (struct stringlist))); | |
227 | s = &sll->s[sll->n - 1]; | |
228 | s->n = nvec; | |
229 | s->s = xmalloc((nvec + 1) * sizeof (char *)); | |
230 | for(n = 0; n < nvec; ++n) | |
231 | s->s[n] = xstrdup(vec[n]); | |
232 | return 0; | |
233 | } | |
234 | ||
235 | static int set_string_accum(const struct config_state *cs, | |
236 | const struct conf *whoami, | |
237 | int nvec, char **vec) { | |
238 | int n; | |
239 | struct stringlist *sl; | |
240 | ||
241 | sl = ADDRESS(cs->config, struct stringlist); | |
242 | for(n = 0; n < nvec; ++n) { | |
243 | sl->n++; | |
244 | sl->s = xrealloc(sl->s, (sl->n * sizeof (char *))); | |
245 | sl->s[sl->n - 1] = xstrdup(vec[n]); | |
246 | } | |
247 | return 0; | |
248 | } | |
249 | ||
250 | static int set_restrict(const struct config_state *cs, | |
251 | const struct conf *whoami, | |
252 | int nvec, char **vec) { | |
253 | unsigned r = 0; | |
254 | int n, i; | |
255 | ||
256 | static const struct restriction { | |
257 | const char *name; | |
258 | unsigned bit; | |
259 | } restrictions[] = { | |
260 | { "remove", RESTRICT_REMOVE }, | |
261 | { "scratch", RESTRICT_SCRATCH }, | |
262 | { "move", RESTRICT_MOVE }, | |
263 | }; | |
264 | ||
265 | for(n = 0; n < nvec; ++n) { | |
266 | if((i = TABLE_FIND(restrictions, struct restriction, name, vec[n])) < 0) { | |
267 | error(0, "%s:%d: invalid restriction '%s'", | |
268 | cs->path, cs->line, vec[n]); | |
269 | return -1; | |
270 | } | |
271 | r |= restrictions[i].bit; | |
272 | } | |
273 | VALUE(cs->config, unsigned) = r; | |
274 | return 0; | |
275 | } | |
276 | ||
9d5da576 | 277 | static int parse_sample_format(const struct config_state *cs, |
278 | ao_sample_format *ao, | |
279 | int nvec, char **vec) { | |
280 | char *p = vec[0]; | |
281 | long t; | |
282 | ||
283 | if (nvec != 1) { | |
284 | error(0, "%s:%d: wrong number of arguments", cs->path, cs->line); | |
285 | return -1; | |
286 | } | |
287 | if (xstrtol(&t, p, &p, 0)) { | |
288 | error(errno, "%s:%d: converting bits-per-sample", cs->path, cs->line); | |
289 | return -1; | |
290 | } | |
291 | if (t != 8 && t != 16) { | |
292 | error(0, "%s:%d: bad bite-per-sample (%ld)", cs->path, cs->line, t); | |
293 | return -1; | |
294 | } | |
295 | if (ao) ao->bits = t; | |
296 | switch (*p) { | |
297 | case 'l': case 'L': t = AO_FMT_LITTLE; p++; break; | |
298 | case 'b': case 'B': t = AO_FMT_BIG; p++; break; | |
299 | default: t = AO_FMT_NATIVE; break; | |
300 | } | |
301 | if (ao) ao->byte_format = t; | |
302 | if (*p != '/') { | |
303 | error(errno, "%s:%d: expected `/' after bits-per-sample", | |
304 | cs->path, cs->line); | |
305 | return -1; | |
306 | } | |
307 | p++; | |
308 | if (xstrtol(&t, p, &p, 0)) { | |
309 | error(errno, "%s:%d: converting sample-rate", cs->path, cs->line); | |
310 | return -1; | |
311 | } | |
312 | if (t < 1 || t > INT_MAX) { | |
313 | error(0, "%s:%d: silly sample-rate (%ld)", cs->path, cs->line, t); | |
314 | return -1; | |
315 | } | |
316 | if (ao) ao->rate = t; | |
317 | if (*p != '/') { | |
318 | error(0, "%s:%d: expected `/' after sample-rate", | |
319 | cs->path, cs->line); | |
320 | return -1; | |
321 | } | |
322 | p++; | |
323 | if (xstrtol(&t, p, &p, 0)) { | |
324 | error(errno, "%s:%d: converting channels", cs->path, cs->line); | |
325 | return -1; | |
326 | } | |
327 | if (t < 1 || t > 8) { | |
328 | error(0, "%s:%d: silly number (%ld) of channels", cs->path, cs->line, t); | |
329 | return -1; | |
330 | } | |
331 | if (ao) ao->channels = t; | |
332 | if (*p) { | |
333 | error(0, "%s:%d: junk after channels", cs->path, cs->line); | |
334 | return -1; | |
335 | } | |
336 | return 0; | |
337 | } | |
338 | ||
339 | static int set_sample_format(const struct config_state *cs, | |
340 | const struct conf *whoami, | |
341 | int nvec, char **vec) { | |
342 | return parse_sample_format(cs, ADDRESS(cs->config, ao_sample_format), | |
343 | nvec, vec); | |
344 | } | |
345 | ||
460b9539 | 346 | static int set_namepart(const struct config_state *cs, |
347 | const struct conf *whoami, | |
348 | int nvec, char **vec) { | |
349 | struct namepartlist *npl = ADDRESS(cs->config, struct namepartlist); | |
350 | unsigned reflags; | |
351 | const char *errstr; | |
352 | int erroffset, n; | |
353 | pcre *re; | |
354 | ||
355 | if(nvec < 3) { | |
356 | error(0, "%s:%d: namepart needs at least 3 arguments", cs->path, cs->line); | |
357 | return -1; | |
358 | } | |
359 | if(nvec > 5) { | |
360 | error(0, "%s:%d: namepart needs at most 5 arguments", cs->path, cs->line); | |
361 | return -1; | |
362 | } | |
363 | reflags = nvec >= 5 ? regsub_flags(vec[4]) : 0; | |
364 | if(!(re = pcre_compile(vec[1], | |
365 | PCRE_UTF8 | |
366 | |regsub_compile_options(reflags), | |
367 | &errstr, &erroffset, 0))) { | |
368 | error(0, "%s:%d: error compiling regexp /%s/: %s (offset %d)", | |
369 | cs->path, cs->line, vec[1], errstr, erroffset); | |
370 | return -1; | |
371 | } | |
372 | npl->s = xrealloc(npl->s, (npl->n + 1) * sizeof (struct namepart)); | |
373 | npl->s[npl->n].part = xstrdup(vec[0]); | |
374 | npl->s[npl->n].re = re; | |
375 | npl->s[npl->n].replace = xstrdup(vec[2]); | |
376 | npl->s[npl->n].context = xstrdup(vec[3]); | |
377 | npl->s[npl->n].reflags = reflags; | |
378 | ++npl->n; | |
379 | /* XXX a bit of a bodge; relies on there being very few parts. */ | |
380 | for(n = 0; (n < cs->config->nparts | |
381 | && strcmp(cs->config->parts[n], vec[0])); ++n) | |
382 | ; | |
383 | if(n >= cs->config->nparts) { | |
384 | cs->config->parts = xrealloc(cs->config->parts, | |
385 | (cs->config->nparts + 1) * sizeof (char *)); | |
386 | cs->config->parts[cs->config->nparts++] = xstrdup(vec[0]); | |
387 | } | |
388 | return 0; | |
389 | } | |
390 | ||
391 | static int set_transform(const struct config_state *cs, | |
392 | const struct conf *whoami, | |
393 | int nvec, char **vec) { | |
394 | struct transformlist *tl = ADDRESS(cs->config, struct transformlist); | |
395 | pcre *re; | |
396 | unsigned reflags; | |
397 | const char *errstr; | |
398 | int erroffset; | |
399 | ||
400 | if(nvec < 3) { | |
401 | error(0, "%s:%d: transform needs at least 3 arguments", cs->path, cs->line); | |
402 | return -1; | |
403 | } | |
404 | if(nvec > 5) { | |
405 | error(0, "%s:%d: transform needs at most 5 arguments", cs->path, cs->line); | |
406 | return -1; | |
407 | } | |
408 | reflags = (nvec >= 5 ? regsub_flags(vec[4]) : 0); | |
409 | if(!(re = pcre_compile(vec[1], | |
410 | PCRE_UTF8 | |
411 | |regsub_compile_options(reflags), | |
412 | &errstr, &erroffset, 0))) { | |
413 | error(0, "%s:%d: error compiling regexp /%s/: %s (offset %d)", | |
414 | cs->path, cs->line, vec[1], errstr, erroffset); | |
415 | return -1; | |
416 | } | |
417 | tl->t = xrealloc(tl->t, (tl->n + 1) * sizeof (struct namepart)); | |
418 | tl->t[tl->n].type = xstrdup(vec[0]); | |
419 | tl->t[tl->n].context = xstrdup(vec[3] ? vec[3] : "*"); | |
420 | tl->t[tl->n].re = re; | |
421 | tl->t[tl->n].replace = xstrdup(vec[2]); | |
422 | tl->t[tl->n].flags = reflags; | |
423 | ++tl->n; | |
424 | return 0; | |
425 | } | |
426 | ||
e83d0967 RK |
427 | static int set_backend(const struct config_state *cs, |
428 | const struct conf *whoami, | |
429 | int nvec, char **vec) { | |
430 | int *const valuep = ADDRESS(cs->config, int); | |
431 | ||
432 | if(nvec != 1) { | |
433 | error(0, "%s:%d: '%s' requires one argument", | |
434 | cs->path, cs->line, whoami->name); | |
435 | return -1; | |
436 | } | |
437 | if(!strcmp(vec[0], "alsa")) { | |
438 | #if API_ALSA | |
439 | *valuep = BACKEND_ALSA; | |
440 | #else | |
441 | error(0, "%s:%d: ALSA is not available on this platform", | |
442 | cs->path, cs->line); | |
443 | return -1; | |
444 | #endif | |
445 | } else if(!strcmp(vec[0], "command")) | |
446 | *valuep = BACKEND_COMMAND; | |
447 | else if(!strcmp(vec[0], "network")) | |
448 | *valuep = BACKEND_NETWORK; | |
449 | else { | |
450 | error(0, "%s:%d: invalid '%s' value '%s'", | |
451 | cs->path, cs->line, whoami->name, vec[0]); | |
452 | return -1; | |
453 | } | |
454 | return 0; | |
455 | } | |
456 | ||
460b9539 | 457 | /* free functions */ |
458 | ||
459 | static void free_none(struct config attribute((unused)) *c, | |
460 | const struct conf attribute((unused)) *whoami) { | |
461 | } | |
462 | ||
463 | static void free_string(struct config *c, | |
464 | const struct conf *whoami) { | |
465 | xfree(VALUE(c, char *)); | |
466 | } | |
467 | ||
468 | static void free_stringlist(struct config *c, | |
469 | const struct conf *whoami) { | |
470 | int n; | |
471 | struct stringlist *sl = ADDRESS(c, struct stringlist); | |
472 | ||
473 | for(n = 0; n < sl->n; ++n) | |
474 | xfree(sl->s[n]); | |
475 | xfree(sl->s); | |
476 | } | |
477 | ||
478 | static void free_stringlistlist(struct config *c, | |
479 | const struct conf *whoami) { | |
480 | int n, m; | |
481 | struct stringlistlist *sll = ADDRESS(c, struct stringlistlist); | |
482 | struct stringlist *sl; | |
483 | ||
484 | for(n = 0; n < sll->n; ++n) { | |
485 | sl = &sll->s[n]; | |
486 | for(m = 0; m < sl->n; ++m) | |
487 | xfree(sl->s[m]); | |
488 | xfree(sl->s); | |
489 | } | |
490 | xfree(sll->s); | |
491 | } | |
492 | ||
493 | static void free_collectionlist(struct config *c, | |
494 | const struct conf *whoami) { | |
495 | struct collectionlist *cll = ADDRESS(c, struct collectionlist); | |
496 | struct collection *cl; | |
497 | int n; | |
498 | ||
499 | for(n = 0; n < cll->n; ++n) { | |
500 | cl = &cll->s[n]; | |
501 | xfree(cl->module); | |
502 | xfree(cl->encoding); | |
503 | xfree(cl->root); | |
504 | } | |
505 | xfree(cll->s); | |
506 | } | |
507 | ||
508 | static void free_namepartlist(struct config *c, | |
509 | const struct conf *whoami) { | |
510 | struct namepartlist *npl = ADDRESS(c, struct namepartlist); | |
511 | struct namepart *np; | |
512 | int n; | |
513 | ||
514 | for(n = 0; n < npl->n; ++n) { | |
515 | np = &npl->s[n]; | |
516 | xfree(np->part); | |
517 | pcre_free(np->re); /* ...whatever pcre_free is set to. */ | |
518 | xfree(np->replace); | |
519 | xfree(np->context); | |
520 | } | |
521 | xfree(npl->s); | |
522 | } | |
523 | ||
524 | static void free_transformlist(struct config *c, | |
525 | const struct conf *whoami) { | |
526 | struct transformlist *tl = ADDRESS(c, struct transformlist); | |
527 | struct transform *t; | |
528 | int n; | |
529 | ||
530 | for(n = 0; n < tl->n; ++n) { | |
531 | t = &tl->t[n]; | |
532 | xfree(t->type); | |
533 | pcre_free(t->re); /* ...whatever pcre_free is set to. */ | |
534 | xfree(t->replace); | |
535 | xfree(t->context); | |
536 | } | |
537 | xfree(tl->t); | |
538 | } | |
539 | ||
540 | /* configuration types */ | |
541 | ||
542 | static const struct conftype | |
543 | type_signal = { set_signal, free_none }, | |
544 | type_collections = { set_collections, free_collectionlist }, | |
545 | type_boolean = { set_boolean, free_none }, | |
546 | type_string = { set_string, free_string }, | |
547 | type_stringlist = { set_stringlist, free_stringlist }, | |
548 | type_integer = { set_integer, free_none }, | |
549 | type_stringlist_accum = { set_stringlist_accum, free_stringlistlist }, | |
550 | type_string_accum = { set_string_accum, free_stringlist }, | |
9d5da576 | 551 | type_sample_format = { set_sample_format, free_none }, |
460b9539 | 552 | type_restrict = { set_restrict, free_none }, |
553 | type_namepart = { set_namepart, free_namepartlist }, | |
e83d0967 RK |
554 | type_transform = { set_transform, free_transformlist }, |
555 | type_backend = { set_backend, free_none }; | |
460b9539 | 556 | |
557 | /* specific validation routine */ | |
558 | ||
559 | #define VALIDATE_FILE(test, what) do { \ | |
560 | struct stat sb; \ | |
561 | int n; \ | |
562 | \ | |
563 | for(n = 0; n < nvec; ++n) { \ | |
564 | if(stat(vec[n], &sb) < 0) { \ | |
565 | error(errno, "%s:%d: %s", cs->path, cs->line, vec[n]); \ | |
566 | return -1; \ | |
567 | } \ | |
568 | if(!test(sb.st_mode)) { \ | |
569 | error(0, "%s:%d: %s is not a %s", \ | |
570 | cs->path, cs->line, vec[n], what); \ | |
571 | return -1; \ | |
572 | } \ | |
573 | } \ | |
574 | } while(0) | |
575 | ||
576 | static int validate_isdir(const struct config_state *cs, | |
577 | int nvec, char **vec) { | |
578 | VALIDATE_FILE(S_ISDIR, "directory"); | |
579 | return 0; | |
580 | } | |
581 | ||
582 | static int validate_isreg(const struct config_state *cs, | |
583 | int nvec, char **vec) { | |
584 | VALIDATE_FILE(S_ISREG, "regular file"); | |
585 | return 0; | |
586 | } | |
587 | ||
588 | static int validate_ischr(const struct config_state *cs, | |
589 | int nvec, char **vec) { | |
590 | VALIDATE_FILE(S_ISCHR, "character device"); | |
591 | return 0; | |
592 | } | |
593 | ||
594 | static int validate_player(const struct config_state *cs, | |
595 | int nvec, | |
596 | char attribute((unused)) **vec) { | |
597 | if(nvec < 2) { | |
598 | error(0, "%s:%d: should be at least 'player PATTERN MODULE'", | |
599 | cs->path, cs->line); | |
600 | return -1; | |
601 | } | |
602 | return 0; | |
603 | } | |
604 | ||
605 | static int validate_allow(const struct config_state *cs, | |
606 | int nvec, | |
607 | char attribute((unused)) **vec) { | |
608 | if(nvec != 2) { | |
609 | error(0, "%s:%d: must be 'allow NAME PASS'", cs->path, cs->line); | |
610 | return -1; | |
611 | } | |
612 | return 0; | |
613 | } | |
614 | ||
615 | static int validate_non_negative(const struct config_state *cs, | |
616 | int nvec, char **vec) { | |
617 | long n; | |
618 | ||
619 | if(nvec < 1) { | |
620 | error(0, "%s:%d: missing argument", cs->path, cs->line); | |
621 | return -1; | |
622 | } | |
623 | if(nvec > 1) { | |
624 | error(0, "%s:%d: too many arguments", cs->path, cs->line); | |
625 | return -1; | |
626 | } | |
627 | if(xstrtol(&n, vec[0], 0, 0)) { | |
628 | error(0, "%s:%d: %s", cs->path, cs->line, strerror(errno)); | |
629 | return -1; | |
630 | } | |
631 | if(n < 0) { | |
632 | error(0, "%s:%d: must not be negative", cs->path, cs->line); | |
633 | return -1; | |
634 | } | |
635 | return 0; | |
636 | } | |
637 | ||
638 | static int validate_positive(const struct config_state *cs, | |
639 | int nvec, char **vec) { | |
640 | long n; | |
641 | ||
642 | if(nvec < 1) { | |
643 | error(0, "%s:%d: missing argument", cs->path, cs->line); | |
644 | return -1; | |
645 | } | |
646 | if(nvec > 1) { | |
647 | error(0, "%s:%d: too many arguments", cs->path, cs->line); | |
648 | return -1; | |
649 | } | |
650 | if(xstrtol(&n, vec[0], 0, 0)) { | |
651 | error(0, "%s:%d: %s", cs->path, cs->line, strerror(errno)); | |
652 | return -1; | |
653 | } | |
654 | if(n <= 0) { | |
655 | error(0, "%s:%d: must be positive", cs->path, cs->line); | |
656 | return -1; | |
657 | } | |
658 | return 0; | |
659 | } | |
660 | ||
661 | static int validate_isauser(const struct config_state *cs, | |
662 | int attribute((unused)) nvec, | |
663 | char **vec) { | |
664 | struct passwd *pw; | |
665 | ||
666 | if(!(pw = getpwnam(vec[0]))) { | |
667 | error(0, "%s:%d: no such user as '%s'", cs->path, cs->line, vec[0]); | |
668 | return -1; | |
669 | } | |
670 | return 0; | |
671 | } | |
672 | ||
9d5da576 | 673 | static int validate_sample_format(const struct config_state *cs, |
674 | int attribute((unused)) nvec, | |
675 | char **vec) { | |
676 | return parse_sample_format(cs, 0, nvec, vec); | |
677 | } | |
678 | ||
460b9539 | 679 | static int validate_channel(const struct config_state *cs, |
680 | int attribute((unused)) nvec, | |
681 | char **vec) { | |
682 | if(mixer_channel(vec[0]) == -1) { | |
683 | error(0, "%s:%d: invalid channel '%s'", cs->path, cs->line, vec[0]); | |
684 | return -1; | |
685 | } | |
686 | return 0; | |
687 | } | |
688 | ||
689 | static int validate_any(const struct config_state attribute((unused)) *cs, | |
690 | int attribute((unused)) nvec, | |
691 | char attribute((unused)) **vec) { | |
692 | return 0; | |
693 | } | |
694 | ||
695 | static int validate_url(const struct config_state attribute((unused)) *cs, | |
696 | int attribute((unused)) nvec, | |
697 | char **vec) { | |
698 | const char *s; | |
699 | int n; | |
700 | /* absoluteURI = scheme ":" ( hier_part | opaque_part ) | |
701 | scheme = alpha *( alpha | digit | "+" | "-" | "." ) */ | |
702 | s = vec[0]; | |
703 | n = strspn(s, ("abcdefghijklmnopqrstuvwxyz" | |
704 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
705 | "0123456789")); | |
706 | if(s[n] != ':') { | |
707 | error(0, "%s:%d: invalid url '%s'", cs->path, cs->line, vec[0]); | |
708 | return -1; | |
709 | } | |
710 | if(!strncmp(s, "http:", 5) | |
711 | || !strncmp(s, "https:", 6)) { | |
712 | s += n + 1; | |
713 | /* we only do a rather cursory check */ | |
714 | if(strncmp(s, "//", 2)) { | |
715 | error(0, "%s:%d: invalid url '%s'", cs->path, cs->line, vec[0]); | |
716 | return -1; | |
717 | } | |
718 | } | |
719 | return 0; | |
720 | } | |
721 | ||
722 | static int validate_alias(const struct config_state *cs, | |
723 | int nvec, | |
724 | char **vec) { | |
725 | const char *s; | |
726 | int in_brackets = 0, c; | |
727 | ||
728 | if(nvec < 1) { | |
729 | error(0, "%s:%d: missing argument", cs->path, cs->line); | |
730 | return -1; | |
731 | } | |
732 | if(nvec > 1) { | |
733 | error(0, "%s:%d: too many arguments", cs->path, cs->line); | |
734 | return -1; | |
735 | } | |
736 | s = vec[0]; | |
737 | while((c = (unsigned char)*s++)) { | |
738 | if(in_brackets) { | |
739 | if(c == '}') | |
740 | in_brackets = 0; | |
741 | else if(!isalnum(c)) { | |
742 | error(0, "%s:%d: invalid part name in alias expansion in '%s'", | |
743 | cs->path, cs->line, vec[0]); | |
744 | return -1; | |
745 | } | |
746 | } else { | |
747 | if(c == '{') { | |
748 | in_brackets = 1; | |
749 | if(*s == '/') | |
750 | ++s; | |
751 | } else if(c == '\\') { | |
752 | if(!(c = (unsigned char)*s++)) { | |
753 | error(0, "%s:%d: unterminated escape in alias expansion in '%s'", | |
754 | cs->path, cs->line, vec[0]); | |
755 | return -1; | |
756 | } else if(c != '\\' && c != '{') { | |
757 | error(0, "%s:%d: invalid escape in alias expansion in '%s'", | |
758 | cs->path, cs->line, vec[0]); | |
759 | return -1; | |
760 | } | |
761 | } | |
762 | } | |
763 | ++s; | |
764 | } | |
765 | if(in_brackets) { | |
766 | error(0, "%s:%d: unterminated part name in alias expansion in '%s'", | |
767 | cs->path, cs->line, vec[0]); | |
768 | return -1; | |
769 | } | |
770 | return 0; | |
771 | } | |
772 | ||
e83d0967 RK |
773 | static int validate_addrport(const struct config_state attribute((unused)) *cs, |
774 | int nvec, | |
775 | char attribute((unused)) **vec) { | |
776 | switch(nvec) { | |
777 | case 0: | |
778 | error(0, "%s:%d: missing address", | |
779 | cs->path, cs->line); | |
780 | return -1; | |
781 | case 1: | |
782 | error(0, "%s:%d: missing port name/number", | |
783 | cs->path, cs->line); | |
784 | return -1; | |
785 | case 2: | |
786 | return 0; | |
787 | default: | |
788 | error(0, "%s:%d: expected ADDRESS PORT", | |
789 | cs->path, cs->line); | |
790 | return -1; | |
791 | } | |
792 | } | |
793 | ||
794 | static int validate_address(const struct config_state attribute((unused)) *cs, | |
795 | int nvec, | |
796 | char attribute((unused)) **vec) { | |
797 | switch(nvec) { | |
798 | case 0: | |
799 | error(0, "%s:%d: missing address", | |
800 | cs->path, cs->line); | |
801 | return -1; | |
802 | case 1: | |
803 | case 2: | |
804 | return 0; | |
805 | default: | |
806 | error(0, "%s:%d: expected ADDRESS PORT", | |
807 | cs->path, cs->line); | |
808 | return -1; | |
809 | } | |
810 | } | |
811 | ||
3f3bb97b | 812 | /** @brief Item name and and offset */ |
460b9539 | 813 | #define C(x) #x, offsetof(struct config, x) |
3f3bb97b | 814 | /** @brief Item name and and offset */ |
460b9539 | 815 | #define C2(x,y) #x, offsetof(struct config, y) |
816 | ||
3f3bb97b | 817 | /** @brief All configuration items */ |
460b9539 | 818 | static const struct conf conf[] = { |
819 | { C(alias), &type_string, validate_alias }, | |
820 | { C(allow), &type_stringlist_accum, validate_allow }, | |
e83d0967 RK |
821 | { C(broadcast), &type_stringlist, validate_addrport }, |
822 | { C(broadcast_from), &type_stringlist, validate_address }, | |
460b9539 | 823 | { C(channel), &type_string, validate_channel }, |
824 | { C(checkpoint_kbyte), &type_integer, validate_non_negative }, | |
825 | { C(checkpoint_min), &type_integer, validate_non_negative }, | |
826 | { C(collection), &type_collections, validate_any }, | |
e83d0967 | 827 | { C(connect), &type_stringlist, validate_addrport }, |
460b9539 | 828 | { C(device), &type_string, validate_any }, |
829 | { C(gap), &type_integer, validate_non_negative }, | |
830 | { C(history), &type_integer, validate_positive }, | |
831 | { C(home), &type_string, validate_isdir }, | |
e83d0967 | 832 | { C(listen), &type_stringlist, validate_addrport }, |
460b9539 | 833 | { C(lock), &type_boolean, validate_any }, |
834 | { C(mixer), &type_string, validate_ischr }, | |
835 | { C(namepart), &type_namepart, validate_any }, | |
836 | { C2(nice, nice_rescan), &type_integer, validate_non_negative }, | |
837 | { C(nice_rescan), &type_integer, validate_non_negative }, | |
838 | { C(nice_server), &type_integer, validate_any }, | |
839 | { C(nice_speaker), &type_integer, validate_any }, | |
840 | { C(password), &type_string, validate_any }, | |
841 | { C(player), &type_stringlist_accum, validate_player }, | |
842 | { C(plugins), &type_string_accum, validate_isdir }, | |
843 | { C(prefsync), &type_integer, validate_positive }, | |
459d4402 | 844 | { C(queue_pad), &type_integer, validate_positive }, |
460b9539 | 845 | { C(refresh), &type_integer, validate_positive }, |
846 | { C2(restrict, restrictions), &type_restrict, validate_any }, | |
9d5da576 | 847 | { C(sample_format), &type_sample_format, validate_sample_format }, |
460b9539 | 848 | { C(scratch), &type_string_accum, validate_isreg }, |
849 | { C(signal), &type_signal, validate_any }, | |
5330d674 | 850 | { C(sox_generation), &type_integer, validate_non_negative }, |
e83d0967 | 851 | { C(speaker_backend), &type_backend, validate_any }, |
9d5da576 | 852 | { C(speaker_command), &type_string, validate_any }, |
460b9539 | 853 | { C(stopword), &type_string_accum, validate_any }, |
854 | { C(templates), &type_string_accum, validate_isdir }, | |
855 | { C(transform), &type_transform, validate_any }, | |
856 | { C(trust), &type_string_accum, validate_any }, | |
857 | { C(url), &type_string, validate_url }, | |
858 | { C(user), &type_string, validate_isauser }, | |
859 | { C(username), &type_string, validate_any }, | |
860 | }; | |
861 | ||
3f3bb97b | 862 | /** @brief Find a configuration item's definition by key */ |
460b9539 | 863 | static const struct conf *find(const char *key) { |
864 | int n; | |
865 | ||
866 | if((n = TABLE_FIND(conf, struct conf, name, key)) < 0) | |
867 | return 0; | |
868 | return &conf[n]; | |
869 | } | |
870 | ||
3f3bb97b | 871 | /** @brief Set a new configuration value */ |
460b9539 | 872 | static int config_set(const struct config_state *cs, |
873 | int nvec, char **vec) { | |
874 | const struct conf *which; | |
875 | ||
876 | D(("config_set %s", vec[0])); | |
877 | if(!(which = find(vec[0]))) { | |
878 | error(0, "%s:%d: unknown configuration key '%s'", | |
879 | cs->path, cs->line, vec[0]); | |
880 | return -1; | |
881 | } | |
882 | return (which->validate(cs, nvec - 1, vec + 1) | |
883 | || which->type->set(cs, which, nvec - 1, vec + 1)); | |
884 | } | |
885 | ||
886 | static void config_error(const char *msg, void *u) { | |
887 | const struct config_state *cs = u; | |
888 | ||
889 | error(0, "%s:%d: %s", cs->path, cs->line, msg); | |
890 | } | |
891 | ||
3f3bb97b | 892 | /** @brief Include a file by name */ |
460b9539 | 893 | static int config_include(struct config *c, const char *path) { |
894 | FILE *fp; | |
895 | char *buffer, *inputbuffer, **vec; | |
896 | int n, ret = 0; | |
897 | struct config_state cs; | |
898 | ||
899 | cs.path = path; | |
900 | cs.line = 0; | |
901 | cs.config = c; | |
902 | D(("%s: reading configuration", path)); | |
903 | if(!(fp = fopen(path, "r"))) { | |
904 | error(errno, "error opening %s", path); | |
905 | return -1; | |
906 | } | |
907 | while(!inputline(path, fp, &inputbuffer, '\n')) { | |
908 | ++cs.line; | |
909 | if(!(buffer = mb2utf8(inputbuffer))) { | |
910 | error(errno, "%s:%d: cannot convert to UTF-8", cs.path, cs.line); | |
911 | ret = -1; | |
912 | xfree(inputbuffer); | |
913 | continue; | |
914 | } | |
915 | xfree(inputbuffer); | |
916 | if(!(vec = split(buffer, &n, SPLIT_COMMENTS|SPLIT_QUOTES, | |
917 | config_error, &cs))) { | |
918 | ret = -1; | |
919 | xfree(buffer); | |
920 | continue; | |
921 | } | |
922 | if(n) { | |
923 | if(!strcmp(vec[0], "include")) { | |
924 | if(n != 2) { | |
925 | error(0, "%s:%d: must be 'include PATH'", cs.path, cs.line); | |
926 | ret = -1; | |
927 | } else | |
928 | config_include(c, vec[1]); | |
929 | } else | |
930 | ret |= config_set(&cs, n, vec); | |
931 | } | |
932 | for(n = 0; vec[n]; ++n) xfree(vec[n]); | |
933 | xfree(vec); | |
934 | xfree(buffer); | |
935 | } | |
936 | if(ferror(fp)) { | |
937 | error(errno, "error reading %s", path); | |
938 | ret = -1; | |
939 | } | |
940 | fclose(fp); | |
941 | return ret; | |
942 | } | |
943 | ||
3f3bb97b | 944 | /** @brief Make a new default configuration */ |
460b9539 | 945 | static struct config *config_default(void) { |
946 | struct config *c = xmalloc(sizeof *c); | |
947 | const char *logname; | |
948 | struct passwd *pw; | |
949 | ||
950 | /* Strings had better be xstrdup'd as they will get freed at some point. */ | |
951 | c->gap = 2; | |
952 | c->history = 60; | |
953 | c->home = xstrdup(pkgstatedir); | |
954 | if(!(pw = getpwuid(getuid()))) | |
955 | fatal(0, "cannot determine our username"); | |
956 | logname = pw->pw_name; | |
957 | c->username = xstrdup(logname); | |
958 | c->refresh = 15; | |
959 | c->prefsync = 3600; | |
960 | c->signal = SIGKILL; | |
961 | c->alias = xstrdup("{/artist}{/album}{/title}{ext}"); | |
962 | c->lock = 1; | |
963 | c->device = xstrdup("default"); | |
964 | c->nice_rescan = 10; | |
9d5da576 | 965 | c->speaker_command = 0; |
966 | c->sample_format.bits = 16; | |
967 | c->sample_format.rate = 44100; | |
968 | c->sample_format.channels = 2; | |
969 | c->sample_format.byte_format = AO_FMT_NATIVE; | |
459d4402 | 970 | c->queue_pad = 10; |
e83d0967 | 971 | c->speaker_backend = -1; |
460b9539 | 972 | return c; |
973 | } | |
974 | ||
975 | static char *get_file(struct config *c, const char *name) { | |
976 | char *s; | |
977 | ||
978 | byte_xasprintf(&s, "%s/%s", c->home, name); | |
979 | return s; | |
980 | } | |
981 | ||
3f3bb97b | 982 | /** @brief Set the default configuration file */ |
460b9539 | 983 | static void set_configfile(void) { |
984 | if(!configfile) | |
985 | byte_xasprintf(&configfile, "%s/config", pkgconfdir); | |
986 | } | |
987 | ||
3f3bb97b | 988 | /** @brief Free a configuration object */ |
460b9539 | 989 | static void config_free(struct config *c) { |
990 | int n; | |
991 | ||
992 | if(c) { | |
993 | for(n = 0; n < (int)(sizeof conf / sizeof *conf); ++n) | |
994 | conf[n].type->free(c, &conf[n]); | |
995 | for(n = 0; n < c->nparts; ++n) | |
996 | xfree(c->parts[n]); | |
997 | xfree(c->parts); | |
998 | xfree(c); | |
999 | } | |
1000 | } | |
1001 | ||
3f3bb97b | 1002 | /** @brief Set post-parse defaults */ |
460b9539 | 1003 | static void config_postdefaults(struct config *c) { |
1004 | struct config_state cs; | |
1005 | const struct conf *whoami; | |
1006 | int n; | |
1007 | ||
1008 | static const char *namepart[][4] = { | |
1009 | { "title", "/([0-9]+:)?([^/]+)\\.[a-zA-Z0-9]+$", "$2", "display" }, | |
1010 | { "title", "/([^/]+)\\.[a-zA-Z0-9]+$", "$1", "sort" }, | |
1011 | { "album", "/([^/]+)/[^/]+$", "$1", "*" }, | |
1012 | { "artist", "/([^/]+)/[^/]+/[^/]+$", "$1", "*" }, | |
1013 | { "ext", "(\\.[a-zA-Z0-9]+)$", "$1", "*" }, | |
1014 | }; | |
1015 | #define NNAMEPART (int)(sizeof namepart / sizeof *namepart) | |
1016 | ||
1017 | static const char *transform[][5] = { | |
1018 | { "track", "^.*/([0-9]+:)?([^/]+)\\.[a-zA-Z0-9]+$", "$2", "display", "" }, | |
1019 | { "track", "^.*/([^/]+)\\.[a-zA-Z0-9]+$", "$1", "sort", "" }, | |
1020 | { "dir", "^.*/([^/]+)$", "$1", "*", "" }, | |
1021 | { "dir", "^(the) ([^/]*)", "$2, $1", "sort", "i", }, | |
1022 | { "dir", "[[:punct:]]", "", "sort", "g", } | |
1023 | }; | |
1024 | #define NTRANSFORM (int)(sizeof transform / sizeof *transform) | |
1025 | ||
1026 | cs.path = "<internal>"; | |
1027 | cs.line = 0; | |
1028 | cs.config = c; | |
1029 | if(!c->namepart.n) { | |
1030 | whoami = find("namepart"); | |
1031 | for(n = 0; n < NNAMEPART; ++n) | |
1032 | set_namepart(&cs, whoami, 4, (char **)namepart[n]); | |
1033 | } | |
1034 | if(!c->transform.n) { | |
1035 | whoami = find("transform"); | |
1036 | for(n = 0; n < NTRANSFORM; ++n) | |
1037 | set_transform(&cs, whoami, 5, (char **)transform[n]); | |
1038 | } | |
e83d0967 RK |
1039 | if(c->speaker_backend == -1) { |
1040 | if(c->speaker_command) | |
1041 | c->speaker_backend = BACKEND_COMMAND; | |
1042 | else if(c->broadcast.n) | |
1043 | c->speaker_backend = BACKEND_NETWORK; | |
1044 | else { | |
1045 | #if API_ALSA | |
1046 | c->speaker_backend = BACKEND_ALSA; | |
1047 | #else | |
1048 | c->speaker_backend = BACKEND_COMMAND; | |
1049 | #endif | |
1050 | } | |
1051 | } | |
1052 | if(c->speaker_backend == BACKEND_COMMAND && !c->speaker_command) | |
1053 | fatal(0, "speaker_backend is command but speaker_command is not set"); | |
1054 | if(c->speaker_backend == BACKEND_NETWORK && !c->broadcast.n) | |
1055 | fatal(0, "speaker_backend is network but broadcast is not set"); | |
460b9539 | 1056 | } |
1057 | ||
3f3bb97b | 1058 | /** @brief (Re-)read the config file */ |
460b9539 | 1059 | int config_read() { |
1060 | struct config *c; | |
1061 | char *privconf; | |
1062 | struct passwd *pw; | |
1063 | ||
1064 | set_configfile(); | |
1065 | c = config_default(); | |
1066 | if(config_include(c, configfile)) | |
1067 | return -1; | |
1068 | /* if we can read the private config file, do */ | |
1069 | if((privconf = config_private()) | |
1070 | && access(privconf, R_OK) == 0 | |
1071 | && config_include(c, privconf)) | |
1072 | return -1; | |
1073 | xfree(privconf); | |
1074 | /* if there's a per-user system config file for this user, read it */ | |
1075 | if(!(pw = getpwuid(getuid()))) | |
1076 | fatal(0, "cannot determine our username"); | |
1077 | if((privconf = config_usersysconf(pw)) | |
1078 | && access(privconf, F_OK) == 0 | |
1079 | && config_include(c, privconf)) | |
1080 | return -1; | |
1081 | xfree(privconf); | |
1082 | /* if we have a password file, read it */ | |
1083 | if((privconf = config_userconf(getenv("HOME"), pw)) | |
1084 | && access(privconf, F_OK) == 0 | |
1085 | && config_include(c, privconf)) | |
1086 | return -1; | |
1087 | xfree(privconf); | |
1088 | /* install default namepart and transform settings */ | |
1089 | config_postdefaults(c); | |
1090 | /* everything is good so we shall use the new config */ | |
1091 | config_free(config); | |
1092 | config = c; | |
1093 | return 0; | |
1094 | } | |
1095 | ||
3f3bb97b | 1096 | /** @brief Return the path to the private configuration file */ |
460b9539 | 1097 | char *config_private(void) { |
1098 | char *s; | |
1099 | ||
1100 | set_configfile(); | |
1101 | byte_xasprintf(&s, "%s.private", configfile); | |
1102 | return s; | |
1103 | } | |
1104 | ||
3f3bb97b | 1105 | /** @brief Return the path to user's personal configuration file */ |
460b9539 | 1106 | char *config_userconf(const char *home, const struct passwd *pw) { |
1107 | char *s; | |
1108 | ||
1109 | byte_xasprintf(&s, "%s/.disorder/passwd", home ? home : pw->pw_dir); | |
1110 | return s; | |
1111 | } | |
1112 | ||
3f3bb97b RK |
1113 | /** @brief Return the path to user-specific system configuration */ |
1114 | char *config_usersysconf(const struct passwd *pw) { | |
460b9539 | 1115 | char *s; |
1116 | ||
1117 | set_configfile(); | |
1118 | if(!strchr(pw->pw_name, '/')) { | |
1119 | byte_xasprintf(&s, "%s.%s", configfile, pw->pw_name); | |
1120 | return s; | |
1121 | } else | |
1122 | return 0; | |
1123 | } | |
1124 | ||
1125 | char *config_get_file(const char *name) { | |
1126 | return get_file(config, name); | |
1127 | } | |
1128 | ||
1129 | /* | |
1130 | Local Variables: | |
1131 | c-basic-offset:2 | |
1132 | comment-column:40 | |
1133 | fill-column:79 | |
1134 | End: | |
1135 | */ |