contrib/hostapd-0.5.8/ieee802_11.c

   1 /*
   2  * hostapd / IEEE 802.11 Management
   3  * Copyright (c) 2002-2006, 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
  15 #include "includes.h"
  16
  17 #ifndef CONFIG_NATIVE_WINDOWS
  18
  19 #include <net/if.h>
  20
  21 #include "eloop.h"
  22 #include "hostapd.h"
  23 #include "ieee802_11.h"
  24 #include "beacon.h"
  25 #include "hw_features.h"
  26 #include "radius.h"
  27 #include "radius_client.h"
  28 #include "ieee802_11_auth.h"
  29 #include "sta_info.h"
  30 #include "eapol_sm.h"
  31 #include "rc4.h"
  32 #include "ieee802_1x.h"
  33 #include "wpa.h"
  34 #include "wme.h"
  35 #include "ap_list.h"
  36 #include "accounting.h"
  37 #include "driver.h"
  38 #include "ieee802_11h.h"
  39 #include "mlme.h"
  40
  41
  42 u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
  43 {
  44         u8 *pos = eid;
  45         int i, num, count;
  46
  47         if (hapd->iface->current_rates == NULL)
  48                 return eid;
  49
  50         *pos++ = WLAN_EID_SUPP_RATES;
  51         num = hapd->iface->num_rates;
  52         if (num > 8) {
  53                 /* rest of the rates are encoded in Extended supported
  54                  * rates element */
  55                 num = 8;
  56         }
  57
  58         *pos++ = num;
  59         count = 0;
  60         for (i = 0, count = 0; i < hapd->iface->num_rates && count < num;
  61              i++) {
  62                 count++;
  63                 *pos = hapd->iface->current_rates[i].rate / 5;
  64                 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
  65                         *pos |= 0x80;
  66                 pos++;
  67         }
  68
  69         return pos;
  70 }
  71
  72
  73 u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
  74 {
  75         u8 *pos = eid;
  76         int i, num, count;
  77
  78         if (hapd->iface->current_rates == NULL)
  79                 return eid;
  80
  81         num = hapd->iface->num_rates;
  82         if (num <= 8)
  83                 return eid;
  84         num -= 8;
  85
  86         *pos++ = WLAN_EID_EXT_SUPP_RATES;
  87         *pos++ = num;
  88         count = 0;
  89         for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
  90              i++) {
  91                 count++;
  92                 if (count <= 8)
  93                         continue; /* already in SuppRates IE */
  94                 *pos = hapd->iface->current_rates[i].rate / 5;
  95                 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
  96                         *pos |= 0x80;
  97                 pos++;
  98         }
  99
 100         return pos;
 101 }
 102
 103
 104 u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta,
 105                            int probe)
 106 {
 107         int capab = WLAN_CAPABILITY_ESS;
 108         int privacy;
 109
 110         if (hapd->iface->num_sta_no_short_preamble == 0 &&
 111             hapd->iconf->preamble == SHORT_PREAMBLE)
 112                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
 113
 114         privacy = hapd->conf->ssid.wep.keys_set;
 115
 116         if (hapd->conf->ieee802_1x &&
 117             (hapd->conf->default_wep_key_len ||
 118              hapd->conf->individual_wep_key_len))
 119                 privacy = 1;
 120
 121         if (hapd->conf->wpa)
 122                 privacy = 1;
 123
 124         if (sta) {
 125                 int policy, def_klen;
 126                 if (probe && sta->ssid_probe) {
 127                         policy = sta->ssid_probe->security_policy;
 128                         def_klen = sta->ssid_probe->wep.default_len;
 129                 } else {
 130                         policy = sta->ssid->security_policy;
 131                         def_klen = sta->ssid->wep.default_len;
 132                 }
 133                 privacy = policy != SECURITY_PLAINTEXT;
 134                 if (policy == SECURITY_IEEE_802_1X && def_klen == 0)
 135                         privacy = 0;
 136         }
 137
 138         if (privacy)
 139                 capab |= WLAN_CAPABILITY_PRIVACY;
 140
 141         if (hapd->iface && hapd->iface->current_mode &&
 142             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
 143             hapd->iface->num_sta_no_short_slot_time == 0)
 144                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
 145
 146         if (hapd->iface->dfs_enable)
 147                 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
 148
 149         return capab;
 150 }
 151
 152
 153 #define OUI_MICROSOFT 0x0050f2 /* Microsoft (also used in Wi-Fi specs)
 154                                 * 00:50:F2 */
 155
 156 static int ieee802_11_parse_vendor_specific(struct hostapd_data *hapd,
 157                                             u8 *pos, size_t elen,
 158                                             struct ieee802_11_elems *elems,
 159                                             int show_errors)
 160 {
 161         unsigned int oui;
 162
 163         /* first 3 bytes in vendor specific information element are the IEEE
 164          * OUI of the vendor. The following byte is used a vendor specific
 165          * sub-type. */
 166         if (elen < 4) {
 167                 if (show_errors) {
 168                         HOSTAPD_DEBUG(HOSTAPD_DEBUG_MSGDUMPS, "short vendor "
 169                                       "specific information element ignored "
 170                                       "(len=%lu)\n", (unsigned long) elen);
 171                 }
 172                 return -1;
 173         }
 174
 175         oui = (pos[0] << 16) | (pos[1] << 8) | pos[2];
 176         switch (oui) {
 177         case OUI_MICROSOFT:
 178                 /* Microsoft/Wi-Fi information elements are further typed and
 179                  * subtyped */
 180                 switch (pos[3]) {
 181                 case 1:
 182                         /* Microsoft OUI (00:50:F2) with OUI Type 1:
 183                          * real WPA information element */
 184                         elems->wpa_ie = pos;
 185                         elems->wpa_ie_len = elen;
 186                         break;
 187                 case WME_OUI_TYPE: /* this is a Wi-Fi WME info. element */
 188                         if (elen < 5) {
 189                                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MSGDUMPS,
 190                                               "short WME information element "
 191                                               "ignored (len=%lu)\n",
 192                                               (unsigned long) elen);
 193                                 return -1;
 194                         }
 195                         switch (pos[4]) {
 196                         case WME_OUI_SUBTYPE_INFORMATION_ELEMENT:
 197                         case WME_OUI_SUBTYPE_PARAMETER_ELEMENT:
 198                                 elems->wme = pos;
 199                                 elems->wme_len = elen;
 200                                 break;
 201                         case WME_OUI_SUBTYPE_TSPEC_ELEMENT:
 202                                 elems->wme_tspec = pos;
 203                                 elems->wme_tspec_len = elen;
 204                                 break;
 205                         default:
 206                                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MSGDUMPS,
 207                                               "unknown WME information element"
 208                                               " ignored (subtype=%d "
 209                                               "len=%lu)\n",
 210                                               pos[4], (unsigned long) elen);
 211                                 return -1;
 212                         }
 213                         break;
 214                 default:
 215                         HOSTAPD_DEBUG(HOSTAPD_DEBUG_MSGDUMPS,
 216                                       "Unknown Microsoft information element "
 217                                       "ignored (type=%d len=%lu)\n",
 218                                       pos[3], (unsigned long) elen);
 219                         return -1;
 220                 }
 221                 break;
 222
 223         default:
 224                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MSGDUMPS,
 225                               "unknown vendor specific information element "
 226                               "ignored (vendor OUI %02x:%02x:%02x len=%lu)\n",
 227                               pos[0], pos[1], pos[2], (unsigned long) elen);
 228                 return -1;
 229         }
 230
 231         return 0;
 232 }
 233
 234
 235 ParseRes ieee802_11_parse_elems(struct hostapd_data *hapd, u8 *start,
 236                                 size_t len,
 237                                 struct ieee802_11_elems *elems,
 238                                 int show_errors)
 239 {
 240         size_t left = len;
 241         u8 *pos = start;
 242         int unknown = 0;
 243
 244         memset(elems, 0, sizeof(*elems));
 245
 246         while (left >= 2) {
 247                 u8 id, elen;
 248
 249                 id = *pos++;
 250                 elen = *pos++;
 251                 left -= 2;
 252
 253                 if (elen > left) {
 254                         if (show_errors) {
 255                                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
 256                                               "IEEE 802.11 element parse "
 257                                               "failed (id=%d elen=%d "
 258                                               "left=%lu)\n",
 259                                               id, elen, (unsigned long) left);
 260                                 wpa_hexdump(MSG_MSGDUMP, "IEs", start, len);
 261                         }
 262                         return ParseFailed;
 263                 }
 264
 265                 switch (id) {
 266                 case WLAN_EID_SSID:
 267                         elems->ssid = pos;
 268                         elems->ssid_len = elen;
 269                         break;
 270                 case WLAN_EID_SUPP_RATES:
 271                         elems->supp_rates = pos;
 272                         elems->supp_rates_len = elen;
 273                         break;
 274                 case WLAN_EID_FH_PARAMS:
 275                         elems->fh_params = pos;
 276                         elems->fh_params_len = elen;
 277                         break;
 278                 case WLAN_EID_DS_PARAMS:
 279                         elems->ds_params = pos;
 280                         elems->ds_params_len = elen;
 281                         break;
 282                 case WLAN_EID_CF_PARAMS:
 283                         elems->cf_params = pos;
 284                         elems->cf_params_len = elen;
 285                         break;
 286                 case WLAN_EID_TIM:
 287                         elems->tim = pos;
 288                         elems->tim_len = elen;
 289                         break;
 290                 case WLAN_EID_IBSS_PARAMS:
 291                         elems->ibss_params = pos;
 292                         elems->ibss_params_len = elen;
 293                         break;
 294                 case WLAN_EID_CHALLENGE:
 295                         elems->challenge = pos;
 296                         elems->challenge_len = elen;
 297                         break;
 298                 case WLAN_EID_ERP_INFO:
 299                         elems->erp_info = pos;
 300                         elems->erp_info_len = elen;
 301                         break;
 302                 case WLAN_EID_EXT_SUPP_RATES:
 303                         elems->ext_supp_rates = pos;
 304                         elems->ext_supp_rates_len = elen;
 305                         break;
 306                 case WLAN_EID_VENDOR_SPECIFIC:
 307                         if (ieee802_11_parse_vendor_specific(hapd, pos, elen,
 308                                                              elems,
 309                                                              show_errors))
 310                                 unknown++;
 311                         break;
 312                 case WLAN_EID_RSN:
 313                         elems->rsn_ie = pos;
 314                         elems->rsn_ie_len = elen;
 315                         break;
 316                 case WLAN_EID_PWR_CAPABILITY:
 317                         elems->power_cap = pos;
 318                         elems->power_cap_len = elen;
 319                         break;
 320                 case WLAN_EID_SUPPORTED_CHANNELS:
 321                         elems->supp_channels = pos;
 322                         elems->supp_channels_len = elen;
 323                         break;
 324                 default:
 325                         unknown++;
 326                         if (!show_errors)
 327                                 break;
 328                         HOSTAPD_DEBUG(HOSTAPD_DEBUG_EXCESSIVE,
 329                                       "IEEE 802.11 element parse ignored "
 330                                       "unknown element (id=%d elen=%d)\n",
 331                                       id, elen);
 332                         break;
 333                 }
 334
 335                 left -= elen;
 336                 pos += elen;
 337         }
 338
 339         if (left)
 340                 return ParseFailed;
 341
 342         return unknown ? ParseUnknown : ParseOK;
 343 }
 344
 345
 346 void ieee802_11_print_ssid(const u8 *ssid, u8 len)
 347 {
 348         int i;
 349         for (i = 0; i < len; i++) {
 350                 if (ssid[i] >= 32 && ssid[i] < 127)
 351                         printf("%c", ssid[i]);
 352                 else
 353                         printf("<%02x>", ssid[i]);
 354         }
 355 }
 356
 357
 358 void ieee802_11_send_deauth(struct hostapd_data *hapd, u8 *addr, u16 reason)
 359 {
 360         struct ieee80211_mgmt mgmt;
 361         char buf[30];
 362
 363         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
 364                        HOSTAPD_LEVEL_DEBUG,
 365                        "deauthenticate - reason %d", reason);
 366         snprintf(buf, sizeof(buf), "SEND-DEAUTHENTICATE %d", reason);
 367         memset(&mgmt, 0, sizeof(mgmt));
 368         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 369                                           WLAN_FC_STYPE_DEAUTH);
 370         memcpy(mgmt.da, addr, ETH_ALEN);
 371         memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
 372         memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
 373         mgmt.u.deauth.reason_code = host_to_le16(reason);
 374         if (hostapd_send_mgmt_frame(hapd, &mgmt, IEEE80211_HDRLEN +
 375                                     sizeof(mgmt.u.deauth), 0) < 0)
 376                 perror("ieee802_11_send_deauth: send");
 377 }
 378
 379
 380 static void ieee802_11_sta_authenticate(void *eloop_ctx, void *timeout_ctx)
 381 {
 382         struct hostapd_data *hapd = eloop_ctx;
 383         struct ieee80211_mgmt mgmt;
 384
 385         if (hapd->assoc_ap_state == WAIT_BEACON)
 386                 hapd->assoc_ap_state = AUTHENTICATE;
 387         if (hapd->assoc_ap_state != AUTHENTICATE)
 388                 return;
 389
 390         printf("Authenticate with AP " MACSTR " SSID=",
 391                MAC2STR(hapd->conf->assoc_ap_addr));
 392         ieee802_11_print_ssid((u8 *) hapd->assoc_ap_ssid,
 393                               hapd->assoc_ap_ssid_len);
 394         printf(" (as station)\n");
 395
 396         memset(&mgmt, 0, sizeof(mgmt));
 397         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 398                                           WLAN_FC_STYPE_AUTH);
 399         /* Request TX callback */
 400         mgmt.frame_control |= host_to_le16(BIT(1));
 401         memcpy(mgmt.da, hapd->conf->assoc_ap_addr, ETH_ALEN);
 402         memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
 403         memcpy(mgmt.bssid, hapd->conf->assoc_ap_addr, ETH_ALEN);
 404         mgmt.u.auth.auth_alg = host_to_le16(WLAN_AUTH_OPEN);
 405         mgmt.u.auth.auth_transaction = host_to_le16(1);
 406         mgmt.u.auth.status_code = host_to_le16(0);
 407         if (hostapd_send_mgmt_frame(hapd, &mgmt, IEEE80211_HDRLEN +
 408                                     sizeof(mgmt.u.auth), 0) < 0)
 409                 perror("ieee802_11_sta_authenticate: send");
 410
 411         /* Try to authenticate again, if this attempt fails or times out. */
 412         eloop_register_timeout(5, 0, ieee802_11_sta_authenticate, hapd, NULL);
 413 }
 414
 415
 416 static void ieee802_11_sta_associate(void *eloop_ctx, void *timeout_ctx)
 417 {
 418         struct hostapd_data *hapd = eloop_ctx;
 419         u8 buf[256];
 420         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
 421         u8 *p;
 422
 423         if (hapd->assoc_ap_state == AUTHENTICATE)
 424                 hapd->assoc_ap_state = ASSOCIATE;
 425         if (hapd->assoc_ap_state != ASSOCIATE)
 426                 return;
 427
 428         printf("Associate with AP " MACSTR " SSID=",
 429                MAC2STR(hapd->conf->assoc_ap_addr));
 430         ieee802_11_print_ssid((u8 *) hapd->assoc_ap_ssid,
 431                               hapd->assoc_ap_ssid_len);
 432         printf(" (as station)\n");
 433
 434         memset(mgmt, 0, sizeof(*mgmt));
 435         mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 436                                           WLAN_FC_STYPE_ASSOC_REQ);
 437         /* Request TX callback */
 438         mgmt->frame_control |= host_to_le16(BIT(1));
 439         memcpy(mgmt->da, hapd->conf->assoc_ap_addr, ETH_ALEN);
 440         memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
 441         memcpy(mgmt->bssid, hapd->conf->assoc_ap_addr, ETH_ALEN);
 442         mgmt->u.assoc_req.capab_info = host_to_le16(0);
 443         mgmt->u.assoc_req.listen_interval = host_to_le16(1);
 444         p = &mgmt->u.assoc_req.variable[0];
 445
 446         *p++ = WLAN_EID_SSID;
 447         *p++ = hapd->assoc_ap_ssid_len;
 448         memcpy(p, hapd->assoc_ap_ssid, hapd->assoc_ap_ssid_len);
 449         p += hapd->assoc_ap_ssid_len;
 450
 451         p = hostapd_eid_supp_rates(hapd, p);
 452         p = hostapd_eid_ext_supp_rates(hapd, p);
 453
 454         if (hostapd_send_mgmt_frame(hapd, mgmt, p - (u8 *) mgmt, 0) < 0)
 455                 perror("ieee802_11_sta_associate: send");
 456
 457         /* Try to authenticate again, if this attempt fails or times out. */
 458         eloop_register_timeout(5, 0, ieee802_11_sta_associate, hapd, NULL);
 459 }
 460
 461
 462 static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
 463                            u16 auth_transaction, u8 *challenge, int iswep)
 464 {
 465         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 466                        HOSTAPD_LEVEL_DEBUG,
 467                        "authentication (shared key, transaction %d)",
 468                        auth_transaction);
 469
 470         if (auth_transaction == 1) {
 471                 if (!sta->challenge) {
 472                         /* Generate a pseudo-random challenge */
 473                         u8 key[8];
 474                         time_t now;
 475                         int r;
 476                         sta->challenge = wpa_zalloc(WLAN_AUTH_CHALLENGE_LEN);
 477                         if (sta->challenge == NULL)
 478                                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 479
 480                         now = time(NULL);
 481                         r = random();
 482                         memcpy(key, &now, 4);
 483                         memcpy(key + 4, &r, 4);
 484                         rc4(sta->challenge, WLAN_AUTH_CHALLENGE_LEN,
 485                             key, sizeof(key));
 486                 }
 487                 return 0;
 488         }
 489
 490         if (auth_transaction != 3)
 491                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 492
 493         /* Transaction 3 */
 494         if (!iswep || !sta->challenge || !challenge ||
 495             memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) {
 496                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 497                                HOSTAPD_LEVEL_INFO,
 498                                "shared key authentication - invalid "
 499                                "challenge-response");
 500                 return WLAN_STATUS_CHALLENGE_FAIL;
 501         }
 502
 503         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 504                        HOSTAPD_LEVEL_DEBUG,
 505                        "authentication OK (shared key)");
 506 #ifdef IEEE80211_REQUIRE_AUTH_ACK
 507         /* Station will be marked authenticated if it ACKs the
 508          * authentication reply. */
 509 #else
 510         sta->flags |= WLAN_STA_AUTH;
 511         wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
 512 #endif
 513         free(sta->challenge);
 514         sta->challenge = NULL;
 515
 516         return 0;
 517 }
 518
 519
 520 static void send_auth_reply(struct hostapd_data *hapd,
 521                             struct ieee80211_mgmt *mgmt,
 522                             u16 auth_alg, u16 auth_transaction, u16 resp,
 523                             u8 *challenge)
 524 {
 525         u8 buf[IEEE80211_HDRLEN + sizeof(mgmt->u.auth) + 2 +
 526                WLAN_AUTH_CHALLENGE_LEN];
 527         struct ieee80211_mgmt *reply;
 528         size_t rlen;
 529
 530         memset(buf, 0, sizeof(buf));
 531         reply = (struct ieee80211_mgmt *) buf;
 532         reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 533                                            WLAN_FC_STYPE_AUTH);
 534         /* Request TX callback */
 535         reply->frame_control |= host_to_le16(BIT(1));
 536         memcpy(reply->da, mgmt->sa, ETH_ALEN);
 537         memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
 538         memcpy(reply->bssid, mgmt->bssid, ETH_ALEN);
 539
 540         reply->u.auth.auth_alg = host_to_le16(auth_alg);
 541         reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
 542         reply->u.auth.status_code = host_to_le16(resp);
 543         rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth);
 544         if (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 2 &&
 545             challenge) {
 546                 u8 *p = reply->u.auth.variable;
 547                 *p++ = WLAN_EID_CHALLENGE;
 548                 *p++ = WLAN_AUTH_CHALLENGE_LEN;
 549                 memcpy(p, challenge, WLAN_AUTH_CHALLENGE_LEN);
 550                 rlen += 2 + WLAN_AUTH_CHALLENGE_LEN;
 551         } else
 552                 challenge = NULL;
 553
 554         HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
 555                       "authentication reply: STA=" MACSTR " auth_alg=%d "
 556                       "auth_transaction=%d resp=%d%s\n",
 557                       MAC2STR(mgmt->sa), auth_alg, auth_transaction,
 558                       resp, challenge ? " challenge" : "");
 559         if (hostapd_send_mgmt_frame(hapd, reply, rlen, 0) < 0)
 560                 perror("send_auth_reply: send");
 561 }
 562
 563
 564 static void handle_auth(struct hostapd_data *hapd, struct ieee80211_mgmt *mgmt,
 565                         size_t len)
 566 {
 567         u16 auth_alg, auth_transaction, status_code;
 568         u16 resp = WLAN_STATUS_SUCCESS;
 569         struct sta_info *sta = NULL;
 570         int res;
 571         u16 fc;
 572         u8 *challenge = NULL;
 573         u32 session_timeout, acct_interim_interval;
 574         int vlan_id = 0;
 575
 576         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
 577                 printf("handle_auth - too short payload (len=%lu)\n",
 578                        (unsigned long) len);
 579                 return;
 580         }
 581
 582         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
 583         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
 584         status_code = le_to_host16(mgmt->u.auth.status_code);
 585         fc = le_to_host16(mgmt->frame_control);
 586
 587         if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
 588             2 + WLAN_AUTH_CHALLENGE_LEN &&
 589             mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
 590             mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
 591                 challenge = &mgmt->u.auth.variable[2];
 592
 593         HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
 594                       "authentication: STA=" MACSTR " auth_alg=%d "
 595                       "auth_transaction=%d status_code=%d wep=%d%s\n",
 596                       MAC2STR(mgmt->sa), auth_alg, auth_transaction,
 597                       status_code, !!(fc & WLAN_FC_ISWEP),
 598                       challenge ? " challenge" : "");
 599
 600         if (hapd->assoc_ap_state == AUTHENTICATE && auth_transaction == 2 &&
 601             memcmp(mgmt->sa, hapd->conf->assoc_ap_addr, ETH_ALEN) == 0 &&
 602             memcmp(mgmt->bssid, hapd->conf->assoc_ap_addr, ETH_ALEN) == 0) {
 603                 if (status_code != 0) {
 604                         printf("Authentication (as station) with AP "
 605                                MACSTR " failed (status_code=%d)\n",
 606                                MAC2STR(hapd->conf->assoc_ap_addr),
 607                                status_code);
 608                         return;
 609                 }
 610                 printf("Authenticated (as station) with AP " MACSTR "\n",
 611                        MAC2STR(hapd->conf->assoc_ap_addr));
 612                 ieee802_11_sta_associate(hapd, NULL);
 613                 return;
 614         }
 615
 616         if (hapd->tkip_countermeasures) {
 617                 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
 618                 goto fail;
 619         }
 620
 621         if (!(((hapd->conf->auth_algs & HOSTAPD_AUTH_OPEN) &&
 622                auth_alg == WLAN_AUTH_OPEN) ||
 623               ((hapd->conf->auth_algs & HOSTAPD_AUTH_SHARED_KEY) &&
 624                auth_alg == WLAN_AUTH_SHARED_KEY))) {
 625                 printf("Unsupported authentication algorithm (%d)\n",
 626                        auth_alg);
 627                 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
 628                 goto fail;
 629         }
 630
 631         if (!(auth_transaction == 1 ||
 632               (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
 633                 printf("Unknown authentication transaction number (%d)\n",
 634                        auth_transaction);
 635                 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
 636                 goto fail;
 637         }
 638
 639         if (memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
 640                 printf("Station " MACSTR " not allowed to authenticate.\n",
 641                        MAC2STR(mgmt->sa));
 642                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 643                 goto fail;
 644         }
 645
 646         res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
 647                                       &session_timeout,
 648                                       &acct_interim_interval, &vlan_id);
 649         if (res == HOSTAPD_ACL_REJECT) {
 650                 printf("Station " MACSTR " not allowed to authenticate.\n",
 651                        MAC2STR(mgmt->sa));
 652                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 653                 goto fail;
 654         }
 655         if (res == HOSTAPD_ACL_PENDING) {
 656                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "Authentication frame "
 657                               "from " MACSTR " waiting for an external "
 658                               "authentication\n", MAC2STR(mgmt->sa));
 659                 /* Authentication code will re-send the authentication frame
 660                  * after it has received (and cached) information from the
 661                  * external source. */
 662                 return;
 663         }
 664
 665         sta = ap_sta_add(hapd, mgmt->sa);
 666         if (!sta) {
 667                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 668                 goto fail;
 669         }
 670
 671         if (vlan_id > 0) {
 672                 if (hostapd_get_vlan_id_ifname(hapd->conf->vlan,
 673                                                sta->vlan_id) == NULL) {
 674                         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
 675                                        HOSTAPD_LEVEL_INFO, "Invalid VLAN ID "
 676                                        "%d received from RADIUS server",
 677                                        vlan_id);
 678                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 679                         goto fail;
 680                 }
 681                 sta->vlan_id = vlan_id;
 682                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
 683                                HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
 684         }
 685
 686         sta->flags &= ~WLAN_STA_PREAUTH;
 687         ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
 688
 689         if (hapd->conf->radius->acct_interim_interval == 0 &&
 690             acct_interim_interval)
 691                 sta->acct_interim_interval = acct_interim_interval;
 692         if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
 693                 ap_sta_session_timeout(hapd, sta, session_timeout);
 694         else
 695                 ap_sta_no_session_timeout(hapd, sta);
 696
 697         switch (auth_alg) {
 698         case WLAN_AUTH_OPEN:
 699                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 700                                HOSTAPD_LEVEL_DEBUG,
 701                                "authentication OK (open system)");
 702 #ifdef IEEE80211_REQUIRE_AUTH_ACK
 703                 /* Station will be marked authenticated if it ACKs the
 704                  * authentication reply. */
 705 #else
 706                 sta->flags |= WLAN_STA_AUTH;
 707                 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
 708                 sta->auth_alg = WLAN_AUTH_OPEN;
 709                 mlme_authenticate_indication(hapd, sta);
 710 #endif
 711                 break;
 712         case WLAN_AUTH_SHARED_KEY:
 713                 resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
 714                                        fc & WLAN_FC_ISWEP);
 715                 sta->auth_alg = WLAN_AUTH_SHARED_KEY;
 716                 mlme_authenticate_indication(hapd, sta);
 717                 break;
 718         }
 719
 720  fail:
 721         send_auth_reply(hapd, mgmt, auth_alg, auth_transaction + 1, resp,
 722                         sta ? sta->challenge : NULL);
 723 }
 724
 725
 726 static void handle_assoc(struct hostapd_data *hapd,
 727                          struct ieee80211_mgmt *mgmt, size_t len, int reassoc)
 728 {
 729         u16 capab_info, listen_interval;
 730         u16 resp = WLAN_STATUS_SUCCESS;
 731         u8 *pos, *wpa_ie;
 732         size_t wpa_ie_len;
 733         int send_deauth = 0, send_len, left, i;
 734         struct sta_info *sta;
 735         struct ieee802_11_elems elems;
 736
 737         if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
 738                                       sizeof(mgmt->u.assoc_req))) {
 739                 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
 740                        "\n", reassoc, (unsigned long) len);
 741                 return;
 742         }
 743
 744         if (reassoc) {
 745                 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
 746                 listen_interval = le_to_host16(
 747                         mgmt->u.reassoc_req.listen_interval);
 748                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
 749                               "reassociation request: STA=" MACSTR
 750                               " capab_info=0x%02x "
 751                               "listen_interval=%d current_ap=" MACSTR "\n",
 752                               MAC2STR(mgmt->sa), capab_info, listen_interval,
 753                               MAC2STR(mgmt->u.reassoc_req.current_ap));
 754                 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
 755                 pos = mgmt->u.reassoc_req.variable;
 756         } else {
 757                 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
 758                 listen_interval = le_to_host16(
 759                         mgmt->u.assoc_req.listen_interval);
 760                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
 761                               "association request: STA=" MACSTR
 762                               " capab_info=0x%02x listen_interval=%d\n",
 763                               MAC2STR(mgmt->sa), capab_info, listen_interval);
 764                 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
 765                 pos = mgmt->u.assoc_req.variable;
 766         }
 767
 768         sta = ap_get_sta(hapd, mgmt->sa);
 769         if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
 770                 printf("STA " MACSTR " trying to associate before "
 771                        "authentication\n", MAC2STR(mgmt->sa));
 772                 if (sta) {
 773                         printf("  sta: addr=" MACSTR " aid=%d flags=0x%04x\n",
 774                                MAC2STR(sta->addr), sta->aid, sta->flags);
 775                 }
 776                 send_deauth = 1;
 777                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 778                 goto fail;
 779         }
 780
 781         if (hapd->tkip_countermeasures) {
 782                 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
 783                 goto fail;
 784         }
 785
 786         if (reassoc) {
 787                 memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
 788                        ETH_ALEN);
 789         }
 790
 791         sta->capability = capab_info;
 792
 793         /* followed by SSID and Supported rates */
 794         if (ieee802_11_parse_elems(hapd, pos, left, &elems, 1) == ParseFailed
 795             || !elems.ssid) {
 796                 printf("STA " MACSTR " sent invalid association request\n",
 797                        MAC2STR(sta->addr));
 798                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 799                 goto fail;
 800         }
 801
 802         if (elems.ssid_len != hapd->conf->ssid.ssid_len ||
 803             memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) != 0) {
 804                 printf("Station " MACSTR " tried to associate with "
 805                        "unknown SSID '", MAC2STR(sta->addr));
 806                 ieee802_11_print_ssid(elems.ssid, elems.ssid_len);
 807                 printf("'\n");
 808                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 809                 goto fail;
 810         }
 811
 812         sta->flags &= ~WLAN_STA_WME;
 813         if (elems.wme && hapd->conf->wme_enabled) {
 814                 if (hostapd_eid_wme_valid(hapd, elems.wme, elems.wme_len))
 815                         hostapd_logger(hapd, sta->addr,
 816                                        HOSTAPD_MODULE_WPA,
 817                                        HOSTAPD_LEVEL_DEBUG,
 818                                        "invalid WME element in association "
 819                                        "request");
 820                 else
 821                         sta->flags |= WLAN_STA_WME;
 822         }
 823
 824         if (!elems.supp_rates) {
 825                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
 826                                HOSTAPD_LEVEL_DEBUG,
 827                                "No supported rates element in AssocReq");
 828                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 829                 goto fail;
 830         }
 831
 832         if (elems.supp_rates_len > sizeof(sta->supported_rates)) {
 833                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
 834                                HOSTAPD_LEVEL_DEBUG,
 835                                "Invalid supported rates element length %d",
 836                                elems.supp_rates_len);
 837                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 838                 goto fail;
 839         }
 840
 841         memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
 842         memcpy(sta->supported_rates, elems.supp_rates, elems.supp_rates_len);
 843         sta->supported_rates_len = elems.supp_rates_len;
 844
 845         if (elems.ext_supp_rates) {
 846                 if (elems.supp_rates_len + elems.ext_supp_rates_len >
 847                     sizeof(sta->supported_rates)) {
 848                         hostapd_logger(hapd, mgmt->sa,
 849                                        HOSTAPD_MODULE_IEEE80211,
 850                                        HOSTAPD_LEVEL_DEBUG,
 851                                        "Invalid supported rates element length"
 852                                        " %d+%d", elems.supp_rates_len,
 853                                        elems.ext_supp_rates_len);
 854                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 855                         goto fail;
 856                 }
 857
 858                 memcpy(sta->supported_rates + elems.supp_rates_len,
 859                        elems.ext_supp_rates, elems.ext_supp_rates_len);
 860                 sta->supported_rates_len += elems.ext_supp_rates_len;
 861         }
 862
 863         if ((hapd->conf->wpa & HOSTAPD_WPA_VERSION_WPA2) && elems.rsn_ie) {
 864                 wpa_ie = elems.rsn_ie;
 865                 wpa_ie_len = elems.rsn_ie_len;
 866         } else if ((hapd->conf->wpa & HOSTAPD_WPA_VERSION_WPA) &&
 867                    elems.wpa_ie) {
 868                 wpa_ie = elems.wpa_ie;
 869                 wpa_ie_len = elems.wpa_ie_len;
 870         } else {
 871                 wpa_ie = NULL;
 872                 wpa_ie_len = 0;
 873         }
 874         if (hapd->conf->wpa && wpa_ie == NULL) {
 875                 printf("STA " MACSTR ": No WPA/RSN IE in association "
 876                        "request\n", MAC2STR(sta->addr));
 877                 resp = WLAN_STATUS_INVALID_IE;
 878                 goto fail;
 879         }
 880
 881         if (hapd->conf->wpa) {
 882                 int res;
 883                 wpa_ie -= 2;
 884                 wpa_ie_len += 2;
 885                 if (sta->wpa_sm == NULL)
 886                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
 887                                                         sta->addr);
 888                 if (sta->wpa_sm == NULL) {
 889                         printf("Failed to initialize WPA state machine\n");
 890                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 891                         goto fail;
 892                 }
 893                 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
 894                                           wpa_ie, wpa_ie_len);
 895                 if (res == WPA_INVALID_GROUP)
 896                         resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
 897                 else if (res == WPA_INVALID_PAIRWISE)
 898                         resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
 899                 else if (res == WPA_INVALID_AKMP)
 900                         resp = WLAN_STATUS_AKMP_NOT_VALID;
 901                 else if (res == WPA_ALLOC_FAIL)
 902                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 903 #ifdef CONFIG_IEEE80211W
 904                 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
 905                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE; /* FIX */
 906                 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
 907                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE; /* FIX */
 908 #endif /* CONFIG_IEEE80211W */
 909                 else if (res != WPA_IE_OK)
 910                         resp = WLAN_STATUS_INVALID_IE;
 911                 if (resp != WLAN_STATUS_SUCCESS)
 912                         goto fail;
 913         }
 914
 915         if (hapd->iface->dfs_enable &&
 916             hapd->iconf->ieee80211h == SPECT_STRICT_BINDING) {
 917                 if (hostapd_check_power_cap(hapd, elems.power_cap,
 918                                             elems.power_cap_len)) {
 919                         resp = WLAN_STATUS_PWR_CAPABILITY_NOT_VALID;
 920                         hostapd_logger(hapd, sta->addr,
 921                                        HOSTAPD_MODULE_IEEE80211,
 922                                        HOSTAPD_LEVEL_DEBUG,
 923                                        "Power capabilities of the station not "
 924                                        "acceptable");
 925                         goto fail;
 926                 }
 927         }
 928
 929         if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
 930                 sta->flags |= WLAN_STA_NONERP;
 931         for (i = 0; i < sta->supported_rates_len; i++) {
 932                 if ((sta->supported_rates[i] & 0x7f) > 22) {
 933                         sta->flags &= ~WLAN_STA_NONERP;
 934                         break;
 935                 }
 936         }
 937         if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
 938                 sta->nonerp_set = 1;
 939                 hapd->iface->num_sta_non_erp++;
 940                 if (hapd->iface->num_sta_non_erp == 1)
 941                         ieee802_11_set_beacons(hapd->iface);
 942         }
 943
 944         if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
 945             !sta->no_short_slot_time_set) {
 946                 sta->no_short_slot_time_set = 1;
 947                 hapd->iface->num_sta_no_short_slot_time++;
 948                 if (hapd->iface->current_mode->mode ==
 949                     HOSTAPD_MODE_IEEE80211G &&
 950                     hapd->iface->num_sta_no_short_slot_time == 1)
 951                         ieee802_11_set_beacons(hapd->iface);
 952         }
 953
 954         if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
 955                 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 956         else
 957                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 958
 959         if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
 960             !sta->no_short_preamble_set) {
 961                 sta->no_short_preamble_set = 1;
 962                 hapd->iface->num_sta_no_short_preamble++;
 963                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 964                     && hapd->iface->num_sta_no_short_preamble == 1)
 965                         ieee802_11_set_beacons(hapd->iface);
 966         }
 967
 968         /* get a unique AID */
 969         if (sta->aid > 0) {
 970                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
 971                               "  old AID %d\n", sta->aid);
 972         } else {
 973                 for (sta->aid = 1; sta->aid <= MAX_AID_TABLE_SIZE; sta->aid++)
 974                         if (hapd->sta_aid[sta->aid - 1] == NULL)
 975                                 break;
 976                 if (sta->aid > MAX_AID_TABLE_SIZE) {
 977                         sta->aid = 0;
 978                         resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
 979                         printf("  no room for more AIDs\n");
 980                         goto fail;
 981                 } else {
 982                         hapd->sta_aid[sta->aid - 1] = sta;
 983                         HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
 984                                       "  new AID %d\n", sta->aid);
 985                 }
 986         }
 987
 988         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 989                        HOSTAPD_LEVEL_DEBUG,
 990                        "association OK (aid %d)", sta->aid);
 991         /* Station will be marked associated, after it acknowledges AssocResp
 992          */
 993
 994         if (sta->last_assoc_req)
 995                 free(sta->last_assoc_req);
 996         sta->last_assoc_req = (struct ieee80211_mgmt *) malloc(len);
 997         if (sta->last_assoc_req)
 998                 memcpy(sta->last_assoc_req, mgmt, len);
 999
1000         /* Make sure that the previously registered inactivity timer will not
1001          * remove the STA immediately. */
1002         sta->timeout_next = STA_NULLFUNC;
1003
1004  fail:
1005
1006         /* use the queued buffer for transmission because it is large enough
1007          * and not needed anymore */
1008         mgmt->frame_control =
1009                 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1010                              (send_deauth ? WLAN_FC_STYPE_DEAUTH :
1011                               (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
1012                                WLAN_FC_STYPE_ASSOC_RESP)));
1013         memcpy(mgmt->da, mgmt->sa, ETH_ALEN);
1014         memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
1015         /* Addr3 = BSSID - already set */
1016
1017         send_len = IEEE80211_HDRLEN;
1018         if (send_deauth) {
1019                 send_len += sizeof(mgmt->u.deauth);
1020                 mgmt->u.deauth.reason_code = host_to_le16(resp);
1021         } else {
1022                 u8 *p;
1023                 send_len += sizeof(mgmt->u.assoc_resp);
1024                 mgmt->u.assoc_resp.capab_info =
1025                         host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
1026                 mgmt->u.assoc_resp.status_code = host_to_le16(resp);
1027                 mgmt->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
1028                                                       | BIT(14) | BIT(15));
1029                 /* Supported rates */
1030                 p = hostapd_eid_supp_rates(hapd, mgmt->u.assoc_resp.variable);
1031                 /* Extended supported rates */
1032                 p = hostapd_eid_ext_supp_rates(hapd, p);
1033                 if (sta->flags & WLAN_STA_WME)
1034                         p = hostapd_eid_wme(hapd, p);
1035                 send_len += p - mgmt->u.assoc_resp.variable;
1036
1037                 /* Request TX callback */
1038                 mgmt->frame_control |= host_to_le16(BIT(1));
1039         }
1040
1041         if (hostapd_send_mgmt_frame(hapd, mgmt, send_len, 0) < 0)
1042                 perror("handle_assoc: send");
1043 }
1044
1045
1046 static void handle_assoc_resp(struct hostapd_data *hapd,
1047                               struct ieee80211_mgmt *mgmt, size_t len)
1048 {
1049         u16 status_code, aid;
1050
1051         if (hapd->assoc_ap_state != ASSOCIATE) {
1052                 printf("Unexpected association response received from " MACSTR
1053                        "\n", MAC2STR(mgmt->sa));
1054                 return;
1055         }
1056
1057         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_resp)) {
1058                 printf("handle_assoc_resp - too short payload (len=%lu)\n",
1059                        (unsigned long) len);
1060                 return;
1061         }
1062
1063         if (memcmp(mgmt->sa, hapd->conf->assoc_ap_addr, ETH_ALEN) != 0 ||
1064             memcmp(mgmt->bssid, hapd->conf->assoc_ap_addr, ETH_ALEN) != 0) {
1065                 printf("Received association response from unexpected address "
1066                        "(SA=" MACSTR " BSSID=" MACSTR "\n",
1067                        MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
1068                 return;
1069         }
1070
1071         status_code = le_to_host16(mgmt->u.assoc_resp.status_code);
1072         aid = le_to_host16(mgmt->u.assoc_resp.aid);
1073         aid &= ~(BIT(14) | BIT(15));
1074
1075         if (status_code != 0) {
1076                 printf("Association (as station) with AP " MACSTR " failed "
1077                        "(status_code=%d)\n",
1078                        MAC2STR(hapd->conf->assoc_ap_addr), status_code);
1079                 /* Try to authenticate again */
1080                 hapd->assoc_ap_state = AUTHENTICATE;
1081                 eloop_register_timeout(5, 0, ieee802_11_sta_authenticate,
1082                                        hapd, NULL);
1083         }
1084
1085         printf("Associated (as station) with AP " MACSTR " (aid=%d)\n",
1086                MAC2STR(hapd->conf->assoc_ap_addr), aid);
1087         hapd->assoc_ap_aid = aid;
1088         hapd->assoc_ap_state = ASSOCIATED;
1089
1090         if (hostapd_set_assoc_ap(hapd, hapd->conf->assoc_ap_addr)) {
1091                 printf("Could not set associated AP address to kernel "
1092                        "driver.\n");
1093         }
1094 }
1095
1096
1097 static void handle_disassoc(struct hostapd_data *hapd,
1098                             struct ieee80211_mgmt *mgmt, size_t len)
1099 {
1100         struct sta_info *sta;
1101
1102         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
1103                 printf("handle_disassoc - too short payload (len=%lu)\n",
1104                        (unsigned long) len);
1105                 return;
1106         }
1107
1108         HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
1109                       "disassocation: STA=" MACSTR " reason_code=%d\n",
1110                       MAC2STR(mgmt->sa),
1111                       le_to_host16(mgmt->u.disassoc.reason_code));
1112
1113         if (hapd->assoc_ap_state != DO_NOT_ASSOC &&
1114             memcmp(mgmt->sa, hapd->conf->assoc_ap_addr, ETH_ALEN) == 0) {
1115                 printf("Assoc AP " MACSTR " sent disassociation "
1116                        "(reason_code=%d) - try to authenticate\n",
1117                        MAC2STR(hapd->conf->assoc_ap_addr),
1118                        le_to_host16(mgmt->u.disassoc.reason_code));
1119                 hapd->assoc_ap_state = AUTHENTICATE;
1120                 ieee802_11_sta_authenticate(hapd, NULL);
1121                 eloop_register_timeout(0, 500000, ieee802_11_sta_authenticate,
1122                                        hapd, NULL);
1123                 return;
1124         }
1125
1126         sta = ap_get_sta(hapd, mgmt->sa);
1127         if (sta == NULL) {
1128                 printf("Station " MACSTR " trying to disassociate, but it "
1129                        "is not associated.\n", MAC2STR(mgmt->sa));
1130                 return;
1131         }
1132
1133         sta->flags &= ~WLAN_STA_ASSOC;
1134         wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
1135         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1136                        HOSTAPD_LEVEL_INFO, "disassociated");
1137         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1138         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1139         /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
1140          * authenticated. */
1141         accounting_sta_stop(hapd, sta);
1142         ieee802_1x_free_station(sta);
1143         hostapd_sta_remove(hapd, sta->addr);
1144
1145         if (sta->timeout_next == STA_NULLFUNC ||
1146             sta->timeout_next == STA_DISASSOC) {
1147                 sta->timeout_next = STA_DEAUTH;
1148                 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1149                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
1150                                        hapd, sta);
1151         }
1152
1153         mlme_disassociate_indication(
1154                 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
1155 }
1156
1157
1158 static void handle_deauth(struct hostapd_data *hapd,
1159                           struct ieee80211_mgmt *mgmt, size_t len)
1160 {
1161         struct sta_info *sta;
1162
1163         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
1164                 printf("handle_deauth - too short payload (len=%lu)\n",
1165                        (unsigned long) len);
1166                 return;
1167         }
1168
1169         HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
1170                       "deauthentication: STA=" MACSTR " reason_code=%d\n",
1171                       MAC2STR(mgmt->sa),
1172                       le_to_host16(mgmt->u.deauth.reason_code));
1173
1174         if (hapd->assoc_ap_state != DO_NOT_ASSOC &&
1175             memcmp(mgmt->sa, hapd->conf->assoc_ap_addr, ETH_ALEN) == 0) {
1176                 printf("Assoc AP " MACSTR " sent deauthentication "
1177                        "(reason_code=%d) - try to authenticate\n",
1178                        MAC2STR(hapd->conf->assoc_ap_addr),
1179                        le_to_host16(mgmt->u.deauth.reason_code));
1180                 hapd->assoc_ap_state = AUTHENTICATE;
1181                 eloop_register_timeout(0, 500000, ieee802_11_sta_authenticate,
1182                                        hapd, NULL);
1183                 return;
1184         }
1185
1186         sta = ap_get_sta(hapd, mgmt->sa);
1187         if (sta == NULL) {
1188                 printf("Station " MACSTR " trying to deauthenticate, but it "
1189                        "is not authenticated.\n", MAC2STR(mgmt->sa));
1190                 return;
1191         }
1192
1193         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
1194         wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1195         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1196                        HOSTAPD_LEVEL_DEBUG, "deauthenticated");
1197         mlme_deauthenticate_indication(
1198                 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
1199         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1200         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1201         ap_free_sta(hapd, sta);
1202 }
1203
1204
1205 static void handle_beacon(struct hostapd_data *hapd,
1206                           struct ieee80211_mgmt *mgmt, size_t len,
1207                           struct hostapd_frame_info *fi)
1208 {
1209         struct ieee802_11_elems elems;
1210
1211         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
1212                 printf("handle_beacon - too short payload (len=%lu)\n",
1213                        (unsigned long) len);
1214                 return;
1215         }
1216
1217         (void) ieee802_11_parse_elems(hapd, mgmt->u.beacon.variable,
1218                                       len - (IEEE80211_HDRLEN +
1219                                              sizeof(mgmt->u.beacon)), &elems,
1220                                       0);
1221
1222         if (hapd->assoc_ap_state == WAIT_BEACON &&
1223             memcmp(mgmt->sa, hapd->conf->assoc_ap_addr, ETH_ALEN) == 0) {
1224                 if (elems.ssid && elems.ssid_len <= 32) {
1225                         memcpy(hapd->assoc_ap_ssid, elems.ssid,
1226                                elems.ssid_len);
1227                         hapd->assoc_ap_ssid[elems.ssid_len] = '\0';
1228                         hapd->assoc_ap_ssid_len = elems.ssid_len;
1229                 }
1230                 ieee802_11_sta_authenticate(hapd, NULL);
1231         }
1232
1233         ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
1234
1235         if (!HOSTAPD_DEBUG_COND(HOSTAPD_DEBUG_EXCESSIVE))
1236                 return;
1237
1238         printf("Beacon from " MACSTR, MAC2STR(mgmt->sa));
1239         if (elems.ssid) {
1240                 printf(" SSID='");
1241                 ieee802_11_print_ssid(elems.ssid, elems.ssid_len);
1242                 printf("'");
1243         }
1244         if (elems.ds_params && elems.ds_params_len == 1)
1245                 printf(" CHAN=%d", elems.ds_params[0]);
1246         printf("\n");
1247 }
1248
1249
1250 static void handle_action(struct hostapd_data *hapd,
1251                           struct ieee80211_mgmt *mgmt, size_t len)
1252 {
1253         if (len < IEEE80211_HDRLEN + 1) {
1254                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1255                                HOSTAPD_LEVEL_DEBUG,
1256                                "handle_action - too short payload (len=%lu)",
1257                                (unsigned long) len);
1258                 return;
1259         }
1260
1261         switch (mgmt->u.action.category) {
1262         case WME_ACTION_CATEGORY:
1263                 hostapd_wme_action(hapd, mgmt, len);
1264                 return;
1265         }
1266
1267         hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1268                        HOSTAPD_LEVEL_DEBUG,
1269                        "handle_action - unknown action category %d",
1270                        mgmt->u.action.category);
1271         if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
1272             !(mgmt->sa[0] & 0x01)) {
1273                 /*
1274                  * IEEE 802.11-REVma/D9.0 - 7.3.1.11
1275                  * Return the Action frame to the source without change
1276                  * except that MSB of the Category set to 1.
1277                  */
1278                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
1279                            "frame back to sender");
1280                 os_memcpy(mgmt->da, mgmt->sa, ETH_ALEN);
1281                 os_memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
1282                 os_memcpy(mgmt->bssid, hapd->own_addr, ETH_ALEN);
1283                 mgmt->u.action.category |= 0x80;
1284
1285                 hostapd_send_mgmt_frame(hapd, mgmt, len, 0);
1286         }
1287 }
1288
1289
1290 /**
1291  * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
1292  * @hapd: hostapd BSS data structure (the BSS to which the management frame was
1293  * sent to)
1294  * @buf: management frame data (starting from IEEE 802.11 header)
1295  * @len: length of frame data in octets
1296  * @stype: management frame subtype from frame control field
1297  *
1298  * Process all incoming IEEE 802.11 management frames. This will be called for
1299  * each frame received from the kernel driver through wlan#ap interface. In
1300  * addition, it can be called to re-inserted pending frames (e.g., when using
1301  * external RADIUS server as an MAC ACL).
1302  */
1303 void ieee802_11_mgmt(struct hostapd_data *hapd, u8 *buf, size_t len, u16 stype,
1304                      struct hostapd_frame_info *fi)
1305 {
1306         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
1307         int broadcast;
1308
1309         if (stype == WLAN_FC_STYPE_BEACON) {
1310                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_EXCESSIVE, "mgmt::beacon\n");
1311                 handle_beacon(hapd, mgmt, len, fi);
1312                 return;
1313         }
1314
1315         if (fi && fi->passive_scan)
1316                 return;
1317
1318         broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
1319                 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
1320                 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
1321
1322         if (!broadcast && memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0 &&
1323             (hapd->assoc_ap_state == DO_NOT_ASSOC ||
1324              memcmp(mgmt->bssid, hapd->conf->assoc_ap_addr, ETH_ALEN) != 0)) {
1325                 printf("MGMT: BSSID=" MACSTR " not our address\n",
1326                        MAC2STR(mgmt->bssid));
1327                 return;
1328         }
1329
1330
1331         if (stype == WLAN_FC_STYPE_PROBE_REQ) {
1332                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MSGDUMPS, "mgmt::probe_req\n");
1333                 handle_probe_req(hapd, mgmt, len);
1334                 return;
1335         }
1336
1337         if (memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
1338                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1339                                HOSTAPD_LEVEL_DEBUG,
1340                                "MGMT: DA=" MACSTR " not our address",
1341                                MAC2STR(mgmt->da));
1342                 return;
1343         }
1344
1345         switch (stype) {
1346         case WLAN_FC_STYPE_AUTH:
1347                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "mgmt::auth\n");
1348                 handle_auth(hapd, mgmt, len);
1349                 break;
1350         case WLAN_FC_STYPE_ASSOC_REQ:
1351                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "mgmt::assoc_req\n");
1352                 handle_assoc(hapd, mgmt, len, 0);
1353                 break;
1354         case WLAN_FC_STYPE_ASSOC_RESP:
1355                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "mgmt::assoc_resp\n");
1356                 handle_assoc_resp(hapd, mgmt, len);
1357                 break;
1358         case WLAN_FC_STYPE_REASSOC_REQ:
1359                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "mgmt::reassoc_req\n");
1360                 handle_assoc(hapd, mgmt, len, 1);
1361                 break;
1362         case WLAN_FC_STYPE_DISASSOC:
1363                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "mgmt::disassoc\n");
1364                 handle_disassoc(hapd, mgmt, len);
1365                 break;
1366         case WLAN_FC_STYPE_DEAUTH:
1367                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "mgmt::deauth\n");
1368                 handle_deauth(hapd, mgmt, len);
1369                 break;
1370         case WLAN_FC_STYPE_ACTION:
1371                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "mgmt::action\n");
1372                 handle_action(hapd, mgmt, len);
1373                 break;
1374         default:
1375                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1376                                HOSTAPD_LEVEL_DEBUG,
1377                                "unknown mgmt frame subtype %d", stype);
1378                 break;
1379         }
1380 }
1381
1382
1383 static void handle_auth_cb(struct hostapd_data *hapd,
1384                            struct ieee80211_mgmt *mgmt,
1385                            size_t len, int ok)
1386 {
1387         u16 auth_alg, auth_transaction, status_code;
1388         struct sta_info *sta;
1389
1390         if (!ok) {
1391                 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1392                                HOSTAPD_LEVEL_NOTICE,
1393                                "did not acknowledge authentication response");
1394                 return;
1395         }
1396
1397         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
1398                 printf("handle_auth_cb - too short payload (len=%lu)\n",
1399                        (unsigned long) len);
1400                 return;
1401         }
1402
1403         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1404         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1405         status_code = le_to_host16(mgmt->u.auth.status_code);
1406
1407         sta = ap_get_sta(hapd, mgmt->da);
1408         if (!sta) {
1409                 printf("handle_auth_cb: STA " MACSTR " not found\n",
1410                        MAC2STR(mgmt->da));
1411                 return;
1412         }
1413
1414         if (status_code == WLAN_STATUS_SUCCESS &&
1415             ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
1416              (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
1417                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1418                                HOSTAPD_LEVEL_INFO, "authenticated");
1419                 sta->flags |= WLAN_STA_AUTH;
1420         }
1421 }
1422
1423
1424 static void handle_assoc_cb(struct hostapd_data *hapd,
1425                             struct ieee80211_mgmt *mgmt,
1426                             size_t len, int reassoc, int ok)
1427 {
1428         u16 status;
1429         struct sta_info *sta;
1430         int new_assoc = 1;
1431
1432         if (!ok) {
1433                 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1434                                HOSTAPD_LEVEL_DEBUG,
1435                                "did not acknowledge association response");
1436                 return;
1437         }
1438
1439         if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
1440                                       sizeof(mgmt->u.assoc_req))) {
1441                 printf("handle_assoc_cb(reassoc=%d) - too short payload "
1442                        "(len=%lu)\n", reassoc, (unsigned long) len);
1443                 return;
1444         }
1445
1446         if (reassoc)
1447                 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
1448         else
1449                 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1450
1451         sta = ap_get_sta(hapd, mgmt->da);
1452         if (!sta) {
1453                 printf("handle_assoc_cb: STA " MACSTR " not found\n",
1454                        MAC2STR(mgmt->da));
1455                 return;
1456         }
1457
1458         if (status != WLAN_STATUS_SUCCESS)
1459                 goto fail;
1460
1461         /* Stop previous accounting session, if one is started, and allocate
1462          * new session id for the new session. */
1463         accounting_sta_stop(hapd, sta);
1464         accounting_sta_get_id(hapd, sta);
1465
1466         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1467                        HOSTAPD_LEVEL_INFO,
1468                        "associated (aid %d, accounting session %08X-%08X)",
1469                        sta->aid, sta->acct_session_id_hi,
1470                        sta->acct_session_id_lo);
1471
1472         if (sta->flags & WLAN_STA_ASSOC)
1473                 new_assoc = 0;
1474         sta->flags |= WLAN_STA_ASSOC;
1475
1476         if (reassoc)
1477                 mlme_reassociate_indication(hapd, sta);
1478         else
1479                 mlme_associate_indication(hapd, sta);
1480
1481         if (hostapd_sta_add(hapd->conf->iface, hapd, sta->addr, sta->aid,
1482                             sta->capability, sta->supported_rates,
1483                             sta->supported_rates_len, 0)) {
1484                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1485                                HOSTAPD_LEVEL_NOTICE,
1486                                "Could not add STA to kernel driver");
1487         }
1488
1489         if (sta->eapol_sm == NULL) {
1490                 /*
1491                  * This STA does not use RADIUS server for EAP authentication,
1492                  * so bind it to the selected VLAN interface now, since the
1493                  * interface selection is not going to change anymore.
1494                  */
1495                 ap_sta_bind_vlan(hapd, sta, 0);
1496         } else if (sta->vlan_id) {
1497                 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
1498                 ap_sta_bind_vlan(hapd, sta, 0);
1499         }
1500         if (sta->flags & WLAN_STA_SHORT_PREAMBLE) {
1501                 hostapd_sta_set_flags(hapd, sta->addr,
1502                                       WLAN_STA_SHORT_PREAMBLE, ~0);
1503         } else {
1504                 hostapd_sta_set_flags(hapd, sta->addr,
1505                                       0, ~WLAN_STA_SHORT_PREAMBLE);
1506         }
1507
1508         wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
1509         hostapd_new_assoc_sta(hapd, sta, !new_assoc);
1510
1511         ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
1512
1513  fail:
1514         /* Copy of the association request is not needed anymore */
1515         if (sta->last_assoc_req) {
1516                 free(sta->last_assoc_req);
1517                 sta->last_assoc_req = NULL;
1518         }
1519 }
1520
1521
1522 void ieee802_11_mgmt_cb(struct hostapd_data *hapd, u8 *buf, size_t len,
1523                         u16 stype, int ok)
1524 {
1525         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
1526
1527         switch (stype) {
1528         case WLAN_FC_STYPE_AUTH:
1529                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "mgmt::auth cb\n");
1530                 handle_auth_cb(hapd, mgmt, len, ok);
1531                 break;
1532         case WLAN_FC_STYPE_ASSOC_RESP:
1533                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
1534                               "mgmt::assoc_resp cb\n");
1535                 handle_assoc_cb(hapd, mgmt, len, 0, ok);
1536                 break;
1537         case WLAN_FC_STYPE_REASSOC_RESP:
1538                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
1539                               "mgmt::reassoc_resp cb\n");
1540                 handle_assoc_cb(hapd, mgmt, len, 1, ok);
1541                 break;
1542         case WLAN_FC_STYPE_PROBE_RESP:
1543                 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "mgmt::proberesp cb\n");
1544                 break;
1545         default:
1546                 printf("unknown mgmt cb frame subtype %d\n", stype);
1547                 break;
1548         }
1549 }
1550
1551
1552 static void ieee80211_tkip_countermeasures_stop(void *eloop_ctx,
1553                                                 void *timeout_ctx)
1554 {
1555         struct hostapd_data *hapd = eloop_ctx;
1556         hapd->tkip_countermeasures = 0;
1557         hostapd_set_countermeasures(hapd, 0);
1558         hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1559                        HOSTAPD_LEVEL_INFO, "TKIP countermeasures ended");
1560 }
1561
1562
1563 static void ieee80211_tkip_countermeasures_start(struct hostapd_data *hapd)
1564 {
1565         struct sta_info *sta;
1566
1567         hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1568                        HOSTAPD_LEVEL_INFO, "TKIP countermeasures initiated");
1569
1570         wpa_auth_countermeasures_start(hapd->wpa_auth);
1571         hapd->tkip_countermeasures = 1;
1572         hostapd_set_countermeasures(hapd, 1);
1573         wpa_gtk_rekey(hapd->wpa_auth);
1574         eloop_cancel_timeout(ieee80211_tkip_countermeasures_stop, hapd, NULL);
1575         eloop_register_timeout(60, 0, ieee80211_tkip_countermeasures_stop,
1576                                hapd, NULL);
1577         for (sta = hapd->sta_list; sta != NULL; sta = sta->next) {
1578                 hostapd_sta_deauth(hapd, sta->addr,
1579                                    WLAN_REASON_MICHAEL_MIC_FAILURE);
1580                 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
1581                                 WLAN_STA_AUTHORIZED);
1582                 hostapd_sta_remove(hapd, sta->addr);
1583         }
1584 }
1585
1586
1587 void ieee80211_michael_mic_failure(struct hostapd_data *hapd, const u8 *addr,
1588                                    int local)
1589 {
1590         time_t now;
1591
1592         if (addr && local) {
1593                 struct sta_info *sta = ap_get_sta(hapd, addr);
1594                 if (sta != NULL) {
1595                         wpa_auth_sta_local_mic_failure_report(sta->wpa_sm);
1596                         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
1597                                        HOSTAPD_LEVEL_INFO,
1598                                        "Michael MIC failure detected in "
1599                                        "received frame");
1600                         mlme_michaelmicfailure_indication(hapd, addr);
1601                 } else {
1602                         HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
1603                                       "MLME-MICHAELMICFAILURE.indication "
1604                                       "for not associated STA (" MACSTR
1605                                       ") ignored\n", MAC2STR(addr));
1606                         return;
1607                 }
1608         }
1609
1610         time(&now);
1611         if (now > hapd->michael_mic_failure + 60) {
1612                 hapd->michael_mic_failures = 1;
1613         } else {
1614                 hapd->michael_mic_failures++;
1615                 if (hapd->michael_mic_failures > 1)
1616                         ieee80211_tkip_countermeasures_start(hapd);
1617         }
1618         hapd->michael_mic_failure = now;
1619 }
1620
1621
1622 int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
1623 {
1624         /* TODO */
1625         return 0;
1626 }
1627
1628
1629 int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
1630                            char *buf, size_t buflen)
1631 {
1632         /* TODO */
1633         return 0;
1634 }
1635
1636 #endif /* CONFIG_NATIVE_WINDOWS */