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                 gchar tmp = g_ascii_tolower(temp[i]);
 258
 259                 if (tmp < 'a' || tmp > 'z')
 260                         temp[i] = '_';
 261         }
 262
 263         element = find_pending_element(data, network->identifier);
 264         if (element == NULL) {
 265                 guint8 strength;
 266
 267                 element = connman_element_create(temp);
 268
 269                 element->type = CONNMAN_ELEMENT_TYPE_NETWORK;
 270                 element->index = parent->index;
 271
 272                 connman_element_add_static_property(element, "Name",
 273                                 DBUS_TYPE_STRING, &network->identifier);
 274
 275                 connman_element_add_static_array_property(element, "WiFi.SSID",
 276                         DBUS_TYPE_BYTE, &network->ssid, network->ssid_len);
 277
 278                 if (element->wifi.security == NULL) {
 279                         const char *security;
 280
 281                         if (network->has_rsn == TRUE)
 282                                 security = "wpa2";
 283                         else if (network->has_wpa == TRUE)
 284                                 security = "wpa";
 285                         else if (network->has_wep == TRUE)
 286                                 security = "wep";
 287                         else
 288                                 security = "none";
 289
 290                         element->wifi.security = g_strdup(security);
 291                 }
 292
 293                 strength = network->quality;
 294
 295                 connman_element_add_static_property(element, "WiFi.Strength",
 296                                                 DBUS_TYPE_BYTE, &strength);
 297
 298                 //connman_element_add_static_property(element, "WiFi.Noise",
 299                 //                      DBUS_TYPE_INT32, &network->noise);
 300
 301                 DBG("%s (%s) strength %d", network->identifier,
 302                                         element->wifi.security, strength);
 303
 304                 connman_element_register(element, parent);
 305         } else
 306                 data->pending = g_slist_remove(data->pending, element);
 307
 308         data->current = g_slist_append(data->current, element);
 309
 310         element->available = TRUE;
 311
 312         g_free(temp);
 313 }
 314
 315 static struct supplicant_callback wifi_callback = {
 316         .state_change   = state_change,
 317         .clear_results  = clear_results,
 318         .scan_result    = scan_result,
 319 };
 320
 321 static int wifi_probe(struct connman_element *element)
 322 {
 323         struct wifi_data *data;
 324
 325         DBG("element %p name %s", element, element->name);
 326
 327         data = g_try_new0(struct wifi_data, 1);
 328         if (data == NULL)
 329                 return -ENOMEM;
 330
 331         data->connected = FALSE;
 332
 333         connman_element_set_data(element, data);
 334
 335         return 0;
 336 }
 337
 338 static void wifi_remove(struct connman_element *element)
 339 {
 340         struct wifi_data *data = connman_element_get_data(element);
 341
 342         DBG("element %p name %s", element, element->name);
 343
 344         connman_element_set_data(element, NULL);
 345
 346         g_free(data->identifier);
 347         g_free(data);
 348 }
 349
 350 static int wifi_update(struct connman_element *element)
 351 {
 352         DBG("element %p name %s", element, element->name);
 353
 354         __supplicant_scan(element);
 355
 356         return 0;
 357 }
 358
 359 static int wifi_enable(struct connman_element *element)
 360 {
 361         int err;
 362
 363         DBG("element %p name %s", element, element->name);
 364
 365         err = __supplicant_start(element, &wifi_callback);
 366         if (err < 0)
 367                 return err;
 368
 369         __supplicant_scan(element);
 370
 371         return 0;
 372 }
 373
 374 static int wifi_disable(struct connman_element *element)
 375 {
 376         struct wifi_data *data = connman_element_get_data(element);
 377         GSList *list;
 378
 379         DBG("element %p name %s", element, element->name);
 380
 381         if (data->timer > 0) {
 382                 g_source_remove(data->timer);
 383                 data->timer = 0;
 384         }
 385
 386         __supplicant_disconnect(element);
 387
 388         for (list = data->pending; list; list = list->next) {
 389                 struct connman_element *network = list->data;
 390
 391                 connman_element_unref(network);
 392         }
 393
 394         g_slist_free(data->pending);
 395         data->pending = NULL;
 396
 397         for (list = data->current; list; list = list->next) {
 398                 struct connman_element *network = list->data;
 399
 400                 connman_element_unref(network);
 401         }
 402
 403         g_slist_free(data->current);
 404         data->current = NULL;
 405
 406         connman_element_unregister_children(element);
 407
 408         __supplicant_stop(element);
 409
 410         return 0;
 411 }
 412
 413 static struct connman_driver wifi_driver = {
 414         .name           = "wifi-device",
 415         .type           = CONNMAN_ELEMENT_TYPE_DEVICE,
 416         .subtype        = CONNMAN_ELEMENT_SUBTYPE_WIFI,
 417         .probe          = wifi_probe,
 418         .remove         = wifi_remove,
 419         .update         = wifi_update,
 420         .enable         = wifi_enable,
 421         .disable        = wifi_disable,
 422 };
 423
 424 static GSList *device_list = NULL;
 425
 426 static void wifi_newlink(unsigned short type, int index,
 427                                         unsigned flags, unsigned change)
 428 {
 429         struct connman_element *device;
 430         GSList *list;
 431         gboolean exists = FALSE;
 432         gchar *name, *devname;
 433         struct iwreq iwr;
 434         int sk;
 435
 436         DBG("index %d", index);
 437
 438         if (type != ARPHRD_ETHER)
 439                 return;
 440
 441         name = inet_index2ident(index, "dev_");
 442         devname = inet_index2name(index);
 443
 444         memset(&iwr, 0, sizeof(iwr));
 445         strncpy(iwr.ifr_ifrn.ifrn_name, devname, IFNAMSIZ);
 446
 447         sk = socket(PF_INET, SOCK_DGRAM, 0);
 448
 449         if (ioctl(sk, SIOCGIWNAME, &iwr) < 0) {
 450                 g_free(name);
 451                 close(sk);
 452                 return;
 453         }
 454
 455         close(sk);
 456
 457         for (list = device_list; list; list = list->next) {
 458                 struct connman_element *device = list->data;
 459
 460                 if (device->index == index) {
 461                         exists = TRUE;
 462                         break;
 463                 }
 464         }
 465
 466         if (exists == TRUE) {
 467                 g_free(name);
 468                 return;
 469         }
 470
 471         device = connman_element_create(NULL);
 472         device->type = CONNMAN_ELEMENT_TYPE_DEVICE;
 473         device->subtype = CONNMAN_ELEMENT_SUBTYPE_WIFI;
 474
 475         device->index = index;
 476         device->name = name;
 477         device->devname = devname;
 478
 479         connman_element_register(device, NULL);
 480         device_list = g_slist_append(device_list, device);
 481 }
 482
 483 static void wifi_dellink(unsigned short type, int index,
 484                                         unsigned flags, unsigned change)
 485 {
 486         GSList *list;
 487
 488         DBG("index %d", index);
 489
 490         for (list = device_list; list; list = list->next) {
 491                 struct connman_element *device = list->data;
 492
 493                 if (device->index == index) {
 494                         device_list = g_slist_remove(device_list, device);
 495                         connman_element_unregister(device);
 496                         connman_element_unref(device);
 497                         break;
 498                 }
 499         }
 500 }
 501
 502 static struct connman_rtnl wifi_rtnl = {
 503         .name           = "wifi",
 504         .newlink        = wifi_newlink,
 505         .dellink        = wifi_dellink,
 506 };
 507
 508 static void supplicant_connect(DBusConnection *connection, void *user_data)
 509 {
 510         DBG("connection %p", connection);
 511
 512         __supplicant_init(connection);
 513
 514         if (connman_rtnl_register(&wifi_rtnl) < 0)
 515                 return;
 516
 517         connman_rtnl_send_getlink();
 518 }
 519
 520 static void supplicant_disconnect(DBusConnection *connection, void *user_data)
 521 {
 522         GSList *list;
 523
 524         DBG("connection %p", connection);
 525
 526         connman_rtnl_unregister(&wifi_rtnl);
 527
 528         for (list = device_list; list; list = list->next) {
 529                 struct connman_element *device = list->data;
 530
 531                 connman_element_unregister(device);
 532                 connman_element_unref(device);
 533         }
 534
 535         g_slist_free(device_list);
 536         device_list = NULL;
 537
 538         __supplicant_exit();
 539 }
 540
 541 static DBusConnection *connection;
 542 static guint watch;
 543
 544 static int wifi_init(void)
 545 {
 546         int err;
 547
 548         connection = dbus_bus_get(DBUS_BUS_SYSTEM, NULL);
 549         if (connection == NULL)
 550                 return -EIO;
 551
 552         err = connman_driver_register(&network_driver);
 553         if (err < 0) {
 554                 dbus_connection_unref(connection);
 555                 return err;
 556         }
 557
 558         err = connman_driver_register(&wifi_driver);
 559         if (err < 0) {
 560                 connman_driver_unregister(&network_driver);
 561                 dbus_connection_unref(connection);
 562                 return err;
 563         }
 564
 565         watch = g_dbus_add_service_watch(connection, SUPPLICANT_NAME,
 566                         supplicant_connect, supplicant_disconnect, NULL, NULL);
 567
 568         if (g_dbus_check_service(connection, SUPPLICANT_NAME) == TRUE)
 569                 supplicant_connect(connection, NULL);
 570
 571         return 0;
 572 }
 573
 574 static void wifi_exit(void)
 575 {
 576         connman_driver_unregister(&network_driver);
 577         connman_driver_unregister(&wifi_driver);
 578
 579         if (watch > 0)
 580                 g_dbus_remove_watch(connection, watch);
 581
 582         supplicant_disconnect(connection, NULL);
 583
 584         dbus_connection_unref(connection);
 585 }
 586
 587 CONNMAN_PLUGIN_DEFINE(wifi, "WiFi interface plugin", VERSION,
 588                                                         wifi_init, wifi_exit)