| 1 | /* |
| 2 | * This file is part of DisOrder. |
| 3 | * Copyright (C) 2004-2010 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 3 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, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU 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, see <http://www.gnu.org/licenses/>. |
| 18 | */ |
| 19 | /** @file lib/configuration.c |
| 20 | * @brief Configuration file support |
| 21 | */ |
| 22 | |
| 23 | #include "common.h" |
| 24 | |
| 25 | #include <errno.h> |
| 26 | #include <sys/types.h> |
| 27 | #include <sys/stat.h> |
| 28 | #include <unistd.h> |
| 29 | #include <ctype.h> |
| 30 | #include <stddef.h> |
| 31 | #include <pwd.h> |
| 32 | #include <langinfo.h> |
| 33 | #include <pcre.h> |
| 34 | #include <signal.h> |
| 35 | |
| 36 | #include "rights.h" |
| 37 | #include "configuration.h" |
| 38 | #include "mem.h" |
| 39 | #include "log.h" |
| 40 | #include "split.h" |
| 41 | #include "syscalls.h" |
| 42 | #include "table.h" |
| 43 | #include "inputline.h" |
| 44 | #include "charset.h" |
| 45 | #include "defs.h" |
| 46 | #include "printf.h" |
| 47 | #include "regsub.h" |
| 48 | #include "signame.h" |
| 49 | #include "authhash.h" |
| 50 | #include "vector.h" |
| 51 | #include "uaudio.h" |
| 52 | |
| 53 | /** @brief Path to config file |
| 54 | * |
| 55 | * set_configfile() sets the default if it is null. |
| 56 | */ |
| 57 | char *configfile; |
| 58 | |
| 59 | /** @brief Read user configuration |
| 60 | * |
| 61 | * If clear, the user-specific configuration is not read. |
| 62 | */ |
| 63 | int config_per_user = 1; |
| 64 | |
| 65 | /** @brief Table of audio APIs |
| 66 | * |
| 67 | * Only set in server processes. |
| 68 | */ |
| 69 | const struct uaudio *const *config_uaudio_apis; |
| 70 | |
| 71 | /** @brief Config file parser state */ |
| 72 | struct config_state { |
| 73 | /** @brief Filename */ |
| 74 | const char *path; |
| 75 | |
| 76 | /** @brief Line number */ |
| 77 | int line; |
| 78 | |
| 79 | /** @brief Configuration object under construction */ |
| 80 | struct config *config; |
| 81 | }; |
| 82 | |
| 83 | /** @brief Current configuration */ |
| 84 | struct config *config; |
| 85 | |
| 86 | /** @brief One configuration item */ |
| 87 | struct conf { |
| 88 | /** @brief Name as it appears in the config file */ |
| 89 | const char *name; |
| 90 | |
| 91 | /** @brief Offset in @ref config structure */ |
| 92 | size_t offset; |
| 93 | |
| 94 | /** @brief Pointer to item type */ |
| 95 | const struct conftype *type; |
| 96 | |
| 97 | /** @brief Pointer to item-specific validation routine |
| 98 | * @param cs Configuration state |
| 99 | * @param nvec Length of (proposed) new value |
| 100 | * @param vec Elements of new value |
| 101 | * @return 0 on success, non-0 on error |
| 102 | * |
| 103 | * The validate function should report any error it detects. |
| 104 | */ |
| 105 | int (*validate)(const struct config_state *cs, |
| 106 | int nvec, char **vec); |
| 107 | }; |
| 108 | |
| 109 | /** @brief Type of a configuration item */ |
| 110 | struct conftype { |
| 111 | /** @brief Pointer to function to set item |
| 112 | * @param cs Configuration state |
| 113 | * @param whoami Configuration item to set |
| 114 | * @param nvec Length of new value |
| 115 | * @param vec New value |
| 116 | * @return 0 on success, non-0 on error |
| 117 | */ |
| 118 | int (*set)(const struct config_state *cs, |
| 119 | const struct conf *whoami, |
| 120 | int nvec, char **vec); |
| 121 | |
| 122 | /** @brief Pointer to function to free item |
| 123 | * @param c Configuration structure to free an item of |
| 124 | * @param whoami Configuration item to free |
| 125 | */ |
| 126 | void (*free)(struct config *c, const struct conf *whoami); |
| 127 | }; |
| 128 | |
| 129 | /** @brief Compute the address of an item */ |
| 130 | #define ADDRESS(C, TYPE) ((TYPE *)((char *)(C) + whoami->offset)) |
| 131 | /** @brief Return the value of an item */ |
| 132 | #define VALUE(C, TYPE) (*ADDRESS(C, TYPE)) |
| 133 | |
| 134 | static int stringlist_compare(const struct stringlist *a, |
| 135 | const struct stringlist *b); |
| 136 | static int namepartlist_compare(const struct namepartlist *a, |
| 137 | const struct namepartlist *b); |
| 138 | |
| 139 | static int set_signal(const struct config_state *cs, |
| 140 | const struct conf *whoami, |
| 141 | int nvec, char **vec) { |
| 142 | int n; |
| 143 | |
| 144 | if(nvec != 1) { |
| 145 | disorder_error(0, "%s:%d: '%s' requires one argument", |
| 146 | cs->path, cs->line, whoami->name); |
| 147 | return -1; |
| 148 | } |
| 149 | if((n = find_signal(vec[0])) == -1) { |
| 150 | disorder_error(0, "%s:%d: unknown signal '%s'", |
| 151 | cs->path, cs->line, vec[0]); |
| 152 | return -1; |
| 153 | } |
| 154 | VALUE(cs->config, int) = n; |
| 155 | return 0; |
| 156 | } |
| 157 | |
| 158 | static int set_collections(const struct config_state *cs, |
| 159 | const struct conf *whoami, |
| 160 | int nvec, char **vec) { |
| 161 | struct collectionlist *cl; |
| 162 | const char *root, *encoding, *module; |
| 163 | |
| 164 | switch(nvec) { |
| 165 | case 1: |
| 166 | module = 0; |
| 167 | encoding = 0; |
| 168 | root = vec[0]; |
| 169 | break; |
| 170 | case 2: |
| 171 | module = vec[0]; |
| 172 | encoding = 0; |
| 173 | root = vec[1]; |
| 174 | break; |
| 175 | case 3: |
| 176 | module = vec[0]; |
| 177 | encoding = vec[1]; |
| 178 | root = vec[2]; |
| 179 | break; |
| 180 | case 0: |
| 181 | disorder_error(0, "%s:%d: '%s' requires at least one argument", |
| 182 | cs->path, cs->line, whoami->name); |
| 183 | return -1; |
| 184 | default: |
| 185 | disorder_error(0, "%s:%d: '%s' requires at most three arguments", |
| 186 | cs->path, cs->line, whoami->name); |
| 187 | return -1; |
| 188 | } |
| 189 | /* Sanity check root */ |
| 190 | if(root[0] != '/') { |
| 191 | disorder_error(0, "%s:%d: collection root must start with '/'", |
| 192 | cs->path, cs->line); |
| 193 | return -1; |
| 194 | } |
| 195 | if(root[1] && root[strlen(root)-1] == '/') { |
| 196 | disorder_error(0, "%s:%d: collection root must not end with '/'", |
| 197 | cs->path, cs->line); |
| 198 | return -1; |
| 199 | } |
| 200 | /* Defaults */ |
| 201 | if(!module) |
| 202 | module = "fs"; |
| 203 | if(!encoding) |
| 204 | encoding = nl_langinfo(CODESET); |
| 205 | cl = ADDRESS(cs->config, struct collectionlist); |
| 206 | ++cl->n; |
| 207 | cl->s = xrealloc(cl->s, cl->n * sizeof (struct collection)); |
| 208 | cl->s[cl->n - 1].module = xstrdup(module); |
| 209 | cl->s[cl->n - 1].encoding = xstrdup(encoding); |
| 210 | cl->s[cl->n - 1].root = xstrdup(root); |
| 211 | return 0; |
| 212 | } |
| 213 | |
| 214 | static int set_boolean(const struct config_state *cs, |
| 215 | const struct conf *whoami, |
| 216 | int nvec, char **vec) { |
| 217 | int state; |
| 218 | |
| 219 | if(nvec != 1) { |
| 220 | disorder_error(0, "%s:%d: '%s' takes only one argument", |
| 221 | cs->path, cs->line, whoami->name); |
| 222 | return -1; |
| 223 | } |
| 224 | if(!strcmp(vec[0], "yes")) state = 1; |
| 225 | else if(!strcmp(vec[0], "no")) state = 0; |
| 226 | else { |
| 227 | disorder_error(0, "%s:%d: argument to '%s' must be 'yes' or 'no'", |
| 228 | cs->path, cs->line, whoami->name); |
| 229 | return -1; |
| 230 | } |
| 231 | VALUE(cs->config, int) = state; |
| 232 | return 0; |
| 233 | } |
| 234 | |
| 235 | static int set_string(const struct config_state *cs, |
| 236 | const struct conf *whoami, |
| 237 | int nvec, char **vec) { |
| 238 | if(nvec != 1) { |
| 239 | disorder_error(0, "%s:%d: '%s' takes only one argument", |
| 240 | cs->path, cs->line, whoami->name); |
| 241 | return -1; |
| 242 | } |
| 243 | xfree(VALUE(cs->config, char *)); |
| 244 | VALUE(cs->config, char *) = xstrdup(vec[0]); |
| 245 | return 0; |
| 246 | } |
| 247 | |
| 248 | static int set_stringlist(const struct config_state *cs, |
| 249 | const struct conf *whoami, |
| 250 | int nvec, char **vec) { |
| 251 | int n; |
| 252 | struct stringlist *sl; |
| 253 | |
| 254 | sl = ADDRESS(cs->config, struct stringlist); |
| 255 | sl->n = 0; |
| 256 | for(n = 0; n < nvec; ++n) { |
| 257 | sl->n++; |
| 258 | sl->s = xrealloc(sl->s, (sl->n * sizeof (char *))); |
| 259 | sl->s[sl->n - 1] = xstrdup(vec[n]); |
| 260 | } |
| 261 | return 0; |
| 262 | } |
| 263 | |
| 264 | static int set_integer(const struct config_state *cs, |
| 265 | const struct conf *whoami, |
| 266 | int nvec, char **vec) { |
| 267 | char *e; |
| 268 | |
| 269 | if(nvec != 1) { |
| 270 | disorder_error(0, "%s:%d: '%s' takes only one argument", |
| 271 | cs->path, cs->line, whoami->name); |
| 272 | return -1; |
| 273 | } |
| 274 | if(xstrtol(ADDRESS(cs->config, long), vec[0], &e, 0)) { |
| 275 | disorder_error(errno, "%s:%d: converting integer", cs->path, cs->line); |
| 276 | return -1; |
| 277 | } |
| 278 | if(*e) { |
| 279 | disorder_error(0, "%s:%d: invalid integer syntax", cs->path, cs->line); |
| 280 | return -1; |
| 281 | } |
| 282 | return 0; |
| 283 | } |
| 284 | |
| 285 | static int set_stringlist_accum(const struct config_state *cs, |
| 286 | const struct conf *whoami, |
| 287 | int nvec, char **vec) { |
| 288 | int n; |
| 289 | struct stringlist *s; |
| 290 | struct stringlistlist *sll; |
| 291 | |
| 292 | sll = ADDRESS(cs->config, struct stringlistlist); |
| 293 | if(nvec == 0) { |
| 294 | sll->n = 0; |
| 295 | return 0; |
| 296 | } |
| 297 | sll->n++; |
| 298 | sll->s = xrealloc(sll->s, (sll->n * sizeof (struct stringlist))); |
| 299 | s = &sll->s[sll->n - 1]; |
| 300 | s->n = nvec; |
| 301 | s->s = xmalloc((nvec + 1) * sizeof (char *)); |
| 302 | for(n = 0; n < nvec; ++n) |
| 303 | s->s[n] = xstrdup(vec[n]); |
| 304 | return 0; |
| 305 | } |
| 306 | |
| 307 | static int set_string_accum(const struct config_state *cs, |
| 308 | const struct conf *whoami, |
| 309 | int nvec, char **vec) { |
| 310 | int n; |
| 311 | struct stringlist *sl; |
| 312 | |
| 313 | sl = ADDRESS(cs->config, struct stringlist); |
| 314 | if(nvec == 0) { |
| 315 | sl->n = 0; |
| 316 | return 0; |
| 317 | } |
| 318 | for(n = 0; n < nvec; ++n) { |
| 319 | sl->n++; |
| 320 | sl->s = xrealloc(sl->s, (sl->n * sizeof (char *))); |
| 321 | sl->s[sl->n - 1] = xstrdup(vec[n]); |
| 322 | } |
| 323 | return 0; |
| 324 | } |
| 325 | |
| 326 | static int parse_sample_format(const struct config_state *cs, |
| 327 | struct stream_header *format, |
| 328 | int nvec, char **vec) { |
| 329 | char *p = vec[0]; |
| 330 | long t; |
| 331 | |
| 332 | if(nvec != 1) { |
| 333 | disorder_error(0, "%s:%d: wrong number of arguments", cs->path, cs->line); |
| 334 | return -1; |
| 335 | } |
| 336 | if(xstrtol(&t, p, &p, 0)) { |
| 337 | disorder_error(errno, "%s:%d: converting bits-per-sample", |
| 338 | cs->path, cs->line); |
| 339 | return -1; |
| 340 | } |
| 341 | if(t != 8 && t != 16) { |
| 342 | disorder_error(0, "%s:%d: bad bits-per-sample (%ld)", |
| 343 | cs->path, cs->line, t); |
| 344 | return -1; |
| 345 | } |
| 346 | if(format) format->bits = t; |
| 347 | switch (*p) { |
| 348 | case 'l': case 'L': t = ENDIAN_LITTLE; p++; break; |
| 349 | case 'b': case 'B': t = ENDIAN_BIG; p++; break; |
| 350 | default: t = ENDIAN_NATIVE; break; |
| 351 | } |
| 352 | if(format) format->endian = t; |
| 353 | if(*p != '/') { |
| 354 | disorder_error(errno, "%s:%d: expected `/' after bits-per-sample", |
| 355 | cs->path, cs->line); |
| 356 | return -1; |
| 357 | } |
| 358 | p++; |
| 359 | if(xstrtol(&t, p, &p, 0)) { |
| 360 | disorder_error(errno, "%s:%d: converting sample-rate", cs->path, cs->line); |
| 361 | return -1; |
| 362 | } |
| 363 | if(t < 1 || t > INT_MAX) { |
| 364 | disorder_error(0, "%s:%d: silly sample-rate (%ld)", cs->path, cs->line, t); |
| 365 | return -1; |
| 366 | } |
| 367 | if(format) format->rate = t; |
| 368 | if(*p != '/') { |
| 369 | disorder_error(0, "%s:%d: expected `/' after sample-rate", |
| 370 | cs->path, cs->line); |
| 371 | return -1; |
| 372 | } |
| 373 | p++; |
| 374 | if(xstrtol(&t, p, &p, 0)) { |
| 375 | disorder_error(errno, "%s:%d: converting channels", cs->path, cs->line); |
| 376 | return -1; |
| 377 | } |
| 378 | if(t < 1 || t > 8) { |
| 379 | disorder_error(0, "%s:%d: silly number (%ld) of channels", |
| 380 | cs->path, cs->line, t); |
| 381 | return -1; |
| 382 | } |
| 383 | if(format) format->channels = t; |
| 384 | if(*p) { |
| 385 | disorder_error(0, "%s:%d: junk after channels", cs->path, cs->line); |
| 386 | return -1; |
| 387 | } |
| 388 | return 0; |
| 389 | } |
| 390 | |
| 391 | static int set_sample_format(const struct config_state *cs, |
| 392 | const struct conf *whoami, |
| 393 | int nvec, char **vec) { |
| 394 | return parse_sample_format(cs, ADDRESS(cs->config, struct stream_header), |
| 395 | nvec, vec); |
| 396 | } |
| 397 | |
| 398 | static int set_namepart(const struct config_state *cs, |
| 399 | const struct conf *whoami, |
| 400 | int nvec, char **vec) { |
| 401 | struct namepartlist *npl = ADDRESS(cs->config, struct namepartlist); |
| 402 | unsigned reflags; |
| 403 | const char *errstr; |
| 404 | int erroffset, n; |
| 405 | pcre *re; |
| 406 | |
| 407 | if(nvec < 3) { |
| 408 | disorder_error(0, "%s:%d: namepart needs at least 3 arguments", |
| 409 | cs->path, cs->line); |
| 410 | return -1; |
| 411 | } |
| 412 | if(nvec > 5) { |
| 413 | disorder_error(0, "%s:%d: namepart needs at most 5 arguments", |
| 414 | cs->path, cs->line); |
| 415 | return -1; |
| 416 | } |
| 417 | reflags = nvec >= 5 ? regsub_flags(vec[4]) : 0; |
| 418 | if(!(re = pcre_compile(vec[1], |
| 419 | PCRE_UTF8 |
| 420 | |regsub_compile_options(reflags), |
| 421 | &errstr, &erroffset, 0))) { |
| 422 | disorder_error(0, "%s:%d: compiling regexp /%s/: %s (offset %d)", |
| 423 | cs->path, cs->line, vec[1], errstr, erroffset); |
| 424 | return -1; |
| 425 | } |
| 426 | npl->s = xrealloc(npl->s, (npl->n + 1) * sizeof (struct namepart)); |
| 427 | npl->s[npl->n].part = xstrdup(vec[0]); |
| 428 | npl->s[npl->n].re = re; |
| 429 | npl->s[npl->n].res = xstrdup(vec[1]); |
| 430 | npl->s[npl->n].replace = xstrdup(vec[2]); |
| 431 | npl->s[npl->n].context = xstrdup(vec[3]); |
| 432 | npl->s[npl->n].reflags = reflags; |
| 433 | ++npl->n; |
| 434 | /* XXX a bit of a bodge; relies on there being very few parts. */ |
| 435 | for(n = 0; (n < cs->config->nparts |
| 436 | && strcmp(cs->config->parts[n], vec[0])); ++n) |
| 437 | ; |
| 438 | if(n >= cs->config->nparts) { |
| 439 | cs->config->parts = xrealloc(cs->config->parts, |
| 440 | (cs->config->nparts + 1) * sizeof (char *)); |
| 441 | cs->config->parts[cs->config->nparts++] = xstrdup(vec[0]); |
| 442 | } |
| 443 | return 0; |
| 444 | } |
| 445 | |
| 446 | static int set_transform(const struct config_state *cs, |
| 447 | const struct conf *whoami, |
| 448 | int nvec, char **vec) { |
| 449 | struct transformlist *tl = ADDRESS(cs->config, struct transformlist); |
| 450 | pcre *re; |
| 451 | unsigned reflags; |
| 452 | const char *errstr; |
| 453 | int erroffset; |
| 454 | |
| 455 | if(nvec < 3) { |
| 456 | disorder_error(0, "%s:%d: transform needs at least 3 arguments", |
| 457 | cs->path, cs->line); |
| 458 | return -1; |
| 459 | } |
| 460 | if(nvec > 5) { |
| 461 | disorder_error(0, "%s:%d: transform needs at most 5 arguments", |
| 462 | cs->path, cs->line); |
| 463 | return -1; |
| 464 | } |
| 465 | reflags = (nvec >= 5 ? regsub_flags(vec[4]) : 0); |
| 466 | if(!(re = pcre_compile(vec[1], |
| 467 | PCRE_UTF8 |
| 468 | |regsub_compile_options(reflags), |
| 469 | &errstr, &erroffset, 0))) { |
| 470 | disorder_error(0, "%s:%d: compiling regexp /%s/: %s (offset %d)", |
| 471 | cs->path, cs->line, vec[1], errstr, erroffset); |
| 472 | return -1; |
| 473 | } |
| 474 | tl->t = xrealloc(tl->t, (tl->n + 1) * sizeof (struct namepart)); |
| 475 | tl->t[tl->n].type = xstrdup(vec[0]); |
| 476 | tl->t[tl->n].context = xstrdup(vec[3] ? vec[3] : "*"); |
| 477 | tl->t[tl->n].re = re; |
| 478 | tl->t[tl->n].replace = xstrdup(vec[2]); |
| 479 | tl->t[tl->n].flags = reflags; |
| 480 | ++tl->n; |
| 481 | return 0; |
| 482 | } |
| 483 | |
| 484 | static int set_rights(const struct config_state *cs, |
| 485 | const struct conf *whoami, |
| 486 | int nvec, char **vec) { |
| 487 | if(nvec != 1) { |
| 488 | disorder_error(0, "%s:%d: '%s' requires one argument", |
| 489 | cs->path, cs->line, whoami->name); |
| 490 | return -1; |
| 491 | } |
| 492 | if(parse_rights(vec[0], 0, 1)) { |
| 493 | disorder_error(0, "%s:%d: invalid rights string '%s'", |
| 494 | cs->path, cs->line, vec[0]); |
| 495 | return -1; |
| 496 | } |
| 497 | return set_string(cs, whoami, nvec, vec); |
| 498 | } |
| 499 | |
| 500 | static int set_netaddress(const struct config_state *cs, |
| 501 | const struct conf *whoami, |
| 502 | int nvec, char **vec) { |
| 503 | struct netaddress *na = ADDRESS(cs->config, struct netaddress); |
| 504 | |
| 505 | if(netaddress_parse(na, nvec, vec)) { |
| 506 | disorder_error(0, "%s:%d: invalid network address", cs->path, cs->line); |
| 507 | return -1; |
| 508 | } |
| 509 | return 0; |
| 510 | } |
| 511 | |
| 512 | /* free functions */ |
| 513 | |
| 514 | static void free_none(struct config attribute((unused)) *c, |
| 515 | const struct conf attribute((unused)) *whoami) { |
| 516 | } |
| 517 | |
| 518 | static void free_string(struct config *c, |
| 519 | const struct conf *whoami) { |
| 520 | xfree(VALUE(c, char *)); |
| 521 | VALUE(c, char *) = 0; |
| 522 | } |
| 523 | |
| 524 | static void free_stringlist(struct config *c, |
| 525 | const struct conf *whoami) { |
| 526 | int n; |
| 527 | struct stringlist *sl = ADDRESS(c, struct stringlist); |
| 528 | |
| 529 | for(n = 0; n < sl->n; ++n) |
| 530 | xfree(sl->s[n]); |
| 531 | xfree(sl->s); |
| 532 | } |
| 533 | |
| 534 | static void free_stringlistlist(struct config *c, |
| 535 | const struct conf *whoami) { |
| 536 | int n, m; |
| 537 | struct stringlistlist *sll = ADDRESS(c, struct stringlistlist); |
| 538 | struct stringlist *sl; |
| 539 | |
| 540 | for(n = 0; n < sll->n; ++n) { |
| 541 | sl = &sll->s[n]; |
| 542 | for(m = 0; m < sl->n; ++m) |
| 543 | xfree(sl->s[m]); |
| 544 | xfree(sl->s); |
| 545 | } |
| 546 | xfree(sll->s); |
| 547 | } |
| 548 | |
| 549 | static void free_collectionlist(struct config *c, |
| 550 | const struct conf *whoami) { |
| 551 | struct collectionlist *cll = ADDRESS(c, struct collectionlist); |
| 552 | struct collection *cl; |
| 553 | int n; |
| 554 | |
| 555 | for(n = 0; n < cll->n; ++n) { |
| 556 | cl = &cll->s[n]; |
| 557 | xfree(cl->module); |
| 558 | xfree(cl->encoding); |
| 559 | xfree(cl->root); |
| 560 | } |
| 561 | xfree(cll->s); |
| 562 | } |
| 563 | |
| 564 | static void free_namepartlist(struct config *c, |
| 565 | const struct conf *whoami) { |
| 566 | struct namepartlist *npl = ADDRESS(c, struct namepartlist); |
| 567 | struct namepart *np; |
| 568 | int n; |
| 569 | |
| 570 | for(n = 0; n < npl->n; ++n) { |
| 571 | np = &npl->s[n]; |
| 572 | xfree(np->part); |
| 573 | pcre_free(np->re); /* ...whatever pcre_free is set to. */ |
| 574 | xfree(np->res); |
| 575 | xfree(np->replace); |
| 576 | xfree(np->context); |
| 577 | } |
| 578 | xfree(npl->s); |
| 579 | } |
| 580 | |
| 581 | static void free_transformlist(struct config *c, |
| 582 | const struct conf *whoami) { |
| 583 | struct transformlist *tl = ADDRESS(c, struct transformlist); |
| 584 | struct transform *t; |
| 585 | int n; |
| 586 | |
| 587 | for(n = 0; n < tl->n; ++n) { |
| 588 | t = &tl->t[n]; |
| 589 | xfree(t->type); |
| 590 | pcre_free(t->re); /* ...whatever pcre_free is set to. */ |
| 591 | xfree(t->replace); |
| 592 | xfree(t->context); |
| 593 | } |
| 594 | xfree(tl->t); |
| 595 | } |
| 596 | |
| 597 | static void free_netaddress(struct config *c, |
| 598 | const struct conf *whoami) { |
| 599 | struct netaddress *na = ADDRESS(c, struct netaddress); |
| 600 | |
| 601 | xfree(na->address); |
| 602 | } |
| 603 | |
| 604 | /* configuration types */ |
| 605 | |
| 606 | static const struct conftype |
| 607 | type_signal = { set_signal, free_none }, |
| 608 | type_collections = { set_collections, free_collectionlist }, |
| 609 | type_boolean = { set_boolean, free_none }, |
| 610 | type_string = { set_string, free_string }, |
| 611 | type_stringlist = { set_stringlist, free_stringlist }, |
| 612 | type_integer = { set_integer, free_none }, |
| 613 | type_stringlist_accum = { set_stringlist_accum, free_stringlistlist }, |
| 614 | type_string_accum = { set_string_accum, free_stringlist }, |
| 615 | type_sample_format = { set_sample_format, free_none }, |
| 616 | type_namepart = { set_namepart, free_namepartlist }, |
| 617 | type_transform = { set_transform, free_transformlist }, |
| 618 | type_netaddress = { set_netaddress, free_netaddress }, |
| 619 | type_rights = { set_rights, free_string }; |
| 620 | |
| 621 | /* specific validation routine */ |
| 622 | |
| 623 | /** @brief Perform a test on a filename |
| 624 | * @param test Test function to call on mode bits |
| 625 | * @param what Type of file sought |
| 626 | * |
| 627 | * If @p test returns 0 then the file is not a @p what and an error |
| 628 | * is reported and -1 is returned. |
| 629 | */ |
| 630 | #define VALIDATE_FILE(test, what) do { \ |
| 631 | struct stat sb; \ |
| 632 | int n; \ |
| 633 | \ |
| 634 | for(n = 0; n < nvec; ++n) { \ |
| 635 | if(stat(vec[n], &sb) < 0) { \ |
| 636 | disorder_error(errno, "%s:%d: %s", \ |
| 637 | cs->path, cs->line, vec[n]); \ |
| 638 | return -1; \ |
| 639 | } \ |
| 640 | if(!test(sb.st_mode)) { \ |
| 641 | disorder_error(0, "%s:%d: %s is not a %s", \ |
| 642 | cs->path, cs->line, vec[n], what); \ |
| 643 | return -1; \ |
| 644 | } \ |
| 645 | } \ |
| 646 | } while(0) |
| 647 | |
| 648 | /** @brief Validate an absolute path |
| 649 | * @param cs Configuration state |
| 650 | * @param nvec Length of (proposed) new value |
| 651 | * @param vec Elements of new value |
| 652 | * @return 0 on success, non-0 on error |
| 653 | */ |
| 654 | static int validate_isabspath(const struct config_state *cs, |
| 655 | int nvec, char **vec) { |
| 656 | int n; |
| 657 | |
| 658 | for(n = 0; n < nvec; ++n) |
| 659 | if(vec[n][0] != '/') { |
| 660 | disorder_error(errno, "%s:%d: %s: not an absolute path", |
| 661 | cs->path, cs->line, vec[n]); |
| 662 | return -1; |
| 663 | } |
| 664 | return 0; |
| 665 | } |
| 666 | |
| 667 | /** @brief Validate an existing directory |
| 668 | * @param cs Configuration state |
| 669 | * @param nvec Length of (proposed) new value |
| 670 | * @param vec Elements of new value |
| 671 | * @return 0 on success, non-0 on error |
| 672 | */ |
| 673 | static int validate_isdir(const struct config_state *cs, |
| 674 | int nvec, char **vec) { |
| 675 | VALIDATE_FILE(S_ISDIR, "directory"); |
| 676 | return 0; |
| 677 | } |
| 678 | |
| 679 | /** @brief Validate an existing regular file |
| 680 | * @param cs Configuration state |
| 681 | * @param nvec Length of (proposed) new value |
| 682 | * @param vec Elements of new value |
| 683 | * @return 0 on success, non-0 on error |
| 684 | */ |
| 685 | static int validate_isreg(const struct config_state *cs, |
| 686 | int nvec, char **vec) { |
| 687 | VALIDATE_FILE(S_ISREG, "regular file"); |
| 688 | return 0; |
| 689 | } |
| 690 | |
| 691 | /** @brief Validate a player pattern |
| 692 | * @param cs Configuration state |
| 693 | * @param nvec Length of (proposed) new value |
| 694 | * @param vec Elements of new value |
| 695 | * @return 0 on success, non-0 on error |
| 696 | */ |
| 697 | static int validate_player(const struct config_state *cs, |
| 698 | int nvec, |
| 699 | char attribute((unused)) **vec) { |
| 700 | if(nvec && nvec < 2) { |
| 701 | disorder_error(0, "%s:%d: should be at least 'player PATTERN MODULE'", |
| 702 | cs->path, cs->line); |
| 703 | return -1; |
| 704 | } |
| 705 | return 0; |
| 706 | } |
| 707 | |
| 708 | /** @brief Validate a track length pattern |
| 709 | * @param cs Configuration state |
| 710 | * @param nvec Length of (proposed) new value |
| 711 | * @param vec Elements of new value |
| 712 | * @return 0 on success, non-0 on error |
| 713 | */ |
| 714 | static int validate_tracklength(const struct config_state *cs, |
| 715 | int nvec, |
| 716 | char attribute((unused)) **vec) { |
| 717 | if(nvec && nvec < 2) { |
| 718 | disorder_error(0, "%s:%d: should be at least 'tracklength PATTERN MODULE'", |
| 719 | cs->path, cs->line); |
| 720 | return -1; |
| 721 | } |
| 722 | return 0; |
| 723 | } |
| 724 | |
| 725 | /** @brief Validate a non-negative (@c long) integer |
| 726 | * @param cs Configuration state |
| 727 | * @param nvec Length of (proposed) new value |
| 728 | * @param vec Elements of new value |
| 729 | * @return 0 on success, non-0 on error |
| 730 | */ |
| 731 | static int validate_non_negative(const struct config_state *cs, |
| 732 | int nvec, char **vec) { |
| 733 | long n; |
| 734 | |
| 735 | if(nvec < 1) { |
| 736 | disorder_error(0, "%s:%d: missing argument", cs->path, cs->line); |
| 737 | return -1; |
| 738 | } |
| 739 | if(nvec > 1) { |
| 740 | disorder_error(0, "%s:%d: too many arguments", cs->path, cs->line); |
| 741 | return -1; |
| 742 | } |
| 743 | if(xstrtol(&n, vec[0], 0, 0)) { |
| 744 | disorder_error(0, "%s:%d: %s", cs->path, cs->line, strerror(errno)); |
| 745 | return -1; |
| 746 | } |
| 747 | if(n < 0) { |
| 748 | disorder_error(0, "%s:%d: must not be negative", cs->path, cs->line); |
| 749 | return -1; |
| 750 | } |
| 751 | return 0; |
| 752 | } |
| 753 | |
| 754 | /** @brief Validate a positive (@c long) integer |
| 755 | * @param cs Configuration state |
| 756 | * @param nvec Length of (proposed) new value |
| 757 | * @param vec Elements of new value |
| 758 | * @return 0 on success, non-0 on error |
| 759 | */ |
| 760 | static int validate_positive(const struct config_state *cs, |
| 761 | int nvec, char **vec) { |
| 762 | long n; |
| 763 | |
| 764 | if(nvec < 1) { |
| 765 | disorder_error(0, "%s:%d: missing argument", cs->path, cs->line); |
| 766 | return -1; |
| 767 | } |
| 768 | if(nvec > 1) { |
| 769 | disorder_error(0, "%s:%d: too many arguments", cs->path, cs->line); |
| 770 | return -1; |
| 771 | } |
| 772 | if(xstrtol(&n, vec[0], 0, 0)) { |
| 773 | disorder_error(0, "%s:%d: %s", cs->path, cs->line, strerror(errno)); |
| 774 | return -1; |
| 775 | } |
| 776 | if(n <= 0) { |
| 777 | disorder_error(0, "%s:%d: must be positive", cs->path, cs->line); |
| 778 | return -1; |
| 779 | } |
| 780 | return 0; |
| 781 | } |
| 782 | |
| 783 | /** @brief Validate a system username |
| 784 | * @param cs Configuration state |
| 785 | * @param nvec Length of (proposed) new value |
| 786 | * @param vec Elements of new value |
| 787 | * @return 0 on success, non-0 on error |
| 788 | */ |
| 789 | static int validate_isauser(const struct config_state *cs, |
| 790 | int attribute((unused)) nvec, |
| 791 | char **vec) { |
| 792 | if(!getpwnam(vec[0])) { |
| 793 | disorder_error(0, "%s:%d: no such user as '%s'", cs->path, cs->line, vec[0]); |
| 794 | return -1; |
| 795 | } |
| 796 | return 0; |
| 797 | } |
| 798 | |
| 799 | /** @brief Validate a sample format string |
| 800 | * @param cs Configuration state |
| 801 | * @param nvec Length of (proposed) new value |
| 802 | * @param vec Elements of new value |
| 803 | * @return 0 on success, non-0 on error |
| 804 | */ |
| 805 | static int validate_sample_format(const struct config_state *cs, |
| 806 | int attribute((unused)) nvec, |
| 807 | char **vec) { |
| 808 | return parse_sample_format(cs, 0, nvec, vec); |
| 809 | } |
| 810 | |
| 811 | /** @brief Validate anything |
| 812 | * @param cs Configuration state |
| 813 | * @param nvec Length of (proposed) new value |
| 814 | * @param vec Elements of new value |
| 815 | * @return 0 |
| 816 | */ |
| 817 | static int validate_any(const struct config_state attribute((unused)) *cs, |
| 818 | int attribute((unused)) nvec, |
| 819 | char attribute((unused)) **vec) { |
| 820 | return 0; |
| 821 | } |
| 822 | |
| 823 | /** @brief Validate a URL |
| 824 | * @param cs Configuration state |
| 825 | * @param nvec Length of (proposed) new value |
| 826 | * @param vec Elements of new value |
| 827 | * @return 0 on success, non-0 on error |
| 828 | * |
| 829 | * Rather cursory. |
| 830 | */ |
| 831 | static int validate_url(const struct config_state attribute((unused)) *cs, |
| 832 | int attribute((unused)) nvec, |
| 833 | char **vec) { |
| 834 | const char *s; |
| 835 | int n; |
| 836 | /* absoluteURI = scheme ":" ( hier_part | opaque_part ) |
| 837 | scheme = alpha *( alpha | digit | "+" | "-" | "." ) */ |
| 838 | s = vec[0]; |
| 839 | n = strspn(s, ("abcdefghijklmnopqrstuvwxyz" |
| 840 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" |
| 841 | "0123456789")); |
| 842 | if(s[n] != ':') { |
| 843 | disorder_error(0, "%s:%d: invalid url '%s'", cs->path, cs->line, vec[0]); |
| 844 | return -1; |
| 845 | } |
| 846 | if(!strncmp(s, "http:", 5) |
| 847 | || !strncmp(s, "https:", 6)) { |
| 848 | s += n + 1; |
| 849 | /* we only do a rather cursory check */ |
| 850 | if(strncmp(s, "//", 2)) { |
| 851 | disorder_error(0, "%s:%d: invalid url '%s'", cs->path, cs->line, vec[0]); |
| 852 | return -1; |
| 853 | } |
| 854 | } |
| 855 | return 0; |
| 856 | } |
| 857 | |
| 858 | /** @brief Validate an alias pattern |
| 859 | * @param cs Configuration state |
| 860 | * @param nvec Length of (proposed) new value |
| 861 | * @param vec Elements of new value |
| 862 | * @return 0 on success, non-0 on error |
| 863 | */ |
| 864 | static int validate_alias(const struct config_state *cs, |
| 865 | int nvec, |
| 866 | char **vec) { |
| 867 | const char *s; |
| 868 | int in_brackets = 0, c; |
| 869 | |
| 870 | if(nvec < 1) { |
| 871 | disorder_error(0, "%s:%d: missing argument", cs->path, cs->line); |
| 872 | return -1; |
| 873 | } |
| 874 | if(nvec > 1) { |
| 875 | disorder_error(0, "%s:%d: too many arguments", cs->path, cs->line); |
| 876 | return -1; |
| 877 | } |
| 878 | s = vec[0]; |
| 879 | while((c = (unsigned char)*s++)) { |
| 880 | if(in_brackets) { |
| 881 | if(c == '}') |
| 882 | in_brackets = 0; |
| 883 | else if(!isalnum(c)) { |
| 884 | disorder_error(0, "%s:%d: invalid part name in alias expansion in '%s'", |
| 885 | cs->path, cs->line, vec[0]); |
| 886 | return -1; |
| 887 | } |
| 888 | } else { |
| 889 | if(c == '{') { |
| 890 | in_brackets = 1; |
| 891 | if(*s == '/') |
| 892 | ++s; |
| 893 | } else if(c == '\\') { |
| 894 | if(!(c = (unsigned char)*s++)) { |
| 895 | disorder_error(0, "%s:%d: unterminated escape in alias expansion in '%s'", |
| 896 | cs->path, cs->line, vec[0]); |
| 897 | return -1; |
| 898 | } else if(c != '\\' && c != '{') { |
| 899 | disorder_error(0, "%s:%d: invalid escape in alias expansion in '%s'", |
| 900 | cs->path, cs->line, vec[0]); |
| 901 | return -1; |
| 902 | } |
| 903 | } |
| 904 | } |
| 905 | ++s; |
| 906 | } |
| 907 | if(in_brackets) { |
| 908 | disorder_error(0, |
| 909 | "%s:%d: unterminated part name in alias expansion in '%s'", |
| 910 | cs->path, cs->line, vec[0]); |
| 911 | return -1; |
| 912 | } |
| 913 | return 0; |
| 914 | } |
| 915 | |
| 916 | /** @brief Validate a hash algorithm name |
| 917 | * @param cs Configuration state |
| 918 | * @param nvec Length of (proposed) new value |
| 919 | * @param vec Elements of new value |
| 920 | * @return 0 on success, non-0 on error |
| 921 | */ |
| 922 | static int validate_algo(const struct config_state attribute((unused)) *cs, |
| 923 | int nvec, |
| 924 | char **vec) { |
| 925 | if(nvec != 1) { |
| 926 | disorder_error(0, "%s:%d: invalid algorithm specification", cs->path, cs->line); |
| 927 | return -1; |
| 928 | } |
| 929 | if(!valid_authhash(vec[0])) { |
| 930 | disorder_error(0, "%s:%d: unsuported algorithm '%s'", cs->path, cs->line, vec[0]); |
| 931 | return -1; |
| 932 | } |
| 933 | return 0; |
| 934 | } |
| 935 | |
| 936 | /** @brief Validate a playback backend name |
| 937 | * @param cs Configuration state |
| 938 | * @param nvec Length of (proposed) new value |
| 939 | * @param vec Elements of new value |
| 940 | * @return 0 on success, non-0 on error |
| 941 | */ |
| 942 | static int validate_backend(const struct config_state attribute((unused)) *cs, |
| 943 | int nvec, |
| 944 | char **vec) { |
| 945 | int n; |
| 946 | if(nvec != 1) { |
| 947 | disorder_error(0, "%s:%d: invalid sound API specification", cs->path, cs->line); |
| 948 | return -1; |
| 949 | } |
| 950 | if(!strcmp(vec[0], "network")) { |
| 951 | disorder_error(0, "'api network' is deprecated; use 'api rtp'"); |
| 952 | return 0; |
| 953 | } |
| 954 | if(config_uaudio_apis) { |
| 955 | for(n = 0; config_uaudio_apis[n]; ++n) |
| 956 | if(!strcmp(vec[0], config_uaudio_apis[n]->name)) |
| 957 | return 0; |
| 958 | disorder_error(0, "%s:%d: unrecognized sound API '%s'", cs->path, cs->line, vec[0]); |
| 959 | return -1; |
| 960 | } |
| 961 | /* In non-server processes we have no idea what's valid */ |
| 962 | return 0; |
| 963 | } |
| 964 | |
| 965 | /** @brief Validate a pause mode string |
| 966 | * @param cs Configuration state |
| 967 | * @param nvec Length of (proposed) new value |
| 968 | * @param vec Elements of new value |
| 969 | * @return 0 on success, non-0 on error |
| 970 | */ |
| 971 | static int validate_pausemode(const struct config_state attribute((unused)) *cs, |
| 972 | int nvec, |
| 973 | char **vec) { |
| 974 | if(nvec == 1 && (!strcmp(vec[0], "silence") || !strcmp(vec[0], "suspend"))) |
| 975 | return 0; |
| 976 | disorder_error(0, "%s:%d: invalid pause mode", cs->path, cs->line); |
| 977 | return -1; |
| 978 | } |
| 979 | |
| 980 | /** @brief Validate a destination network address |
| 981 | * @param cs Configuration state |
| 982 | * @param nvec Length of (proposed) new value |
| 983 | * @param vec Elements of new value |
| 984 | * @return 0 on success, non-0 on error |
| 985 | * |
| 986 | * By a destination address, it is meant that it must not be a wildcard |
| 987 | * address. |
| 988 | */ |
| 989 | static int validate_destaddr(const struct config_state attribute((unused)) *cs, |
| 990 | int nvec, |
| 991 | char **vec) { |
| 992 | struct netaddress na[1]; |
| 993 | |
| 994 | if(netaddress_parse(na, nvec, vec)) { |
| 995 | disorder_error(0, "%s:%d: invalid network address", cs->path, cs->line); |
| 996 | return -1; |
| 997 | } |
| 998 | if(!na->address) { |
| 999 | disorder_error(0, "%s:%d: destination address required", cs->path, cs->line); |
| 1000 | return -1; |
| 1001 | } |
| 1002 | xfree(na->address); |
| 1003 | return 0; |
| 1004 | } |
| 1005 | |
| 1006 | /** @brief Item name and and offset */ |
| 1007 | #define C(x) #x, offsetof(struct config, x) |
| 1008 | /** @brief Item name and and offset */ |
| 1009 | #define C2(x,y) #x, offsetof(struct config, y) |
| 1010 | |
| 1011 | /** @brief All configuration items */ |
| 1012 | static const struct conf conf[] = { |
| 1013 | { C(alias), &type_string, validate_alias }, |
| 1014 | { C(api), &type_string, validate_backend }, |
| 1015 | { C(authorization_algorithm), &type_string, validate_algo }, |
| 1016 | { C(broadcast), &type_netaddress, validate_destaddr }, |
| 1017 | { C(broadcast_from), &type_netaddress, validate_any }, |
| 1018 | { C(channel), &type_string, validate_any }, |
| 1019 | { C(checkpoint_kbyte), &type_integer, validate_non_negative }, |
| 1020 | { C(checkpoint_min), &type_integer, validate_non_negative }, |
| 1021 | { C(collection), &type_collections, validate_any }, |
| 1022 | { C(connect), &type_netaddress, validate_destaddr }, |
| 1023 | { C(cookie_key_lifetime), &type_integer, validate_positive }, |
| 1024 | { C(cookie_login_lifetime), &type_integer, validate_positive }, |
| 1025 | { C(dbversion), &type_integer, validate_positive }, |
| 1026 | { C(default_rights), &type_rights, validate_any }, |
| 1027 | { C(device), &type_string, validate_any }, |
| 1028 | { C(history), &type_integer, validate_positive }, |
| 1029 | { C(home), &type_string, validate_isabspath }, |
| 1030 | { C(listen), &type_netaddress, validate_any }, |
| 1031 | { C(mail_sender), &type_string, validate_any }, |
| 1032 | { C(mixer), &type_string, validate_any }, |
| 1033 | { C(mount_rescan), &type_boolean, validate_any }, |
| 1034 | { C(multicast_loop), &type_boolean, validate_any }, |
| 1035 | { C(multicast_ttl), &type_integer, validate_non_negative }, |
| 1036 | { C(namepart), &type_namepart, validate_any }, |
| 1037 | { C(new_bias), &type_integer, validate_positive }, |
| 1038 | { C(new_bias_age), &type_integer, validate_positive }, |
| 1039 | { C(new_max), &type_integer, validate_positive }, |
| 1040 | { C2(nice, nice_rescan), &type_integer, validate_non_negative }, |
| 1041 | { C(nice_rescan), &type_integer, validate_non_negative }, |
| 1042 | { C(nice_server), &type_integer, validate_any }, |
| 1043 | { C(nice_speaker), &type_integer, validate_any }, |
| 1044 | { C(noticed_history), &type_integer, validate_positive }, |
| 1045 | { C(password), &type_string, validate_any }, |
| 1046 | { C(pause_mode), &type_string, validate_pausemode }, |
| 1047 | { C(player), &type_stringlist_accum, validate_player }, |
| 1048 | { C(playlist_lock_timeout), &type_integer, validate_positive }, |
| 1049 | { C(playlist_max) , &type_integer, validate_positive }, |
| 1050 | { C(plugins), &type_string_accum, validate_isdir }, |
| 1051 | { C(queue_pad), &type_integer, validate_positive }, |
| 1052 | { C(refresh), &type_integer, validate_positive }, |
| 1053 | { C(refresh_min), &type_integer, validate_non_negative }, |
| 1054 | { C(reminder_interval), &type_integer, validate_positive }, |
| 1055 | { C(remote_userman), &type_boolean, validate_any }, |
| 1056 | { C(replay_min), &type_integer, validate_non_negative }, |
| 1057 | { C(rtp_delay_threshold), &type_integer, validate_positive }, |
| 1058 | { C(rtp_verbose), &type_boolean, validate_any }, |
| 1059 | { C(sample_format), &type_sample_format, validate_sample_format }, |
| 1060 | { C(scratch), &type_string_accum, validate_isreg }, |
| 1061 | { C(sendmail), &type_string, validate_isabspath }, |
| 1062 | { C(short_display), &type_integer, validate_positive }, |
| 1063 | { C(signal), &type_signal, validate_any }, |
| 1064 | { C(smtp_server), &type_string, validate_any }, |
| 1065 | { C(sox_generation), &type_integer, validate_non_negative }, |
| 1066 | { C2(speaker_backend, api), &type_string, validate_backend }, |
| 1067 | { C(speaker_command), &type_string, validate_any }, |
| 1068 | { C(stopword), &type_string_accum, validate_any }, |
| 1069 | { C(templates), &type_string_accum, validate_isdir }, |
| 1070 | { C(tracklength), &type_stringlist_accum, validate_tracklength }, |
| 1071 | { C(transform), &type_transform, validate_any }, |
| 1072 | { C(url), &type_string, validate_url }, |
| 1073 | { C(user), &type_string, validate_isauser }, |
| 1074 | { C(username), &type_string, validate_any }, |
| 1075 | }; |
| 1076 | |
| 1077 | /** @brief Find a configuration item's definition by key */ |
| 1078 | static const struct conf *find(const char *key) { |
| 1079 | int n; |
| 1080 | |
| 1081 | if((n = TABLE_FIND(conf, name, key)) < 0) |
| 1082 | return 0; |
| 1083 | return &conf[n]; |
| 1084 | } |
| 1085 | |
| 1086 | /** @brief Set a new configuration value |
| 1087 | * @param cs Configuration state |
| 1088 | * @param nvec Length of @p vec |
| 1089 | * @param vec Name and new value |
| 1090 | * @return 0 on success, non-0 on error. |
| 1091 | * |
| 1092 | * @c vec[0] is the name, the rest is the value. |
| 1093 | */ |
| 1094 | static int config_set(const struct config_state *cs, |
| 1095 | int nvec, char **vec) { |
| 1096 | const struct conf *which; |
| 1097 | |
| 1098 | D(("config_set %s", vec[0])); |
| 1099 | if(!(which = find(vec[0]))) { |
| 1100 | disorder_error(0, "%s:%d: unknown configuration key '%s'", |
| 1101 | cs->path, cs->line, vec[0]); |
| 1102 | return -1; |
| 1103 | } |
| 1104 | return (which->validate(cs, nvec - 1, vec + 1) |
| 1105 | || which->type->set(cs, which, nvec - 1, vec + 1)); |
| 1106 | } |
| 1107 | |
| 1108 | /** @brief Set a configuration item from parameters |
| 1109 | * @param cs Configuration state |
| 1110 | * @param which Item to set |
| 1111 | * @param ... Value as strings, terminated by (char *)NULL |
| 1112 | * @return 0 on success, non-0 on error |
| 1113 | */ |
| 1114 | static int config_set_args(const struct config_state *cs, |
| 1115 | const char *which, ...) { |
| 1116 | va_list ap; |
| 1117 | struct vector v[1]; |
| 1118 | char *s; |
| 1119 | |
| 1120 | vector_init(v); |
| 1121 | vector_append(v, (char *)which); |
| 1122 | va_start(ap, which); |
| 1123 | while((s = va_arg(ap, char *))) |
| 1124 | vector_append(v, s); |
| 1125 | va_end(ap); |
| 1126 | vector_terminate(v); |
| 1127 | int rc = config_set(cs, v->nvec, v->vec); |
| 1128 | xfree(v->vec); |
| 1129 | return rc; |
| 1130 | } |
| 1131 | |
| 1132 | /** @brief Error callback used by config_include() |
| 1133 | * @param msg Error message |
| 1134 | * @param u User data (@ref config_state) |
| 1135 | */ |
| 1136 | static void config_error(const char *msg, void *u) { |
| 1137 | const struct config_state *cs = u; |
| 1138 | |
| 1139 | disorder_error(0, "%s:%d: %s", cs->path, cs->line, msg); |
| 1140 | } |
| 1141 | |
| 1142 | /** @brief Include a file by name |
| 1143 | * @param c Configuration to update |
| 1144 | * @param path Path to read |
| 1145 | * @return 0 on success, non-0 on error |
| 1146 | */ |
| 1147 | static int config_include(struct config *c, const char *path) { |
| 1148 | FILE *fp; |
| 1149 | char *buffer, *inputbuffer, **vec; |
| 1150 | int n, ret = 0; |
| 1151 | struct config_state cs; |
| 1152 | |
| 1153 | cs.path = path; |
| 1154 | cs.line = 0; |
| 1155 | cs.config = c; |
| 1156 | D(("%s: reading configuration", path)); |
| 1157 | if(!(fp = fopen(path, "r"))) { |
| 1158 | disorder_error(errno, "error opening %s", path); |
| 1159 | return -1; |
| 1160 | } |
| 1161 | while(!inputline(path, fp, &inputbuffer, '\n')) { |
| 1162 | ++cs.line; |
| 1163 | if(!(buffer = mb2utf8(inputbuffer))) { |
| 1164 | disorder_error(errno, "%s:%d: cannot convert to UTF-8", cs.path, cs.line); |
| 1165 | ret = -1; |
| 1166 | xfree(inputbuffer); |
| 1167 | continue; |
| 1168 | } |
| 1169 | xfree(inputbuffer); |
| 1170 | if(!(vec = split(buffer, &n, SPLIT_COMMENTS|SPLIT_QUOTES, |
| 1171 | config_error, &cs))) { |
| 1172 | ret = -1; |
| 1173 | xfree(buffer); |
| 1174 | continue; |
| 1175 | } |
| 1176 | if(n) { |
| 1177 | /* 'include' is special-cased */ |
| 1178 | if(!strcmp(vec[0], "include")) { |
| 1179 | if(n != 2) { |
| 1180 | disorder_error(0, "%s:%d: must be 'include PATH'", cs.path, cs.line); |
| 1181 | ret = -1; |
| 1182 | } else |
| 1183 | config_include(c, vec[1]); |
| 1184 | } else |
| 1185 | ret |= config_set(&cs, n, vec); |
| 1186 | } |
| 1187 | for(n = 0; vec[n]; ++n) xfree(vec[n]); |
| 1188 | xfree(vec); |
| 1189 | xfree(buffer); |
| 1190 | } |
| 1191 | if(ferror(fp)) { |
| 1192 | disorder_error(errno, "error reading %s", path); |
| 1193 | ret = -1; |
| 1194 | } |
| 1195 | fclose(fp); |
| 1196 | return ret; |
| 1197 | } |
| 1198 | |
| 1199 | /** @brief Default stopword setting */ |
| 1200 | static const char *const default_stopwords[] = { |
| 1201 | "stopword", |
| 1202 | |
| 1203 | "01", |
| 1204 | "02", |
| 1205 | "03", |
| 1206 | "04", |
| 1207 | "05", |
| 1208 | "06", |
| 1209 | "07", |
| 1210 | "08", |
| 1211 | "09", |
| 1212 | "1", |
| 1213 | "10", |
| 1214 | "11", |
| 1215 | "12", |
| 1216 | "13", |
| 1217 | "14", |
| 1218 | "15", |
| 1219 | "16", |
| 1220 | "17", |
| 1221 | "18", |
| 1222 | "19", |
| 1223 | "2", |
| 1224 | "20", |
| 1225 | "21", |
| 1226 | "22", |
| 1227 | "23", |
| 1228 | "24", |
| 1229 | "25", |
| 1230 | "26", |
| 1231 | "27", |
| 1232 | "28", |
| 1233 | "29", |
| 1234 | "3", |
| 1235 | "30", |
| 1236 | "4", |
| 1237 | "5", |
| 1238 | "6", |
| 1239 | "7", |
| 1240 | "8", |
| 1241 | "9", |
| 1242 | "a", |
| 1243 | "am", |
| 1244 | "an", |
| 1245 | "and", |
| 1246 | "as", |
| 1247 | "for", |
| 1248 | "i", |
| 1249 | "im", |
| 1250 | "in", |
| 1251 | "is", |
| 1252 | "of", |
| 1253 | "on", |
| 1254 | "the", |
| 1255 | "to", |
| 1256 | "too", |
| 1257 | "we", |
| 1258 | }; |
| 1259 | #define NDEFAULT_STOPWORDS (sizeof default_stopwords / sizeof *default_stopwords) |
| 1260 | |
| 1261 | /** @brief Default player patterns */ |
| 1262 | static const char *const default_players[] = { |
| 1263 | "*.ogg", |
| 1264 | "*.flac", |
| 1265 | "*.mp3", |
| 1266 | "*.wav", |
| 1267 | }; |
| 1268 | #define NDEFAULT_PLAYERS (sizeof default_players / sizeof *default_players) |
| 1269 | |
| 1270 | /** @brief Make a new default configuration |
| 1271 | * @return New configuration |
| 1272 | */ |
| 1273 | static struct config *config_default(void) { |
| 1274 | struct config *c = xmalloc(sizeof *c); |
| 1275 | const char *logname; |
| 1276 | struct passwd *pw; |
| 1277 | struct config_state cs; |
| 1278 | size_t n; |
| 1279 | |
| 1280 | cs.path = "<internal>"; |
| 1281 | cs.line = 0; |
| 1282 | cs.config = c; |
| 1283 | /* Strings had better be xstrdup'd as they will get freed at some point. */ |
| 1284 | c->history = 60; |
| 1285 | c->home = xstrdup(pkgstatedir); |
| 1286 | if(!(pw = getpwuid(getuid()))) |
| 1287 | disorder_fatal(0, "cannot determine our username"); |
| 1288 | logname = pw->pw_name; |
| 1289 | c->username = xstrdup(logname); |
| 1290 | c->refresh = 15; |
| 1291 | c->refresh_min = 1; |
| 1292 | c->signal = SIGKILL; |
| 1293 | c->alias = xstrdup("{/artist}{/album}{/title}{ext}"); |
| 1294 | c->device = xstrdup("default"); |
| 1295 | c->nice_rescan = 10; |
| 1296 | c->speaker_command = 0; |
| 1297 | c->sample_format.bits = 16; |
| 1298 | c->sample_format.rate = 44100; |
| 1299 | c->sample_format.channels = 2; |
| 1300 | c->sample_format.endian = ENDIAN_NATIVE; |
| 1301 | c->queue_pad = 10; |
| 1302 | c->replay_min = 8 * 3600; |
| 1303 | c->api = NULL; |
| 1304 | c->multicast_ttl = 1; |
| 1305 | c->multicast_loop = 1; |
| 1306 | c->authorization_algorithm = xstrdup("sha1"); |
| 1307 | c->noticed_history = 31; |
| 1308 | c->short_display = 32; |
| 1309 | c->mixer = 0; |
| 1310 | c->channel = 0; |
| 1311 | c->dbversion = 2; |
| 1312 | c->cookie_login_lifetime = 86400; |
| 1313 | c->cookie_key_lifetime = 86400 * 7; |
| 1314 | if(sendmail_binary[0] && strcmp(sendmail_binary, "none")) |
| 1315 | c->sendmail = xstrdup(sendmail_binary); |
| 1316 | c->smtp_server = xstrdup("127.0.0.1"); |
| 1317 | c->new_max = 100; |
| 1318 | c->reminder_interval = 600; /* 10m */ |
| 1319 | c->new_bias_age = 7 * 86400; /* 1 week */ |
| 1320 | c->new_bias = 4500000; /* 50 times the base weight */ |
| 1321 | c->sox_generation = DEFAULT_SOX_GENERATION; |
| 1322 | c->playlist_max = INT_MAX; /* effectively no limit */ |
| 1323 | c->playlist_lock_timeout = 10; /* 10s */ |
| 1324 | c->mount_rescan = 1; |
| 1325 | /* Default stopwords */ |
| 1326 | if(config_set(&cs, (int)NDEFAULT_STOPWORDS, (char **)default_stopwords)) |
| 1327 | exit(1); |
| 1328 | /* Default player configuration */ |
| 1329 | for(n = 0; n < NDEFAULT_PLAYERS; ++n) { |
| 1330 | if(config_set_args(&cs, "player", |
| 1331 | default_players[n], "execraw", "disorder-decode", (char *)0)) |
| 1332 | exit(1); |
| 1333 | if(config_set_args(&cs, "tracklength", |
| 1334 | default_players[n], "disorder-tracklength", (char *)0)) |
| 1335 | exit(1); |
| 1336 | } |
| 1337 | c->broadcast.af = -1; |
| 1338 | c->broadcast_from.af = -1; |
| 1339 | c->listen.af = -1; |
| 1340 | c->connect.af = -1; |
| 1341 | return c; |
| 1342 | } |
| 1343 | |
| 1344 | /** @brief Construct a filename |
| 1345 | * @param c Configuration |
| 1346 | * @param name Base filename |
| 1347 | * @return Full filename |
| 1348 | * |
| 1349 | * Usually use config_get_file() instead. |
| 1350 | */ |
| 1351 | char *config_get_file2(struct config *c, const char *name) { |
| 1352 | char *s; |
| 1353 | |
| 1354 | byte_xasprintf(&s, "%s/%s", c->home, name); |
| 1355 | return s; |
| 1356 | } |
| 1357 | |
| 1358 | /** @brief Set the default configuration file */ |
| 1359 | static void set_configfile(void) { |
| 1360 | if(!configfile) |
| 1361 | byte_xasprintf(&configfile, "%s/config", pkgconfdir); |
| 1362 | } |
| 1363 | |
| 1364 | /** @brief Free a configuration object |
| 1365 | * @param c Configuration to free |
| 1366 | * |
| 1367 | * @p c is indeterminate after this function is called. |
| 1368 | */ |
| 1369 | void config_free(struct config *c) { |
| 1370 | int n; |
| 1371 | |
| 1372 | if(c) { |
| 1373 | for(n = 0; n < (int)(sizeof conf / sizeof *conf); ++n) |
| 1374 | conf[n].type->free(c, &conf[n]); |
| 1375 | for(n = 0; n < c->nparts; ++n) |
| 1376 | xfree(c->parts[n]); |
| 1377 | xfree(c->parts); |
| 1378 | xfree(c); |
| 1379 | } |
| 1380 | } |
| 1381 | |
| 1382 | /** @brief Set post-parse defaults |
| 1383 | * @param c Configuration to update |
| 1384 | * @param server True when running in the server |
| 1385 | * |
| 1386 | * If @p server is set then certain parts of the configuration are more |
| 1387 | * strictly validated. |
| 1388 | */ |
| 1389 | static void config_postdefaults(struct config *c, |
| 1390 | int server) { |
| 1391 | struct config_state cs; |
| 1392 | const struct conf *whoami; |
| 1393 | int n; |
| 1394 | |
| 1395 | static const char *namepart[][4] = { |
| 1396 | { "title", "/([0-9]+ *[-:]? *)?([^/]+)\\.[a-zA-Z0-9]+$", "$2", "display" }, |
| 1397 | { "title", "/([^/]+)\\.[a-zA-Z0-9]+$", "$1", "sort" }, |
| 1398 | { "album", "/([^/]+)/[^/]+$", "$1", "*" }, |
| 1399 | { "artist", "/([^/]+)/[^/]+/[^/]+$", "$1", "*" }, |
| 1400 | { "ext", "(\\.[a-zA-Z0-9]+)$", "$1", "*" }, |
| 1401 | }; |
| 1402 | #define NNAMEPART (int)(sizeof namepart / sizeof *namepart) |
| 1403 | |
| 1404 | static const char *transform[][5] = { |
| 1405 | { "track", "^.*/([0-9]+ *[-:]? *)?([^/]+)\\.[a-zA-Z0-9]+$", "$2", "display", "" }, |
| 1406 | { "track", "^.*/([^/]+)\\.[a-zA-Z0-9]+$", "$1", "sort", "" }, |
| 1407 | { "dir", "^.*/([^/]+)$", "$1", "*", "" }, |
| 1408 | { "dir", "^(the) ([^/]*)", "$2, $1", "sort", "i", }, |
| 1409 | { "dir", "[[:punct:]]", "", "sort", "g", } |
| 1410 | }; |
| 1411 | #define NTRANSFORM (int)(sizeof transform / sizeof *transform) |
| 1412 | |
| 1413 | cs.path = "<internal>"; |
| 1414 | cs.line = 0; |
| 1415 | cs.config = c; |
| 1416 | if(!c->namepart.n) { |
| 1417 | whoami = find("namepart"); |
| 1418 | for(n = 0; n < NNAMEPART; ++n) |
| 1419 | set_namepart(&cs, whoami, 4, (char **)namepart[n]); |
| 1420 | } |
| 1421 | if(!c->transform.n) { |
| 1422 | whoami = find("transform"); |
| 1423 | for(n = 0; n < NTRANSFORM; ++n) |
| 1424 | set_transform(&cs, whoami, 5, (char **)transform[n]); |
| 1425 | } |
| 1426 | if(!c->api) { |
| 1427 | if(c->speaker_command) |
| 1428 | c->api = xstrdup("command"); |
| 1429 | else if(c->broadcast.af != -1) |
| 1430 | c->api = xstrdup("rtp"); |
| 1431 | else if(config_uaudio_apis) |
| 1432 | c->api = xstrdup(config_uaudio_apis[0]->name); |
| 1433 | else |
| 1434 | c->api = xstrdup("<none>"); |
| 1435 | } |
| 1436 | if(!strcmp(c->api, "network")) |
| 1437 | c->api = xstrdup("rtp"); |
| 1438 | if(server) { |
| 1439 | if(!strcmp(c->api, "command") && !c->speaker_command) |
| 1440 | disorder_fatal(0, "'api command' but speaker_command is not set"); |
| 1441 | if((!strcmp(c->api, "rtp")) && c->broadcast.af == -1) |
| 1442 | disorder_fatal(0, "'api rtp' but broadcast is not set"); |
| 1443 | } |
| 1444 | /* Override sample format */ |
| 1445 | if(!strcmp(c->api, "rtp")) { |
| 1446 | c->sample_format.rate = 44100; |
| 1447 | c->sample_format.channels = 2; |
| 1448 | c->sample_format.bits = 16; |
| 1449 | c->sample_format.endian = ENDIAN_NATIVE; |
| 1450 | } |
| 1451 | if(!strcmp(c->api, "coreaudio")) { |
| 1452 | c->sample_format.rate = 44100; |
| 1453 | c->sample_format.channels = 2; |
| 1454 | c->sample_format.bits = 16; |
| 1455 | c->sample_format.endian = ENDIAN_NATIVE; |
| 1456 | } |
| 1457 | if(!c->default_rights) { |
| 1458 | rights_type r = RIGHTS__MASK & ~(RIGHT_ADMIN|RIGHT_REGISTER |
| 1459 | |RIGHT_MOVE__MASK |
| 1460 | |RIGHT_SCRATCH__MASK |
| 1461 | |RIGHT_REMOVE__MASK); |
| 1462 | r |= RIGHT_SCRATCH_ANY|RIGHT_MOVE_ANY|RIGHT_REMOVE_ANY; |
| 1463 | c->default_rights = rights_string(r); |
| 1464 | } |
| 1465 | } |
| 1466 | |
| 1467 | /** @brief (Re-)read the config file |
| 1468 | * @param server If set, do extra checking |
| 1469 | * @param oldconfig Old configuration for compatibility check |
| 1470 | * @return 0 on success, non-0 on error |
| 1471 | * |
| 1472 | * If @p oldconfig is set, then certain compatibility checks are done between |
| 1473 | * the old and new configurations. |
| 1474 | */ |
| 1475 | int config_read(int server, |
| 1476 | const struct config *oldconfig) { |
| 1477 | struct config *c; |
| 1478 | char *privconf; |
| 1479 | struct passwd *pw; |
| 1480 | |
| 1481 | set_configfile(); |
| 1482 | c = config_default(); |
| 1483 | /* standalone Disobedience installs might not have a global config file */ |
| 1484 | if(access(configfile, F_OK) == 0) |
| 1485 | if(config_include(c, configfile)) |
| 1486 | return -1; |
| 1487 | /* if we can read the private config file, do */ |
| 1488 | if((privconf = config_private()) |
| 1489 | && access(privconf, R_OK) == 0 |
| 1490 | && config_include(c, privconf)) |
| 1491 | return -1; |
| 1492 | xfree(privconf); |
| 1493 | /* if there's a per-user system config file for this user, read it */ |
| 1494 | if(config_per_user) { |
| 1495 | if(!(pw = getpwuid(getuid()))) |
| 1496 | disorder_fatal(0, "cannot determine our username"); |
| 1497 | if((privconf = config_usersysconf(pw)) |
| 1498 | && access(privconf, F_OK) == 0 |
| 1499 | && config_include(c, privconf)) |
| 1500 | return -1; |
| 1501 | xfree(privconf); |
| 1502 | /* if we have a password file, read it */ |
| 1503 | if((privconf = config_userconf(0, pw)) |
| 1504 | && access(privconf, F_OK) == 0 |
| 1505 | && config_include(c, privconf)) |
| 1506 | return -1; |
| 1507 | xfree(privconf); |
| 1508 | } |
| 1509 | /* install default namepart and transform settings */ |
| 1510 | config_postdefaults(c, server); |
| 1511 | if(oldconfig) { |
| 1512 | int failed = 0; |
| 1513 | if(strcmp(c->home, oldconfig->home)) { |
| 1514 | disorder_error(0, "'home' cannot be changed without a restart"); |
| 1515 | failed = 1; |
| 1516 | } |
| 1517 | if(strcmp(c->alias, oldconfig->alias)) { |
| 1518 | disorder_error(0, "'alias' cannot be changed without a restart"); |
| 1519 | failed = 1; |
| 1520 | } |
| 1521 | if(strcmp(c->user, oldconfig->user)) { |
| 1522 | disorder_error(0, "'user' cannot be changed without a restart"); |
| 1523 | failed = 1; |
| 1524 | } |
| 1525 | if(c->nice_speaker != oldconfig->nice_speaker) { |
| 1526 | disorder_error(0, "'nice_speaker' cannot be changed without a restart"); |
| 1527 | /* ...but we accept the new config anyway */ |
| 1528 | } |
| 1529 | if(c->nice_server != oldconfig->nice_server) { |
| 1530 | disorder_error(0, "'nice_server' cannot be changed without a restart"); |
| 1531 | /* ...but we accept the new config anyway */ |
| 1532 | } |
| 1533 | if(namepartlist_compare(&c->namepart, &oldconfig->namepart)) { |
| 1534 | disorder_error(0, "'namepart' settings cannot be changed without a restart"); |
| 1535 | failed = 1; |
| 1536 | } |
| 1537 | if(stringlist_compare(&c->stopword, &oldconfig->stopword)) { |
| 1538 | disorder_error(0, "'stopword' settings cannot be changed without a restart"); |
| 1539 | failed = 1; |
| 1540 | } |
| 1541 | if(failed) { |
| 1542 | disorder_error(0, "not installing incompatible new configuration"); |
| 1543 | return -1; |
| 1544 | } |
| 1545 | } |
| 1546 | /* everything is good so we shall use the new config */ |
| 1547 | config_free(config); |
| 1548 | /* warn about obsolete directives */ |
| 1549 | config = c; |
| 1550 | return 0; |
| 1551 | } |
| 1552 | |
| 1553 | /** @brief Return the path to the private configuration file */ |
| 1554 | char *config_private(void) { |
| 1555 | char *s; |
| 1556 | |
| 1557 | set_configfile(); |
| 1558 | byte_xasprintf(&s, "%s.private", configfile); |
| 1559 | return s; |
| 1560 | } |
| 1561 | |
| 1562 | /** @brief Return the path to user's personal configuration file */ |
| 1563 | char *config_userconf(const char *home, const struct passwd *pw) { |
| 1564 | char *s; |
| 1565 | |
| 1566 | if(!home && !pw && !(pw = getpwuid(getuid()))) |
| 1567 | disorder_fatal(0, "cannot determine our username"); |
| 1568 | byte_xasprintf(&s, "%s/.disorder/passwd", home ? home : pw->pw_dir); |
| 1569 | return s; |
| 1570 | } |
| 1571 | |
| 1572 | /** @brief Return the path to user-specific system configuration */ |
| 1573 | char *config_usersysconf(const struct passwd *pw) { |
| 1574 | char *s; |
| 1575 | |
| 1576 | set_configfile(); |
| 1577 | if(!strchr(pw->pw_name, '/')) { |
| 1578 | byte_xasprintf(&s, "%s.%s", configfile, pw->pw_name); |
| 1579 | return s; |
| 1580 | } else |
| 1581 | return 0; |
| 1582 | } |
| 1583 | |
| 1584 | /** @brief Get a filename within the home directory |
| 1585 | * @param name Relative name |
| 1586 | * @return Full path |
| 1587 | */ |
| 1588 | char *config_get_file(const char *name) { |
| 1589 | return config_get_file2(config, name); |
| 1590 | } |
| 1591 | |
| 1592 | /** @brief Order two stringlists |
| 1593 | * @param a First stringlist |
| 1594 | * @param b Second stringlist |
| 1595 | * @return <0, 0 or >0 if a<b, a=b or a>b |
| 1596 | */ |
| 1597 | static int stringlist_compare(const struct stringlist *a, |
| 1598 | const struct stringlist *b) { |
| 1599 | int n = 0, c; |
| 1600 | |
| 1601 | while(n < a->n && n < b->n) { |
| 1602 | if((c = strcmp(a->s[n], b->s[n]))) |
| 1603 | return c; |
| 1604 | ++n; |
| 1605 | } |
| 1606 | if(a->n < b->n) |
| 1607 | return -1; |
| 1608 | else if(a->n > b->n) |
| 1609 | return 1; |
| 1610 | else |
| 1611 | return 0; |
| 1612 | } |
| 1613 | |
| 1614 | /** @brief Order two namepart definitions |
| 1615 | * @param a First namepart definition |
| 1616 | * @param b Second namepart definition |
| 1617 | * @return <0, 0 or >0 if a<b, a=b or a>b |
| 1618 | */ |
| 1619 | static int namepart_compare(const struct namepart *a, |
| 1620 | const struct namepart *b) { |
| 1621 | int c; |
| 1622 | |
| 1623 | if((c = strcmp(a->part, b->part))) |
| 1624 | return c; |
| 1625 | if((c = strcmp(a->res, b->res))) |
| 1626 | return c; |
| 1627 | if((c = strcmp(a->replace, b->replace))) |
| 1628 | return c; |
| 1629 | if((c = strcmp(a->context, b->context))) |
| 1630 | return c; |
| 1631 | if(a->reflags > b->reflags) |
| 1632 | return 1; |
| 1633 | if(a->reflags < b->reflags) |
| 1634 | return -1; |
| 1635 | return 0; |
| 1636 | } |
| 1637 | |
| 1638 | /** @brief Order two lists of namepart definitions |
| 1639 | * @param a First list of namepart definitions |
| 1640 | * @param b Second list of namepart definitions |
| 1641 | * @return <0, 0 or >0 if a<b, a=b or a>b |
| 1642 | */ |
| 1643 | static int namepartlist_compare(const struct namepartlist *a, |
| 1644 | const struct namepartlist *b) { |
| 1645 | int n = 0, c; |
| 1646 | |
| 1647 | while(n < a->n && n < b->n) { |
| 1648 | if((c = namepart_compare(&a->s[n], &b->s[n]))) |
| 1649 | return c; |
| 1650 | ++n; |
| 1651 | } |
| 1652 | if(a->n > b->n) |
| 1653 | return 1; |
| 1654 | else if(a->n < b->n) |
| 1655 | return -1; |
| 1656 | else |
| 1657 | return 0; |
| 1658 | } |
| 1659 | |
| 1660 | /** @brief Verify configuration table. |
| 1661 | * @return The number of problems found |
| 1662 | */ |
| 1663 | int config_verify(void) { |
| 1664 | int fails = 0; |
| 1665 | for(size_t n = 1; n < sizeof conf / sizeof *conf; ++n) |
| 1666 | if(strcmp(conf[n-1].name, conf[n].name) >= 0) { |
| 1667 | fprintf(stderr, "%s >= %s\n", conf[n-1].name, conf[n].name); |
| 1668 | ++fails; |
| 1669 | } |
| 1670 | return fails; |
| 1671 | } |
| 1672 | |
| 1673 | /* |
| 1674 | Local Variables: |
| 1675 | c-basic-offset:2 |
| 1676 | comment-column:40 |
| 1677 | fill-column:79 |
| 1678 | End: |
| 1679 | */ |