wpa_supplicant/wpa_supplicant.c

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