bt-api/bt-common.c

   1 /*
   2  * bluetooth-frwk
   3  *
   4  * Copyright (c) 2012-2013 Samsung Electronics Co., Ltd.
   5  *
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *
  10  *              http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  *
  18  */
  19
  20 #include <string.h>
  21 #include <fcntl.h>
  22 #include <unistd.h>
  23 #include <sys/types.h>
  24 #include <stdlib.h>
  25
  26 #include "bluetooth-api.h"
  27 #include "bluetooth-audio-api.h"
  28 #include "bluetooth-hid-api.h"
  29 #include "bluetooth-media-control.h"
  30 #include "bt-internal-types.h"
  31
  32 #include "bt-common.h"
  33 #include "bt-request-sender.h"
  34 #include "bt-event-handler.h"
  35
  36 static bt_user_info_t user_info[BT_MAX_USER_INFO];
  37 static DBusGConnection *system_conn = NULL;
  38
  39 void _bt_print_device_address_t(const bluetooth_device_address_t *addr)
  40 {
  41         BT_DBG("%2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X\n", addr->addr[0], addr->addr[1], addr->addr[2],
  42                                 addr->addr[3], addr->addr[4], addr->addr[5]);
  43 }
  44
  45 void _bt_set_user_data(int type, void *callback, void *user_data)
  46 {
  47         user_info[type].cb = callback;
  48         user_info[type].user_data = user_data;
  49 }
  50
  51 bt_user_info_t *_bt_get_user_data(int type)
  52 {
  53         return &user_info[type];
  54 }
  55
  56 void _bt_common_event_cb(int event, int result, void *param,
  57                                         void *callback, void *user_data)
  58 {
  59         bluetooth_event_param_t bt_event = { 0, };
  60         bt_event.event = event;
  61         bt_event.result = result;
  62         bt_event.param_data = param;
  63
  64         if (callback)
  65                 ((bluetooth_cb_func_ptr)callback)(bt_event.event, &bt_event,
  66                                         user_data);
  67 }
  68
  69 void _bt_input_event_cb(int event, int result, void *param,
  70                                         void *callback, void *user_data)
  71 {
  72         hid_event_param_t bt_event = { 0, };
  73         bt_event.event = event;
  74         bt_event.result = result;
  75         bt_event.param_data = param;
  76
  77         if (callback)
  78                 ((hid_cb_func_ptr)callback)(bt_event.event, &bt_event,
  79                                         user_data);
  80 }
  81
  82 void _bt_headset_event_cb(int event, int result, void *param,
  83                                         void *callback, void *user_data)
  84 {
  85         bt_audio_event_param_t bt_event = { 0, };
  86         bt_event.event = event;
  87         bt_event.result = result;
  88         bt_event.param_data = param;
  89
  90         if (callback)
  91                 ((bt_audio_func_ptr)callback)(bt_event.event, &bt_event,
  92                                         user_data);
  93 }
  94
  95 void _bt_avrcp_event_cb(int event, int result, void *param,
  96                                         void *callback, void *user_data)
  97 {
  98         media_event_param_t bt_event = { 0, };
  99         bt_event.event = event;
 100         bt_event.result = result;
 101         bt_event.param_data = param;
 102
 103         if (callback)
 104                 ((media_cb_func_ptr)callback)(bt_event.event, &bt_event,
 105                                         user_data);
 106 }
 107
 108 void _bt_divide_device_class(bluetooth_device_class_t *device_class,
 109                                 unsigned int cod)
 110 {
 111         ret_if(device_class == NULL);
 112
 113         device_class->major_class = (unsigned short)(cod & 0x00001F00) >> 8;
 114         device_class->minor_class = (unsigned short)((cod & 0x000000FC));
 115         device_class->service_class = (unsigned long)((cod & 0x00FF0000));
 116
 117         if (cod & 0x002000) {
 118                 device_class->service_class |=
 119                 BLUETOOTH_DEVICE_SERVICE_CLASS_LIMITED_DISCOVERABLE_MODE;
 120         }
 121 }
 122
 123 void _bt_convert_addr_string_to_type(unsigned char *addr,
 124                                         const char *address)
 125 {
 126         int i;
 127         char *ptr = NULL;
 128
 129         ret_if(address == NULL);
 130         ret_if(addr == NULL);
 131
 132         for (i = 0; i < BT_ADDRESS_LENGTH_MAX; i++) {
 133                 addr[i] = strtol(address, &ptr, 16);
 134                 if (ptr != NULL) {
 135                         if (ptr[0] != ':')
 136                                 return;
 137
 138                         address = ptr + 1;
 139                 }
 140         }
 141 }
 142
 143 void _bt_convert_addr_type_to_string(char *address,
 144                                 unsigned char *addr)
 145 {
 146         ret_if(address == NULL);
 147         ret_if(addr == NULL);
 148
 149         g_snprintf(address, BT_ADDRESS_STRING_SIZE,
 150                         "%2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X",
 151                         addr[0], addr[1], addr[2],
 152                         addr[3], addr[4], addr[5]);
 153 }
 154
 155 int _bt_copy_utf8_string(char *dest, const char *src, unsigned int length)
 156 {
 157         int i;
 158         char *p = src;
 159         char *next;
 160         int count;
 161
 162         if (dest == NULL || src == NULL)
 163                 return BLUETOOTH_ERROR_INVALID_PARAM;
 164
 165         i = 0;
 166         while (*p != '\0' && i < length) {
 167                 next = g_utf8_next_char(p);
 168                 count = next - p;
 169
 170                 while (count > 0 && ((i + count) < length)) {
 171                         dest[i++] = *p;
 172                         p++;
 173                         count --;
 174                 }
 175                 p = next;
 176         }
 177         return BLUETOOTH_ERROR_NONE;
 178 }
 179
 180 int _bt_get_adapter_path(DBusGConnection *conn, char *path)
 181 {
 182         GError *err = NULL;
 183         DBusGProxy *manager_proxy = NULL;
 184         char *adapter_path = NULL;
 185         int ret = BLUETOOTH_ERROR_NONE;
 186
 187         retv_if(conn == NULL, BLUETOOTH_ERROR_INTERNAL);
 188
 189         manager_proxy = dbus_g_proxy_new_for_name(conn, BT_BLUEZ_NAME,
 190                                 BT_MANAGER_PATH, BT_MANAGER_INTERFACE);
 191
 192         retv_if(manager_proxy == NULL, BLUETOOTH_ERROR_INTERNAL);
 193
 194         if (!dbus_g_proxy_call(manager_proxy, "DefaultAdapter", &err,
 195                                 G_TYPE_INVALID, DBUS_TYPE_G_OBJECT_PATH,
 196                                 &adapter_path,
 197                                 G_TYPE_INVALID)) {
 198                 if (err != NULL) {
 199                         BT_ERR("Getting DefaultAdapter failed: [%s]\n", err->message);
 200                         g_error_free(err);
 201                 }
 202                 g_object_unref(manager_proxy);
 203                 return BLUETOOTH_ERROR_INTERNAL;
 204         }
 205
 206         if (adapter_path == NULL || strlen(adapter_path) >= BT_ADAPTER_OBJECT_PATH_MAX) {
 207                 BT_ERR("Adapter path is inproper\n");
 208                 ret = BLUETOOTH_ERROR_INTERNAL;
 209                 goto done;
 210         }
 211
 212         if (path)
 213                 g_strlcpy(path, adapter_path, BT_ADAPTER_OBJECT_PATH_MAX);
 214 done:
 215         g_free(adapter_path);
 216         g_object_unref(manager_proxy);
 217
 218         return ret;
 219 }
 220
 221 DBusGProxy *_bt_get_adapter_proxy(DBusGConnection *conn)
 222 {
 223         GError *err = NULL;
 224         DBusGProxy *manager_proxy = NULL;
 225         DBusGProxy *adapter_proxy = NULL;
 226         char *adapter_path = NULL;
 227
 228         retv_if(conn == NULL, NULL);
 229
 230         manager_proxy = dbus_g_proxy_new_for_name(conn, BT_BLUEZ_NAME,
 231                                 BT_MANAGER_PATH, BT_MANAGER_INTERFACE);
 232
 233         retv_if(manager_proxy == NULL, NULL);
 234
 235         if (!dbus_g_proxy_call(manager_proxy, "DefaultAdapter", &err,
 236                                 G_TYPE_INVALID, DBUS_TYPE_G_OBJECT_PATH,
 237                                 &adapter_path,
 238                                 G_TYPE_INVALID)) {
 239                 if (err != NULL) {
 240                         BT_ERR("Getting DefaultAdapter failed: [%s]\n", err->message);
 241                         g_error_free(err);
 242                 }
 243                 g_object_unref(manager_proxy);
 244                 return NULL;
 245         }
 246
 247         if (adapter_path == NULL || strlen(adapter_path) >= BT_ADAPTER_OBJECT_PATH_MAX) {
 248                 BT_ERR("Adapter path is inproper\n");
 249                 g_free(adapter_path);
 250                 g_object_unref(manager_proxy);
 251                 return NULL;
 252         }
 253
 254         adapter_proxy = dbus_g_proxy_new_for_name(conn,
 255                                         BT_BLUEZ_NAME,
 256                                         adapter_path,
 257                                         BT_ADAPTER_INTERFACE);
 258         g_free(adapter_path);
 259         g_object_unref(manager_proxy);
 260
 261         return adapter_proxy;
 262 }
 263
 264 void _bt_device_path_to_address(const char *device_path, char *device_address)
 265 {
 266         char address[BT_ADDRESS_STRING_SIZE] = { 0 };
 267         char *dev_addr = NULL;
 268
 269         if (!device_path || !device_address)
 270                 return;
 271
 272         dev_addr = strstr(device_path, "dev_");
 273         if (dev_addr != NULL) {
 274                 char *pos = NULL;
 275                 dev_addr += 4;
 276                 g_strlcpy(address, dev_addr, sizeof(address));
 277
 278                 while ((pos = strchr(address, '_')) != NULL) {
 279                         *pos = ':';
 280                 }
 281
 282                 g_strlcpy(device_address, address, BT_ADDRESS_STRING_SIZE);
 283         }
 284 }
 285
 286 DBusGConnection *__bt_init_system_gconn(void)
 287 {
 288         g_type_init();
 289
 290         if (system_conn == NULL)
 291                 system_conn = dbus_g_bus_get(DBUS_BUS_SYSTEM, NULL);
 292
 293         return system_conn;
 294 }
 295
 296 DBusGConnection *_bt_get_system_gconn(void)
 297 {
 298         return (system_conn) ? system_conn : __bt_init_system_gconn();
 299 }
 300
 301 DBusConnection *_bt_get_system_conn(void)
 302 {
 303         DBusGConnection *g_conn;
 304
 305         if (system_conn == NULL) {
 306                 g_conn = __bt_init_system_gconn();
 307         } else {
 308                 g_conn = system_conn;
 309         }
 310
 311         retv_if(g_conn == NULL, NULL);
 312
 313         return dbus_g_connection_get_connection(g_conn);
 314 }
 315
 316 BT_EXPORT_API int bluetooth_is_supported(void)
 317 {
 318         int is_supported = 0;
 319         int len = 0;
 320         int fd = -1;
 321         rfkill_event event;
 322
 323         fd = open(RFKILL_NODE, O_RDONLY);
 324         if (fd < 0) {
 325                 BT_DBG("Fail to open RFKILL node");
 326                 return BLUETOOTH_ERROR_INTERNAL;
 327         }
 328
 329         if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) {
 330                 BT_DBG("Fail to set RFKILL node to non-blocking");
 331                 close(fd);
 332                 return BLUETOOTH_ERROR_INTERNAL;
 333         }
 334
 335         while (1) {
 336                 len = read(fd, &event, sizeof(event));
 337                 if (len < 0) {
 338                         BT_DBG("Fail to read events");
 339                         break;
 340                 }
 341
 342                 if (len != RFKILL_EVENT_SIZE) {
 343                         BT_DBG("The size is wrong\n");
 344                         continue;
 345                 }
 346
 347                 if (event.type == RFKILL_TYPE_BLUETOOTH) {
 348                         is_supported = 1;
 349                         break;
 350                 }
 351         }
 352
 353         close(fd);
 354
 355         BT_DBG("supported: %d", is_supported);
 356
 357         return is_supported;
 358 }
 359
 360 BT_EXPORT_API int bluetooth_register_callback(bluetooth_cb_func_ptr callback_ptr, void *user_data)
 361 {
 362         int ret;
 363
 364         __bt_init_system_gconn();
 365
 366         ret = _bt_init_event_handler();
 367
 368         if (ret != BLUETOOTH_ERROR_NONE &&
 369              ret != BLUETOOTH_ERROR_ALREADY_INITIALIZED) {
 370                 BT_ERR("Fail to init the event handler");
 371                 return ret;
 372         }
 373
 374         _bt_set_user_data(BT_COMMON, (void *)callback_ptr, user_data);
 375
 376         /* Register All events */
 377         _bt_register_event(BT_ADAPTER_EVENT, (void *)callback_ptr, user_data);
 378         _bt_register_event(BT_DEVICE_EVENT, (void *)callback_ptr, user_data);
 379         _bt_register_event(BT_NETWORK_EVENT, (void *)callback_ptr, user_data);
 380         _bt_register_event(BT_RFCOMM_CLIENT_EVENT, (void *)callback_ptr, user_data);
 381         _bt_register_event(BT_RFCOMM_SERVER_EVENT, (void *)callback_ptr, user_data);
 382
 383         return BLUETOOTH_ERROR_NONE;
 384 }
 385
 386 BT_EXPORT_API int bluetooth_unregister_callback(void)
 387 {
 388         _bt_unregister_event(BT_ADAPTER_EVENT);
 389         _bt_unregister_event(BT_DEVICE_EVENT);
 390         _bt_unregister_event(BT_NETWORK_EVENT);
 391         _bt_unregister_event(BT_RFCOMM_CLIENT_EVENT);
 392         _bt_unregister_event(BT_RFCOMM_SERVER_EVENT);
 393
 394         _bt_set_user_data(BT_COMMON, NULL, NULL);
 395
 396         if (system_conn) {
 397                 dbus_g_connection_unref(system_conn);
 398                 system_conn = NULL;
 399         }
 400
 401         return BLUETOOTH_ERROR_NONE;
 402 }
 403