| File: | src/usr.bin/sndiod/sndiod.c |
| Warning: | line 609, column 2 Value stored to 'argv' is never read |
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| 1 | /* $OpenBSD: sndiod.c,v 1.47 2021/11/01 14:43:25 ratchov Exp $ */ |
| 2 | /* |
| 3 | * Copyright (c) 2008-2012 Alexandre Ratchov <alex@caoua.org> |
| 4 | * |
| 5 | * Permission to use, copy, modify, and distribute this software for any |
| 6 | * purpose with or without fee is hereby granted, provided that the above |
| 7 | * copyright notice and this permission notice appear in all copies. |
| 8 | * |
| 9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 16 | */ |
| 17 | #include <sys/stat.h> |
| 18 | #include <sys/types.h> |
| 19 | #include <sys/resource.h> |
| 20 | #include <sys/socket.h> |
| 21 | |
| 22 | #include <err.h> |
| 23 | #include <errno(*__errno()).h> |
| 24 | #include <fcntl.h> |
| 25 | #include <grp.h> |
| 26 | #include <limits.h> |
| 27 | #include <pwd.h> |
| 28 | #include <signal.h> |
| 29 | #include <sndio.h> |
| 30 | #include <stdio.h> |
| 31 | #include <stdlib.h> |
| 32 | #include <string.h> |
| 33 | #include <unistd.h> |
| 34 | |
| 35 | #include "amsg.h" |
| 36 | #include "defs.h" |
| 37 | #include "dev.h" |
| 38 | #include "fdpass.h" |
| 39 | #include "file.h" |
| 40 | #include "listen.h" |
| 41 | #include "midi.h" |
| 42 | #include "opt.h" |
| 43 | #include "sock.h" |
| 44 | #include "utils.h" |
| 45 | |
| 46 | /* |
| 47 | * unprivileged user name |
| 48 | */ |
| 49 | #ifndef SNDIO_USER"_sndio" |
| 50 | #define SNDIO_USER"_sndio" "_sndio" |
| 51 | #endif |
| 52 | |
| 53 | /* |
| 54 | * privileged user name |
| 55 | */ |
| 56 | #ifndef SNDIO_PRIV_USER"_sndiop" |
| 57 | #define SNDIO_PRIV_USER"_sndiop" "_sndiop" |
| 58 | #endif |
| 59 | |
| 60 | /* |
| 61 | * priority when run as root |
| 62 | */ |
| 63 | #ifndef SNDIO_PRIO(-20) |
| 64 | #define SNDIO_PRIO(-20) (-20) |
| 65 | #endif |
| 66 | |
| 67 | /* |
| 68 | * sample rate if no ``-r'' is used |
| 69 | */ |
| 70 | #ifndef DEFAULT_RATE48000 |
| 71 | #define DEFAULT_RATE48000 48000 |
| 72 | #endif |
| 73 | |
| 74 | /* |
| 75 | * block size if neither ``-z'' nor ``-b'' is used |
| 76 | */ |
| 77 | #ifndef DEFAULT_ROUND480 |
| 78 | #define DEFAULT_ROUND480 480 |
| 79 | #endif |
| 80 | |
| 81 | /* |
| 82 | * buffer size if neither ``-z'' nor ``-b'' is used |
| 83 | */ |
| 84 | #ifndef DEFAULT_BUFSZ7680 |
| 85 | #define DEFAULT_BUFSZ7680 7680 |
| 86 | #endif |
| 87 | |
| 88 | void sigint(int); |
| 89 | void sighup(int); |
| 90 | void opt_ch(int *, int *); |
| 91 | void opt_enc(struct aparams *); |
| 92 | int opt_mmc(void); |
| 93 | int opt_onoff(void); |
| 94 | int getword(char *, char **); |
| 95 | unsigned int opt_mode(void); |
| 96 | void getbasepath(char *); |
| 97 | void setsig(void); |
| 98 | void unsetsig(void); |
| 99 | struct dev *mkdev(char *, struct aparams *, |
| 100 | int, int, int, int, int, int); |
| 101 | struct port *mkport(char *, int); |
| 102 | struct opt *mkopt(char *, struct dev *, |
| 103 | int, int, int, int, int, int, int, int); |
| 104 | |
| 105 | unsigned int log_level = 0; |
| 106 | volatile sig_atomic_t quit_flag = 0, reopen_flag = 0; |
| 107 | |
| 108 | char usagestr[] = "usage: sndiod [-d] [-a flag] [-b nframes] " |
| 109 | "[-C min:max] [-c min:max]\n\t" |
| 110 | "[-e enc] [-F device] [-f device] [-j flag] [-L addr] [-m mode]\n\t" |
| 111 | "[-Q port] [-q port] [-r rate] [-s name] [-t mode] [-U unit]\n\t" |
| 112 | "[-v volume] [-w flag] [-z nframes]\n"; |
| 113 | |
| 114 | /* |
| 115 | * default audio devices |
| 116 | */ |
| 117 | static char *default_devs[] = { |
| 118 | "rsnd/0", "rsnd/1", "rsnd/2", "rsnd/3", |
| 119 | NULL((void*)0) |
| 120 | }; |
| 121 | |
| 122 | /* |
| 123 | * default MIDI ports |
| 124 | */ |
| 125 | static char *default_ports[] = { |
| 126 | "rmidi/0", "rmidi/1", "rmidi/2", "rmidi/3", |
| 127 | "rmidi/4", "rmidi/5", "rmidi/6", "rmidi/7", |
| 128 | NULL((void*)0) |
| 129 | }; |
| 130 | |
| 131 | /* |
| 132 | * SIGINT handler, it raises the quit flag. If the flag is already set, |
| 133 | * that means that the last SIGINT was not handled, because the process |
| 134 | * is blocked somewhere, so exit. |
| 135 | */ |
| 136 | void |
| 137 | sigint(int s) |
| 138 | { |
| 139 | if (quit_flag) |
| 140 | _exit(1); |
| 141 | quit_flag = 1; |
| 142 | } |
| 143 | |
| 144 | /* |
| 145 | * SIGHUP handler, it raises the reopen flag, which requests devices |
| 146 | * to be reopened. |
| 147 | */ |
| 148 | void |
| 149 | sighup(int s) |
| 150 | { |
| 151 | reopen_flag = 1; |
| 152 | } |
| 153 | |
| 154 | void |
| 155 | opt_ch(int *rcmin, int *rcmax) |
| 156 | { |
| 157 | char *next, *end; |
| 158 | long cmin, cmax; |
| 159 | |
| 160 | errno(*__errno()) = 0; |
| 161 | cmin = strtol(optarg, &next, 10); |
| 162 | if (next == optarg || *next != ':') |
| 163 | goto failed; |
| 164 | cmax = strtol(++next, &end, 10); |
| 165 | if (end == next || *end != '\0') |
| 166 | goto failed; |
| 167 | if (cmin < 0 || cmax < cmin || cmax >= NCHAN_MAX64) |
| 168 | goto failed; |
| 169 | *rcmin = cmin; |
| 170 | *rcmax = cmax; |
| 171 | return; |
| 172 | failed: |
| 173 | errx(1, "%s: bad channel range", optarg); |
| 174 | } |
| 175 | |
| 176 | void |
| 177 | opt_enc(struct aparams *par) |
| 178 | { |
| 179 | int len; |
| 180 | |
| 181 | len = aparams_strtoenc(par, optarg); |
| 182 | if (len == 0 || optarg[len] != '\0') |
| 183 | errx(1, "%s: bad encoding", optarg); |
| 184 | } |
| 185 | |
| 186 | int |
| 187 | opt_mmc(void) |
| 188 | { |
| 189 | if (strcmp("off", optarg) == 0) |
| 190 | return 0; |
| 191 | if (strcmp("slave", optarg) == 0) |
| 192 | return 1; |
| 193 | errx(1, "%s: off/slave expected", optarg); |
| 194 | } |
| 195 | |
| 196 | int |
| 197 | opt_onoff(void) |
| 198 | { |
| 199 | if (strcmp("off", optarg) == 0) |
| 200 | return 0; |
| 201 | if (strcmp("on", optarg) == 0) |
| 202 | return 1; |
| 203 | errx(1, "%s: on/off expected", optarg); |
| 204 | } |
| 205 | |
| 206 | int |
| 207 | getword(char *word, char **str) |
| 208 | { |
| 209 | char *p = *str; |
| 210 | |
| 211 | for (;;) { |
| 212 | if (*word == '\0') |
| 213 | break; |
| 214 | if (*word++ != *p++) |
| 215 | return 0; |
| 216 | } |
| 217 | if (*p == ',' || *p == '\0') { |
| 218 | *str = p; |
| 219 | return 1; |
| 220 | } |
| 221 | return 0; |
| 222 | } |
| 223 | |
| 224 | unsigned int |
| 225 | opt_mode(void) |
| 226 | { |
| 227 | unsigned int mode = 0; |
| 228 | char *p = optarg; |
| 229 | |
| 230 | for (;;) { |
| 231 | if (getword("play", &p)) { |
| 232 | mode |= MODE_PLAY0x01; |
| 233 | } else if (getword("rec", &p)) { |
| 234 | mode |= MODE_REC0x02; |
| 235 | } else if (getword("mon", &p)) { |
| 236 | mode |= MODE_MON0x10; |
| 237 | } else if (getword("midi", &p)) { |
| 238 | mode |= MODE_MIDIMASK(0x08 | 0x04); |
| 239 | } else |
| 240 | errx(1, "%s: bad mode", optarg); |
| 241 | if (*p == '\0') |
| 242 | break; |
| 243 | p++; |
| 244 | } |
| 245 | if (mode == 0) |
| 246 | errx(1, "empty mode"); |
| 247 | return mode; |
| 248 | } |
| 249 | |
| 250 | void |
| 251 | setsig(void) |
| 252 | { |
| 253 | struct sigaction sa; |
| 254 | |
| 255 | quit_flag = 0; |
| 256 | reopen_flag = 0; |
| 257 | sigfillset(&sa.sa_mask); |
| 258 | sa.sa_flags = SA_RESTART0x0002; |
| 259 | sa.sa_handler__sigaction_u.__sa_handler = sigint; |
| 260 | if (sigaction(SIGINT2, &sa, NULL((void*)0)) == -1) |
| 261 | err(1, "sigaction(int) failed"); |
| 262 | if (sigaction(SIGTERM15, &sa, NULL((void*)0)) == -1) |
| 263 | err(1, "sigaction(term) failed"); |
| 264 | sa.sa_handler__sigaction_u.__sa_handler = sighup; |
| 265 | if (sigaction(SIGHUP1, &sa, NULL((void*)0)) == -1) |
| 266 | err(1, "sigaction(hup) failed"); |
| 267 | } |
| 268 | |
| 269 | void |
| 270 | unsetsig(void) |
| 271 | { |
| 272 | struct sigaction sa; |
| 273 | |
| 274 | sigfillset(&sa.sa_mask); |
| 275 | sa.sa_flags = SA_RESTART0x0002; |
| 276 | sa.sa_handler__sigaction_u.__sa_handler = SIG_DFL(void (*)(int))0; |
| 277 | if (sigaction(SIGHUP1, &sa, NULL((void*)0)) == -1) |
| 278 | err(1, "unsetsig(hup): sigaction failed"); |
| 279 | if (sigaction(SIGTERM15, &sa, NULL((void*)0)) == -1) |
| 280 | err(1, "unsetsig(term): sigaction failed"); |
| 281 | if (sigaction(SIGINT2, &sa, NULL((void*)0)) == -1) |
| 282 | err(1, "unsetsig(int): sigaction failed"); |
| 283 | } |
| 284 | |
| 285 | void |
| 286 | getbasepath(char *base) |
| 287 | { |
| 288 | uid_t uid; |
| 289 | struct stat sb; |
| 290 | mode_t mask, omask; |
| 291 | |
| 292 | uid = geteuid(); |
| 293 | if (uid == 0) { |
| 294 | mask = 022; |
| 295 | snprintf(base, SOCKPATH_MAX(1 + sizeof("/tmp/sndio") - 1 + sizeof(char) + sizeof(int) * 3 + sizeof(char) + sizeof("sock") - 1 + sizeof(int) * 3), SOCKPATH_DIR"/tmp/sndio"); |
| 296 | } else { |
| 297 | mask = 077; |
| 298 | snprintf(base, SOCKPATH_MAX(1 + sizeof("/tmp/sndio") - 1 + sizeof(char) + sizeof(int) * 3 + sizeof(char) + sizeof("sock") - 1 + sizeof(int) * 3), SOCKPATH_DIR"/tmp/sndio" "-%u", uid); |
| 299 | } |
| 300 | omask = umask(mask); |
| 301 | if (mkdir(base, 0777) == -1) { |
| 302 | if (errno(*__errno()) != EEXIST17) |
| 303 | err(1, "mkdir(\"%s\")", base); |
| 304 | } |
| 305 | umask(omask); |
| 306 | if (stat(base, &sb) == -1) |
| 307 | err(1, "stat(\"%s\")", base); |
| 308 | if (!S_ISDIR(sb.st_mode)((sb.st_mode & 0170000) == 0040000)) |
| 309 | errx(1, "%s is not a directory", base); |
| 310 | if (sb.st_uid != uid || (sb.st_mode & mask) != 0) |
| 311 | errx(1, "%s has wrong permissions", base); |
| 312 | } |
| 313 | |
| 314 | struct dev * |
| 315 | mkdev(char *path, struct aparams *par, |
| 316 | int mode, int bufsz, int round, int rate, int hold, int autovol) |
| 317 | { |
| 318 | struct dev *d; |
| 319 | |
| 320 | for (d = dev_list; d != NULL((void*)0); d = d->next) { |
| 321 | if (strcmp(d->path, path) == 0) |
| 322 | return d; |
| 323 | } |
| 324 | if (!bufsz && !round) { |
| 325 | round = DEFAULT_ROUND480; |
| 326 | bufsz = DEFAULT_BUFSZ7680; |
| 327 | } else if (!bufsz) { |
| 328 | bufsz = round * 2; |
| 329 | } else if (!round) |
| 330 | round = bufsz / 2; |
| 331 | d = dev_new(path, par, mode, bufsz, round, rate, hold, autovol); |
| 332 | if (d == NULL((void*)0)) |
| 333 | exit(1); |
| 334 | return d; |
| 335 | } |
| 336 | |
| 337 | struct port * |
| 338 | mkport(char *path, int hold) |
| 339 | { |
| 340 | struct port *c; |
| 341 | |
| 342 | for (c = port_list; c != NULL((void*)0); c = c->next) { |
| 343 | if (strcmp(c->path, path) == 0) |
| 344 | return c; |
| 345 | } |
| 346 | c = port_new(path, MODE_MIDIMASK(0x08 | 0x04), hold); |
| 347 | if (c == NULL((void*)0)) |
| 348 | exit(1); |
| 349 | return c; |
| 350 | } |
| 351 | |
| 352 | struct opt * |
| 353 | mkopt(char *path, struct dev *d, |
| 354 | int pmin, int pmax, int rmin, int rmax, |
| 355 | int mode, int vol, int mmc, int dup) |
| 356 | { |
| 357 | struct opt *o; |
| 358 | |
| 359 | o = opt_new(d, path, pmin, pmax, rmin, rmax, |
| 360 | MIDI_TO_ADATA(vol)(aparams_ctltovol[vol] << (16 - 16)), mmc, dup, mode); |
| 361 | if (o == NULL((void*)0)) |
| 362 | return NULL((void*)0); |
| 363 | dev_adjpar(d, o->mode, o->pmax, o->rmax); |
| 364 | return o; |
| 365 | } |
| 366 | |
| 367 | static void |
| 368 | dounveil(char *name, char *prefix, char *path_prefix) |
| 369 | { |
| 370 | size_t prefix_len; |
| 371 | char path[PATH_MAX1024]; |
| 372 | |
| 373 | prefix_len = strlen(prefix); |
| 374 | |
| 375 | if (strncmp(name, prefix, prefix_len) != 0) |
| 376 | errx(1, "%s: unsupported device or port format", name); |
| 377 | snprintf(path, sizeof(path), "%s%s", path_prefix, name + prefix_len); |
| 378 | if (unveil(path, "rw") == -1) |
| 379 | err(1, "unveil %s", path); |
| 380 | } |
| 381 | |
| 382 | static int |
| 383 | start_helper(int background) |
| 384 | { |
| 385 | struct dev *d; |
| 386 | struct port *p; |
| 387 | struct passwd *pw; |
| 388 | int s[2]; |
| 389 | pid_t pid; |
| 390 | |
| 391 | if (geteuid() == 0) { |
| 392 | if ((pw = getpwnam(SNDIO_PRIV_USER"_sndiop")) == NULL((void*)0)) |
| 393 | errx(1, "unknown user %s", SNDIO_PRIV_USER"_sndiop"); |
| 394 | } else |
| 395 | pw = NULL((void*)0); |
| 396 | if (socketpair(AF_UNIX1, SOCK_STREAM1, 0, s) == -1) { |
| 397 | perror("socketpair"); |
| 398 | return 0; |
| 399 | } |
| 400 | pid = fork(); |
| 401 | if (pid == -1) { |
| 402 | log_puts("can't fork\n"); |
| 403 | return 0; |
| 404 | } |
| 405 | if (pid == 0) { |
| 406 | setproctitle("helper"); |
| 407 | close(s[0]); |
| 408 | if (fdpass_new(s[1], &helper_fileops) == NULL((void*)0)) |
| 409 | return 0; |
| 410 | if (background) { |
| 411 | log_flush(); |
| 412 | log_level = 0; |
| 413 | if (daemon(0, 0) == -1) |
| 414 | err(1, "daemon"); |
| 415 | } |
| 416 | if (pw != NULL((void*)0)) { |
| 417 | if (setgroups(1, &pw->pw_gid) || |
| 418 | setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) || |
| 419 | setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid)) |
| 420 | err(1, "cannot drop privileges"); |
| 421 | } |
| 422 | for (d = dev_list; d != NULL((void*)0); d = d->next) { |
| 423 | dounveil(d->path, "rsnd/", "/dev/audio"); |
| 424 | dounveil(d->path, "rsnd/", "/dev/audioctl"); |
| 425 | } |
| 426 | for (p = port_list; p != NULL((void*)0); p = p->next) { |
| 427 | dounveil(p->path, "rmidi/", "/dev/rmidi"); |
| 428 | } |
| 429 | if (pledge("stdio sendfd rpath wpath", NULL((void*)0)) == -1) |
| 430 | err(1, "pledge"); |
| 431 | while (file_poll()) |
| 432 | ; /* nothing */ |
| 433 | exit(0); |
| 434 | } else { |
| 435 | close(s[1]); |
| 436 | if (fdpass_new(s[0], &worker_fileops) == NULL((void*)0)) |
| 437 | return 0; |
| 438 | } |
| 439 | return 1; |
| 440 | } |
| 441 | |
| 442 | static void |
| 443 | stop_helper(void) |
| 444 | { |
| 445 | if (fdpass_peer) |
| 446 | fdpass_close(fdpass_peer); |
| 447 | } |
| 448 | |
| 449 | int |
| 450 | main(int argc, char **argv) |
| 451 | { |
| 452 | int c, i, background, unit; |
| 453 | int pmin, pmax, rmin, rmax; |
| 454 | char base[SOCKPATH_MAX(1 + sizeof("/tmp/sndio") - 1 + sizeof(char) + sizeof(int) * 3 + sizeof(char) + sizeof("sock") - 1 + sizeof(int) * 3)], path[SOCKPATH_MAX(1 + sizeof("/tmp/sndio") - 1 + sizeof(char) + sizeof(int) * 3 + sizeof(char) + sizeof("sock") - 1 + sizeof(int) * 3)]; |
| 455 | unsigned int mode, dup, mmc, vol; |
| 456 | unsigned int hold, autovol, bufsz, round, rate; |
| 457 | unsigned int reopen_list; |
| 458 | const char *str; |
| 459 | struct aparams par; |
| 460 | struct opt *o; |
| 461 | struct dev *d, *dev_first, *dev_next; |
| 462 | struct port *p, *port_first, *port_next; |
| 463 | struct listen *l; |
| 464 | struct passwd *pw; |
| 465 | struct tcpaddr { |
| 466 | char *host; |
| 467 | struct tcpaddr *next; |
| 468 | } *tcpaddr_list, *ta; |
| 469 | |
| 470 | atexit(log_flush); |
| 471 | |
| 472 | /* |
| 473 | * global options defaults |
| 474 | */ |
| 475 | vol = 127; |
| 476 | dup = 1; |
| 477 | mmc = 0; |
| 478 | hold = 0; |
| 479 | autovol = 0; |
| 480 | bufsz = 0; |
| 481 | round = 0; |
| 482 | rate = DEFAULT_RATE48000; |
| 483 | unit = 0; |
| 484 | background = 1; |
| 485 | pmin = 0; |
| 486 | pmax = 1; |
| 487 | rmin = 0; |
| 488 | rmax = 1; |
| 489 | aparams_init(&par); |
| 490 | mode = MODE_PLAY0x01 | MODE_REC0x02; |
| 491 | dev_first = dev_next = NULL((void*)0); |
| 492 | port_first = port_next = NULL((void*)0); |
| 493 | tcpaddr_list = NULL((void*)0); |
| 494 | d = NULL((void*)0); |
| 495 | p = NULL((void*)0); |
| 496 | |
| 497 | slot_array_init(); |
| 498 | |
| 499 | while ((c = getopt(argc, argv, |
| 500 | "a:b:c:C:de:F:f:j:L:m:Q:q:r:s:t:U:v:w:x:z:")) != -1) { |
| 501 | switch (c) { |
| 502 | case 'd': |
| 503 | log_level++; |
| 504 | background = 0; |
| 505 | break; |
| 506 | case 'U': |
| 507 | unit = strtonum(optarg, 0, 15, &str); |
| 508 | if (str) |
| 509 | errx(1, "%s: unit number is %s", optarg, str); |
| 510 | break; |
| 511 | case 'L': |
| 512 | ta = xmalloc(sizeof(struct tcpaddr)); |
| 513 | ta->host = optarg; |
| 514 | ta->next = tcpaddr_list; |
| 515 | tcpaddr_list = ta; |
| 516 | break; |
| 517 | case 'm': |
| 518 | mode = opt_mode(); |
| 519 | break; |
| 520 | case 'j': |
| 521 | dup = opt_onoff(); |
| 522 | break; |
| 523 | case 't': |
| 524 | mmc = opt_mmc(); |
| 525 | break; |
| 526 | case 'c': |
| 527 | opt_ch(&pmin, &pmax); |
| 528 | break; |
| 529 | case 'C': |
| 530 | opt_ch(&rmin, &rmax); |
| 531 | break; |
| 532 | case 'e': |
| 533 | opt_enc(&par); |
| 534 | break; |
| 535 | case 'r': |
| 536 | rate = strtonum(optarg, RATE_MIN4000, RATE_MAX192000, &str); |
| 537 | if (str) |
| 538 | errx(1, "%s: rate is %s", optarg, str); |
| 539 | break; |
| 540 | case 'v': |
| 541 | vol = strtonum(optarg, 0, MIDI_MAXCTL127, &str); |
| 542 | if (str) |
| 543 | errx(1, "%s: volume is %s", optarg, str); |
| 544 | break; |
| 545 | case 's': |
| 546 | if (d == NULL((void*)0)) { |
| 547 | for (i = 0; default_devs[i] != NULL((void*)0); i++) { |
| 548 | mkdev(default_devs[i], &par, 0, |
| 549 | bufsz, round, rate, 0, autovol); |
| 550 | } |
| 551 | d = dev_list; |
| 552 | } |
| 553 | if (mkopt(optarg, d, pmin, pmax, rmin, rmax, |
| 554 | mode, vol, mmc, dup) == NULL((void*)0)) |
| 555 | return 1; |
| 556 | break; |
| 557 | case 'q': |
| 558 | p = mkport(optarg, hold); |
| 559 | /* create new circulate list */ |
| 560 | port_first = port_next = p; |
| 561 | break; |
| 562 | case 'Q': |
| 563 | if (p == NULL((void*)0)) |
| 564 | errx(1, "-Q %s: no ports defined", optarg); |
| 565 | p = mkport(optarg, hold); |
| 566 | /* add to circulate list */ |
| 567 | p->alt_next = port_next; |
| 568 | port_first->alt_next = p; |
| 569 | port_next = p; |
| 570 | break; |
| 571 | case 'a': |
| 572 | hold = opt_onoff(); |
| 573 | break; |
| 574 | case 'w': |
| 575 | autovol = opt_onoff(); |
| 576 | break; |
| 577 | case 'b': |
| 578 | bufsz = strtonum(optarg, 1, RATE_MAX192000, &str); |
| 579 | if (str) |
| 580 | errx(1, "%s: buffer size is %s", optarg, str); |
| 581 | break; |
| 582 | case 'z': |
| 583 | round = strtonum(optarg, 1, SHRT_MAX32767, &str); |
| 584 | if (str) |
| 585 | errx(1, "%s: block size is %s", optarg, str); |
| 586 | break; |
| 587 | case 'f': |
| 588 | d = mkdev(optarg, &par, 0, bufsz, round, |
| 589 | rate, hold, autovol); |
| 590 | /* create new circulate list */ |
| 591 | dev_first = dev_next = d; |
| 592 | break; |
| 593 | case 'F': |
| 594 | if (d == NULL((void*)0)) |
| 595 | errx(1, "-F %s: no devices defined", optarg); |
| 596 | d = mkdev(optarg, &par, 0, bufsz, round, |
| 597 | rate, hold, autovol); |
| 598 | /* add to circulate list */ |
| 599 | d->alt_next = dev_next; |
| 600 | dev_first->alt_next = d; |
| 601 | dev_next = d; |
| 602 | break; |
| 603 | default: |
| 604 | fputs(usagestr, stderr(&__sF[2])); |
| 605 | return 1; |
| 606 | } |
| 607 | } |
| 608 | argc -= optind; |
| 609 | argv += optind; |
Value stored to 'argv' is never read | |
| 610 | if (argc > 0) { |
| 611 | fputs(usagestr, stderr(&__sF[2])); |
| 612 | return 1; |
| 613 | } |
| 614 | if (port_list == NULL((void*)0)) { |
| 615 | for (i = 0; default_ports[i] != NULL((void*)0); i++) |
| 616 | mkport(default_ports[i], 0); |
| 617 | } |
| 618 | if (dev_list == NULL((void*)0)) { |
| 619 | for (i = 0; default_devs[i] != NULL((void*)0); i++) { |
| 620 | mkdev(default_devs[i], &par, 0, |
| 621 | bufsz, round, rate, 0, autovol); |
| 622 | } |
| 623 | } |
| 624 | |
| 625 | /* |
| 626 | * Add default sub-device (if none) backed by the last device |
| 627 | */ |
| 628 | o = opt_byname("default"); |
| 629 | if (o == NULL((void*)0)) { |
| 630 | o = mkopt("default", dev_list, pmin, pmax, rmin, rmax, |
| 631 | mode, vol, 0, dup); |
| 632 | if (o == NULL((void*)0)) |
| 633 | return 1; |
| 634 | } |
| 635 | |
| 636 | /* |
| 637 | * For each device create an anonymous sub-device using |
| 638 | * the "default" sub-device as template |
| 639 | */ |
| 640 | for (d = dev_list; d != NULL((void*)0); d = d->next) { |
| 641 | if (opt_new(d, NULL((void*)0), o->pmin, o->pmax, o->rmin, o->rmax, |
| 642 | o->maxweight, o->mtc != NULL((void*)0), o->dup, o->mode) == NULL((void*)0)) |
| 643 | return 1; |
| 644 | dev_adjpar(d, o->mode, o->pmax, o->rmax); |
| 645 | } |
| 646 | |
| 647 | setsig(); |
| 648 | filelist_init(); |
| 649 | |
| 650 | if (!start_helper(background)) |
| 651 | return 1; |
| 652 | |
| 653 | if (geteuid() == 0) { |
| 654 | if ((pw = getpwnam(SNDIO_USER"_sndio")) == NULL((void*)0)) |
| 655 | errx(1, "unknown user %s", SNDIO_USER"_sndio"); |
| 656 | } else |
| 657 | pw = NULL((void*)0); |
| 658 | getbasepath(base); |
| 659 | snprintf(path, SOCKPATH_MAX(1 + sizeof("/tmp/sndio") - 1 + sizeof(char) + sizeof(int) * 3 + sizeof(char) + sizeof("sock") - 1 + sizeof(int) * 3), "%s/" SOCKPATH_FILE"sock" "%u", base, unit); |
| 660 | if (!listen_new_un(path)) |
| 661 | return 1; |
| 662 | for (ta = tcpaddr_list; ta != NULL((void*)0); ta = ta->next) { |
| 663 | if (!listen_new_tcp(ta->host, AUCAT_PORT11025 + unit)) |
| 664 | return 1; |
| 665 | } |
| 666 | for (l = listen_list; l != NULL((void*)0); l = l->next) { |
| 667 | if (!listen_init(l)) |
| 668 | return 1; |
| 669 | } |
| 670 | midi_init(); |
| 671 | for (p = port_list; p != NULL((void*)0); p = p->next) { |
| 672 | if (!port_init(p)) |
| 673 | return 1; |
| 674 | } |
| 675 | for (d = dev_list; d != NULL((void*)0); d = d->next) { |
| 676 | if (!dev_init(d)) |
| 677 | return 1; |
| 678 | } |
| 679 | for (o = opt_list; o != NULL((void*)0); o = o->next) |
| 680 | opt_init(o); |
| 681 | if (background) { |
| 682 | log_flush(); |
| 683 | log_level = 0; |
| 684 | if (daemon(0, 0) == -1) |
| 685 | err(1, "daemon"); |
| 686 | } |
| 687 | if (pw != NULL((void*)0)) { |
| 688 | if (setpriority(PRIO_PROCESS0, 0, SNDIO_PRIO(-20)) == -1) |
| 689 | err(1, "setpriority"); |
| 690 | if (chroot(pw->pw_dir) == -1 || chdir("/") == -1) |
| 691 | err(1, "cannot chroot to %s", pw->pw_dir); |
| 692 | if (setgroups(1, &pw->pw_gid) == -1 || |
| 693 | setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) == -1 || |
| 694 | setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid) == -1 ) |
| 695 | err(1, "cannot drop privileges"); |
| 696 | } |
| 697 | if (tcpaddr_list) { |
| 698 | if (pledge("stdio audio recvfd unix inet", NULL((void*)0)) == -1) |
| 699 | err(1, "pledge"); |
| 700 | } else { |
| 701 | if (pledge("stdio audio recvfd unix", NULL((void*)0)) == -1) |
| 702 | err(1, "pledge"); |
| 703 | } |
| 704 | for (;;) { |
| 705 | if (quit_flag) |
| 706 | break; |
| 707 | if (reopen_flag) { |
| 708 | reopen_flag = 0; |
| 709 | |
| 710 | reopen_list = 0; |
| 711 | for (d = dev_list; d != NULL((void*)0); d = d->next) { |
| 712 | if (d->pstate != DEV_CFG0) |
| 713 | reopen_list |= (1 << d->num); |
| 714 | } |
| 715 | for (d = dev_list; d != NULL((void*)0); d = d->next) { |
| 716 | if (reopen_list & (1 << d->num)) |
| 717 | dev_migrate(d); |
| 718 | } |
| 719 | |
| 720 | reopen_list = 0; |
| 721 | for (p = port_list; p != NULL((void*)0); p = p->next) { |
| 722 | if (p->state != PORT_CFG0) |
| 723 | reopen_list |= (1 << p->num); |
| 724 | } |
| 725 | for (p = port_list; p != NULL((void*)0); p = p->next) { |
| 726 | if (reopen_list & (1 << p->num)) { |
| 727 | if (port_migrate(p) != p) |
| 728 | port_close(p); |
| 729 | } |
| 730 | } |
| 731 | } |
| 732 | if (!fdpass_peer) |
| 733 | break; |
| 734 | if (!file_poll()) |
| 735 | break; |
| 736 | } |
| 737 | stop_helper(); |
| 738 | while (listen_list != NULL((void*)0)) |
| 739 | listen_close(listen_list); |
| 740 | while (sock_list != NULL((void*)0)) |
| 741 | sock_close(sock_list); |
| 742 | for (o = opt_list; o != NULL((void*)0); o = o->next) |
| 743 | opt_done(o); |
| 744 | for (d = dev_list; d != NULL((void*)0); d = d->next) |
| 745 | dev_done(d); |
| 746 | for (p = port_list; p != NULL((void*)0); p = p->next) |
| 747 | port_done(p); |
| 748 | while (file_poll()) |
| 749 | ; /* nothing */ |
| 750 | midi_done(); |
| 751 | |
| 752 | while (opt_list) |
| 753 | opt_del(opt_list); |
| 754 | while (dev_list) |
| 755 | dev_del(dev_list); |
| 756 | while (port_list) |
| 757 | port_del(port_list); |
| 758 | while (tcpaddr_list) { |
| 759 | ta = tcpaddr_list; |
| 760 | tcpaddr_list = ta->next; |
| 761 | xfree(ta); |
| 762 | } |
| 763 | filelist_done(); |
| 764 | unsetsig(); |
| 765 | return 0; |
| 766 | } |