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 (pa_streq(d->address, remote) && pa_streq(d->adapter->address, local))
 399             return d->device_info_valid == 1 ? d : NULL;
 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     d->discovery = NULL;
 423     d->adapter = NULL;
 424     pa_xfree(d->path);
 425     pa_xfree(d->alias);
 426     pa_xfree(d->address);
 427     pa_xfree(d);
 428 }
 429
 430 static void device_remove(pa_bluetooth_discovery *y, const char *path) {
 431     pa_bluetooth_device *d;
 432
 433     if (!(d = pa_hashmap_remove(y->devices, path)))
 434         pa_log_warn("Unknown device removed %s", path);
 435     else {
 436         pa_log_debug("Device %s removed", path);
 437         device_free(d);
 438     }
 439 }
 440
 441 static void device_remove_all(pa_bluetooth_discovery *y) {
 442     pa_bluetooth_device *d;
 443
 444     pa_assert(y);
 445
 446     while ((d = pa_hashmap_steal_first(y->devices))) {
 447         d->device_info_valid = -1;
 448         pa_hook_fire(&y->hooks[PA_BLUETOOTH_HOOK_DEVICE_CONNECTION_CHANGED], d);
 449         device_free(d);
 450    }
 451 }
 452
 453 static pa_bluetooth_adapter* adapter_create(pa_bluetooth_discovery *y, const char *path) {
 454     pa_bluetooth_adapter *a;
 455
 456     pa_assert(y);
 457     pa_assert(path);
 458
 459     a = pa_xnew0(pa_bluetooth_adapter, 1);
 460     a->discovery = y;
 461     a->path = pa_xstrdup(path);
 462
 463     pa_hashmap_put(y->adapters, a->path, a);
 464
 465     return a;
 466 }
 467
 468 static void adapter_free(pa_bluetooth_adapter *a) {
 469     pa_bluetooth_device *d;
 470     void *state;
 471
 472     pa_assert(a);
 473     pa_assert(a->discovery);
 474
 475     PA_HASHMAP_FOREACH(d, a->discovery->devices, state)
 476         if (d->adapter == a)
 477             d->adapter = NULL;
 478
 479     pa_xfree(a->path);
 480     pa_xfree(a->address);
 481     pa_xfree(a);
 482 }
 483
 484 static void adapter_remove(pa_bluetooth_discovery *y, const char *path) {
 485     pa_bluetooth_adapter *a;
 486
 487     if (!(a = pa_hashmap_remove(y->adapters, path)))
 488         pa_log_warn("Unknown adapter removed %s", path);
 489     else {
 490         pa_log_debug("Adapter %s removed", path);
 491         adapter_free(a);
 492     }
 493 }
 494
 495 static void adapter_remove_all(pa_bluetooth_discovery *y) {
 496     pa_bluetooth_adapter *a;
 497
 498     pa_assert(y);
 499
 500     /* When this function is called all devices have already been freed */
 501
 502     while ((a = pa_hashmap_steal_first(y->adapters)))
 503         adapter_free(a);
 504 }
 505
 506 static void parse_device_property(pa_bluetooth_device *d, DBusMessageIter *i, bool is_property_change) {
 507     const char *key;
 508     DBusMessageIter variant_i;
 509
 510     pa_assert(d);
 511
 512     key = check_variant_property(i);
 513     if (key == NULL) {
 514         pa_log_error("Received invalid property for device %s", d->path);
 515         return;
 516     }
 517
 518     dbus_message_iter_recurse(i, &variant_i);
 519
 520     switch (dbus_message_iter_get_arg_type(&variant_i)) {
 521
 522         case DBUS_TYPE_STRING: {
 523             const char *value;
 524             dbus_message_iter_get_basic(&variant_i, &value);
 525
 526             if (pa_streq(key, "Alias")) {
 527                 pa_xfree(d->alias);
 528                 d->alias = pa_xstrdup(value);
 529                 pa_log_debug("%s: %s", key, value);
 530             } else if (pa_streq(key, "Address")) {
 531                 if (is_property_change) {
 532                     pa_log_warn("Device property 'Address' expected to be constant but changed for %s, ignoring", d->path);
 533                     return;
 534                 }
 535
 536                 if (d->address) {
 537                     pa_log_warn("Device %s: Received a duplicate 'Address' property, ignoring", d->path);
 538                     return;
 539                 }
 540
 541                 d->address = pa_xstrdup(value);
 542                 pa_log_debug("%s: %s", key, value);
 543             }
 544
 545             break;
 546         }
 547
 548         case DBUS_TYPE_OBJECT_PATH: {
 549             const char *value;
 550             dbus_message_iter_get_basic(&variant_i, &value);
 551
 552             if (pa_streq(key, "Adapter")) {
 553
 554                 if (is_property_change) {
 555                     pa_log_warn("Device property 'Adapter' expected to be constant but changed for %s, ignoring", d->path);
 556                     return;
 557                 }
 558
 559                 if (d->adapter_path) {
 560                     pa_log_warn("Device %s: Received a duplicate 'Adapter' property, ignoring", d->path);
 561                     return;
 562                 }
 563
 564                 d->adapter_path = pa_xstrdup(value);
 565
 566                 d->adapter = pa_hashmap_get(d->discovery->adapters, value);
 567                 if (!d->adapter)
 568                     pa_log_info("Device %s: 'Adapter' property references an unknown adapter %s.", d->path, value);
 569
 570                 pa_log_debug("%s: %s", key, value);
 571             }
 572
 573             break;
 574         }
 575
 576         case DBUS_TYPE_UINT32: {
 577             uint32_t value;
 578             dbus_message_iter_get_basic(&variant_i, &value);
 579
 580             if (pa_streq(key, "Class")) {
 581                 d->class_of_device = value;
 582                 pa_log_debug("%s: %d", key, value);
 583             }
 584
 585             break;
 586         }
 587
 588         case DBUS_TYPE_ARRAY: {
 589             DBusMessageIter ai;
 590             dbus_message_iter_recurse(&variant_i, &ai);
 591
 592             if (dbus_message_iter_get_arg_type(&ai) == DBUS_TYPE_STRING && pa_streq(key, "UUIDs")) {
 593                 /* bluetoothd never removes UUIDs from a device object so there
 594                  * is no need to handle it here. */
 595                 while (dbus_message_iter_get_arg_type(&ai) != DBUS_TYPE_INVALID) {
 596                     const char *value;
 597                     char *uuid;
 598
 599                     dbus_message_iter_get_basic(&ai, &value);
 600
 601                     if (pa_hashmap_get(d->uuids, value)) {
 602                         dbus_message_iter_next(&ai);
 603                         continue;
 604                     }
 605
 606                     uuid = pa_xstrdup(value);
 607                     pa_hashmap_put(d->uuids, uuid, uuid);
 608
 609                     pa_log_debug("%s: %s", key, value);
 610                     dbus_message_iter_next(&ai);
 611                 }
 612             }
 613
 614             break;
 615         }
 616     }
 617 }
 618
 619 static int parse_device_properties(pa_bluetooth_device *d, DBusMessageIter *i, bool is_property_change) {
 620     DBusMessageIter element_i;
 621     int ret = 0;
 622
 623     dbus_message_iter_recurse(i, &element_i);
 624
 625     while (dbus_message_iter_get_arg_type(&element_i) == DBUS_TYPE_DICT_ENTRY) {
 626         DBusMessageIter dict_i;
 627
 628         dbus_message_iter_recurse(&element_i, &dict_i);
 629         parse_device_property(d, &dict_i, is_property_change);
 630         dbus_message_iter_next(&element_i);
 631     }
 632
 633     if (!d->address || !d->adapter_path || !d->alias) {
 634         pa_log_error("Non-optional information missing for device %s", d->path);
 635         d->device_info_valid = -1;
 636         return -1;
 637     }
 638
 639     d->device_info_valid = 1;
 640     return ret;
 641 }
 642
 643 static void parse_adapter_properties(pa_bluetooth_adapter *a, DBusMessageIter *i, bool is_property_change) {
 644     DBusMessageIter element_i;
 645
 646     pa_assert(a);
 647
 648     dbus_message_iter_recurse(i, &element_i);
 649
 650     while (dbus_message_iter_get_arg_type(&element_i) == DBUS_TYPE_DICT_ENTRY) {
 651         DBusMessageIter dict_i, variant_i;
 652         const char *key;
 653
 654         dbus_message_iter_recurse(&element_i, &dict_i);
 655
 656         key = check_variant_property(&dict_i);
 657         if (key == NULL) {
 658             pa_log_error("Received invalid property for adapter %s", a->path);
 659             return;
 660         }
 661
 662         dbus_message_iter_recurse(&dict_i, &variant_i);
 663
 664         if (dbus_message_iter_get_arg_type(&variant_i) == DBUS_TYPE_STRING && pa_streq(key, "Address")) {
 665             char *value;
 666
 667             if (is_property_change) {
 668                 pa_log_warn("Adapter property 'Address' expected to be constant but changed for %s, ignoring", a->path);
 669                 return;
 670             }
 671
 672             if (a->address) {
 673                 pa_log_warn("Adapter %s received a duplicate 'Address' property, ignoring", a->path);
 674                 return;
 675             }
 676
 677             dbus_message_iter_get_basic(&variant_i, &value);
 678             a->address = pa_xstrdup(value);
 679         }
 680
 681         dbus_message_iter_next(&element_i);
 682     }
 683 }
 684
 685 static void register_endpoint_reply(DBusPendingCall *pending, void *userdata) {
 686     DBusMessage *r;
 687     pa_dbus_pending *p;
 688     pa_bluetooth_discovery *y;
 689     char *endpoint;
 690
 691     pa_assert(pending);
 692     pa_assert_se(p = userdata);
 693     pa_assert_se(y = p->context_data);
 694     pa_assert_se(endpoint = p->call_data);
 695     pa_assert_se(r = dbus_pending_call_steal_reply(pending));
 696
 697     if (dbus_message_is_error(r, BLUEZ_ERROR_NOT_SUPPORTED)) {
 698         pa_log_info("Couldn't register endpoint %s because it is disabled in BlueZ", endpoint);
 699         goto finish;
 700     }
 701
 702     if (dbus_message_get_type(r) == DBUS_MESSAGE_TYPE_ERROR) {
 703         pa_log_error(BLUEZ_MEDIA_INTERFACE ".RegisterEndpoint() failed: %s: %s", dbus_message_get_error_name(r),
 704                      pa_dbus_get_error_message(r));
 705         goto finish;
 706     }
 707
 708 finish:
 709     dbus_message_unref(r);
 710
 711     PA_LLIST_REMOVE(pa_dbus_pending, y->pending, p);
 712     pa_dbus_pending_free(p);
 713
 714     pa_xfree(endpoint);
 715 }
 716
 717 static void register_endpoint(pa_bluetooth_discovery *y, const char *path, const char *endpoint, const char *uuid) {
 718     DBusMessage *m;
 719     DBusMessageIter i, d;
 720     uint8_t codec = 0;
 721
 722     pa_log_debug("Registering %s on adapter %s", endpoint, path);
 723
 724     pa_assert_se(m = dbus_message_new_method_call(BLUEZ_SERVICE, path, BLUEZ_MEDIA_INTERFACE, "RegisterEndpoint"));
 725
 726     dbus_message_iter_init_append(m, &i);
 727     dbus_message_iter_append_basic(&i, DBUS_TYPE_OBJECT_PATH, &endpoint);
 728     dbus_message_iter_open_container(&i, DBUS_TYPE_ARRAY, DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING DBUS_TYPE_STRING_AS_STRING
 729                                          DBUS_TYPE_VARIANT_AS_STRING DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &d);
 730     pa_dbus_append_basic_variant_dict_entry(&d, "UUID", DBUS_TYPE_STRING, &uuid);
 731     pa_dbus_append_basic_variant_dict_entry(&d, "Codec", DBUS_TYPE_BYTE, &codec);
 732
 733     if (pa_streq(uuid, PA_BLUETOOTH_UUID_A2DP_SOURCE) || pa_streq(uuid, PA_BLUETOOTH_UUID_A2DP_SINK)) {
 734         a2dp_sbc_t capabilities;
 735
 736         capabilities.channel_mode = SBC_CHANNEL_MODE_MONO | SBC_CHANNEL_MODE_DUAL_CHANNEL | SBC_CHANNEL_MODE_STEREO |
 737                                     SBC_CHANNEL_MODE_JOINT_STEREO;
 738         capabilities.frequency = SBC_SAMPLING_FREQ_16000 | SBC_SAMPLING_FREQ_32000 | SBC_SAMPLING_FREQ_44100 |
 739                                  SBC_SAMPLING_FREQ_48000;
 740         capabilities.allocation_method = SBC_ALLOCATION_SNR | SBC_ALLOCATION_LOUDNESS;
 741         capabilities.subbands = SBC_SUBBANDS_4 | SBC_SUBBANDS_8;
 742         capabilities.block_length = SBC_BLOCK_LENGTH_4 | SBC_BLOCK_LENGTH_8 | SBC_BLOCK_LENGTH_12 | SBC_BLOCK_LENGTH_16;
 743         capabilities.min_bitpool = MIN_BITPOOL;
 744         capabilities.max_bitpool = MAX_BITPOOL;
 745
 746         pa_dbus_append_basic_array_variant_dict_entry(&d, "Capabilities", DBUS_TYPE_BYTE, &capabilities, sizeof(capabilities));
 747     }
 748
 749     dbus_message_iter_close_container(&i, &d);
 750
 751     send_and_add_to_pending(y, m, register_endpoint_reply, pa_xstrdup(endpoint));
 752 }
 753
 754 static void parse_interfaces_and_properties(pa_bluetooth_discovery *y, DBusMessageIter *dict_i) {
 755     DBusMessageIter element_i;
 756     const char *path;
 757     void *state;
 758     pa_bluetooth_device *d;
 759
 760     pa_assert(dbus_message_iter_get_arg_type(dict_i) == DBUS_TYPE_OBJECT_PATH);
 761     dbus_message_iter_get_basic(dict_i, &path);
 762
 763     pa_assert_se(dbus_message_iter_next(dict_i));
 764     pa_assert(dbus_message_iter_get_arg_type(dict_i) == DBUS_TYPE_ARRAY);
 765
 766     dbus_message_iter_recurse(dict_i, &element_i);
 767
 768     while (dbus_message_iter_get_arg_type(&element_i) == DBUS_TYPE_DICT_ENTRY) {
 769         DBusMessageIter iface_i;
 770         const char *interface;
 771
 772         dbus_message_iter_recurse(&element_i, &iface_i);
 773
 774         pa_assert(dbus_message_iter_get_arg_type(&iface_i) == DBUS_TYPE_STRING);
 775         dbus_message_iter_get_basic(&iface_i, &interface);
 776
 777         pa_assert_se(dbus_message_iter_next(&iface_i));
 778         pa_assert(dbus_message_iter_get_arg_type(&iface_i) == DBUS_TYPE_ARRAY);
 779
 780         if (pa_streq(interface, BLUEZ_ADAPTER_INTERFACE)) {
 781             pa_bluetooth_adapter *a;
 782
 783             if ((a = pa_hashmap_get(y->adapters, path))) {
 784                 pa_log_error("Found duplicated D-Bus path for device %s", path);
 785                 return;
 786             } else
 787                 a = adapter_create(y, path);
 788
 789             pa_log_debug("Adapter %s found", path);
 790
 791             parse_adapter_properties(a, &iface_i, false);
 792             if (!a->address)
 793                 return;
 794
 795             register_endpoint(y, path, A2DP_SOURCE_ENDPOINT, PA_BLUETOOTH_UUID_A2DP_SOURCE);
 796             register_endpoint(y, path, A2DP_SINK_ENDPOINT, PA_BLUETOOTH_UUID_A2DP_SINK);
 797
 798         } else if (pa_streq(interface, BLUEZ_DEVICE_INTERFACE)) {
 799
 800             if ((d = pa_hashmap_get(y->devices, path))) {
 801                 if (d->device_info_valid != 0) {
 802                     pa_log_error("Found duplicated D-Bus path for device %s", path);
 803                     return;
 804                 }
 805             } else
 806                 d = device_create(y, path);
 807
 808             pa_log_debug("Device %s found", d->path);
 809
 810             parse_device_properties(d, &iface_i, false);
 811
 812         } else
 813             pa_log_debug("Unknown interface %s found, skipping", interface);
 814
 815         dbus_message_iter_next(&element_i);
 816     }
 817
 818     PA_HASHMAP_FOREACH(d, y->devices, state)
 819         if (!d->adapter && d->adapter_path) {
 820             d->adapter = pa_hashmap_get(d->discovery->adapters, d->adapter_path);
 821             if (!d->adapter) {
 822                 pa_log_error("Device %s is child of nonexistent adapter %s", d->path, d->adapter_path);
 823                 d->device_info_valid = -1;
 824             }
 825         }
 826
 827     return;
 828 }
 829
 830 static void get_managed_objects_reply(DBusPendingCall *pending, void *userdata) {
 831     pa_dbus_pending *p;
 832     pa_bluetooth_discovery *y;
 833     DBusMessage *r;
 834     DBusMessageIter arg_i, element_i;
 835
 836     pa_assert_se(p = userdata);
 837     pa_assert_se(y = p->context_data);
 838     pa_assert_se(r = dbus_pending_call_steal_reply(pending));
 839
 840     if (dbus_message_is_error(r, DBUS_ERROR_UNKNOWN_METHOD)) {
 841         pa_log_warn("BlueZ D-Bus ObjectManager not available");
 842         goto finish;
 843     }
 844
 845     if (dbus_message_get_type(r) == DBUS_MESSAGE_TYPE_ERROR) {
 846         pa_log_error("GetManagedObjects() failed: %s: %s", dbus_message_get_error_name(r), pa_dbus_get_error_message(r));
 847         goto finish;
 848     }
 849
 850     if (!dbus_message_iter_init(r, &arg_i) || !pa_streq(dbus_message_get_signature(r), "a{oa{sa{sv}}}")) {
 851         pa_log_error("Invalid reply signature for GetManagedObjects()");
 852         goto finish;
 853     }
 854
 855     dbus_message_iter_recurse(&arg_i, &element_i);
 856     while (dbus_message_iter_get_arg_type(&element_i) == DBUS_TYPE_DICT_ENTRY) {
 857         DBusMessageIter dict_i;
 858
 859         dbus_message_iter_recurse(&element_i, &dict_i);
 860
 861         parse_interfaces_and_properties(y, &dict_i);
 862
 863         dbus_message_iter_next(&element_i);
 864     }
 865
 866     y->objects_listed = true;
 867
 868 finish:
 869     dbus_message_unref(r);
 870
 871     PA_LLIST_REMOVE(pa_dbus_pending, y->pending, p);
 872     pa_dbus_pending_free(p);
 873 }
 874
 875 static void get_managed_objects(pa_bluetooth_discovery *y) {
 876     DBusMessage *m;
 877
 878     pa_assert(y);
 879
 880     pa_assert_se(m = dbus_message_new_method_call(BLUEZ_SERVICE, "/", "org.freedesktop.DBus.ObjectManager",
 881                                                   "GetManagedObjects"));
 882     send_and_add_to_pending(y, m, get_managed_objects_reply, NULL);
 883 }
 884
 885 pa_hook* pa_bluetooth_discovery_hook(pa_bluetooth_discovery *y, pa_bluetooth_hook_t hook) {
 886     pa_assert(y);
 887     pa_assert(PA_REFCNT_VALUE(y) > 0);
 888
 889     return &y->hooks[hook];
 890 }
 891
 892 static DBusHandlerResult filter_cb(DBusConnection *bus, DBusMessage *m, void *userdata) {
 893     pa_bluetooth_discovery *y;
 894     DBusError err;
 895
 896     pa_assert(bus);
 897     pa_assert(m);
 898     pa_assert_se(y = userdata);
 899
 900     dbus_error_init(&err);
 901
 902     if (dbus_message_is_signal(m, "org.freedesktop.DBus", "NameOwnerChanged")) {
 903         const char *name, *old_owner, *new_owner;
 904
 905         if (!dbus_message_get_args(m, &err,
 906                                    DBUS_TYPE_STRING, &name,
 907                                    DBUS_TYPE_STRING, &old_owner,
 908                                    DBUS_TYPE_STRING, &new_owner,
 909                                    DBUS_TYPE_INVALID)) {
 910             pa_log_error("Failed to parse org.freedesktop.DBus.NameOwnerChanged: %s", err.message);
 911             goto fail;
 912         }
 913
 914         if (pa_streq(name, BLUEZ_SERVICE)) {
 915             if (old_owner && *old_owner) {
 916                 pa_log_debug("Bluetooth daemon disappeared");
 917                 device_remove_all(y);
 918                 adapter_remove_all(y);
 919                 y->objects_listed = false;
 920             }
 921
 922             if (new_owner && *new_owner) {
 923                 pa_log_debug("Bluetooth daemon appeared");
 924                 get_managed_objects(y);
 925             }
 926         }
 927
 928         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 929     } else if (dbus_message_is_signal(m, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded")) {
 930         DBusMessageIter arg_i;
 931
 932         if (!y->objects_listed)
 933             return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; /* No reply received yet from GetManagedObjects */
 934
 935         if (!dbus_message_iter_init(m, &arg_i) || !pa_streq(dbus_message_get_signature(m), "oa{sa{sv}}")) {
 936             pa_log_error("Invalid signature found in InterfacesAdded");
 937             goto fail;
 938         }
 939
 940         parse_interfaces_and_properties(y, &arg_i);
 941
 942         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 943     } else if (dbus_message_is_signal(m, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved")) {
 944         const char *p;
 945         DBusMessageIter arg_i;
 946         DBusMessageIter element_i;
 947
 948         if (!y->objects_listed)
 949             return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; /* No reply received yet from GetManagedObjects */
 950
 951         if (!dbus_message_iter_init(m, &arg_i) || !pa_streq(dbus_message_get_signature(m), "oas")) {
 952             pa_log_error("Invalid signature found in InterfacesRemoved");
 953             goto fail;
 954         }
 955
 956         dbus_message_iter_get_basic(&arg_i, &p);
 957
 958         pa_assert_se(dbus_message_iter_next(&arg_i));
 959         pa_assert(dbus_message_iter_get_arg_type(&arg_i) == DBUS_TYPE_ARRAY);
 960
 961         dbus_message_iter_recurse(&arg_i, &element_i);
 962
 963         while (dbus_message_iter_get_arg_type(&element_i) == DBUS_TYPE_STRING) {
 964             const char *iface;
 965
 966             dbus_message_iter_get_basic(&element_i, &iface);
 967
 968             if (pa_streq(iface, BLUEZ_DEVICE_INTERFACE))
 969                 device_remove(y, p);
 970             else if (pa_streq(iface, BLUEZ_ADAPTER_INTERFACE))
 971                 adapter_remove(y, p);
 972
 973             dbus_message_iter_next(&element_i);
 974         }
 975
 976         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 977
 978     } else if (dbus_message_is_signal(m, "org.freedesktop.DBus.Properties", "PropertiesChanged")) {
 979         DBusMessageIter arg_i;
 980         const char *iface;
 981
 982         if (!y->objects_listed)
 983             return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; /* No reply received yet from GetManagedObjects */
 984
 985         if (!dbus_message_iter_init(m, &arg_i) || !pa_streq(dbus_message_get_signature(m), "sa{sv}as")) {
 986             pa_log_error("Invalid signature found in PropertiesChanged");
 987             goto fail;
 988         }
 989
 990         dbus_message_iter_get_basic(&arg_i, &iface);
 991
 992         pa_assert_se(dbus_message_iter_next(&arg_i));
 993         pa_assert(dbus_message_iter_get_arg_type(&arg_i) == DBUS_TYPE_ARRAY);
 994
 995         if (pa_streq(iface, BLUEZ_ADAPTER_INTERFACE)) {
 996             pa_bluetooth_adapter *a;
 997
 998             pa_log_debug("Properties changed in adapter %s", dbus_message_get_path(m));
 999
1000             if (!(a = pa_hashmap_get(y->adapters, dbus_message_get_path(m)))) {
1001                 pa_log_warn("Properties changed in unknown adapter");
1002                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1003             }
1004
1005             parse_adapter_properties(a, &arg_i, true);
1006
1007         } else if (pa_streq(iface, BLUEZ_DEVICE_INTERFACE)) {
1008             pa_bluetooth_device *d;
1009
1010             pa_log_debug("Properties changed in device %s", dbus_message_get_path(m));
1011
1012             if (!(d = pa_hashmap_get(y->devices, dbus_message_get_path(m)))) {
1013                 pa_log_warn("Properties changed in unknown device");
1014                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1015             }
1016
1017             if (d->device_info_valid != 1) {
1018                 pa_log_warn("Properties changed in a device which information is unknown or invalid");
1019                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1020             }
1021
1022             parse_device_properties(d, &arg_i, true);
1023         } else if (pa_streq(iface, BLUEZ_MEDIA_TRANSPORT_INTERFACE)) {
1024             pa_bluetooth_transport *t;
1025
1026             pa_log_debug("Properties changed in transport %s", dbus_message_get_path(m));
1027
1028             if (!(t = pa_hashmap_get(y->transports, dbus_message_get_path(m))))
1029                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1030
1031             parse_transport_properties(t, &arg_i);
1032         }
1033
1034         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1035     }
1036
1037 fail:
1038     dbus_error_free(&err);
1039
1040     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1041 }
1042
1043 static uint8_t a2dp_default_bitpool(uint8_t freq, uint8_t mode) {
1044     /* These bitpool values were chosen based on the A2DP spec recommendation */
1045     switch (freq) {
1046         case SBC_SAMPLING_FREQ_16000:
1047         case SBC_SAMPLING_FREQ_32000:
1048             return 53;
1049
1050         case SBC_SAMPLING_FREQ_44100:
1051
1052             switch (mode) {
1053                 case SBC_CHANNEL_MODE_MONO:
1054                 case SBC_CHANNEL_MODE_DUAL_CHANNEL:
1055                     return 31;
1056
1057                 case SBC_CHANNEL_MODE_STEREO:
1058                 case SBC_CHANNEL_MODE_JOINT_STEREO:
1059                     return 53;
1060             }
1061
1062             pa_log_warn("Invalid channel mode %u", mode);
1063             return 53;
1064
1065         case SBC_SAMPLING_FREQ_48000:
1066
1067             switch (mode) {
1068                 case SBC_CHANNEL_MODE_MONO:
1069                 case SBC_CHANNEL_MODE_DUAL_CHANNEL:
1070                     return 29;
1071
1072                 case SBC_CHANNEL_MODE_STEREO:
1073                 case SBC_CHANNEL_MODE_JOINT_STEREO:
1074                     return 51;
1075             }
1076
1077             pa_log_warn("Invalid channel mode %u", mode);
1078             return 51;
1079     }
1080
1081     pa_log_warn("Invalid sampling freq %u", freq);
1082     return 53;
1083 }
1084
1085 const char *pa_bluetooth_profile_to_string(pa_bluetooth_profile_t profile) {
1086     switch(profile) {
1087         case PA_BLUETOOTH_PROFILE_A2DP_SINK:
1088             return "a2dp_sink";
1089         case PA_BLUETOOTH_PROFILE_A2DP_SOURCE:
1090             return "a2dp_source";
1091         case PA_BLUETOOTH_PROFILE_OFF:
1092             return "off";
1093     }
1094
1095     return NULL;
1096 }
1097
1098 static DBusMessage *endpoint_set_configuration(DBusConnection *conn, DBusMessage *m, void *userdata) {
1099     pa_bluetooth_discovery *y = userdata;
1100     pa_bluetooth_device *d;
1101     pa_bluetooth_transport *t;
1102     const char *sender, *path, *endpoint_path, *dev_path = NULL, *uuid = NULL;
1103     const uint8_t *config = NULL;
1104     int size = 0;
1105     pa_bluetooth_profile_t p = PA_BLUETOOTH_PROFILE_OFF;
1106     DBusMessageIter args, props;
1107     DBusMessage *r;
1108
1109     if (!dbus_message_iter_init(m, &args) || !pa_streq(dbus_message_get_signature(m), "oa{sv}")) {
1110         pa_log_error("Invalid signature for method SetConfiguration()");
1111         goto fail2;
1112     }
1113
1114     dbus_message_iter_get_basic(&args, &path);
1115
1116     if (pa_hashmap_get(y->transports, path)) {
1117         pa_log_error("Endpoint SetConfiguration(): Transport %s is already configured.", path);
1118         goto fail2;
1119     }
1120
1121     pa_assert_se(dbus_message_iter_next(&args));
1122
1123     dbus_message_iter_recurse(&args, &props);
1124     if (dbus_message_iter_get_arg_type(&props) != DBUS_TYPE_DICT_ENTRY)
1125         goto fail;
1126
1127     /* Read transport properties */
1128     while (dbus_message_iter_get_arg_type(&props) == DBUS_TYPE_DICT_ENTRY) {
1129         const char *key;
1130         DBusMessageIter value, entry;
1131         int var;
1132
1133         dbus_message_iter_recurse(&props, &entry);
1134         dbus_message_iter_get_basic(&entry, &key);
1135
1136         dbus_message_iter_next(&entry);
1137         dbus_message_iter_recurse(&entry, &value);
1138
1139         var = dbus_message_iter_get_arg_type(&value);
1140
1141         if (pa_streq(key, "UUID")) {
1142             if (var != DBUS_TYPE_STRING) {
1143                 pa_log_error("Property %s of wrong type %c", key, (char)var);
1144                 goto fail;
1145             }
1146
1147             dbus_message_iter_get_basic(&value, &uuid);
1148
1149             endpoint_path = dbus_message_get_path(m);
1150             if (pa_streq(endpoint_path, A2DP_SOURCE_ENDPOINT)) {
1151                 if (pa_streq(uuid, PA_BLUETOOTH_UUID_A2DP_SOURCE))
1152                     p = PA_BLUETOOTH_PROFILE_A2DP_SINK;
1153             } else if (pa_streq(endpoint_path, A2DP_SINK_ENDPOINT)) {
1154                 if (pa_streq(uuid, PA_BLUETOOTH_UUID_A2DP_SINK))
1155                     p = PA_BLUETOOTH_PROFILE_A2DP_SOURCE;
1156             }
1157
1158             if (p == PA_BLUETOOTH_PROFILE_OFF) {
1159                 pa_log_error("UUID %s of transport %s incompatible with endpoint %s", uuid, path, endpoint_path);
1160                 goto fail;
1161             }
1162         } else if (pa_streq(key, "Device")) {
1163             if (var != DBUS_TYPE_OBJECT_PATH) {
1164                 pa_log_error("Property %s of wrong type %c", key, (char)var);
1165                 goto fail;
1166             }
1167
1168             dbus_message_iter_get_basic(&value, &dev_path);
1169         } else if (pa_streq(key, "Configuration")) {
1170             DBusMessageIter array;
1171             a2dp_sbc_t *c;
1172
1173             if (var != DBUS_TYPE_ARRAY) {
1174                 pa_log_error("Property %s of wrong type %c", key, (char)var);
1175                 goto fail;
1176             }
1177
1178             dbus_message_iter_recurse(&value, &array);
1179             var = dbus_message_iter_get_arg_type(&array);
1180             if (var != DBUS_TYPE_BYTE) {
1181                 pa_log_error("%s is an array of wrong type %c", key, (char)var);
1182                 goto fail;
1183             }
1184
1185             dbus_message_iter_get_fixed_array(&array, &config, &size);
1186             if (size != sizeof(a2dp_sbc_t)) {
1187                 pa_log_error("Configuration array of invalid size");
1188                 goto fail;
1189             }
1190
1191             c = (a2dp_sbc_t *) config;
1192
1193             if (c->frequency != SBC_SAMPLING_FREQ_16000 && c->frequency != SBC_SAMPLING_FREQ_32000 &&
1194                 c->frequency != SBC_SAMPLING_FREQ_44100 && c->frequency != SBC_SAMPLING_FREQ_48000) {
1195                 pa_log_error("Invalid sampling frequency in configuration");
1196                 goto fail;
1197             }
1198
1199             if (c->channel_mode != SBC_CHANNEL_MODE_MONO && c->channel_mode != SBC_CHANNEL_MODE_DUAL_CHANNEL &&
1200                 c->channel_mode != SBC_CHANNEL_MODE_STEREO && c->channel_mode != SBC_CHANNEL_MODE_JOINT_STEREO) {
1201                 pa_log_error("Invalid channel mode in configuration");
1202                 goto fail;
1203             }
1204
1205             if (c->allocation_method != SBC_ALLOCATION_SNR && c->allocation_method != SBC_ALLOCATION_LOUDNESS) {
1206                 pa_log_error("Invalid allocation method in configuration");
1207                 goto fail;
1208             }
1209
1210             if (c->subbands != SBC_SUBBANDS_4 && c->subbands != SBC_SUBBANDS_8) {
1211                 pa_log_error("Invalid SBC subbands in configuration");
1212                 goto fail;
1213             }
1214
1215             if (c->block_length != SBC_BLOCK_LENGTH_4 && c->block_length != SBC_BLOCK_LENGTH_8 &&
1216                 c->block_length != SBC_BLOCK_LENGTH_12 && c->block_length != SBC_BLOCK_LENGTH_16) {
1217                 pa_log_error("Invalid block length in configuration");
1218                 goto fail;
1219             }
1220         }
1221
1222         dbus_message_iter_next(&props);
1223     }
1224
1225     if ((d = pa_hashmap_get(y->devices, dev_path))) {
1226         if (d->device_info_valid == -1) {
1227             pa_log_error("Information about device %s is invalid", dev_path);
1228             goto fail2;
1229         }
1230     } else {
1231         /* InterfacesAdded signal is probably on it's way, device_info_valid is kept as 0. */
1232         pa_log_warn("SetConfiguration() received for unknown device %s", dev_path);
1233         d = device_create(y, dev_path);
1234     }
1235
1236     if (d->transports[p] != NULL) {
1237         pa_log_error("Cannot configure transport %s because profile %s is already used", path, pa_bluetooth_profile_to_string(p));
1238         goto fail2;
1239     }
1240
1241     sender = dbus_message_get_sender(m);
1242
1243     pa_assert_se(r = dbus_message_new_method_return(m));
1244     pa_assert_se(dbus_connection_send(pa_dbus_connection_get(y->connection), r, NULL));
1245     dbus_message_unref(r);
1246
1247     d->transports[p] = t = pa_bluetooth_transport_new(d, sender, path, p, config, size);
1248     t->acquire = bluez5_transport_acquire_cb;
1249     t->release = bluez5_transport_release_cb;
1250     pa_bluetooth_transport_put(t);
1251
1252     pa_log_debug("Transport %s available for profile %s", t->path, pa_bluetooth_profile_to_string(t->profile));
1253
1254     return NULL;
1255
1256 fail:
1257     pa_log_error("Endpoint SetConfiguration(): invalid arguments");
1258
1259 fail2:
1260     pa_assert_se(r = dbus_message_new_error(m, "org.bluez.Error.InvalidArguments", "Unable to set configuration"));
1261     return r;
1262 }
1263
1264 static DBusMessage *endpoint_select_configuration(DBusConnection *conn, DBusMessage *m, void *userdata) {
1265     pa_bluetooth_discovery *y = userdata;
1266     a2dp_sbc_t *cap, config;
1267     uint8_t *pconf = (uint8_t *) &config;
1268     int i, size;
1269     DBusMessage *r;
1270     DBusError err;
1271
1272     static const struct {
1273         uint32_t rate;
1274         uint8_t cap;
1275     } freq_table[] = {
1276         { 16000U, SBC_SAMPLING_FREQ_16000 },
1277         { 32000U, SBC_SAMPLING_FREQ_32000 },
1278         { 44100U, SBC_SAMPLING_FREQ_44100 },
1279         { 48000U, SBC_SAMPLING_FREQ_48000 }
1280     };
1281
1282     dbus_error_init(&err);
1283
1284     if (!dbus_message_get_args(m, &err, DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, &cap, &size, DBUS_TYPE_INVALID)) {
1285         pa_log_error("Endpoint SelectConfiguration(): %s", err.message);
1286         dbus_error_free(&err);
1287         goto fail;
1288     }
1289
1290     if (size != sizeof(config)) {
1291         pa_log_error("Capabilities array has invalid size");
1292         goto fail;
1293     }
1294
1295     pa_zero(config);
1296
1297     /* Find the lowest freq that is at least as high as the requested sampling rate */
1298     for (i = 0; (unsigned) i < PA_ELEMENTSOF(freq_table); i++)
1299         if (freq_table[i].rate >= y->core->default_sample_spec.rate && (cap->frequency & freq_table[i].cap)) {
1300             config.frequency = freq_table[i].cap;
1301             break;
1302         }
1303
1304     if ((unsigned) i == PA_ELEMENTSOF(freq_table)) {
1305         for (--i; i >= 0; i--) {
1306             if (cap->frequency & freq_table[i].cap) {
1307                 config.frequency = freq_table[i].cap;
1308                 break;
1309             }
1310         }
1311
1312         if (i < 0) {
1313             pa_log_error("Not suitable sample rate");
1314             goto fail;
1315         }
1316     }
1317
1318     pa_assert((unsigned) i < PA_ELEMENTSOF(freq_table));
1319
1320     if (y->core->default_sample_spec.channels <= 1) {
1321         if (cap->channel_mode & SBC_CHANNEL_MODE_MONO)
1322             config.channel_mode = SBC_CHANNEL_MODE_MONO;
1323         else if (cap->channel_mode & SBC_CHANNEL_MODE_JOINT_STEREO)
1324             config.channel_mode = SBC_CHANNEL_MODE_JOINT_STEREO;
1325         else if (cap->channel_mode & SBC_CHANNEL_MODE_STEREO)
1326             config.channel_mode = SBC_CHANNEL_MODE_STEREO;
1327         else if (cap->channel_mode & SBC_CHANNEL_MODE_DUAL_CHANNEL)
1328             config.channel_mode = SBC_CHANNEL_MODE_DUAL_CHANNEL;
1329         else {
1330             pa_log_error("No supported channel modes");
1331             goto fail;
1332         }
1333     }
1334
1335     if (y->core->default_sample_spec.channels >= 2) {
1336         if (cap->channel_mode & SBC_CHANNEL_MODE_JOINT_STEREO)
1337             config.channel_mode = SBC_CHANNEL_MODE_JOINT_STEREO;
1338         else if (cap->channel_mode & SBC_CHANNEL_MODE_STEREO)
1339             config.channel_mode = SBC_CHANNEL_MODE_STEREO;
1340         else if (cap->channel_mode & SBC_CHANNEL_MODE_DUAL_CHANNEL)
1341             config.channel_mode = SBC_CHANNEL_MODE_DUAL_CHANNEL;
1342         else if (cap->channel_mode & SBC_CHANNEL_MODE_MONO)
1343             config.channel_mode = SBC_CHANNEL_MODE_MONO;
1344         else {
1345             pa_log_error("No supported channel modes");
1346             goto fail;
1347         }
1348     }
1349
1350     if (cap->block_length & SBC_BLOCK_LENGTH_16)
1351         config.block_length = SBC_BLOCK_LENGTH_16;
1352     else if (cap->block_length & SBC_BLOCK_LENGTH_12)
1353         config.block_length = SBC_BLOCK_LENGTH_12;
1354     else if (cap->block_length & SBC_BLOCK_LENGTH_8)
1355         config.block_length = SBC_BLOCK_LENGTH_8;
1356     else if (cap->block_length & SBC_BLOCK_LENGTH_4)
1357         config.block_length = SBC_BLOCK_LENGTH_4;
1358     else {
1359         pa_log_error("No supported block lengths");
1360         goto fail;
1361     }
1362
1363     if (cap->subbands & SBC_SUBBANDS_8)
1364         config.subbands = SBC_SUBBANDS_8;
1365     else if (cap->subbands & SBC_SUBBANDS_4)
1366         config.subbands = SBC_SUBBANDS_4;
1367     else {
1368         pa_log_error("No supported subbands");
1369         goto fail;
1370     }
1371
1372     if (cap->allocation_method & SBC_ALLOCATION_LOUDNESS)
1373         config.allocation_method = SBC_ALLOCATION_LOUDNESS;
1374     else if (cap->allocation_method & SBC_ALLOCATION_SNR)
1375         config.allocation_method = SBC_ALLOCATION_SNR;
1376
1377     config.min_bitpool = (uint8_t) PA_MAX(MIN_BITPOOL, cap->min_bitpool);
1378     config.max_bitpool = (uint8_t) PA_MIN(a2dp_default_bitpool(config.frequency, config.channel_mode), cap->max_bitpool);
1379
1380     if (config.min_bitpool > config.max_bitpool)
1381         goto fail;
1382
1383     pa_assert_se(r = dbus_message_new_method_return(m));
1384     pa_assert_se(dbus_message_append_args(r, DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, &pconf, size, DBUS_TYPE_INVALID));
1385
1386     return r;
1387
1388 fail:
1389     pa_assert_se(r = dbus_message_new_error(m, "org.bluez.Error.InvalidArguments", "Unable to select configuration"));
1390     return r;
1391 }
1392
1393 static DBusMessage *endpoint_clear_configuration(DBusConnection *conn, DBusMessage *m, void *userdata) {
1394     pa_bluetooth_discovery *y = userdata;
1395     pa_bluetooth_transport *t;
1396     DBusMessage *r;
1397     DBusError err;
1398     const char *path;
1399
1400     dbus_error_init(&err);
1401
1402     if (!dbus_message_get_args(m, &err, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) {
1403         pa_log_error("Endpoint ClearConfiguration(): %s", err.message);
1404         dbus_error_free(&err);
1405         goto fail;
1406     }
1407
1408     if ((t = pa_hashmap_get(y->transports, path))) {
1409         pa_log_debug("Clearing transport %s profile %s", t->path, pa_bluetooth_profile_to_string(t->profile));
1410         transport_state_changed(t, PA_BLUETOOTH_TRANSPORT_STATE_DISCONNECTED);
1411         pa_bluetooth_transport_free(t);
1412     }
1413
1414     pa_assert_se(r = dbus_message_new_method_return(m));
1415
1416     return r;
1417
1418 fail:
1419     pa_assert_se(r = dbus_message_new_error(m, "org.bluez.Error.InvalidArguments", "Unable to clear configuration"));
1420     return r;
1421 }
1422
1423 static DBusMessage *endpoint_release(DBusConnection *conn, DBusMessage *m, void *userdata) {
1424     DBusMessage *r;
1425
1426     pa_assert_se(r = dbus_message_new_error(m, BLUEZ_MEDIA_ENDPOINT_INTERFACE ".Error.NotImplemented",
1427                                             "Method not implemented"));
1428
1429     return r;
1430 }
1431
1432 static DBusHandlerResult endpoint_handler(DBusConnection *c, DBusMessage *m, void *userdata) {
1433     struct pa_bluetooth_discovery *y = userdata;
1434     DBusMessage *r = NULL;
1435     const char *path, *interface, *member;
1436
1437     pa_assert(y);
1438
1439     path = dbus_message_get_path(m);
1440     interface = dbus_message_get_interface(m);
1441     member = dbus_message_get_member(m);
1442
1443     pa_log_debug("dbus: path=%s, interface=%s, member=%s", path, interface, member);
1444
1445     if (!pa_streq(path, A2DP_SOURCE_ENDPOINT) && !pa_streq(path, A2DP_SINK_ENDPOINT))
1446         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1447
1448     if (dbus_message_is_method_call(m, "org.freedesktop.DBus.Introspectable", "Introspect")) {
1449         const char *xml = ENDPOINT_INTROSPECT_XML;
1450
1451         pa_assert_se(r = dbus_message_new_method_return(m));
1452         pa_assert_se(dbus_message_append_args(r, DBUS_TYPE_STRING, &xml, DBUS_TYPE_INVALID));
1453
1454     } else if (dbus_message_is_method_call(m, BLUEZ_MEDIA_ENDPOINT_INTERFACE, "SetConfiguration"))
1455         r = endpoint_set_configuration(c, m, userdata);
1456     else if (dbus_message_is_method_call(m, BLUEZ_MEDIA_ENDPOINT_INTERFACE, "SelectConfiguration"))
1457         r = endpoint_select_configuration(c, m, userdata);
1458     else if (dbus_message_is_method_call(m, BLUEZ_MEDIA_ENDPOINT_INTERFACE, "ClearConfiguration"))
1459         r = endpoint_clear_configuration(c, m, userdata);
1460     else if (dbus_message_is_method_call(m, BLUEZ_MEDIA_ENDPOINT_INTERFACE, "Release"))
1461         r = endpoint_release(c, m, userdata);
1462     else
1463         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1464
1465     if (r) {
1466         pa_assert_se(dbus_connection_send(pa_dbus_connection_get(y->connection), r, NULL));
1467         dbus_message_unref(r);
1468     }
1469
1470     return DBUS_HANDLER_RESULT_HANDLED;
1471 }
1472
1473 static void endpoint_init(pa_bluetooth_discovery *y, pa_bluetooth_profile_t profile) {
1474     static const DBusObjectPathVTable vtable_endpoint = {
1475         .message_function = endpoint_handler,
1476     };
1477
1478     pa_assert(y);
1479
1480     switch(profile) {
1481         case PA_BLUETOOTH_PROFILE_A2DP_SINK:
1482             pa_assert_se(dbus_connection_register_object_path(pa_dbus_connection_get(y->connection), A2DP_SOURCE_ENDPOINT,
1483                                                               &vtable_endpoint, y));
1484             break;
1485         case PA_BLUETOOTH_PROFILE_A2DP_SOURCE:
1486             pa_assert_se(dbus_connection_register_object_path(pa_dbus_connection_get(y->connection), A2DP_SINK_ENDPOINT,
1487                                                               &vtable_endpoint, y));
1488             break;
1489         default:
1490             pa_assert_not_reached();
1491             break;
1492     }
1493 }
1494
1495 static void endpoint_done(pa_bluetooth_discovery *y, pa_bluetooth_profile_t profile) {
1496     pa_assert(y);
1497
1498     switch(profile) {
1499         case PA_BLUETOOTH_PROFILE_A2DP_SINK:
1500             dbus_connection_unregister_object_path(pa_dbus_connection_get(y->connection), A2DP_SOURCE_ENDPOINT);
1501             break;
1502         case PA_BLUETOOTH_PROFILE_A2DP_SOURCE:
1503             dbus_connection_unregister_object_path(pa_dbus_connection_get(y->connection), A2DP_SINK_ENDPOINT);
1504             break;
1505         default:
1506             pa_assert_not_reached();
1507             break;
1508     }
1509 }
1510
1511 pa_bluetooth_discovery* pa_bluetooth_discovery_get(pa_core *c) {
1512     pa_bluetooth_discovery *y;
1513     DBusError err;
1514     DBusConnection *conn;
1515     unsigned i;
1516
1517     if ((y = pa_shared_get(c, "bluetooth-discovery")))
1518         return pa_bluetooth_discovery_ref(y);
1519
1520     y = pa_xnew0(pa_bluetooth_discovery, 1);
1521     PA_REFCNT_INIT(y);
1522     y->core = c;
1523     y->adapters = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
1524     y->devices = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
1525     y->transports = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
1526     PA_LLIST_HEAD_INIT(pa_dbus_pending, y->pending);
1527
1528     for (i = 0; i < PA_BLUETOOTH_HOOK_MAX; i++)
1529         pa_hook_init(&y->hooks[i], y);
1530
1531     pa_shared_set(c, "bluetooth-discovery", y);
1532
1533     dbus_error_init(&err);
1534
1535     if (!(y->connection = pa_dbus_bus_get(y->core, DBUS_BUS_SYSTEM, &err))) {
1536         pa_log_error("Failed to get D-Bus connection: %s", err.message);
1537         goto fail;
1538     }
1539
1540     conn = pa_dbus_connection_get(y->connection);
1541
1542     /* dynamic detection of bluetooth audio devices */
1543     if (!dbus_connection_add_filter(conn, filter_cb, y, NULL)) {
1544         pa_log_error("Failed to add filter function");
1545         goto fail;
1546     }
1547     y->filter_added = true;
1548
1549     if (pa_dbus_add_matches(conn, &err,
1550             "type='signal',sender='org.freedesktop.DBus',interface='org.freedesktop.DBus',member='NameOwnerChanged'"
1551             ",arg0='" BLUEZ_SERVICE "'",
1552             "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.ObjectManager',member='InterfacesAdded'",
1553             "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.ObjectManager',"
1554             "member='InterfacesRemoved'",
1555             "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.Properties',member='PropertiesChanged'"
1556             ",arg0='" BLUEZ_ADAPTER_INTERFACE "'",
1557             "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.Properties',member='PropertiesChanged'"
1558             ",arg0='" BLUEZ_DEVICE_INTERFACE "'",
1559             "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.Properties',member='PropertiesChanged'"
1560             ",arg0='" BLUEZ_MEDIA_TRANSPORT_INTERFACE "'",
1561             NULL) < 0) {
1562         pa_log_error("Failed to add D-Bus matches: %s", err.message);
1563         goto fail;
1564     }
1565     y->matches_added = true;
1566
1567     endpoint_init(y, PA_BLUETOOTH_PROFILE_A2DP_SINK);
1568     endpoint_init(y, PA_BLUETOOTH_PROFILE_A2DP_SOURCE);
1569
1570     get_managed_objects(y);
1571
1572     return y;
1573
1574 fail:
1575     pa_bluetooth_discovery_unref(y);
1576     dbus_error_free(&err);
1577
1578     return NULL;
1579 }
1580
1581 pa_bluetooth_discovery* pa_bluetooth_discovery_ref(pa_bluetooth_discovery *y) {
1582     pa_assert(y);
1583     pa_assert(PA_REFCNT_VALUE(y) > 0);
1584
1585     PA_REFCNT_INC(y);
1586
1587     return y;
1588 }
1589
1590 void pa_bluetooth_discovery_unref(pa_bluetooth_discovery *y) {
1591     pa_assert(y);
1592     pa_assert(PA_REFCNT_VALUE(y) > 0);
1593
1594     if (PA_REFCNT_DEC(y) > 0)
1595         return;
1596
1597     pa_dbus_free_pending_list(&y->pending);
1598
1599     if (y->devices) {
1600         device_remove_all(y);
1601         pa_hashmap_free(y->devices);
1602     }
1603
1604     if (y->adapters) {
1605         adapter_remove_all(y);
1606         pa_hashmap_free(y->adapters);
1607     }
1608
1609     if (y->transports) {
1610         pa_assert(pa_hashmap_isempty(y->transports));
1611         pa_hashmap_free(y->transports);
1612     }
1613
1614     if (y->connection) {
1615
1616         if (y->matches_added)
1617             pa_dbus_remove_matches(pa_dbus_connection_get(y->connection),
1618                 "type='signal',sender='org.freedesktop.DBus',interface='org.freedesktop.DBus',member='NameOwnerChanged',"
1619                 "arg0='" BLUEZ_SERVICE "'",
1620                 "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.ObjectManager',"
1621                 "member='InterfacesAdded'",
1622                 "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.ObjectManager',"
1623                 "member='InterfacesRemoved'",
1624                 "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.Properties',"
1625                 "member='PropertiesChanged',arg0='" BLUEZ_ADAPTER_INTERFACE "'",
1626                 "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.Properties',"
1627                 "member='PropertiesChanged',arg0='" BLUEZ_DEVICE_INTERFACE "'",
1628                 "type='signal',sender='" BLUEZ_SERVICE "',interface='org.freedesktop.DBus.Properties',"
1629                 "member='PropertiesChanged',arg0='" BLUEZ_MEDIA_TRANSPORT_INTERFACE "'",
1630                 NULL);
1631
1632         if (y->filter_added)
1633             dbus_connection_remove_filter(pa_dbus_connection_get(y->connection), filter_cb, y);
1634
1635         endpoint_done(y, PA_BLUETOOTH_PROFILE_A2DP_SINK);
1636         endpoint_done(y, PA_BLUETOOTH_PROFILE_A2DP_SOURCE);
1637
1638         pa_dbus_connection_unref(y->connection);
1639     }
1640
1641     pa_shared_remove(y->core, "bluetooth-discovery");
1642     pa_xfree(y);
1643 }