code.delx.au - pulseaudio/blob - src/modules/bluetooth/bluez5-util.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2008-2013 João Paulo Rechi Vita
   5
   6   PulseAudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU Lesser General Public License as
   8   published by the Free Software Foundation; either version 2.1 of the
   9   License, or (at your option) any later version.
  10
  11   PulseAudio is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public
  17   License along with PulseAudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <pulse/xmalloc.h>
  27
  28 #include <pulsecore/core.h>
  29 #include <pulsecore/core-util.h>
  30 #include <pulsecore/dbus-shared.h>
  31 #include <pulsecore/log.h>
  32 #include <pulsecore/macro.h>
  33 #include <pulsecore/refcnt.h>
  34 #include <pulsecore/shared.h>
  35
  36 #include "a2dp-codecs.h"
  37
  38 #include "bluez5-util.h"
  39
  40 #define BLUEZ_SERVICE "org.bluez"
  41 #define BLUEZ_ADAPTER_INTERFACE BLUEZ_SERVICE ".Adapter1"
  42 #define BLUEZ_DEVICE_INTERFACE BLUEZ_SERVICE ".Device1"
  43 #define BLUEZ_MEDIA_INTERFACE BLUEZ_SERVICE ".Media1"
  44 #define BLUEZ_MEDIA_ENDPOINT_INTERFACE BLUEZ_SERVICE ".MediaEndpoint1"
  45 #define BLUEZ_MEDIA_TRANSPORT_INTERFACE BLUEZ_SERVICE ".MediaTransport1"
  46
  47 #define BLUEZ_ERROR_NOT_SUPPORTED "org.bluez.Error.NotSupported"
  48
  49 #define A2DP_SOURCE_ENDPOINT "/MediaEndpoint/A2DPSource"
  50 #define A2DP_SINK_ENDPOINT "/MediaEndpoint/A2DPSink"
  51
  52 #define ENDPOINT_INTROSPECT_XML                                         \
  53     DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                           \
  54     "<node>"                                                            \
  55     " <interface name=\"" BLUEZ_MEDIA_ENDPOINT_INTERFACE "\">"          \
  56     "  <method name=\"SetConfiguration\">"                              \
  57     "   <arg name=\"transport\" direction=\"in\" type=\"o\"/>"          \
  58     "   <arg name=\"properties\" direction=\"in\" type=\"ay\"/>"        \
  59     "  </method>"                                                       \
  60     "  <method name=\"SelectConfiguration\">"                           \
  61     "   <arg name=\"capabilities\" direction=\"in\" type=\"ay\"/>"      \
  62     "   <arg name=\"configuration\" direction=\"out\" type=\"ay\"/>"    \
  63     "  </method>"                                                       \
  64     "  <method name=\"ClearConfiguration\">"                            \
  65     "   <arg name=\"transport\" direction=\"in\" type=\"o\"/>"          \
  66     "  </method>"                                                       \
  67     "  <method name=\"Release\">"                                       \
  68     "  </method>"                                                       \
  69     " </interface>"                                                     \
  70     " <interface name=\"org.freedesktop.DBus.Introspectable\">"         \
  71     "  <method name=\"Introspect\">"                                    \
  72     "   <arg name=\"data\" type=\"s\" direction=\"out\"/>"              \
  73     "  </method>"                                                       \
  74     " </interface>"                                                     \
  75     "</node>"
  76
  77 struct pa_bluetooth_discovery {
  78     PA_REFCNT_DECLARE;
  79
  80     pa_core *core;
  81     pa_dbus_connection *connection;
  82     bool filter_added;
  83     bool matches_added;
  84     bool objects_listed;
  85     pa_hook hooks[PA_BLUETOOTH_HOOK_MAX];
  86     pa_hashmap *adapters;
  87     pa_hashmap *devices;
  88     pa_hashmap *transports;
  89
  90     PA_LLIST_HEAD(pa_dbus_pending, pending);
  91 };
  92
  93 static pa_dbus_pending* send_and_add_to_pending(pa_bluetooth_discovery *y, DBusMessage *m,
  94                                                                   DBusPendingCallNotifyFunction func, void *call_data) {
  95     pa_dbus_pending *p;
  96     DBusPendingCall *call;
  97
  98     pa_assert(y);
  99     pa_assert(m);
 100
 101     pa_assert_se(dbus_connection_send_with_reply(pa_dbus_connection_get(y->connection), m, &call, -1));
 102
 103     p = pa_dbus_pending_new(pa_dbus_connection_get(y->connection), m, call, y, call_data);
 104     PA_LLIST_PREPEND(pa_dbus_pending, y->pending, p);
 105     dbus_pending_call_set_notify(call, func, p, NULL);
 106
 107     return p;
 108 }
 109
 110 static const char *check_variant_property(DBusMessageIter *i) {
 111     const char *key;
 112
 113     pa_assert(i);
 114
 115     if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_STRING) {
 116         pa_log_error("Property name not a string.");
 117         return NULL;
 118     }
 119
 120     dbus_message_iter_get_basic(i, &key);
 121
 122     if (!dbus_message_iter_next(i)) {
 123         pa_log_error("Property value missing");
 124         return NULL;
 125     }
 126
 127     if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_VARIANT) {
 128         pa_log_error("Property value not a variant.");
 129         return NULL;
 130     }
 131
 132     return key;
 133 }
 134
 135 pa_bluetooth_transport *pa_bluetooth_transport_new(pa_bluetooth_device *d, const char *owner, const char *path,
 136                                                    pa_bluetooth_profile_t p, const uint8_t *config, size_t size) {
 137     pa_bluetooth_transport *t;
 138
 139     t = pa_xnew0(pa_bluetooth_transport, 1);
 140     t->device = d;
 141     t->owner = pa_xstrdup(owner);
 142     t->path = pa_xstrdup(path);
 143     t->profile = p;
 144     t->config_size = size;
 145
 146     if (size > 0) {
 147         t->config = pa_xnew(uint8_t, size);
 148         memcpy(t->config, config, size);
 149     }
 150
 151     pa_assert_se(pa_hashmap_put(d->discovery->transports, t->path, t) >= 0);
 152
 153     return t;
 154 }
 155
 156 static const char *transport_state_to_string(pa_bluetooth_transport_state_t state) {
 157     switch(state) {
 158         case PA_BLUETOOTH_TRANSPORT_STATE_DISCONNECTED:
 159             return "disconnected";
 160         case PA_BLUETOOTH_TRANSPORT_STATE_IDLE:
 161             return "idle";
 162         case PA_BLUETOOTH_TRANSPORT_STATE_PLAYING:
 163             return "playing";
 164     }
 165
 166     return "invalid";
 167 }
 168
 169 static void transport_state_changed(pa_bluetooth_transport *t, pa_bluetooth_transport_state_t state) {
 170     bool old_any_connected;
 171
 172     pa_assert(t);
 173
 174     if (t->state == state)
 175         return;
 176
 177     old_any_connected = pa_bluetooth_device_any_transport_connected(t->device);
 178
 179     pa_log_debug("Transport %s state changed from %s to %s",
 180                  t->path, transport_state_to_string(t->state), transport_state_to_string(state));
 181
 182     t->state = state;
 183     if (state == PA_BLUETOOTH_TRANSPORT_STATE_DISCONNECTED)
 184         t->device->transports[t->profile] = NULL;
 185
 186     pa_hook_fire(&t->device->discovery->hooks[PA_BLUETOOTH_HOOK_TRANSPORT_STATE_CHANGED], t);
 187
 188     if (old_any_connected != pa_bluetooth_device_any_transport_connected(t->device))
 189         pa_hook_fire(&t->device->discovery->hooks[PA_BLUETOOTH_HOOK_DEVICE_CONNECTION_CHANGED], t->device);
 190 }
 191
 192 void pa_bluetooth_transport_put(pa_bluetooth_transport *t) {
 193     transport_state_changed(t, PA_BLUETOOTH_TRANSPORT_STATE_IDLE);
 194 }
 195
 196 void pa_bluetooth_transport_free(pa_bluetooth_transport *t) {
 197     pa_assert(t);
 198
 199     pa_hashmap_remove(t->device->discovery->transports, t->path);
 200     pa_xfree(t->owner);
 201     pa_xfree(t->path);
 202     pa_xfree(t->config);
 203     pa_xfree(t);
 204 }
 205
 206 static int bluez5_transport_acquire_cb(pa_bluetooth_transport *t, bool optional, size_t *imtu, size_t *omtu) {
 207     DBusMessage *m, *r;
 208     DBusError err;
 209     int ret;
 210     uint16_t i, o;
 211     const char *method = optional ? "TryAcquire" : "Acquire";
 212
 213     pa_assert(t);
 214     pa_assert(t->device);
 215     pa_assert(t->device->discovery);
 216
 217     pa_assert_se(m = dbus_message_new_method_call(t->owner, t->path, BLUEZ_MEDIA_TRANSPORT_INTERFACE, method));
 218
 219     dbus_error_init(&err);
 220
 221     r = dbus_connection_send_with_reply_and_block(pa_dbus_connection_get(t->device->discovery->connection), m, -1, &err);
 222     if (!r) {
 223         if (optional && pa_streq(err.name, "org.bluez.Error.NotAvailable"))
 224             pa_log_info("Failed optional acquire of unavailable transport %s", t->path);
 225         else
 226             pa_log_error("Transport %s() failed for transport %s (%s)", method, t->path, err.message);
 227
 228         dbus_error_free(&err);
 229         return -1;
 230     }
 231
 232     if (!dbus_message_get_args(r, &err, DBUS_TYPE_UNIX_FD, &ret, DBUS_TYPE_UINT16, &i, DBUS_TYPE_UINT16, &o,
 233                                DBUS_TYPE_INVALID)) {
 234         pa_log_error("Failed to parse %s() reply: %s", method, err.message);
 235         dbus_error_free(&err);
 236         ret = -1;
 237         goto finish;
 238     }
 239
 240     if (imtu)
 241         *imtu = i;
 242
 243     if (omtu)
 244         *omtu = o;
 245
 246 finish:
 247     dbus_message_unref(r);
 248     return ret;
 249 }
 250
 251 static void bluez5_transport_release_cb(pa_bluetooth_transport *t) {
 252     DBusMessage *m;
 253     DBusError err;
 254
 255     pa_assert(t);
 256     pa_assert(t->device);
 257     pa_assert(t->device->discovery);
 258
 259     dbus_error_init(&err);
 260
 261     if (t->state <= PA_BLUETOOTH_TRANSPORT_STATE_IDLE) {
 262         pa_log_info("Transport %s auto-released by BlueZ or already released", t->path);
 263         return;
 264     }
 265
 266     pa_assert_se(m = dbus_message_new_method_call(t->owner, t->path, BLUEZ_MEDIA_TRANSPORT_INTERFACE, "Release"));
 267     dbus_connection_send_with_reply_and_block(pa_dbus_connection_get(t->device->discovery->connection), m, -1, &err);
 268
 269     if (dbus_error_is_set(&err)) {
 270         pa_log_error("Failed to release transport %s: %s", t->path, err.message);
 271         dbus_error_free(&err);
 272     } else
 273         pa_log_info("Transport %s released", t->path);
 274 }
 275
 276 bool pa_bluetooth_device_any_transport_connected(const pa_bluetooth_device *d) {
 277     unsigned i;
 278
 279     pa_assert(d);
 280
 281     if (d->device_info_valid != 1)
 282         return false;
 283
 284     for (i = 0; i < PA_BLUETOOTH_PROFILE_COUNT; i++)
 285         if (d->transports[i] && d->transports[i]->state != PA_BLUETOOTH_TRANSPORT_STATE_DISCONNECTED)
 286             return true;
 287
 288     return false;
 289 }
 290
 291 static int transport_state_from_string(const char* value, pa_bluetooth_transport_state_t *state) {
 292     pa_assert(value);
 293     pa_assert(state);
 294
 295     if (pa_streq(value, "idle"))
 296         *state = PA_BLUETOOTH_TRANSPORT_STATE_IDLE;
 297     else if (pa_streq(value, "pending") || pa_streq(value, "active"))
 298         *state = PA_BLUETOOTH_TRANSPORT_STATE_PLAYING;
 299     else
 300         return -1;
 301
 302     return 0;
 303 }
 304
 305 static void parse_transport_property(pa_bluetooth_transport *t, DBusMessageIter *i) {
 306     const char *key;
 307     DBusMessageIter variant_i;
 308
 309     key = check_variant_property(i);
 310     if (key == NULL)
 311         return;
 312
 313     dbus_message_iter_recurse(i, &variant_i);
 314
 315     switch (dbus_message_iter_get_arg_type(&variant_i)) {
 316
 317         case DBUS_TYPE_STRING: {
 318
 319             const char *value;
 320             dbus_message_iter_get_basic(&variant_i, &value);
 321
 322             if (pa_streq(key, "State")) {
 323                 pa_bluetooth_transport_state_t state;
 324
 325                 if (transport_state_from_string(value, &state) < 0) {
 326                     pa_log_error("Invalid state received: %s", value);
 327                     return;
 328                 }
 329
 330                 transport_state_changed(t, state);
 331             }
 332
 333             break;
 334         }
 335     }
 336
 337     return;
 338 }
 339
 340 static int parse_transport_properties(pa_bluetooth_transport *t, DBusMessageIter *i) {
 341     DBusMessageIter element_i;
 342
 343     dbus_message_iter_recurse(i, &element_i);
 344
 345     while (dbus_message_iter_get_arg_type(&element_i) == DBUS_TYPE_DICT_ENTRY) {
 346         DBusMessageIter dict_i;
 347
 348         dbus_message_iter_recurse(&element_i, &dict_i);
 349
 350         parse_transport_property(t, &dict_i);
 351
 352         dbus_message_iter_next(&element_i);
 353     }
 354
 355     return 0;
 356 }
 357
 358 static pa_bluetooth_device* device_create(pa_bluetooth_discovery *y, const char *path) {
 359     pa_bluetooth_device *d;
 360
 361     pa_assert(y);
 362     pa_assert(path);
 363
 364     d = pa_xnew0(pa_bluetooth_device, 1);
 365     d->discovery = y;
 366     d->path = pa_xstrdup(path);
 367     d->uuids = pa_hashmap_new_full(pa_idxset_string_hash_func, pa_idxset_string_compare_func, NULL, pa_xfree);
 368
 369     pa_hashmap_put(y->devices, d->path, d);
 370
 371     return d;
 372 }
 373
 374 pa_bluetooth_device* pa_bluetooth_discovery_get_device_by_path(pa_bluetooth_discovery *y, const char *path) {
 375     pa_bluetooth_device *d;
 376
 377     pa_assert(y);
 378     pa_assert(PA_REFCNT_VALUE(y) > 0);
 379     pa_assert(path);
 380
 381     if ((d = pa_hashmap_get(y->devices, path)))
 382         if (d->device_info_valid == 1)
 383             return d;
 384
 385     return NULL;
 386 }
 387
 388 pa_bluetooth_device* pa_bluetooth_discovery_get_device_by_address(pa_bluetooth_discovery *y, const char *remote, const char *local) {
 389     pa_bluetooth_device *d;
 390     void *state = NULL;
 391
 392     pa_assert(y);
 393     pa_assert(PA_REFCNT_VALUE(y) > 0);
 394     pa_assert(remote);
 395     pa_assert(local);
 396
 397     while ((d = pa_hashmap_iterate(y->devices, &state, NULL)))
 398         if (d->device_info_valid == 1 && pa_streq(d->address, remote) && pa_streq(d->adapter->address, local))
 399             return d;
 400
 401     return NULL;
 402 }
 403
 404 static void device_free(pa_bluetooth_device *d) {
 405     unsigned i;
 406
 407     pa_assert(d);
 408
 409     for (i = 0; i < PA_BLUETOOTH_PROFILE_COUNT; i++) {
 410         pa_bluetooth_transport *t;
 411
 412         if (!(t = d->transports[i]))
 413             continue;
 414
 415         transport_state_changed(t, PA_BLUETOOTH_TRANSPORT_STATE_DISCONNECTED);
 416         pa_bluetooth_transport_free(t);
 417     }
 418
 419     if (d->uuids)
 420         pa_hashmap_free(d->uuids);
 421
 422     pa_xfree(d->path);
 423     pa_xfree(d->alias);
 424     pa_xfree(d->address);
 425     pa_xfree(d->adapter_path);
 426     pa_xfree(d);
 427 }
 428
 429 static void device_remove(pa_bluetooth_discovery *y, const char *path) {
 430     pa_bluetooth_device *d;
 431
 432     if (!(d = pa_hashmap_remove(y->devices, path)))
 433         pa_log_warn("Unknown device removed %s", path);
 434     else {
 435         pa_log_debug("Device %s removed", path);
 436         device_free(d);
 437     }
 438 }
 439
 440 static void set_device_info_valid(pa_bluetooth_device *device, int valid) {
 441     bool old_any_connected;
 442
 443     pa_assert(device);
 444     pa_assert(valid == -1 || valid == 0 || valid == 1);
 445
 446     if (valid == device->device_info_valid)
 447         return;
 448
 449     old_any_connected = pa_bluetooth_device_any_transport_connected(device);
 450     device->device_info_valid = valid;
 451
 452     if (pa_bluetooth_device_any_transport_connected(device) != old_any_connected)
 453         pa_hook_fire(&device->discovery->hooks[PA_BLUETOOTH_HOOK_DEVICE_CONNECTION_CHANGED], device);
 454 }
 455
 456 static pa_bluetooth_adapter* adapter_create(pa_bluetooth_discovery *y, const char *path) {
 457     pa_bluetooth_adapter *a;
 458
 459     pa_assert(y);
 460     pa_assert(path);
 461
 462     a = pa_xnew0(pa_bluetooth_adapter, 1);
 463     a->discovery = y;
 464     a->path = pa_xstrdup(path);
 465
 466     pa_hashmap_put(y->adapters, a->path, a);
 467
 468     return a;
 469 }
 470
 471 static void adapter_free(pa_bluetooth_adapter *a) {
 472     pa_bluetooth_device *d;
 473     void *state;
 474
 475     pa_assert(a);
 476     pa_assert(a->discovery);
 477
 478     PA_HASHMAP_FOREACH(d, a->discovery->devices, state)
 479         if (d->adapter == a) {
 480             set_device_info_valid(d, -1);
 481             d->adapter = NULL;
 482         }
 483
 484     pa_xfree(a->path);
 485     pa_xfree(a->address);
 486     pa_xfree(a);
 487 }
 488
 489 static void adapter_remove(pa_bluetooth_discovery *y, const char *path) {
 490     pa_bluetooth_adapter *a;
 491
 492     if (!(a = pa_hashmap_remove(y->adapters, path)))
 493         pa_log_warn("Unknown adapter removed %s", path);
 494     else {
 495         pa_log_debug("Adapter %s removed", path);
 496         adapter_free(a);
 497     }
 498 }
 499
 500 static void parse_device_property(pa_bluetooth_device *d, DBusMessageIter *i, bool is_property_change) {
 501     const char *key;
 502     DBusMessageIter variant_i;
 503
 504     pa_assert(d);
 505
 506     key = check_variant_property(i);
 507     if (key == NULL) {
 508         pa_log_error("Received invalid property for device %s", d->path);
 509         return;
 510     }
 511
 512     dbus_message_iter_recurse(i, &variant_i);
 513
 514     switch (dbus_message_iter_get_arg_type(&variant_i)) {
 515
 516         case DBUS_TYPE_STRING: {
 517             const char *value;
 518             dbus_message_iter_get_basic(&variant_i, &value);
 519
 520             if (pa_streq(key, "Alias")) {
 521                 pa_xfree(d->alias);
 522                 d->alias = pa_xstrdup(value);
 523                 pa_log_debug("%s: %s", key, value);
 524             } else if (pa_streq(key, "Address")) {
 525                 if (is_property_change) {
 526                     pa_log_warn("Device property 'Address' expected to be constant but changed for %s, ignoring", d->path);
 527                     return;
 528                 }
 529
 530                 if (d->address) {
 531                     pa_log_warn("Device %s: Received a duplicate 'Address' property, ignoring", d->path);
 532                     return;
 533                 }
 534
 535                 d->address = pa_xstrdup(value);
 536                 pa_log_debug("%s: %s", key, value);
 537             }
 538
 539             break;
 540         }
 541
 542         case DBUS_TYPE_OBJECT_PATH: {
 543             const char *value;
 544             dbus_message_iter_get_basic(&variant_i, &value);
 545
 546             if (pa_streq(key, "Adapter")) {
 547
 548                 if (is_property_change) {
 549                     pa_log_warn("Device property 'Adapter' expected to be constant but changed for %s, ignoring", d->path);
 550                     return;
 551                 }
 552
 553                 if (d->adapter_path) {
 554                     pa_log_warn("Device %s: Received a duplicate 'Adapter' property, ignoring", d->path);
 555                     return;
 556                 }
 557
 558                 d->adapter_path = pa_xstrdup(value);
 559
 560                 d->adapter = pa_hashmap_get(d->discovery->adapters, value);
 561                 if (!d->adapter)
 562                     pa_log_info("Device %s: 'Adapter' property references an unknown adapter %s.", d->path, value);
 563
 564                 pa_log_debug("%s: %s", key, value);
 565             }
 566
 567             break;
 568         }
 569
 570         case DBUS_TYPE_UINT32: {
 571             uint32_t value;
 572             dbus_message_iter_get_basic(&variant_i, &value);
 573
 574             if (pa_streq(key, "Class")) {
 575                 d->class_of_device = value;
 576                 pa_log_debug("%s: %d", key, value);
 577             }
 578
 579             break;
 580         }
 581
 582         case DBUS_TYPE_ARRAY: {
 583             DBusMessageIter ai;
 584             dbus_message_iter_recurse(&variant_i, &ai);
 585
 586             if (dbus_message_iter_get_arg_type(&ai) == DBUS_TYPE_STRING && pa_streq(key, "UUIDs")) {
 587                 /* bluetoothd never removes UUIDs from a device object so there
 588                  * is no need to handle it here. */
 589                 while (dbus_message_iter_get_arg_type(&ai) != DBUS_TYPE_INVALID) {
 590                     const char *value;
 591                     char *uuid;
 592
 593                     dbus_message_iter_get_basic(&ai, &value);
 594
 595                     if (pa_hashmap_get(d->uuids, value)) {
 596                         dbus_message_iter_next(&ai);
 597                         continue;
 598                     }
 599
 600                     uuid = pa_xstrdup(value);
 601                     pa_hashmap_put(d->uuids, uuid, uuid);
 602
 603                     pa_log_debug("%s: %s", key, value);
 604                     dbus_message_iter_next(&ai);
 605                 }
 606             }
 607
 608             break;
 609         }
 610     }
 611 }
 612
 613 static int parse_device_properties(pa_bluetooth_device *d, DBusMessageIter *i, bool is_property_change) {
 614     DBusMessageIter element_i;
 615
 616     dbus_message_iter_recurse(i, &element_i);
 617
 618     while (dbus_message_iter_get_arg_type(&element_i) == DBUS_TYPE_DICT_ENTRY) {
 619         DBusMessageIter dict_i;
 620
 621         dbus_message_iter_recurse(&element_i, &dict_i);
 622         parse_device_property(d, &dict_i, is_property_change);
 623         dbus_message_iter_next(&element_i);
 624     }
 625
 626     if (!d->address || !d->adapter_path || !d->alias) {
 627         pa_log_error("Non-optional information missing for device %s", d->path);
 628         set_device_info_valid(d, -1);
 629         return -1;
 630     }
 631
 632     if (!is_property_change && d->adapter)
 633         set_device_info_valid(d, 1);
 634
 635     /* If d->adapter is NULL, device_info_valid will be left as 0, and updated
 636      * after all interfaces have been parsed. */
 637
 638     return 0;
 639 }
 640
 641 static void parse_adapter_properties(pa_bluetooth_adapter *a, DBusMessageIter *i, bool is_property_change) {
 642     DBusMessageIter element_i;
 643
 644     pa_assert(a);
 645
 646     dbus_message_iter_recurse(i, &element_i);
 647
 648     while (dbus_message_iter_get_arg_type(&element_i) == DBUS_TYPE_DICT_ENTRY) {
 649         DBusMessageIter dict_i, variant_i;
 650         const char *key;
 651
 652         dbus_message_iter_recurse(&element_i, &dict_i);
 653
 654         key = check_variant_property(&dict_i);
 655         if (key == NULL) {
 656             pa_log_error("Received invalid property for adapter %s", a->path);
 657             return;
 658         }
 659
 660         dbus_message_iter_recurse(&dict_i, &variant_i);
 661
 662         if (dbus_message_iter_get_arg_type(&variant_i) == DBUS_TYPE_STRING && pa_streq(key, "Address")) {
 663             const char *value;
 664
 665             if (is_property_change) {
 666                 pa_log_warn("Adapter property 'Address' expected to be constant but changed for %s, ignoring", a->path);
 667                 return;
 668             }
 669
 670             if (a->address) {
 671                 pa_log_warn("Adapter %s received a duplicate 'Address' property, ignoring", a->path);
 672                 return;
 673             }
 674
 675             dbus_message_iter_get_basic(&variant_i, &value);
 676             a->address = pa_xstrdup(value);
 677         }
 678
 679         dbus_message_iter_next(&element_i);
 680     }
 681 }
 682
 683 static void register_endpoint_reply(DBusPendingCall *pending, void *userdata) {
 684     DBusMessage *r;
 685     pa_dbus_pending *p;
 686     pa_bluetooth_discovery *y;
 687     char *endpoint;
 688
 689     pa_assert(pending);
 690     pa_assert_se(p = userdata);
 691     pa_assert_se(y = p->context_data);
 692     pa_assert_se(endpoint = p->call_data);
 693     pa_assert_se(r = dbus_pending_call_steal_reply(pending));
 694
 695     if (dbus_message_is_error(r, BLUEZ_ERROR_NOT_SUPPORTED)) {
 696         pa_log_info("Couldn't register endpoint %s because it is disabled in BlueZ", endpoint);
 697         goto finish;
 698     }
 699
 700     if (dbus_message_get_type(r) == DBUS_MESSAGE_TYPE_ERROR) {
 701         pa_log_error(BLUEZ_MEDIA_INTERFACE ".RegisterEndpoint() failed: %s: %s", dbus_message_get_error_name(r),
 702                      pa_dbus_get_error_message(r));
 703         goto finish;
 704     }
 705
 706 finish:
 707     dbus_message_unref(r);
 708
 709     PA_LLIST_REMOVE(pa_dbus_pending, y->pending, p);
 710     pa_dbus_pending_free(p);
 711
 712     pa_xfree(endpoint);
 713 }
 714
 715 static void register_endpoint(pa_bluetooth_discovery *y, const char *path, const char *endpoint, const char *uuid) {
 716     DBusMessage *m;
 717     DBusMessageIter i, d;
 718     uint8_t codec = 0;
 719
 720     pa_log_debug("Registering %s on adapter %s", endpoint, path);
 721
 722     pa_assert_se(m = dbus_message_new_method_call(BLUEZ_SERVICE, path, BLUEZ_MEDIA_INTERFACE, "RegisterEndpoint"));
 723
 724     dbus_message_iter_init_append(m, &i);
 725     dbus_message_iter_append_basic(&i, DBUS_TYPE_OBJECT_PATH, &endpoint);
 726     dbus_message_iter_open_container(&i, DBUS_TYPE_ARRAY, DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING DBUS_TYPE_STRING_AS_STRING
 727                                          DBUS_TYPE_VARIANT_AS_STRING DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &d);
 728     pa_dbus_append_basic_variant_dict_entry(&d, "UUID", DBUS_TYPE_STRING, &uuid);
 729     pa_dbus_append_basic_variant_dict_entry(&d, "Codec", DBUS_TYPE_BYTE, &codec);
 730
 731     if (pa_streq(uuid, PA_BLUETOOTH_UUID_A2DP_SOURCE) || pa_streq(uuid, PA_BLUETOOTH_UUID_A2DP_SINK)) {
 732         a2dp_sbc_t capabilities;
 733
 734         capabilities.channel_mode = SBC_CHANNEL_MODE_MONO | SBC_CHANNEL_MODE_DUAL_CHANNEL | SBC_CHANNEL_MODE_STEREO |
 735                                     SBC_CHANNEL_MODE_JOINT_STEREO;
 736         capabilities.frequency = SBC_SAMPLING_FREQ_16000 | SBC_SAMPLING_FREQ_32000 | SBC_SAMPLING_FREQ_44100 |
 737                                  SBC_SAMPLING_FREQ_48000;
 738         capabilities.allocation_method = SBC_ALLOCATION_SNR | SBC_ALLOCATION_LOUDNESS;
 739         capabilities.subbands = SBC_SUBBANDS_4 | SBC_SUBBANDS_8;
 740         capabilities.block_length = SBC_BLOCK_LENGTH_4 | SBC_BLOCK_LENGTH_8 | SBC_BLOCK_LENGTH_12 | SBC_BLOCK_LENGTH_16;
 741         capabilities.min_bitpool = MIN_BITPOOL;
 742         capabilities.max_bitpool = MAX_BITPOOL;
 743
 744         pa_dbus_append_basic_array_variant_dict_entry(&d, "Capabilities", DBUS_TYPE_BYTE, &capabilities, sizeof(capabilities));
 745     }
 746
 747     dbus_message_iter_close_container(&i, &d);
 748
 749     send_and_add_to_pending(y, m, register_endpoint_reply, pa_xstrdup(endpoint));
 750 }
 751
 752 static void parse_interfaces_and_properties(pa_bluetooth_discovery *y, DBusMessageIter *dict_i) {
 753     DBusMessageIter element_i;
 754     const char *path;
 755     void *state;
 756     pa_bluetooth_device *d;
 757
 758     pa_assert(dbus_message_iter_get_arg_type(dict_i) == DBUS_TYPE_OBJECT_PATH);
 759     dbus_message_iter_get_basic(dict_i, &path);
 760
 761     pa_assert_se(dbus_message_iter_next(dict_i));
 762     pa_assert(dbus_message_iter_get_arg_type(dict_i) == DBUS_TYPE_ARRAY);
 763
 764     dbus_message_iter_recurse(dict_i, &element_i);
 765
 766     while (dbus_message_iter_get_arg_type(&element_i) == DBUS_TYPE_DICT_ENTRY) {
 767         DBusMessageIter iface_i;
 768         const char *interface;
 769
 770         dbus_message_iter_recurse(&element_i, &iface_i);
 771
 772         pa_assert(dbus_message_iter_get_arg_type(&iface_i) == DBUS_TYPE_STRING);
 773         dbus_message_iter_get_basic(&iface_i, &interface);
 774
 775         pa_assert_se(dbus_message_iter_next(&iface_i));
 776         pa_assert(dbus_message_iter_get_arg_type(&iface_i) == DBUS_TYPE_ARRAY);
 777
 778         if (pa_streq(interface, BLUEZ_ADAPTER_INTERFACE)) {
 779             pa_bluetooth_adapter *a;
 780
 781             if ((a = pa_hashmap_get(y->adapters, path))) {
 782                 pa_log_error("Found duplicated D-Bus path for adapter %s", path);
 783                 return;
 784             } else
 785                 a = adapter_create(y, path);
 786
 787             pa_log_debug("Adapter %s found", path);
 788
 789             parse_adapter_properties(a, &iface_i, false);
 790             if (!a->address)
 791                 return;
 792
 793             register_endpoint(y, path, A2DP_SOURCE_ENDPOINT, PA_BLUETOOTH_UUID_A2DP_SOURCE);
 794             register_endpoint(y, path, A2DP_SINK_ENDPOINT, PA_BLUETOOTH_UUID_A2DP_SINK);
 795
 796         } else if (pa_streq(interface, BLUEZ_DEVICE_INTERFACE)) {
 797
 798             if ((d = pa_hashmap_get(y->devices, path))) {
 799                 if (d->device_info_valid != 0) {
 800                     pa_log_error("Found duplicated D-Bus path for device %s", path);
 801                     return;
 802                 }
 803             } else
 804                 d = device_create(y, path);
 805
 806             pa_log_debug("Device %s found", d->path);
 807
 808             parse_device_properties(d, &iface_i, false);
 809
 810         } else
 811             pa_log_debug("Unknown interface %s found, skipping", interface);
 812
 813         dbus_message_iter_next(&element_i);
 814     }
 815
 816     PA_HASHMAP_FOREACH(d, y->devices, state) {
 817         if (d->device_info_valid != 0)
 818             continue;
 819
 820         if (!d->adapter && d->adapter_path) {
 821             d->adapter = pa_hashmap_get(d->discovery->adapters, d->adapter_path);
 822             if (!d->adapter || !d->adapter->address) {
 823                 pa_log_error("Device %s is child of nonexistent or corrupted adapter %s", d->path, d->adapter_path);
 824                 set_device_info_valid(d, -1);
 825             } else
 826                 set_device_info_valid(d, 1);
 827         }
 828     }
 829
 830     return;
 831 }
 832
 833 static void get_managed_objects_reply(DBusPendingCall *pending, void *userdata) {
 834     pa_dbus_pending *p;
 835     pa_bluetooth_discovery *y;
 836     DBusMessage *r;
 837     DBusMessageIter arg_i, element_i;
 838
 839     pa_assert_se(p = userdata);
 840     pa_assert_se(y = p->context_data);
 841     pa_assert_se(r = dbus_pending_call_steal_reply(pending));
 842
 843     if (dbus_message_is_error(r, DBUS_ERROR_UNKNOWN_METHOD)) {
 844         pa_log_warn("BlueZ D-Bus ObjectManager not available");
 845         goto finish;
 846     }
 847
 848     if (dbus_message_get_type(r) == DBUS_MESSAGE_TYPE_ERROR) {
 849         pa_log_error("GetManagedObjects() failed: %s: %s", dbus_message_get_error_name(r), pa_dbus_get_error_message(r));
 850         goto finish;
 851     }
 852
 853     if (!dbus_message_iter_init(r, &arg_i) || !pa_streq(dbus_message_get_signature(r), "a{oa{sa{sv}}}")) {
 854         pa_log_error("Invalid reply signature for GetManagedObjects()");
 855         goto finish;
 856     }
 857
 858     dbus_message_iter_recurse(&arg_i, &element_i);
 859     while (dbus_message_iter_get_arg_type(&element_i) == DBUS_TYPE_DICT_ENTRY) {
 860         DBusMessageIter dict_i;
 861
 862         dbus_message_iter_recurse(&element_i, &dict_i);
 863
 864         parse_interfaces_and_properties(y, &dict_i);
 865
 866         dbus_message_iter_next(&element_i);
 867     }
 868
 869     y->objects_listed = true;
 870
 871 finish:
 872     dbus_message_unref(r);
 873
 874     PA_LLIST_REMOVE(pa_dbus_pending, y->pending, p);
 875     pa_dbus_pending_free(p);
 876 }
 877
 878 static void get_managed_objects(pa_bluetooth_discovery *y) {
 879     DBusMessage *m;
 880
 881     pa_assert(y);
 882
 883     pa_assert_se(m = dbus_message_new_method_call(BLUEZ_SERVICE, "/", "org.freedesktop.DBus.ObjectManager",
 884                                                   "GetManagedObjects"));
 885     send_and_add_to_pending(y, m, get_managed_objects_reply, NULL);
 886 }
 887
 888 pa_hook* pa_bluetooth_discovery_hook(pa_bluetooth_discovery *y, pa_bluetooth_hook_t hook) {
 889     pa_assert(y);
 890     pa_assert(PA_REFCNT_VALUE(y) > 0);
 891
 892     return &y->hooks[hook];
 893 }
 894
 895 static DBusHandlerResult filter_cb(DBusConnection *bus, DBusMessage *m, void *userdata) {
 896     pa_bluetooth_discovery *y;
 897     DBusError err;
 898
 899     pa_assert(bus);
 900     pa_assert(m);
 901     pa_assert_se(y = userdata);
 902
 903     dbus_error_init(&err);
 904
 905     if (dbus_message_is_signal(m, "org.freedesktop.DBus", "NameOwnerChanged")) {
 906         const char *name, *old_owner, *new_owner;
 907
 908         if (!dbus_message_get_args(m, &err,
 909                                    DBUS_TYPE_STRING, &name,
 910                                    DBUS_TYPE_STRING, &old_owner,
 911                                    DBUS_TYPE_STRING, &new_owner,
 912                                    DBUS_TYPE_INVALID)) {
 913             pa_log_error("Failed to parse org.freedesktop.DBus.NameOwnerChanged: %s", err.message);
 914             goto fail;
 915         }
 916
 917         if (pa_streq(name, BLUEZ_SERVICE)) {
 918             if (old_owner && *old_owner) {
 919                 pa_log_debug("Bluetooth daemon disappeared");
 920                 pa_hashmap_remove_all(y->devices);
 921                 pa_hashmap_remove_all(y->adapters);
 922                 y->objects_listed = false;
 923             }
 924
 925             if (new_owner && *new_owner) {
 926                 pa_log_debug("Bluetooth daemon appeared");
 927                 get_managed_objects(y);
 928             }
 929         }
 930
 931         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 932     } else if (dbus_message_is_signal(m, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded")) {
 933         DBusMessageIter arg_i;
 934
 935         if (!y->objects_listed)
 936             return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; /* No reply received yet from GetManagedObjects */
 937
 938         if (!dbus_message_iter_init(m, &arg_i) || !pa_streq(dbus_message_get_signature(m), "oa{sa{sv}}")) {
 939             pa_log_error("Invalid signature found in InterfacesAdded");
 940             goto fail;
 941         }
 942
 943         parse_interfaces_and_properties(y, &arg_i);
 944
 945         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 946     } else if (dbus_message_is_signal(m, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved")) {
 947         const char *p;
 948         DBusMessageIter arg_i;
 949         DBusMessageIter element_i;
 950
 951         if (!y->objects_listed)
 952             return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; /* No reply received yet from GetManagedObjects */
 953
 954         if (!dbus_message_iter_init(m, &arg_i) || !pa_streq(dbus_message_get_signature(m), "oas")) {
 955             pa_log_error("Invalid signature found in InterfacesRemoved");
 956             goto fail;
 957         }
 958
 959         dbus_message_iter_get_basic(&arg_i, &p);
 960
 961         pa_assert_se(dbus_message_iter_next(&arg_i));
 962         pa_assert(dbus_message_iter_get_arg_type(&arg_i) == DBUS_TYPE_ARRAY);
 963
 964         dbus_message_iter_recurse(&arg_i, &element_i);
 965
 966         while (dbus_message_iter_get_arg_type(&element_i) == DBUS_TYPE_STRING) {
 967             const char *iface;
 968
 969             dbus_message_iter_get_basic(&element_i, &iface);
 970
 971             if (pa_streq(iface, BLUEZ_DEVICE_INTERFACE))
 972                 device_remove(y, p);
 973             else if (pa_streq(iface, BLUEZ_ADAPTER_INTERFACE))
 974                 adapter_remove(y, p);
 975
 976             dbus_message_iter_next(&element_i);
 977         }
 978
 979         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 980
 981     } else if (dbus_message_is_signal(m, "org.freedesktop.DBus.Properties", "PropertiesChanged")) {
 982         DBusMessageIter arg_i;
 983         const char *iface;
 984
 985         if (!y->objects_listed)
 986             return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; /* No reply received yet from GetManagedObjects */
 987
 988         if (!dbus_message_iter_init(m, &arg_i) || !pa_streq(dbus_message_get_signature(m), "sa{sv}as")) {
 989             pa_log_error("Invalid signature found in PropertiesChanged");
 990             goto fail;
 991         }
 992
 993         dbus_message_iter_get_basic(&arg_i, &iface);
 994
 995         pa_assert_se(dbus_message_iter_next(&arg_i));
 996         pa_assert(dbus_message_iter_get_arg_type(&arg_i) == DBUS_TYPE_ARRAY);
 997
 998         if (pa_streq(iface, BLUEZ_ADAPTER_INTERFACE)) {
 999             pa_bluetooth_adapter *a;
1000
1001             pa_log_debug("Properties changed in adapter %s", dbus_message_get_path(m));
1002
1003             if (!(a = pa_hashmap_get(y->adapters, dbus_message_get_path(m)))) {
1004                 pa_log_warn("Properties changed in unknown adapter");
1005                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1006             }
1007
1008             parse_adapter_properties(a, &arg_i, true);
1009
1010         } else if (pa_streq(iface, BLUEZ_DEVICE_INTERFACE)) {
1011             pa_bluetooth_device *d;
1012
1013             pa_log_debug("Properties changed in device %s", dbus_message_get_path(m));
1014
1015             if (!(d = pa_hashmap_get(y->devices, dbus_message_get_path(m)))) {
1016                 pa_log_warn("Properties changed in unknown device");
1017                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1018             }
1019
1020             if (d->device_info_valid != 1) {
1021                 pa_log_warn("Properties changed in a device which information is unknown or invalid");
1022                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1023             }
1024
1025             parse_device_properties(d, &arg_i, true);
1026         } else if (pa_streq(iface, BLUEZ_MEDIA_TRANSPORT_INTERFACE)) {
1027             pa_bluetooth_transport *t;
1028
1029             pa_log_debug("Properties changed in transport %s", dbus_message_get_path(m));
1030
1031             if (!(t = pa_hashmap_get(y->transports, dbus_message_get_path(m))))
1032                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1033
1034             parse_transport_properties(t, &arg_i);
1035         }
1036
1037         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1038     }
1039
1040 fail:
1041     dbus_error_free(&err);
1042
1043     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1044 }
1045
1046 static uint8_t a2dp_default_bitpool(uint8_t freq, uint8_t mode) {
1047     /* These bitpool values were chosen based on the A2DP spec recommendation */
1048     switch (freq) {
1049         case SBC_SAMPLING_FREQ_16000:
1050         case SBC_SAMPLING_FREQ_32000:
1051             return 53;
1052
1053         case SBC_SAMPLING_FREQ_44100:
1054
1055             switch (mode) {
1056                 case SBC_CHANNEL_MODE_MONO:
1057                 case SBC_CHANNEL_MODE_DUAL_CHANNEL:
1058                     return 31;
1059
1060                 case SBC_CHANNEL_MODE_STEREO:
1061                 case SBC_CHANNEL_MODE_JOINT_STEREO:
1062                     return 53;
1063             }
1064
1065             pa_log_warn("Invalid channel mode %u", mode);
1066             return 53;
1067
1068         case SBC_SAMPLING_FREQ_48000:
1069
1070             switch (mode) {
1071                 case SBC_CHANNEL_MODE_MONO:
1072                 case SBC_CHANNEL_MODE_DUAL_CHANNEL:
1073                     return 29;
1074
1075                 case SBC_CHANNEL_MODE_STEREO:
1076                 case SBC_CHANNEL_MODE_JOINT_STEREO:
1077                     return 51;
1078             }
1079
1080             pa_log_warn("Invalid channel mode %u", mode);
1081             return 51;
1082     }
1083
1084     pa_log_warn("Invalid sampling freq %u", freq);
1085     return 53;
1086 }
1087
1088 const char *pa_bluetooth_profile_to_string(pa_bluetooth_profile_t profile) {
1089     switch(profile) {
1090         case PA_BLUETOOTH_PROFILE_A2DP_SINK:
1091             return "a2dp_sink";
1092         case PA_BLUETOOTH_PROFILE_A2DP_SOURCE:
1093             return "a2dp_source";
1094         case PA_BLUETOOTH_PROFILE_OFF:
1095             return "off";
1096     }
1097
1098     return NULL;
1099 }
1100
1101 static DBusMessage *endpoint_set_configuration(DBusConnection *conn, DBusMessage *m, void *userdata) {
1102     pa_bluetooth_discovery *y = userdata;
1103     pa_bluetooth_device *d;
1104     pa_bluetooth_transport *t;
1105     const char *sender, *path, *endpoint_path, *dev_path = NULL, *uuid = NULL;
1106     const uint8_t *config = NULL;
1107     int size = 0;
1108     pa_bluetooth_profile_t p = PA_BLUETOOTH_PROFILE_OFF;
1109     DBusMessageIter args, props;
1110     DBusMessage *r;
1111
1112     if (!dbus_message_iter_init(m, &args) || !pa_streq(dbus_message_get_signature(m), "oa{sv}")) {
1113         pa_log_error("Invalid signature for method SetConfiguration()");
1114         goto fail2;
1115     }
1116
1117     dbus_message_iter_get_basic(&args, &path);
1118
1119     if (pa_hashmap_get(y->transports, path)) {
1120         pa_log_error("Endpoint SetConfiguration(): Transport %s is already configured.", path);
1121         goto fail2;
1122     }
1123
1124     pa_assert_se(dbus_message_iter_next(&args));
1125
1126     dbus_message_iter_recurse(&args, &props);
1127     if (dbus_message_iter_get_arg_type(&props) != DBUS_TYPE_DICT_ENTRY)
1128         goto fail;
1129
1130     /* Read transport properties */
1131     while (dbus_message_iter_get_arg_type(&props) == DBUS_TYPE_DICT_ENTRY) {
1132         const char *key;
1133         DBusMessageIter value, entry;
1134         int var;
1135
1136         dbus_message_iter_recurse(&props, &entry);
1137         dbus_message_iter_get_basic(&entry, &key);
1138
1139         dbus_message_iter_next(&entry);
1140         dbus_message_iter_recurse(&entry, &value);
1141
1142         var = dbus_message_iter_get_arg_type(&value);
1143
1144         if (pa_streq(key, "UUID")) {
1145             if (var != DBUS_TYPE_STRING) {
1146                 pa_log_error("Property %s of wrong type %c", key, (char)var);
1147                 goto fail;
1148             }
1149
1150             dbus_message_iter_get_basic(&value, &uuid);
1151
1152             endpoint_path = dbus_message_get_path(m);
1153             if (pa_streq(endpoint_path, A2DP_SOURCE_ENDPOINT)) {
1154                 if (pa_streq(uuid, PA_BLUETOOTH_UUID_A2DP_SOURCE))
1155                     p = PA_BLUETOOTH_PROFILE_A2DP_SINK;
1156             } else if (pa_streq(endpoint_path, A2DP_SINK_ENDPOINT)) {
1157                 if (pa_streq(uuid, PA_BLUETOOTH_UUID_A2DP_SINK))
1158                     p = PA_BLUETOOTH_PROFILE_A2DP_SOURCE;
1159             }
1160
1161             if (p == PA_BLUETOOTH_PROFILE_OFF) {
1162                 pa_log_error("UUID %s of transport %s incompatible with endpoint %s", uuid, path, endpoint_path);
1163                 goto fail;
1164             }
1165         } else if (pa_streq(key, "Device")) {
1166             if (var != DBUS_TYPE_OBJECT_PATH) {
1167                 pa_log_error("Property %s of wrong type %c", key, (char)var);
1168                 goto fail;
1169             }
1170
1171             dbus_message_iter_get_basic(&value, &dev_path);
1172         } else if (pa_streq(key, "Configuration")) {
1173             DBusMessageIter array;
1174             a2dp_sbc_t *c;
1175
1176             if (var != DBUS_TYPE_ARRAY) {
1177                 pa_log_error("Property %s of wrong type %c", key, (char)var);
1178                 goto fail;
1179             }
1180
1181             dbus_message_iter_recurse(&value, &array);
1182             var = dbus_message_iter_get_arg_type(&array);
1183             if (var != DBUS_TYPE_BYTE) {
1184                 pa_log_error("%s is an array of wrong type %c", key, (char)var);
1185                 goto fail;
1186             }
1187
1188             dbus_message_iter_get_fixed_array(&array, &config, &size);
1189             if (size != sizeof(a2dp_sbc_t)) {
1190                 pa_log_error("Configuration array of invalid size");
1191                 goto fail;
1192             }
1193
1194             c = (a2dp_sbc_t *) config;
1195
1196             if (c->frequency != SBC_SAMPLING_FREQ_16000 && c->frequency != SBC_SAMPLING_FREQ_32000 &&
1197                 c->frequency != SBC_SAMPLING_FREQ_44100 && c->frequency != SBC_SAMPLING_FREQ_48000) {
1198                 pa_log_error("Invalid sampling frequency in configuration");
1199                 goto fail;
1200             }
1201
1202             if (c->channel_mode != SBC_CHANNEL_MODE_MONO && c->channel_mode != SBC_CHANNEL_MODE_DUAL_CHANNEL &&
1203                 c->channel_mode != SBC_CHANNEL_MODE_STEREO && c->channel_mode != SBC_CHANNEL_MODE_JOINT_STEREO) {
1204                 pa_log_error("Invalid channel mode in configuration");
1205                 goto fail;
1206             }
1207
1208             if (c->allocation_method != SBC_ALLOCATION_SNR && c->allocation_method != SBC_ALLOCATION_LOUDNESS) {
1209                 pa_log_error("Invalid allocation method in configuration");
1210                 goto fail;
1211             }
1212
1213             if (c->subbands != SBC_SUBBANDS_4 && c->subbands != SBC_SUBBANDS_8) {
1214                 pa_log_error("Invalid SBC subbands in configuration");
1215                 goto fail;
1216             }
1217
1218             if (c->block_length != SBC_BLOCK_LENGTH_4 && c->block_length != SBC_BLOCK_LENGTH_8 &&
1219                 c->block_length != SBC_BLOCK_LENGTH_12 && c->block_length != SBC_BLOCK_LENGTH_16) {
1220                 pa_log_error("Invalid block length in configuration");
1221                 goto fail;
1222             }
1223         }
1224
1225         dbus_message_iter_next(&props);
1226     }
1227
1228     if ((d = pa_hashmap_get(y->devices, dev_path))) {
1229         if (d->device_info_valid == -1) {
1230             pa_log_error("Information about device %s is invalid", dev_path);
1231             goto fail2;
1232         }
1233     } else {
1234         /* InterfacesAdded signal is probably on its way, device_info_valid is kept as 0. */
1235         pa_log_warn("SetConfiguration() received for unknown device %s", dev_path);
1236         d = device_create(y, dev_path);
1237     }
1238
1239     if (d->transports[p] != NULL) {
1240         pa_log_error("Cannot configure transport %s because profile %s is already used", path, pa_bluetooth_profile_to_string(p));
1241         goto fail2;
1242     }
1243
1244     sender = dbus_message_get_sender(m);
1245
1246     pa_assert_se(r = dbus_message_new_method_return(m));
1247     pa_assert_se(dbus_connection_send(pa_dbus_connection_get(y->connection), r, NULL));
1248     dbus_message_unref(r);
1249
1250     d->transports[p] = t = pa_bluetooth_transport_new(d, sender, path, p, config, size);
1251     t->acquire = bluez5_transport_acquire_cb;
1252     t->release = bluez5_transport_release_cb;
1253     pa_bluetooth_transport_put(t);
1254
1255     pa_log_debug("Transport %s available for profile %s", t->path, pa_bluetooth_profile_to_string(t->profile));
1256
1257     return NULL;
1258
1259 fail:
1260     pa_log_error("Endpoint SetConfiguration(): invalid arguments");
1261
1262 fail2:
1263     pa_assert_se(r = dbus_message_new_error(m, "org.bluez.Error.InvalidArguments", "Unable to set configuration"));
1264     return r;
1265 }
1266
1267 static DBusMessage *endpoint_select_configuration(DBusConnection *conn, DBusMessage *m, void *userdata) {
1268     pa_bluetooth_discovery *y = userdata;
1269     a2dp_sbc_t *cap, config;
1270     uint8_t *pconf = (uint8_t *) &config;
1271     int i, size;
1272     DBusMessage *r;
1273     DBusError err;
1274
1275     static const struct {
1276         uint32_t rate;
1277         uint8_t cap;
1278     } freq_table[] = {
1279         { 16000U, SBC_SAMPLING_FREQ_16000 },
1280         { 32000U, SBC_SAMPLING_FREQ_32000 },
1281         { 44100U, SBC_SAMPLING_FREQ_44100 },
1282         { 48000U, SBC_SAMPLING_FREQ_48000 }
1283     };
1284
1285     dbus_error_init(&err);
1286
1287     if (!dbus_message_get_args(m, &err, DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, &cap, &size, DBUS_TYPE_INVALID)) {
1288         pa_log_error("Endpoint SelectConfiguration(): %s", err.message);
1289         dbus_error_free(&err);
1290         goto fail;
1291     }
1292
1293     if (size != sizeof(config)) {
1294         pa_log_error("Capabilities array has invalid size");
1295         goto fail;
1296     }
1297
1298     pa_zero(config);
1299
1300     /* Find the lowest freq that is at least as high as the requested sampling rate */
1301     for (i = 0; (unsigned) i < PA_ELEMENTSOF(freq_table); i++)
1302         if (freq_table[i].rate >= y->core->default_sample_spec.rate && (cap->frequency & freq_table[i].cap)) {
1303             config.frequency = freq_table[i].cap;
1304             break;
1305         }
1306
1307     if ((unsigned) i == PA_ELEMENTSOF(freq_table)) {
1308         for (--i; i >= 0; i--) {
1309             if (cap->frequency & freq_table[i].cap) {
1310                 config.frequency = freq_table[i].cap;
1311                 break;
1312             }
1313         }
1314
1315         if (i < 0) {
1316             pa_log_error("Not suitable sample rate");
1317             goto fail;
1318         }
1319     }
1320
1321     pa_assert((unsigned) i < PA_ELEMENTSOF(freq_table));
1322
1323     if (y->core->default_sample_spec.channels <= 1) {
1324         if (cap->channel_mode & SBC_CHANNEL_MODE_MONO)
1325             config.channel_mode = SBC_CHANNEL_MODE_MONO;
1326         else if (cap->channel_mode & SBC_CHANNEL_MODE_JOINT_STEREO)
1327             config.channel_mode = SBC_CHANNEL_MODE_JOINT_STEREO;
1328         else if (cap->channel_mode & SBC_CHANNEL_MODE_STEREO)
1329             config.channel_mode = SBC_CHANNEL_MODE_STEREO;
1330         else if (cap->channel_mode & SBC_CHANNEL_MODE_DUAL_CHANNEL)
1331             config.channel_mode = SBC_CHANNEL_MODE_DUAL_CHANNEL;
1332         else {
1333             pa_log_error("No supported channel modes");
1334             goto fail;
1335         }
1336     }
1337
1338     if (y->core->default_sample_spec.channels >= 2) {
1339         if (cap->channel_mode & SBC_CHANNEL_MODE_JOINT_STEREO)
1340             config.channel_mode = SBC_CHANNEL_MODE_JOINT_STEREO;
1341         else if (cap->channel_mode & SBC_CHANNEL_MODE_STEREO)
1342             config.channel_mode = SBC_CHANNEL_MODE_STEREO;
1343         else if (cap->channel_mode & SBC_CHANNEL_MODE_DUAL_CHANNEL)
1344             config.channel_mode = SBC_CHANNEL_MODE_DUAL_CHANNEL;
1345         else if (cap->channel_mode & SBC_CHANNEL_MODE_MONO)
1346             config.channel_mode = SBC_CHANNEL_MODE_MONO;
1347         else {
1348             pa_log_error("No supported channel modes");
1349             goto fail;
1350         }
1351     }
1352
1353     if (cap->block_length & SBC_BLOCK_LENGTH_16)
1354         config.block_length = SBC_BLOCK_LENGTH_16;
1355     else if (cap->block_length & SBC_BLOCK_LENGTH_12)
1356         config.block_length = SBC_BLOCK_LENGTH_12;
1357     else if (cap->block_length & SBC_BLOCK_LENGTH_8)
1358         config.block_length = SBC_BLOCK_LENGTH_8;
1359     else if (cap->block_length & SBC_BLOCK_LENGTH_4)
1360         config.block_length = SBC_BLOCK_LENGTH_4;
1361     else {
1362         pa_log_error("No supported block lengths");
1363         goto fail;
1364     }
1365
1366     if (cap->subbands & SBC_SUBBANDS_8)
1367         config.subbands = SBC_SUBBANDS_8;
1368     else if (cap->subbands & SBC_SUBBANDS_4)
1369         config.subbands = SBC_SUBBANDS_4;
1370     else {
1371         pa_log_error("No supported subbands");
1372         goto fail;
1373     }
1374
1375     if (cap->allocation_method & SBC_ALLOCATION_LOUDNESS)
1376         config.allocation_method = SBC_ALLOCATION_LOUDNESS;
1377     else if (cap->allocation_method & SBC_ALLOCATION_SNR)
1378         config.allocation_method = SBC_ALLOCATION_SNR;
1379
1380     config.min_bitpool = (uint8_t) PA_MAX(MIN_BITPOOL, cap->min_bitpool);
1381     config.max_bitpool = (uint8_t) PA_MIN(a2dp_default_bitpool(config.frequency, config.channel_mode), cap->max_bitpool);
1382
1383     if (config.min_bitpool > config.max_bitpool)
1384         goto fail;
1385
1386     pa_assert_se(r = dbus_message_new_method_return(m));
1387     pa_assert_se(dbus_message_append_args(r, DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, &pconf, size, DBUS_TYPE_INVALID));
1388
1389     return r;
1390
1391 fail:
1392     pa_assert_se(r = dbus_message_new_error(m, "org.bluez.Error.InvalidArguments", "Unable to select configuration"));
1393     return r;
1394 }
1395
1396 static DBusMessage *endpoint_clear_configuration(DBusConnection *conn, DBusMessage *m, void *userdata) {
1397     pa_bluetooth_discovery *y = userdata;
1398     pa_bluetooth_transport *t;
1399     DBusMessage *r;
1400     DBusError err;
1401     const char *path;
1402
1403     dbus_error_init(&err);
1404
1405     if (!dbus_message_get_args(m, &err, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) {
1406         pa_log_error("Endpoint ClearConfiguration(): %s", err.message);
1407         dbus_error_free(&err);
1408         goto fail;
1409     }
1410
1411     if ((t = pa_hashmap_get(y->transports, path))) {
1412         pa_log_debug("Clearing transport %s profile %s", t->path, pa_bluetooth_profile_to_string(t->profile));
1413         transport_state_changed(t, PA_BLUETOOTH_TRANSPORT_STATE_DISCONNECTED);
1414         pa_bluetooth_transport_free(t);
1415     }
1416
1417     pa_assert_se(r = dbus_message_new_method_return(m));
1418
1419     return r;
1420
1421 fail:
1422     pa_assert_se(r = dbus_message_new_error(m, "org.bluez.Error.InvalidArguments", "Unable to clear configuration"));
1423     return r;
1424 }
1425
1426 static DBusMessage *endpoint_release(DBusConnection *conn, DBusMessage *m, void *userdata) {
1427     DBusMessage *r;
1428
1429     pa_assert_se(r = dbus_message_new_error(m, BLUEZ_MEDIA_ENDPOINT_INTERFACE ".Error.NotImplemented",
1430                                             "Method not implemented"));
1431
1432     return r;
1433 }
1434
1435 static DBusHandlerResult endpoint_handler(DBusConnection *c, DBusMessage *m, void *userdata) {
1436     struct pa_bluetooth_discovery *y = userdata;
1437     DBusMessage *r = NULL;
1438     const char *path, *interface, *member;
1439
1440     pa_assert(y);
1441
1442     path = dbus_message_get_path(m);
1443     interface = dbus_message_get_interface(m);
1444     member = dbus_message_get_member(m);
1445
1446     pa_log_debug("dbus: path=%s, interface=%s, member=%s", path, interface, member);
1447
1448     if (!pa_streq(path, A2DP_SOURCE_ENDPOINT) && !pa_streq(path, A2DP_SINK_ENDPOINT))
1449         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1450
1451     if (dbus_message_is_method_call(m, "org.freedesktop.DBus.Introspectable", "Introspect")) {
1452         const char *xml = ENDPOINT_INTROSPECT_XML;
1453
1454         pa_assert_se(r = dbus_message_new_method_return(m));
1455         pa_assert_se(dbus_message_append_args(r, DBUS_TYPE_STRING, &xml, DBUS_TYPE_INVALID));
1456
1457     } else if (dbus_message_is_method_call(m, BLUEZ_MEDIA_ENDPOINT_INTERFACE, "SetConfiguration"))
1458         r = endpoint_set_configuration(c, m, userdata);
1459     else if (dbus_message_is_method_call(m, BLUEZ_MEDIA_ENDPOINT_INTERFACE, "SelectConfiguration"))
1460         r = endpoint_select_configuration(c, m, userdata);
1461     else if (dbus_message_is_method_call(m, BLUEZ_MEDIA_ENDPOINT_INTERFACE, "ClearConfiguration"))
1462         r = endpoint_clear_configuration(c, m, userdata);
1463     else if (dbus_message_is_method_call(m, BLUEZ_MEDIA_ENDPOINT_INTERFACE, "Release"))
1464         r = endpoint_release(c, m, userdata);
1465     else
1466         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1467
1468     if (r) {
1469         pa_assert_se(dbus_connection_send(pa_dbus_connection_get(y->connection), r, NULL));
1470         dbus_message_unref(r);
1471     }
1472
1473     return DBUS_HANDLER_RESULT_HANDLED;
1474 }
1475
1476 static void endpoint_init(pa_bluetooth_discovery *y, pa_bluetooth_profile_t profile) {
1477     static const DBusObjectPathVTable vtable_endpoint = {
1478         .message_function = endpoint_handler,
1479     };
1480
1481     pa_assert(y);
1482
1483     switch(profile) {
1484         case PA_BLUETOOTH_PROFILE_A2DP_SINK:
1485             pa_assert_se(dbus_connection_register_object_path(pa_dbus_connection_get(y->connection), A2DP_SOURCE_ENDPOINT,
1486                                                               &vtable_endpoint, y));
1487             break;
1488         case PA_BLUETOOTH_PROFILE_A2DP_SOURCE:
1489             pa_assert_se(dbus_connection_register_object_path(pa_dbus_connection_get(y->connection), A2DP_SINK_ENDPOINT,
1490                                                               &vtable_endpoint, y));
1491             break;
1492         default:
1493             pa_assert_not_reached();
1494             break;
1495     }
1496 }
1497
1498 static void endpoint_done(pa_bluetooth_discovery *y, pa_bluetooth_profile_t profile) {
1499     pa_assert(y);
1500
1501     switch(profile) {
1502         case PA_BLUETOOTH_PROFILE_A2DP_SINK:
1503             dbus_connection_unregister_object_path(pa_dbus_connection_get(y->connection), A2DP_SOURCE_ENDPOINT);
1504             break;
1505         case PA_BLUETOOTH_PROFILE_A2DP_SOURCE:
1506             dbus_connection_unregister_object_path(pa_dbus_connection_get(y->connection), A2DP_SINK_ENDPOINT);
1507             break;
1508         default:
1509             pa_assert_not_reached();
1510             break;
1511     }
1512 }
1513
1514 pa_bluetooth_discovery* pa_bluetooth_discovery_get(pa_core *c) {
1515     pa_bluetooth_discovery *y;
1516     DBusError err;
1517     DBusConnection *conn;
1518     unsigned i;
1519
1520     y = pa_xnew0(pa_bluetooth_discovery, 1);
1521     PA_REFCNT_INIT(y);
1522     y->core = c;
1523     y->adapters = pa_hashmap_new_full(pa_idxset_string_hash_func, pa_idxset_string_compare_func, NULL,
1524                                       (pa_free_cb_t) adapter_free);
1525     y->devices = pa_hashmap_new_full(pa_idxset_string_hash_func, pa_idxset_string_compare_func, NULL,
1526                                      (pa_free_cb_t) device_free);
1527     y->transports = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
1528     PA_LLIST_HEAD_INIT(pa_dbus_pending, y->pending);
1529
1530     for (i = 0; i < PA_BLUETOOTH_HOOK_MAX; i++)
1531         pa_hook_init(&y->hooks[i], y);
1532
1533     pa_shared_set(c, "bluetooth-discovery", y);
1534
1535     dbus_error_init(&err);
1536
1537     if (!(y->connection = pa_dbus_bus_get(y->core, DBUS_BUS_SYSTEM, &err))) {
1538         pa_log_error("Failed to get D-Bus connection: %s", err.message);
1539         goto fail;
1540     }
1541
1542     conn = pa_dbus_connection_get(y->connection);
1543
1544     /* dynamic detection of bluetooth audio devices */
1545     if (!dbus_connection_add_filter(conn, filter_cb, y, NULL)) {
1546         pa_log_error("Failed to add filter function");
1547         goto fail;
1548     }
1549     y->filter_added = true;
1550
1551     if (pa_dbus_add_matches(conn, &err,
1552             "type='signal',sender='org.freedesktop.DBus',interface='org.freedesktop.DBus',member='NameOwnerChanged'"
1553             ",arg0='" BLUEZ_SERVICE "'",
1554             "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.ObjectManager',member='InterfacesAdded'",
1555             "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.ObjectManager',"
1556             "member='InterfacesRemoved'",
1557             "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.Properties',member='PropertiesChanged'"
1558             ",arg0='" BLUEZ_ADAPTER_INTERFACE "'",
1559             "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.Properties',member='PropertiesChanged'"
1560             ",arg0='" BLUEZ_DEVICE_INTERFACE "'",
1561             "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.Properties',member='PropertiesChanged'"
1562             ",arg0='" BLUEZ_MEDIA_TRANSPORT_INTERFACE "'",
1563             NULL) < 0) {
1564         pa_log_error("Failed to add D-Bus matches: %s", err.message);
1565         goto fail;
1566     }
1567     y->matches_added = true;
1568
1569     endpoint_init(y, PA_BLUETOOTH_PROFILE_A2DP_SINK);
1570     endpoint_init(y, PA_BLUETOOTH_PROFILE_A2DP_SOURCE);
1571
1572     get_managed_objects(y);
1573
1574     return y;
1575
1576 fail:
1577     pa_bluetooth_discovery_unref(y);
1578     dbus_error_free(&err);
1579
1580     return NULL;
1581 }
1582
1583 pa_bluetooth_discovery* pa_bluetooth_discovery_ref(pa_bluetooth_discovery *y) {
1584     pa_assert(y);
1585     pa_assert(PA_REFCNT_VALUE(y) > 0);
1586
1587     PA_REFCNT_INC(y);
1588
1589     return y;
1590 }
1591
1592 void pa_bluetooth_discovery_unref(pa_bluetooth_discovery *y) {
1593     pa_assert(y);
1594     pa_assert(PA_REFCNT_VALUE(y) > 0);
1595
1596     if (PA_REFCNT_DEC(y) > 0)
1597         return;
1598
1599     pa_dbus_free_pending_list(&y->pending);
1600
1601     if (y->devices)
1602         pa_hashmap_free(y->devices);
1603
1604     if (y->adapters)
1605         pa_hashmap_free(y->adapters);
1606
1607     if (y->transports) {
1608         pa_assert(pa_hashmap_isempty(y->transports));
1609         pa_hashmap_free(y->transports);
1610     }
1611
1612     if (y->connection) {
1613
1614         if (y->matches_added)
1615             pa_dbus_remove_matches(pa_dbus_connection_get(y->connection),
1616                 "type='signal',sender='org.freedesktop.DBus',interface='org.freedesktop.DBus',member='NameOwnerChanged',"
1617                 "arg0='" BLUEZ_SERVICE "'",
1618                 "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.ObjectManager',"
1619                 "member='InterfacesAdded'",
1620                 "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.ObjectManager',"
1621                 "member='InterfacesRemoved'",
1622                 "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.Properties',"
1623                 "member='PropertiesChanged',arg0='" BLUEZ_ADAPTER_INTERFACE "'",
1624                 "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.Properties',"
1625                 "member='PropertiesChanged',arg0='" BLUEZ_DEVICE_INTERFACE "'",
1626                 "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.Properties',"
1627                 "member='PropertiesChanged',arg0='" BLUEZ_MEDIA_TRANSPORT_INTERFACE "'",
1628                 NULL);
1629
1630         if (y->filter_added)
1631             dbus_connection_remove_filter(pa_dbus_connection_get(y->connection), filter_cb, y);
1632
1633         endpoint_done(y, PA_BLUETOOTH_PROFILE_A2DP_SINK);
1634         endpoint_done(y, PA_BLUETOOTH_PROFILE_A2DP_SOURCE);
1635
1636         pa_dbus_connection_unref(y->connection);
1637     }
1638
1639     pa_shared_remove(y->core, "bluetooth-discovery");
1640     pa_xfree(y);
1641 }