plugins/supplicant.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2009  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <stdio.h>
  27 #include <unistd.h>
  28 #include <errno.h>
  29 #include <stdlib.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 #include <gdbus.h>
  38
  39 #define CONNMAN_API_SUBJECT_TO_CHANGE
  40 #include <connman/device.h>
  41 #include <connman/option.h>
  42 #include <connman/inet.h>
  43 #include <connman/dbus.h>
  44 #include <connman/log.h>
  45
  46 #include "supplicant.h"
  47
  48 #define TIMEOUT 5000
  49
  50 #define IEEE80211_CAP_ESS       0x0001
  51 #define IEEE80211_CAP_IBSS      0x0002
  52 #define IEEE80211_CAP_PRIVACY   0x0010
  53
  54 #define SUPPLICANT_NAME  "fi.epitest.hostap.WPASupplicant"
  55 #define SUPPLICANT_INTF  "fi.epitest.hostap.WPASupplicant"
  56 #define SUPPLICANT_PATH  "/fi/epitest/hostap/WPASupplicant"
  57
  58 /* Taken from "WPA Supplicant - Common definitions" */
  59 enum supplicant_state {
  60         /**
  61          * WPA_DISCONNECTED - Disconnected state
  62          *
  63          * This state indicates that client is not associated, but is likely to
  64          * start looking for an access point. This state is entered when a
  65          * connection is lost.
  66          */
  67         WPA_DISCONNECTED,
  68
  69         /**
  70          * WPA_INACTIVE - Inactive state (wpa_supplicant disabled)
  71          *
  72          * This state is entered if there are no enabled networks in the
  73          * configuration. wpa_supplicant is not trying to associate with a new
  74          * network and external interaction (e.g., ctrl_iface call to add or
  75          * enable a network) is needed to start association.
  76          */
  77         WPA_INACTIVE,
  78
  79         /**
  80          * WPA_SCANNING - Scanning for a network
  81          *
  82          * This state is entered when wpa_supplicant starts scanning for a
  83          * network.
  84          */
  85         WPA_SCANNING,
  86
  87         /**
  88          * WPA_ASSOCIATING - Trying to associate with a BSS/SSID
  89          *
  90          * This state is entered when wpa_supplicant has found a suitable BSS
  91          * to associate with and the driver is configured to try to associate
  92          * with this BSS in ap_scan=1 mode. When using ap_scan=2 mode, this
  93          * state is entered when the driver is configured to try to associate
  94          * with a network using the configured SSID and security policy.
  95          */
  96         WPA_ASSOCIATING,
  97
  98         /**
  99          * WPA_ASSOCIATED - Association completed
 100          *
 101          * This state is entered when the driver reports that association has
 102          * been successfully completed with an AP. If IEEE 802.1X is used
 103          * (with or without WPA/WPA2), wpa_supplicant remains in this state
 104          * until the IEEE 802.1X/EAPOL authentication has been completed.
 105          */
 106         WPA_ASSOCIATED,
 107
 108         /**
 109          * WPA_4WAY_HANDSHAKE - WPA 4-Way Key Handshake in progress
 110          *
 111          * This state is entered when WPA/WPA2 4-Way Handshake is started. In
 112          * case of WPA-PSK, this happens when receiving the first EAPOL-Key
 113          * frame after association. In case of WPA-EAP, this state is entered
 114          * when the IEEE 802.1X/EAPOL authentication has been completed.
 115          */
 116         WPA_4WAY_HANDSHAKE,
 117
 118         /**
 119          * WPA_GROUP_HANDSHAKE - WPA Group Key Handshake in progress
 120          *
 121          * This state is entered when 4-Way Key Handshake has been completed
 122          * (i.e., when the supplicant sends out message 4/4) and when Group
 123          * Key rekeying is started by the AP (i.e., when supplicant receives
 124          * message 1/2).
 125          */
 126         WPA_GROUP_HANDSHAKE,
 127
 128         /**
 129          * WPA_COMPLETED - All authentication completed
 130          *
 131          * This state is entered when the full authentication process is
 132          * completed. In case of WPA2, this happens when the 4-Way Handshake is
 133          * successfully completed. With WPA, this state is entered after the
 134          * Group Key Handshake; with IEEE 802.1X (non-WPA) connection is
 135          * completed after dynamic keys are received (or if not used, after
 136          * the EAP authentication has been completed). With static WEP keys and
 137          * plaintext connections, this state is entered when an association
 138          * has been completed.
 139          *
 140          * This state indicates that the supplicant has completed its
 141          * processing for the association phase and that data connection is
 142          * fully configured.
 143          */
 144         WPA_COMPLETED,
 145
 146         /**
 147          * WPA_INVALID - Invalid state (parsing error)
 148          *
 149          * This state is returned if the string input is invalid. It is not
 150          * an official wpa_supplicant state.
 151          */
 152         WPA_INVALID,
 153 };
 154
 155 struct supplicant_result {
 156         char *path;
 157         char *name;
 158         unsigned char *addr;
 159         unsigned int addr_len;
 160         unsigned char *ssid;
 161         unsigned int ssid_len;
 162         dbus_uint16_t capabilities;
 163         gboolean adhoc;
 164         gboolean has_wep;
 165         gboolean has_wpa;
 166         gboolean has_rsn;
 167         gboolean has_wps;
 168         dbus_int32_t frequency;
 169         dbus_int32_t quality;
 170         dbus_int32_t noise;
 171         dbus_int32_t level;
 172         dbus_int32_t maxrate;
 173 };
 174
 175 struct supplicant_task {
 176         int ifindex;
 177         char *ifname;
 178         gboolean mac80211;
 179         struct connman_device *device;
 180         struct connman_network *network;
 181         struct connman_network *pending_network;
 182         char *path;
 183         char *netpath;
 184         gboolean created;
 185         enum supplicant_state state;
 186         gboolean scanning;
 187         GSList *scan_results;
 188         DBusPendingCall *scan_call;
 189         DBusPendingCall *result_call;
 190         struct iw_range *range;
 191         gboolean disconnecting;
 192 };
 193
 194 static GSList *task_list = NULL;
 195
 196 static DBusConnection *connection;
 197
 198 static void free_task(struct supplicant_task *task)
 199 {
 200         DBG("task %p", task);
 201
 202         g_free(task->ifname);
 203         g_free(task->path);
 204         g_free(task);
 205 }
 206
 207 static struct supplicant_task *find_task_by_index(int index)
 208 {
 209         GSList *list;
 210
 211         for (list = task_list; list; list = list->next) {
 212                 struct supplicant_task *task = list->data;
 213
 214                 if (task->ifindex == index)
 215                         return task;
 216         }
 217
 218         return NULL;
 219 }
 220
 221 static struct supplicant_task *find_task_by_path(const char *path)
 222 {
 223         GSList *list;
 224
 225         for (list = task_list; list; list = list->next) {
 226                 struct supplicant_task *task = list->data;
 227
 228                 if (g_strcmp0(task->path, path) == 0)
 229                         return task;
 230         }
 231
 232         return NULL;
 233 }
 234
 235 static int get_range(struct supplicant_task *task)
 236 {
 237         struct iwreq wrq;
 238         int fd, err;
 239
 240         fd = socket(PF_INET, SOCK_DGRAM, 0);
 241         if (fd < 0)
 242                 return -1;
 243
 244         memset(&wrq, 0, sizeof(struct iwreq));
 245         strncpy(wrq.ifr_name, task->ifname, IFNAMSIZ);
 246         wrq.u.data.pointer = task->range;
 247         wrq.u.data.length = sizeof(struct iw_range);
 248
 249         err = ioctl(fd, SIOCGIWRANGE, &wrq);
 250
 251         close(fd);
 252
 253         return err;
 254 }
 255
 256 static int get_bssid(struct connman_device *device,
 257                                 unsigned char *bssid, unsigned int *bssid_len)
 258 {
 259         struct iwreq wrq;
 260         char *ifname;
 261         int ifindex;
 262         int fd, err;
 263
 264         ifindex = connman_device_get_index(device);
 265         if (ifindex < 0)
 266                 return -EINVAL;
 267
 268         ifname = connman_inet_ifname(ifindex);
 269         if (ifname == NULL)
 270                 return -EINVAL;
 271
 272         fd = socket(PF_INET, SOCK_DGRAM, 0);
 273         if (fd < 0) {
 274                 g_free(ifname);
 275                 return -EINVAL;
 276         }
 277
 278         memset(&wrq, 0, sizeof(wrq));
 279         strncpy(wrq.ifr_name, ifname, IFNAMSIZ);
 280
 281         err = ioctl(fd, SIOCGIWAP, &wrq);
 282
 283         g_free(ifname);
 284         close(fd);
 285
 286         if (err < 0)
 287                 return -EIO;
 288
 289         memcpy(bssid, wrq.u.ap_addr.sa_data, ETH_ALEN);
 290         *bssid_len = ETH_ALEN;
 291
 292         return 0;
 293 }
 294
 295 static void add_interface_reply(DBusPendingCall *call, void *user_data)
 296 {
 297         struct supplicant_task *task = user_data;
 298         DBusMessage *reply;
 299         DBusError error;
 300         const char *path;
 301
 302         DBG("task %p", task);
 303
 304         reply = dbus_pending_call_steal_reply(call);
 305         if (reply == NULL)
 306                 return;
 307
 308         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR)
 309                 goto failed;
 310
 311         dbus_error_init(&error);
 312
 313         if (dbus_message_get_args(reply, &error, DBUS_TYPE_OBJECT_PATH, &path,
 314                                                 DBUS_TYPE_INVALID) == FALSE) {
 315                 if (dbus_error_is_set(&error) == TRUE) {
 316                         connman_error("%s", error.message);
 317                         dbus_error_free(&error);
 318                 } else
 319                         connman_error("Wrong arguments for add interface");
 320                 goto failed;
 321         }
 322
 323         DBG("path %s", path);
 324
 325         task->path = g_strdup(path);
 326         task->created = TRUE;
 327
 328         connman_device_set_powered(task->device, TRUE);
 329
 330         dbus_message_unref(reply);
 331
 332         return;
 333
 334 failed:
 335         dbus_message_unref(reply);
 336
 337         task_list = g_slist_remove(task_list, task);
 338
 339         connman_device_unref(task->device);
 340
 341         free_task(task);
 342 }
 343
 344 static int add_interface(struct supplicant_task *task)
 345 {
 346         const char *driver = connman_option_get_string("wifi");
 347         DBusMessage *message;
 348         DBusMessageIter array, dict;
 349         DBusPendingCall *call;
 350
 351         DBG("task %p", task);
 352
 353         message = dbus_message_new_method_call(SUPPLICANT_NAME, SUPPLICANT_PATH,
 354                                         SUPPLICANT_INTF, "addInterface");
 355         if (message == NULL)
 356                 return -ENOMEM;
 357
 358         dbus_message_set_auto_start(message, FALSE);
 359
 360         dbus_message_iter_init_append(message, &array);
 361
 362         dbus_message_iter_append_basic(&array,
 363                                         DBUS_TYPE_STRING, &task->ifname);
 364
 365         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
 366                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 367                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 368                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 369
 370         connman_dbus_dict_append_variant(&dict, "driver",
 371                                                 DBUS_TYPE_STRING, &driver);
 372
 373         dbus_message_iter_close_container(&array, &dict);
 374
 375         if (dbus_connection_send_with_reply(connection, message,
 376                                                 &call, TIMEOUT) == FALSE) {
 377                 connman_error("Failed to add interface");
 378                 dbus_message_unref(message);
 379                 return -EIO;
 380         }
 381
 382         if (call == NULL) {
 383                 connman_error("D-Bus connection not available");
 384                 dbus_message_unref(message);
 385                 return -EIO;
 386         }
 387
 388         dbus_pending_call_set_notify(call, add_interface_reply, task, NULL);
 389
 390         dbus_message_unref(message);
 391
 392         return -EINPROGRESS;
 393 }
 394
 395 static void get_interface_reply(DBusPendingCall *call, void *user_data)
 396 {
 397         struct supplicant_task *task = user_data;
 398         DBusMessage *reply;
 399         DBusError error;
 400         const char *path;
 401
 402         DBG("task %p", task);
 403
 404         reply = dbus_pending_call_steal_reply(call);
 405         if (reply == NULL)
 406                 return;
 407
 408         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
 409                 add_interface(task);
 410                 goto done;
 411         }
 412
 413         dbus_error_init(&error);
 414
 415         if (dbus_message_get_args(reply, &error, DBUS_TYPE_OBJECT_PATH, &path,
 416                                                 DBUS_TYPE_INVALID) == FALSE) {
 417                 if (dbus_error_is_set(&error) == TRUE) {
 418                         connman_error("%s", error.message);
 419                         dbus_error_free(&error);
 420                 } else
 421                         connman_error("Wrong arguments for get interface");
 422                 goto done;
 423         }
 424
 425         DBG("path %s", path);
 426
 427         task->path = g_strdup(path);
 428         task->created = FALSE;
 429
 430         connman_device_set_powered(task->device, TRUE);
 431
 432 done:
 433         dbus_message_unref(reply);
 434 }
 435
 436 static int create_interface(struct supplicant_task *task)
 437 {
 438         DBusMessage *message;
 439         DBusPendingCall *call;
 440
 441         DBG("task %p", task);
 442
 443         message = dbus_message_new_method_call(SUPPLICANT_NAME, SUPPLICANT_PATH,
 444                                         SUPPLICANT_INTF, "getInterface");
 445         if (message == NULL)
 446                 return -ENOMEM;
 447
 448         dbus_message_set_auto_start(message, FALSE);
 449
 450         dbus_message_append_args(message, DBUS_TYPE_STRING, &task->ifname,
 451                                                         DBUS_TYPE_INVALID);
 452
 453         if (dbus_connection_send_with_reply(connection, message,
 454                                                 &call, TIMEOUT) == FALSE) {
 455                 connman_error("Failed to get interface");
 456                 dbus_message_unref(message);
 457                 return -EIO;
 458         }
 459
 460         if (call == NULL) {
 461                 connman_error("D-Bus connection not available");
 462                 dbus_message_unref(message);
 463                 return -EIO;
 464         }
 465
 466         dbus_pending_call_set_notify(call, get_interface_reply, task, NULL);
 467
 468         dbus_message_unref(message);
 469
 470         return -EINPROGRESS;
 471 }
 472
 473 static void remove_interface_reply(DBusPendingCall *call, void *user_data)
 474 {
 475         struct supplicant_task *task = user_data;
 476         DBusMessage *reply;
 477
 478         DBG("task %p", task);
 479
 480         reply = dbus_pending_call_steal_reply(call);
 481
 482         connman_device_set_powered(task->device, FALSE);
 483
 484         connman_device_unref(task->device);
 485
 486         connman_inet_ifdown(task->ifindex);
 487
 488         free_task(task);
 489
 490         dbus_message_unref(reply);
 491 }
 492
 493 static int remove_interface(struct supplicant_task *task)
 494 {
 495         DBusMessage *message;
 496         DBusPendingCall *call;
 497
 498         DBG("task %p", task);
 499
 500 #if 0
 501         if (task->created == FALSE) {
 502                 connman_device_set_powered(task->device, FALSE);
 503                 return 0;
 504         }
 505 #endif
 506
 507         message = dbus_message_new_method_call(SUPPLICANT_NAME, SUPPLICANT_PATH,
 508                                         SUPPLICANT_INTF, "removeInterface");
 509         if (message == NULL)
 510                 return -ENOMEM;
 511
 512         dbus_message_set_auto_start(message, FALSE);
 513
 514         dbus_message_append_args(message, DBUS_TYPE_OBJECT_PATH, &task->path,
 515                                                         DBUS_TYPE_INVALID);
 516
 517         if (dbus_connection_send_with_reply(connection, message,
 518                                                 &call, TIMEOUT) == FALSE) {
 519                 connman_error("Failed to remove interface");
 520                 dbus_message_unref(message);
 521                 return -EIO;
 522         }
 523
 524         if (call == NULL) {
 525                 connman_error("D-Bus connection not available");
 526                 dbus_message_unref(message);
 527                 return -EIO;
 528         }
 529
 530         dbus_pending_call_set_notify(call, remove_interface_reply, task, NULL);
 531
 532         dbus_message_unref(message);
 533
 534         return -EINPROGRESS;
 535 }
 536
 537 static int set_ap_scan(struct supplicant_task *task)
 538 {
 539         DBusMessage *message, *reply;
 540         DBusError error;
 541         guint32 ap_scan = 1;
 542
 543         DBG("task %p", task);
 544
 545         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 546                                 SUPPLICANT_INTF ".Interface", "setAPScan");
 547         if (message == NULL)
 548                 return -ENOMEM;
 549
 550         dbus_message_set_auto_start(message, FALSE);
 551
 552         dbus_message_append_args(message, DBUS_TYPE_UINT32, &ap_scan,
 553                                                         DBUS_TYPE_INVALID);
 554
 555         dbus_error_init(&error);
 556
 557         reply = dbus_connection_send_with_reply_and_block(connection,
 558                                                         message, -1, &error);
 559         if (reply == NULL) {
 560                 if (dbus_error_is_set(&error) == TRUE) {
 561                         connman_error("%s", error.message);
 562                         dbus_error_free(&error);
 563                 } else
 564                         connman_error("Failed to set AP scan");
 565                 dbus_message_unref(message);
 566                 return -EIO;
 567         }
 568
 569         dbus_message_unref(message);
 570
 571         dbus_message_unref(reply);
 572
 573         return 0;
 574 }
 575
 576 static int add_network(struct supplicant_task *task)
 577 {
 578         DBusMessage *message, *reply;
 579         DBusError error;
 580         const char *path;
 581
 582         DBG("task %p", task);
 583
 584         if (task->netpath != NULL)
 585                 return -EALREADY;
 586
 587         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 588                                 SUPPLICANT_INTF ".Interface", "addNetwork");
 589         if (message == NULL)
 590                 return -ENOMEM;
 591
 592         dbus_message_set_auto_start(message, FALSE);
 593
 594         dbus_error_init(&error);
 595
 596         reply = dbus_connection_send_with_reply_and_block(connection,
 597                                                         message, -1, &error);
 598         if (reply == NULL) {
 599                 if (dbus_error_is_set(&error) == TRUE) {
 600                         connman_error("%s", error.message);
 601                         dbus_error_free(&error);
 602                 } else
 603                         connman_error("Failed to add network");
 604                 dbus_message_unref(message);
 605                 return -EIO;
 606         }
 607
 608         dbus_message_unref(message);
 609
 610         dbus_error_init(&error);
 611
 612         if (dbus_message_get_args(reply, &error, DBUS_TYPE_OBJECT_PATH, &path,
 613                                                 DBUS_TYPE_INVALID) == FALSE) {
 614                 if (dbus_error_is_set(&error) == TRUE) {
 615                         connman_error("%s", error.message);
 616                         dbus_error_free(&error);
 617                 } else
 618                         connman_error("Wrong arguments for network");
 619                 dbus_message_unref(reply);
 620                 return -EIO;
 621         }
 622
 623         DBG("path %s", path);
 624
 625         task->netpath = g_strdup(path);
 626
 627         dbus_message_unref(reply);
 628
 629         return 0;
 630 }
 631
 632 static int remove_network(struct supplicant_task *task)
 633 {
 634         DBusMessage *message, *reply;
 635         DBusError error;
 636
 637         DBG("task %p", task);
 638
 639         if (task->netpath == NULL)
 640                 return -EINVAL;
 641
 642         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 643                                 SUPPLICANT_INTF ".Interface", "removeNetwork");
 644         if (message == NULL)
 645                 return -ENOMEM;
 646
 647         dbus_message_set_auto_start(message, FALSE);
 648
 649         dbus_message_append_args(message, DBUS_TYPE_OBJECT_PATH, &task->netpath,
 650                                                         DBUS_TYPE_INVALID);
 651
 652         dbus_error_init(&error);
 653
 654         reply = dbus_connection_send_with_reply_and_block(connection,
 655                                                         message, -1, &error);
 656         if (reply == NULL) {
 657                 if (dbus_error_is_set(&error) == TRUE) {
 658                         connman_error("%s", error.message);
 659                         dbus_error_free(&error);
 660                 } else
 661                         connman_error("Failed to remove network");
 662                 dbus_message_unref(message);
 663                 return -EIO;
 664         }
 665
 666         dbus_message_unref(message);
 667
 668         dbus_message_unref(reply);
 669
 670         g_free(task->netpath);
 671         task->netpath = NULL;
 672
 673         return 0;
 674 }
 675
 676 static int select_network(struct supplicant_task *task)
 677 {
 678         DBusMessage *message, *reply;
 679         DBusError error;
 680
 681         DBG("task %p", task);
 682
 683         if (task->netpath == NULL)
 684                 return -EINVAL;
 685
 686         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 687                                 SUPPLICANT_INTF ".Interface", "selectNetwork");
 688         if (message == NULL)
 689                 return -ENOMEM;
 690
 691         dbus_message_set_auto_start(message, FALSE);
 692
 693         dbus_message_append_args(message, DBUS_TYPE_OBJECT_PATH, &task->netpath,
 694                                                         DBUS_TYPE_INVALID);
 695
 696         dbus_error_init(&error);
 697
 698         reply = dbus_connection_send_with_reply_and_block(connection,
 699                                                         message, -1, &error);
 700         if (reply == NULL) {
 701                 if (dbus_error_is_set(&error) == TRUE) {
 702                         connman_error("%s", error.message);
 703                         dbus_error_free(&error);
 704                 } else
 705                         connman_error("Failed to select network");
 706                 dbus_message_unref(message);
 707                 return -EIO;
 708         }
 709
 710         dbus_message_unref(message);
 711
 712         dbus_message_unref(reply);
 713
 714         return 0;
 715 }
 716
 717 static int disconnect_network(struct supplicant_task *task)
 718 {
 719         DBusMessage *message, *reply;
 720         DBusError error;
 721
 722         DBG("task %p", task);
 723
 724         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 725                                 SUPPLICANT_INTF ".Interface", "disconnect");
 726         if (message == NULL)
 727                 return -ENOMEM;
 728
 729         dbus_message_set_auto_start(message, FALSE);
 730
 731         dbus_error_init(&error);
 732
 733         reply = dbus_connection_send_with_reply_and_block(connection,
 734                                                         message, -1, &error);
 735         if (reply == NULL) {
 736                 if (dbus_error_is_set(&error) == TRUE) {
 737                         connman_error("%s", error.message);
 738                         dbus_error_free(&error);
 739                 } else
 740                         connman_error("Failed to disconnect network");
 741                 dbus_message_unref(message);
 742                 return -EIO;
 743         }
 744
 745         dbus_message_unref(message);
 746
 747         dbus_message_unref(reply);
 748
 749         return 0;
 750 }
 751
 752 static int set_network(struct supplicant_task *task,
 753                                 const unsigned char *network, int len,
 754                                 const char *address, const char *security,
 755                                                         const char *passphrase)
 756 {
 757         DBusMessage *message, *reply;
 758         DBusMessageIter array, dict;
 759         DBusError error;
 760         dbus_uint32_t scan_ssid = 1;
 761
 762         DBG("task %p", task);
 763
 764         if (task->netpath == NULL)
 765                 return -EINVAL;
 766
 767         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->netpath,
 768                                         SUPPLICANT_INTF ".Network", "set");
 769         if (message == NULL)
 770                 return -ENOMEM;
 771
 772         dbus_message_set_auto_start(message, FALSE);
 773
 774         dbus_message_iter_init_append(message, &array);
 775
 776         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
 777                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 778                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 779                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 780
 781         connman_dbus_dict_append_variant(&dict, "scan_ssid",
 782                                          DBUS_TYPE_UINT32, &scan_ssid);
 783
 784         if (network)
 785                 connman_dbus_dict_append_array(&dict, "ssid",
 786                                                 DBUS_TYPE_BYTE, &network, len);
 787         else if (address)
 788                 connman_dbus_dict_append_variant(&dict, "bssid",
 789                                                 DBUS_TYPE_STRING, &address);
 790
 791         if (g_ascii_strcasecmp(security, "wpa") == 0 ||
 792                                 g_ascii_strcasecmp(security, "rsn") == 0) {
 793                 const char *key_mgmt = "WPA-PSK";
 794                 connman_dbus_dict_append_variant(&dict, "key_mgmt",
 795                                                 DBUS_TYPE_STRING, &key_mgmt);
 796
 797                 if (passphrase && strlen(passphrase) > 0)
 798                         connman_dbus_dict_append_variant(&dict, "psk",
 799                                                 DBUS_TYPE_STRING, &passphrase);
 800         } else if (g_ascii_strcasecmp(security, "wep") == 0) {
 801                 const char *key_mgmt = "NONE";
 802                 const char *auth_alg = "OPEN";
 803                 const char *key_index = "0";
 804
 805                 if (task->mac80211 == TRUE)
 806                         auth_alg = "OPEN SHARED";
 807
 808                 connman_dbus_dict_append_variant(&dict, "auth_alg",
 809                                                 DBUS_TYPE_STRING, &auth_alg);
 810
 811                 connman_dbus_dict_append_variant(&dict, "key_mgmt",
 812                                                 DBUS_TYPE_STRING, &key_mgmt);
 813
 814                 if (passphrase) {
 815                         int size = strlen(passphrase);
 816                         if (size == 10 || size == 26) {
 817                                 unsigned char *key = malloc(13);
 818                                 char tmp[3];
 819                                 int i;
 820                                 memset(tmp, 0, sizeof(tmp));
 821                                 if (key == NULL)
 822                                         size = 0;
 823                                 for (i = 0; i < size / 2; i++) {
 824                                         memcpy(tmp, passphrase + (i * 2), 2);
 825                                         key[i] = (unsigned char) strtol(tmp,
 826                                                                 NULL, 16);
 827                                 }
 828                                 connman_dbus_dict_append_array(&dict,
 829                                                 "wep_key0", DBUS_TYPE_BYTE,
 830                                                         &key, size / 2);
 831                                 free(key);
 832                         } else
 833                                 connman_dbus_dict_append_variant(&dict,
 834                                                 "wep_key0", DBUS_TYPE_STRING,
 835                                                                 &passphrase);
 836
 837                         connman_dbus_dict_append_variant(&dict, "wep_tx_keyidx",
 838                                                 DBUS_TYPE_STRING, &key_index);
 839                 }
 840         } else {
 841                 const char *key_mgmt = "NONE";
 842                 connman_dbus_dict_append_variant(&dict, "key_mgmt",
 843                                                 DBUS_TYPE_STRING, &key_mgmt);
 844         }
 845
 846         dbus_message_iter_close_container(&array, &dict);
 847
 848         dbus_error_init(&error);
 849
 850         reply = dbus_connection_send_with_reply_and_block(connection,
 851                                                         message, -1, &error);
 852         if (reply == NULL) {
 853                 if (dbus_error_is_set(&error) == TRUE) {
 854                         connman_error("%s", error.message);
 855                         dbus_error_free(&error);
 856                 } else
 857                         connman_error("Failed to set network options");
 858                 dbus_message_unref(message);
 859                 return -EIO;
 860         }
 861
 862         dbus_message_unref(message);
 863
 864         dbus_message_unref(reply);
 865
 866         return 0;
 867 }
 868
 869 static void scan_reply(DBusPendingCall *call, void *user_data)
 870 {
 871         struct supplicant_task *task = user_data;
 872         DBusMessage *reply;
 873
 874         DBG("task %p", task);
 875
 876         task->scan_call = NULL;
 877
 878         reply = dbus_pending_call_steal_reply(call);
 879         if (reply == NULL)
 880                 return;
 881
 882         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
 883                 connman_device_set_scanning(task->device, FALSE);
 884                 goto done;
 885         }
 886
 887         if (task->scanning == TRUE)
 888                 connman_device_set_scanning(task->device, TRUE);
 889
 890 done:
 891         dbus_message_unref(reply);
 892 }
 893
 894
 895 static int initiate_scan(struct supplicant_task *task)
 896 {
 897         DBusMessage *message;
 898
 899         DBG("task %p", task);
 900
 901         if (task->path == NULL)
 902                 return -EINVAL;
 903
 904         if (task->scan_call != NULL)
 905                 return -EALREADY;
 906
 907         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 908                                         SUPPLICANT_INTF ".Interface", "scan");
 909         if (message == NULL)
 910                 return -ENOMEM;
 911
 912         dbus_message_set_auto_start(message, FALSE);
 913
 914         if (dbus_connection_send_with_reply(connection, message,
 915                                         &task->scan_call, TIMEOUT) == FALSE) {
 916                 connman_error("Failed to initiate scan");
 917                 dbus_message_unref(message);
 918                 return -EIO;
 919         }
 920
 921         if (task->scan_call == NULL) {
 922                 connman_error("D-Bus connection not available");
 923                 dbus_message_unref(message);
 924                 return -EIO;
 925         }
 926
 927         dbus_pending_call_set_notify(task->scan_call, scan_reply, task, NULL);
 928
 929         dbus_message_unref(message);
 930
 931         return -EINPROGRESS;
 932 }
 933
 934 static struct {
 935         char *name;
 936         char *value;
 937 } special_ssid[] = {
 938         { "<hidden>", "hidden"  },
 939         { "default",  "linksys" },
 940         { "wireless"  },
 941         { "linksys"   },
 942         { "netgear"   },
 943         { "dlink"     },
 944         { "2wire"     },
 945         { "compaq"    },
 946         { "tsunami"   },
 947         { "comcomcom", "3com"     },
 948         { "3Com",      "3com"     },
 949         { "Symbol",    "symbol"   },
 950         { "Motorola",  "motorola" },
 951         { "Wireless" , "wireless" },
 952         { "WLAN",      "wlan"     },
 953         { }
 954 };
 955
 956 static char *build_group(const char *addr, const char *name,
 957                         const unsigned char *ssid, unsigned int ssid_len,
 958                                         const char *mode, const char *security)
 959 {
 960         GString *str;
 961         unsigned int i;
 962
 963         if (addr == NULL)
 964                 return NULL;
 965
 966         str = g_string_sized_new((ssid_len * 2) + 24);
 967         if (str == NULL)
 968                 return NULL;
 969
 970         if (ssid == NULL) {
 971                 g_string_append_printf(str, "hidden_%s", addr);
 972                 goto done;
 973         }
 974
 975         for (i = 0; special_ssid[i].name; i++) {
 976                 if (g_strcmp0(special_ssid[i].name, name) == 0) {
 977                         if (special_ssid[i].value == NULL)
 978                                 g_string_append_printf(str, "%s_%s",
 979                                                                 name, addr);
 980                         else
 981                                 g_string_append_printf(str, "%s_%s",
 982                                                 special_ssid[i].value, addr);
 983                         goto done;
 984                 }
 985         }
 986
 987         if (ssid_len > 0 && ssid[0] != '\0') {
 988                 for (i = 0; i < ssid_len; i++)
 989                         g_string_append_printf(str, "%02x", ssid[i]);
 990         } else
 991                 g_string_append_printf(str, "hidden_%s", addr);
 992
 993 done:
 994         g_string_append_printf(str, "_%s_%s", mode, security);
 995
 996         return g_string_free(str, FALSE);
 997 }
 998
 999 static void extract_addr(DBusMessageIter *value,
1000                                         struct supplicant_result *result)
1001 {
1002         DBusMessageIter array;
1003         struct ether_addr eth;
1004         unsigned char *addr;
1005         int addr_len;
1006
1007         dbus_message_iter_recurse(value, &array);
1008         dbus_message_iter_get_fixed_array(&array, &addr, &addr_len);
1009
1010         if (addr_len != 6)
1011                 return;
1012
1013         result->addr = g_try_malloc(addr_len);
1014         if (result->addr == NULL)
1015                 return;
1016
1017         memcpy(result->addr, addr, addr_len);
1018         result->addr_len = addr_len;
1019
1020         result->path = g_try_malloc0(13);
1021         if (result->path == NULL)
1022                 return;
1023
1024         memcpy(&eth, addr, sizeof(eth));
1025         snprintf(result->path, 13, "%02x%02x%02x%02x%02x%02x",
1026                                                 eth.ether_addr_octet[0],
1027                                                 eth.ether_addr_octet[1],
1028                                                 eth.ether_addr_octet[2],
1029                                                 eth.ether_addr_octet[3],
1030                                                 eth.ether_addr_octet[4],
1031                                                 eth.ether_addr_octet[5]);
1032 }
1033
1034 static void extract_ssid(DBusMessageIter *value,
1035                                         struct supplicant_result *result)
1036 {
1037         DBusMessageIter array;
1038         unsigned char *ssid;
1039         int ssid_len, i;
1040
1041         dbus_message_iter_recurse(value, &array);
1042         dbus_message_iter_get_fixed_array(&array, &ssid, &ssid_len);
1043
1044         if (ssid_len < 1)
1045                 return;
1046
1047         if (ssid[0] == '\0')
1048                 return;
1049
1050         result->ssid = g_try_malloc(ssid_len);
1051         if (result->ssid == NULL)
1052                 return;
1053
1054         memcpy(result->ssid, ssid, ssid_len);
1055         result->ssid_len = ssid_len;
1056
1057         result->name = g_try_malloc0(ssid_len + 1);
1058         if (result->name == NULL)
1059                 return;
1060
1061         for (i = 0; i < ssid_len; i++) {
1062                 if (g_ascii_isprint(ssid[i]))
1063                         result->name[i] = ssid[i];
1064                 else
1065                         result->name[i] = ' ';
1066         }
1067 }
1068
1069 static void extract_wpaie(DBusMessageIter *value,
1070                                         struct supplicant_result *result)
1071 {
1072         DBusMessageIter array;
1073         unsigned char *ie;
1074         int ie_len;
1075
1076         dbus_message_iter_recurse(value, &array);
1077         dbus_message_iter_get_fixed_array(&array, &ie, &ie_len);
1078
1079         if (ie_len > 0)
1080                 result->has_wpa = TRUE;
1081 }
1082
1083 static void extract_rsnie(DBusMessageIter *value,
1084                                         struct supplicant_result *result)
1085 {
1086         DBusMessageIter array;
1087         unsigned char *ie;
1088         int ie_len;
1089
1090         dbus_message_iter_recurse(value, &array);
1091         dbus_message_iter_get_fixed_array(&array, &ie, &ie_len);
1092
1093         if (ie_len > 0)
1094                 result->has_rsn = TRUE;
1095 }
1096
1097 static void extract_wpsie(DBusMessageIter *value,
1098                                         struct supplicant_result *result)
1099 {
1100         DBusMessageIter array;
1101         unsigned char *ie;
1102         int ie_len;
1103
1104         dbus_message_iter_recurse(value, &array);
1105         dbus_message_iter_get_fixed_array(&array, &ie, &ie_len);
1106
1107         if (ie_len > 0)
1108                 result->has_wps = TRUE;
1109 }
1110
1111 static void extract_capabilites(DBusMessageIter *value,
1112                                         struct supplicant_result *result)
1113 {
1114         dbus_message_iter_get_basic(value, &result->capabilities);
1115
1116         if (result->capabilities & IEEE80211_CAP_ESS)
1117                 result->adhoc = FALSE;
1118         else if (result->capabilities & IEEE80211_CAP_IBSS)
1119                 result->adhoc = TRUE;
1120
1121         if (result->capabilities & IEEE80211_CAP_PRIVACY)
1122                 result->has_wep = TRUE;
1123 }
1124
1125 static unsigned char calculate_strength(struct supplicant_task *task,
1126                                         struct supplicant_result *result)
1127 {
1128         if (task->range->max_qual.qual == 0) {
1129                 unsigned char strength;
1130
1131                 if (result->level > 0)
1132                         strength = 100 - result->level;
1133                 else
1134                         strength = 120 + result->level;
1135
1136                 if (strength > 100)
1137                         strength = 100;
1138
1139                 return strength;
1140         }
1141
1142         return (result->quality * 100) / task->range->max_qual.qual;
1143 }
1144
1145 static unsigned short calculate_channel(struct supplicant_result *result)
1146 {
1147         if (result->frequency < 0)
1148                 return 0;
1149
1150         return (result->frequency - 2407) / 5;
1151 }
1152
1153 static void get_properties(struct supplicant_task *task);
1154
1155 static void properties_reply(DBusPendingCall *call, void *user_data)
1156 {
1157         struct supplicant_task *task = user_data;
1158         struct supplicant_result result;
1159         struct connman_network *network;
1160         DBusMessage *reply;
1161         DBusMessageIter array, dict;
1162         unsigned char strength;
1163         unsigned short channel, frequency;
1164         const char *mode, *security;
1165         char *group = NULL;
1166
1167         DBG("task %p", task);
1168
1169         reply = dbus_pending_call_steal_reply(call);
1170         if (reply == NULL) {
1171                 get_properties(task);
1172                 return;
1173         }
1174
1175         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
1176                 dbus_message_unref(reply);
1177                 get_properties(task);
1178                 return;
1179         }
1180
1181         memset(&result, 0, sizeof(result));
1182         result.frequency = -1;
1183         result.quality = -1;
1184         result.level = 0;
1185         result.noise = 0;
1186
1187         dbus_message_iter_init(reply, &array);
1188
1189         dbus_message_iter_recurse(&array, &dict);
1190
1191         while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
1192                 DBusMessageIter entry, value;
1193                 const char *key;
1194
1195                 dbus_message_iter_recurse(&dict, &entry);
1196                 dbus_message_iter_get_basic(&entry, &key);
1197
1198                 dbus_message_iter_next(&entry);
1199
1200                 dbus_message_iter_recurse(&entry, &value);
1201
1202                 //type = dbus_message_iter_get_arg_type(&value);
1203                 //dbus_message_iter_get_basic(&value, &val);
1204
1205                 /*
1206                  * bssid        : a (97)
1207                  * ssid         : a (97)
1208                  * wpaie        : a (97)
1209                  * rsnie        : a (97)
1210                  * wpsie        : a (97)
1211                  * frequency    : i (105)
1212                  * capabilities : q (113)
1213                  * quality      : i (105)
1214                  * noise        : i (105)
1215                  * level        : i (105)
1216                  * maxrate      : i (105)
1217                  */
1218
1219                 if (g_str_equal(key, "bssid") == TRUE)
1220                         extract_addr(&value, &result);
1221                 else if (g_str_equal(key, "ssid") == TRUE)
1222                         extract_ssid(&value, &result);
1223                 else if (g_str_equal(key, "wpaie") == TRUE)
1224                         extract_wpaie(&value, &result);
1225                 else if (g_str_equal(key, "rsnie") == TRUE)
1226                         extract_rsnie(&value, &result);
1227                 else if (g_str_equal(key, "wpsie") == TRUE)
1228                         extract_wpsie(&value, &result);
1229                 else if (g_str_equal(key, "capabilities") == TRUE)
1230                         extract_capabilites(&value, &result);
1231                 else if (g_str_equal(key, "frequency") == TRUE)
1232                         dbus_message_iter_get_basic(&value, &result.frequency);
1233                 else if (g_str_equal(key, "quality") == TRUE)
1234                         dbus_message_iter_get_basic(&value, &result.quality);
1235                 else if (g_str_equal(key, "noise") == TRUE)
1236                         dbus_message_iter_get_basic(&value, &result.noise);
1237                 else if (g_str_equal(key, "level") == TRUE)
1238                         dbus_message_iter_get_basic(&value, &result.level);
1239                 else if (g_str_equal(key, "maxrate") == TRUE)
1240                         dbus_message_iter_get_basic(&value, &result.maxrate);
1241
1242                 dbus_message_iter_next(&dict);
1243         }
1244
1245         if (result.path == NULL)
1246                 goto done;
1247
1248         if (result.path[0] == '\0')
1249                 goto done;
1250
1251         if (result.frequency > 0 && result.frequency < 14)
1252                 result.frequency = 2407 + (5 * result.frequency);
1253         else if (result.frequency == 14)
1254                 result.frequency = 2484;
1255
1256         strength = calculate_strength(task, &result);
1257         channel  = calculate_channel(&result);
1258
1259         frequency = (result.frequency < 0) ? 0 : result.frequency;
1260
1261         if (result.has_rsn == TRUE)
1262                 security = "rsn";
1263         else if (result.has_wpa == TRUE)
1264                 security = "wpa";
1265         else if (result.has_wep == TRUE)
1266                 security = "wep";
1267         else
1268                 security = "none";
1269
1270         mode = (result.adhoc == TRUE) ? "adhoc" : "managed";
1271
1272         group = build_group(result.path, result.name,
1273                                         result.ssid, result.ssid_len,
1274                                                         mode, security);
1275
1276         network = connman_device_get_network(task->device, result.path);
1277         if (network == NULL) {
1278                 int index;
1279
1280                 network = connman_network_create(result.path,
1281                                                 CONNMAN_NETWORK_TYPE_WIFI);
1282                 if (network == NULL)
1283                         goto done;
1284
1285                 index = connman_device_get_index(task->device);
1286                 connman_network_set_index(network, index);
1287
1288                 connman_network_set_protocol(network,
1289                                                 CONNMAN_NETWORK_PROTOCOL_IP);
1290
1291                 connman_network_set_address(network, result.addr,
1292                                                         result.addr_len);
1293
1294                 if (connman_device_add_network(task->device, network) < 0) {
1295                         connman_network_unref(network);
1296                         goto done;
1297                 }
1298         }
1299
1300         if (result.name != NULL && result.name[0] != '\0')
1301                 connman_network_set_name(network, result.name);
1302
1303         connman_network_set_blob(network, "WiFi.SSID",
1304                                                 result.ssid, result.ssid_len);
1305
1306         connman_network_set_string(network, "WiFi.Mode", mode);
1307
1308         DBG("%s (%s %s) strength %d (%s)",
1309                                 result.name, mode, security, strength,
1310                                 (result.has_wps == TRUE) ? "WPS" : "no WPS");
1311
1312         connman_network_set_available(network, TRUE);
1313         connman_network_set_strength(network, strength);
1314
1315         connman_network_set_uint16(network, "Frequency", frequency);
1316         connman_network_set_uint16(network, "WiFi.Channel", channel);
1317         connman_network_set_string(network, "WiFi.Security", security);
1318
1319         if (result.ssid != NULL)
1320                 connman_network_set_group(network, group);
1321
1322 done:
1323         g_free(group);
1324
1325         g_free(result.path);
1326         g_free(result.addr);
1327         g_free(result.name);
1328         g_free(result.ssid);
1329
1330         dbus_message_unref(reply);
1331
1332         get_properties(task);
1333 }
1334
1335 static void get_properties(struct supplicant_task *task)
1336 {
1337         DBusMessage *message;
1338         char *path;
1339
1340         path = g_slist_nth_data(task->scan_results, 0);
1341         if (path == NULL)
1342                 goto noscan;
1343
1344         message = dbus_message_new_method_call(SUPPLICANT_NAME, path,
1345                                                 SUPPLICANT_INTF ".BSSID",
1346                                                                 "properties");
1347
1348         task->scan_results = g_slist_remove(task->scan_results, path);
1349         g_free(path);
1350
1351         if (message == NULL)
1352                 goto noscan;
1353
1354         dbus_message_set_auto_start(message, FALSE);
1355
1356         if (dbus_connection_send_with_reply(connection, message,
1357                                 &task->result_call, TIMEOUT) == FALSE) {
1358                 connman_error("Failed to get network properties");
1359                 dbus_message_unref(message);
1360                 goto noscan;
1361         }
1362
1363         if (task->result_call == NULL) {
1364                 connman_error("D-Bus connection not available");
1365                 dbus_message_unref(message);
1366                 goto noscan;
1367         }
1368
1369         dbus_pending_call_set_notify(task->result_call,
1370                                         properties_reply, task, NULL);
1371
1372         dbus_message_unref(message);
1373
1374         return;
1375
1376 noscan:
1377         task->result_call = NULL;
1378
1379         if (task->scanning == TRUE) {
1380                 connman_device_set_scanning(task->device, FALSE);
1381                 task->scanning = FALSE;
1382         }
1383 }
1384
1385 static void scan_results_reply(DBusPendingCall *call, void *user_data)
1386 {
1387         struct supplicant_task *task = user_data;
1388         DBusMessage *reply;
1389         DBusError error;
1390         char **results;
1391         int i, num_results;
1392
1393         DBG("task %p", task);
1394
1395         reply = dbus_pending_call_steal_reply(call);
1396         if (reply == NULL)
1397                 goto noscan;
1398
1399         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR)
1400                 goto done;
1401
1402         dbus_error_init(&error);
1403
1404         if (dbus_message_get_args(reply, &error,
1405                                 DBUS_TYPE_ARRAY, DBUS_TYPE_OBJECT_PATH,
1406                                                 &results, &num_results,
1407                                                 DBUS_TYPE_INVALID) == FALSE) {
1408                 if (dbus_error_is_set(&error) == TRUE) {
1409                         connman_error("%s", error.message);
1410                         dbus_error_free(&error);
1411                 } else
1412                         connman_error("Wrong arguments for scan result");
1413                 goto done;
1414         }
1415
1416         if (num_results == 0)
1417                 goto done;
1418
1419         for (i = 0; i < num_results; i++) {
1420                 char *path = g_strdup(results[i]);
1421                 if (path == NULL)
1422                         continue;
1423
1424                 task->scan_results = g_slist_append(task->scan_results, path);
1425         }
1426
1427         g_strfreev(results);
1428
1429         dbus_message_unref(reply);
1430
1431         get_properties(task);
1432
1433         return;
1434
1435 done:
1436         dbus_message_unref(reply);
1437
1438 noscan:
1439         task->result_call = NULL;
1440
1441         if (task->scanning == TRUE) {
1442                 connman_device_set_scanning(task->device, FALSE);
1443                 task->scanning = FALSE;
1444         }
1445 }
1446
1447 static void scan_results_available(struct supplicant_task *task)
1448 {
1449         DBusMessage *message;
1450
1451         DBG("task %p", task);
1452
1453         if (task->result_call != NULL)
1454                 return;
1455
1456         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
1457                                                 SUPPLICANT_INTF ".Interface",
1458                                                         "scanResults");
1459         if (message == NULL)
1460                 return;
1461
1462         dbus_message_set_auto_start(message, FALSE);
1463
1464         if (dbus_connection_send_with_reply(connection, message,
1465                                 &task->result_call, TIMEOUT) == FALSE) {
1466                 connman_error("Failed to request scan result");
1467                 goto done;
1468         }
1469
1470         if (task->result_call == NULL) {
1471                 connman_error("D-Bus connection not available");
1472                 goto done;
1473         }
1474
1475         if (task->scanning == TRUE)
1476                 connman_device_set_scanning(task->device, TRUE);
1477
1478         dbus_pending_call_set_notify(task->result_call,
1479                                         scan_results_reply, task, NULL);
1480
1481 done:
1482         dbus_message_unref(message);
1483 }
1484
1485 static enum supplicant_state string2state(const char *state)
1486 {
1487         if (g_str_equal(state, "INACTIVE") == TRUE)
1488                 return WPA_INACTIVE;
1489         else if (g_str_equal(state, "SCANNING") == TRUE)
1490                 return WPA_SCANNING;
1491         else if (g_str_equal(state, "ASSOCIATING") == TRUE)
1492                 return WPA_ASSOCIATING;
1493         else if (g_str_equal(state, "ASSOCIATED") == TRUE)
1494                 return WPA_ASSOCIATED;
1495         else if (g_str_equal(state, "GROUP_HANDSHAKE") == TRUE)
1496                 return WPA_GROUP_HANDSHAKE;
1497         else if (g_str_equal(state, "4WAY_HANDSHAKE") == TRUE)
1498                 return WPA_4WAY_HANDSHAKE;
1499         else if (g_str_equal(state, "COMPLETED") == TRUE)
1500                 return WPA_COMPLETED;
1501         else if (g_str_equal(state, "DISCONNECTED") == TRUE)
1502                 return WPA_DISCONNECTED;
1503         else
1504                 return WPA_INVALID;
1505 }
1506
1507 static int task_connect(struct supplicant_task *task)
1508 {
1509         const char *address, *security, *passphrase;
1510         const void *ssid;
1511         unsigned int ssid_len;
1512         int err;
1513
1514         connman_inet_ifup(task->ifindex);
1515
1516         address = connman_network_get_string(task->network, "Address");
1517         security = connman_network_get_string(task->network, "WiFi.Security");
1518         passphrase = connman_network_get_string(task->network, "WiFi.Passphrase");
1519
1520         ssid = connman_network_get_blob(task->network, "WiFi.SSID", &ssid_len);
1521
1522         DBG("address %s security %s", address, security);
1523
1524         if (security == NULL && passphrase == NULL)
1525                 return -EINVAL;
1526
1527         if (g_str_equal(security, "none") == FALSE && passphrase == NULL)
1528                 return -EINVAL;
1529
1530         remove_network(task);
1531
1532         set_ap_scan(task);
1533
1534         add_network(task);
1535
1536         set_network(task, ssid, ssid_len, address, security, passphrase);
1537
1538         err = select_network(task);
1539         if (err < 0)
1540                 return err;
1541
1542         return -EINPROGRESS;
1543 }
1544
1545 static void scanning(struct supplicant_task *task, DBusMessage *msg)
1546 {
1547         DBusError error;
1548         dbus_bool_t scanning;
1549
1550         dbus_error_init(&error);
1551
1552         if (dbus_message_get_args(msg, &error, DBUS_TYPE_BOOLEAN, &scanning,
1553                                                 DBUS_TYPE_INVALID) == FALSE) {
1554                 if (dbus_error_is_set(&error) == TRUE) {
1555                         connman_error("%s", error.message);
1556                         dbus_error_free(&error);
1557                 } else
1558                         connman_error("Wrong arguments for scanning");
1559                 return;
1560         }
1561
1562         connman_info("%s scanning %s", task->ifname,
1563                                 scanning == TRUE ? "started" : "finished");
1564 }
1565
1566 static void state_change(struct supplicant_task *task, DBusMessage *msg)
1567 {
1568         DBusError error;
1569         const char *newstate, *oldstate;
1570         unsigned char bssid[ETH_ALEN];
1571         unsigned int bssid_len;
1572         enum supplicant_state state, prevstate;
1573
1574         dbus_error_init(&error);
1575
1576         if (dbus_message_get_args(msg, &error, DBUS_TYPE_STRING, &newstate,
1577                                                 DBUS_TYPE_STRING, &oldstate,
1578                                                 DBUS_TYPE_INVALID) == FALSE) {
1579                 if (dbus_error_is_set(&error) == TRUE) {
1580                         connman_error("%s", error.message);
1581                         dbus_error_free(&error);
1582                 } else
1583                         connman_error("Wrong arguments for state change");
1584                 return;
1585         }
1586
1587         DBG("state %s ==> %s", oldstate, newstate);
1588
1589         connman_info("%s %s%s", task->ifname, newstate,
1590                                 task->scanning == TRUE ? " (scanning)" : "");
1591
1592         state = string2state(newstate);
1593         if (state == WPA_INVALID)
1594                 return;
1595
1596         if (task->scanning == TRUE && state != WPA_SCANNING) {
1597                 connman_device_cleanup_scanning(task->device);
1598                 task->scanning = FALSE;
1599         }
1600
1601         prevstate = task->state;
1602         task->state = state;
1603
1604         if (task->network == NULL)
1605                 return;
1606
1607         switch (task->state) {
1608         case WPA_COMPLETED:
1609                 switch (prevstate) {
1610                 case WPA_ASSOCIATED:
1611                 case WPA_GROUP_HANDSHAKE:
1612                         break;
1613                 default:
1614                         goto badstate;
1615                 }
1616
1617                 /* reset scan trigger and schedule background scan */
1618                 connman_device_schedule_scan(task->device);
1619
1620                 if (get_bssid(task->device, bssid, &bssid_len) == 0)
1621                         connman_network_set_address(task->network,
1622                                                         bssid, bssid_len);
1623
1624                 /* carrier on */
1625                 connman_network_set_connected(task->network, TRUE);
1626                 break;
1627
1628         case WPA_DISCONNECTED:
1629                 remove_network(task);
1630
1631                 /* carrier off */
1632                 connman_network_set_connected(task->network, FALSE);
1633
1634                 if (task->disconnecting == TRUE) {
1635                         connman_network_unref(task->network);
1636                         task->disconnecting = FALSE;
1637
1638                         if (task->pending_network != NULL) {
1639                                 task->network = task->pending_network;
1640                                 task->pending_network = NULL;
1641                                 task_connect(task);
1642                         } else
1643                                 task->network = NULL;
1644                 }
1645                 break;
1646
1647         case WPA_ASSOCIATING:
1648                 switch (prevstate) {
1649                 case WPA_COMPLETED:
1650                         break;
1651                 case WPA_SCANNING:
1652                         connman_network_set_associating(task->network, TRUE);
1653                         break;
1654                 default:
1655                         goto badstate;
1656                 }
1657                 break;
1658
1659         case WPA_INACTIVE:
1660                 switch (prevstate) {
1661                 case WPA_SCANNING:
1662                 case WPA_DISCONNECTED:
1663                         break;
1664                 default:
1665                         goto badstate;
1666                 }
1667
1668                 connman_network_set_connected(task->network, FALSE);
1669
1670                 if (task->disconnecting == TRUE) {
1671                         connman_network_unref(task->network);
1672                         task->disconnecting = FALSE;
1673
1674                         if (task->pending_network != NULL) {
1675                                 task->network = task->pending_network;
1676                                 task->pending_network = NULL;
1677                                 task_connect(task);
1678                         } else
1679                                 task->network = NULL;
1680                 }
1681                 break;
1682
1683         default:
1684                 connman_network_set_associating(task->network, FALSE);
1685                 break;
1686         }
1687
1688         return;
1689
1690 badstate:
1691         connman_error("%s invalid state change %s -> %s", task->ifname,
1692                                                         oldstate, newstate);
1693 }
1694
1695 static DBusHandlerResult supplicant_filter(DBusConnection *conn,
1696                                                 DBusMessage *msg, void *data)
1697 {
1698         struct supplicant_task *task;
1699         const char *member, *path;
1700
1701         if (dbus_message_has_interface(msg,
1702                                 SUPPLICANT_INTF ".Interface") == FALSE)
1703                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1704
1705         member = dbus_message_get_member(msg);
1706         if (member == NULL)
1707                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1708
1709         path = dbus_message_get_path(msg);
1710         if (path == NULL)
1711                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1712
1713         task = find_task_by_path(path);
1714         if (task == NULL)
1715                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1716
1717         DBG("task %p member %s", task, member);
1718
1719         if (g_str_equal(member, "ScanResultsAvailable") == TRUE)
1720                 scan_results_available(task);
1721         else if (g_str_equal(member, "Scanning") == TRUE)
1722                 scanning(task, msg);
1723         else if (g_str_equal(member, "StateChange") == TRUE)
1724                 state_change(task, msg);
1725
1726         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1727 }
1728
1729 int supplicant_start(struct connman_device *device)
1730 {
1731         struct supplicant_task *task;
1732         int err;
1733
1734         DBG("device %p", device);
1735
1736         task = g_try_new0(struct supplicant_task, 1);
1737         if (task == NULL)
1738                 return -ENOMEM;
1739
1740         task->ifindex = connman_device_get_index(device);
1741         task->ifname = connman_inet_ifname(task->ifindex);
1742
1743         if (task->ifname == NULL) {
1744                 err = -ENOMEM;
1745                 goto failed;
1746         }
1747
1748         task->mac80211 = connman_inet_is_mac80211(task->ifindex);
1749         if (task->mac80211 == FALSE)
1750                 connman_warn("Enabling quirks for unsupported driver");
1751
1752         task->range = g_try_malloc0(sizeof(struct iw_range));
1753         if (task->range == NULL) {
1754                 err = -ENOMEM;
1755                 goto failed;
1756         }
1757
1758         err = get_range(task);
1759         if (err < 0)
1760                 goto failed;
1761
1762         task->device = connman_device_ref(device);
1763
1764         task->created = FALSE;
1765         task->scanning = FALSE;
1766         task->state = WPA_INVALID;
1767         task->disconnecting = FALSE;
1768         task->pending_network = NULL;
1769
1770         task_list = g_slist_append(task_list, task);
1771
1772         return create_interface(task);
1773
1774 failed:
1775         g_free(task->range);
1776         g_free(task->ifname);
1777         g_free(task);
1778
1779         return err;
1780 }
1781
1782 int supplicant_stop(struct connman_device *device)
1783 {
1784         int index = connman_device_get_index(device);
1785         struct supplicant_task *task;
1786
1787         DBG("device %p", device);
1788
1789         task = find_task_by_index(index);
1790         if (task == NULL)
1791                 return -ENODEV;
1792
1793         g_free(task->range);
1794
1795         task_list = g_slist_remove(task_list, task);
1796
1797         if (task->scan_call != NULL) {
1798                 dbus_pending_call_cancel(task->scan_call);
1799                 task->scan_call = NULL;
1800         }
1801
1802         if (task->result_call != NULL) {
1803                 dbus_pending_call_cancel(task->result_call);
1804                 task->result_call = NULL;
1805         }
1806
1807         if (task->scanning == TRUE)
1808                 connman_device_set_scanning(task->device, FALSE);
1809
1810         remove_network(task);
1811
1812         disconnect_network(task);
1813
1814         return remove_interface(task);
1815 }
1816
1817 int supplicant_scan(struct connman_device *device)
1818 {
1819         int index = connman_device_get_index(device);
1820         struct supplicant_task *task;
1821         int err;
1822
1823         DBG("device %p", device);
1824
1825         task = find_task_by_index(index);
1826         if (task == NULL)
1827                 return -ENODEV;
1828
1829         switch (task->state) {
1830         case WPA_SCANNING:
1831                 return -EALREADY;
1832         case WPA_ASSOCIATING:
1833         case WPA_ASSOCIATED:
1834         case WPA_4WAY_HANDSHAKE:
1835         case WPA_GROUP_HANDSHAKE:
1836                 return -EBUSY;
1837         default:
1838                 break;
1839         }
1840
1841         task->scanning = TRUE;
1842
1843         err = initiate_scan(task);
1844         if (err < 0) {
1845                 if (err == -EINPROGRESS)
1846                         return 0;
1847
1848                 task->scanning = FALSE;
1849                 return err;
1850         }
1851
1852         connman_device_set_scanning(task->device, TRUE);
1853
1854         return 0;
1855 }
1856
1857 int supplicant_connect(struct connman_network *network)
1858 {
1859         struct supplicant_task *task;
1860         int index;
1861
1862         DBG("network %p", network);
1863
1864         index = connman_network_get_index(network);
1865
1866         task = find_task_by_index(index);
1867         if (task == NULL)
1868                 return -ENODEV;
1869
1870         if (task->disconnecting == TRUE)
1871                 task->pending_network = connman_network_ref(network);
1872         else {
1873                 task->network = connman_network_ref(network);
1874                 return task_connect(task);
1875         }
1876
1877         return -EINPROGRESS;
1878 }
1879
1880 int supplicant_disconnect(struct connman_network *network)
1881 {
1882         struct supplicant_task *task;
1883         int index;
1884
1885         DBG("network %p", network);
1886
1887         index = connman_network_get_index(network);
1888
1889         task = find_task_by_index(index);
1890         if (task == NULL)
1891                 return -ENODEV;
1892
1893         if (task->disconnecting == TRUE)
1894                 return -EALREADY;
1895
1896         remove_network(task);
1897
1898         disconnect_network(task);
1899
1900         task->disconnecting = TRUE;
1901
1902         return 0;
1903 }
1904
1905 static void supplicant_activate(DBusConnection *conn)
1906 {
1907         DBusMessage *message;
1908
1909         DBG("conn %p", conn);
1910
1911         message = dbus_message_new_method_call(SUPPLICANT_NAME, "/",
1912                                 DBUS_INTERFACE_INTROSPECTABLE, "Introspect");
1913         if (message == NULL)
1914                 return;
1915
1916         dbus_message_set_no_reply(message, TRUE);
1917
1918         dbus_connection_send(conn, message, NULL);
1919
1920         dbus_message_unref(message);
1921 }
1922
1923 static GSList *driver_list = NULL;
1924
1925 static void supplicant_probe(DBusConnection *conn, void *user_data)
1926 {
1927         GSList *list;
1928
1929         DBG("conn %p", conn);
1930
1931         for (list = driver_list; list; list = list->next) {
1932                 struct supplicant_driver *driver = list->data;
1933
1934                 DBG("driver %p name %s", driver, driver->name);
1935
1936                 if (driver->probe)
1937                         driver->probe();
1938         }
1939 }
1940
1941 static void supplicant_remove(DBusConnection *conn, void *user_data)
1942 {
1943         GSList *list;
1944
1945         DBG("conn %p", conn);
1946
1947         for (list = driver_list; list; list = list->next) {
1948                 struct supplicant_driver *driver = list->data;
1949
1950                 DBG("driver %p name %s", driver, driver->name);
1951
1952                 if (driver->remove)
1953                         driver->remove();
1954         }
1955 }
1956
1957 static const char *supplicant_rule = "type=signal,"
1958                                 "interface=" SUPPLICANT_INTF ".Interface";
1959 static guint watch;
1960
1961 static int supplicant_create(void)
1962 {
1963         if (g_slist_length(driver_list) > 0)
1964                 return 0;
1965
1966         connection = connman_dbus_get_connection();
1967         if (connection == NULL)
1968                 return -EIO;
1969
1970         DBG("connection %p", connection);
1971
1972         if (dbus_connection_add_filter(connection,
1973                                 supplicant_filter, NULL, NULL) == FALSE) {
1974                 connection = connman_dbus_get_connection();
1975                 return -EIO;
1976         }
1977
1978         dbus_bus_add_match(connection, supplicant_rule, NULL);
1979         dbus_connection_flush(connection);
1980
1981         watch = g_dbus_add_service_watch(connection, SUPPLICANT_NAME,
1982                         supplicant_probe, supplicant_remove, NULL, NULL);
1983
1984         return 0;
1985 }
1986
1987 static void supplicant_destroy(void)
1988 {
1989         if (g_slist_length(driver_list) > 0)
1990                 return;
1991
1992         DBG("connection %p", connection);
1993
1994         if (watch > 0)
1995                 g_dbus_remove_watch(connection, watch);
1996
1997         dbus_bus_remove_match(connection, supplicant_rule, NULL);
1998         dbus_connection_flush(connection);
1999
2000         dbus_connection_remove_filter(connection, supplicant_filter, NULL);
2001
2002         dbus_connection_unref(connection);
2003         connection = NULL;
2004 }
2005
2006 int supplicant_register(struct supplicant_driver *driver)
2007 {
2008         int err;
2009
2010         DBG("driver %p name %s", driver, driver->name);
2011
2012         err = supplicant_create();
2013         if (err < 0)
2014                 return err;
2015
2016         driver_list = g_slist_append(driver_list, driver);
2017
2018         supplicant_activate(connection);
2019
2020         return 0;
2021 }
2022
2023 void supplicant_unregister(struct supplicant_driver *driver)
2024 {
2025         DBG("driver %p name %s", driver, driver->name);
2026
2027         supplicant_remove(connection, NULL);
2028
2029         driver_list = g_slist_remove(driver_list, driver);
2030
2031         supplicant_destroy();
2032 }