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