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 <fcntl.h>
31 #include <sys/socket.h>
32 #include <sys/un.h>
33 #include <stdlib.h>
34 #include <errno.h>
35 #include <unistd.h>
36 #include <stdint.h>
37
38 #include <bluetooth/bluetooth.h>
39 #include <bluetooth/sdp.h>
40 #include <dbus/dbus.h>
41 #include <glib.h>
42
43 #include "log.h"
44 #include "ipc.h"
45 #include "device.h"
46 #include "manager.h"
47 #include "avdtp.h"
48 #include "media.h"
49 #include "a2dp.h"
50 #include "headset.h"
51 #include "sink.h"
52 #include "gateway.h"
53 #include "unix.h"
54 #include "glib-helper.h"
55
56 #define check_nul(str) (str[sizeof(str) - 1] == '\0')
57
58 typedef enum {
59 TYPE_NONE,
60 TYPE_HEADSET,
61 TYPE_GATEWAY,
62 TYPE_SINK,
63 TYPE_SOURCE
64 } service_type_t;
65
66 typedef void (*notify_cb_t) (struct audio_device *dev, void *data);
67
68 struct a2dp_data {
69 struct avdtp *session;
70 struct avdtp_stream *stream;
71 struct a2dp_sep *sep;
72 };
73
74 struct headset_data {
75 gboolean locked;
76 };
77
78 struct unix_client {
79 struct audio_device *dev;
80 GSList *caps;
81 service_type_t type;
82 char *interface;
83 uint8_t seid;
84 union {
85 struct a2dp_data a2dp;
86 struct headset_data hs;
87 } d;
88 int sock;
89 int lock;
90 int data_fd; /* To be deleted once two phase configuration is fully implemented */
91 unsigned int req_id;
92 unsigned int cb_id;
93 gboolean (*cancel) (struct audio_device *dev, unsigned int id);
94 };
95
96 static GSList *clients = NULL;
97
98 static int unix_sock = -1;
99
client_free(struct unix_client * client)100 static void client_free(struct unix_client *client)
101 {
102 DBG("client_free(%p)", client);
103
104 if (client->cancel && client->dev && client->req_id > 0)
105 client->cancel(client->dev, client->req_id);
106
107 if (client->sock >= 0)
108 close(client->sock);
109
110 if (client->caps) {
111 g_slist_foreach(client->caps, (GFunc) g_free, NULL);
112 g_slist_free(client->caps);
113 }
114
115 g_free(client->interface);
116 g_free(client);
117 }
118
set_nonblocking(int fd)119 static int set_nonblocking(int fd)
120 {
121 long arg;
122
123 arg = fcntl(fd, F_GETFL);
124 if (arg < 0)
125 return -errno;
126
127 /* Return if already nonblocking */
128 if (arg & O_NONBLOCK)
129 return 0;
130
131 arg |= O_NONBLOCK;
132 if (fcntl(fd, F_SETFL, arg) < 0)
133 return -errno;
134
135 return 0;
136 }
137
138 /* Pass file descriptor through local domain sockets (AF_LOCAL, formerly
139 * AF_UNIX) and the sendmsg() system call with the cmsg_type field of a "struct
140 * cmsghdr" set to SCM_RIGHTS and the data being an integer value equal to the
141 * handle of the file descriptor to be passed. */
unix_sendmsg_fd(int sock,int fd)142 static int unix_sendmsg_fd(int sock, int fd)
143 {
144 char cmsg_b[CMSG_SPACE(sizeof(int))], m = 'm';
145 struct cmsghdr *cmsg;
146 struct iovec iov = { &m, sizeof(m) };
147 struct msghdr msgh;
148
149 memset(&msgh, 0, sizeof(msgh));
150 msgh.msg_iov = &iov;
151 msgh.msg_iovlen = 1;
152 msgh.msg_control = &cmsg_b;
153 msgh.msg_controllen = CMSG_LEN(sizeof(int));
154
155 cmsg = CMSG_FIRSTHDR(&msgh);
156 cmsg->cmsg_level = SOL_SOCKET;
157 cmsg->cmsg_type = SCM_RIGHTS;
158 cmsg->cmsg_len = CMSG_LEN(sizeof(int));
159 /* Initialize the payload */
160 memcpy(CMSG_DATA(cmsg), &fd, sizeof(int));
161
162 return sendmsg(sock, &msgh, MSG_NOSIGNAL);
163 }
164
unix_ipc_sendmsg(struct unix_client * client,const bt_audio_msg_header_t * msg)165 static void unix_ipc_sendmsg(struct unix_client *client,
166 const bt_audio_msg_header_t *msg)
167 {
168 const char *type = bt_audio_strtype(msg->type);
169 const char *name = bt_audio_strname(msg->name);
170
171 DBG("Audio API: %s -> %s", type, name);
172
173 if (send(client->sock, msg, msg->length, 0) < 0)
174 error("Error %s(%d)", strerror(errno), errno);
175 }
176
unix_ipc_error(struct unix_client * client,uint8_t name,int err)177 static void unix_ipc_error(struct unix_client *client, uint8_t name, int err)
178 {
179 char buf[BT_SUGGESTED_BUFFER_SIZE];
180 bt_audio_error_t *rsp = (void *) buf;
181
182 if (!g_slist_find(clients, client))
183 return;
184
185 memset(buf, 0, sizeof(buf));
186 rsp->h.type = BT_ERROR;
187 rsp->h.name = name;
188 rsp->h.length = sizeof(*rsp);
189
190 rsp->posix_errno = err;
191
192 DBG("sending error %s(%d)", strerror(err), err);
193 unix_ipc_sendmsg(client, &rsp->h);
194 }
195
select_service(struct audio_device * dev,const char * interface)196 static service_type_t select_service(struct audio_device *dev, const char *interface)
197 {
198 if (!interface) {
199 if (dev->sink && avdtp_is_connected(&dev->src, &dev->dst))
200 return TYPE_SINK;
201 else if (dev->source && avdtp_is_connected(&dev->src,
202 &dev->dst))
203 return TYPE_SOURCE;
204 else if (dev->headset && headset_is_active(dev))
205 return TYPE_HEADSET;
206 else if (dev->sink)
207 return TYPE_SINK;
208 else if (dev->source)
209 return TYPE_SOURCE;
210 else if (dev->headset)
211 return TYPE_HEADSET;
212 } else if (!strcmp(interface, AUDIO_SOURCE_INTERFACE) && dev->source)
213 return TYPE_SOURCE;
214 else if (!strcmp(interface, AUDIO_SINK_INTERFACE) && dev->sink)
215 return TYPE_SINK;
216 else if (!strcmp(interface, AUDIO_HEADSET_INTERFACE) && dev->headset)
217 return TYPE_HEADSET;
218 else if (!strcmp(interface, AUDIO_GATEWAY_INTERFACE) && dev->gateway)
219 return TYPE_GATEWAY;
220
221 return TYPE_NONE;
222 }
223
stream_state_changed(struct avdtp_stream * stream,avdtp_state_t old_state,avdtp_state_t new_state,struct avdtp_error * err,void * user_data)224 static void stream_state_changed(struct avdtp_stream *stream,
225 avdtp_state_t old_state,
226 avdtp_state_t new_state,
227 struct avdtp_error *err,
228 void *user_data)
229 {
230 struct unix_client *client = user_data;
231 struct a2dp_data *a2dp = &client->d.a2dp;
232
233 switch (new_state) {
234 case AVDTP_STATE_IDLE:
235 if (a2dp->sep) {
236 a2dp_sep_unlock(a2dp->sep, a2dp->session);
237 a2dp->sep = NULL;
238 }
239 if (a2dp->session) {
240 avdtp_unref(a2dp->session);
241 a2dp->session = NULL;
242 }
243 a2dp->stream = NULL;
244 client->cb_id = 0;
245 break;
246 default:
247 break;
248 }
249 }
250
headset_generate_capability(struct audio_device * dev,codec_capabilities_t * codec)251 static uint8_t headset_generate_capability(struct audio_device *dev,
252 codec_capabilities_t *codec)
253 {
254 pcm_capabilities_t *pcm;
255
256 codec->seid = BT_A2DP_SEID_RANGE + 1;
257 codec->transport = BT_CAPABILITIES_TRANSPORT_SCO;
258 codec->type = BT_HFP_CODEC_PCM;
259 codec->length = sizeof(*pcm);
260
261 pcm = (void *) codec;
262 pcm->sampling_rate = 8000;
263 if (dev->headset) {
264 if (headset_get_nrec(dev))
265 pcm->flags |= BT_PCM_FLAG_NREC;
266 if (!headset_get_sco_hci(dev))
267 pcm->flags |= BT_PCM_FLAG_PCM_ROUTING;
268 codec->configured = headset_is_active(dev);
269 codec->lock = headset_get_lock(dev);
270 } else {
271 pcm->flags |= BT_PCM_FLAG_NREC;
272 codec->configured = TRUE;
273 codec->lock = 0;
274 }
275
276 return codec->length;
277 }
278
headset_discovery_complete(struct audio_device * dev,void * user_data)279 static void headset_discovery_complete(struct audio_device *dev, void *user_data)
280 {
281 struct unix_client *client = user_data;
282 char buf[BT_SUGGESTED_BUFFER_SIZE];
283 struct bt_get_capabilities_rsp *rsp = (void *) buf;
284 uint8_t length;
285
286 client->req_id = 0;
287
288 if (!dev)
289 goto failed;
290
291 memset(buf, 0, sizeof(buf));
292
293 length = headset_generate_capability(dev, (void *) rsp->data);
294
295 rsp->h.type = BT_RESPONSE;
296 rsp->h.name = BT_GET_CAPABILITIES;
297 rsp->h.length = sizeof(*rsp) + length;
298
299 ba2str(&dev->src, rsp->source);
300 ba2str(&dev->dst, rsp->destination);
301 strncpy(rsp->object, dev->path, sizeof(rsp->object));
302
303 unix_ipc_sendmsg(client, &rsp->h);
304
305 return;
306
307 failed:
308 error("discovery failed");
309 unix_ipc_error(client, BT_SET_CONFIGURATION, EIO);
310 }
311
headset_setup_complete(struct audio_device * dev,void * user_data)312 static void headset_setup_complete(struct audio_device *dev, void *user_data)
313 {
314 struct unix_client *client = user_data;
315 char buf[BT_SUGGESTED_BUFFER_SIZE];
316 struct bt_set_configuration_rsp *rsp = (void *) buf;
317
318 client->req_id = 0;
319
320 if (!dev)
321 goto failed;
322
323 memset(buf, 0, sizeof(buf));
324
325 rsp->h.type = BT_RESPONSE;
326 rsp->h.name = BT_SET_CONFIGURATION;
327 rsp->h.length = sizeof(*rsp);
328
329 rsp->link_mtu = 48;
330
331 client->data_fd = headset_get_sco_fd(dev);
332
333 unix_ipc_sendmsg(client, &rsp->h);
334
335 return;
336
337 failed:
338 error("config failed");
339 unix_ipc_error(client, BT_SET_CONFIGURATION, EIO);
340 }
341
gateway_setup_complete(struct audio_device * dev,GError * err,void * user_data)342 static void gateway_setup_complete(struct audio_device *dev, GError *err, void *user_data)
343 {
344 struct unix_client *client = user_data;
345 char buf[BT_SUGGESTED_BUFFER_SIZE];
346 struct bt_set_configuration_rsp *rsp = (void *) buf;
347
348 if (err) {
349 unix_ipc_error(client, BT_SET_CONFIGURATION, err->code);
350 return;
351 }
352
353 client->req_id = 0;
354
355 memset(buf, 0, sizeof(buf));
356
357 rsp->h.type = BT_RESPONSE;
358 rsp->h.name = BT_SET_CONFIGURATION;
359 rsp->h.length = sizeof(*rsp);
360
361 rsp->link_mtu = 48;
362
363 client->data_fd = gateway_get_sco_fd(dev);
364
365 unix_ipc_sendmsg(client, &rsp->h);
366 }
367
headset_resume_complete(struct audio_device * dev,void * user_data)368 static void headset_resume_complete(struct audio_device *dev, void *user_data)
369 {
370 struct unix_client *client = user_data;
371 char buf[BT_SUGGESTED_BUFFER_SIZE];
372 struct bt_start_stream_rsp *rsp = (void *) buf;
373 struct bt_new_stream_ind *ind = (void *) buf;
374
375 client->req_id = 0;
376
377 if (!dev)
378 goto failed;
379
380 client->data_fd = headset_get_sco_fd(dev);
381 if (client->data_fd < 0) {
382 error("Unable to get a SCO fd");
383 goto failed;
384 }
385
386 memset(buf, 0, sizeof(buf));
387 rsp->h.type = BT_RESPONSE;
388 rsp->h.name = BT_START_STREAM;
389 rsp->h.length = sizeof(*rsp);
390
391 unix_ipc_sendmsg(client, &rsp->h);
392
393 memset(buf, 0, sizeof(buf));
394 ind->h.type = BT_INDICATION;
395 ind->h.name = BT_NEW_STREAM;
396 ind->h.length = sizeof(*ind);
397
398 unix_ipc_sendmsg(client, &ind->h);
399
400 if (unix_sendmsg_fd(client->sock, client->data_fd) < 0) {
401 error("unix_sendmsg_fd: %s(%d)", strerror(errno), errno);
402 goto failed;
403 }
404
405 return;
406
407 failed:
408 error("headset_resume_complete: resume failed");
409 unix_ipc_error(client, BT_START_STREAM, EIO);
410 }
411
gateway_resume_complete(struct audio_device * dev,GError * err,void * user_data)412 static void gateway_resume_complete(struct audio_device *dev, GError *err, void *user_data)
413 {
414 struct unix_client *client = user_data;
415 char buf[BT_SUGGESTED_BUFFER_SIZE];
416 struct bt_start_stream_rsp *rsp = (void *) buf;
417 struct bt_new_stream_ind *ind = (void *) buf;
418
419 if (err) {
420 unix_ipc_error(client, BT_START_STREAM, err->code);
421 return;
422 }
423
424 memset(buf, 0, sizeof(buf));
425 rsp->h.type = BT_RESPONSE;
426 rsp->h.name = BT_START_STREAM;
427 rsp->h.length = sizeof(*rsp);
428
429 unix_ipc_sendmsg(client, &rsp->h);
430
431 memset(buf, 0, sizeof(buf));
432 ind->h.type = BT_INDICATION;
433 ind->h.name = BT_NEW_STREAM;
434 ind->h.length = sizeof(*ind);
435
436 unix_ipc_sendmsg(client, &ind->h);
437
438 client->data_fd = gateway_get_sco_fd(dev);
439 if (unix_sendmsg_fd(client->sock, client->data_fd) < 0) {
440 error("unix_sendmsg_fd: %s(%d)", strerror(errno), errno);
441 unix_ipc_error(client, BT_START_STREAM, EIO);
442 }
443
444 client->req_id = 0;
445 }
446
headset_suspend_complete(struct audio_device * dev,void * user_data)447 static void headset_suspend_complete(struct audio_device *dev, void *user_data)
448 {
449 struct unix_client *client = user_data;
450 char buf[BT_SUGGESTED_BUFFER_SIZE];
451 struct bt_stop_stream_rsp *rsp = (void *) buf;
452
453 if (!dev)
454 goto failed;
455
456 memset(buf, 0, sizeof(buf));
457 rsp->h.type = BT_RESPONSE;
458 rsp->h.name = BT_STOP_STREAM;
459 rsp->h.length = sizeof(*rsp);
460
461 unix_ipc_sendmsg(client, &rsp->h);
462
463 return;
464
465 failed:
466 error("suspend failed");
467 unix_ipc_error(client, BT_STOP_STREAM, EIO);
468 }
469
print_mpeg12(struct mpeg_codec_cap * mpeg)470 static void print_mpeg12(struct mpeg_codec_cap *mpeg)
471 {
472 DBG("Media Codec: MPEG12"
473 " Channel Modes: %s%s%s%s"
474 " Frequencies: %s%s%s%s%s%s"
475 " Layers: %s%s%s"
476 " CRC: %s",
477 mpeg->channel_mode & MPEG_CHANNEL_MODE_MONO ? "Mono " : "",
478 mpeg->channel_mode & MPEG_CHANNEL_MODE_DUAL_CHANNEL ?
479 "DualChannel " : "",
480 mpeg->channel_mode & MPEG_CHANNEL_MODE_STEREO ? "Stereo " : "",
481 mpeg->channel_mode & MPEG_CHANNEL_MODE_JOINT_STEREO ?
482 "JointStereo " : "",
483 mpeg->frequency & MPEG_SAMPLING_FREQ_16000 ? "16Khz " : "",
484 mpeg->frequency & MPEG_SAMPLING_FREQ_22050 ? "22.05Khz " : "",
485 mpeg->frequency & MPEG_SAMPLING_FREQ_24000 ? "24Khz " : "",
486 mpeg->frequency & MPEG_SAMPLING_FREQ_32000 ? "32Khz " : "",
487 mpeg->frequency & MPEG_SAMPLING_FREQ_44100 ? "44.1Khz " : "",
488 mpeg->frequency & MPEG_SAMPLING_FREQ_48000 ? "48Khz " : "",
489 mpeg->layer & MPEG_LAYER_MP1 ? "1 " : "",
490 mpeg->layer & MPEG_LAYER_MP2 ? "2 " : "",
491 mpeg->layer & MPEG_LAYER_MP3 ? "3 " : "",
492 mpeg->crc ? "Yes" : "No");
493 }
494
print_sbc(struct sbc_codec_cap * sbc)495 static void print_sbc(struct sbc_codec_cap *sbc)
496 {
497 DBG("Media Codec: SBC"
498 " Channel Modes: %s%s%s%s"
499 " Frequencies: %s%s%s%s"
500 " Subbands: %s%s"
501 " Blocks: %s%s%s%s"
502 " Bitpool: %d-%d",
503 sbc->channel_mode & SBC_CHANNEL_MODE_MONO ? "Mono " : "",
504 sbc->channel_mode & SBC_CHANNEL_MODE_DUAL_CHANNEL ?
505 "DualChannel " : "",
506 sbc->channel_mode & SBC_CHANNEL_MODE_STEREO ? "Stereo " : "",
507 sbc->channel_mode & SBC_CHANNEL_MODE_JOINT_STEREO ? "JointStereo" : "",
508 sbc->frequency & SBC_SAMPLING_FREQ_16000 ? "16Khz " : "",
509 sbc->frequency & SBC_SAMPLING_FREQ_32000 ? "32Khz " : "",
510 sbc->frequency & SBC_SAMPLING_FREQ_44100 ? "44.1Khz " : "",
511 sbc->frequency & SBC_SAMPLING_FREQ_48000 ? "48Khz " : "",
512 sbc->subbands & SBC_SUBBANDS_4 ? "4 " : "",
513 sbc->subbands & SBC_SUBBANDS_8 ? "8 " : "",
514 sbc->block_length & SBC_BLOCK_LENGTH_4 ? "4 " : "",
515 sbc->block_length & SBC_BLOCK_LENGTH_8 ? "8 " : "",
516 sbc->block_length & SBC_BLOCK_LENGTH_12 ? "12 " : "",
517 sbc->block_length & SBC_BLOCK_LENGTH_16 ? "16 " : "",
518 sbc->min_bitpool, sbc->max_bitpool);
519 }
520
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)521 static int a2dp_append_codec(struct bt_get_capabilities_rsp *rsp,
522 struct avdtp_service_capability *cap,
523 uint8_t seid,
524 uint8_t type,
525 uint8_t configured,
526 uint8_t lock)
527 {
528 struct avdtp_media_codec_capability *codec_cap = (void *) cap->data;
529 codec_capabilities_t *codec = (void *) rsp + rsp->h.length;
530 size_t space_left;
531
532 if (rsp->h.length > BT_SUGGESTED_BUFFER_SIZE)
533 return -ENOMEM;
534
535 space_left = BT_SUGGESTED_BUFFER_SIZE - rsp->h.length;
536
537 /* endianess prevent direct cast */
538 if (codec_cap->media_codec_type == A2DP_CODEC_SBC) {
539 struct sbc_codec_cap *sbc_cap = (void *) codec_cap;
540 sbc_capabilities_t *sbc = (void *) codec;
541
542 if (space_left < sizeof(sbc_capabilities_t))
543 return -ENOMEM;
544
545 if (type == AVDTP_SEP_TYPE_SINK)
546 codec->type = BT_A2DP_SBC_SINK;
547 else if (type == AVDTP_SEP_TYPE_SOURCE)
548 codec->type = BT_A2DP_SBC_SOURCE;
549 else
550 return -EINVAL;
551
552 codec->length = sizeof(sbc_capabilities_t);
553
554 sbc->channel_mode = sbc_cap->channel_mode;
555 sbc->frequency = sbc_cap->frequency;
556 sbc->allocation_method = sbc_cap->allocation_method;
557 sbc->subbands = sbc_cap->subbands;
558 sbc->block_length = sbc_cap->block_length;
559 sbc->min_bitpool = sbc_cap->min_bitpool;
560 sbc->max_bitpool = sbc_cap->max_bitpool;
561
562 print_sbc(sbc_cap);
563 } else if (codec_cap->media_codec_type == A2DP_CODEC_MPEG12) {
564 struct mpeg_codec_cap *mpeg_cap = (void *) codec_cap;
565 mpeg_capabilities_t *mpeg = (void *) codec;
566
567 if (space_left < sizeof(mpeg_capabilities_t))
568 return -ENOMEM;
569
570 if (type == AVDTP_SEP_TYPE_SINK)
571 codec->type = BT_A2DP_MPEG12_SINK;
572 else if (type == AVDTP_SEP_TYPE_SOURCE)
573 codec->type = BT_A2DP_MPEG12_SOURCE;
574 else
575 return -EINVAL;
576
577 codec->length = sizeof(mpeg_capabilities_t);
578
579 mpeg->channel_mode = mpeg_cap->channel_mode;
580 mpeg->crc = mpeg_cap->crc;
581 mpeg->layer = mpeg_cap->layer;
582 mpeg->frequency = mpeg_cap->frequency;
583 mpeg->mpf = mpeg_cap->mpf;
584 mpeg->bitrate = mpeg_cap->bitrate;
585
586 print_mpeg12(mpeg_cap);
587 } else {
588 size_t codec_length, type_length, total_length;
589
590 codec_length = cap->length - (sizeof(struct avdtp_service_capability)
591 + sizeof(struct avdtp_media_codec_capability));
592 type_length = sizeof(codec_cap->media_codec_type);
593 total_length = type_length + codec_length +
594 sizeof(codec_capabilities_t);
595
596 if (space_left < total_length)
597 return -ENOMEM;
598
599 if (type == AVDTP_SEP_TYPE_SINK)
600 codec->type = BT_A2DP_UNKNOWN_SINK;
601 else if (type == AVDTP_SEP_TYPE_SOURCE)
602 codec->type = BT_A2DP_UNKNOWN_SOURCE;
603 else
604 return -EINVAL;
605
606 codec->length = total_length;
607 memcpy(codec->data, &codec_cap->media_codec_type, type_length);
608 memcpy(codec->data + type_length, codec_cap->data,
609 codec_length);
610 }
611
612 codec->seid = seid;
613 codec->configured = configured;
614 codec->lock = lock;
615 rsp->h.length += codec->length;
616
617 DBG("Append %s seid %d - length %d - total %d",
618 configured ? "configured" : "", seid, codec->length,
619 rsp->h.length);
620
621 return 0;
622 }
623
a2dp_discovery_complete(struct avdtp * session,GSList * seps,struct avdtp_error * err,void * user_data)624 static void a2dp_discovery_complete(struct avdtp *session, GSList *seps,
625 struct avdtp_error *err,
626 void *user_data)
627 {
628 struct unix_client *client = user_data;
629 char buf[BT_SUGGESTED_BUFFER_SIZE];
630 struct bt_get_capabilities_rsp *rsp = (void *) buf;
631 struct a2dp_data *a2dp = &client->d.a2dp;
632
633 if (!g_slist_find(clients, client)) {
634 DBG("Client disconnected during discovery");
635 return;
636 }
637
638 if (err)
639 goto failed;
640
641 memset(buf, 0, sizeof(buf));
642 client->req_id = 0;
643
644 rsp->h.type = BT_RESPONSE;
645 rsp->h.name = BT_GET_CAPABILITIES;
646 rsp->h.length = sizeof(*rsp);
647 ba2str(&client->dev->src, rsp->source);
648 ba2str(&client->dev->dst, rsp->destination);
649 strncpy(rsp->object, client->dev->path, sizeof(rsp->object));
650
651 for (; seps; seps = g_slist_next(seps)) {
652 struct avdtp_remote_sep *rsep = seps->data;
653 struct a2dp_sep *sep;
654 struct avdtp_service_capability *cap;
655 struct avdtp_stream *stream;
656 uint8_t type, seid, configured = 0, lock = 0;
657 GSList *cl;
658
659 type = avdtp_get_type(rsep);
660
661 if (type != AVDTP_SEP_TYPE_SINK &&
662 type != AVDTP_SEP_TYPE_SOURCE)
663 continue;
664
665 cap = avdtp_get_codec(rsep);
666
667 if (cap->category != AVDTP_MEDIA_CODEC)
668 continue;
669
670 seid = avdtp_get_seid(rsep);
671
672 if (client->seid != 0 && client->seid != seid)
673 continue;
674
675 stream = avdtp_get_stream(rsep);
676 if (stream) {
677 configured = 1;
678 if (client->seid == seid)
679 cap = avdtp_stream_get_codec(stream);
680 }
681
682 for (cl = clients; cl; cl = cl->next) {
683 struct unix_client *c = cl->data;
684 struct a2dp_data *ca2dp = &c->d.a2dp;
685
686 if (ca2dp->session == session && c->seid == seid) {
687 lock = c->lock;
688 break;
689 }
690 }
691
692 sep = a2dp_get_sep(session, stream);
693 if (sep && a2dp_sep_get_lock(sep))
694 lock = BT_WRITE_LOCK;
695
696 a2dp_append_codec(rsp, cap, seid, type, configured, lock);
697 }
698
699 unix_ipc_sendmsg(client, &rsp->h);
700
701 return;
702
703 failed:
704 error("discovery failed");
705 unix_ipc_error(client, BT_GET_CAPABILITIES, EIO);
706
707 if (a2dp->sep) {
708 a2dp_sep_unlock(a2dp->sep, a2dp->session);
709 a2dp->sep = NULL;
710 }
711
712 avdtp_unref(a2dp->session);
713 a2dp->session = NULL;
714 a2dp->stream = NULL;
715 }
716
a2dp_config_complete(struct avdtp * session,struct a2dp_sep * sep,struct avdtp_stream * stream,struct avdtp_error * err,void * user_data)717 static void a2dp_config_complete(struct avdtp *session, struct a2dp_sep *sep,
718 struct avdtp_stream *stream,
719 struct avdtp_error *err,
720 void *user_data)
721 {
722 struct unix_client *client = user_data;
723 char buf[BT_SUGGESTED_BUFFER_SIZE];
724 struct bt_set_configuration_rsp *rsp = (void *) buf;
725 struct a2dp_data *a2dp = &client->d.a2dp;
726 uint16_t imtu, omtu;
727 GSList *caps;
728
729 client->req_id = 0;
730
731 if (err)
732 goto failed;
733
734 memset(buf, 0, sizeof(buf));
735
736 if (!stream)
737 goto failed;
738
739 if (client->cb_id > 0)
740 avdtp_stream_remove_cb(a2dp->session, a2dp->stream,
741 client->cb_id);
742
743 a2dp->sep = sep;
744 a2dp->stream = stream;
745
746 if (!avdtp_stream_get_transport(stream, &client->data_fd, &imtu, &omtu,
747 &caps)) {
748 error("Unable to get stream transport");
749 goto failed;
750 }
751
752 rsp->h.type = BT_RESPONSE;
753 rsp->h.name = BT_SET_CONFIGURATION;
754 rsp->h.length = sizeof(*rsp);
755
756 /* FIXME: Use imtu when fd_opt is CFG_FD_OPT_READ */
757 rsp->link_mtu = omtu;
758
759 unix_ipc_sendmsg(client, &rsp->h);
760
761 client->cb_id = avdtp_stream_add_cb(session, stream,
762 stream_state_changed, client);
763
764 return;
765
766 failed:
767 error("config failed");
768
769 unix_ipc_error(client, BT_SET_CONFIGURATION, EIO);
770
771 avdtp_unref(a2dp->session);
772
773 a2dp->session = NULL;
774 a2dp->stream = NULL;
775 a2dp->sep = NULL;
776 }
777
a2dp_resume_complete(struct avdtp * session,struct avdtp_error * err,void * user_data)778 static void a2dp_resume_complete(struct avdtp *session,
779 struct avdtp_error *err, void *user_data)
780 {
781 struct unix_client *client = user_data;
782 char buf[BT_SUGGESTED_BUFFER_SIZE];
783 struct bt_start_stream_rsp *rsp = (void *) buf;
784 struct bt_new_stream_ind *ind = (void *) buf;
785 struct a2dp_data *a2dp = &client->d.a2dp;
786
787 if (err)
788 goto failed;
789
790 memset(buf, 0, sizeof(buf));
791 rsp->h.type = BT_RESPONSE;
792 rsp->h.name = BT_START_STREAM;
793 rsp->h.length = sizeof(*rsp);
794
795 unix_ipc_sendmsg(client, &rsp->h);
796
797 memset(buf, 0, sizeof(buf));
798 ind->h.type = BT_RESPONSE;
799 ind->h.name = BT_NEW_STREAM;
800 rsp->h.length = sizeof(*ind);
801
802 unix_ipc_sendmsg(client, &ind->h);
803
804 if (unix_sendmsg_fd(client->sock, client->data_fd) < 0) {
805 error("unix_sendmsg_fd: %s(%d)", strerror(errno), errno);
806 goto failed;
807 }
808
809 return;
810
811 failed:
812 error("resume failed");
813
814 unix_ipc_error(client, BT_START_STREAM, EIO);
815
816 if (client->cb_id > 0) {
817 avdtp_stream_remove_cb(a2dp->session, a2dp->stream,
818 client->cb_id);
819 client->cb_id = 0;
820 }
821
822 if (a2dp->sep) {
823 a2dp_sep_unlock(a2dp->sep, a2dp->session);
824 a2dp->sep = NULL;
825 }
826
827 avdtp_unref(a2dp->session);
828 a2dp->session = NULL;
829 a2dp->stream = NULL;
830 }
831
a2dp_suspend_complete(struct avdtp * session,struct avdtp_error * err,void * user_data)832 static void a2dp_suspend_complete(struct avdtp *session,
833 struct avdtp_error *err, void *user_data)
834 {
835 struct unix_client *client = user_data;
836 char buf[BT_SUGGESTED_BUFFER_SIZE];
837 struct bt_stop_stream_rsp *rsp = (void *) buf;
838
839 if (err)
840 goto failed;
841
842 memset(buf, 0, sizeof(buf));
843 rsp->h.type = BT_RESPONSE;
844 rsp->h.name = BT_STOP_STREAM;
845 rsp->h.length = sizeof(*rsp);
846
847 unix_ipc_sendmsg(client, &rsp->h);
848
849 return;
850
851 failed:
852 error("suspend failed");
853
854 unix_ipc_error(client, BT_STOP_STREAM, EIO);
855 }
856
start_discovery(struct audio_device * dev,struct unix_client * client)857 static void start_discovery(struct audio_device *dev, struct unix_client *client)
858 {
859 struct a2dp_data *a2dp;
860 int err = 0;
861
862 switch (client->type) {
863 case TYPE_SINK:
864 case TYPE_SOURCE:
865 a2dp = &client->d.a2dp;
866
867 if (!a2dp->session)
868 a2dp->session = avdtp_get(&dev->src, &dev->dst);
869
870 if (!a2dp->session) {
871 error("Unable to get a session");
872 goto failed;
873 }
874
875 err = avdtp_discover(a2dp->session, a2dp_discovery_complete,
876 client);
877 if (err) {
878 if (a2dp->session) {
879 avdtp_unref(a2dp->session);
880 a2dp->session = NULL;
881 }
882 goto failed;
883 }
884 break;
885
886 case TYPE_HEADSET:
887 case TYPE_GATEWAY:
888 headset_discovery_complete(dev, client);
889 break;
890
891 default:
892 error("No known services for device");
893 goto failed;
894 }
895
896 client->dev = dev;
897
898 return;
899
900 failed:
901 unix_ipc_error(client, BT_GET_CAPABILITIES, err ? : EIO);
902 }
903
open_complete(struct audio_device * dev,void * user_data)904 static void open_complete(struct audio_device *dev, void *user_data)
905 {
906 struct unix_client *client = user_data;
907 char buf[BT_SUGGESTED_BUFFER_SIZE];
908 struct bt_open_rsp *rsp = (void *) buf;
909
910 memset(buf, 0, sizeof(buf));
911
912 rsp->h.type = BT_RESPONSE;
913 rsp->h.name = BT_OPEN;
914 rsp->h.length = sizeof(*rsp);
915
916 ba2str(&dev->src, rsp->source);
917 ba2str(&dev->dst, rsp->destination);
918 strncpy(rsp->object, dev->path, sizeof(rsp->object));
919
920 unix_ipc_sendmsg(client, &rsp->h);
921 }
922
start_open(struct audio_device * dev,struct unix_client * client)923 static void start_open(struct audio_device *dev, struct unix_client *client)
924 {
925 struct a2dp_data *a2dp;
926 struct headset_data *hs;
927 struct avdtp_remote_sep *rsep;
928 gboolean unref_avdtp_on_fail = FALSE;
929
930 switch (client->type) {
931 case TYPE_SINK:
932 case TYPE_SOURCE:
933 a2dp = &client->d.a2dp;
934
935 if (!a2dp->session) {
936 a2dp->session = avdtp_get(&dev->src, &dev->dst);
937 unref_avdtp_on_fail = TRUE;
938 }
939
940 if (!a2dp->session) {
941 error("Unable to get a session");
942 goto failed;
943 }
944
945 if (a2dp->sep) {
946 error("Client already has an opened session");
947 goto failed;
948 }
949
950 rsep = avdtp_get_remote_sep(a2dp->session, client->seid);
951 if (!rsep) {
952 error("Invalid seid %d", client->seid);
953 goto failed;
954 }
955
956 a2dp->sep = a2dp_get(a2dp->session, rsep);
957 if (!a2dp->sep) {
958 error("seid %d not available or locked", client->seid);
959 goto failed;
960 }
961
962 if (!a2dp_sep_lock(a2dp->sep, a2dp->session)) {
963 error("Unable to open seid %d", client->seid);
964 a2dp->sep = NULL;
965 goto failed;
966 }
967
968 break;
969
970 case TYPE_HEADSET:
971 hs = &client->d.hs;
972
973 if (hs->locked) {
974 error("Client already has an opened session");
975 goto failed;
976 }
977
978 hs->locked = headset_lock(dev, client->lock);
979 if (!hs->locked) {
980 error("Unable to open seid %d", client->seid);
981 goto failed;
982 }
983 break;
984
985 case TYPE_GATEWAY:
986 break;
987 default:
988 error("No known services for device");
989 goto failed;
990 }
991
992 client->dev = dev;
993
994 open_complete(dev, client);
995
996 return;
997
998 failed:
999 if (unref_avdtp_on_fail && a2dp->session) {
1000 avdtp_unref(a2dp->session);
1001 a2dp->session = NULL;
1002 }
1003 unix_ipc_error(client, BT_OPEN, EINVAL);
1004 }
1005
start_config(struct audio_device * dev,struct unix_client * client)1006 static void start_config(struct audio_device *dev, struct unix_client *client)
1007 {
1008 struct a2dp_data *a2dp;
1009 struct headset_data *hs;
1010 unsigned int id;
1011
1012 switch (client->type) {
1013 case TYPE_SINK:
1014 case TYPE_SOURCE:
1015 a2dp = &client->d.a2dp;
1016
1017 if (!a2dp->session)
1018 a2dp->session = avdtp_get(&dev->src, &dev->dst);
1019
1020 if (!a2dp->session) {
1021 error("Unable to get a session");
1022 goto failed;
1023 }
1024
1025 if (!a2dp->sep) {
1026 error("seid %d not opened", client->seid);
1027 goto failed;
1028 }
1029
1030 id = a2dp_config(a2dp->session, a2dp->sep, a2dp_config_complete,
1031 client->caps, client);
1032 client->cancel = a2dp_cancel;
1033 break;
1034
1035 case TYPE_HEADSET:
1036 hs = &client->d.hs;
1037
1038 if (!hs->locked) {
1039 error("seid %d not opened", client->seid);
1040 goto failed;
1041 }
1042
1043 id = headset_config_stream(dev, TRUE, headset_setup_complete,
1044 client);
1045 client->cancel = headset_cancel_stream;
1046 break;
1047 case TYPE_GATEWAY:
1048 if (gateway_config_stream(dev, gateway_setup_complete, client) >= 0) {
1049 client->cancel = gateway_cancel_stream;
1050 id = 1;
1051 } else
1052 id = 0;
1053 break;
1054
1055 default:
1056 error("No known services for device");
1057 goto failed;
1058 }
1059
1060 if (id == 0) {
1061 error("config failed");
1062 goto failed;
1063 }
1064
1065 client->req_id = id;
1066 g_slist_free(client->caps);
1067 client->caps = NULL;
1068
1069 return;
1070
1071 failed:
1072 unix_ipc_error(client, BT_SET_CONFIGURATION, EIO);
1073 }
1074
start_resume(struct audio_device * dev,struct unix_client * client)1075 static void start_resume(struct audio_device *dev, struct unix_client *client)
1076 {
1077 struct a2dp_data *a2dp = NULL;
1078 struct headset_data *hs;
1079 unsigned int id;
1080 struct avdtp *session = NULL;
1081
1082 switch (client->type) {
1083 case TYPE_SINK:
1084 case TYPE_SOURCE:
1085 a2dp = &client->d.a2dp;
1086
1087 if (!a2dp->sep) {
1088 error("seid not opened");
1089 goto failed;
1090 }
1091
1092 if (!a2dp->session) {
1093 session = avdtp_get(&dev->src, &dev->dst);
1094 if (!session) {
1095 error("Unable to get a session");
1096 goto failed;
1097 }
1098 a2dp->session = session;
1099 }
1100
1101 id = a2dp_resume(a2dp->session, a2dp->sep, a2dp_resume_complete,
1102 client);
1103 client->cancel = a2dp_cancel;
1104
1105 break;
1106
1107 case TYPE_HEADSET:
1108 hs = &client->d.hs;
1109
1110 if (!hs->locked) {
1111 error("seid not opened");
1112 goto failed;
1113 }
1114
1115 id = headset_request_stream(dev, headset_resume_complete,
1116 client);
1117 client->cancel = headset_cancel_stream;
1118 break;
1119
1120 case TYPE_GATEWAY:
1121 if (gateway_request_stream(dev, gateway_resume_complete, client))
1122 id = 1;
1123 else
1124 id = 0;
1125 client->cancel = gateway_cancel_stream;
1126 break;
1127
1128 default:
1129 error("No known services for device");
1130 goto failed;
1131 }
1132
1133 if (id == 0) {
1134 error("start_resume: resume failed");
1135 goto failed;
1136 }
1137
1138 client->req_id = id;
1139
1140 return;
1141
1142 failed:
1143 if (session) {
1144 avdtp_unref(session);
1145 a2dp->session = NULL;
1146 }
1147
1148 unix_ipc_error(client, BT_START_STREAM, EIO);
1149 }
1150
start_suspend(struct audio_device * dev,struct unix_client * client)1151 static void start_suspend(struct audio_device *dev, struct unix_client *client)
1152 {
1153 struct a2dp_data *a2dp = NULL;
1154 struct headset_data *hs;
1155 unsigned int id;
1156 struct avdtp *session = NULL;
1157
1158 switch (client->type) {
1159 case TYPE_SINK:
1160 case TYPE_SOURCE:
1161 a2dp = &client->d.a2dp;
1162
1163 if (!a2dp->sep) {
1164 error("seid not opened");
1165 goto failed;
1166 }
1167
1168 if (!a2dp->session) {
1169 session = avdtp_get(&dev->src, &dev->dst);
1170 if (!session) {
1171 error("Unable to get a session");
1172 goto failed;
1173 }
1174 a2dp->session = session;
1175 }
1176
1177 if (!a2dp->sep) {
1178 error("Unable to get a sep");
1179 goto failed;
1180 }
1181
1182 id = a2dp_suspend(a2dp->session, a2dp->sep,
1183 a2dp_suspend_complete, client);
1184 client->cancel = a2dp_cancel;
1185 break;
1186
1187 case TYPE_HEADSET:
1188 hs = &client->d.hs;
1189
1190 if (!hs->locked) {
1191 error("seid not opened");
1192 goto failed;
1193 }
1194
1195 id = headset_suspend_stream(dev, headset_suspend_complete,
1196 client);
1197 client->cancel = headset_cancel_stream;
1198 break;
1199
1200 case TYPE_GATEWAY:
1201 gateway_suspend_stream(dev);
1202 client->cancel = gateway_cancel_stream;
1203 headset_suspend_complete(dev, client);
1204 id = 1;
1205 break;
1206
1207 default:
1208 error("No known services for device");
1209 goto failed;
1210 }
1211
1212 if (id == 0) {
1213 error("suspend failed");
1214 goto failed;
1215 }
1216
1217 return;
1218
1219 failed:
1220 if (session) {
1221 avdtp_unref(session);
1222 a2dp->session = NULL;
1223 }
1224
1225 unix_ipc_error(client, BT_STOP_STREAM, EIO);
1226 }
1227
close_complete(struct audio_device * dev,void * user_data)1228 static void close_complete(struct audio_device *dev, void *user_data)
1229 {
1230 struct unix_client *client = user_data;
1231 char buf[BT_SUGGESTED_BUFFER_SIZE];
1232 struct bt_close_rsp *rsp = (void *) buf;
1233
1234 memset(buf, 0, sizeof(buf));
1235
1236 rsp->h.type = BT_RESPONSE;
1237 rsp->h.name = BT_CLOSE;
1238 rsp->h.length = sizeof(*rsp);
1239
1240 unix_ipc_sendmsg(client, &rsp->h);
1241
1242 return;
1243 }
1244
start_close(struct audio_device * dev,struct unix_client * client,gboolean reply)1245 static void start_close(struct audio_device *dev, struct unix_client *client,
1246 gboolean reply)
1247 {
1248 struct a2dp_data *a2dp;
1249 struct headset_data *hs;
1250
1251 if (!client->dev)
1252 goto failed;
1253
1254 switch (client->type) {
1255 case TYPE_HEADSET:
1256 hs = &client->d.hs;
1257
1258 if (client->dev && hs->locked) {
1259 headset_unlock(client->dev, client->lock);
1260 hs->locked = FALSE;
1261 }
1262 break;
1263 case TYPE_GATEWAY:
1264 break;
1265 case TYPE_SOURCE:
1266 case TYPE_SINK:
1267 a2dp = &client->d.a2dp;
1268
1269 if (client->cb_id > 0) {
1270 avdtp_stream_remove_cb(a2dp->session, a2dp->stream,
1271 client->cb_id);
1272 client->cb_id = 0;
1273 }
1274 if (a2dp->sep) {
1275 a2dp_sep_unlock(a2dp->sep, a2dp->session);
1276 a2dp->sep = NULL;
1277 }
1278 if (a2dp->session) {
1279 avdtp_unref(a2dp->session);
1280 a2dp->session = NULL;
1281 }
1282 a2dp->stream = NULL;
1283 break;
1284 default:
1285 error("No known services for device");
1286 goto failed;
1287 }
1288
1289 if (!reply)
1290 return;
1291
1292 close_complete(dev, client);
1293 client->dev = NULL;
1294
1295 return;
1296
1297 failed:
1298 if (reply)
1299 unix_ipc_error(client, BT_STOP_STREAM, EINVAL);
1300 }
1301
handle_getcapabilities_req(struct unix_client * client,struct bt_get_capabilities_req * req)1302 static void handle_getcapabilities_req(struct unix_client *client,
1303 struct bt_get_capabilities_req *req)
1304 {
1305 struct audio_device *dev;
1306 bdaddr_t src, dst;
1307 int err = EIO;
1308 const char *interface;
1309
1310 if (!check_nul(req->source) || !check_nul(req->destination) ||
1311 !check_nul(req->object)) {
1312 err = EINVAL;
1313 goto failed;
1314 }
1315
1316 str2ba(req->source, &src);
1317 str2ba(req->destination, &dst);
1318
1319 if (!manager_find_device(req->object, &src, &dst, NULL, FALSE))
1320 goto failed;
1321
1322 if (req->transport == BT_CAPABILITIES_TRANSPORT_SCO)
1323 interface = AUDIO_HEADSET_INTERFACE;
1324 else if (req->transport == BT_CAPABILITIES_TRANSPORT_A2DP)
1325 interface = AUDIO_SINK_INTERFACE;
1326 else
1327 interface = client->interface;
1328
1329 dev = manager_find_device(req->object, &src, &dst, interface, TRUE);
1330 if (!dev && (req->flags & BT_FLAG_AUTOCONNECT))
1331 dev = manager_find_device(req->object, &src, &dst,
1332 interface, FALSE);
1333
1334 if (!dev) {
1335 if (req->transport == BT_CAPABILITIES_TRANSPORT_SCO)
1336 interface = AUDIO_GATEWAY_INTERFACE;
1337 else if (req->transport == BT_CAPABILITIES_TRANSPORT_A2DP)
1338 interface = AUDIO_SOURCE_INTERFACE;
1339 else
1340 interface = NULL;
1341 dev = manager_find_device(req->object, &src, &dst,
1342 interface, TRUE);
1343 if (!dev && (req->flags & BT_FLAG_AUTOCONNECT))
1344 dev = manager_find_device(req->object, &src, &dst,
1345 interface, FALSE);
1346 }
1347
1348 if (!dev) {
1349 error("Unable to find a matching device");
1350 goto failed;
1351 }
1352
1353 client->type = select_service(dev, interface);
1354 if (client->type == TYPE_NONE) {
1355 error("No matching service found");
1356 goto failed;
1357 }
1358
1359 if (g_strcmp0(interface, client->interface) != 0) {
1360 g_free(client->interface);
1361 client->interface = g_strdup(interface);
1362 }
1363
1364 client->seid = req->seid;
1365
1366 start_discovery(dev, client);
1367
1368 return;
1369
1370 failed:
1371 unix_ipc_error(client, BT_GET_CAPABILITIES, err);
1372 }
1373
handle_sco_open(struct unix_client * client,struct bt_open_req * req)1374 static int handle_sco_open(struct unix_client *client, struct bt_open_req *req)
1375 {
1376 if (!client->interface)
1377 client->interface = g_strdup(AUDIO_HEADSET_INTERFACE);
1378 else if (!g_str_equal(client->interface, AUDIO_HEADSET_INTERFACE) &&
1379 !g_str_equal(client->interface, AUDIO_GATEWAY_INTERFACE))
1380 return -EIO;
1381
1382 DBG("open sco - object=%s source=%s destination=%s lock=%s%s",
1383 strcmp(req->object, "") ? req->object : "ANY",
1384 strcmp(req->source, "") ? req->source : "ANY",
1385 strcmp(req->destination, "") ? req->destination : "ANY",
1386 req->lock & BT_READ_LOCK ? "read" : "",
1387 req->lock & BT_WRITE_LOCK ? "write" : "");
1388
1389 return 0;
1390 }
1391
handle_a2dp_open(struct unix_client * client,struct bt_open_req * req)1392 static int handle_a2dp_open(struct unix_client *client, struct bt_open_req *req)
1393 {
1394 if (!client->interface)
1395 /* FIXME: are we treating a sink or a source? */
1396 client->interface = g_strdup(AUDIO_SINK_INTERFACE);
1397 else if (!g_str_equal(client->interface, AUDIO_SINK_INTERFACE) &&
1398 !g_str_equal(client->interface, AUDIO_SOURCE_INTERFACE))
1399 return -EIO;
1400
1401 DBG("open a2dp - object=%s source=%s destination=%s lock=%s%s",
1402 strcmp(req->object, "") ? req->object : "ANY",
1403 strcmp(req->source, "") ? req->source : "ANY",
1404 strcmp(req->destination, "") ? req->destination : "ANY",
1405 req->lock & BT_READ_LOCK ? "read" : "",
1406 req->lock & BT_WRITE_LOCK ? "write" : "");
1407
1408 return 0;
1409 }
1410
handle_open_req(struct unix_client * client,struct bt_open_req * req)1411 static void handle_open_req(struct unix_client *client, struct bt_open_req *req)
1412 {
1413 struct audio_device *dev;
1414 bdaddr_t src, dst;
1415 int err = 0;
1416
1417 if (!check_nul(req->source) || !check_nul(req->destination) ||
1418 !check_nul(req->object)) {
1419 err = EINVAL;
1420 goto failed;
1421 }
1422
1423 str2ba(req->source, &src);
1424 str2ba(req->destination, &dst);
1425
1426 if (req->seid > BT_A2DP_SEID_RANGE) {
1427 err = handle_sco_open(client, req);
1428 if (err < 0) {
1429 err = -err;
1430 goto failed;
1431 }
1432 } else {
1433 err = handle_a2dp_open(client, req);
1434 if (err < 0) {
1435 err = -err;
1436 goto failed;
1437 }
1438 }
1439
1440 if (!manager_find_device(req->object, &src, &dst, NULL, FALSE))
1441 goto failed;
1442
1443 dev = manager_find_device(req->object, &src, &dst, client->interface,
1444 TRUE);
1445 if (!dev)
1446 dev = manager_find_device(req->object, &src, &dst,
1447 client->interface, FALSE);
1448
1449 if (!dev)
1450 goto failed;
1451
1452 client->seid = req->seid;
1453 client->lock = req->lock;
1454
1455 start_open(dev, client);
1456
1457 return;
1458
1459 failed:
1460 unix_ipc_error(client, BT_OPEN, err ? : EIO);
1461 }
1462
handle_sco_transport(struct unix_client * client,struct bt_set_configuration_req * req)1463 static int handle_sco_transport(struct unix_client *client,
1464 struct bt_set_configuration_req *req)
1465 {
1466 struct audio_device *dev = client->dev;
1467
1468 if (!client->interface) {
1469 if (dev->headset)
1470 client->interface = g_strdup(AUDIO_HEADSET_INTERFACE);
1471 else if (dev->gateway)
1472 client->interface = g_strdup(AUDIO_GATEWAY_INTERFACE);
1473 else
1474 return -EIO;
1475 } else if (!g_str_equal(client->interface, AUDIO_HEADSET_INTERFACE) &&
1476 !g_str_equal(client->interface, AUDIO_GATEWAY_INTERFACE))
1477 return -EIO;
1478
1479 return 0;
1480 }
1481
handle_a2dp_transport(struct unix_client * client,struct bt_set_configuration_req * req)1482 static int handle_a2dp_transport(struct unix_client *client,
1483 struct bt_set_configuration_req *req)
1484 {
1485 struct avdtp_service_capability *media_transport, *media_codec;
1486 struct sbc_codec_cap sbc_cap;
1487 struct mpeg_codec_cap mpeg_cap;
1488
1489 if (!client->interface)
1490 /* FIXME: are we treating a sink or a source? */
1491 client->interface = g_strdup(AUDIO_SINK_INTERFACE);
1492 else if (!g_str_equal(client->interface, AUDIO_SINK_INTERFACE) &&
1493 !g_str_equal(client->interface, AUDIO_SOURCE_INTERFACE))
1494 return -EIO;
1495
1496 if (client->caps) {
1497 g_slist_foreach(client->caps, (GFunc) g_free, NULL);
1498 g_slist_free(client->caps);
1499 client->caps = NULL;
1500 }
1501
1502 media_transport = avdtp_service_cap_new(AVDTP_MEDIA_TRANSPORT,
1503 NULL, 0);
1504
1505 client->caps = g_slist_append(client->caps, media_transport);
1506
1507 if (req->codec.type == BT_A2DP_MPEG12_SINK ||
1508 req->codec.type == BT_A2DP_MPEG12_SOURCE) {
1509 mpeg_capabilities_t *mpeg = (void *) &req->codec;
1510
1511 memset(&mpeg_cap, 0, sizeof(mpeg_cap));
1512
1513 mpeg_cap.cap.media_type = AVDTP_MEDIA_TYPE_AUDIO;
1514 mpeg_cap.cap.media_codec_type = A2DP_CODEC_MPEG12;
1515 mpeg_cap.channel_mode = mpeg->channel_mode;
1516 mpeg_cap.crc = mpeg->crc;
1517 mpeg_cap.layer = mpeg->layer;
1518 mpeg_cap.frequency = mpeg->frequency;
1519 mpeg_cap.mpf = mpeg->mpf;
1520 mpeg_cap.bitrate = mpeg->bitrate;
1521
1522 media_codec = avdtp_service_cap_new(AVDTP_MEDIA_CODEC, &mpeg_cap,
1523 sizeof(mpeg_cap));
1524
1525 print_mpeg12(&mpeg_cap);
1526 } else if (req->codec.type == BT_A2DP_SBC_SINK ||
1527 req->codec.type == BT_A2DP_SBC_SOURCE) {
1528 sbc_capabilities_t *sbc = (void *) &req->codec;
1529
1530 memset(&sbc_cap, 0, sizeof(sbc_cap));
1531
1532 sbc_cap.cap.media_type = AVDTP_MEDIA_TYPE_AUDIO;
1533 sbc_cap.cap.media_codec_type = A2DP_CODEC_SBC;
1534 sbc_cap.channel_mode = sbc->channel_mode;
1535 sbc_cap.frequency = sbc->frequency;
1536 sbc_cap.allocation_method = sbc->allocation_method;
1537 sbc_cap.subbands = sbc->subbands;
1538 sbc_cap.block_length = sbc->block_length;
1539 sbc_cap.min_bitpool = sbc->min_bitpool;
1540 sbc_cap.max_bitpool = sbc->max_bitpool;
1541
1542 media_codec = avdtp_service_cap_new(AVDTP_MEDIA_CODEC, &sbc_cap,
1543 sizeof(sbc_cap));
1544
1545 print_sbc(&sbc_cap);
1546 } else
1547 return -EINVAL;
1548
1549 client->caps = g_slist_append(client->caps, media_codec);
1550
1551 return 0;
1552 }
1553
handle_setconfiguration_req(struct unix_client * client,struct bt_set_configuration_req * req)1554 static void handle_setconfiguration_req(struct unix_client *client,
1555 struct bt_set_configuration_req *req)
1556 {
1557 int err = 0;
1558
1559 if (req->codec.seid != client->seid) {
1560 error("Unable to set configuration: seid %d not opened",
1561 req->codec.seid);
1562 goto failed;
1563 }
1564
1565 if (!client->dev)
1566 goto failed;
1567
1568 if (req->codec.transport == BT_CAPABILITIES_TRANSPORT_SCO) {
1569 err = handle_sco_transport(client, req);
1570 if (err < 0) {
1571 err = -err;
1572 goto failed;
1573 }
1574 } else if (req->codec.transport == BT_CAPABILITIES_TRANSPORT_A2DP) {
1575 err = handle_a2dp_transport(client, req);
1576 if (err < 0) {
1577 err = -err;
1578 goto failed;
1579 }
1580 }
1581
1582 start_config(client->dev, client);
1583
1584 return;
1585
1586 failed:
1587 unix_ipc_error(client, BT_SET_CONFIGURATION, err ? : EIO);
1588 }
1589
handle_streamstart_req(struct unix_client * client,struct bt_start_stream_req * req)1590 static void handle_streamstart_req(struct unix_client *client,
1591 struct bt_start_stream_req *req)
1592 {
1593 if (!client->dev)
1594 goto failed;
1595
1596 start_resume(client->dev, client);
1597
1598 return;
1599
1600 failed:
1601 unix_ipc_error(client, BT_START_STREAM, EIO);
1602 }
1603
handle_streamstop_req(struct unix_client * client,struct bt_stop_stream_req * req)1604 static void handle_streamstop_req(struct unix_client *client,
1605 struct bt_stop_stream_req *req)
1606 {
1607 if (!client->dev)
1608 goto failed;
1609
1610 start_suspend(client->dev, client);
1611
1612 return;
1613
1614 failed:
1615 unix_ipc_error(client, BT_STOP_STREAM, EIO);
1616 }
1617
handle_close_req(struct unix_client * client,struct bt_close_req * req)1618 static void handle_close_req(struct unix_client *client,
1619 struct bt_close_req *req)
1620 {
1621 if (!client->dev)
1622 goto failed;
1623
1624 start_close(client->dev, client, TRUE);
1625
1626 return;
1627
1628 failed:
1629 unix_ipc_error(client, BT_CLOSE, EIO);
1630 }
1631
handle_control_req(struct unix_client * client,struct bt_control_req * req)1632 static void handle_control_req(struct unix_client *client,
1633 struct bt_control_req *req)
1634 {
1635 /* FIXME: really implement that */
1636 char buf[BT_SUGGESTED_BUFFER_SIZE];
1637 struct bt_set_configuration_rsp *rsp = (void *) buf;
1638
1639 memset(buf, 0, sizeof(buf));
1640 rsp->h.type = BT_RESPONSE;
1641 rsp->h.name = BT_CONTROL;
1642 rsp->h.length = sizeof(*rsp);
1643
1644 unix_ipc_sendmsg(client, &rsp->h);
1645 }
1646
handle_delay_report_req(struct unix_client * client,struct bt_delay_report_req * req)1647 static void handle_delay_report_req(struct unix_client *client,
1648 struct bt_delay_report_req *req)
1649 {
1650 char buf[BT_SUGGESTED_BUFFER_SIZE];
1651 struct bt_set_configuration_rsp *rsp = (void *) buf;
1652 struct a2dp_data *a2dp;
1653 int err;
1654
1655 if (!client->dev) {
1656 err = -ENODEV;
1657 goto failed;
1658 }
1659
1660 switch (client->type) {
1661 case TYPE_HEADSET:
1662 case TYPE_GATEWAY:
1663 err = -EINVAL;
1664 goto failed;
1665 case TYPE_SOURCE:
1666 case TYPE_SINK:
1667 a2dp = &client->d.a2dp;
1668 if (a2dp->session && a2dp->stream) {
1669 err = avdtp_delay_report(a2dp->session, a2dp->stream,
1670 req->delay);
1671 if (err < 0)
1672 goto failed;
1673 } else {
1674 err = -EINVAL;
1675 goto failed;
1676 }
1677 break;
1678 default:
1679 error("No known services for device");
1680 err = -EINVAL;
1681 goto failed;
1682 }
1683
1684 memset(buf, 0, sizeof(buf));
1685 rsp->h.type = BT_RESPONSE;
1686 rsp->h.name = BT_DELAY_REPORT;
1687 rsp->h.length = sizeof(*rsp);
1688
1689 unix_ipc_sendmsg(client, &rsp->h);
1690
1691 return;
1692
1693 failed:
1694 unix_ipc_error(client, BT_DELAY_REPORT, -err);
1695 }
1696
client_cb(GIOChannel * chan,GIOCondition cond,gpointer data)1697 static gboolean client_cb(GIOChannel *chan, GIOCondition cond, gpointer data)
1698 {
1699 char buf[BT_SUGGESTED_BUFFER_SIZE];
1700 bt_audio_msg_header_t *msghdr = (void *) buf;
1701 struct unix_client *client = data;
1702 int len;
1703 const char *type, *name;
1704
1705 if (cond & G_IO_NVAL)
1706 return FALSE;
1707
1708 if (cond & (G_IO_HUP | G_IO_ERR)) {
1709 DBG("Unix client disconnected (fd=%d)", client->sock);
1710
1711 goto failed;
1712 }
1713
1714 memset(buf, 0, sizeof(buf));
1715
1716 len = recv(client->sock, buf, sizeof(buf), 0);
1717 if (len < 0) {
1718 error("recv: %s (%d)", strerror(errno), errno);
1719 goto failed;
1720 }
1721
1722 type = bt_audio_strtype(msghdr->type);
1723 name = bt_audio_strname(msghdr->name);
1724
1725 DBG("Audio API: %s <- %s", type, name);
1726
1727 if (msghdr->length != len) {
1728 error("Invalid message: length mismatch");
1729 goto failed;
1730 }
1731
1732 switch (msghdr->name) {
1733 case BT_GET_CAPABILITIES:
1734 handle_getcapabilities_req(client,
1735 (struct bt_get_capabilities_req *) msghdr);
1736 break;
1737 case BT_OPEN:
1738 handle_open_req(client,
1739 (struct bt_open_req *) msghdr);
1740 break;
1741 case BT_SET_CONFIGURATION:
1742 handle_setconfiguration_req(client,
1743 (struct bt_set_configuration_req *) msghdr);
1744 break;
1745 case BT_START_STREAM:
1746 handle_streamstart_req(client,
1747 (struct bt_start_stream_req *) msghdr);
1748 break;
1749 case BT_STOP_STREAM:
1750 handle_streamstop_req(client,
1751 (struct bt_stop_stream_req *) msghdr);
1752 break;
1753 case BT_CLOSE:
1754 handle_close_req(client,
1755 (struct bt_close_req *) msghdr);
1756 break;
1757 case BT_CONTROL:
1758 handle_control_req(client,
1759 (struct bt_control_req *) msghdr);
1760 break;
1761 case BT_DELAY_REPORT:
1762 handle_delay_report_req(client,
1763 (struct bt_delay_report_req *) msghdr);
1764 break;
1765 default:
1766 error("Audio API: received unexpected message name %d",
1767 msghdr->name);
1768 }
1769
1770 return TRUE;
1771
1772 failed:
1773 clients = g_slist_remove(clients, client);
1774 start_close(client->dev, client, FALSE);
1775 client_free(client);
1776 return FALSE;
1777 }
1778
server_cb(GIOChannel * chan,GIOCondition cond,gpointer data)1779 static gboolean server_cb(GIOChannel *chan, GIOCondition cond, gpointer data)
1780 {
1781 struct sockaddr_un addr;
1782 socklen_t addrlen;
1783 int sk, cli_sk;
1784 struct unix_client *client;
1785 GIOChannel *io;
1786
1787 if (cond & G_IO_NVAL)
1788 return FALSE;
1789
1790 if (cond & (G_IO_HUP | G_IO_ERR)) {
1791 g_io_channel_shutdown(chan, TRUE, NULL);
1792 return FALSE;
1793 }
1794
1795 sk = g_io_channel_unix_get_fd(chan);
1796
1797 memset(&addr, 0, sizeof(addr));
1798 addrlen = sizeof(addr);
1799
1800 cli_sk = accept(sk, (struct sockaddr *) &addr, &addrlen);
1801 if (cli_sk < 0) {
1802 error("accept: %s (%d)", strerror(errno), errno);
1803 return TRUE;
1804 }
1805
1806 DBG("Accepted new client connection on unix socket (fd=%d)", cli_sk);
1807 set_nonblocking(cli_sk);
1808
1809 client = g_new0(struct unix_client, 1);
1810 client->sock = cli_sk;
1811 clients = g_slist_append(clients, client);
1812
1813 io = g_io_channel_unix_new(cli_sk);
1814 g_io_add_watch(io, G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
1815 client_cb, client);
1816 g_io_channel_unref(io);
1817
1818 return TRUE;
1819 }
1820
unix_device_removed(struct audio_device * dev)1821 void unix_device_removed(struct audio_device *dev)
1822 {
1823 GSList *l;
1824
1825 DBG("unix_device_removed(%p)", dev);
1826
1827 l = clients;
1828 while (l) {
1829 struct unix_client *client = l->data;
1830
1831 l = l->next;
1832
1833 if (client->dev == dev) {
1834 clients = g_slist_remove(clients, client);
1835 start_close(client->dev, client, FALSE);
1836 client_free(client);
1837 }
1838 }
1839 }
1840
unix_delay_report(struct audio_device * dev,uint8_t seid,uint16_t delay)1841 void unix_delay_report(struct audio_device *dev, uint8_t seid, uint16_t delay)
1842 {
1843 GSList *l;
1844 struct bt_delay_report_ind ind;
1845
1846 DBG("unix_delay_report(%p): %u.%ums", dev, delay / 10, delay % 10);
1847
1848 memset(&ind, 0, sizeof(ind));
1849 ind.h.type = BT_INDICATION;
1850 ind.h.name = BT_DELAY_REPORT;
1851 ind.h.length = sizeof(ind);
1852 ind.delay = delay;
1853
1854 for (l = clients; l != NULL; l = g_slist_next(l)) {
1855 struct unix_client *client = l->data;
1856
1857 if (client->dev != dev || client->seid != seid)
1858 continue;
1859
1860 unix_ipc_sendmsg(client, (void *) &ind);
1861 }
1862 }
1863
unix_init(void)1864 int unix_init(void)
1865 {
1866 GIOChannel *io;
1867 struct sockaddr_un addr = {
1868 AF_UNIX, BT_IPC_SOCKET_NAME
1869 };
1870
1871 int sk, err;
1872
1873 sk = socket(PF_LOCAL, SOCK_STREAM, 0);
1874 if (sk < 0) {
1875 err = errno;
1876 error("Can't create unix socket: %s (%d)", strerror(err), err);
1877 return -err;
1878 }
1879
1880 if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
1881 error("Can't bind unix socket: %s (%d)", strerror(errno),
1882 errno);
1883 close(sk);
1884 return -1;
1885 }
1886
1887 set_nonblocking(sk);
1888
1889 if (listen(sk, 1) < 0) {
1890 error("Can't listen on unix socket: %s (%d)",
1891 strerror(errno), errno);
1892 close(sk);
1893 return -1;
1894 }
1895
1896 unix_sock = sk;
1897
1898 io = g_io_channel_unix_new(sk);
1899 g_io_add_watch(io, G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
1900 server_cb, NULL);
1901 g_io_channel_unref(io);
1902
1903 DBG("Unix socket created: %d", sk);
1904
1905 return 0;
1906 }
1907
unix_exit(void)1908 void unix_exit(void)
1909 {
1910 g_slist_foreach(clients, (GFunc) client_free, NULL);
1911 g_slist_free(clients);
1912 if (unix_sock >= 0) {
1913 close(unix_sock);
1914 unix_sock = -1;
1915 }
1916 }
1917