src/ap/ieee802_11.c

   1 /*
   2  * hostapd / IEEE 802.11 Management
   3  * Copyright (c) 2002-2012, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10
  11 #ifndef CONFIG_NATIVE_WINDOWS
  12
  13 #include "utils/common.h"
  14 #include "utils/eloop.h"
  15 #include "crypto/crypto.h"
  16 #include "crypto/sha256.h"
  17 #include "crypto/random.h"
  18 #include "drivers/driver.h"
  19 #include "common/ieee802_11_defs.h"
  20 #include "common/ieee802_11_common.h"
  21 #include "common/wpa_ctrl.h"
  22 #include "common/sae.h"
  23 #include "radius/radius.h"
  24 #include "radius/radius_client.h"
  25 #include "p2p/p2p.h"
  26 #include "wps/wps.h"
  27 #include "hostapd.h"
  28 #include "beacon.h"
  29 #include "ieee802_11_auth.h"
  30 #include "sta_info.h"
  31 #include "ieee802_1x.h"
  32 #include "wpa_auth.h"
  33 #include "wmm.h"
  34 #include "ap_list.h"
  35 #include "accounting.h"
  36 #include "ap_config.h"
  37 #include "ap_mlme.h"
  38 #include "p2p_hostapd.h"
  39 #include "ap_drv_ops.h"
  40 #include "wnm_ap.h"
  41 #include "ieee802_11.h"
  42
  43
  44 u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
  45 {
  46         u8 *pos = eid;
  47         int i, num, count;
  48
  49         if (hapd->iface->current_rates == NULL)
  50                 return eid;
  51
  52         *pos++ = WLAN_EID_SUPP_RATES;
  53         num = hapd->iface->num_rates;
  54         if (hapd->iconf->ieee80211n && hapd->iconf->require_ht)
  55                 num++;
  56         if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht)
  57                 num++;
  58         if (num > 8) {
  59                 /* rest of the rates are encoded in Extended supported
  60                  * rates element */
  61                 num = 8;
  62         }
  63
  64         *pos++ = num;
  65         count = 0;
  66         for (i = 0, count = 0; i < hapd->iface->num_rates && count < num;
  67              i++) {
  68                 count++;
  69                 *pos = hapd->iface->current_rates[i].rate / 5;
  70                 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
  71                         *pos |= 0x80;
  72                 pos++;
  73         }
  74
  75         if (hapd->iconf->ieee80211n && hapd->iconf->require_ht && count < 8) {
  76                 count++;
  77                 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY;
  78         }
  79
  80         if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht && count < 8) {
  81                 count++;
  82                 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY;
  83         }
  84
  85         return pos;
  86 }
  87
  88
  89 u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
  90 {
  91         u8 *pos = eid;
  92         int i, num, count;
  93
  94         if (hapd->iface->current_rates == NULL)
  95                 return eid;
  96
  97         num = hapd->iface->num_rates;
  98         if (hapd->iconf->ieee80211n && hapd->iconf->require_ht)
  99                 num++;
 100         if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht)
 101                 num++;
 102         if (num <= 8)
 103                 return eid;
 104         num -= 8;
 105
 106         *pos++ = WLAN_EID_EXT_SUPP_RATES;
 107         *pos++ = num;
 108         count = 0;
 109         for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
 110              i++) {
 111                 count++;
 112                 if (count <= 8)
 113                         continue; /* already in SuppRates IE */
 114                 *pos = hapd->iface->current_rates[i].rate / 5;
 115                 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
 116                         *pos |= 0x80;
 117                 pos++;
 118         }
 119
 120         if (hapd->iconf->ieee80211n && hapd->iconf->require_ht) {
 121                 count++;
 122                 if (count > 8)
 123                         *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY;
 124         }
 125
 126         if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht) {
 127                 count++;
 128                 if (count > 8)
 129                         *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY;
 130         }
 131
 132         return pos;
 133 }
 134
 135
 136 u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta,
 137                            int probe)
 138 {
 139         int capab = WLAN_CAPABILITY_ESS;
 140         int privacy;
 141
 142         if (hapd->iface->num_sta_no_short_preamble == 0 &&
 143             hapd->iconf->preamble == SHORT_PREAMBLE)
 144                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
 145
 146         privacy = hapd->conf->ssid.wep.keys_set;
 147
 148         if (hapd->conf->ieee802_1x &&
 149             (hapd->conf->default_wep_key_len ||
 150              hapd->conf->individual_wep_key_len))
 151                 privacy = 1;
 152
 153         if (hapd->conf->wpa)
 154                 privacy = 1;
 155
 156         if (sta) {
 157                 int policy, def_klen;
 158                 if (probe && sta->ssid_probe) {
 159                         policy = sta->ssid_probe->security_policy;
 160                         def_klen = sta->ssid_probe->wep.default_len;
 161                 } else {
 162                         policy = sta->ssid->security_policy;
 163                         def_klen = sta->ssid->wep.default_len;
 164                 }
 165                 privacy = policy != SECURITY_PLAINTEXT;
 166                 if (policy == SECURITY_IEEE_802_1X && def_klen == 0)
 167                         privacy = 0;
 168         }
 169
 170         if (privacy)
 171                 capab |= WLAN_CAPABILITY_PRIVACY;
 172
 173         if (hapd->iface->current_mode &&
 174             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
 175             hapd->iface->num_sta_no_short_slot_time == 0)
 176                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
 177
 178         return capab;
 179 }
 180
 181
 182 void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len)
 183 {
 184         int i;
 185         if (len > HOSTAPD_MAX_SSID_LEN)
 186                 len = HOSTAPD_MAX_SSID_LEN;
 187         for (i = 0; i < len; i++) {
 188                 if (ssid[i] >= 32 && ssid[i] < 127)
 189                         buf[i] = ssid[i];
 190                 else
 191                         buf[i] = '.';
 192         }
 193         buf[len] = '\0';
 194 }
 195
 196
 197 static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
 198                            u16 auth_transaction, const u8 *challenge,
 199                            int iswep)
 200 {
 201         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 202                        HOSTAPD_LEVEL_DEBUG,
 203                        "authentication (shared key, transaction %d)",
 204                        auth_transaction);
 205
 206         if (auth_transaction == 1) {
 207                 if (!sta->challenge) {
 208                         /* Generate a pseudo-random challenge */
 209                         u8 key[8];
 210                         struct os_time now;
 211                         int r;
 212                         sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
 213                         if (sta->challenge == NULL)
 214                                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 215
 216                         os_get_time(&now);
 217                         r = os_random();
 218                         os_memcpy(key, &now.sec, 4);
 219                         os_memcpy(key + 4, &r, 4);
 220                         rc4_skip(key, sizeof(key), 0,
 221                                  sta->challenge, WLAN_AUTH_CHALLENGE_LEN);
 222                 }
 223                 return 0;
 224         }
 225
 226         if (auth_transaction != 3)
 227                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 228
 229         /* Transaction 3 */
 230         if (!iswep || !sta->challenge || !challenge ||
 231             os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) {
 232                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 233                                HOSTAPD_LEVEL_INFO,
 234                                "shared key authentication - invalid "
 235                                "challenge-response");
 236                 return WLAN_STATUS_CHALLENGE_FAIL;
 237         }
 238
 239         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 240                        HOSTAPD_LEVEL_DEBUG,
 241                        "authentication OK (shared key)");
 242 #ifdef IEEE80211_REQUIRE_AUTH_ACK
 243         /* Station will be marked authenticated if it ACKs the
 244          * authentication reply. */
 245 #else
 246         sta->flags |= WLAN_STA_AUTH;
 247         wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
 248 #endif
 249         os_free(sta->challenge);
 250         sta->challenge = NULL;
 251
 252         return 0;
 253 }
 254
 255
 256 static void send_auth_reply(struct hostapd_data *hapd,
 257                             const u8 *dst, const u8 *bssid,
 258                             u16 auth_alg, u16 auth_transaction, u16 resp,
 259                             const u8 *ies, size_t ies_len)
 260 {
 261         struct ieee80211_mgmt *reply;
 262         u8 *buf;
 263         size_t rlen;
 264
 265         rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
 266         buf = os_zalloc(rlen);
 267         if (buf == NULL)
 268                 return;
 269
 270         reply = (struct ieee80211_mgmt *) buf;
 271         reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 272                                             WLAN_FC_STYPE_AUTH);
 273         os_memcpy(reply->da, dst, ETH_ALEN);
 274         os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
 275         os_memcpy(reply->bssid, bssid, ETH_ALEN);
 276
 277         reply->u.auth.auth_alg = host_to_le16(auth_alg);
 278         reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
 279         reply->u.auth.status_code = host_to_le16(resp);
 280
 281         if (ies && ies_len)
 282                 os_memcpy(reply->u.auth.variable, ies, ies_len);
 283
 284         wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
 285                    " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)",
 286                    MAC2STR(dst), auth_alg, auth_transaction,
 287                    resp, (unsigned long) ies_len);
 288         if (hostapd_drv_send_mlme(hapd, reply, rlen, 0) < 0)
 289                 perror("send_auth_reply: send");
 290
 291         os_free(buf);
 292 }
 293
 294
 295 #ifdef CONFIG_IEEE80211R
 296 static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
 297                                   u16 auth_transaction, u16 status,
 298                                   const u8 *ies, size_t ies_len)
 299 {
 300         struct hostapd_data *hapd = ctx;
 301         struct sta_info *sta;
 302
 303         send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction,
 304                         status, ies, ies_len);
 305
 306         if (status != WLAN_STATUS_SUCCESS)
 307                 return;
 308
 309         sta = ap_get_sta(hapd, dst);
 310         if (sta == NULL)
 311                 return;
 312
 313         hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
 314                        HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
 315         sta->flags |= WLAN_STA_AUTH;
 316         mlme_authenticate_indication(hapd, sta);
 317 }
 318 #endif /* CONFIG_IEEE80211R */
 319
 320
 321 #ifdef CONFIG_SAE
 322
 323 static struct wpabuf * auth_process_sae_commit(struct hostapd_data *hapd,
 324                                                struct sta_info *sta)
 325 {
 326         struct wpabuf *buf;
 327
 328         if (hapd->conf->ssid.wpa_passphrase == NULL) {
 329                 wpa_printf(MSG_DEBUG, "SAE: No password available");
 330                 return NULL;
 331         }
 332
 333         if (sae_prepare_commit(hapd->own_addr, sta->addr,
 334                                (u8 *) hapd->conf->ssid.wpa_passphrase,
 335                                os_strlen(hapd->conf->ssid.wpa_passphrase),
 336                                sta->sae) < 0) {
 337                 wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
 338                 return NULL;
 339         }
 340
 341         if (sae_process_commit(sta->sae) < 0) {
 342                 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer commit");
 343                 return NULL;
 344         }
 345
 346         buf = wpabuf_alloc(SAE_COMMIT_MAX_LEN);
 347         if (buf == NULL)
 348                 return NULL;
 349         sae_write_commit(sta->sae, buf, NULL);
 350
 351         return buf;
 352 }
 353
 354
 355 static struct wpabuf * auth_build_sae_confirm(struct hostapd_data *hapd,
 356                                               struct sta_info *sta)
 357 {
 358         struct wpabuf *buf;
 359
 360         buf = wpabuf_alloc(SAE_CONFIRM_MAX_LEN);
 361         if (buf == NULL)
 362                 return NULL;
 363
 364         sae_write_confirm(sta->sae, buf);
 365
 366         return buf;
 367 }
 368
 369
 370 static int use_sae_anti_clogging(struct hostapd_data *hapd)
 371 {
 372         struct sta_info *sta;
 373         unsigned int open = 0;
 374
 375         if (hapd->conf->sae_anti_clogging_threshold == 0)
 376                 return 1;
 377
 378         for (sta = hapd->sta_list; sta; sta = sta->next) {
 379                 if (!sta->sae)
 380                         continue;
 381                 if (sta->sae->state != SAE_COMMITTED &&
 382                     sta->sae->state != SAE_CONFIRMED)
 383                         continue;
 384                 open++;
 385                 if (open >= hapd->conf->sae_anti_clogging_threshold)
 386                         return 1;
 387         }
 388
 389         return 0;
 390 }
 391
 392
 393 static int check_sae_token(struct hostapd_data *hapd, const u8 *addr,
 394                            const u8 *token, size_t token_len)
 395 {
 396         u8 mac[SHA256_MAC_LEN];
 397
 398         if (token_len != SHA256_MAC_LEN)
 399                 return -1;
 400         if (hmac_sha256(hapd->sae_token_key, sizeof(hapd->sae_token_key),
 401                         addr, ETH_ALEN, mac) < 0 ||
 402             os_memcmp(token, mac, SHA256_MAC_LEN) != 0)
 403                 return -1;
 404
 405         return 0;
 406 }
 407
 408
 409 static struct wpabuf * auth_build_token_req(struct hostapd_data *hapd,
 410                                             const u8 *addr)
 411 {
 412         struct wpabuf *buf;
 413         u8 *token;
 414         struct os_time t;
 415
 416         os_get_time(&t);
 417         if (hapd->last_sae_token_key_update == 0 ||
 418             t.sec > hapd->last_sae_token_key_update + 60) {
 419                 if (random_get_bytes(hapd->sae_token_key,
 420                                      sizeof(hapd->sae_token_key)) < 0)
 421                         return NULL;
 422                 wpa_hexdump(MSG_DEBUG, "SAE: Updated token key",
 423                             hapd->sae_token_key, sizeof(hapd->sae_token_key));
 424                 hapd->last_sae_token_key_update = t.sec;
 425         }
 426
 427         buf = wpabuf_alloc(SHA256_MAC_LEN);
 428         if (buf == NULL)
 429                 return NULL;
 430
 431         token = wpabuf_put(buf, SHA256_MAC_LEN);
 432         hmac_sha256(hapd->sae_token_key, sizeof(hapd->sae_token_key),
 433                     addr, ETH_ALEN, token);
 434
 435         return buf;
 436 }
 437
 438
 439 static void handle_auth_sae(struct hostapd_data *hapd, struct sta_info *sta,
 440                             const struct ieee80211_mgmt *mgmt, size_t len,
 441                             u8 auth_transaction)
 442 {
 443         u16 resp = WLAN_STATUS_SUCCESS;
 444         struct wpabuf *data = NULL;
 445
 446         if (!sta->sae) {
 447                 if (auth_transaction != 1)
 448                         return;
 449                 sta->sae = os_zalloc(sizeof(*sta->sae));
 450                 if (sta->sae == NULL)
 451                         return;
 452                 sta->sae->state = SAE_NOTHING;
 453         }
 454
 455         if (auth_transaction == 1) {
 456                 const u8 *token = NULL;
 457                 size_t token_len = 0;
 458                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 459                                HOSTAPD_LEVEL_DEBUG,
 460                                "start SAE authentication (RX commit)");
 461                 resp = sae_parse_commit(sta->sae, mgmt->u.auth.variable,
 462                                         ((const u8 *) mgmt) + len -
 463                                         mgmt->u.auth.variable, &token,
 464                                         &token_len, hapd->conf->sae_groups);
 465                 if (token && check_sae_token(hapd, sta->addr, token, token_len)
 466                     < 0) {
 467                         wpa_printf(MSG_DEBUG, "SAE: Drop commit message with "
 468                                    "incorrect token from " MACSTR,
 469                                    MAC2STR(sta->addr));
 470                         return;
 471                 }
 472
 473                 if (resp == WLAN_STATUS_SUCCESS) {
 474                         if (!token && use_sae_anti_clogging(hapd)) {
 475                                 wpa_printf(MSG_DEBUG, "SAE: Request anti-"
 476                                            "clogging token from " MACSTR,
 477                                            MAC2STR(sta->addr));
 478                                 data = auth_build_token_req(hapd, sta->addr);
 479                                 resp = WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ;
 480                         } else {
 481                                 data = auth_process_sae_commit(hapd, sta);
 482                                 if (data == NULL)
 483                                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 484                                 else
 485                                         sta->sae->state = SAE_COMMITTED;
 486                         }
 487                 }
 488         } else if (auth_transaction == 2) {
 489                 if (sta->sae->state != SAE_COMMITTED) {
 490                         hostapd_logger(hapd, sta->addr,
 491                                        HOSTAPD_MODULE_IEEE80211,
 492                                        HOSTAPD_LEVEL_DEBUG,
 493                                        "SAE confirm before commit");
 494                         resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
 495                 }
 496                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 497                                HOSTAPD_LEVEL_DEBUG,
 498                                "SAE authentication (RX confirm)");
 499                 if (sae_check_confirm(sta->sae, mgmt->u.auth.variable,
 500                                        ((u8 *) mgmt) + len -
 501                                        mgmt->u.auth.variable) < 0) {
 502                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 503                 } else {
 504                         resp = WLAN_STATUS_SUCCESS;
 505                         sta->flags |= WLAN_STA_AUTH;
 506                         wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
 507                         sta->auth_alg = WLAN_AUTH_SAE;
 508                         mlme_authenticate_indication(hapd, sta);
 509
 510                         data = auth_build_sae_confirm(hapd, sta);
 511                         if (data == NULL)
 512                                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 513                         else {
 514                                 sta->sae->state = SAE_ACCEPTED;
 515                                 sae_clear_temp_data(sta->sae);
 516                         }
 517                 }
 518         } else {
 519                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 520                                HOSTAPD_LEVEL_DEBUG,
 521                                "unexpected SAE authentication transaction %u",
 522                                auth_transaction);
 523                 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
 524         }
 525
 526         sta->auth_alg = WLAN_AUTH_SAE;
 527
 528         send_auth_reply(hapd, mgmt->sa, mgmt->bssid, WLAN_AUTH_SAE,
 529                         auth_transaction, resp,
 530                         data ? wpabuf_head(data) : (u8 *) "",
 531                         data ? wpabuf_len(data) : 0);
 532         wpabuf_free(data);
 533 }
 534 #endif /* CONFIG_SAE */
 535
 536
 537 static void handle_auth(struct hostapd_data *hapd,
 538                         const struct ieee80211_mgmt *mgmt, size_t len)
 539 {
 540         u16 auth_alg, auth_transaction, status_code;
 541         u16 resp = WLAN_STATUS_SUCCESS;
 542         struct sta_info *sta = NULL;
 543         int res;
 544         u16 fc;
 545         const u8 *challenge = NULL;
 546         u32 session_timeout, acct_interim_interval;
 547         int vlan_id = 0;
 548         struct hostapd_sta_wpa_psk_short *psk = NULL;
 549         u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
 550         size_t resp_ies_len = 0;
 551         char *identity = NULL;
 552         char *radius_cui = NULL;
 553
 554         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
 555                 printf("handle_auth - too short payload (len=%lu)\n",
 556                        (unsigned long) len);
 557                 return;
 558         }
 559
 560 #ifdef CONFIG_TESTING_OPTIONS
 561         if (hapd->iconf->ignore_auth_probability > 0.0d &&
 562             drand48() < hapd->iconf->ignore_auth_probability) {
 563                 wpa_printf(MSG_INFO,
 564                            "TESTING: ignoring auth frame from " MACSTR,
 565                            MAC2STR(mgmt->sa));
 566                 return;
 567         }
 568 #endif /* CONFIG_TESTING_OPTIONS */
 569
 570         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
 571         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
 572         status_code = le_to_host16(mgmt->u.auth.status_code);
 573         fc = le_to_host16(mgmt->frame_control);
 574
 575         if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
 576             2 + WLAN_AUTH_CHALLENGE_LEN &&
 577             mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
 578             mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
 579                 challenge = &mgmt->u.auth.variable[2];
 580
 581         wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
 582                    "auth_transaction=%d status_code=%d wep=%d%s",
 583                    MAC2STR(mgmt->sa), auth_alg, auth_transaction,
 584                    status_code, !!(fc & WLAN_FC_ISWEP),
 585                    challenge ? " challenge" : "");
 586
 587         if (hapd->tkip_countermeasures) {
 588                 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
 589                 goto fail;
 590         }
 591
 592         if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
 593                auth_alg == WLAN_AUTH_OPEN) ||
 594 #ifdef CONFIG_IEEE80211R
 595               (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) &&
 596                auth_alg == WLAN_AUTH_FT) ||
 597 #endif /* CONFIG_IEEE80211R */
 598 #ifdef CONFIG_SAE
 599               (hapd->conf->wpa && wpa_key_mgmt_sae(hapd->conf->wpa_key_mgmt) &&
 600                auth_alg == WLAN_AUTH_SAE) ||
 601 #endif /* CONFIG_SAE */
 602               ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
 603                auth_alg == WLAN_AUTH_SHARED_KEY))) {
 604                 printf("Unsupported authentication algorithm (%d)\n",
 605                        auth_alg);
 606                 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
 607                 goto fail;
 608         }
 609
 610         if (!(auth_transaction == 1 || auth_alg == WLAN_AUTH_SAE ||
 611               (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
 612                 printf("Unknown authentication transaction number (%d)\n",
 613                        auth_transaction);
 614                 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
 615                 goto fail;
 616         }
 617
 618         if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
 619                 printf("Station " MACSTR " not allowed to authenticate.\n",
 620                        MAC2STR(mgmt->sa));
 621                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 622                 goto fail;
 623         }
 624
 625         res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
 626                                       &session_timeout,
 627                                       &acct_interim_interval, &vlan_id,
 628                                       &psk, &identity, &radius_cui);
 629
 630         if (res == HOSTAPD_ACL_REJECT) {
 631                 printf("Station " MACSTR " not allowed to authenticate.\n",
 632                        MAC2STR(mgmt->sa));
 633                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 634                 goto fail;
 635         }
 636         if (res == HOSTAPD_ACL_PENDING) {
 637                 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
 638                            " waiting for an external authentication",
 639                            MAC2STR(mgmt->sa));
 640                 /* Authentication code will re-send the authentication frame
 641                  * after it has received (and cached) information from the
 642                  * external source. */
 643                 return;
 644         }
 645
 646         sta = ap_sta_add(hapd, mgmt->sa);
 647         if (!sta) {
 648                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 649                 goto fail;
 650         }
 651
 652         if (vlan_id > 0) {
 653                 if (hostapd_get_vlan_id_ifname(hapd->conf->vlan,
 654                                                vlan_id) == NULL) {
 655                         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
 656                                        HOSTAPD_LEVEL_INFO, "Invalid VLAN ID "
 657                                        "%d received from RADIUS server",
 658                                        vlan_id);
 659                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 660                         goto fail;
 661                 }
 662                 sta->vlan_id = vlan_id;
 663                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
 664                                HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
 665         }
 666
 667         hostapd_free_psk_list(sta->psk);
 668         if (hapd->conf->wpa_psk_radius != PSK_RADIUS_IGNORED) {
 669                 sta->psk = psk;
 670                 psk = NULL;
 671         } else {
 672                 sta->psk = NULL;
 673         }
 674
 675         sta->identity = identity;
 676         identity = NULL;
 677         sta->radius_cui = radius_cui;
 678         radius_cui = NULL;
 679
 680         sta->flags &= ~WLAN_STA_PREAUTH;
 681         ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
 682
 683         if (hapd->conf->acct_interim_interval == 0 && acct_interim_interval)
 684                 sta->acct_interim_interval = acct_interim_interval;
 685         if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
 686                 ap_sta_session_timeout(hapd, sta, session_timeout);
 687         else
 688                 ap_sta_no_session_timeout(hapd, sta);
 689
 690         switch (auth_alg) {
 691         case WLAN_AUTH_OPEN:
 692                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 693                                HOSTAPD_LEVEL_DEBUG,
 694                                "authentication OK (open system)");
 695 #ifdef IEEE80211_REQUIRE_AUTH_ACK
 696                 /* Station will be marked authenticated if it ACKs the
 697                  * authentication reply. */
 698 #else
 699                 sta->flags |= WLAN_STA_AUTH;
 700                 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
 701                 sta->auth_alg = WLAN_AUTH_OPEN;
 702                 mlme_authenticate_indication(hapd, sta);
 703 #endif
 704                 break;
 705         case WLAN_AUTH_SHARED_KEY:
 706                 resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
 707                                        fc & WLAN_FC_ISWEP);
 708                 sta->auth_alg = WLAN_AUTH_SHARED_KEY;
 709                 mlme_authenticate_indication(hapd, sta);
 710                 if (sta->challenge && auth_transaction == 1) {
 711                         resp_ies[0] = WLAN_EID_CHALLENGE;
 712                         resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
 713                         os_memcpy(resp_ies + 2, sta->challenge,
 714                                   WLAN_AUTH_CHALLENGE_LEN);
 715                         resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
 716                 }
 717                 break;
 718 #ifdef CONFIG_IEEE80211R
 719         case WLAN_AUTH_FT:
 720                 sta->auth_alg = WLAN_AUTH_FT;
 721                 if (sta->wpa_sm == NULL)
 722                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
 723                                                         sta->addr);
 724                 if (sta->wpa_sm == NULL) {
 725                         wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
 726                                    "state machine");
 727                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 728                         goto fail;
 729                 }
 730                 wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
 731                                     auth_transaction, mgmt->u.auth.variable,
 732                                     len - IEEE80211_HDRLEN -
 733                                     sizeof(mgmt->u.auth),
 734                                     handle_auth_ft_finish, hapd);
 735                 /* handle_auth_ft_finish() callback will complete auth. */
 736                 return;
 737 #endif /* CONFIG_IEEE80211R */
 738 #ifdef CONFIG_SAE
 739         case WLAN_AUTH_SAE:
 740                 handle_auth_sae(hapd, sta, mgmt, len, auth_transaction);
 741                 return;
 742 #endif /* CONFIG_SAE */
 743         }
 744
 745  fail:
 746         os_free(identity);
 747         os_free(radius_cui);
 748         hostapd_free_psk_list(psk);
 749
 750         send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
 751                         auth_transaction + 1, resp, resp_ies, resp_ies_len);
 752 }
 753
 754
 755 static int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta)
 756 {
 757         int i, j = 32, aid;
 758
 759         /* get a unique AID */
 760         if (sta->aid > 0) {
 761                 wpa_printf(MSG_DEBUG, "  old AID %d", sta->aid);
 762                 return 0;
 763         }
 764
 765         for (i = 0; i < AID_WORDS; i++) {
 766                 if (hapd->sta_aid[i] == (u32) -1)
 767                         continue;
 768                 for (j = 0; j < 32; j++) {
 769                         if (!(hapd->sta_aid[i] & BIT(j)))
 770                                 break;
 771                 }
 772                 if (j < 32)
 773                         break;
 774         }
 775         if (j == 32)
 776                 return -1;
 777         aid = i * 32 + j + 1;
 778         if (aid > 2007)
 779                 return -1;
 780
 781         sta->aid = aid;
 782         hapd->sta_aid[i] |= BIT(j);
 783         wpa_printf(MSG_DEBUG, "  new AID %d", sta->aid);
 784         return 0;
 785 }
 786
 787
 788 static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta,
 789                       const u8 *ssid_ie, size_t ssid_ie_len)
 790 {
 791         if (ssid_ie == NULL)
 792                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 793
 794         if (ssid_ie_len != hapd->conf->ssid.ssid_len ||
 795             os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) {
 796                 char ssid_txt[33];
 797                 ieee802_11_print_ssid(ssid_txt, ssid_ie, ssid_ie_len);
 798                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 799                                HOSTAPD_LEVEL_INFO,
 800                                "Station tried to associate with unknown SSID "
 801                                "'%s'", ssid_txt);
 802                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 803         }
 804
 805         return WLAN_STATUS_SUCCESS;
 806 }
 807
 808
 809 static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta,
 810                      const u8 *wmm_ie, size_t wmm_ie_len)
 811 {
 812         sta->flags &= ~WLAN_STA_WMM;
 813         sta->qosinfo = 0;
 814         if (wmm_ie && hapd->conf->wmm_enabled) {
 815                 struct wmm_information_element *wmm;
 816
 817                 if (!hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len)) {
 818                         hostapd_logger(hapd, sta->addr,
 819                                        HOSTAPD_MODULE_WPA,
 820                                        HOSTAPD_LEVEL_DEBUG,
 821                                        "invalid WMM element in association "
 822                                        "request");
 823                         return WLAN_STATUS_UNSPECIFIED_FAILURE;
 824                 }
 825
 826                 sta->flags |= WLAN_STA_WMM;
 827                 wmm = (struct wmm_information_element *) wmm_ie;
 828                 sta->qosinfo = wmm->qos_info;
 829         }
 830         return WLAN_STATUS_SUCCESS;
 831 }
 832
 833
 834 static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta,
 835                            struct ieee802_11_elems *elems)
 836 {
 837         if (!elems->supp_rates) {
 838                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 839                                HOSTAPD_LEVEL_DEBUG,
 840                                "No supported rates element in AssocReq");
 841                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 842         }
 843
 844         if (elems->supp_rates_len + elems->ext_supp_rates_len >
 845             sizeof(sta->supported_rates)) {
 846                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 847                                HOSTAPD_LEVEL_DEBUG,
 848                                "Invalid supported rates element length %d+%d",
 849                                elems->supp_rates_len,
 850                                elems->ext_supp_rates_len);
 851                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 852         }
 853
 854         sta->supported_rates_len = merge_byte_arrays(
 855                 sta->supported_rates, sizeof(sta->supported_rates),
 856                 elems->supp_rates, elems->supp_rates_len,
 857                 elems->ext_supp_rates, elems->ext_supp_rates_len);
 858
 859         return WLAN_STATUS_SUCCESS;
 860 }
 861
 862
 863 static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta,
 864                            const u8 *ies, size_t ies_len, int reassoc)
 865 {
 866         struct ieee802_11_elems elems;
 867         u16 resp;
 868         const u8 *wpa_ie;
 869         size_t wpa_ie_len;
 870
 871         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) {
 872                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 873                                HOSTAPD_LEVEL_INFO, "Station sent an invalid "
 874                                "association request");
 875                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 876         }
 877
 878         resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len);
 879         if (resp != WLAN_STATUS_SUCCESS)
 880                 return resp;
 881         resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len);
 882         if (resp != WLAN_STATUS_SUCCESS)
 883                 return resp;
 884         resp = copy_supp_rates(hapd, sta, &elems);
 885         if (resp != WLAN_STATUS_SUCCESS)
 886                 return resp;
 887 #ifdef CONFIG_IEEE80211N
 888         resp = copy_sta_ht_capab(hapd, sta, elems.ht_capabilities,
 889                                  elems.ht_capabilities_len);
 890         if (resp != WLAN_STATUS_SUCCESS)
 891                 return resp;
 892         if (hapd->iconf->ieee80211n && hapd->iconf->require_ht &&
 893             !(sta->flags & WLAN_STA_HT)) {
 894                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 895                                HOSTAPD_LEVEL_INFO, "Station does not support "
 896                                "mandatory HT PHY - reject association");
 897                 return WLAN_STATUS_ASSOC_DENIED_NO_HT;
 898         }
 899 #endif /* CONFIG_IEEE80211N */
 900
 901 #ifdef CONFIG_IEEE80211AC
 902         resp = copy_sta_vht_capab(hapd, sta, elems.vht_capabilities,
 903                                   elems.vht_capabilities_len);
 904         if (resp != WLAN_STATUS_SUCCESS)
 905                 return resp;
 906         if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht &&
 907             !(sta->flags & WLAN_STA_VHT)) {
 908                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 909                                HOSTAPD_LEVEL_INFO, "Station does not support "
 910                                "mandatory VHT PHY - reject association");
 911                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 912         }
 913 #endif /* CONFIG_IEEE80211AC */
 914
 915         if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
 916                 wpa_ie = elems.rsn_ie;
 917                 wpa_ie_len = elems.rsn_ie_len;
 918         } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
 919                    elems.wpa_ie) {
 920                 wpa_ie = elems.wpa_ie;
 921                 wpa_ie_len = elems.wpa_ie_len;
 922         } else {
 923                 wpa_ie = NULL;
 924                 wpa_ie_len = 0;
 925         }
 926
 927 #ifdef CONFIG_WPS
 928         sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS | WLAN_STA_WPS2);
 929         if (hapd->conf->wps_state && elems.wps_ie) {
 930                 wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association "
 931                            "Request - assume WPS is used");
 932                 sta->flags |= WLAN_STA_WPS;
 933                 wpabuf_free(sta->wps_ie);
 934                 sta->wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
 935                                                           WPS_IE_VENDOR_TYPE);
 936                 if (sta->wps_ie && wps_is_20(sta->wps_ie)) {
 937                         wpa_printf(MSG_DEBUG, "WPS: STA supports WPS 2.0");
 938                         sta->flags |= WLAN_STA_WPS2;
 939                 }
 940                 wpa_ie = NULL;
 941                 wpa_ie_len = 0;
 942                 if (sta->wps_ie && wps_validate_assoc_req(sta->wps_ie) < 0) {
 943                         wpa_printf(MSG_DEBUG, "WPS: Invalid WPS IE in "
 944                                    "(Re)Association Request - reject");
 945                         return WLAN_STATUS_INVALID_IE;
 946                 }
 947         } else if (hapd->conf->wps_state && wpa_ie == NULL) {
 948                 wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE in "
 949                            "(Re)Association Request - possible WPS use");
 950                 sta->flags |= WLAN_STA_MAYBE_WPS;
 951         } else
 952 #endif /* CONFIG_WPS */
 953         if (hapd->conf->wpa && wpa_ie == NULL) {
 954                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 955                                HOSTAPD_LEVEL_INFO,
 956                                "No WPA/RSN IE in association request");
 957                 return WLAN_STATUS_INVALID_IE;
 958         }
 959
 960         if (hapd->conf->wpa && wpa_ie) {
 961                 int res;
 962                 wpa_ie -= 2;
 963                 wpa_ie_len += 2;
 964                 if (sta->wpa_sm == NULL)
 965                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
 966                                                         sta->addr);
 967                 if (sta->wpa_sm == NULL) {
 968                         wpa_printf(MSG_WARNING, "Failed to initialize WPA "
 969                                    "state machine");
 970                         return WLAN_STATUS_UNSPECIFIED_FAILURE;
 971                 }
 972                 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
 973                                           wpa_ie, wpa_ie_len,
 974                                           elems.mdie, elems.mdie_len);
 975                 if (res == WPA_INVALID_GROUP)
 976                         resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
 977                 else if (res == WPA_INVALID_PAIRWISE)
 978                         resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
 979                 else if (res == WPA_INVALID_AKMP)
 980                         resp = WLAN_STATUS_AKMP_NOT_VALID;
 981                 else if (res == WPA_ALLOC_FAIL)
 982                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 983 #ifdef CONFIG_IEEE80211W
 984                 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
 985                         resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
 986                 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
 987                         resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
 988 #endif /* CONFIG_IEEE80211W */
 989                 else if (res == WPA_INVALID_MDIE)
 990                         resp = WLAN_STATUS_INVALID_MDIE;
 991                 else if (res != WPA_IE_OK)
 992                         resp = WLAN_STATUS_INVALID_IE;
 993                 if (resp != WLAN_STATUS_SUCCESS)
 994                         return resp;
 995 #ifdef CONFIG_IEEE80211W
 996                 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
 997                     sta->sa_query_count > 0)
 998                         ap_check_sa_query_timeout(hapd, sta);
 999                 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
1000                     (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) {
1001                         /*
1002                          * STA has already been associated with MFP and SA
1003                          * Query timeout has not been reached. Reject the
1004                          * association attempt temporarily and start SA Query,
1005                          * if one is not pending.
1006                          */
1007
1008                         if (sta->sa_query_count == 0)
1009                                 ap_sta_start_sa_query(hapd, sta);
1010
1011                         return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
1012                 }
1013
1014                 if (wpa_auth_uses_mfp(sta->wpa_sm))
1015                         sta->flags |= WLAN_STA_MFP;
1016                 else
1017                         sta->flags &= ~WLAN_STA_MFP;
1018 #endif /* CONFIG_IEEE80211W */
1019
1020 #ifdef CONFIG_IEEE80211R
1021                 if (sta->auth_alg == WLAN_AUTH_FT) {
1022                         if (!reassoc) {
1023                                 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
1024                                            "to use association (not "
1025                                            "re-association) with FT auth_alg",
1026                                            MAC2STR(sta->addr));
1027                                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1028                         }
1029
1030                         resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies,
1031                                                        ies_len);
1032                         if (resp != WLAN_STATUS_SUCCESS)
1033                                 return resp;
1034                 }
1035 #endif /* CONFIG_IEEE80211R */
1036
1037 #ifdef CONFIG_SAE
1038                 if (wpa_auth_uses_sae(sta->wpa_sm) &&
1039                     sta->auth_alg != WLAN_AUTH_SAE) {
1040                         wpa_printf(MSG_DEBUG, "SAE: " MACSTR " tried to use "
1041                                    "SAE AKM after non-SAE auth_alg %u",
1042                                    MAC2STR(sta->addr), sta->auth_alg);
1043                         return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1044                 }
1045 #endif /* CONFIG_SAE */
1046
1047 #ifdef CONFIG_IEEE80211N
1048                 if ((sta->flags & (WLAN_STA_HT | WLAN_STA_VHT)) &&
1049                     wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
1050                         hostapd_logger(hapd, sta->addr,
1051                                        HOSTAPD_MODULE_IEEE80211,
1052                                        HOSTAPD_LEVEL_INFO,
1053                                        "Station tried to use TKIP with HT "
1054                                        "association");
1055                         return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
1056                 }
1057 #endif /* CONFIG_IEEE80211N */
1058         } else
1059                 wpa_auth_sta_no_wpa(sta->wpa_sm);
1060
1061 #ifdef CONFIG_P2P
1062         if (elems.p2p) {
1063                 wpabuf_free(sta->p2p_ie);
1064                 sta->p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
1065                                                           P2P_IE_VENDOR_TYPE);
1066
1067         } else {
1068                 wpabuf_free(sta->p2p_ie);
1069                 sta->p2p_ie = NULL;
1070         }
1071
1072         p2p_group_notif_assoc(hapd->p2p_group, sta->addr, ies, ies_len);
1073 #endif /* CONFIG_P2P */
1074
1075 #ifdef CONFIG_HS20
1076         wpabuf_free(sta->hs20_ie);
1077         if (elems.hs20 && elems.hs20_len > 4) {
1078                 sta->hs20_ie = wpabuf_alloc_copy(elems.hs20 + 4,
1079                                                  elems.hs20_len - 4);
1080         } else
1081                 sta->hs20_ie = NULL;
1082 #endif /* CONFIG_HS20 */
1083
1084         return WLAN_STATUS_SUCCESS;
1085 }
1086
1087
1088 static void send_deauth(struct hostapd_data *hapd, const u8 *addr,
1089                         u16 reason_code)
1090 {
1091         int send_len;
1092         struct ieee80211_mgmt reply;
1093
1094         os_memset(&reply, 0, sizeof(reply));
1095         reply.frame_control =
1096                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH);
1097         os_memcpy(reply.da, addr, ETH_ALEN);
1098         os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN);
1099         os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN);
1100
1101         send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth);
1102         reply.u.deauth.reason_code = host_to_le16(reason_code);
1103
1104         if (hostapd_drv_send_mlme(hapd, &reply, send_len, 0) < 0)
1105                 wpa_printf(MSG_INFO, "Failed to send deauth: %s",
1106                            strerror(errno));
1107 }
1108
1109
1110 static void send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta,
1111                             u16 status_code, int reassoc, const u8 *ies,
1112                             size_t ies_len)
1113 {
1114         int send_len;
1115         u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
1116         struct ieee80211_mgmt *reply;
1117         u8 *p;
1118
1119         os_memset(buf, 0, sizeof(buf));
1120         reply = (struct ieee80211_mgmt *) buf;
1121         reply->frame_control =
1122                 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1123                              (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
1124                               WLAN_FC_STYPE_ASSOC_RESP));
1125         os_memcpy(reply->da, sta->addr, ETH_ALEN);
1126         os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
1127         os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN);
1128
1129         send_len = IEEE80211_HDRLEN;
1130         send_len += sizeof(reply->u.assoc_resp);
1131         reply->u.assoc_resp.capab_info =
1132                 host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
1133         reply->u.assoc_resp.status_code = host_to_le16(status_code);
1134         reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
1135                                                | BIT(14) | BIT(15));
1136         /* Supported rates */
1137         p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
1138         /* Extended supported rates */
1139         p = hostapd_eid_ext_supp_rates(hapd, p);
1140
1141 #ifdef CONFIG_IEEE80211R
1142         if (status_code == WLAN_STATUS_SUCCESS) {
1143                 /* IEEE 802.11r: Mobility Domain Information, Fast BSS
1144                  * Transition Information, RSN, [RIC Response] */
1145                 p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
1146                                                 buf + sizeof(buf) - p,
1147                                                 sta->auth_alg, ies, ies_len);
1148         }
1149 #endif /* CONFIG_IEEE80211R */
1150
1151 #ifdef CONFIG_IEEE80211W
1152         if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
1153                 p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
1154 #endif /* CONFIG_IEEE80211W */
1155
1156 #ifdef CONFIG_IEEE80211N
1157         p = hostapd_eid_ht_capabilities(hapd, p);
1158         p = hostapd_eid_ht_operation(hapd, p);
1159 #endif /* CONFIG_IEEE80211N */
1160
1161 #ifdef CONFIG_IEEE80211AC
1162         p = hostapd_eid_vht_capabilities(hapd, p);
1163         p = hostapd_eid_vht_operation(hapd, p);
1164 #endif /* CONFIG_IEEE80211AC */
1165
1166         p = hostapd_eid_ext_capab(hapd, p);
1167         p = hostapd_eid_bss_max_idle_period(hapd, p);
1168
1169         if (sta->flags & WLAN_STA_WMM)
1170                 p = hostapd_eid_wmm(hapd, p);
1171
1172 #ifdef CONFIG_WPS
1173         if ((sta->flags & WLAN_STA_WPS) ||
1174             ((sta->flags & WLAN_STA_MAYBE_WPS) && hapd->conf->wpa)) {
1175                 struct wpabuf *wps = wps_build_assoc_resp_ie();
1176                 if (wps) {
1177                         os_memcpy(p, wpabuf_head(wps), wpabuf_len(wps));
1178                         p += wpabuf_len(wps);
1179                         wpabuf_free(wps);
1180                 }
1181         }
1182 #endif /* CONFIG_WPS */
1183
1184 #ifdef CONFIG_P2P
1185         if (sta->p2p_ie) {
1186                 struct wpabuf *p2p_resp_ie;
1187                 enum p2p_status_code status;
1188                 switch (status_code) {
1189                 case WLAN_STATUS_SUCCESS:
1190                         status = P2P_SC_SUCCESS;
1191                         break;
1192                 case WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA:
1193                         status = P2P_SC_FAIL_LIMIT_REACHED;
1194                         break;
1195                 default:
1196                         status = P2P_SC_FAIL_INVALID_PARAMS;
1197                         break;
1198                 }
1199                 p2p_resp_ie = p2p_group_assoc_resp_ie(hapd->p2p_group, status);
1200                 if (p2p_resp_ie) {
1201                         os_memcpy(p, wpabuf_head(p2p_resp_ie),
1202                                   wpabuf_len(p2p_resp_ie));
1203                         p += wpabuf_len(p2p_resp_ie);
1204                         wpabuf_free(p2p_resp_ie);
1205                 }
1206         }
1207 #endif /* CONFIG_P2P */
1208
1209 #ifdef CONFIG_P2P_MANAGER
1210         if (hapd->conf->p2p & P2P_MANAGE)
1211                 p = hostapd_eid_p2p_manage(hapd, p);
1212 #endif /* CONFIG_P2P_MANAGER */
1213
1214         send_len += p - reply->u.assoc_resp.variable;
1215
1216         if (hostapd_drv_send_mlme(hapd, reply, send_len, 0) < 0)
1217                 wpa_printf(MSG_INFO, "Failed to send assoc resp: %s",
1218                            strerror(errno));
1219 }
1220
1221
1222 static void handle_assoc(struct hostapd_data *hapd,
1223                          const struct ieee80211_mgmt *mgmt, size_t len,
1224                          int reassoc)
1225 {
1226         u16 capab_info, listen_interval;
1227         u16 resp = WLAN_STATUS_SUCCESS;
1228         const u8 *pos;
1229         int left, i;
1230         struct sta_info *sta;
1231
1232         if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
1233                                       sizeof(mgmt->u.assoc_req))) {
1234                 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
1235                        "\n", reassoc, (unsigned long) len);
1236                 return;
1237         }
1238
1239 #ifdef CONFIG_TESTING_OPTIONS
1240         if (reassoc) {
1241                 if (hapd->iconf->ignore_reassoc_probability > 0.0d &&
1242                     drand48() < hapd->iconf->ignore_reassoc_probability) {
1243                         wpa_printf(MSG_INFO,
1244                                    "TESTING: ignoring reassoc request from "
1245                                    MACSTR, MAC2STR(mgmt->sa));
1246                         return;
1247                 }
1248         } else {
1249                 if (hapd->iconf->ignore_assoc_probability > 0.0d &&
1250                     drand48() < hapd->iconf->ignore_assoc_probability) {
1251                         wpa_printf(MSG_INFO,
1252                                    "TESTING: ignoring assoc request from "
1253                                    MACSTR, MAC2STR(mgmt->sa));
1254                         return;
1255                 }
1256         }
1257 #endif /* CONFIG_TESTING_OPTIONS */
1258
1259         if (reassoc) {
1260                 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
1261                 listen_interval = le_to_host16(
1262                         mgmt->u.reassoc_req.listen_interval);
1263                 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
1264                            " capab_info=0x%02x listen_interval=%d current_ap="
1265                            MACSTR,
1266                            MAC2STR(mgmt->sa), capab_info, listen_interval,
1267                            MAC2STR(mgmt->u.reassoc_req.current_ap));
1268                 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
1269                 pos = mgmt->u.reassoc_req.variable;
1270         } else {
1271                 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
1272                 listen_interval = le_to_host16(
1273                         mgmt->u.assoc_req.listen_interval);
1274                 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
1275                            " capab_info=0x%02x listen_interval=%d",
1276                            MAC2STR(mgmt->sa), capab_info, listen_interval);
1277                 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
1278                 pos = mgmt->u.assoc_req.variable;
1279         }
1280
1281         sta = ap_get_sta(hapd, mgmt->sa);
1282 #ifdef CONFIG_IEEE80211R
1283         if (sta && sta->auth_alg == WLAN_AUTH_FT &&
1284             (sta->flags & WLAN_STA_AUTH) == 0) {
1285                 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
1286                            "prior to authentication since it is using "
1287                            "over-the-DS FT", MAC2STR(mgmt->sa));
1288         } else
1289 #endif /* CONFIG_IEEE80211R */
1290         if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
1291                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1292                                HOSTAPD_LEVEL_INFO, "Station tried to "
1293                                "associate before authentication "
1294                                "(aid=%d flags=0x%x)",
1295                                sta ? sta->aid : -1,
1296                                sta ? sta->flags : 0);
1297                 send_deauth(hapd, mgmt->sa,
1298                             WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA);
1299                 return;
1300         }
1301
1302         if (hapd->tkip_countermeasures) {
1303                 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
1304                 goto fail;
1305         }
1306
1307         if (listen_interval > hapd->conf->max_listen_interval) {
1308                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1309                                HOSTAPD_LEVEL_DEBUG,
1310                                "Too large Listen Interval (%d)",
1311                                listen_interval);
1312                 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
1313                 goto fail;
1314         }
1315
1316         /* followed by SSID and Supported rates; and HT capabilities if 802.11n
1317          * is used */
1318         resp = check_assoc_ies(hapd, sta, pos, left, reassoc);
1319         if (resp != WLAN_STATUS_SUCCESS)
1320                 goto fail;
1321
1322         if (hostapd_get_aid(hapd, sta) < 0) {
1323                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1324                                HOSTAPD_LEVEL_INFO, "No room for more AIDs");
1325                 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
1326                 goto fail;
1327         }
1328
1329         sta->capability = capab_info;
1330         sta->listen_interval = listen_interval;
1331
1332         if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
1333                 sta->flags |= WLAN_STA_NONERP;
1334         for (i = 0; i < sta->supported_rates_len; i++) {
1335                 if ((sta->supported_rates[i] & 0x7f) > 22) {
1336                         sta->flags &= ~WLAN_STA_NONERP;
1337                         break;
1338                 }
1339         }
1340         if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
1341                 sta->nonerp_set = 1;
1342                 hapd->iface->num_sta_non_erp++;
1343                 if (hapd->iface->num_sta_non_erp == 1)
1344                         ieee802_11_set_beacons(hapd->iface);
1345         }
1346
1347         if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
1348             !sta->no_short_slot_time_set) {
1349                 sta->no_short_slot_time_set = 1;
1350                 hapd->iface->num_sta_no_short_slot_time++;
1351                 if (hapd->iface->current_mode->mode ==
1352                     HOSTAPD_MODE_IEEE80211G &&
1353                     hapd->iface->num_sta_no_short_slot_time == 1)
1354                         ieee802_11_set_beacons(hapd->iface);
1355         }
1356
1357         if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1358                 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
1359         else
1360                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
1361
1362         if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
1363             !sta->no_short_preamble_set) {
1364                 sta->no_short_preamble_set = 1;
1365                 hapd->iface->num_sta_no_short_preamble++;
1366                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
1367                     && hapd->iface->num_sta_no_short_preamble == 1)
1368                         ieee802_11_set_beacons(hapd->iface);
1369         }
1370
1371 #ifdef CONFIG_IEEE80211N
1372         update_ht_state(hapd, sta);
1373 #endif /* CONFIG_IEEE80211N */
1374
1375         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1376                        HOSTAPD_LEVEL_DEBUG,
1377                        "association OK (aid %d)", sta->aid);
1378         /* Station will be marked associated, after it acknowledges AssocResp
1379          */
1380         sta->flags |= WLAN_STA_ASSOC_REQ_OK;
1381
1382 #ifdef CONFIG_IEEE80211W
1383         if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) {
1384                 wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out "
1385                            "SA Query procedure", reassoc ? "re" : "");
1386                 /* TODO: Send a protected Disassociate frame to the STA using
1387                  * the old key and Reason Code "Previous Authentication no
1388                  * longer valid". Make sure this is only sent protected since
1389                  * unprotected frame would be received by the STA that is now
1390                  * trying to associate.
1391                  */
1392         }
1393 #endif /* CONFIG_IEEE80211W */
1394
1395         if (reassoc) {
1396                 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
1397                           ETH_ALEN);
1398         }
1399
1400         if (sta->last_assoc_req)
1401                 os_free(sta->last_assoc_req);
1402         sta->last_assoc_req = os_malloc(len);
1403         if (sta->last_assoc_req)
1404                 os_memcpy(sta->last_assoc_req, mgmt, len);
1405
1406         /* Make sure that the previously registered inactivity timer will not
1407          * remove the STA immediately. */
1408         sta->timeout_next = STA_NULLFUNC;
1409
1410  fail:
1411         send_assoc_resp(hapd, sta, resp, reassoc, pos, left);
1412 }
1413
1414
1415 static void handle_disassoc(struct hostapd_data *hapd,
1416                             const struct ieee80211_mgmt *mgmt, size_t len)
1417 {
1418         struct sta_info *sta;
1419
1420         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
1421                 printf("handle_disassoc - too short payload (len=%lu)\n",
1422                        (unsigned long) len);
1423                 return;
1424         }
1425
1426         wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
1427                    MAC2STR(mgmt->sa),
1428                    le_to_host16(mgmt->u.disassoc.reason_code));
1429
1430         sta = ap_get_sta(hapd, mgmt->sa);
1431         if (sta == NULL) {
1432                 printf("Station " MACSTR " trying to disassociate, but it "
1433                        "is not associated.\n", MAC2STR(mgmt->sa));
1434                 return;
1435         }
1436
1437         ap_sta_set_authorized(hapd, sta, 0);
1438         sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK);
1439         wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
1440         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1441                        HOSTAPD_LEVEL_INFO, "disassociated");
1442         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1443         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1444         /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
1445          * authenticated. */
1446         accounting_sta_stop(hapd, sta);
1447         ieee802_1x_free_station(sta);
1448         hostapd_drv_sta_remove(hapd, sta->addr);
1449
1450         if (sta->timeout_next == STA_NULLFUNC ||
1451             sta->timeout_next == STA_DISASSOC) {
1452                 sta->timeout_next = STA_DEAUTH;
1453                 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1454                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
1455                                        hapd, sta);
1456         }
1457
1458         mlme_disassociate_indication(
1459                 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
1460 }
1461
1462
1463 static void handle_deauth(struct hostapd_data *hapd,
1464                           const struct ieee80211_mgmt *mgmt, size_t len)
1465 {
1466         struct sta_info *sta;
1467
1468         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
1469                 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "handle_deauth - too short "
1470                         "payload (len=%lu)", (unsigned long) len);
1471                 return;
1472         }
1473
1474         wpa_msg(hapd->msg_ctx, MSG_DEBUG, "deauthentication: STA=" MACSTR
1475                 " reason_code=%d",
1476                 MAC2STR(mgmt->sa), le_to_host16(mgmt->u.deauth.reason_code));
1477
1478         sta = ap_get_sta(hapd, mgmt->sa);
1479         if (sta == NULL) {
1480                 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR " trying "
1481                         "to deauthenticate, but it is not authenticated",
1482                         MAC2STR(mgmt->sa));
1483                 return;
1484         }
1485
1486         ap_sta_set_authorized(hapd, sta, 0);
1487         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
1488                         WLAN_STA_ASSOC_REQ_OK);
1489         wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1490         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1491                        HOSTAPD_LEVEL_DEBUG, "deauthenticated");
1492         mlme_deauthenticate_indication(
1493                 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
1494         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1495         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1496         ap_free_sta(hapd, sta);
1497 }
1498
1499
1500 static void handle_beacon(struct hostapd_data *hapd,
1501                           const struct ieee80211_mgmt *mgmt, size_t len,
1502                           struct hostapd_frame_info *fi)
1503 {
1504         struct ieee802_11_elems elems;
1505
1506         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
1507                 printf("handle_beacon - too short payload (len=%lu)\n",
1508                        (unsigned long) len);
1509                 return;
1510         }
1511
1512         (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
1513                                       len - (IEEE80211_HDRLEN +
1514                                              sizeof(mgmt->u.beacon)), &elems,
1515                                       0);
1516
1517         ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
1518 }
1519
1520
1521 #ifdef CONFIG_IEEE80211W
1522
1523 static void hostapd_sa_query_action(struct hostapd_data *hapd,
1524                                     const struct ieee80211_mgmt *mgmt,
1525                                     size_t len)
1526 {
1527         const u8 *end;
1528
1529         end = mgmt->u.action.u.sa_query_resp.trans_id +
1530                 WLAN_SA_QUERY_TR_ID_LEN;
1531         if (((u8 *) mgmt) + len < end) {
1532                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action "
1533                            "frame (len=%lu)", (unsigned long) len);
1534                 return;
1535         }
1536
1537         ieee802_11_sa_query_action(hapd, mgmt->sa,
1538                                    mgmt->u.action.u.sa_query_resp.action,
1539                                    mgmt->u.action.u.sa_query_resp.trans_id);
1540 }
1541
1542
1543 static int robust_action_frame(u8 category)
1544 {
1545         return category != WLAN_ACTION_PUBLIC &&
1546                 category != WLAN_ACTION_HT;
1547 }
1548 #endif /* CONFIG_IEEE80211W */
1549
1550
1551 #ifdef CONFIG_WNM
1552 static void hostapd_wnm_action(struct hostapd_data *hapd, struct sta_info *sta,
1553                                const struct ieee80211_mgmt *mgmt,
1554                                size_t len)
1555 {
1556         struct rx_action action;
1557         if (len < IEEE80211_HDRLEN + 2)
1558                 return;
1559         os_memset(&action, 0, sizeof(action));
1560         action.da = mgmt->da;
1561         action.sa = mgmt->sa;
1562         action.bssid = mgmt->bssid;
1563         action.category = mgmt->u.action.category;
1564         action.data = (const u8 *) &mgmt->u.action.u.wnm_sleep_req.action;
1565         action.len = len - IEEE80211_HDRLEN - 1;
1566         action.freq = hapd->iface->freq;
1567         ieee802_11_rx_wnm_action_ap(hapd, &action);
1568 }
1569 #endif /* CONFIG_WNM */
1570
1571
1572 static void handle_action(struct hostapd_data *hapd,
1573                           const struct ieee80211_mgmt *mgmt, size_t len)
1574 {
1575         struct sta_info *sta;
1576         sta = ap_get_sta(hapd, mgmt->sa);
1577
1578         if (len < IEEE80211_HDRLEN + 1) {
1579                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1580                                HOSTAPD_LEVEL_DEBUG,
1581                                "handle_action - too short payload (len=%lu)",
1582                                (unsigned long) len);
1583                 return;
1584         }
1585
1586         if (mgmt->u.action.category != WLAN_ACTION_PUBLIC &&
1587             (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))) {
1588                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored Action "
1589                            "frame (category=%u) from unassociated STA " MACSTR,
1590                            MAC2STR(mgmt->sa), mgmt->u.action.category);
1591                 return;
1592         }
1593
1594 #ifdef CONFIG_IEEE80211W
1595         if (sta && (sta->flags & WLAN_STA_MFP) &&
1596             !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP) &&
1597               robust_action_frame(mgmt->u.action.category))) {
1598                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1599                                HOSTAPD_LEVEL_DEBUG,
1600                                "Dropped unprotected Robust Action frame from "
1601                                "an MFP STA");
1602                 return;
1603         }
1604 #endif /* CONFIG_IEEE80211W */
1605
1606         switch (mgmt->u.action.category) {
1607 #ifdef CONFIG_IEEE80211R
1608         case WLAN_ACTION_FT:
1609                 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
1610                                      len - IEEE80211_HDRLEN))
1611                         break;
1612                 return;
1613 #endif /* CONFIG_IEEE80211R */
1614         case WLAN_ACTION_WMM:
1615                 hostapd_wmm_action(hapd, mgmt, len);
1616                 return;
1617 #ifdef CONFIG_IEEE80211W
1618         case WLAN_ACTION_SA_QUERY:
1619                 hostapd_sa_query_action(hapd, mgmt, len);
1620                 return;
1621 #endif /* CONFIG_IEEE80211W */
1622 #ifdef CONFIG_WNM
1623         case WLAN_ACTION_WNM:
1624                 hostapd_wnm_action(hapd, sta, mgmt, len);
1625                 return;
1626 #endif /* CONFIG_WNM */
1627         case WLAN_ACTION_PUBLIC:
1628                 if (hapd->public_action_cb) {
1629                         hapd->public_action_cb(hapd->public_action_cb_ctx,
1630                                                (u8 *) mgmt, len,
1631                                                hapd->iface->freq);
1632                 }
1633                 if (hapd->public_action_cb2) {
1634                         hapd->public_action_cb2(hapd->public_action_cb2_ctx,
1635                                                 (u8 *) mgmt, len,
1636                                                 hapd->iface->freq);
1637                 }
1638                 if (hapd->public_action_cb || hapd->public_action_cb2)
1639                         return;
1640                 break;
1641         case WLAN_ACTION_VENDOR_SPECIFIC:
1642                 if (hapd->vendor_action_cb) {
1643                         if (hapd->vendor_action_cb(hapd->vendor_action_cb_ctx,
1644                                                    (u8 *) mgmt, len,
1645                                                    hapd->iface->freq) == 0)
1646                                 return;
1647                 }
1648                 break;
1649         }
1650
1651         hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1652                        HOSTAPD_LEVEL_DEBUG,
1653                        "handle_action - unknown action category %d or invalid "
1654                        "frame",
1655                        mgmt->u.action.category);
1656         if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
1657             !(mgmt->sa[0] & 0x01)) {
1658                 struct ieee80211_mgmt *resp;
1659
1660                 /*
1661                  * IEEE 802.11-REVma/D9.0 - 7.3.1.11
1662                  * Return the Action frame to the source without change
1663                  * except that MSB of the Category set to 1.
1664                  */
1665                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
1666                            "frame back to sender");
1667                 resp = os_malloc(len);
1668                 if (resp == NULL)
1669                         return;
1670                 os_memcpy(resp, mgmt, len);
1671                 os_memcpy(resp->da, resp->sa, ETH_ALEN);
1672                 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
1673                 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
1674                 resp->u.action.category |= 0x80;
1675
1676                 if (hostapd_drv_send_mlme(hapd, resp, len, 0) < 0) {
1677                         wpa_printf(MSG_ERROR, "IEEE 802.11: Failed to send "
1678                                    "Action frame");
1679                 }
1680                 os_free(resp);
1681         }
1682 }
1683
1684
1685 /**
1686  * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
1687  * @hapd: hostapd BSS data structure (the BSS to which the management frame was
1688  * sent to)
1689  * @buf: management frame data (starting from IEEE 802.11 header)
1690  * @len: length of frame data in octets
1691  * @fi: meta data about received frame (signal level, etc.)
1692  *
1693  * Process all incoming IEEE 802.11 management frames. This will be called for
1694  * each frame received from the kernel driver through wlan#ap interface. In
1695  * addition, it can be called to re-inserted pending frames (e.g., when using
1696  * external RADIUS server as an MAC ACL).
1697  */
1698 void ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len,
1699                      struct hostapd_frame_info *fi)
1700 {
1701         struct ieee80211_mgmt *mgmt;
1702         int broadcast;
1703         u16 fc, stype;
1704
1705         if (len < 24)
1706                 return;
1707
1708         mgmt = (struct ieee80211_mgmt *) buf;
1709         fc = le_to_host16(mgmt->frame_control);
1710         stype = WLAN_FC_GET_STYPE(fc);
1711
1712         if (stype == WLAN_FC_STYPE_BEACON) {
1713                 handle_beacon(hapd, mgmt, len, fi);
1714                 return;
1715         }
1716
1717         broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
1718                 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
1719                 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
1720
1721         if (!broadcast &&
1722 #ifdef CONFIG_P2P
1723             /* Invitation responses can be sent with the peer MAC as BSSID */
1724             !((hapd->conf->p2p & P2P_GROUP_OWNER) &&
1725               stype == WLAN_FC_STYPE_ACTION) &&
1726 #endif /* CONFIG_P2P */
1727             os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
1728                 printf("MGMT: BSSID=" MACSTR " not our address\n",
1729                        MAC2STR(mgmt->bssid));
1730                 return;
1731         }
1732
1733
1734         if (stype == WLAN_FC_STYPE_PROBE_REQ) {
1735                 handle_probe_req(hapd, mgmt, len, fi->ssi_signal);
1736                 return;
1737         }
1738
1739         if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
1740                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1741                                HOSTAPD_LEVEL_DEBUG,
1742                                "MGMT: DA=" MACSTR " not our address",
1743                                MAC2STR(mgmt->da));
1744                 return;
1745         }
1746
1747         switch (stype) {
1748         case WLAN_FC_STYPE_AUTH:
1749                 wpa_printf(MSG_DEBUG, "mgmt::auth");
1750                 handle_auth(hapd, mgmt, len);
1751                 break;
1752         case WLAN_FC_STYPE_ASSOC_REQ:
1753                 wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
1754                 handle_assoc(hapd, mgmt, len, 0);
1755                 break;
1756         case WLAN_FC_STYPE_REASSOC_REQ:
1757                 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
1758                 handle_assoc(hapd, mgmt, len, 1);
1759                 break;
1760         case WLAN_FC_STYPE_DISASSOC:
1761                 wpa_printf(MSG_DEBUG, "mgmt::disassoc");
1762                 handle_disassoc(hapd, mgmt, len);
1763                 break;
1764         case WLAN_FC_STYPE_DEAUTH:
1765                 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "mgmt::deauth");
1766                 handle_deauth(hapd, mgmt, len);
1767                 break;
1768         case WLAN_FC_STYPE_ACTION:
1769                 wpa_printf(MSG_DEBUG, "mgmt::action");
1770                 handle_action(hapd, mgmt, len);
1771                 break;
1772         default:
1773                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1774                                HOSTAPD_LEVEL_DEBUG,
1775                                "unknown mgmt frame subtype %d", stype);
1776                 break;
1777         }
1778 }
1779
1780
1781 static void handle_auth_cb(struct hostapd_data *hapd,
1782                            const struct ieee80211_mgmt *mgmt,
1783                            size_t len, int ok)
1784 {
1785         u16 auth_alg, auth_transaction, status_code;
1786         struct sta_info *sta;
1787
1788         if (!ok) {
1789                 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1790                                HOSTAPD_LEVEL_NOTICE,
1791                                "did not acknowledge authentication response");
1792                 return;
1793         }
1794
1795         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
1796                 printf("handle_auth_cb - too short payload (len=%lu)\n",
1797                        (unsigned long) len);
1798                 return;
1799         }
1800
1801         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1802         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1803         status_code = le_to_host16(mgmt->u.auth.status_code);
1804
1805         sta = ap_get_sta(hapd, mgmt->da);
1806         if (!sta) {
1807                 printf("handle_auth_cb: STA " MACSTR " not found\n",
1808                        MAC2STR(mgmt->da));
1809                 return;
1810         }
1811
1812         if (status_code == WLAN_STATUS_SUCCESS &&
1813             ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
1814              (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
1815                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1816                                HOSTAPD_LEVEL_INFO, "authenticated");
1817                 sta->flags |= WLAN_STA_AUTH;
1818         }
1819 }
1820
1821
1822 static void handle_assoc_cb(struct hostapd_data *hapd,
1823                             const struct ieee80211_mgmt *mgmt,
1824                             size_t len, int reassoc, int ok)
1825 {
1826         u16 status;
1827         struct sta_info *sta;
1828         int new_assoc = 1;
1829         struct ieee80211_ht_capabilities ht_cap;
1830         struct ieee80211_vht_capabilities vht_cap;
1831
1832         if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
1833                                       sizeof(mgmt->u.assoc_resp))) {
1834                 printf("handle_assoc_cb(reassoc=%d) - too short payload "
1835                        "(len=%lu)\n", reassoc, (unsigned long) len);
1836                 return;
1837         }
1838
1839         sta = ap_get_sta(hapd, mgmt->da);
1840         if (!sta) {
1841                 printf("handle_assoc_cb: STA " MACSTR " not found\n",
1842                        MAC2STR(mgmt->da));
1843                 return;
1844         }
1845
1846         if (!ok) {
1847                 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1848                                HOSTAPD_LEVEL_DEBUG,
1849                                "did not acknowledge association response");
1850                 sta->flags &= ~WLAN_STA_ASSOC_REQ_OK;
1851                 return;
1852         }
1853
1854         if (reassoc)
1855                 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
1856         else
1857                 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1858
1859         if (status != WLAN_STATUS_SUCCESS)
1860                 goto fail;
1861
1862         /* Stop previous accounting session, if one is started, and allocate
1863          * new session id for the new session. */
1864         accounting_sta_stop(hapd, sta);
1865
1866         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1867                        HOSTAPD_LEVEL_INFO,
1868                        "associated (aid %d)",
1869                        sta->aid);
1870
1871         if (sta->flags & WLAN_STA_ASSOC)
1872                 new_assoc = 0;
1873         sta->flags |= WLAN_STA_ASSOC;
1874         if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa) ||
1875             sta->auth_alg == WLAN_AUTH_FT) {
1876                 /*
1877                  * Open, static WEP, or FT protocol; no separate authorization
1878                  * step.
1879                  */
1880                 ap_sta_set_authorized(hapd, sta, 1);
1881         }
1882
1883         if (reassoc)
1884                 mlme_reassociate_indication(hapd, sta);
1885         else
1886                 mlme_associate_indication(hapd, sta);
1887
1888 #ifdef CONFIG_IEEE80211W
1889         sta->sa_query_timed_out = 0;
1890 #endif /* CONFIG_IEEE80211W */
1891
1892         /*
1893          * Remove the STA entry in order to make sure the STA PS state gets
1894          * cleared and configuration gets updated in case of reassociation back
1895          * to the same AP.
1896          */
1897         hostapd_drv_sta_remove(hapd, sta->addr);
1898
1899 #ifdef CONFIG_IEEE80211N
1900         if (sta->flags & WLAN_STA_HT)
1901                 hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap);
1902 #endif /* CONFIG_IEEE80211N */
1903 #ifdef CONFIG_IEEE80211AC
1904         if (sta->flags & WLAN_STA_VHT)
1905                 hostapd_get_vht_capab(hapd, sta->vht_capabilities, &vht_cap);
1906 #endif /* CONFIG_IEEE80211AC */
1907
1908         if (hostapd_sta_add(hapd, sta->addr, sta->aid, sta->capability,
1909                             sta->supported_rates, sta->supported_rates_len,
1910                             sta->listen_interval,
1911                             sta->flags & WLAN_STA_HT ? &ht_cap : NULL,
1912                             sta->flags & WLAN_STA_VHT ? &vht_cap : NULL,
1913                             sta->flags, sta->qosinfo)) {
1914                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1915                                HOSTAPD_LEVEL_NOTICE,
1916                                "Could not add STA to kernel driver");
1917
1918                 ap_sta_disconnect(hapd, sta, sta->addr,
1919                                   WLAN_REASON_DISASSOC_AP_BUSY);
1920
1921                 goto fail;
1922         }
1923
1924         if (sta->flags & WLAN_STA_WDS)
1925                 hostapd_set_wds_sta(hapd, sta->addr, sta->aid, 1);
1926
1927         if (sta->eapol_sm == NULL) {
1928                 /*
1929                  * This STA does not use RADIUS server for EAP authentication,
1930                  * so bind it to the selected VLAN interface now, since the
1931                  * interface selection is not going to change anymore.
1932                  */
1933                 if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
1934                         goto fail;
1935         } else if (sta->vlan_id) {
1936                 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
1937                 if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
1938                         goto fail;
1939         }
1940
1941         hostapd_set_sta_flags(hapd, sta);
1942
1943         if (sta->auth_alg == WLAN_AUTH_FT)
1944                 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
1945         else
1946                 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
1947         hapd->new_assoc_sta_cb(hapd, sta, !new_assoc);
1948
1949         ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
1950
1951  fail:
1952         /* Copy of the association request is not needed anymore */
1953         if (sta->last_assoc_req) {
1954                 os_free(sta->last_assoc_req);
1955                 sta->last_assoc_req = NULL;
1956         }
1957 }
1958
1959
1960 static void handle_deauth_cb(struct hostapd_data *hapd,
1961                              const struct ieee80211_mgmt *mgmt,
1962                              size_t len, int ok)
1963 {
1964         struct sta_info *sta;
1965         if (mgmt->da[0] & 0x01)
1966                 return;
1967         sta = ap_get_sta(hapd, mgmt->da);
1968         if (!sta) {
1969                 wpa_printf(MSG_DEBUG, "handle_deauth_cb: STA " MACSTR
1970                            " not found", MAC2STR(mgmt->da));
1971                 return;
1972         }
1973         if (ok)
1974                 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged deauth",
1975                            MAC2STR(sta->addr));
1976         else
1977                 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
1978                            "deauth", MAC2STR(sta->addr));
1979
1980         ap_sta_deauth_cb(hapd, sta);
1981 }
1982
1983
1984 static void handle_disassoc_cb(struct hostapd_data *hapd,
1985                                const struct ieee80211_mgmt *mgmt,
1986                                size_t len, int ok)
1987 {
1988         struct sta_info *sta;
1989         if (mgmt->da[0] & 0x01)
1990                 return;
1991         sta = ap_get_sta(hapd, mgmt->da);
1992         if (!sta) {
1993                 wpa_printf(MSG_DEBUG, "handle_disassoc_cb: STA " MACSTR
1994                            " not found", MAC2STR(mgmt->da));
1995                 return;
1996         }
1997         if (ok)
1998                 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged disassoc",
1999                            MAC2STR(sta->addr));
2000         else
2001                 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
2002                            "disassoc", MAC2STR(sta->addr));
2003
2004         ap_sta_disassoc_cb(hapd, sta);
2005 }
2006
2007
2008 /**
2009  * ieee802_11_mgmt_cb - Process management frame TX status callback
2010  * @hapd: hostapd BSS data structure (the BSS from which the management frame
2011  * was sent from)
2012  * @buf: management frame data (starting from IEEE 802.11 header)
2013  * @len: length of frame data in octets
2014  * @stype: management frame subtype from frame control field
2015  * @ok: Whether the frame was ACK'ed
2016  */
2017 void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len,
2018                         u16 stype, int ok)
2019 {
2020         const struct ieee80211_mgmt *mgmt;
2021         mgmt = (const struct ieee80211_mgmt *) buf;
2022
2023         switch (stype) {
2024         case WLAN_FC_STYPE_AUTH:
2025                 wpa_printf(MSG_DEBUG, "mgmt::auth cb");
2026                 handle_auth_cb(hapd, mgmt, len, ok);
2027                 break;
2028         case WLAN_FC_STYPE_ASSOC_RESP:
2029                 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
2030                 handle_assoc_cb(hapd, mgmt, len, 0, ok);
2031                 break;
2032         case WLAN_FC_STYPE_REASSOC_RESP:
2033                 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
2034                 handle_assoc_cb(hapd, mgmt, len, 1, ok);
2035                 break;
2036         case WLAN_FC_STYPE_PROBE_RESP:
2037                 wpa_printf(MSG_EXCESSIVE, "mgmt::proberesp cb");
2038                 break;
2039         case WLAN_FC_STYPE_DEAUTH:
2040                 wpa_printf(MSG_DEBUG, "mgmt::deauth cb");
2041                 handle_deauth_cb(hapd, mgmt, len, ok);
2042                 break;
2043         case WLAN_FC_STYPE_DISASSOC:
2044                 wpa_printf(MSG_DEBUG, "mgmt::disassoc cb");
2045                 handle_disassoc_cb(hapd, mgmt, len, ok);
2046                 break;
2047         case WLAN_FC_STYPE_ACTION:
2048                 wpa_printf(MSG_DEBUG, "mgmt::action cb");
2049                 break;
2050         default:
2051                 printf("unknown mgmt cb frame subtype %d\n", stype);
2052                 break;
2053         }
2054 }
2055
2056
2057 int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
2058 {
2059         /* TODO */
2060         return 0;
2061 }
2062
2063
2064 int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
2065                            char *buf, size_t buflen)
2066 {
2067         /* TODO */
2068         return 0;
2069 }
2070
2071
2072 void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
2073                        const u8 *buf, size_t len, int ack)
2074 {
2075         struct sta_info *sta;
2076         struct hostapd_iface *iface = hapd->iface;
2077
2078         sta = ap_get_sta(hapd, addr);
2079         if (sta == NULL && iface->num_bss > 1) {
2080                 size_t j;
2081                 for (j = 0; j < iface->num_bss; j++) {
2082                         hapd = iface->bss[j];
2083                         sta = ap_get_sta(hapd, addr);
2084                         if (sta)
2085                                 break;
2086                 }
2087         }
2088         if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))
2089                 return;
2090         if (sta->flags & WLAN_STA_PENDING_POLL) {
2091                 wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
2092                            "activity poll", MAC2STR(sta->addr),
2093                            ack ? "ACKed" : "did not ACK");
2094                 if (ack)
2095                         sta->flags &= ~WLAN_STA_PENDING_POLL;
2096         }
2097
2098         ieee802_1x_tx_status(hapd, sta, buf, len, ack);
2099 }
2100
2101
2102 void hostapd_eapol_tx_status(struct hostapd_data *hapd, const u8 *dst,
2103                              const u8 *data, size_t len, int ack)
2104 {
2105         struct sta_info *sta;
2106         struct hostapd_iface *iface = hapd->iface;
2107
2108         sta = ap_get_sta(hapd, dst);
2109         if (sta == NULL && iface->num_bss > 1) {
2110                 size_t j;
2111                 for (j = 0; j < iface->num_bss; j++) {
2112                         hapd = iface->bss[j];
2113                         sta = ap_get_sta(hapd, dst);
2114                         if (sta)
2115                                 break;
2116                 }
2117         }
2118         if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
2119                 wpa_printf(MSG_DEBUG, "Ignore TX status for Data frame to STA "
2120                            MACSTR " that is not currently associated",
2121                            MAC2STR(dst));
2122                 return;
2123         }
2124
2125         ieee802_1x_eapol_tx_status(hapd, sta, data, len, ack);
2126 }
2127
2128
2129 void hostapd_client_poll_ok(struct hostapd_data *hapd, const u8 *addr)
2130 {
2131         struct sta_info *sta;
2132         struct hostapd_iface *iface = hapd->iface;
2133
2134         sta = ap_get_sta(hapd, addr);
2135         if (sta == NULL && iface->num_bss > 1) {
2136                 size_t j;
2137                 for (j = 0; j < iface->num_bss; j++) {
2138                         hapd = iface->bss[j];
2139                         sta = ap_get_sta(hapd, addr);
2140                         if (sta)
2141                                 break;
2142                 }
2143         }
2144         if (sta == NULL)
2145                 return;
2146         if (!(sta->flags & WLAN_STA_PENDING_POLL))
2147                 return;
2148
2149         wpa_printf(MSG_DEBUG, "STA " MACSTR " ACKed pending "
2150                    "activity poll", MAC2STR(sta->addr));
2151         sta->flags &= ~WLAN_STA_PENDING_POLL;
2152 }
2153
2154
2155 void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src,
2156                                 int wds)
2157 {
2158         struct sta_info *sta;
2159
2160         sta = ap_get_sta(hapd, src);
2161         if (sta && (sta->flags & WLAN_STA_ASSOC)) {
2162                 if (!hapd->conf->wds_sta)
2163                         return;
2164
2165                 if (wds && !(sta->flags & WLAN_STA_WDS)) {
2166                         wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for "
2167                                    "STA " MACSTR " (aid %u)",
2168                                    MAC2STR(sta->addr), sta->aid);
2169                         sta->flags |= WLAN_STA_WDS;
2170                         hostapd_set_wds_sta(hapd, sta->addr, sta->aid, 1);
2171                 }
2172                 return;
2173         }
2174
2175         wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA "
2176                    MACSTR, MAC2STR(src));
2177         if (src[0] & 0x01) {
2178                 /* Broadcast bit set in SA?! Ignore the frame silently. */
2179                 return;
2180         }
2181
2182         if (sta && (sta->flags & WLAN_STA_ASSOC_REQ_OK)) {
2183                 wpa_printf(MSG_DEBUG, "Association Response to the STA has "
2184                            "already been sent, but no TX status yet known - "
2185                            "ignore Class 3 frame issue with " MACSTR,
2186                            MAC2STR(src));
2187                 return;
2188         }
2189
2190         if (sta && (sta->flags & WLAN_STA_AUTH))
2191                 hostapd_drv_sta_disassoc(
2192                         hapd, src,
2193                         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
2194         else
2195                 hostapd_drv_sta_deauth(
2196                         hapd, src,
2197                         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
2198 }
2199
2200
2201 #endif /* CONFIG_NATIVE_WINDOWS */