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_AP_UNABLE_TO_HANDLE_NEW_STA;
 649                 goto fail;
 650         }
 651
 652         if (vlan_id > 0) {
 653                 if (!hostapd_vlan_id_valid(hapd->conf->vlan, vlan_id)) {
 654                         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
 655                                        HOSTAPD_LEVEL_INFO, "Invalid VLAN ID "
 656                                        "%d received from RADIUS server",
 657                                        vlan_id);
 658                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 659                         goto fail;
 660                 }
 661                 sta->vlan_id = vlan_id;
 662                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
 663                                HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
 664         }
 665
 666         hostapd_free_psk_list(sta->psk);
 667         if (hapd->conf->wpa_psk_radius != PSK_RADIUS_IGNORED) {
 668                 sta->psk = psk;
 669                 psk = NULL;
 670         } else {
 671                 sta->psk = NULL;
 672         }
 673
 674         sta->identity = identity;
 675         identity = NULL;
 676         sta->radius_cui = radius_cui;
 677         radius_cui = NULL;
 678
 679         sta->flags &= ~WLAN_STA_PREAUTH;
 680         ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
 681
 682         if (hapd->conf->acct_interim_interval == 0 && acct_interim_interval)
 683                 sta->acct_interim_interval = acct_interim_interval;
 684         if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
 685                 ap_sta_session_timeout(hapd, sta, session_timeout);
 686         else
 687                 ap_sta_no_session_timeout(hapd, sta);
 688
 689         switch (auth_alg) {
 690         case WLAN_AUTH_OPEN:
 691                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 692                                HOSTAPD_LEVEL_DEBUG,
 693                                "authentication OK (open system)");
 694 #ifdef IEEE80211_REQUIRE_AUTH_ACK
 695                 /* Station will be marked authenticated if it ACKs the
 696                  * authentication reply. */
 697 #else
 698                 sta->flags |= WLAN_STA_AUTH;
 699                 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
 700                 sta->auth_alg = WLAN_AUTH_OPEN;
 701                 mlme_authenticate_indication(hapd, sta);
 702 #endif
 703                 break;
 704         case WLAN_AUTH_SHARED_KEY:
 705                 resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
 706                                        fc & WLAN_FC_ISWEP);
 707                 sta->auth_alg = WLAN_AUTH_SHARED_KEY;
 708                 mlme_authenticate_indication(hapd, sta);
 709                 if (sta->challenge && auth_transaction == 1) {
 710                         resp_ies[0] = WLAN_EID_CHALLENGE;
 711                         resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
 712                         os_memcpy(resp_ies + 2, sta->challenge,
 713                                   WLAN_AUTH_CHALLENGE_LEN);
 714                         resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
 715                 }
 716                 break;
 717 #ifdef CONFIG_IEEE80211R
 718         case WLAN_AUTH_FT:
 719                 sta->auth_alg = WLAN_AUTH_FT;
 720                 if (sta->wpa_sm == NULL)
 721                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
 722                                                         sta->addr);
 723                 if (sta->wpa_sm == NULL) {
 724                         wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
 725                                    "state machine");
 726                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 727                         goto fail;
 728                 }
 729                 wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
 730                                     auth_transaction, mgmt->u.auth.variable,
 731                                     len - IEEE80211_HDRLEN -
 732                                     sizeof(mgmt->u.auth),
 733                                     handle_auth_ft_finish, hapd);
 734                 /* handle_auth_ft_finish() callback will complete auth. */
 735                 return;
 736 #endif /* CONFIG_IEEE80211R */
 737 #ifdef CONFIG_SAE
 738         case WLAN_AUTH_SAE:
 739                 handle_auth_sae(hapd, sta, mgmt, len, auth_transaction);
 740                 return;
 741 #endif /* CONFIG_SAE */
 742         }
 743
 744  fail:
 745         os_free(identity);
 746         os_free(radius_cui);
 747         hostapd_free_psk_list(psk);
 748
 749         send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
 750                         auth_transaction + 1, resp, resp_ies, resp_ies_len);
 751 }
 752
 753
 754 static int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta)
 755 {
 756         int i, j = 32, aid;
 757
 758         /* get a unique AID */
 759         if (sta->aid > 0) {
 760                 wpa_printf(MSG_DEBUG, "  old AID %d", sta->aid);
 761                 return 0;
 762         }
 763
 764         for (i = 0; i < AID_WORDS; i++) {
 765                 if (hapd->sta_aid[i] == (u32) -1)
 766                         continue;
 767                 for (j = 0; j < 32; j++) {
 768                         if (!(hapd->sta_aid[i] & BIT(j)))
 769                                 break;
 770                 }
 771                 if (j < 32)
 772                         break;
 773         }
 774         if (j == 32)
 775                 return -1;
 776         aid = i * 32 + j + 1;
 777         if (aid > 2007)
 778                 return -1;
 779
 780         sta->aid = aid;
 781         hapd->sta_aid[i] |= BIT(j);
 782         wpa_printf(MSG_DEBUG, "  new AID %d", sta->aid);
 783         return 0;
 784 }
 785
 786
 787 static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta,
 788                       const u8 *ssid_ie, size_t ssid_ie_len)
 789 {
 790         if (ssid_ie == NULL)
 791                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 792
 793         if (ssid_ie_len != hapd->conf->ssid.ssid_len ||
 794             os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) {
 795                 char ssid_txt[33];
 796                 ieee802_11_print_ssid(ssid_txt, ssid_ie, ssid_ie_len);
 797                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 798                                HOSTAPD_LEVEL_INFO,
 799                                "Station tried to associate with unknown SSID "
 800                                "'%s'", ssid_txt);
 801                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 802         }
 803
 804         return WLAN_STATUS_SUCCESS;
 805 }
 806
 807
 808 static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta,
 809                      const u8 *wmm_ie, size_t wmm_ie_len)
 810 {
 811         sta->flags &= ~WLAN_STA_WMM;
 812         sta->qosinfo = 0;
 813         if (wmm_ie && hapd->conf->wmm_enabled) {
 814                 struct wmm_information_element *wmm;
 815
 816                 if (!hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len)) {
 817                         hostapd_logger(hapd, sta->addr,
 818                                        HOSTAPD_MODULE_WPA,
 819                                        HOSTAPD_LEVEL_DEBUG,
 820                                        "invalid WMM element in association "
 821                                        "request");
 822                         return WLAN_STATUS_UNSPECIFIED_FAILURE;
 823                 }
 824
 825                 sta->flags |= WLAN_STA_WMM;
 826                 wmm = (struct wmm_information_element *) wmm_ie;
 827                 sta->qosinfo = wmm->qos_info;
 828         }
 829         return WLAN_STATUS_SUCCESS;
 830 }
 831
 832
 833 static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta,
 834                            struct ieee802_11_elems *elems)
 835 {
 836         if (!elems->supp_rates) {
 837                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 838                                HOSTAPD_LEVEL_DEBUG,
 839                                "No supported rates element in AssocReq");
 840                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 841         }
 842
 843         if (elems->supp_rates_len + elems->ext_supp_rates_len >
 844             sizeof(sta->supported_rates)) {
 845                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 846                                HOSTAPD_LEVEL_DEBUG,
 847                                "Invalid supported rates element length %d+%d",
 848                                elems->supp_rates_len,
 849                                elems->ext_supp_rates_len);
 850                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 851         }
 852
 853         sta->supported_rates_len = merge_byte_arrays(
 854                 sta->supported_rates, sizeof(sta->supported_rates),
 855                 elems->supp_rates, elems->supp_rates_len,
 856                 elems->ext_supp_rates, elems->ext_supp_rates_len);
 857
 858         return WLAN_STATUS_SUCCESS;
 859 }
 860
 861
 862 static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta,
 863                            const u8 *ies, size_t ies_len, int reassoc)
 864 {
 865         struct ieee802_11_elems elems;
 866         u16 resp;
 867         const u8 *wpa_ie;
 868         size_t wpa_ie_len;
 869
 870         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) {
 871                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 872                                HOSTAPD_LEVEL_INFO, "Station sent an invalid "
 873                                "association request");
 874                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 875         }
 876
 877         resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len);
 878         if (resp != WLAN_STATUS_SUCCESS)
 879                 return resp;
 880         resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len);
 881         if (resp != WLAN_STATUS_SUCCESS)
 882                 return resp;
 883         resp = copy_supp_rates(hapd, sta, &elems);
 884         if (resp != WLAN_STATUS_SUCCESS)
 885                 return resp;
 886 #ifdef CONFIG_IEEE80211N
 887         resp = copy_sta_ht_capab(hapd, sta, elems.ht_capabilities,
 888                                  elems.ht_capabilities_len);
 889         if (resp != WLAN_STATUS_SUCCESS)
 890                 return resp;
 891         if (hapd->iconf->ieee80211n && hapd->iconf->require_ht &&
 892             !(sta->flags & WLAN_STA_HT)) {
 893                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 894                                HOSTAPD_LEVEL_INFO, "Station does not support "
 895                                "mandatory HT PHY - reject association");
 896                 return WLAN_STATUS_ASSOC_DENIED_NO_HT;
 897         }
 898 #endif /* CONFIG_IEEE80211N */
 899
 900 #ifdef CONFIG_IEEE80211AC
 901         resp = copy_sta_vht_capab(hapd, sta, elems.vht_capabilities,
 902                                   elems.vht_capabilities_len);
 903         if (resp != WLAN_STATUS_SUCCESS)
 904                 return resp;
 905         if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht &&
 906             !(sta->flags & WLAN_STA_VHT)) {
 907                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 908                                HOSTAPD_LEVEL_INFO, "Station does not support "
 909                                "mandatory VHT PHY - reject association");
 910                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 911         }
 912 #endif /* CONFIG_IEEE80211AC */
 913
 914         if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
 915                 wpa_ie = elems.rsn_ie;
 916                 wpa_ie_len = elems.rsn_ie_len;
 917         } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
 918                    elems.wpa_ie) {
 919                 wpa_ie = elems.wpa_ie;
 920                 wpa_ie_len = elems.wpa_ie_len;
 921         } else {
 922                 wpa_ie = NULL;
 923                 wpa_ie_len = 0;
 924         }
 925
 926 #ifdef CONFIG_WPS
 927         sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS | WLAN_STA_WPS2);
 928         if (hapd->conf->wps_state && elems.wps_ie) {
 929                 wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association "
 930                            "Request - assume WPS is used");
 931                 sta->flags |= WLAN_STA_WPS;
 932                 wpabuf_free(sta->wps_ie);
 933                 sta->wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
 934                                                           WPS_IE_VENDOR_TYPE);
 935                 if (sta->wps_ie && wps_is_20(sta->wps_ie)) {
 936                         wpa_printf(MSG_DEBUG, "WPS: STA supports WPS 2.0");
 937                         sta->flags |= WLAN_STA_WPS2;
 938                 }
 939                 wpa_ie = NULL;
 940                 wpa_ie_len = 0;
 941                 if (sta->wps_ie && wps_validate_assoc_req(sta->wps_ie) < 0) {
 942                         wpa_printf(MSG_DEBUG, "WPS: Invalid WPS IE in "
 943                                    "(Re)Association Request - reject");
 944                         return WLAN_STATUS_INVALID_IE;
 945                 }
 946         } else if (hapd->conf->wps_state && wpa_ie == NULL) {
 947                 wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE in "
 948                            "(Re)Association Request - possible WPS use");
 949                 sta->flags |= WLAN_STA_MAYBE_WPS;
 950         } else
 951 #endif /* CONFIG_WPS */
 952         if (hapd->conf->wpa && wpa_ie == NULL) {
 953                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 954                                HOSTAPD_LEVEL_INFO,
 955                                "No WPA/RSN IE in association request");
 956                 return WLAN_STATUS_INVALID_IE;
 957         }
 958
 959         if (hapd->conf->wpa && wpa_ie) {
 960                 int res;
 961                 wpa_ie -= 2;
 962                 wpa_ie_len += 2;
 963                 if (sta->wpa_sm == NULL)
 964                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
 965                                                         sta->addr);
 966                 if (sta->wpa_sm == NULL) {
 967                         wpa_printf(MSG_WARNING, "Failed to initialize WPA "
 968                                    "state machine");
 969                         return WLAN_STATUS_UNSPECIFIED_FAILURE;
 970                 }
 971                 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
 972                                           wpa_ie, wpa_ie_len,
 973                                           elems.mdie, elems.mdie_len);
 974                 if (res == WPA_INVALID_GROUP)
 975                         resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
 976                 else if (res == WPA_INVALID_PAIRWISE)
 977                         resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
 978                 else if (res == WPA_INVALID_AKMP)
 979                         resp = WLAN_STATUS_AKMP_NOT_VALID;
 980                 else if (res == WPA_ALLOC_FAIL)
 981                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 982 #ifdef CONFIG_IEEE80211W
 983                 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
 984                         resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
 985                 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
 986                         resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
 987 #endif /* CONFIG_IEEE80211W */
 988                 else if (res == WPA_INVALID_MDIE)
 989                         resp = WLAN_STATUS_INVALID_MDIE;
 990                 else if (res != WPA_IE_OK)
 991                         resp = WLAN_STATUS_INVALID_IE;
 992                 if (resp != WLAN_STATUS_SUCCESS)
 993                         return resp;
 994 #ifdef CONFIG_IEEE80211W
 995                 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
 996                     sta->sa_query_count > 0)
 997                         ap_check_sa_query_timeout(hapd, sta);
 998                 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
 999                     (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) {
1000                         /*
1001                          * STA has already been associated with MFP and SA
1002                          * Query timeout has not been reached. Reject the
1003                          * association attempt temporarily and start SA Query,
1004                          * if one is not pending.
1005                          */
1006
1007                         if (sta->sa_query_count == 0)
1008                                 ap_sta_start_sa_query(hapd, sta);
1009
1010                         return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
1011                 }
1012
1013                 if (wpa_auth_uses_mfp(sta->wpa_sm))
1014                         sta->flags |= WLAN_STA_MFP;
1015                 else
1016                         sta->flags &= ~WLAN_STA_MFP;
1017 #endif /* CONFIG_IEEE80211W */
1018
1019 #ifdef CONFIG_IEEE80211R
1020                 if (sta->auth_alg == WLAN_AUTH_FT) {
1021                         if (!reassoc) {
1022                                 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
1023                                            "to use association (not "
1024                                            "re-association) with FT auth_alg",
1025                                            MAC2STR(sta->addr));
1026                                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1027                         }
1028
1029                         resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies,
1030                                                        ies_len);
1031                         if (resp != WLAN_STATUS_SUCCESS)
1032                                 return resp;
1033                 }
1034 #endif /* CONFIG_IEEE80211R */
1035
1036 #ifdef CONFIG_SAE
1037                 if (wpa_auth_uses_sae(sta->wpa_sm) &&
1038                     sta->auth_alg != WLAN_AUTH_SAE) {
1039                         wpa_printf(MSG_DEBUG, "SAE: " MACSTR " tried to use "
1040                                    "SAE AKM after non-SAE auth_alg %u",
1041                                    MAC2STR(sta->addr), sta->auth_alg);
1042                         return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1043                 }
1044 #endif /* CONFIG_SAE */
1045
1046 #ifdef CONFIG_IEEE80211N
1047                 if ((sta->flags & (WLAN_STA_HT | WLAN_STA_VHT)) &&
1048                     wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
1049                         hostapd_logger(hapd, sta->addr,
1050                                        HOSTAPD_MODULE_IEEE80211,
1051                                        HOSTAPD_LEVEL_INFO,
1052                                        "Station tried to use TKIP with HT "
1053                                        "association");
1054                         return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
1055                 }
1056 #endif /* CONFIG_IEEE80211N */
1057         } else
1058                 wpa_auth_sta_no_wpa(sta->wpa_sm);
1059
1060 #ifdef CONFIG_P2P
1061         if (elems.p2p) {
1062                 wpabuf_free(sta->p2p_ie);
1063                 sta->p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
1064                                                           P2P_IE_VENDOR_TYPE);
1065
1066         } else {
1067                 wpabuf_free(sta->p2p_ie);
1068                 sta->p2p_ie = NULL;
1069         }
1070
1071         p2p_group_notif_assoc(hapd->p2p_group, sta->addr, ies, ies_len);
1072 #endif /* CONFIG_P2P */
1073
1074 #ifdef CONFIG_HS20
1075         wpabuf_free(sta->hs20_ie);
1076         if (elems.hs20 && elems.hs20_len > 4) {
1077                 sta->hs20_ie = wpabuf_alloc_copy(elems.hs20 + 4,
1078                                                  elems.hs20_len - 4);
1079         } else
1080                 sta->hs20_ie = NULL;
1081 #endif /* CONFIG_HS20 */
1082
1083         return WLAN_STATUS_SUCCESS;
1084 }
1085
1086
1087 static void send_deauth(struct hostapd_data *hapd, const u8 *addr,
1088                         u16 reason_code)
1089 {
1090         int send_len;
1091         struct ieee80211_mgmt reply;
1092
1093         os_memset(&reply, 0, sizeof(reply));
1094         reply.frame_control =
1095                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH);
1096         os_memcpy(reply.da, addr, ETH_ALEN);
1097         os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN);
1098         os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN);
1099
1100         send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth);
1101         reply.u.deauth.reason_code = host_to_le16(reason_code);
1102
1103         if (hostapd_drv_send_mlme(hapd, &reply, send_len, 0) < 0)
1104                 wpa_printf(MSG_INFO, "Failed to send deauth: %s",
1105                            strerror(errno));
1106 }
1107
1108
1109 static void send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta,
1110                             u16 status_code, int reassoc, const u8 *ies,
1111                             size_t ies_len)
1112 {
1113         int send_len;
1114         u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
1115         struct ieee80211_mgmt *reply;
1116         u8 *p;
1117
1118         os_memset(buf, 0, sizeof(buf));
1119         reply = (struct ieee80211_mgmt *) buf;
1120         reply->frame_control =
1121                 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1122                              (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
1123                               WLAN_FC_STYPE_ASSOC_RESP));
1124         os_memcpy(reply->da, sta->addr, ETH_ALEN);
1125         os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
1126         os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN);
1127
1128         send_len = IEEE80211_HDRLEN;
1129         send_len += sizeof(reply->u.assoc_resp);
1130         reply->u.assoc_resp.capab_info =
1131                 host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
1132         reply->u.assoc_resp.status_code = host_to_le16(status_code);
1133         reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
1134                                                | BIT(14) | BIT(15));
1135         /* Supported rates */
1136         p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
1137         /* Extended supported rates */
1138         p = hostapd_eid_ext_supp_rates(hapd, p);
1139
1140 #ifdef CONFIG_IEEE80211R
1141         if (status_code == WLAN_STATUS_SUCCESS) {
1142                 /* IEEE 802.11r: Mobility Domain Information, Fast BSS
1143                  * Transition Information, RSN, [RIC Response] */
1144                 p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
1145                                                 buf + sizeof(buf) - p,
1146                                                 sta->auth_alg, ies, ies_len);
1147         }
1148 #endif /* CONFIG_IEEE80211R */
1149
1150 #ifdef CONFIG_IEEE80211W
1151         if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
1152                 p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
1153 #endif /* CONFIG_IEEE80211W */
1154
1155 #ifdef CONFIG_IEEE80211N
1156         p = hostapd_eid_ht_capabilities(hapd, p);
1157         p = hostapd_eid_ht_operation(hapd, p);
1158 #endif /* CONFIG_IEEE80211N */
1159
1160 #ifdef CONFIG_IEEE80211AC
1161         p = hostapd_eid_vht_capabilities(hapd, p);
1162         p = hostapd_eid_vht_operation(hapd, p);
1163 #endif /* CONFIG_IEEE80211AC */
1164
1165         p = hostapd_eid_ext_capab(hapd, p);
1166         p = hostapd_eid_bss_max_idle_period(hapd, p);
1167
1168         if (sta->flags & WLAN_STA_WMM)
1169                 p = hostapd_eid_wmm(hapd, p);
1170
1171 #ifdef CONFIG_WPS
1172         if ((sta->flags & WLAN_STA_WPS) ||
1173             ((sta->flags & WLAN_STA_MAYBE_WPS) && hapd->conf->wpa)) {
1174                 struct wpabuf *wps = wps_build_assoc_resp_ie();
1175                 if (wps) {
1176                         os_memcpy(p, wpabuf_head(wps), wpabuf_len(wps));
1177                         p += wpabuf_len(wps);
1178                         wpabuf_free(wps);
1179                 }
1180         }
1181 #endif /* CONFIG_WPS */
1182
1183 #ifdef CONFIG_P2P
1184         if (sta->p2p_ie) {
1185                 struct wpabuf *p2p_resp_ie;
1186                 enum p2p_status_code status;
1187                 switch (status_code) {
1188                 case WLAN_STATUS_SUCCESS:
1189                         status = P2P_SC_SUCCESS;
1190                         break;
1191                 case WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA:
1192                         status = P2P_SC_FAIL_LIMIT_REACHED;
1193                         break;
1194                 default:
1195                         status = P2P_SC_FAIL_INVALID_PARAMS;
1196                         break;
1197                 }
1198                 p2p_resp_ie = p2p_group_assoc_resp_ie(hapd->p2p_group, status);
1199                 if (p2p_resp_ie) {
1200                         os_memcpy(p, wpabuf_head(p2p_resp_ie),
1201                                   wpabuf_len(p2p_resp_ie));
1202                         p += wpabuf_len(p2p_resp_ie);
1203                         wpabuf_free(p2p_resp_ie);
1204                 }
1205         }
1206 #endif /* CONFIG_P2P */
1207
1208 #ifdef CONFIG_P2P_MANAGER
1209         if (hapd->conf->p2p & P2P_MANAGE)
1210                 p = hostapd_eid_p2p_manage(hapd, p);
1211 #endif /* CONFIG_P2P_MANAGER */
1212
1213         send_len += p - reply->u.assoc_resp.variable;
1214
1215         if (hostapd_drv_send_mlme(hapd, reply, send_len, 0) < 0)
1216                 wpa_printf(MSG_INFO, "Failed to send assoc resp: %s",
1217                            strerror(errno));
1218 }
1219
1220
1221 static void handle_assoc(struct hostapd_data *hapd,
1222                          const struct ieee80211_mgmt *mgmt, size_t len,
1223                          int reassoc)
1224 {
1225         u16 capab_info, listen_interval;
1226         u16 resp = WLAN_STATUS_SUCCESS;
1227         const u8 *pos;
1228         int left, i;
1229         struct sta_info *sta;
1230
1231         if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
1232                                       sizeof(mgmt->u.assoc_req))) {
1233                 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
1234                        "\n", reassoc, (unsigned long) len);
1235                 return;
1236         }
1237
1238 #ifdef CONFIG_TESTING_OPTIONS
1239         if (reassoc) {
1240                 if (hapd->iconf->ignore_reassoc_probability > 0.0d &&
1241                     drand48() < hapd->iconf->ignore_reassoc_probability) {
1242                         wpa_printf(MSG_INFO,
1243                                    "TESTING: ignoring reassoc request from "
1244                                    MACSTR, MAC2STR(mgmt->sa));
1245                         return;
1246                 }
1247         } else {
1248                 if (hapd->iconf->ignore_assoc_probability > 0.0d &&
1249                     drand48() < hapd->iconf->ignore_assoc_probability) {
1250                         wpa_printf(MSG_INFO,
1251                                    "TESTING: ignoring assoc request from "
1252                                    MACSTR, MAC2STR(mgmt->sa));
1253                         return;
1254                 }
1255         }
1256 #endif /* CONFIG_TESTING_OPTIONS */
1257
1258         if (reassoc) {
1259                 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
1260                 listen_interval = le_to_host16(
1261                         mgmt->u.reassoc_req.listen_interval);
1262                 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
1263                            " capab_info=0x%02x listen_interval=%d current_ap="
1264                            MACSTR,
1265                            MAC2STR(mgmt->sa), capab_info, listen_interval,
1266                            MAC2STR(mgmt->u.reassoc_req.current_ap));
1267                 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
1268                 pos = mgmt->u.reassoc_req.variable;
1269         } else {
1270                 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
1271                 listen_interval = le_to_host16(
1272                         mgmt->u.assoc_req.listen_interval);
1273                 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
1274                            " capab_info=0x%02x listen_interval=%d",
1275                            MAC2STR(mgmt->sa), capab_info, listen_interval);
1276                 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
1277                 pos = mgmt->u.assoc_req.variable;
1278         }
1279
1280         sta = ap_get_sta(hapd, mgmt->sa);
1281 #ifdef CONFIG_IEEE80211R
1282         if (sta && sta->auth_alg == WLAN_AUTH_FT &&
1283             (sta->flags & WLAN_STA_AUTH) == 0) {
1284                 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
1285                            "prior to authentication since it is using "
1286                            "over-the-DS FT", MAC2STR(mgmt->sa));
1287         } else
1288 #endif /* CONFIG_IEEE80211R */
1289         if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
1290                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1291                                HOSTAPD_LEVEL_INFO, "Station tried to "
1292                                "associate before authentication "
1293                                "(aid=%d flags=0x%x)",
1294                                sta ? sta->aid : -1,
1295                                sta ? sta->flags : 0);
1296                 send_deauth(hapd, mgmt->sa,
1297                             WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA);
1298                 return;
1299         }
1300
1301         if (hapd->tkip_countermeasures) {
1302                 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
1303                 goto fail;
1304         }
1305
1306         if (listen_interval > hapd->conf->max_listen_interval) {
1307                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1308                                HOSTAPD_LEVEL_DEBUG,
1309                                "Too large Listen Interval (%d)",
1310                                listen_interval);
1311                 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
1312                 goto fail;
1313         }
1314
1315         /* followed by SSID and Supported rates; and HT capabilities if 802.11n
1316          * is used */
1317         resp = check_assoc_ies(hapd, sta, pos, left, reassoc);
1318         if (resp != WLAN_STATUS_SUCCESS)
1319                 goto fail;
1320
1321         if (hostapd_get_aid(hapd, sta) < 0) {
1322                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1323                                HOSTAPD_LEVEL_INFO, "No room for more AIDs");
1324                 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
1325                 goto fail;
1326         }
1327
1328         sta->capability = capab_info;
1329         sta->listen_interval = listen_interval;
1330
1331         if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
1332                 sta->flags |= WLAN_STA_NONERP;
1333         for (i = 0; i < sta->supported_rates_len; i++) {
1334                 if ((sta->supported_rates[i] & 0x7f) > 22) {
1335                         sta->flags &= ~WLAN_STA_NONERP;
1336                         break;
1337                 }
1338         }
1339         if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
1340                 sta->nonerp_set = 1;
1341                 hapd->iface->num_sta_non_erp++;
1342                 if (hapd->iface->num_sta_non_erp == 1)
1343                         ieee802_11_set_beacons(hapd->iface);
1344         }
1345
1346         if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
1347             !sta->no_short_slot_time_set) {
1348                 sta->no_short_slot_time_set = 1;
1349                 hapd->iface->num_sta_no_short_slot_time++;
1350                 if (hapd->iface->current_mode->mode ==
1351                     HOSTAPD_MODE_IEEE80211G &&
1352                     hapd->iface->num_sta_no_short_slot_time == 1)
1353                         ieee802_11_set_beacons(hapd->iface);
1354         }
1355
1356         if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1357                 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
1358         else
1359                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
1360
1361         if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
1362             !sta->no_short_preamble_set) {
1363                 sta->no_short_preamble_set = 1;
1364                 hapd->iface->num_sta_no_short_preamble++;
1365                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
1366                     && hapd->iface->num_sta_no_short_preamble == 1)
1367                         ieee802_11_set_beacons(hapd->iface);
1368         }
1369
1370 #ifdef CONFIG_IEEE80211N
1371         update_ht_state(hapd, sta);
1372 #endif /* CONFIG_IEEE80211N */
1373
1374         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1375                        HOSTAPD_LEVEL_DEBUG,
1376                        "association OK (aid %d)", sta->aid);
1377         /* Station will be marked associated, after it acknowledges AssocResp
1378          */
1379         sta->flags |= WLAN_STA_ASSOC_REQ_OK;
1380
1381 #ifdef CONFIG_IEEE80211W
1382         if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) {
1383                 wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out "
1384                            "SA Query procedure", reassoc ? "re" : "");
1385                 /* TODO: Send a protected Disassociate frame to the STA using
1386                  * the old key and Reason Code "Previous Authentication no
1387                  * longer valid". Make sure this is only sent protected since
1388                  * unprotected frame would be received by the STA that is now
1389                  * trying to associate.
1390                  */
1391         }
1392 #endif /* CONFIG_IEEE80211W */
1393
1394         if (reassoc) {
1395                 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
1396                           ETH_ALEN);
1397         }
1398
1399         if (sta->last_assoc_req)
1400                 os_free(sta->last_assoc_req);
1401         sta->last_assoc_req = os_malloc(len);
1402         if (sta->last_assoc_req)
1403                 os_memcpy(sta->last_assoc_req, mgmt, len);
1404
1405         /* Make sure that the previously registered inactivity timer will not
1406          * remove the STA immediately. */
1407         sta->timeout_next = STA_NULLFUNC;
1408
1409  fail:
1410         send_assoc_resp(hapd, sta, resp, reassoc, pos, left);
1411 }
1412
1413
1414 static void handle_disassoc(struct hostapd_data *hapd,
1415                             const struct ieee80211_mgmt *mgmt, size_t len)
1416 {
1417         struct sta_info *sta;
1418
1419         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
1420                 printf("handle_disassoc - too short payload (len=%lu)\n",
1421                        (unsigned long) len);
1422                 return;
1423         }
1424
1425         wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
1426                    MAC2STR(mgmt->sa),
1427                    le_to_host16(mgmt->u.disassoc.reason_code));
1428
1429         sta = ap_get_sta(hapd, mgmt->sa);
1430         if (sta == NULL) {
1431                 printf("Station " MACSTR " trying to disassociate, but it "
1432                        "is not associated.\n", MAC2STR(mgmt->sa));
1433                 return;
1434         }
1435
1436         ap_sta_set_authorized(hapd, sta, 0);
1437         sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK);
1438         wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
1439         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1440                        HOSTAPD_LEVEL_INFO, "disassociated");
1441         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1442         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1443         /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
1444          * authenticated. */
1445         accounting_sta_stop(hapd, sta);
1446         ieee802_1x_free_station(sta);
1447         hostapd_drv_sta_remove(hapd, sta->addr);
1448
1449         if (sta->timeout_next == STA_NULLFUNC ||
1450             sta->timeout_next == STA_DISASSOC) {
1451                 sta->timeout_next = STA_DEAUTH;
1452                 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1453                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
1454                                        hapd, sta);
1455         }
1456
1457         mlme_disassociate_indication(
1458                 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
1459 }
1460
1461
1462 static void handle_deauth(struct hostapd_data *hapd,
1463                           const struct ieee80211_mgmt *mgmt, size_t len)
1464 {
1465         struct sta_info *sta;
1466
1467         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
1468                 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "handle_deauth - too short "
1469                         "payload (len=%lu)", (unsigned long) len);
1470                 return;
1471         }
1472
1473         wpa_msg(hapd->msg_ctx, MSG_DEBUG, "deauthentication: STA=" MACSTR
1474                 " reason_code=%d",
1475                 MAC2STR(mgmt->sa), le_to_host16(mgmt->u.deauth.reason_code));
1476
1477         sta = ap_get_sta(hapd, mgmt->sa);
1478         if (sta == NULL) {
1479                 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR " trying "
1480                         "to deauthenticate, but it is not authenticated",
1481                         MAC2STR(mgmt->sa));
1482                 return;
1483         }
1484
1485         ap_sta_set_authorized(hapd, sta, 0);
1486         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
1487                         WLAN_STA_ASSOC_REQ_OK);
1488         wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1489         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1490                        HOSTAPD_LEVEL_DEBUG, "deauthenticated");
1491         mlme_deauthenticate_indication(
1492                 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
1493         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1494         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1495         ap_free_sta(hapd, sta);
1496 }
1497
1498
1499 static void handle_beacon(struct hostapd_data *hapd,
1500                           const struct ieee80211_mgmt *mgmt, size_t len,
1501                           struct hostapd_frame_info *fi)
1502 {
1503         struct ieee802_11_elems elems;
1504
1505         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
1506                 printf("handle_beacon - too short payload (len=%lu)\n",
1507                        (unsigned long) len);
1508                 return;
1509         }
1510
1511         (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
1512                                       len - (IEEE80211_HDRLEN +
1513                                              sizeof(mgmt->u.beacon)), &elems,
1514                                       0);
1515
1516         ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
1517 }
1518
1519
1520 #ifdef CONFIG_IEEE80211W
1521
1522 static void hostapd_sa_query_action(struct hostapd_data *hapd,
1523                                     const struct ieee80211_mgmt *mgmt,
1524                                     size_t len)
1525 {
1526         const u8 *end;
1527
1528         end = mgmt->u.action.u.sa_query_resp.trans_id +
1529                 WLAN_SA_QUERY_TR_ID_LEN;
1530         if (((u8 *) mgmt) + len < end) {
1531                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action "
1532                            "frame (len=%lu)", (unsigned long) len);
1533                 return;
1534         }
1535
1536         ieee802_11_sa_query_action(hapd, mgmt->sa,
1537                                    mgmt->u.action.u.sa_query_resp.action,
1538                                    mgmt->u.action.u.sa_query_resp.trans_id);
1539 }
1540
1541
1542 static int robust_action_frame(u8 category)
1543 {
1544         return category != WLAN_ACTION_PUBLIC &&
1545                 category != WLAN_ACTION_HT;
1546 }
1547 #endif /* CONFIG_IEEE80211W */
1548
1549
1550 #ifdef CONFIG_WNM
1551 static void hostapd_wnm_action(struct hostapd_data *hapd, struct sta_info *sta,
1552                                const struct ieee80211_mgmt *mgmt,
1553                                size_t len)
1554 {
1555         struct rx_action action;
1556         if (len < IEEE80211_HDRLEN + 2)
1557                 return;
1558         os_memset(&action, 0, sizeof(action));
1559         action.da = mgmt->da;
1560         action.sa = mgmt->sa;
1561         action.bssid = mgmt->bssid;
1562         action.category = mgmt->u.action.category;
1563         action.data = (const u8 *) &mgmt->u.action.u.wnm_sleep_req.action;
1564         action.len = len - IEEE80211_HDRLEN - 1;
1565         action.freq = hapd->iface->freq;
1566         ieee802_11_rx_wnm_action_ap(hapd, &action);
1567 }
1568 #endif /* CONFIG_WNM */
1569
1570
1571 static void handle_action(struct hostapd_data *hapd,
1572                           const struct ieee80211_mgmt *mgmt, size_t len)
1573 {
1574         struct sta_info *sta;
1575         sta = ap_get_sta(hapd, mgmt->sa);
1576
1577         if (len < IEEE80211_HDRLEN + 1) {
1578                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1579                                HOSTAPD_LEVEL_DEBUG,
1580                                "handle_action - too short payload (len=%lu)",
1581                                (unsigned long) len);
1582                 return;
1583         }
1584
1585         if (mgmt->u.action.category != WLAN_ACTION_PUBLIC &&
1586             (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))) {
1587                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored Action "
1588                            "frame (category=%u) from unassociated STA " MACSTR,
1589                            MAC2STR(mgmt->sa), mgmt->u.action.category);
1590                 return;
1591         }
1592
1593 #ifdef CONFIG_IEEE80211W
1594         if (sta && (sta->flags & WLAN_STA_MFP) &&
1595             !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP) &&
1596               robust_action_frame(mgmt->u.action.category))) {
1597                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1598                                HOSTAPD_LEVEL_DEBUG,
1599                                "Dropped unprotected Robust Action frame from "
1600                                "an MFP STA");
1601                 return;
1602         }
1603 #endif /* CONFIG_IEEE80211W */
1604
1605         switch (mgmt->u.action.category) {
1606 #ifdef CONFIG_IEEE80211R
1607         case WLAN_ACTION_FT:
1608                 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
1609                                      len - IEEE80211_HDRLEN))
1610                         break;
1611                 return;
1612 #endif /* CONFIG_IEEE80211R */
1613         case WLAN_ACTION_WMM:
1614                 hostapd_wmm_action(hapd, mgmt, len);
1615                 return;
1616 #ifdef CONFIG_IEEE80211W
1617         case WLAN_ACTION_SA_QUERY:
1618                 hostapd_sa_query_action(hapd, mgmt, len);
1619                 return;
1620 #endif /* CONFIG_IEEE80211W */
1621 #ifdef CONFIG_WNM
1622         case WLAN_ACTION_WNM:
1623                 hostapd_wnm_action(hapd, sta, mgmt, len);
1624                 return;
1625 #endif /* CONFIG_WNM */
1626         case WLAN_ACTION_PUBLIC:
1627                 if (hapd->public_action_cb) {
1628                         hapd->public_action_cb(hapd->public_action_cb_ctx,
1629                                                (u8 *) mgmt, len,
1630                                                hapd->iface->freq);
1631                 }
1632                 if (hapd->public_action_cb2) {
1633                         hapd->public_action_cb2(hapd->public_action_cb2_ctx,
1634                                                 (u8 *) mgmt, len,
1635                                                 hapd->iface->freq);
1636                 }
1637                 if (hapd->public_action_cb || hapd->public_action_cb2)
1638                         return;
1639                 break;
1640         case WLAN_ACTION_VENDOR_SPECIFIC:
1641                 if (hapd->vendor_action_cb) {
1642                         if (hapd->vendor_action_cb(hapd->vendor_action_cb_ctx,
1643                                                    (u8 *) mgmt, len,
1644                                                    hapd->iface->freq) == 0)
1645                                 return;
1646                 }
1647                 break;
1648         }
1649
1650         hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1651                        HOSTAPD_LEVEL_DEBUG,
1652                        "handle_action - unknown action category %d or invalid "
1653                        "frame",
1654                        mgmt->u.action.category);
1655         if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
1656             !(mgmt->sa[0] & 0x01)) {
1657                 struct ieee80211_mgmt *resp;
1658
1659                 /*
1660                  * IEEE 802.11-REVma/D9.0 - 7.3.1.11
1661                  * Return the Action frame to the source without change
1662                  * except that MSB of the Category set to 1.
1663                  */
1664                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
1665                            "frame back to sender");
1666                 resp = os_malloc(len);
1667                 if (resp == NULL)
1668                         return;
1669                 os_memcpy(resp, mgmt, len);
1670                 os_memcpy(resp->da, resp->sa, ETH_ALEN);
1671                 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
1672                 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
1673                 resp->u.action.category |= 0x80;
1674
1675                 if (hostapd_drv_send_mlme(hapd, resp, len, 0) < 0) {
1676                         wpa_printf(MSG_ERROR, "IEEE 802.11: Failed to send "
1677                                    "Action frame");
1678                 }
1679                 os_free(resp);
1680         }
1681 }
1682
1683
1684 /**
1685  * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
1686  * @hapd: hostapd BSS data structure (the BSS to which the management frame was
1687  * sent to)
1688  * @buf: management frame data (starting from IEEE 802.11 header)
1689  * @len: length of frame data in octets
1690  * @fi: meta data about received frame (signal level, etc.)
1691  *
1692  * Process all incoming IEEE 802.11 management frames. This will be called for
1693  * each frame received from the kernel driver through wlan#ap interface. In
1694  * addition, it can be called to re-inserted pending frames (e.g., when using
1695  * external RADIUS server as an MAC ACL).
1696  */
1697 void ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len,
1698                      struct hostapd_frame_info *fi)
1699 {
1700         struct ieee80211_mgmt *mgmt;
1701         int broadcast;
1702         u16 fc, stype;
1703
1704         if (len < 24)
1705                 return;
1706
1707         mgmt = (struct ieee80211_mgmt *) buf;
1708         fc = le_to_host16(mgmt->frame_control);
1709         stype = WLAN_FC_GET_STYPE(fc);
1710
1711         if (stype == WLAN_FC_STYPE_BEACON) {
1712                 handle_beacon(hapd, mgmt, len, fi);
1713                 return;
1714         }
1715
1716         broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
1717                 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
1718                 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
1719
1720         if (!broadcast &&
1721 #ifdef CONFIG_P2P
1722             /* Invitation responses can be sent with the peer MAC as BSSID */
1723             !((hapd->conf->p2p & P2P_GROUP_OWNER) &&
1724               stype == WLAN_FC_STYPE_ACTION) &&
1725 #endif /* CONFIG_P2P */
1726             os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
1727                 printf("MGMT: BSSID=" MACSTR " not our address\n",
1728                        MAC2STR(mgmt->bssid));
1729                 return;
1730         }
1731
1732
1733         if (stype == WLAN_FC_STYPE_PROBE_REQ) {
1734                 handle_probe_req(hapd, mgmt, len, fi->ssi_signal);
1735                 return;
1736         }
1737
1738         if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
1739                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1740                                HOSTAPD_LEVEL_DEBUG,
1741                                "MGMT: DA=" MACSTR " not our address",
1742                                MAC2STR(mgmt->da));
1743                 return;
1744         }
1745
1746         switch (stype) {
1747         case WLAN_FC_STYPE_AUTH:
1748                 wpa_printf(MSG_DEBUG, "mgmt::auth");
1749                 handle_auth(hapd, mgmt, len);
1750                 break;
1751         case WLAN_FC_STYPE_ASSOC_REQ:
1752                 wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
1753                 handle_assoc(hapd, mgmt, len, 0);
1754                 break;
1755         case WLAN_FC_STYPE_REASSOC_REQ:
1756                 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
1757                 handle_assoc(hapd, mgmt, len, 1);
1758                 break;
1759         case WLAN_FC_STYPE_DISASSOC:
1760                 wpa_printf(MSG_DEBUG, "mgmt::disassoc");
1761                 handle_disassoc(hapd, mgmt, len);
1762                 break;
1763         case WLAN_FC_STYPE_DEAUTH:
1764                 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "mgmt::deauth");
1765                 handle_deauth(hapd, mgmt, len);
1766                 break;
1767         case WLAN_FC_STYPE_ACTION:
1768                 wpa_printf(MSG_DEBUG, "mgmt::action");
1769                 handle_action(hapd, mgmt, len);
1770                 break;
1771         default:
1772                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1773                                HOSTAPD_LEVEL_DEBUG,
1774                                "unknown mgmt frame subtype %d", stype);
1775                 break;
1776         }
1777 }
1778
1779
1780 static void handle_auth_cb(struct hostapd_data *hapd,
1781                            const struct ieee80211_mgmt *mgmt,
1782                            size_t len, int ok)
1783 {
1784         u16 auth_alg, auth_transaction, status_code;
1785         struct sta_info *sta;
1786
1787         if (!ok) {
1788                 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1789                                HOSTAPD_LEVEL_NOTICE,
1790                                "did not acknowledge authentication response");
1791                 return;
1792         }
1793
1794         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
1795                 printf("handle_auth_cb - too short payload (len=%lu)\n",
1796                        (unsigned long) len);
1797                 return;
1798         }
1799
1800         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1801         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1802         status_code = le_to_host16(mgmt->u.auth.status_code);
1803
1804         sta = ap_get_sta(hapd, mgmt->da);
1805         if (!sta) {
1806                 printf("handle_auth_cb: STA " MACSTR " not found\n",
1807                        MAC2STR(mgmt->da));
1808                 return;
1809         }
1810
1811         if (status_code == WLAN_STATUS_SUCCESS &&
1812             ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
1813              (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
1814                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1815                                HOSTAPD_LEVEL_INFO, "authenticated");
1816                 sta->flags |= WLAN_STA_AUTH;
1817         }
1818 }
1819
1820
1821 static void hostapd_set_wds_encryption(struct hostapd_data *hapd,
1822                                        struct sta_info *sta,
1823                                        char *ifname_wds)
1824 {
1825         int i;
1826         struct hostapd_ssid *ssid = sta->ssid;
1827
1828         if (hapd->conf->ieee802_1x || hapd->conf->wpa)
1829                 return;
1830
1831         for (i = 0; i < 4; i++) {
1832                 if (ssid->wep.key[i] &&
1833                     hostapd_drv_set_key(ifname_wds, hapd, WPA_ALG_WEP, NULL, i,
1834                                         i == ssid->wep.idx, NULL, 0,
1835                                         ssid->wep.key[i], ssid->wep.len[i])) {
1836                         wpa_printf(MSG_WARNING,
1837                                    "Could not set WEP keys for WDS interface; %s",
1838                                    ifname_wds);
1839                         break;
1840                 }
1841         }
1842 }
1843
1844
1845 static void handle_assoc_cb(struct hostapd_data *hapd,
1846                             const struct ieee80211_mgmt *mgmt,
1847                             size_t len, int reassoc, int ok)
1848 {
1849         u16 status;
1850         struct sta_info *sta;
1851         int new_assoc = 1;
1852         struct ieee80211_ht_capabilities ht_cap;
1853         struct ieee80211_vht_capabilities vht_cap;
1854
1855         if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
1856                                       sizeof(mgmt->u.assoc_resp))) {
1857                 printf("handle_assoc_cb(reassoc=%d) - too short payload "
1858                        "(len=%lu)\n", reassoc, (unsigned long) len);
1859                 return;
1860         }
1861
1862         sta = ap_get_sta(hapd, mgmt->da);
1863         if (!sta) {
1864                 printf("handle_assoc_cb: STA " MACSTR " not found\n",
1865                        MAC2STR(mgmt->da));
1866                 return;
1867         }
1868
1869         if (!ok) {
1870                 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1871                                HOSTAPD_LEVEL_DEBUG,
1872                                "did not acknowledge association response");
1873                 sta->flags &= ~WLAN_STA_ASSOC_REQ_OK;
1874                 return;
1875         }
1876
1877         if (reassoc)
1878                 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
1879         else
1880                 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1881
1882         if (status != WLAN_STATUS_SUCCESS)
1883                 goto fail;
1884
1885         /* Stop previous accounting session, if one is started, and allocate
1886          * new session id for the new session. */
1887         accounting_sta_stop(hapd, sta);
1888
1889         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1890                        HOSTAPD_LEVEL_INFO,
1891                        "associated (aid %d)",
1892                        sta->aid);
1893
1894         if (sta->flags & WLAN_STA_ASSOC)
1895                 new_assoc = 0;
1896         sta->flags |= WLAN_STA_ASSOC;
1897         if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa) ||
1898             sta->auth_alg == WLAN_AUTH_FT) {
1899                 /*
1900                  * Open, static WEP, or FT protocol; no separate authorization
1901                  * step.
1902                  */
1903                 ap_sta_set_authorized(hapd, sta, 1);
1904         }
1905
1906         if (reassoc)
1907                 mlme_reassociate_indication(hapd, sta);
1908         else
1909                 mlme_associate_indication(hapd, sta);
1910
1911 #ifdef CONFIG_IEEE80211W
1912         sta->sa_query_timed_out = 0;
1913 #endif /* CONFIG_IEEE80211W */
1914
1915         /*
1916          * Remove the STA entry in order to make sure the STA PS state gets
1917          * cleared and configuration gets updated in case of reassociation back
1918          * to the same AP.
1919          */
1920         hostapd_drv_sta_remove(hapd, sta->addr);
1921
1922 #ifdef CONFIG_IEEE80211N
1923         if (sta->flags & WLAN_STA_HT)
1924                 hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap);
1925 #endif /* CONFIG_IEEE80211N */
1926 #ifdef CONFIG_IEEE80211AC
1927         if (sta->flags & WLAN_STA_VHT)
1928                 hostapd_get_vht_capab(hapd, sta->vht_capabilities, &vht_cap);
1929 #endif /* CONFIG_IEEE80211AC */
1930
1931         if (hostapd_sta_add(hapd, sta->addr, sta->aid, sta->capability,
1932                             sta->supported_rates, sta->supported_rates_len,
1933                             sta->listen_interval,
1934                             sta->flags & WLAN_STA_HT ? &ht_cap : NULL,
1935                             sta->flags & WLAN_STA_VHT ? &vht_cap : NULL,
1936                             sta->flags, sta->qosinfo)) {
1937                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1938                                HOSTAPD_LEVEL_NOTICE,
1939                                "Could not add STA to kernel driver");
1940
1941                 ap_sta_disconnect(hapd, sta, sta->addr,
1942                                   WLAN_REASON_DISASSOC_AP_BUSY);
1943
1944                 goto fail;
1945         }
1946
1947         if (sta->flags & WLAN_STA_WDS) {
1948                 int ret;
1949                 char ifname_wds[IFNAMSIZ + 1];
1950
1951                 ret = hostapd_set_wds_sta(hapd, ifname_wds, sta->addr,
1952                                           sta->aid, 1);
1953                 if (!ret)
1954                         hostapd_set_wds_encryption(hapd, sta, ifname_wds);
1955         }
1956
1957         if (sta->eapol_sm == NULL) {
1958                 /*
1959                  * This STA does not use RADIUS server for EAP authentication,
1960                  * so bind it to the selected VLAN interface now, since the
1961                  * interface selection is not going to change anymore.
1962                  */
1963                 if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
1964                         goto fail;
1965         } else if (sta->vlan_id) {
1966                 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
1967                 if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
1968                         goto fail;
1969         }
1970
1971         hostapd_set_sta_flags(hapd, sta);
1972
1973         if (sta->auth_alg == WLAN_AUTH_FT)
1974                 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
1975         else
1976                 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
1977         hapd->new_assoc_sta_cb(hapd, sta, !new_assoc);
1978
1979         ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
1980
1981  fail:
1982         /* Copy of the association request is not needed anymore */
1983         if (sta->last_assoc_req) {
1984                 os_free(sta->last_assoc_req);
1985                 sta->last_assoc_req = NULL;
1986         }
1987 }
1988
1989
1990 static void handle_deauth_cb(struct hostapd_data *hapd,
1991                              const struct ieee80211_mgmt *mgmt,
1992                              size_t len, int ok)
1993 {
1994         struct sta_info *sta;
1995         if (mgmt->da[0] & 0x01)
1996                 return;
1997         sta = ap_get_sta(hapd, mgmt->da);
1998         if (!sta) {
1999                 wpa_printf(MSG_DEBUG, "handle_deauth_cb: STA " MACSTR
2000                            " not found", MAC2STR(mgmt->da));
2001                 return;
2002         }
2003         if (ok)
2004                 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged deauth",
2005                            MAC2STR(sta->addr));
2006         else
2007                 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
2008                            "deauth", MAC2STR(sta->addr));
2009
2010         ap_sta_deauth_cb(hapd, sta);
2011 }
2012
2013
2014 static void handle_disassoc_cb(struct hostapd_data *hapd,
2015                                const struct ieee80211_mgmt *mgmt,
2016                                size_t len, int ok)
2017 {
2018         struct sta_info *sta;
2019         if (mgmt->da[0] & 0x01)
2020                 return;
2021         sta = ap_get_sta(hapd, mgmt->da);
2022         if (!sta) {
2023                 wpa_printf(MSG_DEBUG, "handle_disassoc_cb: STA " MACSTR
2024                            " not found", MAC2STR(mgmt->da));
2025                 return;
2026         }
2027         if (ok)
2028                 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged disassoc",
2029                            MAC2STR(sta->addr));
2030         else
2031                 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
2032                            "disassoc", MAC2STR(sta->addr));
2033
2034         ap_sta_disassoc_cb(hapd, sta);
2035 }
2036
2037
2038 /**
2039  * ieee802_11_mgmt_cb - Process management frame TX status callback
2040  * @hapd: hostapd BSS data structure (the BSS from which the management frame
2041  * was sent from)
2042  * @buf: management frame data (starting from IEEE 802.11 header)
2043  * @len: length of frame data in octets
2044  * @stype: management frame subtype from frame control field
2045  * @ok: Whether the frame was ACK'ed
2046  */
2047 void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len,
2048                         u16 stype, int ok)
2049 {
2050         const struct ieee80211_mgmt *mgmt;
2051         mgmt = (const struct ieee80211_mgmt *) buf;
2052
2053         switch (stype) {
2054         case WLAN_FC_STYPE_AUTH:
2055                 wpa_printf(MSG_DEBUG, "mgmt::auth cb");
2056                 handle_auth_cb(hapd, mgmt, len, ok);
2057                 break;
2058         case WLAN_FC_STYPE_ASSOC_RESP:
2059                 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
2060                 handle_assoc_cb(hapd, mgmt, len, 0, ok);
2061                 break;
2062         case WLAN_FC_STYPE_REASSOC_RESP:
2063                 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
2064                 handle_assoc_cb(hapd, mgmt, len, 1, ok);
2065                 break;
2066         case WLAN_FC_STYPE_PROBE_RESP:
2067                 wpa_printf(MSG_EXCESSIVE, "mgmt::proberesp cb");
2068                 break;
2069         case WLAN_FC_STYPE_DEAUTH:
2070                 wpa_printf(MSG_DEBUG, "mgmt::deauth cb");
2071                 handle_deauth_cb(hapd, mgmt, len, ok);
2072                 break;
2073         case WLAN_FC_STYPE_DISASSOC:
2074                 wpa_printf(MSG_DEBUG, "mgmt::disassoc cb");
2075                 handle_disassoc_cb(hapd, mgmt, len, ok);
2076                 break;
2077         case WLAN_FC_STYPE_ACTION:
2078                 wpa_printf(MSG_DEBUG, "mgmt::action cb");
2079                 break;
2080         default:
2081                 printf("unknown mgmt cb frame subtype %d\n", stype);
2082                 break;
2083         }
2084 }
2085
2086
2087 int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
2088 {
2089         /* TODO */
2090         return 0;
2091 }
2092
2093
2094 int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
2095                            char *buf, size_t buflen)
2096 {
2097         /* TODO */
2098         return 0;
2099 }
2100
2101
2102 void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
2103                        const u8 *buf, 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, addr);
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, addr);
2114                         if (sta)
2115                                 break;
2116                 }
2117         }
2118         if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))
2119                 return;
2120         if (sta->flags & WLAN_STA_PENDING_POLL) {
2121                 wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
2122                            "activity poll", MAC2STR(sta->addr),
2123                            ack ? "ACKed" : "did not ACK");
2124                 if (ack)
2125                         sta->flags &= ~WLAN_STA_PENDING_POLL;
2126         }
2127
2128         ieee802_1x_tx_status(hapd, sta, buf, len, ack);
2129 }
2130
2131
2132 void hostapd_eapol_tx_status(struct hostapd_data *hapd, const u8 *dst,
2133                              const u8 *data, size_t len, int ack)
2134 {
2135         struct sta_info *sta;
2136         struct hostapd_iface *iface = hapd->iface;
2137
2138         sta = ap_get_sta(hapd, dst);
2139         if (sta == NULL && iface->num_bss > 1) {
2140                 size_t j;
2141                 for (j = 0; j < iface->num_bss; j++) {
2142                         hapd = iface->bss[j];
2143                         sta = ap_get_sta(hapd, dst);
2144                         if (sta)
2145                                 break;
2146                 }
2147         }
2148         if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
2149                 wpa_printf(MSG_DEBUG, "Ignore TX status for Data frame to STA "
2150                            MACSTR " that is not currently associated",
2151                            MAC2STR(dst));
2152                 return;
2153         }
2154
2155         ieee802_1x_eapol_tx_status(hapd, sta, data, len, ack);
2156 }
2157
2158
2159 void hostapd_client_poll_ok(struct hostapd_data *hapd, const u8 *addr)
2160 {
2161         struct sta_info *sta;
2162         struct hostapd_iface *iface = hapd->iface;
2163
2164         sta = ap_get_sta(hapd, addr);
2165         if (sta == NULL && iface->num_bss > 1) {
2166                 size_t j;
2167                 for (j = 0; j < iface->num_bss; j++) {
2168                         hapd = iface->bss[j];
2169                         sta = ap_get_sta(hapd, addr);
2170                         if (sta)
2171                                 break;
2172                 }
2173         }
2174         if (sta == NULL)
2175                 return;
2176         if (!(sta->flags & WLAN_STA_PENDING_POLL))
2177                 return;
2178
2179         wpa_printf(MSG_DEBUG, "STA " MACSTR " ACKed pending "
2180                    "activity poll", MAC2STR(sta->addr));
2181         sta->flags &= ~WLAN_STA_PENDING_POLL;
2182 }
2183
2184
2185 void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src,
2186                                 int wds)
2187 {
2188         struct sta_info *sta;
2189
2190         sta = ap_get_sta(hapd, src);
2191         if (sta && (sta->flags & WLAN_STA_ASSOC)) {
2192                 if (!hapd->conf->wds_sta)
2193                         return;
2194
2195                 if (wds && !(sta->flags & WLAN_STA_WDS)) {
2196                         int ret;
2197                         char ifname_wds[IFNAMSIZ + 1];
2198
2199                         wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for "
2200                                    "STA " MACSTR " (aid %u)",
2201                                    MAC2STR(sta->addr), sta->aid);
2202                         sta->flags |= WLAN_STA_WDS;
2203                         ret = hostapd_set_wds_sta(hapd, ifname_wds,
2204                                                   sta->addr, sta->aid, 1);
2205                         if (!ret)
2206                                 hostapd_set_wds_encryption(hapd, sta,
2207                                                            ifname_wds);
2208                 }
2209                 return;
2210         }
2211
2212         wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA "
2213                    MACSTR, MAC2STR(src));
2214         if (src[0] & 0x01) {
2215                 /* Broadcast bit set in SA?! Ignore the frame silently. */
2216                 return;
2217         }
2218
2219         if (sta && (sta->flags & WLAN_STA_ASSOC_REQ_OK)) {
2220                 wpa_printf(MSG_DEBUG, "Association Response to the STA has "
2221                            "already been sent, but no TX status yet known - "
2222                            "ignore Class 3 frame issue with " MACSTR,
2223                            MAC2STR(src));
2224                 return;
2225         }
2226
2227         if (sta && (sta->flags & WLAN_STA_AUTH))
2228                 hostapd_drv_sta_disassoc(
2229                         hapd, src,
2230                         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
2231         else
2232                 hostapd_drv_sta_deauth(
2233                         hapd, src,
2234                         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
2235 }
2236
2237
2238 #endif /* CONFIG_NATIVE_WINDOWS */