vcs.maemo.org Git - connman/blob - plugins/supplicant.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2008  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 <string.h>
  27 #include <dbus/dbus.h>
  28
  29 #include <connman/log.h>
  30
  31 #include "supplicant.h"
  32
  33 #define IEEE80211_CAP_ESS       0x0001
  34 #define IEEE80211_CAP_IBSS      0x0002
  35 #define IEEE80211_CAP_PRIVACY   0x0010
  36
  37 enum supplicant_state {
  38         STATE_INACTIVE,
  39         STATE_SCANNING,
  40         STATE_ASSOCIATING,
  41         STATE_ASSOCIATED,
  42         STATE_4WAY_HANDSHAKE,
  43         STATE_GROUP_HANDSHAKE,
  44         STATE_COMPLETED,
  45         STATE_DISCONNECTED,
  46 };
  47
  48 struct supplicant_task {
  49         DBusConnection *conn;
  50         int ifindex;
  51         gchar *ifname;
  52         struct connman_element *element;
  53         struct supplicant_callback *callback;
  54         gchar *path;
  55         gboolean created;
  56         gchar *network;
  57         enum supplicant_state state;
  58 };
  59
  60 static GStaticMutex task_mutex = G_STATIC_MUTEX_INIT;
  61 static GSList *task_list = NULL;
  62
  63 static struct supplicant_task *find_task_by_index(int index)
  64 {
  65         GSList *list;
  66
  67         for (list = task_list; list; list = list->next) {
  68                 struct supplicant_task *task = list->data;
  69
  70                 if (task->ifindex == index)
  71                         return task;
  72         }
  73
  74         return NULL;
  75 }
  76
  77 static int get_interface(struct supplicant_task *task)
  78 {
  79         DBusMessage *message, *reply;
  80         DBusError error;
  81         const char *path;
  82
  83         DBG("task %p", task);
  84
  85         message = dbus_message_new_method_call(SUPPLICANT_NAME, SUPPLICANT_PATH,
  86                                         SUPPLICANT_INTF, "getInterface");
  87         if (message == NULL)
  88                 return -ENOMEM;
  89
  90         dbus_message_append_args(message, DBUS_TYPE_STRING, &task->ifname,
  91                                                         DBUS_TYPE_INVALID);
  92
  93         dbus_error_init(&error);
  94
  95         reply = dbus_connection_send_with_reply_and_block(task->conn,
  96                                                         message, -1, &error);
  97         if (reply == NULL) {
  98                 if (dbus_error_is_set(&error) == TRUE) {
  99                         connman_error("%s", error.message);
 100                         dbus_error_free(&error);
 101                 } else
 102                         connman_error("Failed to get interface");
 103                 dbus_message_unref(message);
 104                 return -EIO;
 105         }
 106
 107         dbus_message_unref(message);
 108
 109         dbus_error_init(&error);
 110
 111         if (dbus_message_get_args(reply, &error, DBUS_TYPE_OBJECT_PATH, &path,
 112                                                 DBUS_TYPE_INVALID) == FALSE) {
 113                 if (dbus_error_is_set(&error) == TRUE) {
 114                         connman_error("%s", error.message);
 115                         dbus_error_free(&error);
 116                 } else
 117                         connman_error("Wrong arguments for interface");
 118                 dbus_message_unref(reply);
 119                 return -EIO;
 120         }
 121
 122         DBG("path %s", path);
 123
 124         task->path = g_strdup(path);
 125         task->created = FALSE;
 126
 127         dbus_message_unref(reply);
 128
 129         return 0;
 130 }
 131
 132 static int add_interface(struct supplicant_task *task)
 133 {
 134         DBusMessage *message, *reply;
 135         DBusError error;
 136         const char *path;
 137
 138         DBG("task %p", task);
 139
 140         message = dbus_message_new_method_call(SUPPLICANT_NAME, SUPPLICANT_PATH,
 141                                         SUPPLICANT_INTF, "addInterface");
 142         if (message == NULL)
 143                 return -ENOMEM;
 144
 145         dbus_error_init(&error);
 146
 147         dbus_message_append_args(message, DBUS_TYPE_STRING, &task->ifname,
 148                                                         DBUS_TYPE_INVALID);
 149
 150         reply = dbus_connection_send_with_reply_and_block(task->conn,
 151                                                         message, -1, &error);
 152         if (reply == NULL) {
 153                 if (dbus_error_is_set(&error) == TRUE) {
 154                         connman_error("%s", error.message);
 155                         dbus_error_free(&error);
 156                 } else
 157                         connman_error("Failed to add interface");
 158                 dbus_message_unref(message);
 159                 return -EIO;
 160         }
 161
 162         dbus_message_unref(message);
 163
 164         dbus_error_init(&error);
 165
 166         if (dbus_message_get_args(reply, &error, DBUS_TYPE_OBJECT_PATH, &path,
 167                                                 DBUS_TYPE_INVALID) == FALSE) {
 168                 if (dbus_error_is_set(&error) == TRUE) {
 169                         connman_error("%s", error.message);
 170                         dbus_error_free(&error);
 171                 } else
 172                         connman_error("Wrong arguments for interface");
 173                 dbus_message_unref(reply);
 174                 return -EIO;
 175         }
 176
 177         DBG("path %s", path);
 178
 179         task->path = g_strdup(path);
 180         task->created = TRUE;
 181
 182         dbus_message_unref(reply);
 183
 184         return 0;
 185 }
 186
 187 static int remove_interface(struct supplicant_task *task)
 188 {
 189         DBusMessage *message, *reply;
 190         DBusError error;
 191
 192         DBG("task %p", task);
 193
 194         if (task->created == FALSE)
 195                 return -EINVAL;
 196
 197         message = dbus_message_new_method_call(SUPPLICANT_NAME, SUPPLICANT_PATH,
 198                                         SUPPLICANT_INTF, "removeInterface");
 199         if (message == NULL)
 200                 return -ENOMEM;
 201
 202         dbus_message_append_args(message, DBUS_TYPE_OBJECT_PATH, &task->path,
 203                                                         DBUS_TYPE_INVALID);
 204
 205         dbus_error_init(&error);
 206
 207         reply = dbus_connection_send_with_reply_and_block(task->conn,
 208                                                         message, -1, &error);
 209         if (reply == NULL) {
 210                 if (dbus_error_is_set(&error) == TRUE) {
 211                         connman_error("%s", error.message);
 212                         dbus_error_free(&error);
 213                 } else
 214                         connman_error("Failed to remove interface");
 215                 dbus_message_unref(message);
 216                 return -EIO;
 217         }
 218
 219         dbus_message_unref(message);
 220
 221         dbus_message_unref(reply);
 222
 223         return 0;
 224 }
 225
 226 static int set_ap_scan(struct supplicant_task *task)
 227 {
 228         DBusMessage *message, *reply;
 229         DBusError error;
 230         guint32 ap_scan = 1;
 231
 232         DBG("task %p", task);
 233
 234         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 235                                 SUPPLICANT_INTF ".Interface", "setAPScan");
 236         if (message == NULL)
 237                 return -ENOMEM;
 238
 239         dbus_message_append_args(message, DBUS_TYPE_UINT32, &ap_scan,
 240                                                         DBUS_TYPE_INVALID);
 241
 242         dbus_error_init(&error);
 243
 244         reply = dbus_connection_send_with_reply_and_block(task->conn,
 245                                                         message, -1, &error);
 246         if (reply == NULL) {
 247                 if (dbus_error_is_set(&error) == TRUE) {
 248                         connman_error("%s", error.message);
 249                         dbus_error_free(&error);
 250                 } else
 251                         connman_error("Failed to set AP scan");
 252                 dbus_message_unref(message);
 253                 return -EIO;
 254         }
 255
 256         dbus_message_unref(message);
 257
 258         dbus_message_unref(reply);
 259
 260         return 0;
 261 }
 262
 263 static int add_network(struct supplicant_task *task)
 264 {
 265         DBusMessage *message, *reply;
 266         DBusError error;
 267         const char *path;
 268
 269         DBG("task %p", task);
 270
 271         if (task->network != NULL)
 272                 return -EALREADY;
 273
 274         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 275                                 SUPPLICANT_INTF ".Interface", "addNetwork");
 276         if (message == NULL)
 277                 return -ENOMEM;
 278
 279         dbus_error_init(&error);
 280
 281         reply = dbus_connection_send_with_reply_and_block(task->conn,
 282                                                         message, -1, &error);
 283         if (reply == NULL) {
 284                 if (dbus_error_is_set(&error) == TRUE) {
 285                         connman_error("%s", error.message);
 286                         dbus_error_free(&error);
 287                 } else
 288                         connman_error("Failed to add network");
 289                 dbus_message_unref(message);
 290                 return -EIO;
 291         }
 292
 293         dbus_message_unref(message);
 294
 295         dbus_error_init(&error);
 296
 297         if (dbus_message_get_args(reply, &error, DBUS_TYPE_OBJECT_PATH, &path,
 298                                                 DBUS_TYPE_INVALID) == FALSE) {
 299                 if (dbus_error_is_set(&error) == TRUE) {
 300                         connman_error("%s", error.message);
 301                         dbus_error_free(&error);
 302                 } else
 303                         connman_error("Wrong arguments for network");
 304                 dbus_message_unref(reply);
 305                 return -EIO;
 306         }
 307
 308         DBG("path %s", path);
 309
 310         task->network = g_strdup(path);
 311
 312         dbus_message_unref(reply);
 313
 314         return 0;
 315 }
 316
 317 static int remove_network(struct supplicant_task *task)
 318 {
 319         DBusMessage *message, *reply;
 320         DBusError error;
 321
 322         DBG("task %p", task);
 323
 324         if (task->network == NULL)
 325                 return -EINVAL;
 326
 327         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 328                                 SUPPLICANT_INTF ".Interface", "removeNetwork");
 329         if (message == NULL)
 330                 return -ENOMEM;
 331
 332         dbus_message_append_args(message, DBUS_TYPE_OBJECT_PATH, &task->network,
 333                                                         DBUS_TYPE_INVALID);
 334
 335         dbus_error_init(&error);
 336
 337         reply = dbus_connection_send_with_reply_and_block(task->conn,
 338                                                         message, -1, &error);
 339         if (reply == NULL) {
 340                 if (dbus_error_is_set(&error) == TRUE) {
 341                         connman_error("%s", error.message);
 342                         dbus_error_free(&error);
 343                 } else
 344                         connman_error("Failed to remove network");
 345                 dbus_message_unref(message);
 346                 return -EIO;
 347         }
 348
 349         dbus_message_unref(message);
 350
 351         dbus_message_unref(reply);
 352
 353         g_free(task->network);
 354         task->network = NULL;
 355
 356         return 0;
 357 }
 358
 359 static int select_network(struct supplicant_task *task)
 360 {
 361         DBusMessage *message, *reply;
 362         DBusError error;
 363
 364         DBG("task %p", task);
 365
 366         if (task->network == NULL)
 367                 return -EINVAL;
 368
 369         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 370                                 SUPPLICANT_INTF ".Interface", "selectNetwork");
 371         if (message == NULL)
 372                 return -ENOMEM;
 373
 374         dbus_message_append_args(message, DBUS_TYPE_OBJECT_PATH, &task->network,
 375                                                         DBUS_TYPE_INVALID);
 376
 377         dbus_error_init(&error);
 378
 379         reply = dbus_connection_send_with_reply_and_block(task->conn,
 380                                                         message, -1, &error);
 381         if (reply == NULL) {
 382                 if (dbus_error_is_set(&error) == TRUE) {
 383                         connman_error("%s", error.message);
 384                         dbus_error_free(&error);
 385                 } else
 386                         connman_error("Failed to select network");
 387                 dbus_message_unref(message);
 388                 return -EIO;
 389         }
 390
 391         dbus_message_unref(message);
 392
 393         dbus_message_unref(reply);
 394
 395         return 0;
 396 }
 397
 398 static int enable_network(struct supplicant_task *task)
 399 {
 400         DBusMessage *message, *reply;
 401         DBusError error;
 402
 403         DBG("task %p", task);
 404
 405         if (task->network == NULL)
 406                 return -EINVAL;
 407
 408         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->network,
 409                                         SUPPLICANT_INTF ".Network", "enable");
 410         if (message == NULL)
 411                 return -ENOMEM;
 412
 413         dbus_error_init(&error);
 414
 415         reply = dbus_connection_send_with_reply_and_block(task->conn,
 416                                                         message, -1, &error);
 417         if (reply == NULL) {
 418                 if (dbus_error_is_set(&error) == TRUE) {
 419                         connman_error("%s", error.message);
 420                         dbus_error_free(&error);
 421                 } else
 422                         connman_error("Failed to enable network");
 423                 dbus_message_unref(message);
 424                 return -EIO;
 425         }
 426
 427         dbus_message_unref(message);
 428
 429         dbus_message_unref(reply);
 430
 431         return 0;
 432 }
 433
 434 static int disable_network(struct supplicant_task *task)
 435 {
 436         DBusMessage *message, *reply;
 437         DBusError error;
 438
 439         DBG("task %p", task);
 440
 441         if (task->network == NULL)
 442                 return -EINVAL;
 443
 444         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->network,
 445                                         SUPPLICANT_INTF ".Network", "disable");
 446         if (message == NULL)
 447                 return -ENOMEM;
 448
 449         dbus_error_init(&error);
 450
 451         reply = dbus_connection_send_with_reply_and_block(task->conn,
 452                                                         message, -1, &error);
 453         if (reply == NULL) {
 454                 if (dbus_error_is_set(&error) == TRUE) {
 455                         connman_error("%s", error.message);
 456                         dbus_error_free(&error);
 457                 } else
 458                         connman_error("Failed to disable network");
 459                 dbus_message_unref(message);
 460                 return -EIO;
 461         }
 462
 463         dbus_message_unref(message);
 464
 465         dbus_message_unref(reply);
 466
 467         return 0;
 468 }
 469
 470 static void append_entry(DBusMessageIter *dict,
 471                                 const char *key, int type, void *val)
 472 {
 473         DBusMessageIter entry, value;
 474         const char *signature;
 475
 476         dbus_message_iter_open_container(dict, DBUS_TYPE_DICT_ENTRY,
 477                                                                 NULL, &entry);
 478
 479         dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &key);
 480
 481         switch (type) {
 482         case DBUS_TYPE_STRING:
 483                 signature = DBUS_TYPE_STRING_AS_STRING;
 484                 break;
 485         case DBUS_TYPE_UINT16:
 486                 signature = DBUS_TYPE_UINT16_AS_STRING;
 487                 break;
 488         default:
 489                 signature = DBUS_TYPE_VARIANT_AS_STRING;
 490                 break;
 491         }
 492
 493         dbus_message_iter_open_container(&entry, DBUS_TYPE_VARIANT,
 494                                                         signature, &value);
 495         dbus_message_iter_append_basic(&value, type, val);
 496         dbus_message_iter_close_container(&entry, &value);
 497
 498         dbus_message_iter_close_container(dict, &entry);
 499 }
 500
 501 static int set_network(struct supplicant_task *task, const char *network,
 502                                                 const char *passphrase)
 503 {
 504         DBusMessage *message, *reply;
 505         DBusMessageIter array, dict;
 506         DBusError error;
 507
 508         DBG("task %p", task);
 509
 510         if (task->network == NULL)
 511                 return -EINVAL;
 512
 513         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->network,
 514                                         SUPPLICANT_INTF ".Network", "set");
 515         if (message == NULL)
 516                 return -ENOMEM;
 517
 518         dbus_message_iter_init_append(message, &array);
 519
 520         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
 521                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 522                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 523                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 524
 525         append_entry(&dict, "ssid", DBUS_TYPE_STRING, &network);
 526
 527         if (passphrase && strlen(passphrase) > 0) {
 528                 const char *key_mgmt = "WPA-PSK";
 529                 append_entry(&dict, "key_mgmt", DBUS_TYPE_STRING, &key_mgmt);
 530                 append_entry(&dict, "psk", DBUS_TYPE_STRING, &passphrase);
 531         } else {
 532                 const char *key_mgmt = "NONE";
 533                 append_entry(&dict, "key_mgmt", DBUS_TYPE_STRING, &key_mgmt);
 534         }
 535
 536         dbus_message_iter_close_container(&array, &dict);
 537
 538         dbus_error_init(&error);
 539
 540         reply = dbus_connection_send_with_reply_and_block(task->conn,
 541                                                         message, -1, &error);
 542         if (reply == NULL) {
 543                 if (dbus_error_is_set(&error) == TRUE) {
 544                         connman_error("%s", error.message);
 545                         dbus_error_free(&error);
 546                 } else
 547                         connman_error("Failed to set network options");
 548                 dbus_message_unref(message);
 549                 return -EIO;
 550         }
 551
 552         dbus_message_unref(message);
 553
 554         dbus_message_unref(reply);
 555
 556         return 0;
 557 }
 558
 559 static int initiate_scan(struct supplicant_task *task)
 560 {
 561         DBusMessage *message, *reply;
 562         DBusError error;
 563
 564         DBG("task %p", task);
 565
 566         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 567                                         SUPPLICANT_INTF ".Interface", "scan");
 568         if (message == NULL)
 569                 return -ENOMEM;
 570
 571         dbus_error_init(&error);
 572
 573         reply = dbus_connection_send_with_reply_and_block(task->conn,
 574                                                         message, -1, &error);
 575         if (reply == NULL) {
 576                 if (dbus_error_is_set(&error) == TRUE) {
 577                         connman_error("%s", error.message);
 578                         dbus_error_free(&error);
 579                 } else
 580                         connman_error("Failed to initiate scan");
 581                 dbus_message_unref(message);
 582                 return -EIO;
 583         }
 584
 585         dbus_message_unref(message);
 586
 587         dbus_message_unref(reply);
 588
 589         return 0;
 590 }
 591
 592 static void extract_ssid(struct supplicant_network *network,
 593                                                 DBusMessageIter *value)
 594 {
 595         DBusMessageIter array;
 596         unsigned char *ssid;
 597         int ssid_len;
 598
 599         dbus_message_iter_recurse(value, &array);
 600         dbus_message_iter_get_fixed_array(&array, &ssid, &ssid_len);
 601
 602         network->identifier = g_strdup((char *) ssid);
 603 }
 604
 605 static void extract_wpaie(struct supplicant_network *network,
 606                                                 DBusMessageIter *value)
 607 {
 608         DBusMessageIter array;
 609         unsigned char *ie;
 610         int ie_len;
 611
 612         dbus_message_iter_recurse(value, &array);
 613         dbus_message_iter_get_fixed_array(&array, &ie, &ie_len);
 614
 615         if (ie_len > 0)
 616                 network->has_wpa = TRUE;
 617 }
 618
 619 static void extract_rsnie(struct supplicant_network *network,
 620                                                 DBusMessageIter *value)
 621 {
 622         DBusMessageIter array;
 623         unsigned char *ie;
 624         int ie_len;
 625
 626         dbus_message_iter_recurse(value, &array);
 627         dbus_message_iter_get_fixed_array(&array, &ie, &ie_len);
 628
 629         if (ie_len > 0)
 630                 network->has_rsn = TRUE;
 631 }
 632
 633 static void extract_capabilites(struct supplicant_network *network,
 634                                                 DBusMessageIter *value)
 635 {
 636         guint capabilities;
 637
 638         dbus_message_iter_get_basic(value, &capabilities);
 639
 640         network->capabilities = capabilities;
 641
 642         if (capabilities & IEEE80211_CAP_PRIVACY)
 643                 network->has_wep = TRUE;
 644 }
 645
 646 static int parse_network_properties(struct supplicant_task *task,
 647                                                         DBusMessage *message)
 648 {
 649         DBusMessageIter array, dict;
 650         struct supplicant_network *network;
 651
 652         network = g_try_new0(struct supplicant_network, 1);
 653         if (network == NULL)
 654                 return -ENOMEM;
 655
 656         dbus_message_iter_init(message, &array);
 657
 658         dbus_message_iter_recurse(&array, &dict);
 659
 660         while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
 661                 DBusMessageIter entry, value;
 662                 const char *key;
 663
 664                 dbus_message_iter_recurse(&dict, &entry);
 665                 dbus_message_iter_get_basic(&entry, &key);
 666
 667                 dbus_message_iter_next(&entry);
 668
 669                 dbus_message_iter_recurse(&entry, &value);
 670
 671                 //type = dbus_message_iter_get_arg_type(&value);
 672                 //dbus_message_iter_get_basic(&value, &val);
 673
 674                 if (g_str_equal(key, "ssid") == TRUE)
 675                         extract_ssid(network, &value);
 676                 else if (g_str_equal(key, "wpaie") == TRUE)
 677                         extract_wpaie(network, &value);
 678                 else if (g_str_equal(key, "rsnie") == TRUE)
 679                         extract_rsnie(network, &value);
 680                 else if (g_str_equal(key, "capabilities") == TRUE)
 681                         extract_capabilites(network, &value);
 682
 683                 dbus_message_iter_next(&dict);
 684         }
 685
 686         if (task->callback && task->callback->scan_result)
 687                 task->callback->scan_result(task->element, network);
 688
 689         g_free(network);
 690
 691         return 0;
 692 }
 693
 694 static int get_network_properties(struct supplicant_task *task,
 695                                                         const char *path)
 696 {
 697         DBusMessage *message, *reply;
 698         DBusError error;
 699
 700         message = dbus_message_new_method_call(SUPPLICANT_NAME, path,
 701                                                 SUPPLICANT_INTF ".BSSID",
 702                                                                 "properties");
 703         if (message == NULL)
 704                 return -ENOMEM;
 705
 706         dbus_error_init(&error);
 707
 708         reply = dbus_connection_send_with_reply_and_block(task->conn,
 709                                                         message, -1, &error);
 710         if (reply == NULL) {
 711                 if (dbus_error_is_set(&error) == TRUE) {
 712                         connman_error("%s", error.message);
 713                         dbus_error_free(&error);
 714                 } else
 715                         connman_error("Failed to get network properties");
 716                 dbus_message_unref(message);
 717                 return -EIO;
 718         }
 719
 720         dbus_message_unref(message);
 721
 722         parse_network_properties(task, reply);
 723
 724         dbus_message_unref(reply);
 725
 726         return 0;
 727 }
 728
 729 static int scan_results_available(struct supplicant_task *task)
 730 {
 731         DBusMessage *message, *reply;
 732         DBusError error;
 733         char **results;
 734         int i, num_results;
 735
 736         DBG("task %p", task);
 737
 738         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 739                                                 SUPPLICANT_INTF ".Interface",
 740                                                         "scanResults");
 741         if (message == NULL)
 742                 return -ENOMEM;
 743
 744         dbus_error_init(&error);
 745
 746         reply = dbus_connection_send_with_reply_and_block(task->conn,
 747                                                         message, -1, &error);
 748         if (reply == NULL) {
 749                 if (dbus_error_is_set(&error) == TRUE) {
 750                         connman_error("%s", error.message);
 751                         dbus_error_free(&error);
 752                 } else
 753                         connman_error("Failed to request scan result");
 754                 dbus_message_unref(message);
 755                 return -EIO;
 756         }
 757
 758         dbus_message_unref(message);
 759
 760         dbus_error_init(&error);
 761
 762         if (dbus_message_get_args(reply, &error,
 763                                 DBUS_TYPE_ARRAY, DBUS_TYPE_OBJECT_PATH,
 764                                                 &results, &num_results,
 765                                                 DBUS_TYPE_INVALID) == FALSE) {
 766                 if (dbus_error_is_set(&error) == TRUE) {
 767                         connman_error("%s", error.message);
 768                         dbus_error_free(&error);
 769                 } else
 770                         connman_error("Wrong arguments for scan result");
 771                 dbus_message_unref(reply);
 772                 return -EIO;
 773         }
 774
 775         for (i = 0; i < num_results; i++)
 776                 get_network_properties(task, results[i]);
 777
 778         g_strfreev(results);
 779
 780         dbus_message_unref(reply);
 781
 782         return 0;
 783 }
 784
 785 static void state_change(struct supplicant_task *task, DBusMessage *msg)
 786 {
 787         DBusError error;
 788         const char *state, *previous;
 789
 790         dbus_error_init(&error);
 791
 792         if (dbus_message_get_args(msg, &error, DBUS_TYPE_STRING, &state,
 793                                                 DBUS_TYPE_STRING, &previous,
 794                                                 DBUS_TYPE_INVALID) == FALSE) {
 795                 if (dbus_error_is_set(&error) == TRUE) {
 796                         connman_error("%s", error.message);
 797                         dbus_error_free(&error);
 798                 } else
 799                         connman_error("Wrong arguments for state change");
 800                 return;
 801         }
 802
 803         DBG("state %s ==> %s", previous, state);
 804
 805         if (g_str_equal(state, "INACTIVE") == TRUE)
 806                 task->state = STATE_INACTIVE;
 807         else if (g_str_equal(state, "SCANNING") == TRUE)
 808                 task->state = STATE_SCANNING;
 809         else if (g_str_equal(state, "ASSOCIATING") == TRUE)
 810                 task->state = STATE_ASSOCIATING;
 811         else if (g_str_equal(state, "ASSOCIATED") == TRUE)
 812                 task->state = STATE_ASSOCIATED;
 813         else if (g_str_equal(state, "GROUP_HANDSHAKE") == TRUE)
 814                 task->state = STATE_4WAY_HANDSHAKE;
 815         else if (g_str_equal(state, "4WAY_HANDSHAKE") == TRUE)
 816                 task->state = STATE_4WAY_HANDSHAKE;
 817         else if (g_str_equal(state, "COMPLETED") == TRUE)
 818                 task->state = STATE_COMPLETED;
 819         else if (g_str_equal(state, "DISCONNECTED") == TRUE)
 820                 task->state = STATE_DISCONNECTED;
 821
 822         switch (task->state) {
 823         case STATE_COMPLETED:
 824                 /* carrier on */
 825                 break;
 826         case STATE_DISCONNECTED:
 827                 /* carrier off */
 828                 break;
 829         default:
 830                 break;
 831         }
 832 }
 833
 834 static DBusHandlerResult supplicant_filter(DBusConnection *conn,
 835                                                 DBusMessage *msg, void *data)
 836 {
 837         struct supplicant_task *task = data;
 838         const char *member;
 839
 840         if (dbus_message_has_interface(msg,
 841                                 SUPPLICANT_INTF ".Interface") == FALSE)
 842                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 843
 844         member = dbus_message_get_member(msg);
 845         if (member == NULL)
 846                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 847
 848         DBG("task %p member %s", task, member);
 849
 850         if (g_str_equal(member, "ScanResultsAvailable") == TRUE)
 851                 scan_results_available(task);
 852         else if (g_str_equal(member, "StateChange") == TRUE)
 853                 state_change(task, msg);
 854
 855         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 856 }
 857
 858 static int add_filter(struct supplicant_task *task)
 859 {
 860         DBusError error;
 861         gchar *filter;
 862
 863         if (dbus_connection_add_filter(task->conn,
 864                                 supplicant_filter, task, NULL) == FALSE)
 865                 return -EIO;
 866
 867         filter = g_strdup_printf("type=signal,interface=%s.Interface,path=%s",
 868                                                 SUPPLICANT_INTF, task->path);
 869
 870         DBG("filter %s", filter);
 871
 872         dbus_error_init(&error);
 873
 874         dbus_bus_add_match(task->conn, filter, &error);
 875
 876         g_free(filter);
 877
 878         if (dbus_error_is_set(&error) == TRUE) {
 879                 connman_error("Can't add match: %s", error.message);
 880                 dbus_error_free(&error);
 881         }
 882
 883         return 0;
 884 }
 885
 886 static int remove_filter(struct supplicant_task *task)
 887 {
 888         DBusError error;
 889         gchar *filter;
 890
 891         filter = g_strdup_printf("type=signal,interface=%s.Interface,path=%s",
 892                                                 SUPPLICANT_INTF, task->path);
 893
 894         DBG("filter %s", filter);
 895
 896         dbus_error_init(&error);
 897
 898         dbus_bus_add_match(task->conn, filter, &error);
 899
 900         g_free(filter);
 901
 902         if (dbus_error_is_set(&error) == TRUE) {
 903                 connman_error("Can't add match: %s", error.message);
 904                 dbus_error_free(&error);
 905         }
 906
 907         dbus_connection_remove_filter(task->conn, supplicant_filter, task);
 908
 909         return 0;
 910 }
 911
 912 int __supplicant_start(struct connman_element *element,
 913                                         struct supplicant_callback *callback)
 914 {
 915         struct supplicant_task *task;
 916         int err;
 917
 918         DBG("element %p name %s", element, element->name);
 919
 920         task = g_try_new0(struct supplicant_task, 1);
 921         if (task == NULL)
 922                 return -ENOMEM;
 923
 924         task->ifindex = element->netdev.index;
 925         task->ifname = g_strdup(element->netdev.name);
 926         task->element = element;
 927         task->callback = callback;
 928
 929         if (task->ifname == NULL) {
 930                 g_free(task);
 931                 return -ENOMEM;
 932         }
 933
 934         task->conn = dbus_bus_get(DBUS_BUS_SYSTEM, NULL);
 935         if (task->conn == NULL) {
 936                 g_free(task);
 937                 return -EIO;
 938         }
 939
 940         task->created = FALSE;
 941         task->state = STATE_INACTIVE;
 942
 943         g_static_mutex_lock(&task_mutex);
 944         task_list = g_slist_append(task_list, task);
 945         g_static_mutex_unlock(&task_mutex);
 946
 947         err = get_interface(task);
 948         if (err < 0) {
 949                 err = add_interface(task);
 950                 if (err < 0) {
 951                         g_free(task);
 952                         return err;
 953                 }
 954         }
 955
 956         add_filter(task);
 957
 958         set_ap_scan(task);
 959
 960         return 0;
 961 }
 962
 963 int __supplicant_stop(struct connman_element *element)
 964 {
 965         struct supplicant_task *task;
 966
 967         DBG("element %p name %s", element, element->name);
 968
 969         task = find_task_by_index(element->netdev.index);
 970         if (task == NULL)
 971                 return -ENODEV;
 972
 973         g_static_mutex_lock(&task_mutex);
 974         task_list = g_slist_remove(task_list, task);
 975         g_static_mutex_unlock(&task_mutex);
 976
 977         disable_network(task);
 978
 979         remove_network(task);
 980
 981         remove_filter(task);
 982
 983         remove_interface(task);
 984
 985         dbus_connection_unref(task->conn);
 986
 987         g_free(task->ifname);
 988         g_free(task->path);
 989         g_free(task);
 990
 991         return 0;
 992 }
 993
 994 int __supplicant_scan(struct connman_element *element)
 995 {
 996         struct supplicant_task *task;
 997         int err;
 998
 999         DBG("element %p name %s", element, element->name);
1000
1001         task = find_task_by_index(element->netdev.index);
1002         if (task == NULL)
1003                 return -ENODEV;
1004
1005         switch (task->state) {
1006         case STATE_SCANNING:
1007                 return -EALREADY;
1008         case STATE_ASSOCIATING:
1009         case STATE_ASSOCIATED:
1010         case STATE_4WAY_HANDSHAKE:
1011         case STATE_GROUP_HANDSHAKE:
1012                 return -EBUSY;
1013         default:
1014                 break;
1015         }
1016
1017         err = initiate_scan(task);
1018
1019         return 0;
1020 }
1021
1022 int __supplicant_connect(struct connman_element *element)
1023 {
1024         struct supplicant_task *task;
1025
1026         DBG("element %p name %s", element, element->name);
1027
1028         task = find_task_by_index(element->netdev.index);
1029         if (task == NULL)
1030                 return -ENODEV;
1031
1032         add_network(task);
1033
1034         select_network(task);
1035         disable_network(task);
1036
1037         set_network(task, NULL, NULL);
1038
1039         enable_network(task);
1040
1041         return 0;
1042 }
1043
1044 int __supplicant_disconnect(struct connman_element *element)
1045 {
1046         struct supplicant_task *task;
1047
1048         DBG("element %p name %s", element, element->name);
1049
1050         task = find_task_by_index(element->netdev.index);
1051         if (task == NULL)
1052                 return -ENODEV;
1053
1054         disable_network(task);
1055
1056         remove_network(task);
1057
1058         return 0;
1059 }