1 /* 2 * 3 * BlueZ - Bluetooth protocol stack for Linux 4 * 5 * Copyright (C) 2003-2010 Marcel Holtmann <marcel (at) holtmann.org> 6 * 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 21 * 22 */ 23 24 #ifdef HAVE_CONFIG_H 25 #include <config.h> 26 #endif 27 28 #include <stdio.h> 29 #include <errno.h> 30 #include <stdlib.h> 31 #include <string.h> 32 #include <syslog.h> 33 #include <limits.h> 34 #include <sys/stat.h> 35 #include <sys/socket.h> 36 37 #include <bluetooth/bluetooth.h> 38 #include <bluetooth/l2cap.h> 39 #include <bluetooth/sdp.h> 40 #include <bluetooth/sdp_lib.h> 41 #include <bluetooth/hidp.h> 42 #include <bluetooth/bnep.h> 43 44 #include "textfile.h" 45 #include "sdp.h" 46 47 static sdp_record_t *record = NULL; 48 static sdp_session_t *session = NULL; 49 50 static void add_lang_attr(sdp_record_t *r) 51 { 52 sdp_lang_attr_t base_lang; 53 sdp_list_t *langs = 0; 54 55 /* UTF-8 MIBenum (http://www.iana.org/assignments/character-sets) */ 56 base_lang.code_ISO639 = (0x65 << 8) | 0x6e; 57 base_lang.encoding = 106; 58 base_lang.base_offset = SDP_PRIMARY_LANG_BASE; 59 langs = sdp_list_append(0, &base_lang); 60 sdp_set_lang_attr(r, langs); 61 sdp_list_free(langs, 0); 62 } 63 64 static void epox_endian_quirk(unsigned char *data, int size) 65 { 66 /* USAGE_PAGE (Keyboard) 05 07 67 * USAGE_MINIMUM (0) 19 00 68 * USAGE_MAXIMUM (65280) 2A 00 FF <= must be FF 00 69 * LOGICAL_MINIMUM (0) 15 00 70 * LOGICAL_MAXIMUM (65280) 26 00 FF <= must be FF 00 71 */ 72 unsigned char pattern[] = { 0x05, 0x07, 0x19, 0x00, 0x2a, 0x00, 0xff, 73 0x15, 0x00, 0x26, 0x00, 0xff }; 74 unsigned int i; 75 76 if (!data) 77 return; 78 79 for (i = 0; i < size - sizeof(pattern); i++) { 80 if (!memcmp(data + i, pattern, sizeof(pattern))) { 81 data[i + 5] = 0xff; 82 data[i + 6] = 0x00; 83 data[i + 10] = 0xff; 84 data[i + 11] = 0x00; 85 } 86 } 87 } 88 89 static int store_device_info(const bdaddr_t *src, const bdaddr_t *dst, struct hidp_connadd_req *req) 90 { 91 char filename[PATH_MAX + 1], addr[18], *str, *desc; 92 int i, err, size; 93 94 ba2str(src, addr); 95 create_name(filename, PATH_MAX, STORAGEDIR, addr, "hidd"); 96 97 size = 15 + 3 + 3 + 5 + (req->rd_size * 2) + 1 + 9 + strlen(req->name) + 2; 98 str = malloc(size); 99 if (!str) 100 return -ENOMEM; 101 102 desc = malloc((req->rd_size * 2) + 1); 103 if (!desc) { 104 free(str); 105 return -ENOMEM; 106 } 107 108 memset(desc, 0, (req->rd_size * 2) + 1); 109 for (i = 0; i < req->rd_size; i++) 110 sprintf(desc + (i * 2), "%2.2X", req->rd_data[i]); 111 112 snprintf(str, size - 1, "%04X:%04X:%04X %02X %02X %04X %s %08X %s", 113 req->vendor, req->product, req->version, 114 req->subclass, req->country, req->parser, desc, 115 req->flags, req->name); 116 117 free(desc); 118 119 create_file(filename, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH); 120 121 ba2str(dst, addr); 122 err = textfile_put(filename, addr, str); 123 124 free(str); 125 126 return err; 127 } 128 129 int get_stored_device_info(const bdaddr_t *src, const bdaddr_t *dst, struct hidp_connadd_req *req) 130 { 131 char filename[PATH_MAX + 1], addr[18], tmp[3], *str, *desc; 132 unsigned int vendor, product, version, subclass, country, parser, pos; 133 int i; 134 135 desc = malloc(4096); 136 if (!desc) 137 return -ENOMEM; 138 139 memset(desc, 0, 4096); 140 141 ba2str(src, addr); 142 create_name(filename, PATH_MAX, STORAGEDIR, addr, "hidd"); 143 144 ba2str(dst, addr); 145 str = textfile_get(filename, addr); 146 if (!str) { 147 free(desc); 148 return -EIO; 149 } 150 151 sscanf(str, "%04X:%04X:%04X %02X %02X %04X %4095s %08X %n", 152 &vendor, &product, &version, &subclass, &country, 153 &parser, desc, &req->flags, &pos); 154 155 156 req->vendor = vendor; 157 req->product = product; 158 req->version = version; 159 req->subclass = subclass; 160 req->country = country; 161 req->parser = parser; 162 163 snprintf(req->name, 128, "%s", str + pos); 164 165 free(str); 166 req->rd_size = strlen(desc) / 2; 167 req->rd_data = malloc(req->rd_size); 168 if (!req->rd_data) { 169 free(desc); 170 return -ENOMEM; 171 } 172 173 memset(tmp, 0, sizeof(tmp)); 174 for (i = 0; i < req->rd_size; i++) { 175 memcpy(tmp, desc + (i * 2), 2); 176 req->rd_data[i] = (uint8_t) strtol(tmp, NULL, 16); 177 } 178 179 free(desc); 180 181 return 0; 182 } 183 184 int get_sdp_device_info(const bdaddr_t *src, const bdaddr_t *dst, struct hidp_connadd_req *req) 185 { 186 struct sockaddr_l2 addr; 187 socklen_t addrlen; 188 bdaddr_t bdaddr; 189 uint32_t range = 0x0000ffff; 190 sdp_session_t *s; 191 sdp_list_t *search, *attrid, *pnp_rsp, *hid_rsp; 192 sdp_record_t *rec; 193 sdp_data_t *pdlist, *pdlist2; 194 uuid_t svclass; 195 int err; 196 197 s = sdp_connect(src, dst, SDP_RETRY_IF_BUSY | SDP_WAIT_ON_CLOSE); 198 if (!s) 199 return -1; 200 201 sdp_uuid16_create(&svclass, PNP_INFO_SVCLASS_ID); 202 search = sdp_list_append(NULL, &svclass); 203 attrid = sdp_list_append(NULL, &range); 204 205 err = sdp_service_search_attr_req(s, search, 206 SDP_ATTR_REQ_RANGE, attrid, &pnp_rsp); 207 208 sdp_list_free(search, NULL); 209 sdp_list_free(attrid, NULL); 210 211 sdp_uuid16_create(&svclass, HID_SVCLASS_ID); 212 search = sdp_list_append(NULL, &svclass); 213 attrid = sdp_list_append(NULL, &range); 214 215 err = sdp_service_search_attr_req(s, search, 216 SDP_ATTR_REQ_RANGE, attrid, &hid_rsp); 217 218 sdp_list_free(search, NULL); 219 sdp_list_free(attrid, NULL); 220 221 memset(&addr, 0, sizeof(addr)); 222 addrlen = sizeof(addr); 223 224 if (getsockname(s->sock, (struct sockaddr *) &addr, &addrlen) < 0) 225 bacpy(&bdaddr, src); 226 else 227 bacpy(&bdaddr, &addr.l2_bdaddr); 228 229 sdp_close(s); 230 231 if (err || !hid_rsp) 232 return -1; 233 234 if (pnp_rsp) { 235 rec = (sdp_record_t *) pnp_rsp->data; 236 237 pdlist = sdp_data_get(rec, 0x0201); 238 req->vendor = pdlist ? pdlist->val.uint16 : 0x0000; 239 240 pdlist = sdp_data_get(rec, 0x0202); 241 req->product = pdlist ? pdlist->val.uint16 : 0x0000; 242 243 pdlist = sdp_data_get(rec, 0x0203); 244 req->version = pdlist ? pdlist->val.uint16 : 0x0000; 245 246 sdp_record_free(rec); 247 } 248 249 rec = (sdp_record_t *) hid_rsp->data; 250 251 pdlist2 = sdp_data_get(rec, 0x0100); 252 if (pdlist2) 253 strncpy(req->name, pdlist2->val.str, sizeof(req->name) - 1); 254 else { 255 pdlist = sdp_data_get(rec, 0x0101); 256 pdlist2 = sdp_data_get(rec, 0x0102); 257 if (pdlist) { 258 if (pdlist2) { 259 if (strncmp(pdlist->val.str, pdlist2->val.str, 5)) { 260 strncpy(req->name, pdlist2->val.str, sizeof(req->name) - 1); 261 strcat(req->name, " "); 262 } 263 strncat(req->name, pdlist->val.str, 264 sizeof(req->name) - strlen(req->name)); 265 } else 266 strncpy(req->name, pdlist->val.str, sizeof(req->name) - 1); 267 } 268 } 269 270 pdlist = sdp_data_get(rec, 0x0201); 271 req->parser = pdlist ? pdlist->val.uint16 : 0x0100; 272 273 pdlist = sdp_data_get(rec, 0x0202); 274 req->subclass = pdlist ? pdlist->val.uint8 : 0; 275 276 pdlist = sdp_data_get(rec, 0x0203); 277 req->country = pdlist ? pdlist->val.uint8 : 0; 278 279 pdlist = sdp_data_get(rec, 0x0206); 280 if (pdlist) { 281 pdlist = pdlist->val.dataseq; 282 pdlist = pdlist->val.dataseq; 283 pdlist = pdlist->next; 284 285 req->rd_data = malloc(pdlist->unitSize); 286 if (req->rd_data) { 287 memcpy(req->rd_data, (unsigned char *) pdlist->val.str, pdlist->unitSize); 288 req->rd_size = pdlist->unitSize; 289 epox_endian_quirk(req->rd_data, req->rd_size); 290 } 291 } 292 293 sdp_record_free(rec); 294 295 if (bacmp(&bdaddr, BDADDR_ANY)) 296 store_device_info(&bdaddr, dst, req); 297 298 return 0; 299 } 300 301 int get_alternate_device_info(const bdaddr_t *src, const bdaddr_t *dst, uint16_t *uuid, uint8_t *channel, char *name, size_t len) 302 { 303 uint16_t attr1 = SDP_ATTR_PROTO_DESC_LIST; 304 uint16_t attr2 = SDP_ATTR_SVCNAME_PRIMARY; 305 sdp_session_t *s; 306 sdp_list_t *search, *attrid, *rsp; 307 uuid_t svclass; 308 int err; 309 310 s = sdp_connect(src, dst, SDP_RETRY_IF_BUSY | SDP_WAIT_ON_CLOSE); 311 if (!s) 312 return -1; 313 314 sdp_uuid16_create(&svclass, HEADSET_SVCLASS_ID); 315 search = sdp_list_append(NULL, &svclass); 316 attrid = sdp_list_append(NULL, &attr1); 317 attrid = sdp_list_append(attrid, &attr2); 318 319 err = sdp_service_search_attr_req(s, search, 320 SDP_ATTR_REQ_INDIVIDUAL, attrid, &rsp); 321 322 sdp_list_free(search, NULL); 323 sdp_list_free(attrid, NULL); 324 325 if (err <= 0) { 326 sdp_uuid16_create(&svclass, SERIAL_PORT_SVCLASS_ID); 327 search = sdp_list_append(NULL, &svclass); 328 attrid = sdp_list_append(NULL, &attr1); 329 attrid = sdp_list_append(attrid, &attr2); 330 331 err = sdp_service_search_attr_req(s, search, 332 SDP_ATTR_REQ_INDIVIDUAL, attrid, &rsp); 333 334 sdp_list_free(search, NULL); 335 sdp_list_free(attrid, NULL); 336 337 if (err < 0) { 338 sdp_close(s); 339 return err; 340 } 341 342 if (uuid) 343 *uuid = SERIAL_PORT_SVCLASS_ID; 344 } else { 345 if (uuid) 346 *uuid = HEADSET_SVCLASS_ID; 347 } 348 349 sdp_close(s); 350 351 for (; rsp; rsp = rsp->next) { 352 sdp_record_t *rec = (sdp_record_t *) rsp->data; 353 sdp_list_t *protos; 354 355 sdp_get_service_name(rec, name, len); 356 357 if (!sdp_get_access_protos(rec, &protos)) { 358 uint8_t ch = sdp_get_proto_port(protos, RFCOMM_UUID); 359 if (ch > 0) { 360 if (channel) 361 *channel = ch; 362 return 0; 363 } 364 } 365 366 sdp_record_free(rec); 367 } 368 369 return -EIO; 370 } 371 372 void bnep_sdp_unregister(void) 373 { 374 if (record && sdp_record_unregister(session, record)) 375 syslog(LOG_ERR, "Service record unregistration failed."); 376 377 sdp_close(session); 378 } 379 380 int bnep_sdp_register(bdaddr_t *device, uint16_t role) 381 { 382 sdp_list_t *svclass, *pfseq, *apseq, *root, *aproto; 383 uuid_t root_uuid, pan, l2cap, bnep; 384 sdp_profile_desc_t profile[1]; 385 sdp_list_t *proto[2]; 386 sdp_data_t *v, *p; 387 uint16_t psm = 15, version = 0x0100; 388 uint16_t security_desc = 0; 389 uint16_t net_access_type = 0xfffe; 390 uint32_t max_net_access_rate = 0; 391 char *name = "BlueZ PAN"; 392 char *desc = "BlueZ PAN Service"; 393 int status; 394 395 session = sdp_connect(BDADDR_ANY, BDADDR_LOCAL, 0); 396 if (!session) { 397 syslog(LOG_ERR, "Failed to connect to the local SDP server. %s(%d)", 398 strerror(errno), errno); 399 return -1; 400 } 401 402 record = sdp_record_alloc(); 403 if (!record) { 404 syslog(LOG_ERR, "Failed to allocate service record %s(%d)", 405 strerror(errno), errno); 406 sdp_close(session); 407 return -1; 408 } 409 410 sdp_uuid16_create(&root_uuid, PUBLIC_BROWSE_GROUP); 411 root = sdp_list_append(NULL, &root_uuid); 412 sdp_set_browse_groups(record, root); 413 sdp_list_free(root, 0); 414 415 sdp_uuid16_create(&l2cap, L2CAP_UUID); 416 proto[0] = sdp_list_append(NULL, &l2cap); 417 p = sdp_data_alloc(SDP_UINT16, &psm); 418 proto[0] = sdp_list_append(proto[0], p); 419 apseq = sdp_list_append(NULL, proto[0]); 420 421 sdp_uuid16_create(&bnep, BNEP_UUID); 422 proto[1] = sdp_list_append(NULL, &bnep); 423 v = sdp_data_alloc(SDP_UINT16, &version); 424 proto[1] = sdp_list_append(proto[1], v); 425 426 /* Supported protocols */ 427 { 428 uint16_t ptype[4] = { 429 0x0800, /* IPv4 */ 430 0x0806, /* ARP */ 431 }; 432 sdp_data_t *head, *pseq; 433 int p; 434 435 for (p = 0, head = NULL; p < 2; p++) { 436 sdp_data_t *data = sdp_data_alloc(SDP_UINT16, &ptype[p]); 437 if (head) 438 sdp_seq_append(head, data); 439 else 440 head = data; 441 } 442 pseq = sdp_data_alloc(SDP_SEQ16, head); 443 proto[1] = sdp_list_append(proto[1], pseq); 444 } 445 446 apseq = sdp_list_append(apseq, proto[1]); 447 448 aproto = sdp_list_append(NULL, apseq); 449 sdp_set_access_protos(record, aproto); 450 451 add_lang_attr(record); 452 453 sdp_list_free(proto[0], NULL); 454 sdp_list_free(proto[1], NULL); 455 sdp_list_free(apseq, NULL); 456 sdp_list_free(aproto, NULL); 457 sdp_data_free(p); 458 sdp_data_free(v); 459 sdp_attr_add_new(record, SDP_ATTR_SECURITY_DESC, SDP_UINT16, &security_desc); 460 461 switch (role) { 462 case BNEP_SVC_NAP: 463 sdp_uuid16_create(&pan, NAP_SVCLASS_ID); 464 svclass = sdp_list_append(NULL, &pan); 465 sdp_set_service_classes(record, svclass); 466 467 sdp_uuid16_create(&profile[0].uuid, NAP_PROFILE_ID); 468 profile[0].version = 0x0100; 469 pfseq = sdp_list_append(NULL, &profile[0]); 470 sdp_set_profile_descs(record, pfseq); 471 472 sdp_set_info_attr(record, "Network Access Point", name, desc); 473 474 sdp_attr_add_new(record, SDP_ATTR_NET_ACCESS_TYPE, SDP_UINT16, &net_access_type); 475 sdp_attr_add_new(record, SDP_ATTR_MAX_NET_ACCESSRATE, SDP_UINT32, &max_net_access_rate); 476 break; 477 478 case BNEP_SVC_GN: 479 sdp_uuid16_create(&pan, GN_SVCLASS_ID); 480 svclass = sdp_list_append(NULL, &pan); 481 sdp_set_service_classes(record, svclass); 482 483 sdp_uuid16_create(&profile[0].uuid, GN_PROFILE_ID); 484 profile[0].version = 0x0100; 485 pfseq = sdp_list_append(NULL, &profile[0]); 486 sdp_set_profile_descs(record, pfseq); 487 488 sdp_set_info_attr(record, "Group Network Service", name, desc); 489 break; 490 491 case BNEP_SVC_PANU: 492 sdp_uuid16_create(&pan, PANU_SVCLASS_ID); 493 svclass = sdp_list_append(NULL, &pan); 494 sdp_set_service_classes(record, svclass); 495 sdp_list_free(svclass, 0); 496 497 sdp_uuid16_create(&profile[0].uuid, PANU_PROFILE_ID); 498 profile[0].version = 0x0100; 499 pfseq = sdp_list_append(NULL, &profile[0]); 500 sdp_set_profile_descs(record, pfseq); 501 sdp_list_free(pfseq, 0); 502 503 sdp_set_info_attr(record, "PAN User", name, desc); 504 break; 505 } 506 507 status = sdp_device_record_register(session, device, record, 0); 508 if (status) { 509 syslog(LOG_ERR, "SDP registration failed."); 510 sdp_record_free(record); record = NULL; 511 sdp_close(session); 512 return -1; 513 } 514 515 return 0; 516 } 517 518 /* Search for PAN service. 519 * Returns 1 if service is found and 0 otherwise. */ 520 int bnep_sdp_search(bdaddr_t *src, bdaddr_t *dst, uint16_t service) 521 { 522 sdp_list_t *srch, *rsp = NULL; 523 sdp_session_t *s; 524 uuid_t svclass; 525 int err; 526 527 switch (service) { 528 case BNEP_SVC_PANU: 529 sdp_uuid16_create(&svclass, PANU_SVCLASS_ID); 530 break; 531 case BNEP_SVC_NAP: 532 sdp_uuid16_create(&svclass, NAP_SVCLASS_ID); 533 break; 534 case BNEP_SVC_GN: 535 sdp_uuid16_create(&svclass, GN_SVCLASS_ID); 536 break; 537 } 538 539 srch = sdp_list_append(NULL, &svclass); 540 541 s = sdp_connect(src, dst, 0); 542 if (!s) { 543 syslog(LOG_ERR, "Failed to connect to the SDP server. %s(%d)", 544 strerror(errno), errno); 545 return 0; 546 } 547 548 err = sdp_service_search_req(s, srch, 1, &rsp); 549 sdp_close(s); 550 551 /* Assume that search is successeful 552 * if at least one record is found */ 553 if (!err && sdp_list_len(rsp)) 554 return 1; 555 556 return 0; 557 } 558 559 static unsigned char async_uuid[] = { 0x03, 0x50, 0x27, 0x8F, 0x3D, 0xCA, 0x4E, 0x62, 560 0x83, 0x1D, 0xA4, 0x11, 0x65, 0xFF, 0x90, 0x6C }; 561 562 void dun_sdp_unregister(void) 563 { 564 if (record && sdp_record_unregister(session, record)) 565 syslog(LOG_ERR, "Service record unregistration failed."); 566 sdp_close(session); 567 } 568 569 int dun_sdp_register(bdaddr_t *device, uint8_t channel, int type) 570 { 571 sdp_list_t *svclass, *pfseq, *apseq, *root, *aproto; 572 uuid_t root_uuid, l2cap, rfcomm, dun; 573 sdp_profile_desc_t profile[1]; 574 sdp_list_t *proto[2]; 575 int status; 576 577 session = sdp_connect(BDADDR_ANY, BDADDR_LOCAL, 0); 578 if (!session) { 579 syslog(LOG_ERR, "Failed to connect to the local SDP server. %s(%d)", 580 strerror(errno), errno); 581 return -1; 582 } 583 584 record = sdp_record_alloc(); 585 if (!record) { 586 syslog(LOG_ERR, "Failed to alloc service record"); 587 return -1; 588 } 589 590 sdp_uuid16_create(&root_uuid, PUBLIC_BROWSE_GROUP); 591 root = sdp_list_append(NULL, &root_uuid); 592 sdp_set_browse_groups(record, root); 593 594 sdp_uuid16_create(&l2cap, L2CAP_UUID); 595 proto[0] = sdp_list_append(NULL, &l2cap); 596 apseq = sdp_list_append(NULL, proto[0]); 597 598 sdp_uuid16_create(&rfcomm, RFCOMM_UUID); 599 proto[1] = sdp_list_append(NULL, &rfcomm); 600 proto[1] = sdp_list_append(proto[1], sdp_data_alloc(SDP_UINT8, &channel)); 601 apseq = sdp_list_append(apseq, proto[1]); 602 603 aproto = sdp_list_append(NULL, apseq); 604 sdp_set_access_protos(record, aproto); 605 606 switch (type) { 607 case MROUTER: 608 sdp_uuid16_create(&dun, SERIAL_PORT_SVCLASS_ID); 609 break; 610 case ACTIVESYNC: 611 sdp_uuid128_create(&dun, (void *) async_uuid); 612 break; 613 case DIALUP: 614 sdp_uuid16_create(&dun, DIALUP_NET_SVCLASS_ID); 615 break; 616 default: 617 sdp_uuid16_create(&dun, LAN_ACCESS_SVCLASS_ID); 618 break; 619 } 620 621 svclass = sdp_list_append(NULL, &dun); 622 sdp_set_service_classes(record, svclass); 623 624 switch (type) { 625 case LANACCESS: 626 sdp_uuid16_create(&profile[0].uuid, LAN_ACCESS_PROFILE_ID); 627 profile[0].version = 0x0100; 628 pfseq = sdp_list_append(NULL, &profile[0]); 629 sdp_set_profile_descs(record, pfseq); 630 break; 631 case DIALUP: 632 sdp_uuid16_create(&profile[0].uuid, DIALUP_NET_PROFILE_ID); 633 profile[0].version = 0x0100; 634 pfseq = sdp_list_append(NULL, &profile[0]); 635 sdp_set_profile_descs(record, pfseq); 636 break; 637 } 638 639 switch (type) { 640 case MROUTER: 641 sdp_set_info_attr(record, "mRouter", NULL, NULL); 642 break; 643 case ACTIVESYNC: 644 sdp_set_info_attr(record, "ActiveSync", NULL, NULL); 645 break; 646 case DIALUP: 647 sdp_set_info_attr(record, "Dialup Networking", NULL, NULL); 648 break; 649 default: 650 sdp_set_info_attr(record, "LAN Access Point", NULL, NULL); 651 break; 652 } 653 654 status = sdp_device_record_register(session, device, record, 0); 655 if (status) { 656 syslog(LOG_ERR, "SDP registration failed."); 657 sdp_record_free(record); 658 record = NULL; 659 return -1; 660 } 661 return 0; 662 } 663 664 int dun_sdp_search(bdaddr_t *src, bdaddr_t *dst, int *channel, int type) 665 { 666 sdp_session_t *s; 667 sdp_list_t *srch, *attrs, *rsp; 668 uuid_t svclass; 669 uint16_t attr; 670 int err; 671 672 s = sdp_connect(src, dst, 0); 673 if (!s) { 674 syslog(LOG_ERR, "Failed to connect to the SDP server. %s(%d)", 675 strerror(errno), errno); 676 return -1; 677 } 678 679 switch (type) { 680 case MROUTER: 681 sdp_uuid16_create(&svclass, SERIAL_PORT_SVCLASS_ID); 682 break; 683 case ACTIVESYNC: 684 sdp_uuid128_create(&svclass, (void *) async_uuid); 685 break; 686 case DIALUP: 687 sdp_uuid16_create(&svclass, DIALUP_NET_SVCLASS_ID); 688 break; 689 default: 690 sdp_uuid16_create(&svclass, LAN_ACCESS_SVCLASS_ID); 691 break; 692 } 693 694 srch = sdp_list_append(NULL, &svclass); 695 696 attr = SDP_ATTR_PROTO_DESC_LIST; 697 attrs = sdp_list_append(NULL, &attr); 698 699 err = sdp_service_search_attr_req(s, srch, SDP_ATTR_REQ_INDIVIDUAL, attrs, &rsp); 700 701 sdp_close(s); 702 703 if (err) 704 return 0; 705 706 for(; rsp; rsp = rsp->next) { 707 sdp_record_t *rec = (sdp_record_t *) rsp->data; 708 sdp_list_t *protos; 709 710 if (!sdp_get_access_protos(rec, &protos)) { 711 int ch = sdp_get_proto_port(protos, RFCOMM_UUID); 712 if (ch > 0) { 713 *channel = ch; 714 return 1; 715 } 716 } 717 } 718 719 return 0; 720 } 721
