bthset.c revision 1.5
1 /* $NetBSD: bthset.c,v 1.5 2009/05/12 18:39:55 plunky Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 Itronix Inc. 5 * All rights reserved. 6 * 7 * Written by Iain Hibbert for Itronix Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. The name of Itronix Inc. may not be used to endorse 18 * or promote products derived from this software without specific 19 * prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 28 * ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 __COPYRIGHT("@(#) Copyright (c) 2006 Itronix, Inc. All rights reserved."); 36 __RCSID("$NetBSD: bthset.c,v 1.5 2009/05/12 18:39:55 plunky Exp $"); 37 38 #include <sys/types.h> 39 #include <sys/audioio.h> 40 #include <sys/ioctl.h> 41 #include <sys/time.h> 42 43 #include <assert.h> 44 #include <bluetooth.h> 45 #include <err.h> 46 #include <event.h> 47 #include <fcntl.h> 48 #include <sdp.h> 49 #include <signal.h> 50 #include <stdarg.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <unistd.h> 55 #include <errno.h> 56 57 #include <dev/bluetooth/btdev.h> 58 #include <dev/bluetooth/btsco.h> 59 60 #include <netbt/rfcomm.h> 61 62 #define RING_INTERVAL 5 /* seconds */ 63 64 int main(int, char *[]); 65 void usage(void); 66 67 void do_signal(int, short, void *); 68 void do_ring(int, short, void *); 69 void do_mixer(int, short, void *); 70 void do_rfcomm(int, short, void *); 71 void do_server(int, short, void *); 72 int send_rfcomm(const char *, ...); 73 74 int init_mixer(struct btsco_info *, const char *); 75 int init_rfcomm(struct btsco_info *); 76 int init_server(struct btsco_info *, int); 77 78 void remove_pid(void); 79 int write_pid(void); 80 81 struct event sigint_ev; /* bye bye */ 82 struct event sigusr1_ev; /* start ringing */ 83 struct event sigusr2_ev; /* stop ringing */ 84 struct event mixer_ev; /* mixer changed */ 85 struct event rfcomm_ev; /* headset speaks */ 86 struct event server_ev; /* headset connecting */ 87 struct event ring_ev; /* ring timer */ 88 89 mixer_ctrl_t vgs; /* speaker control */ 90 mixer_ctrl_t vgm; /* mic control */ 91 int ringing; /* we are ringing */ 92 int verbose; /* copy to stdout */ 93 int mx; /* mixer fd */ 94 int rf; /* rfcomm connection fd */ 95 int ag; /* rfcomm gateway fd */ 96 sdp_session_t ss; /* SDP server session */ 97 98 char *command; /* answer command */ 99 char *pidfile; /* PID file name */ 100 101 /* Headset Audio Gateway service record */ 102 uint8_t hset_data[] = { 103 0x09, 0x00, 0x00, // uint16 ServiceRecordHandle 104 0x0a, 0x00, 0x00, 0x00, // uint32 0x00000000 105 0x00, 106 107 0x09, 0x00, 0x01, // uint16 ServiceClassIDList 108 0x35, 0x06, // seq8(6) 109 0x19, 0x11, 0x12, // uuid16 HeadsetAudioGateway 110 0x19, 0x12, 0x03, // uuid16 GenericAudio 111 112 0x09, 0x00, 0x04, // uint16 ProtocolDescriptorList 113 0x35, 0x0c, // seq8(12) 114 0x35, 0x03, // seq8(3) 115 0x19, 0x01, 0x00, // uuid16 L2CAP 116 0x35, 0x05, // seq8(5) 117 0x19, 0x00, 0x03, // uuid16 RFCOMM 118 0x08, 0x00, // uint8 %hset_channel% 119 120 0x09, 0x00, 0x05, // uint16 BrowseGroupList 121 0x35, 0x03, // seq8(3) 122 0x19, 0x10, 0x02, // uuid16 PublicBrowseGroup 123 124 0x09, 0x00, 0x06, // uint16 LanguageBaseAttributeIDList 125 0x35, 0x09, // seq8(9) 126 0x09, 0x65, 0x6e, // uint16 0x656e ("en") 127 0x09, 0x00, 0x6a, // uint16 106 (UTF-8) 128 0x09, 0x01, 0x00, // uint16 PrimaryLanguageBaseID 129 130 0x09, 0x00, 0x09, // uint16 BluetoothProfileDescriptorList 131 0x35, 0x08, // seq8(8) 132 0x35, 0x06, // seq8(6) 133 0x19, 0x11, 0x08, // uuid16 Headset 134 0x09, 0x01, 0x00, // uint16 v1.0 135 136 0x09, 0x01, 0x00, // uint16 PrimaryLanguageBaseID + ServiceNameOffset 137 0x25, 0x0d, 0x56, 0x6f, // str8(13) "Voice Gateway" 138 0x69, 0x63, 0x65, 0x20, 139 0x47, 0x61, 0x74, 0x65, 140 0x77, 0x61, 0x79 141 }; 142 143 sdp_data_t hset_record = { hset_data + 0, hset_data + 91 }; 144 sdp_data_t hset_channel = { hset_data + 36, hset_data + 37 }; 145 146 int 147 main(int ac, char *av[]) 148 { 149 struct btsco_info info; 150 const char *mixer; 151 int ch, channel; 152 153 ag = rf = -1; 154 verbose = 0; 155 channel = 0; 156 pidfile = getenv("BTHSET_PIDFILE"); 157 command = getenv("BTHSET_COMMAND"); 158 mixer = getenv("BTHSET_MIXER"); 159 if (mixer == NULL) 160 mixer = "/dev/mixer"; 161 162 while ((ch = getopt(ac, av, "hc:m:p:s:v")) != EOF) { 163 switch (ch) { 164 case 'c': 165 command = optarg; 166 break; 167 168 case 'm': 169 mixer = optarg; 170 break; 171 172 case 'p': 173 pidfile = optarg; 174 break; 175 176 case 's': 177 channel = atoi(optarg); 178 break; 179 180 case 'v': 181 verbose = 1; 182 break; 183 184 case 'h': 185 default: 186 usage(); 187 } 188 } 189 190 if (mixer == NULL) 191 usage(); 192 193 if ((channel < RFCOMM_CHANNEL_MIN || channel > RFCOMM_CHANNEL_MAX) 194 && channel != 0) 195 usage(); 196 197 if (write_pid() < 0) 198 err(EXIT_FAILURE, "%s", pidfile); 199 200 event_init(); 201 202 ringing = 0; 203 evtimer_set(&ring_ev, do_ring, NULL); 204 205 signal_set(&sigusr1_ev, SIGUSR1, do_signal, NULL); 206 if (signal_add(&sigusr1_ev, NULL) < 0) 207 err(EXIT_FAILURE, "SIGUSR1"); 208 209 signal_set(&sigusr2_ev, SIGUSR2, do_signal, NULL); 210 if (signal_add(&sigusr2_ev, NULL) < 0) 211 err(EXIT_FAILURE, "SIGUSR2"); 212 213 signal_set(&sigint_ev, SIGINT, do_signal, NULL); 214 if (signal_add(&sigint_ev, NULL) < 0) 215 err(EXIT_FAILURE, "SIGINT"); 216 217 if (init_mixer(&info, mixer) < 0) 218 err(EXIT_FAILURE, "%s", mixer); 219 220 if (channel == 0 && init_rfcomm(&info) < 0) 221 err(EXIT_FAILURE, "%s", bt_ntoa(&info.raddr, NULL)); 222 223 if (channel && init_server(&info, channel) < 0) 224 err(EXIT_FAILURE, "%d", channel); 225 226 if (verbose) { 227 printf("Headset Info:\n"); 228 printf("\tmixer: %s\n", mixer); 229 printf("\tladdr: %s\n", bt_ntoa(&info.laddr, NULL)); 230 printf("\traddr: %s\n", bt_ntoa(&info.raddr, NULL)); 231 printf("\tchannel: %d\n", info.channel); 232 printf("\tvgs.dev: %d, vgm.dev: %d\n", vgs.dev, vgm.dev); 233 if (channel) printf("\tserver channel: %d\n", channel); 234 } 235 236 event_dispatch(); 237 238 err(EXIT_FAILURE, "event_dispatch"); 239 } 240 241 void 242 usage(void) 243 { 244 245 fprintf(stderr, 246 "usage: %s [-hv] [-c command] [-m mixer] [-p file] [-s channel]\n" 247 "Where:\n" 248 "\t-h display this message\n" 249 "\t-v verbose output\n" 250 "\t-c command command to execute on answer\n" 251 "\t-m mixer mixer path\n" 252 "\t-p file write PID to file\n" 253 "\t-s channel register as audio gateway on channel\n" 254 "", getprogname()); 255 256 exit(EXIT_FAILURE); 257 } 258 259 void 260 do_signal(int s, short ev, void *arg) 261 { 262 263 switch (s) { 264 case SIGUSR1: 265 ringing = 1; /* start ringing */ 266 do_ring(0, 0, NULL); 267 break; 268 269 case SIGUSR2: 270 ringing = 0; 271 break; 272 273 case SIGINT: 274 default: 275 exit(EXIT_SUCCESS); 276 } 277 } 278 279 void 280 do_ring(int s, short ev, void *arg) 281 { 282 static struct timeval tv = { RING_INTERVAL, 0 }; 283 284 if (!ringing) 285 return; 286 287 send_rfcomm("RING"); 288 evtimer_add(&ring_ev, &tv); 289 } 290 291 /* 292 * The mixer device has been twiddled. We check mic and speaker 293 * settings and send the appropriate commands to the headset, 294 */ 295 void 296 do_mixer(int s, short ev, void *arg) 297 { 298 mixer_ctrl_t mc; 299 int level; 300 301 memcpy(&mc, &vgs, sizeof(mc)); 302 if (ioctl(mx, AUDIO_MIXER_READ, &mc) < 0) 303 return; 304 305 if (memcmp(&vgs, &mc, sizeof(mc))) { 306 memcpy(&vgs, &mc, sizeof(mc)); 307 level = mc.un.value.level[AUDIO_MIXER_LEVEL_MONO] / BTSCO_DELTA; 308 309 send_rfcomm("+VGS=%d", level); 310 } 311 312 memcpy(&mc, &vgm, sizeof(mc)); 313 if (ioctl(mx, AUDIO_MIXER_READ, &mc) < 0) 314 return; 315 316 if (memcmp(&vgm, &mc, sizeof(mc))) { 317 memcpy(&vgm, &mc, sizeof(mc)); 318 level = mc.un.value.level[AUDIO_MIXER_LEVEL_MONO] / BTSCO_DELTA; 319 320 send_rfcomm("+VGM=%d", level); 321 } 322 } 323 324 /* 325 * RFCOMM socket event. 326 */ 327 void 328 do_rfcomm(int fd, short ev, void *arg) 329 { 330 char buf[128]; 331 int len, level; 332 333 memset(buf, 0, sizeof(buf)); 334 len = recv(rf, buf, sizeof(buf), 0); 335 if (len <= 0) { 336 if (ag < 0) 337 errx(EXIT_FAILURE, "Connection Lost"); 338 339 event_del(&rfcomm_ev); 340 close(rf); 341 rf = -1; 342 ringing = 0; 343 return; 344 } 345 346 if (verbose) 347 printf("> %.*s\n", len, buf); 348 349 if (len >= 7 && strncmp(buf, "AT+CKPD", 7) == 0) { 350 if (ringing && command != NULL) { 351 if (verbose) 352 printf("%% %s\n", command); 353 354 system(command); 355 } 356 357 ringing = 0; 358 send_rfcomm("OK"); 359 return; 360 } 361 362 if (len >= 7 && strncmp(buf, "AT+VGS=", 7) == 0) { 363 level = atoi(buf + 7); 364 if (level < 0 || level > 15) 365 return; 366 367 vgs.un.value.level[AUDIO_MIXER_LEVEL_MONO] = level * BTSCO_DELTA; 368 if (ioctl(mx, AUDIO_MIXER_WRITE, &vgs) < 0) 369 return; 370 371 send_rfcomm("OK"); 372 return; 373 } 374 375 if (len >= 7 && strncmp(buf, "AT+VGM=", 7) == 0) { 376 level = atoi(buf + 7); 377 if (level < 0 || level > 15) 378 return; 379 380 vgm.un.value.level[AUDIO_MIXER_LEVEL_MONO] = level * BTSCO_DELTA; 381 if (ioctl(mx, AUDIO_MIXER_WRITE, &vgm) < 0) 382 return; 383 384 send_rfcomm("OK"); 385 return; 386 } 387 388 send_rfcomm("ERROR"); 389 } 390 391 /* 392 * got an incoming connection on the AG socket. 393 */ 394 void 395 do_server(int fd, short ev, void *arg) 396 { 397 bdaddr_t *raddr = arg; 398 struct sockaddr_bt addr; 399 socklen_t len; 400 int s; 401 402 assert(raddr != NULL); 403 404 len = sizeof(addr); 405 s = accept(fd, (struct sockaddr *)&addr, &len); 406 if (s < 0) 407 return; 408 409 if (rf >= 0 410 || len != sizeof(addr) 411 || addr.bt_len != sizeof(addr) 412 || addr.bt_family != AF_BLUETOOTH 413 || !bdaddr_same(raddr, &addr.bt_bdaddr)) { 414 close(s); 415 return; 416 } 417 418 rf = s; 419 event_set(&rfcomm_ev, rf, EV_READ | EV_PERSIST, do_rfcomm, NULL); 420 if (event_add(&rfcomm_ev, NULL) < 0) 421 err(EXIT_FAILURE, "rfcomm_ev"); 422 } 423 424 /* 425 * send a message to the RFCOMM socket 426 */ 427 int 428 send_rfcomm(const char *msg, ...) 429 { 430 char buf[128], fmt[128]; 431 va_list ap; 432 int len; 433 434 va_start(ap, msg); 435 436 if (verbose) { 437 snprintf(fmt, sizeof(fmt), "< %s\n", msg); 438 vprintf(fmt, ap); 439 } 440 441 snprintf(fmt, sizeof(fmt), "\r\n%s\r\n", msg); 442 vsnprintf(buf, sizeof(buf), fmt, ap); 443 len = send(rf, buf, strlen(buf), 0); 444 445 va_end(ap); 446 return len; 447 } 448 449 /* 450 * Initialise mixer event 451 */ 452 int 453 init_mixer(struct btsco_info *info, const char *mixer) 454 { 455 456 mx = open(mixer, O_WRONLY, 0); 457 if (mx < 0) 458 return -1; 459 460 if (ioctl(mx, BTSCO_GETINFO, info) < 0) 461 return -1; 462 463 /* get initial vol settings */ 464 memset(&vgs, 0, sizeof(vgs)); 465 vgs.dev = info->vgs; 466 if (ioctl(mx, AUDIO_MIXER_READ, &vgs) < 0) 467 return -1; 468 469 memset(&vgm, 0, sizeof(vgm)); 470 vgm.dev = info->vgm; 471 if (ioctl(mx, AUDIO_MIXER_READ, &vgm) < 0) 472 return -1; 473 474 /* set up mixer changed event */ 475 if (fcntl(mx, F_SETFL, O_ASYNC) < 0) 476 return -1; 477 478 signal_set(&mixer_ev, SIGIO, do_mixer, NULL); 479 if (signal_add(&mixer_ev, NULL) < 0) 480 return -1; 481 482 return 0; 483 } 484 485 /* 486 * Initialise RFCOMM socket 487 */ 488 int 489 init_rfcomm(struct btsco_info *info) 490 { 491 struct sockaddr_bt addr; 492 493 rf = socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM); 494 if (rf < 0) 495 return -1; 496 497 memset(&addr, 0, sizeof(addr)); 498 addr.bt_len = sizeof(addr); 499 addr.bt_family = AF_BLUETOOTH; 500 bdaddr_copy(&addr.bt_bdaddr, &info->laddr); 501 502 if (bind(rf, (struct sockaddr *)&addr, sizeof(addr)) < 0) 503 return -1; 504 505 bdaddr_copy(&addr.bt_bdaddr, &info->raddr); 506 addr.bt_channel = info->channel; 507 508 if (connect(rf, (struct sockaddr *)&addr, sizeof(addr)) < 0) 509 return -1; 510 511 event_set(&rfcomm_ev, rf, EV_READ | EV_PERSIST, do_rfcomm, NULL); 512 if (event_add(&rfcomm_ev, NULL) < 0) 513 return -1; 514 515 return 0; 516 } 517 518 /* 519 * Initialise server socket 520 */ 521 int 522 init_server(struct btsco_info *info, int channel) 523 { 524 struct sockaddr_bt addr; 525 526 ag = socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM); 527 if (ag < 0) 528 return -1; 529 530 memset(&addr, 0, sizeof(addr)); 531 addr.bt_len = sizeof(addr); 532 addr.bt_family = AF_BLUETOOTH; 533 addr.bt_channel = channel; 534 bdaddr_copy(&addr.bt_bdaddr, &info->laddr); 535 536 if (bind(ag, (struct sockaddr *)&addr, sizeof(addr)) < 0) 537 return -1; 538 539 if (listen(ag, 1) < 0) 540 return -1; 541 542 event_set(&server_ev, ag, EV_READ | EV_PERSIST, do_server, &info->raddr); 543 if (event_add(&server_ev, NULL) < 0) 544 return -1; 545 546 sdp_set_uint(&hset_channel, channel); 547 548 ss = sdp_open_local(NULL); 549 if (ss == NULL) 550 return -1; 551 552 if (!sdp_record_insert(ss, &info->laddr, NULL, &hset_record)) { 553 sdp_close(ss); 554 return -1; 555 } 556 557 return 0; 558 } 559 560 void 561 remove_pid(void) 562 { 563 564 if (pidfile == NULL) 565 return; 566 567 unlink(pidfile); 568 } 569 570 int 571 write_pid(void) 572 { 573 char *buf; 574 int fd, len; 575 576 if (pidfile == NULL) 577 return 0; 578 579 fd = open(pidfile, O_WRONLY | O_CREAT | O_TRUNC, 0644); 580 if (fd < 0) 581 return -1; 582 583 len = asprintf(&buf, "%d\n", getpid()); 584 if (len > 0) 585 write(fd, buf, len); 586 587 if (len >= 0 && buf != NULL) 588 free(buf); 589 590 close (fd); 591 592 return atexit(remove_pid); 593 } 594
Indexes created Thu Oct 02 10:09:58 GMT 2025