plugins/supplicant.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2009  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <stdio.h>
  27 #include <unistd.h>
  28 #include <errno.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31 #include <sys/ioctl.h>
  32 #include <sys/socket.h>
  33 #include <linux/if_arp.h>
  34 #include <linux/wireless.h>
  35 #include <net/ethernet.h>
  36
  37 #include <gdbus.h>
  38
  39 #define CONNMAN_API_SUBJECT_TO_CHANGE
  40 #include <connman/device.h>
  41 #include <connman/option.h>
  42 #include <connman/inet.h>
  43 #include <connman/dbus.h>
  44 #include <connman/log.h>
  45
  46 #include "supplicant.h"
  47
  48 #define TIMEOUT 5000
  49
  50 #define IEEE80211_CAP_ESS       0x0001
  51 #define IEEE80211_CAP_IBSS      0x0002
  52 #define IEEE80211_CAP_PRIVACY   0x0010
  53
  54 #define SUPPLICANT_NAME  "fi.epitest.hostap.WPASupplicant"
  55 #define SUPPLICANT_INTF  "fi.epitest.hostap.WPASupplicant"
  56 #define SUPPLICANT_PATH  "/fi/epitest/hostap/WPASupplicant"
  57
  58 /* Taken from "WPA Supplicant - Common definitions" */
  59 enum supplicant_state {
  60         /**
  61          * WPA_DISCONNECTED - Disconnected state
  62          *
  63          * This state indicates that client is not associated, but is likely to
  64          * start looking for an access point. This state is entered when a
  65          * connection is lost.
  66          */
  67         WPA_DISCONNECTED,
  68
  69         /**
  70          * WPA_INACTIVE - Inactive state (wpa_supplicant disabled)
  71          *
  72          * This state is entered if there are no enabled networks in the
  73          * configuration. wpa_supplicant is not trying to associate with a new
  74          * network and external interaction (e.g., ctrl_iface call to add or
  75          * enable a network) is needed to start association.
  76          */
  77         WPA_INACTIVE,
  78
  79         /**
  80          * WPA_SCANNING - Scanning for a network
  81          *
  82          * This state is entered when wpa_supplicant starts scanning for a
  83          * network.
  84          */
  85         WPA_SCANNING,
  86
  87         /**
  88          * WPA_ASSOCIATING - Trying to associate with a BSS/SSID
  89          *
  90          * This state is entered when wpa_supplicant has found a suitable BSS
  91          * to associate with and the driver is configured to try to associate
  92          * with this BSS in ap_scan=1 mode. When using ap_scan=2 mode, this
  93          * state is entered when the driver is configured to try to associate
  94          * with a network using the configured SSID and security policy.
  95          */
  96         WPA_ASSOCIATING,
  97
  98         /**
  99          * WPA_ASSOCIATED - Association completed
 100          *
 101          * This state is entered when the driver reports that association has
 102          * been successfully completed with an AP. If IEEE 802.1X is used
 103          * (with or without WPA/WPA2), wpa_supplicant remains in this state
 104          * until the IEEE 802.1X/EAPOL authentication has been completed.
 105          */
 106         WPA_ASSOCIATED,
 107
 108         /**
 109          * WPA_4WAY_HANDSHAKE - WPA 4-Way Key Handshake in progress
 110          *
 111          * This state is entered when WPA/WPA2 4-Way Handshake is started. In
 112          * case of WPA-PSK, this happens when receiving the first EAPOL-Key
 113          * frame after association. In case of WPA-EAP, this state is entered
 114          * when the IEEE 802.1X/EAPOL authentication has been completed.
 115          */
 116         WPA_4WAY_HANDSHAKE,
 117
 118         /**
 119          * WPA_GROUP_HANDSHAKE - WPA Group Key Handshake in progress
 120          *
 121          * This state is entered when 4-Way Key Handshake has been completed
 122          * (i.e., when the supplicant sends out message 4/4) and when Group
 123          * Key rekeying is started by the AP (i.e., when supplicant receives
 124          * message 1/2).
 125          */
 126         WPA_GROUP_HANDSHAKE,
 127
 128         /**
 129          * WPA_COMPLETED - All authentication completed
 130          *
 131          * This state is entered when the full authentication process is
 132          * completed. In case of WPA2, this happens when the 4-Way Handshake is
 133          * successfully completed. With WPA, this state is entered after the
 134          * Group Key Handshake; with IEEE 802.1X (non-WPA) connection is
 135          * completed after dynamic keys are received (or if not used, after
 136          * the EAP authentication has been completed). With static WEP keys and
 137          * plaintext connections, this state is entered when an association
 138          * has been completed.
 139          *
 140          * This state indicates that the supplicant has completed its
 141          * processing for the association phase and that data connection is
 142          * fully configured.
 143          */
 144         WPA_COMPLETED,
 145
 146         /**
 147          * WPA_INVALID - Invalid state (parsing error)
 148          *
 149          * This state is returned if the string input is invalid. It is not
 150          * an official wpa_supplicant state.
 151          */
 152         WPA_INVALID,
 153 };
 154
 155 struct supplicant_result {
 156         char *path;
 157         char *name;
 158         unsigned char *addr;
 159         unsigned int addr_len;
 160         unsigned char *ssid;
 161         unsigned int ssid_len;
 162         dbus_uint16_t capabilities;
 163         gboolean adhoc;
 164         gboolean has_wep;
 165         gboolean has_wpa;
 166         gboolean has_rsn;
 167         gboolean has_wps;
 168         dbus_int32_t frequency;
 169         dbus_int32_t quality;
 170         dbus_int32_t noise;
 171         dbus_int32_t level;
 172         dbus_int32_t maxrate;
 173 };
 174
 175 struct supplicant_task {
 176         int ifindex;
 177         char *ifname;
 178         struct connman_device *device;
 179         struct connman_network *network;
 180         struct connman_network *pending_network;
 181         char *path;
 182         char *netpath;
 183         gboolean created;
 184         enum supplicant_state state;
 185         gboolean scanning;
 186         GSList *scan_results;
 187         struct iw_range *range;
 188         gboolean disconnecting;
 189 };
 190
 191 static GSList *task_list = NULL;
 192
 193 static DBusConnection *connection;
 194
 195 static void free_task(struct supplicant_task *task)
 196 {
 197         DBG("task %p", task);
 198
 199         g_free(task->ifname);
 200         g_free(task->path);
 201         g_free(task);
 202 }
 203
 204 static struct supplicant_task *find_task_by_index(int index)
 205 {
 206         GSList *list;
 207
 208         for (list = task_list; list; list = list->next) {
 209                 struct supplicant_task *task = list->data;
 210
 211                 if (task->ifindex == index)
 212                         return task;
 213         }
 214
 215         return NULL;
 216 }
 217
 218 static struct supplicant_task *find_task_by_path(const char *path)
 219 {
 220         GSList *list;
 221
 222         for (list = task_list; list; list = list->next) {
 223                 struct supplicant_task *task = list->data;
 224
 225                 if (g_strcmp0(task->path, path) == 0)
 226                         return task;
 227         }
 228
 229         return NULL;
 230 }
 231
 232 static int get_range(struct supplicant_task *task)
 233 {
 234         struct iwreq wrq;
 235         int fd, err;
 236
 237         fd = socket(PF_INET, SOCK_DGRAM, 0);
 238         if (fd < 0)
 239                 return -1;
 240
 241         memset(&wrq, 0, sizeof(struct iwreq));
 242         strncpy(wrq.ifr_name, task->ifname, IFNAMSIZ);
 243         wrq.u.data.pointer = task->range;
 244         wrq.u.data.length = sizeof(struct iw_range);
 245
 246         err = ioctl(fd, SIOCGIWRANGE, &wrq);
 247
 248         close(fd);
 249
 250         return err;
 251 }
 252
 253 static int get_bssid(struct connman_device *device,
 254                                 unsigned char *bssid, unsigned int *bssid_len)
 255 {
 256         struct iwreq wrq;
 257         char *ifname;
 258         int ifindex;
 259         int fd, err;
 260
 261         ifindex = connman_device_get_index(device);
 262         if (ifindex < 0)
 263                 return -EINVAL;
 264
 265         ifname = connman_inet_ifname(ifindex);
 266         if (ifname == NULL)
 267                 return -EINVAL;
 268
 269         fd = socket(PF_INET, SOCK_DGRAM, 0);
 270         if (fd < 0) {
 271                 g_free(ifname);
 272                 return -EINVAL;
 273         }
 274
 275         memset(&wrq, 0, sizeof(wrq));
 276         strncpy(wrq.ifr_name, ifname, IFNAMSIZ);
 277
 278         err = ioctl(fd, SIOCGIWAP, &wrq);
 279
 280         g_free(ifname);
 281         close(fd);
 282
 283         if (err < 0)
 284                 return -EIO;
 285
 286         memcpy(bssid, wrq.u.ap_addr.sa_data, ETH_ALEN);
 287         *bssid_len = ETH_ALEN;
 288
 289         return 0;
 290 }
 291
 292 static void add_interface_reply(DBusPendingCall *call, void *user_data)
 293 {
 294         struct supplicant_task *task = user_data;
 295         DBusMessage *reply;
 296         DBusError error;
 297         const char *path;
 298
 299         DBG("task %p", task);
 300
 301         reply = dbus_pending_call_steal_reply(call);
 302         if (reply == NULL)
 303                 return;
 304
 305         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR)
 306                 goto failed;
 307
 308         dbus_error_init(&error);
 309
 310         if (dbus_message_get_args(reply, &error, DBUS_TYPE_OBJECT_PATH, &path,
 311                                                 DBUS_TYPE_INVALID) == FALSE) {
 312                 if (dbus_error_is_set(&error) == TRUE) {
 313                         connman_error("%s", error.message);
 314                         dbus_error_free(&error);
 315                 } else
 316                         connman_error("Wrong arguments for add interface");
 317                 goto failed;
 318         }
 319
 320         DBG("path %s", path);
 321
 322         task->path = g_strdup(path);
 323         task->created = TRUE;
 324
 325         connman_device_set_powered(task->device, TRUE);
 326
 327         dbus_message_unref(reply);
 328
 329         return;
 330
 331 failed:
 332         task_list = g_slist_remove(task_list, task);
 333
 334         connman_device_unref(task->device);
 335
 336         free_task(task);
 337 }
 338
 339 static int add_interface(struct supplicant_task *task)
 340 {
 341         const char *driver = connman_option_get_string("wifi");
 342         DBusMessage *message;
 343         DBusMessageIter array, dict;
 344         DBusPendingCall *call;
 345
 346         DBG("task %p", task);
 347
 348         message = dbus_message_new_method_call(SUPPLICANT_NAME, SUPPLICANT_PATH,
 349                                         SUPPLICANT_INTF, "addInterface");
 350         if (message == NULL)
 351                 return -ENOMEM;
 352
 353         dbus_message_set_auto_start(message, FALSE);
 354
 355         dbus_message_iter_init_append(message, &array);
 356
 357         dbus_message_iter_append_basic(&array,
 358                                         DBUS_TYPE_STRING, &task->ifname);
 359
 360         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
 361                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 362                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 363                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 364
 365         connman_dbus_dict_append_variant(&dict, "driver",
 366                                                 DBUS_TYPE_STRING, &driver);
 367
 368         dbus_message_iter_close_container(&array, &dict);
 369
 370         if (dbus_connection_send_with_reply(connection, message,
 371                                                 &call, TIMEOUT) == FALSE) {
 372                 connman_error("Failed to add interface");
 373                 dbus_message_unref(message);
 374                 return -EIO;
 375         }
 376
 377         if (call == NULL) {
 378                 connman_error("D-Bus connection not available");
 379                 dbus_message_unref(message);
 380                 return -EIO;
 381         }
 382
 383         dbus_pending_call_set_notify(call, add_interface_reply, task, NULL);
 384
 385         dbus_message_unref(message);
 386
 387         return -EINPROGRESS;
 388 }
 389
 390 static void get_interface_reply(DBusPendingCall *call, void *user_data)
 391 {
 392         struct supplicant_task *task = user_data;
 393         DBusMessage *reply;
 394         DBusError error;
 395         const char *path;
 396
 397         DBG("task %p", task);
 398
 399         reply = dbus_pending_call_steal_reply(call);
 400         if (reply == NULL)
 401                 return;
 402
 403         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
 404                 add_interface(task);
 405                 goto done;
 406         }
 407
 408         dbus_error_init(&error);
 409
 410         if (dbus_message_get_args(reply, &error, DBUS_TYPE_OBJECT_PATH, &path,
 411                                                 DBUS_TYPE_INVALID) == FALSE) {
 412                 if (dbus_error_is_set(&error) == TRUE) {
 413                         connman_error("%s", error.message);
 414                         dbus_error_free(&error);
 415                 } else
 416                         connman_error("Wrong arguments for get interface");
 417                 goto done;
 418         }
 419
 420         DBG("path %s", path);
 421
 422         task->path = g_strdup(path);
 423         task->created = FALSE;
 424
 425         connman_device_set_powered(task->device, TRUE);
 426
 427 done:
 428         dbus_message_unref(reply);
 429 }
 430
 431 static int create_interface(struct supplicant_task *task)
 432 {
 433         DBusMessage *message;
 434         DBusPendingCall *call;
 435
 436         DBG("task %p", task);
 437
 438         message = dbus_message_new_method_call(SUPPLICANT_NAME, SUPPLICANT_PATH,
 439                                         SUPPLICANT_INTF, "getInterface");
 440         if (message == NULL)
 441                 return -ENOMEM;
 442
 443         dbus_message_set_auto_start(message, FALSE);
 444
 445         dbus_message_append_args(message, DBUS_TYPE_STRING, &task->ifname,
 446                                                         DBUS_TYPE_INVALID);
 447
 448         if (dbus_connection_send_with_reply(connection, message,
 449                                                 &call, TIMEOUT) == FALSE) {
 450                 connman_error("Failed to get interface");
 451                 dbus_message_unref(message);
 452                 return -EIO;
 453         }
 454
 455         if (call == NULL) {
 456                 connman_error("D-Bus connection not available");
 457                 dbus_message_unref(message);
 458                 return -EIO;
 459         }
 460
 461         dbus_pending_call_set_notify(call, get_interface_reply, task, NULL);
 462
 463         dbus_message_unref(message);
 464
 465         return -EINPROGRESS;
 466 }
 467
 468 static void remove_interface_reply(DBusPendingCall *call, void *user_data)
 469 {
 470         struct supplicant_task *task = user_data;
 471         DBusMessage *reply;
 472
 473         DBG("task %p", task);
 474
 475         reply = dbus_pending_call_steal_reply(call);
 476
 477         connman_device_set_powered(task->device, FALSE);
 478
 479         connman_device_unref(task->device);
 480
 481         connman_inet_ifdown(task->ifindex);
 482
 483         free_task(task);
 484
 485         dbus_message_unref(reply);
 486 }
 487
 488 static int remove_interface(struct supplicant_task *task)
 489 {
 490         DBusMessage *message;
 491         DBusPendingCall *call;
 492
 493         DBG("task %p", task);
 494
 495 #if 0
 496         if (task->created == FALSE) {
 497                 connman_device_set_powered(task->device, FALSE);
 498                 return 0;
 499         }
 500 #endif
 501
 502         message = dbus_message_new_method_call(SUPPLICANT_NAME, SUPPLICANT_PATH,
 503                                         SUPPLICANT_INTF, "removeInterface");
 504         if (message == NULL)
 505                 return -ENOMEM;
 506
 507         dbus_message_set_auto_start(message, FALSE);
 508
 509         dbus_message_append_args(message, DBUS_TYPE_OBJECT_PATH, &task->path,
 510                                                         DBUS_TYPE_INVALID);
 511
 512         if (dbus_connection_send_with_reply(connection, message,
 513                                                 &call, TIMEOUT) == FALSE) {
 514                 connman_error("Failed to remove interface");
 515                 dbus_message_unref(message);
 516                 return -EIO;
 517         }
 518
 519         if (call == NULL) {
 520                 connman_error("D-Bus connection not available");
 521                 dbus_message_unref(message);
 522                 return -EIO;
 523         }
 524
 525         dbus_pending_call_set_notify(call, remove_interface_reply, task, NULL);
 526
 527         dbus_message_unref(message);
 528
 529         return -EINPROGRESS;
 530 }
 531
 532 #if 0
 533 static int set_ap_scan(struct supplicant_task *task)
 534 {
 535         DBusMessage *message, *reply;
 536         DBusError error;
 537         guint32 ap_scan = 1;
 538
 539         DBG("task %p", task);
 540
 541         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 542                                 SUPPLICANT_INTF ".Interface", "setAPScan");
 543         if (message == NULL)
 544                 return -ENOMEM;
 545
 546         dbus_message_set_auto_start(message, FALSE);
 547
 548         dbus_message_append_args(message, DBUS_TYPE_UINT32, &ap_scan,
 549                                                         DBUS_TYPE_INVALID);
 550
 551         dbus_error_init(&error);
 552
 553         reply = dbus_connection_send_with_reply_and_block(connection,
 554                                                         message, -1, &error);
 555         if (reply == NULL) {
 556                 if (dbus_error_is_set(&error) == TRUE) {
 557                         connman_error("%s", error.message);
 558                         dbus_error_free(&error);
 559                 } else
 560                         connman_error("Failed to set AP scan");
 561                 dbus_message_unref(message);
 562                 return -EIO;
 563         }
 564
 565         dbus_message_unref(message);
 566
 567         dbus_message_unref(reply);
 568
 569         return 0;
 570 }
 571 #endif
 572
 573 static int add_network(struct supplicant_task *task)
 574 {
 575         DBusMessage *message, *reply;
 576         DBusError error;
 577         const char *path;
 578
 579         DBG("task %p", task);
 580
 581         if (task->netpath != NULL)
 582                 return -EALREADY;
 583
 584         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 585                                 SUPPLICANT_INTF ".Interface", "addNetwork");
 586         if (message == NULL)
 587                 return -ENOMEM;
 588
 589         dbus_message_set_auto_start(message, FALSE);
 590
 591         dbus_error_init(&error);
 592
 593         reply = dbus_connection_send_with_reply_and_block(connection,
 594                                                         message, -1, &error);
 595         if (reply == NULL) {
 596                 if (dbus_error_is_set(&error) == TRUE) {
 597                         connman_error("%s", error.message);
 598                         dbus_error_free(&error);
 599                 } else
 600                         connman_error("Failed to add network");
 601                 dbus_message_unref(message);
 602                 return -EIO;
 603         }
 604
 605         dbus_message_unref(message);
 606
 607         dbus_error_init(&error);
 608
 609         if (dbus_message_get_args(reply, &error, DBUS_TYPE_OBJECT_PATH, &path,
 610                                                 DBUS_TYPE_INVALID) == FALSE) {
 611                 if (dbus_error_is_set(&error) == TRUE) {
 612                         connman_error("%s", error.message);
 613                         dbus_error_free(&error);
 614                 } else
 615                         connman_error("Wrong arguments for network");
 616                 dbus_message_unref(reply);
 617                 return -EIO;
 618         }
 619
 620         DBG("path %s", path);
 621
 622         task->netpath = g_strdup(path);
 623
 624         dbus_message_unref(reply);
 625
 626         return 0;
 627 }
 628
 629 static int remove_network(struct supplicant_task *task)
 630 {
 631         DBusMessage *message, *reply;
 632         DBusError error;
 633
 634         DBG("task %p", task);
 635
 636         if (task->netpath == NULL)
 637                 return -EINVAL;
 638
 639         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 640                                 SUPPLICANT_INTF ".Interface", "removeNetwork");
 641         if (message == NULL)
 642                 return -ENOMEM;
 643
 644         dbus_message_set_auto_start(message, FALSE);
 645
 646         dbus_message_append_args(message, DBUS_TYPE_OBJECT_PATH, &task->netpath,
 647                                                         DBUS_TYPE_INVALID);
 648
 649         dbus_error_init(&error);
 650
 651         reply = dbus_connection_send_with_reply_and_block(connection,
 652                                                         message, -1, &error);
 653         if (reply == NULL) {
 654                 if (dbus_error_is_set(&error) == TRUE) {
 655                         connman_error("%s", error.message);
 656                         dbus_error_free(&error);
 657                 } else
 658                         connman_error("Failed to remove network");
 659                 dbus_message_unref(message);
 660                 return -EIO;
 661         }
 662
 663         dbus_message_unref(message);
 664
 665         dbus_message_unref(reply);
 666
 667         g_free(task->netpath);
 668         task->netpath = NULL;
 669
 670         return 0;
 671 }
 672
 673 static int select_network(struct supplicant_task *task)
 674 {
 675         DBusMessage *message, *reply;
 676         DBusError error;
 677
 678         DBG("task %p", task);
 679
 680         if (task->netpath == NULL)
 681                 return -EINVAL;
 682
 683         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 684                                 SUPPLICANT_INTF ".Interface", "selectNetwork");
 685         if (message == NULL)
 686                 return -ENOMEM;
 687
 688         dbus_message_set_auto_start(message, FALSE);
 689
 690         dbus_message_append_args(message, DBUS_TYPE_OBJECT_PATH, &task->netpath,
 691                                                         DBUS_TYPE_INVALID);
 692
 693         dbus_error_init(&error);
 694
 695         reply = dbus_connection_send_with_reply_and_block(connection,
 696                                                         message, -1, &error);
 697         if (reply == NULL) {
 698                 if (dbus_error_is_set(&error) == TRUE) {
 699                         connman_error("%s", error.message);
 700                         dbus_error_free(&error);
 701                 } else
 702                         connman_error("Failed to select network");
 703                 dbus_message_unref(message);
 704                 return -EIO;
 705         }
 706
 707         dbus_message_unref(message);
 708
 709         dbus_message_unref(reply);
 710
 711         return 0;
 712 }
 713
 714 static int enable_network(struct supplicant_task *task)
 715 {
 716         DBusMessage *message, *reply;
 717         DBusError error;
 718
 719         DBG("task %p", task);
 720
 721         if (task->netpath == NULL)
 722                 return -EINVAL;
 723
 724         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->netpath,
 725                                         SUPPLICANT_INTF ".Network", "enable");
 726         if (message == NULL)
 727                 return -ENOMEM;
 728
 729         dbus_message_set_auto_start(message, FALSE);
 730
 731         dbus_error_init(&error);
 732
 733         reply = dbus_connection_send_with_reply_and_block(connection,
 734                                                         message, -1, &error);
 735         if (reply == NULL) {
 736                 if (dbus_error_is_set(&error) == TRUE) {
 737                         connman_error("%s", error.message);
 738                         dbus_error_free(&error);
 739                 } else
 740                         connman_error("Failed to enable network");
 741                 dbus_message_unref(message);
 742                 return -EIO;
 743         }
 744
 745         dbus_message_unref(message);
 746
 747         dbus_message_unref(reply);
 748
 749         return 0;
 750 }
 751
 752 static int disable_network(struct supplicant_task *task)
 753 {
 754         DBusMessage *message, *reply;
 755         DBusError error;
 756
 757         DBG("task %p", task);
 758
 759         if (task->netpath == NULL)
 760                 return -EINVAL;
 761
 762         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->netpath,
 763                                         SUPPLICANT_INTF ".Network", "disable");
 764         if (message == NULL)
 765                 return -ENOMEM;
 766
 767         dbus_message_set_auto_start(message, FALSE);
 768
 769         dbus_error_init(&error);
 770
 771         reply = dbus_connection_send_with_reply_and_block(connection,
 772                                                         message, -1, &error);
 773         if (reply == NULL) {
 774                 if (dbus_error_is_set(&error) == TRUE) {
 775                         connman_error("%s", error.message);
 776                         dbus_error_free(&error);
 777                 } else
 778                         connman_error("Failed to disable network");
 779                 dbus_message_unref(message);
 780                 return -EIO;
 781         }
 782
 783         dbus_message_unref(message);
 784
 785         dbus_message_unref(reply);
 786
 787         return 0;
 788 }
 789
 790 static int set_network(struct supplicant_task *task,
 791                                 const unsigned char *network, int len,
 792                                 const char *address, const char *security,
 793                                                         const char *passphrase)
 794 {
 795         DBusMessage *message, *reply;
 796         DBusMessageIter array, dict;
 797         DBusError error;
 798         dbus_uint32_t scan_ssid = 1;
 799
 800         DBG("task %p", task);
 801
 802         if (task->netpath == NULL)
 803                 return -EINVAL;
 804
 805         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->netpath,
 806                                         SUPPLICANT_INTF ".Network", "set");
 807         if (message == NULL)
 808                 return -ENOMEM;
 809
 810         dbus_message_set_auto_start(message, FALSE);
 811
 812         dbus_message_iter_init_append(message, &array);
 813
 814         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
 815                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 816                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 817                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 818
 819         connman_dbus_dict_append_variant(&dict, "scan_ssid",
 820                                          DBUS_TYPE_UINT32, &scan_ssid);
 821
 822         if (address)
 823                 connman_dbus_dict_append_variant(&dict, "bssid",
 824                                                 DBUS_TYPE_STRING, &address);
 825
 826         connman_dbus_dict_append_array(&dict, "ssid",
 827                                         DBUS_TYPE_BYTE, &network, len);
 828
 829         if (g_ascii_strcasecmp(security, "wpa") == 0 ||
 830                                 g_ascii_strcasecmp(security, "rsn") == 0) {
 831                 const char *key_mgmt = "WPA-PSK";
 832                 connman_dbus_dict_append_variant(&dict, "key_mgmt",
 833                                                 DBUS_TYPE_STRING, &key_mgmt);
 834
 835                 if (passphrase && strlen(passphrase) > 0)
 836                         connman_dbus_dict_append_variant(&dict, "psk",
 837                                                 DBUS_TYPE_STRING, &passphrase);
 838         } else if (g_ascii_strcasecmp(security, "wep") == 0) {
 839                 const char *key_mgmt = "NONE";
 840                 const char *auth_alg = "OPEN SHARED";
 841                 const char *key_index = "0";
 842
 843                 connman_dbus_dict_append_variant(&dict, "auth_alg",
 844                                                 DBUS_TYPE_STRING, &auth_alg);
 845
 846                 connman_dbus_dict_append_variant(&dict, "key_mgmt",
 847                                                 DBUS_TYPE_STRING, &key_mgmt);
 848
 849                 if (passphrase) {
 850                         int size = strlen(passphrase);
 851                         if (size == 10 || size == 26) {
 852                                 unsigned char *key = malloc(13);
 853                                 char tmp[3];
 854                                 int i;
 855                                 memset(tmp, 0, sizeof(tmp));
 856                                 if (key == NULL)
 857                                         size = 0;
 858                                 for (i = 0; i < size / 2; i++) {
 859                                         memcpy(tmp, passphrase + (i * 2), 2);
 860                                         key[i] = (unsigned char) strtol(tmp,
 861                                                                 NULL, 16);
 862                                 }
 863                                 connman_dbus_dict_append_array(&dict,
 864                                                 "wep_key0", DBUS_TYPE_BYTE,
 865                                                         &key, size / 2);
 866                                 free(key);
 867                         } else
 868                                 connman_dbus_dict_append_variant(&dict,
 869                                                 "wep_key0", DBUS_TYPE_STRING,
 870                                                                 &passphrase);
 871
 872                         connman_dbus_dict_append_variant(&dict, "wep_tx_keyidx",
 873                                                 DBUS_TYPE_STRING, &key_index);
 874                 }
 875         } else {
 876                 const char *key_mgmt = "NONE";
 877                 connman_dbus_dict_append_variant(&dict, "key_mgmt",
 878                                                 DBUS_TYPE_STRING, &key_mgmt);
 879         }
 880
 881         dbus_message_iter_close_container(&array, &dict);
 882
 883         dbus_error_init(&error);
 884
 885         reply = dbus_connection_send_with_reply_and_block(connection,
 886                                                         message, -1, &error);
 887         if (reply == NULL) {
 888                 if (dbus_error_is_set(&error) == TRUE) {
 889                         connman_error("%s", error.message);
 890                         dbus_error_free(&error);
 891                 } else
 892                         connman_error("Failed to set network options");
 893                 dbus_message_unref(message);
 894                 return -EIO;
 895         }
 896
 897         dbus_message_unref(message);
 898
 899         dbus_message_unref(reply);
 900
 901         return 0;
 902 }
 903
 904 static int initiate_scan(struct supplicant_task *task)
 905 {
 906         DBusMessage *message;
 907         DBusPendingCall *call;
 908
 909         DBG("task %p", task);
 910
 911         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
 912                                         SUPPLICANT_INTF ".Interface", "scan");
 913         if (message == NULL)
 914                 return -ENOMEM;
 915
 916         dbus_message_set_auto_start(message, FALSE);
 917
 918         if (dbus_connection_send_with_reply(connection, message,
 919                                                 &call, TIMEOUT) == FALSE) {
 920                 connman_error("Failed to initiate scan");
 921                 dbus_message_unref(message);
 922                 return -EIO;
 923         }
 924
 925         dbus_message_unref(message);
 926
 927         return 0;
 928 }
 929
 930 static struct {
 931         char *name;
 932         char *value;
 933 } special_ssid[] = {
 934         { "<hidden>", "hidden"  },
 935         { "default",  "linksys" },
 936         { "wireless"  },
 937         { "linksys"   },
 938         { "netgear"   },
 939         { "dlink"     },
 940         { "2wire"     },
 941         { "compaq"    },
 942         { "tsunami"   },
 943         { "comcomcom", "3com"     },
 944         { "3Com",      "3com"     },
 945         { "Symbol",    "symbol"   },
 946         { "Motorola",  "motorola" },
 947         { "Wireless" , "wireless" },
 948         { "WLAN",      "wlan"     },
 949         { }
 950 };
 951
 952 static char *build_group(const char *addr, const char *name,
 953                         const unsigned char *ssid, unsigned int ssid_len,
 954                                         const char *mode, const char *security)
 955 {
 956         GString *str;
 957         unsigned int i;
 958
 959         if (addr == NULL)
 960                 return NULL;
 961
 962         str = g_string_sized_new((ssid_len * 2) + 24);
 963         if (str == NULL)
 964                 return NULL;
 965
 966         if (ssid == NULL) {
 967                 g_string_append_printf(str, "hidden_%s", addr);
 968                 goto done;
 969         }
 970
 971         for (i = 0; special_ssid[i].name; i++) {
 972                 if (g_strcmp0(special_ssid[i].name, name) == 0) {
 973                         if (special_ssid[i].value == NULL)
 974                                 g_string_append_printf(str, "%s_%s",
 975                                                                 name, addr);
 976                         else
 977                                 g_string_append_printf(str, "%s_%s",
 978                                                 special_ssid[i].value, addr);
 979                         goto done;
 980                 }
 981         }
 982
 983         if (ssid_len > 0 && ssid[0] != '\0') {
 984                 for (i = 0; i < ssid_len; i++)
 985                         g_string_append_printf(str, "%02x", ssid[i]);
 986         } else
 987                 g_string_append_printf(str, "hidden_%s", addr);
 988
 989 done:
 990         g_string_append_printf(str, "_%s_%s", mode, security);
 991
 992         return g_string_free(str, FALSE);
 993 }
 994
 995 static void extract_addr(DBusMessageIter *value,
 996                                         struct supplicant_result *result)
 997 {
 998         DBusMessageIter array;
 999         struct ether_addr eth;
1000         unsigned char *addr;
1001         int addr_len;
1002
1003         dbus_message_iter_recurse(value, &array);
1004         dbus_message_iter_get_fixed_array(&array, &addr, &addr_len);
1005
1006         if (addr_len != 6)
1007                 return;
1008
1009         result->addr = g_try_malloc(addr_len);
1010         if (result->addr == NULL)
1011                 return;
1012
1013         memcpy(result->addr, addr, addr_len);
1014         result->addr_len = addr_len;
1015
1016         result->path = g_try_malloc0(13);
1017         if (result->path == NULL)
1018                 return;
1019
1020         memcpy(&eth, addr, sizeof(eth));
1021         snprintf(result->path, 13, "%02x%02x%02x%02x%02x%02x",
1022                                                 eth.ether_addr_octet[0],
1023                                                 eth.ether_addr_octet[1],
1024                                                 eth.ether_addr_octet[2],
1025                                                 eth.ether_addr_octet[3],
1026                                                 eth.ether_addr_octet[4],
1027                                                 eth.ether_addr_octet[5]);
1028 }
1029
1030 static void extract_ssid(DBusMessageIter *value,
1031                                         struct supplicant_result *result)
1032 {
1033         DBusMessageIter array;
1034         unsigned char *ssid;
1035         int ssid_len, i;
1036
1037         dbus_message_iter_recurse(value, &array);
1038         dbus_message_iter_get_fixed_array(&array, &ssid, &ssid_len);
1039
1040         if (ssid_len < 1)
1041                 return;
1042
1043         if (ssid[0] == '\0')
1044                 return;
1045
1046         result->ssid = g_try_malloc(ssid_len);
1047         if (result->ssid == NULL)
1048                 return;
1049
1050         memcpy(result->ssid, ssid, ssid_len);
1051         result->ssid_len = ssid_len;
1052
1053         result->name = g_try_malloc0(ssid_len + 1);
1054         if (result->name == NULL)
1055                 return;
1056
1057         for (i = 0; i < ssid_len; i++) {
1058                 if (g_ascii_isprint(ssid[i]))
1059                         result->name[i] = ssid[i];
1060                 else
1061                         result->name[i] = ' ';
1062         }
1063 }
1064
1065 static void extract_wpaie(DBusMessageIter *value,
1066                                         struct supplicant_result *result)
1067 {
1068         DBusMessageIter array;
1069         unsigned char *ie;
1070         int ie_len;
1071
1072         dbus_message_iter_recurse(value, &array);
1073         dbus_message_iter_get_fixed_array(&array, &ie, &ie_len);
1074
1075         if (ie_len > 0)
1076                 result->has_wpa = TRUE;
1077 }
1078
1079 static void extract_rsnie(DBusMessageIter *value,
1080                                         struct supplicant_result *result)
1081 {
1082         DBusMessageIter array;
1083         unsigned char *ie;
1084         int ie_len;
1085
1086         dbus_message_iter_recurse(value, &array);
1087         dbus_message_iter_get_fixed_array(&array, &ie, &ie_len);
1088
1089         if (ie_len > 0)
1090                 result->has_rsn = TRUE;
1091 }
1092
1093 static void extract_wpsie(DBusMessageIter *value,
1094                                         struct supplicant_result *result)
1095 {
1096         DBusMessageIter array;
1097         unsigned char *ie;
1098         int ie_len;
1099
1100         dbus_message_iter_recurse(value, &array);
1101         dbus_message_iter_get_fixed_array(&array, &ie, &ie_len);
1102
1103         if (ie_len > 0)
1104                 result->has_wps = TRUE;
1105 }
1106
1107 static void extract_capabilites(DBusMessageIter *value,
1108                                         struct supplicant_result *result)
1109 {
1110         dbus_message_iter_get_basic(value, &result->capabilities);
1111
1112         if (result->capabilities & IEEE80211_CAP_ESS)
1113                 result->adhoc = FALSE;
1114         else if (result->capabilities & IEEE80211_CAP_IBSS)
1115                 result->adhoc = TRUE;
1116
1117         if (result->capabilities & IEEE80211_CAP_PRIVACY)
1118                 result->has_wep = TRUE;
1119 }
1120
1121 static unsigned char calculate_strength(struct supplicant_task *task,
1122                                         struct supplicant_result *result)
1123 {
1124         if (task->range->max_qual.qual == 0) {
1125                 unsigned char strength;
1126
1127                 if (result->level > 0)
1128                         strength = 100 - result->level;
1129                 else
1130                         strength = 120 + result->level;
1131
1132                 if (strength > 100)
1133                         strength = 100;
1134
1135                 return strength;
1136         }
1137
1138         return (result->quality * 100) / task->range->max_qual.qual;
1139 }
1140
1141 static unsigned short calculate_channel(struct supplicant_result *result)
1142 {
1143         if (result->frequency < 0)
1144                 return 0;
1145
1146         return (result->frequency - 2407) / 5;
1147 }
1148
1149 static void get_properties(struct supplicant_task *task);
1150
1151 static void properties_reply(DBusPendingCall *call, void *user_data)
1152 {
1153         struct supplicant_task *task = user_data;
1154         struct supplicant_result result;
1155         struct connman_network *network;
1156         DBusMessage *reply;
1157         DBusMessageIter array, dict;
1158         unsigned char strength;
1159         unsigned short channel, frequency;
1160         const char *mode, *security;
1161         char *group = NULL;
1162         unsigned int ssid_len;
1163
1164         DBG("task %p", task);
1165
1166         reply = dbus_pending_call_steal_reply(call);
1167         if (reply == NULL) {
1168                 get_properties(task);
1169                 return;
1170         }
1171
1172         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
1173                 dbus_message_unref(reply);
1174                 get_properties(task);
1175                 return;
1176         }
1177
1178         memset(&result, 0, sizeof(result));
1179         result.frequency = -1;
1180         result.quality = -1;
1181         result.level = 0;
1182         result.noise = 0;
1183
1184         dbus_message_iter_init(reply, &array);
1185
1186         dbus_message_iter_recurse(&array, &dict);
1187
1188         while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
1189                 DBusMessageIter entry, value;
1190                 const char *key;
1191
1192                 dbus_message_iter_recurse(&dict, &entry);
1193                 dbus_message_iter_get_basic(&entry, &key);
1194
1195                 dbus_message_iter_next(&entry);
1196
1197                 dbus_message_iter_recurse(&entry, &value);
1198
1199                 //type = dbus_message_iter_get_arg_type(&value);
1200                 //dbus_message_iter_get_basic(&value, &val);
1201
1202                 /*
1203                  * bssid        : a (97)
1204                  * ssid         : a (97)
1205                  * wpaie        : a (97)
1206                  * rsnie        : a (97)
1207                  * wpsie        : a (97)
1208                  * frequency    : i (105)
1209                  * capabilities : q (113)
1210                  * quality      : i (105)
1211                  * noise        : i (105)
1212                  * level        : i (105)
1213                  * maxrate      : i (105)
1214                  */
1215
1216                 if (g_str_equal(key, "bssid") == TRUE)
1217                         extract_addr(&value, &result);
1218                 else if (g_str_equal(key, "ssid") == TRUE)
1219                         extract_ssid(&value, &result);
1220                 else if (g_str_equal(key, "wpaie") == TRUE)
1221                         extract_wpaie(&value, &result);
1222                 else if (g_str_equal(key, "rsnie") == TRUE)
1223                         extract_rsnie(&value, &result);
1224                 else if (g_str_equal(key, "wpsie") == TRUE)
1225                         extract_wpsie(&value, &result);
1226                 else if (g_str_equal(key, "capabilities") == TRUE)
1227                         extract_capabilites(&value, &result);
1228                 else if (g_str_equal(key, "frequency") == TRUE)
1229                         dbus_message_iter_get_basic(&value, &result.frequency);
1230                 else if (g_str_equal(key, "quality") == TRUE)
1231                         dbus_message_iter_get_basic(&value, &result.quality);
1232                 else if (g_str_equal(key, "noise") == TRUE)
1233                         dbus_message_iter_get_basic(&value, &result.noise);
1234                 else if (g_str_equal(key, "level") == TRUE)
1235                         dbus_message_iter_get_basic(&value, &result.level);
1236                 else if (g_str_equal(key, "maxrate") == TRUE)
1237                         dbus_message_iter_get_basic(&value, &result.maxrate);
1238
1239                 dbus_message_iter_next(&dict);
1240         }
1241
1242         if (result.path == NULL)
1243                 goto done;
1244
1245         if (result.path[0] == '\0')
1246                 goto done;
1247
1248         if (result.frequency > 0 && result.frequency < 14)
1249                 result.frequency = 2407 + (5 * result.frequency);
1250         else if (result.frequency == 14)
1251                 result.frequency = 2484;
1252
1253         strength = calculate_strength(task, &result);
1254         channel  = calculate_channel(&result);
1255
1256         frequency = (result.frequency < 0) ? 0 : result.frequency;
1257
1258         if (result.has_rsn == TRUE)
1259                 security = "rsn";
1260         else if (result.has_wpa == TRUE)
1261                 security = "wpa";
1262         else if (result.has_wep == TRUE)
1263                 security = "wep";
1264         else
1265                 security = "none";
1266
1267         mode = (result.adhoc == TRUE) ? "adhoc" : "managed";
1268
1269         group = build_group(result.path, result.name,
1270                                         result.ssid, result.ssid_len,
1271                                                         mode, security);
1272
1273         network = connman_device_get_network(task->device, result.path);
1274         if (network == NULL) {
1275                 int index;
1276
1277                 network = connman_network_create(result.path,
1278                                                 CONNMAN_NETWORK_TYPE_WIFI);
1279                 if (network == NULL)
1280                         goto done;
1281
1282                 index = connman_device_get_index(task->device);
1283                 connman_network_set_index(network, index);
1284
1285                 connman_network_set_protocol(network,
1286                                                 CONNMAN_NETWORK_PROTOCOL_IP);
1287
1288                 connman_network_set_address(network, result.addr,
1289                                                         result.addr_len);
1290
1291                 if (connman_device_add_network(task->device, network) < 0) {
1292                         connman_network_unref(network);
1293                         goto done;
1294                 }
1295         }
1296
1297         if (result.name != NULL && result.name[0] != '\0')
1298                 connman_network_set_name(network, result.name);
1299
1300         if (connman_network_get_blob(network, "WiFi.SSID", &ssid_len) == NULL) {
1301                 connman_network_set_blob(network, "WiFi.SSID",
1302                                          result.ssid, result.ssid_len);
1303         }
1304
1305         connman_network_set_string(network, "WiFi.Mode", mode);
1306
1307         DBG("%s (%s %s) strength %d (%s)",
1308                                 result.name, mode, security, strength,
1309                                 (result.has_wps == TRUE) ? "WPS" : "no WPS");
1310
1311         connman_network_set_available(network, TRUE);
1312         connman_network_set_strength(network, strength);
1313
1314         connman_network_set_uint16(network, "Frequency", frequency);
1315         connman_network_set_uint16(network, "WiFi.Channel", channel);
1316         connman_network_set_string(network, "WiFi.Security", security);
1317
1318         if (result.ssid != NULL)
1319                 connman_network_set_group(network, group);
1320
1321 done:
1322         g_free(group);
1323
1324         g_free(result.path);
1325         g_free(result.addr);
1326         g_free(result.name);
1327         g_free(result.ssid);
1328
1329         dbus_message_unref(reply);
1330
1331         get_properties(task);
1332 }
1333
1334 static void get_properties(struct supplicant_task *task)
1335 {
1336         DBusMessage *message;
1337         DBusPendingCall *call;
1338         char *path;
1339
1340         path = g_slist_nth_data(task->scan_results, 0);
1341         if (path == NULL)
1342                 goto noscan;
1343
1344         message = dbus_message_new_method_call(SUPPLICANT_NAME, path,
1345                                                 SUPPLICANT_INTF ".BSSID",
1346                                                                 "properties");
1347
1348         task->scan_results = g_slist_remove(task->scan_results, path);
1349         g_free(path);
1350
1351         if (message == NULL)
1352                 goto noscan;
1353
1354         dbus_message_set_auto_start(message, FALSE);
1355
1356         if (dbus_connection_send_with_reply(connection, message,
1357                                                 &call, TIMEOUT) == FALSE) {
1358                 connman_error("Failed to get network properties");
1359                 dbus_message_unref(message);
1360                 goto noscan;
1361         }
1362
1363         if (call == NULL) {
1364                 connman_error("D-Bus connection not available");
1365                 dbus_message_unref(message);
1366                 goto noscan;
1367         }
1368
1369         dbus_pending_call_set_notify(call, properties_reply, task, NULL);
1370
1371         dbus_message_unref(message);
1372
1373         return;
1374
1375 noscan:
1376         if (task->scanning == TRUE) {
1377                 connman_device_set_scanning(task->device, FALSE);
1378                 task->scanning = FALSE;
1379         }
1380 }
1381
1382 static void scan_results_reply(DBusPendingCall *call, void *user_data)
1383 {
1384         struct supplicant_task *task = user_data;
1385         DBusMessage *reply;
1386         DBusError error;
1387         char **results;
1388         int i, num_results;
1389
1390         DBG("task %p", task);
1391
1392         reply = dbus_pending_call_steal_reply(call);
1393         if (reply == NULL)
1394                 goto noscan;
1395
1396         if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR)
1397                 goto done;
1398
1399         dbus_error_init(&error);
1400
1401         if (dbus_message_get_args(reply, &error,
1402                                 DBUS_TYPE_ARRAY, DBUS_TYPE_OBJECT_PATH,
1403                                                 &results, &num_results,
1404                                                 DBUS_TYPE_INVALID) == FALSE) {
1405                 if (dbus_error_is_set(&error) == TRUE) {
1406                         connman_error("%s", error.message);
1407                         dbus_error_free(&error);
1408                 } else
1409                         connman_error("Wrong arguments for scan result");
1410                 goto done;
1411         }
1412
1413         if (num_results == 0)
1414                 goto done;
1415
1416         for (i = 0; i < num_results; i++) {
1417                 char *path = g_strdup(results[i]);
1418                 if (path == NULL)
1419                         continue;
1420
1421                 task->scan_results = g_slist_append(task->scan_results, path);
1422         }
1423
1424         g_strfreev(results);
1425
1426         dbus_message_unref(reply);
1427
1428         get_properties(task);
1429
1430         return;
1431
1432 done:
1433         dbus_message_unref(reply);
1434
1435 noscan:
1436         if (task->scanning == TRUE) {
1437                 connman_device_set_scanning(task->device, FALSE);
1438                 task->scanning = FALSE;
1439         }
1440 }
1441
1442 static void scan_results_available(struct supplicant_task *task)
1443 {
1444         DBusMessage *message;
1445         DBusPendingCall *call;
1446
1447         DBG("task %p", task);
1448
1449         message = dbus_message_new_method_call(SUPPLICANT_NAME, task->path,
1450                                                 SUPPLICANT_INTF ".Interface",
1451                                                         "scanResults");
1452         if (message == NULL)
1453                 return;
1454
1455         dbus_message_set_auto_start(message, FALSE);
1456
1457         if (dbus_connection_send_with_reply(connection, message,
1458                                                 &call, TIMEOUT) == FALSE) {
1459                 connman_error("Failed to request scan result");
1460                 goto done;
1461         }
1462
1463         if (call == NULL) {
1464                 connman_error("D-Bus connection not available");
1465                 goto done;
1466         }
1467
1468         if (task->scanning == TRUE)
1469                 connman_device_set_scanning(task->device, TRUE);
1470
1471         dbus_pending_call_set_notify(call, scan_results_reply, task, NULL);
1472
1473 done:
1474         dbus_message_unref(message);
1475 }
1476
1477 static enum supplicant_state string2state(const char *state)
1478 {
1479         if (g_str_equal(state, "INACTIVE") == TRUE)
1480                 return WPA_INACTIVE;
1481         else if (g_str_equal(state, "SCANNING") == TRUE)
1482                 return WPA_SCANNING;
1483         else if (g_str_equal(state, "ASSOCIATING") == TRUE)
1484                 return WPA_ASSOCIATING;
1485         else if (g_str_equal(state, "ASSOCIATED") == TRUE)
1486                 return WPA_ASSOCIATED;
1487         else if (g_str_equal(state, "GROUP_HANDSHAKE") == TRUE)
1488                 return WPA_GROUP_HANDSHAKE;
1489         else if (g_str_equal(state, "4WAY_HANDSHAKE") == TRUE)
1490                 return WPA_4WAY_HANDSHAKE;
1491         else if (g_str_equal(state, "COMPLETED") == TRUE)
1492                 return WPA_COMPLETED;
1493         else if (g_str_equal(state, "DISCONNECTED") == TRUE)
1494                 return WPA_DISCONNECTED;
1495         else
1496                 return WPA_INVALID;
1497 }
1498
1499 static int task_connect(struct supplicant_task *task)
1500 {
1501         const char *address, *security, *passphrase;
1502         const void *ssid;
1503         unsigned int ssid_len;
1504         int err;
1505
1506         address = connman_network_get_string(task->network, "Address");
1507         security = connman_network_get_string(task->network, "WiFi.Security");
1508         passphrase = connman_network_get_string(task->network, "WiFi.Passphrase");
1509
1510         ssid = connman_network_get_blob(task->network, "WiFi.SSID", &ssid_len);
1511
1512         DBG("address %s security %s passphrase %s",
1513                                         address, security, passphrase);
1514
1515         if (security == NULL && passphrase == NULL)
1516                 return -EINVAL;
1517
1518         if (g_str_equal(security, "none") == FALSE && passphrase == NULL)
1519                 return -EINVAL;
1520
1521         add_network(task);
1522
1523         select_network(task);
1524         disable_network(task);
1525
1526         set_network(task, ssid, ssid_len, address, security, passphrase);
1527
1528         err = enable_network(task);
1529         if (err < 0)
1530                 return err;
1531
1532         return -EINPROGRESS;
1533 }
1534
1535 static void state_change(struct supplicant_task *task, DBusMessage *msg)
1536 {
1537         DBusError error;
1538         const char *newstate, *oldstate;
1539         unsigned char bssid[ETH_ALEN];
1540         unsigned int bssid_len;
1541         enum supplicant_state state;
1542
1543         dbus_error_init(&error);
1544
1545         if (dbus_message_get_args(msg, &error, DBUS_TYPE_STRING, &newstate,
1546                                                 DBUS_TYPE_STRING, &oldstate,
1547                                                 DBUS_TYPE_INVALID) == FALSE) {
1548                 if (dbus_error_is_set(&error) == TRUE) {
1549                         connman_error("%s", error.message);
1550                         dbus_error_free(&error);
1551                 } else
1552                         connman_error("Wrong arguments for state change");
1553                 return;
1554         }
1555
1556         DBG("state %s ==> %s", oldstate, newstate);
1557
1558         state = string2state(newstate);
1559         if (state == WPA_INVALID)
1560                 return;
1561
1562         if (task->scanning == TRUE && state != WPA_SCANNING) {
1563                 connman_device_set_scanning(task->device, FALSE);
1564                 task->scanning = FALSE;
1565         }
1566
1567         task->state = state;
1568
1569         if (task->network == NULL)
1570                 return;
1571
1572         switch (task->state) {
1573         case WPA_COMPLETED:
1574                 if (get_bssid(task->device, bssid, &bssid_len) == 0)
1575                         connman_network_set_address(task->network,
1576                                                         bssid, bssid_len);
1577
1578                 /* carrier on */
1579                 connman_network_set_connected(task->network, TRUE);
1580                 break;
1581
1582         case WPA_DISCONNECTED:
1583                 disable_network(task);
1584
1585                 /* carrier off */
1586                 connman_network_set_connected(task->network, FALSE);
1587
1588                 if (task->disconnecting == TRUE) {
1589                         connman_network_unref(task->network);
1590                         task->disconnecting = FALSE;
1591
1592                         if (task->pending_network != NULL) {
1593                                 task->network = task->pending_network;
1594                                 task->pending_network = NULL;
1595                                 task_connect(task);
1596                         }
1597                 }
1598                 break;
1599
1600         case WPA_ASSOCIATING:
1601                 connman_network_set_associating(task->network, TRUE);
1602                 break;
1603
1604         case WPA_INACTIVE:
1605                 connman_network_set_connected(task->network, FALSE);
1606
1607                 if (task->disconnecting == TRUE) {
1608                         connman_network_unref(task->network);
1609                         task->disconnecting = FALSE;
1610
1611                         if (task->pending_network != NULL) {
1612                                 task->network = task->pending_network;
1613                                 task->pending_network = NULL;
1614                                 task_connect(task);
1615                         }
1616                 }
1617                 break;
1618
1619         default:
1620                 connman_network_set_associating(task->network, FALSE);
1621                 break;
1622         }
1623 }
1624
1625 static DBusHandlerResult supplicant_filter(DBusConnection *conn,
1626                                                 DBusMessage *msg, void *data)
1627 {
1628         struct supplicant_task *task;
1629         const char *member, *path;
1630
1631         if (dbus_message_has_interface(msg,
1632                                 SUPPLICANT_INTF ".Interface") == FALSE)
1633                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1634
1635         member = dbus_message_get_member(msg);
1636         if (member == NULL)
1637                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1638
1639         path = dbus_message_get_path(msg);
1640         if (path == NULL)
1641                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1642
1643         task = find_task_by_path(path);
1644         if (task == NULL)
1645                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1646
1647         DBG("task %p member %s", task, member);
1648
1649         if (g_str_equal(member, "ScanResultsAvailable") == TRUE)
1650                 scan_results_available(task);
1651         else if (g_str_equal(member, "StateChange") == TRUE)
1652                 state_change(task, msg);
1653
1654         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1655 }
1656
1657 int supplicant_start(struct connman_device *device)
1658 {
1659         struct supplicant_task *task;
1660         int err;
1661
1662         DBG("device %p", device);
1663
1664         task = g_try_new0(struct supplicant_task, 1);
1665         if (task == NULL)
1666                 return -ENOMEM;
1667
1668         task->ifindex = connman_device_get_index(device);
1669         task->ifname = connman_inet_ifname(task->ifindex);
1670
1671         if (task->ifname == NULL) {
1672                 err = -ENOMEM;
1673                 goto failed;
1674         }
1675
1676         task->range = g_try_malloc0(sizeof(struct iw_range));
1677         if (task->range == NULL) {
1678                 err = -ENOMEM;
1679                 goto failed;
1680         }
1681
1682         err = get_range(task);
1683         if (err < 0)
1684                 goto failed;
1685
1686         task->device = connman_device_ref(device);
1687
1688         task->created = FALSE;
1689         task->scanning = FALSE;
1690         task->state = WPA_INVALID;
1691         task->disconnecting = FALSE;
1692         task->pending_network = NULL;
1693
1694         task_list = g_slist_append(task_list, task);
1695
1696         return create_interface(task);
1697
1698 failed:
1699         g_free(task->range);
1700         g_free(task->ifname);
1701         g_free(task);
1702
1703         return err;
1704 }
1705
1706 int supplicant_stop(struct connman_device *device)
1707 {
1708         int index = connman_device_get_index(device);
1709         struct supplicant_task *task;
1710
1711         DBG("device %p", device);
1712
1713         task = find_task_by_index(index);
1714         if (task == NULL)
1715                 return -ENODEV;
1716
1717         g_free(task->range);
1718
1719         task_list = g_slist_remove(task_list, task);
1720
1721         disable_network(task);
1722
1723         remove_network(task);
1724
1725         return remove_interface(task);
1726 }
1727
1728 int supplicant_scan(struct connman_device *device)
1729 {
1730         int index = connman_device_get_index(device);
1731         struct supplicant_task *task;
1732         int err;
1733
1734         DBG("device %p", device);
1735
1736         task = find_task_by_index(index);
1737         if (task == NULL)
1738                 return -ENODEV;
1739
1740         switch (task->state) {
1741         case WPA_SCANNING:
1742                 return -EALREADY;
1743         case WPA_ASSOCIATING:
1744         case WPA_ASSOCIATED:
1745         case WPA_4WAY_HANDSHAKE:
1746         case WPA_GROUP_HANDSHAKE:
1747                 return -EBUSY;
1748         default:
1749                 break;
1750         }
1751
1752         task->scanning = TRUE;
1753
1754         err = initiate_scan(task);
1755         if (err < 0) {
1756                 task->scanning = FALSE;
1757                 return err;
1758         }
1759
1760         connman_device_set_scanning(task->device, TRUE);
1761
1762         return 0;
1763 }
1764
1765 int supplicant_connect(struct connman_network *network)
1766 {
1767         struct supplicant_task *task;
1768         int index;
1769
1770         DBG("network %p", network);
1771
1772         index = connman_network_get_index(network);
1773
1774         task = find_task_by_index(index);
1775         if (task == NULL)
1776                 return -ENODEV;
1777
1778         if (task->disconnecting == TRUE)
1779                 task->pending_network = connman_network_ref(network);
1780         else {
1781                 task->network = connman_network_ref(network);
1782                 return task_connect(task);
1783         }
1784
1785         return -EINPROGRESS;
1786 }
1787
1788 int supplicant_disconnect(struct connman_network *network)
1789 {
1790         struct supplicant_task *task;
1791         int index;
1792
1793         DBG("network %p", network);
1794
1795         index = connman_network_get_index(network);
1796
1797         task = find_task_by_index(index);
1798         if (task == NULL)
1799                 return -ENODEV;
1800
1801         if (task->disconnecting == TRUE)
1802                 return -EALREADY;
1803
1804         disable_network(task);
1805
1806         remove_network(task);
1807
1808         task->disconnecting = TRUE;
1809
1810         return 0;
1811 }
1812
1813 static void supplicant_activate(DBusConnection *conn)
1814 {
1815         DBusMessage *message;
1816
1817         DBG("conn %p", conn);
1818
1819         message = dbus_message_new_method_call(SUPPLICANT_NAME, "/",
1820                                 DBUS_INTERFACE_INTROSPECTABLE, "Introspect");
1821         if (message == NULL)
1822                 return;
1823
1824         dbus_message_set_no_reply(message, TRUE);
1825
1826         dbus_connection_send(conn, message, NULL);
1827
1828         dbus_message_unref(message);
1829 }
1830
1831 static GSList *driver_list = NULL;
1832
1833 static void supplicant_probe(DBusConnection *conn, void *user_data)
1834 {
1835         GSList *list;
1836
1837         DBG("conn %p", conn);
1838
1839         for (list = driver_list; list; list = list->next) {
1840                 struct supplicant_driver *driver = list->data;
1841
1842                 DBG("driver %p name %s", driver, driver->name);
1843
1844                 if (driver->probe)
1845                         driver->probe();
1846         }
1847 }
1848
1849 static void supplicant_remove(DBusConnection *conn, void *user_data)
1850 {
1851         GSList *list;
1852
1853         DBG("conn %p", conn);
1854
1855         for (list = driver_list; list; list = list->next) {
1856                 struct supplicant_driver *driver = list->data;
1857
1858                 DBG("driver %p name %s", driver, driver->name);
1859
1860                 if (driver->remove)
1861                         driver->remove();
1862         }
1863 }
1864
1865 static const char *supplicant_rule = "type=signal,"
1866                                 "interface=" SUPPLICANT_INTF ".Interface";
1867 static guint watch;
1868
1869 static int supplicant_create(void)
1870 {
1871         if (g_slist_length(driver_list) > 0)
1872                 return 0;
1873
1874         connection = connman_dbus_get_connection();
1875         if (connection == NULL)
1876                 return -EIO;
1877
1878         DBG("connection %p", connection);
1879
1880         if (dbus_connection_add_filter(connection,
1881                                 supplicant_filter, NULL, NULL) == FALSE) {
1882                 connection = connman_dbus_get_connection();
1883                 return -EIO;
1884         }
1885
1886         dbus_bus_add_match(connection, supplicant_rule, NULL);
1887         dbus_connection_flush(connection);
1888
1889         watch = g_dbus_add_service_watch(connection, SUPPLICANT_NAME,
1890                         supplicant_probe, supplicant_remove, NULL, NULL);
1891
1892         return 0;
1893 }
1894
1895 static void supplicant_destroy(void)
1896 {
1897         if (g_slist_length(driver_list) > 0)
1898                 return;
1899
1900         DBG("connection %p", connection);
1901
1902         if (watch > 0)
1903                 g_dbus_remove_watch(connection, watch);
1904
1905         dbus_bus_remove_match(connection, supplicant_rule, NULL);
1906         dbus_connection_flush(connection);
1907
1908         dbus_connection_remove_filter(connection, supplicant_filter, NULL);
1909
1910         dbus_connection_unref(connection);
1911         connection = NULL;
1912 }
1913
1914 int supplicant_register(struct supplicant_driver *driver)
1915 {
1916         int err;
1917
1918         DBG("driver %p name %s", driver, driver->name);
1919
1920         err = supplicant_create();
1921         if (err < 0)
1922                 return err;
1923
1924         driver_list = g_slist_append(driver_list, driver);
1925
1926         if (g_dbus_check_service(connection, SUPPLICANT_NAME) == TRUE)
1927                 supplicant_probe(connection, NULL);
1928         else
1929                 supplicant_activate(connection);
1930
1931         return 0;
1932 }
1933
1934 void supplicant_unregister(struct supplicant_driver *driver)
1935 {
1936         DBG("driver %p name %s", driver, driver->name);
1937
1938         supplicant_remove(connection, NULL);
1939
1940         driver_list = g_slist_remove(driver_list, driver);
1941
1942         supplicant_destroy();
1943 }