1 | /* $NetBSD: hci_socket.c,v 1.45 2015/12/22 11:40:07 plunky Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 2005 Iain Hibbert. |
5 | * Copyright (c) 2006 Itronix Inc. |
6 | * All rights reserved. |
7 | * |
8 | * Redistribution and use in source and binary forms, with or without |
9 | * modification, are permitted provided that the following conditions |
10 | * are met: |
11 | * 1. Redistributions of source code must retain the above copyright |
12 | * notice, this list of conditions and the following disclaimer. |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
16 | * 3. The name of Itronix Inc. may not be used to endorse |
17 | * or promote products derived from this software without specific |
18 | * prior written permission. |
19 | * |
20 | * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND |
21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
22 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
23 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY |
24 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
25 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
26 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
27 | * ON ANY THEORY OF LIABILITY, WHETHER IN |
28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
30 | * POSSIBILITY OF SUCH DAMAGE. |
31 | */ |
32 | |
33 | #include <sys/cdefs.h> |
34 | __KERNEL_RCSID(0, "$NetBSD: hci_socket.c,v 1.45 2015/12/22 11:40:07 plunky Exp $" ); |
35 | |
36 | /* load symbolic names */ |
37 | #ifdef BLUETOOTH_DEBUG |
38 | #define PRUREQUESTS |
39 | #define PRCOREQUESTS |
40 | #endif |
41 | |
42 | #include <sys/param.h> |
43 | #include <sys/domain.h> |
44 | #include <sys/kauth.h> |
45 | #include <sys/kernel.h> |
46 | #include <sys/kmem.h> |
47 | #include <sys/mbuf.h> |
48 | #include <sys/proc.h> |
49 | #include <sys/protosw.h> |
50 | #include <sys/socket.h> |
51 | #include <sys/socketvar.h> |
52 | #include <sys/systm.h> |
53 | |
54 | #include <netbt/bluetooth.h> |
55 | #include <netbt/hci.h> |
56 | |
57 | /******************************************************************************* |
58 | * |
59 | * HCI SOCK_RAW Sockets - for control of Bluetooth Devices |
60 | * |
61 | */ |
62 | |
63 | /* |
64 | * the raw HCI protocol control block |
65 | */ |
66 | struct hci_pcb { |
67 | struct socket *hp_socket; /* socket */ |
68 | kauth_cred_t hp_cred; /* owner credential */ |
69 | unsigned int hp_flags; /* flags */ |
70 | bdaddr_t hp_laddr; /* local address */ |
71 | bdaddr_t hp_raddr; /* remote address */ |
72 | struct hci_filter hp_efilter; /* user event filter */ |
73 | struct hci_filter hp_pfilter; /* user packet filter */ |
74 | LIST_ENTRY(hci_pcb) hp_next; /* next HCI pcb */ |
75 | }; |
76 | |
77 | /* hp_flags */ |
78 | #define HCI_DIRECTION (1<<1) /* direction control messages */ |
79 | #define HCI_PROMISCUOUS (1<<2) /* listen to all units */ |
80 | |
81 | LIST_HEAD(hci_pcb_list, hci_pcb) hci_pcb = LIST_HEAD_INITIALIZER(hci_pcb); |
82 | |
83 | /* sysctl defaults */ |
84 | int hci_sendspace = HCI_CMD_PKT_SIZE; |
85 | int hci_recvspace = 4096; |
86 | |
87 | /* unprivileged commands opcode table */ |
88 | static const struct { |
89 | uint16_t opcode; |
90 | uint8_t offs; /* 0 - 63 */ |
91 | uint8_t mask; /* bit 0 - 7 */ |
92 | uint8_t length; /* approved length */ |
93 | } hci_cmds[] = { |
94 | { HCI_CMD_INQUIRY, |
95 | 0, 0x01, sizeof(hci_inquiry_cp) }, |
96 | { HCI_CMD_REMOTE_NAME_REQ, |
97 | 2, 0x08, sizeof(hci_remote_name_req_cp) }, |
98 | { HCI_CMD_READ_REMOTE_FEATURES, |
99 | 2, 0x20, sizeof(hci_read_remote_features_cp) }, |
100 | { HCI_CMD_READ_REMOTE_EXTENDED_FEATURES, |
101 | 2, 0x40, sizeof(hci_read_remote_extended_features_cp) }, |
102 | { HCI_CMD_READ_REMOTE_VER_INFO, |
103 | 2, 0x80, sizeof(hci_read_remote_ver_info_cp) }, |
104 | { HCI_CMD_READ_CLOCK_OFFSET, |
105 | 3, 0x01, sizeof(hci_read_clock_offset_cp) }, |
106 | { HCI_CMD_READ_LMP_HANDLE, |
107 | 3, 0x02, sizeof(hci_read_lmp_handle_cp) }, |
108 | { HCI_CMD_ROLE_DISCOVERY, |
109 | 4, 0x80, sizeof(hci_role_discovery_cp) }, |
110 | { HCI_CMD_READ_LINK_POLICY_SETTINGS, |
111 | 5, 0x02, sizeof(hci_read_link_policy_settings_cp) }, |
112 | { HCI_CMD_READ_DEFAULT_LINK_POLICY_SETTINGS, |
113 | 5, 0x08, 0 }, |
114 | { HCI_CMD_READ_PIN_TYPE, |
115 | 6, 0x04, 0 }, |
116 | { HCI_CMD_READ_LOCAL_NAME, |
117 | 7, 0x02, 0 }, |
118 | { HCI_CMD_READ_CON_ACCEPT_TIMEOUT, |
119 | 7, 0x04, 0 }, |
120 | { HCI_CMD_READ_PAGE_TIMEOUT, |
121 | 7, 0x10, 0 }, |
122 | { HCI_CMD_READ_SCAN_ENABLE, |
123 | 7, 0x40, 0 }, |
124 | { HCI_CMD_READ_PAGE_SCAN_ACTIVITY, |
125 | 8, 0x01, 0 }, |
126 | { HCI_CMD_READ_INQUIRY_SCAN_ACTIVITY, |
127 | 8, 0x04, 0 }, |
128 | { HCI_CMD_READ_AUTH_ENABLE, |
129 | 8, 0x10, 0 }, |
130 | { HCI_CMD_READ_ENCRYPTION_MODE, |
131 | 8, 0x40, 0 }, |
132 | { HCI_CMD_READ_UNIT_CLASS, |
133 | 9, 0x01, 0 }, |
134 | { HCI_CMD_READ_VOICE_SETTING, |
135 | 9, 0x04, 0 }, |
136 | { HCI_CMD_READ_AUTO_FLUSH_TIMEOUT, |
137 | 9, 0x10, sizeof(hci_read_auto_flush_timeout_cp) }, |
138 | { HCI_CMD_READ_NUM_BROADCAST_RETRANS, |
139 | 9, 0x40, 0 }, |
140 | { HCI_CMD_READ_HOLD_MODE_ACTIVITY, |
141 | 10, 0x01, 0 }, |
142 | { HCI_CMD_READ_XMIT_LEVEL, |
143 | 10, 0x04, sizeof(hci_read_xmit_level_cp) }, |
144 | { HCI_CMD_READ_SCO_FLOW_CONTROL, |
145 | 10, 0x08, 0 }, |
146 | { HCI_CMD_READ_LINK_SUPERVISION_TIMEOUT, |
147 | 11, 0x01, sizeof(hci_read_link_supervision_timeout_cp) }, |
148 | { HCI_CMD_READ_NUM_SUPPORTED_IAC, |
149 | 11, 0x04, 0 }, |
150 | { HCI_CMD_READ_IAC_LAP, |
151 | 11, 0x08, 0 }, |
152 | { HCI_CMD_READ_PAGE_SCAN_PERIOD, |
153 | 11, 0x20, 0 }, |
154 | { HCI_CMD_READ_PAGE_SCAN, |
155 | 11, 0x80, 0 }, |
156 | { HCI_CMD_READ_INQUIRY_SCAN_TYPE, |
157 | 12, 0x10, 0 }, |
158 | { HCI_CMD_READ_INQUIRY_MODE, |
159 | 12, 0x40, 0 }, |
160 | { HCI_CMD_READ_PAGE_SCAN_TYPE, |
161 | 13, 0x01, 0 }, |
162 | { HCI_CMD_READ_AFH_ASSESSMENT, |
163 | 13, 0x04, 0 }, |
164 | { HCI_CMD_READ_LOCAL_VER, |
165 | 14, 0x08, 0 }, |
166 | { HCI_CMD_READ_LOCAL_COMMANDS, |
167 | 14, 0x10, 0 }, |
168 | { HCI_CMD_READ_LOCAL_FEATURES, |
169 | 14, 0x20, 0 }, |
170 | { HCI_CMD_READ_LOCAL_EXTENDED_FEATURES, |
171 | 14, 0x40, sizeof(hci_read_local_extended_features_cp) }, |
172 | { HCI_CMD_READ_BUFFER_SIZE, |
173 | 14, 0x80, 0 }, |
174 | { HCI_CMD_READ_COUNTRY_CODE, |
175 | 15, 0x01, 0 }, |
176 | { HCI_CMD_READ_BDADDR, |
177 | 15, 0x02, 0 }, |
178 | { HCI_CMD_READ_FAILED_CONTACT_CNTR, |
179 | 15, 0x04, sizeof(hci_read_failed_contact_cntr_cp) }, |
180 | { HCI_CMD_READ_LINK_QUALITY, |
181 | 15, 0x10, sizeof(hci_read_link_quality_cp) }, |
182 | { HCI_CMD_READ_RSSI, |
183 | 15, 0x20, sizeof(hci_read_rssi_cp) }, |
184 | { HCI_CMD_READ_AFH_CHANNEL_MAP, |
185 | 15, 0x40, sizeof(hci_read_afh_channel_map_cp) }, |
186 | { HCI_CMD_READ_CLOCK, |
187 | 15, 0x80, sizeof(hci_read_clock_cp) }, |
188 | { HCI_CMD_READ_LOOPBACK_MODE, |
189 | 16, 0x01, 0 }, |
190 | { HCI_CMD_READ_EXTENDED_INQUIRY_RSP, |
191 | 17, 0x01, 0 }, |
192 | { HCI_CMD_READ_SIMPLE_PAIRING_MODE, |
193 | 17, 0x20, 0 }, |
194 | { HCI_CMD_READ_INQUIRY_RSP_XMIT_POWER, |
195 | 18, 0x01, 0 }, |
196 | { HCI_CMD_READ_DEFAULT_ERRDATA_REPORTING, |
197 | 18, 0x04, 0 }, |
198 | }; |
199 | |
200 | /* |
201 | * supply a basic device send/recv policy |
202 | */ |
203 | static int |
204 | hci_device_cb(kauth_cred_t cred, kauth_action_t action, void *cookie, |
205 | void *arg0, void *arg1, void *arg2, void *arg3) |
206 | { |
207 | int i, result; |
208 | |
209 | result = KAUTH_RESULT_DEFER; |
210 | |
211 | switch (action) { |
212 | case KAUTH_DEVICE_BLUETOOTH_SEND: { |
213 | struct hci_unit *unit = (struct hci_unit *)arg0; |
214 | hci_cmd_hdr_t *hdr = (hci_cmd_hdr_t *)arg1; |
215 | |
216 | /* |
217 | * Allow sending unprivileged commands if the packet size |
218 | * is correct and the unit claims to support it |
219 | */ |
220 | |
221 | if (hdr->type != HCI_CMD_PKT) |
222 | break; |
223 | |
224 | for (i = 0; i < __arraycount(hci_cmds); i++) { |
225 | if (hdr->opcode == hci_cmds[i].opcode |
226 | && hdr->length == hci_cmds[i].length |
227 | && (unit->hci_cmds[hci_cmds[i].offs] & hci_cmds[i].mask)) { |
228 | result = KAUTH_RESULT_ALLOW; |
229 | break; |
230 | } |
231 | } |
232 | |
233 | break; |
234 | } |
235 | |
236 | case KAUTH_DEVICE_BLUETOOTH_RECV: |
237 | switch((uint8_t)(uintptr_t)arg0) { |
238 | case HCI_CMD_PKT: { |
239 | uint16_t opcode = (uint16_t)(uintptr_t)arg1; |
240 | |
241 | /* |
242 | * Allow to see any unprivileged command packet |
243 | */ |
244 | |
245 | for (i = 0; i < __arraycount(hci_cmds); i++) { |
246 | if (opcode == hci_cmds[i].opcode) { |
247 | result = KAUTH_RESULT_ALLOW; |
248 | break; |
249 | } |
250 | } |
251 | |
252 | break; |
253 | } |
254 | |
255 | case HCI_EVENT_PKT: { |
256 | uint8_t event = (uint8_t)(uintptr_t)arg1; |
257 | |
258 | /* |
259 | * Allow to receive most events |
260 | */ |
261 | |
262 | switch (event) { |
263 | case HCI_EVENT_RETURN_LINK_KEYS: |
264 | case HCI_EVENT_LINK_KEY_NOTIFICATION: |
265 | case HCI_EVENT_USER_CONFIRM_REQ: |
266 | case HCI_EVENT_USER_PASSKEY_NOTIFICATION: |
267 | case HCI_EVENT_VENDOR: |
268 | break; |
269 | |
270 | default: |
271 | result = KAUTH_RESULT_ALLOW; |
272 | break; |
273 | } |
274 | |
275 | break; |
276 | } |
277 | |
278 | case HCI_ACL_DATA_PKT: |
279 | case HCI_SCO_DATA_PKT: { |
280 | /* uint16_t handle = (uint16_t)(uintptr_t)arg1; */ |
281 | /* |
282 | * don't normally allow receiving data packets |
283 | */ |
284 | break; |
285 | } |
286 | |
287 | default: |
288 | break; |
289 | } |
290 | |
291 | break; |
292 | |
293 | default: |
294 | break; |
295 | } |
296 | |
297 | return result; |
298 | } |
299 | |
300 | /* |
301 | * HCI protocol init routine, |
302 | * - set up a kauth listener to provide basic packet access policy |
303 | */ |
304 | void |
305 | hci_init(void) |
306 | { |
307 | |
308 | if (kauth_listen_scope(KAUTH_SCOPE_DEVICE, hci_device_cb, NULL) == NULL) |
309 | panic("Bluetooth HCI: cannot listen on device scope" ); |
310 | } |
311 | |
312 | /* |
313 | * When command packet reaches the device, we can drop |
314 | * it from the socket buffer (called from hci_output_acl) |
315 | */ |
316 | void |
317 | hci_drop(void *arg) |
318 | { |
319 | struct socket *so = arg; |
320 | |
321 | sbdroprecord(&so->so_snd); |
322 | sowwakeup(so); |
323 | } |
324 | |
325 | /* |
326 | * HCI socket is going away and has some pending packets. We let them |
327 | * go by design, but remove the context pointer as it will be invalid |
328 | * and we no longer need to be notified. |
329 | */ |
330 | static void |
331 | hci_cmdwait_flush(struct socket *so) |
332 | { |
333 | struct hci_unit *unit; |
334 | struct socket *ctx; |
335 | struct mbuf *m; |
336 | |
337 | DPRINTF("flushing %p\n" , so); |
338 | |
339 | SIMPLEQ_FOREACH(unit, &hci_unit_list, hci_next) { |
340 | m = MBUFQ_FIRST(&unit->hci_cmdwait); |
341 | while (m != NULL) { |
342 | ctx = M_GETCTX(m, struct socket *); |
343 | if (ctx == so) |
344 | M_SETCTX(m, NULL); |
345 | |
346 | m = MBUFQ_NEXT(m); |
347 | } |
348 | } |
349 | } |
350 | |
351 | static int |
352 | hci_attach(struct socket *so, int proto) |
353 | { |
354 | struct hci_pcb *pcb; |
355 | int error; |
356 | |
357 | KASSERT(so->so_pcb == NULL); |
358 | |
359 | if (so->so_lock == NULL) { |
360 | mutex_obj_hold(bt_lock); |
361 | so->so_lock = bt_lock; |
362 | solock(so); |
363 | } |
364 | KASSERT(solocked(so)); |
365 | |
366 | error = soreserve(so, hci_sendspace, hci_recvspace); |
367 | if (error) { |
368 | return error; |
369 | } |
370 | |
371 | pcb = kmem_zalloc(sizeof(struct hci_pcb), KM_SLEEP); |
372 | pcb->hp_cred = kauth_cred_dup(curlwp->l_cred); |
373 | pcb->hp_socket = so; |
374 | |
375 | /* |
376 | * Set default user filter. By default, socket only passes |
377 | * Command_Complete and Command_Status Events. |
378 | */ |
379 | hci_filter_set(HCI_EVENT_COMMAND_COMPL, &pcb->hp_efilter); |
380 | hci_filter_set(HCI_EVENT_COMMAND_STATUS, &pcb->hp_efilter); |
381 | hci_filter_set(HCI_EVENT_PKT, &pcb->hp_pfilter); |
382 | |
383 | LIST_INSERT_HEAD(&hci_pcb, pcb, hp_next); |
384 | so->so_pcb = pcb; |
385 | |
386 | return 0; |
387 | } |
388 | |
389 | static void |
390 | hci_detach(struct socket *so) |
391 | { |
392 | struct hci_pcb *pcb; |
393 | |
394 | pcb = (struct hci_pcb *)so->so_pcb; |
395 | KASSERT(pcb != NULL); |
396 | |
397 | if (so->so_snd.sb_mb != NULL) |
398 | hci_cmdwait_flush(so); |
399 | |
400 | if (pcb->hp_cred != NULL) |
401 | kauth_cred_free(pcb->hp_cred); |
402 | |
403 | so->so_pcb = NULL; |
404 | LIST_REMOVE(pcb, hp_next); |
405 | kmem_free(pcb, sizeof(*pcb)); |
406 | } |
407 | |
408 | static int |
409 | hci_accept(struct socket *so, struct sockaddr *nam) |
410 | { |
411 | KASSERT(solocked(so)); |
412 | |
413 | return EOPNOTSUPP; |
414 | } |
415 | |
416 | static int |
417 | hci_bind(struct socket *so, struct sockaddr *nam, struct lwp *l) |
418 | { |
419 | struct hci_pcb *pcb = so->so_pcb; |
420 | struct sockaddr_bt *sa = (struct sockaddr_bt *)nam; |
421 | |
422 | KASSERT(solocked(so)); |
423 | KASSERT(pcb != NULL); |
424 | KASSERT(nam != NULL); |
425 | |
426 | if (sa->bt_len != sizeof(struct sockaddr_bt)) |
427 | return EINVAL; |
428 | |
429 | if (sa->bt_family != AF_BLUETOOTH) |
430 | return EAFNOSUPPORT; |
431 | |
432 | bdaddr_copy(&pcb->hp_laddr, &sa->bt_bdaddr); |
433 | |
434 | if (bdaddr_any(&sa->bt_bdaddr)) |
435 | pcb->hp_flags |= HCI_PROMISCUOUS; |
436 | else |
437 | pcb->hp_flags &= ~HCI_PROMISCUOUS; |
438 | |
439 | return 0; |
440 | } |
441 | |
442 | static int |
443 | hci_listen(struct socket *so, struct lwp *l) |
444 | { |
445 | KASSERT(solocked(so)); |
446 | |
447 | return EOPNOTSUPP; |
448 | } |
449 | |
450 | static int |
451 | hci_connect(struct socket *so, struct sockaddr *nam, struct lwp *l) |
452 | { |
453 | struct hci_pcb *pcb = so->so_pcb; |
454 | struct sockaddr_bt *sa = (struct sockaddr_bt *)nam; |
455 | |
456 | KASSERT(solocked(so)); |
457 | KASSERT(pcb != NULL); |
458 | KASSERT(nam != NULL); |
459 | |
460 | if (sa->bt_len != sizeof(struct sockaddr_bt)) |
461 | return EINVAL; |
462 | |
463 | if (sa->bt_family != AF_BLUETOOTH) |
464 | return EAFNOSUPPORT; |
465 | |
466 | if (hci_unit_lookup(&sa->bt_bdaddr) == NULL) |
467 | return EADDRNOTAVAIL; |
468 | |
469 | bdaddr_copy(&pcb->hp_raddr, &sa->bt_bdaddr); |
470 | soisconnected(so); |
471 | return 0; |
472 | } |
473 | |
474 | static int |
475 | hci_connect2(struct socket *so, struct socket *so2) |
476 | { |
477 | KASSERT(solocked(so)); |
478 | |
479 | return EOPNOTSUPP; |
480 | } |
481 | |
482 | static int |
483 | hci_disconnect(struct socket *so) |
484 | { |
485 | struct hci_pcb *pcb = so->so_pcb; |
486 | |
487 | KASSERT(solocked(so)); |
488 | KASSERT(pcb != NULL); |
489 | |
490 | bdaddr_copy(&pcb->hp_raddr, BDADDR_ANY); |
491 | |
492 | /* XXX we cannot call soisdisconnected() here, as it sets |
493 | * SS_CANTRCVMORE and SS_CANTSENDMORE. The problem being, |
494 | * that soisconnected() does not clear these and if you |
495 | * try to reconnect this socket (which is permitted) you |
496 | * get a broken pipe when you try to write any data. |
497 | */ |
498 | so->so_state &= ~SS_ISCONNECTED; |
499 | return 0; |
500 | } |
501 | |
502 | static int |
503 | hci_shutdown(struct socket *so) |
504 | { |
505 | KASSERT(solocked(so)); |
506 | |
507 | socantsendmore(so); |
508 | return 0; |
509 | } |
510 | |
511 | static int |
512 | hci_abort(struct socket *so) |
513 | { |
514 | KASSERT(solocked(so)); |
515 | |
516 | soisdisconnected(so); |
517 | hci_detach(so); |
518 | return 0; |
519 | } |
520 | |
521 | static int |
522 | hci_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) |
523 | { |
524 | int err; |
525 | mutex_enter(bt_lock); |
526 | err = hci_ioctl_pcb(cmd, nam); |
527 | mutex_exit(bt_lock); |
528 | return err; |
529 | } |
530 | |
531 | static int |
532 | hci_stat(struct socket *so, struct stat *ub) |
533 | { |
534 | KASSERT(solocked(so)); |
535 | |
536 | return 0; |
537 | } |
538 | |
539 | static int |
540 | hci_peeraddr(struct socket *so, struct sockaddr *nam) |
541 | { |
542 | struct hci_pcb *pcb = (struct hci_pcb *)so->so_pcb; |
543 | struct sockaddr_bt *sa = (struct sockaddr_bt *)nam; |
544 | |
545 | KASSERT(solocked(so)); |
546 | KASSERT(pcb != NULL); |
547 | KASSERT(nam != NULL); |
548 | |
549 | memset(sa, 0, sizeof(struct sockaddr_bt)); |
550 | sa->bt_len = sizeof(struct sockaddr_bt); |
551 | sa->bt_family = AF_BLUETOOTH; |
552 | bdaddr_copy(&sa->bt_bdaddr, &pcb->hp_raddr); |
553 | return 0; |
554 | } |
555 | |
556 | static int |
557 | hci_sockaddr(struct socket *so, struct sockaddr *nam) |
558 | { |
559 | struct hci_pcb *pcb = (struct hci_pcb *)so->so_pcb; |
560 | struct sockaddr_bt *sa = (struct sockaddr_bt *)nam; |
561 | |
562 | KASSERT(solocked(so)); |
563 | KASSERT(pcb != NULL); |
564 | KASSERT(nam != NULL); |
565 | |
566 | memset(sa, 0, sizeof(struct sockaddr_bt)); |
567 | sa->bt_len = sizeof(struct sockaddr_bt); |
568 | sa->bt_family = AF_BLUETOOTH; |
569 | bdaddr_copy(&sa->bt_bdaddr, &pcb->hp_laddr); |
570 | return 0; |
571 | } |
572 | |
573 | static int |
574 | hci_rcvd(struct socket *so, int flags, struct lwp *l) |
575 | { |
576 | KASSERT(solocked(so)); |
577 | |
578 | return EOPNOTSUPP; |
579 | } |
580 | |
581 | static int |
582 | hci_recvoob(struct socket *so, struct mbuf *m, int flags) |
583 | { |
584 | KASSERT(solocked(so)); |
585 | |
586 | return EOPNOTSUPP; |
587 | } |
588 | |
589 | static int |
590 | hci_send(struct socket *so, struct mbuf *m, struct sockaddr *nam, |
591 | struct mbuf *control, struct lwp *l) |
592 | { |
593 | struct hci_pcb *pcb = so->so_pcb; |
594 | struct sockaddr_bt *sa = (struct sockaddr_bt *)nam; |
595 | struct hci_unit *unit; |
596 | struct mbuf *m0; |
597 | hci_cmd_hdr_t hdr; |
598 | int err = 0; |
599 | |
600 | KASSERT(solocked(so)); |
601 | KASSERT(pcb != NULL); |
602 | KASSERT(m != NULL); |
603 | |
604 | if (control) /* have no use for this */ |
605 | m_freem(control); |
606 | |
607 | if (sa) { |
608 | if (sa->bt_len != sizeof(struct sockaddr_bt)) { |
609 | err = EINVAL; |
610 | goto bad; |
611 | } |
612 | |
613 | if (sa->bt_family != AF_BLUETOOTH) { |
614 | err = EAFNOSUPPORT; |
615 | goto bad; |
616 | } |
617 | } |
618 | |
619 | /* |
620 | * this came from userland, so we check it out first |
621 | */ |
622 | |
623 | /* wants at least a header to start with */ |
624 | if (m->m_pkthdr.len < sizeof(hdr)) { |
625 | err = EMSGSIZE; |
626 | goto bad; |
627 | } |
628 | m_copydata(m, 0, sizeof(hdr), &hdr); |
629 | hdr.opcode = le16toh(hdr.opcode); |
630 | |
631 | /* only allows CMD packets to be sent */ |
632 | if (hdr.type != HCI_CMD_PKT) { |
633 | err = EINVAL; |
634 | goto bad; |
635 | } |
636 | |
637 | /* validates packet length */ |
638 | if (m->m_pkthdr.len != sizeof(hdr) + hdr.length) { |
639 | err = EMSGSIZE; |
640 | goto bad; |
641 | } |
642 | |
643 | /* finds destination */ |
644 | unit = hci_unit_lookup((sa ? &sa->bt_bdaddr : &pcb->hp_raddr)); |
645 | if (unit == NULL) { |
646 | err = ENETDOWN; |
647 | goto bad; |
648 | } |
649 | |
650 | /* security checks for unprivileged users */ |
651 | if (pcb->hp_cred != NULL |
652 | && kauth_authorize_device(pcb->hp_cred, |
653 | KAUTH_DEVICE_BLUETOOTH_SEND, |
654 | unit, &hdr, NULL, NULL) != 0) { |
655 | err = EPERM; |
656 | goto bad; |
657 | } |
658 | |
659 | /* makess a copy for precious to keep */ |
660 | m0 = m_copypacket(m, M_DONTWAIT); |
661 | if (m0 == NULL) { |
662 | err = ENOMEM; |
663 | goto bad; |
664 | } |
665 | sbappendrecord(&pcb->hp_socket->so_snd, m0); |
666 | M_SETCTX(m, pcb->hp_socket); /* enable drop callback */ |
667 | |
668 | DPRINTFN(2, "(%s) opcode (%03x|%04x)\n" , device_xname(unit->hci_dev), |
669 | HCI_OGF(hdr.opcode), HCI_OCF(hdr.opcode)); |
670 | |
671 | /* Sendss it */ |
672 | if (unit->hci_num_cmd_pkts == 0) |
673 | MBUFQ_ENQUEUE(&unit->hci_cmdwait, m); |
674 | else |
675 | hci_output_cmd(unit, m); |
676 | |
677 | return 0; |
678 | |
679 | bad: |
680 | DPRINTF("packet (%d bytes) not sent (error %d)\n" , |
681 | m->m_pkthdr.len, err); |
682 | if (m) |
683 | m_freem(m); |
684 | |
685 | return err; |
686 | } |
687 | |
688 | static int |
689 | hci_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) |
690 | { |
691 | KASSERT(solocked(so)); |
692 | |
693 | if (m) |
694 | m_freem(m); |
695 | if (control) |
696 | m_freem(control); |
697 | |
698 | return EOPNOTSUPP; |
699 | } |
700 | |
701 | static int |
702 | hci_purgeif(struct socket *so, struct ifnet *ifp) |
703 | { |
704 | |
705 | return EOPNOTSUPP; |
706 | } |
707 | |
708 | /* |
709 | * get/set socket options |
710 | */ |
711 | int |
712 | hci_ctloutput(int req, struct socket *so, struct sockopt *sopt) |
713 | { |
714 | struct hci_pcb *pcb = (struct hci_pcb *)so->so_pcb; |
715 | int optval, err = 0; |
716 | |
717 | DPRINTFN(2, "req %s\n" , prcorequests[req]); |
718 | |
719 | if (pcb == NULL) |
720 | return EINVAL; |
721 | |
722 | if (sopt->sopt_level != BTPROTO_HCI) |
723 | return ENOPROTOOPT; |
724 | |
725 | switch(req) { |
726 | case PRCO_GETOPT: |
727 | switch (sopt->sopt_name) { |
728 | case SO_HCI_EVT_FILTER: |
729 | err = sockopt_set(sopt, &pcb->hp_efilter, |
730 | sizeof(struct hci_filter)); |
731 | |
732 | break; |
733 | |
734 | case SO_HCI_PKT_FILTER: |
735 | err = sockopt_set(sopt, &pcb->hp_pfilter, |
736 | sizeof(struct hci_filter)); |
737 | |
738 | break; |
739 | |
740 | case SO_HCI_DIRECTION: |
741 | err = sockopt_setint(sopt, |
742 | (pcb->hp_flags & HCI_DIRECTION ? 1 : 0)); |
743 | |
744 | break; |
745 | |
746 | default: |
747 | err = ENOPROTOOPT; |
748 | break; |
749 | } |
750 | break; |
751 | |
752 | case PRCO_SETOPT: |
753 | switch (sopt->sopt_name) { |
754 | case SO_HCI_EVT_FILTER: /* set event filter */ |
755 | err = sockopt_get(sopt, &pcb->hp_efilter, |
756 | sizeof(pcb->hp_efilter)); |
757 | |
758 | break; |
759 | |
760 | case SO_HCI_PKT_FILTER: /* set packet filter */ |
761 | err = sockopt_get(sopt, &pcb->hp_pfilter, |
762 | sizeof(pcb->hp_pfilter)); |
763 | |
764 | break; |
765 | |
766 | case SO_HCI_DIRECTION: /* request direction ctl messages */ |
767 | err = sockopt_getint(sopt, &optval); |
768 | if (err) |
769 | break; |
770 | |
771 | if (optval) |
772 | pcb->hp_flags |= HCI_DIRECTION; |
773 | else |
774 | pcb->hp_flags &= ~HCI_DIRECTION; |
775 | break; |
776 | |
777 | default: |
778 | err = ENOPROTOOPT; |
779 | break; |
780 | } |
781 | break; |
782 | |
783 | default: |
784 | err = ENOPROTOOPT; |
785 | break; |
786 | } |
787 | |
788 | return err; |
789 | } |
790 | |
791 | /* |
792 | * HCI mbuf tap routine |
793 | * |
794 | * copy packets to any raw HCI sockets that wish (and are |
795 | * permitted) to see them |
796 | */ |
797 | void |
798 | hci_mtap(struct mbuf *m, struct hci_unit *unit) |
799 | { |
800 | struct hci_pcb *pcb; |
801 | struct mbuf *m0, *ctlmsg, **ctl; |
802 | struct sockaddr_bt sa; |
803 | uint8_t type; |
804 | uint8_t event; |
805 | uint16_t arg1; |
806 | |
807 | KASSERT(m->m_len >= sizeof(type)); |
808 | |
809 | type = *mtod(m, uint8_t *); |
810 | |
811 | memset(&sa, 0, sizeof(sa)); |
812 | sa.bt_len = sizeof(struct sockaddr_bt); |
813 | sa.bt_family = AF_BLUETOOTH; |
814 | bdaddr_copy(&sa.bt_bdaddr, &unit->hci_bdaddr); |
815 | |
816 | LIST_FOREACH(pcb, &hci_pcb, hp_next) { |
817 | /* |
818 | * filter according to source address |
819 | */ |
820 | if ((pcb->hp_flags & HCI_PROMISCUOUS) == 0 |
821 | && bdaddr_same(&pcb->hp_laddr, &sa.bt_bdaddr) == 0) |
822 | continue; |
823 | |
824 | /* |
825 | * filter according to packet type filter |
826 | */ |
827 | if (hci_filter_test(type, &pcb->hp_pfilter) == 0) |
828 | continue; |
829 | |
830 | /* |
831 | * filter according to event/security filters |
832 | */ |
833 | switch(type) { |
834 | case HCI_EVENT_PKT: |
835 | KASSERT(m->m_len >= sizeof(hci_event_hdr_t)); |
836 | |
837 | event = mtod(m, hci_event_hdr_t *)->event; |
838 | |
839 | if (hci_filter_test(event, &pcb->hp_efilter) == 0) |
840 | continue; |
841 | |
842 | arg1 = event; |
843 | break; |
844 | |
845 | case HCI_CMD_PKT: |
846 | KASSERT(m->m_len >= sizeof(hci_cmd_hdr_t)); |
847 | arg1 = le16toh(mtod(m, hci_cmd_hdr_t *)->opcode); |
848 | break; |
849 | |
850 | case HCI_ACL_DATA_PKT: |
851 | KASSERT(m->m_len >= sizeof(hci_acldata_hdr_t)); |
852 | arg1 = le16toh(mtod(m, hci_acldata_hdr_t *)->con_handle); |
853 | arg1 = HCI_CON_HANDLE(arg1); |
854 | break; |
855 | |
856 | case HCI_SCO_DATA_PKT: |
857 | KASSERT(m->m_len >= sizeof(hci_scodata_hdr_t)); |
858 | arg1 = le16toh(mtod(m, hci_scodata_hdr_t *)->con_handle); |
859 | arg1 = HCI_CON_HANDLE(arg1); |
860 | break; |
861 | |
862 | default: |
863 | arg1 = 0; |
864 | break; |
865 | } |
866 | |
867 | if (pcb->hp_cred != NULL |
868 | && kauth_authorize_device(pcb->hp_cred, |
869 | KAUTH_DEVICE_BLUETOOTH_RECV, |
870 | KAUTH_ARG(type), KAUTH_ARG(arg1), NULL, NULL) != 0) |
871 | continue; |
872 | |
873 | /* |
874 | * create control messages |
875 | */ |
876 | ctlmsg = NULL; |
877 | ctl = &ctlmsg; |
878 | if (pcb->hp_flags & HCI_DIRECTION) { |
879 | int dir = m->m_flags & M_LINK0 ? 1 : 0; |
880 | |
881 | *ctl = sbcreatecontrol(&dir, sizeof(dir), |
882 | SCM_HCI_DIRECTION, BTPROTO_HCI); |
883 | |
884 | if (*ctl != NULL) |
885 | ctl = &((*ctl)->m_next); |
886 | } |
887 | if (pcb->hp_socket->so_options & SO_TIMESTAMP) { |
888 | struct timeval tv; |
889 | |
890 | microtime(&tv); |
891 | *ctl = sbcreatecontrol(&tv, sizeof(tv), |
892 | SCM_TIMESTAMP, SOL_SOCKET); |
893 | |
894 | if (*ctl != NULL) |
895 | ctl = &((*ctl)->m_next); |
896 | } |
897 | |
898 | /* |
899 | * copy to socket |
900 | */ |
901 | m0 = m_copypacket(m, M_DONTWAIT); |
902 | if (m0 && sbappendaddr(&pcb->hp_socket->so_rcv, |
903 | (struct sockaddr *)&sa, m0, ctlmsg)) { |
904 | sorwakeup(pcb->hp_socket); |
905 | } else { |
906 | m_freem(ctlmsg); |
907 | m_freem(m0); |
908 | } |
909 | } |
910 | } |
911 | |
912 | PR_WRAP_USRREQS(hci) |
913 | |
914 | #define hci_attach hci_attach_wrapper |
915 | #define hci_detach hci_detach_wrapper |
916 | #define hci_accept hci_accept_wrapper |
917 | #define hci_bind hci_bind_wrapper |
918 | #define hci_listen hci_listen_wrapper |
919 | #define hci_connect hci_connect_wrapper |
920 | #define hci_connect2 hci_connect2_wrapper |
921 | #define hci_disconnect hci_disconnect_wrapper |
922 | #define hci_shutdown hci_shutdown_wrapper |
923 | #define hci_abort hci_abort_wrapper |
924 | #define hci_ioctl hci_ioctl_wrapper |
925 | #define hci_stat hci_stat_wrapper |
926 | #define hci_peeraddr hci_peeraddr_wrapper |
927 | #define hci_sockaddr hci_sockaddr_wrapper |
928 | #define hci_rcvd hci_rcvd_wrapper |
929 | #define hci_recvoob hci_recvoob_wrapper |
930 | #define hci_send hci_send_wrapper |
931 | #define hci_sendoob hci_sendoob_wrapper |
932 | #define hci_purgeif hci_purgeif_wrapper |
933 | |
934 | const struct pr_usrreqs hci_usrreqs = { |
935 | .pr_attach = hci_attach, |
936 | .pr_detach = hci_detach, |
937 | .pr_accept = hci_accept, |
938 | .pr_bind = hci_bind, |
939 | .pr_listen = hci_listen, |
940 | .pr_connect = hci_connect, |
941 | .pr_connect2 = hci_connect2, |
942 | .pr_disconnect = hci_disconnect, |
943 | .pr_shutdown = hci_shutdown, |
944 | .pr_abort = hci_abort, |
945 | .pr_ioctl = hci_ioctl, |
946 | .pr_stat = hci_stat, |
947 | .pr_peeraddr = hci_peeraddr, |
948 | .pr_sockaddr = hci_sockaddr, |
949 | .pr_rcvd = hci_rcvd, |
950 | .pr_recvoob = hci_recvoob, |
951 | .pr_send = hci_send, |
952 | .pr_sendoob = hci_sendoob, |
953 | .pr_purgeif = hci_purgeif, |
954 | }; |
955 | |