vcs.maemo.org Git - connman/blob - plugins/wifi.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 <stdio.h>
  27 #include <unistd.h>
  28 #include <string.h>
  29 #include <sys/ioctl.h>
  30 #include <sys/socket.h>
  31 #include <linux/if_arp.h>
  32 #include <linux/wireless.h>
  33
  34 #include <gdbus.h>
  35
  36 #include <connman/plugin.h>
  37 #include <connman/driver.h>
  38 #include <connman/rtnl.h>
  39 #include <connman/log.h>
  40
  41 #include "inet.h"
  42 #include "supplicant.h"
  43
  44 #define CLEANUP_PENDING_TIMEOUT  8      /* in seconds */
  45
  46 struct wifi_data {
  47         GSList *current;
  48         GSList *pending;
  49         guint timer;
  50         gchar *identifier;
  51         gboolean connected;
  52 };
  53
  54 static int network_probe(struct connman_element *element)
  55 {
  56         DBG("element %p name %s", element, element->name);
  57
  58         return 0;
  59 }
  60
  61 static void network_remove(struct connman_element *element)
  62 {
  63         DBG("element %p name %s", element, element->name);
  64 }
  65
  66 static int network_enable(struct connman_element *element)
  67 {
  68         char *name, *security = NULL, *passphrase = NULL;
  69         unsigned char *ssid;
  70         int ssid_len;
  71
  72         DBG("element %p name %s", element, element->name);
  73
  74         if (connman_element_get_static_property(element,
  75                                                 "Name", &name) == FALSE)
  76                 return -EIO;
  77
  78         if (connman_element_get_static_array_property(element,
  79                                 "WiFi.SSID", &ssid, &ssid_len) == FALSE)
  80                 return -EIO;
  81
  82         if (element->parent != NULL) {
  83                 struct wifi_data *data = connman_element_get_data(element->parent);
  84
  85                 if (data->connected == TRUE)
  86                         return -EBUSY;
  87
  88                 if (data != NULL) {
  89                         g_free(data->identifier);
  90                         data->identifier = g_strdup(name);
  91                 }
  92         }
  93
  94         connman_element_get_value(element,
  95                         CONNMAN_PROPERTY_ID_WIFI_SECURITY, &security);
  96
  97         connman_element_get_value(element,
  98                         CONNMAN_PROPERTY_ID_WIFI_PASSPHRASE, &passphrase);
  99
 100         DBG("name %s security %s passhprase %s",
 101                                         name, security, passphrase);
 102
 103         if (__supplicant_connect(element, ssid, ssid_len,
 104                                                 security, passphrase) < 0)
 105                 connman_error("Failed to initiate connect");
 106
 107         return 0;
 108 }
 109
 110 static int network_disable(struct connman_element *element)
 111 {
 112         DBG("element %p name %s", element, element->name);
 113
 114         connman_element_unregister_children(element);
 115
 116         __supplicant_disconnect(element);
 117
 118         return 0;
 119 }
 120
 121 static struct connman_driver network_driver = {
 122         .name           = "wifi-network",
 123         .type           = CONNMAN_ELEMENT_TYPE_NETWORK,
 124         .subtype        = CONNMAN_ELEMENT_SUBTYPE_WIFI,
 125         .probe          = network_probe,
 126         .remove         = network_remove,
 127         .enable         = network_enable,
 128         .disable        = network_disable,
 129 };
 130
 131 static struct connman_element *find_current_element(struct wifi_data *data,
 132                                                         const char *identifier)
 133 {
 134         GSList *list;
 135
 136         for (list = data->current; list; list = list->next) {
 137                 struct connman_element *element = list->data;
 138
 139                 if (connman_element_match_static_property(element,
 140                                         "Name", &identifier) == TRUE)
 141                         return element;
 142         }
 143
 144         return NULL;
 145 }
 146
 147 static struct connman_element *find_pending_element(struct wifi_data *data,
 148                                                         const char *identifier)
 149 {
 150         GSList *list;
 151
 152         for (list = data->pending; list; list = list->next) {
 153                 struct connman_element *element = list->data;
 154
 155                 if (connman_element_match_static_property(element,
 156                                         "Name", &identifier) == TRUE)
 157                         return element;
 158         }
 159
 160         return NULL;
 161 }
 162
 163 static void state_change(struct connman_element *parent,
 164                                                 enum supplicant_state state)
 165 {
 166         struct wifi_data *data = connman_element_get_data(parent);
 167         struct connman_element *element;
 168
 169         DBG("state %d", state);
 170
 171         if (data == NULL)
 172                 return;
 173
 174         if (data->identifier == NULL)
 175                 return;
 176
 177         element = find_current_element(data, data->identifier);
 178         if (element == NULL)
 179                 return;
 180
 181         if (state == STATE_COMPLETED) {
 182                 struct connman_element *dhcp;
 183
 184                 data->connected = TRUE;
 185
 186                 dhcp = connman_element_create(NULL);
 187
 188                 dhcp->type = CONNMAN_ELEMENT_TYPE_DHCP;
 189                 dhcp->index = element->index;
 190
 191                 connman_element_register(dhcp, element);
 192         } else if (state == STATE_DISCONNECTED || state == STATE_INACTIVE)
 193                 data->connected = FALSE;
 194 }
 195
 196 static gboolean cleanup_pending(gpointer user_data)
 197 {
 198         struct wifi_data *data = user_data;
 199         GSList *list;
 200
 201         DBG("");
 202
 203         for (list = data->pending; list; list = list->next) {
 204                 struct connman_element *element = list->data;
 205
 206                 DBG("element %p name %s", element, element->name);
 207
 208                 connman_element_unregister(element);
 209                 connman_element_unref(element);
 210         }
 211
 212         g_slist_free(data->pending);
 213         data->pending = NULL;
 214
 215         data->timer = 0;
 216
 217         return FALSE;
 218 }
 219
 220 static void clear_results(struct connman_element *parent)
 221 {
 222         struct wifi_data *data = connman_element_get_data(parent);
 223
 224         DBG("pending %d", g_slist_length(data->pending));
 225         DBG("current %d", g_slist_length(data->current));
 226
 227         data->pending = data->current;
 228         data->current = NULL;
 229
 230         if (data->timer == 0)
 231                 data->timer = g_timeout_add_seconds(CLEANUP_PENDING_TIMEOUT,
 232                                                         cleanup_pending, data);
 233 }
 234
 235 static void scan_result(struct connman_element *parent,
 236                                         struct supplicant_network *network)
 237 {
 238         struct wifi_data *data = connman_element_get_data(parent);
 239         struct connman_element *element;
 240         gchar *temp;
 241         int i;
 242
 243         DBG("network %p identifier %s", network, network->identifier);
 244
 245         if (data == NULL)
 246                 return;
 247
 248         if (network->identifier == NULL)
 249                 return;
 250
 251         if (network->identifier[0] == '\0')
 252                 return;
 253
 254         temp = g_strdup(network->identifier);
 255
 256         for (i = 0; i < strlen(temp); i++) {
 257                 if (temp[i] == ' ' || temp[i] == '.')
 258                         temp[i] = '_';
 259                 else if (temp[i] == '-' || temp[i] == '+')
 260                         temp[i] = '_';
 261                 else if (temp[i] == '!' || temp[i] == '?')
 262                         temp[i] = '_';
 263                 else if (temp[i] == '(' || temp[i] == ')')
 264                         temp[i] = '_';
 265                 else if (g_ascii_isprint(temp[i]) == FALSE)
 266                         temp[i] = '_';
 267                 temp[i] = g_ascii_tolower(temp[i]);
 268         }
 269
 270         element = find_pending_element(data, network->identifier);
 271         if (element == NULL) {
 272                 guint8 strength;
 273
 274                 element = connman_element_create(temp);
 275
 276                 element->type = CONNMAN_ELEMENT_TYPE_NETWORK;
 277                 element->index = parent->index;
 278
 279                 connman_element_add_static_property(element, "Name",
 280                                 DBUS_TYPE_STRING, &network->identifier);
 281
 282                 connman_element_add_static_array_property(element, "WiFi.SSID",
 283                         DBUS_TYPE_BYTE, &network->ssid, network->ssid_len);
 284
 285                 if (element->wifi.security == NULL) {
 286                         const char *security;
 287
 288                         if (network->has_rsn == TRUE)
 289                                 security = "wpa2";
 290                         else if (network->has_wpa == TRUE)
 291                                 security = "wpa";
 292                         else if (network->has_wep == TRUE)
 293                                 security = "wep";
 294                         else
 295                                 security = "none";
 296
 297                         element->wifi.security = g_strdup(security);
 298                 }
 299
 300                 strength = network->quality;
 301
 302                 connman_element_add_static_property(element, "WiFi.Strength",
 303                                                 DBUS_TYPE_BYTE, &strength);
 304
 305                 //connman_element_add_static_property(element, "WiFi.Noise",
 306                 //                      DBUS_TYPE_INT32, &network->noise);
 307
 308                 DBG("%s (%s) strength %d", network->identifier,
 309                                         element->wifi.security, strength);
 310
 311                 connman_element_register(element, parent);
 312         } else
 313                 data->pending = g_slist_remove(data->pending, element);
 314
 315         data->current = g_slist_append(data->current, element);
 316
 317         element->available = TRUE;
 318
 319         g_free(temp);
 320 }
 321
 322 static struct supplicant_callback wifi_callback = {
 323         .state_change   = state_change,
 324         .clear_results  = clear_results,
 325         .scan_result    = scan_result,
 326 };
 327
 328 static int wifi_probe(struct connman_element *element)
 329 {
 330         struct wifi_data *data;
 331
 332         DBG("element %p name %s", element, element->name);
 333
 334         data = g_try_new0(struct wifi_data, 1);
 335         if (data == NULL)
 336                 return -ENOMEM;
 337
 338         data->connected = FALSE;
 339
 340         connman_element_set_data(element, data);
 341
 342         return 0;
 343 }
 344
 345 static void wifi_remove(struct connman_element *element)
 346 {
 347         struct wifi_data *data = connman_element_get_data(element);
 348
 349         DBG("element %p name %s", element, element->name);
 350
 351         connman_element_set_data(element, NULL);
 352
 353         g_free(data->identifier);
 354         g_free(data);
 355 }
 356
 357 static int wifi_update(struct connman_element *element)
 358 {
 359         DBG("element %p name %s", element, element->name);
 360
 361         __supplicant_scan(element);
 362
 363         return 0;
 364 }
 365
 366 static int wifi_enable(struct connman_element *element)
 367 {
 368         int err;
 369
 370         DBG("element %p name %s", element, element->name);
 371
 372         err = __supplicant_start(element, &wifi_callback);
 373         if (err < 0)
 374                 return err;
 375
 376         __supplicant_scan(element);
 377
 378         return 0;
 379 }
 380
 381 static int wifi_disable(struct connman_element *element)
 382 {
 383         struct wifi_data *data = connman_element_get_data(element);
 384         GSList *list;
 385
 386         DBG("element %p name %s", element, element->name);
 387
 388         if (data->timer > 0) {
 389                 g_source_remove(data->timer);
 390                 data->timer = 0;
 391         }
 392
 393         __supplicant_disconnect(element);
 394
 395         for (list = data->pending; list; list = list->next) {
 396                 struct connman_element *network = list->data;
 397
 398                 connman_element_unref(network);
 399         }
 400
 401         g_slist_free(data->pending);
 402         data->pending = NULL;
 403
 404         for (list = data->current; list; list = list->next) {
 405                 struct connman_element *network = list->data;
 406
 407                 connman_element_unref(network);
 408         }
 409
 410         g_slist_free(data->current);
 411         data->current = NULL;
 412
 413         connman_element_unregister_children(element);
 414
 415         __supplicant_stop(element);
 416
 417         return 0;
 418 }
 419
 420 static struct connman_driver wifi_driver = {
 421         .name           = "wifi-device",
 422         .type           = CONNMAN_ELEMENT_TYPE_DEVICE,
 423         .subtype        = CONNMAN_ELEMENT_SUBTYPE_WIFI,
 424         .probe          = wifi_probe,
 425         .remove         = wifi_remove,
 426         .update         = wifi_update,
 427         .enable         = wifi_enable,
 428         .disable        = wifi_disable,
 429 };
 430
 431 static GSList *device_list = NULL;
 432
 433 static void wifi_newlink(unsigned short type, int index,
 434                                         unsigned flags, unsigned change)
 435 {
 436         struct connman_element *device;
 437         GSList *list;
 438         gboolean exists = FALSE;
 439         gchar *name, *devname;
 440         struct iwreq iwr;
 441         int sk;
 442
 443         DBG("index %d", index);
 444
 445         if (type != ARPHRD_ETHER)
 446                 return;
 447
 448         name = inet_index2ident(index, "dev_");
 449         devname = inet_index2name(index);
 450
 451         memset(&iwr, 0, sizeof(iwr));
 452         strncpy(iwr.ifr_ifrn.ifrn_name, devname, IFNAMSIZ);
 453
 454         sk = socket(PF_INET, SOCK_DGRAM, 0);
 455
 456         if (ioctl(sk, SIOCGIWNAME, &iwr) < 0) {
 457                 g_free(name);
 458                 close(sk);
 459                 return;
 460         }
 461
 462         close(sk);
 463
 464         for (list = device_list; list; list = list->next) {
 465                 struct connman_element *device = list->data;
 466
 467                 if (device->index == index) {
 468                         exists = TRUE;
 469                         break;
 470                 }
 471         }
 472
 473         if (exists == TRUE) {
 474                 g_free(name);
 475                 return;
 476         }
 477
 478         device = connman_element_create(NULL);
 479         device->type = CONNMAN_ELEMENT_TYPE_DEVICE;
 480         device->subtype = CONNMAN_ELEMENT_SUBTYPE_WIFI;
 481
 482         device->index = index;
 483         device->name = name;
 484         device->devname = devname;
 485
 486         connman_element_register(device, NULL);
 487         device_list = g_slist_append(device_list, device);
 488 }
 489
 490 static void wifi_dellink(unsigned short type, int index,
 491                                         unsigned flags, unsigned change)
 492 {
 493         GSList *list;
 494
 495         DBG("index %d", index);
 496
 497         for (list = device_list; list; list = list->next) {
 498                 struct connman_element *device = list->data;
 499
 500                 if (device->index == index) {
 501                         device_list = g_slist_remove(device_list, device);
 502                         connman_element_unregister(device);
 503                         connman_element_unref(device);
 504                         break;
 505                 }
 506         }
 507 }
 508
 509 static struct connman_rtnl wifi_rtnl = {
 510         .name           = "wifi",
 511         .newlink        = wifi_newlink,
 512         .dellink        = wifi_dellink,
 513 };
 514
 515 static void supplicant_connect(DBusConnection *connection, void *user_data)
 516 {
 517         DBG("connection %p", connection);
 518
 519         __supplicant_init(connection);
 520
 521         if (connman_rtnl_register(&wifi_rtnl) < 0)
 522                 return;
 523
 524         connman_rtnl_send_getlink();
 525 }
 526
 527 static void supplicant_disconnect(DBusConnection *connection, void *user_data)
 528 {
 529         GSList *list;
 530
 531         DBG("connection %p", connection);
 532
 533         connman_rtnl_unregister(&wifi_rtnl);
 534
 535         for (list = device_list; list; list = list->next) {
 536                 struct connman_element *device = list->data;
 537
 538                 connman_element_unregister(device);
 539                 connman_element_unref(device);
 540         }
 541
 542         g_slist_free(device_list);
 543         device_list = NULL;
 544
 545         __supplicant_exit();
 546 }
 547
 548 static DBusConnection *connection;
 549 static guint watch;
 550
 551 static int wifi_init(void)
 552 {
 553         int err;
 554
 555         connection = dbus_bus_get(DBUS_BUS_SYSTEM, NULL);
 556         if (connection == NULL)
 557                 return -EIO;
 558
 559         err = connman_driver_register(&network_driver);
 560         if (err < 0) {
 561                 dbus_connection_unref(connection);
 562                 return err;
 563         }
 564
 565         err = connman_driver_register(&wifi_driver);
 566         if (err < 0) {
 567                 connman_driver_unregister(&network_driver);
 568                 dbus_connection_unref(connection);
 569                 return err;
 570         }
 571
 572         watch = g_dbus_add_service_watch(connection, SUPPLICANT_NAME,
 573                         supplicant_connect, supplicant_disconnect, NULL, NULL);
 574
 575         if (g_dbus_check_service(connection, SUPPLICANT_NAME) == TRUE)
 576                 supplicant_connect(connection, NULL);
 577
 578         return 0;
 579 }
 580
 581 static void wifi_exit(void)
 582 {
 583         connman_driver_unregister(&network_driver);
 584         connman_driver_unregister(&wifi_driver);
 585
 586         if (watch > 0)
 587                 g_dbus_remove_watch(connection, watch);
 588
 589         supplicant_disconnect(connection, NULL);
 590
 591         dbus_connection_unref(connection);
 592 }
 593
 594 CONNMAN_PLUGIN_DEFINE(wifi, "WiFi interface plugin", VERSION,
 595                                                         wifi_init, wifi_exit)