vcs.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         device->policy = CONNMAN_ELEMENT_POLICY_IGNORE;
 194
 195         device->name = g_path_get_basename(path);
 196
 197         connman_element_register(device, NULL);
 198         device_list = g_slist_append(device_list, device);
 199
 200         message = dbus_message_new_method_call(BLUEZ_SERVICE, path,
 201                                 BLUEZ_ADAPTER_INTERFACE, "GetProperties");
 202         if (message == NULL)
 203                 return;
 204
 205         if (dbus_connection_send_with_reply(connection, message,
 206                                                 &call, TIMEOUT) == FALSE) {
 207                 connman_error("Failed to get adapter properties");
 208                 dbus_message_unref(message);
 209                 return;
 210         }
 211
 212         dbus_pending_call_set_notify(call, properties_reply, message, NULL);
 213 }
 214
 215 static void remove_adapter(DBusConnection *connection, const char *path)
 216 {
 217         struct connman_element *device;
 218
 219         DBG("path %s", path);
 220
 221         device = find_adapter(path);
 222         if (device == NULL)
 223                 return;
 224
 225         device_list = g_slist_remove(device_list, device);
 226
 227         connman_element_unregister(device);
 228         connman_element_unref(device);
 229 }
 230
 231 static void adapters_reply(DBusPendingCall *call, void *user_data)
 232 {
 233         DBusConnection *connection = user_data;
 234         DBusMessage *reply;
 235         DBusError error;
 236         char **adapters;
 237         int i, num_adapters;
 238
 239         DBG("");
 240
 241         reply = dbus_pending_call_steal_reply(call);
 242
 243         dbus_error_init(&error);
 244
 245         if (dbus_message_get_args(reply, &error,
 246                                 DBUS_TYPE_ARRAY, DBUS_TYPE_OBJECT_PATH,
 247                                                 &adapters, &num_adapters,
 248                                                 DBUS_TYPE_INVALID) == FALSE) {
 249                 if (dbus_error_is_set(&error) == TRUE) {
 250                         connman_error("%s", error.message);
 251                         dbus_error_free(&error);
 252                 } else
 253                         connman_error("Wrong arguments for adapter list");
 254                 goto done;
 255         }
 256
 257         for (i = 0; i < num_adapters; i++)
 258                 add_adapter(connection, adapters[i]);
 259
 260         g_strfreev(adapters);
 261
 262 done:
 263         dbus_message_unref(reply);
 264 }
 265
 266 static void bluetooth_connect(DBusConnection *connection, void *user_data)
 267 {
 268         DBusMessage *message;
 269         DBusPendingCall *call;
 270
 271         DBG("connection %p", connection);
 272
 273         message = dbus_message_new_method_call(BLUEZ_SERVICE, "/",
 274                                 BLUEZ_MANAGER_INTERFACE, "ListAdapters");
 275         if (message == NULL)
 276                 return;
 277
 278         if (dbus_connection_send_with_reply(connection, message,
 279                                                 &call, TIMEOUT) == FALSE) {
 280                 connman_error("Failed to get Bluetooth adapters");
 281                 dbus_message_unref(message);
 282                 return;
 283         }
 284
 285         dbus_pending_call_set_notify(call, adapters_reply, connection, NULL);
 286
 287         dbus_message_unref(message);
 288 }
 289
 290 static void bluetooth_disconnect(DBusConnection *connection, void *user_data)
 291 {
 292         GSList *list;
 293
 294         DBG("connection %p", connection);
 295
 296         for (list = device_list; list; list = list->next) {
 297                 struct connman_element *device = list->data;
 298
 299                 connman_element_unregister(device);
 300                 connman_element_unref(device);
 301         }
 302
 303         g_slist_free(device_list);
 304         device_list = NULL;
 305 }
 306
 307 static DBusHandlerResult bluetooth_signal(DBusConnection *connection,
 308                                         DBusMessage *message, void *user_data)
 309 {
 310         DBG("connection %p", connection);
 311
 312         if (dbus_message_is_signal(message, BLUEZ_ADAPTER_INTERFACE,
 313                                                 PROPERTY_CHANGED) == TRUE) {
 314                 property_changed(connection, message);
 315         } else if (dbus_message_is_signal(message, BLUEZ_MANAGER_INTERFACE,
 316                                                 ADAPTER_ADDED) == TRUE) {
 317                 const char *path;
 318                 dbus_message_get_args(message, NULL,
 319                                         DBUS_TYPE_OBJECT_PATH, &path,
 320                                                         DBUS_TYPE_INVALID);
 321                 add_adapter(connection, path);
 322         } else if (dbus_message_is_signal(message, BLUEZ_MANAGER_INTERFACE,
 323                                                 ADAPTER_REMOVED) == TRUE) {
 324                 const char *path;
 325                 dbus_message_get_args(message, NULL,
 326                                         DBUS_TYPE_OBJECT_PATH, &path,
 327                                                         DBUS_TYPE_INVALID);
 328                 remove_adapter(connection, path);
 329         }
 330
 331         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 332 }
 333
 334 static DBusConnection *connection;
 335 static guint watch;
 336
 337 static const char *added_rule = "type=signal,member=" ADAPTER_ADDED
 338                                         ",interface=" BLUEZ_MANAGER_INTERFACE;
 339 static const char *removed_rule = "type=signal,member=" ADAPTER_REMOVED
 340                                         ",interface=" BLUEZ_MANAGER_INTERFACE;
 341
 342 static const char *adapter_rule = "type=signal,member=" PROPERTY_CHANGED
 343                                         ",interface=" BLUEZ_ADAPTER_INTERFACE;
 344
 345 static int bluetooth_init(void)
 346 {
 347         int err = -EIO;
 348
 349         connection = dbus_bus_get(DBUS_BUS_SYSTEM, NULL);
 350         if (connection == NULL)
 351                 return -EIO;
 352
 353         if (dbus_connection_add_filter(connection, bluetooth_signal,
 354                                                         NULL, NULL) == FALSE)
 355                 goto unref;
 356
 357         err = connman_driver_register(&bluetooth_driver);
 358         if (err < 0)
 359                 goto remove;
 360
 361         watch = g_dbus_add_service_watch(connection, BLUEZ_SERVICE,
 362                         bluetooth_connect, bluetooth_disconnect, NULL, NULL);
 363         if (watch == 0) {
 364                 connman_driver_unregister(&bluetooth_driver);
 365                 err = -EIO;
 366                 goto remove;
 367         }
 368
 369         if (g_dbus_check_service(connection, BLUEZ_SERVICE) == TRUE)
 370                 bluetooth_connect(connection, NULL);
 371
 372         dbus_bus_add_match(connection, added_rule, NULL);
 373         dbus_bus_add_match(connection, removed_rule, NULL);
 374         dbus_bus_add_match(connection, adapter_rule, NULL);
 375         dbus_connection_flush(connection);
 376
 377         return 0;
 378
 379 remove:
 380         dbus_connection_remove_filter(connection, bluetooth_signal, NULL);
 381
 382 unref:
 383         dbus_connection_unref(connection);
 384
 385         return err;
 386 }
 387
 388 static void bluetooth_exit(void)
 389 {
 390         dbus_bus_remove_match(connection, adapter_rule, NULL);
 391         dbus_bus_remove_match(connection, removed_rule, NULL);
 392         dbus_bus_remove_match(connection, added_rule, NULL);
 393         dbus_connection_flush(connection);
 394
 395         g_dbus_remove_watch(connection, watch);
 396
 397         bluetooth_disconnect(connection, NULL);
 398
 399         connman_driver_unregister(&bluetooth_driver);
 400
 401         dbus_connection_remove_filter(connection, bluetooth_signal, NULL);
 402
 403         dbus_connection_unref(connection);
 404 }
 405
 406 CONNMAN_PLUGIN_DEFINE(bluetooth, "Bluetooth technology plugin", VERSION,
 407                                                 bluetooth_init, bluetooth_exit)