6 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
8 * Copyright (c) 2009 Maksim Yevmenkin <m_evmenkin@yahoo.com>
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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.
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
36 #define L2CAP_SOCKET_CHECKED
37 #include <bluetooth.h>
45 #define MIN(a, b) (((a) < (b))? (a) : (b))
47 static int bt_devany_cb(int s, struct bt_devinfo const *di, void *xdevname);
48 static char * bt_dev2node (char const *devname, char *nodename, int nnlen);
51 bt_devopen(char const *devname)
53 struct sockaddr_hci ha;
57 if (devname == NULL) {
62 memset(&ha, 0, sizeof(ha));
63 ha.hci_len = sizeof(ha);
64 ha.hci_family = AF_BLUETOOTH;
66 if (bt_aton(devname, &ba)) {
67 if (!bt_devname(ha.hci_node, &ba))
69 } else if (bt_dev2node(devname, ha.hci_node,
70 sizeof(ha.hci_node)) == NULL) {
75 s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_HCI);
79 if (bind(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 ||
80 connect(s, (struct sockaddr *) &ha, sizeof(ha)) < 0) {
95 bt_devsend(int s, uint16_t opcode, void *param, size_t plen)
101 if ((plen == 0 && param != NULL) ||
102 (plen > 0 && param == NULL) ||
109 iv[0].iov_len = sizeof(h);
112 h.type = NG_HCI_CMD_PKT;
113 h.opcode = htole16(opcode);
117 iv[1].iov_base = param;
118 iv[1].iov_len = plen;
123 while (writev(s, iv, ivn) < 0) {
124 if (errno == EAGAIN || errno == EINTR)
134 bt_devrecv(int s, void *buf, size_t size, time_t to)
138 if (buf == NULL || size == 0) {
153 while ((n = select(s + 1, &rfd, NULL, NULL, &tv)) < 0) {
154 if (errno == EAGAIN || errno == EINTR)
165 assert(FD_ISSET(s, &rfd));
168 while ((n = read(s, buf, size)) < 0) {
169 if (errno == EAGAIN || errno == EINTR)
175 switch (*((uint8_t *) buf)) {
176 case NG_HCI_CMD_PKT: {
177 ng_hci_cmd_pkt_t *h = (ng_hci_cmd_pkt_t *) buf;
179 if (n >= sizeof(*h) && n == (sizeof(*h) + h->length))
183 case NG_HCI_ACL_DATA_PKT: {
184 ng_hci_acldata_pkt_t *h = (ng_hci_acldata_pkt_t *) buf;
186 if (n >= sizeof(*h) && n == (sizeof(*h) + le16toh(h->length)))
190 case NG_HCI_SCO_DATA_PKT: {
191 ng_hci_scodata_pkt_t *h = (ng_hci_scodata_pkt_t *) buf;
193 if (n >= sizeof(*h) && n == (sizeof(*h) + h->length))
197 case NG_HCI_EVENT_PKT: {
198 ng_hci_event_pkt_t *h = (ng_hci_event_pkt_t *) buf;
200 if (n >= sizeof(*h) && n == (sizeof(*h) + h->length))
210 bt_devreq(int s, struct bt_devreq *r, time_t to)
212 uint8_t buf[320]; /* more than enough */
213 ng_hci_event_pkt_t *e = (ng_hci_event_pkt_t *) buf;
214 ng_hci_command_compl_ep *cc = (ng_hci_command_compl_ep *)(e+1);
215 ng_hci_command_status_ep *cs = (ng_hci_command_status_ep*)(e+1);
216 struct bt_devfilter old, new;
222 if (s < 0 || r == NULL || to < 0) {
227 if ((r->rlen == 0 && r->rparam != NULL) ||
228 (r->rlen > 0 && r->rparam == NULL)) {
233 memset(&new, 0, sizeof(new));
234 bt_devfilter_pkt_set(&new, NG_HCI_EVENT_PKT);
235 bt_devfilter_evt_set(&new, NG_HCI_EVENT_COMMAND_COMPL);
236 bt_devfilter_evt_set(&new, NG_HCI_EVENT_COMMAND_STATUS);
238 bt_devfilter_evt_set(&new, r->event);
240 if (bt_devfilter(s, &new, &old) < 0)
245 n = bt_devsend(s, r->opcode, r->cparam, r->clen);
251 opcode = htole16(r->opcode);
252 t_end = time(NULL) + to;
255 to = t_end - time(NULL);
259 n = bt_devrecv(s, buf, sizeof(buf), to);
265 if (e->type != NG_HCI_EVENT_PKT) {
273 case NG_HCI_EVENT_COMMAND_COMPL:
274 if (cc->opcode == opcode) {
279 memcpy(r->rparam, cc + 1, r->rlen);
286 case NG_HCI_EVENT_COMMAND_STATUS:
287 if (cs->opcode == opcode) {
288 if (r->event != NG_HCI_EVENT_COMMAND_STATUS) {
289 if (cs->status != 0) {
296 memcpy(r->rparam, cs, r->rlen);
305 if (e->event == r->event) {
308 memcpy(r->rparam, e + 1, r->rlen);
319 bt_devfilter(s, &old, NULL);
330 bt_devfilter(int s, struct bt_devfilter const *new, struct bt_devfilter *old)
332 struct ng_btsocket_hci_raw_filter f;
335 if (new == NULL && old == NULL) {
342 if (getsockopt(s, SOL_HCI_RAW, SO_HCI_RAW_FILTER, &f, &len) < 0)
345 memset(old, 0, sizeof(*old));
346 memcpy(old->packet_mask, &f.packet_mask,
347 MIN(sizeof(old->packet_mask), sizeof(f.packet_mask)));
348 memcpy(old->event_mask, &f.event_mask,
349 MIN(sizeof(old->event_mask), sizeof(f.packet_mask)));
353 memset(&f, 0, sizeof(f));
354 memcpy(&f.packet_mask, new->packet_mask,
355 MIN(sizeof(f.packet_mask), sizeof(new->event_mask)));
356 memcpy(&f.event_mask, new->event_mask,
357 MIN(sizeof(f.event_mask), sizeof(new->event_mask)));
360 if (setsockopt(s, SOL_HCI_RAW, SO_HCI_RAW_FILTER, &f, len) < 0)
368 bt_devfilter_pkt_set(struct bt_devfilter *filter, uint8_t type)
370 bit_set(filter->packet_mask, type - 1);
374 bt_devfilter_pkt_clr(struct bt_devfilter *filter, uint8_t type)
376 bit_clear(filter->packet_mask, type - 1);
380 bt_devfilter_pkt_tst(struct bt_devfilter const *filter, uint8_t type)
382 return (bit_test(filter->packet_mask, type - 1));
386 bt_devfilter_evt_set(struct bt_devfilter *filter, uint8_t event)
388 bit_set(filter->event_mask, event - 1);
392 bt_devfilter_evt_clr(struct bt_devfilter *filter, uint8_t event)
394 bit_clear(filter->event_mask, event - 1);
398 bt_devfilter_evt_tst(struct bt_devfilter const *filter, uint8_t event)
400 return (bit_test(filter->event_mask, event - 1));
404 bt_devinquiry(char const *devname, time_t length, int num_rsp,
405 struct bt_devinquiry **ii)
408 char _devname[HCI_DEVNAME_SIZE];
409 struct bt_devfilter f;
410 ng_hci_inquiry_cp *cp = (ng_hci_inquiry_cp *) buf;
411 ng_hci_event_pkt_t *e = (ng_hci_event_pkt_t *) buf;
412 ng_hci_inquiry_result_ep *ep = (ng_hci_inquiry_result_ep *)(e+1);
413 ng_hci_inquiry_response *ir;
414 struct bt_devinquiry *i;
422 if (devname == NULL) {
423 memset(_devname, 0, sizeof(_devname));
426 n = bt_devenum(bt_devany_cb, _devname);
435 s = bt_devopen(devname);
439 if (bt_devfilter(s, NULL, &f) < 0) {
444 bt_devfilter_evt_set(&f, NG_HCI_EVENT_INQUIRY_COMPL);
445 bt_devfilter_evt_set(&f, NG_HCI_EVENT_INQUIRY_RESULT);
447 if (bt_devfilter(s, &f, NULL) < 0) {
452 /* Always use GIAC LAP */
458 * Calculate inquire length in 1.28 second units
459 * v2.x specification says that 1.28 -> 61.44 seconds
460 * range is acceptable
465 else if (length == 1)
467 else if (length > 62)
470 cp->inquiry_length = (uint8_t)((length * 100) / 128);
472 if (num_rsp <= 0 || num_rsp > 255)
474 cp->num_responses = (uint8_t) num_rsp;
476 i = *ii = calloc(num_rsp, sizeof(struct bt_devinquiry));
484 NG_HCI_OPCODE(NG_HCI_OGF_LINK_CONTROL, NG_HCI_OCF_INQUIRY),
485 cp, sizeof(*cp)) < 0) {
493 n = bt_devrecv(s, buf, sizeof(buf), length);
500 if (n < sizeof(ng_hci_event_pkt_t)) {
508 case NG_HCI_EVENT_INQUIRY_COMPL:
511 case NG_HCI_EVENT_INQUIRY_RESULT:
512 ir = (ng_hci_inquiry_response *)(ep + 1);
514 for (n = 0; n < MIN(ep->num_responses, num_rsp); n ++) {
515 bdaddr_copy(&i->bdaddr, &ir->bdaddr);
516 i->pscan_rep_mode = ir->page_scan_rep_mode;
517 i->pscan_period_mode = ir->page_scan_period_mode;
518 memcpy(i->dev_class, ir->uclass, sizeof(i->dev_class));
519 i->clock_offset = le16toh(ir->clock_offset);
538 bt_devinfo(struct bt_devinfo *di)
541 struct ng_btsocket_hci_raw_node_state r0;
542 struct ng_btsocket_hci_raw_node_bdaddr r1;
543 struct ng_btsocket_hci_raw_node_features r2;
544 struct ng_btsocket_hci_raw_node_buffer r3;
545 struct ng_btsocket_hci_raw_node_stat r4;
546 struct ng_btsocket_hci_raw_node_link_policy_mask r5;
547 struct ng_btsocket_hci_raw_node_packet_mask r6;
548 struct ng_btsocket_hci_raw_node_role_switch r7;
549 struct ng_btsocket_hci_raw_node_debug r8;
551 struct sockaddr_hci ha;
560 s = bt_devopen(di->devname);
567 if (getsockname(s, (struct sockaddr *) &ha, &halen) < 0)
569 strlcpy(di->devname, ha.hci_node, sizeof(di->devname));
571 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_STATE, &rp.r0, sizeof(rp.r0)) < 0)
573 di->state = rp.r0.state;
575 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_BDADDR, &rp.r1, sizeof(rp.r1)) < 0)
577 bdaddr_copy(&di->bdaddr, &rp.r1.bdaddr);
579 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_FEATURES, &rp.r2, sizeof(rp.r2)) < 0)
581 memcpy(di->features, rp.r2.features, sizeof(di->features));
583 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_BUFFER, &rp.r3, sizeof(rp.r3)) < 0)
585 di->cmd_free = rp.r3.buffer.cmd_free;
586 di->sco_size = rp.r3.buffer.sco_size;
587 di->sco_pkts = rp.r3.buffer.sco_pkts;
588 di->sco_free = rp.r3.buffer.sco_free;
589 di->acl_size = rp.r3.buffer.acl_size;
590 di->acl_pkts = rp.r3.buffer.acl_pkts;
591 di->acl_free = rp.r3.buffer.acl_free;
593 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_STAT, &rp.r4, sizeof(rp.r4)) < 0)
595 di->cmd_sent = rp.r4.stat.cmd_sent;
596 di->evnt_recv = rp.r4.stat.evnt_recv;
597 di->acl_recv = rp.r4.stat.acl_recv;
598 di->acl_sent = rp.r4.stat.acl_sent;
599 di->sco_recv = rp.r4.stat.sco_recv;
600 di->sco_sent = rp.r4.stat.sco_sent;
601 di->bytes_recv = rp.r4.stat.bytes_recv;
602 di->bytes_sent = rp.r4.stat.bytes_sent;
604 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_LINK_POLICY_MASK,
605 &rp.r5, sizeof(rp.r5)) < 0)
607 di->link_policy_info = rp.r5.policy_mask;
609 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_PACKET_MASK,
610 &rp.r6, sizeof(rp.r6)) < 0)
612 di->packet_type_info = rp.r6.packet_mask;
614 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_ROLE_SWITCH,
615 &rp.r7, sizeof(rp.r7)) < 0)
617 di->role_switch_info = rp.r7.role_switch;
619 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_DEBUG, &rp.r8, sizeof(rp.r8)) < 0)
621 di->debug = rp.r8.debug;
631 bt_devenum(bt_devenum_cb_t cb, void *arg)
633 struct ng_btsocket_hci_raw_node_list_names rp;
634 struct bt_devinfo di;
635 struct sockaddr_hci ha;
638 rp.num_names = HCI_DEVMAX;
639 rp.names = (struct nodeinfo *) calloc(rp.num_names,
640 sizeof(struct nodeinfo));
641 if (rp.names == NULL) {
646 memset(&ha, 0, sizeof(ha));
647 ha.hci_len = sizeof(ha);
648 ha.hci_family = AF_BLUETOOTH;
649 ha.hci_node[0] = 'x';
651 s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_HCI);
658 if (bind(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 ||
659 connect(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 ||
660 ioctl(s, SIOC_HCI_RAW_NODE_LIST_NAMES, &rp, sizeof(rp)) < 0) {
667 for (count = 0, i = 0; i < rp.num_names; i ++) {
668 strlcpy(di.devname, rp.names[i].name, sizeof(di.devname));
669 if (bt_devinfo(&di) < 0)
677 strlcpy(ha.hci_node, rp.names[i].name, sizeof(ha.hci_node));
678 if (bind(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 ||
679 connect(s, (struct sockaddr *) &ha, sizeof(ha)) < 0)
682 if ((*cb)(s, &di, arg) > 0)
693 bt_devany_cb(int s, struct bt_devinfo const *di, void *xdevname)
695 strlcpy((char *) xdevname, di->devname, HCI_DEVNAME_SIZE);
700 bt_dev2node(char const *devname, char *nodename, int nnlen)
702 static char const * bt_dev_prefix[] = {
703 "btccc", /* 3Com Bluetooth PC-CARD */
704 "h4", /* UART/serial Bluetooth devices */
705 "ubt", /* Bluetooth USB devices */
706 NULL /* should be last */
709 static char _nodename[HCI_DEVNAME_SIZE];
714 if (nodename == NULL) {
715 nodename = _nodename;
716 nnlen = HCI_DEVNAME_SIZE;
719 for (p = bt_dev_prefix; *p != NULL; p ++) {
721 if (strncmp(devname, *p, plen) != 0)
724 unit = strtoul(devname + plen, &ep, 10);
726 strcmp(ep, "hci") != 0 &&
727 strcmp(ep, "l2cap") != 0)
728 return (NULL); /* can't make sense of device name */
730 snprintf(nodename, nnlen, "%s%uhci", *p, unit);