wpa_supplicant/wpa_supplicant.c

   1 /*
   2  * WPA Supplicant
   3  * Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  *
  14  * This file implements functions for registering and unregistering
  15  * %wpa_supplicant interfaces. In addition, this file contains number of
  16  * functions for managing network connections.
  17  */
  18
  19 #include "includes.h"
  20
  21 #include "common.h"
  22 #include "eapol_supp/eapol_supp_sm.h"
  23 #include "eap_peer/eap.h"
  24 #include "wpa.h"
  25 #include "eloop.h"
  26 #include "drivers/driver.h"
  27 #include "config.h"
  28 #include "l2_packet/l2_packet.h"
  29 #include "wpa_supplicant_i.h"
  30 #include "ctrl_iface.h"
  31 #include "ctrl_iface_dbus.h"
  32 #include "pcsc_funcs.h"
  33 #include "version.h"
  34 #include "preauth.h"
  35 #include "pmksa_cache.h"
  36 #include "wpa_ctrl.h"
  37 #include "mlme.h"
  38 #include "ieee802_11_defs.h"
  39 #include "blacklist.h"
  40 #include "wpas_glue.h"
  41 #include "wps/wps.h"
  42 #include "wps_supplicant.h"
  43
  44 const char *wpa_supplicant_version =
  45 "wpa_supplicant v" VERSION_STR "\n"
  46 "Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi> and contributors";
  47
  48 const char *wpa_supplicant_license =
  49 "This program is free software. You can distribute it and/or modify it\n"
  50 "under the terms of the GNU General Public License version 2.\n"
  51 "\n"
  52 "Alternatively, this software may be distributed under the terms of the\n"
  53 "BSD license. See README and COPYING for more details.\n"
  54 #ifdef EAP_TLS_OPENSSL
  55 "\nThis product includes software developed by the OpenSSL Project\n"
  56 "for use in the OpenSSL Toolkit (http://www.openssl.org/)\n"
  57 #endif /* EAP_TLS_OPENSSL */
  58 ;
  59
  60 #ifndef CONFIG_NO_STDOUT_DEBUG
  61 /* Long text divided into parts in order to fit in C89 strings size limits. */
  62 const char *wpa_supplicant_full_license1 =
  63 "This program is free software; you can redistribute it and/or modify\n"
  64 "it under the terms of the GNU General Public License version 2 as\n"
  65 "published by the Free Software Foundation.\n"
  66 "\n"
  67 "This program is distributed in the hope that it will be useful,\n"
  68 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
  69 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
  70 "GNU General Public License for more details.\n"
  71 "\n";
  72 const char *wpa_supplicant_full_license2 =
  73 "You should have received a copy of the GNU General Public License\n"
  74 "along with this program; if not, write to the Free Software\n"
  75 "Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA\n"
  76 "\n"
  77 "Alternatively, this software may be distributed under the terms of the\n"
  78 "BSD license.\n"
  79 "\n"
  80 "Redistribution and use in source and binary forms, with or without\n"
  81 "modification, are permitted provided that the following conditions are\n"
  82 "met:\n"
  83 "\n";
  84 const char *wpa_supplicant_full_license3 =
  85 "1. Redistributions of source code must retain the above copyright\n"
  86 "   notice, this list of conditions and the following disclaimer.\n"
  87 "\n"
  88 "2. Redistributions in binary form must reproduce the above copyright\n"
  89 "   notice, this list of conditions and the following disclaimer in the\n"
  90 "   documentation and/or other materials provided with the distribution.\n"
  91 "\n";
  92 const char *wpa_supplicant_full_license4 =
  93 "3. Neither the name(s) of the above-listed copyright holder(s) nor the\n"
  94 "   names of its contributors may be used to endorse or promote products\n"
  95 "   derived from this software without specific prior written permission.\n"
  96 "\n"
  97 "THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n"
  98 "\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n"
  99 "LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n"
 100 "A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n";
 101 const char *wpa_supplicant_full_license5 =
 102 "OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n"
 103 "SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n"
 104 "LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
 105 "DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
 106 "THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
 107 "(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"
 108 "OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
 109 "\n";
 110 #endif /* CONFIG_NO_STDOUT_DEBUG */
 111
 112 extern struct wpa_driver_ops *wpa_supplicant_drivers[];
 113
 114 extern int wpa_debug_level;
 115 extern int wpa_debug_show_keys;
 116 extern int wpa_debug_timestamp;
 117
 118 /* Configure default/group WEP keys for static WEP */
 119 static int wpa_set_wep_keys(struct wpa_supplicant *wpa_s,
 120                             struct wpa_ssid *ssid)
 121 {
 122         int i, set = 0;
 123
 124         for (i = 0; i < NUM_WEP_KEYS; i++) {
 125                 if (ssid->wep_key_len[i] == 0)
 126                         continue;
 127
 128                 set = 1;
 129                 wpa_drv_set_key(wpa_s, WPA_ALG_WEP,
 130                                 (u8 *) "\xff\xff\xff\xff\xff\xff",
 131                                 i, i == ssid->wep_tx_keyidx, (u8 *) "", 0,
 132                                 ssid->wep_key[i], ssid->wep_key_len[i]);
 133         }
 134
 135         return set;
 136 }
 137
 138
 139 static int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s,
 140                                            struct wpa_ssid *ssid)
 141 {
 142         u8 key[32];
 143         size_t keylen;
 144         wpa_alg alg;
 145         u8 seq[6] = { 0 };
 146
 147         /* IBSS/WPA-None uses only one key (Group) for both receiving and
 148          * sending unicast and multicast packets. */
 149
 150         if (ssid->mode != IEEE80211_MODE_IBSS) {
 151                 wpa_printf(MSG_INFO, "WPA: Invalid mode %d (not IBSS/ad-hoc) "
 152                            "for WPA-None", ssid->mode);
 153                 return -1;
 154         }
 155
 156         if (!ssid->psk_set) {
 157                 wpa_printf(MSG_INFO, "WPA: No PSK configured for WPA-None");
 158                 return -1;
 159         }
 160
 161         switch (wpa_s->group_cipher) {
 162         case WPA_CIPHER_CCMP:
 163                 os_memcpy(key, ssid->psk, 16);
 164                 keylen = 16;
 165                 alg = WPA_ALG_CCMP;
 166                 break;
 167         case WPA_CIPHER_TKIP:
 168                 /* WPA-None uses the same Michael MIC key for both TX and RX */
 169                 os_memcpy(key, ssid->psk, 16 + 8);
 170                 os_memcpy(key + 16 + 8, ssid->psk + 16, 8);
 171                 keylen = 32;
 172                 alg = WPA_ALG_TKIP;
 173                 break;
 174         default:
 175                 wpa_printf(MSG_INFO, "WPA: Invalid group cipher %d for "
 176                            "WPA-None", wpa_s->group_cipher);
 177                 return -1;
 178         }
 179
 180         /* TODO: should actually remember the previously used seq#, both for TX
 181          * and RX from each STA.. */
 182
 183         return wpa_drv_set_key(wpa_s, alg, (u8 *) "\xff\xff\xff\xff\xff\xff",
 184                                0, 1, seq, 6, key, keylen);
 185 }
 186
 187
 188 static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx)
 189 {
 190         struct wpa_supplicant *wpa_s = eloop_ctx;
 191         const u8 *bssid = wpa_s->bssid;
 192         if (is_zero_ether_addr(bssid))
 193                 bssid = wpa_s->pending_bssid;
 194         wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.",
 195                 MAC2STR(bssid));
 196         wpa_blacklist_add(wpa_s, bssid);
 197         wpa_sm_notify_disassoc(wpa_s->wpa);
 198         wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 199         wpa_s->reassociate = 1;
 200         wpa_supplicant_req_scan(wpa_s, 0, 0);
 201 }
 202
 203
 204 /**
 205  * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication
 206  * @wpa_s: Pointer to wpa_supplicant data
 207  * @sec: Number of seconds after which to time out authentication
 208  * @usec: Number of microseconds after which to time out authentication
 209  *
 210  * This function is used to schedule a timeout for the current authentication
 211  * attempt.
 212  */
 213 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
 214                                      int sec, int usec)
 215 {
 216         if (wpa_s->conf && wpa_s->conf->ap_scan == 0 &&
 217             wpa_s->driver && IS_WIRED(wpa_s->driver))
 218                 return;
 219
 220         wpa_msg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec "
 221                 "%d usec", sec, usec);
 222         eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
 223         eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL);
 224 }
 225
 226
 227 /**
 228  * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout
 229  * @wpa_s: Pointer to wpa_supplicant data
 230  *
 231  * This function is used to cancel authentication timeout scheduled with
 232  * wpa_supplicant_req_auth_timeout() and it is called when authentication has
 233  * been completed.
 234  */
 235 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s)
 236 {
 237         wpa_msg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout");
 238         eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
 239         wpa_blacklist_del(wpa_s, wpa_s->bssid);
 240 }
 241
 242
 243 /**
 244  * wpa_supplicant_initiate_eapol - Configure EAPOL state machine
 245  * @wpa_s: Pointer to wpa_supplicant data
 246  *
 247  * This function is used to configure EAPOL state machine based on the selected
 248  * authentication mode.
 249  */
 250 void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s)
 251 {
 252 #ifdef IEEE8021X_EAPOL
 253         struct eapol_config eapol_conf;
 254         struct wpa_ssid *ssid = wpa_s->current_ssid;
 255
 256         eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 257         eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
 258
 259         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 260             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 261                 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
 262         else
 263                 eapol_sm_notify_portControl(wpa_s->eapol, Auto);
 264
 265         os_memset(&eapol_conf, 0, sizeof(eapol_conf));
 266         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 267                 eapol_conf.accept_802_1x_keys = 1;
 268                 eapol_conf.required_keys = 0;
 269                 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) {
 270                         eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST;
 271                 }
 272                 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) {
 273                         eapol_conf.required_keys |=
 274                                 EAPOL_REQUIRE_KEY_BROADCAST;
 275                 }
 276
 277                 if (wpa_s->conf && wpa_s->driver && IS_WIRED(wpa_s->driver)) {
 278                         eapol_conf.required_keys = 0;
 279                 }
 280         }
 281         if (wpa_s->conf)
 282                 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
 283         eapol_conf.workaround = ssid->eap_workaround;
 284         eapol_conf.eap_disabled =
 285                 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) &&
 286                 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 287                 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS;
 288         eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
 289 #endif /* IEEE8021X_EAPOL */
 290 }
 291
 292
 293 /**
 294  * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode
 295  * @wpa_s: Pointer to wpa_supplicant data
 296  * @ssid: Configuration data for the network
 297  *
 298  * This function is used to configure WPA state machine and related parameters
 299  * to a mode where WPA is not enabled. This is called as part of the
 300  * authentication configuration when the selected network does not use WPA.
 301  */
 302 void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
 303                                        struct wpa_ssid *ssid)
 304 {
 305         int i;
 306
 307         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 308                 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS;
 309         else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)
 310                 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
 311         else
 312                 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
 313         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
 314         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
 315         wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
 316         wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 317         wpa_s->group_cipher = WPA_CIPHER_NONE;
 318         wpa_s->mgmt_group_cipher = 0;
 319
 320         for (i = 0; i < NUM_WEP_KEYS; i++) {
 321                 if (ssid->wep_key_len[i] > 5) {
 322                         wpa_s->pairwise_cipher = WPA_CIPHER_WEP104;
 323                         wpa_s->group_cipher = WPA_CIPHER_WEP104;
 324                         break;
 325                 } else if (ssid->wep_key_len[i] > 0) {
 326                         wpa_s->pairwise_cipher = WPA_CIPHER_WEP40;
 327                         wpa_s->group_cipher = WPA_CIPHER_WEP40;
 328                         break;
 329                 }
 330         }
 331
 332         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0);
 333         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
 334         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
 335                          wpa_s->pairwise_cipher);
 336         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
 337 #ifdef CONFIG_IEEE80211W
 338         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
 339                          wpa_s->mgmt_group_cipher);
 340 #endif /* CONFIG_IEEE80211W */
 341
 342         pmksa_cache_clear_current(wpa_s->wpa);
 343 }
 344
 345
 346 static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s)
 347 {
 348         scard_deinit(wpa_s->scard);
 349         wpa_s->scard = NULL;
 350         wpa_sm_set_scard_ctx(wpa_s->wpa, NULL);
 351         eapol_sm_register_scard_ctx(wpa_s->eapol, NULL);
 352         l2_packet_deinit(wpa_s->l2);
 353         wpa_s->l2 = NULL;
 354         if (wpa_s->l2_br) {
 355                 l2_packet_deinit(wpa_s->l2_br);
 356                 wpa_s->l2_br = NULL;
 357         }
 358
 359         if (wpa_s->ctrl_iface) {
 360                 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
 361                 wpa_s->ctrl_iface = NULL;
 362         }
 363         if (wpa_s->conf != NULL) {
 364                 wpa_config_free(wpa_s->conf);
 365                 wpa_s->conf = NULL;
 366         }
 367
 368         os_free(wpa_s->confname);
 369         wpa_s->confname = NULL;
 370
 371         wpa_sm_set_eapol(wpa_s->wpa, NULL);
 372         eapol_sm_deinit(wpa_s->eapol);
 373         wpa_s->eapol = NULL;
 374
 375         rsn_preauth_deinit(wpa_s->wpa);
 376
 377         pmksa_candidate_free(wpa_s->wpa);
 378         wpa_sm_deinit(wpa_s->wpa);
 379         wpa_s->wpa = NULL;
 380         wpa_blacklist_clear(wpa_s);
 381
 382         wpa_scan_results_free(wpa_s->scan_res);
 383         wpa_s->scan_res = NULL;
 384
 385         wpa_supplicant_cancel_scan(wpa_s);
 386         wpa_supplicant_cancel_auth_timeout(wpa_s);
 387
 388         ieee80211_sta_deinit(wpa_s);
 389
 390         wpas_wps_deinit(wpa_s);
 391 }
 392
 393
 394 /**
 395  * wpa_clear_keys - Clear keys configured for the driver
 396  * @wpa_s: Pointer to wpa_supplicant data
 397  * @addr: Previously used BSSID or %NULL if not available
 398  *
 399  * This function clears the encryption keys that has been previously configured
 400  * for the driver.
 401  */
 402 void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr)
 403 {
 404         u8 *bcast = (u8 *) "\xff\xff\xff\xff\xff\xff";
 405
 406         if (wpa_s->keys_cleared) {
 407                 /* Some drivers (e.g., ndiswrapper & NDIS drivers) seem to have
 408                  * timing issues with keys being cleared just before new keys
 409                  * are set or just after association or something similar. This
 410                  * shows up in group key handshake failing often because of the
 411                  * client not receiving the first encrypted packets correctly.
 412                  * Skipping some of the extra key clearing steps seems to help
 413                  * in completing group key handshake more reliably. */
 414                 wpa_printf(MSG_DEBUG, "No keys have been configured - "
 415                            "skip key clearing");
 416                 return;
 417         }
 418
 419         /* MLME-DELETEKEYS.request */
 420         wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 0, 0, NULL, 0, NULL, 0);
 421         wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 1, 0, NULL, 0, NULL, 0);
 422         wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 2, 0, NULL, 0, NULL, 0);
 423         wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 3, 0, NULL, 0, NULL, 0);
 424         if (addr) {
 425                 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL,
 426                                 0);
 427                 /* MLME-SETPROTECTION.request(None) */
 428                 wpa_drv_mlme_setprotection(
 429                         wpa_s, addr,
 430                         MLME_SETPROTECTION_PROTECT_TYPE_NONE,
 431                         MLME_SETPROTECTION_KEY_TYPE_PAIRWISE);
 432         }
 433         wpa_s->keys_cleared = 1;
 434 }
 435
 436
 437 /**
 438  * wpa_supplicant_state_txt - Get the connection state name as a text string
 439  * @state: State (wpa_state; WPA_*)
 440  * Returns: The state name as a printable text string
 441  */
 442 const char * wpa_supplicant_state_txt(int state)
 443 {
 444         switch (state) {
 445         case WPA_DISCONNECTED:
 446                 return "DISCONNECTED";
 447         case WPA_INACTIVE:
 448                 return "INACTIVE";
 449         case WPA_SCANNING:
 450                 return "SCANNING";
 451         case WPA_ASSOCIATING:
 452                 return "ASSOCIATING";
 453         case WPA_ASSOCIATED:
 454                 return "ASSOCIATED";
 455         case WPA_4WAY_HANDSHAKE:
 456                 return "4WAY_HANDSHAKE";
 457         case WPA_GROUP_HANDSHAKE:
 458                 return "GROUP_HANDSHAKE";
 459         case WPA_COMPLETED:
 460                 return "COMPLETED";
 461         default:
 462                 return "UNKNOWN";
 463         }
 464 }
 465
 466
 467 /**
 468  * wpa_supplicant_set_state - Set current connection state
 469  * @wpa_s: Pointer to wpa_supplicant data
 470  * @state: The new connection state
 471  *
 472  * This function is called whenever the connection state changes, e.g.,
 473  * association is completed for WPA/WPA2 4-Way Handshake is started.
 474  */
 475 void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s, wpa_states state)
 476 {
 477         wpa_printf(MSG_DEBUG, "State: %s -> %s",
 478                    wpa_supplicant_state_txt(wpa_s->wpa_state),
 479                    wpa_supplicant_state_txt(state));
 480
 481         wpa_supplicant_dbus_notify_state_change(wpa_s, state,
 482                                                 wpa_s->wpa_state);
 483
 484         if (state == WPA_COMPLETED && wpa_s->new_connection) {
 485 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
 486                 struct wpa_ssid *ssid = wpa_s->current_ssid;
 487                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to "
 488                         MACSTR " completed %s [id=%d id_str=%s]",
 489                         MAC2STR(wpa_s->bssid), wpa_s->reassociated_connection ?
 490                         "(reauth)" : "(auth)",
 491                         ssid ? ssid->id : -1,
 492                         ssid && ssid->id_str ? ssid->id_str : "");
 493 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
 494                 wpa_s->new_connection = 0;
 495                 wpa_s->reassociated_connection = 1;
 496                 wpa_drv_set_operstate(wpa_s, 1);
 497         } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING ||
 498                    state == WPA_ASSOCIATED) {
 499                 wpa_s->new_connection = 1;
 500                 wpa_drv_set_operstate(wpa_s, 0);
 501         }
 502         wpa_s->wpa_state = state;
 503 }
 504
 505
 506 static void wpa_supplicant_terminate(int sig, void *eloop_ctx,
 507                                      void *signal_ctx)
 508 {
 509         struct wpa_global *global = eloop_ctx;
 510         struct wpa_supplicant *wpa_s;
 511         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 512                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING "- signal %d "
 513                         "received", sig);
 514         }
 515         eloop_terminate();
 516 }
 517
 518
 519 static void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s)
 520 {
 521         wpa_s->pairwise_cipher = 0;
 522         wpa_s->group_cipher = 0;
 523         wpa_s->mgmt_group_cipher = 0;
 524         wpa_s->key_mgmt = 0;
 525         wpa_s->wpa_state = WPA_DISCONNECTED;
 526 }
 527
 528
 529 /**
 530  * wpa_supplicant_reload_configuration - Reload configuration data
 531  * @wpa_s: Pointer to wpa_supplicant data
 532  * Returns: 0 on success or -1 if configuration parsing failed
 533  *
 534  * This function can be used to request that the configuration data is reloaded
 535  * (e.g., after configuration file change). This function is reloading
 536  * configuration only for one interface, so this may need to be called multiple
 537  * times if %wpa_supplicant is controlling multiple interfaces and all
 538  * interfaces need reconfiguration.
 539  */
 540 int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s)
 541 {
 542         struct wpa_config *conf;
 543         int reconf_ctrl;
 544         if (wpa_s->confname == NULL)
 545                 return -1;
 546         conf = wpa_config_read(wpa_s->confname);
 547         if (conf == NULL) {
 548                 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration "
 549                         "file '%s' - exiting", wpa_s->confname);
 550                 return -1;
 551         }
 552
 553         reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface
 554                 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface &&
 555                     os_strcmp(conf->ctrl_interface,
 556                               wpa_s->conf->ctrl_interface) != 0);
 557
 558         if (reconf_ctrl && wpa_s->ctrl_iface) {
 559                 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
 560                 wpa_s->ctrl_iface = NULL;
 561         }
 562
 563         eapol_sm_invalidate_cached_session(wpa_s->eapol);
 564         wpa_s->current_ssid = NULL;
 565         /*
 566          * TODO: should notify EAPOL SM about changes in opensc_engine_path,
 567          * pkcs11_engine_path, pkcs11_module_path.
 568          */
 569         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
 570                 /*
 571                  * Clear forced success to clear EAP state for next
 572                  * authentication.
 573                  */
 574                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 575         }
 576         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 577         wpa_sm_set_config(wpa_s->wpa, NULL);
 578         wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
 579         rsn_preauth_deinit(wpa_s->wpa);
 580         wpa_config_free(wpa_s->conf);
 581         wpa_s->conf = conf;
 582         if (reconf_ctrl)
 583                 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
 584
 585         wpa_supplicant_clear_status(wpa_s);
 586         wpa_s->reassociate = 1;
 587         wpa_supplicant_req_scan(wpa_s, 0, 0);
 588         wpa_msg(wpa_s, MSG_DEBUG, "Reconfiguration completed");
 589         return 0;
 590 }
 591
 592
 593 static void wpa_supplicant_reconfig(int sig, void *eloop_ctx,
 594                                     void *signal_ctx)
 595 {
 596         struct wpa_global *global = eloop_ctx;
 597         struct wpa_supplicant *wpa_s;
 598         wpa_printf(MSG_DEBUG, "Signal %d received - reconfiguring", sig);
 599         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 600                 if (wpa_supplicant_reload_configuration(wpa_s) < 0) {
 601                         eloop_terminate();
 602                 }
 603         }
 604 }
 605
 606
 607 static wpa_cipher cipher_suite2driver(int cipher)
 608 {
 609         switch (cipher) {
 610         case WPA_CIPHER_NONE:
 611                 return CIPHER_NONE;
 612         case WPA_CIPHER_WEP40:
 613                 return CIPHER_WEP40;
 614         case WPA_CIPHER_WEP104:
 615                 return CIPHER_WEP104;
 616         case WPA_CIPHER_CCMP:
 617                 return CIPHER_CCMP;
 618         case WPA_CIPHER_TKIP:
 619         default:
 620                 return CIPHER_TKIP;
 621         }
 622 }
 623
 624
 625 static wpa_key_mgmt key_mgmt2driver(int key_mgmt)
 626 {
 627         switch (key_mgmt) {
 628         case WPA_KEY_MGMT_NONE:
 629                 return KEY_MGMT_NONE;
 630         case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
 631                 return KEY_MGMT_802_1X_NO_WPA;
 632         case WPA_KEY_MGMT_IEEE8021X:
 633                 return KEY_MGMT_802_1X;
 634         case WPA_KEY_MGMT_WPA_NONE:
 635                 return KEY_MGMT_WPA_NONE;
 636         case WPA_KEY_MGMT_FT_IEEE8021X:
 637                 return KEY_MGMT_FT_802_1X;
 638         case WPA_KEY_MGMT_FT_PSK:
 639                 return KEY_MGMT_FT_PSK;
 640         case WPA_KEY_MGMT_IEEE8021X_SHA256:
 641                 return KEY_MGMT_802_1X_SHA256;
 642         case WPA_KEY_MGMT_PSK_SHA256:
 643                 return KEY_MGMT_PSK_SHA256;
 644         case WPA_KEY_MGMT_WPS:
 645                 return KEY_MGMT_WPS;
 646         case WPA_KEY_MGMT_PSK:
 647         default:
 648                 return KEY_MGMT_PSK;
 649         }
 650 }
 651
 652
 653 static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s,
 654                                          struct wpa_ssid *ssid,
 655                                          struct wpa_ie_data *ie)
 656 {
 657         int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie);
 658         if (ret) {
 659                 if (ret == -2) {
 660                         wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE "
 661                                 "from association info");
 662                 }
 663                 return -1;
 664         }
 665
 666         wpa_printf(MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set cipher "
 667                    "suites");
 668         if (!(ie->group_cipher & ssid->group_cipher)) {
 669                 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group "
 670                         "cipher 0x%x (mask 0x%x) - reject",
 671                         ie->group_cipher, ssid->group_cipher);
 672                 return -1;
 673         }
 674         if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) {
 675                 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise "
 676                         "cipher 0x%x (mask 0x%x) - reject",
 677                         ie->pairwise_cipher, ssid->pairwise_cipher);
 678                 return -1;
 679         }
 680         if (!(ie->key_mgmt & ssid->key_mgmt)) {
 681                 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key "
 682                         "management 0x%x (mask 0x%x) - reject",
 683                         ie->key_mgmt, ssid->key_mgmt);
 684                 return -1;
 685         }
 686
 687 #ifdef CONFIG_IEEE80211W
 688         if (!(ie->capabilities & WPA_CAPABILITY_MFPC) &&
 689             ssid->ieee80211w == IEEE80211W_REQUIRED) {
 690                 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP "
 691                         "that does not support management frame protection - "
 692                         "reject");
 693                 return -1;
 694         }
 695 #endif /* CONFIG_IEEE80211W */
 696
 697         return 0;
 698 }
 699
 700
 701 /**
 702  * wpa_supplicant_set_suites - Set authentication and encryption parameters
 703  * @wpa_s: Pointer to wpa_supplicant data
 704  * @bss: Scan results for the selected BSS, or %NULL if not available
 705  * @ssid: Configuration data for the selected network
 706  * @wpa_ie: Buffer for the WPA/RSN IE
 707  * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the
 708  * used buffer length in case the functions returns success.
 709  * Returns: 0 on success or -1 on failure
 710  *
 711  * This function is used to configure authentication and encryption parameters
 712  * based on the network configuration and scan result for the selected BSS (if
 713  * available).
 714  */
 715 int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
 716                               struct wpa_scan_res *bss,
 717                               struct wpa_ssid *ssid,
 718                               u8 *wpa_ie, size_t *wpa_ie_len)
 719 {
 720         struct wpa_ie_data ie;
 721         int sel, proto;
 722         const u8 *bss_wpa, *bss_rsn;
 723
 724         if (bss) {
 725                 bss_wpa = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 726                 bss_rsn = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 727         } else
 728                 bss_wpa = bss_rsn = NULL;
 729
 730         if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) &&
 731             wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 &&
 732             (ie.group_cipher & ssid->group_cipher) &&
 733             (ie.pairwise_cipher & ssid->pairwise_cipher) &&
 734             (ie.key_mgmt & ssid->key_mgmt)) {
 735                 wpa_msg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0");
 736                 proto = WPA_PROTO_RSN;
 737         } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) &&
 738                    wpa_parse_wpa_ie(bss_wpa, 2 +bss_wpa[1], &ie) == 0 &&
 739                    (ie.group_cipher & ssid->group_cipher) &&
 740                    (ie.pairwise_cipher & ssid->pairwise_cipher) &&
 741                    (ie.key_mgmt & ssid->key_mgmt)) {
 742                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0");
 743                 proto = WPA_PROTO_WPA;
 744         } else if (bss) {
 745                 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN");
 746                 return -1;
 747         } else {
 748                 if (ssid->proto & WPA_PROTO_RSN)
 749                         proto = WPA_PROTO_RSN;
 750                 else
 751                         proto = WPA_PROTO_WPA;
 752                 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) {
 753                         os_memset(&ie, 0, sizeof(ie));
 754                         ie.group_cipher = ssid->group_cipher;
 755                         ie.pairwise_cipher = ssid->pairwise_cipher;
 756                         ie.key_mgmt = ssid->key_mgmt;
 757 #ifdef CONFIG_IEEE80211W
 758                         ie.mgmt_group_cipher =
 759                                 ssid->ieee80211w != NO_IEEE80211W ?
 760                                 WPA_CIPHER_AES_128_CMAC : 0;
 761 #endif /* CONFIG_IEEE80211W */
 762                         wpa_printf(MSG_DEBUG, "WPA: Set cipher suites based "
 763                                    "on configuration");
 764                 } else
 765                         proto = ie.proto;
 766         }
 767
 768         wpa_printf(MSG_DEBUG, "WPA: Selected cipher suites: group %d "
 769                    "pairwise %d key_mgmt %d proto %d",
 770                    ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto);
 771 #ifdef CONFIG_IEEE80211W
 772         if (ssid->ieee80211w) {
 773                 wpa_printf(MSG_DEBUG, "WPA: Selected mgmt group cipher %d",
 774                            ie.mgmt_group_cipher);
 775         }
 776 #endif /* CONFIG_IEEE80211W */
 777
 778         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto);
 779         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED,
 780                          !!(ssid->proto & WPA_PROTO_RSN));
 781
 782         if (bss || !wpa_s->ap_ies_from_associnfo) {
 783                 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
 784                                          bss_wpa ? 2 + bss_wpa[1] : 0) ||
 785                     wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
 786                                          bss_rsn ? 2 + bss_rsn[1] : 0))
 787                         return -1;
 788         }
 789
 790         sel = ie.group_cipher & ssid->group_cipher;
 791         if (sel & WPA_CIPHER_CCMP) {
 792                 wpa_s->group_cipher = WPA_CIPHER_CCMP;
 793                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK CCMP");
 794         } else if (sel & WPA_CIPHER_TKIP) {
 795                 wpa_s->group_cipher = WPA_CIPHER_TKIP;
 796                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK TKIP");
 797         } else if (sel & WPA_CIPHER_WEP104) {
 798                 wpa_s->group_cipher = WPA_CIPHER_WEP104;
 799                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP104");
 800         } else if (sel & WPA_CIPHER_WEP40) {
 801                 wpa_s->group_cipher = WPA_CIPHER_WEP40;
 802                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP40");
 803         } else {
 804                 wpa_printf(MSG_WARNING, "WPA: Failed to select group cipher.");
 805                 return -1;
 806         }
 807
 808         sel = ie.pairwise_cipher & ssid->pairwise_cipher;
 809         if (sel & WPA_CIPHER_CCMP) {
 810                 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
 811                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK CCMP");
 812         } else if (sel & WPA_CIPHER_TKIP) {
 813                 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
 814                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK TKIP");
 815         } else if (sel & WPA_CIPHER_NONE) {
 816                 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 817                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK NONE");
 818         } else {
 819                 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
 820                            "cipher.");
 821                 return -1;
 822         }
 823
 824         sel = ie.key_mgmt & ssid->key_mgmt;
 825         if (0) {
 826 #ifdef CONFIG_IEEE80211R
 827         } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) {
 828                 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X;
 829                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X");
 830         } else if (sel & WPA_KEY_MGMT_FT_PSK) {
 831                 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK;
 832                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK");
 833 #endif /* CONFIG_IEEE80211R */
 834 #ifdef CONFIG_IEEE80211W
 835         } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) {
 836                 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256;
 837                 wpa_msg(wpa_s, MSG_DEBUG,
 838                         "WPA: using KEY_MGMT 802.1X with SHA256");
 839         } else if (sel & WPA_KEY_MGMT_PSK_SHA256) {
 840                 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256;
 841                 wpa_msg(wpa_s, MSG_DEBUG,
 842                         "WPA: using KEY_MGMT PSK with SHA256");
 843 #endif /* CONFIG_IEEE80211W */
 844         } else if (sel & WPA_KEY_MGMT_IEEE8021X) {
 845                 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 846                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X");
 847         } else if (sel & WPA_KEY_MGMT_PSK) {
 848                 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
 849                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK");
 850         } else if (sel & WPA_KEY_MGMT_WPA_NONE) {
 851                 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE;
 852                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE");
 853         } else {
 854                 wpa_printf(MSG_WARNING, "WPA: Failed to select authenticated "
 855                            "key management type.");
 856                 return -1;
 857         }
 858
 859         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
 860         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
 861                          wpa_s->pairwise_cipher);
 862         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
 863
 864 #ifdef CONFIG_IEEE80211W
 865         sel = ie.mgmt_group_cipher;
 866         if (ssid->ieee80211w == NO_IEEE80211W ||
 867             !(ie.capabilities & WPA_CAPABILITY_MFPC))
 868                 sel = 0;
 869         if (sel & WPA_CIPHER_AES_128_CMAC) {
 870                 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
 871                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
 872                         "AES-128-CMAC");
 873         } else {
 874                 wpa_s->mgmt_group_cipher = 0;
 875                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher");
 876         }
 877         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
 878                          wpa_s->mgmt_group_cipher);
 879 #endif /* CONFIG_IEEE80211W */
 880
 881         if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) {
 882                 wpa_printf(MSG_WARNING, "WPA: Failed to generate WPA IE.");
 883                 return -1;
 884         }
 885
 886         if (ssid->key_mgmt &
 887             (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_PSK_SHA256))
 888                 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN);
 889         else
 890                 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
 891
 892         return 0;
 893 }
 894
 895
 896 /**
 897  * wpa_supplicant_associate - Request association
 898  * @wpa_s: Pointer to wpa_supplicant data
 899  * @bss: Scan results for the selected BSS, or %NULL if not available
 900  * @ssid: Configuration data for the selected network
 901  *
 902  * This function is used to request %wpa_supplicant to associate with a BSS.
 903  */
 904 void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
 905                               struct wpa_scan_res *bss, struct wpa_ssid *ssid)
 906 {
 907         u8 wpa_ie[80];
 908         size_t wpa_ie_len;
 909         int use_crypt, ret, i;
 910         int algs = AUTH_ALG_OPEN_SYSTEM;
 911         wpa_cipher cipher_pairwise, cipher_group;
 912         struct wpa_driver_associate_params params;
 913         int wep_keys_set = 0;
 914         struct wpa_driver_capa capa;
 915         int assoc_failed = 0;
 916
 917         wpa_s->reassociate = 0;
 918         if (bss) {
 919 #ifdef CONFIG_IEEE80211R
 920                 const u8 *md = NULL;
 921 #endif /* CONFIG_IEEE80211R */
 922                 const u8 *ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 923                 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
 924                         " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid),
 925                         ie ? wpa_ssid_txt(ie + 2, ie[1]) : "", bss->freq);
 926                 os_memset(wpa_s->bssid, 0, ETH_ALEN);
 927                 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
 928 #ifdef CONFIG_IEEE80211R
 929                 ie = wpa_scan_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
 930                 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
 931                         md = ie + 2;
 932                 wpa_sm_set_ft_params(wpa_s->wpa, md, NULL, 0, NULL);
 933                 if (md) {
 934                         /* Prepare for the next transition */
 935                         wpa_ft_prepare_auth_request(wpa_s->wpa);
 936                 }
 937 #endif /* CONFIG_IEEE80211R */
 938 #ifdef CONFIG_WPS
 939         } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) &&
 940                    wpa_s->conf->ap_scan == 2 &&
 941                    (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 942                 /* Use ap_scan==1 style network selection to find the network
 943                  */
 944                 wpa_s->scan_req = 2;
 945                 wpa_s->reassociate = 1;
 946                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 947                 return;
 948 #endif /* CONFIG_WPS */
 949         } else {
 950                 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'",
 951                         wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 952                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 953         }
 954         wpa_supplicant_cancel_scan(wpa_s);
 955
 956         /* Starting new association, so clear the possibly used WPA IE from the
 957          * previous association. */
 958         wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
 959
 960         if (wpa_drv_set_mode(wpa_s, ssid->mode)) {
 961                 wpa_printf(MSG_WARNING, "Failed to set operating mode");
 962                 assoc_failed = 1;
 963         }
 964
 965 #ifdef IEEE8021X_EAPOL
 966         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 967                 if (ssid->leap) {
 968                         if (ssid->non_leap == 0)
 969                                 algs = AUTH_ALG_LEAP;
 970                         else
 971                                 algs |= AUTH_ALG_LEAP;
 972                 }
 973         }
 974 #endif /* IEEE8021X_EAPOL */
 975         wpa_printf(MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs);
 976         if (ssid->auth_alg) {
 977                 algs = 0;
 978                 if (ssid->auth_alg & WPA_AUTH_ALG_OPEN)
 979                         algs |= AUTH_ALG_OPEN_SYSTEM;
 980                 if (ssid->auth_alg & WPA_AUTH_ALG_SHARED)
 981                         algs |= AUTH_ALG_SHARED_KEY;
 982                 if (ssid->auth_alg & WPA_AUTH_ALG_LEAP)
 983                         algs |= AUTH_ALG_LEAP;
 984                 wpa_printf(MSG_DEBUG, "Overriding auth_alg selection: 0x%x",
 985                            algs);
 986         }
 987         wpa_drv_set_auth_alg(wpa_s, algs);
 988
 989         if (bss && (wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
 990                     wpa_scan_get_ie(bss, WLAN_EID_RSN)) &&
 991             (ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
 992                                WPA_KEY_MGMT_FT_IEEE8021X |
 993                                WPA_KEY_MGMT_FT_PSK |
 994                                WPA_KEY_MGMT_IEEE8021X_SHA256 |
 995                                WPA_KEY_MGMT_PSK_SHA256))) {
 996                 int try_opportunistic;
 997                 try_opportunistic = ssid->proactive_key_caching &&
 998                         (ssid->proto & WPA_PROTO_RSN);
 999                 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
1000                                             wpa_s->current_ssid,
1001                                             try_opportunistic) == 0)
1002                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
1003                 wpa_ie_len = sizeof(wpa_ie);
1004                 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
1005                                               wpa_ie, &wpa_ie_len)) {
1006                         wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
1007                                    "management and encryption suites");
1008                         return;
1009                 }
1010         } else if (ssid->key_mgmt &
1011                    (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
1012                     WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK |
1013                     WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 |
1014                     WPA_KEY_MGMT_IEEE8021X_SHA256)) {
1015                 wpa_ie_len = sizeof(wpa_ie);
1016                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
1017                                               wpa_ie, &wpa_ie_len)) {
1018                         wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
1019                                    "management and encryption suites (no scan "
1020                                    "results)");
1021                         return;
1022                 }
1023 #ifdef CONFIG_WPS
1024         } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
1025                 struct wpabuf *wps_ie;
1026                 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
1027                 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) {
1028                         wpa_ie_len = wpabuf_len(wps_ie);
1029                         os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len);
1030                 }
1031                 wpabuf_free(wps_ie);
1032                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1033 #endif /* CONFIG_WPS */
1034         } else {
1035                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1036                 wpa_ie_len = 0;
1037         }
1038
1039         wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL);
1040         use_crypt = 1;
1041         cipher_pairwise = cipher_suite2driver(wpa_s->pairwise_cipher);
1042         cipher_group = cipher_suite2driver(wpa_s->group_cipher);
1043         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1044             wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1045                 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE)
1046                         use_crypt = 0;
1047                 if (wpa_set_wep_keys(wpa_s, ssid)) {
1048                         use_crypt = 1;
1049                         wep_keys_set = 1;
1050                 }
1051         }
1052         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)
1053                 use_crypt = 0;
1054
1055 #ifdef IEEE8021X_EAPOL
1056         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1057                 if ((ssid->eapol_flags &
1058                      (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
1059                       EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 &&
1060                     !wep_keys_set) {
1061                         use_crypt = 0;
1062                 } else {
1063                         /* Assume that dynamic WEP-104 keys will be used and
1064                          * set cipher suites in order for drivers to expect
1065                          * encryption. */
1066                         cipher_pairwise = cipher_group = CIPHER_WEP104;
1067                 }
1068         }
1069 #endif /* IEEE8021X_EAPOL */
1070
1071         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1072                 /* Set the key before (and later after) association */
1073                 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1074         }
1075
1076         wpa_drv_set_drop_unencrypted(wpa_s, use_crypt);
1077         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1078         os_memset(&params, 0, sizeof(params));
1079         if (bss) {
1080                 const u8 *ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
1081                 params.bssid = bss->bssid;
1082                 params.ssid = ie ? ie + 2 : (u8 *) "";
1083                 params.ssid_len = ie ? ie[1] : 0;
1084                 params.freq = bss->freq;
1085         } else {
1086                 params.ssid = ssid->ssid;
1087                 params.ssid_len = ssid->ssid_len;
1088         }
1089         if (ssid->mode == 1 && ssid->frequency > 0 && params.freq == 0)
1090                 params.freq = ssid->frequency; /* Initial channel for IBSS */
1091         params.wpa_ie = wpa_ie;
1092         params.wpa_ie_len = wpa_ie_len;
1093         params.pairwise_suite = cipher_pairwise;
1094         params.group_suite = cipher_group;
1095         params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
1096         params.auth_alg = algs;
1097         params.mode = ssid->mode;
1098         for (i = 0; i < NUM_WEP_KEYS; i++) {
1099                 if (ssid->wep_key_len[i])
1100                         params.wep_key[i] = ssid->wep_key[i];
1101                 params.wep_key_len[i] = ssid->wep_key_len[i];
1102         }
1103         params.wep_tx_keyidx = ssid->wep_tx_keyidx;
1104
1105         if (wpa_s->driver_4way_handshake &&
1106             (params.key_mgmt_suite == KEY_MGMT_PSK ||
1107              params.key_mgmt_suite == KEY_MGMT_FT_PSK)) {
1108                 params.passphrase = ssid->passphrase;
1109                 if (ssid->psk_set)
1110                         params.psk = ssid->psk;
1111         }
1112
1113 #ifdef CONFIG_IEEE80211W
1114         switch (ssid->ieee80211w) {
1115         case NO_IEEE80211W:
1116                 params.mgmt_frame_protection = NO_MGMT_FRAME_PROTECTION;
1117                 break;
1118         case IEEE80211W_OPTIONAL:
1119                 params.mgmt_frame_protection = MGMT_FRAME_PROTECTION_OPTIONAL;
1120                 break;
1121         case IEEE80211W_REQUIRED:
1122                 params.mgmt_frame_protection = MGMT_FRAME_PROTECTION_REQUIRED;
1123                 break;
1124         }
1125 #endif /* CONFIG_IEEE80211W */
1126
1127         if (wpa_s->use_client_mlme)
1128                 ret = ieee80211_sta_associate(wpa_s, &params);
1129         else
1130                 ret = wpa_drv_associate(wpa_s, &params);
1131         if (ret < 0) {
1132                 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
1133                         "failed");
1134                 /* try to continue anyway; new association will be tried again
1135                  * after timeout */
1136                 assoc_failed = 1;
1137         }
1138
1139         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1140                 /* Set the key after the association just in case association
1141                  * cleared the previously configured key. */
1142                 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1143                 /* No need to timeout authentication since there is no key
1144                  * management. */
1145                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1146                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1147         } else {
1148                 /* Timeout for IEEE 802.11 authentication and association */
1149                 int timeout = 60;
1150
1151                 if (assoc_failed) {
1152                         /* give IBSS a bit more time */
1153                         timeout = ssid->mode ? 10 : 5;
1154                 } else if (wpa_s->conf->ap_scan == 1) {
1155                         /* give IBSS a bit more time */
1156                         timeout = ssid->mode ? 20 : 10;
1157                 }
1158                 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0);
1159         }
1160
1161         if (wep_keys_set && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1162             capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC) {
1163                 /* Set static WEP keys again */
1164                 wpa_set_wep_keys(wpa_s, ssid);
1165         }
1166
1167         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) {
1168                 /*
1169                  * Do not allow EAP session resumption between different
1170                  * network configurations.
1171                  */
1172                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
1173         }
1174         wpa_s->current_ssid = ssid;
1175         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
1176         wpa_supplicant_initiate_eapol(wpa_s);
1177 }
1178
1179
1180 /**
1181  * wpa_supplicant_disassociate - Disassociate the current connection
1182  * @wpa_s: Pointer to wpa_supplicant data
1183  * @reason_code: IEEE 802.11 reason code for the disassociate frame
1184  *
1185  * This function is used to request %wpa_supplicant to disassociate with the
1186  * current AP.
1187  */
1188 void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
1189                                  int reason_code)
1190 {
1191         u8 *addr = NULL;
1192         if (!is_zero_ether_addr(wpa_s->bssid)) {
1193                 if (wpa_s->use_client_mlme)
1194                         ieee80211_sta_disassociate(wpa_s, reason_code);
1195                 else
1196                         wpa_drv_disassociate(wpa_s, wpa_s->bssid, reason_code);
1197                 addr = wpa_s->bssid;
1198         }
1199         wpa_clear_keys(wpa_s, addr);
1200         wpa_supplicant_mark_disassoc(wpa_s);
1201         wpa_s->current_ssid = NULL;
1202         wpa_sm_set_config(wpa_s->wpa, NULL);
1203         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1204 }
1205
1206
1207 /**
1208  * wpa_supplicant_deauthenticate - Deauthenticate the current connection
1209  * @wpa_s: Pointer to wpa_supplicant data
1210  * @reason_code: IEEE 802.11 reason code for the deauthenticate frame
1211  *
1212  * This function is used to request %wpa_supplicant to disassociate with the
1213  * current AP.
1214  */
1215 void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
1216                                    int reason_code)
1217 {
1218         u8 *addr = NULL;
1219         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1220         if (!is_zero_ether_addr(wpa_s->bssid)) {
1221                 if (wpa_s->use_client_mlme)
1222                         ieee80211_sta_deauthenticate(wpa_s, reason_code);
1223                 else
1224                         wpa_drv_deauthenticate(wpa_s, wpa_s->bssid,
1225                                                reason_code);
1226                 addr = wpa_s->bssid;
1227         }
1228         wpa_clear_keys(wpa_s, addr);
1229         wpa_s->current_ssid = NULL;
1230         wpa_sm_set_config(wpa_s->wpa, NULL);
1231         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1232         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1233         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1234 }
1235
1236
1237 static int wpa_supplicant_get_scan_results_old(struct wpa_supplicant *wpa_s)
1238 {
1239 #define SCAN_AP_LIMIT 128
1240         struct wpa_scan_result *results;
1241         int num, i;
1242         struct wpa_scan_results *res;
1243
1244         results = os_malloc(SCAN_AP_LIMIT * sizeof(struct wpa_scan_result));
1245         if (results == NULL) {
1246                 wpa_printf(MSG_WARNING, "Failed to allocate memory for scan "
1247                            "results");
1248                 return -1;
1249         }
1250
1251         num = wpa_drv_get_scan_results(wpa_s, results, SCAN_AP_LIMIT);
1252         wpa_printf(MSG_DEBUG, "Scan results: %d", num);
1253         if (num < 0) {
1254                 wpa_printf(MSG_DEBUG, "Failed to get scan results");
1255                 os_free(results);
1256                 return -1;
1257         }
1258         if (num > SCAN_AP_LIMIT) {
1259                 wpa_printf(MSG_INFO, "Not enough room for all APs (%d < %d)",
1260                            num, SCAN_AP_LIMIT);
1261                 num = SCAN_AP_LIMIT;
1262         }
1263
1264         wpa_scan_results_free(wpa_s->scan_res);
1265         wpa_s->scan_res = NULL;
1266
1267         /* Convert old scan result data structure to the new one */
1268         res = os_zalloc(sizeof(*res));
1269         if (res == NULL) {
1270                 os_free(results);
1271                 return -1;
1272         }
1273         res->res = os_zalloc(num * sizeof(struct wpa_scan_res *));
1274         if (res->res == NULL) {
1275                 os_free(results);
1276                 os_free(res);
1277                 return -1;
1278         }
1279
1280         for (i = 0; i < num; i++) {
1281                 struct wpa_scan_result *bss = &results[i];
1282                 struct wpa_scan_res *r;
1283                 size_t ie_len;
1284                 u8 *pos;
1285
1286                 ie_len = 2 + bss->ssid_len + bss->rsn_ie_len + bss->wpa_ie_len;
1287                 if (bss->maxrate)
1288                         ie_len += 3;
1289                 if (bss->mdie_present)
1290                         ie_len += 5;
1291
1292                 r = os_zalloc(sizeof(*r) + ie_len);
1293                 if (r == NULL)
1294                         break;
1295
1296                 os_memcpy(r->bssid, bss->bssid, ETH_ALEN);
1297                 r->freq = bss->freq;
1298                 r->caps = bss->caps;
1299                 r->qual = bss->qual;
1300                 r->noise = bss->noise;
1301                 r->level = bss->level;
1302                 r->tsf = bss->tsf;
1303                 r->ie_len = ie_len;
1304
1305                 pos = (u8 *) (r + 1);
1306
1307                 /* SSID IE */
1308                 *pos++ = WLAN_EID_SSID;
1309                 *pos++ = bss->ssid_len;
1310                 os_memcpy(pos, bss->ssid, bss->ssid_len);
1311                 pos += bss->ssid_len;
1312
1313                 if (bss->maxrate) {
1314                         /* Fake Supported Rate IE to include max rate */
1315                         *pos++ = WLAN_EID_SUPP_RATES;
1316                         *pos++ = 1;
1317                         *pos++ = bss->maxrate;
1318                 }
1319
1320                 if (bss->rsn_ie_len) {
1321                         os_memcpy(pos, bss->rsn_ie, bss->rsn_ie_len);
1322                         pos += bss->rsn_ie_len;
1323                 }
1324
1325                 if (bss->mdie_present) {
1326                         os_memcpy(pos, bss->mdie, 5);
1327                         pos += 5;
1328                 }
1329
1330                 if (bss->wpa_ie_len) {
1331                         os_memcpy(pos, bss->wpa_ie, bss->wpa_ie_len);
1332                         pos += bss->wpa_ie_len;
1333                 }
1334
1335                 res->res[res->num++] = r;
1336         }
1337
1338         os_free(results);
1339         wpa_s->scan_res = res;
1340
1341         return 0;
1342 }
1343
1344
1345 /**
1346  * wpa_supplicant_get_scan_results - Get scan results
1347  * @wpa_s: Pointer to wpa_supplicant data
1348  * Returns: 0 on success, -1 on failure
1349  *
1350  * This function is request the current scan results from the driver and stores
1351  * a local copy of the results in wpa_s->scan_res.
1352  */
1353 int wpa_supplicant_get_scan_results(struct wpa_supplicant *wpa_s)
1354 {
1355         int ret;
1356
1357         if (wpa_s->use_client_mlme) {
1358                 wpa_scan_results_free(wpa_s->scan_res);
1359                 wpa_s->scan_res = ieee80211_sta_get_scan_results(wpa_s);
1360                 if (wpa_s->scan_res == NULL) {
1361                         wpa_printf(MSG_DEBUG, "Failed to get scan results");
1362                         ret = -1;
1363                 } else
1364                         ret = 0;
1365         } else if (wpa_s->driver->get_scan_results2 == NULL)
1366                 ret = wpa_supplicant_get_scan_results_old(wpa_s);
1367         else {
1368                 wpa_scan_results_free(wpa_s->scan_res);
1369                 wpa_s->scan_res = wpa_drv_get_scan_results2(wpa_s);
1370                 if (wpa_s->scan_res == NULL) {
1371                         wpa_printf(MSG_DEBUG, "Failed to get scan results");
1372                         ret = -1;
1373                 } else
1374                         ret = 0;
1375         }
1376
1377         if (wpa_s->scan_res)
1378                 wpa_scan_sort_results(wpa_s->scan_res);
1379
1380         return ret;
1381 }
1382
1383
1384 /**
1385  * wpa_supplicant_get_ssid - Get a pointer to the current network structure
1386  * @wpa_s: Pointer to wpa_supplicant data
1387  * Returns: A pointer to the current network structure or %NULL on failure
1388  */
1389 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
1390 {
1391         struct wpa_ssid *entry;
1392         u8 ssid[MAX_SSID_LEN];
1393         int res;
1394         size_t ssid_len;
1395         u8 bssid[ETH_ALEN];
1396         int wired;
1397
1398         if (wpa_s->use_client_mlme) {
1399                 if (ieee80211_sta_get_ssid(wpa_s, ssid, &ssid_len)) {
1400                         wpa_printf(MSG_WARNING, "Could not read SSID from "
1401                                    "MLME.");
1402                         return NULL;
1403                 }
1404         } else {
1405                 res = wpa_drv_get_ssid(wpa_s, ssid);
1406                 if (res < 0) {
1407                         wpa_printf(MSG_WARNING, "Could not read SSID from "
1408                                    "driver.");
1409                         return NULL;
1410                 }
1411                 ssid_len = res;
1412         }
1413
1414         if (wpa_s->use_client_mlme)
1415                 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1416         else if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1417                 wpa_printf(MSG_WARNING, "Could not read BSSID from driver.");
1418                 return NULL;
1419         }
1420
1421         wired = wpa_s->conf->ap_scan == 0 && wpa_s->driver &&
1422                 IS_WIRED(wpa_s->driver);
1423
1424         entry = wpa_s->conf->ssid;
1425         while (entry) {
1426                 if (!entry->disabled &&
1427                     ((ssid_len == entry->ssid_len &&
1428                       os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) &&
1429                     (!entry->bssid_set ||
1430                      os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1431                         return entry;
1432 #ifdef CONFIG_WPS
1433                 if (!entry->disabled &&
1434                     (entry->key_mgmt & WPA_KEY_MGMT_WPS) &&
1435                     (entry->ssid == NULL || entry->ssid_len == 0) &&
1436                     (!entry->bssid_set ||
1437                      os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1438                         return entry;
1439 #endif /* CONFIG_WPS */
1440                 entry = entry->next;
1441         }
1442
1443         return NULL;
1444 }
1445
1446
1447 static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
1448                                      const char *name)
1449 {
1450         int i;
1451
1452         if (wpa_s == NULL)
1453                 return -1;
1454
1455         if (wpa_supplicant_drivers[0] == NULL) {
1456                 wpa_printf(MSG_ERROR, "No driver interfaces build into "
1457                            "wpa_supplicant.");
1458                 return -1;
1459         }
1460
1461         if (name == NULL) {
1462                 /* default to first driver in the list */
1463                 wpa_s->driver = wpa_supplicant_drivers[0];
1464                 return 0;
1465         }
1466
1467         for (i = 0; wpa_supplicant_drivers[i]; i++) {
1468                 if (os_strcmp(name, wpa_supplicant_drivers[i]->name) == 0) {
1469                         wpa_s->driver = wpa_supplicant_drivers[i];
1470                         return 0;
1471                 }
1472         }
1473
1474         wpa_printf(MSG_ERROR, "Unsupported driver '%s'.\n", name);
1475         return -1;
1476 }
1477
1478
1479 void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
1480                              const u8 *buf, size_t len)
1481 {
1482         struct wpa_supplicant *wpa_s = ctx;
1483
1484         wpa_printf(MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr));
1485         wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len);
1486
1487         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
1488                 wpa_printf(MSG_DEBUG, "Ignored received EAPOL frame since "
1489                            "no key management is configured");
1490                 return;
1491         }
1492
1493         if (wpa_s->eapol_received == 0 &&
1494             (!wpa_s->driver_4way_handshake ||
1495              !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
1496              wpa_s->wpa_state != WPA_COMPLETED)) {
1497                 /* Timeout for completing IEEE 802.1X and WPA authentication */
1498                 wpa_supplicant_req_auth_timeout(
1499                         wpa_s,
1500                         (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
1501                          wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA ||
1502                          wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ?
1503                         70 : 10, 0);
1504         }
1505         wpa_s->eapol_received++;
1506
1507         if (wpa_s->countermeasures) {
1508                 wpa_printf(MSG_INFO, "WPA: Countermeasures - dropped EAPOL "
1509                            "packet");
1510                 return;
1511         }
1512
1513         /* Source address of the incoming EAPOL frame could be compared to the
1514          * current BSSID. However, it is possible that a centralized
1515          * Authenticator could be using another MAC address than the BSSID of
1516          * an AP, so just allow any address to be used for now. The replies are
1517          * still sent to the current BSSID (if available), though. */
1518
1519         os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN);
1520         if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) &&
1521             eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0)
1522                 return;
1523         wpa_drv_poll(wpa_s);
1524         if (!wpa_s->driver_4way_handshake)
1525                 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len);
1526         else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1527                 /*
1528                  * Set portValid = TRUE here since we are going to skip 4-way
1529                  * handshake processing which would normally set portValid. We
1530                  * need this to allow the EAPOL state machines to be completed
1531                  * without going through EAPOL-Key handshake.
1532                  */
1533                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1534         }
1535 }
1536
1537
1538 void wpa_supplicant_sta_free_hw_features(struct wpa_hw_modes *hw_features,
1539                                          size_t num_hw_features)
1540 {
1541         ieee80211_sta_free_hw_features(hw_features, num_hw_features);
1542 }
1543
1544
1545 void wpa_supplicant_sta_rx(void *ctx, const u8 *buf, size_t len,
1546                            struct ieee80211_rx_status *rx_status)
1547 {
1548         struct wpa_supplicant *wpa_s = ctx;
1549         ieee80211_sta_rx(wpa_s, buf, len, rx_status);
1550 }
1551
1552
1553 /**
1554  * wpa_supplicant_driver_init - Initialize driver interface parameters
1555  * @wpa_s: Pointer to wpa_supplicant data
1556  * Returns: 0 on success, -1 on failure
1557  *
1558  * This function is called to initialize driver interface parameters.
1559  * wpa_drv_init() must have been called before this function to initialize the
1560  * driver interface.
1561  */
1562 int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s)
1563 {
1564         static int interface_count = 0;
1565
1566         if (wpa_s->driver->send_eapol) {
1567                 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
1568                 if (addr)
1569                         os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
1570         } else {
1571                 wpa_s->l2 = l2_packet_init(wpa_s->ifname,
1572                                            wpa_drv_get_mac_addr(wpa_s),
1573                                            ETH_P_EAPOL,
1574                                            wpa_supplicant_rx_eapol, wpa_s, 0);
1575                 if (wpa_s->l2 == NULL)
1576                         return -1;
1577         }
1578
1579         if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) {
1580                 wpa_printf(MSG_ERROR, "Failed to get own L2 address");
1581                 return -1;
1582         }
1583
1584         wpa_printf(MSG_DEBUG, "Own MAC address: " MACSTR,
1585                    MAC2STR(wpa_s->own_addr));
1586
1587         if (wpa_s->bridge_ifname[0]) {
1588                 wpa_printf(MSG_DEBUG, "Receiving packets from bridge interface"
1589                            " '%s'", wpa_s->bridge_ifname);
1590                 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname,
1591                                               wpa_s->own_addr,
1592                                               ETH_P_EAPOL,
1593                                               wpa_supplicant_rx_eapol, wpa_s,
1594                                               0);
1595                 if (wpa_s->l2_br == NULL) {
1596                         wpa_printf(MSG_ERROR, "Failed to open l2_packet "
1597                                    "connection for the bridge interface '%s'",
1598                                    wpa_s->bridge_ifname);
1599                         return -1;
1600                 }
1601         }
1602
1603         /* Backwards compatibility call to set_wpa() handler. This is called
1604          * only just after init and just before deinit, so these handler can be
1605          * used to implement same functionality. */
1606         if (wpa_drv_set_wpa(wpa_s, 1) < 0) {
1607                 struct wpa_driver_capa capa;
1608                 if (wpa_drv_get_capa(wpa_s, &capa) < 0 ||
1609                     !(capa.flags & (WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1610                                     WPA_DRIVER_CAPA_KEY_MGMT_WPA2))) {
1611                         wpa_printf(MSG_DEBUG, "Driver does not support WPA.");
1612                         /* Continue to allow non-WPA modes to be used. */
1613                 } else {
1614                         wpa_printf(MSG_ERROR, "Failed to enable WPA in the "
1615                                 "driver.");
1616                         return -1;
1617                 }
1618         }
1619
1620         wpa_clear_keys(wpa_s, NULL);
1621
1622         /* Make sure that TKIP countermeasures are not left enabled (could
1623          * happen if wpa_supplicant is killed during countermeasures. */
1624         wpa_drv_set_countermeasures(wpa_s, 0);
1625
1626         wpa_drv_set_drop_unencrypted(wpa_s, 1);
1627
1628         wpa_printf(MSG_DEBUG, "RSN: flushing PMKID list in the driver");
1629         wpa_drv_flush_pmkid(wpa_s);
1630
1631         wpa_s->prev_scan_ssid = BROADCAST_SSID_SCAN;
1632         wpa_supplicant_req_scan(wpa_s, interface_count, 100000);
1633         interface_count++;
1634
1635         return 0;
1636 }
1637
1638
1639 static int wpa_supplicant_daemon(const char *pid_file)
1640 {
1641         wpa_printf(MSG_DEBUG, "Daemonize..");
1642         return os_daemonize(pid_file);
1643 }
1644
1645
1646 static struct wpa_supplicant * wpa_supplicant_alloc(void)
1647 {
1648         struct wpa_supplicant *wpa_s;
1649
1650         wpa_s = os_zalloc(sizeof(*wpa_s));
1651         if (wpa_s == NULL)
1652                 return NULL;
1653         wpa_s->scan_req = 1;
1654
1655         return wpa_s;
1656 }
1657
1658
1659 static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
1660                                      struct wpa_interface *iface)
1661 {
1662         wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
1663                    "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname,
1664                    iface->confname ? iface->confname : "N/A",
1665                    iface->driver ? iface->driver : "default",
1666                    iface->ctrl_interface ? iface->ctrl_interface : "N/A",
1667                    iface->bridge_ifname ? iface->bridge_ifname : "N/A");
1668
1669         if (wpa_supplicant_set_driver(wpa_s, iface->driver) < 0) {
1670                 return -1;
1671         }
1672
1673         if (iface->confname) {
1674 #ifdef CONFIG_BACKEND_FILE
1675                 wpa_s->confname = os_rel2abs_path(iface->confname);
1676                 if (wpa_s->confname == NULL) {
1677                         wpa_printf(MSG_ERROR, "Failed to get absolute path "
1678                                    "for configuration file '%s'.",
1679                                    iface->confname);
1680                         return -1;
1681                 }
1682                 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'",
1683                            iface->confname, wpa_s->confname);
1684 #else /* CONFIG_BACKEND_FILE */
1685                 wpa_s->confname = os_strdup(iface->confname);
1686 #endif /* CONFIG_BACKEND_FILE */
1687                 wpa_s->conf = wpa_config_read(wpa_s->confname);
1688                 if (wpa_s->conf == NULL) {
1689                         wpa_printf(MSG_ERROR, "Failed to read or parse "
1690                                    "configuration '%s'.", wpa_s->confname);
1691                         return -1;
1692                 }
1693
1694                 /*
1695                  * Override ctrl_interface and driver_param if set on command
1696                  * line.
1697                  */
1698                 if (iface->ctrl_interface) {
1699                         os_free(wpa_s->conf->ctrl_interface);
1700                         wpa_s->conf->ctrl_interface =
1701                                 os_strdup(iface->ctrl_interface);
1702                 }
1703
1704                 if (iface->driver_param) {
1705                         os_free(wpa_s->conf->driver_param);
1706                         wpa_s->conf->driver_param =
1707                                 os_strdup(iface->driver_param);
1708                 }
1709         } else
1710                 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface,
1711                                                      iface->driver_param);
1712
1713         if (wpa_s->conf == NULL) {
1714                 wpa_printf(MSG_ERROR, "\nNo configuration found.");
1715                 return -1;
1716         }
1717
1718         if (iface->ifname == NULL) {
1719                 wpa_printf(MSG_ERROR, "\nInterface name is required.");
1720                 return -1;
1721         }
1722         if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) {
1723                 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.",
1724                            iface->ifname);
1725                 return -1;
1726         }
1727         os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname));
1728
1729         if (iface->bridge_ifname) {
1730                 if (os_strlen(iface->bridge_ifname) >=
1731                     sizeof(wpa_s->bridge_ifname)) {
1732                         wpa_printf(MSG_ERROR, "\nToo long bridge interface "
1733                                    "name '%s'.", iface->bridge_ifname);
1734                         return -1;
1735                 }
1736                 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname,
1737                            sizeof(wpa_s->bridge_ifname));
1738         }
1739
1740         return 0;
1741 }
1742
1743
1744 static int wpa_supplicant_init_iface2(struct wpa_supplicant *wpa_s)
1745 {
1746         const char *ifname;
1747         struct wpa_driver_capa capa;
1748
1749         wpa_printf(MSG_DEBUG, "Initializing interface (2) '%s'",
1750                    wpa_s->ifname);
1751
1752         /* RSNA Supplicant Key Management - INITIALIZE */
1753         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1754         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1755
1756         /* Initialize driver interface and register driver event handler before
1757          * L2 receive handler so that association events are processed before
1758          * EAPOL-Key packets if both become available for the same select()
1759          * call. */
1760         wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
1761         if (wpa_s->drv_priv == NULL) {
1762                 wpa_printf(MSG_ERROR, "Failed to initialize driver interface");
1763                 return -1;
1764         }
1765         if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
1766                 wpa_printf(MSG_ERROR, "Driver interface rejected "
1767                            "driver_param '%s'", wpa_s->conf->driver_param);
1768                 return -1;
1769         }
1770
1771         ifname = wpa_drv_get_ifname(wpa_s);
1772         if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
1773                 wpa_printf(MSG_DEBUG, "Driver interface replaced interface "
1774                            "name with '%s'", ifname);
1775                 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
1776         }
1777
1778         if (wpa_supplicant_init_wpa(wpa_s) < 0)
1779                 return -1;
1780
1781         wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname,
1782                           wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname :
1783                           NULL);
1784         wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
1785
1786         if (wpa_s->conf->dot11RSNAConfigPMKLifetime &&
1787             wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
1788                              wpa_s->conf->dot11RSNAConfigPMKLifetime)) {
1789                 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
1790                            "dot11RSNAConfigPMKLifetime");
1791                 return -1;
1792         }
1793
1794         if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold &&
1795             wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
1796                              wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) {
1797                 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
1798                         "dot11RSNAConfigPMKReauthThreshold");
1799                 return -1;
1800         }
1801
1802         if (wpa_s->conf->dot11RSNAConfigSATimeout &&
1803             wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT,
1804                              wpa_s->conf->dot11RSNAConfigSATimeout)) {
1805                 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
1806                            "dot11RSNAConfigSATimeout");
1807                 return -1;
1808         }
1809
1810         if (wpa_supplicant_driver_init(wpa_s) < 0)
1811                 return -1;
1812
1813         if (wpa_s->conf->country[0] && wpa_s->conf->country[1] &&
1814             wpa_drv_set_country(wpa_s, wpa_s->conf->country)) {
1815                 wpa_printf(MSG_DEBUG, "Failed to set country");
1816                 return -1;
1817         }
1818
1819         wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
1820
1821         if (wpas_wps_init(wpa_s))
1822                 return -1;
1823
1824         if (wpa_supplicant_init_eapol(wpa_s) < 0)
1825                 return -1;
1826         wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
1827
1828         wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
1829         if (wpa_s->ctrl_iface == NULL) {
1830                 wpa_printf(MSG_ERROR,
1831                            "Failed to initialize control interface '%s'.\n"
1832                            "You may have another wpa_supplicant process "
1833                            "already running or the file was\n"
1834                            "left by an unclean termination of wpa_supplicant "
1835                            "in which case you will need\n"
1836                            "to manually remove this file before starting "
1837                            "wpa_supplicant again.\n",
1838                            wpa_s->conf->ctrl_interface);
1839                 return -1;
1840         }
1841
1842         if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
1843                 if (capa.flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
1844                         wpa_s->use_client_mlme = 1;
1845                         if (ieee80211_sta_init(wpa_s))
1846                                 return -1;
1847                 }
1848                 if (capa.flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE)
1849                         wpa_s->driver_4way_handshake = 1;
1850         }
1851
1852         return 0;
1853 }
1854
1855
1856 static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s)
1857 {
1858         if (wpa_s->drv_priv) {
1859                 wpa_supplicant_deauthenticate(wpa_s,
1860                                               WLAN_REASON_DEAUTH_LEAVING);
1861
1862                 /* Backwards compatibility call to set_wpa() handler. This is
1863                  * called only just after init and just before deinit, so these
1864                  * handler can be used to implement same functionality. */
1865                 if (wpa_drv_set_wpa(wpa_s, 0) < 0) {
1866                         wpa_printf(MSG_ERROR, "Failed to disable WPA in the "
1867                                    "driver.");
1868                 }
1869
1870                 wpa_drv_set_drop_unencrypted(wpa_s, 0);
1871                 wpa_drv_set_countermeasures(wpa_s, 0);
1872                 wpa_clear_keys(wpa_s, NULL);
1873         }
1874
1875         wpas_dbus_unregister_iface(wpa_s);
1876
1877         wpa_supplicant_cleanup(wpa_s);
1878
1879         if (wpa_s->drv_priv)
1880                 wpa_drv_deinit(wpa_s);
1881 }
1882
1883
1884 /**
1885  * wpa_supplicant_add_iface - Add a new network interface
1886  * @global: Pointer to global data from wpa_supplicant_init()
1887  * @iface: Interface configuration options
1888  * Returns: Pointer to the created interface or %NULL on failure
1889  *
1890  * This function is used to add new network interfaces for %wpa_supplicant.
1891  * This can be called before wpa_supplicant_run() to add interfaces before the
1892  * main event loop has been started. In addition, new interfaces can be added
1893  * dynamically while %wpa_supplicant is already running. This could happen,
1894  * e.g., when a hotplug network adapter is inserted.
1895  */
1896 struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
1897                                                  struct wpa_interface *iface)
1898 {
1899         struct wpa_supplicant *wpa_s;
1900
1901         if (global == NULL || iface == NULL)
1902                 return NULL;
1903
1904         wpa_s = wpa_supplicant_alloc();
1905         if (wpa_s == NULL)
1906                 return NULL;
1907
1908         if (wpa_supplicant_init_iface(wpa_s, iface) ||
1909             wpa_supplicant_init_iface2(wpa_s)) {
1910                 wpa_printf(MSG_DEBUG, "Failed to add interface %s",
1911                            iface->ifname);
1912                 wpa_supplicant_deinit_iface(wpa_s);
1913                 os_free(wpa_s);
1914                 return NULL;
1915         }
1916
1917         wpa_s->global = global;
1918
1919         /* Register the interface with the dbus control interface */
1920         if (wpas_dbus_register_iface(wpa_s)) {
1921                 wpa_supplicant_deinit_iface(wpa_s);
1922                 os_free(wpa_s);
1923                 return NULL;
1924         }
1925
1926         wpa_s->next = global->ifaces;
1927         global->ifaces = wpa_s;
1928
1929         wpa_printf(MSG_DEBUG, "Added interface %s", wpa_s->ifname);
1930
1931         return wpa_s;
1932 }
1933
1934
1935 /**
1936  * wpa_supplicant_remove_iface - Remove a network interface
1937  * @global: Pointer to global data from wpa_supplicant_init()
1938  * @wpa_s: Pointer to the network interface to be removed
1939  * Returns: 0 if interface was removed, -1 if interface was not found
1940  *
1941  * This function can be used to dynamically remove network interfaces from
1942  * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
1943  * addition, this function is used to remove all remaining interfaces when
1944  * %wpa_supplicant is terminated.
1945  */
1946 int wpa_supplicant_remove_iface(struct wpa_global *global,
1947                                 struct wpa_supplicant *wpa_s)
1948 {
1949         struct wpa_supplicant *prev;
1950
1951         /* Remove interface from the global list of interfaces */
1952         prev = global->ifaces;
1953         if (prev == wpa_s) {
1954                 global->ifaces = wpa_s->next;
1955         } else {
1956                 while (prev && prev->next != wpa_s)
1957                         prev = prev->next;
1958                 if (prev == NULL)
1959                         return -1;
1960                 prev->next = wpa_s->next;
1961         }
1962
1963         wpa_printf(MSG_DEBUG, "Removing interface %s", wpa_s->ifname);
1964
1965         wpa_supplicant_deinit_iface(wpa_s);
1966         os_free(wpa_s);
1967
1968         return 0;
1969 }
1970
1971
1972 /**
1973  * wpa_supplicant_get_iface - Get a new network interface
1974  * @global: Pointer to global data from wpa_supplicant_init()
1975  * @ifname: Interface name
1976  * Returns: Pointer to the interface or %NULL if not found
1977  */
1978 struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
1979                                                  const char *ifname)
1980 {
1981         struct wpa_supplicant *wpa_s;
1982
1983         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
1984                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
1985                         return wpa_s;
1986         }
1987         return NULL;
1988 }
1989
1990
1991 /**
1992  * wpa_supplicant_init - Initialize %wpa_supplicant
1993  * @params: Parameters for %wpa_supplicant
1994  * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
1995  *
1996  * This function is used to initialize %wpa_supplicant. After successful
1997  * initialization, the returned data pointer can be used to add and remove
1998  * network interfaces, and eventually, to deinitialize %wpa_supplicant.
1999  */
2000 struct wpa_global * wpa_supplicant_init(struct wpa_params *params)
2001 {
2002         struct wpa_global *global;
2003         int ret, i;
2004
2005         if (params == NULL)
2006                 return NULL;
2007
2008         wpa_debug_open_file(params->wpa_debug_file_path);
2009
2010         ret = eap_peer_register_methods();
2011         if (ret) {
2012                 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
2013                 if (ret == -2)
2014                         wpa_printf(MSG_ERROR, "Two or more EAP methods used "
2015                                    "the same EAP type.");
2016                 return NULL;
2017         }
2018
2019         global = os_zalloc(sizeof(*global));
2020         if (global == NULL)
2021                 return NULL;
2022         global->params.daemonize = params->daemonize;
2023         global->params.wait_for_monitor = params->wait_for_monitor;
2024         global->params.dbus_ctrl_interface = params->dbus_ctrl_interface;
2025         if (params->pid_file)
2026                 global->params.pid_file = os_strdup(params->pid_file);
2027         if (params->ctrl_interface)
2028                 global->params.ctrl_interface =
2029                         os_strdup(params->ctrl_interface);
2030         wpa_debug_level = global->params.wpa_debug_level =
2031                 params->wpa_debug_level;
2032         wpa_debug_show_keys = global->params.wpa_debug_show_keys =
2033                 params->wpa_debug_show_keys;
2034         wpa_debug_timestamp = global->params.wpa_debug_timestamp =
2035                 params->wpa_debug_timestamp;
2036
2037         if (eloop_init(global)) {
2038                 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
2039                 wpa_supplicant_deinit(global);
2040                 return NULL;
2041         }
2042
2043         global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global);
2044         if (global->ctrl_iface == NULL) {
2045                 wpa_supplicant_deinit(global);
2046                 return NULL;
2047         }
2048
2049         if (global->params.dbus_ctrl_interface) {
2050                 global->dbus_ctrl_iface =
2051                         wpa_supplicant_dbus_ctrl_iface_init(global);
2052                 if (global->dbus_ctrl_iface == NULL) {
2053                         wpa_supplicant_deinit(global);
2054                         return NULL;
2055                 }
2056         }
2057
2058         for (i = 0; wpa_supplicant_drivers[i]; i++)
2059                 global->drv_count++;
2060         if (global->drv_count == 0) {
2061                 wpa_printf(MSG_ERROR, "No drivers enabled");
2062                 wpa_supplicant_deinit(global);
2063                 return NULL;
2064         }
2065         global->drv_priv = os_zalloc(global->drv_count * sizeof(void *));
2066         if (global->drv_priv == NULL) {
2067                 wpa_supplicant_deinit(global);
2068                 return NULL;
2069         }
2070         for (i = 0; wpa_supplicant_drivers[i]; i++) {
2071                 if (!wpa_supplicant_drivers[i]->global_init)
2072                         continue;
2073                 global->drv_priv[i] = wpa_supplicant_drivers[i]->global_init();
2074                 if (global->drv_priv[i] == NULL) {
2075                         wpa_printf(MSG_ERROR, "Failed to initialize driver "
2076                                    "'%s'", wpa_supplicant_drivers[i]->name);
2077                         wpa_supplicant_deinit(global);
2078                         return NULL;
2079                 }
2080         }
2081
2082         return global;
2083 }
2084
2085
2086 /**
2087  * wpa_supplicant_run - Run the %wpa_supplicant main event loop
2088  * @global: Pointer to global data from wpa_supplicant_init()
2089  * Returns: 0 after successful event loop run, -1 on failure
2090  *
2091  * This function starts the main event loop and continues running as long as
2092  * there are any remaining events. In most cases, this function is running as
2093  * long as the %wpa_supplicant process in still in use.
2094  */
2095 int wpa_supplicant_run(struct wpa_global *global)
2096 {
2097         struct wpa_supplicant *wpa_s;
2098
2099         if (global->params.daemonize &&
2100             wpa_supplicant_daemon(global->params.pid_file))
2101                 return -1;
2102
2103         if (global->params.wait_for_monitor) {
2104                 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
2105                         if (wpa_s->ctrl_iface)
2106                                 wpa_supplicant_ctrl_iface_wait(
2107                                         wpa_s->ctrl_iface);
2108         }
2109
2110         eloop_register_signal_terminate(wpa_supplicant_terminate, NULL);
2111         eloop_register_signal_reconfig(wpa_supplicant_reconfig, NULL);
2112
2113         eloop_run();
2114
2115         return 0;
2116 }
2117
2118
2119 /**
2120  * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
2121  * @global: Pointer to global data from wpa_supplicant_init()
2122  *
2123  * This function is called to deinitialize %wpa_supplicant and to free all
2124  * allocated resources. Remaining network interfaces will also be removed.
2125  */
2126 void wpa_supplicant_deinit(struct wpa_global *global)
2127 {
2128         int i;
2129
2130         if (global == NULL)
2131                 return;
2132
2133         while (global->ifaces)
2134                 wpa_supplicant_remove_iface(global, global->ifaces);
2135
2136         if (global->ctrl_iface)
2137                 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface);
2138         if (global->dbus_ctrl_iface)
2139                 wpa_supplicant_dbus_ctrl_iface_deinit(global->dbus_ctrl_iface);
2140
2141         eap_peer_unregister_methods();
2142
2143         for (i = 0; wpa_supplicant_drivers[i]; i++) {
2144                 if (!global->drv_priv[i])
2145                         continue;
2146                 wpa_supplicant_drivers[i]->global_deinit(global->drv_priv[i]);
2147         }
2148         os_free(global->drv_priv);
2149
2150         eloop_destroy();
2151
2152         if (global->params.pid_file) {
2153                 os_daemonize_terminate(global->params.pid_file);
2154                 os_free(global->params.pid_file);
2155         }
2156         os_free(global->params.ctrl_interface);
2157
2158         os_free(global);
2159         wpa_debug_close_file();
2160 }