src/modules/bluetooth/module-bluetooth-discover.c

   1 /***
   2     This file is part of PulseAudio.
   3
   4     Copyright 2008 Joao 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 published
   8     by the Free Software Foundation; either version 2 of the License,
   9     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 License
  17     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 <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29
  30 #include <pulse/xmalloc.h>
  31 #include <pulsecore/module.h>
  32 #include <pulsecore/modargs.h>
  33 #include <pulsecore/macro.h>
  34 #include <pulsecore/llist.h>
  35 #include <pulsecore/core-util.h>
  36
  37 #include "dbus-util.h"
  38 #include "module-bluetooth-discover-symdef.h"
  39
  40 PA_MODULE_AUTHOR("Joao Paulo Rechi Vita");
  41 PA_MODULE_DESCRIPTION("Detect available bluetooth audio devices and load bluetooth audio drivers");
  42 PA_MODULE_VERSION(PACKAGE_VERSION);
  43 PA_MODULE_USAGE("");
  44
  45 #define HSP_HS_UUID             "00001108-0000-1000-8000-00805F9B34FB"
  46 #define HFP_HS_UUID             "0000111E-0000-1000-8000-00805F9B34FB"
  47 #define A2DP_SOURCE_UUID        "0000110A-0000-1000-8000-00805F9B34FB"
  48 #define A2DP_SINK_UUID          "0000110B-0000-1000-8000-00805F9B34FB"
  49
  50 struct uuid {
  51     char *uuid;
  52     PA_LLIST_FIELDS(struct uuid);
  53 };
  54
  55 struct device {
  56     char *name;
  57     char *object_path;
  58     int paired;
  59     struct adapter *adapter;
  60     char *alias;
  61     int connected;
  62     PA_LLIST_HEAD(struct uuid, uuid_list);
  63     char *address;
  64     int class;
  65     int trusted;
  66     const char *audio_profile;
  67     uint32_t module_index;
  68     PA_LLIST_FIELDS(struct device);
  69 };
  70
  71 struct adapter {
  72     char *object_path;
  73     char *name;
  74     char *mode;
  75     char *address;
  76     PA_LLIST_HEAD(struct device, device_list);
  77     PA_LLIST_FIELDS(struct adapter);
  78 };
  79
  80 struct userdata {
  81     pa_module *module;
  82     pa_dbus_connection *conn;
  83     PA_LLIST_HEAD(struct adapter, adapter_list);
  84 };
  85
  86 static struct uuid *uuid_new(const char *uuid) {
  87     struct uuid *node;
  88
  89     node = pa_xnew(struct uuid, 1);
  90     node->uuid = pa_xstrdup(uuid);
  91     PA_LLIST_INIT(struct uuid, node);
  92
  93     return node;
  94 }
  95
  96 static void uuid_free(struct uuid *uuid) {
  97     pa_assert(uuid);
  98
  99     pa_xfree(uuid->uuid);
 100     pa_xfree(uuid);
 101 }
 102
 103 static struct device *device_new(struct adapter *adapter, const char *object_path) {
 104     struct device *node;
 105
 106     node = pa_xnew(struct device, 1);
 107     node->name = NULL;
 108     node->object_path = pa_xstrdup(object_path);
 109     node->paired = -1;
 110     node->adapter = adapter;
 111     node->alias = NULL;
 112     node->connected = -1;
 113     PA_LLIST_HEAD_INIT(struct uuid, node->uuid_list);
 114     node->address = NULL;
 115     node->class = -1;
 116     node->trusted = -1;
 117     node->audio_profile = NULL;
 118     node->module_index = PA_INVALID_INDEX;
 119     PA_LLIST_INIT(struct device, node);
 120
 121     return node;
 122 }
 123
 124 static void device_free(struct device *device) {
 125     struct uuid *i;
 126
 127     pa_assert(device);
 128
 129     while ((i = device->uuid_list)) {
 130         PA_LLIST_REMOVE(struct uuid, device->uuid_list, i);
 131         uuid_free(i);
 132     }
 133
 134     pa_xfree(device->name);
 135     pa_xfree(device->object_path);
 136     pa_xfree(device->alias);
 137     pa_xfree(device->address);
 138     pa_xfree(device);
 139 }
 140
 141 static struct adapter *adapter_new(const char *object_path) {
 142     struct adapter *node;
 143
 144     node = pa_xnew(struct adapter, 1);
 145     node->object_path = pa_xstrdup(object_path);
 146     node->mode = NULL;
 147     node->address = NULL;
 148     node->name = NULL;
 149
 150     PA_LLIST_HEAD_INIT(struct device, node->device_list);
 151     PA_LLIST_INIT(struct adapter, node);
 152
 153     return node;
 154 }
 155
 156 static void adapter_free(struct adapter *adapter) {
 157     struct device *i;
 158
 159     pa_assert(adapter);
 160
 161     while ((i = adapter->device_list)) {
 162         PA_LLIST_REMOVE(struct device, adapter->device_list, i);
 163         device_free(i);
 164     }
 165
 166     pa_xfree(adapter->object_path);
 167     pa_xfree(adapter->mode);
 168     pa_xfree(adapter->address);
 169     pa_xfree(adapter->name);
 170     pa_xfree(adapter);
 171 }
 172
 173 static struct adapter* adapter_find(struct userdata *u, const char *path) {
 174     struct adapter *i;
 175
 176     for (i = u->adapter_list; i; i = i->next)
 177         if (pa_streq(i->object_path, path))
 178             return i;
 179
 180     return NULL;
 181 }
 182
 183 static struct device* device_find(struct userdata *u, const char *path) {
 184     struct adapter *j;
 185     struct device *i;
 186
 187     for (j = u->adapter_list; j; j = j->next)
 188         for (i = j->device_list; i; i = i->next)
 189             if (pa_streq(i->object_path, path))
 190                 return i;
 191
 192     return NULL;
 193 }
 194
 195 static const char *yes_no_na(int b) {
 196     if (b < 0)
 197         return "n/a";
 198
 199     return pa_yes_no(b);
 200 }
 201
 202 static void print_devices(struct adapter *a) {
 203     struct device *i;
 204
 205     pa_assert(a);
 206
 207     for (i = a->device_list; i; i = i->next) {
 208         struct uuid *j;
 209
 210         if (pa_streq(i->object_path, "/DEVICE_HEAD"))
 211             continue;
 212
 213         pa_log_debug("\t[ %s ]\n"
 214                      "\t\tName = %s\n"
 215                      "\t\tPaired = %s\n"
 216                      "\t\tAdapter = %s\n"
 217                      "\t\tAlias = %s\n"
 218                      "\t\tConnected = %s\n"
 219                      "\t\tAudio = %s\n",
 220                      i->object_path,
 221                      pa_strnull(i->name),
 222                      yes_no_na(i->paired),
 223                      i->adapter->object_path,
 224                      pa_strnull(i->alias),
 225                      yes_no_na(i->connected),
 226                      pa_strnull(i->audio_profile));
 227
 228         pa_log_debug("\t\tUUIDs = ");
 229         for (j = i->uuid_list; j; j = j->next) {
 230
 231             if (pa_streq(j->uuid, "UUID_HEAD"))
 232                 continue;
 233
 234             pa_log_debug("\t\t         %s", j->uuid);
 235         }
 236
 237         pa_log_debug("\t\tAddress = %s\n"
 238                      "\t\tClass = 0x%x\n"
 239                      "\t\tTrusted = %s",
 240                      i->address,
 241                      i->class,
 242                      yes_no_na(i->trusted));
 243     }
 244 }
 245
 246 static void print_adapters(struct userdata *u) {
 247     struct adapter *i;
 248
 249     pa_assert(u);
 250
 251     for (i = u->adapter_list; i; i = i->next) {
 252
 253         if (pa_streq(i->object_path, "/ADAPTER_HEAD"))
 254             continue;
 255
 256         pa_log_debug(
 257                 "[ %s ]\n"
 258                 "\tName = %s\n"
 259                 "\tMode = %s\n"
 260                 "\tAddress = %s\n",
 261                 i->object_path,
 262                 pa_strnull(i->name),
 263                 pa_strnull(i->mode),
 264                 pa_strnull(i->address));
 265
 266         print_devices(i);
 267     }
 268 }
 269
 270 static const char *strip_object_path(const char *op) {
 271     const char *slash;
 272
 273     if ((slash = strrchr(op, '/')))
 274         return slash+1;
 275
 276     return op;
 277 }
 278
 279 static void load_module_for_device(struct userdata *u, struct device *d) {
 280     char *args;
 281     pa_module *m;
 282
 283     pa_assert(u);
 284     pa_assert(d);
 285
 286     /* Check whether we already loaded a module for this device */
 287     if (d->module_index != PA_INVALID_INDEX &&
 288         pa_idxset_get_by_index(u->module->core->modules, d->module_index))
 289         return;
 290
 291     /* Check whether this is an audio device */
 292     if (!d->audio_profile) {
 293         pa_log_debug("Ignoring %s since it is not an audio device.", d->object_path);
 294         return;
 295     }
 296
 297     args = pa_sprintf_malloc("sink_name=%s address=%s profile=%s", strip_object_path(d->object_path), d->address, d->audio_profile);
 298     m = pa_module_load(u->module->core, "module-bluetooth-device", args);
 299     pa_xfree(args);
 300
 301     if (!m) {
 302         pa_log_debug("Failed to load module for device %s", d->object_path);
 303         return;
 304     }
 305
 306     d->module_index = m->index;
 307 }
 308
 309 static void load_modules(struct userdata *u) {
 310     struct device *d;
 311     struct adapter *a;
 312
 313     pa_assert(u);
 314
 315     for (a = u->adapter_list; a; a = a->next)
 316         for (d = a->device_list; d; d = d->next)
 317             load_module_for_device(u, d);
 318 }
 319
 320 static int parse_adapter_property(struct userdata *u, struct adapter *a, DBusMessageIter *i) {
 321     const char *key;
 322     DBusMessageIter variant_i;
 323
 324     pa_assert(u);
 325     pa_assert(a);
 326     pa_assert(i);
 327
 328     if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_STRING) {
 329         pa_log("Property name not a string.");
 330         return -1;
 331     }
 332
 333     dbus_message_iter_get_basic(i, &key);
 334
 335     if (!dbus_message_iter_next(i)) {
 336         pa_log("Property value missing");
 337         return -1;
 338     }
 339
 340     if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_VARIANT) {
 341         pa_log("Property value not a variant.");
 342         return -1;
 343     }
 344
 345     dbus_message_iter_recurse(i, &variant_i);
 346
 347     if (dbus_message_iter_get_arg_type(&variant_i) == DBUS_TYPE_STRING) {
 348         const char *value;
 349         dbus_message_iter_get_basic(&variant_i, &value);
 350
 351         if (pa_streq(key, "Mode")) {
 352             pa_xfree(a->mode);
 353             a->mode = pa_xstrdup(value);
 354         } else if (pa_streq(key, "Address")) {
 355             pa_xstrdup(a->address);
 356             a->address = pa_xstrdup(value);
 357         } else if (pa_streq(key, "Name")) {
 358             pa_xfree(a->name);
 359             a->name = pa_xstrdup(value);
 360         }
 361     }
 362
 363     return 0;
 364 }
 365
 366 static int get_adapter_properties(struct userdata *u, struct adapter *a) {
 367     DBusError e;
 368     DBusMessage *m = NULL, *r = NULL;
 369     DBusMessageIter arg_i, element_i;
 370     int ret = -1;
 371
 372     pa_assert(u);
 373     pa_assert(a);
 374     dbus_error_init(&e);
 375
 376     pa_assert_se(m = dbus_message_new_method_call("org.bluez", a->object_path, "org.bluez.Adapter", "GetProperties"));
 377
 378     r = dbus_connection_send_with_reply_and_block(pa_dbus_connection_get(u->conn), m, -1, &e);
 379
 380     if (!r) {
 381         pa_log("org.bluez.Adapter.GetProperties failed: %s", e.message);
 382         goto finish;
 383     }
 384
 385     if (!dbus_message_iter_init(r, &arg_i)) {
 386         pa_log("org.bluez.Adapter.GetProperties reply has no arguments");
 387         goto finish;
 388     }
 389
 390     if (dbus_message_iter_get_arg_type(&arg_i) != DBUS_TYPE_ARRAY) {
 391         pa_log("org.bluez.Adapter.GetProperties argument is not an array");
 392         goto finish;
 393     }
 394
 395     dbus_message_iter_recurse(&arg_i, &element_i);
 396     while (dbus_message_iter_get_arg_type(&element_i) != DBUS_TYPE_INVALID) {
 397
 398         if (dbus_message_iter_get_arg_type(&element_i) == DBUS_TYPE_DICT_ENTRY) {
 399             DBusMessageIter dict_i;
 400
 401             dbus_message_iter_recurse(&element_i, &dict_i);
 402
 403             if (parse_adapter_property(u, a, &dict_i) < 0)
 404                 goto finish;
 405         }
 406
 407         if (!dbus_message_iter_next(&element_i))
 408             break;
 409     }
 410
 411     ret = 0;
 412
 413 finish:
 414     if (m)
 415         dbus_message_unref(m);
 416     if (r)
 417         dbus_message_unref(r);
 418
 419     dbus_error_free(&e);
 420
 421     return ret;
 422 }
 423
 424 static int detect_adapters(struct userdata *u) {
 425     DBusError e;
 426     DBusMessage *m = NULL, *r = NULL;
 427     DBusMessageIter arg_i, element_i;
 428     struct adapter *adapter_list_i;
 429     int ret = -1;
 430
 431     pa_assert(u);
 432     dbus_error_init(&e);
 433
 434     /* get adapters */
 435     pa_assert_se(m = dbus_message_new_method_call("org.bluez", "/", "org.bluez.Manager", "ListAdapters"));
 436     r = dbus_connection_send_with_reply_and_block(pa_dbus_connection_get(u->conn), m, -1, &e);
 437
 438     if (!r) {
 439         pa_log("org.bluez.Manager.ListAdapters failed: %s", e.message);
 440         goto finish;
 441     }
 442
 443     if (!dbus_message_iter_init(r, &arg_i)) {
 444         pa_log("org.bluez.Manager.ListAdapters reply has no arguments");
 445         goto finish;
 446     }
 447
 448     if (dbus_message_iter_get_arg_type(&arg_i) != DBUS_TYPE_ARRAY) {
 449         pa_log("org.bluez.Manager.ListAdapters argument is not an array");
 450         goto finish;
 451     }
 452
 453     dbus_message_iter_recurse(&arg_i, &element_i);
 454     while (dbus_message_iter_get_arg_type(&element_i) != DBUS_TYPE_INVALID) {
 455         if (dbus_message_iter_get_arg_type(&element_i) == DBUS_TYPE_OBJECT_PATH) {
 456
 457             struct adapter *node;
 458             const char *value;
 459
 460             dbus_message_iter_get_basic(&element_i, &value);
 461             node = adapter_new(value);
 462             PA_LLIST_PREPEND(struct adapter, u->adapter_list, node);
 463         }
 464
 465         if (!dbus_message_iter_next(&element_i))
 466             break;
 467     }
 468
 469     ret = 0;
 470
 471     /* get adapter properties */
 472     for (adapter_list_i = u->adapter_list; adapter_list_i; adapter_list_i = adapter_list_i->next)
 473         get_adapter_properties(u, adapter_list_i);
 474
 475 finish:
 476     if (m)
 477         dbus_message_unref(m);
 478     if (r)
 479         dbus_message_unref(r);
 480
 481     dbus_error_free(&e);
 482     return ret;
 483 }
 484
 485 static int parse_device_property(struct userdata *u, struct device *d, DBusMessageIter *i) {
 486     const char *key;
 487     DBusMessageIter variant_i;
 488
 489     pa_assert(u);
 490     pa_assert(d);
 491     pa_assert(i);
 492
 493     if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_STRING) {
 494         pa_log("Property name not a string.");
 495         return -1;
 496     }
 497
 498     dbus_message_iter_get_basic(i, &key);
 499
 500     if (!dbus_message_iter_next(i))  {
 501         pa_log("Property value missing");
 502         return -1;
 503     }
 504
 505     if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_VARIANT) {
 506         pa_log("Property value not a variant.");
 507         return -1;
 508     }
 509
 510     dbus_message_iter_recurse(i, &variant_i);
 511
 512     pa_log_debug("Parsing device property %s", key);
 513
 514     switch (dbus_message_iter_get_arg_type(&variant_i)) {
 515
 516         case DBUS_TYPE_STRING: {
 517
 518             const char *value;
 519             dbus_message_iter_get_basic(&variant_i, &value);
 520
 521             if (pa_streq(key, "Name")) {
 522                 pa_xfree(d->name);
 523                 d->name = pa_xstrdup(value);
 524             } else if (pa_streq(key, "Alias")) {
 525                 pa_xfree(d->alias);
 526                 d->alias = pa_xstrdup(value);
 527             } else if (pa_streq(key, "Address")) {
 528                 pa_xfree(d->address);
 529                 d->address = pa_xstrdup(value);
 530             }
 531
 532             break;
 533         }
 534
 535         case DBUS_TYPE_BOOLEAN: {
 536
 537             dbus_bool_t value;
 538             dbus_message_iter_get_basic(&variant_i, &value);
 539
 540             if (pa_streq(key, "Paired"))
 541                 d->paired = !!value;
 542             else if (pa_streq(key, "Connected"))
 543                 d->connected = !!value;
 544             else if (pa_streq(key, "Trusted"))
 545                 d->trusted = !!value;
 546
 547             break;
 548         }
 549
 550         case DBUS_TYPE_UINT32: {
 551
 552             uint32_t value;
 553             dbus_message_iter_get_basic(&variant_i, &value);
 554
 555             if (pa_streq(key, "Class"))
 556                 d->class = (int) value;
 557
 558             break;
 559         }
 560
 561         case DBUS_TYPE_ARRAY: {
 562
 563             DBusMessageIter ai;
 564             dbus_message_iter_recurse(&variant_i, &ai);
 565
 566             if (dbus_message_iter_get_arg_type(&ai) == DBUS_TYPE_STRING &&
 567                 pa_streq(key, "UUIDs")) {
 568
 569                 d->audio_profile = NULL;
 570
 571                 while (dbus_message_iter_get_arg_type(&ai) != DBUS_TYPE_INVALID) {
 572                     struct uuid *node;
 573                     const char *value;
 574
 575                     dbus_message_iter_get_basic(&ai, &value);
 576                     node = uuid_new(value);
 577                     PA_LLIST_PREPEND(struct uuid, d->uuid_list, node);
 578
 579                     if ((strcasecmp(value, A2DP_SOURCE_UUID) == 0) ||
 580                         (strcasecmp(value, A2DP_SINK_UUID) == 0))
 581                         d->audio_profile = "a2dp";
 582                     else if (((strcasecmp(value, HSP_HS_UUID) == 0) ||
 583                               (strcasecmp(value, HFP_HS_UUID) == 0)) &&
 584                              !d->audio_profile)
 585                         d->audio_profile = "hsp";
 586
 587                     if (!dbus_message_iter_next(&ai))
 588                         break;
 589                 }
 590             }
 591
 592             break;
 593         }
 594     }
 595
 596     return 0;
 597 }
 598
 599 static int get_device_properties(struct userdata *u, struct device *d) {
 600     DBusError e;
 601     DBusMessage *m = NULL, *r = NULL;
 602     DBusMessageIter arg_i, element_i;
 603     int ret = -1;
 604
 605     pa_assert(u);
 606     pa_assert(d);
 607
 608     dbus_error_init(&e);
 609
 610     pa_assert_se(m = dbus_message_new_method_call("org.bluez", d->object_path, "org.bluez.Device", "GetProperties"));
 611
 612     r = dbus_connection_send_with_reply_and_block(pa_dbus_connection_get(u->conn), m, -1, &e);
 613
 614     if (!r) {
 615         pa_log("org.bluez.Device.GetProperties failed: %s", e.message);
 616         goto finish;
 617     }
 618
 619     if (!dbus_message_iter_init(r, &arg_i)) {
 620         pa_log("org.bluez.Device.GetProperties reply has no arguments");
 621         goto finish;
 622     }
 623
 624     if (dbus_message_iter_get_arg_type(&arg_i) != DBUS_TYPE_ARRAY) {
 625         pa_log("org.bluez.Device.GetProperties argument is not an array");
 626         goto finish;
 627     }
 628
 629     dbus_message_iter_recurse(&arg_i, &element_i);
 630     while (dbus_message_iter_get_arg_type(&element_i) != DBUS_TYPE_INVALID) {
 631
 632         if (dbus_message_iter_get_arg_type(&element_i) == DBUS_TYPE_DICT_ENTRY) {
 633             DBusMessageIter dict_i;
 634
 635             dbus_message_iter_recurse(&element_i, &dict_i);
 636
 637             if (parse_device_property(u, d, &dict_i) < 0)
 638                 goto finish;
 639         }
 640
 641         if (!dbus_message_iter_next(&element_i))
 642             break;
 643     }
 644
 645     ret = 0;
 646
 647 finish:
 648     if (m)
 649         dbus_message_unref(m);
 650     if (r)
 651         dbus_message_unref(r);
 652
 653     dbus_error_free(&e);
 654
 655     return ret;
 656 }
 657
 658 static int detect_devices(struct userdata *u) {
 659     DBusError e;
 660     DBusMessage *m = NULL, *r = NULL;
 661     DBusMessageIter arg_i, element_i;
 662     struct adapter *adapter_list_i;
 663     struct device *device_list_i;
 664     const char *value;
 665     int ret = -1;
 666
 667     pa_assert(u);
 668     dbus_error_init(&e);
 669
 670     /* get devices of each adapter */
 671     for (adapter_list_i = u->adapter_list; adapter_list_i; adapter_list_i = adapter_list_i->next) {
 672
 673         pa_assert_se(m = dbus_message_new_method_call("org.bluez", adapter_list_i->object_path, "org.bluez.Adapter", "ListDevices"));
 674
 675         r = dbus_connection_send_with_reply_and_block(pa_dbus_connection_get(u->conn), m, -1, &e);
 676
 677         if (!r) {
 678             pa_log("org.bluez.Adapter.ListDevices failed: %s", e.message);
 679             goto finish;
 680         }
 681
 682         if (!dbus_message_iter_init(r, &arg_i)) {
 683             pa_log("org.bluez.Adapter.ListDevices reply has no arguments");
 684             goto finish;
 685         }
 686
 687         if (dbus_message_iter_get_arg_type(&arg_i) != DBUS_TYPE_ARRAY) {
 688             pa_log("org.bluez.Adapter.ListDevices argument is not an array");
 689             goto finish;
 690         }
 691
 692         dbus_message_iter_recurse(&arg_i, &element_i);
 693         while (dbus_message_iter_get_arg_type(&element_i) != DBUS_TYPE_INVALID) {
 694             if (dbus_message_iter_get_arg_type(&element_i) == DBUS_TYPE_OBJECT_PATH) {
 695                 struct device *node;
 696                 dbus_message_iter_get_basic(&element_i, &value);
 697                 node = device_new(adapter_list_i, value);
 698                 PA_LLIST_PREPEND(struct device, adapter_list_i->device_list, node);
 699             }
 700
 701             if (!dbus_message_iter_next(&element_i))
 702                 break;
 703         }
 704     }
 705
 706     /* get device properties */
 707     for (adapter_list_i = u->adapter_list; adapter_list_i; adapter_list_i = adapter_list_i->next)
 708         for (device_list_i = adapter_list_i->device_list; device_list_i; device_list_i = device_list_i->next)
 709             get_device_properties(u, device_list_i);
 710
 711     ret = 0;
 712
 713 finish:
 714     if (m)
 715         dbus_message_unref(m);
 716     if (r)
 717         dbus_message_unref(r);
 718
 719     dbus_error_free(&e);
 720
 721     return ret;
 722 }
 723
 724 static DBusHandlerResult filter_cb(DBusConnection *bus, DBusMessage *msg, void *userdata) {
 725     DBusMessageIter arg_i;
 726     DBusError err;
 727     const char *value;
 728     struct userdata *u;
 729
 730     pa_assert(bus);
 731     pa_assert(msg);
 732     pa_assert(userdata);
 733     u = userdata;
 734
 735     dbus_error_init(&err);
 736
 737     pa_log_debug("dbus: interface=%s, path=%s, member=%s\n",
 738             dbus_message_get_interface(msg),
 739             dbus_message_get_path(msg),
 740             dbus_message_get_member(msg));
 741
 742     if (dbus_message_is_signal(msg, "org.bluez.Manager", "AdapterAdded")) {
 743
 744         if (!dbus_message_iter_init(msg, &arg_i))
 745             pa_log("dbus: message has no parameters");
 746         else if (dbus_message_iter_get_arg_type(&arg_i) != DBUS_TYPE_OBJECT_PATH)
 747             pa_log("dbus: argument is not object path");
 748         else {
 749             struct adapter *node;
 750
 751             dbus_message_iter_get_basic(&arg_i, &value);
 752             pa_log_debug("hcid: adapter %s added", value);
 753
 754             node = adapter_new(value);
 755             PA_LLIST_PREPEND(struct adapter, u->adapter_list, node);
 756
 757             get_adapter_properties(u, node);
 758         }
 759
 760     } else if (dbus_message_is_signal(msg, "org.bluez.Manager", "AdapterRemoved")) {
 761         if (!dbus_message_iter_init(msg, &arg_i))
 762             pa_log("dbus: message has no parameters");
 763         else if (dbus_message_iter_get_arg_type(&arg_i) != DBUS_TYPE_OBJECT_PATH)
 764             pa_log("dbus: argument is not object path");
 765         else {
 766             struct adapter *a;
 767
 768             dbus_message_iter_get_basic(&arg_i, &value);
 769             pa_log_debug("hcid: adapter %s removed", value);
 770
 771             if ((a = adapter_find(u, value))) {
 772                 PA_LLIST_REMOVE(struct adapter, u->adapter_list, a);
 773                 adapter_free(a);
 774             }
 775         }
 776
 777     } else if (dbus_message_is_signal(msg, "org.bluez.Adapter", "PropertyChanged")) {
 778
 779         if (!dbus_message_iter_init(msg, &arg_i))
 780             pa_log("dbus: message has no parameters");
 781         else {
 782             struct adapter *a;
 783
 784             if ((a = adapter_find(u, dbus_message_get_path(msg))))
 785                 parse_adapter_property(u, a, &arg_i);
 786         }
 787
 788     } else if (dbus_message_is_signal(msg, "org.bluez.Adapter", "DeviceCreated")) {
 789
 790         if (!dbus_message_iter_init(msg, &arg_i))
 791             pa_log("dbus: message has no parameters");
 792         else if (dbus_message_iter_get_arg_type(&arg_i) != DBUS_TYPE_OBJECT_PATH)
 793             pa_log("dbus: argument is not object path");
 794         else {
 795             struct adapter *adapter;
 796
 797             if (!(adapter = adapter_find(u, dbus_message_get_path(msg))))
 798                 pa_log("dbus: failed to find adapter for object path");
 799             else {
 800                 struct device *node;
 801
 802                 dbus_message_iter_get_basic(&arg_i, &value);
 803                 pa_log_debug("hcid: device %s created", value);
 804
 805                 node = device_new(adapter, value);
 806                 PA_LLIST_PREPEND(struct device, adapter->device_list, node);
 807
 808                 get_device_properties(u, node);
 809                 load_module_for_device(u, node);
 810             }
 811         }
 812
 813     } else if (dbus_message_is_signal(msg, "org.bluez.Adapter", "DeviceRemoved")) {
 814
 815         if (!dbus_message_iter_init(msg, &arg_i))
 816             pa_log("dbus: message has no parameters");
 817         else if (dbus_message_iter_get_arg_type(&arg_i) != DBUS_TYPE_OBJECT_PATH)
 818             pa_log("dbus: argument is not object path");
 819         else {
 820             struct device *d;
 821
 822             dbus_message_iter_get_basic(&arg_i, &value);
 823             pa_log_debug("hcid: device %s removed", value);
 824
 825             if ((d = device_find(u, value))) {
 826                 PA_LLIST_REMOVE(struct device, d->adapter->device_list, d);
 827                 device_free(d);
 828             }
 829         }
 830
 831     } else if (dbus_message_is_signal(msg, "org.bluez.Device", "PropertyChanged")) {
 832
 833         if (!dbus_message_iter_init(msg, &arg_i))
 834             pa_log("dbus: message has no parameters");
 835         else {
 836             struct device *d;
 837
 838             if ((d = device_find(u, dbus_message_get_path(msg)))) {
 839                 parse_device_property(u, d, &arg_i);
 840
 841                 /* Hmm, something changed, let's try to reconnect if we
 842                  * aren't connected yet */
 843                 load_module_for_device(u, d);
 844             }
 845         }
 846
 847     } else if (dbus_message_is_signal(msg, "org.bluez.Headset", "Connected") ||
 848                dbus_message_is_signal(msg, "org.bluez.AudioSink", "Connected")) {
 849
 850         if (!dbus_message_iter_init(msg, &arg_i))
 851             pa_log("dbus: message has no parameters");
 852         else {
 853             struct device *d;
 854
 855             if ((d = device_find(u, dbus_message_get_path(msg))))
 856                 load_module_for_device(u, d);
 857         }
 858     }
 859
 860     dbus_error_free(&err);
 861     return DBUS_HANDLER_RESULT_HANDLED;
 862 }
 863
 864 void pa__done(pa_module* m) {
 865     struct userdata *u;
 866     struct adapter *i;
 867
 868     pa_assert(m);
 869
 870     if (!(u = m->userdata))
 871         return;
 872
 873     while ((i = u->adapter_list)) {
 874         PA_LLIST_REMOVE(struct adapter, u->adapter_list, i);
 875         adapter_free(i);
 876     }
 877
 878     if (u->conn)
 879         pa_dbus_connection_unref(u->conn);
 880
 881     pa_xfree(u);
 882 }
 883
 884 int pa__init(pa_module* m) {
 885     DBusError err;
 886     struct userdata *u;
 887
 888     pa_assert(m);
 889     dbus_error_init(&err);
 890
 891     m->userdata = u = pa_xnew(struct userdata, 1);
 892     u->module = m;
 893     PA_LLIST_HEAD_INIT(struct adapter, u->adapter_list);
 894
 895     /* connect to the bus */
 896     u->conn = pa_dbus_bus_get(m->core, DBUS_BUS_SYSTEM, &err);
 897     if (dbus_error_is_set(&err) || (u->conn == NULL) ) {
 898         pa_log("Failed to get D-Bus connection: %s", err.message);
 899         goto fail;
 900     }
 901
 902     /* static detection of bluetooth audio devices */
 903     detect_adapters(u);
 904     detect_devices(u);
 905
 906     print_adapters(u);
 907     load_modules(u);
 908
 909     /* dynamic detection of bluetooth audio devices */
 910     if (!dbus_connection_add_filter(pa_dbus_connection_get(u->conn), filter_cb, u, NULL)) {
 911         pa_log_error("Failed to add filter function");
 912         goto fail;
 913     }
 914
 915     dbus_bus_add_match(pa_dbus_connection_get(u->conn), "type='signal',sender='org.bluez',interface='org.bluez.Manager'", &err);
 916     if (dbus_error_is_set(&err)) {
 917         pa_log_error("Unable to subscribe to org.bluez.Manager signals: %s: %s", err.name, err.message);
 918         goto fail;
 919     }
 920
 921     dbus_bus_add_match(pa_dbus_connection_get(u->conn), "type='signal',sender='org.bluez',interface='org.bluez.Adapter'", &err);
 922     if (dbus_error_is_set(&err)) {
 923         pa_log_error("Unable to subscribe to org.bluez.Adapter signals: %s: %s", err.name, err.message);
 924         goto fail;
 925     }
 926
 927     dbus_bus_add_match(pa_dbus_connection_get(u->conn), "type='signal',sender='org.bluez',interface='org.bluez.Device'", &err);
 928     if (dbus_error_is_set(&err)) {
 929         pa_log_error("Unable to subscribe to org.bluez.Device signals: %s: %s", err.name, err.message);
 930         goto fail;
 931     }
 932
 933     dbus_bus_add_match(pa_dbus_connection_get(u->conn), "type='signal',sender='org.bluez',interface='org.bluez.Headset,member='Connected''", &err);
 934     if (dbus_error_is_set(&err)) {
 935         pa_log_error("Unable to subscribe to org.bluez.Headset signals: %s: %s", err.name, err.message);
 936         goto fail;
 937     }
 938
 939     dbus_bus_add_match(pa_dbus_connection_get(u->conn), "type='signal',sender='org.bluez',interface='org.bluez.AudioSink,member='Connected''", &err);
 940     if (dbus_error_is_set(&err)) {
 941         pa_log_error("Unable to subscribe to org.bluez.AudioSink signals: %s: %s", err.name, err.message);
 942         goto fail;
 943     }
 944
 945     return 0;
 946
 947 fail:
 948     dbus_error_free(&err);
 949     pa__done(m);
 950
 951     return -1;
 952 }