plugins/wifi.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2012  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 <unistd.h>
  27 #include <stdlib.h>
  28 #include <errno.h>
  29 #include <stdio.h>
  30 #include <string.h>
  31 #include <sys/ioctl.h>
  32 #include <sys/socket.h>
  33 #include <linux/if_arp.h>
  34 #include <linux/wireless.h>
  35 #include <net/ethernet.h>
  36
  37 #ifndef IFF_LOWER_UP
  38 #define IFF_LOWER_UP    0x10000
  39 #endif
  40
  41 #include <dbus/dbus.h>
  42 #include <glib.h>
  43
  44 #define CONNMAN_API_SUBJECT_TO_CHANGE
  45 #include <connman/plugin.h>
  46 #include <connman/inet.h>
  47 #include <connman/device.h>
  48 #include <connman/rtnl.h>
  49 #include <connman/technology.h>
  50 #include <connman/service.h>
  51 #include <connman/log.h>
  52 #include <connman/option.h>
  53 #include <connman/storage.h>
  54 #include <include/setting.h>
  55 #include <connman/provision.h>
  56
  57 #include <gsupplicant/gsupplicant.h>
  58
  59 #define CLEANUP_TIMEOUT   8     /* in seconds */
  60 #define INACTIVE_TIMEOUT  12    /* in seconds */
  61 #define MAXIMUM_RETRIES   2
  62 #define FAVORITE_MAXIMUM_RETRIES 4
  63
  64 #define BGSCAN_DEFAULT "simple:30:-45:300"
  65 #define AUTOSCAN_DEFAULT "exponential:3:300"
  66
  67 static struct connman_technology *wifi_technology = NULL;
  68
  69 struct hidden_params {
  70         char ssid[32];
  71         unsigned int ssid_len;
  72         char *identity;
  73         char *passphrase;
  74         gpointer user_data;
  75 };
  76
  77 /**
  78  * Used for autoscan "emulation".
  79  * Should be removed when wpa_s autoscan support will be by default.
  80  */
  81 struct autoscan_params {
  82         int base;
  83         int limit;
  84         int interval;
  85         unsigned int timeout;
  86 };
  87
  88 struct wifi_data {
  89         char *identifier;
  90         struct connman_device *device;
  91         struct connman_network *network;
  92         struct connman_network *pending_network;
  93         GSList *networks;
  94         GSupplicantInterface *interface;
  95         GSupplicantState state;
  96         connman_bool_t connected;
  97         connman_bool_t disconnecting;
  98         connman_bool_t tethering;
  99         connman_bool_t bridged;
 100         const char *bridge;
 101         int index;
 102         unsigned flags;
 103         unsigned int watch;
 104         int retries;
 105         struct hidden_params *hidden;
 106         /**
 107          * autoscan "emulation".
 108          */
 109         struct autoscan_params *autoscan;
 110 };
 111
 112 static GList *iface_list = NULL;
 113
 114 static void start_autoscan(struct connman_device *device);
 115
 116 static void handle_tethering(struct wifi_data *wifi)
 117 {
 118         if (wifi->tethering == FALSE)
 119                 return;
 120
 121         if (wifi->bridge == NULL)
 122                 return;
 123
 124         if (wifi->bridged == TRUE)
 125                 return;
 126
 127         DBG("index %d bridge %s", wifi->index, wifi->bridge);
 128
 129         if (connman_inet_add_to_bridge(wifi->index, wifi->bridge) < 0)
 130                 return;
 131
 132         wifi->bridged = TRUE;
 133 }
 134
 135 static void wifi_newlink(unsigned flags, unsigned change, void *user_data)
 136 {
 137         struct connman_device *device = user_data;
 138         struct wifi_data *wifi = connman_device_get_data(device);
 139
 140         if (wifi == NULL)
 141                 return;
 142
 143         DBG("index %d flags %d change %d", wifi->index, flags, change);
 144
 145         if (!change)
 146                 return;
 147
 148         if ((wifi->flags & IFF_UP) != (flags & IFF_UP)) {
 149                 if (flags & IFF_UP)
 150                         DBG("interface up");
 151                 else
 152                         DBG("interface down");
 153         }
 154
 155         if ((wifi->flags & IFF_LOWER_UP) != (flags & IFF_LOWER_UP)) {
 156                 if (flags & IFF_LOWER_UP) {
 157                         DBG("carrier on");
 158
 159                         handle_tethering(wifi);
 160                 } else
 161                         DBG("carrier off");
 162         }
 163
 164         wifi->flags = flags;
 165 }
 166
 167 static int wifi_probe(struct connman_device *device)
 168 {
 169         struct wifi_data *wifi;
 170
 171         DBG("device %p", device);
 172
 173         wifi = g_try_new0(struct wifi_data, 1);
 174         if (wifi == NULL)
 175                 return -ENOMEM;
 176
 177         wifi->connected = FALSE;
 178         wifi->disconnecting = FALSE;
 179         wifi->tethering = FALSE;
 180         wifi->bridged = FALSE;
 181         wifi->bridge = NULL;
 182         wifi->state = G_SUPPLICANT_STATE_INACTIVE;
 183
 184         connman_device_set_data(device, wifi);
 185         wifi->device = connman_device_ref(device);
 186
 187         wifi->index = connman_device_get_index(device);
 188         wifi->flags = 0;
 189
 190         wifi->watch = connman_rtnl_add_newlink_watch(wifi->index,
 191                                                         wifi_newlink, device);
 192
 193         iface_list = g_list_append(iface_list, wifi);
 194
 195         return 0;
 196 }
 197
 198 static void remove_networks(struct connman_device *device,
 199                                 struct wifi_data *wifi)
 200 {
 201         GSList *list;
 202
 203         for (list = wifi->networks; list != NULL; list = list->next) {
 204                 struct connman_network *network = list->data;
 205
 206                 connman_device_remove_network(device, network);
 207                 connman_network_unref(network);
 208         }
 209
 210         g_slist_free(wifi->networks);
 211         wifi->networks = NULL;
 212 }
 213
 214 static void reset_autoscan(struct connman_device *device)
 215 {
 216         struct wifi_data *wifi = connman_device_get_data(device);
 217         struct autoscan_params *autoscan;
 218
 219         DBG("");
 220
 221         if (wifi == NULL || wifi->autoscan == NULL)
 222                 return;
 223
 224         autoscan = wifi->autoscan;
 225
 226         if (autoscan->timeout == 0 && autoscan->interval == 0)
 227                 return;
 228
 229         g_source_remove(autoscan->timeout);
 230
 231         autoscan->timeout = 0;
 232         autoscan->interval = 0;
 233
 234         connman_device_unref(device);
 235 }
 236
 237 static void stop_autoscan(struct connman_device *device)
 238 {
 239         reset_autoscan(device);
 240
 241         connman_device_set_scanning(device, FALSE);
 242 }
 243
 244 static void wifi_remove(struct connman_device *device)
 245 {
 246         struct wifi_data *wifi = connman_device_get_data(device);
 247
 248         DBG("device %p wifi %p", device, wifi);
 249
 250         if (wifi == NULL)
 251                 return;
 252
 253         iface_list = g_list_remove(iface_list, wifi);
 254
 255         remove_networks(device, wifi);
 256
 257         connman_device_set_powered(device, FALSE);
 258         connman_device_set_data(device, NULL);
 259         connman_device_unref(wifi->device);
 260         connman_rtnl_remove_watch(wifi->watch);
 261
 262         g_supplicant_interface_set_data(wifi->interface, NULL);
 263
 264         g_free(wifi->autoscan);
 265         g_free(wifi->identifier);
 266         g_free(wifi);
 267 }
 268
 269 static gboolean is_duplicate(GSList *list, gchar *ssid, int ssid_len)
 270 {
 271         GSList *iter;
 272
 273         for (iter = list; iter != NULL; iter = g_slist_next(iter)) {
 274                 struct scan_ssid *scan_ssid = iter->data;
 275
 276                 if (ssid_len == scan_ssid->ssid_len &&
 277                                 memcmp(ssid, scan_ssid->ssid, ssid_len) == 0)
 278                         return TRUE;
 279         }
 280
 281         return FALSE;
 282 }
 283
 284 static int add_scan_param(gchar *hex_ssid, char *raw_ssid, int ssid_len,
 285                         int freq, GSupplicantScanParams *scan_data,
 286                         int driver_max_scan_ssids, char *ssid_name)
 287 {
 288         unsigned int i;
 289         struct scan_ssid *scan_ssid;
 290
 291         if (driver_max_scan_ssids > scan_data->num_ssids &&
 292                         (hex_ssid != NULL || raw_ssid != NULL)) {
 293                 gchar *ssid;
 294                 unsigned int j = 0, hex;
 295
 296                 if (hex_ssid != NULL) {
 297                         size_t hex_ssid_len = strlen(hex_ssid);
 298
 299                         ssid = g_try_malloc0(hex_ssid_len / 2);
 300                         if (ssid == NULL)
 301                                 return -ENOMEM;
 302
 303                         for (i = 0; i < hex_ssid_len; i += 2) {
 304                                 sscanf(hex_ssid + i, "%02x", &hex);
 305                                 ssid[j++] = hex;
 306                         }
 307                 } else {
 308                         ssid = raw_ssid;
 309                         j = ssid_len;
 310                 }
 311
 312                 /*
 313                  * If we have already added hidden AP to the list,
 314                  * then do not do it again. This might happen if you have
 315                  * used or are using multiple wifi cards, so in that case
 316                  * you might have multiple service files for same AP.
 317                  */
 318                 if (is_duplicate(scan_data->ssids, ssid, j) == TRUE)
 319                         return 0;
 320
 321                 scan_ssid = g_try_new(struct scan_ssid, 1);
 322                 if (scan_ssid == NULL) {
 323                         g_free(ssid);
 324                         return -ENOMEM;
 325                 }
 326
 327                 memcpy(scan_ssid->ssid, ssid, j);
 328                 scan_ssid->ssid_len = j;
 329                 scan_data->ssids = g_slist_prepend(scan_data->ssids,
 330                                                                 scan_ssid);
 331
 332                 scan_data->num_ssids++;
 333
 334                 DBG("SSID %s added to scanned list of %d entries", ssid_name,
 335                                                         scan_data->num_ssids);
 336
 337                 if (hex_ssid != NULL)
 338                         g_free(ssid);
 339         } else
 340                 return -EINVAL;
 341
 342         scan_data->ssids = g_slist_reverse(scan_data->ssids);
 343
 344         if (scan_data->freqs == NULL) {
 345                 scan_data->freqs = g_try_malloc0(sizeof(uint16_t) *
 346                                                 scan_data->num_ssids);
 347                 if (scan_data->freqs == NULL) {
 348                         g_slist_free_full(scan_data->ssids, g_free);
 349                         return -ENOMEM;
 350                 }
 351         } else {
 352                 scan_data->freqs = g_try_realloc(scan_data->freqs,
 353                                 sizeof(uint16_t) * scan_data->num_ssids);
 354                 if (scan_data->freqs == NULL) {
 355                         g_slist_free_full(scan_data->ssids, g_free);
 356                         return -ENOMEM;
 357                 }
 358                 scan_data->freqs[scan_data->num_ssids - 1] = 0;
 359         }
 360
 361         /* Don't add duplicate entries */
 362         for (i = 0; i < scan_data->num_ssids; i++) {
 363                 if (scan_data->freqs[i] == 0) {
 364                         scan_data->freqs[i] = freq;
 365                         break;
 366                 } else if (scan_data->freqs[i] == freq)
 367                         break;
 368         }
 369
 370         return 1;
 371 }
 372
 373 static int get_hidden_connections(int max_ssids,
 374                                 GSupplicantScanParams *scan_data)
 375 {
 376         struct connman_config_entry **entries;
 377         GKeyFile *keyfile;
 378         gchar **services;
 379         char *ssid, *name;
 380         int i, freq, ret;
 381         gboolean value;
 382         int num_ssids = 0, add_param_failed = 0;
 383
 384         services = connman_storage_get_services();
 385         for (i = 0; services && services[i]; i++) {
 386                 if (strncmp(services[i], "wifi_", 5) != 0)
 387                         continue;
 388
 389                 keyfile = connman_storage_load_service(services[i]);
 390
 391                 value = g_key_file_get_boolean(keyfile,
 392                                         services[i], "Hidden", NULL);
 393                 if (value == FALSE) {
 394                         g_key_file_free(keyfile);
 395                         continue;
 396                 }
 397
 398                 value = g_key_file_get_boolean(keyfile,
 399                                         services[i], "Favorite", NULL);
 400                 if (value == FALSE) {
 401                         g_key_file_free(keyfile);
 402                         continue;
 403                 }
 404
 405                 ssid = g_key_file_get_string(keyfile,
 406                                         services[i], "SSID", NULL);
 407
 408                 freq = g_key_file_get_integer(keyfile, services[i],
 409                                         "Frequency", NULL);
 410
 411                 name = g_key_file_get_string(keyfile, services[i], "Name",
 412                                                                 NULL);
 413
 414                 ret = add_scan_param(ssid, NULL, 0, freq, scan_data,
 415                                 max_ssids, name);
 416                 if (ret < 0)
 417                         add_param_failed++;
 418                 else if (ret > 0)
 419                         num_ssids++;
 420
 421                 g_free(name);
 422                 g_key_file_free(keyfile);
 423         }
 424
 425         /*
 426          * Check if there are any hidden AP that needs to be provisioned.
 427          */
 428         entries = connman_config_get_entries();
 429         for (i = 0; entries && entries[i]; i++) {
 430                 int len;
 431
 432                 if (entries[i]->hidden == FALSE)
 433                         continue;
 434
 435                 if (entries[i]->ssid == NULL) {
 436                         ssid = entries[i]->name;
 437                         len = strlen(ssid);
 438                 } else {
 439                         ssid = entries[i]->ssid;
 440                         len = entries[i]->ssid_len;
 441                 }
 442
 443                 if (ssid == NULL)
 444                         continue;
 445
 446                 ret = add_scan_param(NULL, ssid, len, 0, scan_data,
 447                                                         max_ssids, ssid);
 448                 if (ret < 0)
 449                         add_param_failed++;
 450                 else if (ret > 0)
 451                         num_ssids++;
 452         }
 453
 454         connman_config_free_entries(entries);
 455
 456         if (add_param_failed > 0)
 457                 DBG("Unable to scan %d out of %d SSIDs (max is %d)",
 458                         add_param_failed, num_ssids, max_ssids);
 459
 460         g_strfreev(services);
 461
 462         return num_ssids > max_ssids ? max_ssids : num_ssids;
 463 }
 464
 465 static int throw_wifi_scan(struct connman_device *device,
 466                         GSupplicantInterfaceCallback callback)
 467 {
 468         struct wifi_data *wifi = connman_device_get_data(device);
 469         int ret;
 470
 471         if (wifi == NULL)
 472                 return -ENODEV;
 473
 474         DBG("device %p %p", device, wifi->interface);
 475
 476         if (wifi->tethering == TRUE)
 477                 return -EBUSY;
 478
 479         if (connman_device_get_scanning(device) == TRUE)
 480                 return -EALREADY;
 481
 482         connman_device_ref(device);
 483
 484         ret = g_supplicant_interface_scan(wifi->interface, NULL,
 485                                                 callback, device);
 486         if (ret == 0)
 487                 connman_device_set_scanning(device, TRUE);
 488         else
 489                 connman_device_unref(device);
 490
 491         return ret;
 492 }
 493
 494 static void hidden_free(struct hidden_params *hidden)
 495 {
 496         if (hidden == NULL)
 497                 return;
 498
 499         g_free(hidden->identity);
 500         g_free(hidden->passphrase);
 501         g_free(hidden);
 502 }
 503
 504 static void scan_callback(int result, GSupplicantInterface *interface,
 505                                                 void *user_data)
 506 {
 507         struct connman_device *device = user_data;
 508         struct wifi_data *wifi = connman_device_get_data(device);
 509
 510         DBG("result %d wifi %p", result, wifi);
 511
 512         if (wifi != NULL && wifi->hidden != NULL) {
 513                 connman_network_clear_hidden(wifi->hidden->user_data);
 514                 hidden_free(wifi->hidden);
 515                 wifi->hidden = NULL;
 516         }
 517
 518         if (result < 0)
 519                 connman_device_reset_scanning(device);
 520
 521         connman_device_set_scanning(device, FALSE);
 522         start_autoscan(device);
 523         connman_device_unref(device);
 524 }
 525
 526 static void scan_callback_hidden(int result,
 527                         GSupplicantInterface *interface, void *user_data)
 528 {
 529         struct connman_device *device = user_data;
 530         struct wifi_data *wifi = connman_device_get_data(device);
 531         int driver_max_ssids;
 532
 533         DBG("result %d wifi %p", result, wifi);
 534
 535         if (wifi == NULL)
 536                 goto out;
 537
 538         /*
 539          * Scan hidden networks so that we can autoconnect to them.
 540          */
 541         driver_max_ssids = g_supplicant_interface_get_max_scan_ssids(
 542                                                         wifi->interface);
 543         DBG("max ssids %d", driver_max_ssids);
 544
 545         if (driver_max_ssids > 0) {
 546                 GSupplicantScanParams *scan_params;
 547                 int ret;
 548
 549                 scan_params = g_try_malloc0(sizeof(GSupplicantScanParams));
 550                 if (scan_params == NULL)
 551                         goto out;
 552
 553                 if (get_hidden_connections(driver_max_ssids,
 554                                                 scan_params) > 0) {
 555                         ret = g_supplicant_interface_scan(wifi->interface,
 556                                                         scan_params,
 557                                                         scan_callback,
 558                                                         device);
 559                         if (ret == 0)
 560                                 return;
 561                 }
 562
 563                 g_supplicant_free_scan_params(scan_params);
 564         }
 565
 566 out:
 567         scan_callback(result, interface, user_data);
 568 }
 569
 570 static gboolean autoscan_timeout(gpointer data)
 571 {
 572         struct connman_device *device = data;
 573         struct wifi_data *wifi = connman_device_get_data(device);
 574         struct autoscan_params *autoscan;
 575         int interval;
 576
 577         if (wifi == NULL)
 578                 return FALSE;
 579
 580         autoscan = wifi->autoscan;
 581
 582         if (autoscan->interval <= 0) {
 583                 interval = autoscan->base;
 584                 goto set_interval;
 585         } else
 586                 interval = autoscan->interval * autoscan->base;
 587
 588         if (autoscan->interval >= autoscan->limit)
 589                 interval = autoscan->limit;
 590
 591         throw_wifi_scan(wifi->device, scan_callback_hidden);
 592
 593 set_interval:
 594         DBG("interval %d", interval);
 595
 596         autoscan->interval = interval;
 597
 598         autoscan->timeout = g_timeout_add_seconds(interval,
 599                                                 autoscan_timeout, device);
 600
 601         return FALSE;
 602 }
 603
 604 static void start_autoscan(struct connman_device *device)
 605 {
 606         struct wifi_data *wifi = connman_device_get_data(device);
 607         struct autoscan_params *autoscan;
 608
 609         DBG("");
 610
 611         if (wifi == NULL)
 612                 return;
 613
 614         autoscan = wifi->autoscan;
 615         if (autoscan == NULL)
 616                 return;
 617
 618         if (autoscan->timeout > 0 || autoscan->interval > 0)
 619                 return;
 620
 621         connman_device_ref(device);
 622
 623         autoscan_timeout(device);
 624 }
 625
 626 static struct autoscan_params *parse_autoscan_params(const char *params)
 627 {
 628         struct autoscan_params *autoscan;
 629         char **list_params;
 630         int limit;
 631         int base;
 632
 633         DBG("Emulating autoscan");
 634
 635         list_params = g_strsplit(params, ":", 0);
 636         if (list_params == 0)
 637                 return NULL;
 638
 639         if (g_strv_length(list_params) < 3) {
 640                 g_strfreev(list_params);
 641                 return NULL;
 642         }
 643
 644         base = atoi(list_params[1]);
 645         limit = atoi(list_params[2]);
 646
 647         g_strfreev(list_params);
 648
 649         autoscan = g_try_malloc0(sizeof(struct autoscan_params));
 650         if (autoscan == NULL) {
 651                 DBG("Could not allocate memory for autoscan");
 652                 return NULL;
 653         }
 654
 655         DBG("base %d - limit %d", base, limit);
 656         autoscan->base = base;
 657         autoscan->limit = limit;
 658
 659         return autoscan;
 660 }
 661
 662 static void setup_autoscan(struct wifi_data *wifi)
 663 {
 664         if (wifi->autoscan == NULL)
 665                 wifi->autoscan = parse_autoscan_params(AUTOSCAN_DEFAULT);
 666
 667         start_autoscan(wifi->device);
 668 }
 669
 670 static void interface_autoscan_callback(int result,
 671                                         GSupplicantInterface *interface,
 672                                                         void *user_data)
 673 {
 674         struct wifi_data *wifi = user_data;
 675
 676         if (result < 0) {
 677                 DBG("Could not enable Autoscan, falling back...");
 678                 setup_autoscan(wifi);
 679         }
 680 }
 681
 682 static void interface_create_callback(int result,
 683                                         GSupplicantInterface *interface,
 684                                                         void *user_data)
 685 {
 686         struct wifi_data *wifi = user_data;
 687
 688         DBG("result %d ifname %s, wifi %p", result,
 689                                 g_supplicant_interface_get_ifname(interface),
 690                                 wifi);
 691
 692         if (result < 0 || wifi == NULL)
 693                 return;
 694
 695         wifi->interface = interface;
 696         g_supplicant_interface_set_data(interface, wifi);
 697
 698         if (g_supplicant_interface_get_ready(interface) == FALSE)
 699                 return;
 700
 701         DBG("interface is ready wifi %p tethering %d", wifi, wifi->tethering);
 702
 703         if (wifi->device == NULL) {
 704                 connman_error("WiFi device not set");
 705                 return;
 706         }
 707
 708         connman_device_set_powered(wifi->device, TRUE);
 709
 710         if (connman_setting_get_bool("BackgroundScanning") == FALSE)
 711                 return;
 712
 713         /* Setting up automatic scanning */
 714         if (g_supplicant_interface_autoscan(interface, AUTOSCAN_DEFAULT,
 715                                 interface_autoscan_callback, wifi) < 0) {
 716                 DBG("Could not enable Autoscan, falling back...");
 717                 setup_autoscan(wifi);
 718         }
 719 }
 720
 721 static int wifi_enable(struct connman_device *device)
 722 {
 723         struct wifi_data *wifi = connman_device_get_data(device);
 724         const char *interface = connman_device_get_string(device, "Interface");
 725         const char *driver = connman_option_get_string("wifi");
 726         int ret;
 727
 728         DBG("device %p %p", device, wifi);
 729
 730         if (wifi == NULL)
 731                 return -ENODEV;
 732
 733         ret = g_supplicant_interface_create(interface, driver, NULL,
 734                                                 interface_create_callback,
 735                                                         wifi);
 736         if (ret < 0)
 737                 return ret;
 738
 739         return -EINPROGRESS;
 740 }
 741
 742 static int wifi_disable(struct connman_device *device)
 743 {
 744         struct wifi_data *wifi = connman_device_get_data(device);
 745         int ret;
 746
 747         DBG("device %p wifi %p", device, wifi);
 748
 749         if (wifi == NULL)
 750                 return -ENODEV;
 751
 752         wifi->connected = FALSE;
 753         wifi->disconnecting = FALSE;
 754
 755         if (wifi->pending_network != NULL)
 756                 wifi->pending_network = NULL;
 757
 758         stop_autoscan(device);
 759
 760         /* In case of a user scan, device is still referenced */
 761         if (connman_device_get_scanning(device) == TRUE) {
 762                 connman_device_set_scanning(device, FALSE);
 763                 connman_device_unref(wifi->device);
 764         }
 765
 766         remove_networks(device, wifi);
 767
 768         ret = g_supplicant_interface_remove(wifi->interface, NULL, NULL);
 769         if (ret < 0)
 770                 return ret;
 771
 772         return -EINPROGRESS;
 773 }
 774
 775 struct last_connected {
 776         GTimeVal modified;
 777         gchar *ssid;
 778         int freq;
 779 };
 780
 781 static gint sort_entry(gconstpointer a, gconstpointer b, gpointer user_data)
 782 {
 783         GTimeVal *aval = (GTimeVal *)a;
 784         GTimeVal *bval = (GTimeVal *)b;
 785
 786         /* Note that the sort order is descending */
 787         if (aval->tv_sec < bval->tv_sec)
 788                 return 1;
 789
 790         if (aval->tv_sec > bval->tv_sec)
 791                 return -1;
 792
 793         return 0;
 794 }
 795
 796 static void free_entry(gpointer data)
 797 {
 798         struct last_connected *entry = data;
 799
 800         g_free(entry->ssid);
 801         g_free(entry);
 802 }
 803
 804 static int get_latest_connections(int max_ssids,
 805                                 GSupplicantScanParams *scan_data)
 806 {
 807         GSequenceIter *iter;
 808         GSequence *latest_list;
 809         struct last_connected *entry;
 810         GKeyFile *keyfile;
 811         GTimeVal modified;
 812         gchar **services;
 813         gchar *str;
 814         char *ssid;
 815         int i, freq;
 816         int num_ssids = 0;
 817
 818         latest_list = g_sequence_new(free_entry);
 819         if (latest_list == NULL)
 820                 return -ENOMEM;
 821
 822         services = connman_storage_get_services();
 823         for (i = 0; services && services[i]; i++) {
 824                 if (strncmp(services[i], "wifi_", 5) != 0)
 825                         continue;
 826
 827                 keyfile = connman_storage_load_service(services[i]);
 828
 829                 str = g_key_file_get_string(keyfile,
 830                                         services[i], "Favorite", NULL);
 831                 if (str == NULL || g_strcmp0(str, "true")) {
 832                         if (str)
 833                                 g_free(str);
 834                         g_key_file_free(keyfile);
 835                         continue;
 836                 }
 837                 g_free(str);
 838
 839                 str = g_key_file_get_string(keyfile,
 840                                         services[i], "AutoConnect", NULL);
 841                 if (str == NULL || g_strcmp0(str, "true")) {
 842                         if (str)
 843                                 g_free(str);
 844                         g_key_file_free(keyfile);
 845                         continue;
 846                 }
 847                 g_free(str);
 848
 849                 str = g_key_file_get_string(keyfile,
 850                                         services[i], "Modified", NULL);
 851                 if (str != NULL) {
 852                         g_time_val_from_iso8601(str, &modified);
 853                         g_free(str);
 854                 }
 855
 856                 ssid = g_key_file_get_string(keyfile,
 857                                         services[i], "SSID", NULL);
 858
 859                 freq = g_key_file_get_integer(keyfile, services[i],
 860                                         "Frequency", NULL);
 861                 if (freq) {
 862                         entry = g_try_new(struct last_connected, 1);
 863                         if (entry == NULL) {
 864                                 g_sequence_free(latest_list);
 865                                 g_key_file_free(keyfile);
 866                                 g_free(ssid);
 867                                 return -ENOMEM;
 868                         }
 869
 870                         entry->ssid = ssid;
 871                         entry->modified = modified;
 872                         entry->freq = freq;
 873
 874                         g_sequence_insert_sorted(latest_list, entry,
 875                                                 sort_entry, NULL);
 876                         num_ssids++;
 877                 } else
 878                         g_free(ssid);
 879
 880                 g_key_file_free(keyfile);
 881         }
 882
 883         g_strfreev(services);
 884
 885         num_ssids = num_ssids > max_ssids ? max_ssids : num_ssids;
 886
 887         iter = g_sequence_get_begin_iter(latest_list);
 888
 889         for (i = 0; i < num_ssids; i++) {
 890                 entry = g_sequence_get(iter);
 891
 892                 DBG("ssid %s freq %d modified %lu", entry->ssid, entry->freq,
 893                                                 entry->modified.tv_sec);
 894
 895                 add_scan_param(entry->ssid, NULL, 0, entry->freq, scan_data,
 896                                                 max_ssids, entry->ssid);
 897
 898                 iter = g_sequence_iter_next(iter);
 899         }
 900
 901         g_sequence_free(latest_list);
 902         return num_ssids;
 903 }
 904
 905 static int wifi_scan_simple(struct connman_device *device)
 906 {
 907         reset_autoscan(device);
 908
 909         return throw_wifi_scan(device, scan_callback_hidden);
 910 }
 911
 912 /*
 913  * Note that the hidden scan is only used when connecting to this specific
 914  * hidden AP first time. It is not used when system autoconnects to hidden AP.
 915  */
 916 static int wifi_scan(struct connman_device *device,
 917                 const char *ssid, unsigned int ssid_len,
 918                 const char *identity, const char* passphrase,
 919                 gpointer user_data)
 920 {
 921         struct wifi_data *wifi = connman_device_get_data(device);
 922         GSupplicantScanParams *scan_params = NULL;
 923         struct scan_ssid *scan_ssid;
 924         struct hidden_params *hidden;
 925         int ret;
 926         int driver_max_ssids = 0;
 927         connman_bool_t do_hidden;
 928
 929         if (wifi == NULL)
 930                 return -ENODEV;
 931
 932         DBG("device %p wifi %p hidden ssid %s", device, wifi->interface, ssid);
 933
 934         if (wifi->tethering == TRUE)
 935                 return 0;
 936
 937         if (connman_device_get_scanning(device) == TRUE)
 938                 return -EALREADY;
 939
 940         if (ssid == NULL || ssid_len == 0 || ssid_len > 32) {
 941                 do_hidden = FALSE;
 942         } else {
 943                 if (wifi->hidden != NULL)
 944                         return -EBUSY;
 945
 946                 do_hidden = TRUE;
 947         }
 948
 949         if (do_hidden == FALSE) {
 950                 driver_max_ssids = g_supplicant_interface_get_max_scan_ssids(
 951                                                         wifi->interface);
 952                 DBG("max ssids %d", driver_max_ssids);
 953                 if (driver_max_ssids == 0)
 954                         return wifi_scan_simple(device);
 955         }
 956
 957         scan_params = g_try_malloc0(sizeof(GSupplicantScanParams));
 958         if (scan_params == NULL)
 959                 return -ENOMEM;
 960
 961         if (do_hidden == TRUE) {
 962                 scan_ssid = g_try_new(struct scan_ssid, 1);
 963                 if (scan_ssid == NULL) {
 964                         g_free(scan_params);
 965                         return -ENOMEM;
 966                 }
 967
 968                 memcpy(scan_ssid->ssid, ssid, ssid_len);
 969                 scan_ssid->ssid_len = ssid_len;
 970                 scan_params->ssids = g_slist_prepend(scan_params->ssids,
 971                                                                 scan_ssid);
 972                 scan_params->num_ssids = 1;
 973
 974                 hidden = g_try_new0(struct hidden_params, 1);
 975                 if (hidden == NULL) {
 976                         g_free(scan_params);
 977                         return -ENOMEM;
 978                 }
 979
 980                 memcpy(hidden->ssid, ssid, ssid_len);
 981                 hidden->ssid_len = ssid_len;
 982                 hidden->identity = g_strdup(identity);
 983                 hidden->passphrase = g_strdup(passphrase);
 984                 hidden->user_data = user_data;
 985                 wifi->hidden = hidden;
 986
 987         } else {
 988                 ret = get_latest_connections(driver_max_ssids, scan_params);
 989                 if (ret <= 0) {
 990                         g_supplicant_free_scan_params(scan_params);
 991                         return wifi_scan_simple(device);
 992                 }
 993         }
 994
 995         connman_device_ref(device);
 996
 997         reset_autoscan(device);
 998
 999         ret = g_supplicant_interface_scan(wifi->interface, scan_params,
1000                                                 scan_callback, device);
1001         if (ret == 0)
1002                 connman_device_set_scanning(device, TRUE);
1003         else {
1004                 g_supplicant_free_scan_params(scan_params);
1005                 connman_device_unref(device);
1006
1007                 if (do_hidden == TRUE) {
1008                         hidden_free(wifi->hidden);
1009                         wifi->hidden = NULL;
1010                 }
1011         }
1012
1013         return ret;
1014 }
1015
1016 static void wifi_regdom_callback(int result,
1017                                         const char *alpha2,
1018                                                 void *user_data)
1019 {
1020         struct connman_device *device = user_data;
1021
1022         connman_device_regdom_notify(device, result, alpha2);
1023
1024         connman_device_unref(device);
1025 }
1026
1027 static int wifi_set_regdom(struct connman_device *device, const char *alpha2)
1028 {
1029         struct wifi_data *wifi = connman_device_get_data(device);
1030         int ret;
1031
1032         if (wifi == NULL)
1033                 return -EINVAL;
1034
1035         connman_device_ref(device);
1036
1037         ret = g_supplicant_interface_set_country(wifi->interface,
1038                                                 wifi_regdom_callback,
1039                                                         alpha2, device);
1040         if (ret != 0)
1041                 connman_device_unref(device);
1042
1043         return ret;
1044 }
1045
1046 static struct connman_device_driver wifi_ng_driver = {
1047         .name           = "wifi",
1048         .type           = CONNMAN_DEVICE_TYPE_WIFI,
1049         .priority       = CONNMAN_DEVICE_PRIORITY_LOW,
1050         .probe          = wifi_probe,
1051         .remove         = wifi_remove,
1052         .enable         = wifi_enable,
1053         .disable        = wifi_disable,
1054         .scan           = wifi_scan,
1055         .set_regdom     = wifi_set_regdom,
1056 };
1057
1058 static void system_ready(void)
1059 {
1060         DBG("");
1061
1062         if (connman_device_driver_register(&wifi_ng_driver) < 0)
1063                 connman_error("Failed to register WiFi driver");
1064 }
1065
1066 static void system_killed(void)
1067 {
1068         DBG("");
1069
1070         connman_device_driver_unregister(&wifi_ng_driver);
1071 }
1072
1073 static int network_probe(struct connman_network *network)
1074 {
1075         DBG("network %p", network);
1076
1077         return 0;
1078 }
1079
1080 static void network_remove(struct connman_network *network)
1081 {
1082         struct connman_device *device = connman_network_get_device(network);
1083         struct wifi_data *wifi;
1084
1085         DBG("network %p", network);
1086
1087         wifi = connman_device_get_data(device);
1088         if (wifi == NULL)
1089                 return;
1090
1091         if (wifi->network != network)
1092                 return;
1093
1094         wifi->network = NULL;
1095 }
1096
1097 static void connect_callback(int result, GSupplicantInterface *interface,
1098                                                         void *user_data)
1099 {
1100         struct connman_network *network = user_data;
1101
1102         DBG("network %p result %d", network, result);
1103
1104         if (result == -ENOKEY) {
1105                 connman_network_set_error(network,
1106                                         CONNMAN_NETWORK_ERROR_INVALID_KEY);
1107         } else if (result < 0) {
1108                 connman_network_set_error(network,
1109                                         CONNMAN_NETWORK_ERROR_CONFIGURE_FAIL);
1110         }
1111 }
1112
1113 static GSupplicantSecurity network_security(const char *security)
1114 {
1115         if (g_str_equal(security, "none") == TRUE)
1116                 return G_SUPPLICANT_SECURITY_NONE;
1117         else if (g_str_equal(security, "wep") == TRUE)
1118                 return G_SUPPLICANT_SECURITY_WEP;
1119         else if (g_str_equal(security, "psk") == TRUE)
1120                 return G_SUPPLICANT_SECURITY_PSK;
1121         else if (g_str_equal(security, "wpa") == TRUE)
1122                 return G_SUPPLICANT_SECURITY_PSK;
1123         else if (g_str_equal(security, "rsn") == TRUE)
1124                 return G_SUPPLICANT_SECURITY_PSK;
1125         else if (g_str_equal(security, "ieee8021x") == TRUE)
1126                 return G_SUPPLICANT_SECURITY_IEEE8021X;
1127
1128         return G_SUPPLICANT_SECURITY_UNKNOWN;
1129 }
1130
1131 static void ssid_init(GSupplicantSSID *ssid, struct connman_network *network)
1132 {
1133         const char *security, *passphrase, *agent_passphrase;
1134
1135         memset(ssid, 0, sizeof(*ssid));
1136         ssid->mode = G_SUPPLICANT_MODE_INFRA;
1137         ssid->ssid = connman_network_get_blob(network, "WiFi.SSID",
1138                                                 &ssid->ssid_len);
1139         ssid->scan_ssid = 1;
1140         security = connman_network_get_string(network, "WiFi.Security");
1141         ssid->security = network_security(security);
1142         passphrase = connman_network_get_string(network,
1143                                                 "WiFi.Passphrase");
1144         if (passphrase == NULL || strlen(passphrase) == 0) {
1145
1146                 /* Use agent provided passphrase as a fallback */
1147                 agent_passphrase = connman_network_get_string(network,
1148                                                 "WiFi.AgentPassphrase");
1149
1150                 if (agent_passphrase == NULL || strlen(agent_passphrase) == 0)
1151                         ssid->passphrase = NULL;
1152                 else
1153                         ssid->passphrase = agent_passphrase;
1154         } else
1155                 ssid->passphrase = passphrase;
1156
1157         ssid->eap = connman_network_get_string(network, "WiFi.EAP");
1158
1159         /*
1160          * If our private key password is unset,
1161          * we use the supplied passphrase. That is needed
1162          * for PEAP where 2 passphrases (identity and client
1163          * cert may have to be provided.
1164          */
1165         if (connman_network_get_string(network,
1166                                         "WiFi.PrivateKeyPassphrase") == NULL)
1167                 connman_network_set_string(network,
1168                                                 "WiFi.PrivateKeyPassphrase",
1169                                                 ssid->passphrase);
1170         /* We must have an identity for both PEAP and TLS */
1171         ssid->identity = connman_network_get_string(network, "WiFi.Identity");
1172
1173         /* Use agent provided identity as a fallback */
1174         if (ssid->identity == NULL || strlen(ssid->identity) == 0)
1175                 ssid->identity = connman_network_get_string(network,
1176                                                         "WiFi.AgentIdentity");
1177
1178         ssid->ca_cert_path = connman_network_get_string(network,
1179                                                         "WiFi.CACertFile");
1180         ssid->client_cert_path = connman_network_get_string(network,
1181                                                         "WiFi.ClientCertFile");
1182         ssid->private_key_path = connman_network_get_string(network,
1183                                                         "WiFi.PrivateKeyFile");
1184         ssid->private_key_passphrase = connman_network_get_string(network,
1185                                                 "WiFi.PrivateKeyPassphrase");
1186         ssid->phase2_auth = connman_network_get_string(network, "WiFi.Phase2");
1187
1188         ssid->use_wps = connman_network_get_bool(network, "WiFi.UseWPS");
1189         ssid->pin_wps = connman_network_get_string(network, "WiFi.PinWPS");
1190
1191         if (connman_setting_get_bool("BackgroundScanning") == TRUE)
1192                 ssid->bgscan = BGSCAN_DEFAULT;
1193 }
1194
1195 static int network_connect(struct connman_network *network)
1196 {
1197         struct connman_device *device = connman_network_get_device(network);
1198         struct wifi_data *wifi;
1199         GSupplicantInterface *interface;
1200         GSupplicantSSID *ssid;
1201
1202         DBG("network %p", network);
1203
1204         if (device == NULL)
1205                 return -ENODEV;
1206
1207         wifi = connman_device_get_data(device);
1208         if (wifi == NULL)
1209                 return -ENODEV;
1210
1211         ssid = g_try_malloc0(sizeof(GSupplicantSSID));
1212         if (ssid == NULL)
1213                 return -ENOMEM;
1214
1215         interface = wifi->interface;
1216
1217         ssid_init(ssid, network);
1218
1219         if (wifi->disconnecting == TRUE)
1220                 wifi->pending_network = network;
1221         else {
1222                 wifi->network = network;
1223                 wifi->retries = 0;
1224
1225                 return g_supplicant_interface_connect(interface, ssid,
1226                                                 connect_callback, network);
1227         }
1228
1229         return -EINPROGRESS;
1230 }
1231
1232 static void disconnect_callback(int result, GSupplicantInterface *interface,
1233                                                                 void *user_data)
1234 {
1235         struct wifi_data *wifi = user_data;
1236
1237         if (wifi->network != NULL) {
1238                 /*
1239                  * if result < 0 supplican return an error because
1240                  * the network is not current.
1241                  * we wont receive G_SUPPLICANT_STATE_DISCONNECTED since it
1242                  * failed, call connman_network_set_connected to report
1243                  * disconnect is completed.
1244                  */
1245                 if (result < 0)
1246                         connman_network_set_connected(wifi->network, FALSE);
1247         }
1248
1249         wifi->network = NULL;
1250
1251         wifi->disconnecting = FALSE;
1252
1253         if (wifi->pending_network != NULL) {
1254                 network_connect(wifi->pending_network);
1255                 wifi->pending_network = NULL;
1256         }
1257
1258         start_autoscan(wifi->device);
1259 }
1260
1261 static int network_disconnect(struct connman_network *network)
1262 {
1263         struct connman_device *device = connman_network_get_device(network);
1264         struct wifi_data *wifi;
1265         int err;
1266
1267         DBG("network %p", network);
1268
1269         wifi = connman_device_get_data(device);
1270         if (wifi == NULL || wifi->interface == NULL)
1271                 return -ENODEV;
1272
1273         connman_network_set_associating(network, FALSE);
1274
1275         if (wifi->disconnecting == TRUE)
1276                 return -EALREADY;
1277
1278         wifi->disconnecting = TRUE;
1279
1280         err = g_supplicant_interface_disconnect(wifi->interface,
1281                                                 disconnect_callback, wifi);
1282         if (err < 0)
1283                 wifi->disconnecting = FALSE;
1284
1285         return err;
1286 }
1287
1288 static struct connman_network_driver network_driver = {
1289         .name           = "wifi",
1290         .type           = CONNMAN_NETWORK_TYPE_WIFI,
1291         .priority       = CONNMAN_NETWORK_PRIORITY_LOW,
1292         .probe          = network_probe,
1293         .remove         = network_remove,
1294         .connect        = network_connect,
1295         .disconnect     = network_disconnect,
1296 };
1297
1298 static void interface_added(GSupplicantInterface *interface)
1299 {
1300         const char *ifname = g_supplicant_interface_get_ifname(interface);
1301         const char *driver = g_supplicant_interface_get_driver(interface);
1302         struct wifi_data *wifi;
1303
1304         wifi = g_supplicant_interface_get_data(interface);
1305
1306         /*
1307          * We can get here with a NULL wifi pointer when
1308          * the interface added signal is sent before the
1309          * interface creation callback is called.
1310          */
1311         if (wifi == NULL)
1312                 return;
1313
1314         DBG("ifname %s driver %s wifi %p tethering %d",
1315                         ifname, driver, wifi, wifi->tethering);
1316
1317         if (wifi->device == NULL) {
1318                 connman_error("WiFi device not set");
1319                 return;
1320         }
1321
1322         connman_device_set_powered(wifi->device, TRUE);
1323
1324         if (wifi->tethering == TRUE)
1325                 return;
1326 }
1327
1328 static connman_bool_t is_idle(struct wifi_data *wifi)
1329 {
1330         DBG("state %d", wifi->state);
1331
1332         switch (wifi->state) {
1333         case G_SUPPLICANT_STATE_UNKNOWN:
1334         case G_SUPPLICANT_STATE_DISCONNECTED:
1335         case G_SUPPLICANT_STATE_INACTIVE:
1336         case G_SUPPLICANT_STATE_SCANNING:
1337                 return TRUE;
1338
1339         case G_SUPPLICANT_STATE_AUTHENTICATING:
1340         case G_SUPPLICANT_STATE_ASSOCIATING:
1341         case G_SUPPLICANT_STATE_ASSOCIATED:
1342         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
1343         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
1344         case G_SUPPLICANT_STATE_COMPLETED:
1345                 return FALSE;
1346         }
1347
1348         return FALSE;
1349 }
1350
1351 static connman_bool_t is_idle_wps(GSupplicantInterface *interface,
1352                                                 struct wifi_data *wifi)
1353 {
1354         /* First, let's check if WPS processing did not went wrong */
1355         if (g_supplicant_interface_get_wps_state(interface) ==
1356                 G_SUPPLICANT_WPS_STATE_FAIL)
1357                 return FALSE;
1358
1359         /* Unlike normal connection, being associated while processing wps
1360          * actually means that we are idling. */
1361         switch (wifi->state) {
1362         case G_SUPPLICANT_STATE_UNKNOWN:
1363         case G_SUPPLICANT_STATE_DISCONNECTED:
1364         case G_SUPPLICANT_STATE_INACTIVE:
1365         case G_SUPPLICANT_STATE_SCANNING:
1366         case G_SUPPLICANT_STATE_ASSOCIATED:
1367                 return TRUE;
1368         case G_SUPPLICANT_STATE_AUTHENTICATING:
1369         case G_SUPPLICANT_STATE_ASSOCIATING:
1370         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
1371         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
1372         case G_SUPPLICANT_STATE_COMPLETED:
1373                 return FALSE;
1374         }
1375
1376         return FALSE;
1377 }
1378
1379 static connman_bool_t handle_wps_completion(GSupplicantInterface *interface,
1380                                         struct connman_network *network,
1381                                         struct connman_device *device,
1382                                         struct wifi_data *wifi)
1383 {
1384         connman_bool_t wps;
1385
1386         wps = connman_network_get_bool(network, "WiFi.UseWPS");
1387         if (wps == TRUE) {
1388                 const unsigned char *ssid, *wps_ssid;
1389                 unsigned int ssid_len, wps_ssid_len;
1390                 const char *wps_key;
1391
1392                 /* Checking if we got associated with requested
1393                  * network */
1394                 ssid = connman_network_get_blob(network, "WiFi.SSID",
1395                                                 &ssid_len);
1396
1397                 wps_ssid = g_supplicant_interface_get_wps_ssid(
1398                         interface, &wps_ssid_len);
1399
1400                 if (wps_ssid == NULL || wps_ssid_len != ssid_len ||
1401                                 memcmp(ssid, wps_ssid, ssid_len) != 0) {
1402                         connman_network_set_associating(network, FALSE);
1403                         g_supplicant_interface_disconnect(wifi->interface,
1404                                                 disconnect_callback, wifi);
1405                         return FALSE;
1406                 }
1407
1408                 wps_key = g_supplicant_interface_get_wps_key(interface);
1409                 connman_network_set_string(network, "WiFi.Passphrase",
1410                                         wps_key);
1411
1412                 connman_network_set_string(network, "WiFi.PinWPS", NULL);
1413         }
1414
1415         return TRUE;
1416 }
1417
1418 static connman_bool_t handle_4way_handshake_failure(GSupplicantInterface *interface,
1419                                         struct connman_network *network,
1420                                         struct wifi_data *wifi)
1421 {
1422         struct connman_service *service;
1423
1424         if (wifi->state != G_SUPPLICANT_STATE_4WAY_HANDSHAKE)
1425                 return FALSE;
1426
1427         service = connman_service_lookup_from_network(network);
1428         if (service == NULL)
1429                 return FALSE;
1430
1431         wifi->retries++;
1432
1433         if (connman_service_get_favorite(service) == TRUE) {
1434                 if (wifi->retries < FAVORITE_MAXIMUM_RETRIES)
1435                         return TRUE;
1436         } else if (wifi->retries < MAXIMUM_RETRIES)
1437                 return TRUE;
1438
1439         connman_network_set_error(network, CONNMAN_NETWORK_ERROR_INVALID_KEY);
1440
1441         return FALSE;
1442 }
1443
1444 static void interface_state(GSupplicantInterface *interface)
1445 {
1446         struct connman_network *network;
1447         struct connman_device *device;
1448         struct wifi_data *wifi;
1449         GSupplicantState state = g_supplicant_interface_get_state(interface);
1450         connman_bool_t wps;
1451
1452         wifi = g_supplicant_interface_get_data(interface);
1453
1454         DBG("wifi %p interface state %d", wifi, state);
1455
1456         if (wifi == NULL)
1457                 return;
1458
1459         network = wifi->network;
1460         device = wifi->device;
1461
1462         if (device == NULL || network == NULL)
1463                 return;
1464
1465         switch (state) {
1466         case G_SUPPLICANT_STATE_SCANNING:
1467                 break;
1468
1469         case G_SUPPLICANT_STATE_AUTHENTICATING:
1470         case G_SUPPLICANT_STATE_ASSOCIATING:
1471                 stop_autoscan(device);
1472
1473                 if (wifi->connected == FALSE)
1474                         connman_network_set_associating(network, TRUE);
1475
1476                 break;
1477
1478         case G_SUPPLICANT_STATE_COMPLETED:
1479                 /* though it should be already stopped: */
1480                 stop_autoscan(device);
1481
1482                 if (handle_wps_completion(interface, network, device, wifi) ==
1483                                                                         FALSE)
1484                         break;
1485
1486                 connman_network_set_connected(network, TRUE);
1487                 break;
1488
1489         case G_SUPPLICANT_STATE_DISCONNECTED:
1490                 /*
1491                  * If we're in one of the idle modes, we have
1492                  * not started association yet and thus setting
1493                  * those ones to FALSE could cancel an association
1494                  * in progress.
1495                  */
1496                 wps = connman_network_get_bool(network, "WiFi.UseWPS");
1497                 if (wps == TRUE)
1498                         if (is_idle_wps(interface, wifi) == TRUE)
1499                                 break;
1500
1501                 if (is_idle(wifi))
1502                         break;
1503
1504                 /* If previous state was 4way-handshake, then
1505                  * it's either: psk was incorrect and thus we retry
1506                  * or if we reach the maximum retries we declare the
1507                  * psk as wrong */
1508                 if (handle_4way_handshake_failure(interface,
1509                                                 network, wifi) == TRUE)
1510                         break;
1511
1512                 /* We disable the selected network, if not then
1513                  * wpa_supplicant will loop retrying */
1514                 if (g_supplicant_interface_enable_selected_network(interface,
1515                                                 FALSE) != 0)
1516                         DBG("Could not disables selected network");
1517
1518                 connman_network_set_connected(network, FALSE);
1519                 connman_network_set_associating(network, FALSE);
1520                 wifi->disconnecting = FALSE;
1521
1522                 start_autoscan(device);
1523
1524                 break;
1525
1526         case G_SUPPLICANT_STATE_INACTIVE:
1527                 connman_network_set_associating(network, FALSE);
1528                 start_autoscan(device);
1529
1530                 break;
1531
1532         case G_SUPPLICANT_STATE_UNKNOWN:
1533         case G_SUPPLICANT_STATE_ASSOCIATED:
1534         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
1535         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
1536                 break;
1537         }
1538
1539         wifi->state = state;
1540
1541         /* Saving wpa_s state policy:
1542          * If connected and if the state changes are roaming related:
1543          * --> We stay connected
1544          * If completed
1545          * --> We are connected
1546          * All other case:
1547          * --> We are not connected
1548          * */
1549         switch (state) {
1550         case G_SUPPLICANT_STATE_AUTHENTICATING:
1551         case G_SUPPLICANT_STATE_ASSOCIATING:
1552         case G_SUPPLICANT_STATE_ASSOCIATED:
1553         case G_SUPPLICANT_STATE_4WAY_HANDSHAKE:
1554         case G_SUPPLICANT_STATE_GROUP_HANDSHAKE:
1555                 if (wifi->connected == TRUE)
1556                         connman_warn("Probably roaming right now!"
1557                                                 " Staying connected...");
1558                 else
1559                         wifi->connected = FALSE;
1560                 break;
1561         case G_SUPPLICANT_STATE_COMPLETED:
1562                 wifi->connected = TRUE;
1563                 break;
1564         default:
1565                 wifi->connected = FALSE;
1566                 break;
1567         }
1568
1569         DBG("DONE");
1570 }
1571
1572 static void interface_removed(GSupplicantInterface *interface)
1573 {
1574         const char *ifname = g_supplicant_interface_get_ifname(interface);
1575         struct wifi_data *wifi;
1576
1577         DBG("ifname %s", ifname);
1578
1579         wifi = g_supplicant_interface_get_data(interface);
1580
1581         if (wifi != NULL && wifi->tethering == TRUE)
1582                 return;
1583
1584         if (wifi == NULL || wifi->device == NULL) {
1585                 DBG("wifi interface already removed");
1586                 return;
1587         }
1588
1589         wifi->interface = NULL;
1590         connman_device_set_powered(wifi->device, FALSE);
1591 }
1592
1593 static void scan_started(GSupplicantInterface *interface)
1594 {
1595         DBG("");
1596 }
1597
1598 static void scan_finished(GSupplicantInterface *interface)
1599 {
1600         DBG("");
1601 }
1602
1603 static unsigned char calculate_strength(GSupplicantNetwork *supplicant_network)
1604 {
1605         unsigned char strength;
1606
1607         strength = 120 + g_supplicant_network_get_signal(supplicant_network);
1608         if (strength > 100)
1609                 strength = 100;
1610
1611         return strength;
1612 }
1613
1614 static void network_added(GSupplicantNetwork *supplicant_network)
1615 {
1616         struct connman_network *network;
1617         GSupplicantInterface *interface;
1618         struct wifi_data *wifi;
1619         const char *name, *identifier, *security, *group, *mode;
1620         const unsigned char *ssid;
1621         unsigned int ssid_len;
1622         connman_bool_t wps;
1623         connman_bool_t wps_pbc;
1624         connman_bool_t wps_ready;
1625         connman_bool_t wps_advertizing;
1626
1627         DBG("");
1628
1629         interface = g_supplicant_network_get_interface(supplicant_network);
1630         wifi = g_supplicant_interface_get_data(interface);
1631         name = g_supplicant_network_get_name(supplicant_network);
1632         identifier = g_supplicant_network_get_identifier(supplicant_network);
1633         security = g_supplicant_network_get_security(supplicant_network);
1634         group = g_supplicant_network_get_identifier(supplicant_network);
1635         wps = g_supplicant_network_get_wps(supplicant_network);
1636         wps_pbc = g_supplicant_network_is_wps_pbc(supplicant_network);
1637         wps_ready = g_supplicant_network_is_wps_active(supplicant_network);
1638         wps_advertizing = g_supplicant_network_is_wps_advertizing(
1639                                                         supplicant_network);
1640         mode = g_supplicant_network_get_mode(supplicant_network);
1641
1642         if (wifi == NULL)
1643                 return;
1644
1645         ssid = g_supplicant_network_get_ssid(supplicant_network, &ssid_len);
1646
1647         network = connman_device_get_network(wifi->device, identifier);
1648
1649         if (network == NULL) {
1650                 network = connman_network_create(identifier,
1651                                                 CONNMAN_NETWORK_TYPE_WIFI);
1652                 if (network == NULL)
1653                         return;
1654
1655                 connman_network_set_index(network, wifi->index);
1656
1657                 if (connman_device_add_network(wifi->device, network) < 0) {
1658                         connman_network_unref(network);
1659                         return;
1660                 }
1661
1662                 wifi->networks = g_slist_append(wifi->networks, network);
1663         }
1664
1665         if (name != NULL && name[0] != '\0')
1666                 connman_network_set_name(network, name);
1667
1668         connman_network_set_blob(network, "WiFi.SSID",
1669                                                 ssid, ssid_len);
1670         connman_network_set_string(network, "WiFi.Security", security);
1671         connman_network_set_strength(network,
1672                                 calculate_strength(supplicant_network));
1673         connman_network_set_bool(network, "WiFi.WPS", wps);
1674
1675         if (wps == TRUE) {
1676                 /* Is AP advertizing for WPS association?
1677                  * If so, we decide to use WPS by default */
1678                 if (wps_ready == TRUE && wps_pbc == TRUE &&
1679                                                 wps_advertizing == TRUE)
1680                         connman_network_set_bool(network, "WiFi.UseWPS", TRUE);
1681         }
1682
1683         connman_network_set_frequency(network,
1684                         g_supplicant_network_get_frequency(supplicant_network));
1685
1686         connman_network_set_available(network, TRUE);
1687         connman_network_set_string(network, "WiFi.Mode", mode);
1688
1689         if (ssid != NULL)
1690                 connman_network_set_group(network, group);
1691
1692         if (wifi->hidden != NULL && ssid != NULL) {
1693                 if (wifi->hidden->ssid_len == ssid_len &&
1694                                 memcmp(wifi->hidden->ssid, ssid,
1695                                                 ssid_len) == 0) {
1696                         connman_network_connect_hidden(network,
1697                                         wifi->hidden->identity,
1698                                         wifi->hidden->passphrase,
1699                                         wifi->hidden->user_data);
1700                         wifi->hidden->user_data = NULL;
1701                         hidden_free(wifi->hidden);
1702                         wifi->hidden = NULL;
1703                 }
1704         }
1705 }
1706
1707 static void network_removed(GSupplicantNetwork *network)
1708 {
1709         GSupplicantInterface *interface;
1710         struct wifi_data *wifi;
1711         const char *name, *identifier;
1712         struct connman_network *connman_network;
1713
1714         interface = g_supplicant_network_get_interface(network);
1715         wifi = g_supplicant_interface_get_data(interface);
1716         identifier = g_supplicant_network_get_identifier(network);
1717         name = g_supplicant_network_get_name(network);
1718
1719         DBG("name %s", name);
1720
1721         if (wifi == NULL)
1722                 return;
1723
1724         connman_network = connman_device_get_network(wifi->device, identifier);
1725         if (connman_network == NULL)
1726                 return;
1727
1728         wifi->networks = g_slist_remove(wifi->networks, connman_network);
1729
1730         connman_device_remove_network(wifi->device, connman_network);
1731         connman_network_unref(connman_network);
1732 }
1733
1734 static void network_changed(GSupplicantNetwork *network, const char *property)
1735 {
1736         GSupplicantInterface *interface;
1737         struct wifi_data *wifi;
1738         const char *name, *identifier;
1739         struct connman_network *connman_network;
1740
1741         interface = g_supplicant_network_get_interface(network);
1742         wifi = g_supplicant_interface_get_data(interface);
1743         identifier = g_supplicant_network_get_identifier(network);
1744         name = g_supplicant_network_get_name(network);
1745
1746         DBG("name %s", name);
1747
1748         if (wifi == NULL)
1749                 return;
1750
1751         connman_network = connman_device_get_network(wifi->device, identifier);
1752         if (connman_network == NULL)
1753                 return;
1754
1755         if (g_str_equal(property, "Signal") == TRUE) {
1756                connman_network_set_strength(connman_network,
1757                                         calculate_strength(network));
1758                connman_network_update(connman_network);
1759         }
1760 }
1761
1762 static void debug(const char *str)
1763 {
1764         if (getenv("CONNMAN_SUPPLICANT_DEBUG"))
1765                 connman_debug("%s", str);
1766 }
1767
1768 static const GSupplicantCallbacks callbacks = {
1769         .system_ready           = system_ready,
1770         .system_killed          = system_killed,
1771         .interface_added        = interface_added,
1772         .interface_state        = interface_state,
1773         .interface_removed      = interface_removed,
1774         .scan_started           = scan_started,
1775         .scan_finished          = scan_finished,
1776         .network_added          = network_added,
1777         .network_removed        = network_removed,
1778         .network_changed        = network_changed,
1779         .debug                  = debug,
1780 };
1781
1782
1783 static int tech_probe(struct connman_technology *technology)
1784 {
1785         wifi_technology = technology;
1786
1787         return 0;
1788 }
1789
1790 static void tech_remove(struct connman_technology *technology)
1791 {
1792         wifi_technology = NULL;
1793 }
1794
1795 struct wifi_tethering_info {
1796         struct wifi_data *wifi;
1797         struct connman_technology *technology;
1798         char *ifname;
1799         GSupplicantSSID *ssid;
1800 };
1801
1802 static GSupplicantSSID *ssid_ap_init(const char *ssid, const char *passphrase)
1803 {
1804         GSupplicantSSID *ap;
1805
1806         ap = g_try_malloc0(sizeof(GSupplicantSSID));
1807         if (ap == NULL)
1808                 return NULL;
1809
1810         ap->mode = G_SUPPLICANT_MODE_MASTER;
1811         ap->ssid = ssid;
1812         ap->ssid_len = strlen(ssid);
1813         ap->scan_ssid = 0;
1814         ap->freq = 2412;
1815
1816         if (passphrase == NULL || strlen(passphrase) == 0) {
1817                 ap->security = G_SUPPLICANT_SECURITY_NONE;
1818                 ap->passphrase = NULL;
1819         } else {
1820                ap->security = G_SUPPLICANT_SECURITY_PSK;
1821                ap->protocol = G_SUPPLICANT_PROTO_RSN;
1822                ap->pairwise_cipher = G_SUPPLICANT_PAIRWISE_CCMP;
1823                ap->group_cipher = G_SUPPLICANT_GROUP_CCMP;
1824                ap->passphrase = passphrase;
1825         }
1826
1827         return ap;
1828 }
1829
1830 static void ap_start_callback(int result, GSupplicantInterface *interface,
1831                                                         void *user_data)
1832 {
1833         struct wifi_tethering_info *info = user_data;
1834
1835         DBG("result %d index %d bridge %s",
1836                 result, info->wifi->index, info->wifi->bridge);
1837
1838         if (result < 0) {
1839                 connman_inet_remove_from_bridge(info->wifi->index,
1840                                                         info->wifi->bridge);
1841                 connman_technology_tethering_notify(info->technology, FALSE);
1842         }
1843
1844         g_free(info->ifname);
1845         g_free(info);
1846 }
1847
1848 static void ap_create_callback(int result,
1849                                 GSupplicantInterface *interface,
1850                                         void *user_data)
1851 {
1852         struct wifi_tethering_info *info = user_data;
1853
1854         DBG("result %d ifname %s", result,
1855                                 g_supplicant_interface_get_ifname(interface));
1856
1857         if (result < 0) {
1858                 connman_inet_remove_from_bridge(info->wifi->index,
1859                                                         info->wifi->bridge);
1860                 connman_technology_tethering_notify(info->technology, FALSE);
1861
1862                 g_free(info->ifname);
1863                 g_free(info);
1864                 return;
1865         }
1866
1867         info->wifi->interface = interface;
1868         g_supplicant_interface_set_data(interface, info->wifi);
1869
1870         if (g_supplicant_interface_set_apscan(interface, 2) < 0)
1871                 connman_error("Failed to set interface ap_scan property");
1872
1873         g_supplicant_interface_connect(interface, info->ssid,
1874                                                 ap_start_callback, info);
1875 }
1876
1877 static void sta_remove_callback(int result,
1878                                 GSupplicantInterface *interface,
1879                                         void *user_data)
1880 {
1881         struct wifi_tethering_info *info = user_data;
1882         const char *driver = connman_option_get_string("wifi");
1883
1884         DBG("ifname %s result %d ", info->ifname, result);
1885
1886         if (result < 0) {
1887                 info->wifi->tethering = TRUE;
1888
1889                 g_free(info->ifname);
1890                 g_free(info);
1891                 return;
1892         }
1893
1894         info->wifi->interface = NULL;
1895
1896         connman_technology_tethering_notify(info->technology, TRUE);
1897
1898         g_supplicant_interface_create(info->ifname, driver, info->wifi->bridge,
1899                                                 ap_create_callback,
1900                                                         info);
1901 }
1902
1903 static int tech_set_tethering(struct connman_technology *technology,
1904                                 const char *identifier, const char *passphrase,
1905                                 const char *bridge, connman_bool_t enabled)
1906 {
1907         GList *list;
1908         GSupplicantInterface *interface;
1909         struct wifi_data *wifi;
1910         struct wifi_tethering_info *info;
1911         const char *ifname;
1912         unsigned int mode;
1913         int err;
1914
1915         DBG("");
1916
1917         if (enabled == FALSE) {
1918                 for (list = iface_list; list; list = list->next) {
1919                         wifi = list->data;
1920
1921                         if (wifi->tethering == TRUE) {
1922                                 wifi->tethering = FALSE;
1923
1924                                 connman_inet_remove_from_bridge(wifi->index,
1925                                                                         bridge);
1926                                 wifi->bridged = FALSE;
1927                         }
1928                 }
1929
1930                 connman_technology_tethering_notify(technology, FALSE);
1931
1932                 return 0;
1933         }
1934
1935         for (list = iface_list; list; list = list->next) {
1936                 wifi = list->data;
1937
1938                 interface = wifi->interface;
1939
1940                 if (interface == NULL)
1941                         continue;
1942
1943                 ifname = g_supplicant_interface_get_ifname(wifi->interface);
1944
1945                 mode = g_supplicant_interface_get_mode(interface);
1946                 if ((mode & G_SUPPLICANT_CAPABILITY_MODE_AP) == 0) {
1947                         DBG("%s does not support AP mode", ifname);
1948                         continue;
1949                 }
1950
1951                 info = g_try_malloc0(sizeof(struct wifi_tethering_info));
1952                 if (info == NULL)
1953                         return -ENOMEM;
1954
1955                 info->wifi = wifi;
1956                 info->technology = technology;
1957                 info->wifi->bridge = bridge;
1958                 info->ssid = ssid_ap_init(identifier, passphrase);
1959                 if (info->ssid == NULL) {
1960                         g_free(info);
1961                         continue;
1962                 }
1963                 info->ifname = g_strdup(ifname);
1964                 if (info->ifname == NULL) {
1965                         g_free(info);
1966                         continue;
1967                 }
1968
1969                 info->wifi->tethering = TRUE;
1970
1971                 err = g_supplicant_interface_remove(interface,
1972                                                 sta_remove_callback,
1973                                                         info);
1974                 if (err == 0)
1975                         return err;
1976         }
1977
1978         return -EOPNOTSUPP;
1979 }
1980
1981 static void regdom_callback(int result, const char *alpha2, void *user_data)
1982 {
1983         DBG("");
1984
1985         if (wifi_technology == NULL)
1986                 return;
1987
1988         if (result != 0)
1989                 alpha2 = NULL;
1990
1991         connman_technology_regdom_notify(wifi_technology, alpha2);
1992 }
1993
1994 static int tech_set_regdom(struct connman_technology *technology, const char *alpha2)
1995 {
1996         return g_supplicant_set_country(alpha2, regdom_callback, NULL);
1997 }
1998
1999 static struct connman_technology_driver tech_driver = {
2000         .name           = "wifi",
2001         .type           = CONNMAN_SERVICE_TYPE_WIFI,
2002         .probe          = tech_probe,
2003         .remove         = tech_remove,
2004         .set_tethering  = tech_set_tethering,
2005         .set_regdom     = tech_set_regdom,
2006 };
2007
2008 static int wifi_init(void)
2009 {
2010         int err;
2011
2012         err = connman_network_driver_register(&network_driver);
2013         if (err < 0)
2014                 return err;
2015
2016         err = g_supplicant_register(&callbacks);
2017         if (err < 0) {
2018                 connman_network_driver_unregister(&network_driver);
2019                 return err;
2020         }
2021
2022         err = connman_technology_driver_register(&tech_driver);
2023         if (err < 0) {
2024                 g_supplicant_unregister(&callbacks);
2025                 connman_network_driver_unregister(&network_driver);
2026                 return err;
2027         }
2028
2029         return 0;
2030 }
2031
2032 static void wifi_exit(void)
2033 {
2034         DBG();
2035
2036         connman_technology_driver_unregister(&tech_driver);
2037
2038         g_supplicant_unregister(&callbacks);
2039
2040         connman_network_driver_unregister(&network_driver);
2041 }
2042
2043 CONNMAN_PLUGIN_DEFINE(wifi, "WiFi interface plugin", VERSION,
2044                 CONNMAN_PLUGIN_PRIORITY_DEFAULT, wifi_init, wifi_exit)