vcs.maemo.org Git - wpasupplicant/blob - wpa_supplicant/wpa_supplicant.c

   1 /*
   2  * WPA Supplicant
   3  * Copyright (c) 2003-2009, 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_supplicant.h"
  42 #include "ibss_rsn.h"
  43
  44 const char *wpa_supplicant_version =
  45 "wpa_supplicant v" VERSION_STR "\n"
  46 "Copyright (c) 2003-2009, 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 int wpa_debug_level;
 113 extern int wpa_debug_show_keys;
 114 extern int wpa_debug_timestamp;
 115
 116 /* Configure default/group WEP keys for static WEP */
 117 static int wpa_set_wep_keys(struct wpa_supplicant *wpa_s,
 118                             struct wpa_ssid *ssid)
 119 {
 120         int i, set = 0;
 121
 122         for (i = 0; i < NUM_WEP_KEYS; i++) {
 123                 if (ssid->wep_key_len[i] == 0)
 124                         continue;
 125
 126                 set = 1;
 127                 wpa_drv_set_key(wpa_s, WPA_ALG_WEP,
 128                                 (u8 *) "\xff\xff\xff\xff\xff\xff",
 129                                 i, i == ssid->wep_tx_keyidx, (u8 *) "", 0,
 130                                 ssid->wep_key[i], ssid->wep_key_len[i]);
 131         }
 132
 133         return set;
 134 }
 135
 136
 137 static int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s,
 138                                            struct wpa_ssid *ssid)
 139 {
 140         u8 key[32];
 141         size_t keylen;
 142         wpa_alg alg;
 143         u8 seq[6] = { 0 };
 144
 145         /* IBSS/WPA-None uses only one key (Group) for both receiving and
 146          * sending unicast and multicast packets. */
 147
 148         if (ssid->mode != IEEE80211_MODE_IBSS) {
 149                 wpa_printf(MSG_INFO, "WPA: Invalid mode %d (not IBSS/ad-hoc) "
 150                            "for WPA-None", ssid->mode);
 151                 return -1;
 152         }
 153
 154         if (!ssid->psk_set) {
 155                 wpa_printf(MSG_INFO, "WPA: No PSK configured for WPA-None");
 156                 return -1;
 157         }
 158
 159         switch (wpa_s->group_cipher) {
 160         case WPA_CIPHER_CCMP:
 161                 os_memcpy(key, ssid->psk, 16);
 162                 keylen = 16;
 163                 alg = WPA_ALG_CCMP;
 164                 break;
 165         case WPA_CIPHER_TKIP:
 166                 /* WPA-None uses the same Michael MIC key for both TX and RX */
 167                 os_memcpy(key, ssid->psk, 16 + 8);
 168                 os_memcpy(key + 16 + 8, ssid->psk + 16, 8);
 169                 keylen = 32;
 170                 alg = WPA_ALG_TKIP;
 171                 break;
 172         default:
 173                 wpa_printf(MSG_INFO, "WPA: Invalid group cipher %d for "
 174                            "WPA-None", wpa_s->group_cipher);
 175                 return -1;
 176         }
 177
 178         /* TODO: should actually remember the previously used seq#, both for TX
 179          * and RX from each STA.. */
 180
 181         return wpa_drv_set_key(wpa_s, alg, (u8 *) "\xff\xff\xff\xff\xff\xff",
 182                                0, 1, seq, 6, key, keylen);
 183 }
 184
 185
 186 static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx)
 187 {
 188         struct wpa_supplicant *wpa_s = eloop_ctx;
 189         const u8 *bssid = wpa_s->bssid;
 190         if (is_zero_ether_addr(bssid))
 191                 bssid = wpa_s->pending_bssid;
 192         wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.",
 193                 MAC2STR(bssid));
 194         wpa_blacklist_add(wpa_s, bssid);
 195         wpa_sm_notify_disassoc(wpa_s->wpa);
 196         wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 197         wpa_s->reassociate = 1;
 198         wpa_supplicant_req_scan(wpa_s, 0, 0);
 199 }
 200
 201
 202 /**
 203  * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication
 204  * @wpa_s: Pointer to wpa_supplicant data
 205  * @sec: Number of seconds after which to time out authentication
 206  * @usec: Number of microseconds after which to time out authentication
 207  *
 208  * This function is used to schedule a timeout for the current authentication
 209  * attempt.
 210  */
 211 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
 212                                      int sec, int usec)
 213 {
 214         if (wpa_s->conf && wpa_s->conf->ap_scan == 0 && wpa_s->drv_wired)
 215                 return;
 216
 217         wpa_msg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec "
 218                 "%d usec", sec, usec);
 219         eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
 220         eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL);
 221 }
 222
 223
 224 /**
 225  * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout
 226  * @wpa_s: Pointer to wpa_supplicant data
 227  *
 228  * This function is used to cancel authentication timeout scheduled with
 229  * wpa_supplicant_req_auth_timeout() and it is called when authentication has
 230  * been completed.
 231  */
 232 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s)
 233 {
 234         wpa_msg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout");
 235         eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
 236         wpa_blacklist_del(wpa_s, wpa_s->bssid);
 237 }
 238
 239
 240 /**
 241  * wpa_supplicant_initiate_eapol - Configure EAPOL state machine
 242  * @wpa_s: Pointer to wpa_supplicant data
 243  *
 244  * This function is used to configure EAPOL state machine based on the selected
 245  * authentication mode.
 246  */
 247 void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s)
 248 {
 249 #ifdef IEEE8021X_EAPOL
 250         struct eapol_config eapol_conf;
 251         struct wpa_ssid *ssid = wpa_s->current_ssid;
 252
 253 #ifdef CONFIG_IBSS_RSN
 254         if (ssid->mode == IEEE80211_MODE_IBSS &&
 255             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
 256             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
 257                 /*
 258                  * RSN IBSS authentication is per-STA and we can disable the
 259                  * per-BSSID EAPOL authentication.
 260                  */
 261                 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
 262                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
 263                 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
 264                 return;
 265         }
 266 #endif /* CONFIG_IBSS_RSN */
 267
 268         eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 269         eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
 270
 271         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 272             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 273                 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
 274         else
 275                 eapol_sm_notify_portControl(wpa_s->eapol, Auto);
 276
 277         os_memset(&eapol_conf, 0, sizeof(eapol_conf));
 278         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 279                 eapol_conf.accept_802_1x_keys = 1;
 280                 eapol_conf.required_keys = 0;
 281                 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) {
 282                         eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST;
 283                 }
 284                 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) {
 285                         eapol_conf.required_keys |=
 286                                 EAPOL_REQUIRE_KEY_BROADCAST;
 287                 }
 288
 289                 if (wpa_s->conf && wpa_s->drv_wired)
 290                         eapol_conf.required_keys = 0;
 291         }
 292         if (wpa_s->conf)
 293                 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
 294         eapol_conf.workaround = ssid->eap_workaround;
 295         eapol_conf.eap_disabled =
 296                 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) &&
 297                 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 298                 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS;
 299         eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
 300 #endif /* IEEE8021X_EAPOL */
 301 }
 302
 303
 304 /**
 305  * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode
 306  * @wpa_s: Pointer to wpa_supplicant data
 307  * @ssid: Configuration data for the network
 308  *
 309  * This function is used to configure WPA state machine and related parameters
 310  * to a mode where WPA is not enabled. This is called as part of the
 311  * authentication configuration when the selected network does not use WPA.
 312  */
 313 void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
 314                                        struct wpa_ssid *ssid)
 315 {
 316         int i;
 317
 318         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 319                 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS;
 320         else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)
 321                 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
 322         else
 323                 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
 324         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
 325         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
 326         wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
 327         wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 328         wpa_s->group_cipher = WPA_CIPHER_NONE;
 329         wpa_s->mgmt_group_cipher = 0;
 330
 331         for (i = 0; i < NUM_WEP_KEYS; i++) {
 332                 if (ssid->wep_key_len[i] > 5) {
 333                         wpa_s->pairwise_cipher = WPA_CIPHER_WEP104;
 334                         wpa_s->group_cipher = WPA_CIPHER_WEP104;
 335                         break;
 336                 } else if (ssid->wep_key_len[i] > 0) {
 337                         wpa_s->pairwise_cipher = WPA_CIPHER_WEP40;
 338                         wpa_s->group_cipher = WPA_CIPHER_WEP40;
 339                         break;
 340                 }
 341         }
 342
 343         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0);
 344         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
 345         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
 346                          wpa_s->pairwise_cipher);
 347         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
 348 #ifdef CONFIG_IEEE80211W
 349         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
 350                          wpa_s->mgmt_group_cipher);
 351 #endif /* CONFIG_IEEE80211W */
 352
 353         pmksa_cache_clear_current(wpa_s->wpa);
 354 }
 355
 356
 357 static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s)
 358 {
 359         scard_deinit(wpa_s->scard);
 360         wpa_s->scard = NULL;
 361         wpa_sm_set_scard_ctx(wpa_s->wpa, NULL);
 362         eapol_sm_register_scard_ctx(wpa_s->eapol, NULL);
 363         l2_packet_deinit(wpa_s->l2);
 364         wpa_s->l2 = NULL;
 365         if (wpa_s->l2_br) {
 366                 l2_packet_deinit(wpa_s->l2_br);
 367                 wpa_s->l2_br = NULL;
 368         }
 369
 370         if (wpa_s->ctrl_iface) {
 371                 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
 372                 wpa_s->ctrl_iface = NULL;
 373         }
 374         if (wpa_s->conf != NULL) {
 375                 wpa_config_free(wpa_s->conf);
 376                 wpa_s->conf = NULL;
 377         }
 378
 379         os_free(wpa_s->confname);
 380         wpa_s->confname = NULL;
 381
 382         wpa_sm_set_eapol(wpa_s->wpa, NULL);
 383         eapol_sm_deinit(wpa_s->eapol);
 384         wpa_s->eapol = NULL;
 385
 386         rsn_preauth_deinit(wpa_s->wpa);
 387
 388         pmksa_candidate_free(wpa_s->wpa);
 389         wpa_sm_deinit(wpa_s->wpa);
 390         wpa_s->wpa = NULL;
 391         wpa_blacklist_clear(wpa_s);
 392
 393         wpa_scan_results_free(wpa_s->scan_res);
 394         wpa_s->scan_res = NULL;
 395
 396         wpa_supplicant_cancel_scan(wpa_s);
 397         wpa_supplicant_cancel_auth_timeout(wpa_s);
 398
 399         ieee80211_sta_deinit(wpa_s);
 400
 401         wpas_wps_deinit(wpa_s);
 402
 403 #ifdef CONFIG_IBSS_RSN
 404         ibss_rsn_deinit(wpa_s->ibss_rsn);
 405         wpa_s->ibss_rsn = NULL;
 406 #endif /* CONFIG_IBSS_RSN */
 407 }
 408
 409
 410 /**
 411  * wpa_clear_keys - Clear keys configured for the driver
 412  * @wpa_s: Pointer to wpa_supplicant data
 413  * @addr: Previously used BSSID or %NULL if not available
 414  *
 415  * This function clears the encryption keys that has been previously configured
 416  * for the driver.
 417  */
 418 void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr)
 419 {
 420         u8 *bcast = (u8 *) "\xff\xff\xff\xff\xff\xff";
 421
 422         if (wpa_s->keys_cleared) {
 423                 /* Some drivers (e.g., ndiswrapper & NDIS drivers) seem to have
 424                  * timing issues with keys being cleared just before new keys
 425                  * are set or just after association or something similar. This
 426                  * shows up in group key handshake failing often because of the
 427                  * client not receiving the first encrypted packets correctly.
 428                  * Skipping some of the extra key clearing steps seems to help
 429                  * in completing group key handshake more reliably. */
 430                 wpa_printf(MSG_DEBUG, "No keys have been configured - "
 431                            "skip key clearing");
 432                 return;
 433         }
 434
 435         /* MLME-DELETEKEYS.request */
 436         wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 0, 0, NULL, 0, NULL, 0);
 437         wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 1, 0, NULL, 0, NULL, 0);
 438         wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 2, 0, NULL, 0, NULL, 0);
 439         wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 3, 0, NULL, 0, NULL, 0);
 440         if (addr) {
 441                 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL,
 442                                 0);
 443                 /* MLME-SETPROTECTION.request(None) */
 444                 wpa_drv_mlme_setprotection(
 445                         wpa_s, addr,
 446                         MLME_SETPROTECTION_PROTECT_TYPE_NONE,
 447                         MLME_SETPROTECTION_KEY_TYPE_PAIRWISE);
 448         }
 449         wpa_s->keys_cleared = 1;
 450 }
 451
 452
 453 /**
 454  * wpa_supplicant_state_txt - Get the connection state name as a text string
 455  * @state: State (wpa_state; WPA_*)
 456  * Returns: The state name as a printable text string
 457  */
 458 const char * wpa_supplicant_state_txt(int state)
 459 {
 460         switch (state) {
 461         case WPA_DISCONNECTED:
 462                 return "DISCONNECTED";
 463         case WPA_INACTIVE:
 464                 return "INACTIVE";
 465         case WPA_SCANNING:
 466                 return "SCANNING";
 467         case WPA_ASSOCIATING:
 468                 return "ASSOCIATING";
 469         case WPA_ASSOCIATED:
 470                 return "ASSOCIATED";
 471         case WPA_4WAY_HANDSHAKE:
 472                 return "4WAY_HANDSHAKE";
 473         case WPA_GROUP_HANDSHAKE:
 474                 return "GROUP_HANDSHAKE";
 475         case WPA_COMPLETED:
 476                 return "COMPLETED";
 477         default:
 478                 return "UNKNOWN";
 479         }
 480 }
 481
 482
 483 /**
 484  * wpa_supplicant_set_state - Set current connection state
 485  * @wpa_s: Pointer to wpa_supplicant data
 486  * @state: The new connection state
 487  *
 488  * This function is called whenever the connection state changes, e.g.,
 489  * association is completed for WPA/WPA2 4-Way Handshake is started.
 490  */
 491 void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s, wpa_states state)
 492 {
 493         wpa_printf(MSG_DEBUG, "State: %s -> %s",
 494                    wpa_supplicant_state_txt(wpa_s->wpa_state),
 495                    wpa_supplicant_state_txt(state));
 496
 497         wpa_supplicant_dbus_notify_state_change(wpa_s, state,
 498                                                 wpa_s->wpa_state);
 499
 500         if (state == WPA_COMPLETED && wpa_s->new_connection) {
 501 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
 502                 struct wpa_ssid *ssid = wpa_s->current_ssid;
 503                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to "
 504                         MACSTR " completed %s [id=%d id_str=%s]",
 505                         MAC2STR(wpa_s->bssid), wpa_s->reassociated_connection ?
 506                         "(reauth)" : "(auth)",
 507                         ssid ? ssid->id : -1,
 508                         ssid && ssid->id_str ? ssid->id_str : "");
 509 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
 510                 wpa_s->new_connection = 0;
 511                 wpa_s->reassociated_connection = 1;
 512                 wpa_drv_set_operstate(wpa_s, 1);
 513         } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING ||
 514                    state == WPA_ASSOCIATED) {
 515                 wpa_s->new_connection = 1;
 516                 wpa_drv_set_operstate(wpa_s, 0);
 517         }
 518         wpa_s->wpa_state = state;
 519 }
 520
 521
 522 static void wpa_supplicant_terminate(int sig, void *eloop_ctx,
 523                                      void *signal_ctx)
 524 {
 525         struct wpa_global *global = eloop_ctx;
 526         struct wpa_supplicant *wpa_s;
 527         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 528                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING "- signal %d "
 529                         "received", sig);
 530         }
 531         eloop_terminate();
 532 }
 533
 534
 535 static void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s)
 536 {
 537         wpa_s->pairwise_cipher = 0;
 538         wpa_s->group_cipher = 0;
 539         wpa_s->mgmt_group_cipher = 0;
 540         wpa_s->key_mgmt = 0;
 541         wpa_s->wpa_state = WPA_DISCONNECTED;
 542 }
 543
 544
 545 /**
 546  * wpa_supplicant_reload_configuration - Reload configuration data
 547  * @wpa_s: Pointer to wpa_supplicant data
 548  * Returns: 0 on success or -1 if configuration parsing failed
 549  *
 550  * This function can be used to request that the configuration data is reloaded
 551  * (e.g., after configuration file change). This function is reloading
 552  * configuration only for one interface, so this may need to be called multiple
 553  * times if %wpa_supplicant is controlling multiple interfaces and all
 554  * interfaces need reconfiguration.
 555  */
 556 int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s)
 557 {
 558         struct wpa_config *conf;
 559         int reconf_ctrl;
 560         if (wpa_s->confname == NULL)
 561                 return -1;
 562         conf = wpa_config_read(wpa_s->confname);
 563         if (conf == NULL) {
 564                 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration "
 565                         "file '%s' - exiting", wpa_s->confname);
 566                 return -1;
 567         }
 568
 569         reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface
 570                 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface &&
 571                     os_strcmp(conf->ctrl_interface,
 572                               wpa_s->conf->ctrl_interface) != 0);
 573
 574         if (reconf_ctrl && wpa_s->ctrl_iface) {
 575                 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
 576                 wpa_s->ctrl_iface = NULL;
 577         }
 578
 579         eapol_sm_invalidate_cached_session(wpa_s->eapol);
 580         wpa_s->current_ssid = NULL;
 581         /*
 582          * TODO: should notify EAPOL SM about changes in opensc_engine_path,
 583          * pkcs11_engine_path, pkcs11_module_path.
 584          */
 585         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
 586                 /*
 587                  * Clear forced success to clear EAP state for next
 588                  * authentication.
 589                  */
 590                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 591         }
 592         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 593         wpa_sm_set_config(wpa_s->wpa, NULL);
 594         wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
 595         rsn_preauth_deinit(wpa_s->wpa);
 596         wpa_config_free(wpa_s->conf);
 597         wpa_s->conf = conf;
 598         if (reconf_ctrl)
 599                 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
 600
 601         wpa_supplicant_clear_status(wpa_s);
 602         wpa_s->reassociate = 1;
 603         wpa_supplicant_req_scan(wpa_s, 0, 0);
 604         wpa_msg(wpa_s, MSG_DEBUG, "Reconfiguration completed");
 605         return 0;
 606 }
 607
 608
 609 static void wpa_supplicant_reconfig(int sig, void *eloop_ctx,
 610                                     void *signal_ctx)
 611 {
 612         struct wpa_global *global = eloop_ctx;
 613         struct wpa_supplicant *wpa_s;
 614         wpa_printf(MSG_DEBUG, "Signal %d received - reconfiguring", sig);
 615         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 616                 if (wpa_supplicant_reload_configuration(wpa_s) < 0) {
 617                         eloop_terminate();
 618                 }
 619         }
 620 }
 621
 622
 623 static wpa_cipher cipher_suite2driver(int cipher)
 624 {
 625         switch (cipher) {
 626         case WPA_CIPHER_NONE:
 627                 return CIPHER_NONE;
 628         case WPA_CIPHER_WEP40:
 629                 return CIPHER_WEP40;
 630         case WPA_CIPHER_WEP104:
 631                 return CIPHER_WEP104;
 632         case WPA_CIPHER_CCMP:
 633                 return CIPHER_CCMP;
 634         case WPA_CIPHER_TKIP:
 635         default:
 636                 return CIPHER_TKIP;
 637         }
 638 }
 639
 640
 641 static wpa_key_mgmt key_mgmt2driver(int key_mgmt)
 642 {
 643         switch (key_mgmt) {
 644         case WPA_KEY_MGMT_NONE:
 645                 return KEY_MGMT_NONE;
 646         case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
 647                 return KEY_MGMT_802_1X_NO_WPA;
 648         case WPA_KEY_MGMT_IEEE8021X:
 649                 return KEY_MGMT_802_1X;
 650         case WPA_KEY_MGMT_WPA_NONE:
 651                 return KEY_MGMT_WPA_NONE;
 652         case WPA_KEY_MGMT_FT_IEEE8021X:
 653                 return KEY_MGMT_FT_802_1X;
 654         case WPA_KEY_MGMT_FT_PSK:
 655                 return KEY_MGMT_FT_PSK;
 656         case WPA_KEY_MGMT_IEEE8021X_SHA256:
 657                 return KEY_MGMT_802_1X_SHA256;
 658         case WPA_KEY_MGMT_PSK_SHA256:
 659                 return KEY_MGMT_PSK_SHA256;
 660         case WPA_KEY_MGMT_WPS:
 661                 return KEY_MGMT_WPS;
 662         case WPA_KEY_MGMT_PSK:
 663         default:
 664                 return KEY_MGMT_PSK;
 665         }
 666 }
 667
 668
 669 static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s,
 670                                          struct wpa_ssid *ssid,
 671                                          struct wpa_ie_data *ie)
 672 {
 673         int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie);
 674         if (ret) {
 675                 if (ret == -2) {
 676                         wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE "
 677                                 "from association info");
 678                 }
 679                 return -1;
 680         }
 681
 682         wpa_printf(MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set cipher "
 683                    "suites");
 684         if (!(ie->group_cipher & ssid->group_cipher)) {
 685                 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group "
 686                         "cipher 0x%x (mask 0x%x) - reject",
 687                         ie->group_cipher, ssid->group_cipher);
 688                 return -1;
 689         }
 690         if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) {
 691                 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise "
 692                         "cipher 0x%x (mask 0x%x) - reject",
 693                         ie->pairwise_cipher, ssid->pairwise_cipher);
 694                 return -1;
 695         }
 696         if (!(ie->key_mgmt & ssid->key_mgmt)) {
 697                 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key "
 698                         "management 0x%x (mask 0x%x) - reject",
 699                         ie->key_mgmt, ssid->key_mgmt);
 700                 return -1;
 701         }
 702
 703 #ifdef CONFIG_IEEE80211W
 704         if (!(ie->capabilities & WPA_CAPABILITY_MFPC) &&
 705             ssid->ieee80211w == IEEE80211W_REQUIRED) {
 706                 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP "
 707                         "that does not support management frame protection - "
 708                         "reject");
 709                 return -1;
 710         }
 711 #endif /* CONFIG_IEEE80211W */
 712
 713         return 0;
 714 }
 715
 716
 717 /**
 718  * wpa_supplicant_set_suites - Set authentication and encryption parameters
 719  * @wpa_s: Pointer to wpa_supplicant data
 720  * @bss: Scan results for the selected BSS, or %NULL if not available
 721  * @ssid: Configuration data for the selected network
 722  * @wpa_ie: Buffer for the WPA/RSN IE
 723  * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the
 724  * used buffer length in case the functions returns success.
 725  * Returns: 0 on success or -1 on failure
 726  *
 727  * This function is used to configure authentication and encryption parameters
 728  * based on the network configuration and scan result for the selected BSS (if
 729  * available).
 730  */
 731 int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
 732                               struct wpa_scan_res *bss,
 733                               struct wpa_ssid *ssid,
 734                               u8 *wpa_ie, size_t *wpa_ie_len)
 735 {
 736         struct wpa_ie_data ie;
 737         int sel, proto;
 738         const u8 *bss_wpa, *bss_rsn;
 739
 740         if (bss) {
 741                 bss_wpa = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 742                 bss_rsn = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 743         } else
 744                 bss_wpa = bss_rsn = NULL;
 745
 746         if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) &&
 747             wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 &&
 748             (ie.group_cipher & ssid->group_cipher) &&
 749             (ie.pairwise_cipher & ssid->pairwise_cipher) &&
 750             (ie.key_mgmt & ssid->key_mgmt)) {
 751                 wpa_msg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0");
 752                 proto = WPA_PROTO_RSN;
 753         } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) &&
 754                    wpa_parse_wpa_ie(bss_wpa, 2 +bss_wpa[1], &ie) == 0 &&
 755                    (ie.group_cipher & ssid->group_cipher) &&
 756                    (ie.pairwise_cipher & ssid->pairwise_cipher) &&
 757                    (ie.key_mgmt & ssid->key_mgmt)) {
 758                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0");
 759                 proto = WPA_PROTO_WPA;
 760         } else if (bss) {
 761                 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN");
 762                 return -1;
 763         } else {
 764                 if (ssid->proto & WPA_PROTO_RSN)
 765                         proto = WPA_PROTO_RSN;
 766                 else
 767                         proto = WPA_PROTO_WPA;
 768                 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) {
 769                         os_memset(&ie, 0, sizeof(ie));
 770                         ie.group_cipher = ssid->group_cipher;
 771                         ie.pairwise_cipher = ssid->pairwise_cipher;
 772                         ie.key_mgmt = ssid->key_mgmt;
 773 #ifdef CONFIG_IEEE80211W
 774                         ie.mgmt_group_cipher =
 775                                 ssid->ieee80211w != NO_IEEE80211W ?
 776                                 WPA_CIPHER_AES_128_CMAC : 0;
 777 #endif /* CONFIG_IEEE80211W */
 778                         wpa_printf(MSG_DEBUG, "WPA: Set cipher suites based "
 779                                    "on configuration");
 780                 } else
 781                         proto = ie.proto;
 782         }
 783
 784         wpa_printf(MSG_DEBUG, "WPA: Selected cipher suites: group %d "
 785                    "pairwise %d key_mgmt %d proto %d",
 786                    ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto);
 787 #ifdef CONFIG_IEEE80211W
 788         if (ssid->ieee80211w) {
 789                 wpa_printf(MSG_DEBUG, "WPA: Selected mgmt group cipher %d",
 790                            ie.mgmt_group_cipher);
 791         }
 792 #endif /* CONFIG_IEEE80211W */
 793
 794         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto);
 795         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED,
 796                          !!(ssid->proto & WPA_PROTO_RSN));
 797
 798         if (bss || !wpa_s->ap_ies_from_associnfo) {
 799                 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
 800                                          bss_wpa ? 2 + bss_wpa[1] : 0) ||
 801                     wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
 802                                          bss_rsn ? 2 + bss_rsn[1] : 0))
 803                         return -1;
 804         }
 805
 806         sel = ie.group_cipher & ssid->group_cipher;
 807         if (sel & WPA_CIPHER_CCMP) {
 808                 wpa_s->group_cipher = WPA_CIPHER_CCMP;
 809                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK CCMP");
 810         } else if (sel & WPA_CIPHER_TKIP) {
 811                 wpa_s->group_cipher = WPA_CIPHER_TKIP;
 812                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK TKIP");
 813         } else if (sel & WPA_CIPHER_WEP104) {
 814                 wpa_s->group_cipher = WPA_CIPHER_WEP104;
 815                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP104");
 816         } else if (sel & WPA_CIPHER_WEP40) {
 817                 wpa_s->group_cipher = WPA_CIPHER_WEP40;
 818                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP40");
 819         } else {
 820                 wpa_printf(MSG_WARNING, "WPA: Failed to select group cipher.");
 821                 return -1;
 822         }
 823
 824         sel = ie.pairwise_cipher & ssid->pairwise_cipher;
 825         if (sel & WPA_CIPHER_CCMP) {
 826                 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
 827                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK CCMP");
 828         } else if (sel & WPA_CIPHER_TKIP) {
 829                 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
 830                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK TKIP");
 831         } else if (sel & WPA_CIPHER_NONE) {
 832                 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 833                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK NONE");
 834         } else {
 835                 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise "
 836                            "cipher.");
 837                 return -1;
 838         }
 839
 840         sel = ie.key_mgmt & ssid->key_mgmt;
 841         if (0) {
 842 #ifdef CONFIG_IEEE80211R
 843         } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) {
 844                 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X;
 845                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X");
 846         } else if (sel & WPA_KEY_MGMT_FT_PSK) {
 847                 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK;
 848                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK");
 849 #endif /* CONFIG_IEEE80211R */
 850 #ifdef CONFIG_IEEE80211W
 851         } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) {
 852                 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256;
 853                 wpa_msg(wpa_s, MSG_DEBUG,
 854                         "WPA: using KEY_MGMT 802.1X with SHA256");
 855         } else if (sel & WPA_KEY_MGMT_PSK_SHA256) {
 856                 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256;
 857                 wpa_msg(wpa_s, MSG_DEBUG,
 858                         "WPA: using KEY_MGMT PSK with SHA256");
 859 #endif /* CONFIG_IEEE80211W */
 860         } else if (sel & WPA_KEY_MGMT_IEEE8021X) {
 861                 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 862                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X");
 863         } else if (sel & WPA_KEY_MGMT_PSK) {
 864                 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
 865                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK");
 866         } else if (sel & WPA_KEY_MGMT_WPA_NONE) {
 867                 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE;
 868                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE");
 869         } else {
 870                 wpa_printf(MSG_WARNING, "WPA: Failed to select authenticated "
 871                            "key management type.");
 872                 return -1;
 873         }
 874
 875         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
 876         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
 877                          wpa_s->pairwise_cipher);
 878         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
 879
 880 #ifdef CONFIG_IEEE80211W
 881         sel = ie.mgmt_group_cipher;
 882         if (ssid->ieee80211w == NO_IEEE80211W ||
 883             !(ie.capabilities & WPA_CAPABILITY_MFPC))
 884                 sel = 0;
 885         if (sel & WPA_CIPHER_AES_128_CMAC) {
 886                 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
 887                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
 888                         "AES-128-CMAC");
 889         } else {
 890                 wpa_s->mgmt_group_cipher = 0;
 891                 wpa_msg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher");
 892         }
 893         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
 894                          wpa_s->mgmt_group_cipher);
 895 #endif /* CONFIG_IEEE80211W */
 896
 897         if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) {
 898                 wpa_printf(MSG_WARNING, "WPA: Failed to generate WPA IE.");
 899                 return -1;
 900         }
 901
 902         if (ssid->key_mgmt &
 903             (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_PSK_SHA256))
 904                 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN);
 905         else
 906                 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
 907
 908         return 0;
 909 }
 910
 911
 912 /**
 913  * wpa_supplicant_associate - Request association
 914  * @wpa_s: Pointer to wpa_supplicant data
 915  * @bss: Scan results for the selected BSS, or %NULL if not available
 916  * @ssid: Configuration data for the selected network
 917  *
 918  * This function is used to request %wpa_supplicant to associate with a BSS.
 919  */
 920 void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
 921                               struct wpa_scan_res *bss, struct wpa_ssid *ssid)
 922 {
 923         u8 wpa_ie[80];
 924         size_t wpa_ie_len;
 925         int use_crypt, ret, i;
 926         int algs = AUTH_ALG_OPEN_SYSTEM;
 927         wpa_cipher cipher_pairwise, cipher_group;
 928         struct wpa_driver_associate_params params;
 929         int wep_keys_set = 0;
 930         struct wpa_driver_capa capa;
 931         int assoc_failed = 0;
 932
 933         wpa_s->reassociate = 0;
 934         if (bss) {
 935 #ifdef CONFIG_IEEE80211R
 936                 const u8 *md = NULL;
 937 #endif /* CONFIG_IEEE80211R */
 938                 const u8 *ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 939                 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
 940                         " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid),
 941                         ie ? wpa_ssid_txt(ie + 2, ie[1]) : "", bss->freq);
 942                 os_memset(wpa_s->bssid, 0, ETH_ALEN);
 943                 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
 944 #ifdef CONFIG_IEEE80211R
 945                 ie = wpa_scan_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
 946                 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
 947                         md = ie + 2;
 948                 wpa_sm_set_ft_params(wpa_s->wpa, md, NULL, 0, NULL);
 949                 if (md) {
 950                         /* Prepare for the next transition */
 951                         wpa_ft_prepare_auth_request(wpa_s->wpa);
 952                 }
 953 #endif /* CONFIG_IEEE80211R */
 954 #ifdef CONFIG_WPS
 955         } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) &&
 956                    wpa_s->conf->ap_scan == 2 &&
 957                    (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 958                 /* Use ap_scan==1 style network selection to find the network
 959                  */
 960                 wpa_s->scan_req = 2;
 961                 wpa_s->reassociate = 1;
 962                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 963                 return;
 964 #endif /* CONFIG_WPS */
 965         } else {
 966                 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'",
 967                         wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 968                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 969         }
 970         wpa_supplicant_cancel_scan(wpa_s);
 971
 972         /* Starting new association, so clear the possibly used WPA IE from the
 973          * previous association. */
 974         wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
 975
 976         if (wpa_drv_set_mode(wpa_s, ssid->mode)) {
 977                 wpa_printf(MSG_WARNING, "Failed to set operating mode");
 978                 assoc_failed = 1;
 979         }
 980
 981 #ifdef IEEE8021X_EAPOL
 982         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 983                 if (ssid->leap) {
 984                         if (ssid->non_leap == 0)
 985                                 algs = AUTH_ALG_LEAP;
 986                         else
 987                                 algs |= AUTH_ALG_LEAP;
 988                 }
 989         }
 990 #endif /* IEEE8021X_EAPOL */
 991         wpa_printf(MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs);
 992         if (ssid->auth_alg) {
 993                 algs = 0;
 994                 if (ssid->auth_alg & WPA_AUTH_ALG_OPEN)
 995                         algs |= AUTH_ALG_OPEN_SYSTEM;
 996                 if (ssid->auth_alg & WPA_AUTH_ALG_SHARED)
 997                         algs |= AUTH_ALG_SHARED_KEY;
 998                 if (ssid->auth_alg & WPA_AUTH_ALG_LEAP)
 999                         algs |= AUTH_ALG_LEAP;
1000                 wpa_printf(MSG_DEBUG, "Overriding auth_alg selection: 0x%x",
1001                            algs);
1002         }
1003         wpa_drv_set_auth_alg(wpa_s, algs);
1004
1005         if (bss && (wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
1006                     wpa_scan_get_ie(bss, WLAN_EID_RSN)) &&
1007             (ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
1008                                WPA_KEY_MGMT_FT_IEEE8021X |
1009                                WPA_KEY_MGMT_FT_PSK |
1010                                WPA_KEY_MGMT_IEEE8021X_SHA256 |
1011                                WPA_KEY_MGMT_PSK_SHA256))) {
1012                 int try_opportunistic;
1013                 try_opportunistic = ssid->proactive_key_caching &&
1014                         (ssid->proto & WPA_PROTO_RSN);
1015                 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
1016                                             wpa_s->current_ssid,
1017                                             try_opportunistic) == 0)
1018                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
1019                 wpa_ie_len = sizeof(wpa_ie);
1020                 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
1021                                               wpa_ie, &wpa_ie_len)) {
1022                         wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
1023                                    "management and encryption suites");
1024                         return;
1025                 }
1026         } else if (ssid->key_mgmt &
1027                    (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
1028                     WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK |
1029                     WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 |
1030                     WPA_KEY_MGMT_IEEE8021X_SHA256)) {
1031                 wpa_ie_len = sizeof(wpa_ie);
1032                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
1033                                               wpa_ie, &wpa_ie_len)) {
1034                         wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key "
1035                                    "management and encryption suites (no scan "
1036                                    "results)");
1037                         return;
1038                 }
1039 #ifdef CONFIG_WPS
1040         } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
1041                 struct wpabuf *wps_ie;
1042                 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
1043                 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) {
1044                         wpa_ie_len = wpabuf_len(wps_ie);
1045                         os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len);
1046                 } else
1047                         wpa_ie_len = 0;
1048                 wpabuf_free(wps_ie);
1049                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1050 #endif /* CONFIG_WPS */
1051         } else {
1052                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1053                 wpa_ie_len = 0;
1054         }
1055
1056         wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL);
1057         use_crypt = 1;
1058         cipher_pairwise = cipher_suite2driver(wpa_s->pairwise_cipher);
1059         cipher_group = cipher_suite2driver(wpa_s->group_cipher);
1060         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1061             wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1062                 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE)
1063                         use_crypt = 0;
1064                 if (wpa_set_wep_keys(wpa_s, ssid)) {
1065                         use_crypt = 1;
1066                         wep_keys_set = 1;
1067                 }
1068         }
1069         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)
1070                 use_crypt = 0;
1071
1072 #ifdef IEEE8021X_EAPOL
1073         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1074                 if ((ssid->eapol_flags &
1075                      (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
1076                       EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 &&
1077                     !wep_keys_set) {
1078                         use_crypt = 0;
1079                 } else {
1080                         /* Assume that dynamic WEP-104 keys will be used and
1081                          * set cipher suites in order for drivers to expect
1082                          * encryption. */
1083                         cipher_pairwise = cipher_group = CIPHER_WEP104;
1084                 }
1085         }
1086 #endif /* IEEE8021X_EAPOL */
1087
1088         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1089                 /* Set the key before (and later after) association */
1090                 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1091         }
1092
1093         wpa_drv_set_drop_unencrypted(wpa_s, use_crypt);
1094         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1095         os_memset(&params, 0, sizeof(params));
1096         if (bss) {
1097                 const u8 *ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
1098                 params.bssid = bss->bssid;
1099                 params.ssid = ie ? ie + 2 : (u8 *) "";
1100                 params.ssid_len = ie ? ie[1] : 0;
1101                 params.freq = bss->freq;
1102         } else {
1103                 params.ssid = ssid->ssid;
1104                 params.ssid_len = ssid->ssid_len;
1105         }
1106         if (ssid->mode == 1 && ssid->frequency > 0 && params.freq == 0)
1107                 params.freq = ssid->frequency; /* Initial channel for IBSS */
1108         params.wpa_ie = wpa_ie;
1109         params.wpa_ie_len = wpa_ie_len;
1110         params.pairwise_suite = cipher_pairwise;
1111         params.group_suite = cipher_group;
1112         params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
1113         params.auth_alg = algs;
1114         params.mode = ssid->mode;
1115         for (i = 0; i < NUM_WEP_KEYS; i++) {
1116                 if (ssid->wep_key_len[i])
1117                         params.wep_key[i] = ssid->wep_key[i];
1118                 params.wep_key_len[i] = ssid->wep_key_len[i];
1119         }
1120         params.wep_tx_keyidx = ssid->wep_tx_keyidx;
1121
1122         if (wpa_s->driver_4way_handshake &&
1123             (params.key_mgmt_suite == KEY_MGMT_PSK ||
1124              params.key_mgmt_suite == KEY_MGMT_FT_PSK)) {
1125                 params.passphrase = ssid->passphrase;
1126                 if (ssid->psk_set)
1127                         params.psk = ssid->psk;
1128         }
1129
1130 #ifdef CONFIG_IEEE80211W
1131         switch (ssid->ieee80211w) {
1132         case NO_IEEE80211W:
1133                 params.mgmt_frame_protection = NO_MGMT_FRAME_PROTECTION;
1134                 break;
1135         case IEEE80211W_OPTIONAL:
1136                 params.mgmt_frame_protection = MGMT_FRAME_PROTECTION_OPTIONAL;
1137                 break;
1138         case IEEE80211W_REQUIRED:
1139                 params.mgmt_frame_protection = MGMT_FRAME_PROTECTION_REQUIRED;
1140                 break;
1141         }
1142         if (ssid->ieee80211w != NO_IEEE80211W && bss) {
1143                 const u8 *rsn = wpa_scan_get_ie(bss, WLAN_EID_RSN);
1144                 struct wpa_ie_data ie;
1145                 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 &&
1146                     ie.capabilities &
1147                     (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
1148                         wpa_printf(MSG_DEBUG, "WPA: Selected AP supports MFP: "
1149                                    "require MFP");
1150                         params.mgmt_frame_protection =
1151                                 MGMT_FRAME_PROTECTION_REQUIRED;
1152                 }
1153         }
1154 #endif /* CONFIG_IEEE80211W */
1155
1156         if (wpa_s->use_client_mlme)
1157                 ret = ieee80211_sta_associate(wpa_s, &params);
1158         else
1159                 ret = wpa_drv_associate(wpa_s, &params);
1160         if (ret < 0) {
1161                 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
1162                         "failed");
1163                 /* try to continue anyway; new association will be tried again
1164                  * after timeout */
1165                 assoc_failed = 1;
1166         }
1167
1168         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1169                 /* Set the key after the association just in case association
1170                  * cleared the previously configured key. */
1171                 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1172                 /* No need to timeout authentication since there is no key
1173                  * management. */
1174                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1175                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1176 #ifdef CONFIG_IBSS_RSN
1177         } else if (ssid->mode == IEEE80211_MODE_IBSS &&
1178                    wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1179                    wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
1180                 ibss_rsn_set_psk(wpa_s->ibss_rsn, ssid->psk);
1181                 /*
1182                  * RSN IBSS authentication is per-STA and we can disable the
1183                  * per-BSSID authentication.
1184                  */
1185                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1186                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1187 #endif /* CONFIG_IBSS_RSN */
1188         } else {
1189                 /* Timeout for IEEE 802.11 authentication and association */
1190                 int timeout = 60;
1191
1192                 if (assoc_failed) {
1193                         /* give IBSS a bit more time */
1194                         timeout = ssid->mode ? 10 : 5;
1195                 } else if (wpa_s->conf->ap_scan == 1) {
1196                         /* give IBSS a bit more time */
1197                         timeout = ssid->mode ? 20 : 10;
1198                 }
1199                 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0);
1200         }
1201
1202         if (wep_keys_set && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1203             capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC) {
1204                 /* Set static WEP keys again */
1205                 wpa_set_wep_keys(wpa_s, ssid);
1206         }
1207
1208         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) {
1209                 /*
1210                  * Do not allow EAP session resumption between different
1211                  * network configurations.
1212                  */
1213                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
1214         }
1215         wpa_s->current_ssid = ssid;
1216         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
1217         wpa_supplicant_initiate_eapol(wpa_s);
1218 }
1219
1220
1221 /**
1222  * wpa_supplicant_disassociate - Disassociate the current connection
1223  * @wpa_s: Pointer to wpa_supplicant data
1224  * @reason_code: IEEE 802.11 reason code for the disassociate frame
1225  *
1226  * This function is used to request %wpa_supplicant to disassociate with the
1227  * current AP.
1228  */
1229 void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
1230                                  int reason_code)
1231 {
1232         u8 *addr = NULL;
1233         if (!is_zero_ether_addr(wpa_s->bssid)) {
1234                 if (wpa_s->use_client_mlme)
1235                         ieee80211_sta_disassociate(wpa_s, reason_code);
1236                 else
1237                         wpa_drv_disassociate(wpa_s, wpa_s->bssid, reason_code);
1238                 addr = wpa_s->bssid;
1239         }
1240         wpa_clear_keys(wpa_s, addr);
1241         wpa_supplicant_mark_disassoc(wpa_s);
1242         wpa_s->current_ssid = NULL;
1243         wpa_sm_set_config(wpa_s->wpa, NULL);
1244         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1245 }
1246
1247
1248 /**
1249  * wpa_supplicant_deauthenticate - Deauthenticate the current connection
1250  * @wpa_s: Pointer to wpa_supplicant data
1251  * @reason_code: IEEE 802.11 reason code for the deauthenticate frame
1252  *
1253  * This function is used to request %wpa_supplicant to deauthenticate from the
1254  * current AP.
1255  */
1256 void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
1257                                    int reason_code)
1258 {
1259         u8 *addr = NULL;
1260         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1261         if (!is_zero_ether_addr(wpa_s->bssid)) {
1262                 if (wpa_s->use_client_mlme)
1263                         ieee80211_sta_deauthenticate(wpa_s, reason_code);
1264                 else
1265                         wpa_drv_deauthenticate(wpa_s, wpa_s->bssid,
1266                                                reason_code);
1267                 addr = wpa_s->bssid;
1268         }
1269         wpa_clear_keys(wpa_s, addr);
1270         wpa_s->current_ssid = NULL;
1271         wpa_sm_set_config(wpa_s->wpa, NULL);
1272         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1273         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1274         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1275 }
1276
1277
1278 static int wpa_supplicant_get_scan_results_old(struct wpa_supplicant *wpa_s)
1279 {
1280 #define SCAN_AP_LIMIT 128
1281         struct wpa_scan_result *results;
1282         int num, i;
1283         struct wpa_scan_results *res;
1284
1285         results = os_malloc(SCAN_AP_LIMIT * sizeof(struct wpa_scan_result));
1286         if (results == NULL) {
1287                 wpa_printf(MSG_WARNING, "Failed to allocate memory for scan "
1288                            "results");
1289                 return -1;
1290         }
1291
1292         num = wpa_drv_get_scan_results(wpa_s, results, SCAN_AP_LIMIT);
1293         wpa_printf(MSG_DEBUG, "Scan results: %d", num);
1294         if (num < 0) {
1295                 wpa_printf(MSG_DEBUG, "Failed to get scan results");
1296                 os_free(results);
1297                 return -1;
1298         }
1299         if (num > SCAN_AP_LIMIT) {
1300                 wpa_printf(MSG_INFO, "Not enough room for all APs (%d < %d)",
1301                            num, SCAN_AP_LIMIT);
1302                 num = SCAN_AP_LIMIT;
1303         }
1304
1305         wpa_scan_results_free(wpa_s->scan_res);
1306         wpa_s->scan_res = NULL;
1307
1308         /* Convert old scan result data structure to the new one */
1309         res = os_zalloc(sizeof(*res));
1310         if (res == NULL) {
1311                 os_free(results);
1312                 return -1;
1313         }
1314         res->res = os_zalloc(num * sizeof(struct wpa_scan_res *));
1315         if (res->res == NULL) {
1316                 os_free(results);
1317                 os_free(res);
1318                 return -1;
1319         }
1320
1321         for (i = 0; i < num; i++) {
1322                 struct wpa_scan_result *bss = &results[i];
1323                 struct wpa_scan_res *r;
1324                 size_t ie_len;
1325                 u8 *pos;
1326
1327                 ie_len = 2 + bss->ssid_len + bss->rsn_ie_len + bss->wpa_ie_len;
1328                 if (bss->maxrate)
1329                         ie_len += 3;
1330                 if (bss->mdie_present)
1331                         ie_len += 5;
1332
1333                 r = os_zalloc(sizeof(*r) + ie_len);
1334                 if (r == NULL)
1335                         break;
1336
1337                 os_memcpy(r->bssid, bss->bssid, ETH_ALEN);
1338                 r->freq = bss->freq;
1339                 r->caps = bss->caps;
1340                 r->qual = bss->qual;
1341                 r->noise = bss->noise;
1342                 r->level = bss->level;
1343                 r->tsf = bss->tsf;
1344                 r->ie_len = ie_len;
1345
1346                 pos = (u8 *) (r + 1);
1347
1348                 /* SSID IE */
1349                 *pos++ = WLAN_EID_SSID;
1350                 *pos++ = bss->ssid_len;
1351                 os_memcpy(pos, bss->ssid, bss->ssid_len);
1352                 pos += bss->ssid_len;
1353
1354                 if (bss->maxrate) {
1355                         /* Fake Supported Rate IE to include max rate */
1356                         *pos++ = WLAN_EID_SUPP_RATES;
1357                         *pos++ = 1;
1358                         *pos++ = bss->maxrate;
1359                 }
1360
1361                 if (bss->rsn_ie_len) {
1362                         os_memcpy(pos, bss->rsn_ie, bss->rsn_ie_len);
1363                         pos += bss->rsn_ie_len;
1364                 }
1365
1366                 if (bss->mdie_present) {
1367                         os_memcpy(pos, bss->mdie, 5);
1368                         pos += 5;
1369                 }
1370
1371                 if (bss->wpa_ie_len) {
1372                         os_memcpy(pos, bss->wpa_ie, bss->wpa_ie_len);
1373                         pos += bss->wpa_ie_len;
1374                 }
1375
1376                 res->res[res->num++] = r;
1377         }
1378
1379         os_free(results);
1380         wpa_s->scan_res = res;
1381
1382         return 0;
1383 }
1384
1385
1386 /**
1387  * wpa_supplicant_get_scan_results - Get scan results
1388  * @wpa_s: Pointer to wpa_supplicant data
1389  * Returns: 0 on success, -1 on failure
1390  *
1391  * This function is request the current scan results from the driver and stores
1392  * a local copy of the results in wpa_s->scan_res.
1393  */
1394 int wpa_supplicant_get_scan_results(struct wpa_supplicant *wpa_s)
1395 {
1396         int ret;
1397
1398         if (wpa_s->use_client_mlme) {
1399                 wpa_scan_results_free(wpa_s->scan_res);
1400                 wpa_s->scan_res = ieee80211_sta_get_scan_results(wpa_s);
1401                 if (wpa_s->scan_res == NULL) {
1402                         wpa_printf(MSG_DEBUG, "Failed to get scan results");
1403                         ret = -1;
1404                 } else
1405                         ret = 0;
1406         } else if (wpa_s->driver->get_scan_results2 == NULL)
1407                 ret = wpa_supplicant_get_scan_results_old(wpa_s);
1408         else {
1409                 wpa_scan_results_free(wpa_s->scan_res);
1410                 wpa_s->scan_res = wpa_drv_get_scan_results2(wpa_s);
1411                 if (wpa_s->scan_res == NULL) {
1412                         wpa_printf(MSG_DEBUG, "Failed to get scan results");
1413                         ret = -1;
1414                 } else
1415                         ret = 0;
1416         }
1417
1418         if (wpa_s->scan_res)
1419                 wpa_scan_sort_results(wpa_s->scan_res);
1420
1421         return ret;
1422 }
1423
1424
1425 /**
1426  * wpa_supplicant_get_ssid - Get a pointer to the current network structure
1427  * @wpa_s: Pointer to wpa_supplicant data
1428  * Returns: A pointer to the current network structure or %NULL on failure
1429  */
1430 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
1431 {
1432         struct wpa_ssid *entry;
1433         u8 ssid[MAX_SSID_LEN];
1434         int res;
1435         size_t ssid_len;
1436         u8 bssid[ETH_ALEN];
1437         int wired;
1438
1439         if (wpa_s->use_client_mlme) {
1440                 if (ieee80211_sta_get_ssid(wpa_s, ssid, &ssid_len)) {
1441                         wpa_printf(MSG_WARNING, "Could not read SSID from "
1442                                    "MLME.");
1443                         return NULL;
1444                 }
1445         } else {
1446                 res = wpa_drv_get_ssid(wpa_s, ssid);
1447                 if (res < 0) {
1448                         wpa_printf(MSG_WARNING, "Could not read SSID from "
1449                                    "driver.");
1450                         return NULL;
1451                 }
1452                 ssid_len = res;
1453         }
1454
1455         if (wpa_s->use_client_mlme)
1456                 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1457         else if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1458                 wpa_printf(MSG_WARNING, "Could not read BSSID from driver.");
1459                 return NULL;
1460         }
1461
1462         wired = wpa_s->conf->ap_scan == 0 && wpa_s->drv_wired;
1463
1464         entry = wpa_s->conf->ssid;
1465         while (entry) {
1466                 if (!entry->disabled &&
1467                     ((ssid_len == entry->ssid_len &&
1468                       os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) &&
1469                     (!entry->bssid_set ||
1470                      os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1471                         return entry;
1472 #ifdef CONFIG_WPS
1473                 if (!entry->disabled &&
1474                     (entry->key_mgmt & WPA_KEY_MGMT_WPS) &&
1475                     (entry->ssid == NULL || entry->ssid_len == 0) &&
1476                     (!entry->bssid_set ||
1477                      os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1478                         return entry;
1479 #endif /* CONFIG_WPS */
1480                 entry = entry->next;
1481         }
1482
1483         return NULL;
1484 }
1485
1486
1487 static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
1488                                      const char *name)
1489 {
1490         int i;
1491         size_t len;
1492         const char *pos;
1493
1494         if (wpa_s == NULL)
1495                 return -1;
1496
1497         if (wpa_supplicant_drivers[0] == NULL) {
1498                 wpa_printf(MSG_ERROR, "No driver interfaces build into "
1499                            "wpa_supplicant.");
1500                 return -1;
1501         }
1502
1503         if (name == NULL) {
1504                 /* default to first driver in the list */
1505                 wpa_s->driver = wpa_supplicant_drivers[0];
1506                 return 0;
1507         }
1508
1509         pos = os_strchr(name, ',');
1510         if (pos)
1511                 len = pos - name;
1512         else
1513                 len = os_strlen(name);
1514         for (i = 0; wpa_supplicant_drivers[i]; i++) {
1515                 if (os_strlen(wpa_supplicant_drivers[i]->name) == len &&
1516                     os_strncmp(name, wpa_supplicant_drivers[i]->name, len) ==
1517                     0) {
1518                         wpa_s->driver = wpa_supplicant_drivers[i];
1519                         return 0;
1520                 }
1521         }
1522
1523         wpa_printf(MSG_ERROR, "Unsupported driver '%s'.", name);
1524         return -1;
1525 }
1526
1527
1528 void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
1529                              const u8 *buf, size_t len)
1530 {
1531         struct wpa_supplicant *wpa_s = ctx;
1532
1533         wpa_printf(MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr));
1534         wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len);
1535
1536         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
1537                 wpa_printf(MSG_DEBUG, "Ignored received EAPOL frame since "
1538                            "no key management is configured");
1539                 return;
1540         }
1541
1542         if (wpa_s->eapol_received == 0 &&
1543             (!wpa_s->driver_4way_handshake ||
1544              !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
1545              wpa_s->wpa_state != WPA_COMPLETED)) {
1546                 /* Timeout for completing IEEE 802.1X and WPA authentication */
1547                 wpa_supplicant_req_auth_timeout(
1548                         wpa_s,
1549                         (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
1550                          wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA ||
1551                          wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ?
1552                         70 : 10, 0);
1553         }
1554         wpa_s->eapol_received++;
1555
1556         if (wpa_s->countermeasures) {
1557                 wpa_printf(MSG_INFO, "WPA: Countermeasures - dropped EAPOL "
1558                            "packet");
1559                 return;
1560         }
1561
1562 #ifdef CONFIG_IBSS_RSN
1563         if (wpa_s->current_ssid &&
1564             wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS) {
1565                 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len);
1566                 return;
1567         }
1568 #endif /* CONFIG_IBSS_RSN */
1569
1570         /* Source address of the incoming EAPOL frame could be compared to the
1571          * current BSSID. However, it is possible that a centralized
1572          * Authenticator could be using another MAC address than the BSSID of
1573          * an AP, so just allow any address to be used for now. The replies are
1574          * still sent to the current BSSID (if available), though. */
1575
1576         os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN);
1577         if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) &&
1578             eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0)
1579                 return;
1580         wpa_drv_poll(wpa_s);
1581         if (!wpa_s->driver_4way_handshake)
1582                 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len);
1583         else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1584                 /*
1585                  * Set portValid = TRUE here since we are going to skip 4-way
1586                  * handshake processing which would normally set portValid. We
1587                  * need this to allow the EAPOL state machines to be completed
1588                  * without going through EAPOL-Key handshake.
1589                  */
1590                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1591         }
1592 }
1593
1594
1595 void wpa_supplicant_sta_free_hw_features(struct wpa_hw_modes *hw_features,
1596                                          size_t num_hw_features)
1597 {
1598         ieee80211_sta_free_hw_features(hw_features, num_hw_features);
1599 }
1600
1601
1602 void wpa_supplicant_sta_rx(void *ctx, const u8 *buf, size_t len,
1603                            struct ieee80211_rx_status *rx_status)
1604 {
1605         struct wpa_supplicant *wpa_s = ctx;
1606         ieee80211_sta_rx(wpa_s, buf, len, rx_status);
1607 }
1608
1609
1610 /**
1611  * wpa_supplicant_driver_init - Initialize driver interface parameters
1612  * @wpa_s: Pointer to wpa_supplicant data
1613  * Returns: 0 on success, -1 on failure
1614  *
1615  * This function is called to initialize driver interface parameters.
1616  * wpa_drv_init() must have been called before this function to initialize the
1617  * driver interface.
1618  */
1619 int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s)
1620 {
1621         static int interface_count = 0;
1622
1623         if (wpa_s->driver->send_eapol) {
1624                 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
1625                 if (addr)
1626                         os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
1627         } else {
1628                 wpa_s->l2 = l2_packet_init(wpa_s->ifname,
1629                                            wpa_drv_get_mac_addr(wpa_s),
1630                                            ETH_P_EAPOL,
1631                                            wpa_supplicant_rx_eapol, wpa_s, 0);
1632                 if (wpa_s->l2 == NULL)
1633                         return -1;
1634         }
1635
1636         if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) {
1637                 wpa_printf(MSG_ERROR, "Failed to get own L2 address");
1638                 return -1;
1639         }
1640
1641         wpa_printf(MSG_DEBUG, "Own MAC address: " MACSTR,
1642                    MAC2STR(wpa_s->own_addr));
1643
1644         if (wpa_s->bridge_ifname[0]) {
1645                 wpa_printf(MSG_DEBUG, "Receiving packets from bridge interface"
1646                            " '%s'", wpa_s->bridge_ifname);
1647                 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname,
1648                                               wpa_s->own_addr,
1649                                               ETH_P_EAPOL,
1650                                               wpa_supplicant_rx_eapol, wpa_s,
1651                                               0);
1652                 if (wpa_s->l2_br == NULL) {
1653                         wpa_printf(MSG_ERROR, "Failed to open l2_packet "
1654                                    "connection for the bridge interface '%s'",
1655                                    wpa_s->bridge_ifname);
1656                         return -1;
1657                 }
1658         }
1659
1660         /* Backwards compatibility call to set_wpa() handler. This is called
1661          * only just after init and just before deinit, so these handler can be
1662          * used to implement same functionality. */
1663         if (wpa_drv_set_wpa(wpa_s, 1) < 0) {
1664                 struct wpa_driver_capa capa;
1665                 if (wpa_drv_get_capa(wpa_s, &capa) < 0 ||
1666                     !(capa.flags & (WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1667                                     WPA_DRIVER_CAPA_KEY_MGMT_WPA2))) {
1668                         wpa_printf(MSG_DEBUG, "Driver does not support WPA.");
1669                         /* Continue to allow non-WPA modes to be used. */
1670                 } else {
1671                         wpa_printf(MSG_ERROR, "Failed to enable WPA in the "
1672                                 "driver.");
1673                         return -1;
1674                 }
1675         }
1676
1677         wpa_clear_keys(wpa_s, NULL);
1678
1679         /* Make sure that TKIP countermeasures are not left enabled (could
1680          * happen if wpa_supplicant is killed during countermeasures. */
1681         wpa_drv_set_countermeasures(wpa_s, 0);
1682
1683         wpa_drv_set_drop_unencrypted(wpa_s, 1);
1684
1685         wpa_printf(MSG_DEBUG, "RSN: flushing PMKID list in the driver");
1686         wpa_drv_flush_pmkid(wpa_s);
1687
1688         wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
1689         wpa_supplicant_req_scan(wpa_s, interface_count, 100000);
1690         interface_count++;
1691
1692         return 0;
1693 }
1694
1695
1696 static int wpa_supplicant_daemon(const char *pid_file)
1697 {
1698         wpa_printf(MSG_DEBUG, "Daemonize..");
1699         return os_daemonize(pid_file);
1700 }
1701
1702
1703 static struct wpa_supplicant * wpa_supplicant_alloc(void)
1704 {
1705         struct wpa_supplicant *wpa_s;
1706
1707         wpa_s = os_zalloc(sizeof(*wpa_s));
1708         if (wpa_s == NULL)
1709                 return NULL;
1710         wpa_s->scan_req = 1;
1711
1712         return wpa_s;
1713 }
1714
1715
1716 static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
1717                                      struct wpa_interface *iface)
1718 {
1719         const char *ifname, *driver;
1720         struct wpa_driver_capa capa;
1721
1722         wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
1723                    "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname,
1724                    iface->confname ? iface->confname : "N/A",
1725                    iface->driver ? iface->driver : "default",
1726                    iface->ctrl_interface ? iface->ctrl_interface : "N/A",
1727                    iface->bridge_ifname ? iface->bridge_ifname : "N/A");
1728
1729         if (iface->confname) {
1730 #ifdef CONFIG_BACKEND_FILE
1731                 wpa_s->confname = os_rel2abs_path(iface->confname);
1732                 if (wpa_s->confname == NULL) {
1733                         wpa_printf(MSG_ERROR, "Failed to get absolute path "
1734                                    "for configuration file '%s'.",
1735                                    iface->confname);
1736                         return -1;
1737                 }
1738                 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'",
1739                            iface->confname, wpa_s->confname);
1740 #else /* CONFIG_BACKEND_FILE */
1741                 wpa_s->confname = os_strdup(iface->confname);
1742 #endif /* CONFIG_BACKEND_FILE */
1743                 wpa_s->conf = wpa_config_read(wpa_s->confname);
1744                 if (wpa_s->conf == NULL) {
1745                         wpa_printf(MSG_ERROR, "Failed to read or parse "
1746                                    "configuration '%s'.", wpa_s->confname);
1747                         return -1;
1748                 }
1749
1750                 /*
1751                  * Override ctrl_interface and driver_param if set on command
1752                  * line.
1753                  */
1754                 if (iface->ctrl_interface) {
1755                         os_free(wpa_s->conf->ctrl_interface);
1756                         wpa_s->conf->ctrl_interface =
1757                                 os_strdup(iface->ctrl_interface);
1758                 }
1759
1760                 if (iface->driver_param) {
1761                         os_free(wpa_s->conf->driver_param);
1762                         wpa_s->conf->driver_param =
1763                                 os_strdup(iface->driver_param);
1764                 }
1765         } else
1766                 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface,
1767                                                      iface->driver_param);
1768
1769         if (wpa_s->conf == NULL) {
1770                 wpa_printf(MSG_ERROR, "\nNo configuration found.");
1771                 return -1;
1772         }
1773
1774         if (iface->ifname == NULL) {
1775                 wpa_printf(MSG_ERROR, "\nInterface name is required.");
1776                 return -1;
1777         }
1778         if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) {
1779                 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.",
1780                            iface->ifname);
1781                 return -1;
1782         }
1783         os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname));
1784
1785         if (iface->bridge_ifname) {
1786                 if (os_strlen(iface->bridge_ifname) >=
1787                     sizeof(wpa_s->bridge_ifname)) {
1788                         wpa_printf(MSG_ERROR, "\nToo long bridge interface "
1789                                    "name '%s'.", iface->bridge_ifname);
1790                         return -1;
1791                 }
1792                 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname,
1793                            sizeof(wpa_s->bridge_ifname));
1794         }
1795
1796         /* RSNA Supplicant Key Management - INITIALIZE */
1797         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1798         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1799
1800         /* Initialize driver interface and register driver event handler before
1801          * L2 receive handler so that association events are processed before
1802          * EAPOL-Key packets if both become available for the same select()
1803          * call. */
1804         driver = iface->driver;
1805 next_driver:
1806         if (wpa_supplicant_set_driver(wpa_s, driver) < 0)
1807                 return -1;
1808
1809         wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
1810         if (wpa_s->drv_priv == NULL) {
1811                 const char *pos;
1812                 pos = os_strchr(driver, ',');
1813                 if (pos) {
1814                         wpa_printf(MSG_DEBUG, "Failed to initialize driver "
1815                                    "interface - try next driver wrapper");
1816                         driver = pos + 1;
1817                         goto next_driver;
1818                 }
1819                 wpa_printf(MSG_ERROR, "Failed to initialize driver interface");
1820                 return -1;
1821         }
1822         if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
1823                 wpa_printf(MSG_ERROR, "Driver interface rejected "
1824                            "driver_param '%s'", wpa_s->conf->driver_param);
1825                 return -1;
1826         }
1827
1828         ifname = wpa_drv_get_ifname(wpa_s);
1829         if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
1830                 wpa_printf(MSG_DEBUG, "Driver interface replaced interface "
1831                            "name with '%s'", ifname);
1832                 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
1833         }
1834
1835         if (wpa_supplicant_init_wpa(wpa_s) < 0)
1836                 return -1;
1837
1838         wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname,
1839                           wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname :
1840                           NULL);
1841         wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
1842
1843         if (wpa_s->conf->dot11RSNAConfigPMKLifetime &&
1844             wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
1845                              wpa_s->conf->dot11RSNAConfigPMKLifetime)) {
1846                 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
1847                            "dot11RSNAConfigPMKLifetime");
1848                 return -1;
1849         }
1850
1851         if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold &&
1852             wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
1853                              wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) {
1854                 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
1855                         "dot11RSNAConfigPMKReauthThreshold");
1856                 return -1;
1857         }
1858
1859         if (wpa_s->conf->dot11RSNAConfigSATimeout &&
1860             wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT,
1861                              wpa_s->conf->dot11RSNAConfigSATimeout)) {
1862                 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for "
1863                            "dot11RSNAConfigSATimeout");
1864                 return -1;
1865         }
1866
1867         if (wpa_supplicant_driver_init(wpa_s) < 0)
1868                 return -1;
1869
1870         if (wpa_s->conf->country[0] && wpa_s->conf->country[1] &&
1871             wpa_drv_set_country(wpa_s, wpa_s->conf->country)) {
1872                 wpa_printf(MSG_DEBUG, "Failed to set country");
1873                 return -1;
1874         }
1875
1876         wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
1877
1878         if (wpas_wps_init(wpa_s))
1879                 return -1;
1880
1881         if (wpa_supplicant_init_eapol(wpa_s) < 0)
1882                 return -1;
1883         wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
1884
1885         wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
1886         if (wpa_s->ctrl_iface == NULL) {
1887                 wpa_printf(MSG_ERROR,
1888                            "Failed to initialize control interface '%s'.\n"
1889                            "You may have another wpa_supplicant process "
1890                            "already running or the file was\n"
1891                            "left by an unclean termination of wpa_supplicant "
1892                            "in which case you will need\n"
1893                            "to manually remove this file before starting "
1894                            "wpa_supplicant again.\n",
1895                            wpa_s->conf->ctrl_interface);
1896                 return -1;
1897         }
1898
1899         if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
1900                 if (capa.flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
1901                         wpa_s->use_client_mlme = 1;
1902                         if (ieee80211_sta_init(wpa_s))
1903                                 return -1;
1904                 }
1905                 if (capa.flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE)
1906                         wpa_s->driver_4way_handshake = 1;
1907                 wpa_s->max_scan_ssids = capa.max_scan_ssids;
1908                 if (capa.flags & WPA_DRIVER_FLAGS_WIRED)
1909                         wpa_s->drv_wired = 1;
1910         }
1911
1912 #ifdef CONFIG_IBSS_RSN
1913         wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1914         if (!wpa_s->ibss_rsn) {
1915                 wpa_printf(MSG_DEBUG, "Failed to init IBSS RSN");
1916                 return -1;
1917         }
1918 #endif /* CONFIG_IBSS_RSN */
1919
1920         return 0;
1921 }
1922
1923
1924 static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s)
1925 {
1926         if (wpa_s->drv_priv) {
1927                 wpa_supplicant_deauthenticate(wpa_s,
1928                                               WLAN_REASON_DEAUTH_LEAVING);
1929
1930                 /* Backwards compatibility call to set_wpa() handler. This is
1931                  * called only just after init and just before deinit, so these
1932                  * handler can be used to implement same functionality. */
1933                 if (wpa_drv_set_wpa(wpa_s, 0) < 0) {
1934                         wpa_printf(MSG_ERROR, "Failed to disable WPA in the "
1935                                    "driver.");
1936                 }
1937
1938                 wpa_drv_set_drop_unencrypted(wpa_s, 0);
1939                 wpa_drv_set_countermeasures(wpa_s, 0);
1940                 wpa_clear_keys(wpa_s, NULL);
1941         }
1942
1943         wpas_dbus_unregister_iface(wpa_s);
1944
1945         wpa_supplicant_cleanup(wpa_s);
1946
1947         if (wpa_s->drv_priv)
1948                 wpa_drv_deinit(wpa_s);
1949 }
1950
1951
1952 /**
1953  * wpa_supplicant_add_iface - Add a new network interface
1954  * @global: Pointer to global data from wpa_supplicant_init()
1955  * @iface: Interface configuration options
1956  * Returns: Pointer to the created interface or %NULL on failure
1957  *
1958  * This function is used to add new network interfaces for %wpa_supplicant.
1959  * This can be called before wpa_supplicant_run() to add interfaces before the
1960  * main event loop has been started. In addition, new interfaces can be added
1961  * dynamically while %wpa_supplicant is already running. This could happen,
1962  * e.g., when a hotplug network adapter is inserted.
1963  */
1964 struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
1965                                                  struct wpa_interface *iface)
1966 {
1967         struct wpa_supplicant *wpa_s;
1968
1969         if (global == NULL || iface == NULL)
1970                 return NULL;
1971
1972         wpa_s = wpa_supplicant_alloc();
1973         if (wpa_s == NULL)
1974                 return NULL;
1975
1976         if (wpa_supplicant_init_iface(wpa_s, iface)) {
1977                 wpa_printf(MSG_DEBUG, "Failed to add interface %s",
1978                            iface->ifname);
1979                 wpa_supplicant_deinit_iface(wpa_s);
1980                 os_free(wpa_s);
1981                 return NULL;
1982         }
1983
1984         wpa_s->global = global;
1985
1986         /* Register the interface with the dbus control interface */
1987         if (wpas_dbus_register_iface(wpa_s)) {
1988                 wpa_supplicant_deinit_iface(wpa_s);
1989                 os_free(wpa_s);
1990                 return NULL;
1991         }
1992
1993         wpa_s->next = global->ifaces;
1994         global->ifaces = wpa_s;
1995
1996         wpa_printf(MSG_DEBUG, "Added interface %s", wpa_s->ifname);
1997
1998         return wpa_s;
1999 }
2000
2001
2002 /**
2003  * wpa_supplicant_remove_iface - Remove a network interface
2004  * @global: Pointer to global data from wpa_supplicant_init()
2005  * @wpa_s: Pointer to the network interface to be removed
2006  * Returns: 0 if interface was removed, -1 if interface was not found
2007  *
2008  * This function can be used to dynamically remove network interfaces from
2009  * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
2010  * addition, this function is used to remove all remaining interfaces when
2011  * %wpa_supplicant is terminated.
2012  */
2013 int wpa_supplicant_remove_iface(struct wpa_global *global,
2014                                 struct wpa_supplicant *wpa_s)
2015 {
2016         struct wpa_supplicant *prev;
2017
2018         /* Remove interface from the global list of interfaces */
2019         prev = global->ifaces;
2020         if (prev == wpa_s) {
2021                 global->ifaces = wpa_s->next;
2022         } else {
2023                 while (prev && prev->next != wpa_s)
2024                         prev = prev->next;
2025                 if (prev == NULL)
2026                         return -1;
2027                 prev->next = wpa_s->next;
2028         }
2029
2030         wpa_printf(MSG_DEBUG, "Removing interface %s", wpa_s->ifname);
2031
2032         wpa_supplicant_deinit_iface(wpa_s);
2033         os_free(wpa_s);
2034
2035         return 0;
2036 }
2037
2038
2039 /**
2040  * wpa_supplicant_get_iface - Get a new network interface
2041  * @global: Pointer to global data from wpa_supplicant_init()
2042  * @ifname: Interface name
2043  * Returns: Pointer to the interface or %NULL if not found
2044  */
2045 struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
2046                                                  const char *ifname)
2047 {
2048         struct wpa_supplicant *wpa_s;
2049
2050         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2051                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
2052                         return wpa_s;
2053         }
2054         return NULL;
2055 }
2056
2057
2058 /**
2059  * wpa_supplicant_init - Initialize %wpa_supplicant
2060  * @params: Parameters for %wpa_supplicant
2061  * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
2062  *
2063  * This function is used to initialize %wpa_supplicant. After successful
2064  * initialization, the returned data pointer can be used to add and remove
2065  * network interfaces, and eventually, to deinitialize %wpa_supplicant.
2066  */
2067 struct wpa_global * wpa_supplicant_init(struct wpa_params *params)
2068 {
2069         struct wpa_global *global;
2070         int ret, i;
2071
2072         if (params == NULL)
2073                 return NULL;
2074
2075         wpa_debug_open_file(params->wpa_debug_file_path);
2076         if (params->wpa_debug_syslog)
2077                 wpa_debug_open_syslog();
2078
2079         ret = eap_peer_register_methods();
2080         if (ret) {
2081                 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
2082                 if (ret == -2)
2083                         wpa_printf(MSG_ERROR, "Two or more EAP methods used "
2084                                    "the same EAP type.");
2085                 return NULL;
2086         }
2087
2088         global = os_zalloc(sizeof(*global));
2089         if (global == NULL)
2090                 return NULL;
2091         global->params.daemonize = params->daemonize;
2092         global->params.wait_for_monitor = params->wait_for_monitor;
2093         global->params.dbus_ctrl_interface = params->dbus_ctrl_interface;
2094         if (params->pid_file)
2095                 global->params.pid_file = os_strdup(params->pid_file);
2096         if (params->ctrl_interface)
2097                 global->params.ctrl_interface =
2098                         os_strdup(params->ctrl_interface);
2099         wpa_debug_level = global->params.wpa_debug_level =
2100                 params->wpa_debug_level;
2101         wpa_debug_show_keys = global->params.wpa_debug_show_keys =
2102                 params->wpa_debug_show_keys;
2103         wpa_debug_timestamp = global->params.wpa_debug_timestamp =
2104                 params->wpa_debug_timestamp;
2105
2106         if (eloop_init(global)) {
2107                 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
2108                 wpa_supplicant_deinit(global);
2109                 return NULL;
2110         }
2111
2112         global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global);
2113         if (global->ctrl_iface == NULL) {
2114                 wpa_supplicant_deinit(global);
2115                 return NULL;
2116         }
2117
2118         if (global->params.dbus_ctrl_interface) {
2119                 global->dbus_ctrl_iface =
2120                         wpa_supplicant_dbus_ctrl_iface_init(global);
2121                 if (global->dbus_ctrl_iface == NULL) {
2122                         wpa_supplicant_deinit(global);
2123                         return NULL;
2124                 }
2125         }
2126
2127         for (i = 0; wpa_supplicant_drivers[i]; i++)
2128                 global->drv_count++;
2129         if (global->drv_count == 0) {
2130                 wpa_printf(MSG_ERROR, "No drivers enabled");
2131                 wpa_supplicant_deinit(global);
2132                 return NULL;
2133         }
2134         global->drv_priv = os_zalloc(global->drv_count * sizeof(void *));
2135         if (global->drv_priv == NULL) {
2136                 wpa_supplicant_deinit(global);
2137                 return NULL;
2138         }
2139         for (i = 0; wpa_supplicant_drivers[i]; i++) {
2140                 if (!wpa_supplicant_drivers[i]->global_init)
2141                         continue;
2142                 global->drv_priv[i] = wpa_supplicant_drivers[i]->global_init();
2143                 if (global->drv_priv[i] == NULL) {
2144                         wpa_printf(MSG_ERROR, "Failed to initialize driver "
2145                                    "'%s'", wpa_supplicant_drivers[i]->name);
2146                         wpa_supplicant_deinit(global);
2147                         return NULL;
2148                 }
2149         }
2150
2151         return global;
2152 }
2153
2154
2155 /**
2156  * wpa_supplicant_run - Run the %wpa_supplicant main event loop
2157  * @global: Pointer to global data from wpa_supplicant_init()
2158  * Returns: 0 after successful event loop run, -1 on failure
2159  *
2160  * This function starts the main event loop and continues running as long as
2161  * there are any remaining events. In most cases, this function is running as
2162  * long as the %wpa_supplicant process in still in use.
2163  */
2164 int wpa_supplicant_run(struct wpa_global *global)
2165 {
2166         struct wpa_supplicant *wpa_s;
2167
2168         if (global->params.daemonize &&
2169             wpa_supplicant_daemon(global->params.pid_file))
2170                 return -1;
2171
2172         if (global->params.wait_for_monitor) {
2173                 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
2174                         if (wpa_s->ctrl_iface)
2175                                 wpa_supplicant_ctrl_iface_wait(
2176                                         wpa_s->ctrl_iface);
2177         }
2178
2179         eloop_register_signal_terminate(wpa_supplicant_terminate, NULL);
2180         eloop_register_signal_reconfig(wpa_supplicant_reconfig, NULL);
2181
2182         eloop_run();
2183
2184         return 0;
2185 }
2186
2187
2188 /**
2189  * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
2190  * @global: Pointer to global data from wpa_supplicant_init()
2191  *
2192  * This function is called to deinitialize %wpa_supplicant and to free all
2193  * allocated resources. Remaining network interfaces will also be removed.
2194  */
2195 void wpa_supplicant_deinit(struct wpa_global *global)
2196 {
2197         int i;
2198
2199         if (global == NULL)
2200                 return;
2201
2202         while (global->ifaces)
2203                 wpa_supplicant_remove_iface(global, global->ifaces);
2204
2205         if (global->ctrl_iface)
2206                 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface);
2207         if (global->dbus_ctrl_iface)
2208                 wpa_supplicant_dbus_ctrl_iface_deinit(global->dbus_ctrl_iface);
2209
2210         eap_peer_unregister_methods();
2211
2212         for (i = 0; wpa_supplicant_drivers[i] && global->drv_priv; i++) {
2213                 if (!global->drv_priv[i])
2214                         continue;
2215                 wpa_supplicant_drivers[i]->global_deinit(global->drv_priv[i]);
2216         }
2217         os_free(global->drv_priv);
2218
2219         eloop_destroy();
2220
2221         if (global->params.pid_file) {
2222                 os_daemonize_terminate(global->params.pid_file);
2223                 os_free(global->params.pid_file);
2224         }
2225         os_free(global->params.ctrl_interface);
2226
2227         os_free(global);
2228         wpa_debug_close_syslog();
2229         wpa_debug_close_file();
2230 }