1 /*
2 *
3 * BlueZ - Bluetooth protocol stack for Linux
4 *
5 * Copyright (C) 2006-2010 Nokia Corporation
6 * Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
7 *
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 *
23 */
24
25 #ifdef HAVE_CONFIG_H
26 #include <config.h>
27 #endif
28
29 #include <stdio.h>
30 #include <sys/socket.h>
31 #include <sys/un.h>
32 #include <stdlib.h>
33 #include <errno.h>
34 #include <unistd.h>
35 #include <stdint.h>
36
37 #include <bluetooth/bluetooth.h>
38 #include <bluetooth/sdp.h>
39 #include <dbus/dbus.h>
40 #include <glib.h>
41
42 #include "log.h"
43 #include "ipc.h"
44 #include "device.h"
45 #include "manager.h"
46 #include "avdtp.h"
47 #include "a2dp.h"
48 #include "headset.h"
49 #include "sink.h"
50 #include "gateway.h"
51 #include "unix.h"
52 #include "glib-helper.h"
53
54 #define check_nul(str) (str[sizeof(str) - 1] == '\0')
55
56 typedef enum {
57 TYPE_NONE,
58 TYPE_HEADSET,
59 TYPE_GATEWAY,
60 TYPE_SINK,
61 TYPE_SOURCE
62 } service_type_t;
63
64 typedef void (*notify_cb_t) (struct audio_device *dev, void *data);
65
66 struct a2dp_data {
67 struct avdtp *session;
68 struct avdtp_stream *stream;
69 struct a2dp_sep *sep;
70 };
71
72 struct headset_data {
73 gboolean locked;
74 };
75
76 struct unix_client {
77 struct audio_device *dev;
78 GSList *caps;
79 service_type_t type;
80 char *interface;
81 uint8_t seid;
82 union {
83 struct a2dp_data a2dp;
84 struct headset_data hs;
85 } d;
86 int sock;
87 int lock;
88 int data_fd; /* To be deleted once two phase configuration is fully implemented */
89 unsigned int req_id;
90 unsigned int cb_id;
91 gboolean (*cancel) (struct audio_device *dev, unsigned int id);
92 };
93
94 static GSList *clients = NULL;
95
96 static int unix_sock = -1;
97
client_free(struct unix_client * client)98 static void client_free(struct unix_client *client)
99 {
100 DBG("client_free(%p)", client);
101
102 if (client->cancel && client->dev && client->req_id > 0)
103 client->cancel(client->dev, client->req_id);
104
105 if (client->sock >= 0)
106 close(client->sock);
107
108 if (client->caps) {
109 g_slist_foreach(client->caps, (GFunc) g_free, NULL);
110 g_slist_free(client->caps);
111 }
112
113 g_free(client->interface);
114 g_free(client);
115 }
116
117 /* Pass file descriptor through local domain sockets (AF_LOCAL, formerly
118 * AF_UNIX) and the sendmsg() system call with the cmsg_type field of a "struct
119 * cmsghdr" set to SCM_RIGHTS and the data being an integer value equal to the
120 * handle of the file descriptor to be passed. */
unix_sendmsg_fd(int sock,int fd)121 static int unix_sendmsg_fd(int sock, int fd)
122 {
123 char cmsg_b[CMSG_SPACE(sizeof(int))], m = 'm';
124 struct cmsghdr *cmsg;
125 struct iovec iov = { &m, sizeof(m) };
126 struct msghdr msgh;
127
128 memset(&msgh, 0, sizeof(msgh));
129 msgh.msg_iov = &iov;
130 msgh.msg_iovlen = 1;
131 msgh.msg_control = &cmsg_b;
132 msgh.msg_controllen = CMSG_LEN(sizeof(int));
133
134 cmsg = CMSG_FIRSTHDR(&msgh);
135 cmsg->cmsg_level = SOL_SOCKET;
136 cmsg->cmsg_type = SCM_RIGHTS;
137 cmsg->cmsg_len = CMSG_LEN(sizeof(int));
138 /* Initialize the payload */
139 memcpy(CMSG_DATA(cmsg), &fd, sizeof(int));
140
141 return sendmsg(sock, &msgh, MSG_NOSIGNAL);
142 }
143
unix_ipc_sendmsg(struct unix_client * client,const bt_audio_msg_header_t * msg)144 static void unix_ipc_sendmsg(struct unix_client *client,
145 const bt_audio_msg_header_t *msg)
146 {
147 const char *type = bt_audio_strtype(msg->type);
148 const char *name = bt_audio_strname(msg->name);
149
150 DBG("Audio API: %s -> %s", type, name);
151
152 if (send(client->sock, msg, msg->length, 0) < 0)
153 error("Error %s(%d)", strerror(errno), errno);
154 }
155
unix_ipc_error(struct unix_client * client,uint8_t name,int err)156 static void unix_ipc_error(struct unix_client *client, uint8_t name, int err)
157 {
158 char buf[BT_SUGGESTED_BUFFER_SIZE];
159 bt_audio_error_t *rsp = (void *) buf;
160
161 if (!g_slist_find(clients, client))
162 return;
163
164 memset(buf, 0, sizeof(buf));
165 rsp->h.type = BT_ERROR;
166 rsp->h.name = name;
167 rsp->h.length = sizeof(*rsp);
168
169 rsp->posix_errno = err;
170
171 DBG("sending error %s(%d)", strerror(err), err);
172 unix_ipc_sendmsg(client, &rsp->h);
173 }
174
select_service(struct audio_device * dev,const char * interface)175 static service_type_t select_service(struct audio_device *dev, const char *interface)
176 {
177 if (!interface) {
178 if (dev->sink && avdtp_is_connected(&dev->src, &dev->dst))
179 return TYPE_SINK;
180 else if (dev->source && avdtp_is_connected(&dev->src,
181 &dev->dst))
182 return TYPE_SOURCE;
183 else if (dev->headset && headset_is_active(dev))
184 return TYPE_HEADSET;
185 else if (dev->sink)
186 return TYPE_SINK;
187 else if (dev->source)
188 return TYPE_SOURCE;
189 else if (dev->headset)
190 return TYPE_HEADSET;
191 } else if (!strcmp(interface, AUDIO_SOURCE_INTERFACE) && dev->source)
192 return TYPE_SOURCE;
193 else if (!strcmp(interface, AUDIO_SINK_INTERFACE) && dev->sink)
194 return TYPE_SINK;
195 else if (!strcmp(interface, AUDIO_HEADSET_INTERFACE) && dev->headset)
196 return TYPE_HEADSET;
197 else if (!strcmp(interface, AUDIO_GATEWAY_INTERFACE) && dev->gateway)
198 return TYPE_GATEWAY;
199
200 return TYPE_NONE;
201 }
202
stream_state_changed(struct avdtp_stream * stream,avdtp_state_t old_state,avdtp_state_t new_state,struct avdtp_error * err,void * user_data)203 static void stream_state_changed(struct avdtp_stream *stream,
204 avdtp_state_t old_state,
205 avdtp_state_t new_state,
206 struct avdtp_error *err,
207 void *user_data)
208 {
209 struct unix_client *client = user_data;
210 struct a2dp_data *a2dp = &client->d.a2dp;
211
212 switch (new_state) {
213 case AVDTP_STATE_IDLE:
214 if (a2dp->sep) {
215 a2dp_sep_unlock(a2dp->sep, a2dp->session);
216 a2dp->sep = NULL;
217 }
218 if (a2dp->session) {
219 avdtp_unref(a2dp->session);
220 a2dp->session = NULL;
221 }
222 a2dp->stream = NULL;
223 client->cb_id = 0;
224 break;
225 default:
226 break;
227 }
228 }
229
headset_generate_capability(struct audio_device * dev,codec_capabilities_t * codec)230 static uint8_t headset_generate_capability(struct audio_device *dev,
231 codec_capabilities_t *codec)
232 {
233 pcm_capabilities_t *pcm;
234
235 codec->seid = BT_A2DP_SEID_RANGE + 1;
236 codec->transport = BT_CAPABILITIES_TRANSPORT_SCO;
237 codec->type = BT_HFP_CODEC_PCM;
238 codec->length = sizeof(*pcm);
239
240 pcm = (void *) codec;
241 pcm->sampling_rate = 8000;
242 if (dev->headset) {
243 if (headset_get_nrec(dev))
244 pcm->flags |= BT_PCM_FLAG_NREC;
245 if (!headset_get_sco_hci(dev))
246 pcm->flags |= BT_PCM_FLAG_PCM_ROUTING;
247 codec->configured = headset_is_active(dev);
248 codec->lock = headset_get_lock(dev);
249 } else {
250 pcm->flags |= BT_PCM_FLAG_NREC;
251 codec->configured = TRUE;
252 codec->lock = 0;
253 }
254
255 return codec->length;
256 }
257
headset_discovery_complete(struct audio_device * dev,void * user_data)258 static void headset_discovery_complete(struct audio_device *dev, void *user_data)
259 {
260 struct unix_client *client = user_data;
261 char buf[BT_SUGGESTED_BUFFER_SIZE];
262 struct bt_get_capabilities_rsp *rsp = (void *) buf;
263 uint8_t length;
264
265 client->req_id = 0;
266
267 if (!dev)
268 goto failed;
269
270 memset(buf, 0, sizeof(buf));
271
272 length = headset_generate_capability(dev, (void *) rsp->data);
273
274 rsp->h.type = BT_RESPONSE;
275 rsp->h.name = BT_GET_CAPABILITIES;
276 rsp->h.length = sizeof(*rsp) + length;
277
278 ba2str(&dev->src, rsp->source);
279 ba2str(&dev->dst, rsp->destination);
280 strncpy(rsp->object, dev->path, sizeof(rsp->object));
281
282 unix_ipc_sendmsg(client, &rsp->h);
283
284 return;
285
286 failed:
287 error("discovery failed");
288 unix_ipc_error(client, BT_SET_CONFIGURATION, EIO);
289 }
290
headset_setup_complete(struct audio_device * dev,void * user_data)291 static void headset_setup_complete(struct audio_device *dev, void *user_data)
292 {
293 struct unix_client *client = user_data;
294 char buf[BT_SUGGESTED_BUFFER_SIZE];
295 struct bt_set_configuration_rsp *rsp = (void *) buf;
296
297 client->req_id = 0;
298
299 if (!dev)
300 goto failed;
301
302 memset(buf, 0, sizeof(buf));
303
304 rsp->h.type = BT_RESPONSE;
305 rsp->h.name = BT_SET_CONFIGURATION;
306 rsp->h.length = sizeof(*rsp);
307
308 rsp->link_mtu = 48;
309
310 client->data_fd = headset_get_sco_fd(dev);
311
312 unix_ipc_sendmsg(client, &rsp->h);
313
314 return;
315
316 failed:
317 error("config failed");
318 unix_ipc_error(client, BT_SET_CONFIGURATION, EIO);
319 }
320
gateway_setup_complete(struct audio_device * dev,GError * err,void * user_data)321 static void gateway_setup_complete(struct audio_device *dev, GError *err, void *user_data)
322 {
323 struct unix_client *client = user_data;
324 char buf[BT_SUGGESTED_BUFFER_SIZE];
325 struct bt_set_configuration_rsp *rsp = (void *) buf;
326
327 if (err) {
328 unix_ipc_error(client, BT_SET_CONFIGURATION, err->code);
329 return;
330 }
331
332 client->req_id = 0;
333
334 memset(buf, 0, sizeof(buf));
335
336 rsp->h.type = BT_RESPONSE;
337 rsp->h.name = BT_SET_CONFIGURATION;
338 rsp->h.length = sizeof(*rsp);
339
340 rsp->link_mtu = 48;
341
342 client->data_fd = gateway_get_sco_fd(dev);
343
344 unix_ipc_sendmsg(client, &rsp->h);
345 }
346
headset_resume_complete(struct audio_device * dev,void * user_data)347 static void headset_resume_complete(struct audio_device *dev, void *user_data)
348 {
349 struct unix_client *client = user_data;
350 char buf[BT_SUGGESTED_BUFFER_SIZE];
351 struct bt_start_stream_rsp *rsp = (void *) buf;
352 struct bt_new_stream_ind *ind = (void *) buf;
353
354 client->req_id = 0;
355
356 if (!dev)
357 goto failed;
358
359 client->data_fd = headset_get_sco_fd(dev);
360 if (client->data_fd < 0) {
361 error("Unable to get a SCO fd");
362 goto failed;
363 }
364
365 memset(buf, 0, sizeof(buf));
366 rsp->h.type = BT_RESPONSE;
367 rsp->h.name = BT_START_STREAM;
368 rsp->h.length = sizeof(*rsp);
369
370 unix_ipc_sendmsg(client, &rsp->h);
371
372 memset(buf, 0, sizeof(buf));
373 ind->h.type = BT_INDICATION;
374 ind->h.name = BT_NEW_STREAM;
375 ind->h.length = sizeof(*ind);
376
377 unix_ipc_sendmsg(client, &ind->h);
378
379 if (unix_sendmsg_fd(client->sock, client->data_fd) < 0) {
380 error("unix_sendmsg_fd: %s(%d)", strerror(errno), errno);
381 goto failed;
382 }
383
384 return;
385
386 failed:
387 error("headset_resume_complete: resume failed");
388 unix_ipc_error(client, BT_START_STREAM, EIO);
389 }
390
gateway_resume_complete(struct audio_device * dev,GError * err,void * user_data)391 static void gateway_resume_complete(struct audio_device *dev, GError *err, void *user_data)
392 {
393 struct unix_client *client = user_data;
394 char buf[BT_SUGGESTED_BUFFER_SIZE];
395 struct bt_start_stream_rsp *rsp = (void *) buf;
396 struct bt_new_stream_ind *ind = (void *) buf;
397
398 if (err) {
399 unix_ipc_error(client, BT_START_STREAM, err->code);
400 return;
401 }
402
403 memset(buf, 0, sizeof(buf));
404 rsp->h.type = BT_RESPONSE;
405 rsp->h.name = BT_START_STREAM;
406 rsp->h.length = sizeof(*rsp);
407
408 unix_ipc_sendmsg(client, &rsp->h);
409
410 memset(buf, 0, sizeof(buf));
411 ind->h.type = BT_INDICATION;
412 ind->h.name = BT_NEW_STREAM;
413 ind->h.length = sizeof(*ind);
414
415 unix_ipc_sendmsg(client, &ind->h);
416
417 client->data_fd = gateway_get_sco_fd(dev);
418 if (unix_sendmsg_fd(client->sock, client->data_fd) < 0) {
419 error("unix_sendmsg_fd: %s(%d)", strerror(errno), errno);
420 unix_ipc_error(client, BT_START_STREAM, EIO);
421 }
422
423 client->req_id = 0;
424 }
425
headset_suspend_complete(struct audio_device * dev,void * user_data)426 static void headset_suspend_complete(struct audio_device *dev, void *user_data)
427 {
428 struct unix_client *client = user_data;
429 char buf[BT_SUGGESTED_BUFFER_SIZE];
430 struct bt_stop_stream_rsp *rsp = (void *) buf;
431
432 if (!dev)
433 goto failed;
434
435 memset(buf, 0, sizeof(buf));
436 rsp->h.type = BT_RESPONSE;
437 rsp->h.name = BT_STOP_STREAM;
438 rsp->h.length = sizeof(*rsp);
439
440 unix_ipc_sendmsg(client, &rsp->h);
441
442 return;
443
444 failed:
445 error("suspend failed");
446 unix_ipc_error(client, BT_STOP_STREAM, EIO);
447 }
448
print_mpeg12(struct mpeg_codec_cap * mpeg)449 static void print_mpeg12(struct mpeg_codec_cap *mpeg)
450 {
451 DBG("Media Codec: MPEG12"
452 " Channel Modes: %s%s%s%s"
453 " Frequencies: %s%s%s%s%s%s"
454 " Layers: %s%s%s"
455 " CRC: %s",
456 mpeg->channel_mode & MPEG_CHANNEL_MODE_MONO ? "Mono " : "",
457 mpeg->channel_mode & MPEG_CHANNEL_MODE_DUAL_CHANNEL ?
458 "DualChannel " : "",
459 mpeg->channel_mode & MPEG_CHANNEL_MODE_STEREO ? "Stereo " : "",
460 mpeg->channel_mode & MPEG_CHANNEL_MODE_JOINT_STEREO ?
461 "JointStereo " : "",
462 mpeg->frequency & MPEG_SAMPLING_FREQ_16000 ? "16Khz " : "",
463 mpeg->frequency & MPEG_SAMPLING_FREQ_22050 ? "22.05Khz " : "",
464 mpeg->frequency & MPEG_SAMPLING_FREQ_24000 ? "24Khz " : "",
465 mpeg->frequency & MPEG_SAMPLING_FREQ_32000 ? "32Khz " : "",
466 mpeg->frequency & MPEG_SAMPLING_FREQ_44100 ? "44.1Khz " : "",
467 mpeg->frequency & MPEG_SAMPLING_FREQ_48000 ? "48Khz " : "",
468 mpeg->layer & MPEG_LAYER_MP1 ? "1 " : "",
469 mpeg->layer & MPEG_LAYER_MP2 ? "2 " : "",
470 mpeg->layer & MPEG_LAYER_MP3 ? "3 " : "",
471 mpeg->crc ? "Yes" : "No");
472 }
473
print_sbc(struct sbc_codec_cap * sbc)474 static void print_sbc(struct sbc_codec_cap *sbc)
475 {
476 DBG("Media Codec: SBC"
477 " Channel Modes: %s%s%s%s"
478 " Frequencies: %s%s%s%s"
479 " Subbands: %s%s"
480 " Blocks: %s%s%s%s"
481 " Bitpool: %d-%d",
482 sbc->channel_mode & SBC_CHANNEL_MODE_MONO ? "Mono " : "",
483 sbc->channel_mode & SBC_CHANNEL_MODE_DUAL_CHANNEL ?
484 "DualChannel " : "",
485 sbc->channel_mode & SBC_CHANNEL_MODE_STEREO ? "Stereo " : "",
486 sbc->channel_mode & SBC_CHANNEL_MODE_JOINT_STEREO ? "JointStereo" : "",
487 sbc->frequency & SBC_SAMPLING_FREQ_16000 ? "16Khz " : "",
488 sbc->frequency & SBC_SAMPLING_FREQ_32000 ? "32Khz " : "",
489 sbc->frequency & SBC_SAMPLING_FREQ_44100 ? "44.1Khz " : "",
490 sbc->frequency & SBC_SAMPLING_FREQ_48000 ? "48Khz " : "",
491 sbc->subbands & SBC_SUBBANDS_4 ? "4 " : "",
492 sbc->subbands & SBC_SUBBANDS_8 ? "8 " : "",
493 sbc->block_length & SBC_BLOCK_LENGTH_4 ? "4 " : "",
494 sbc->block_length & SBC_BLOCK_LENGTH_8 ? "8 " : "",
495 sbc->block_length & SBC_BLOCK_LENGTH_12 ? "12 " : "",
496 sbc->block_length & SBC_BLOCK_LENGTH_16 ? "16 " : "",
497 sbc->min_bitpool, sbc->max_bitpool);
498 }
499
a2dp_append_codec(struct bt_get_capabilities_rsp * rsp,struct avdtp_service_capability * cap,uint8_t seid,uint8_t type,uint8_t configured,uint8_t lock)500 static int a2dp_append_codec(struct bt_get_capabilities_rsp *rsp,
501 struct avdtp_service_capability *cap,
502 uint8_t seid,
503 uint8_t type,
504 uint8_t configured,
505 uint8_t lock)
506 {
507 struct avdtp_media_codec_capability *codec_cap = (void *) cap->data;
508 codec_capabilities_t *codec = (void *) rsp + rsp->h.length;
509 size_t space_left;
510
511 if (rsp->h.length > BT_SUGGESTED_BUFFER_SIZE)
512 return -ENOMEM;
513
514 space_left = BT_SUGGESTED_BUFFER_SIZE - rsp->h.length;
515
516 /* endianess prevent direct cast */
517 if (codec_cap->media_codec_type == A2DP_CODEC_SBC) {
518 struct sbc_codec_cap *sbc_cap = (void *) codec_cap;
519 sbc_capabilities_t *sbc = (void *) codec;
520
521 if (space_left < sizeof(sbc_capabilities_t))
522 return -ENOMEM;
523
524 if (type == AVDTP_SEP_TYPE_SINK)
525 codec->type = BT_A2DP_SBC_SINK;
526 else if (type == AVDTP_SEP_TYPE_SOURCE)
527 codec->type = BT_A2DP_SBC_SOURCE;
528 else
529 return -EINVAL;
530
531 codec->length = sizeof(sbc_capabilities_t);
532
533 sbc->channel_mode = sbc_cap->channel_mode;
534 sbc->frequency = sbc_cap->frequency;
535 sbc->allocation_method = sbc_cap->allocation_method;
536 sbc->subbands = sbc_cap->subbands;
537 sbc->block_length = sbc_cap->block_length;
538 sbc->min_bitpool = sbc_cap->min_bitpool;
539 sbc->max_bitpool = sbc_cap->max_bitpool;
540
541 print_sbc(sbc_cap);
542 } else if (codec_cap->media_codec_type == A2DP_CODEC_MPEG12) {
543 struct mpeg_codec_cap *mpeg_cap = (void *) codec_cap;
544 mpeg_capabilities_t *mpeg = (void *) codec;
545
546 if (space_left < sizeof(mpeg_capabilities_t))
547 return -ENOMEM;
548
549 if (type == AVDTP_SEP_TYPE_SINK)
550 codec->type = BT_A2DP_MPEG12_SINK;
551 else if (type == AVDTP_SEP_TYPE_SOURCE)
552 codec->type = BT_A2DP_MPEG12_SOURCE;
553 else
554 return -EINVAL;
555
556 codec->length = sizeof(mpeg_capabilities_t);
557
558 mpeg->channel_mode = mpeg_cap->channel_mode;
559 mpeg->crc = mpeg_cap->crc;
560 mpeg->layer = mpeg_cap->layer;
561 mpeg->frequency = mpeg_cap->frequency;
562 mpeg->mpf = mpeg_cap->mpf;
563 mpeg->bitrate = mpeg_cap->bitrate;
564
565 print_mpeg12(mpeg_cap);
566 } else {
567 size_t codec_length, type_length, total_length;
568
569 codec_length = cap->length - (sizeof(struct avdtp_service_capability)
570 + sizeof(struct avdtp_media_codec_capability));
571 type_length = sizeof(codec_cap->media_codec_type);
572 total_length = type_length + codec_length +
573 sizeof(codec_capabilities_t);
574
575 if (space_left < total_length)
576 return -ENOMEM;
577
578 if (type == AVDTP_SEP_TYPE_SINK)
579 codec->type = BT_A2DP_UNKNOWN_SINK;
580 else if (type == AVDTP_SEP_TYPE_SOURCE)
581 codec->type = BT_A2DP_UNKNOWN_SOURCE;
582 else
583 return -EINVAL;
584
585 codec->length = total_length;
586 memcpy(codec->data, &codec_cap->media_codec_type, type_length);
587 memcpy(codec->data + type_length, codec_cap->data,
588 codec_length);
589 }
590
591 codec->seid = seid;
592 codec->configured = configured;
593 codec->lock = lock;
594 rsp->h.length += codec->length;
595
596 DBG("Append %s seid %d - length %d - total %d",
597 configured ? "configured" : "", seid, codec->length,
598 rsp->h.length);
599
600 return 0;
601 }
602
a2dp_discovery_complete(struct avdtp * session,GSList * seps,struct avdtp_error * err,void * user_data)603 static void a2dp_discovery_complete(struct avdtp *session, GSList *seps,
604 struct avdtp_error *err,
605 void *user_data)
606 {
607 struct unix_client *client = user_data;
608 char buf[BT_SUGGESTED_BUFFER_SIZE];
609 struct bt_get_capabilities_rsp *rsp = (void *) buf;
610 struct a2dp_data *a2dp = &client->d.a2dp;
611 GSList *l;
612
613 if (!g_slist_find(clients, client)) {
614 DBG("Client disconnected during discovery");
615 return;
616 }
617
618 if (err)
619 goto failed;
620
621 memset(buf, 0, sizeof(buf));
622 client->req_id = 0;
623
624 rsp->h.type = BT_RESPONSE;
625 rsp->h.name = BT_GET_CAPABILITIES;
626 rsp->h.length = sizeof(*rsp);
627 ba2str(&client->dev->src, rsp->source);
628 ba2str(&client->dev->dst, rsp->destination);
629 strncpy(rsp->object, client->dev->path, sizeof(rsp->object));
630
631 for (l = seps; l; l = g_slist_next(l)) {
632 struct avdtp_remote_sep *rsep = l->data;
633 struct a2dp_sep *sep;
634 struct avdtp_service_capability *cap;
635 struct avdtp_stream *stream;
636 uint8_t type, seid, configured = 0, lock = 0;
637 GSList *cl;
638
639 type = avdtp_get_type(rsep);
640
641 if (type != AVDTP_SEP_TYPE_SINK &&
642 type != AVDTP_SEP_TYPE_SOURCE)
643 continue;
644
645 cap = avdtp_get_codec(rsep);
646
647 if (cap->category != AVDTP_MEDIA_CODEC)
648 continue;
649
650 seid = avdtp_get_seid(rsep);
651
652 if (client->seid != 0 && client->seid != seid)
653 continue;
654
655 stream = avdtp_get_stream(rsep);
656 if (stream) {
657 configured = 1;
658 if (client->seid == seid)
659 cap = avdtp_stream_get_codec(stream);
660 }
661
662 for (cl = clients; cl; cl = cl->next) {
663 struct unix_client *c = cl->data;
664 struct a2dp_data *ca2dp = &c->d.a2dp;
665
666 if (ca2dp->session == session && c->seid == seid) {
667 lock = c->lock;
668 break;
669 }
670 }
671
672 sep = a2dp_get_sep(session, stream);
673 if (sep && a2dp_sep_get_lock(sep))
674 lock = BT_WRITE_LOCK;
675
676 a2dp_append_codec(rsp, cap, seid, type, configured, lock);
677 }
678
679 unix_ipc_sendmsg(client, &rsp->h);
680
681 return;
682
683 failed:
684 error("discovery failed");
685 unix_ipc_error(client, BT_GET_CAPABILITIES, EIO);
686
687 if (a2dp->sep) {
688 a2dp_sep_unlock(a2dp->sep, a2dp->session);
689 a2dp->sep = NULL;
690 }
691
692 avdtp_unref(a2dp->session);
693 a2dp->session = NULL;
694 a2dp->stream = NULL;
695 }
696
a2dp_config_complete(struct avdtp * session,struct a2dp_sep * sep,struct avdtp_stream * stream,struct avdtp_error * err,void * user_data)697 static void a2dp_config_complete(struct avdtp *session, struct a2dp_sep *sep,
698 struct avdtp_stream *stream,
699 struct avdtp_error *err,
700 void *user_data)
701 {
702 struct unix_client *client = user_data;
703 char buf[BT_SUGGESTED_BUFFER_SIZE];
704 struct bt_set_configuration_rsp *rsp = (void *) buf;
705 struct a2dp_data *a2dp = &client->d.a2dp;
706 uint16_t imtu, omtu;
707 GSList *caps;
708
709 client->req_id = 0;
710
711 if (err)
712 goto failed;
713
714 memset(buf, 0, sizeof(buf));
715
716 if (!stream)
717 goto failed;
718
719 if (client->cb_id > 0)
720 avdtp_stream_remove_cb(a2dp->session, a2dp->stream,
721 client->cb_id);
722
723 a2dp->sep = sep;
724 a2dp->stream = stream;
725
726 if (!avdtp_stream_get_transport(stream, &client->data_fd, &imtu, &omtu,
727 &caps)) {
728 error("Unable to get stream transport");
729 goto failed;
730 }
731
732 rsp->h.type = BT_RESPONSE;
733 rsp->h.name = BT_SET_CONFIGURATION;
734 rsp->h.length = sizeof(*rsp);
735
736 /* FIXME: Use imtu when fd_opt is CFG_FD_OPT_READ */
737 rsp->link_mtu = omtu;
738
739 unix_ipc_sendmsg(client, &rsp->h);
740
741 client->cb_id = avdtp_stream_add_cb(session, stream,
742 stream_state_changed, client);
743
744 return;
745
746 failed:
747 error("config failed");
748
749 unix_ipc_error(client, BT_SET_CONFIGURATION, EIO);
750
751 avdtp_unref(a2dp->session);
752
753 a2dp->session = NULL;
754 a2dp->stream = NULL;
755 a2dp->sep = NULL;
756 }
757
a2dp_resume_complete(struct avdtp * session,struct avdtp_error * err,void * user_data)758 static void a2dp_resume_complete(struct avdtp *session,
759 struct avdtp_error *err, void *user_data)
760 {
761 struct unix_client *client = user_data;
762 char buf[BT_SUGGESTED_BUFFER_SIZE];
763 struct bt_start_stream_rsp *rsp = (void *) buf;
764 struct bt_new_stream_ind *ind = (void *) buf;
765 struct a2dp_data *a2dp = &client->d.a2dp;
766
767 if (err)
768 goto failed;
769
770 memset(buf, 0, sizeof(buf));
771 rsp->h.type = BT_RESPONSE;
772 rsp->h.name = BT_START_STREAM;
773 rsp->h.length = sizeof(*rsp);
774
775 unix_ipc_sendmsg(client, &rsp->h);
776
777 memset(buf, 0, sizeof(buf));
778 ind->h.type = BT_RESPONSE;
779 ind->h.name = BT_NEW_STREAM;
780 rsp->h.length = sizeof(*ind);
781
782 unix_ipc_sendmsg(client, &ind->h);
783
784 if (unix_sendmsg_fd(client->sock, client->data_fd) < 0) {
785 error("unix_sendmsg_fd: %s(%d)", strerror(errno), errno);
786 goto failed;
787 }
788
789 return;
790
791 failed:
792 error("resume failed");
793
794 unix_ipc_error(client, BT_START_STREAM, EIO);
795
796 if (client->cb_id > 0) {
797 avdtp_stream_remove_cb(a2dp->session, a2dp->stream,
798 client->cb_id);
799 client->cb_id = 0;
800 }
801
802 if (a2dp->sep) {
803 a2dp_sep_unlock(a2dp->sep, a2dp->session);
804 a2dp->sep = NULL;
805 }
806
807 avdtp_unref(a2dp->session);
808 a2dp->session = NULL;
809 a2dp->stream = NULL;
810 }
811
a2dp_suspend_complete(struct avdtp * session,struct avdtp_error * err,void * user_data)812 static void a2dp_suspend_complete(struct avdtp *session,
813 struct avdtp_error *err, void *user_data)
814 {
815 struct unix_client *client = user_data;
816 char buf[BT_SUGGESTED_BUFFER_SIZE];
817 struct bt_stop_stream_rsp *rsp = (void *) buf;
818 struct a2dp_data *a2dp = &client->d.a2dp;
819
820 if (err)
821 goto failed;
822
823 memset(buf, 0, sizeof(buf));
824 rsp->h.type = BT_RESPONSE;
825 rsp->h.name = BT_STOP_STREAM;
826 rsp->h.length = sizeof(*rsp);
827
828 unix_ipc_sendmsg(client, &rsp->h);
829
830 return;
831
832 failed:
833 error("suspend failed");
834
835 unix_ipc_error(client, BT_STOP_STREAM, EIO);
836
837 if (a2dp->sep) {
838 a2dp_sep_unlock(a2dp->sep, a2dp->session);
839 a2dp->sep = NULL;
840 }
841
842 avdtp_unref(a2dp->session);
843 a2dp->session = NULL;
844 a2dp->stream = NULL;
845 }
846
start_discovery(struct audio_device * dev,struct unix_client * client)847 static void start_discovery(struct audio_device *dev, struct unix_client *client)
848 {
849 struct a2dp_data *a2dp;
850 int err = 0;
851
852 switch (client->type) {
853 case TYPE_SINK:
854 case TYPE_SOURCE:
855 a2dp = &client->d.a2dp;
856
857 if (!a2dp->session)
858 a2dp->session = avdtp_get(&dev->src, &dev->dst);
859
860 if (!a2dp->session) {
861 error("Unable to get a session");
862 goto failed;
863 }
864
865 err = avdtp_discover(a2dp->session, a2dp_discovery_complete,
866 client);
867 if (err) {
868 if (a2dp->session) {
869 avdtp_unref(a2dp->session);
870 a2dp->session = NULL;
871 }
872 goto failed;
873 }
874 break;
875
876 case TYPE_HEADSET:
877 case TYPE_GATEWAY:
878 headset_discovery_complete(dev, client);
879 break;
880
881 default:
882 error("No known services for device");
883 goto failed;
884 }
885
886 client->dev = dev;
887
888 return;
889
890 failed:
891 unix_ipc_error(client, BT_GET_CAPABILITIES, err ? : EIO);
892 }
893
open_complete(struct audio_device * dev,void * user_data)894 static void open_complete(struct audio_device *dev, void *user_data)
895 {
896 struct unix_client *client = user_data;
897 char buf[BT_SUGGESTED_BUFFER_SIZE];
898 struct bt_open_rsp *rsp = (void *) buf;
899
900 memset(buf, 0, sizeof(buf));
901
902 rsp->h.type = BT_RESPONSE;
903 rsp->h.name = BT_OPEN;
904 rsp->h.length = sizeof(*rsp);
905
906 ba2str(&dev->src, rsp->source);
907 ba2str(&dev->dst, rsp->destination);
908 strncpy(rsp->object, dev->path, sizeof(rsp->object));
909
910 unix_ipc_sendmsg(client, &rsp->h);
911 }
912
start_open(struct audio_device * dev,struct unix_client * client)913 static void start_open(struct audio_device *dev, struct unix_client *client)
914 {
915 struct a2dp_data *a2dp;
916 struct headset_data *hs;
917 struct avdtp_remote_sep *rsep;
918 gboolean unref_avdtp_on_fail = FALSE;
919
920 switch (client->type) {
921 case TYPE_SINK:
922 case TYPE_SOURCE:
923 a2dp = &client->d.a2dp;
924
925 if (!a2dp->session) {
926 a2dp->session = avdtp_get(&dev->src, &dev->dst);
927 unref_avdtp_on_fail = TRUE;
928 }
929
930 if (!a2dp->session) {
931 error("Unable to get a session");
932 goto failed;
933 }
934
935 if (a2dp->sep) {
936 error("Client already has an opened session");
937 goto failed;
938 }
939
940 rsep = avdtp_get_remote_sep(a2dp->session, client->seid);
941 if (!rsep) {
942 error("Invalid seid %d", client->seid);
943 goto failed;
944 }
945
946 a2dp->sep = a2dp_get(a2dp->session, rsep);
947 if (!a2dp->sep) {
948 error("seid %d not available or locked", client->seid);
949 goto failed;
950 }
951
952 if (!a2dp_sep_lock(a2dp->sep, a2dp->session)) {
953 error("Unable to open seid %d", client->seid);
954 a2dp->sep = NULL;
955 goto failed;
956 }
957
958 break;
959
960 case TYPE_HEADSET:
961 hs = &client->d.hs;
962
963 if (hs->locked) {
964 error("Client already has an opened session");
965 goto failed;
966 }
967
968 hs->locked = headset_lock(dev, client->lock);
969 if (!hs->locked) {
970 error("Unable to open seid %d", client->seid);
971 goto failed;
972 }
973 break;
974
975 case TYPE_GATEWAY:
976 break;
977 default:
978 error("No known services for device");
979 goto failed;
980 }
981
982 client->dev = dev;
983
984 open_complete(dev, client);
985
986 return;
987
988 failed:
989 if (unref_avdtp_on_fail && a2dp->session) {
990 avdtp_unref(a2dp->session);
991 a2dp->session = NULL;
992 }
993 unix_ipc_error(client, BT_OPEN, EINVAL);
994 }
995
start_config(struct audio_device * dev,struct unix_client * client)996 static void start_config(struct audio_device *dev, struct unix_client *client)
997 {
998 struct a2dp_data *a2dp;
999 struct headset_data *hs;
1000 unsigned int id;
1001
1002 switch (client->type) {
1003 case TYPE_SINK:
1004 case TYPE_SOURCE:
1005 a2dp = &client->d.a2dp;
1006
1007 if (!a2dp->session)
1008 a2dp->session = avdtp_get(&dev->src, &dev->dst);
1009
1010 if (!a2dp->session) {
1011 error("Unable to get a session");
1012 goto failed;
1013 }
1014
1015 if (!a2dp->sep) {
1016 error("seid %d not opened", client->seid);
1017 goto failed;
1018 }
1019
1020 id = a2dp_config(a2dp->session, a2dp->sep, a2dp_config_complete,
1021 client->caps, client);
1022 client->cancel = a2dp_cancel;
1023 break;
1024
1025 case TYPE_HEADSET:
1026 hs = &client->d.hs;
1027
1028 if (!hs->locked) {
1029 error("seid %d not opened", client->seid);
1030 goto failed;
1031 }
1032
1033 id = headset_config_stream(dev, TRUE, headset_setup_complete,
1034 client);
1035 client->cancel = headset_cancel_stream;
1036 break;
1037 case TYPE_GATEWAY:
1038 if (gateway_config_stream(dev, gateway_setup_complete, client) >= 0) {
1039 client->cancel = gateway_cancel_stream;
1040 id = 1;
1041 } else
1042 id = 0;
1043 break;
1044
1045 default:
1046 error("No known services for device");
1047 goto failed;
1048 }
1049
1050 if (id == 0) {
1051 error("config failed");
1052 goto failed;
1053 }
1054
1055 client->req_id = id;
1056
1057 return;
1058
1059 failed:
1060 unix_ipc_error(client, BT_SET_CONFIGURATION, EIO);
1061 }
1062
start_resume(struct audio_device * dev,struct unix_client * client)1063 static void start_resume(struct audio_device *dev, struct unix_client *client)
1064 {
1065 struct a2dp_data *a2dp;
1066 struct headset_data *hs;
1067 unsigned int id;
1068 gboolean unref_avdtp_on_fail = FALSE;
1069
1070 switch (client->type) {
1071 case TYPE_SINK:
1072 case TYPE_SOURCE:
1073 a2dp = &client->d.a2dp;
1074
1075 if (!a2dp->session) {
1076 a2dp->session = avdtp_get(&dev->src, &dev->dst);
1077 unref_avdtp_on_fail = TRUE;
1078 }
1079
1080 if (!a2dp->session) {
1081 error("Unable to get a session");
1082 goto failed;
1083 }
1084
1085 if (!a2dp->sep) {
1086 error("seid not opened");
1087 goto failed;
1088 }
1089
1090 id = a2dp_resume(a2dp->session, a2dp->sep, a2dp_resume_complete,
1091 client);
1092 client->cancel = a2dp_cancel;
1093
1094 break;
1095
1096 case TYPE_HEADSET:
1097 hs = &client->d.hs;
1098
1099 if (!hs->locked) {
1100 error("seid not opened");
1101 goto failed;
1102 }
1103
1104 id = headset_request_stream(dev, headset_resume_complete,
1105 client);
1106 client->cancel = headset_cancel_stream;
1107 break;
1108
1109 case TYPE_GATEWAY:
1110 if (gateway_request_stream(dev, gateway_resume_complete, client))
1111 id = 1;
1112 else
1113 id = 0;
1114 client->cancel = gateway_cancel_stream;
1115 break;
1116
1117 default:
1118 error("No known services for device");
1119 goto failed;
1120 }
1121
1122 if (id == 0) {
1123 error("start_resume: resume failed");
1124 goto failed;
1125 }
1126
1127 client->req_id = id;
1128
1129 return;
1130
1131 failed:
1132 if (unref_avdtp_on_fail && a2dp->session) {
1133 avdtp_unref(a2dp->session);
1134 a2dp->session = NULL;
1135 }
1136 unix_ipc_error(client, BT_START_STREAM, EIO);
1137 }
1138
start_suspend(struct audio_device * dev,struct unix_client * client)1139 static void start_suspend(struct audio_device *dev, struct unix_client *client)
1140 {
1141 struct a2dp_data *a2dp;
1142 struct headset_data *hs;
1143 unsigned int id;
1144 gboolean unref_avdtp_on_fail = FALSE;
1145
1146 switch (client->type) {
1147 case TYPE_SINK:
1148 case TYPE_SOURCE:
1149 a2dp = &client->d.a2dp;
1150
1151 if (!a2dp->session) {
1152 a2dp->session = avdtp_get(&dev->src, &dev->dst);
1153 unref_avdtp_on_fail = TRUE;
1154 }
1155
1156 if (!a2dp->session) {
1157 error("Unable to get a session");
1158 goto failed;
1159 }
1160
1161 if (!a2dp->sep) {
1162 error("Unable to get a sep");
1163 goto failed;
1164 }
1165
1166 id = a2dp_suspend(a2dp->session, a2dp->sep,
1167 a2dp_suspend_complete, client);
1168 client->cancel = a2dp_cancel;
1169 break;
1170
1171 case TYPE_HEADSET:
1172 hs = &client->d.hs;
1173
1174 if (!hs->locked) {
1175 error("seid not opened");
1176 goto failed;
1177 }
1178
1179 id = headset_suspend_stream(dev, headset_suspend_complete,
1180 client);
1181 client->cancel = headset_cancel_stream;
1182 break;
1183
1184 case TYPE_GATEWAY:
1185 gateway_suspend_stream(dev);
1186 client->cancel = gateway_cancel_stream;
1187 headset_suspend_complete(dev, client);
1188 id = 1;
1189 break;
1190
1191 default:
1192 error("No known services for device");
1193 goto failed;
1194 }
1195
1196 if (id == 0) {
1197 error("suspend failed");
1198 goto failed;
1199 }
1200
1201 return;
1202
1203 failed:
1204 if (unref_avdtp_on_fail && a2dp->session) {
1205 avdtp_unref(a2dp->session);
1206 a2dp->session = NULL;
1207 }
1208 unix_ipc_error(client, BT_STOP_STREAM, EIO);
1209 }
1210
close_complete(struct audio_device * dev,void * user_data)1211 static void close_complete(struct audio_device *dev, void *user_data)
1212 {
1213 struct unix_client *client = user_data;
1214 char buf[BT_SUGGESTED_BUFFER_SIZE];
1215 struct bt_close_rsp *rsp = (void *) buf;
1216
1217 memset(buf, 0, sizeof(buf));
1218
1219 rsp->h.type = BT_RESPONSE;
1220 rsp->h.name = BT_CLOSE;
1221 rsp->h.length = sizeof(*rsp);
1222
1223 unix_ipc_sendmsg(client, &rsp->h);
1224
1225 return;
1226 }
1227
start_close(struct audio_device * dev,struct unix_client * client,gboolean reply)1228 static void start_close(struct audio_device *dev, struct unix_client *client,
1229 gboolean reply)
1230 {
1231 struct a2dp_data *a2dp;
1232 struct headset_data *hs;
1233
1234 if (!client->dev)
1235 goto failed;
1236
1237 switch (client->type) {
1238 case TYPE_HEADSET:
1239 hs = &client->d.hs;
1240
1241 if (client->dev && hs->locked) {
1242 headset_unlock(client->dev, client->lock);
1243 hs->locked = FALSE;
1244 }
1245 break;
1246 case TYPE_GATEWAY:
1247 break;
1248 case TYPE_SOURCE:
1249 case TYPE_SINK:
1250 a2dp = &client->d.a2dp;
1251
1252 if (client->cb_id > 0)
1253 avdtp_stream_remove_cb(a2dp->session, a2dp->stream,
1254 client->cb_id);
1255 if (a2dp->sep) {
1256 a2dp_sep_unlock(a2dp->sep, a2dp->session);
1257 a2dp->sep = NULL;
1258 }
1259 if (a2dp->session) {
1260 avdtp_unref(a2dp->session);
1261 a2dp->session = NULL;
1262 }
1263 break;
1264 default:
1265 error("No known services for device");
1266 goto failed;
1267 }
1268
1269 if (!reply)
1270 return;
1271
1272 close_complete(dev, client);
1273 client->dev = NULL;
1274
1275 return;
1276
1277 failed:
1278 if (reply)
1279 unix_ipc_error(client, BT_STOP_STREAM, EINVAL);
1280 }
1281
handle_getcapabilities_req(struct unix_client * client,struct bt_get_capabilities_req * req)1282 static void handle_getcapabilities_req(struct unix_client *client,
1283 struct bt_get_capabilities_req *req)
1284 {
1285 struct audio_device *dev;
1286 bdaddr_t src, dst;
1287 int err = EIO;
1288 const char *interface;
1289
1290 if (!check_nul(req->source) || !check_nul(req->destination) ||
1291 !check_nul(req->object)) {
1292 err = EINVAL;
1293 goto failed;
1294 }
1295
1296 str2ba(req->source, &src);
1297 str2ba(req->destination, &dst);
1298
1299 if (!manager_find_device(req->object, &src, &dst, NULL, FALSE))
1300 goto failed;
1301
1302 if (req->transport == BT_CAPABILITIES_TRANSPORT_SCO)
1303 interface = AUDIO_HEADSET_INTERFACE;
1304 else if (req->transport == BT_CAPABILITIES_TRANSPORT_A2DP)
1305 interface = AUDIO_SINK_INTERFACE;
1306 else
1307 interface = client->interface;
1308
1309 dev = manager_find_device(req->object, &src, &dst, interface, TRUE);
1310 if (!dev && (req->flags & BT_FLAG_AUTOCONNECT))
1311 dev = manager_find_device(req->object, &src, &dst,
1312 interface, FALSE);
1313
1314 if (!dev) {
1315 if (req->transport == BT_CAPABILITIES_TRANSPORT_SCO)
1316 interface = AUDIO_GATEWAY_INTERFACE;
1317 else if (req->transport == BT_CAPABILITIES_TRANSPORT_A2DP)
1318 interface = AUDIO_SOURCE_INTERFACE;
1319 else
1320 interface = NULL;
1321 dev = manager_find_device(req->object, &src, &dst,
1322 interface, TRUE);
1323 if (!dev && (req->flags & BT_FLAG_AUTOCONNECT))
1324 dev = manager_find_device(req->object, &src, &dst,
1325 interface, FALSE);
1326 }
1327
1328 if (!dev) {
1329 error("Unable to find a matching device");
1330 goto failed;
1331 }
1332
1333 client->type = select_service(dev, interface);
1334 if (client->type == TYPE_NONE) {
1335 error("No matching service found");
1336 goto failed;
1337 }
1338
1339 if (g_strcmp0(interface, client->interface) != 0) {
1340 g_free(client->interface);
1341 client->interface = g_strdup(interface);
1342 }
1343
1344 client->seid = req->seid;
1345
1346 start_discovery(dev, client);
1347
1348 return;
1349
1350 failed:
1351 unix_ipc_error(client, BT_GET_CAPABILITIES, err);
1352 }
1353
handle_sco_open(struct unix_client * client,struct bt_open_req * req)1354 static int handle_sco_open(struct unix_client *client, struct bt_open_req *req)
1355 {
1356 if (!client->interface)
1357 client->interface = g_strdup(AUDIO_HEADSET_INTERFACE);
1358 else if (!g_str_equal(client->interface, AUDIO_HEADSET_INTERFACE) &&
1359 !g_str_equal(client->interface, AUDIO_GATEWAY_INTERFACE))
1360 return -EIO;
1361
1362 DBG("open sco - object=%s source=%s destination=%s lock=%s%s",
1363 strcmp(req->object, "") ? req->object : "ANY",
1364 strcmp(req->source, "") ? req->source : "ANY",
1365 strcmp(req->destination, "") ? req->destination : "ANY",
1366 req->lock & BT_READ_LOCK ? "read" : "",
1367 req->lock & BT_WRITE_LOCK ? "write" : "");
1368
1369 return 0;
1370 }
1371
handle_a2dp_open(struct unix_client * client,struct bt_open_req * req)1372 static int handle_a2dp_open(struct unix_client *client, struct bt_open_req *req)
1373 {
1374 if (!client->interface)
1375 /* FIXME: are we treating a sink or a source? */
1376 client->interface = g_strdup(AUDIO_SINK_INTERFACE);
1377 else if (!g_str_equal(client->interface, AUDIO_SINK_INTERFACE) &&
1378 !g_str_equal(client->interface, AUDIO_SOURCE_INTERFACE))
1379 return -EIO;
1380
1381 DBG("open a2dp - object=%s source=%s destination=%s lock=%s%s",
1382 strcmp(req->object, "") ? req->object : "ANY",
1383 strcmp(req->source, "") ? req->source : "ANY",
1384 strcmp(req->destination, "") ? req->destination : "ANY",
1385 req->lock & BT_READ_LOCK ? "read" : "",
1386 req->lock & BT_WRITE_LOCK ? "write" : "");
1387
1388 return 0;
1389 }
1390
handle_open_req(struct unix_client * client,struct bt_open_req * req)1391 static void handle_open_req(struct unix_client *client, struct bt_open_req *req)
1392 {
1393 struct audio_device *dev;
1394 bdaddr_t src, dst;
1395 int err = 0;
1396
1397 if (!check_nul(req->source) || !check_nul(req->destination) ||
1398 !check_nul(req->object)) {
1399 err = EINVAL;
1400 goto failed;
1401 }
1402
1403 str2ba(req->source, &src);
1404 str2ba(req->destination, &dst);
1405
1406 if (req->seid > BT_A2DP_SEID_RANGE) {
1407 err = handle_sco_open(client, req);
1408 if (err < 0) {
1409 err = -err;
1410 goto failed;
1411 }
1412 } else {
1413 err = handle_a2dp_open(client, req);
1414 if (err < 0) {
1415 err = -err;
1416 goto failed;
1417 }
1418 }
1419
1420 if (!manager_find_device(req->object, &src, &dst, NULL, FALSE))
1421 goto failed;
1422
1423 dev = manager_find_device(req->object, &src, &dst, client->interface,
1424 TRUE);
1425 if (!dev)
1426 dev = manager_find_device(req->object, &src, &dst,
1427 client->interface, FALSE);
1428
1429 if (!dev)
1430 goto failed;
1431
1432 client->seid = req->seid;
1433 client->lock = req->lock;
1434
1435 start_open(dev, client);
1436
1437 return;
1438
1439 failed:
1440 unix_ipc_error(client, BT_OPEN, err ? : EIO);
1441 }
1442
handle_sco_transport(struct unix_client * client,struct bt_set_configuration_req * req)1443 static int handle_sco_transport(struct unix_client *client,
1444 struct bt_set_configuration_req *req)
1445 {
1446 struct audio_device *dev = client->dev;
1447
1448 if (!client->interface) {
1449 if (dev->headset)
1450 client->interface = g_strdup(AUDIO_HEADSET_INTERFACE);
1451 else if (dev->gateway)
1452 client->interface = g_strdup(AUDIO_GATEWAY_INTERFACE);
1453 else
1454 return -EIO;
1455 } else if (!g_str_equal(client->interface, AUDIO_HEADSET_INTERFACE) &&
1456 !g_str_equal(client->interface, AUDIO_GATEWAY_INTERFACE))
1457 return -EIO;
1458
1459 return 0;
1460 }
1461
handle_a2dp_transport(struct unix_client * client,struct bt_set_configuration_req * req)1462 static int handle_a2dp_transport(struct unix_client *client,
1463 struct bt_set_configuration_req *req)
1464 {
1465 struct avdtp_service_capability *media_transport, *media_codec;
1466 struct sbc_codec_cap sbc_cap;
1467 struct mpeg_codec_cap mpeg_cap;
1468
1469 if (!client->interface)
1470 /* FIXME: are we treating a sink or a source? */
1471 client->interface = g_strdup(AUDIO_SINK_INTERFACE);
1472 else if (!g_str_equal(client->interface, AUDIO_SINK_INTERFACE) &&
1473 !g_str_equal(client->interface, AUDIO_SOURCE_INTERFACE))
1474 return -EIO;
1475
1476 if (client->caps) {
1477 g_slist_foreach(client->caps, (GFunc) g_free, NULL);
1478 g_slist_free(client->caps);
1479 client->caps = NULL;
1480 }
1481
1482 media_transport = avdtp_service_cap_new(AVDTP_MEDIA_TRANSPORT,
1483 NULL, 0);
1484
1485 client->caps = g_slist_append(client->caps, media_transport);
1486
1487 if (req->codec.type == BT_A2DP_MPEG12_SINK ||
1488 req->codec.type == BT_A2DP_MPEG12_SOURCE) {
1489 mpeg_capabilities_t *mpeg = (void *) &req->codec;
1490
1491 memset(&mpeg_cap, 0, sizeof(mpeg_cap));
1492
1493 mpeg_cap.cap.media_type = AVDTP_MEDIA_TYPE_AUDIO;
1494 mpeg_cap.cap.media_codec_type = A2DP_CODEC_MPEG12;
1495 mpeg_cap.channel_mode = mpeg->channel_mode;
1496 mpeg_cap.crc = mpeg->crc;
1497 mpeg_cap.layer = mpeg->layer;
1498 mpeg_cap.frequency = mpeg->frequency;
1499 mpeg_cap.mpf = mpeg->mpf;
1500 mpeg_cap.bitrate = mpeg->bitrate;
1501
1502 media_codec = avdtp_service_cap_new(AVDTP_MEDIA_CODEC, &mpeg_cap,
1503 sizeof(mpeg_cap));
1504
1505 print_mpeg12(&mpeg_cap);
1506 } else if (req->codec.type == BT_A2DP_SBC_SINK ||
1507 req->codec.type == BT_A2DP_SBC_SOURCE) {
1508 sbc_capabilities_t *sbc = (void *) &req->codec;
1509
1510 memset(&sbc_cap, 0, sizeof(sbc_cap));
1511
1512 sbc_cap.cap.media_type = AVDTP_MEDIA_TYPE_AUDIO;
1513 sbc_cap.cap.media_codec_type = A2DP_CODEC_SBC;
1514 sbc_cap.channel_mode = sbc->channel_mode;
1515 sbc_cap.frequency = sbc->frequency;
1516 sbc_cap.allocation_method = sbc->allocation_method;
1517 sbc_cap.subbands = sbc->subbands;
1518 sbc_cap.block_length = sbc->block_length;
1519 sbc_cap.min_bitpool = sbc->min_bitpool;
1520 sbc_cap.max_bitpool = sbc->max_bitpool;
1521
1522 media_codec = avdtp_service_cap_new(AVDTP_MEDIA_CODEC, &sbc_cap,
1523 sizeof(sbc_cap));
1524
1525 print_sbc(&sbc_cap);
1526 } else
1527 return -EINVAL;
1528
1529 client->caps = g_slist_append(client->caps, media_codec);
1530
1531 return 0;
1532 }
1533
handle_setconfiguration_req(struct unix_client * client,struct bt_set_configuration_req * req)1534 static void handle_setconfiguration_req(struct unix_client *client,
1535 struct bt_set_configuration_req *req)
1536 {
1537 int err = 0;
1538
1539 if (req->codec.seid != client->seid) {
1540 error("Unable to set configuration: seid %d not opened",
1541 req->codec.seid);
1542 goto failed;
1543 }
1544
1545 if (!client->dev)
1546 goto failed;
1547
1548 if (req->codec.transport == BT_CAPABILITIES_TRANSPORT_SCO) {
1549 err = handle_sco_transport(client, req);
1550 if (err < 0) {
1551 err = -err;
1552 goto failed;
1553 }
1554 } else if (req->codec.transport == BT_CAPABILITIES_TRANSPORT_A2DP) {
1555 err = handle_a2dp_transport(client, req);
1556 if (err < 0) {
1557 err = -err;
1558 goto failed;
1559 }
1560 }
1561
1562 start_config(client->dev, client);
1563
1564 return;
1565
1566 failed:
1567 unix_ipc_error(client, BT_SET_CONFIGURATION, err ? : EIO);
1568 }
1569
handle_streamstart_req(struct unix_client * client,struct bt_start_stream_req * req)1570 static void handle_streamstart_req(struct unix_client *client,
1571 struct bt_start_stream_req *req)
1572 {
1573 if (!client->dev)
1574 goto failed;
1575
1576 start_resume(client->dev, client);
1577
1578 return;
1579
1580 failed:
1581 unix_ipc_error(client, BT_START_STREAM, EIO);
1582 }
1583
handle_streamstop_req(struct unix_client * client,struct bt_stop_stream_req * req)1584 static void handle_streamstop_req(struct unix_client *client,
1585 struct bt_stop_stream_req *req)
1586 {
1587 if (!client->dev)
1588 goto failed;
1589
1590 start_suspend(client->dev, client);
1591
1592 return;
1593
1594 failed:
1595 unix_ipc_error(client, BT_STOP_STREAM, EIO);
1596 }
1597
handle_close_req(struct unix_client * client,struct bt_close_req * req)1598 static void handle_close_req(struct unix_client *client,
1599 struct bt_close_req *req)
1600 {
1601 if (!client->dev)
1602 goto failed;
1603
1604 start_close(client->dev, client, TRUE);
1605
1606 return;
1607
1608 failed:
1609 unix_ipc_error(client, BT_CLOSE, EIO);
1610 }
1611
handle_control_req(struct unix_client * client,struct bt_control_req * req)1612 static void handle_control_req(struct unix_client *client,
1613 struct bt_control_req *req)
1614 {
1615 /* FIXME: really implement that */
1616 char buf[BT_SUGGESTED_BUFFER_SIZE];
1617 struct bt_set_configuration_rsp *rsp = (void *) buf;
1618
1619 memset(buf, 0, sizeof(buf));
1620 rsp->h.type = BT_RESPONSE;
1621 rsp->h.name = BT_CONTROL;
1622 rsp->h.length = sizeof(*rsp);
1623
1624 unix_ipc_sendmsg(client, &rsp->h);
1625 }
1626
handle_delay_report_req(struct unix_client * client,struct bt_delay_report_req * req)1627 static void handle_delay_report_req(struct unix_client *client,
1628 struct bt_delay_report_req *req)
1629 {
1630 char buf[BT_SUGGESTED_BUFFER_SIZE];
1631 struct bt_set_configuration_rsp *rsp = (void *) buf;
1632 struct a2dp_data *a2dp;
1633 int err;
1634
1635 if (!client->dev) {
1636 err = -ENODEV;
1637 goto failed;
1638 }
1639
1640 switch (client->type) {
1641 case TYPE_HEADSET:
1642 case TYPE_GATEWAY:
1643 err = -EINVAL;
1644 goto failed;
1645 case TYPE_SOURCE:
1646 case TYPE_SINK:
1647 a2dp = &client->d.a2dp;
1648 if (a2dp->session && a2dp->stream) {
1649 err = avdtp_delay_report(a2dp->session, a2dp->stream,
1650 req->delay);
1651 if (err < 0)
1652 goto failed;
1653 } else {
1654 err = -EINVAL;
1655 goto failed;
1656 }
1657 break;
1658 default:
1659 error("No known services for device");
1660 err = -EINVAL;
1661 goto failed;
1662 }
1663
1664 memset(buf, 0, sizeof(buf));
1665 rsp->h.type = BT_RESPONSE;
1666 rsp->h.name = BT_DELAY_REPORT;
1667 rsp->h.length = sizeof(*rsp);
1668
1669 unix_ipc_sendmsg(client, &rsp->h);
1670
1671 return;
1672
1673 failed:
1674 unix_ipc_error(client, BT_DELAY_REPORT, -err);
1675 }
1676
client_cb(GIOChannel * chan,GIOCondition cond,gpointer data)1677 static gboolean client_cb(GIOChannel *chan, GIOCondition cond, gpointer data)
1678 {
1679 char buf[BT_SUGGESTED_BUFFER_SIZE];
1680 bt_audio_msg_header_t *msghdr = (void *) buf;
1681 struct unix_client *client = data;
1682 int len;
1683 const char *type, *name;
1684
1685 if (cond & G_IO_NVAL)
1686 return FALSE;
1687
1688 if (cond & (G_IO_HUP | G_IO_ERR)) {
1689 DBG("Unix client disconnected (fd=%d)", client->sock);
1690
1691 goto failed;
1692 }
1693
1694 memset(buf, 0, sizeof(buf));
1695
1696 len = recv(client->sock, buf, sizeof(buf), 0);
1697 if (len < 0) {
1698 error("recv: %s (%d)", strerror(errno), errno);
1699 goto failed;
1700 }
1701
1702 type = bt_audio_strtype(msghdr->type);
1703 name = bt_audio_strname(msghdr->name);
1704
1705 DBG("Audio API: %s <- %s", type, name);
1706
1707 if (msghdr->length != len) {
1708 error("Invalid message: length mismatch");
1709 goto failed;
1710 }
1711
1712 switch (msghdr->name) {
1713 case BT_GET_CAPABILITIES:
1714 handle_getcapabilities_req(client,
1715 (struct bt_get_capabilities_req *) msghdr);
1716 break;
1717 case BT_OPEN:
1718 handle_open_req(client,
1719 (struct bt_open_req *) msghdr);
1720 break;
1721 case BT_SET_CONFIGURATION:
1722 handle_setconfiguration_req(client,
1723 (struct bt_set_configuration_req *) msghdr);
1724 break;
1725 case BT_START_STREAM:
1726 handle_streamstart_req(client,
1727 (struct bt_start_stream_req *) msghdr);
1728 break;
1729 case BT_STOP_STREAM:
1730 handle_streamstop_req(client,
1731 (struct bt_stop_stream_req *) msghdr);
1732 break;
1733 case BT_CLOSE:
1734 handle_close_req(client,
1735 (struct bt_close_req *) msghdr);
1736 break;
1737 case BT_CONTROL:
1738 handle_control_req(client,
1739 (struct bt_control_req *) msghdr);
1740 break;
1741 case BT_DELAY_REPORT:
1742 handle_delay_report_req(client,
1743 (struct bt_delay_report_req *) msghdr);
1744 break;
1745 default:
1746 error("Audio API: received unexpected message name %d",
1747 msghdr->name);
1748 }
1749
1750 return TRUE;
1751
1752 failed:
1753 clients = g_slist_remove(clients, client);
1754 start_close(client->dev, client, FALSE);
1755 client_free(client);
1756 return FALSE;
1757 }
1758
server_cb(GIOChannel * chan,GIOCondition cond,gpointer data)1759 static gboolean server_cb(GIOChannel *chan, GIOCondition cond, gpointer data)
1760 {
1761 struct sockaddr_un addr;
1762 socklen_t addrlen;
1763 int sk, cli_sk;
1764 struct unix_client *client;
1765 GIOChannel *io;
1766
1767 if (cond & G_IO_NVAL)
1768 return FALSE;
1769
1770 if (cond & (G_IO_HUP | G_IO_ERR)) {
1771 g_io_channel_close(chan);
1772 return FALSE;
1773 }
1774
1775 sk = g_io_channel_unix_get_fd(chan);
1776
1777 memset(&addr, 0, sizeof(addr));
1778 addrlen = sizeof(addr);
1779
1780 cli_sk = accept(sk, (struct sockaddr *) &addr, &addrlen);
1781 if (cli_sk < 0) {
1782 error("accept: %s (%d)", strerror(errno), errno);
1783 return TRUE;
1784 }
1785
1786 DBG("Accepted new client connection on unix socket (fd=%d)", cli_sk);
1787 set_nonblocking(cli_sk);
1788
1789 client = g_new0(struct unix_client, 1);
1790 client->sock = cli_sk;
1791 clients = g_slist_append(clients, client);
1792
1793 io = g_io_channel_unix_new(cli_sk);
1794 g_io_add_watch(io, G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
1795 client_cb, client);
1796 g_io_channel_unref(io);
1797
1798 return TRUE;
1799 }
1800
unix_device_removed(struct audio_device * dev)1801 void unix_device_removed(struct audio_device *dev)
1802 {
1803 GSList *l;
1804
1805 DBG("unix_device_removed(%p)", dev);
1806
1807 l = clients;
1808 while (l) {
1809 struct unix_client *client = l->data;
1810
1811 l = l->next;
1812
1813 if (client->dev == dev) {
1814 clients = g_slist_remove(clients, client);
1815 start_close(client->dev, client, FALSE);
1816 client_free(client);
1817 }
1818 }
1819 }
1820
unix_delay_report(struct audio_device * dev,uint8_t seid,uint16_t delay)1821 void unix_delay_report(struct audio_device *dev, uint8_t seid, uint16_t delay)
1822 {
1823 GSList *l;
1824 struct bt_delay_report_ind ind;
1825
1826 DBG("unix_delay_report(%p): %u.%ums", dev, delay / 10, delay % 10);
1827
1828 memset(&ind, 0, sizeof(ind));
1829 ind.h.type = BT_INDICATION;
1830 ind.h.name = BT_DELAY_REPORT;
1831 ind.h.length = sizeof(ind);
1832 ind.delay = delay;
1833
1834 for (l = clients; l != NULL; l = g_slist_next(l)) {
1835 struct unix_client *client = l->data;
1836
1837 if (client->dev != dev || client->seid != seid)
1838 continue;
1839
1840 unix_ipc_sendmsg(client, (void *) &ind);
1841 }
1842 }
1843
unix_init(void)1844 int unix_init(void)
1845 {
1846 GIOChannel *io;
1847 struct sockaddr_un addr = {
1848 AF_UNIX, BT_IPC_SOCKET_NAME
1849 };
1850
1851 int sk, err;
1852
1853 sk = socket(PF_LOCAL, SOCK_STREAM, 0);
1854 if (sk < 0) {
1855 err = errno;
1856 error("Can't create unix socket: %s (%d)", strerror(err), err);
1857 return -err;
1858 }
1859
1860 if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
1861 error("Can't bind unix socket: %s (%d)", strerror(errno),
1862 errno);
1863 close(sk);
1864 return -1;
1865 }
1866
1867 set_nonblocking(sk);
1868
1869 if (listen(sk, 1) < 0) {
1870 error("Can't listen on unix socket: %s (%d)",
1871 strerror(errno), errno);
1872 close(sk);
1873 return -1;
1874 }
1875
1876 unix_sock = sk;
1877
1878 io = g_io_channel_unix_new(sk);
1879 g_io_add_watch(io, G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
1880 server_cb, NULL);
1881 g_io_channel_unref(io);
1882
1883 DBG("Unix socket created: %d", sk);
1884
1885 return 0;
1886 }
1887
unix_exit(void)1888 void unix_exit(void)
1889 {
1890 g_slist_foreach(clients, (GFunc) client_free, NULL);
1891 g_slist_free(clients);
1892 if (unix_sock >= 0) {
1893 close(unix_sock);
1894 unix_sock = -1;
1895 }
1896 }
1897