1 /*
2 *
3 * BlueZ - Bluetooth protocol stack for Linux
4 *
5 * Copyright (C) 2006-2007 Nokia Corporation
6 * Copyright (C) 2004-2009 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 "logging.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 debug("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 debug("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 unix_ipc_sendmsg(client, &rsp->h);
172 }
173
select_service(struct audio_device * dev,const char * interface)174 static service_type_t select_service(struct audio_device *dev, const char *interface)
175 {
176 if (!interface) {
177 if (dev->sink && avdtp_is_connected(&dev->src, &dev->dst))
178 return TYPE_SINK;
179 else if (dev->headset && headset_is_active(dev))
180 return TYPE_HEADSET;
181 else if (dev->sink)
182 return TYPE_SINK;
183 else if (dev->headset)
184 return TYPE_HEADSET;
185 } else if (!strcmp(interface, AUDIO_SINK_INTERFACE) && dev->sink)
186 return TYPE_SINK;
187 else if (!strcmp(interface, AUDIO_HEADSET_INTERFACE) && dev->headset)
188 return TYPE_HEADSET;
189 else if (!strcmp(interface, AUDIO_GATEWAY_INTERFACE) && dev->gateway)
190 return TYPE_GATEWAY;
191
192 return TYPE_NONE;
193 }
194
stream_state_changed(struct avdtp_stream * stream,avdtp_state_t old_state,avdtp_state_t new_state,struct avdtp_error * err,void * user_data)195 static void stream_state_changed(struct avdtp_stream *stream,
196 avdtp_state_t old_state,
197 avdtp_state_t new_state,
198 struct avdtp_error *err,
199 void *user_data)
200 {
201 struct unix_client *client = user_data;
202 struct a2dp_data *a2dp = &client->d.a2dp;
203
204 switch (new_state) {
205 case AVDTP_STATE_IDLE:
206 if (a2dp->sep) {
207 a2dp_sep_unlock(a2dp->sep, a2dp->session);
208 a2dp->sep = NULL;
209 }
210 if (a2dp->session) {
211 avdtp_unref(a2dp->session);
212 a2dp->session = NULL;
213 }
214 a2dp->stream = NULL;
215 client->cb_id = 0;
216 break;
217 default:
218 break;
219 }
220 }
221
headset_generate_capability(struct audio_device * dev,codec_capabilities_t * codec)222 static uint8_t headset_generate_capability(struct audio_device *dev,
223 codec_capabilities_t *codec)
224 {
225 pcm_capabilities_t *pcm;
226
227 codec->seid = BT_A2DP_SEID_RANGE + 1;
228 codec->transport = BT_CAPABILITIES_TRANSPORT_SCO;
229 codec->type = BT_HFP_CODEC_PCM;
230 codec->length = sizeof(*pcm);
231
232 pcm = (void *) codec;
233 pcm->sampling_rate = 8000;
234 if (dev->headset) {
235 if (headset_get_nrec(dev))
236 pcm->flags |= BT_PCM_FLAG_NREC;
237 if (!headset_get_sco_hci(dev))
238 pcm->flags |= BT_PCM_FLAG_PCM_ROUTING;
239 codec->configured = headset_is_active(dev);
240 codec->lock = headset_get_lock(dev);
241 } else {
242 pcm->flags |= BT_PCM_FLAG_NREC;
243 codec->configured = TRUE;
244 codec->lock = 0;
245 }
246
247 return codec->length;
248 }
249
headset_discovery_complete(struct audio_device * dev,void * user_data)250 static void headset_discovery_complete(struct audio_device *dev, void *user_data)
251 {
252 struct unix_client *client = user_data;
253 char buf[BT_SUGGESTED_BUFFER_SIZE];
254 struct bt_get_capabilities_rsp *rsp = (void *) buf;
255 uint8_t length;
256
257 client->req_id = 0;
258
259 if (!dev)
260 goto failed;
261
262 memset(buf, 0, sizeof(buf));
263
264 length = headset_generate_capability(dev, (void *) rsp->data);
265
266 rsp->h.type = BT_RESPONSE;
267 rsp->h.name = BT_GET_CAPABILITIES;
268 rsp->h.length = sizeof(*rsp) + length;
269
270 ba2str(&dev->src, rsp->source);
271 ba2str(&dev->dst, rsp->destination);
272 strncpy(rsp->object, dev->path, sizeof(rsp->object));
273
274 unix_ipc_sendmsg(client, &rsp->h);
275
276 return;
277
278 failed:
279 error("discovery failed");
280 unix_ipc_error(client, BT_SET_CONFIGURATION, EIO);
281 }
282
headset_setup_complete(struct audio_device * dev,void * user_data)283 static void headset_setup_complete(struct audio_device *dev, void *user_data)
284 {
285 struct unix_client *client = user_data;
286 char buf[BT_SUGGESTED_BUFFER_SIZE];
287 struct bt_set_configuration_rsp *rsp = (void *) buf;
288
289 client->req_id = 0;
290
291 if (!dev)
292 goto failed;
293
294 memset(buf, 0, sizeof(buf));
295
296 rsp->h.type = BT_RESPONSE;
297 rsp->h.name = BT_SET_CONFIGURATION;
298 rsp->h.length = sizeof(*rsp);
299
300 rsp->link_mtu = 48;
301
302 client->data_fd = headset_get_sco_fd(dev);
303
304 unix_ipc_sendmsg(client, &rsp->h);
305
306 return;
307
308 failed:
309 error("config failed");
310 unix_ipc_error(client, BT_SET_CONFIGURATION, EIO);
311 }
312
gateway_setup_complete(struct audio_device * dev,void * user_data)313 static void gateway_setup_complete(struct audio_device *dev, void *user_data)
314 {
315 struct unix_client *client = user_data;
316 char buf[BT_SUGGESTED_BUFFER_SIZE];
317 struct bt_set_configuration_rsp *rsp = (void *) buf;
318
319 if (!dev) {
320 unix_ipc_error(client, BT_SET_CONFIGURATION, EIO);
321 return;
322 }
323
324 client->req_id = 0;
325
326 memset(buf, 0, sizeof(buf));
327
328 rsp->h.type = BT_RESPONSE;
329 rsp->h.name = BT_SET_CONFIGURATION;
330 rsp->h.length = sizeof(*rsp);
331
332 rsp->link_mtu = 48;
333
334 client->data_fd = gateway_get_sco_fd(dev);
335
336 unix_ipc_sendmsg(client, &rsp->h);
337 }
338
headset_resume_complete(struct audio_device * dev,void * user_data)339 static void headset_resume_complete(struct audio_device *dev, void *user_data)
340 {
341 struct unix_client *client = user_data;
342 char buf[BT_SUGGESTED_BUFFER_SIZE];
343 struct bt_start_stream_rsp *rsp = (void *) buf;
344 struct bt_new_stream_ind *ind = (void *) buf;
345
346 client->req_id = 0;
347
348 if (!dev)
349 goto failed;
350
351 client->data_fd = headset_get_sco_fd(dev);
352 if (client->data_fd < 0) {
353 error("Unable to get a SCO fd");
354 goto failed;
355 }
356
357 memset(buf, 0, sizeof(buf));
358 rsp->h.type = BT_RESPONSE;
359 rsp->h.name = BT_START_STREAM;
360 rsp->h.length = sizeof(*rsp);
361
362 unix_ipc_sendmsg(client, &rsp->h);
363
364 memset(buf, 0, sizeof(buf));
365 ind->h.type = BT_INDICATION;
366 ind->h.name = BT_NEW_STREAM;
367 ind->h.length = sizeof(*ind);
368
369 unix_ipc_sendmsg(client, &ind->h);
370
371 if (unix_sendmsg_fd(client->sock, client->data_fd) < 0) {
372 error("unix_sendmsg_fd: %s(%d)", strerror(errno), errno);
373 goto failed;
374 }
375
376 return;
377
378 failed:
379 error("headset_resume_complete: resume failed");
380 unix_ipc_error(client, BT_START_STREAM, EIO);
381 }
382
gateway_resume_complete(struct audio_device * dev,void * user_data)383 static void gateway_resume_complete(struct audio_device *dev, void *user_data)
384 {
385 struct unix_client *client = user_data;
386 char buf[BT_SUGGESTED_BUFFER_SIZE];
387 struct bt_start_stream_rsp *rsp = (void *) buf;
388 struct bt_new_stream_ind *ind = (void *) buf;
389
390 memset(buf, 0, sizeof(buf));
391 rsp->h.type = BT_RESPONSE;
392 rsp->h.name = BT_START_STREAM;
393 rsp->h.length = sizeof(*rsp);
394
395 unix_ipc_sendmsg(client, &rsp->h);
396
397 memset(buf, 0, sizeof(buf));
398 ind->h.type = BT_INDICATION;
399 ind->h.name = BT_NEW_STREAM;
400 ind->h.length = sizeof(*ind);
401
402 unix_ipc_sendmsg(client, &ind->h);
403
404 client->data_fd = gateway_get_sco_fd(dev);
405 if (unix_sendmsg_fd(client->sock, client->data_fd) < 0) {
406 error("unix_sendmsg_fd: %s(%d)", strerror(errno), errno);
407 unix_ipc_error(client, BT_START_STREAM, EIO);
408 }
409
410 client->req_id = 0;
411 }
412
headset_suspend_complete(struct audio_device * dev,void * user_data)413 static void headset_suspend_complete(struct audio_device *dev, void *user_data)
414 {
415 struct unix_client *client = user_data;
416 char buf[BT_SUGGESTED_BUFFER_SIZE];
417 struct bt_stop_stream_rsp *rsp = (void *) buf;
418
419 if (!dev)
420 goto failed;
421
422 memset(buf, 0, sizeof(buf));
423 rsp->h.type = BT_RESPONSE;
424 rsp->h.name = BT_STOP_STREAM;
425 rsp->h.length = sizeof(*rsp);
426
427 unix_ipc_sendmsg(client, &rsp->h);
428
429 return;
430
431 failed:
432 error("suspend failed");
433 unix_ipc_error(client, BT_STOP_STREAM, EIO);
434 }
435
print_mpeg12(struct mpeg_codec_cap * mpeg)436 static void print_mpeg12(struct mpeg_codec_cap *mpeg)
437 {
438 debug("Media Codec: MPEG12"
439 " Channel Modes: %s%s%s%s"
440 " Frequencies: %s%s%s%s%s%s"
441 " Layers: %s%s%s"
442 " CRC: %s",
443 mpeg->channel_mode & MPEG_CHANNEL_MODE_MONO ? "Mono " : "",
444 mpeg->channel_mode & MPEG_CHANNEL_MODE_DUAL_CHANNEL ?
445 "DualChannel " : "",
446 mpeg->channel_mode & MPEG_CHANNEL_MODE_STEREO ? "Stereo " : "",
447 mpeg->channel_mode & MPEG_CHANNEL_MODE_JOINT_STEREO ?
448 "JointStereo " : "",
449 mpeg->frequency & MPEG_SAMPLING_FREQ_16000 ? "16Khz " : "",
450 mpeg->frequency & MPEG_SAMPLING_FREQ_22050 ? "22.05Khz " : "",
451 mpeg->frequency & MPEG_SAMPLING_FREQ_24000 ? "24Khz " : "",
452 mpeg->frequency & MPEG_SAMPLING_FREQ_32000 ? "32Khz " : "",
453 mpeg->frequency & MPEG_SAMPLING_FREQ_44100 ? "44.1Khz " : "",
454 mpeg->frequency & MPEG_SAMPLING_FREQ_48000 ? "48Khz " : "",
455 mpeg->layer & MPEG_LAYER_MP1 ? "1 " : "",
456 mpeg->layer & MPEG_LAYER_MP2 ? "2 " : "",
457 mpeg->layer & MPEG_LAYER_MP3 ? "3 " : "",
458 mpeg->crc ? "Yes" : "No");
459 }
460
print_sbc(struct sbc_codec_cap * sbc)461 static void print_sbc(struct sbc_codec_cap *sbc)
462 {
463 debug("Media Codec: SBC"
464 " Channel Modes: %s%s%s%s"
465 " Frequencies: %s%s%s%s"
466 " Subbands: %s%s"
467 " Blocks: %s%s%s%s"
468 " Bitpool: %d-%d",
469 sbc->channel_mode & SBC_CHANNEL_MODE_MONO ? "Mono " : "",
470 sbc->channel_mode & SBC_CHANNEL_MODE_DUAL_CHANNEL ?
471 "DualChannel " : "",
472 sbc->channel_mode & SBC_CHANNEL_MODE_STEREO ? "Stereo " : "",
473 sbc->channel_mode & SBC_CHANNEL_MODE_JOINT_STEREO ? "JointStereo" : "",
474 sbc->frequency & SBC_SAMPLING_FREQ_16000 ? "16Khz " : "",
475 sbc->frequency & SBC_SAMPLING_FREQ_32000 ? "32Khz " : "",
476 sbc->frequency & SBC_SAMPLING_FREQ_44100 ? "44.1Khz " : "",
477 sbc->frequency & SBC_SAMPLING_FREQ_48000 ? "48Khz " : "",
478 sbc->subbands & SBC_SUBBANDS_4 ? "4 " : "",
479 sbc->subbands & SBC_SUBBANDS_8 ? "8 " : "",
480 sbc->block_length & SBC_BLOCK_LENGTH_4 ? "4 " : "",
481 sbc->block_length & SBC_BLOCK_LENGTH_8 ? "8 " : "",
482 sbc->block_length & SBC_BLOCK_LENGTH_12 ? "12 " : "",
483 sbc->block_length & SBC_BLOCK_LENGTH_16 ? "16 " : "",
484 sbc->min_bitpool, sbc->max_bitpool);
485 }
486
a2dp_append_codec(struct bt_get_capabilities_rsp * rsp,struct avdtp_service_capability * cap,uint8_t seid,uint8_t configured,uint8_t lock)487 static int a2dp_append_codec(struct bt_get_capabilities_rsp *rsp,
488 struct avdtp_service_capability *cap,
489 uint8_t seid,
490 uint8_t configured,
491 uint8_t lock)
492 {
493 struct avdtp_media_codec_capability *codec_cap = (void *) cap->data;
494 codec_capabilities_t *codec = (void *) rsp + rsp->h.length;
495 size_t space_left;
496
497 if (rsp->h.length > BT_SUGGESTED_BUFFER_SIZE)
498 return -ENOMEM;
499
500 space_left = BT_SUGGESTED_BUFFER_SIZE - rsp->h.length;
501
502 /* endianess prevent direct cast */
503 if (codec_cap->media_codec_type == A2DP_CODEC_SBC) {
504 struct sbc_codec_cap *sbc_cap = (void *) codec_cap;
505 sbc_capabilities_t *sbc = (void *) codec;
506
507 if (space_left < sizeof(sbc_capabilities_t))
508 return -ENOMEM;
509
510 codec->length = sizeof(sbc_capabilities_t);
511
512 sbc->channel_mode = sbc_cap->channel_mode;
513 sbc->frequency = sbc_cap->frequency;
514 sbc->allocation_method = sbc_cap->allocation_method;
515 sbc->subbands = sbc_cap->subbands;
516 sbc->block_length = sbc_cap->block_length;
517 sbc->min_bitpool = sbc_cap->min_bitpool;
518 sbc->max_bitpool = sbc_cap->max_bitpool;
519
520 print_sbc(sbc_cap);
521 codec->type = BT_A2DP_SBC_SINK;
522 } else if (codec_cap->media_codec_type == A2DP_CODEC_MPEG12) {
523 struct mpeg_codec_cap *mpeg_cap = (void *) codec_cap;
524 mpeg_capabilities_t *mpeg = (void *) codec;
525
526 if (space_left < sizeof(mpeg_capabilities_t))
527 return -ENOMEM;
528
529 codec->length = sizeof(mpeg_capabilities_t);
530
531 mpeg->channel_mode = mpeg_cap->channel_mode;
532 mpeg->crc = mpeg_cap->crc;
533 mpeg->layer = mpeg_cap->layer;
534 mpeg->frequency = mpeg_cap->frequency;
535 mpeg->mpf = mpeg_cap->mpf;
536 mpeg->bitrate = mpeg_cap->bitrate;
537
538 print_mpeg12(mpeg_cap);
539 codec->type = BT_A2DP_MPEG12_SINK;
540 } else {
541 size_t codec_length, type_length, total_length;
542
543 codec_length = cap->length - (sizeof(struct avdtp_service_capability)
544 + sizeof(struct avdtp_media_codec_capability));
545 type_length = sizeof(codec_cap->media_codec_type);
546 total_length = type_length + codec_length +
547 sizeof(codec_capabilities_t);
548
549 if (space_left < total_length)
550 return -ENOMEM;
551
552 codec->length = total_length;
553 memcpy(codec->data, &codec_cap->media_codec_type, type_length);
554 memcpy(codec->data + type_length, codec_cap->data,
555 codec_length);
556 codec->type = BT_A2DP_UNKNOWN_SINK;
557 }
558
559 codec->seid = seid;
560 codec->configured = configured;
561 codec->lock = lock;
562 rsp->h.length += codec->length;
563
564 debug("Append %s seid %d - length %d - total %d",
565 configured ? "configured" : "", seid, codec->length,
566 rsp->h.length);
567
568 return 0;
569 }
570
a2dp_discovery_complete(struct avdtp * session,GSList * seps,struct avdtp_error * err,void * user_data)571 static void a2dp_discovery_complete(struct avdtp *session, GSList *seps,
572 struct avdtp_error *err,
573 void *user_data)
574 {
575 struct unix_client *client = user_data;
576 char buf[BT_SUGGESTED_BUFFER_SIZE];
577 struct bt_get_capabilities_rsp *rsp = (void *) buf;
578 struct a2dp_data *a2dp = &client->d.a2dp;
579 GSList *l;
580
581 if (!g_slist_find(clients, client)) {
582 debug("Client disconnected during discovery");
583 return;
584 }
585
586 if (err)
587 goto failed;
588
589 memset(buf, 0, sizeof(buf));
590 client->req_id = 0;
591
592 rsp->h.type = BT_RESPONSE;
593 rsp->h.name = BT_GET_CAPABILITIES;
594 rsp->h.length = sizeof(*rsp);
595 ba2str(&client->dev->src, rsp->source);
596 ba2str(&client->dev->dst, rsp->destination);
597 strncpy(rsp->object, client->dev->path, sizeof(rsp->object));
598
599 for (l = seps; l; l = g_slist_next(l)) {
600 struct avdtp_remote_sep *rsep = l->data;
601 struct a2dp_sep *sep;
602 struct avdtp_service_capability *cap;
603 struct avdtp_stream *stream;
604 uint8_t type, seid, configured = 0, lock = 0;
605 GSList *cl;
606
607 type = avdtp_get_type(rsep);
608
609 if (type != AVDTP_SEP_TYPE_SINK)
610 continue;
611
612 cap = avdtp_get_codec(rsep);
613
614 if (cap->category != AVDTP_MEDIA_CODEC)
615 continue;
616
617 seid = avdtp_get_seid(rsep);
618
619 if (client->seid != 0 && client->seid != seid)
620 continue;
621
622 stream = avdtp_get_stream(rsep);
623 if (stream) {
624 configured = 1;
625 if (client->seid == seid)
626 cap = avdtp_stream_get_codec(stream);
627 }
628
629 for (cl = clients; cl; cl = cl->next) {
630 struct unix_client *c = cl->data;
631 struct a2dp_data *ca2dp = &c->d.a2dp;
632
633 if (ca2dp && ca2dp->session == session &&
634 c->seid == seid) {
635 lock = c->lock;
636 break;
637 }
638 }
639
640 sep = a2dp_get_sep(session, stream);
641 if (sep && a2dp_sep_get_lock(sep))
642 lock = BT_WRITE_LOCK;
643
644 a2dp_append_codec(rsp, cap, seid, configured, lock);
645 }
646
647 unix_ipc_sendmsg(client, &rsp->h);
648
649 return;
650
651 failed:
652 error("discovery failed");
653 unix_ipc_error(client, BT_GET_CAPABILITIES, EIO);
654
655 if (a2dp->sep) {
656 a2dp_sep_unlock(a2dp->sep, a2dp->session);
657 a2dp->sep = NULL;
658 }
659
660 avdtp_unref(a2dp->session);
661 a2dp->session = NULL;
662 a2dp->stream = NULL;
663 }
664
a2dp_config_complete(struct avdtp * session,struct a2dp_sep * sep,struct avdtp_stream * stream,struct avdtp_error * err,void * user_data)665 static void a2dp_config_complete(struct avdtp *session, struct a2dp_sep *sep,
666 struct avdtp_stream *stream,
667 struct avdtp_error *err,
668 void *user_data)
669 {
670 struct unix_client *client = user_data;
671 char buf[BT_SUGGESTED_BUFFER_SIZE];
672 struct bt_set_configuration_rsp *rsp = (void *) buf;
673 struct a2dp_data *a2dp = &client->d.a2dp;
674 uint16_t imtu, omtu;
675 GSList *caps;
676
677 client->req_id = 0;
678
679 if (err)
680 goto failed;
681
682 memset(buf, 0, sizeof(buf));
683
684 if (!stream)
685 goto failed;
686
687 if (client->cb_id > 0)
688 avdtp_stream_remove_cb(a2dp->session, a2dp->stream,
689 client->cb_id);
690
691 a2dp->sep = sep;
692 a2dp->stream = stream;
693
694 if (!avdtp_stream_get_transport(stream, &client->data_fd, &imtu, &omtu,
695 &caps)) {
696 error("Unable to get stream transport");
697 goto failed;
698 }
699
700 rsp->h.type = BT_RESPONSE;
701 rsp->h.name = BT_SET_CONFIGURATION;
702 rsp->h.length = sizeof(*rsp);
703
704 /* FIXME: Use imtu when fd_opt is CFG_FD_OPT_READ */
705 rsp->link_mtu = omtu;
706
707 unix_ipc_sendmsg(client, &rsp->h);
708
709 client->cb_id = avdtp_stream_add_cb(session, stream,
710 stream_state_changed, client);
711
712 return;
713
714 failed:
715 error("config failed");
716
717 unix_ipc_error(client, BT_SET_CONFIGURATION, EIO);
718
719 avdtp_unref(a2dp->session);
720
721 a2dp->session = NULL;
722 a2dp->stream = NULL;
723 a2dp->sep = NULL;
724 }
725
a2dp_resume_complete(struct avdtp * session,struct avdtp_error * err,void * user_data)726 static void a2dp_resume_complete(struct avdtp *session,
727 struct avdtp_error *err, void *user_data)
728 {
729 struct unix_client *client = user_data;
730 char buf[BT_SUGGESTED_BUFFER_SIZE];
731 struct bt_start_stream_rsp *rsp = (void *) buf;
732 struct bt_new_stream_ind *ind = (void *) buf;
733 struct a2dp_data *a2dp = &client->d.a2dp;
734
735 if (err)
736 goto failed;
737
738 memset(buf, 0, sizeof(buf));
739 rsp->h.type = BT_RESPONSE;
740 rsp->h.name = BT_START_STREAM;
741 rsp->h.length = sizeof(*rsp);
742
743 unix_ipc_sendmsg(client, &rsp->h);
744
745 memset(buf, 0, sizeof(buf));
746 ind->h.type = BT_RESPONSE;
747 ind->h.name = BT_NEW_STREAM;
748 rsp->h.length = sizeof(*ind);
749
750 unix_ipc_sendmsg(client, &ind->h);
751
752 if (unix_sendmsg_fd(client->sock, client->data_fd) < 0) {
753 error("unix_sendmsg_fd: %s(%d)", strerror(errno), errno);
754 goto failed;
755 }
756
757 return;
758
759 failed:
760 error("resume failed");
761
762 unix_ipc_error(client, BT_START_STREAM, EIO);
763
764 if (client->cb_id > 0) {
765 avdtp_stream_remove_cb(a2dp->session, a2dp->stream,
766 client->cb_id);
767 client->cb_id = 0;
768 }
769
770 if (a2dp->sep) {
771 a2dp_sep_unlock(a2dp->sep, a2dp->session);
772 a2dp->sep = NULL;
773 }
774
775 avdtp_unref(a2dp->session);
776 a2dp->session = NULL;
777 a2dp->stream = NULL;
778 }
779
a2dp_suspend_complete(struct avdtp * session,struct avdtp_error * err,void * user_data)780 static void a2dp_suspend_complete(struct avdtp *session,
781 struct avdtp_error *err, void *user_data)
782 {
783 struct unix_client *client = user_data;
784 char buf[BT_SUGGESTED_BUFFER_SIZE];
785 struct bt_stop_stream_rsp *rsp = (void *) buf;
786 struct a2dp_data *a2dp = &client->d.a2dp;
787
788 if (err)
789 goto failed;
790
791 memset(buf, 0, sizeof(buf));
792 rsp->h.type = BT_RESPONSE;
793 rsp->h.name = BT_STOP_STREAM;
794 rsp->h.length = sizeof(*rsp);
795
796 unix_ipc_sendmsg(client, &rsp->h);
797
798 return;
799
800 failed:
801 error("suspend failed");
802
803 unix_ipc_error(client, BT_STOP_STREAM, EIO);
804
805 if (a2dp->sep) {
806 a2dp_sep_unlock(a2dp->sep, a2dp->session);
807 a2dp->sep = NULL;
808 }
809
810 avdtp_unref(a2dp->session);
811 a2dp->session = NULL;
812 a2dp->stream = NULL;
813 }
814
start_discovery(struct audio_device * dev,struct unix_client * client)815 static void start_discovery(struct audio_device *dev, struct unix_client *client)
816 {
817 struct a2dp_data *a2dp;
818 int err = 0;
819
820 switch (client->type) {
821 case TYPE_SINK:
822 a2dp = &client->d.a2dp;
823
824 if (!a2dp->session)
825 a2dp->session = avdtp_get(&dev->src, &dev->dst);
826
827 if (!a2dp->session) {
828 error("Unable to get a session");
829 goto failed;
830 }
831
832 err = avdtp_discover(a2dp->session, a2dp_discovery_complete,
833 client);
834 if (err) {
835 if (a2dp->session) {
836 avdtp_unref(a2dp->session);
837 a2dp->session = NULL;
838 }
839 goto failed;
840 }
841 break;
842
843 case TYPE_HEADSET:
844 case TYPE_GATEWAY:
845 headset_discovery_complete(dev, client);
846 break;
847
848 default:
849 error("No known services for device");
850 goto failed;
851 }
852
853 client->dev = dev;
854
855 return;
856
857 failed:
858 unix_ipc_error(client, BT_GET_CAPABILITIES, err ? : EIO);
859 }
860
open_complete(struct audio_device * dev,void * user_data)861 static void open_complete(struct audio_device *dev, void *user_data)
862 {
863 struct unix_client *client = user_data;
864 char buf[BT_SUGGESTED_BUFFER_SIZE];
865 struct bt_open_rsp *rsp = (void *) buf;
866
867 memset(buf, 0, sizeof(buf));
868
869 rsp->h.type = BT_RESPONSE;
870 rsp->h.name = BT_OPEN;
871 rsp->h.length = sizeof(*rsp);
872
873 ba2str(&dev->src, rsp->source);
874 ba2str(&dev->dst, rsp->destination);
875 strncpy(rsp->object, dev->path, sizeof(rsp->object));
876
877 unix_ipc_sendmsg(client, &rsp->h);
878
879 return;
880 }
881
start_open(struct audio_device * dev,struct unix_client * client)882 static void start_open(struct audio_device *dev, struct unix_client *client)
883 {
884 struct a2dp_data *a2dp;
885 struct headset_data *hs;
886 struct avdtp_remote_sep *rsep;
887 gboolean unref_avdtp_on_fail = FALSE;
888
889 switch (client->type) {
890 case TYPE_SINK:
891 case TYPE_SOURCE:
892 a2dp = &client->d.a2dp;
893
894 if (!a2dp->session) {
895 a2dp->session = avdtp_get(&dev->src, &dev->dst);
896 unref_avdtp_on_fail = TRUE;
897 }
898
899 if (!a2dp->session) {
900 error("Unable to get a session");
901 goto failed;
902 }
903
904 if (a2dp->sep) {
905 error("Client already has an opened session");
906 goto failed;
907 }
908
909 rsep = avdtp_get_remote_sep(a2dp->session, client->seid);
910 if (!rsep) {
911 error("Invalid seid %d", client->seid);
912 goto failed;
913 }
914
915 a2dp->sep = a2dp_get(a2dp->session, rsep);
916 if (!a2dp->sep) {
917 error("seid %d not available or locked", client->seid);
918 goto failed;
919 }
920
921 if (!a2dp_sep_lock(a2dp->sep, a2dp->session)) {
922 error("Unable to open seid %d", client->seid);
923 a2dp->sep = NULL;
924 goto failed;
925 }
926
927 break;
928
929 case TYPE_HEADSET:
930 hs = &client->d.hs;
931
932 if (hs->locked) {
933 error("Client already has an opened session");
934 goto failed;
935 }
936
937 hs->locked = headset_lock(dev, client->lock);
938 if (!hs->locked) {
939 error("Unable to open seid %d", client->seid);
940 goto failed;
941 }
942 break;
943
944 case TYPE_GATEWAY:
945 break;
946 default:
947 error("No known services for device");
948 goto failed;
949 }
950
951 client->dev = dev;
952
953 open_complete(dev, client);
954
955 return;
956
957 failed:
958 if (unref_avdtp_on_fail && a2dp->session) {
959 avdtp_unref(a2dp->session);
960 a2dp->session = NULL;
961 }
962 unix_ipc_error(client, BT_OPEN, EINVAL);
963 }
964
start_config(struct audio_device * dev,struct unix_client * client)965 static void start_config(struct audio_device *dev, struct unix_client *client)
966 {
967 struct a2dp_data *a2dp;
968 struct headset_data *hs;
969 unsigned int id;
970
971 switch (client->type) {
972 case TYPE_SINK:
973 case TYPE_SOURCE:
974 a2dp = &client->d.a2dp;
975
976 if (!a2dp->session)
977 a2dp->session = avdtp_get(&dev->src, &dev->dst);
978
979 if (!a2dp->session) {
980 error("Unable to get a session");
981 goto failed;
982 }
983
984 if (!a2dp->sep) {
985 error("seid %d not opened", client->seid);
986 goto failed;
987 }
988
989 id = a2dp_config(a2dp->session, a2dp->sep, a2dp_config_complete,
990 client->caps, client);
991 client->cancel = a2dp_cancel;
992 break;
993
994 case TYPE_HEADSET:
995 hs = &client->d.hs;
996
997 if (!hs->locked) {
998 error("seid %d not opened", client->seid);
999 goto failed;
1000 }
1001
1002 id = headset_config_stream(dev, TRUE, headset_setup_complete,
1003 client);
1004 client->cancel = headset_cancel_stream;
1005 break;
1006 case TYPE_GATEWAY:
1007 if (gateway_config_stream(dev, gateway_setup_complete, client) >= 0) {
1008 client->cancel = gateway_cancel_stream;
1009 id = 1;
1010 } else
1011 id = 0;
1012 break;
1013
1014 default:
1015 error("No known services for device");
1016 goto failed;
1017 }
1018
1019 if (id == 0) {
1020 error("config failed");
1021 goto failed;
1022 }
1023
1024 client->req_id = id;
1025
1026 return;
1027
1028 failed:
1029 unix_ipc_error(client, BT_SET_CONFIGURATION, EIO);
1030 }
1031
start_resume(struct audio_device * dev,struct unix_client * client)1032 static void start_resume(struct audio_device *dev, struct unix_client *client)
1033 {
1034 struct a2dp_data *a2dp;
1035 struct headset_data *hs;
1036 unsigned int id;
1037 gboolean unref_avdtp_on_fail = FALSE;
1038
1039 switch (client->type) {
1040 case TYPE_SINK:
1041 case TYPE_SOURCE:
1042 a2dp = &client->d.a2dp;
1043
1044 if (!a2dp->session) {
1045 a2dp->session = avdtp_get(&dev->src, &dev->dst);
1046 unref_avdtp_on_fail = TRUE;
1047 }
1048
1049 if (!a2dp->session) {
1050 error("Unable to get a session");
1051 goto failed;
1052 }
1053
1054 if (!a2dp->sep) {
1055 error("seid not opened");
1056 goto failed;
1057 }
1058
1059 id = a2dp_resume(a2dp->session, a2dp->sep, a2dp_resume_complete,
1060 client);
1061 client->cancel = a2dp_cancel;
1062
1063 break;
1064
1065 case TYPE_HEADSET:
1066 hs = &client->d.hs;
1067
1068 if (!hs->locked) {
1069 error("seid not opened");
1070 goto failed;
1071 }
1072
1073 id = headset_request_stream(dev, headset_resume_complete,
1074 client);
1075 client->cancel = headset_cancel_stream;
1076 break;
1077
1078 case TYPE_GATEWAY:
1079 if (gateway_request_stream(dev, gateway_resume_complete, client))
1080 id = 1;
1081 else
1082 id = 0;
1083 client->cancel = gateway_cancel_stream;
1084 break;
1085
1086 default:
1087 error("No known services for device");
1088 goto failed;
1089 }
1090
1091 if (id == 0) {
1092 error("start_resume: resume failed");
1093 goto failed;
1094 }
1095
1096 client->req_id = id;
1097
1098 return;
1099
1100 failed:
1101 if (unref_avdtp_on_fail && a2dp->session) {
1102 avdtp_unref(a2dp->session);
1103 a2dp->session = NULL;
1104 }
1105 unix_ipc_error(client, BT_START_STREAM, EIO);
1106 }
1107
start_suspend(struct audio_device * dev,struct unix_client * client)1108 static void start_suspend(struct audio_device *dev, struct unix_client *client)
1109 {
1110 struct a2dp_data *a2dp;
1111 struct headset_data *hs;
1112 unsigned int id;
1113 gboolean unref_avdtp_on_fail = FALSE;
1114
1115 switch (client->type) {
1116 case TYPE_SINK:
1117 case TYPE_SOURCE:
1118 a2dp = &client->d.a2dp;
1119
1120 if (!a2dp->session) {
1121 a2dp->session = avdtp_get(&dev->src, &dev->dst);
1122 unref_avdtp_on_fail = TRUE;
1123 }
1124
1125 if (!a2dp->session) {
1126 error("Unable to get a session");
1127 goto failed;
1128 }
1129
1130 if (!a2dp->sep) {
1131 error("Unable to get a sep");
1132 goto failed;
1133 }
1134
1135 id = a2dp_suspend(a2dp->session, a2dp->sep,
1136 a2dp_suspend_complete, client);
1137 client->cancel = a2dp_cancel;
1138 break;
1139
1140 case TYPE_HEADSET:
1141 hs = &client->d.hs;
1142
1143 if (!hs->locked) {
1144 error("seid not opened");
1145 goto failed;
1146 }
1147
1148 id = headset_suspend_stream(dev, headset_suspend_complete,
1149 client);
1150 client->cancel = headset_cancel_stream;
1151 break;
1152
1153 case TYPE_GATEWAY:
1154 gateway_suspend_stream(dev);
1155 client->cancel = gateway_cancel_stream;
1156 headset_suspend_complete(dev, client);
1157 id = 1;
1158 break;
1159
1160 default:
1161 error("No known services for device");
1162 goto failed;
1163 }
1164
1165 if (id == 0) {
1166 error("suspend failed");
1167 goto failed;
1168 }
1169
1170 return;
1171
1172 failed:
1173 if (unref_avdtp_on_fail && a2dp->session) {
1174 avdtp_unref(a2dp->session);
1175 a2dp->session = NULL;
1176 }
1177 unix_ipc_error(client, BT_STOP_STREAM, EIO);
1178 }
1179
close_complete(struct audio_device * dev,void * user_data)1180 static void close_complete(struct audio_device *dev, void *user_data)
1181 {
1182 struct unix_client *client = user_data;
1183 char buf[BT_SUGGESTED_BUFFER_SIZE];
1184 struct bt_close_rsp *rsp = (void *) buf;
1185
1186 memset(buf, 0, sizeof(buf));
1187
1188 rsp->h.type = BT_RESPONSE;
1189 rsp->h.name = BT_CLOSE;
1190 rsp->h.length = sizeof(*rsp);
1191
1192 unix_ipc_sendmsg(client, &rsp->h);
1193
1194 return;
1195 }
1196
start_close(struct audio_device * dev,struct unix_client * client,gboolean reply)1197 static void start_close(struct audio_device *dev, struct unix_client *client,
1198 gboolean reply)
1199 {
1200 struct a2dp_data *a2dp;
1201 struct headset_data *hs;
1202
1203 if (!client->dev)
1204 goto failed;
1205
1206 switch (client->type) {
1207 case TYPE_HEADSET:
1208 hs = &client->d.hs;
1209
1210 if (client->dev && hs->locked) {
1211 headset_unlock(client->dev, client->lock);
1212 hs->locked = FALSE;
1213 }
1214 break;
1215 case TYPE_GATEWAY:
1216 break;
1217 case TYPE_SOURCE:
1218 case TYPE_SINK:
1219 a2dp = &client->d.a2dp;
1220
1221 if (client->cb_id > 0)
1222 avdtp_stream_remove_cb(a2dp->session, a2dp->stream,
1223 client->cb_id);
1224 if (a2dp->sep) {
1225 a2dp_sep_unlock(a2dp->sep, a2dp->session);
1226 a2dp->sep = NULL;
1227 }
1228 if (a2dp->session) {
1229 avdtp_unref(a2dp->session);
1230 a2dp->session = NULL;
1231 }
1232 break;
1233 default:
1234 error("No known services for device");
1235 goto failed;
1236 }
1237
1238 if (!reply)
1239 return;
1240
1241 close_complete(dev, client);
1242 client->dev = NULL;
1243
1244 return;
1245
1246 failed:
1247 if (reply)
1248 unix_ipc_error(client, BT_STOP_STREAM, EINVAL);
1249 }
1250
handle_getcapabilities_req(struct unix_client * client,struct bt_get_capabilities_req * req)1251 static void handle_getcapabilities_req(struct unix_client *client,
1252 struct bt_get_capabilities_req *req)
1253 {
1254 struct audio_device *dev;
1255 bdaddr_t src, dst;
1256 int err = EIO;
1257
1258 if (!check_nul(req->source) || !check_nul(req->destination) ||
1259 !check_nul(req->object)) {
1260 err = EINVAL;
1261 goto failed;
1262 }
1263
1264 str2ba(req->source, &src);
1265 str2ba(req->destination, &dst);
1266
1267 if (req->transport == BT_CAPABILITIES_TRANSPORT_SCO)
1268 client->interface = g_strdup(AUDIO_HEADSET_INTERFACE);
1269 else if (req->transport == BT_CAPABILITIES_TRANSPORT_A2DP)
1270 client->interface = g_strdup(AUDIO_SINK_INTERFACE);
1271
1272 if (!manager_find_device(req->object, &src, &dst, NULL, FALSE))
1273 goto failed;
1274
1275 dev = manager_find_device(req->object, &src, &dst, client->interface,
1276 TRUE);
1277 if (!dev && (req->flags & BT_FLAG_AUTOCONNECT))
1278 dev = manager_find_device(req->object, &src, &dst,
1279 client->interface, FALSE);
1280
1281 if (!dev && req->transport == BT_CAPABILITIES_TRANSPORT_SCO) {
1282 g_free(client->interface);
1283 client->interface = g_strdup(AUDIO_GATEWAY_INTERFACE);
1284
1285 dev = manager_find_device(req->object, &src, &dst,
1286 client->interface, TRUE);
1287 if (!dev && (req->flags & BT_FLAG_AUTOCONNECT))
1288 dev = manager_find_device(req->object, &src, &dst,
1289 client->interface, FALSE);
1290 }
1291
1292 if (!dev) {
1293 error("Unable to find a matching device");
1294 goto failed;
1295 }
1296
1297 client->type = select_service(dev, client->interface);
1298 if (client->type == TYPE_NONE) {
1299 error("No matching service found");
1300 goto failed;
1301 }
1302
1303 client->seid = req->seid;
1304
1305 start_discovery(dev, client);
1306
1307 return;
1308
1309 failed:
1310 unix_ipc_error(client, BT_GET_CAPABILITIES, err);
1311 }
1312
handle_sco_open(struct unix_client * client,struct bt_open_req * req)1313 static int handle_sco_open(struct unix_client *client, struct bt_open_req *req)
1314 {
1315 if (!client->interface)
1316 client->interface = g_strdup(AUDIO_HEADSET_INTERFACE);
1317 else if (!g_str_equal(client->interface, AUDIO_HEADSET_INTERFACE) &&
1318 !g_str_equal(client->interface, AUDIO_GATEWAY_INTERFACE))
1319 return -EIO;
1320
1321 debug("open sco - object=%s source=%s destination=%s lock=%s%s",
1322 strcmp(req->object, "") ? req->object : "ANY",
1323 strcmp(req->source, "") ? req->source : "ANY",
1324 strcmp(req->destination, "") ? req->destination : "ANY",
1325 req->lock & BT_READ_LOCK ? "read" : "",
1326 req->lock & BT_WRITE_LOCK ? "write" : "");
1327
1328 return 0;
1329 }
1330
handle_a2dp_open(struct unix_client * client,struct bt_open_req * req)1331 static int handle_a2dp_open(struct unix_client *client, struct bt_open_req *req)
1332 {
1333 if (!client->interface)
1334 client->interface = g_strdup(AUDIO_SINK_INTERFACE);
1335 else if (!g_str_equal(client->interface, AUDIO_SINK_INTERFACE))
1336 return -EIO;
1337
1338 debug("open a2dp - object=%s source=%s destination=%s lock=%s%s",
1339 strcmp(req->object, "") ? req->object : "ANY",
1340 strcmp(req->source, "") ? req->source : "ANY",
1341 strcmp(req->destination, "") ? req->destination : "ANY",
1342 req->lock & BT_READ_LOCK ? "read" : "",
1343 req->lock & BT_WRITE_LOCK ? "write" : "");
1344
1345 return 0;
1346 }
1347
handle_open_req(struct unix_client * client,struct bt_open_req * req)1348 static void handle_open_req(struct unix_client *client, struct bt_open_req *req)
1349 {
1350 struct audio_device *dev;
1351 bdaddr_t src, dst;
1352 int err = 0;
1353
1354 if (!check_nul(req->source) || !check_nul(req->destination) ||
1355 !check_nul(req->object)) {
1356 err = EINVAL;
1357 goto failed;
1358 }
1359
1360 str2ba(req->source, &src);
1361 str2ba(req->destination, &dst);
1362
1363 if (req->seid > BT_A2DP_SEID_RANGE) {
1364 err = handle_sco_open(client, req);
1365 if (err < 0) {
1366 err = -err;
1367 goto failed;
1368 }
1369 } else {
1370 err = handle_a2dp_open(client, req);
1371 if (err < 0) {
1372 err = -err;
1373 goto failed;
1374 }
1375 }
1376
1377 if (!manager_find_device(req->object, &src, &dst, NULL, FALSE))
1378 goto failed;
1379
1380 dev = manager_find_device(req->object, &src, &dst, client->interface,
1381 TRUE);
1382 if (!dev)
1383 dev = manager_find_device(req->object, &src, &dst,
1384 client->interface, FALSE);
1385
1386 if (!dev)
1387 goto failed;
1388
1389 client->seid = req->seid;
1390 client->lock = req->lock;
1391
1392 start_open(dev, client);
1393
1394 return;
1395
1396 failed:
1397 unix_ipc_error(client, BT_OPEN, err ? : EIO);
1398 }
1399
handle_sco_transport(struct unix_client * client,struct bt_set_configuration_req * req)1400 static int handle_sco_transport(struct unix_client *client,
1401 struct bt_set_configuration_req *req)
1402 {
1403 struct audio_device *dev = client->dev;
1404
1405 if (!client->interface) {
1406 if (dev->headset)
1407 client->interface = g_strdup(AUDIO_HEADSET_INTERFACE);
1408 else if (dev->gateway)
1409 client->interface = g_strdup(AUDIO_GATEWAY_INTERFACE);
1410 else
1411 return -EIO;
1412 } else if (!g_str_equal(client->interface, AUDIO_HEADSET_INTERFACE) &&
1413 !g_str_equal(client->interface, AUDIO_GATEWAY_INTERFACE))
1414 return -EIO;
1415
1416 return 0;
1417 }
1418
handle_a2dp_transport(struct unix_client * client,struct bt_set_configuration_req * req)1419 static int handle_a2dp_transport(struct unix_client *client,
1420 struct bt_set_configuration_req *req)
1421 {
1422 struct avdtp_service_capability *media_transport, *media_codec;
1423 struct sbc_codec_cap sbc_cap;
1424 struct mpeg_codec_cap mpeg_cap;
1425
1426 if (!client->interface)
1427 client->interface = g_strdup(AUDIO_SINK_INTERFACE);
1428 else if (!g_str_equal(client->interface, AUDIO_SINK_INTERFACE))
1429 return -EIO;
1430
1431 if (client->caps) {
1432 g_slist_foreach(client->caps, (GFunc) g_free, NULL);
1433 g_slist_free(client->caps);
1434 client->caps = NULL;
1435 }
1436
1437 media_transport = avdtp_service_cap_new(AVDTP_MEDIA_TRANSPORT,
1438 NULL, 0);
1439
1440 client->caps = g_slist_append(client->caps, media_transport);
1441
1442 if (req->codec.type == BT_A2DP_MPEG12_SINK) {
1443 mpeg_capabilities_t *mpeg = (void *) &req->codec;
1444
1445 memset(&mpeg_cap, 0, sizeof(mpeg_cap));
1446
1447 mpeg_cap.cap.media_type = AVDTP_MEDIA_TYPE_AUDIO;
1448 mpeg_cap.cap.media_codec_type = A2DP_CODEC_MPEG12;
1449 mpeg_cap.channel_mode = mpeg->channel_mode;
1450 mpeg_cap.crc = mpeg->crc;
1451 mpeg_cap.layer = mpeg->layer;
1452 mpeg_cap.frequency = mpeg->frequency;
1453 mpeg_cap.mpf = mpeg->mpf;
1454 mpeg_cap.bitrate = mpeg->bitrate;
1455
1456 media_codec = avdtp_service_cap_new(AVDTP_MEDIA_CODEC, &mpeg_cap,
1457 sizeof(mpeg_cap));
1458
1459 print_mpeg12(&mpeg_cap);
1460 } else if (req->codec.type == BT_A2DP_SBC_SINK) {
1461 sbc_capabilities_t *sbc = (void *) &req->codec;
1462
1463 memset(&sbc_cap, 0, sizeof(sbc_cap));
1464
1465 sbc_cap.cap.media_type = AVDTP_MEDIA_TYPE_AUDIO;
1466 sbc_cap.cap.media_codec_type = A2DP_CODEC_SBC;
1467 sbc_cap.channel_mode = sbc->channel_mode;
1468 sbc_cap.frequency = sbc->frequency;
1469 sbc_cap.allocation_method = sbc->allocation_method;
1470 sbc_cap.subbands = sbc->subbands;
1471 sbc_cap.block_length = sbc->block_length;
1472 sbc_cap.min_bitpool = sbc->min_bitpool;
1473 sbc_cap.max_bitpool = sbc->max_bitpool;
1474
1475 media_codec = avdtp_service_cap_new(AVDTP_MEDIA_CODEC, &sbc_cap,
1476 sizeof(sbc_cap));
1477
1478 print_sbc(&sbc_cap);
1479 } else
1480 return -EINVAL;
1481
1482 client->caps = g_slist_append(client->caps, media_codec);
1483
1484 return 0;
1485 }
1486
handle_setconfiguration_req(struct unix_client * client,struct bt_set_configuration_req * req)1487 static void handle_setconfiguration_req(struct unix_client *client,
1488 struct bt_set_configuration_req *req)
1489 {
1490 int err = 0;
1491
1492 if (req->codec.seid != client->seid) {
1493 error("Unable to set configuration: seid %d not opened",
1494 client->seid);
1495 goto failed;
1496 }
1497
1498 if (!client->dev)
1499 goto failed;
1500
1501 if (req->codec.transport == BT_CAPABILITIES_TRANSPORT_SCO) {
1502 err = handle_sco_transport(client, req);
1503 if (err < 0) {
1504 err = -err;
1505 goto failed;
1506 }
1507 } else if (req->codec.transport == BT_CAPABILITIES_TRANSPORT_A2DP) {
1508 err = handle_a2dp_transport(client, req);
1509 if (err < 0) {
1510 err = -err;
1511 goto failed;
1512 }
1513 }
1514
1515 start_config(client->dev, client);
1516
1517 return;
1518
1519 failed:
1520 unix_ipc_error(client, BT_SET_CONFIGURATION, err ? : EIO);
1521 }
1522
handle_streamstart_req(struct unix_client * client,struct bt_start_stream_req * req)1523 static void handle_streamstart_req(struct unix_client *client,
1524 struct bt_start_stream_req *req)
1525 {
1526 if (!client->dev)
1527 goto failed;
1528
1529 start_resume(client->dev, client);
1530
1531 return;
1532
1533 failed:
1534 unix_ipc_error(client, BT_START_STREAM, EIO);
1535 }
1536
handle_streamstop_req(struct unix_client * client,struct bt_stop_stream_req * req)1537 static void handle_streamstop_req(struct unix_client *client,
1538 struct bt_stop_stream_req *req)
1539 {
1540 if (!client->dev)
1541 goto failed;
1542
1543 start_suspend(client->dev, client);
1544
1545 return;
1546
1547 failed:
1548 unix_ipc_error(client, BT_STOP_STREAM, EIO);
1549 }
1550
handle_close_req(struct unix_client * client,struct bt_close_req * req)1551 static void handle_close_req(struct unix_client *client,
1552 struct bt_close_req *req)
1553 {
1554 if (!client->dev)
1555 goto failed;
1556
1557 start_close(client->dev, client, TRUE);
1558
1559 return;
1560
1561 failed:
1562 unix_ipc_error(client, BT_CLOSE, EIO);
1563 }
1564
handle_control_req(struct unix_client * client,struct bt_control_req * req)1565 static void handle_control_req(struct unix_client *client,
1566 struct bt_control_req *req)
1567 {
1568 /* FIXME: really implement that */
1569 char buf[BT_SUGGESTED_BUFFER_SIZE];
1570 struct bt_set_configuration_rsp *rsp = (void *) buf;
1571
1572 memset(buf, 0, sizeof(buf));
1573 rsp->h.type = BT_RESPONSE;
1574 rsp->h.name = BT_CONTROL;
1575 rsp->h.length = sizeof(*rsp);
1576
1577 unix_ipc_sendmsg(client, &rsp->h);
1578 }
1579
client_cb(GIOChannel * chan,GIOCondition cond,gpointer data)1580 static gboolean client_cb(GIOChannel *chan, GIOCondition cond, gpointer data)
1581 {
1582 char buf[BT_SUGGESTED_BUFFER_SIZE];
1583 bt_audio_msg_header_t *msghdr = (void *) buf;
1584 struct unix_client *client = data;
1585 int len;
1586 const char *type, *name;
1587
1588 if (cond & G_IO_NVAL)
1589 return FALSE;
1590
1591 if (cond & (G_IO_HUP | G_IO_ERR)) {
1592 debug("Unix client disconnected (fd=%d)", client->sock);
1593
1594 goto failed;
1595 }
1596
1597 memset(buf, 0, sizeof(buf));
1598
1599 len = recv(client->sock, buf, sizeof(buf), 0);
1600 if (len < 0) {
1601 error("recv: %s (%d)", strerror(errno), errno);
1602 goto failed;
1603 }
1604
1605 type = bt_audio_strtype(msghdr->type);
1606 name = bt_audio_strname(msghdr->name);
1607
1608 debug("Audio API: %s <- %s", type, name);
1609
1610 if (msghdr->length != len) {
1611 error("Invalid message: length mismatch");
1612 goto failed;
1613 }
1614
1615 switch (msghdr->name) {
1616 case BT_GET_CAPABILITIES:
1617 handle_getcapabilities_req(client,
1618 (struct bt_get_capabilities_req *) msghdr);
1619 break;
1620 case BT_OPEN:
1621 handle_open_req(client,
1622 (struct bt_open_req *) msghdr);
1623 break;
1624 case BT_SET_CONFIGURATION:
1625 handle_setconfiguration_req(client,
1626 (struct bt_set_configuration_req *) msghdr);
1627 break;
1628 case BT_START_STREAM:
1629 handle_streamstart_req(client,
1630 (struct bt_start_stream_req *) msghdr);
1631 break;
1632 case BT_STOP_STREAM:
1633 handle_streamstop_req(client,
1634 (struct bt_stop_stream_req *) msghdr);
1635 break;
1636 case BT_CLOSE:
1637 handle_close_req(client,
1638 (struct bt_close_req *) msghdr);
1639 break;
1640 case BT_CONTROL:
1641 handle_control_req(client,
1642 (struct bt_control_req *) msghdr);
1643 break;
1644 default:
1645 error("Audio API: received unexpected message name %d",
1646 msghdr->name);
1647 }
1648
1649 return TRUE;
1650
1651 failed:
1652 clients = g_slist_remove(clients, client);
1653 start_close(client->dev, client, FALSE);
1654 client_free(client);
1655 return FALSE;
1656 }
1657
server_cb(GIOChannel * chan,GIOCondition cond,gpointer data)1658 static gboolean server_cb(GIOChannel *chan, GIOCondition cond, gpointer data)
1659 {
1660 struct sockaddr_un addr;
1661 socklen_t addrlen;
1662 int sk, cli_sk;
1663 struct unix_client *client;
1664 GIOChannel *io;
1665
1666 if (cond & G_IO_NVAL)
1667 return FALSE;
1668
1669 if (cond & (G_IO_HUP | G_IO_ERR)) {
1670 g_io_channel_close(chan);
1671 return FALSE;
1672 }
1673
1674 sk = g_io_channel_unix_get_fd(chan);
1675
1676 memset(&addr, 0, sizeof(addr));
1677 addrlen = sizeof(addr);
1678
1679 cli_sk = accept(sk, (struct sockaddr *) &addr, &addrlen);
1680 if (cli_sk < 0) {
1681 error("accept: %s (%d)", strerror(errno), errno);
1682 return TRUE;
1683 }
1684
1685 debug("Accepted new client connection on unix socket (fd=%d)", cli_sk);
1686 set_nonblocking(cli_sk);
1687
1688 client = g_new0(struct unix_client, 1);
1689 client->sock = cli_sk;
1690 clients = g_slist_append(clients, client);
1691
1692 io = g_io_channel_unix_new(cli_sk);
1693 g_io_add_watch(io, G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
1694 client_cb, client);
1695 g_io_channel_unref(io);
1696
1697 return TRUE;
1698 }
1699
unix_device_removed(struct audio_device * dev)1700 void unix_device_removed(struct audio_device *dev)
1701 {
1702 GSList *l;
1703
1704 debug("unix_device_removed(%p)", dev);
1705
1706 l = clients;
1707 while (l) {
1708 struct unix_client *client = l->data;
1709
1710 l = l->next;
1711
1712 if (client->dev == dev) {
1713 clients = g_slist_remove(clients, client);
1714 start_close(client->dev, client, FALSE);
1715 client_free(client);
1716 }
1717 }
1718 }
1719
unix_init(void)1720 int unix_init(void)
1721 {
1722 GIOChannel *io;
1723 struct sockaddr_un addr = {
1724 AF_UNIX, BT_IPC_SOCKET_NAME
1725 };
1726
1727 int sk, err;
1728
1729 sk = socket(PF_LOCAL, SOCK_STREAM, 0);
1730 if (sk < 0) {
1731 err = errno;
1732 error("Can't create unix socket: %s (%d)", strerror(err), err);
1733 return -err;
1734 }
1735
1736 if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
1737 error("Can't bind unix socket: %s (%d)", strerror(errno),
1738 errno);
1739 close(sk);
1740 return -1;
1741 }
1742
1743 set_nonblocking(sk);
1744
1745 if (listen(sk, 1) < 0) {
1746 error("Can't listen on unix socket: %s (%d)",
1747 strerror(errno), errno);
1748 close(sk);
1749 return -1;
1750 }
1751
1752 unix_sock = sk;
1753
1754 io = g_io_channel_unix_new(sk);
1755 g_io_add_watch(io, G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
1756 server_cb, NULL);
1757 g_io_channel_unref(io);
1758
1759 debug("Unix socket created: %d", sk);
1760
1761 return 0;
1762 }
1763
unix_exit(void)1764 void unix_exit(void)
1765 {
1766 g_slist_foreach(clients, (GFunc) client_free, NULL);
1767 g_slist_free(clients);
1768 if (unix_sock >= 0) {
1769 close(unix_sock);
1770 unix_sock = -1;
1771 }
1772 }
1773