git.maemo.org Git - connman/blob - plugins/bluetooth.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2008  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <errno.h>
  27
  28 #include <gdbus.h>
  29
  30 #include <connman/plugin.h>
  31 #include <connman/driver.h>
  32 #include <connman/log.h>
  33
  34 #define BLUEZ_SERVICE                   "org.bluez"
  35 #define BLUEZ_MANAGER_INTERFACE         BLUEZ_SERVICE ".Manager"
  36 #define BLUEZ_ADAPTER_INTERFACE         BLUEZ_SERVICE ".Adapter"
  37
  38 #define ADAPTER_ADDED                   "AdapterAdded"
  39 #define ADAPTER_REMOVED                 "AdapterRemoved"
  40 #define PROPERTY_CHANGED                "PropertyChanged"
  41
  42 #define TIMEOUT 5000
  43
  44 static int bluetooth_probe(struct connman_element *device)
  45 {
  46         DBG("device %p name %s", device, device->name);
  47
  48         return 0;
  49 }
  50
  51 static void bluetooth_remove(struct connman_element *device)
  52 {
  53         DBG("device %p name %s", device, device->name);
  54 }
  55
  56 static int bluetooth_enable(struct connman_element *device)
  57 {
  58         DBG("device %p name %s", device, device->name);
  59
  60         return -EINVAL;
  61 }
  62
  63 static int bluetooth_disable(struct connman_element *device)
  64 {
  65         DBG("device %p name %s", device, device->name);
  66
  67         return 0;
  68 }
  69
  70 static struct connman_driver bluetooth_driver = {
  71         .name           = "bluetooth",
  72         .type           = CONNMAN_ELEMENT_TYPE_DEVICE,
  73         .subtype        = CONNMAN_ELEMENT_SUBTYPE_BLUETOOTH,
  74         .probe          = bluetooth_probe,
  75         .remove         = bluetooth_remove,
  76         .enable         = bluetooth_enable,
  77         .disable        = bluetooth_disable,
  78 };
  79
  80 static GSList *device_list = NULL;
  81
  82 static struct connman_element *find_adapter(const char *path)
  83 {
  84         const char *devname = g_basename(path);
  85         GSList *list;
  86
  87         DBG("path %s", path);
  88
  89         for (list = device_list; list; list = list->next) {
  90                 struct connman_element *device = list->data;
  91
  92                 if (g_str_equal(device->devname, devname) == TRUE)
  93                         return device;
  94         }
  95
  96         return NULL;
  97 }
  98
  99 static void property_changed(DBusConnection *connection, DBusMessage *message)
 100 {
 101         const char *path = dbus_message_get_path(message);
 102         struct connman_element *device;
 103         DBusMessageIter iter, value;
 104         const char *key;
 105
 106         DBG("path %s", path);
 107
 108         device = find_adapter(path);
 109         if (device == NULL)
 110                 return;
 111
 112         if (dbus_message_iter_init(message, &iter) == FALSE)
 113                 return;
 114
 115         dbus_message_iter_get_basic(&iter, &key);
 116
 117         if (g_str_equal(key, "Powered") == TRUE) {
 118                 gboolean val;
 119
 120                 dbus_message_iter_next(&iter);
 121                 dbus_message_iter_recurse(&iter, &value);
 122
 123                 dbus_message_iter_get_basic(&value, &val);
 124                 connman_element_set_enabled(device, val);
 125         }
 126 }
 127
 128 static void properties_reply(DBusPendingCall *call, void *user_data)
 129 {
 130         DBusMessage *message = user_data;
 131         const char *path = dbus_message_get_path(message);
 132         struct connman_element *device;
 133         DBusMessageIter array, dict;
 134         DBusMessage *reply;
 135
 136         DBG("path %s", path);
 137
 138         device = find_adapter(path);
 139
 140         dbus_message_unref(message);
 141
 142         reply = dbus_pending_call_steal_reply(call);
 143
 144         if (device == NULL)
 145                 goto done;
 146
 147         if (dbus_message_iter_init(reply, &array) == FALSE)
 148                 goto done;
 149
 150         if (dbus_message_iter_get_arg_type(&array) != DBUS_TYPE_ARRAY)
 151                 goto done;
 152
 153         dbus_message_iter_recurse(&array, &dict);
 154         while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
 155                 DBusMessageIter entry, value;
 156                 const char *key;
 157
 158                 dbus_message_iter_recurse(&dict, &entry);
 159                 dbus_message_iter_get_basic(&entry, &key);
 160
 161                 if (g_str_equal(key, "Powered") == TRUE) {
 162                         gboolean val;
 163
 164                         dbus_message_iter_next(&entry);
 165                         dbus_message_iter_recurse(&entry, &value);
 166
 167                         dbus_message_iter_get_basic(&value, &val);
 168                         connman_element_set_enabled(device, val);
 169                 }
 170
 171                 dbus_message_iter_next(&dict);
 172         }
 173
 174 done:
 175         dbus_message_unref(reply);
 176 }
 177
 178 static void add_adapter(DBusConnection *connection, const char *path)
 179 {
 180         struct connman_element *device;
 181         DBusMessage *message;
 182         DBusPendingCall *call;
 183
 184         DBG("path %s", path);
 185
 186         device = find_adapter(path);
 187         if (device != NULL)
 188                 return;
 189
 190         device = connman_element_create(NULL);
 191         device->type = CONNMAN_ELEMENT_TYPE_DEVICE;
 192         device->subtype = CONNMAN_ELEMENT_SUBTYPE_BLUETOOTH;
 193
 194         device->name = g_path_get_basename(path);
 195
 196         connman_element_register(device, NULL);
 197         device_list = g_slist_append(device_list, device);
 198
 199         message = dbus_message_new_method_call(BLUEZ_SERVICE, path,
 200                                 BLUEZ_ADAPTER_INTERFACE, "GetProperties");
 201         if (message == NULL)
 202                 return;
 203
 204         if (dbus_connection_send_with_reply(connection, message,
 205                                                 &call, TIMEOUT) == FALSE) {
 206                 connman_error("Failed to get adapter properties");
 207                 dbus_message_unref(message);
 208                 return;
 209         }
 210
 211         dbus_pending_call_set_notify(call, properties_reply, message, NULL);
 212 }
 213
 214 static void remove_adapter(DBusConnection *connection, const char *path)
 215 {
 216         struct connman_element *device;
 217
 218         DBG("path %s", path);
 219
 220         device = find_adapter(path);
 221         if (device == NULL)
 222                 return;
 223
 224         device_list = g_slist_remove(device_list, device);
 225
 226         connman_element_unregister(device);
 227         connman_element_unref(device);
 228 }
 229
 230 static void adapters_reply(DBusPendingCall *call, void *user_data)
 231 {
 232         DBusConnection *connection = user_data;
 233         DBusMessage *reply;
 234         DBusError error;
 235         char **adapters;
 236         int i, num_adapters;
 237
 238         DBG("");
 239
 240         reply = dbus_pending_call_steal_reply(call);
 241
 242         dbus_error_init(&error);
 243
 244         if (dbus_message_get_args(reply, &error,
 245                                 DBUS_TYPE_ARRAY, DBUS_TYPE_OBJECT_PATH,
 246                                                 &adapters, &num_adapters,
 247                                                 DBUS_TYPE_INVALID) == FALSE) {
 248                 if (dbus_error_is_set(&error) == TRUE) {
 249                         connman_error("%s", error.message);
 250                         dbus_error_free(&error);
 251                 } else
 252                         connman_error("Wrong arguments for adapter list");
 253                 goto done;
 254         }
 255
 256         for (i = 0; i < num_adapters; i++)
 257                 add_adapter(connection, adapters[i]);
 258
 259         g_strfreev(adapters);
 260
 261 done:
 262         dbus_message_unref(reply);
 263 }
 264
 265 static void bluetooth_connect(DBusConnection *connection, void *user_data)
 266 {
 267         DBusMessage *message;
 268         DBusPendingCall *call;
 269
 270         DBG("connection %p", connection);
 271
 272         message = dbus_message_new_method_call(BLUEZ_SERVICE, "/",
 273                                 BLUEZ_MANAGER_INTERFACE, "ListAdapters");
 274         if (message == NULL)
 275                 return;
 276
 277         if (dbus_connection_send_with_reply(connection, message,
 278                                                 &call, TIMEOUT) == FALSE) {
 279                 connman_error("Failed to get Bluetooth adapters");
 280                 dbus_message_unref(message);
 281                 return;
 282         }
 283
 284         dbus_pending_call_set_notify(call, adapters_reply, connection, NULL);
 285
 286         dbus_message_unref(message);
 287 }
 288
 289 static void bluetooth_disconnect(DBusConnection *connection, void *user_data)
 290 {
 291         GSList *list;
 292
 293         DBG("connection %p", connection);
 294
 295         for (list = device_list; list; list = list->next) {
 296                 struct connman_element *device = list->data;
 297
 298                 connman_element_unregister(device);
 299                 connman_element_unref(device);
 300         }
 301
 302         g_slist_free(device_list);
 303         device_list = NULL;
 304 }
 305
 306 static DBusHandlerResult bluetooth_signal(DBusConnection *connection,
 307                                         DBusMessage *message, void *user_data)
 308 {
 309         DBG("connection %p", connection);
 310
 311         if (dbus_message_is_signal(message, BLUEZ_ADAPTER_INTERFACE,
 312                                                 PROPERTY_CHANGED) == TRUE) {
 313                 property_changed(connection, message);
 314         } else if (dbus_message_is_signal(message, BLUEZ_MANAGER_INTERFACE,
 315                                                 ADAPTER_ADDED) == TRUE) {
 316                 const char *path;
 317                 dbus_message_get_args(message, NULL,
 318                                         DBUS_TYPE_OBJECT_PATH, &path,
 319                                                         DBUS_TYPE_INVALID);
 320                 add_adapter(connection, path);
 321         } else if (dbus_message_is_signal(message, BLUEZ_MANAGER_INTERFACE,
 322                                                 ADAPTER_REMOVED) == TRUE) {
 323                 const char *path;
 324                 dbus_message_get_args(message, NULL,
 325                                         DBUS_TYPE_OBJECT_PATH, &path,
 326                                                         DBUS_TYPE_INVALID);
 327                 remove_adapter(connection, path);
 328         }
 329
 330         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 331 }
 332
 333 static DBusConnection *connection;
 334 static guint watch;
 335
 336 static const char *added_rule = "type=signal,member=" ADAPTER_ADDED
 337                                         ",interface=" BLUEZ_MANAGER_INTERFACE;
 338 static const char *removed_rule = "type=signal,member=" ADAPTER_REMOVED
 339                                         ",interface=" BLUEZ_MANAGER_INTERFACE;
 340
 341 static const char *adapter_rule = "type=signal,member=" PROPERTY_CHANGED
 342                                         ",interface=" BLUEZ_ADAPTER_INTERFACE;
 343
 344 static int bluetooth_init(void)
 345 {
 346         int err = -EIO;
 347
 348         connection = dbus_bus_get(DBUS_BUS_SYSTEM, NULL);
 349         if (connection == NULL)
 350                 return -EIO;
 351
 352         if (dbus_connection_add_filter(connection, bluetooth_signal,
 353                                                         NULL, NULL) == FALSE)
 354                 goto unref;
 355
 356         err = connman_driver_register(&bluetooth_driver);
 357         if (err < 0)
 358                 goto remove;
 359
 360         watch = g_dbus_add_service_watch(connection, BLUEZ_SERVICE,
 361                         bluetooth_connect, bluetooth_disconnect, NULL, NULL);
 362         if (watch == 0) {
 363                 connman_driver_unregister(&bluetooth_driver);
 364                 err = -EIO;
 365                 goto remove;
 366         }
 367
 368         if (g_dbus_check_service(connection, BLUEZ_SERVICE) == TRUE)
 369                 bluetooth_connect(connection, NULL);
 370
 371         dbus_bus_add_match(connection, added_rule, NULL);
 372         dbus_bus_add_match(connection, removed_rule, NULL);
 373         dbus_bus_add_match(connection, adapter_rule, NULL);
 374         dbus_connection_flush(connection);
 375
 376         return 0;
 377
 378 remove:
 379         dbus_connection_remove_filter(connection, bluetooth_signal, NULL);
 380
 381 unref:
 382         dbus_connection_unref(connection);
 383
 384         return err;
 385 }
 386
 387 static void bluetooth_exit(void)
 388 {
 389         dbus_bus_remove_match(connection, adapter_rule, NULL);
 390         dbus_bus_remove_match(connection, removed_rule, NULL);
 391         dbus_bus_remove_match(connection, added_rule, NULL);
 392         dbus_connection_flush(connection);
 393
 394         g_dbus_remove_watch(connection, watch);
 395
 396         bluetooth_disconnect(connection, NULL);
 397
 398         connman_driver_unregister(&bluetooth_driver);
 399
 400         dbus_connection_remove_filter(connection, bluetooth_signal, NULL);
 401
 402         dbus_connection_unref(connection);
 403 }
 404
 405 CONNMAN_PLUGIN_DEFINE(bluetooth, "Bluetooth technology plugin", VERSION,
 406                                                 bluetooth_init, bluetooth_exit)