git.maemo.org Git - connman/blob - 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 <errno.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <net/ethernet.h>
  31
  32 #include <gdbus.h>
  33
  34 #define CONNMAN_API_SUBJECT_TO_CHANGE
  35 #include <connman/device.h>
  36 #include <connman/dbus.h>
  37 #include <connman/log.h>
  38
  39 #include "inet.h"
  40 #include "supplicant.h"
  41
  42 #define TIMEOUT 5000
  43
  44 #define IEEE80211_CAP_ESS       0x0001
  45 #define IEEE80211_CAP_IBSS      0x0002
  46 #define IEEE80211_CAP_PRIVACY   0x0010
  47
  48 #define SUPPLICANT_NAME  "fi.epitest.hostap.WPASupplicant"
  49 #define SUPPLICANT_INTF  "fi.epitest.hostap.WPASupplicant"
  50 #define SUPPLICANT_PATH  "/fi/epitest/hostap/WPASupplicant"
  51
  52 /* Taken from "WPA Supplicant - Common definitions" */
  53 enum supplicant_state {
  54         /**
  55          * WPA_DISCONNECTED - Disconnected state
  56          *
  57          * This state indicates that client is not associated, but is likely to
  58          * start looking for an access point. This state is entered when a
  59          * connection is lost.
  60          */
  61         WPA_DISCONNECTED,
  62
  63         /**
  64          * WPA_INACTIVE - Inactive state (wpa_supplicant disabled)
  65          *
  66          * This state is entered if there are no enabled networks in the
  67          * configuration. wpa_supplicant is not trying to associate with a new
  68          * network and external interaction (e.g., ctrl_iface call to add or
  69          * enable a network) is needed to start association.
  70          */
  71         WPA_INACTIVE,
  72
  73         /**
  74          * WPA_SCANNING - Scanning for a network
  75          *
  76          * This state is entered when wpa_supplicant starts scanning for a
  77          * network.
  78          */
  79         WPA_SCANNING,
  80
  81         /**
  82          * WPA_ASSOCIATING - Trying to associate with a BSS/SSID
  83          *
  84          * This state is entered when wpa_supplicant has found a suitable BSS
  85          * to associate with and the driver is configured to try to associate
  86          * with this BSS in ap_scan=1 mode. When using ap_scan=2 mode, this
  87          * state is entered when the driver is configured to try to associate
  88          * with a network using the configured SSID and security policy.
  89          */
  90         WPA_ASSOCIATING,
  91
  92         /**
  93          * WPA_ASSOCIATED - Association completed
  94          *
  95          * This state is entered when the driver reports that association has
  96          * been successfully completed with an AP. If IEEE 802.1X is used
  97          * (with or without WPA/WPA2), wpa_supplicant remains in this state
  98          * until the IEEE 802.1X/EAPOL authentication has been completed.
  99          */
 100         WPA_ASSOCIATED,
 101
 102         /**
 103          * WPA_4WAY_HANDSHAKE - WPA 4-Way Key Handshake in progress
 104          *
 105          * This state is entered when WPA/WPA2 4-Way Handshake is started. In
 106          * case of WPA-PSK, this happens when receiving the first EAPOL-Key
 107          * frame after association. In case of WPA-EAP, this state is entered
 108          * when the IEEE 802.1X/EAPOL authentication has been completed.
 109          */
 110         WPA_4WAY_HANDSHAKE,
 111
 112         /**
 113          * WPA_GROUP_HANDSHAKE - WPA Group Key Handshake in progress
 114          *
 115          * This state is entered when 4-Way Key Handshake has been completed
 116          * (i.e., when the supplicant sends out message 4/4) and when Group
 117          * Key rekeying is started by the AP (i.e., when supplicant receives
 118          * message 1/2).
 119          */
 120         WPA_GROUP_HANDSHAKE,
 121
 122         /**
 123          * WPA_COMPLETED - All authentication completed
 124          *
 125          * This state is entered when the full authentication process is
 126          * completed. In case of WPA2, this happens when the 4-Way Handshake is
 127          * successfully completed. With WPA, this state is entered after the
 128          * Group Key Handshake; with IEEE 802.1X (non-WPA) connection is
 129          * completed after dynamic keys are received (or if not used, after
 130          * the EAP authentication has been completed). With static WEP keys and
 131          * plaintext connections, this state is entered when an association
 132          * has been completed.
 133          *
 134          * This state indicates that the supplicant has completed its
 135          * processing for the association phase and that data connection is
 136          * fully configured.
 137          */
 138         WPA_COMPLETED,
 139
 140         /**
 141          * WPA_INVALID - Invalid state (parsing error)
 142          *
 143          * This state is returned if the string input is invalid. It is not
 144          * an official wpa_supplicant state.
 145          */
 146         WPA_INVALID,
 147 };
 148
 149 struct supplicant_result {
 150         char *path;
 151         char *name;
 152         char *addr;
 153         unsigned char *ssid;
 154         unsigned int ssid_len;
 155         dbus_uint16_t capabilities;
 156         gboolean adhoc;
 157         gboolean has_wep;
 158         gboolean has_wpa;
 159         gboolean has_rsn;
 160         gboolean has_wps;
 161         dbus_int32_t quality;
 162         dbus_int32_t noise;
 163         dbus_int32_t level;
 164         dbus_int32_t maxrate;
 165 };
 166
 167 struct supplicant_task {
 168         int ifindex;
 169         char *ifname;
 170         struct connman_device *device;
 171         struct connman_network *network;
 172         char *path;
 173         char *netpath;
 174         gboolean created;
 175         enum supplicant_state state;
 176         gboolean noscan;
 177         GSList *scan_results;
 178 };
 179
 180 static GSList *task_list = NULL;
 181
 182 static DBusConnection *connection;
 183
 184 static void free_task(struct supplicant_task *task)
 185 {
 186         DBG("task %p", task);
 187
 188         g_free(task->ifname);
 189         g_free(task->path);
 190         g_free(task);
 191 }
 192
 193 static struct supplicant_task *find_task_by_index(int index)
 194 {
 195         GSList *list;
 196
 197         for (list = task_list; list; list = list->next) {
 198                 struct supplicant_task *task = list->data;
 199
 200                 if (task->ifindex == index)
 201                         return task;
 202         }
 203
 204         return NULL;
 205 }
 206
 207 static struct supplicant_task *find_task_by_path(const char *path)
 208 {
 209         GSList *list;
 210
 211         for (list = task_list; list; list = list->next) {
 212                 struct supplicant_task *task = list->data;
 213
 214                 if (g_str_equal(task->path, path) == TRUE)
 215                         return task;
 216         }
 217
 218         return NULL;
 219 }
 220
 221 static void add_interface_reply(DBusPendingCall *call, void *user_data)
 222 {
 223         struct supplicant_task *task = user_data;
 224         DBusMessage *reply;
 225         DBusError error;
 226         const char *path;
 227
 228         DBG("task %p", task);
 229
 230         reply = dbus_pending_call_steal_reply(call);
 231         if (reply == NULL)
 232                 return;
 233
 234         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR)
 235                 goto done;
 236
 237         dbus_error_init(&error);
 238
 239         if (dbus_message_get_args(reply, &error, DBUS_TYPE_OBJECT_PATH, &path,
 240                                                 DBUS_TYPE_INVALID) == FALSE) {
 241                 if (dbus_error_is_set(&error) == TRUE) {
 242                         connman_error("%s", error.message);
 243                         dbus_error_free(&error);
 244                 } else
 245                         connman_error("Wrong arguments for add interface");
 246                 goto done;
 247         }
 248
 249         DBG("path %s", path);
 250
 251         task->path = g_strdup(path);
 252         task->created = TRUE;
 253
 254         connman_device_set_powered(task->device, TRUE);
 255
 256 done:
 257         dbus_message_unref(reply);
 258 }
 259
 260 static int add_interface(struct supplicant_task *task)
 261 {
 262         DBusMessage *message;
 263         DBusPendingCall *call;
 264
 265         DBG("task %p", task);
 266
 267         message = dbus_message_new_method_call(SUPPLICANT_NAME, SUPPLICANT_PATH,
 268                                         SUPPLICANT_INTF, "addInterface");
 269         if (message == NULL)
 270                 return -ENOMEM;
 271
 272         dbus_message_append_args(message, DBUS_TYPE_STRING, &task->ifname,
 273                                                         DBUS_TYPE_INVALID);
 274
 275         if (dbus_connection_send_with_reply(connection, message,
 276                                                 &call, TIMEOUT) == FALSE) {
 277                 connman_error("Failed to add interface");
 278                 dbus_message_unref(message);
 279                 return -EIO;
 280         }
 281
 282         dbus_pending_call_set_notify(call, add_interface_reply, task, NULL);
 283
 284         dbus_message_unref(message);
 285
 286         return -EINPROGRESS;
 287 }
 288
 289 static void get_interface_reply(DBusPendingCall *call, void *user_data)
 290 {
 291         struct supplicant_task *task = user_data;
 292         DBusMessage *reply;
 293         DBusError error;
 294         const char *path;
 295
 296         DBG("task %p", task);
 297
 298         reply = dbus_pending_call_steal_reply(call);
 299         if (reply == NULL)
 300                 return;
 301
 302         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
 303                 add_interface(task);
 304                 goto done;
 305         }
 306
 307         dbus_error_init(&error);
 308
 309         if (dbus_message_get_args(reply, &error, DBUS_TYPE_OBJECT_PATH, &path,
 310                                                 DBUS_TYPE_INVALID) == FALSE) {
 311                 if (dbus_error_is_set(&error) == TRUE) {
 312                         connman_error("%s", error.message);
 313                         dbus_error_free(&error);
 314                 } else
 315                         connman_error("Wrong arguments for get interface");
 316                 goto done;
 317         }
 318
 319         DBG("path %s", path);
 320
 321         task->path = g_strdup(path);
 322         task->created = FALSE;
 323
 324         connman_device_set_powered(task->device, TRUE);
 325
 326 done:
 327         dbus_message_unref(reply);
 328 }
 329
 330 static int create_interface(struct supplicant_task *task)
 331 {
 332         DBusMessage *message;
 333         DBusPendingCall *call;
 334
 335         DBG("task %p", task);
 336
 337         message = dbus_message_new_method_call(SUPPLICANT_NAME, SUPPLICANT_PATH,
 338                                         SUPPLICANT_INTF, "getInterface");
 339         if (message == NULL)
 340                 return -ENOMEM;
 341
 342         dbus_message_append_args(message, DBUS_TYPE_STRING, &task->ifname,
 343                                                         DBUS_TYPE_INVALID);
 344
 345         if (dbus_connection_send_with_reply(connection, message,
 346                                                 &call, TIMEOUT) == FALSE) {
 347                 connman_error("Failed to get interface");
 348                 dbus_message_unref(message);
 349                 return -EIO;
 350         }
 351
 352         dbus_pending_call_set_notify(call, get_interface_reply, task, NULL);
 353
 354         dbus_message_unref(message);
 355
 356         return -EINPROGRESS;
 357 }
 358
 359 static void remove_interface_reply(DBusPendingCall *call, void *user_data)
 360 {
 361         struct supplicant_task *task = user_data;
 362         DBusMessage *reply;
 363
 364         DBG("task %p", task);
 365
 366         reply = dbus_pending_call_steal_reply(call);
 367
 368         connman_device_set_powered(task->device, FALSE);
 369
 370         connman_device_unref(task->device);
 371
 372         free_task(task);
 373
 374         dbus_message_unref(reply);
 375 }
 376
 377 static int remove_interface(struct supplicant_task *task)
 378 {
 379         DBusMessage *message;
 380         DBusPendingCall *call;
 381
 382         DBG("task %p", task);
 383
 384         if (task->created == FALSE) {
 385                 connman_device_set_powered(task->device, FALSE);
 386                 return 0;
 387         }
 388
 389         message = dbus_message_new_method_call(SUPPLICANT_NAME, SUPPLICANT_PATH,
 390                                         SUPPLICANT_INTF, "removeInterface");
 391         if (message == NULL)
 392                 return -ENOMEM;
 393
 394         dbus_message_append_args(message, DBUS_TYPE_OBJECT_PATH, &task->path,
 395                                                         DBUS_TYPE_INVALID);
 396
 397         if (dbus_connection_send_with_reply(connection, message,
 398                                                 &call, TIMEOUT) == FALSE) {
 399                 connman_error("Failed to remove interface");
 400                 dbus_message_unref(message);
 401                 return -EIO;
 402         }
 403
 404         dbus_pending_call_set_notify(call, remove_interface_reply, task, NULL);
 405
 406         dbus_message_unref(message);
 407
 408         return -EINPROGRESS;
 409 }
 410
 411 #if 0
 412 static int set_ap_scan(struct supplicant_task *task)
 413 {
 414         DBusMessage *message, *reply;
 415         DBusError error;
 416         guint32 ap_scan = 1;
 417
 418         DBG("task %p", task);
 419
 420         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 421                                 SUPPLICANT_INTF ".Interface", "setAPScan");
 422         if (message == NULL)
 423                 return -ENOMEM;
 424
 425         dbus_message_append_args(message, DBUS_TYPE_UINT32, &ap_scan,
 426                                                         DBUS_TYPE_INVALID);
 427
 428         dbus_error_init(&error);
 429
 430         reply = dbus_connection_send_with_reply_and_block(connection,
 431                                                         message, -1, &error);
 432         if (reply == NULL) {
 433                 if (dbus_error_is_set(&error) == TRUE) {
 434                         connman_error("%s", error.message);
 435                         dbus_error_free(&error);
 436                 } else
 437                         connman_error("Failed to set AP scan");
 438                 dbus_message_unref(message);
 439                 return -EIO;
 440         }
 441
 442         dbus_message_unref(message);
 443
 444         dbus_message_unref(reply);
 445
 446         return 0;
 447 }
 448 #endif
 449
 450 static int add_network(struct supplicant_task *task)
 451 {
 452         DBusMessage *message, *reply;
 453         DBusError error;
 454         const char *path;
 455
 456         DBG("task %p", task);
 457
 458         if (task->netpath != NULL)
 459                 return -EALREADY;
 460
 461         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 462                                 SUPPLICANT_INTF ".Interface", "addNetwork");
 463         if (message == NULL)
 464                 return -ENOMEM;
 465
 466         dbus_error_init(&error);
 467
 468         reply = dbus_connection_send_with_reply_and_block(connection,
 469                                                         message, -1, &error);
 470         if (reply == NULL) {
 471                 if (dbus_error_is_set(&error) == TRUE) {
 472                         connman_error("%s", error.message);
 473                         dbus_error_free(&error);
 474                 } else
 475                         connman_error("Failed to add network");
 476                 dbus_message_unref(message);
 477                 return -EIO;
 478         }
 479
 480         dbus_message_unref(message);
 481
 482         dbus_error_init(&error);
 483
 484         if (dbus_message_get_args(reply, &error, DBUS_TYPE_OBJECT_PATH, &path,
 485                                                 DBUS_TYPE_INVALID) == FALSE) {
 486                 if (dbus_error_is_set(&error) == TRUE) {
 487                         connman_error("%s", error.message);
 488                         dbus_error_free(&error);
 489                 } else
 490                         connman_error("Wrong arguments for network");
 491                 dbus_message_unref(reply);
 492                 return -EIO;
 493         }
 494
 495         DBG("path %s", path);
 496
 497         task->netpath = g_strdup(path);
 498
 499         dbus_message_unref(reply);
 500
 501         return 0;
 502 }
 503
 504 static int remove_network(struct supplicant_task *task)
 505 {
 506         DBusMessage *message, *reply;
 507         DBusError error;
 508
 509         DBG("task %p", task);
 510
 511         if (task->netpath == NULL)
 512                 return -EINVAL;
 513
 514         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 515                                 SUPPLICANT_INTF ".Interface", "removeNetwork");
 516         if (message == NULL)
 517                 return -ENOMEM;
 518
 519         dbus_message_append_args(message, DBUS_TYPE_OBJECT_PATH, &task->netpath,
 520                                                         DBUS_TYPE_INVALID);
 521
 522         dbus_error_init(&error);
 523
 524         reply = dbus_connection_send_with_reply_and_block(connection,
 525                                                         message, -1, &error);
 526         if (reply == NULL) {
 527                 if (dbus_error_is_set(&error) == TRUE) {
 528                         connman_error("%s", error.message);
 529                         dbus_error_free(&error);
 530                 } else
 531                         connman_error("Failed to remove network");
 532                 dbus_message_unref(message);
 533                 return -EIO;
 534         }
 535
 536         dbus_message_unref(message);
 537
 538         dbus_message_unref(reply);
 539
 540         g_free(task->netpath);
 541         task->netpath = NULL;
 542
 543         return 0;
 544 }
 545
 546 static int select_network(struct supplicant_task *task)
 547 {
 548         DBusMessage *message, *reply;
 549         DBusError error;
 550
 551         DBG("task %p", task);
 552
 553         if (task->netpath == NULL)
 554                 return -EINVAL;
 555
 556         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 557                                 SUPPLICANT_INTF ".Interface", "selectNetwork");
 558         if (message == NULL)
 559                 return -ENOMEM;
 560
 561         dbus_message_append_args(message, DBUS_TYPE_OBJECT_PATH, &task->netpath,
 562                                                         DBUS_TYPE_INVALID);
 563
 564         dbus_error_init(&error);
 565
 566         reply = dbus_connection_send_with_reply_and_block(connection,
 567                                                         message, -1, &error);
 568         if (reply == NULL) {
 569                 if (dbus_error_is_set(&error) == TRUE) {
 570                         connman_error("%s", error.message);
 571                         dbus_error_free(&error);
 572                 } else
 573                         connman_error("Failed to select network");
 574                 dbus_message_unref(message);
 575                 return -EIO;
 576         }
 577
 578         dbus_message_unref(message);
 579
 580         dbus_message_unref(reply);
 581
 582         return 0;
 583 }
 584
 585 static int enable_network(struct supplicant_task *task)
 586 {
 587         DBusMessage *message, *reply;
 588         DBusError error;
 589
 590         DBG("task %p", task);
 591
 592         if (task->netpath == NULL)
 593                 return -EINVAL;
 594
 595         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->netpath,
 596                                         SUPPLICANT_INTF ".Network", "enable");
 597         if (message == NULL)
 598                 return -ENOMEM;
 599
 600         dbus_error_init(&error);
 601
 602         reply = dbus_connection_send_with_reply_and_block(connection,
 603                                                         message, -1, &error);
 604         if (reply == NULL) {
 605                 if (dbus_error_is_set(&error) == TRUE) {
 606                         connman_error("%s", error.message);
 607                         dbus_error_free(&error);
 608                 } else
 609                         connman_error("Failed to enable network");
 610                 dbus_message_unref(message);
 611                 return -EIO;
 612         }
 613
 614         dbus_message_unref(message);
 615
 616         dbus_message_unref(reply);
 617
 618         return 0;
 619 }
 620
 621 static int disable_network(struct supplicant_task *task)
 622 {
 623         DBusMessage *message, *reply;
 624         DBusError error;
 625
 626         DBG("task %p", task);
 627
 628         if (task->netpath == NULL)
 629                 return -EINVAL;
 630
 631         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->netpath,
 632                                         SUPPLICANT_INTF ".Network", "disable");
 633         if (message == NULL)
 634                 return -ENOMEM;
 635
 636         dbus_error_init(&error);
 637
 638         reply = dbus_connection_send_with_reply_and_block(connection,
 639                                                         message, -1, &error);
 640         if (reply == NULL) {
 641                 if (dbus_error_is_set(&error) == TRUE) {
 642                         connman_error("%s", error.message);
 643                         dbus_error_free(&error);
 644                 } else
 645                         connman_error("Failed to disable network");
 646                 dbus_message_unref(message);
 647                 return -EIO;
 648         }
 649
 650         dbus_message_unref(message);
 651
 652         dbus_message_unref(reply);
 653
 654         return 0;
 655 }
 656
 657 static int set_network(struct supplicant_task *task,
 658                                 const unsigned char *network, int len,
 659                                 const char *security, const char *passphrase)
 660 {
 661         DBusMessage *message, *reply;
 662         DBusMessageIter array, dict;
 663         DBusError error;
 664         const char *scan = "1";
 665
 666         DBG("task %p", task);
 667
 668         if (task->netpath == NULL)
 669                 return -EINVAL;
 670
 671         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->netpath,
 672                                         SUPPLICANT_INTF ".Network", "set");
 673         if (message == NULL)
 674                 return -ENOMEM;
 675
 676         dbus_message_iter_init_append(message, &array);
 677
 678         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
 679                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 680                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 681                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 682
 683         connman_dbus_dict_append_variant(&dict, "scan_ssid",
 684                                                 DBUS_TYPE_STRING, &scan);
 685
 686         connman_dbus_dict_append_array(&dict, "ssid",
 687                                         DBUS_TYPE_BYTE, &network, len);
 688
 689         if (g_ascii_strcasecmp(security, "wpa") == 0 ||
 690                                 g_ascii_strcasecmp(security, "wpa2") == 0) {
 691                 const char *key_mgmt = "WPA-PSK";
 692                 connman_dbus_dict_append_variant(&dict, "key_mgmt",
 693                                                 DBUS_TYPE_STRING, &key_mgmt);
 694
 695                 if (passphrase && strlen(passphrase) > 0)
 696                         connman_dbus_dict_append_variant(&dict, "psk",
 697                                                 DBUS_TYPE_STRING, &passphrase);
 698         } else if (g_ascii_strcasecmp(security, "wep") == 0) {
 699                 const char *key_mgmt = "NONE", *index = "0";
 700                 connman_dbus_dict_append_variant(&dict, "key_mgmt",
 701                                                 DBUS_TYPE_STRING, &key_mgmt);
 702
 703                 if (passphrase) {
 704                         int size = strlen(passphrase);
 705                         if (size == 10 || size == 26) {
 706                                 unsigned char *key = malloc(13);
 707                                 char tmp[3];
 708                                 int i;
 709                                 memset(tmp, 0, sizeof(tmp));
 710                                 if (key == NULL)
 711                                         size = 0;
 712                                 for (i = 0; i < size / 2; i++) {
 713                                         memcpy(tmp, passphrase + (i * 2), 2);
 714                                         key[i] = (unsigned char) strtol(tmp,
 715                                                                 NULL, 16);
 716                                 }
 717                                 connman_dbus_dict_append_array(&dict,
 718                                                 "wep_key0", DBUS_TYPE_BYTE,
 719                                                         &key, size / 2);
 720                                 free(key);
 721                         } else
 722                                 connman_dbus_dict_append_variant(&dict,
 723                                                 "wep_key0", DBUS_TYPE_STRING,
 724                                                                 &passphrase);
 725                         connman_dbus_dict_append_variant(&dict, "wep_tx_keyidx",
 726                                                 DBUS_TYPE_STRING, &index);
 727                 }
 728         } else {
 729                 const char *key_mgmt = "NONE";
 730                 connman_dbus_dict_append_variant(&dict, "key_mgmt",
 731                                                 DBUS_TYPE_STRING, &key_mgmt);
 732         }
 733
 734         dbus_message_iter_close_container(&array, &dict);
 735
 736         dbus_error_init(&error);
 737
 738         reply = dbus_connection_send_with_reply_and_block(connection,
 739                                                         message, -1, &error);
 740         if (reply == NULL) {
 741                 if (dbus_error_is_set(&error) == TRUE) {
 742                         connman_error("%s", error.message);
 743                         dbus_error_free(&error);
 744                 } else
 745                         connman_error("Failed to set network options");
 746                 dbus_message_unref(message);
 747                 return -EIO;
 748         }
 749
 750         dbus_message_unref(message);
 751
 752         dbus_message_unref(reply);
 753
 754         return 0;
 755 }
 756
 757 static int initiate_scan(struct supplicant_task *task)
 758 {
 759         DBusMessage *message;
 760         DBusPendingCall *call;
 761
 762         DBG("task %p", task);
 763
 764         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 765                                         SUPPLICANT_INTF ".Interface", "scan");
 766         if (message == NULL)
 767                 return -ENOMEM;
 768
 769         if (dbus_connection_send_with_reply(connection, message,
 770                                                 &call, TIMEOUT) == FALSE) {
 771                 connman_error("Failed to initiate scan");
 772                 dbus_message_unref(message);
 773                 return -EIO;
 774         }
 775
 776         dbus_message_unref(message);
 777
 778         return 0;
 779 }
 780
 781 static void extract_addr(DBusMessageIter *value,
 782                                         struct supplicant_result *result)
 783 {
 784         DBusMessageIter array;
 785         struct ether_addr *eth;
 786         unsigned char *addr;
 787         int addr_len;
 788
 789         dbus_message_iter_recurse(value, &array);
 790         dbus_message_iter_get_fixed_array(&array, &addr, &addr_len);
 791
 792         if (addr_len != 6)
 793                 return;
 794
 795         eth = (void *) addr;
 796
 797         result->addr = g_try_malloc0(18);
 798         if (result->addr == NULL)
 799                 return;
 800
 801         snprintf(result->addr, 18, "%02X:%02X:%02X:%02X:%02X:%02X",
 802                                                 eth->ether_addr_octet[0],
 803                                                 eth->ether_addr_octet[1],
 804                                                 eth->ether_addr_octet[2],
 805                                                 eth->ether_addr_octet[3],
 806                                                 eth->ether_addr_octet[4],
 807                                                 eth->ether_addr_octet[5]);
 808
 809         result->path = g_try_malloc0(18);
 810         if (result->path == NULL)
 811                 return;
 812
 813         snprintf(result->path, 18, "%02X_%02X_%02X_%02X_%02X_%02X",
 814                                                 eth->ether_addr_octet[0],
 815                                                 eth->ether_addr_octet[1],
 816                                                 eth->ether_addr_octet[2],
 817                                                 eth->ether_addr_octet[3],
 818                                                 eth->ether_addr_octet[4],
 819                                                 eth->ether_addr_octet[5]);
 820 }
 821
 822 static void extract_ssid(DBusMessageIter *value,
 823                                         struct supplicant_result *result)
 824 {
 825         DBusMessageIter array;
 826         unsigned char *ssid;
 827         int ssid_len;
 828
 829         dbus_message_iter_recurse(value, &array);
 830         dbus_message_iter_get_fixed_array(&array, &ssid, &ssid_len);
 831
 832         if (ssid_len < 1)
 833                 return;
 834
 835         if (ssid[0] == '\0')
 836                 return;
 837
 838         result->ssid = g_try_malloc(ssid_len);
 839         if (result->ssid == NULL)
 840                 return;
 841
 842         memcpy(result->ssid, ssid, ssid_len);
 843         result->ssid_len = ssid_len;
 844
 845         result->name = g_try_malloc0(ssid_len + 1);
 846         if (result->name == NULL)
 847                 return;
 848
 849         memcpy(result->name, ssid, ssid_len);
 850 }
 851
 852 static void extract_wpaie(DBusMessageIter *value,
 853                                         struct supplicant_result *result)
 854 {
 855         DBusMessageIter array;
 856         unsigned char *ie;
 857         int ie_len;
 858
 859         dbus_message_iter_recurse(value, &array);
 860         dbus_message_iter_get_fixed_array(&array, &ie, &ie_len);
 861
 862         if (ie_len > 0)
 863                 result->has_wpa = TRUE;
 864 }
 865
 866 static void extract_rsnie(DBusMessageIter *value,
 867                                         struct supplicant_result *result)
 868 {
 869         DBusMessageIter array;
 870         unsigned char *ie;
 871         int ie_len;
 872
 873         dbus_message_iter_recurse(value, &array);
 874         dbus_message_iter_get_fixed_array(&array, &ie, &ie_len);
 875
 876         if (ie_len > 0)
 877                 result->has_rsn = TRUE;
 878 }
 879
 880 static void extract_wpsie(DBusMessageIter *value,
 881                                         struct supplicant_result *result)
 882 {
 883         DBusMessageIter array;
 884         unsigned char *ie;
 885         int ie_len;
 886
 887         dbus_message_iter_recurse(value, &array);
 888         dbus_message_iter_get_fixed_array(&array, &ie, &ie_len);
 889
 890         if (ie_len > 0)
 891                 result->has_wps = TRUE;
 892 }
 893
 894 static void extract_capabilites(DBusMessageIter *value,
 895                                         struct supplicant_result *result)
 896 {
 897         dbus_message_iter_get_basic(value, &result->capabilities);
 898
 899         if (result->capabilities & IEEE80211_CAP_ESS)
 900                 result->adhoc = FALSE;
 901         else if (result->capabilities & IEEE80211_CAP_IBSS)
 902                 result->adhoc = TRUE;
 903
 904         if (result->capabilities & IEEE80211_CAP_PRIVACY)
 905                 result->has_wep = TRUE;
 906 }
 907
 908 static void get_properties(struct supplicant_task *task);
 909
 910 static void properties_reply(DBusPendingCall *call, void *user_data)
 911 {
 912         struct supplicant_task *task = user_data;
 913         struct supplicant_result result;
 914         struct connman_network *network;
 915         DBusMessage *reply;
 916         DBusMessageIter array, dict;
 917         const char *mode, *security;
 918         unsigned char strength;
 919
 920         DBG("task %p", task);
 921
 922         reply = dbus_pending_call_steal_reply(call);
 923         if (reply == NULL) {
 924                 get_properties(task);
 925                 return;
 926         }
 927
 928         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
 929                 dbus_message_unref(reply);
 930                 get_properties(task);
 931                 return;
 932         }
 933
 934         memset(&result, 0, sizeof(result));
 935
 936         dbus_message_iter_init(reply, &array);
 937
 938         dbus_message_iter_recurse(&array, &dict);
 939
 940         while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
 941                 DBusMessageIter entry, value;
 942                 const char *key;
 943
 944                 dbus_message_iter_recurse(&dict, &entry);
 945                 dbus_message_iter_get_basic(&entry, &key);
 946
 947                 dbus_message_iter_next(&entry);
 948
 949                 dbus_message_iter_recurse(&entry, &value);
 950
 951                 //type = dbus_message_iter_get_arg_type(&value);
 952                 //dbus_message_iter_get_basic(&value, &val);
 953
 954                 /*
 955                  * bssid        : a (97)
 956                  * ssid         : a (97)
 957                  * wpaie        : a (97)
 958                  * rsnie        : a (97)
 959                  * wpsie        : a (97)
 960                  * frequency    : i (105)
 961                  * capabilities : q (113)
 962                  * quality      : i (105)
 963                  * noise        : i (105)
 964                  * level        : i (105)
 965                  * maxrate      : i (105)
 966                  */
 967
 968                 if (g_str_equal(key, "bssid") == TRUE)
 969                         extract_addr(&value, &result);
 970                 else if (g_str_equal(key, "ssid") == TRUE)
 971                         extract_ssid(&value, &result);
 972                 else if (g_str_equal(key, "wpaie") == TRUE)
 973                         extract_wpaie(&value, &result);
 974                 else if (g_str_equal(key, "rsnie") == TRUE)
 975                         extract_rsnie(&value, &result);
 976                 else if (g_str_equal(key, "wpsie") == TRUE)
 977                         extract_wpsie(&value, &result);
 978                 else if (g_str_equal(key, "capabilities") == TRUE)
 979                         extract_capabilites(&value, &result);
 980                 else if (g_str_equal(key, "quality") == TRUE)
 981                         dbus_message_iter_get_basic(&value, &result.quality);
 982                 else if (g_str_equal(key, "noise") == TRUE)
 983                         dbus_message_iter_get_basic(&value, &result.noise);
 984                 else if (g_str_equal(key, "level") == TRUE)
 985                         dbus_message_iter_get_basic(&value, &result.level);
 986                 else if (g_str_equal(key, "maxrate") == TRUE)
 987                         dbus_message_iter_get_basic(&value, &result.maxrate);
 988
 989                 dbus_message_iter_next(&dict);
 990         }
 991
 992         if (result.path == NULL)
 993                 goto done;
 994
 995         if (result.path[0] == '\0')
 996                 goto done;
 997
 998         strength = result.quality;
 999
1000         if (result.has_rsn == TRUE)
1001                 security = "wpa2";
1002         else if (result.has_wpa == TRUE)
1003                 security = "wpa";
1004         else if (result.has_wep == TRUE)
1005                 security = "wep";
1006         else
1007                 security = "none";
1008
1009         network = connman_device_get_network(task->device, result.path);
1010         if (network == NULL) {
1011                 int index;
1012
1013                 network = connman_network_create(result.path,
1014                                                 CONNMAN_NETWORK_TYPE_WIFI);
1015                 if (network == NULL)
1016                         goto done;
1017
1018                 index = connman_device_get_index(task->device);
1019                 connman_network_set_index(network, index);
1020
1021                 connman_network_set_protocol(network,
1022                                                 CONNMAN_NETWORK_PROTOCOL_IP);
1023
1024                 connman_network_set_string(network, "Address", result.addr);
1025
1026                 if (connman_device_add_network(task->device, network) < 0) {
1027                         connman_network_unref(network);
1028                         goto done;
1029                 }
1030         }
1031
1032         connman_network_set_string(network, "Name", result.name);
1033
1034         connman_network_set_blob(network, "WiFi.SSID",
1035                                                 result.ssid, result.ssid_len);
1036
1037         mode = (result.adhoc == TRUE) ? "adhoc" : "managed";
1038         connman_network_set_string(network, "WiFi.Mode", mode);
1039
1040         DBG("%s (%s %s) strength %d (%s)",
1041                         result.name, mode, security, strength,
1042                         (result.has_wps == TRUE) ? "WPS" : "no WPS");
1043
1044         connman_network_set_available(network, TRUE);
1045         connman_network_set_uint8(network, "Strength", strength);
1046
1047         connman_network_set_string(network, "WiFi.Security", security);
1048
1049 done:
1050         g_free(result.path);
1051         g_free(result.addr);
1052         g_free(result.name);
1053         g_free(result.ssid);
1054
1055         dbus_message_unref(reply);
1056
1057         get_properties(task);
1058 }
1059
1060 static void get_properties(struct supplicant_task *task)
1061 {
1062         DBusMessage *message;
1063         DBusPendingCall *call;
1064         char *path;
1065
1066         path = g_slist_nth_data(task->scan_results, 0);
1067         if (path == NULL)
1068                 goto noscan;
1069
1070         message = dbus_message_new_method_call(SUPPLICANT_NAME, path,
1071                                                 SUPPLICANT_INTF ".BSSID",
1072                                                                 "properties");
1073
1074         task->scan_results = g_slist_remove(task->scan_results, path);
1075         g_free(path);
1076
1077         if (message == NULL)
1078                 goto noscan;
1079
1080         if (dbus_connection_send_with_reply(connection, message,
1081                                                 &call, TIMEOUT) == FALSE) {
1082                 connman_error("Failed to get network properties");
1083                 dbus_message_unref(message);
1084                 goto noscan;
1085         }
1086
1087         dbus_pending_call_set_notify(call, properties_reply, task, NULL);
1088
1089         dbus_message_unref(message);
1090
1091         return;
1092
1093 noscan:
1094         if (task->noscan == FALSE)
1095                 connman_device_set_scanning(task->device, FALSE);
1096 }
1097
1098 static void scan_results_reply(DBusPendingCall *call, void *user_data)
1099 {
1100         struct supplicant_task *task = user_data;
1101         DBusMessage *reply;
1102         DBusError error;
1103         char **results;
1104         int i, num_results;
1105
1106         DBG("task %p", task);
1107
1108         reply = dbus_pending_call_steal_reply(call);
1109         if (reply == NULL)
1110                 goto noscan;
1111
1112         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR)
1113                 goto done;
1114
1115         dbus_error_init(&error);
1116
1117         if (dbus_message_get_args(reply, &error,
1118                                 DBUS_TYPE_ARRAY, DBUS_TYPE_OBJECT_PATH,
1119                                                 &results, &num_results,
1120                                                 DBUS_TYPE_INVALID) == FALSE) {
1121                 if (dbus_error_is_set(&error) == TRUE) {
1122                         connman_error("%s", error.message);
1123                         dbus_error_free(&error);
1124                 } else
1125                         connman_error("Wrong arguments for scan result");
1126                 goto done;
1127         }
1128
1129         if (num_results == 0)
1130                 goto done;
1131
1132         for (i = 0; i < num_results; i++) {
1133                 char *path = g_strdup(results[i]);
1134                 if (path == NULL)
1135                         continue;
1136
1137                 task->scan_results = g_slist_append(task->scan_results, path);
1138         }
1139
1140         g_strfreev(results);
1141
1142         dbus_message_unref(reply);
1143
1144         get_properties(task);
1145
1146         return;
1147
1148 done:
1149         dbus_message_unref(reply);
1150
1151 noscan:
1152         if (task->noscan == FALSE)
1153                 connman_device_set_scanning(task->device, FALSE);
1154 }
1155
1156 static void scan_results_available(struct supplicant_task *task)
1157 {
1158         DBusMessage *message;
1159         DBusPendingCall *call;
1160
1161         DBG("task %p", task);
1162
1163         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
1164                                                 SUPPLICANT_INTF ".Interface",
1165                                                         "scanResults");
1166         if (message == NULL)
1167                 return;
1168
1169         if (dbus_connection_send_with_reply(connection, message,
1170                                                 &call, TIMEOUT) == FALSE) {
1171                 connman_error("Failed to request scan result");
1172                 goto done;
1173         }
1174
1175         if (task->noscan == FALSE)
1176                 connman_device_set_scanning(task->device, TRUE);
1177
1178         dbus_pending_call_set_notify(call, scan_results_reply, task, NULL);
1179
1180 done:
1181         dbus_message_unref(message);
1182 }
1183
1184 static enum supplicant_state string2state(const char *state)
1185 {
1186         if (g_str_equal(state, "INACTIVE") == TRUE)
1187                 return WPA_INACTIVE;
1188         else if (g_str_equal(state, "SCANNING") == TRUE)
1189                 return WPA_SCANNING;
1190         else if (g_str_equal(state, "ASSOCIATING") == TRUE)
1191                 return WPA_ASSOCIATING;
1192         else if (g_str_equal(state, "ASSOCIATED") == TRUE)
1193                 return WPA_ASSOCIATED;
1194         else if (g_str_equal(state, "GROUP_HANDSHAKE") == TRUE)
1195                 return WPA_GROUP_HANDSHAKE;
1196         else if (g_str_equal(state, "4WAY_HANDSHAKE") == TRUE)
1197                 return WPA_4WAY_HANDSHAKE;
1198         else if (g_str_equal(state, "COMPLETED") == TRUE)
1199                 return WPA_COMPLETED;
1200         else if (g_str_equal(state, "DISCONNECTED") == TRUE)
1201                 return WPA_DISCONNECTED;
1202         else
1203                 return WPA_INVALID;
1204 }
1205
1206 static void state_change(struct supplicant_task *task, DBusMessage *msg)
1207 {
1208         DBusError error;
1209         const char *newstate, *oldstate;
1210         enum supplicant_state state;
1211
1212         dbus_error_init(&error);
1213
1214         if (dbus_message_get_args(msg, &error, DBUS_TYPE_STRING, &newstate,
1215                                                 DBUS_TYPE_STRING, &oldstate,
1216                                                 DBUS_TYPE_INVALID) == FALSE) {
1217                 if (dbus_error_is_set(&error) == TRUE) {
1218                         connman_error("%s", error.message);
1219                         dbus_error_free(&error);
1220                 } else
1221                         connman_error("Wrong arguments for state change");
1222                 return;
1223         }
1224
1225         DBG("state %s ==> %s", oldstate, newstate);
1226
1227         state = string2state(newstate);
1228         if (state == WPA_INVALID)
1229                 return;
1230
1231         task->state = state;
1232
1233         switch (task->state) {
1234         case WPA_SCANNING:
1235                 task->noscan = TRUE;
1236                 connman_device_set_scanning(task->device, TRUE);
1237                 break;
1238         case WPA_ASSOCIATING:
1239         case WPA_ASSOCIATED:
1240         case WPA_4WAY_HANDSHAKE:
1241         case WPA_GROUP_HANDSHAKE:
1242                 task->noscan = TRUE;
1243                 break;
1244         case WPA_COMPLETED:
1245         case WPA_DISCONNECTED:
1246                 task->noscan = FALSE;
1247                 break;
1248         case WPA_INACTIVE:
1249                 task->noscan = FALSE;
1250                 connman_device_set_scanning(task->device, FALSE);
1251                 break;
1252         case WPA_INVALID:
1253                 break;
1254         }
1255
1256         if (task->network == NULL)
1257                 return;
1258
1259         switch (task->state) {
1260         case WPA_COMPLETED:
1261                 /* carrier on */
1262                 connman_network_set_connected(task->network, TRUE);
1263                 connman_device_set_scanning(task->device, FALSE);
1264                 break;
1265         case WPA_DISCONNECTED:
1266                 /* carrier off */
1267                 connman_network_set_connected(task->network, FALSE);
1268                 connman_device_set_scanning(task->device, FALSE);
1269                 break;
1270         default:
1271                 break;
1272         }
1273 }
1274
1275 static DBusHandlerResult supplicant_filter(DBusConnection *conn,
1276                                                 DBusMessage *msg, void *data)
1277 {
1278         struct supplicant_task *task;
1279         const char *member, *path;
1280
1281         if (dbus_message_has_interface(msg,
1282                                 SUPPLICANT_INTF ".Interface") == FALSE)
1283                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1284
1285         member = dbus_message_get_member(msg);
1286         if (member == NULL)
1287                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1288
1289         path = dbus_message_get_path(msg);
1290         if (path == NULL)
1291                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1292
1293         task = find_task_by_path(path);
1294         if (task == NULL)
1295                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1296
1297         DBG("task %p member %s", task, member);
1298
1299         if (g_str_equal(member, "ScanResultsAvailable") == TRUE)
1300                 scan_results_available(task);
1301         else if (g_str_equal(member, "StateChange") == TRUE)
1302                 state_change(task, msg);
1303
1304         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1305 }
1306
1307 int supplicant_start(struct connman_device *device)
1308 {
1309         struct supplicant_task *task;
1310
1311         DBG("device %p", device);
1312
1313         task = g_try_new0(struct supplicant_task, 1);
1314         if (task == NULL)
1315                 return -ENOMEM;
1316
1317         task->ifindex = connman_device_get_index(device);
1318         task->ifname = inet_index2name(task->ifindex);
1319
1320         if (task->ifname == NULL) {
1321                 g_free(task);
1322                 return -ENOMEM;
1323         }
1324
1325         task->device = connman_device_ref(device);
1326
1327         task->created = FALSE;
1328         task->noscan = FALSE;
1329         task->state = WPA_INVALID;
1330
1331         task_list = g_slist_append(task_list, task);
1332
1333         return create_interface(task);
1334 }
1335
1336 int supplicant_stop(struct connman_device *device)
1337 {
1338         int index = connman_device_get_index(device);
1339         struct supplicant_task *task;
1340
1341         DBG("device %p", device);
1342
1343         task = find_task_by_index(index);
1344         if (task == NULL)
1345                 return -ENODEV;
1346
1347         task_list = g_slist_remove(task_list, task);
1348
1349         disable_network(task);
1350
1351         remove_network(task);
1352
1353         return remove_interface(task);
1354 }
1355
1356 int supplicant_scan(struct connman_device *device)
1357 {
1358         int index = connman_device_get_index(device);
1359         struct supplicant_task *task;
1360         int err;
1361
1362         DBG("device %p", device);
1363
1364         task = find_task_by_index(index);
1365         if (task == NULL)
1366                 return -ENODEV;
1367
1368         switch (task->state) {
1369         case WPA_SCANNING:
1370                 return -EALREADY;
1371         case WPA_ASSOCIATING:
1372         case WPA_ASSOCIATED:
1373         case WPA_4WAY_HANDSHAKE:
1374         case WPA_GROUP_HANDSHAKE:
1375                 return -EBUSY;
1376         default:
1377                 break;
1378         }
1379
1380         err = initiate_scan(task);
1381
1382         return 0;
1383 }
1384
1385 int supplicant_connect(struct connman_network *network)
1386 {
1387         struct supplicant_task *task;
1388         const char *security, *passphrase;
1389         const void *ssid;
1390         unsigned int ssid_len;
1391         int index;
1392
1393         DBG("network %p", network);
1394
1395         security = connman_network_get_string(network, "WiFi.Security");
1396         passphrase = connman_network_get_string(network, "WiFi.Passphrase");
1397
1398         ssid = connman_network_get_blob(network, "WiFi.SSID", &ssid_len);
1399
1400         DBG("security %s passphrase %s", security, passphrase);
1401
1402         if (security == NULL && passphrase == NULL)
1403                 return -EINVAL;
1404
1405         if (g_str_equal(security, "none") == FALSE && passphrase == NULL)
1406                 return -EINVAL;
1407
1408         index = connman_network_get_index(network);
1409
1410         task = find_task_by_index(index);
1411         if (task == NULL)
1412                 return -ENODEV;
1413
1414         task->network = connman_network_ref(network);
1415
1416         add_network(task);
1417
1418         select_network(task);
1419         disable_network(task);
1420
1421         set_network(task, ssid, ssid_len, security, passphrase);
1422
1423         enable_network(task);
1424
1425         return 0;
1426 }
1427
1428 int supplicant_disconnect(struct connman_network *network)
1429 {
1430         struct supplicant_task *task;
1431         int index;
1432
1433         DBG("network %p", network);
1434
1435         index = connman_network_get_index(network);
1436
1437         task = find_task_by_index(index);
1438         if (task == NULL)
1439                 return -ENODEV;
1440
1441         disable_network(task);
1442
1443         remove_network(task);
1444
1445         connman_network_set_connected(task->network, FALSE);
1446
1447         connman_network_unref(task->network);
1448
1449         return 0;
1450 }
1451
1452 static void supplicant_activate(DBusConnection *conn)
1453 {
1454         DBusMessage *message;
1455
1456         DBG("conn %p", conn);
1457
1458         message = dbus_message_new_method_call(SUPPLICANT_NAME, "/",
1459                                 DBUS_INTERFACE_INTROSPECTABLE, "Introspect");
1460         if (message == NULL)
1461                 return;
1462
1463         dbus_message_set_no_reply(message, TRUE);
1464
1465         dbus_connection_send(conn, message, NULL);
1466
1467         dbus_message_unref(message);
1468 }
1469
1470 static GSList *driver_list = NULL;
1471
1472 static void supplicant_probe(DBusConnection *conn, void *user_data)
1473 {
1474         GSList *list;
1475
1476         DBG("conn %p", conn);
1477
1478         for (list = driver_list; list; list = list->next) {
1479                 struct supplicant_driver *driver = list->data;
1480
1481                 DBG("driver %p name %s", driver, driver->name);
1482
1483                 if (driver->probe)
1484                         driver->probe();
1485         }
1486 }
1487
1488 static void supplicant_remove(DBusConnection *conn, void *user_data)
1489 {
1490         GSList *list;
1491
1492         DBG("conn %p", conn);
1493
1494         for (list = driver_list; list; list = list->next) {
1495                 struct supplicant_driver *driver = list->data;
1496
1497                 DBG("driver %p name %s", driver, driver->name);
1498
1499                 if (driver->remove)
1500                         driver->remove();
1501         }
1502 }
1503
1504 static const char *supplicant_rule = "type=signal,"
1505                                 "interface=" SUPPLICANT_INTF ".Interface";
1506 static guint watch;
1507
1508 static int supplicant_create(void)
1509 {
1510         if (g_slist_length(driver_list) > 0)
1511                 return 0;
1512
1513         connection = connman_dbus_get_connection();
1514         if (connection == NULL)
1515                 return -EIO;
1516
1517         DBG("connection %p", connection);
1518
1519         if (dbus_connection_add_filter(connection,
1520                                 supplicant_filter, NULL, NULL) == FALSE) {
1521                 connection = connman_dbus_get_connection();
1522                 return -EIO;
1523         }
1524
1525         dbus_bus_add_match(connection, supplicant_rule, NULL);
1526         dbus_connection_flush(connection);
1527
1528         watch = g_dbus_add_service_watch(connection, SUPPLICANT_NAME,
1529                         supplicant_probe, supplicant_remove, NULL, NULL);
1530
1531         return 0;
1532 }
1533
1534 static void supplicant_destroy(void)
1535 {
1536         if (g_slist_length(driver_list) > 0)
1537                 return;
1538
1539         DBG("connection %p", connection);
1540
1541         if (watch > 0)
1542                 g_dbus_remove_watch(connection, watch);
1543
1544         dbus_bus_remove_match(connection, supplicant_rule, NULL);
1545         dbus_connection_flush(connection);
1546
1547         dbus_connection_remove_filter(connection, supplicant_filter, NULL);
1548
1549         dbus_connection_unref(connection);
1550         connection = NULL;
1551 }
1552
1553 int supplicant_register(struct supplicant_driver *driver)
1554 {
1555         int err;
1556
1557         DBG("driver %p name %s", driver, driver->name);
1558
1559         err = supplicant_create();
1560         if (err < 0)
1561                 return err;
1562
1563         driver_list = g_slist_append(driver_list, driver);
1564
1565         if (g_dbus_check_service(connection, SUPPLICANT_NAME) == TRUE)
1566                 supplicant_probe(connection, NULL);
1567         else
1568                 supplicant_activate(connection);
1569
1570         return 0;
1571 }
1572
1573 void supplicant_unregister(struct supplicant_driver *driver)
1574 {
1575         DBG("driver %p name %s", driver, driver->name);
1576
1577         supplicant_remove(connection, NULL);
1578
1579         driver_list = g_slist_remove(driver_list, driver);
1580
1581         supplicant_destroy();
1582 }