src/ap/ieee802_11.c

   1 /*
   2  * hostapd / IEEE 802.11 Management
   3  * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "utils/includes.h"
  16
  17 #ifndef CONFIG_NATIVE_WINDOWS
  18
  19 #include "utils/common.h"
  20 #include "utils/eloop.h"
  21 #include "crypto/crypto.h"
  22 #include "drivers/driver.h"
  23 #include "common/wpa_ctrl.h"
  24 #include "radius/radius.h"
  25 #include "radius/radius_client.h"
  26 #include "hostapd.h"
  27 #include "beacon.h"
  28 #include "ieee802_11_auth.h"
  29 #include "sta_info.h"
  30 #include "ieee802_1x.h"
  31 #include "wpa_auth.h"
  32 #include "wmm.h"
  33 #include "ap_list.h"
  34 #include "accounting.h"
  35 #include "ap_config.h"
  36 #include "ap_mlme.h"
  37 #include "ieee802_11.h"
  38
  39
  40 u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
  41 {
  42         u8 *pos = eid;
  43         int i, num, count;
  44
  45         if (hapd->iface->current_rates == NULL)
  46                 return eid;
  47
  48         *pos++ = WLAN_EID_SUPP_RATES;
  49         num = hapd->iface->num_rates;
  50         if (num > 8) {
  51                 /* rest of the rates are encoded in Extended supported
  52                  * rates element */
  53                 num = 8;
  54         }
  55
  56         *pos++ = num;
  57         count = 0;
  58         for (i = 0, count = 0; i < hapd->iface->num_rates && count < num;
  59              i++) {
  60                 count++;
  61                 *pos = hapd->iface->current_rates[i].rate / 5;
  62                 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
  63                         *pos |= 0x80;
  64                 pos++;
  65         }
  66
  67         return pos;
  68 }
  69
  70
  71 u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
  72 {
  73         u8 *pos = eid;
  74         int i, num, count;
  75
  76         if (hapd->iface->current_rates == NULL)
  77                 return eid;
  78
  79         num = hapd->iface->num_rates;
  80         if (num <= 8)
  81                 return eid;
  82         num -= 8;
  83
  84         *pos++ = WLAN_EID_EXT_SUPP_RATES;
  85         *pos++ = num;
  86         count = 0;
  87         for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
  88              i++) {
  89                 count++;
  90                 if (count <= 8)
  91                         continue; /* already in SuppRates IE */
  92                 *pos = hapd->iface->current_rates[i].rate / 5;
  93                 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
  94                         *pos |= 0x80;
  95                 pos++;
  96         }
  97
  98         return pos;
  99 }
 100
 101
 102 u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta,
 103                            int probe)
 104 {
 105         int capab = WLAN_CAPABILITY_ESS;
 106         int privacy;
 107
 108         if (hapd->iface->num_sta_no_short_preamble == 0 &&
 109             hapd->iconf->preamble == SHORT_PREAMBLE)
 110                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
 111
 112         privacy = hapd->conf->ssid.wep.keys_set;
 113
 114         if (hapd->conf->ieee802_1x &&
 115             (hapd->conf->default_wep_key_len ||
 116              hapd->conf->individual_wep_key_len))
 117                 privacy = 1;
 118
 119         if (hapd->conf->wpa)
 120                 privacy = 1;
 121
 122         if (sta) {
 123                 int policy, def_klen;
 124                 if (probe && sta->ssid_probe) {
 125                         policy = sta->ssid_probe->security_policy;
 126                         def_klen = sta->ssid_probe->wep.default_len;
 127                 } else {
 128                         policy = sta->ssid->security_policy;
 129                         def_klen = sta->ssid->wep.default_len;
 130                 }
 131                 privacy = policy != SECURITY_PLAINTEXT;
 132                 if (policy == SECURITY_IEEE_802_1X && def_klen == 0)
 133                         privacy = 0;
 134         }
 135
 136         if (privacy)
 137                 capab |= WLAN_CAPABILITY_PRIVACY;
 138
 139         if (hapd->iface->current_mode &&
 140             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
 141             hapd->iface->num_sta_no_short_slot_time == 0)
 142                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
 143
 144         return capab;
 145 }
 146
 147
 148 #ifdef CONFIG_IEEE80211W
 149 static u8 * hostapd_eid_assoc_comeback_time(struct hostapd_data *hapd,
 150                                             struct sta_info *sta, u8 *eid)
 151 {
 152         u8 *pos = eid;
 153         u32 timeout, tu;
 154         struct os_time now, passed;
 155
 156         *pos++ = WLAN_EID_TIMEOUT_INTERVAL;
 157         *pos++ = 5;
 158         *pos++ = WLAN_TIMEOUT_ASSOC_COMEBACK;
 159         os_get_time(&now);
 160         os_time_sub(&now, &sta->sa_query_start, &passed);
 161         tu = (passed.sec * 1000000 + passed.usec) / 1024;
 162         if (hapd->conf->assoc_sa_query_max_timeout > tu)
 163                 timeout = hapd->conf->assoc_sa_query_max_timeout - tu;
 164         else
 165                 timeout = 0;
 166         if (timeout < hapd->conf->assoc_sa_query_max_timeout)
 167                 timeout++; /* add some extra time for local timers */
 168         WPA_PUT_LE32(pos, timeout);
 169         pos += 4;
 170
 171         return pos;
 172 }
 173 #endif /* CONFIG_IEEE80211W */
 174
 175
 176 void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len)
 177 {
 178         int i;
 179         if (len > HOSTAPD_MAX_SSID_LEN)
 180                 len = HOSTAPD_MAX_SSID_LEN;
 181         for (i = 0; i < len; i++) {
 182                 if (ssid[i] >= 32 && ssid[i] < 127)
 183                         buf[i] = ssid[i];
 184                 else
 185                         buf[i] = '.';
 186         }
 187         buf[len] = '\0';
 188 }
 189
 190
 191 /**
 192  * ieee802_11_send_deauth - Send Deauthentication frame
 193  * @hapd: hostapd BSS data
 194  * @addr: Address of the destination STA
 195  * @reason: Reason code for Deauthentication
 196  */
 197 void ieee802_11_send_deauth(struct hostapd_data *hapd, const u8 *addr,
 198                             u16 reason)
 199 {
 200         struct ieee80211_mgmt mgmt;
 201
 202         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
 203                        HOSTAPD_LEVEL_DEBUG,
 204                        "deauthenticate - reason %d", reason);
 205         os_memset(&mgmt, 0, sizeof(mgmt));
 206         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 207                                           WLAN_FC_STYPE_DEAUTH);
 208         os_memcpy(mgmt.da, addr, ETH_ALEN);
 209         os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
 210         os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
 211         mgmt.u.deauth.reason_code = host_to_le16(reason);
 212         if (hapd->drv.send_mgmt_frame(hapd, &mgmt, IEEE80211_HDRLEN +
 213                                        sizeof(mgmt.u.deauth)) < 0)
 214                 perror("ieee802_11_send_deauth: send");
 215 }
 216
 217
 218 static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
 219                            u16 auth_transaction, const u8 *challenge,
 220                            int iswep)
 221 {
 222         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 223                        HOSTAPD_LEVEL_DEBUG,
 224                        "authentication (shared key, transaction %d)",
 225                        auth_transaction);
 226
 227         if (auth_transaction == 1) {
 228                 if (!sta->challenge) {
 229                         /* Generate a pseudo-random challenge */
 230                         u8 key[8];
 231                         time_t now;
 232                         int r;
 233                         sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
 234                         if (sta->challenge == NULL)
 235                                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 236
 237                         now = time(NULL);
 238                         r = random();
 239                         os_memcpy(key, &now, 4);
 240                         os_memcpy(key + 4, &r, 4);
 241                         rc4_skip(key, sizeof(key), 0,
 242                                  sta->challenge, WLAN_AUTH_CHALLENGE_LEN);
 243                 }
 244                 return 0;
 245         }
 246
 247         if (auth_transaction != 3)
 248                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 249
 250         /* Transaction 3 */
 251         if (!iswep || !sta->challenge || !challenge ||
 252             os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) {
 253                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 254                                HOSTAPD_LEVEL_INFO,
 255                                "shared key authentication - invalid "
 256                                "challenge-response");
 257                 return WLAN_STATUS_CHALLENGE_FAIL;
 258         }
 259
 260         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 261                        HOSTAPD_LEVEL_DEBUG,
 262                        "authentication OK (shared key)");
 263 #ifdef IEEE80211_REQUIRE_AUTH_ACK
 264         /* Station will be marked authenticated if it ACKs the
 265          * authentication reply. */
 266 #else
 267         sta->flags |= WLAN_STA_AUTH;
 268         wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
 269 #endif
 270         os_free(sta->challenge);
 271         sta->challenge = NULL;
 272
 273         return 0;
 274 }
 275
 276
 277 static void send_auth_reply(struct hostapd_data *hapd,
 278                             const u8 *dst, const u8 *bssid,
 279                             u16 auth_alg, u16 auth_transaction, u16 resp,
 280                             const u8 *ies, size_t ies_len)
 281 {
 282         struct ieee80211_mgmt *reply;
 283         u8 *buf;
 284         size_t rlen;
 285
 286         rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
 287         buf = os_zalloc(rlen);
 288         if (buf == NULL)
 289                 return;
 290
 291         reply = (struct ieee80211_mgmt *) buf;
 292         reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 293                                             WLAN_FC_STYPE_AUTH);
 294         os_memcpy(reply->da, dst, ETH_ALEN);
 295         os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
 296         os_memcpy(reply->bssid, bssid, ETH_ALEN);
 297
 298         reply->u.auth.auth_alg = host_to_le16(auth_alg);
 299         reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
 300         reply->u.auth.status_code = host_to_le16(resp);
 301
 302         if (ies && ies_len)
 303                 os_memcpy(reply->u.auth.variable, ies, ies_len);
 304
 305         wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
 306                    " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)",
 307                    MAC2STR(dst), auth_alg, auth_transaction,
 308                    resp, (unsigned long) ies_len);
 309         if (hapd->drv.send_mgmt_frame(hapd, reply, rlen) < 0)
 310                 perror("send_auth_reply: send");
 311
 312         os_free(buf);
 313 }
 314
 315
 316 #ifdef CONFIG_IEEE80211R
 317 static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
 318                                   u16 auth_transaction, u16 status,
 319                                   const u8 *ies, size_t ies_len)
 320 {
 321         struct hostapd_data *hapd = ctx;
 322         struct sta_info *sta;
 323
 324         send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction,
 325                         status, ies, ies_len);
 326
 327         if (status != WLAN_STATUS_SUCCESS)
 328                 return;
 329
 330         sta = ap_get_sta(hapd, dst);
 331         if (sta == NULL)
 332                 return;
 333
 334         hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
 335                        HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
 336         sta->flags |= WLAN_STA_AUTH;
 337         mlme_authenticate_indication(hapd, sta);
 338 }
 339 #endif /* CONFIG_IEEE80211R */
 340
 341
 342 static void handle_auth(struct hostapd_data *hapd,
 343                         const struct ieee80211_mgmt *mgmt, size_t len)
 344 {
 345         u16 auth_alg, auth_transaction, status_code;
 346         u16 resp = WLAN_STATUS_SUCCESS;
 347         struct sta_info *sta = NULL;
 348         int res;
 349         u16 fc;
 350         const u8 *challenge = NULL;
 351         u32 session_timeout, acct_interim_interval;
 352         int vlan_id = 0;
 353         u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
 354         size_t resp_ies_len = 0;
 355
 356         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
 357                 printf("handle_auth - too short payload (len=%lu)\n",
 358                        (unsigned long) len);
 359                 return;
 360         }
 361
 362         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
 363         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
 364         status_code = le_to_host16(mgmt->u.auth.status_code);
 365         fc = le_to_host16(mgmt->frame_control);
 366
 367         if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
 368             2 + WLAN_AUTH_CHALLENGE_LEN &&
 369             mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
 370             mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
 371                 challenge = &mgmt->u.auth.variable[2];
 372
 373         wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
 374                    "auth_transaction=%d status_code=%d wep=%d%s",
 375                    MAC2STR(mgmt->sa), auth_alg, auth_transaction,
 376                    status_code, !!(fc & WLAN_FC_ISWEP),
 377                    challenge ? " challenge" : "");
 378
 379         if (hapd->tkip_countermeasures) {
 380                 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
 381                 goto fail;
 382         }
 383
 384         if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
 385                auth_alg == WLAN_AUTH_OPEN) ||
 386 #ifdef CONFIG_IEEE80211R
 387               (hapd->conf->wpa &&
 388                (hapd->conf->wpa_key_mgmt &
 389                 (WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK)) &&
 390                auth_alg == WLAN_AUTH_FT) ||
 391 #endif /* CONFIG_IEEE80211R */
 392               ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
 393                auth_alg == WLAN_AUTH_SHARED_KEY))) {
 394                 printf("Unsupported authentication algorithm (%d)\n",
 395                        auth_alg);
 396                 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
 397                 goto fail;
 398         }
 399
 400         if (!(auth_transaction == 1 ||
 401               (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
 402                 printf("Unknown authentication transaction number (%d)\n",
 403                        auth_transaction);
 404                 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
 405                 goto fail;
 406         }
 407
 408         if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
 409                 printf("Station " MACSTR " not allowed to authenticate.\n",
 410                        MAC2STR(mgmt->sa));
 411                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 412                 goto fail;
 413         }
 414
 415         res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
 416                                       &session_timeout,
 417                                       &acct_interim_interval, &vlan_id);
 418         if (res == HOSTAPD_ACL_REJECT) {
 419                 printf("Station " MACSTR " not allowed to authenticate.\n",
 420                        MAC2STR(mgmt->sa));
 421                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 422                 goto fail;
 423         }
 424         if (res == HOSTAPD_ACL_PENDING) {
 425                 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
 426                            " waiting for an external authentication",
 427                            MAC2STR(mgmt->sa));
 428                 /* Authentication code will re-send the authentication frame
 429                  * after it has received (and cached) information from the
 430                  * external source. */
 431                 return;
 432         }
 433
 434         sta = ap_sta_add(hapd, mgmt->sa);
 435         if (!sta) {
 436                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 437                 goto fail;
 438         }
 439
 440         if (vlan_id > 0) {
 441                 if (hostapd_get_vlan_id_ifname(hapd->conf->vlan,
 442                                                vlan_id) == NULL) {
 443                         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
 444                                        HOSTAPD_LEVEL_INFO, "Invalid VLAN ID "
 445                                        "%d received from RADIUS server",
 446                                        vlan_id);
 447                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 448                         goto fail;
 449                 }
 450                 sta->vlan_id = vlan_id;
 451                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
 452                                HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
 453         }
 454
 455         sta->flags &= ~WLAN_STA_PREAUTH;
 456         ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
 457
 458         if (hapd->conf->acct_interim_interval == 0 && acct_interim_interval)
 459                 sta->acct_interim_interval = acct_interim_interval;
 460         if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
 461                 ap_sta_session_timeout(hapd, sta, session_timeout);
 462         else
 463                 ap_sta_no_session_timeout(hapd, sta);
 464
 465         switch (auth_alg) {
 466         case WLAN_AUTH_OPEN:
 467                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 468                                HOSTAPD_LEVEL_DEBUG,
 469                                "authentication OK (open system)");
 470 #ifdef IEEE80211_REQUIRE_AUTH_ACK
 471                 /* Station will be marked authenticated if it ACKs the
 472                  * authentication reply. */
 473 #else
 474                 sta->flags |= WLAN_STA_AUTH;
 475                 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
 476                 sta->auth_alg = WLAN_AUTH_OPEN;
 477                 mlme_authenticate_indication(hapd, sta);
 478 #endif
 479                 break;
 480         case WLAN_AUTH_SHARED_KEY:
 481                 resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
 482                                        fc & WLAN_FC_ISWEP);
 483                 sta->auth_alg = WLAN_AUTH_SHARED_KEY;
 484                 mlme_authenticate_indication(hapd, sta);
 485                 if (sta->challenge && auth_transaction == 1) {
 486                         resp_ies[0] = WLAN_EID_CHALLENGE;
 487                         resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
 488                         os_memcpy(resp_ies + 2, sta->challenge,
 489                                   WLAN_AUTH_CHALLENGE_LEN);
 490                         resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
 491                 }
 492                 break;
 493 #ifdef CONFIG_IEEE80211R
 494         case WLAN_AUTH_FT:
 495                 sta->auth_alg = WLAN_AUTH_FT;
 496                 if (sta->wpa_sm == NULL)
 497                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
 498                                                         sta->addr);
 499                 if (sta->wpa_sm == NULL) {
 500                         wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
 501                                    "state machine");
 502                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 503                         goto fail;
 504                 }
 505                 wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
 506                                     auth_transaction, mgmt->u.auth.variable,
 507                                     len - IEEE80211_HDRLEN -
 508                                     sizeof(mgmt->u.auth),
 509                                     handle_auth_ft_finish, hapd);
 510                 /* handle_auth_ft_finish() callback will complete auth. */
 511                 return;
 512 #endif /* CONFIG_IEEE80211R */
 513         }
 514
 515  fail:
 516         send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
 517                         auth_transaction + 1, resp, resp_ies, resp_ies_len);
 518 }
 519
 520
 521 static int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta)
 522 {
 523         int i, j = 32, aid;
 524
 525         /* get a unique AID */
 526         if (sta->aid > 0) {
 527                 wpa_printf(MSG_DEBUG, "  old AID %d", sta->aid);
 528                 return 0;
 529         }
 530
 531         for (i = 0; i < AID_WORDS; i++) {
 532                 if (hapd->sta_aid[i] == (u32) -1)
 533                         continue;
 534                 for (j = 0; j < 32; j++) {
 535                         if (!(hapd->sta_aid[i] & BIT(j)))
 536                                 break;
 537                 }
 538                 if (j < 32)
 539                         break;
 540         }
 541         if (j == 32)
 542                 return -1;
 543         aid = i * 32 + j + 1;
 544         if (aid > 2007)
 545                 return -1;
 546
 547         sta->aid = aid;
 548         hapd->sta_aid[i] |= BIT(j);
 549         wpa_printf(MSG_DEBUG, "  new AID %d", sta->aid);
 550         return 0;
 551 }
 552
 553
 554 static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta,
 555                       const u8 *ssid_ie, size_t ssid_ie_len)
 556 {
 557         if (ssid_ie == NULL)
 558                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 559
 560         if (ssid_ie_len != hapd->conf->ssid.ssid_len ||
 561             os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) {
 562                 char ssid_txt[33];
 563                 ieee802_11_print_ssid(ssid_txt, ssid_ie, ssid_ie_len);
 564                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 565                                HOSTAPD_LEVEL_INFO,
 566                                "Station tried to associate with unknown SSID "
 567                                "'%s'", ssid_txt);
 568                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 569         }
 570
 571         return WLAN_STATUS_SUCCESS;
 572 }
 573
 574
 575 static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta,
 576                      const u8 *wmm_ie, size_t wmm_ie_len)
 577 {
 578         sta->flags &= ~WLAN_STA_WMM;
 579         if (wmm_ie && hapd->conf->wmm_enabled) {
 580                 if (hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len))
 581                         hostapd_logger(hapd, sta->addr,
 582                                        HOSTAPD_MODULE_WPA,
 583                                        HOSTAPD_LEVEL_DEBUG,
 584                                        "invalid WMM element in association "
 585                                        "request");
 586                 else
 587                         sta->flags |= WLAN_STA_WMM;
 588         }
 589         return WLAN_STATUS_SUCCESS;
 590 }
 591
 592
 593 static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta,
 594                            struct ieee802_11_elems *elems)
 595 {
 596         if (!elems->supp_rates) {
 597                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 598                                HOSTAPD_LEVEL_DEBUG,
 599                                "No supported rates element in AssocReq");
 600                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 601         }
 602
 603         if (elems->supp_rates_len > sizeof(sta->supported_rates)) {
 604                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 605                                HOSTAPD_LEVEL_DEBUG,
 606                                "Invalid supported rates element length %d",
 607                                elems->supp_rates_len);
 608                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 609         }
 610
 611         os_memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
 612         os_memcpy(sta->supported_rates, elems->supp_rates,
 613                   elems->supp_rates_len);
 614         sta->supported_rates_len = elems->supp_rates_len;
 615
 616         if (elems->ext_supp_rates) {
 617                 if (elems->supp_rates_len + elems->ext_supp_rates_len >
 618                     sizeof(sta->supported_rates)) {
 619                         hostapd_logger(hapd, sta->addr,
 620                                        HOSTAPD_MODULE_IEEE80211,
 621                                        HOSTAPD_LEVEL_DEBUG,
 622                                        "Invalid supported rates element length"
 623                                        " %d+%d", elems->supp_rates_len,
 624                                        elems->ext_supp_rates_len);
 625                         return WLAN_STATUS_UNSPECIFIED_FAILURE;
 626                 }
 627
 628                 os_memcpy(sta->supported_rates + elems->supp_rates_len,
 629                           elems->ext_supp_rates, elems->ext_supp_rates_len);
 630                 sta->supported_rates_len += elems->ext_supp_rates_len;
 631         }
 632
 633         return WLAN_STATUS_SUCCESS;
 634 }
 635
 636
 637 static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta,
 638                            const u8 *ies, size_t ies_len, int reassoc)
 639 {
 640         struct ieee802_11_elems elems;
 641         u16 resp;
 642         const u8 *wpa_ie;
 643         size_t wpa_ie_len;
 644
 645         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) {
 646                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 647                                HOSTAPD_LEVEL_INFO, "Station sent an invalid "
 648                                "association request");
 649                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 650         }
 651
 652         resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len);
 653         if (resp != WLAN_STATUS_SUCCESS)
 654                 return resp;
 655         resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len);
 656         if (resp != WLAN_STATUS_SUCCESS)
 657                 return resp;
 658         resp = copy_supp_rates(hapd, sta, &elems);
 659         if (resp != WLAN_STATUS_SUCCESS)
 660                 return resp;
 661 #ifdef CONFIG_IEEE80211N
 662         resp = copy_sta_ht_capab(sta, elems.ht_capabilities,
 663                                  elems.ht_capabilities_len);
 664         if (resp != WLAN_STATUS_SUCCESS)
 665                 return resp;
 666 #endif /* CONFIG_IEEE80211N */
 667
 668         if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
 669                 wpa_ie = elems.rsn_ie;
 670                 wpa_ie_len = elems.rsn_ie_len;
 671         } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
 672                    elems.wpa_ie) {
 673                 wpa_ie = elems.wpa_ie;
 674                 wpa_ie_len = elems.wpa_ie_len;
 675         } else {
 676                 wpa_ie = NULL;
 677                 wpa_ie_len = 0;
 678         }
 679
 680 #ifdef CONFIG_WPS
 681         sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS);
 682         if (hapd->conf->wps_state && wpa_ie == NULL) {
 683                 if (elems.wps_ie) {
 684                         wpa_printf(MSG_DEBUG, "STA included WPS IE in "
 685                                    "(Re)Association Request - assume WPS is "
 686                                    "used");
 687                         sta->flags |= WLAN_STA_WPS;
 688                         wpabuf_free(sta->wps_ie);
 689                         sta->wps_ie = wpabuf_alloc_copy(elems.wps_ie + 4,
 690                                                         elems.wps_ie_len - 4);
 691                 } else {
 692                         wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE "
 693                                    "in (Re)Association Request - possible WPS "
 694                                    "use");
 695                         sta->flags |= WLAN_STA_MAYBE_WPS;
 696                 }
 697         } else
 698 #endif /* CONFIG_WPS */
 699         if (hapd->conf->wpa && wpa_ie == NULL) {
 700                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 701                                HOSTAPD_LEVEL_INFO,
 702                                "No WPA/RSN IE in association request");
 703                 return WLAN_STATUS_INVALID_IE;
 704         }
 705
 706         if (hapd->conf->wpa && wpa_ie) {
 707                 int res;
 708                 wpa_ie -= 2;
 709                 wpa_ie_len += 2;
 710                 if (sta->wpa_sm == NULL)
 711                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
 712                                                         sta->addr);
 713                 if (sta->wpa_sm == NULL) {
 714                         wpa_printf(MSG_WARNING, "Failed to initialize WPA "
 715                                    "state machine");
 716                         return WLAN_STATUS_UNSPECIFIED_FAILURE;
 717                 }
 718                 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
 719                                           wpa_ie, wpa_ie_len,
 720                                           elems.mdie, elems.mdie_len);
 721                 if (res == WPA_INVALID_GROUP)
 722                         resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
 723                 else if (res == WPA_INVALID_PAIRWISE)
 724                         resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
 725                 else if (res == WPA_INVALID_AKMP)
 726                         resp = WLAN_STATUS_AKMP_NOT_VALID;
 727                 else if (res == WPA_ALLOC_FAIL)
 728                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 729 #ifdef CONFIG_IEEE80211W
 730                 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
 731                         resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
 732                 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
 733                         resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
 734 #endif /* CONFIG_IEEE80211W */
 735                 else if (res == WPA_INVALID_MDIE)
 736                         resp = WLAN_STATUS_INVALID_MDIE;
 737                 else if (res != WPA_IE_OK)
 738                         resp = WLAN_STATUS_INVALID_IE;
 739                 if (resp != WLAN_STATUS_SUCCESS)
 740                         return resp;
 741 #ifdef CONFIG_IEEE80211W
 742                 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
 743                     sta->sa_query_count > 0)
 744                         ap_check_sa_query_timeout(hapd, sta);
 745                 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
 746                     (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) {
 747                         /*
 748                          * STA has already been associated with MFP and SA
 749                          * Query timeout has not been reached. Reject the
 750                          * association attempt temporarily and start SA Query,
 751                          * if one is not pending.
 752                          */
 753
 754                         if (sta->sa_query_count == 0)
 755                                 ap_sta_start_sa_query(hapd, sta);
 756
 757                         return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
 758                 }
 759
 760                 if (wpa_auth_uses_mfp(sta->wpa_sm))
 761                         sta->flags |= WLAN_STA_MFP;
 762                 else
 763                         sta->flags &= ~WLAN_STA_MFP;
 764 #endif /* CONFIG_IEEE80211W */
 765
 766 #ifdef CONFIG_IEEE80211R
 767                 if (sta->auth_alg == WLAN_AUTH_FT) {
 768                         if (!reassoc) {
 769                                 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
 770                                            "to use association (not "
 771                                            "re-association) with FT auth_alg",
 772                                            MAC2STR(sta->addr));
 773                                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 774                         }
 775
 776                         resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies,
 777                                                        ies_len);
 778                         if (resp != WLAN_STATUS_SUCCESS)
 779                                 return resp;
 780                 }
 781 #endif /* CONFIG_IEEE80211R */
 782
 783 #ifdef CONFIG_IEEE80211N
 784                 if ((sta->flags & WLAN_STA_HT) &&
 785                     wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
 786                         hostapd_logger(hapd, sta->addr,
 787                                        HOSTAPD_MODULE_IEEE80211,
 788                                        HOSTAPD_LEVEL_INFO,
 789                                        "Station tried to use TKIP with HT "
 790                                        "association");
 791                         return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
 792                 }
 793 #endif /* CONFIG_IEEE80211N */
 794         } else
 795                 wpa_auth_sta_no_wpa(sta->wpa_sm);
 796
 797         return WLAN_STATUS_SUCCESS;
 798 }
 799
 800
 801 static void send_deauth(struct hostapd_data *hapd, const u8 *addr,
 802                         u16 reason_code)
 803 {
 804         int send_len;
 805         struct ieee80211_mgmt reply;
 806
 807         os_memset(&reply, 0, sizeof(reply));
 808         reply.frame_control =
 809                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH);
 810         os_memcpy(reply.da, addr, ETH_ALEN);
 811         os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN);
 812         os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN);
 813
 814         send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth);
 815         reply.u.deauth.reason_code = host_to_le16(reason_code);
 816
 817         if (hapd->drv.send_mgmt_frame(hapd, &reply, send_len) < 0)
 818                 wpa_printf(MSG_INFO, "Failed to send deauth: %s",
 819                            strerror(errno));
 820 }
 821
 822
 823 static void send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta,
 824                             u16 status_code, int reassoc, const u8 *ies,
 825                             size_t ies_len)
 826 {
 827         int send_len;
 828         u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
 829         struct ieee80211_mgmt *reply;
 830         u8 *p;
 831
 832         os_memset(buf, 0, sizeof(buf));
 833         reply = (struct ieee80211_mgmt *) buf;
 834         reply->frame_control =
 835                 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 836                              (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
 837                               WLAN_FC_STYPE_ASSOC_RESP));
 838         os_memcpy(reply->da, sta->addr, ETH_ALEN);
 839         os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
 840         os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN);
 841
 842         send_len = IEEE80211_HDRLEN;
 843         send_len += sizeof(reply->u.assoc_resp);
 844         reply->u.assoc_resp.capab_info =
 845                 host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
 846         reply->u.assoc_resp.status_code = host_to_le16(status_code);
 847         reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
 848                                                | BIT(14) | BIT(15));
 849         /* Supported rates */
 850         p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
 851         /* Extended supported rates */
 852         p = hostapd_eid_ext_supp_rates(hapd, p);
 853         if (sta->flags & WLAN_STA_WMM)
 854                 p = hostapd_eid_wmm(hapd, p);
 855
 856 #ifdef CONFIG_IEEE80211N
 857         p = hostapd_eid_ht_capabilities(hapd, p);
 858         p = hostapd_eid_ht_operation(hapd, p);
 859 #endif /* CONFIG_IEEE80211N */
 860
 861 #ifdef CONFIG_IEEE80211R
 862         if (status_code == WLAN_STATUS_SUCCESS) {
 863                 /* IEEE 802.11r: Mobility Domain Information, Fast BSS
 864                  * Transition Information, RSN, [RIC Response] */
 865                 p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
 866                                                 buf + sizeof(buf) - p,
 867                                                 sta->auth_alg, ies, ies_len);
 868         }
 869 #endif /* CONFIG_IEEE80211R */
 870
 871 #ifdef CONFIG_IEEE80211W
 872         if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
 873                 p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
 874 #endif /* CONFIG_IEEE80211W */
 875
 876         send_len += p - reply->u.assoc_resp.variable;
 877
 878         if (hapd->drv.send_mgmt_frame(hapd, reply, send_len) < 0)
 879                 wpa_printf(MSG_INFO, "Failed to send assoc resp: %s",
 880                            strerror(errno));
 881 }
 882
 883
 884 static void handle_assoc(struct hostapd_data *hapd,
 885                          const struct ieee80211_mgmt *mgmt, size_t len,
 886                          int reassoc)
 887 {
 888         u16 capab_info, listen_interval;
 889         u16 resp = WLAN_STATUS_SUCCESS;
 890         const u8 *pos;
 891         int left, i;
 892         struct sta_info *sta;
 893
 894         if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
 895                                       sizeof(mgmt->u.assoc_req))) {
 896                 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
 897                        "\n", reassoc, (unsigned long) len);
 898                 return;
 899         }
 900
 901         if (reassoc) {
 902                 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
 903                 listen_interval = le_to_host16(
 904                         mgmt->u.reassoc_req.listen_interval);
 905                 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
 906                            " capab_info=0x%02x listen_interval=%d current_ap="
 907                            MACSTR,
 908                            MAC2STR(mgmt->sa), capab_info, listen_interval,
 909                            MAC2STR(mgmt->u.reassoc_req.current_ap));
 910                 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
 911                 pos = mgmt->u.reassoc_req.variable;
 912         } else {
 913                 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
 914                 listen_interval = le_to_host16(
 915                         mgmt->u.assoc_req.listen_interval);
 916                 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
 917                            " capab_info=0x%02x listen_interval=%d",
 918                            MAC2STR(mgmt->sa), capab_info, listen_interval);
 919                 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
 920                 pos = mgmt->u.assoc_req.variable;
 921         }
 922
 923         sta = ap_get_sta(hapd, mgmt->sa);
 924 #ifdef CONFIG_IEEE80211R
 925         if (sta && sta->auth_alg == WLAN_AUTH_FT &&
 926             (sta->flags & WLAN_STA_AUTH) == 0) {
 927                 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
 928                            "prior to authentication since it is using "
 929                            "over-the-DS FT", MAC2STR(mgmt->sa));
 930         } else
 931 #endif /* CONFIG_IEEE80211R */
 932         if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
 933                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
 934                                HOSTAPD_LEVEL_INFO, "Station tried to "
 935                                "associate before authentication "
 936                                "(aid=%d flags=0x%x)",
 937                                sta ? sta->aid : -1,
 938                                sta ? sta->flags : 0);
 939                 send_deauth(hapd, mgmt->sa,
 940                             WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA);
 941                 return;
 942         }
 943
 944         if (hapd->tkip_countermeasures) {
 945                 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
 946                 goto fail;
 947         }
 948
 949         if (listen_interval > hapd->conf->max_listen_interval) {
 950                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
 951                                HOSTAPD_LEVEL_DEBUG,
 952                                "Too large Listen Interval (%d)",
 953                                listen_interval);
 954                 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
 955                 goto fail;
 956         }
 957
 958         /* followed by SSID and Supported rates; and HT capabilities if 802.11n
 959          * is used */
 960         resp = check_assoc_ies(hapd, sta, pos, left, reassoc);
 961         if (resp != WLAN_STATUS_SUCCESS)
 962                 goto fail;
 963
 964         if (hostapd_get_aid(hapd, sta) < 0) {
 965                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
 966                                HOSTAPD_LEVEL_INFO, "No room for more AIDs");
 967                 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
 968                 goto fail;
 969         }
 970
 971         sta->capability = capab_info;
 972         sta->listen_interval = listen_interval;
 973
 974         if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
 975                 sta->flags |= WLAN_STA_NONERP;
 976         for (i = 0; i < sta->supported_rates_len; i++) {
 977                 if ((sta->supported_rates[i] & 0x7f) > 22) {
 978                         sta->flags &= ~WLAN_STA_NONERP;
 979                         break;
 980                 }
 981         }
 982         if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
 983                 sta->nonerp_set = 1;
 984                 hapd->iface->num_sta_non_erp++;
 985                 if (hapd->iface->num_sta_non_erp == 1)
 986                         ieee802_11_set_beacons(hapd->iface);
 987         }
 988
 989         if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
 990             !sta->no_short_slot_time_set) {
 991                 sta->no_short_slot_time_set = 1;
 992                 hapd->iface->num_sta_no_short_slot_time++;
 993                 if (hapd->iface->current_mode->mode ==
 994                     HOSTAPD_MODE_IEEE80211G &&
 995                     hapd->iface->num_sta_no_short_slot_time == 1)
 996                         ieee802_11_set_beacons(hapd->iface);
 997         }
 998
 999         if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1000                 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
1001         else
1002                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
1003
1004         if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
1005             !sta->no_short_preamble_set) {
1006                 sta->no_short_preamble_set = 1;
1007                 hapd->iface->num_sta_no_short_preamble++;
1008                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
1009                     && hapd->iface->num_sta_no_short_preamble == 1)
1010                         ieee802_11_set_beacons(hapd->iface);
1011         }
1012
1013 #ifdef CONFIG_IEEE80211N
1014         update_ht_state(hapd, sta);
1015 #endif /* CONFIG_IEEE80211N */
1016
1017         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1018                        HOSTAPD_LEVEL_DEBUG,
1019                        "association OK (aid %d)", sta->aid);
1020         /* Station will be marked associated, after it acknowledges AssocResp
1021          */
1022
1023 #ifdef CONFIG_IEEE80211W
1024         if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) {
1025                 wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out "
1026                            "SA Query procedure", reassoc ? "re" : "");
1027                 /* TODO: Send a protected Disassociate frame to the STA using
1028                  * the old key and Reason Code "Previous Authentication no
1029                  * longer valid". Make sure this is only sent protected since
1030                  * unprotected frame would be received by the STA that is now
1031                  * trying to associate.
1032                  */
1033         }
1034 #endif /* CONFIG_IEEE80211W */
1035
1036         if (reassoc) {
1037                 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
1038                           ETH_ALEN);
1039         }
1040
1041         if (sta->last_assoc_req)
1042                 os_free(sta->last_assoc_req);
1043         sta->last_assoc_req = os_malloc(len);
1044         if (sta->last_assoc_req)
1045                 os_memcpy(sta->last_assoc_req, mgmt, len);
1046
1047         /* Make sure that the previously registered inactivity timer will not
1048          * remove the STA immediately. */
1049         sta->timeout_next = STA_NULLFUNC;
1050
1051  fail:
1052         send_assoc_resp(hapd, sta, resp, reassoc, pos, left);
1053 }
1054
1055
1056 static void handle_disassoc(struct hostapd_data *hapd,
1057                             const struct ieee80211_mgmt *mgmt, size_t len)
1058 {
1059         struct sta_info *sta;
1060
1061         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
1062                 printf("handle_disassoc - too short payload (len=%lu)\n",
1063                        (unsigned long) len);
1064                 return;
1065         }
1066
1067         wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
1068                    MAC2STR(mgmt->sa),
1069                    le_to_host16(mgmt->u.disassoc.reason_code));
1070
1071         sta = ap_get_sta(hapd, mgmt->sa);
1072         if (sta == NULL) {
1073                 printf("Station " MACSTR " trying to disassociate, but it "
1074                        "is not associated.\n", MAC2STR(mgmt->sa));
1075                 return;
1076         }
1077
1078         sta->flags &= ~WLAN_STA_ASSOC;
1079         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED MACSTR,
1080                 MAC2STR(sta->addr));
1081         wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
1082         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1083                        HOSTAPD_LEVEL_INFO, "disassociated");
1084         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1085         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1086         /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
1087          * authenticated. */
1088         accounting_sta_stop(hapd, sta);
1089         ieee802_1x_free_station(sta);
1090         hapd->drv.sta_remove(hapd, sta->addr);
1091
1092         if (sta->timeout_next == STA_NULLFUNC ||
1093             sta->timeout_next == STA_DISASSOC) {
1094                 sta->timeout_next = STA_DEAUTH;
1095                 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1096                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
1097                                        hapd, sta);
1098         }
1099
1100         mlme_disassociate_indication(
1101                 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
1102 }
1103
1104
1105 static void handle_deauth(struct hostapd_data *hapd,
1106                           const struct ieee80211_mgmt *mgmt, size_t len)
1107 {
1108         struct sta_info *sta;
1109
1110         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
1111                 printf("handle_deauth - too short payload (len=%lu)\n",
1112                        (unsigned long) len);
1113                 return;
1114         }
1115
1116         wpa_printf(MSG_DEBUG, "deauthentication: STA=" MACSTR
1117                    " reason_code=%d",
1118                    MAC2STR(mgmt->sa),
1119                    le_to_host16(mgmt->u.deauth.reason_code));
1120
1121         sta = ap_get_sta(hapd, mgmt->sa);
1122         if (sta == NULL) {
1123                 printf("Station " MACSTR " trying to deauthenticate, but it "
1124                        "is not authenticated.\n", MAC2STR(mgmt->sa));
1125                 return;
1126         }
1127
1128         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
1129         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED MACSTR,
1130                 MAC2STR(sta->addr));
1131         wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1132         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1133                        HOSTAPD_LEVEL_DEBUG, "deauthenticated");
1134         mlme_deauthenticate_indication(
1135                 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
1136         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1137         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1138         ap_free_sta(hapd, sta);
1139 }
1140
1141
1142 static void handle_beacon(struct hostapd_data *hapd,
1143                           const struct ieee80211_mgmt *mgmt, size_t len,
1144                           struct hostapd_frame_info *fi)
1145 {
1146         struct ieee802_11_elems elems;
1147
1148         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
1149                 printf("handle_beacon - too short payload (len=%lu)\n",
1150                        (unsigned long) len);
1151                 return;
1152         }
1153
1154         (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
1155                                       len - (IEEE80211_HDRLEN +
1156                                              sizeof(mgmt->u.beacon)), &elems,
1157                                       0);
1158
1159         ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
1160 }
1161
1162
1163 #ifdef CONFIG_IEEE80211W
1164
1165 /* MLME-SAQuery.request */
1166 void ieee802_11_send_sa_query_req(struct hostapd_data *hapd,
1167                                   const u8 *addr, const u8 *trans_id)
1168 {
1169         struct ieee80211_mgmt mgmt;
1170         u8 *end;
1171
1172         wpa_printf(MSG_DEBUG, "IEEE 802.11: Sending SA Query Request to "
1173                    MACSTR, MAC2STR(addr));
1174         wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
1175                     trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1176
1177         os_memset(&mgmt, 0, sizeof(mgmt));
1178         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1179                                           WLAN_FC_STYPE_ACTION);
1180         os_memcpy(mgmt.da, addr, ETH_ALEN);
1181         os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
1182         os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
1183         mgmt.u.action.category = WLAN_ACTION_SA_QUERY;
1184         mgmt.u.action.u.sa_query_req.action = WLAN_SA_QUERY_REQUEST;
1185         os_memcpy(mgmt.u.action.u.sa_query_req.trans_id, trans_id,
1186                   WLAN_SA_QUERY_TR_ID_LEN);
1187         end = mgmt.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN;
1188         if (hapd->drv.send_mgmt_frame(hapd, &mgmt, end - (u8 *) &mgmt) < 0)
1189                 perror("ieee802_11_send_sa_query_req: send");
1190 }
1191
1192
1193 static void hostapd_sa_query_action(struct hostapd_data *hapd,
1194                                     const struct ieee80211_mgmt *mgmt,
1195                                     size_t len)
1196 {
1197         struct sta_info *sta;
1198         const u8 *end;
1199         int i;
1200
1201         end = mgmt->u.action.u.sa_query_resp.trans_id +
1202                 WLAN_SA_QUERY_TR_ID_LEN;
1203         if (((u8 *) mgmt) + len < end) {
1204                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action "
1205                            "frame (len=%lu)", (unsigned long) len);
1206                 return;
1207         }
1208
1209         if (mgmt->u.action.u.sa_query_resp.action != WLAN_SA_QUERY_RESPONSE) {
1210                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Unexpected SA Query "
1211                            "Action %d", mgmt->u.action.u.sa_query_resp.action);
1212                 return;
1213         }
1214
1215         wpa_printf(MSG_DEBUG, "IEEE 802.11: Received SA Query Response from "
1216                    MACSTR, MAC2STR(mgmt->sa));
1217         wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
1218                     mgmt->u.action.u.sa_query_resp.trans_id,
1219                     WLAN_SA_QUERY_TR_ID_LEN);
1220
1221         /* MLME-SAQuery.confirm */
1222
1223         sta = ap_get_sta(hapd, mgmt->sa);
1224         if (sta == NULL || sta->sa_query_trans_id == NULL) {
1225                 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching STA with "
1226                            "pending SA Query request found");
1227                 return;
1228         }
1229
1230         for (i = 0; i < sta->sa_query_count; i++) {
1231                 if (os_memcmp(sta->sa_query_trans_id +
1232                               i * WLAN_SA_QUERY_TR_ID_LEN,
1233                               mgmt->u.action.u.sa_query_resp.trans_id,
1234                               WLAN_SA_QUERY_TR_ID_LEN) == 0)
1235                         break;
1236         }
1237
1238         if (i >= sta->sa_query_count) {
1239                 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching SA Query "
1240                            "transaction identifier found");
1241                 return;
1242         }
1243
1244         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1245                        HOSTAPD_LEVEL_DEBUG,
1246                        "Reply to pending SA Query received");
1247         ap_sta_stop_sa_query(hapd, sta);
1248 }
1249
1250
1251 static int robust_action_frame(u8 category)
1252 {
1253         return category != WLAN_ACTION_PUBLIC &&
1254                 category != WLAN_ACTION_HT;
1255 }
1256 #endif /* CONFIG_IEEE80211W */
1257
1258
1259 static void handle_action(struct hostapd_data *hapd,
1260                           const struct ieee80211_mgmt *mgmt, size_t len)
1261 {
1262         struct sta_info *sta;
1263
1264         if (len < IEEE80211_HDRLEN + 1) {
1265                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1266                                HOSTAPD_LEVEL_DEBUG,
1267                                "handle_action - too short payload (len=%lu)",
1268                                (unsigned long) len);
1269                 return;
1270         }
1271
1272         sta = ap_get_sta(hapd, mgmt->sa);
1273 #ifdef CONFIG_IEEE80211W
1274         if (sta && (sta->flags & WLAN_STA_MFP) &&
1275             !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP) &&
1276               robust_action_frame(mgmt->u.action.category))) {
1277                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1278                                HOSTAPD_LEVEL_DEBUG,
1279                                "Dropped unprotected Robust Action frame from "
1280                                "an MFP STA");
1281                 return;
1282         }
1283 #endif /* CONFIG_IEEE80211W */
1284
1285         switch (mgmt->u.action.category) {
1286 #ifdef CONFIG_IEEE80211R
1287         case WLAN_ACTION_FT:
1288         {
1289                 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
1290                         wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored FT Action "
1291                                    "frame from unassociated STA " MACSTR,
1292                                    MAC2STR(mgmt->sa));
1293                         return;
1294                 }
1295
1296                 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
1297                                      len - IEEE80211_HDRLEN))
1298                         break;
1299
1300                 return;
1301         }
1302 #endif /* CONFIG_IEEE80211R */
1303         case WLAN_ACTION_WMM:
1304                 hostapd_wmm_action(hapd, mgmt, len);
1305                 return;
1306 #ifdef CONFIG_IEEE80211W
1307         case WLAN_ACTION_SA_QUERY:
1308                 hostapd_sa_query_action(hapd, mgmt, len);
1309                 return;
1310 #endif /* CONFIG_IEEE80211W */
1311         }
1312
1313         hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1314                        HOSTAPD_LEVEL_DEBUG,
1315                        "handle_action - unknown action category %d or invalid "
1316                        "frame",
1317                        mgmt->u.action.category);
1318         if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
1319             !(mgmt->sa[0] & 0x01)) {
1320                 struct ieee80211_mgmt *resp;
1321
1322                 /*
1323                  * IEEE 802.11-REVma/D9.0 - 7.3.1.11
1324                  * Return the Action frame to the source without change
1325                  * except that MSB of the Category set to 1.
1326                  */
1327                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
1328                            "frame back to sender");
1329                 resp = os_malloc(len);
1330                 if (resp == NULL)
1331                         return;
1332                 os_memcpy(resp, mgmt, len);
1333                 os_memcpy(resp->da, resp->sa, ETH_ALEN);
1334                 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
1335                 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
1336                 resp->u.action.category |= 0x80;
1337
1338                 hapd->drv.send_mgmt_frame(hapd, resp, len);
1339                 os_free(resp);
1340         }
1341 }
1342
1343
1344 /**
1345  * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
1346  * @hapd: hostapd BSS data structure (the BSS to which the management frame was
1347  * sent to)
1348  * @buf: management frame data (starting from IEEE 802.11 header)
1349  * @len: length of frame data in octets
1350  * @fi: meta data about received frame (signal level, etc.)
1351  *
1352  * Process all incoming IEEE 802.11 management frames. This will be called for
1353  * each frame received from the kernel driver through wlan#ap interface. In
1354  * addition, it can be called to re-inserted pending frames (e.g., when using
1355  * external RADIUS server as an MAC ACL).
1356  */
1357 void ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len,
1358                      struct hostapd_frame_info *fi)
1359 {
1360         struct ieee80211_mgmt *mgmt;
1361         int broadcast;
1362         u16 fc, stype;
1363
1364         mgmt = (struct ieee80211_mgmt *) buf;
1365         fc = le_to_host16(mgmt->frame_control);
1366         stype = WLAN_FC_GET_STYPE(fc);
1367
1368         if (stype == WLAN_FC_STYPE_BEACON) {
1369                 handle_beacon(hapd, mgmt, len, fi);
1370                 return;
1371         }
1372
1373         broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
1374                 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
1375                 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
1376
1377         if (!broadcast &&
1378             os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
1379                 printf("MGMT: BSSID=" MACSTR " not our address\n",
1380                        MAC2STR(mgmt->bssid));
1381                 return;
1382         }
1383
1384
1385         if (stype == WLAN_FC_STYPE_PROBE_REQ) {
1386                 handle_probe_req(hapd, mgmt, len);
1387                 return;
1388         }
1389
1390         if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
1391                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1392                                HOSTAPD_LEVEL_DEBUG,
1393                                "MGMT: DA=" MACSTR " not our address",
1394                                MAC2STR(mgmt->da));
1395                 return;
1396         }
1397
1398         switch (stype) {
1399         case WLAN_FC_STYPE_AUTH:
1400                 wpa_printf(MSG_DEBUG, "mgmt::auth");
1401                 handle_auth(hapd, mgmt, len);
1402                 break;
1403         case WLAN_FC_STYPE_ASSOC_REQ:
1404                 wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
1405                 handle_assoc(hapd, mgmt, len, 0);
1406                 break;
1407         case WLAN_FC_STYPE_REASSOC_REQ:
1408                 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
1409                 handle_assoc(hapd, mgmt, len, 1);
1410                 break;
1411         case WLAN_FC_STYPE_DISASSOC:
1412                 wpa_printf(MSG_DEBUG, "mgmt::disassoc");
1413                 handle_disassoc(hapd, mgmt, len);
1414                 break;
1415         case WLAN_FC_STYPE_DEAUTH:
1416                 wpa_printf(MSG_DEBUG, "mgmt::deauth");
1417                 handle_deauth(hapd, mgmt, len);
1418                 break;
1419         case WLAN_FC_STYPE_ACTION:
1420                 wpa_printf(MSG_DEBUG, "mgmt::action");
1421                 handle_action(hapd, mgmt, len);
1422                 break;
1423         default:
1424                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1425                                HOSTAPD_LEVEL_DEBUG,
1426                                "unknown mgmt frame subtype %d", stype);
1427                 break;
1428         }
1429 }
1430
1431
1432 static void handle_auth_cb(struct hostapd_data *hapd,
1433                            const struct ieee80211_mgmt *mgmt,
1434                            size_t len, int ok)
1435 {
1436         u16 auth_alg, auth_transaction, status_code;
1437         struct sta_info *sta;
1438
1439         if (!ok) {
1440                 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1441                                HOSTAPD_LEVEL_NOTICE,
1442                                "did not acknowledge authentication response");
1443                 return;
1444         }
1445
1446         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
1447                 printf("handle_auth_cb - too short payload (len=%lu)\n",
1448                        (unsigned long) len);
1449                 return;
1450         }
1451
1452         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1453         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1454         status_code = le_to_host16(mgmt->u.auth.status_code);
1455
1456         sta = ap_get_sta(hapd, mgmt->da);
1457         if (!sta) {
1458                 printf("handle_auth_cb: STA " MACSTR " not found\n",
1459                        MAC2STR(mgmt->da));
1460                 return;
1461         }
1462
1463         if (status_code == WLAN_STATUS_SUCCESS &&
1464             ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
1465              (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
1466                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1467                                HOSTAPD_LEVEL_INFO, "authenticated");
1468                 sta->flags |= WLAN_STA_AUTH;
1469         }
1470 }
1471
1472
1473 static void handle_assoc_cb(struct hostapd_data *hapd,
1474                             const struct ieee80211_mgmt *mgmt,
1475                             size_t len, int reassoc, int ok)
1476 {
1477         u16 status;
1478         struct sta_info *sta;
1479         int new_assoc = 1;
1480         struct ieee80211_ht_capabilities ht_cap;
1481
1482         if (!ok) {
1483                 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1484                                HOSTAPD_LEVEL_DEBUG,
1485                                "did not acknowledge association response");
1486                 return;
1487         }
1488
1489         if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
1490                                       sizeof(mgmt->u.assoc_resp))) {
1491                 printf("handle_assoc_cb(reassoc=%d) - too short payload "
1492                        "(len=%lu)\n", reassoc, (unsigned long) len);
1493                 return;
1494         }
1495
1496         if (reassoc)
1497                 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
1498         else
1499                 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1500
1501         sta = ap_get_sta(hapd, mgmt->da);
1502         if (!sta) {
1503                 printf("handle_assoc_cb: STA " MACSTR " not found\n",
1504                        MAC2STR(mgmt->da));
1505                 return;
1506         }
1507
1508         if (status != WLAN_STATUS_SUCCESS)
1509                 goto fail;
1510
1511         /* Stop previous accounting session, if one is started, and allocate
1512          * new session id for the new session. */
1513         accounting_sta_stop(hapd, sta);
1514
1515         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1516                        HOSTAPD_LEVEL_INFO,
1517                        "associated (aid %d)",
1518                        sta->aid);
1519
1520         if (sta->flags & WLAN_STA_ASSOC)
1521                 new_assoc = 0;
1522         sta->flags |= WLAN_STA_ASSOC;
1523         if (!hapd->conf->ieee802_1x && !hapd->conf->wpa) {
1524                 /* Open or static WEP; no separate authorization */
1525                 sta->flags |= WLAN_STA_AUTHORIZED;
1526                 wpa_msg(hapd->msg_ctx, MSG_INFO,
1527                         AP_STA_CONNECTED MACSTR, MAC2STR(sta->addr));
1528         }
1529
1530         if (reassoc)
1531                 mlme_reassociate_indication(hapd, sta);
1532         else
1533                 mlme_associate_indication(hapd, sta);
1534
1535 #ifdef CONFIG_IEEE80211W
1536         sta->sa_query_timed_out = 0;
1537 #endif /* CONFIG_IEEE80211W */
1538
1539         /*
1540          * Remove the STA entry in order to make sure the STA PS state gets
1541          * cleared and configuration gets updated in case of reassociation back
1542          * to the same AP.
1543          */
1544         hapd->drv.sta_remove(hapd, sta->addr);
1545
1546 #ifdef CONFIG_IEEE80211N
1547         if (sta->flags & WLAN_STA_HT)
1548                 hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap);
1549 #endif /* CONFIG_IEEE80211N */
1550
1551         if (hapd->drv.sta_add(hapd->conf->iface, hapd, sta->addr, sta->aid,
1552                               sta->capability, sta->supported_rates,
1553                               sta->supported_rates_len, sta->listen_interval,
1554                               sta->flags & WLAN_STA_HT ? &ht_cap : NULL)) {
1555                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1556                                HOSTAPD_LEVEL_NOTICE,
1557                                "Could not add STA to kernel driver");
1558         }
1559
1560         if (sta->eapol_sm == NULL) {
1561                 /*
1562                  * This STA does not use RADIUS server for EAP authentication,
1563                  * so bind it to the selected VLAN interface now, since the
1564                  * interface selection is not going to change anymore.
1565                  */
1566                 ap_sta_bind_vlan(hapd, sta, 0);
1567         } else if (sta->vlan_id) {
1568                 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
1569                 ap_sta_bind_vlan(hapd, sta, 0);
1570         }
1571
1572         hapd->drv.set_sta_flags(hapd, sta);
1573
1574         if (sta->auth_alg == WLAN_AUTH_FT)
1575                 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
1576         else
1577                 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
1578         hapd->new_assoc_sta_cb(hapd, sta, !new_assoc);
1579
1580         ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
1581
1582  fail:
1583         /* Copy of the association request is not needed anymore */
1584         if (sta->last_assoc_req) {
1585                 os_free(sta->last_assoc_req);
1586                 sta->last_assoc_req = NULL;
1587         }
1588 }
1589
1590
1591 /**
1592  * ieee802_11_mgmt_cb - Process management frame TX status callback
1593  * @hapd: hostapd BSS data structure (the BSS from which the management frame
1594  * was sent from)
1595  * @buf: management frame data (starting from IEEE 802.11 header)
1596  * @len: length of frame data in octets
1597  * @stype: management frame subtype from frame control field
1598  * @ok: Whether the frame was ACK'ed
1599  */
1600 void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len,
1601                         u16 stype, int ok)
1602 {
1603         const struct ieee80211_mgmt *mgmt;
1604         mgmt = (const struct ieee80211_mgmt *) buf;
1605
1606         switch (stype) {
1607         case WLAN_FC_STYPE_AUTH:
1608                 wpa_printf(MSG_DEBUG, "mgmt::auth cb");
1609                 handle_auth_cb(hapd, mgmt, len, ok);
1610                 break;
1611         case WLAN_FC_STYPE_ASSOC_RESP:
1612                 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
1613                 handle_assoc_cb(hapd, mgmt, len, 0, ok);
1614                 break;
1615         case WLAN_FC_STYPE_REASSOC_RESP:
1616                 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
1617                 handle_assoc_cb(hapd, mgmt, len, 1, ok);
1618                 break;
1619         case WLAN_FC_STYPE_PROBE_RESP:
1620                 wpa_printf(MSG_DEBUG, "mgmt::proberesp cb");
1621                 break;
1622         case WLAN_FC_STYPE_DEAUTH:
1623                 /* ignore */
1624                 break;
1625         case WLAN_FC_STYPE_ACTION:
1626                 wpa_printf(MSG_DEBUG, "mgmt::action cb");
1627                 break;
1628         default:
1629                 printf("unknown mgmt cb frame subtype %d\n", stype);
1630                 break;
1631         }
1632 }
1633
1634
1635 int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
1636 {
1637         /* TODO */
1638         return 0;
1639 }
1640
1641
1642 int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
1643                            char *buf, size_t buflen)
1644 {
1645         /* TODO */
1646         return 0;
1647 }
1648
1649
1650 void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
1651                        const u8 *buf, size_t len, int ack)
1652 {
1653         struct sta_info *sta;
1654         struct hostapd_iface *iface = hapd->iface;
1655
1656         sta = ap_get_sta(hapd, addr);
1657         if (sta == NULL && iface->num_bss > 1) {
1658                 size_t j;
1659                 for (j = 0; j < iface->num_bss; j++) {
1660                         hapd = iface->bss[j];
1661                         sta = ap_get_sta(hapd, addr);
1662                         if (sta)
1663                                 break;
1664                 }
1665         }
1666         if (sta == NULL)
1667                 return;
1668         if (sta->flags & WLAN_STA_PENDING_POLL) {
1669                 wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
1670                            "activity poll", MAC2STR(sta->addr),
1671                            ack ? "ACKed" : "did not ACK");
1672                 if (ack)
1673                         sta->flags &= ~WLAN_STA_PENDING_POLL;
1674         }
1675
1676         ieee802_1x_tx_status(hapd, sta, buf, len, ack);
1677 }
1678
1679
1680 void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src,
1681                                 int wds)
1682 {
1683         struct sta_info *sta;
1684
1685         sta = ap_get_sta(hapd, src);
1686         if (sta && (sta->flags & WLAN_STA_ASSOC)) {
1687                 if (wds && !(sta->flags & WLAN_STA_WDS)) {
1688                         wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for "
1689                                    "STA " MACSTR " (aid %u)",
1690                                    MAC2STR(sta->addr), sta->aid);
1691                         sta->flags |= WLAN_STA_WDS;
1692                         hapd->drv.set_wds_sta(hapd, sta->addr, sta->aid, 1);
1693                 }
1694                 return;
1695         }
1696
1697         wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA "
1698                    MACSTR, MAC2STR(src));
1699         if (sta && (sta->flags & WLAN_STA_AUTH))
1700                 hapd->drv.sta_disassoc(
1701                         hapd, src,
1702                         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1703         else
1704                 hapd->drv.sta_deauth(
1705                         hapd, src,
1706                         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1707 }
1708
1709
1710 #endif /* CONFIG_NATIVE_WINDOWS */