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