| 1 | /* |
| 2 | * This file is part of DisOrder. |
| 3 | * Copyright (C) 2004, 2005, 2006, 2007 Richard Kettlewell |
| 4 | * Portions copyright (C) 2007 Mark Wooding |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, but |
| 12 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
| 19 | * USA |
| 20 | */ |
| 21 | /** @file lib/configuration.c |
| 22 | * @brief Configuration file support |
| 23 | */ |
| 24 | |
| 25 | #include <config.h> |
| 26 | #include "types.h" |
| 27 | |
| 28 | #include <stdio.h> |
| 29 | #include <string.h> |
| 30 | #include <stdlib.h> |
| 31 | #include <errno.h> |
| 32 | #include <sys/types.h> |
| 33 | #include <sys/stat.h> |
| 34 | #include <unistd.h> |
| 35 | #include <ctype.h> |
| 36 | #include <stddef.h> |
| 37 | #include <pwd.h> |
| 38 | #include <langinfo.h> |
| 39 | #include <pcre.h> |
| 40 | #include <signal.h> |
| 41 | |
| 42 | #include "rights.h" |
| 43 | #include "configuration.h" |
| 44 | #include "mem.h" |
| 45 | #include "log.h" |
| 46 | #include "split.h" |
| 47 | #include "syscalls.h" |
| 48 | #include "table.h" |
| 49 | #include "inputline.h" |
| 50 | #include "charset.h" |
| 51 | #include "defs.h" |
| 52 | #include "mixer.h" |
| 53 | #include "printf.h" |
| 54 | #include "regsub.h" |
| 55 | #include "signame.h" |
| 56 | #include "authhash.h" |
| 57 | |
| 58 | /** @brief Path to config file |
| 59 | * |
| 60 | * set_configfile() sets the deafult if it is null. |
| 61 | */ |
| 62 | char *configfile; |
| 63 | |
| 64 | /** @brief Read user configuration |
| 65 | * |
| 66 | * If clear, the user-specific configuration is not read. |
| 67 | */ |
| 68 | int config_per_user = 1; |
| 69 | |
| 70 | /** @brief Config file parser state */ |
| 71 | struct config_state { |
| 72 | /** @brief Filename */ |
| 73 | const char *path; |
| 74 | /** @brief Line number */ |
| 75 | int line; |
| 76 | /** @brief Configuration object under construction */ |
| 77 | struct config *config; |
| 78 | }; |
| 79 | |
| 80 | /** @brief Current configuration */ |
| 81 | struct config *config; |
| 82 | |
| 83 | /** @brief One configuration item */ |
| 84 | struct conf { |
| 85 | /** @brief Name as it appears in the config file */ |
| 86 | const char *name; |
| 87 | /** @brief Offset in @ref config structure */ |
| 88 | size_t offset; |
| 89 | /** @brief Pointer to item type */ |
| 90 | const struct conftype *type; |
| 91 | /** @brief Pointer to item-specific validation routine */ |
| 92 | int (*validate)(const struct config_state *cs, |
| 93 | int nvec, char **vec); |
| 94 | }; |
| 95 | |
| 96 | /** @brief Type of a configuration item */ |
| 97 | struct conftype { |
| 98 | /** @brief Pointer to function to set item */ |
| 99 | int (*set)(const struct config_state *cs, |
| 100 | const struct conf *whoami, |
| 101 | int nvec, char **vec); |
| 102 | /** @brief Pointer to function to free item */ |
| 103 | void (*free)(struct config *c, const struct conf *whoami); |
| 104 | }; |
| 105 | |
| 106 | /** @brief Compute the address of an item */ |
| 107 | #define ADDRESS(C, TYPE) ((TYPE *)((char *)(C) + whoami->offset)) |
| 108 | /** @brief Return the value of an item */ |
| 109 | #define VALUE(C, TYPE) (*ADDRESS(C, TYPE)) |
| 110 | |
| 111 | static int set_signal(const struct config_state *cs, |
| 112 | const struct conf *whoami, |
| 113 | int nvec, char **vec) { |
| 114 | int n; |
| 115 | |
| 116 | if(nvec != 1) { |
| 117 | error(0, "%s:%d: '%s' requires one argument", |
| 118 | cs->path, cs->line, whoami->name); |
| 119 | return -1; |
| 120 | } |
| 121 | if((n = find_signal(vec[0])) == -1) { |
| 122 | error(0, "%s:%d: unknown signal '%s'", |
| 123 | cs->path, cs->line, vec[0]); |
| 124 | return -1; |
| 125 | } |
| 126 | VALUE(cs->config, int) = n; |
| 127 | return 0; |
| 128 | } |
| 129 | |
| 130 | static int set_collections(const struct config_state *cs, |
| 131 | const struct conf *whoami, |
| 132 | int nvec, char **vec) { |
| 133 | struct collectionlist *cl; |
| 134 | |
| 135 | if(nvec != 3) { |
| 136 | error(0, "%s:%d: '%s' requires three arguments", |
| 137 | cs->path, cs->line, whoami->name); |
| 138 | return -1; |
| 139 | } |
| 140 | if(vec[2][0] != '/') { |
| 141 | error(0, "%s:%d: collection root must start with '/'", |
| 142 | cs->path, cs->line); |
| 143 | return -1; |
| 144 | } |
| 145 | if(vec[2][1] && vec[2][strlen(vec[2])-1] == '/') { |
| 146 | error(0, "%s:%d: collection root must not end with '/'", |
| 147 | cs->path, cs->line); |
| 148 | return -1; |
| 149 | } |
| 150 | cl = ADDRESS(cs->config, struct collectionlist); |
| 151 | ++cl->n; |
| 152 | cl->s = xrealloc(cl->s, cl->n * sizeof (struct collection)); |
| 153 | cl->s[cl->n - 1].module = xstrdup(vec[0]); |
| 154 | cl->s[cl->n - 1].encoding = xstrdup(vec[1]); |
| 155 | cl->s[cl->n - 1].root = xstrdup(vec[2]); |
| 156 | return 0; |
| 157 | } |
| 158 | |
| 159 | static int set_boolean(const struct config_state *cs, |
| 160 | const struct conf *whoami, |
| 161 | int nvec, char **vec) { |
| 162 | int state; |
| 163 | |
| 164 | if(nvec != 1) { |
| 165 | error(0, "%s:%d: '%s' takes only one argument", |
| 166 | cs->path, cs->line, whoami->name); |
| 167 | return -1; |
| 168 | } |
| 169 | if(!strcmp(vec[0], "yes")) state = 1; |
| 170 | else if(!strcmp(vec[0], "no")) state = 0; |
| 171 | else { |
| 172 | error(0, "%s:%d: argument to '%s' must be 'yes' or 'no'", |
| 173 | cs->path, cs->line, whoami->name); |
| 174 | return -1; |
| 175 | } |
| 176 | VALUE(cs->config, int) = state; |
| 177 | return 0; |
| 178 | } |
| 179 | |
| 180 | static int set_string(const struct config_state *cs, |
| 181 | const struct conf *whoami, |
| 182 | int nvec, char **vec) { |
| 183 | if(nvec != 1) { |
| 184 | error(0, "%s:%d: '%s' takes only one argument", |
| 185 | cs->path, cs->line, whoami->name); |
| 186 | return -1; |
| 187 | } |
| 188 | VALUE(cs->config, char *) = xstrdup(vec[0]); |
| 189 | return 0; |
| 190 | } |
| 191 | |
| 192 | static int set_stringlist(const struct config_state *cs, |
| 193 | const struct conf *whoami, |
| 194 | int nvec, char **vec) { |
| 195 | int n; |
| 196 | struct stringlist *sl; |
| 197 | |
| 198 | sl = ADDRESS(cs->config, struct stringlist); |
| 199 | sl->n = 0; |
| 200 | for(n = 0; n < nvec; ++n) { |
| 201 | sl->n++; |
| 202 | sl->s = xrealloc(sl->s, (sl->n * sizeof (char *))); |
| 203 | sl->s[sl->n - 1] = xstrdup(vec[n]); |
| 204 | } |
| 205 | return 0; |
| 206 | } |
| 207 | |
| 208 | static int set_integer(const struct config_state *cs, |
| 209 | const struct conf *whoami, |
| 210 | int nvec, char **vec) { |
| 211 | char *e; |
| 212 | |
| 213 | if(nvec != 1) { |
| 214 | error(0, "%s:%d: '%s' takes only one argument", |
| 215 | cs->path, cs->line, whoami->name); |
| 216 | return -1; |
| 217 | } |
| 218 | if(xstrtol(ADDRESS(cs->config, long), vec[0], &e, 0)) { |
| 219 | error(errno, "%s:%d: converting integer", cs->path, cs->line); |
| 220 | return -1; |
| 221 | } |
| 222 | if(*e) { |
| 223 | error(0, "%s:%d: invalid integer syntax", cs->path, cs->line); |
| 224 | return -1; |
| 225 | } |
| 226 | return 0; |
| 227 | } |
| 228 | |
| 229 | static int set_stringlist_accum(const struct config_state *cs, |
| 230 | const struct conf *whoami, |
| 231 | int nvec, char **vec) { |
| 232 | int n; |
| 233 | struct stringlist *s; |
| 234 | struct stringlistlist *sll; |
| 235 | |
| 236 | sll = ADDRESS(cs->config, struct stringlistlist); |
| 237 | if(nvec == 0) { |
| 238 | sll->n = 0; |
| 239 | return 0; |
| 240 | } |
| 241 | sll->n++; |
| 242 | sll->s = xrealloc(sll->s, (sll->n * sizeof (struct stringlist))); |
| 243 | s = &sll->s[sll->n - 1]; |
| 244 | s->n = nvec; |
| 245 | s->s = xmalloc((nvec + 1) * sizeof (char *)); |
| 246 | for(n = 0; n < nvec; ++n) |
| 247 | s->s[n] = xstrdup(vec[n]); |
| 248 | return 0; |
| 249 | } |
| 250 | |
| 251 | static int set_string_accum(const struct config_state *cs, |
| 252 | const struct conf *whoami, |
| 253 | int nvec, char **vec) { |
| 254 | int n; |
| 255 | struct stringlist *sl; |
| 256 | |
| 257 | sl = ADDRESS(cs->config, struct stringlist); |
| 258 | if(nvec == 0) { |
| 259 | sl->n = 0; |
| 260 | return 0; |
| 261 | } |
| 262 | for(n = 0; n < nvec; ++n) { |
| 263 | sl->n++; |
| 264 | sl->s = xrealloc(sl->s, (sl->n * sizeof (char *))); |
| 265 | sl->s[sl->n - 1] = xstrdup(vec[n]); |
| 266 | } |
| 267 | return 0; |
| 268 | } |
| 269 | |
| 270 | static int set_restrict(const struct config_state *cs, |
| 271 | const struct conf *whoami, |
| 272 | int nvec, char **vec) { |
| 273 | unsigned r = 0; |
| 274 | int n, i; |
| 275 | |
| 276 | static const struct restriction { |
| 277 | const char *name; |
| 278 | unsigned bit; |
| 279 | } restrictions[] = { |
| 280 | { "remove", RESTRICT_REMOVE }, |
| 281 | { "scratch", RESTRICT_SCRATCH }, |
| 282 | { "move", RESTRICT_MOVE }, |
| 283 | }; |
| 284 | |
| 285 | for(n = 0; n < nvec; ++n) { |
| 286 | if((i = TABLE_FIND(restrictions, struct restriction, name, vec[n])) < 0) { |
| 287 | error(0, "%s:%d: invalid restriction '%s'", |
| 288 | cs->path, cs->line, vec[n]); |
| 289 | return -1; |
| 290 | } |
| 291 | r |= restrictions[i].bit; |
| 292 | } |
| 293 | VALUE(cs->config, unsigned) = r; |
| 294 | return 0; |
| 295 | } |
| 296 | |
| 297 | static int parse_sample_format(const struct config_state *cs, |
| 298 | struct stream_header *format, |
| 299 | int nvec, char **vec) { |
| 300 | char *p = vec[0]; |
| 301 | long t; |
| 302 | |
| 303 | if(nvec != 1) { |
| 304 | error(0, "%s:%d: wrong number of arguments", cs->path, cs->line); |
| 305 | return -1; |
| 306 | } |
| 307 | if(xstrtol(&t, p, &p, 0)) { |
| 308 | error(errno, "%s:%d: converting bits-per-sample", cs->path, cs->line); |
| 309 | return -1; |
| 310 | } |
| 311 | if(t != 8 && t != 16) { |
| 312 | error(0, "%s:%d: bad bite-per-sample (%ld)", cs->path, cs->line, t); |
| 313 | return -1; |
| 314 | } |
| 315 | if(format) format->bits = t; |
| 316 | switch (*p) { |
| 317 | case 'l': case 'L': t = ENDIAN_LITTLE; p++; break; |
| 318 | case 'b': case 'B': t = ENDIAN_BIG; p++; break; |
| 319 | default: t = ENDIAN_NATIVE; break; |
| 320 | } |
| 321 | if(format) format->endian = t; |
| 322 | if(*p != '/') { |
| 323 | error(errno, "%s:%d: expected `/' after bits-per-sample", |
| 324 | cs->path, cs->line); |
| 325 | return -1; |
| 326 | } |
| 327 | p++; |
| 328 | if(xstrtol(&t, p, &p, 0)) { |
| 329 | error(errno, "%s:%d: converting sample-rate", cs->path, cs->line); |
| 330 | return -1; |
| 331 | } |
| 332 | if(t < 1 || t > INT_MAX) { |
| 333 | error(0, "%s:%d: silly sample-rate (%ld)", cs->path, cs->line, t); |
| 334 | return -1; |
| 335 | } |
| 336 | if(format) format->rate = t; |
| 337 | if(*p != '/') { |
| 338 | error(0, "%s:%d: expected `/' after sample-rate", |
| 339 | cs->path, cs->line); |
| 340 | return -1; |
| 341 | } |
| 342 | p++; |
| 343 | if(xstrtol(&t, p, &p, 0)) { |
| 344 | error(errno, "%s:%d: converting channels", cs->path, cs->line); |
| 345 | return -1; |
| 346 | } |
| 347 | if(t < 1 || t > 8) { |
| 348 | error(0, "%s:%d: silly number (%ld) of channels", cs->path, cs->line, t); |
| 349 | return -1; |
| 350 | } |
| 351 | if(format) format->channels = t; |
| 352 | if(*p) { |
| 353 | error(0, "%s:%d: junk after channels", cs->path, cs->line); |
| 354 | return -1; |
| 355 | } |
| 356 | return 0; |
| 357 | } |
| 358 | |
| 359 | static int set_sample_format(const struct config_state *cs, |
| 360 | const struct conf *whoami, |
| 361 | int nvec, char **vec) { |
| 362 | return parse_sample_format(cs, ADDRESS(cs->config, struct stream_header), |
| 363 | nvec, vec); |
| 364 | } |
| 365 | |
| 366 | static int set_namepart(const struct config_state *cs, |
| 367 | const struct conf *whoami, |
| 368 | int nvec, char **vec) { |
| 369 | struct namepartlist *npl = ADDRESS(cs->config, struct namepartlist); |
| 370 | unsigned reflags; |
| 371 | const char *errstr; |
| 372 | int erroffset, n; |
| 373 | pcre *re; |
| 374 | |
| 375 | if(nvec < 3) { |
| 376 | error(0, "%s:%d: namepart needs at least 3 arguments", cs->path, cs->line); |
| 377 | return -1; |
| 378 | } |
| 379 | if(nvec > 5) { |
| 380 | error(0, "%s:%d: namepart needs at most 5 arguments", cs->path, cs->line); |
| 381 | return -1; |
| 382 | } |
| 383 | reflags = nvec >= 5 ? regsub_flags(vec[4]) : 0; |
| 384 | if(!(re = pcre_compile(vec[1], |
| 385 | PCRE_UTF8 |
| 386 | |regsub_compile_options(reflags), |
| 387 | &errstr, &erroffset, 0))) { |
| 388 | error(0, "%s:%d: error compiling regexp /%s/: %s (offset %d)", |
| 389 | cs->path, cs->line, vec[1], errstr, erroffset); |
| 390 | return -1; |
| 391 | } |
| 392 | npl->s = xrealloc(npl->s, (npl->n + 1) * sizeof (struct namepart)); |
| 393 | npl->s[npl->n].part = xstrdup(vec[0]); |
| 394 | npl->s[npl->n].re = re; |
| 395 | npl->s[npl->n].replace = xstrdup(vec[2]); |
| 396 | npl->s[npl->n].context = xstrdup(vec[3]); |
| 397 | npl->s[npl->n].reflags = reflags; |
| 398 | ++npl->n; |
| 399 | /* XXX a bit of a bodge; relies on there being very few parts. */ |
| 400 | for(n = 0; (n < cs->config->nparts |
| 401 | && strcmp(cs->config->parts[n], vec[0])); ++n) |
| 402 | ; |
| 403 | if(n >= cs->config->nparts) { |
| 404 | cs->config->parts = xrealloc(cs->config->parts, |
| 405 | (cs->config->nparts + 1) * sizeof (char *)); |
| 406 | cs->config->parts[cs->config->nparts++] = xstrdup(vec[0]); |
| 407 | } |
| 408 | return 0; |
| 409 | } |
| 410 | |
| 411 | static int set_transform(const struct config_state *cs, |
| 412 | const struct conf *whoami, |
| 413 | int nvec, char **vec) { |
| 414 | struct transformlist *tl = ADDRESS(cs->config, struct transformlist); |
| 415 | pcre *re; |
| 416 | unsigned reflags; |
| 417 | const char *errstr; |
| 418 | int erroffset; |
| 419 | |
| 420 | if(nvec < 3) { |
| 421 | error(0, "%s:%d: transform needs at least 3 arguments", cs->path, cs->line); |
| 422 | return -1; |
| 423 | } |
| 424 | if(nvec > 5) { |
| 425 | error(0, "%s:%d: transform needs at most 5 arguments", cs->path, cs->line); |
| 426 | return -1; |
| 427 | } |
| 428 | reflags = (nvec >= 5 ? regsub_flags(vec[4]) : 0); |
| 429 | if(!(re = pcre_compile(vec[1], |
| 430 | PCRE_UTF8 |
| 431 | |regsub_compile_options(reflags), |
| 432 | &errstr, &erroffset, 0))) { |
| 433 | error(0, "%s:%d: error compiling regexp /%s/: %s (offset %d)", |
| 434 | cs->path, cs->line, vec[1], errstr, erroffset); |
| 435 | return -1; |
| 436 | } |
| 437 | tl->t = xrealloc(tl->t, (tl->n + 1) * sizeof (struct namepart)); |
| 438 | tl->t[tl->n].type = xstrdup(vec[0]); |
| 439 | tl->t[tl->n].context = xstrdup(vec[3] ? vec[3] : "*"); |
| 440 | tl->t[tl->n].re = re; |
| 441 | tl->t[tl->n].replace = xstrdup(vec[2]); |
| 442 | tl->t[tl->n].flags = reflags; |
| 443 | ++tl->n; |
| 444 | return 0; |
| 445 | } |
| 446 | |
| 447 | static int set_backend(const struct config_state *cs, |
| 448 | const struct conf *whoami, |
| 449 | int nvec, char **vec) { |
| 450 | int *const valuep = ADDRESS(cs->config, int); |
| 451 | |
| 452 | if(nvec != 1) { |
| 453 | error(0, "%s:%d: '%s' requires one argument", |
| 454 | cs->path, cs->line, whoami->name); |
| 455 | return -1; |
| 456 | } |
| 457 | if(!strcmp(vec[0], "alsa")) { |
| 458 | #if HAVE_ALSA_ASOUNDLIB_H |
| 459 | *valuep = BACKEND_ALSA; |
| 460 | #else |
| 461 | error(0, "%s:%d: ALSA is not available on this platform", |
| 462 | cs->path, cs->line); |
| 463 | return -1; |
| 464 | #endif |
| 465 | } else if(!strcmp(vec[0], "command")) |
| 466 | *valuep = BACKEND_COMMAND; |
| 467 | else if(!strcmp(vec[0], "network")) |
| 468 | *valuep = BACKEND_NETWORK; |
| 469 | else if(!strcmp(vec[0], "coreaudio")) { |
| 470 | #if HAVE_COREAUDIO_AUDIOHARDWARE_H |
| 471 | *valuep = BACKEND_COREAUDIO; |
| 472 | #else |
| 473 | error(0, "%s:%d: Core Audio is not available on this platform", |
| 474 | cs->path, cs->line); |
| 475 | return -1; |
| 476 | #endif |
| 477 | } else if(!strcmp(vec[0], "oss")) { |
| 478 | #if HAVE_SYS_SOUNDCARD_H |
| 479 | *valuep = BACKEND_OSS; |
| 480 | #else |
| 481 | error(0, "%s:%d: OSS is not available on this platform", |
| 482 | cs->path, cs->line); |
| 483 | return -1; |
| 484 | #endif |
| 485 | } else { |
| 486 | error(0, "%s:%d: invalid '%s' value '%s'", |
| 487 | cs->path, cs->line, whoami->name, vec[0]); |
| 488 | return -1; |
| 489 | } |
| 490 | return 0; |
| 491 | } |
| 492 | |
| 493 | static int set_rights(const struct config_state *cs, |
| 494 | const struct conf *whoami, |
| 495 | int nvec, char **vec) { |
| 496 | if(nvec != 1) { |
| 497 | error(0, "%s:%d: '%s' requires one argument", |
| 498 | cs->path, cs->line, whoami->name); |
| 499 | return -1; |
| 500 | } |
| 501 | if(parse_rights(vec[0], 0, 1)) { |
| 502 | error(0, "%s:%d: invalid rights string '%s'", |
| 503 | cs->path, cs->line, vec[0]); |
| 504 | return -1; |
| 505 | } |
| 506 | *ADDRESS(cs->config, char *) = vec[0]; |
| 507 | return 0; |
| 508 | } |
| 509 | |
| 510 | /* free functions */ |
| 511 | |
| 512 | static void free_none(struct config attribute((unused)) *c, |
| 513 | const struct conf attribute((unused)) *whoami) { |
| 514 | } |
| 515 | |
| 516 | static void free_string(struct config *c, |
| 517 | const struct conf *whoami) { |
| 518 | xfree(VALUE(c, char *)); |
| 519 | } |
| 520 | |
| 521 | static void free_stringlist(struct config *c, |
| 522 | const struct conf *whoami) { |
| 523 | int n; |
| 524 | struct stringlist *sl = ADDRESS(c, struct stringlist); |
| 525 | |
| 526 | for(n = 0; n < sl->n; ++n) |
| 527 | xfree(sl->s[n]); |
| 528 | xfree(sl->s); |
| 529 | } |
| 530 | |
| 531 | static void free_stringlistlist(struct config *c, |
| 532 | const struct conf *whoami) { |
| 533 | int n, m; |
| 534 | struct stringlistlist *sll = ADDRESS(c, struct stringlistlist); |
| 535 | struct stringlist *sl; |
| 536 | |
| 537 | for(n = 0; n < sll->n; ++n) { |
| 538 | sl = &sll->s[n]; |
| 539 | for(m = 0; m < sl->n; ++m) |
| 540 | xfree(sl->s[m]); |
| 541 | xfree(sl->s); |
| 542 | } |
| 543 | xfree(sll->s); |
| 544 | } |
| 545 | |
| 546 | static void free_collectionlist(struct config *c, |
| 547 | const struct conf *whoami) { |
| 548 | struct collectionlist *cll = ADDRESS(c, struct collectionlist); |
| 549 | struct collection *cl; |
| 550 | int n; |
| 551 | |
| 552 | for(n = 0; n < cll->n; ++n) { |
| 553 | cl = &cll->s[n]; |
| 554 | xfree(cl->module); |
| 555 | xfree(cl->encoding); |
| 556 | xfree(cl->root); |
| 557 | } |
| 558 | xfree(cll->s); |
| 559 | } |
| 560 | |
| 561 | static void free_namepartlist(struct config *c, |
| 562 | const struct conf *whoami) { |
| 563 | struct namepartlist *npl = ADDRESS(c, struct namepartlist); |
| 564 | struct namepart *np; |
| 565 | int n; |
| 566 | |
| 567 | for(n = 0; n < npl->n; ++n) { |
| 568 | np = &npl->s[n]; |
| 569 | xfree(np->part); |
| 570 | pcre_free(np->re); /* ...whatever pcre_free is set to. */ |
| 571 | xfree(np->replace); |
| 572 | xfree(np->context); |
| 573 | } |
| 574 | xfree(npl->s); |
| 575 | } |
| 576 | |
| 577 | static void free_transformlist(struct config *c, |
| 578 | const struct conf *whoami) { |
| 579 | struct transformlist *tl = ADDRESS(c, struct transformlist); |
| 580 | struct transform *t; |
| 581 | int n; |
| 582 | |
| 583 | for(n = 0; n < tl->n; ++n) { |
| 584 | t = &tl->t[n]; |
| 585 | xfree(t->type); |
| 586 | pcre_free(t->re); /* ...whatever pcre_free is set to. */ |
| 587 | xfree(t->replace); |
| 588 | xfree(t->context); |
| 589 | } |
| 590 | xfree(tl->t); |
| 591 | } |
| 592 | |
| 593 | /* configuration types */ |
| 594 | |
| 595 | static const struct conftype |
| 596 | type_signal = { set_signal, free_none }, |
| 597 | type_collections = { set_collections, free_collectionlist }, |
| 598 | type_boolean = { set_boolean, free_none }, |
| 599 | type_string = { set_string, free_string }, |
| 600 | type_stringlist = { set_stringlist, free_stringlist }, |
| 601 | type_integer = { set_integer, free_none }, |
| 602 | type_stringlist_accum = { set_stringlist_accum, free_stringlistlist }, |
| 603 | type_string_accum = { set_string_accum, free_stringlist }, |
| 604 | type_sample_format = { set_sample_format, free_none }, |
| 605 | type_restrict = { set_restrict, free_none }, |
| 606 | type_namepart = { set_namepart, free_namepartlist }, |
| 607 | type_transform = { set_transform, free_transformlist }, |
| 608 | type_rights = { set_rights, free_none }, |
| 609 | type_backend = { set_backend, free_none }; |
| 610 | |
| 611 | /* specific validation routine */ |
| 612 | |
| 613 | #define VALIDATE_FILE(test, what) do { \ |
| 614 | struct stat sb; \ |
| 615 | int n; \ |
| 616 | \ |
| 617 | for(n = 0; n < nvec; ++n) { \ |
| 618 | if(stat(vec[n], &sb) < 0) { \ |
| 619 | error(errno, "%s:%d: %s", cs->path, cs->line, vec[n]); \ |
| 620 | return -1; \ |
| 621 | } \ |
| 622 | if(!test(sb.st_mode)) { \ |
| 623 | error(0, "%s:%d: %s is not a %s", \ |
| 624 | cs->path, cs->line, vec[n], what); \ |
| 625 | return -1; \ |
| 626 | } \ |
| 627 | } \ |
| 628 | } while(0) |
| 629 | |
| 630 | static int validate_isabspath(const struct config_state *cs, |
| 631 | int nvec, char **vec) { |
| 632 | int n; |
| 633 | |
| 634 | for(n = 0; n < nvec; ++n) |
| 635 | if(vec[n][0] != '/') { |
| 636 | error(errno, "%s:%d: %s: not an absolute path", |
| 637 | cs->path, cs->line, vec[n]); |
| 638 | return -1; |
| 639 | } |
| 640 | return 0; |
| 641 | } |
| 642 | |
| 643 | static int validate_isdir(const struct config_state *cs, |
| 644 | int nvec, char **vec) { |
| 645 | VALIDATE_FILE(S_ISDIR, "directory"); |
| 646 | return 0; |
| 647 | } |
| 648 | |
| 649 | static int validate_isreg(const struct config_state *cs, |
| 650 | int nvec, char **vec) { |
| 651 | VALIDATE_FILE(S_ISREG, "regular file"); |
| 652 | return 0; |
| 653 | } |
| 654 | |
| 655 | static int validate_ischr(const struct config_state *cs, |
| 656 | int nvec, char **vec) { |
| 657 | VALIDATE_FILE(S_ISCHR, "character device"); |
| 658 | return 0; |
| 659 | } |
| 660 | |
| 661 | static int validate_player(const struct config_state *cs, |
| 662 | int nvec, |
| 663 | char attribute((unused)) **vec) { |
| 664 | if(nvec < 2) { |
| 665 | error(0, "%s:%d: should be at least 'player PATTERN MODULE'", |
| 666 | cs->path, cs->line); |
| 667 | return -1; |
| 668 | } |
| 669 | return 0; |
| 670 | } |
| 671 | |
| 672 | static int validate_tracklength(const struct config_state *cs, |
| 673 | int nvec, |
| 674 | char attribute((unused)) **vec) { |
| 675 | if(nvec < 2) { |
| 676 | error(0, "%s:%d: should be at least 'tracklength PATTERN MODULE'", |
| 677 | cs->path, cs->line); |
| 678 | return -1; |
| 679 | } |
| 680 | return 0; |
| 681 | } |
| 682 | |
| 683 | static int validate_allow(const struct config_state *cs, |
| 684 | int nvec, |
| 685 | char attribute((unused)) **vec) { |
| 686 | if(nvec != 2) { |
| 687 | error(0, "%s:%d: must be 'allow NAME PASS'", cs->path, cs->line); |
| 688 | return -1; |
| 689 | } |
| 690 | return 0; |
| 691 | } |
| 692 | |
| 693 | static int validate_non_negative(const struct config_state *cs, |
| 694 | int nvec, char **vec) { |
| 695 | long n; |
| 696 | |
| 697 | if(nvec < 1) { |
| 698 | error(0, "%s:%d: missing argument", cs->path, cs->line); |
| 699 | return -1; |
| 700 | } |
| 701 | if(nvec > 1) { |
| 702 | error(0, "%s:%d: too many arguments", cs->path, cs->line); |
| 703 | return -1; |
| 704 | } |
| 705 | if(xstrtol(&n, vec[0], 0, 0)) { |
| 706 | error(0, "%s:%d: %s", cs->path, cs->line, strerror(errno)); |
| 707 | return -1; |
| 708 | } |
| 709 | if(n < 0) { |
| 710 | error(0, "%s:%d: must not be negative", cs->path, cs->line); |
| 711 | return -1; |
| 712 | } |
| 713 | return 0; |
| 714 | } |
| 715 | |
| 716 | static int validate_positive(const struct config_state *cs, |
| 717 | int nvec, char **vec) { |
| 718 | long n; |
| 719 | |
| 720 | if(nvec < 1) { |
| 721 | error(0, "%s:%d: missing argument", cs->path, cs->line); |
| 722 | return -1; |
| 723 | } |
| 724 | if(nvec > 1) { |
| 725 | error(0, "%s:%d: too many arguments", cs->path, cs->line); |
| 726 | return -1; |
| 727 | } |
| 728 | if(xstrtol(&n, vec[0], 0, 0)) { |
| 729 | error(0, "%s:%d: %s", cs->path, cs->line, strerror(errno)); |
| 730 | return -1; |
| 731 | } |
| 732 | if(n <= 0) { |
| 733 | error(0, "%s:%d: must be positive", cs->path, cs->line); |
| 734 | return -1; |
| 735 | } |
| 736 | return 0; |
| 737 | } |
| 738 | |
| 739 | static int validate_isauser(const struct config_state *cs, |
| 740 | int attribute((unused)) nvec, |
| 741 | char **vec) { |
| 742 | struct passwd *pw; |
| 743 | |
| 744 | if(!(pw = getpwnam(vec[0]))) { |
| 745 | error(0, "%s:%d: no such user as '%s'", cs->path, cs->line, vec[0]); |
| 746 | return -1; |
| 747 | } |
| 748 | return 0; |
| 749 | } |
| 750 | |
| 751 | static int validate_sample_format(const struct config_state *cs, |
| 752 | int attribute((unused)) nvec, |
| 753 | char **vec) { |
| 754 | return parse_sample_format(cs, 0, nvec, vec); |
| 755 | } |
| 756 | |
| 757 | static int validate_channel(const struct config_state *cs, |
| 758 | int attribute((unused)) nvec, |
| 759 | char **vec) { |
| 760 | if(mixer_channel(vec[0]) == -1) { |
| 761 | error(0, "%s:%d: invalid channel '%s'", cs->path, cs->line, vec[0]); |
| 762 | return -1; |
| 763 | } |
| 764 | return 0; |
| 765 | } |
| 766 | |
| 767 | static int validate_any(const struct config_state attribute((unused)) *cs, |
| 768 | int attribute((unused)) nvec, |
| 769 | char attribute((unused)) **vec) { |
| 770 | return 0; |
| 771 | } |
| 772 | |
| 773 | static int validate_url(const struct config_state attribute((unused)) *cs, |
| 774 | int attribute((unused)) nvec, |
| 775 | char **vec) { |
| 776 | const char *s; |
| 777 | int n; |
| 778 | /* absoluteURI = scheme ":" ( hier_part | opaque_part ) |
| 779 | scheme = alpha *( alpha | digit | "+" | "-" | "." ) */ |
| 780 | s = vec[0]; |
| 781 | n = strspn(s, ("abcdefghijklmnopqrstuvwxyz" |
| 782 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" |
| 783 | "0123456789")); |
| 784 | if(s[n] != ':') { |
| 785 | error(0, "%s:%d: invalid url '%s'", cs->path, cs->line, vec[0]); |
| 786 | return -1; |
| 787 | } |
| 788 | if(!strncmp(s, "http:", 5) |
| 789 | || !strncmp(s, "https:", 6)) { |
| 790 | s += n + 1; |
| 791 | /* we only do a rather cursory check */ |
| 792 | if(strncmp(s, "//", 2)) { |
| 793 | error(0, "%s:%d: invalid url '%s'", cs->path, cs->line, vec[0]); |
| 794 | return -1; |
| 795 | } |
| 796 | } |
| 797 | return 0; |
| 798 | } |
| 799 | |
| 800 | static int validate_alias(const struct config_state *cs, |
| 801 | int nvec, |
| 802 | char **vec) { |
| 803 | const char *s; |
| 804 | int in_brackets = 0, c; |
| 805 | |
| 806 | if(nvec < 1) { |
| 807 | error(0, "%s:%d: missing argument", cs->path, cs->line); |
| 808 | return -1; |
| 809 | } |
| 810 | if(nvec > 1) { |
| 811 | error(0, "%s:%d: too many arguments", cs->path, cs->line); |
| 812 | return -1; |
| 813 | } |
| 814 | s = vec[0]; |
| 815 | while((c = (unsigned char)*s++)) { |
| 816 | if(in_brackets) { |
| 817 | if(c == '}') |
| 818 | in_brackets = 0; |
| 819 | else if(!isalnum(c)) { |
| 820 | error(0, "%s:%d: invalid part name in alias expansion in '%s'", |
| 821 | cs->path, cs->line, vec[0]); |
| 822 | return -1; |
| 823 | } |
| 824 | } else { |
| 825 | if(c == '{') { |
| 826 | in_brackets = 1; |
| 827 | if(*s == '/') |
| 828 | ++s; |
| 829 | } else if(c == '\\') { |
| 830 | if(!(c = (unsigned char)*s++)) { |
| 831 | error(0, "%s:%d: unterminated escape in alias expansion in '%s'", |
| 832 | cs->path, cs->line, vec[0]); |
| 833 | return -1; |
| 834 | } else if(c != '\\' && c != '{') { |
| 835 | error(0, "%s:%d: invalid escape in alias expansion in '%s'", |
| 836 | cs->path, cs->line, vec[0]); |
| 837 | return -1; |
| 838 | } |
| 839 | } |
| 840 | } |
| 841 | ++s; |
| 842 | } |
| 843 | if(in_brackets) { |
| 844 | error(0, "%s:%d: unterminated part name in alias expansion in '%s'", |
| 845 | cs->path, cs->line, vec[0]); |
| 846 | return -1; |
| 847 | } |
| 848 | return 0; |
| 849 | } |
| 850 | |
| 851 | static int validate_addrport(const struct config_state attribute((unused)) *cs, |
| 852 | int nvec, |
| 853 | char attribute((unused)) **vec) { |
| 854 | switch(nvec) { |
| 855 | case 0: |
| 856 | error(0, "%s:%d: missing address", |
| 857 | cs->path, cs->line); |
| 858 | return -1; |
| 859 | case 1: |
| 860 | error(0, "%s:%d: missing port name/number", |
| 861 | cs->path, cs->line); |
| 862 | return -1; |
| 863 | case 2: |
| 864 | return 0; |
| 865 | default: |
| 866 | error(0, "%s:%d: expected ADDRESS PORT", |
| 867 | cs->path, cs->line); |
| 868 | return -1; |
| 869 | } |
| 870 | } |
| 871 | |
| 872 | static int validate_port(const struct config_state attribute((unused)) *cs, |
| 873 | int nvec, |
| 874 | char attribute((unused)) **vec) { |
| 875 | switch(nvec) { |
| 876 | case 0: |
| 877 | error(0, "%s:%d: missing address", |
| 878 | cs->path, cs->line); |
| 879 | return -1; |
| 880 | case 1: |
| 881 | case 2: |
| 882 | return 0; |
| 883 | default: |
| 884 | error(0, "%s:%d: expected [ADDRESS] PORT", |
| 885 | cs->path, cs->line); |
| 886 | return -1; |
| 887 | } |
| 888 | } |
| 889 | |
| 890 | static int validate_algo(const struct config_state attribute((unused)) *cs, |
| 891 | int nvec, |
| 892 | char **vec) { |
| 893 | if(nvec != 1) { |
| 894 | error(0, "%s:%d: invalid algorithm specification", cs->path, cs->line); |
| 895 | return -1; |
| 896 | } |
| 897 | if(!valid_authhash(vec[0])) { |
| 898 | error(0, "%s:%d: unsuported algorithm '%s'", cs->path, cs->line, vec[0]); |
| 899 | return -1; |
| 900 | } |
| 901 | return 0; |
| 902 | } |
| 903 | |
| 904 | /** @brief Item name and and offset */ |
| 905 | #define C(x) #x, offsetof(struct config, x) |
| 906 | /** @brief Item name and and offset */ |
| 907 | #define C2(x,y) #x, offsetof(struct config, y) |
| 908 | |
| 909 | /** @brief All configuration items */ |
| 910 | static const struct conf conf[] = { |
| 911 | { C(alias), &type_string, validate_alias }, |
| 912 | { C(allow), &type_stringlist_accum, validate_allow }, |
| 913 | { C(authorization_algorithm), &type_string, validate_algo }, |
| 914 | { C(broadcast), &type_stringlist, validate_addrport }, |
| 915 | { C(broadcast_from), &type_stringlist, validate_addrport }, |
| 916 | { C(channel), &type_string, validate_channel }, |
| 917 | { C(checkpoint_kbyte), &type_integer, validate_non_negative }, |
| 918 | { C(checkpoint_min), &type_integer, validate_non_negative }, |
| 919 | { C(collection), &type_collections, validate_any }, |
| 920 | { C(connect), &type_stringlist, validate_addrport }, |
| 921 | { C(cookie_login_lifetime), &type_integer, validate_positive }, |
| 922 | { C(cookie_key_lifetime), &type_integer, validate_positive }, |
| 923 | { C(dbversion), &type_integer, validate_positive }, |
| 924 | { C(default_rights), &type_rights, validate_any }, |
| 925 | { C(device), &type_string, validate_any }, |
| 926 | { C(gap), &type_integer, validate_non_negative }, |
| 927 | { C(history), &type_integer, validate_positive }, |
| 928 | { C(home), &type_string, validate_isabspath }, |
| 929 | { C(listen), &type_stringlist, validate_port }, |
| 930 | { C(lock), &type_boolean, validate_any }, |
| 931 | { C(mixer), &type_string, validate_ischr }, |
| 932 | { C(multicast_loop), &type_boolean, validate_any }, |
| 933 | { C(multicast_ttl), &type_integer, validate_non_negative }, |
| 934 | { C(namepart), &type_namepart, validate_any }, |
| 935 | { C2(nice, nice_rescan), &type_integer, validate_non_negative }, |
| 936 | { C(nice_rescan), &type_integer, validate_non_negative }, |
| 937 | { C(nice_server), &type_integer, validate_any }, |
| 938 | { C(nice_speaker), &type_integer, validate_any }, |
| 939 | { C(noticed_history), &type_integer, validate_positive }, |
| 940 | { C(password), &type_string, validate_any }, |
| 941 | { C(player), &type_stringlist_accum, validate_player }, |
| 942 | { C(plugins), &type_string_accum, validate_isdir }, |
| 943 | { C(prefsync), &type_integer, validate_positive }, |
| 944 | { C(queue_pad), &type_integer, validate_positive }, |
| 945 | { C(refresh), &type_integer, validate_positive }, |
| 946 | { C2(restrict, restrictions), &type_restrict, validate_any }, |
| 947 | { C(sample_format), &type_sample_format, validate_sample_format }, |
| 948 | { C(scratch), &type_string_accum, validate_isreg }, |
| 949 | { C(short_display), &type_integer, validate_positive }, |
| 950 | { C(signal), &type_signal, validate_any }, |
| 951 | { C(sox_generation), &type_integer, validate_non_negative }, |
| 952 | { C(speaker_backend), &type_backend, validate_any }, |
| 953 | { C(speaker_command), &type_string, validate_any }, |
| 954 | { C(stopword), &type_string_accum, validate_any }, |
| 955 | { C(templates), &type_string_accum, validate_isdir }, |
| 956 | { C(tracklength), &type_stringlist_accum, validate_tracklength }, |
| 957 | { C(transform), &type_transform, validate_any }, |
| 958 | { C(trust), &type_string_accum, validate_any }, |
| 959 | { C(url), &type_string, validate_url }, |
| 960 | { C(user), &type_string, validate_isauser }, |
| 961 | { C(username), &type_string, validate_any }, |
| 962 | }; |
| 963 | |
| 964 | /** @brief Find a configuration item's definition by key */ |
| 965 | static const struct conf *find(const char *key) { |
| 966 | int n; |
| 967 | |
| 968 | if((n = TABLE_FIND(conf, struct conf, name, key)) < 0) |
| 969 | return 0; |
| 970 | return &conf[n]; |
| 971 | } |
| 972 | |
| 973 | /** @brief Set a new configuration value */ |
| 974 | static int config_set(const struct config_state *cs, |
| 975 | int nvec, char **vec) { |
| 976 | const struct conf *which; |
| 977 | |
| 978 | D(("config_set %s", vec[0])); |
| 979 | if(!(which = find(vec[0]))) { |
| 980 | error(0, "%s:%d: unknown configuration key '%s'", |
| 981 | cs->path, cs->line, vec[0]); |
| 982 | return -1; |
| 983 | } |
| 984 | return (which->validate(cs, nvec - 1, vec + 1) |
| 985 | || which->type->set(cs, which, nvec - 1, vec + 1)); |
| 986 | } |
| 987 | |
| 988 | /** @brief Error callback used by config_include() */ |
| 989 | static void config_error(const char *msg, void *u) { |
| 990 | const struct config_state *cs = u; |
| 991 | |
| 992 | error(0, "%s:%d: %s", cs->path, cs->line, msg); |
| 993 | } |
| 994 | |
| 995 | /** @brief Include a file by name */ |
| 996 | static int config_include(struct config *c, const char *path) { |
| 997 | FILE *fp; |
| 998 | char *buffer, *inputbuffer, **vec; |
| 999 | int n, ret = 0; |
| 1000 | struct config_state cs; |
| 1001 | |
| 1002 | cs.path = path; |
| 1003 | cs.line = 0; |
| 1004 | cs.config = c; |
| 1005 | D(("%s: reading configuration", path)); |
| 1006 | if(!(fp = fopen(path, "r"))) { |
| 1007 | error(errno, "error opening %s", path); |
| 1008 | return -1; |
| 1009 | } |
| 1010 | while(!inputline(path, fp, &inputbuffer, '\n')) { |
| 1011 | ++cs.line; |
| 1012 | if(!(buffer = mb2utf8(inputbuffer))) { |
| 1013 | error(errno, "%s:%d: cannot convert to UTF-8", cs.path, cs.line); |
| 1014 | ret = -1; |
| 1015 | xfree(inputbuffer); |
| 1016 | continue; |
| 1017 | } |
| 1018 | xfree(inputbuffer); |
| 1019 | if(!(vec = split(buffer, &n, SPLIT_COMMENTS|SPLIT_QUOTES, |
| 1020 | config_error, &cs))) { |
| 1021 | ret = -1; |
| 1022 | xfree(buffer); |
| 1023 | continue; |
| 1024 | } |
| 1025 | if(n) { |
| 1026 | if(!strcmp(vec[0], "include")) { |
| 1027 | if(n != 2) { |
| 1028 | error(0, "%s:%d: must be 'include PATH'", cs.path, cs.line); |
| 1029 | ret = -1; |
| 1030 | } else |
| 1031 | config_include(c, vec[1]); |
| 1032 | } else |
| 1033 | ret |= config_set(&cs, n, vec); |
| 1034 | } |
| 1035 | for(n = 0; vec[n]; ++n) xfree(vec[n]); |
| 1036 | xfree(vec); |
| 1037 | xfree(buffer); |
| 1038 | } |
| 1039 | if(ferror(fp)) { |
| 1040 | error(errno, "error reading %s", path); |
| 1041 | ret = -1; |
| 1042 | } |
| 1043 | fclose(fp); |
| 1044 | return ret; |
| 1045 | } |
| 1046 | |
| 1047 | /** @brief Make a new default configuration */ |
| 1048 | static struct config *config_default(void) { |
| 1049 | struct config *c = xmalloc(sizeof *c); |
| 1050 | const char *logname; |
| 1051 | struct passwd *pw; |
| 1052 | |
| 1053 | /* Strings had better be xstrdup'd as they will get freed at some point. */ |
| 1054 | c->gap = 2; |
| 1055 | c->history = 60; |
| 1056 | c->home = xstrdup(pkgstatedir); |
| 1057 | if(!(pw = getpwuid(getuid()))) |
| 1058 | fatal(0, "cannot determine our username"); |
| 1059 | logname = pw->pw_name; |
| 1060 | c->username = xstrdup(logname); |
| 1061 | c->refresh = 15; |
| 1062 | c->prefsync = 3600; |
| 1063 | c->signal = SIGKILL; |
| 1064 | c->alias = xstrdup("{/artist}{/album}{/title}{ext}"); |
| 1065 | c->lock = 1; |
| 1066 | c->device = xstrdup("default"); |
| 1067 | c->nice_rescan = 10; |
| 1068 | c->speaker_command = 0; |
| 1069 | c->sample_format.bits = 16; |
| 1070 | c->sample_format.rate = 44100; |
| 1071 | c->sample_format.channels = 2; |
| 1072 | c->sample_format.endian = ENDIAN_NATIVE; |
| 1073 | c->queue_pad = 10; |
| 1074 | c->speaker_backend = -1; |
| 1075 | c->multicast_ttl = 1; |
| 1076 | c->multicast_loop = 1; |
| 1077 | c->authorization_algorithm = xstrdup("sha1"); |
| 1078 | c->noticed_history = 31; |
| 1079 | c->short_display = 32; |
| 1080 | c->mixer = xstrdup("/dev/mixer"); |
| 1081 | c->channel = xstrdup("pcm"); |
| 1082 | c->dbversion = 2; |
| 1083 | c->cookie_login_lifetime = 86400; |
| 1084 | c->cookie_key_lifetime = 86400 * 7; |
| 1085 | return c; |
| 1086 | } |
| 1087 | |
| 1088 | static char *get_file(struct config *c, const char *name) { |
| 1089 | char *s; |
| 1090 | |
| 1091 | byte_xasprintf(&s, "%s/%s", c->home, name); |
| 1092 | return s; |
| 1093 | } |
| 1094 | |
| 1095 | /** @brief Set the default configuration file */ |
| 1096 | static void set_configfile(void) { |
| 1097 | if(!configfile) |
| 1098 | byte_xasprintf(&configfile, "%s/config", pkgconfdir); |
| 1099 | } |
| 1100 | |
| 1101 | /** @brief Free a configuration object */ |
| 1102 | static void config_free(struct config *c) { |
| 1103 | int n; |
| 1104 | |
| 1105 | if(c) { |
| 1106 | for(n = 0; n < (int)(sizeof conf / sizeof *conf); ++n) |
| 1107 | conf[n].type->free(c, &conf[n]); |
| 1108 | for(n = 0; n < c->nparts; ++n) |
| 1109 | xfree(c->parts[n]); |
| 1110 | xfree(c->parts); |
| 1111 | xfree(c); |
| 1112 | } |
| 1113 | } |
| 1114 | |
| 1115 | /** @brief Set post-parse defaults */ |
| 1116 | static void config_postdefaults(struct config *c, |
| 1117 | int server) { |
| 1118 | struct config_state cs; |
| 1119 | const struct conf *whoami; |
| 1120 | int n; |
| 1121 | |
| 1122 | static const char *namepart[][4] = { |
| 1123 | { "title", "/([0-9]+ *[-:] *)?([^/]+)\\.[a-zA-Z0-9]+$", "$2", "display" }, |
| 1124 | { "title", "/([^/]+)\\.[a-zA-Z0-9]+$", "$1", "sort" }, |
| 1125 | { "album", "/([^/]+)/[^/]+$", "$1", "*" }, |
| 1126 | { "artist", "/([^/]+)/[^/]+/[^/]+$", "$1", "*" }, |
| 1127 | { "ext", "(\\.[a-zA-Z0-9]+)$", "$1", "*" }, |
| 1128 | }; |
| 1129 | #define NNAMEPART (int)(sizeof namepart / sizeof *namepart) |
| 1130 | |
| 1131 | static const char *transform[][5] = { |
| 1132 | { "track", "^.*/([0-9]+ *[-:] *)?([^/]+)\\.[a-zA-Z0-9]+$", "$2", "display", "" }, |
| 1133 | { "track", "^.*/([^/]+)\\.[a-zA-Z0-9]+$", "$1", "sort", "" }, |
| 1134 | { "dir", "^.*/([^/]+)$", "$1", "*", "" }, |
| 1135 | { "dir", "^(the) ([^/]*)", "$2, $1", "sort", "i", }, |
| 1136 | { "dir", "[[:punct:]]", "", "sort", "g", } |
| 1137 | }; |
| 1138 | #define NTRANSFORM (int)(sizeof transform / sizeof *transform) |
| 1139 | |
| 1140 | cs.path = "<internal>"; |
| 1141 | cs.line = 0; |
| 1142 | cs.config = c; |
| 1143 | if(!c->namepart.n) { |
| 1144 | whoami = find("namepart"); |
| 1145 | for(n = 0; n < NNAMEPART; ++n) |
| 1146 | set_namepart(&cs, whoami, 4, (char **)namepart[n]); |
| 1147 | } |
| 1148 | if(!c->transform.n) { |
| 1149 | whoami = find("transform"); |
| 1150 | for(n = 0; n < NTRANSFORM; ++n) |
| 1151 | set_transform(&cs, whoami, 5, (char **)transform[n]); |
| 1152 | } |
| 1153 | if(c->speaker_backend == -1) { |
| 1154 | if(c->speaker_command) |
| 1155 | c->speaker_backend = BACKEND_COMMAND; |
| 1156 | else if(c->broadcast.n) |
| 1157 | c->speaker_backend = BACKEND_NETWORK; |
| 1158 | else { |
| 1159 | #if HAVE_ALSA_ASOUNDLIB_H |
| 1160 | c->speaker_backend = BACKEND_ALSA; |
| 1161 | #elif HAVE_SYS_SOUNDCARD_H |
| 1162 | c->speaker_backend = BACKEND_OSS; |
| 1163 | #elif HAVE_COREAUDIO_AUDIOHARDWARE_H |
| 1164 | c->speaker_backend = BACKEND_COREAUDIO; |
| 1165 | #else |
| 1166 | c->speaker_backend = BACKEND_COMMAND; |
| 1167 | #endif |
| 1168 | } |
| 1169 | } |
| 1170 | if(server) { |
| 1171 | if(c->speaker_backend == BACKEND_COMMAND && !c->speaker_command) |
| 1172 | fatal(0, "speaker_backend is command but speaker_command is not set"); |
| 1173 | if(c->speaker_backend == BACKEND_NETWORK && !c->broadcast.n) |
| 1174 | fatal(0, "speaker_backend is network but broadcast is not set"); |
| 1175 | } |
| 1176 | /* Override sample format */ |
| 1177 | switch(c->speaker_backend) { |
| 1178 | case BACKEND_NETWORK: |
| 1179 | c->sample_format.rate = 44100; |
| 1180 | c->sample_format.channels = 2; |
| 1181 | c->sample_format.bits = 16; |
| 1182 | c->sample_format.endian = ENDIAN_BIG; |
| 1183 | break; |
| 1184 | case BACKEND_COREAUDIO: |
| 1185 | c->sample_format.rate = 44100; |
| 1186 | c->sample_format.channels = 2; |
| 1187 | c->sample_format.bits = 16; |
| 1188 | c->sample_format.endian = ENDIAN_NATIVE; |
| 1189 | break; |
| 1190 | } |
| 1191 | if(!c->default_rights) { |
| 1192 | rights_type r = RIGHTS__MASK & ~(RIGHT_ADMIN|RIGHT_REGISTER |
| 1193 | |RIGHT_MOVE__MASK |
| 1194 | |RIGHT_SCRATCH__MASK |
| 1195 | |RIGHT_REMOVE__MASK); |
| 1196 | /* The idea is to approximate the meaning of the old 'restrict' directive |
| 1197 | * in the default rights if they are not overridden. */ |
| 1198 | if(c->restrictions & RESTRICT_SCRATCH) |
| 1199 | r |= RIGHT_SCRATCH_MINE|RIGHT_SCRATCH_RANDOM; |
| 1200 | else |
| 1201 | r |= RIGHT_SCRATCH_ANY; |
| 1202 | if(!(c->restrictions & RESTRICT_MOVE)) |
| 1203 | r |= RIGHT_MOVE_ANY; |
| 1204 | if(c->restrictions & RESTRICT_REMOVE) |
| 1205 | r |= RIGHT_REMOVE_MINE; |
| 1206 | else |
| 1207 | r |= RIGHT_REMOVE_ANY; |
| 1208 | c->default_rights = rights_string(r); |
| 1209 | } |
| 1210 | } |
| 1211 | |
| 1212 | /** @brief (Re-)read the config file |
| 1213 | * @param server If set, do extra checking |
| 1214 | */ |
| 1215 | int config_read(int server) { |
| 1216 | struct config *c; |
| 1217 | char *privconf; |
| 1218 | struct passwd *pw; |
| 1219 | |
| 1220 | set_configfile(); |
| 1221 | c = config_default(); |
| 1222 | /* standalone Disobedience installs might not have a global config file */ |
| 1223 | if(access(configfile, F_OK) == 0) |
| 1224 | if(config_include(c, configfile)) |
| 1225 | return -1; |
| 1226 | /* if we can read the private config file, do */ |
| 1227 | if((privconf = config_private()) |
| 1228 | && access(privconf, R_OK) == 0 |
| 1229 | && config_include(c, privconf)) |
| 1230 | return -1; |
| 1231 | xfree(privconf); |
| 1232 | /* if there's a per-user system config file for this user, read it */ |
| 1233 | if(config_per_user) { |
| 1234 | if(!(pw = getpwuid(getuid()))) |
| 1235 | fatal(0, "cannot determine our username"); |
| 1236 | if((privconf = config_usersysconf(pw)) |
| 1237 | && access(privconf, F_OK) == 0 |
| 1238 | && config_include(c, privconf)) |
| 1239 | return -1; |
| 1240 | xfree(privconf); |
| 1241 | /* if we have a password file, read it */ |
| 1242 | if((privconf = config_userconf(getenv("HOME"), pw)) |
| 1243 | && access(privconf, F_OK) == 0 |
| 1244 | && config_include(c, privconf)) |
| 1245 | return -1; |
| 1246 | xfree(privconf); |
| 1247 | } |
| 1248 | /* install default namepart and transform settings */ |
| 1249 | config_postdefaults(c, server); |
| 1250 | /* everything is good so we shall use the new config */ |
| 1251 | config_free(config); |
| 1252 | /* warn about obsolete directives */ |
| 1253 | if(c->restrictions) |
| 1254 | error(0, "'restrict' will be removed in a future version"); |
| 1255 | if(c->allow.n) |
| 1256 | error(0, "'allow' will be removed in a future version"); |
| 1257 | if(c->trust.n) |
| 1258 | error(0, "'trust' will be removed in a future version"); |
| 1259 | config = c; |
| 1260 | return 0; |
| 1261 | } |
| 1262 | |
| 1263 | /** @brief Return the path to the private configuration file */ |
| 1264 | char *config_private(void) { |
| 1265 | char *s; |
| 1266 | |
| 1267 | set_configfile(); |
| 1268 | byte_xasprintf(&s, "%s.private", configfile); |
| 1269 | return s; |
| 1270 | } |
| 1271 | |
| 1272 | /** @brief Return the path to user's personal configuration file */ |
| 1273 | char *config_userconf(const char *home, const struct passwd *pw) { |
| 1274 | char *s; |
| 1275 | |
| 1276 | if(!home && !pw && !(pw = getpwuid(getuid()))) |
| 1277 | fatal(0, "cannot determine our username"); |
| 1278 | byte_xasprintf(&s, "%s/.disorder/passwd", home ? home : pw->pw_dir); |
| 1279 | return s; |
| 1280 | } |
| 1281 | |
| 1282 | /** @brief Return the path to user-specific system configuration */ |
| 1283 | char *config_usersysconf(const struct passwd *pw) { |
| 1284 | char *s; |
| 1285 | |
| 1286 | set_configfile(); |
| 1287 | if(!strchr(pw->pw_name, '/')) { |
| 1288 | byte_xasprintf(&s, "%s.%s", configfile, pw->pw_name); |
| 1289 | return s; |
| 1290 | } else |
| 1291 | return 0; |
| 1292 | } |
| 1293 | |
| 1294 | char *config_get_file(const char *name) { |
| 1295 | return get_file(config, name); |
| 1296 | } |
| 1297 | |
| 1298 | /* |
| 1299 | Local Variables: |
| 1300 | c-basic-offset:2 |
| 1301 | comment-column:40 |
| 1302 | fill-column:79 |
| 1303 | End: |
| 1304 | */ |