1/* 2 * hci.c 3 */ 4 5/*- 6 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 7 * 8 * Copyright (c) 2009 Maksim Yevmenkin <m_evmenkin@yahoo.com> 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD$ 33 */ 34 35#include <sys/types.h> 36#include <sys/sysctl.h> 37 38#include <assert.h> 39#define L2CAP_SOCKET_CHECKED 40#include <bluetooth.h> 41#include <inttypes.h> 42#include <stdio.h> 43#include <stdlib.h> 44#include <string.h> 45#include <time.h> 46#include <unistd.h> 47 48#undef MIN 49#define MIN(a, b) (((a) < (b))? (a) : (b)) 50 51static int bt_devany_cb(int s, struct bt_devinfo const *di, void *xdevname); 52static char * bt_dev2node (char const *devname, char *nodename, int nnlen); 53static time_t bt_get_default_hci_command_timeout(void); 54 55int 56bt_devopen(char const *devname) 57{ 58 struct sockaddr_hci ha; 59 bdaddr_t ba; 60 int s; 61 62 if (devname == NULL) { 63 errno = EINVAL; 64 return (-1); 65 } 66 67 memset(&ha, 0, sizeof(ha)); 68 ha.hci_len = sizeof(ha); 69 ha.hci_family = AF_BLUETOOTH; 70 71 if (bt_aton(devname, &ba)) { 72 if (!bt_devname(ha.hci_node, &ba)) 73 return (-1); 74 } else if (bt_dev2node(devname, ha.hci_node, 75 sizeof(ha.hci_node)) == NULL) { 76 errno = ENXIO; 77 return (-1); 78 } 79 80 s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_HCI); 81 if (s < 0) 82 return (-1); 83 84 if (bind(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 || 85 connect(s, (struct sockaddr *) &ha, sizeof(ha)) < 0) { 86 close(s); 87 return (-1); 88 } 89 90 return (s); 91} 92 93int 94bt_devclose(int s) 95{ 96 return (close(s)); 97} 98 99int 100bt_devsend(int s, uint16_t opcode, void *param, size_t plen) 101{ 102 ng_hci_cmd_pkt_t h; 103 struct iovec iv[2]; 104 int ivn; 105 106 if ((plen == 0 && param != NULL) || 107 (plen > 0 && param == NULL) || 108 plen > UINT8_MAX) { 109 errno = EINVAL; 110 return (-1); 111 } 112 113 iv[0].iov_base = &h; 114 iv[0].iov_len = sizeof(h); 115 ivn = 1; 116 117 h.type = NG_HCI_CMD_PKT; 118 h.opcode = htole16(opcode); 119 if (plen > 0) { 120 h.length = plen; 121 122 iv[1].iov_base = param; 123 iv[1].iov_len = plen; 124 ivn = 2; 125 } else 126 h.length = 0; 127 128 while (writev(s, iv, ivn) < 0) { 129 if (errno == EAGAIN || errno == EINTR) 130 continue; 131 132 return (-1); 133 } 134 135 return (0); 136} 137 138ssize_t 139bt_devrecv(int s, void *buf, size_t size, time_t to) 140{ 141 ssize_t n; 142 143 if (buf == NULL || size == 0) { 144 errno = EINVAL; 145 return (-1); 146 } 147 148 if (to >= 0) { 149 fd_set rfd; 150 struct timeval tv; 151 152 FD_ZERO(&rfd); 153 FD_SET(s, &rfd); 154 155 tv.tv_sec = to; 156 tv.tv_usec = 0; 157 158 while ((n = select(s + 1, &rfd, NULL, NULL, &tv)) < 0) { 159 if (errno == EAGAIN || errno == EINTR) 160 continue; 161 162 return (-1); 163 } 164 165 if (n == 0) { 166 errno = ETIMEDOUT; 167 return (-1); 168 } 169 170 assert(FD_ISSET(s, &rfd)); 171 } 172 173 while ((n = read(s, buf, size)) < 0) { 174 if (errno == EAGAIN || errno == EINTR) 175 continue; 176 177 return (-1); 178 } 179 180 switch (*((uint8_t *) buf)) { 181 case NG_HCI_CMD_PKT: { 182 ng_hci_cmd_pkt_t *h = (ng_hci_cmd_pkt_t *) buf; 183 184 if (n >= sizeof(*h) && n == (sizeof(*h) + h->length)) 185 return (n); 186 } break; 187 188 case NG_HCI_ACL_DATA_PKT: { 189 ng_hci_acldata_pkt_t *h = (ng_hci_acldata_pkt_t *) buf; 190 191 if (n >= sizeof(*h) && n == (sizeof(*h) + le16toh(h->length))) 192 return (n); 193 } break; 194 195 case NG_HCI_SCO_DATA_PKT: { 196 ng_hci_scodata_pkt_t *h = (ng_hci_scodata_pkt_t *) buf; 197 198 if (n >= sizeof(*h) && n == (sizeof(*h) + h->length)) 199 return (n); 200 } break; 201 202 case NG_HCI_EVENT_PKT: { 203 ng_hci_event_pkt_t *h = (ng_hci_event_pkt_t *) buf; 204 205 if (n >= sizeof(*h) && n == (sizeof(*h) + h->length)) 206 return (n); 207 } break; 208 } 209 210 errno = EIO; 211 return (-1); 212} 213 214int 215bt_devreq(int s, struct bt_devreq *r, time_t to) 216{ 217 uint8_t buf[320]; /* more than enough */ 218 ng_hci_event_pkt_t *e = (ng_hci_event_pkt_t *) buf; 219 ng_hci_command_compl_ep *cc = (ng_hci_command_compl_ep *)(e+1); 220 ng_hci_command_status_ep *cs = (ng_hci_command_status_ep*)(e+1); 221 struct bt_devfilter old, new; 222 time_t t_end; 223 uint16_t opcode; 224 ssize_t n; 225 int error; 226 227 if (s < 0 || r == NULL || to < 0) { 228 errno = EINVAL; 229 return (-1); 230 } 231 232 if ((r->rlen == 0 && r->rparam != NULL) || 233 (r->rlen > 0 && r->rparam == NULL)) { 234 errno = EINVAL; 235 return (-1); 236 } 237 238 memset(&new, 0, sizeof(new)); 239 bt_devfilter_pkt_set(&new, NG_HCI_EVENT_PKT); 240 bt_devfilter_evt_set(&new, NG_HCI_EVENT_COMMAND_COMPL); 241 bt_devfilter_evt_set(&new, NG_HCI_EVENT_COMMAND_STATUS); 242 if (r->event != 0) 243 bt_devfilter_evt_set(&new, r->event); 244 245 if (bt_devfilter(s, &new, &old) < 0) 246 return (-1); 247 248 error = 0; 249 250 n = bt_devsend(s, r->opcode, r->cparam, r->clen); 251 if (n < 0) { 252 error = errno; 253 goto out; 254 } 255 256 opcode = htole16(r->opcode); 257 t_end = time(NULL) + to; 258 259 do { 260 to = t_end - time(NULL); 261 if (to < 0) 262 to = 0; 263 264 n = bt_devrecv(s, buf, sizeof(buf), to); 265 if (n < 0) { 266 error = errno; 267 goto out; 268 } 269 270 if (e->type != NG_HCI_EVENT_PKT) { 271 error = EIO; 272 goto out; 273 } 274 275 n -= sizeof(*e); 276 277 switch (e->event) { 278 case NG_HCI_EVENT_COMMAND_COMPL: 279 if (cc->opcode == opcode) { 280 n -= sizeof(*cc); 281 282 if (r->rlen >= n) { 283 r->rlen = n; 284 memcpy(r->rparam, cc + 1, r->rlen); 285 } 286 287 goto out; 288 } 289 break; 290 291 case NG_HCI_EVENT_COMMAND_STATUS: 292 if (cs->opcode == opcode) { 293 if (r->event != NG_HCI_EVENT_COMMAND_STATUS) { 294 if (cs->status != 0) { 295 error = EIO; 296 goto out; 297 } 298 } else { 299 if (r->rlen >= n) { 300 r->rlen = n; 301 memcpy(r->rparam, cs, r->rlen); 302 } 303 304 goto out; 305 } 306 } 307 break; 308 309 default: 310 if (e->event == r->event) { 311 if (r->rlen >= n) { 312 r->rlen = n; 313 memcpy(r->rparam, e + 1, r->rlen); 314 } 315 316 goto out; 317 } 318 break; 319 } 320 } while (to > 0); 321 322 error = ETIMEDOUT; 323out: 324 bt_devfilter(s, &old, NULL); 325 326 if (error != 0) { 327 errno = error; 328 return (-1); 329 } 330 331 return (0); 332} 333 334int 335bt_devfilter(int s, struct bt_devfilter const *new, struct bt_devfilter *old) 336{ 337 struct ng_btsocket_hci_raw_filter f; 338 socklen_t len; 339 340 if (new == NULL && old == NULL) { 341 errno = EINVAL; 342 return (-1); 343 } 344 345 if (old != NULL) { 346 len = sizeof(f); 347 if (getsockopt(s, SOL_HCI_RAW, SO_HCI_RAW_FILTER, &f, &len) < 0) 348 return (-1); 349 350 memset(old, 0, sizeof(*old)); 351 memcpy(old->packet_mask, &f.packet_mask, 352 MIN(sizeof(old->packet_mask), sizeof(f.packet_mask))); 353 memcpy(old->event_mask, &f.event_mask, 354 MIN(sizeof(old->event_mask), sizeof(f.packet_mask))); 355 } 356 357 if (new != NULL) { 358 memset(&f, 0, sizeof(f)); 359 memcpy(&f.packet_mask, new->packet_mask, 360 MIN(sizeof(f.packet_mask), sizeof(new->event_mask))); 361 memcpy(&f.event_mask, new->event_mask, 362 MIN(sizeof(f.event_mask), sizeof(new->event_mask))); 363 364 len = sizeof(f); 365 if (setsockopt(s, SOL_HCI_RAW, SO_HCI_RAW_FILTER, &f, len) < 0) 366 return (-1); 367 } 368 369 return (0); 370} 371 372void 373bt_devfilter_pkt_set(struct bt_devfilter *filter, uint8_t type) 374{ 375 bit_set(filter->packet_mask, type - 1); 376} 377 378void 379bt_devfilter_pkt_clr(struct bt_devfilter *filter, uint8_t type) 380{ 381 bit_clear(filter->packet_mask, type - 1); 382} 383 384int 385bt_devfilter_pkt_tst(struct bt_devfilter const *filter, uint8_t type) 386{ 387 return (bit_test(filter->packet_mask, type - 1)); 388} 389 390void 391bt_devfilter_evt_set(struct bt_devfilter *filter, uint8_t event) 392{ 393 bit_set(filter->event_mask, event - 1); 394} 395 396void 397bt_devfilter_evt_clr(struct bt_devfilter *filter, uint8_t event) 398{ 399 bit_clear(filter->event_mask, event - 1); 400} 401 402int 403bt_devfilter_evt_tst(struct bt_devfilter const *filter, uint8_t event) 404{ 405 return (bit_test(filter->event_mask, event - 1)); 406} 407 408int 409bt_devinquiry(char const *devname, time_t length, int num_rsp, 410 struct bt_devinquiry **ii) 411{ 412 uint8_t buf[320]; 413 char _devname[HCI_DEVNAME_SIZE]; 414 struct bt_devfilter f; 415 ng_hci_inquiry_cp *cp = (ng_hci_inquiry_cp *) buf; 416 ng_hci_event_pkt_t *e = (ng_hci_event_pkt_t *) buf; 417 ng_hci_inquiry_result_ep *ep = (ng_hci_inquiry_result_ep *)(e+1); 418 ng_hci_inquiry_response *ir; 419 struct bt_devinquiry *i; 420 int s, n; 421 422 if (ii == NULL) { 423 errno = EINVAL; 424 return (-1); 425 } 426 427 if (devname == NULL) { 428 memset(_devname, 0, sizeof(_devname)); 429 devname = _devname; 430 431 n = bt_devenum(bt_devany_cb, _devname); 432 if (n <= 0) { 433 if (n == 0) 434 *ii = NULL; 435 436 return (n); 437 } 438 } 439 440 s = bt_devopen(devname); 441 if (s < 0) 442 return (-1); 443 444 if (bt_devfilter(s, NULL, &f) < 0) { 445 bt_devclose(s); 446 return (-1); 447 } 448 449 bt_devfilter_evt_set(&f, NG_HCI_EVENT_INQUIRY_COMPL); 450 bt_devfilter_evt_set(&f, NG_HCI_EVENT_INQUIRY_RESULT); 451 452 if (bt_devfilter(s, &f, NULL) < 0) { 453 bt_devclose(s); 454 return (-1); 455 } 456 457 /* Always use GIAC LAP */ 458 cp->lap[0] = 0x33; 459 cp->lap[1] = 0x8b; 460 cp->lap[2] = 0x9e; 461 462 /* 463 * Calculate inquire length in 1.28 second units 464 * v2.x specification says that 1.28 -> 61.44 seconds 465 * range is acceptable 466 */ 467 468 if (length <= 0) 469 length = 5; 470 else if (length == 1) 471 length = 2; 472 else if (length > 62) 473 length = 62; 474 475 cp->inquiry_length = (uint8_t)((length * 100) / 128); 476 477 if (num_rsp <= 0 || num_rsp > 255) 478 num_rsp = 8; 479 cp->num_responses = (uint8_t) num_rsp; 480 481 i = *ii = calloc(num_rsp, sizeof(struct bt_devinquiry)); 482 if (i == NULL) { 483 bt_devclose(s); 484 errno = ENOMEM; 485 return (-1); 486 } 487 488 if (bt_devsend(s, 489 NG_HCI_OPCODE(NG_HCI_OGF_LINK_CONTROL, NG_HCI_OCF_INQUIRY), 490 cp, sizeof(*cp)) < 0) { 491 free(i); 492 bt_devclose(s); 493 return (-1); 494 } 495 496wait_for_more: 497 498 n = bt_devrecv(s, buf, sizeof(buf), length); 499 if (n < 0) { 500 free(i); 501 bt_devclose(s); 502 return (-1); 503 } 504 505 if (n < sizeof(ng_hci_event_pkt_t)) { 506 free(i); 507 bt_devclose(s); 508 errno = EIO; 509 return (-1); 510 } 511 512 switch (e->event) { 513 case NG_HCI_EVENT_INQUIRY_COMPL: 514 break; 515 516 case NG_HCI_EVENT_INQUIRY_RESULT: 517 ir = (ng_hci_inquiry_response *)(ep + 1); 518 519 for (n = 0; n < MIN(ep->num_responses, num_rsp); n ++) { 520 bdaddr_copy(&i->bdaddr, &ir->bdaddr); 521 i->pscan_rep_mode = ir->page_scan_rep_mode; 522 i->pscan_period_mode = ir->page_scan_period_mode; 523 memcpy(i->dev_class, ir->uclass, sizeof(i->dev_class)); 524 i->clock_offset = le16toh(ir->clock_offset); 525 526 ir ++; 527 i ++; 528 num_rsp --; 529 } 530 /* FALLTHROUGH */ 531 532 default: 533 goto wait_for_more; 534 /* NOT REACHED */ 535 } 536 537 bt_devclose(s); 538 539 return (i - *ii); 540} 541 542char * 543bt_devremote_name(char const *devname, const bdaddr_t *remote, time_t to, 544 uint16_t clk_off, uint8_t ps_rep_mode, uint8_t ps_mode) 545{ 546 char _devname[HCI_DEVNAME_SIZE]; 547 struct bt_devreq r; 548 ng_hci_remote_name_req_cp cp; 549 ng_hci_remote_name_req_compl_ep ep; 550 int s; 551 char *remote_name = NULL; 552 553 if (remote == NULL || to < 0) { 554 errno = EINVAL; 555 goto out; 556 } 557 558 if (to == 0) { 559 to = bt_get_default_hci_command_timeout(); 560 if (to < 0) 561 goto out; 562 } 563 to++; 564 565 if (devname == NULL) { 566 memset(_devname, 0, sizeof(_devname)); 567 devname = _devname; 568 if (bt_devenum(bt_devany_cb, _devname) <= 0) 569 goto out; 570 } 571 572 memset(&r, 0, sizeof(r)); 573 memset(&cp, 0, sizeof(cp)); 574 memset(&ep, 0, sizeof(ep)); 575 cp.clock_offset = htole16(clk_off); 576 cp.page_scan_rep_mode = ps_rep_mode; 577 cp.page_scan_mode = ps_mode; 578 bdaddr_copy(&cp.bdaddr, remote); 579 r.opcode = NG_HCI_OPCODE(NG_HCI_OGF_LINK_CONTROL, 580 NG_HCI_OCF_REMOTE_NAME_REQ); 581 r.event = NG_HCI_EVENT_REMOTE_NAME_REQ_COMPL; 582 r.cparam = &cp; 583 r.clen = sizeof(cp); 584 r.rparam = &ep; 585 r.rlen = sizeof(ep); 586 587 s = bt_devopen(devname); 588 if (s < 0) 589 goto out; 590 591 if (bt_devreq(s, &r, to) == 0 || ep.status == 0x00) 592 remote_name = strndup((const char *)&ep.name, sizeof(ep.name)); 593 594 bt_devclose(s); 595out: 596 return (remote_name); 597} 598 599int 600bt_devinfo(struct bt_devinfo *di) 601{ 602 union { 603 struct ng_btsocket_hci_raw_node_state r0; 604 struct ng_btsocket_hci_raw_node_bdaddr r1; 605 struct ng_btsocket_hci_raw_node_features r2; 606 struct ng_btsocket_hci_raw_node_buffer r3; 607 struct ng_btsocket_hci_raw_node_stat r4; 608 struct ng_btsocket_hci_raw_node_link_policy_mask r5; 609 struct ng_btsocket_hci_raw_node_packet_mask r6; 610 struct ng_btsocket_hci_raw_node_role_switch r7; 611 struct ng_btsocket_hci_raw_node_debug r8; 612 } rp; 613 struct sockaddr_hci ha; 614 socklen_t halen; 615 int s, rval; 616 617 if (di == NULL) { 618 errno = EINVAL; 619 return (-1); 620 } 621 622 s = bt_devopen(di->devname); 623 if (s < 0) 624 return (-1); 625 626 rval = -1; 627 628 halen = sizeof(ha); 629 if (getsockname(s, (struct sockaddr *) &ha, &halen) < 0) 630 goto bad; 631 strlcpy(di->devname, ha.hci_node, sizeof(di->devname)); 632 633 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_STATE, &rp.r0, sizeof(rp.r0)) < 0) 634 goto bad; 635 di->state = rp.r0.state; 636 637 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_BDADDR, &rp.r1, sizeof(rp.r1)) < 0) 638 goto bad; 639 bdaddr_copy(&di->bdaddr, &rp.r1.bdaddr); 640 641 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_FEATURES, &rp.r2, sizeof(rp.r2)) < 0) 642 goto bad; 643 memcpy(di->features, rp.r2.features, sizeof(di->features)); 644 645 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_BUFFER, &rp.r3, sizeof(rp.r3)) < 0) 646 goto bad; 647 di->cmd_free = rp.r3.buffer.cmd_free; 648 di->sco_size = rp.r3.buffer.sco_size; 649 di->sco_pkts = rp.r3.buffer.sco_pkts; 650 di->sco_free = rp.r3.buffer.sco_free; 651 di->acl_size = rp.r3.buffer.acl_size; 652 di->acl_pkts = rp.r3.buffer.acl_pkts; 653 di->acl_free = rp.r3.buffer.acl_free; 654 655 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_STAT, &rp.r4, sizeof(rp.r4)) < 0) 656 goto bad; 657 di->cmd_sent = rp.r4.stat.cmd_sent; 658 di->evnt_recv = rp.r4.stat.evnt_recv; 659 di->acl_recv = rp.r4.stat.acl_recv; 660 di->acl_sent = rp.r4.stat.acl_sent; 661 di->sco_recv = rp.r4.stat.sco_recv; 662 di->sco_sent = rp.r4.stat.sco_sent; 663 di->bytes_recv = rp.r4.stat.bytes_recv; 664 di->bytes_sent = rp.r4.stat.bytes_sent; 665 666 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_LINK_POLICY_MASK, 667 &rp.r5, sizeof(rp.r5)) < 0) 668 goto bad; 669 di->link_policy_info = rp.r5.policy_mask; 670 671 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_PACKET_MASK, 672 &rp.r6, sizeof(rp.r6)) < 0) 673 goto bad; 674 di->packet_type_info = rp.r6.packet_mask; 675 676 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_ROLE_SWITCH, 677 &rp.r7, sizeof(rp.r7)) < 0) 678 goto bad; 679 di->role_switch_info = rp.r7.role_switch; 680 681 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_DEBUG, &rp.r8, sizeof(rp.r8)) < 0) 682 goto bad; 683 di->debug = rp.r8.debug; 684 685 rval = 0; 686bad: 687 bt_devclose(s); 688 689 return (rval); 690} 691 692int 693bt_devenum(bt_devenum_cb_t cb, void *arg) 694{ 695 struct ng_btsocket_hci_raw_node_list_names rp; 696 struct bt_devinfo di; 697 struct sockaddr_hci ha; 698 int s, i, count; 699 700 rp.num_names = HCI_DEVMAX; 701 rp.names = (struct nodeinfo *) calloc(rp.num_names, 702 sizeof(struct nodeinfo)); 703 if (rp.names == NULL) { 704 errno = ENOMEM; 705 return (-1); 706 } 707 708 memset(&ha, 0, sizeof(ha)); 709 ha.hci_len = sizeof(ha); 710 ha.hci_family = AF_BLUETOOTH; 711 ha.hci_node[0] = 'x'; 712 713 s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_HCI); 714 if (s < 0) { 715 free(rp.names); 716 717 return (-1); 718 } 719 720 if (bind(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 || 721 connect(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 || 722 ioctl(s, SIOC_HCI_RAW_NODE_LIST_NAMES, &rp, sizeof(rp)) < 0) { 723 close(s); 724 free(rp.names); 725 726 return (-1); 727 } 728 729 for (count = 0, i = 0; i < rp.num_names; i ++) { 730 strlcpy(di.devname, rp.names[i].name, sizeof(di.devname)); 731 if (bt_devinfo(&di) < 0) 732 continue; 733 734 count ++; 735 736 if (cb == NULL) 737 continue; 738 739 strlcpy(ha.hci_node, rp.names[i].name, sizeof(ha.hci_node)); 740 if (bind(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 || 741 connect(s, (struct sockaddr *) &ha, sizeof(ha)) < 0) 742 continue; 743 744 if ((*cb)(s, &di, arg) > 0) 745 break; 746 } 747 748 close (s); 749 free(rp.names); 750 751 return (count); 752} 753 754static int 755bt_devany_cb(int s, struct bt_devinfo const *di, void *xdevname) 756{ 757 strlcpy((char *) xdevname, di->devname, HCI_DEVNAME_SIZE); 758 return (1); 759} 760 761static char * 762bt_dev2node(char const *devname, char *nodename, int nnlen) 763{ 764 static char const * bt_dev_prefix[] = { 765 "btccc", /* 3Com Bluetooth PC-CARD */ 766 "h4", /* UART/serial Bluetooth devices */ 767 "ubt", /* Bluetooth USB devices */ 768 NULL /* should be last */ 769 }; 770 771 static char _nodename[HCI_DEVNAME_SIZE]; 772 char const **p; 773 char *ep; 774 int plen, unit; 775 776 if (nodename == NULL) { 777 nodename = _nodename; 778 nnlen = HCI_DEVNAME_SIZE; 779 } 780 781 for (p = bt_dev_prefix; *p != NULL; p ++) { 782 plen = strlen(*p); 783 if (strncmp(devname, *p, plen) != 0) 784 continue; 785 786 unit = strtoul(devname + plen, &ep, 10); 787 if (*ep != '\0' && 788 strcmp(ep, "hci") != 0 && 789 strcmp(ep, "l2cap") != 0) 790 return (NULL); /* can't make sense of device name */ 791 792 snprintf(nodename, nnlen, "%s%uhci", *p, unit); 793 794 return (nodename); 795 } 796 797 return (NULL); 798} 799 800static time_t 801bt_get_default_hci_command_timeout(void) 802{ 803 int to; 804 size_t to_size = sizeof(to); 805 806 if (sysctlbyname("net.bluetooth.hci.command_timeout", 807 &to, &to_size, NULL, 0) < 0) 808 return (-1); 809 810 /* Should not happen */ 811 if (to <= 0) { 812 errno = ERANGE; 813 return (-1); 814 } 815 816 return ((time_t)to); 817} 818