6 * Copyright (c) 2009 Maksim Yevmenkin <m_evmenkin@yahoo.com>
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
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.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include <bluetooth.h>
42 #define MIN(a, b) (((a) < (b))? (a) : (b))
44 static int bt_devany_cb(int s, struct bt_devinfo const *di, void *xdevname);
45 static char * bt_dev2node (char const *devname, char *nodename, int nnlen);
48 bt_devopen(char const *devname)
50 struct sockaddr_hci ha;
54 if (devname == NULL) {
59 memset(&ha, 0, sizeof(ha));
60 ha.hci_len = sizeof(ha);
61 ha.hci_family = AF_BLUETOOTH;
63 if (bt_aton(devname, &ba)) {
64 if (!bt_devname(ha.hci_node, &ba))
66 } else if (bt_dev2node(devname, ha.hci_node,
67 sizeof(ha.hci_node)) == NULL) {
72 s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_HCI);
76 if (bind(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 ||
77 connect(s, (struct sockaddr *) &ha, sizeof(ha)) < 0) {
92 bt_devsend(int s, uint16_t opcode, void *param, size_t plen)
98 if ((plen == 0 && param != NULL) ||
99 (plen > 0 && param == NULL) ||
106 iv[0].iov_len = sizeof(h);
109 h.type = NG_HCI_CMD_PKT;
110 h.opcode = htole16(opcode);
114 iv[1].iov_base = param;
115 iv[1].iov_len = plen;
120 while (writev(s, iv, ivn) < 0) {
121 if (errno == EAGAIN || errno == EINTR)
131 bt_devrecv(int s, void *buf, size_t size, time_t to)
135 if (buf == NULL || size == 0) {
150 while ((n = select(s + 1, &rfd, NULL, NULL, &tv)) < 0) {
151 if (errno == EAGAIN || errno == EINTR)
162 assert(FD_ISSET(s, &rfd));
165 while ((n = read(s, buf, size)) < 0) {
166 if (errno == EAGAIN || errno == EINTR)
172 switch (*((uint8_t *) buf)) {
173 case NG_HCI_CMD_PKT: {
174 ng_hci_cmd_pkt_t *h = (ng_hci_cmd_pkt_t *) buf;
176 if (n >= sizeof(*h) && n == (sizeof(*h) + h->length))
180 case NG_HCI_ACL_DATA_PKT: {
181 ng_hci_acldata_pkt_t *h = (ng_hci_acldata_pkt_t *) buf;
183 if (n >= sizeof(*h) && n == (sizeof(*h) + le16toh(h->length)))
187 case NG_HCI_SCO_DATA_PKT: {
188 ng_hci_scodata_pkt_t *h = (ng_hci_scodata_pkt_t *) buf;
190 if (n >= sizeof(*h) && n == (sizeof(*h) + h->length))
194 case NG_HCI_EVENT_PKT: {
195 ng_hci_event_pkt_t *h = (ng_hci_event_pkt_t *) buf;
197 if (n >= sizeof(*h) && n == (sizeof(*h) + h->length))
207 bt_devreq(int s, struct bt_devreq *r, time_t to)
209 uint8_t buf[320]; /* more than enough */
210 ng_hci_event_pkt_t *e = (ng_hci_event_pkt_t *) buf;
211 ng_hci_command_compl_ep *cc = (ng_hci_command_compl_ep *)(e+1);
212 ng_hci_command_status_ep *cs = (ng_hci_command_status_ep*)(e+1);
213 struct bt_devfilter old, new;
219 if (s < 0 || r == NULL || to < 0) {
224 if ((r->rlen == 0 && r->rparam != NULL) ||
225 (r->rlen > 0 && r->rparam == NULL)) {
230 memset(&new, 0, sizeof(new));
231 bt_devfilter_pkt_set(&new, NG_HCI_EVENT_PKT);
232 bt_devfilter_evt_set(&new, NG_HCI_EVENT_COMMAND_COMPL);
233 bt_devfilter_evt_set(&new, NG_HCI_EVENT_COMMAND_STATUS);
235 bt_devfilter_evt_set(&new, r->event);
237 if (bt_devfilter(s, &new, &old) < 0)
242 n = bt_devsend(s, r->opcode, r->cparam, r->clen);
248 opcode = htole16(r->opcode);
249 t_end = time(NULL) + to;
252 to = t_end - time(NULL);
256 n = bt_devrecv(s, buf, sizeof(buf), to);
262 if (e->type != NG_HCI_EVENT_PKT) {
270 case NG_HCI_EVENT_COMMAND_COMPL:
271 if (cc->opcode == opcode) {
276 memcpy(r->rparam, cc + 1, r->rlen);
283 case NG_HCI_EVENT_COMMAND_STATUS:
284 if (cs->opcode == opcode) {
285 if (r->event != NG_HCI_EVENT_COMMAND_STATUS) {
286 if (cs->status != 0) {
293 memcpy(r->rparam, cs, r->rlen);
302 if (e->event == r->event) {
305 memcpy(r->rparam, e + 1, r->rlen);
316 bt_devfilter(s, &old, NULL);
327 bt_devfilter(int s, struct bt_devfilter const *new, struct bt_devfilter *old)
329 struct ng_btsocket_hci_raw_filter f;
332 if (new == NULL && old == NULL) {
339 if (getsockopt(s, SOL_HCI_RAW, SO_HCI_RAW_FILTER, &f, &len) < 0)
342 memset(old, 0, sizeof(*old));
343 memcpy(old->packet_mask, &f.packet_mask,
344 MIN(sizeof(old->packet_mask), sizeof(f.packet_mask)));
345 memcpy(old->event_mask, &f.event_mask,
346 MIN(sizeof(old->event_mask), sizeof(f.packet_mask)));
350 memset(&f, 0, sizeof(f));
351 memcpy(&f.packet_mask, new->packet_mask,
352 MIN(sizeof(f.packet_mask), sizeof(new->event_mask)));
353 memcpy(&f.event_mask, new->event_mask,
354 MIN(sizeof(f.event_mask), sizeof(new->event_mask)));
357 if (setsockopt(s, SOL_HCI_RAW, SO_HCI_RAW_FILTER, &f, len) < 0)
365 bt_devfilter_pkt_set(struct bt_devfilter *filter, uint8_t type)
367 bit_set(filter->packet_mask, type - 1);
371 bt_devfilter_pkt_clr(struct bt_devfilter *filter, uint8_t type)
373 bit_clear(filter->packet_mask, type - 1);
377 bt_devfilter_pkt_tst(struct bt_devfilter const *filter, uint8_t type)
379 return (bit_test(filter->packet_mask, type - 1));
383 bt_devfilter_evt_set(struct bt_devfilter *filter, uint8_t event)
385 bit_set(filter->event_mask, event - 1);
389 bt_devfilter_evt_clr(struct bt_devfilter *filter, uint8_t event)
391 bit_clear(filter->event_mask, event - 1);
395 bt_devfilter_evt_tst(struct bt_devfilter const *filter, uint8_t event)
397 return (bit_test(filter->event_mask, event - 1));
401 bt_devinquiry(char const *devname, time_t length, int num_rsp,
402 struct bt_devinquiry **ii)
405 char _devname[HCI_DEVNAME_SIZE];
406 struct bt_devfilter f;
407 ng_hci_inquiry_cp *cp = (ng_hci_inquiry_cp *) buf;
408 ng_hci_event_pkt_t *e = (ng_hci_event_pkt_t *) buf;
409 ng_hci_inquiry_result_ep *ep = (ng_hci_inquiry_result_ep *)(e+1);
410 ng_hci_inquiry_response *ir;
411 struct bt_devinquiry *i;
419 if (devname == NULL) {
420 memset(_devname, 0, sizeof(_devname));
423 n = bt_devenum(bt_devany_cb, _devname);
432 s = bt_devopen(devname);
436 if (bt_devfilter(s, NULL, &f) < 0) {
441 bt_devfilter_evt_set(&f, NG_HCI_EVENT_INQUIRY_COMPL);
442 bt_devfilter_evt_set(&f, NG_HCI_EVENT_INQUIRY_RESULT);
444 if (bt_devfilter(s, &f, NULL) < 0) {
449 /* Always use GIAC LAP */
455 * Calculate inquire length in 1.28 second units
456 * v2.x specification says that 1.28 -> 61.44 seconds
457 * range is acceptable
462 else if (length == 1)
464 else if (length > 62)
467 cp->inquiry_length = (uint8_t)((length * 100) / 128);
469 if (num_rsp <= 0 || num_rsp > 255)
471 cp->num_responses = (uint8_t) num_rsp;
473 i = *ii = calloc(num_rsp, sizeof(struct bt_devinquiry));
481 NG_HCI_OPCODE(NG_HCI_OGF_LINK_CONTROL, NG_HCI_OCF_INQUIRY),
482 cp, sizeof(*cp)) < 0) {
490 n = bt_devrecv(s, buf, sizeof(buf), length);
497 if (n < sizeof(ng_hci_event_pkt_t)) {
505 case NG_HCI_EVENT_INQUIRY_COMPL:
508 case NG_HCI_EVENT_INQUIRY_RESULT:
509 ir = (ng_hci_inquiry_response *)(ep + 1);
511 for (n = 0; n < MIN(ep->num_responses, num_rsp); n ++) {
512 bdaddr_copy(&i->bdaddr, &ir->bdaddr);
513 i->pscan_rep_mode = ir->page_scan_rep_mode;
514 i->pscan_period_mode = ir->page_scan_period_mode;
515 memcpy(i->dev_class, ir->uclass, sizeof(i->dev_class));
516 i->clock_offset = le16toh(ir->clock_offset);
535 bt_devinfo(struct bt_devinfo *di)
538 struct ng_btsocket_hci_raw_node_state r0;
539 struct ng_btsocket_hci_raw_node_bdaddr r1;
540 struct ng_btsocket_hci_raw_node_features r2;
541 struct ng_btsocket_hci_raw_node_buffer r3;
542 struct ng_btsocket_hci_raw_node_stat r4;
543 struct ng_btsocket_hci_raw_node_link_policy_mask r5;
544 struct ng_btsocket_hci_raw_node_packet_mask r6;
545 struct ng_btsocket_hci_raw_node_role_switch r7;
546 struct ng_btsocket_hci_raw_node_debug r8;
548 struct sockaddr_hci ha;
557 s = bt_devopen(di->devname);
564 if (getsockname(s, (struct sockaddr *) &ha, &halen) < 0)
566 strlcpy(di->devname, ha.hci_node, sizeof(di->devname));
568 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_STATE, &rp.r0, sizeof(rp.r0)) < 0)
570 di->state = rp.r0.state;
572 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_BDADDR, &rp.r1, sizeof(rp.r1)) < 0)
574 bdaddr_copy(&di->bdaddr, &rp.r1.bdaddr);
576 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_FEATURES, &rp.r2, sizeof(rp.r2)) < 0)
578 memcpy(di->features, rp.r2.features, sizeof(di->features));
580 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_BUFFER, &rp.r3, sizeof(rp.r3)) < 0)
582 di->cmd_free = rp.r3.buffer.cmd_free;
583 di->sco_size = rp.r3.buffer.sco_size;
584 di->sco_pkts = rp.r3.buffer.sco_pkts;
585 di->sco_free = rp.r3.buffer.sco_free;
586 di->acl_size = rp.r3.buffer.acl_size;
587 di->acl_pkts = rp.r3.buffer.acl_pkts;
588 di->acl_free = rp.r3.buffer.acl_free;
590 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_STAT, &rp.r4, sizeof(rp.r4)) < 0)
592 di->cmd_sent = rp.r4.stat.cmd_sent;
593 di->evnt_recv = rp.r4.stat.evnt_recv;
594 di->acl_recv = rp.r4.stat.acl_recv;
595 di->acl_sent = rp.r4.stat.acl_sent;
596 di->sco_recv = rp.r4.stat.sco_recv;
597 di->sco_sent = rp.r4.stat.sco_sent;
598 di->bytes_recv = rp.r4.stat.bytes_recv;
599 di->bytes_sent = rp.r4.stat.bytes_sent;
601 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_LINK_POLICY_MASK,
602 &rp.r5, sizeof(rp.r5)) < 0)
604 di->link_policy_info = rp.r5.policy_mask;
606 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_PACKET_MASK,
607 &rp.r6, sizeof(rp.r6)) < 0)
609 di->packet_type_info = rp.r6.packet_mask;
611 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_ROLE_SWITCH,
612 &rp.r7, sizeof(rp.r7)) < 0)
614 di->role_switch_info = rp.r7.role_switch;
616 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_DEBUG, &rp.r8, sizeof(rp.r8)) < 0)
618 di->debug = rp.r8.debug;
628 bt_devenum(bt_devenum_cb_t cb, void *arg)
630 struct ng_btsocket_hci_raw_node_list_names rp;
631 struct bt_devinfo di;
632 struct sockaddr_hci ha;
635 rp.num_names = HCI_DEVMAX;
636 rp.names = (struct nodeinfo *) calloc(rp.num_names,
637 sizeof(struct nodeinfo));
638 if (rp.names == NULL) {
643 memset(&ha, 0, sizeof(ha));
644 ha.hci_len = sizeof(ha);
645 ha.hci_family = AF_BLUETOOTH;
646 ha.hci_node[0] = 'x';
648 s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_HCI);
655 if (bind(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 ||
656 connect(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 ||
657 ioctl(s, SIOC_HCI_RAW_NODE_LIST_NAMES, &rp, sizeof(rp)) < 0) {
664 for (count = 0, i = 0; i < rp.num_names; i ++) {
665 strlcpy(di.devname, rp.names[i].name, sizeof(di.devname));
666 if (bt_devinfo(&di) < 0)
674 strlcpy(ha.hci_node, rp.names[i].name, sizeof(ha.hci_node));
675 if (bind(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 ||
676 connect(s, (struct sockaddr *) &ha, sizeof(ha)) < 0)
679 if ((*cb)(s, &di, arg) > 0)
690 bt_devany_cb(int s, struct bt_devinfo const *di, void *xdevname)
692 strlcpy((char *) xdevname, di->devname, HCI_DEVNAME_SIZE);
697 bt_dev2node(char const *devname, char *nodename, int nnlen)
699 static char const * bt_dev_prefix[] = {
700 "btccc", /* 3Com Bluetooth PC-CARD */
701 "h4", /* UART/serial Bluetooth devices */
702 "ubt", /* Bluetooth USB devices */
703 NULL /* should be last */
706 static char _nodename[HCI_DEVNAME_SIZE];
711 if (nodename == NULL) {
712 nodename = _nodename;
713 nnlen = HCI_DEVNAME_SIZE;
716 for (p = bt_dev_prefix; *p != NULL; p ++) {
718 if (strncmp(devname, *p, plen) != 0)
721 unit = strtoul(devname + plen, &ep, 10);
723 strcmp(ep, "hci") != 0 &&
724 strcmp(ep, "l2cap") != 0)
725 return (NULL); /* can't make sense of device name */
727 snprintf(nodename, nnlen, "%s%uhci", *p, unit);