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