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 #define L2CAP_SOCKET_CHECKED
35 #include <bluetooth.h>
43 #define MIN(a, b) (((a) < (b))? (a) : (b))
45 static int bt_devany_cb(int s, struct bt_devinfo const *di, void *xdevname);
46 static char * bt_dev2node (char const *devname, char *nodename, int nnlen);
49 bt_devopen(char const *devname)
51 struct sockaddr_hci ha;
55 if (devname == NULL) {
60 memset(&ha, 0, sizeof(ha));
61 ha.hci_len = sizeof(ha);
62 ha.hci_family = AF_BLUETOOTH;
64 if (bt_aton(devname, &ba)) {
65 if (!bt_devname(ha.hci_node, &ba))
67 } else if (bt_dev2node(devname, ha.hci_node,
68 sizeof(ha.hci_node)) == NULL) {
73 s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_HCI);
77 if (bind(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 ||
78 connect(s, (struct sockaddr *) &ha, sizeof(ha)) < 0) {
93 bt_devsend(int s, uint16_t opcode, void *param, size_t plen)
99 if ((plen == 0 && param != NULL) ||
100 (plen > 0 && param == NULL) ||
107 iv[0].iov_len = sizeof(h);
110 h.type = NG_HCI_CMD_PKT;
111 h.opcode = htole16(opcode);
115 iv[1].iov_base = param;
116 iv[1].iov_len = plen;
121 while (writev(s, iv, ivn) < 0) {
122 if (errno == EAGAIN || errno == EINTR)
132 bt_devrecv(int s, void *buf, size_t size, time_t to)
136 if (buf == NULL || size == 0) {
151 while ((n = select(s + 1, &rfd, NULL, NULL, &tv)) < 0) {
152 if (errno == EAGAIN || errno == EINTR)
163 assert(FD_ISSET(s, &rfd));
166 while ((n = read(s, buf, size)) < 0) {
167 if (errno == EAGAIN || errno == EINTR)
173 switch (*((uint8_t *) buf)) {
174 case NG_HCI_CMD_PKT: {
175 ng_hci_cmd_pkt_t *h = (ng_hci_cmd_pkt_t *) buf;
177 if (n >= sizeof(*h) && n == (sizeof(*h) + h->length))
181 case NG_HCI_ACL_DATA_PKT: {
182 ng_hci_acldata_pkt_t *h = (ng_hci_acldata_pkt_t *) buf;
184 if (n >= sizeof(*h) && n == (sizeof(*h) + le16toh(h->length)))
188 case NG_HCI_SCO_DATA_PKT: {
189 ng_hci_scodata_pkt_t *h = (ng_hci_scodata_pkt_t *) buf;
191 if (n >= sizeof(*h) && n == (sizeof(*h) + h->length))
195 case NG_HCI_EVENT_PKT: {
196 ng_hci_event_pkt_t *h = (ng_hci_event_pkt_t *) buf;
198 if (n >= sizeof(*h) && n == (sizeof(*h) + h->length))
208 bt_devreq(int s, struct bt_devreq *r, time_t to)
210 uint8_t buf[320]; /* more than enough */
211 ng_hci_event_pkt_t *e = (ng_hci_event_pkt_t *) buf;
212 ng_hci_command_compl_ep *cc = (ng_hci_command_compl_ep *)(e+1);
213 ng_hci_command_status_ep *cs = (ng_hci_command_status_ep*)(e+1);
214 struct bt_devfilter old, new;
220 if (s < 0 || r == NULL || to < 0) {
225 if ((r->rlen == 0 && r->rparam != NULL) ||
226 (r->rlen > 0 && r->rparam == NULL)) {
231 memset(&new, 0, sizeof(new));
232 bt_devfilter_pkt_set(&new, NG_HCI_EVENT_PKT);
233 bt_devfilter_evt_set(&new, NG_HCI_EVENT_COMMAND_COMPL);
234 bt_devfilter_evt_set(&new, NG_HCI_EVENT_COMMAND_STATUS);
236 bt_devfilter_evt_set(&new, r->event);
238 if (bt_devfilter(s, &new, &old) < 0)
243 n = bt_devsend(s, r->opcode, r->cparam, r->clen);
249 opcode = htole16(r->opcode);
250 t_end = time(NULL) + to;
253 to = t_end - time(NULL);
257 n = bt_devrecv(s, buf, sizeof(buf), to);
263 if (e->type != NG_HCI_EVENT_PKT) {
271 case NG_HCI_EVENT_COMMAND_COMPL:
272 if (cc->opcode == opcode) {
277 memcpy(r->rparam, cc + 1, r->rlen);
284 case NG_HCI_EVENT_COMMAND_STATUS:
285 if (cs->opcode == opcode) {
286 if (r->event != NG_HCI_EVENT_COMMAND_STATUS) {
287 if (cs->status != 0) {
294 memcpy(r->rparam, cs, r->rlen);
303 if (e->event == r->event) {
306 memcpy(r->rparam, e + 1, r->rlen);
317 bt_devfilter(s, &old, NULL);
328 bt_devfilter(int s, struct bt_devfilter const *new, struct bt_devfilter *old)
330 struct ng_btsocket_hci_raw_filter f;
333 if (new == NULL && old == NULL) {
340 if (getsockopt(s, SOL_HCI_RAW, SO_HCI_RAW_FILTER, &f, &len) < 0)
343 memset(old, 0, sizeof(*old));
344 memcpy(old->packet_mask, &f.packet_mask,
345 MIN(sizeof(old->packet_mask), sizeof(f.packet_mask)));
346 memcpy(old->event_mask, &f.event_mask,
347 MIN(sizeof(old->event_mask), sizeof(f.packet_mask)));
351 memset(&f, 0, sizeof(f));
352 memcpy(&f.packet_mask, new->packet_mask,
353 MIN(sizeof(f.packet_mask), sizeof(new->event_mask)));
354 memcpy(&f.event_mask, new->event_mask,
355 MIN(sizeof(f.event_mask), sizeof(new->event_mask)));
358 if (setsockopt(s, SOL_HCI_RAW, SO_HCI_RAW_FILTER, &f, len) < 0)
366 bt_devfilter_pkt_set(struct bt_devfilter *filter, uint8_t type)
368 bit_set(filter->packet_mask, type - 1);
372 bt_devfilter_pkt_clr(struct bt_devfilter *filter, uint8_t type)
374 bit_clear(filter->packet_mask, type - 1);
378 bt_devfilter_pkt_tst(struct bt_devfilter const *filter, uint8_t type)
380 return (bit_test(filter->packet_mask, type - 1));
384 bt_devfilter_evt_set(struct bt_devfilter *filter, uint8_t event)
386 bit_set(filter->event_mask, event - 1);
390 bt_devfilter_evt_clr(struct bt_devfilter *filter, uint8_t event)
392 bit_clear(filter->event_mask, event - 1);
396 bt_devfilter_evt_tst(struct bt_devfilter const *filter, uint8_t event)
398 return (bit_test(filter->event_mask, event - 1));
402 bt_devinquiry(char const *devname, time_t length, int num_rsp,
403 struct bt_devinquiry **ii)
406 char _devname[HCI_DEVNAME_SIZE];
407 struct bt_devfilter f;
408 ng_hci_inquiry_cp *cp = (ng_hci_inquiry_cp *) buf;
409 ng_hci_event_pkt_t *e = (ng_hci_event_pkt_t *) buf;
410 ng_hci_inquiry_result_ep *ep = (ng_hci_inquiry_result_ep *)(e+1);
411 ng_hci_inquiry_response *ir;
412 struct bt_devinquiry *i;
420 if (devname == NULL) {
421 memset(_devname, 0, sizeof(_devname));
424 n = bt_devenum(bt_devany_cb, _devname);
433 s = bt_devopen(devname);
437 if (bt_devfilter(s, NULL, &f) < 0) {
442 bt_devfilter_evt_set(&f, NG_HCI_EVENT_INQUIRY_COMPL);
443 bt_devfilter_evt_set(&f, NG_HCI_EVENT_INQUIRY_RESULT);
445 if (bt_devfilter(s, &f, NULL) < 0) {
450 /* Always use GIAC LAP */
456 * Calculate inquire length in 1.28 second units
457 * v2.x specification says that 1.28 -> 61.44 seconds
458 * range is acceptable
463 else if (length == 1)
465 else if (length > 62)
468 cp->inquiry_length = (uint8_t)((length * 100) / 128);
470 if (num_rsp <= 0 || num_rsp > 255)
472 cp->num_responses = (uint8_t) num_rsp;
474 i = *ii = calloc(num_rsp, sizeof(struct bt_devinquiry));
482 NG_HCI_OPCODE(NG_HCI_OGF_LINK_CONTROL, NG_HCI_OCF_INQUIRY),
483 cp, sizeof(*cp)) < 0) {
491 n = bt_devrecv(s, buf, sizeof(buf), length);
498 if (n < sizeof(ng_hci_event_pkt_t)) {
506 case NG_HCI_EVENT_INQUIRY_COMPL:
509 case NG_HCI_EVENT_INQUIRY_RESULT:
510 ir = (ng_hci_inquiry_response *)(ep + 1);
512 for (n = 0; n < MIN(ep->num_responses, num_rsp); n ++) {
513 bdaddr_copy(&i->bdaddr, &ir->bdaddr);
514 i->pscan_rep_mode = ir->page_scan_rep_mode;
515 i->pscan_period_mode = ir->page_scan_period_mode;
516 memcpy(i->dev_class, ir->uclass, sizeof(i->dev_class));
517 i->clock_offset = le16toh(ir->clock_offset);
536 bt_devinfo(struct bt_devinfo *di)
539 struct ng_btsocket_hci_raw_node_state r0;
540 struct ng_btsocket_hci_raw_node_bdaddr r1;
541 struct ng_btsocket_hci_raw_node_features r2;
542 struct ng_btsocket_hci_raw_node_buffer r3;
543 struct ng_btsocket_hci_raw_node_stat r4;
544 struct ng_btsocket_hci_raw_node_link_policy_mask r5;
545 struct ng_btsocket_hci_raw_node_packet_mask r6;
546 struct ng_btsocket_hci_raw_node_role_switch r7;
547 struct ng_btsocket_hci_raw_node_debug r8;
549 struct sockaddr_hci ha;
558 s = bt_devopen(di->devname);
565 if (getsockname(s, (struct sockaddr *) &ha, &halen) < 0)
567 strlcpy(di->devname, ha.hci_node, sizeof(di->devname));
569 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_STATE, &rp.r0, sizeof(rp.r0)) < 0)
571 di->state = rp.r0.state;
573 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_BDADDR, &rp.r1, sizeof(rp.r1)) < 0)
575 bdaddr_copy(&di->bdaddr, &rp.r1.bdaddr);
577 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_FEATURES, &rp.r2, sizeof(rp.r2)) < 0)
579 memcpy(di->features, rp.r2.features, sizeof(di->features));
581 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_BUFFER, &rp.r3, sizeof(rp.r3)) < 0)
583 di->cmd_free = rp.r3.buffer.cmd_free;
584 di->sco_size = rp.r3.buffer.sco_size;
585 di->sco_pkts = rp.r3.buffer.sco_pkts;
586 di->sco_free = rp.r3.buffer.sco_free;
587 di->acl_size = rp.r3.buffer.acl_size;
588 di->acl_pkts = rp.r3.buffer.acl_pkts;
589 di->acl_free = rp.r3.buffer.acl_free;
591 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_STAT, &rp.r4, sizeof(rp.r4)) < 0)
593 di->cmd_sent = rp.r4.stat.cmd_sent;
594 di->evnt_recv = rp.r4.stat.evnt_recv;
595 di->acl_recv = rp.r4.stat.acl_recv;
596 di->acl_sent = rp.r4.stat.acl_sent;
597 di->sco_recv = rp.r4.stat.sco_recv;
598 di->sco_sent = rp.r4.stat.sco_sent;
599 di->bytes_recv = rp.r4.stat.bytes_recv;
600 di->bytes_sent = rp.r4.stat.bytes_sent;
602 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_LINK_POLICY_MASK,
603 &rp.r5, sizeof(rp.r5)) < 0)
605 di->link_policy_info = rp.r5.policy_mask;
607 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_PACKET_MASK,
608 &rp.r6, sizeof(rp.r6)) < 0)
610 di->packet_type_info = rp.r6.packet_mask;
612 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_ROLE_SWITCH,
613 &rp.r7, sizeof(rp.r7)) < 0)
615 di->role_switch_info = rp.r7.role_switch;
617 if (ioctl(s, SIOC_HCI_RAW_NODE_GET_DEBUG, &rp.r8, sizeof(rp.r8)) < 0)
619 di->debug = rp.r8.debug;
629 bt_devenum(bt_devenum_cb_t cb, void *arg)
631 struct ng_btsocket_hci_raw_node_list_names rp;
632 struct bt_devinfo di;
633 struct sockaddr_hci ha;
636 rp.num_names = HCI_DEVMAX;
637 rp.names = (struct nodeinfo *) calloc(rp.num_names,
638 sizeof(struct nodeinfo));
639 if (rp.names == NULL) {
644 memset(&ha, 0, sizeof(ha));
645 ha.hci_len = sizeof(ha);
646 ha.hci_family = AF_BLUETOOTH;
647 ha.hci_node[0] = 'x';
649 s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_HCI);
656 if (bind(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 ||
657 connect(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 ||
658 ioctl(s, SIOC_HCI_RAW_NODE_LIST_NAMES, &rp, sizeof(rp)) < 0) {
665 for (count = 0, i = 0; i < rp.num_names; i ++) {
666 strlcpy(di.devname, rp.names[i].name, sizeof(di.devname));
667 if (bt_devinfo(&di) < 0)
675 strlcpy(ha.hci_node, rp.names[i].name, sizeof(ha.hci_node));
676 if (bind(s, (struct sockaddr *) &ha, sizeof(ha)) < 0 ||
677 connect(s, (struct sockaddr *) &ha, sizeof(ha)) < 0)
680 if ((*cb)(s, &di, arg) > 0)
691 bt_devany_cb(int s, struct bt_devinfo const *di, void *xdevname)
693 strlcpy((char *) xdevname, di->devname, HCI_DEVNAME_SIZE);
698 bt_dev2node(char const *devname, char *nodename, int nnlen)
700 static char const * bt_dev_prefix[] = {
701 "btccc", /* 3Com Bluetooth PC-CARD */
702 "h4", /* UART/serial Bluetooth devices */
703 "ubt", /* Bluetooth USB devices */
704 NULL /* should be last */
707 static char _nodename[HCI_DEVNAME_SIZE];
712 if (nodename == NULL) {
713 nodename = _nodename;
714 nnlen = HCI_DEVNAME_SIZE;
717 for (p = bt_dev_prefix; *p != NULL; p ++) {
719 if (strncmp(devname, *p, plen) != 0)
722 unit = strtoul(devname + plen, &ep, 10);
724 strcmp(ep, "hci") != 0 &&
725 strcmp(ep, "l2cap") != 0)
726 return (NULL); /* can't make sense of device name */
728 snprintf(nodename, nnlen, "%s%uhci", *p, unit);