src/ap/ieee802_11.c

   1 /*
   2  * hostapd / IEEE 802.11 Management
   3  * Copyright (c) 2002-2011, 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/ieee802_11_defs.h"
  24 #include "common/ieee802_11_common.h"
  25 #include "common/wpa_ctrl.h"
  26 #include "radius/radius.h"
  27 #include "radius/radius_client.h"
  28 #include "p2p/p2p.h"
  29 #include "wps/wps.h"
  30 #include "hostapd.h"
  31 #include "beacon.h"
  32 #include "ieee802_11_auth.h"
  33 #include "sta_info.h"
  34 #include "ieee802_1x.h"
  35 #include "wpa_auth.h"
  36 #include "wmm.h"
  37 #include "ap_list.h"
  38 #include "accounting.h"
  39 #include "ap_config.h"
  40 #include "ap_mlme.h"
  41 #include "p2p_hostapd.h"
  42 #include "ap_drv_ops.h"
  43 #include "ieee802_11.h"
  44
  45
  46 u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
  47 {
  48         u8 *pos = eid;
  49         int i, num, count;
  50
  51         if (hapd->iface->current_rates == NULL)
  52                 return eid;
  53
  54         *pos++ = WLAN_EID_SUPP_RATES;
  55         num = hapd->iface->num_rates;
  56         if (hapd->iconf->ieee80211n && hapd->iconf->require_ht)
  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 &&
  76             hapd->iface->num_rates < 8)
  77                 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY;
  78
  79         return pos;
  80 }
  81
  82
  83 u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
  84 {
  85         u8 *pos = eid;
  86         int i, num, count;
  87
  88         if (hapd->iface->current_rates == NULL)
  89                 return eid;
  90
  91         num = hapd->iface->num_rates;
  92         if (hapd->iconf->ieee80211n && hapd->iconf->require_ht)
  93                 num++;
  94         if (num <= 8)
  95                 return eid;
  96         num -= 8;
  97
  98         *pos++ = WLAN_EID_EXT_SUPP_RATES;
  99         *pos++ = num;
 100         count = 0;
 101         for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
 102              i++) {
 103                 count++;
 104                 if (count <= 8)
 105                         continue; /* already in SuppRates IE */
 106                 *pos = hapd->iface->current_rates[i].rate / 5;
 107                 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
 108                         *pos |= 0x80;
 109                 pos++;
 110         }
 111
 112         if (hapd->iconf->ieee80211n && hapd->iconf->require_ht &&
 113             hapd->iface->num_rates >= 8)
 114                 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY;
 115
 116         return pos;
 117 }
 118
 119
 120 u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta,
 121                            int probe)
 122 {
 123         int capab = WLAN_CAPABILITY_ESS;
 124         int privacy;
 125
 126         if (hapd->iface->num_sta_no_short_preamble == 0 &&
 127             hapd->iconf->preamble == SHORT_PREAMBLE)
 128                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
 129
 130         privacy = hapd->conf->ssid.wep.keys_set;
 131
 132         if (hapd->conf->ieee802_1x &&
 133             (hapd->conf->default_wep_key_len ||
 134              hapd->conf->individual_wep_key_len))
 135                 privacy = 1;
 136
 137         if (hapd->conf->wpa)
 138                 privacy = 1;
 139
 140         if (sta) {
 141                 int policy, def_klen;
 142                 if (probe && sta->ssid_probe) {
 143                         policy = sta->ssid_probe->security_policy;
 144                         def_klen = sta->ssid_probe->wep.default_len;
 145                 } else {
 146                         policy = sta->ssid->security_policy;
 147                         def_klen = sta->ssid->wep.default_len;
 148                 }
 149                 privacy = policy != SECURITY_PLAINTEXT;
 150                 if (policy == SECURITY_IEEE_802_1X && def_klen == 0)
 151                         privacy = 0;
 152         }
 153
 154         if (privacy)
 155                 capab |= WLAN_CAPABILITY_PRIVACY;
 156
 157         if (hapd->iface->current_mode &&
 158             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
 159             hapd->iface->num_sta_no_short_slot_time == 0)
 160                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
 161
 162         return capab;
 163 }
 164
 165
 166 void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len)
 167 {
 168         int i;
 169         if (len > HOSTAPD_MAX_SSID_LEN)
 170                 len = HOSTAPD_MAX_SSID_LEN;
 171         for (i = 0; i < len; i++) {
 172                 if (ssid[i] >= 32 && ssid[i] < 127)
 173                         buf[i] = ssid[i];
 174                 else
 175                         buf[i] = '.';
 176         }
 177         buf[len] = '\0';
 178 }
 179
 180
 181 static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
 182                            u16 auth_transaction, const u8 *challenge,
 183                            int iswep)
 184 {
 185         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 186                        HOSTAPD_LEVEL_DEBUG,
 187                        "authentication (shared key, transaction %d)",
 188                        auth_transaction);
 189
 190         if (auth_transaction == 1) {
 191                 if (!sta->challenge) {
 192                         /* Generate a pseudo-random challenge */
 193                         u8 key[8];
 194                         struct os_time now;
 195                         int r;
 196                         sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
 197                         if (sta->challenge == NULL)
 198                                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 199
 200                         os_get_time(&now);
 201                         r = os_random();
 202                         os_memcpy(key, &now.sec, 4);
 203                         os_memcpy(key + 4, &r, 4);
 204                         rc4_skip(key, sizeof(key), 0,
 205                                  sta->challenge, WLAN_AUTH_CHALLENGE_LEN);
 206                 }
 207                 return 0;
 208         }
 209
 210         if (auth_transaction != 3)
 211                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 212
 213         /* Transaction 3 */
 214         if (!iswep || !sta->challenge || !challenge ||
 215             os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) {
 216                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 217                                HOSTAPD_LEVEL_INFO,
 218                                "shared key authentication - invalid "
 219                                "challenge-response");
 220                 return WLAN_STATUS_CHALLENGE_FAIL;
 221         }
 222
 223         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 224                        HOSTAPD_LEVEL_DEBUG,
 225                        "authentication OK (shared key)");
 226 #ifdef IEEE80211_REQUIRE_AUTH_ACK
 227         /* Station will be marked authenticated if it ACKs the
 228          * authentication reply. */
 229 #else
 230         sta->flags |= WLAN_STA_AUTH;
 231         wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
 232 #endif
 233         os_free(sta->challenge);
 234         sta->challenge = NULL;
 235
 236         return 0;
 237 }
 238
 239
 240 static void send_auth_reply(struct hostapd_data *hapd,
 241                             const u8 *dst, const u8 *bssid,
 242                             u16 auth_alg, u16 auth_transaction, u16 resp,
 243                             const u8 *ies, size_t ies_len)
 244 {
 245         struct ieee80211_mgmt *reply;
 246         u8 *buf;
 247         size_t rlen;
 248
 249         rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
 250         buf = os_zalloc(rlen);
 251         if (buf == NULL)
 252                 return;
 253
 254         reply = (struct ieee80211_mgmt *) buf;
 255         reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 256                                             WLAN_FC_STYPE_AUTH);
 257         os_memcpy(reply->da, dst, ETH_ALEN);
 258         os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
 259         os_memcpy(reply->bssid, bssid, ETH_ALEN);
 260
 261         reply->u.auth.auth_alg = host_to_le16(auth_alg);
 262         reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
 263         reply->u.auth.status_code = host_to_le16(resp);
 264
 265         if (ies && ies_len)
 266                 os_memcpy(reply->u.auth.variable, ies, ies_len);
 267
 268         wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
 269                    " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)",
 270                    MAC2STR(dst), auth_alg, auth_transaction,
 271                    resp, (unsigned long) ies_len);
 272         if (hostapd_drv_send_mlme(hapd, reply, rlen) < 0)
 273                 perror("send_auth_reply: send");
 274
 275         os_free(buf);
 276 }
 277
 278
 279 #ifdef CONFIG_IEEE80211R
 280 static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
 281                                   u16 auth_transaction, u16 status,
 282                                   const u8 *ies, size_t ies_len)
 283 {
 284         struct hostapd_data *hapd = ctx;
 285         struct sta_info *sta;
 286
 287         send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction,
 288                         status, ies, ies_len);
 289
 290         if (status != WLAN_STATUS_SUCCESS)
 291                 return;
 292
 293         sta = ap_get_sta(hapd, dst);
 294         if (sta == NULL)
 295                 return;
 296
 297         hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
 298                        HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
 299         sta->flags |= WLAN_STA_AUTH;
 300         mlme_authenticate_indication(hapd, sta);
 301 }
 302 #endif /* CONFIG_IEEE80211R */
 303
 304
 305 static void handle_auth(struct hostapd_data *hapd,
 306                         const struct ieee80211_mgmt *mgmt, size_t len)
 307 {
 308         u16 auth_alg, auth_transaction, status_code;
 309         u16 resp = WLAN_STATUS_SUCCESS;
 310         struct sta_info *sta = NULL;
 311         int res;
 312         u16 fc;
 313         const u8 *challenge = NULL;
 314         u32 session_timeout, acct_interim_interval;
 315         int vlan_id = 0;
 316         u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
 317         size_t resp_ies_len = 0;
 318
 319         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
 320                 printf("handle_auth - too short payload (len=%lu)\n",
 321                        (unsigned long) len);
 322                 return;
 323         }
 324
 325         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
 326         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
 327         status_code = le_to_host16(mgmt->u.auth.status_code);
 328         fc = le_to_host16(mgmt->frame_control);
 329
 330         if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
 331             2 + WLAN_AUTH_CHALLENGE_LEN &&
 332             mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
 333             mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
 334                 challenge = &mgmt->u.auth.variable[2];
 335
 336         wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
 337                    "auth_transaction=%d status_code=%d wep=%d%s",
 338                    MAC2STR(mgmt->sa), auth_alg, auth_transaction,
 339                    status_code, !!(fc & WLAN_FC_ISWEP),
 340                    challenge ? " challenge" : "");
 341
 342         if (hapd->tkip_countermeasures) {
 343                 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
 344                 goto fail;
 345         }
 346
 347         if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
 348                auth_alg == WLAN_AUTH_OPEN) ||
 349 #ifdef CONFIG_IEEE80211R
 350               (hapd->conf->wpa &&
 351                (hapd->conf->wpa_key_mgmt &
 352                 (WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK)) &&
 353                auth_alg == WLAN_AUTH_FT) ||
 354 #endif /* CONFIG_IEEE80211R */
 355               ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
 356                auth_alg == WLAN_AUTH_SHARED_KEY))) {
 357                 printf("Unsupported authentication algorithm (%d)\n",
 358                        auth_alg);
 359                 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
 360                 goto fail;
 361         }
 362
 363         if (!(auth_transaction == 1 ||
 364               (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
 365                 printf("Unknown authentication transaction number (%d)\n",
 366                        auth_transaction);
 367                 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
 368                 goto fail;
 369         }
 370
 371         if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
 372                 printf("Station " MACSTR " not allowed to authenticate.\n",
 373                        MAC2STR(mgmt->sa));
 374                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 375                 goto fail;
 376         }
 377
 378         res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
 379                                       &session_timeout,
 380                                       &acct_interim_interval, &vlan_id);
 381         if (res == HOSTAPD_ACL_REJECT) {
 382                 printf("Station " MACSTR " not allowed to authenticate.\n",
 383                        MAC2STR(mgmt->sa));
 384                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 385                 goto fail;
 386         }
 387         if (res == HOSTAPD_ACL_PENDING) {
 388                 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
 389                            " waiting for an external authentication",
 390                            MAC2STR(mgmt->sa));
 391                 /* Authentication code will re-send the authentication frame
 392                  * after it has received (and cached) information from the
 393                  * external source. */
 394                 return;
 395         }
 396
 397         sta = ap_sta_add(hapd, mgmt->sa);
 398         if (!sta) {
 399                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 400                 goto fail;
 401         }
 402
 403         if (vlan_id > 0) {
 404                 if (hostapd_get_vlan_id_ifname(hapd->conf->vlan,
 405                                                vlan_id) == NULL) {
 406                         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
 407                                        HOSTAPD_LEVEL_INFO, "Invalid VLAN ID "
 408                                        "%d received from RADIUS server",
 409                                        vlan_id);
 410                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 411                         goto fail;
 412                 }
 413                 sta->vlan_id = vlan_id;
 414                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
 415                                HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
 416         }
 417
 418         sta->flags &= ~WLAN_STA_PREAUTH;
 419         ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
 420
 421         if (hapd->conf->acct_interim_interval == 0 && acct_interim_interval)
 422                 sta->acct_interim_interval = acct_interim_interval;
 423         if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
 424                 ap_sta_session_timeout(hapd, sta, session_timeout);
 425         else
 426                 ap_sta_no_session_timeout(hapd, sta);
 427
 428         switch (auth_alg) {
 429         case WLAN_AUTH_OPEN:
 430                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 431                                HOSTAPD_LEVEL_DEBUG,
 432                                "authentication OK (open system)");
 433 #ifdef IEEE80211_REQUIRE_AUTH_ACK
 434                 /* Station will be marked authenticated if it ACKs the
 435                  * authentication reply. */
 436 #else
 437                 sta->flags |= WLAN_STA_AUTH;
 438                 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
 439                 sta->auth_alg = WLAN_AUTH_OPEN;
 440                 mlme_authenticate_indication(hapd, sta);
 441 #endif
 442                 break;
 443         case WLAN_AUTH_SHARED_KEY:
 444                 resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
 445                                        fc & WLAN_FC_ISWEP);
 446                 sta->auth_alg = WLAN_AUTH_SHARED_KEY;
 447                 mlme_authenticate_indication(hapd, sta);
 448                 if (sta->challenge && auth_transaction == 1) {
 449                         resp_ies[0] = WLAN_EID_CHALLENGE;
 450                         resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
 451                         os_memcpy(resp_ies + 2, sta->challenge,
 452                                   WLAN_AUTH_CHALLENGE_LEN);
 453                         resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
 454                 }
 455                 break;
 456 #ifdef CONFIG_IEEE80211R
 457         case WLAN_AUTH_FT:
 458                 sta->auth_alg = WLAN_AUTH_FT;
 459                 if (sta->wpa_sm == NULL)
 460                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
 461                                                         sta->addr);
 462                 if (sta->wpa_sm == NULL) {
 463                         wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
 464                                    "state machine");
 465                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 466                         goto fail;
 467                 }
 468                 wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
 469                                     auth_transaction, mgmt->u.auth.variable,
 470                                     len - IEEE80211_HDRLEN -
 471                                     sizeof(mgmt->u.auth),
 472                                     handle_auth_ft_finish, hapd);
 473                 /* handle_auth_ft_finish() callback will complete auth. */
 474                 return;
 475 #endif /* CONFIG_IEEE80211R */
 476         }
 477
 478  fail:
 479         send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
 480                         auth_transaction + 1, resp, resp_ies, resp_ies_len);
 481 }
 482
 483
 484 static int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta)
 485 {
 486         int i, j = 32, aid;
 487
 488         /* get a unique AID */
 489         if (sta->aid > 0) {
 490                 wpa_printf(MSG_DEBUG, "  old AID %d", sta->aid);
 491                 return 0;
 492         }
 493
 494         for (i = 0; i < AID_WORDS; i++) {
 495                 if (hapd->sta_aid[i] == (u32) -1)
 496                         continue;
 497                 for (j = 0; j < 32; j++) {
 498                         if (!(hapd->sta_aid[i] & BIT(j)))
 499                                 break;
 500                 }
 501                 if (j < 32)
 502                         break;
 503         }
 504         if (j == 32)
 505                 return -1;
 506         aid = i * 32 + j + 1;
 507         if (aid > 2007)
 508                 return -1;
 509
 510         sta->aid = aid;
 511         hapd->sta_aid[i] |= BIT(j);
 512         wpa_printf(MSG_DEBUG, "  new AID %d", sta->aid);
 513         return 0;
 514 }
 515
 516
 517 static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta,
 518                       const u8 *ssid_ie, size_t ssid_ie_len)
 519 {
 520         if (ssid_ie == NULL)
 521                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 522
 523         if (ssid_ie_len != hapd->conf->ssid.ssid_len ||
 524             os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) {
 525                 char ssid_txt[33];
 526                 ieee802_11_print_ssid(ssid_txt, ssid_ie, ssid_ie_len);
 527                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 528                                HOSTAPD_LEVEL_INFO,
 529                                "Station tried to associate with unknown SSID "
 530                                "'%s'", ssid_txt);
 531                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 532         }
 533
 534         return WLAN_STATUS_SUCCESS;
 535 }
 536
 537
 538 static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta,
 539                      const u8 *wmm_ie, size_t wmm_ie_len)
 540 {
 541         sta->flags &= ~WLAN_STA_WMM;
 542         if (wmm_ie && hapd->conf->wmm_enabled) {
 543                 if (hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len))
 544                         hostapd_logger(hapd, sta->addr,
 545                                        HOSTAPD_MODULE_WPA,
 546                                        HOSTAPD_LEVEL_DEBUG,
 547                                        "invalid WMM element in association "
 548                                        "request");
 549                 else
 550                         sta->flags |= WLAN_STA_WMM;
 551         }
 552         return WLAN_STATUS_SUCCESS;
 553 }
 554
 555
 556 static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta,
 557                            struct ieee802_11_elems *elems)
 558 {
 559         if (!elems->supp_rates) {
 560                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 561                                HOSTAPD_LEVEL_DEBUG,
 562                                "No supported rates element in AssocReq");
 563                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 564         }
 565
 566         if (elems->supp_rates_len > sizeof(sta->supported_rates)) {
 567                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 568                                HOSTAPD_LEVEL_DEBUG,
 569                                "Invalid supported rates element length %d",
 570                                elems->supp_rates_len);
 571                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 572         }
 573
 574         os_memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
 575         os_memcpy(sta->supported_rates, elems->supp_rates,
 576                   elems->supp_rates_len);
 577         sta->supported_rates_len = elems->supp_rates_len;
 578
 579         if (elems->ext_supp_rates) {
 580                 if (elems->supp_rates_len + elems->ext_supp_rates_len >
 581                     sizeof(sta->supported_rates)) {
 582                         hostapd_logger(hapd, sta->addr,
 583                                        HOSTAPD_MODULE_IEEE80211,
 584                                        HOSTAPD_LEVEL_DEBUG,
 585                                        "Invalid supported rates element length"
 586                                        " %d+%d", elems->supp_rates_len,
 587                                        elems->ext_supp_rates_len);
 588                         return WLAN_STATUS_UNSPECIFIED_FAILURE;
 589                 }
 590
 591                 os_memcpy(sta->supported_rates + elems->supp_rates_len,
 592                           elems->ext_supp_rates, elems->ext_supp_rates_len);
 593                 sta->supported_rates_len += elems->ext_supp_rates_len;
 594         }
 595
 596         return WLAN_STATUS_SUCCESS;
 597 }
 598
 599
 600 static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta,
 601                            const u8 *ies, size_t ies_len, int reassoc)
 602 {
 603         struct ieee802_11_elems elems;
 604         u16 resp;
 605         const u8 *wpa_ie;
 606         size_t wpa_ie_len;
 607
 608         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) {
 609                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 610                                HOSTAPD_LEVEL_INFO, "Station sent an invalid "
 611                                "association request");
 612                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 613         }
 614
 615         resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len);
 616         if (resp != WLAN_STATUS_SUCCESS)
 617                 return resp;
 618         resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len);
 619         if (resp != WLAN_STATUS_SUCCESS)
 620                 return resp;
 621         resp = copy_supp_rates(hapd, sta, &elems);
 622         if (resp != WLAN_STATUS_SUCCESS)
 623                 return resp;
 624 #ifdef CONFIG_IEEE80211N
 625         resp = copy_sta_ht_capab(hapd, sta, elems.ht_capabilities,
 626                                  elems.ht_capabilities_len);
 627         if (resp != WLAN_STATUS_SUCCESS)
 628                 return resp;
 629         if (hapd->iconf->ieee80211n && hapd->iconf->require_ht &&
 630             !(sta->flags & WLAN_STA_HT)) {
 631                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 632                                HOSTAPD_LEVEL_INFO, "Station does not support "
 633                                "mandatory HT PHY - reject association");
 634                 return WLAN_STATUS_ASSOC_DENIED_NO_HT;
 635         }
 636 #endif /* CONFIG_IEEE80211N */
 637
 638         if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
 639                 wpa_ie = elems.rsn_ie;
 640                 wpa_ie_len = elems.rsn_ie_len;
 641         } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
 642                    elems.wpa_ie) {
 643                 wpa_ie = elems.wpa_ie;
 644                 wpa_ie_len = elems.wpa_ie_len;
 645         } else {
 646                 wpa_ie = NULL;
 647                 wpa_ie_len = 0;
 648         }
 649
 650 #ifdef CONFIG_WPS
 651         sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS | WLAN_STA_WPS2);
 652         if (hapd->conf->wps_state && elems.wps_ie) {
 653                 wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association "
 654                            "Request - assume WPS is used");
 655                 sta->flags |= WLAN_STA_WPS;
 656                 wpabuf_free(sta->wps_ie);
 657                 sta->wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
 658                                                           WPS_IE_VENDOR_TYPE);
 659                 if (sta->wps_ie && wps_is_20(sta->wps_ie)) {
 660                         wpa_printf(MSG_DEBUG, "WPS: STA supports WPS 2.0");
 661                         sta->flags |= WLAN_STA_WPS2;
 662                 }
 663                 wpa_ie = NULL;
 664                 wpa_ie_len = 0;
 665                 if (sta->wps_ie && wps_validate_assoc_req(sta->wps_ie) < 0) {
 666                         wpa_printf(MSG_DEBUG, "WPS: Invalid WPS IE in "
 667                                    "(Re)Association Request - reject");
 668                         return WLAN_STATUS_INVALID_IE;
 669                 }
 670         } else if (hapd->conf->wps_state && wpa_ie == NULL) {
 671                 wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE in "
 672                            "(Re)Association Request - possible WPS use");
 673                 sta->flags |= WLAN_STA_MAYBE_WPS;
 674         } else
 675 #endif /* CONFIG_WPS */
 676         if (hapd->conf->wpa && wpa_ie == NULL) {
 677                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 678                                HOSTAPD_LEVEL_INFO,
 679                                "No WPA/RSN IE in association request");
 680                 return WLAN_STATUS_INVALID_IE;
 681         }
 682
 683         if (hapd->conf->wpa && wpa_ie) {
 684                 int res;
 685                 wpa_ie -= 2;
 686                 wpa_ie_len += 2;
 687                 if (sta->wpa_sm == NULL)
 688                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
 689                                                         sta->addr);
 690                 if (sta->wpa_sm == NULL) {
 691                         wpa_printf(MSG_WARNING, "Failed to initialize WPA "
 692                                    "state machine");
 693                         return WLAN_STATUS_UNSPECIFIED_FAILURE;
 694                 }
 695                 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
 696                                           wpa_ie, wpa_ie_len,
 697                                           elems.mdie, elems.mdie_len);
 698                 if (res == WPA_INVALID_GROUP)
 699                         resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
 700                 else if (res == WPA_INVALID_PAIRWISE)
 701                         resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
 702                 else if (res == WPA_INVALID_AKMP)
 703                         resp = WLAN_STATUS_AKMP_NOT_VALID;
 704                 else if (res == WPA_ALLOC_FAIL)
 705                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 706 #ifdef CONFIG_IEEE80211W
 707                 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
 708                         resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
 709                 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
 710                         resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
 711 #endif /* CONFIG_IEEE80211W */
 712                 else if (res == WPA_INVALID_MDIE)
 713                         resp = WLAN_STATUS_INVALID_MDIE;
 714                 else if (res != WPA_IE_OK)
 715                         resp = WLAN_STATUS_INVALID_IE;
 716                 if (resp != WLAN_STATUS_SUCCESS)
 717                         return resp;
 718 #ifdef CONFIG_IEEE80211W
 719                 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
 720                     sta->sa_query_count > 0)
 721                         ap_check_sa_query_timeout(hapd, sta);
 722                 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
 723                     (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) {
 724                         /*
 725                          * STA has already been associated with MFP and SA
 726                          * Query timeout has not been reached. Reject the
 727                          * association attempt temporarily and start SA Query,
 728                          * if one is not pending.
 729                          */
 730
 731                         if (sta->sa_query_count == 0)
 732                                 ap_sta_start_sa_query(hapd, sta);
 733
 734                         return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
 735                 }
 736
 737                 if (wpa_auth_uses_mfp(sta->wpa_sm))
 738                         sta->flags |= WLAN_STA_MFP;
 739                 else
 740                         sta->flags &= ~WLAN_STA_MFP;
 741 #endif /* CONFIG_IEEE80211W */
 742
 743 #ifdef CONFIG_IEEE80211R
 744                 if (sta->auth_alg == WLAN_AUTH_FT) {
 745                         if (!reassoc) {
 746                                 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
 747                                            "to use association (not "
 748                                            "re-association) with FT auth_alg",
 749                                            MAC2STR(sta->addr));
 750                                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 751                         }
 752
 753                         resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies,
 754                                                        ies_len);
 755                         if (resp != WLAN_STATUS_SUCCESS)
 756                                 return resp;
 757                 }
 758 #endif /* CONFIG_IEEE80211R */
 759
 760 #ifdef CONFIG_IEEE80211N
 761                 if ((sta->flags & WLAN_STA_HT) &&
 762                     wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
 763                         hostapd_logger(hapd, sta->addr,
 764                                        HOSTAPD_MODULE_IEEE80211,
 765                                        HOSTAPD_LEVEL_INFO,
 766                                        "Station tried to use TKIP with HT "
 767                                        "association");
 768                         return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
 769                 }
 770 #endif /* CONFIG_IEEE80211N */
 771         } else
 772                 wpa_auth_sta_no_wpa(sta->wpa_sm);
 773
 774 #ifdef CONFIG_P2P
 775         if (elems.p2p) {
 776                 wpabuf_free(sta->p2p_ie);
 777                 sta->p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
 778                                                           P2P_IE_VENDOR_TYPE);
 779
 780         } else {
 781                 wpabuf_free(sta->p2p_ie);
 782                 sta->p2p_ie = NULL;
 783         }
 784
 785         p2p_group_notif_assoc(hapd->p2p_group, sta->addr, ies, ies_len);
 786 #endif /* CONFIG_P2P */
 787
 788         return WLAN_STATUS_SUCCESS;
 789 }
 790
 791
 792 static void send_deauth(struct hostapd_data *hapd, const u8 *addr,
 793                         u16 reason_code)
 794 {
 795         int send_len;
 796         struct ieee80211_mgmt reply;
 797
 798         os_memset(&reply, 0, sizeof(reply));
 799         reply.frame_control =
 800                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH);
 801         os_memcpy(reply.da, addr, ETH_ALEN);
 802         os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN);
 803         os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN);
 804
 805         send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth);
 806         reply.u.deauth.reason_code = host_to_le16(reason_code);
 807
 808         if (hostapd_drv_send_mlme(hapd, &reply, send_len) < 0)
 809                 wpa_printf(MSG_INFO, "Failed to send deauth: %s",
 810                            strerror(errno));
 811 }
 812
 813
 814 static void send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta,
 815                             u16 status_code, int reassoc, const u8 *ies,
 816                             size_t ies_len)
 817 {
 818         int send_len;
 819         u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
 820         struct ieee80211_mgmt *reply;
 821         u8 *p;
 822
 823         os_memset(buf, 0, sizeof(buf));
 824         reply = (struct ieee80211_mgmt *) buf;
 825         reply->frame_control =
 826                 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 827                              (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
 828                               WLAN_FC_STYPE_ASSOC_RESP));
 829         os_memcpy(reply->da, sta->addr, ETH_ALEN);
 830         os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
 831         os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN);
 832
 833         send_len = IEEE80211_HDRLEN;
 834         send_len += sizeof(reply->u.assoc_resp);
 835         reply->u.assoc_resp.capab_info =
 836                 host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
 837         reply->u.assoc_resp.status_code = host_to_le16(status_code);
 838         reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
 839                                                | BIT(14) | BIT(15));
 840         /* Supported rates */
 841         p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
 842         /* Extended supported rates */
 843         p = hostapd_eid_ext_supp_rates(hapd, p);
 844
 845 #ifdef CONFIG_IEEE80211R
 846         if (status_code == WLAN_STATUS_SUCCESS) {
 847                 /* IEEE 802.11r: Mobility Domain Information, Fast BSS
 848                  * Transition Information, RSN, [RIC Response] */
 849                 p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
 850                                                 buf + sizeof(buf) - p,
 851                                                 sta->auth_alg, ies, ies_len);
 852         }
 853 #endif /* CONFIG_IEEE80211R */
 854
 855 #ifdef CONFIG_IEEE80211W
 856         if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
 857                 p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
 858 #endif /* CONFIG_IEEE80211W */
 859
 860 #ifdef CONFIG_IEEE80211N
 861         p = hostapd_eid_ht_capabilities(hapd, p);
 862         p = hostapd_eid_ht_operation(hapd, p);
 863 #endif /* CONFIG_IEEE80211N */
 864
 865         p = hostapd_eid_ext_capab(hapd, p);
 866
 867         if (sta->flags & WLAN_STA_WMM)
 868                 p = hostapd_eid_wmm(hapd, p);
 869
 870 #ifdef CONFIG_WPS
 871         if (sta->flags & WLAN_STA_WPS) {
 872                 struct wpabuf *wps = wps_build_assoc_resp_ie();
 873                 if (wps) {
 874                         os_memcpy(p, wpabuf_head(wps), wpabuf_len(wps));
 875                         p += wpabuf_len(wps);
 876                         wpabuf_free(wps);
 877                 }
 878         }
 879 #endif /* CONFIG_WPS */
 880
 881 #ifdef CONFIG_P2P
 882         if (sta->p2p_ie) {
 883                 struct wpabuf *p2p_resp_ie;
 884                 enum p2p_status_code status;
 885                 switch (status_code) {
 886                 case WLAN_STATUS_SUCCESS:
 887                         status = P2P_SC_SUCCESS;
 888                         break;
 889                 case WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA:
 890                         status = P2P_SC_FAIL_LIMIT_REACHED;
 891                         break;
 892                 default:
 893                         status = P2P_SC_FAIL_INVALID_PARAMS;
 894                         break;
 895                 }
 896                 p2p_resp_ie = p2p_group_assoc_resp_ie(hapd->p2p_group, status);
 897                 if (p2p_resp_ie) {
 898                         os_memcpy(p, wpabuf_head(p2p_resp_ie),
 899                                   wpabuf_len(p2p_resp_ie));
 900                         p += wpabuf_len(p2p_resp_ie);
 901                         wpabuf_free(p2p_resp_ie);
 902                 }
 903         }
 904 #endif /* CONFIG_P2P */
 905
 906 #ifdef CONFIG_P2P_MANAGER
 907         if (hapd->conf->p2p & P2P_MANAGE)
 908                 p = hostapd_eid_p2p_manage(hapd, p);
 909 #endif /* CONFIG_P2P_MANAGER */
 910
 911         send_len += p - reply->u.assoc_resp.variable;
 912
 913         if (hostapd_drv_send_mlme(hapd, reply, send_len) < 0)
 914                 wpa_printf(MSG_INFO, "Failed to send assoc resp: %s",
 915                            strerror(errno));
 916 }
 917
 918
 919 static void handle_assoc(struct hostapd_data *hapd,
 920                          const struct ieee80211_mgmt *mgmt, size_t len,
 921                          int reassoc)
 922 {
 923         u16 capab_info, listen_interval;
 924         u16 resp = WLAN_STATUS_SUCCESS;
 925         const u8 *pos;
 926         int left, i;
 927         struct sta_info *sta;
 928
 929         if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
 930                                       sizeof(mgmt->u.assoc_req))) {
 931                 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
 932                        "\n", reassoc, (unsigned long) len);
 933                 return;
 934         }
 935
 936         if (reassoc) {
 937                 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
 938                 listen_interval = le_to_host16(
 939                         mgmt->u.reassoc_req.listen_interval);
 940                 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
 941                            " capab_info=0x%02x listen_interval=%d current_ap="
 942                            MACSTR,
 943                            MAC2STR(mgmt->sa), capab_info, listen_interval,
 944                            MAC2STR(mgmt->u.reassoc_req.current_ap));
 945                 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
 946                 pos = mgmt->u.reassoc_req.variable;
 947         } else {
 948                 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
 949                 listen_interval = le_to_host16(
 950                         mgmt->u.assoc_req.listen_interval);
 951                 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
 952                            " capab_info=0x%02x listen_interval=%d",
 953                            MAC2STR(mgmt->sa), capab_info, listen_interval);
 954                 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
 955                 pos = mgmt->u.assoc_req.variable;
 956         }
 957
 958         sta = ap_get_sta(hapd, mgmt->sa);
 959 #ifdef CONFIG_IEEE80211R
 960         if (sta && sta->auth_alg == WLAN_AUTH_FT &&
 961             (sta->flags & WLAN_STA_AUTH) == 0) {
 962                 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
 963                            "prior to authentication since it is using "
 964                            "over-the-DS FT", MAC2STR(mgmt->sa));
 965         } else
 966 #endif /* CONFIG_IEEE80211R */
 967         if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
 968                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
 969                                HOSTAPD_LEVEL_INFO, "Station tried to "
 970                                "associate before authentication "
 971                                "(aid=%d flags=0x%x)",
 972                                sta ? sta->aid : -1,
 973                                sta ? sta->flags : 0);
 974                 send_deauth(hapd, mgmt->sa,
 975                             WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA);
 976                 return;
 977         }
 978
 979         if (hapd->tkip_countermeasures) {
 980                 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
 981                 goto fail;
 982         }
 983
 984         if (listen_interval > hapd->conf->max_listen_interval) {
 985                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
 986                                HOSTAPD_LEVEL_DEBUG,
 987                                "Too large Listen Interval (%d)",
 988                                listen_interval);
 989                 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
 990                 goto fail;
 991         }
 992
 993         /* followed by SSID and Supported rates; and HT capabilities if 802.11n
 994          * is used */
 995         resp = check_assoc_ies(hapd, sta, pos, left, reassoc);
 996         if (resp != WLAN_STATUS_SUCCESS)
 997                 goto fail;
 998
 999         if (hostapd_get_aid(hapd, sta) < 0) {
1000                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1001                                HOSTAPD_LEVEL_INFO, "No room for more AIDs");
1002                 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
1003                 goto fail;
1004         }
1005
1006         sta->capability = capab_info;
1007         sta->listen_interval = listen_interval;
1008
1009         if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
1010                 sta->flags |= WLAN_STA_NONERP;
1011         for (i = 0; i < sta->supported_rates_len; i++) {
1012                 if ((sta->supported_rates[i] & 0x7f) > 22) {
1013                         sta->flags &= ~WLAN_STA_NONERP;
1014                         break;
1015                 }
1016         }
1017         if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
1018                 sta->nonerp_set = 1;
1019                 hapd->iface->num_sta_non_erp++;
1020                 if (hapd->iface->num_sta_non_erp == 1)
1021                         ieee802_11_set_beacons(hapd->iface);
1022         }
1023
1024         if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
1025             !sta->no_short_slot_time_set) {
1026                 sta->no_short_slot_time_set = 1;
1027                 hapd->iface->num_sta_no_short_slot_time++;
1028                 if (hapd->iface->current_mode->mode ==
1029                     HOSTAPD_MODE_IEEE80211G &&
1030                     hapd->iface->num_sta_no_short_slot_time == 1)
1031                         ieee802_11_set_beacons(hapd->iface);
1032         }
1033
1034         if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1035                 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
1036         else
1037                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
1038
1039         if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
1040             !sta->no_short_preamble_set) {
1041                 sta->no_short_preamble_set = 1;
1042                 hapd->iface->num_sta_no_short_preamble++;
1043                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
1044                     && hapd->iface->num_sta_no_short_preamble == 1)
1045                         ieee802_11_set_beacons(hapd->iface);
1046         }
1047
1048 #ifdef CONFIG_IEEE80211N
1049         update_ht_state(hapd, sta);
1050 #endif /* CONFIG_IEEE80211N */
1051
1052         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1053                        HOSTAPD_LEVEL_DEBUG,
1054                        "association OK (aid %d)", sta->aid);
1055         /* Station will be marked associated, after it acknowledges AssocResp
1056          */
1057         sta->flags |= WLAN_STA_ASSOC_REQ_OK;
1058
1059 #ifdef CONFIG_IEEE80211W
1060         if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) {
1061                 wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out "
1062                            "SA Query procedure", reassoc ? "re" : "");
1063                 /* TODO: Send a protected Disassociate frame to the STA using
1064                  * the old key and Reason Code "Previous Authentication no
1065                  * longer valid". Make sure this is only sent protected since
1066                  * unprotected frame would be received by the STA that is now
1067                  * trying to associate.
1068                  */
1069         }
1070 #endif /* CONFIG_IEEE80211W */
1071
1072         if (reassoc) {
1073                 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
1074                           ETH_ALEN);
1075         }
1076
1077         if (sta->last_assoc_req)
1078                 os_free(sta->last_assoc_req);
1079         sta->last_assoc_req = os_malloc(len);
1080         if (sta->last_assoc_req)
1081                 os_memcpy(sta->last_assoc_req, mgmt, len);
1082
1083         /* Make sure that the previously registered inactivity timer will not
1084          * remove the STA immediately. */
1085         sta->timeout_next = STA_NULLFUNC;
1086
1087  fail:
1088         send_assoc_resp(hapd, sta, resp, reassoc, pos, left);
1089 }
1090
1091
1092 static void handle_disassoc(struct hostapd_data *hapd,
1093                             const struct ieee80211_mgmt *mgmt, size_t len)
1094 {
1095         struct sta_info *sta;
1096
1097         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
1098                 printf("handle_disassoc - too short payload (len=%lu)\n",
1099                        (unsigned long) len);
1100                 return;
1101         }
1102
1103         wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
1104                    MAC2STR(mgmt->sa),
1105                    le_to_host16(mgmt->u.disassoc.reason_code));
1106
1107         sta = ap_get_sta(hapd, mgmt->sa);
1108         if (sta == NULL) {
1109                 printf("Station " MACSTR " trying to disassociate, but it "
1110                        "is not associated.\n", MAC2STR(mgmt->sa));
1111                 return;
1112         }
1113
1114         sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK);
1115         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED MACSTR,
1116                 MAC2STR(sta->addr));
1117         wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
1118         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1119                        HOSTAPD_LEVEL_INFO, "disassociated");
1120         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1121         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1122         /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
1123          * authenticated. */
1124         accounting_sta_stop(hapd, sta);
1125         ieee802_1x_free_station(sta);
1126         hostapd_drv_sta_remove(hapd, sta->addr);
1127
1128         if (sta->timeout_next == STA_NULLFUNC ||
1129             sta->timeout_next == STA_DISASSOC) {
1130                 sta->timeout_next = STA_DEAUTH;
1131                 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1132                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
1133                                        hapd, sta);
1134         }
1135
1136         mlme_disassociate_indication(
1137                 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
1138 }
1139
1140
1141 static void handle_deauth(struct hostapd_data *hapd,
1142                           const struct ieee80211_mgmt *mgmt, size_t len)
1143 {
1144         struct sta_info *sta;
1145
1146         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
1147                 wpa_msg(hapd, MSG_DEBUG, "handle_deauth - too short payload "
1148                         "(len=%lu)", (unsigned long) len);
1149                 return;
1150         }
1151
1152         wpa_msg(hapd, MSG_DEBUG, "deauthentication: STA=" MACSTR
1153                 " reason_code=%d",
1154                 MAC2STR(mgmt->sa), le_to_host16(mgmt->u.deauth.reason_code));
1155
1156         sta = ap_get_sta(hapd, mgmt->sa);
1157         if (sta == NULL) {
1158                 wpa_msg(hapd, MSG_DEBUG, "Station " MACSTR " trying to "
1159                         "deauthenticate, but it is not authenticated",
1160                         MAC2STR(mgmt->sa));
1161                 return;
1162         }
1163
1164         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
1165                         WLAN_STA_ASSOC_REQ_OK);
1166         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED MACSTR,
1167                 MAC2STR(sta->addr));
1168         wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1169         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1170                        HOSTAPD_LEVEL_DEBUG, "deauthenticated");
1171         mlme_deauthenticate_indication(
1172                 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
1173         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1174         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1175         ap_free_sta(hapd, sta);
1176 }
1177
1178
1179 static void handle_beacon(struct hostapd_data *hapd,
1180                           const struct ieee80211_mgmt *mgmt, size_t len,
1181                           struct hostapd_frame_info *fi)
1182 {
1183         struct ieee802_11_elems elems;
1184
1185         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
1186                 printf("handle_beacon - too short payload (len=%lu)\n",
1187                        (unsigned long) len);
1188                 return;
1189         }
1190
1191         (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
1192                                       len - (IEEE80211_HDRLEN +
1193                                              sizeof(mgmt->u.beacon)), &elems,
1194                                       0);
1195
1196         ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
1197 }
1198
1199
1200 #ifdef CONFIG_IEEE80211W
1201
1202 static void hostapd_sa_query_action(struct hostapd_data *hapd,
1203                                     const struct ieee80211_mgmt *mgmt,
1204                                     size_t len)
1205 {
1206         const u8 *end;
1207
1208         end = mgmt->u.action.u.sa_query_resp.trans_id +
1209                 WLAN_SA_QUERY_TR_ID_LEN;
1210         if (((u8 *) mgmt) + len < end) {
1211                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action "
1212                            "frame (len=%lu)", (unsigned long) len);
1213                 return;
1214         }
1215
1216         ieee802_11_sa_query_action(hapd, mgmt->sa,
1217                                    mgmt->u.action.u.sa_query_resp.action,
1218                                    mgmt->u.action.u.sa_query_resp.trans_id);
1219 }
1220
1221
1222 static int robust_action_frame(u8 category)
1223 {
1224         return category != WLAN_ACTION_PUBLIC &&
1225                 category != WLAN_ACTION_HT;
1226 }
1227 #endif /* CONFIG_IEEE80211W */
1228
1229
1230 static void handle_action(struct hostapd_data *hapd,
1231                           const struct ieee80211_mgmt *mgmt, size_t len)
1232 {
1233         struct sta_info *sta;
1234
1235         if (len < IEEE80211_HDRLEN + 1) {
1236                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1237                                HOSTAPD_LEVEL_DEBUG,
1238                                "handle_action - too short payload (len=%lu)",
1239                                (unsigned long) len);
1240                 return;
1241         }
1242
1243         sta = ap_get_sta(hapd, mgmt->sa);
1244 #ifdef CONFIG_IEEE80211W
1245         if (sta && (sta->flags & WLAN_STA_MFP) &&
1246             !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP) &&
1247               robust_action_frame(mgmt->u.action.category))) {
1248                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1249                                HOSTAPD_LEVEL_DEBUG,
1250                                "Dropped unprotected Robust Action frame from "
1251                                "an MFP STA");
1252                 return;
1253         }
1254 #endif /* CONFIG_IEEE80211W */
1255
1256         switch (mgmt->u.action.category) {
1257 #ifdef CONFIG_IEEE80211R
1258         case WLAN_ACTION_FT:
1259         {
1260                 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
1261                         wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored FT Action "
1262                                    "frame from unassociated STA " MACSTR,
1263                                    MAC2STR(mgmt->sa));
1264                         return;
1265                 }
1266
1267                 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
1268                                      len - IEEE80211_HDRLEN))
1269                         break;
1270
1271                 return;
1272         }
1273 #endif /* CONFIG_IEEE80211R */
1274         case WLAN_ACTION_WMM:
1275                 hostapd_wmm_action(hapd, mgmt, len);
1276                 return;
1277 #ifdef CONFIG_IEEE80211W
1278         case WLAN_ACTION_SA_QUERY:
1279                 hostapd_sa_query_action(hapd, mgmt, len);
1280                 return;
1281 #endif /* CONFIG_IEEE80211W */
1282         case WLAN_ACTION_PUBLIC:
1283                 if (hapd->public_action_cb) {
1284                         hapd->public_action_cb(hapd->public_action_cb_ctx,
1285                                                (u8 *) mgmt, len,
1286                                                hapd->iface->freq);
1287                         return;
1288                 }
1289                 break;
1290         case WLAN_ACTION_VENDOR_SPECIFIC:
1291                 if (hapd->vendor_action_cb) {
1292                         if (hapd->vendor_action_cb(hapd->vendor_action_cb_ctx,
1293                                                    (u8 *) mgmt, len,
1294                                                    hapd->iface->freq) == 0)
1295                                 return;
1296                 }
1297                 break;
1298         }
1299
1300         hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1301                        HOSTAPD_LEVEL_DEBUG,
1302                        "handle_action - unknown action category %d or invalid "
1303                        "frame",
1304                        mgmt->u.action.category);
1305         if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
1306             !(mgmt->sa[0] & 0x01)) {
1307                 struct ieee80211_mgmt *resp;
1308
1309                 /*
1310                  * IEEE 802.11-REVma/D9.0 - 7.3.1.11
1311                  * Return the Action frame to the source without change
1312                  * except that MSB of the Category set to 1.
1313                  */
1314                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
1315                            "frame back to sender");
1316                 resp = os_malloc(len);
1317                 if (resp == NULL)
1318                         return;
1319                 os_memcpy(resp, mgmt, len);
1320                 os_memcpy(resp->da, resp->sa, ETH_ALEN);
1321                 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
1322                 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
1323                 resp->u.action.category |= 0x80;
1324
1325                 hostapd_drv_send_mlme(hapd, resp, len);
1326                 os_free(resp);
1327         }
1328 }
1329
1330
1331 /**
1332  * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
1333  * @hapd: hostapd BSS data structure (the BSS to which the management frame was
1334  * sent to)
1335  * @buf: management frame data (starting from IEEE 802.11 header)
1336  * @len: length of frame data in octets
1337  * @fi: meta data about received frame (signal level, etc.)
1338  *
1339  * Process all incoming IEEE 802.11 management frames. This will be called for
1340  * each frame received from the kernel driver through wlan#ap interface. In
1341  * addition, it can be called to re-inserted pending frames (e.g., when using
1342  * external RADIUS server as an MAC ACL).
1343  */
1344 void ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len,
1345                      struct hostapd_frame_info *fi)
1346 {
1347         struct ieee80211_mgmt *mgmt;
1348         int broadcast;
1349         u16 fc, stype;
1350
1351         if (len < 24)
1352                 return;
1353
1354         mgmt = (struct ieee80211_mgmt *) buf;
1355         fc = le_to_host16(mgmt->frame_control);
1356         stype = WLAN_FC_GET_STYPE(fc);
1357
1358         if (stype == WLAN_FC_STYPE_BEACON) {
1359                 handle_beacon(hapd, mgmt, len, fi);
1360                 return;
1361         }
1362
1363         broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
1364                 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
1365                 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
1366
1367         if (!broadcast &&
1368             os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
1369                 printf("MGMT: BSSID=" MACSTR " not our address\n",
1370                        MAC2STR(mgmt->bssid));
1371                 return;
1372         }
1373
1374
1375         if (stype == WLAN_FC_STYPE_PROBE_REQ) {
1376                 handle_probe_req(hapd, mgmt, len);
1377                 return;
1378         }
1379
1380         if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
1381                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1382                                HOSTAPD_LEVEL_DEBUG,
1383                                "MGMT: DA=" MACSTR " not our address",
1384                                MAC2STR(mgmt->da));
1385                 return;
1386         }
1387
1388         switch (stype) {
1389         case WLAN_FC_STYPE_AUTH:
1390                 wpa_printf(MSG_DEBUG, "mgmt::auth");
1391                 handle_auth(hapd, mgmt, len);
1392                 break;
1393         case WLAN_FC_STYPE_ASSOC_REQ:
1394                 wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
1395                 handle_assoc(hapd, mgmt, len, 0);
1396                 break;
1397         case WLAN_FC_STYPE_REASSOC_REQ:
1398                 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
1399                 handle_assoc(hapd, mgmt, len, 1);
1400                 break;
1401         case WLAN_FC_STYPE_DISASSOC:
1402                 wpa_printf(MSG_DEBUG, "mgmt::disassoc");
1403                 handle_disassoc(hapd, mgmt, len);
1404                 break;
1405         case WLAN_FC_STYPE_DEAUTH:
1406                 wpa_msg(hapd, MSG_DEBUG, "mgmt::deauth");
1407                 handle_deauth(hapd, mgmt, len);
1408                 break;
1409         case WLAN_FC_STYPE_ACTION:
1410                 wpa_printf(MSG_DEBUG, "mgmt::action");
1411                 handle_action(hapd, mgmt, len);
1412                 break;
1413         default:
1414                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1415                                HOSTAPD_LEVEL_DEBUG,
1416                                "unknown mgmt frame subtype %d", stype);
1417                 break;
1418         }
1419 }
1420
1421
1422 static void handle_auth_cb(struct hostapd_data *hapd,
1423                            const struct ieee80211_mgmt *mgmt,
1424                            size_t len, int ok)
1425 {
1426         u16 auth_alg, auth_transaction, status_code;
1427         struct sta_info *sta;
1428
1429         if (!ok) {
1430                 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1431                                HOSTAPD_LEVEL_NOTICE,
1432                                "did not acknowledge authentication response");
1433                 return;
1434         }
1435
1436         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
1437                 printf("handle_auth_cb - too short payload (len=%lu)\n",
1438                        (unsigned long) len);
1439                 return;
1440         }
1441
1442         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1443         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1444         status_code = le_to_host16(mgmt->u.auth.status_code);
1445
1446         sta = ap_get_sta(hapd, mgmt->da);
1447         if (!sta) {
1448                 printf("handle_auth_cb: STA " MACSTR " not found\n",
1449                        MAC2STR(mgmt->da));
1450                 return;
1451         }
1452
1453         if (status_code == WLAN_STATUS_SUCCESS &&
1454             ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
1455              (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
1456                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1457                                HOSTAPD_LEVEL_INFO, "authenticated");
1458                 sta->flags |= WLAN_STA_AUTH;
1459         }
1460 }
1461
1462
1463 static void handle_assoc_cb(struct hostapd_data *hapd,
1464                             const struct ieee80211_mgmt *mgmt,
1465                             size_t len, int reassoc, int ok)
1466 {
1467         u16 status;
1468         struct sta_info *sta;
1469         int new_assoc = 1;
1470         struct ieee80211_ht_capabilities ht_cap;
1471
1472         if (!ok) {
1473                 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1474                                HOSTAPD_LEVEL_DEBUG,
1475                                "did not acknowledge association response");
1476                 return;
1477         }
1478
1479         if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
1480                                       sizeof(mgmt->u.assoc_resp))) {
1481                 printf("handle_assoc_cb(reassoc=%d) - too short payload "
1482                        "(len=%lu)\n", reassoc, (unsigned long) len);
1483                 return;
1484         }
1485
1486         if (reassoc)
1487                 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
1488         else
1489                 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1490
1491         sta = ap_get_sta(hapd, mgmt->da);
1492         if (!sta) {
1493                 printf("handle_assoc_cb: STA " MACSTR " not found\n",
1494                        MAC2STR(mgmt->da));
1495                 return;
1496         }
1497
1498         if (status != WLAN_STATUS_SUCCESS)
1499                 goto fail;
1500
1501         /* Stop previous accounting session, if one is started, and allocate
1502          * new session id for the new session. */
1503         accounting_sta_stop(hapd, sta);
1504
1505         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1506                        HOSTAPD_LEVEL_INFO,
1507                        "associated (aid %d)",
1508                        sta->aid);
1509
1510         if (sta->flags & WLAN_STA_ASSOC)
1511                 new_assoc = 0;
1512         sta->flags |= WLAN_STA_ASSOC;
1513         if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa) ||
1514             sta->auth_alg == WLAN_AUTH_FT) {
1515                 /*
1516                  * Open, static WEP, or FT protocol; no separate authorization
1517                  * step.
1518                  */
1519                 ap_sta_set_authorized(hapd, sta, 1);
1520                 wpa_msg(hapd->msg_ctx, MSG_INFO,
1521                         AP_STA_CONNECTED MACSTR, MAC2STR(sta->addr));
1522         }
1523
1524         if (reassoc)
1525                 mlme_reassociate_indication(hapd, sta);
1526         else
1527                 mlme_associate_indication(hapd, sta);
1528
1529 #ifdef CONFIG_IEEE80211W
1530         sta->sa_query_timed_out = 0;
1531 #endif /* CONFIG_IEEE80211W */
1532
1533         /*
1534          * Remove the STA entry in order to make sure the STA PS state gets
1535          * cleared and configuration gets updated in case of reassociation back
1536          * to the same AP.
1537          */
1538         hostapd_drv_sta_remove(hapd, sta->addr);
1539
1540 #ifdef CONFIG_IEEE80211N
1541         if (sta->flags & WLAN_STA_HT)
1542                 hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap);
1543 #endif /* CONFIG_IEEE80211N */
1544
1545         if (hostapd_sta_add(hapd, sta->addr, sta->aid, sta->capability,
1546                             sta->supported_rates, sta->supported_rates_len,
1547                             sta->listen_interval,
1548                             sta->flags & WLAN_STA_HT ? &ht_cap : NULL,
1549                             sta->flags)) {
1550                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1551                                HOSTAPD_LEVEL_NOTICE,
1552                                "Could not add STA to kernel driver");
1553
1554                 ap_sta_disconnect(hapd, sta, sta->addr,
1555                                   WLAN_REASON_DISASSOC_AP_BUSY);
1556
1557                 goto fail;
1558         }
1559
1560         if (sta->flags & WLAN_STA_WDS)
1561                 hostapd_set_wds_sta(hapd, sta->addr, sta->aid, 1);
1562
1563         if (sta->eapol_sm == NULL) {
1564                 /*
1565                  * This STA does not use RADIUS server for EAP authentication,
1566                  * so bind it to the selected VLAN interface now, since the
1567                  * interface selection is not going to change anymore.
1568                  */
1569                 if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
1570                         goto fail;
1571         } else if (sta->vlan_id) {
1572                 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
1573                 if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
1574                         goto fail;
1575         }
1576
1577         hostapd_set_sta_flags(hapd, sta);
1578
1579         if (sta->auth_alg == WLAN_AUTH_FT)
1580                 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
1581         else
1582                 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
1583         hapd->new_assoc_sta_cb(hapd, sta, !new_assoc);
1584
1585         ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
1586
1587  fail:
1588         /* Copy of the association request is not needed anymore */
1589         if (sta->last_assoc_req) {
1590                 os_free(sta->last_assoc_req);
1591                 sta->last_assoc_req = NULL;
1592         }
1593 }
1594
1595
1596 static void handle_deauth_cb(struct hostapd_data *hapd,
1597                              const struct ieee80211_mgmt *mgmt,
1598                              size_t len, int ok)
1599 {
1600         struct sta_info *sta;
1601         if (mgmt->da[0] & 0x01)
1602                 return;
1603         sta = ap_get_sta(hapd, mgmt->da);
1604         if (!sta) {
1605                 wpa_printf(MSG_DEBUG, "handle_deauth_cb: STA " MACSTR
1606                            " not found", MAC2STR(mgmt->da));
1607                 return;
1608         }
1609         if (ok)
1610                 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged deauth",
1611                            MAC2STR(sta->addr));
1612         else
1613                 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
1614                            "deauth", MAC2STR(sta->addr));
1615
1616         ap_sta_deauth_cb(hapd, sta);
1617 }
1618
1619
1620 static void handle_disassoc_cb(struct hostapd_data *hapd,
1621                                const struct ieee80211_mgmt *mgmt,
1622                                size_t len, int ok)
1623 {
1624         struct sta_info *sta;
1625         if (mgmt->da[0] & 0x01)
1626                 return;
1627         sta = ap_get_sta(hapd, mgmt->da);
1628         if (!sta) {
1629                 wpa_printf(MSG_DEBUG, "handle_disassoc_cb: STA " MACSTR
1630                            " not found", MAC2STR(mgmt->da));
1631                 return;
1632         }
1633         if (ok)
1634                 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged disassoc",
1635                            MAC2STR(sta->addr));
1636         else
1637                 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
1638                            "disassoc", MAC2STR(sta->addr));
1639
1640         ap_sta_disassoc_cb(hapd, sta);
1641 }
1642
1643
1644 /**
1645  * ieee802_11_mgmt_cb - Process management frame TX status callback
1646  * @hapd: hostapd BSS data structure (the BSS from which the management frame
1647  * was sent from)
1648  * @buf: management frame data (starting from IEEE 802.11 header)
1649  * @len: length of frame data in octets
1650  * @stype: management frame subtype from frame control field
1651  * @ok: Whether the frame was ACK'ed
1652  */
1653 void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len,
1654                         u16 stype, int ok)
1655 {
1656         const struct ieee80211_mgmt *mgmt;
1657         mgmt = (const struct ieee80211_mgmt *) buf;
1658
1659         switch (stype) {
1660         case WLAN_FC_STYPE_AUTH:
1661                 wpa_printf(MSG_DEBUG, "mgmt::auth cb");
1662                 handle_auth_cb(hapd, mgmt, len, ok);
1663                 break;
1664         case WLAN_FC_STYPE_ASSOC_RESP:
1665                 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
1666                 handle_assoc_cb(hapd, mgmt, len, 0, ok);
1667                 break;
1668         case WLAN_FC_STYPE_REASSOC_RESP:
1669                 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
1670                 handle_assoc_cb(hapd, mgmt, len, 1, ok);
1671                 break;
1672         case WLAN_FC_STYPE_PROBE_RESP:
1673                 wpa_printf(MSG_EXCESSIVE, "mgmt::proberesp cb");
1674                 break;
1675         case WLAN_FC_STYPE_DEAUTH:
1676                 wpa_printf(MSG_DEBUG, "mgmt::deauth cb");
1677                 handle_deauth_cb(hapd, mgmt, len, ok);
1678                 break;
1679         case WLAN_FC_STYPE_DISASSOC:
1680                 wpa_printf(MSG_DEBUG, "mgmt::disassoc cb");
1681                 handle_disassoc_cb(hapd, mgmt, len, ok);
1682                 break;
1683         case WLAN_FC_STYPE_ACTION:
1684                 wpa_printf(MSG_DEBUG, "mgmt::action cb");
1685                 break;
1686         default:
1687                 printf("unknown mgmt cb frame subtype %d\n", stype);
1688                 break;
1689         }
1690 }
1691
1692
1693 int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
1694 {
1695         /* TODO */
1696         return 0;
1697 }
1698
1699
1700 int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
1701                            char *buf, size_t buflen)
1702 {
1703         /* TODO */
1704         return 0;
1705 }
1706
1707
1708 void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
1709                        const u8 *buf, size_t len, int ack)
1710 {
1711         struct sta_info *sta;
1712         struct hostapd_iface *iface = hapd->iface;
1713
1714         sta = ap_get_sta(hapd, addr);
1715         if (sta == NULL && iface->num_bss > 1) {
1716                 size_t j;
1717                 for (j = 0; j < iface->num_bss; j++) {
1718                         hapd = iface->bss[j];
1719                         sta = ap_get_sta(hapd, addr);
1720                         if (sta)
1721                                 break;
1722                 }
1723         }
1724         if (sta == NULL)
1725                 return;
1726         if (sta->flags & WLAN_STA_PENDING_POLL) {
1727                 wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
1728                            "activity poll", MAC2STR(sta->addr),
1729                            ack ? "ACKed" : "did not ACK");
1730                 if (ack)
1731                         sta->flags &= ~WLAN_STA_PENDING_POLL;
1732         }
1733
1734         ieee802_1x_tx_status(hapd, sta, buf, len, ack);
1735 }
1736
1737
1738 void hostapd_client_poll_ok(struct hostapd_data *hapd, const u8 *addr)
1739 {
1740         struct sta_info *sta;
1741         struct hostapd_iface *iface = hapd->iface;
1742
1743         sta = ap_get_sta(hapd, addr);
1744         if (sta == NULL && iface->num_bss > 1) {
1745                 size_t j;
1746                 for (j = 0; j < iface->num_bss; j++) {
1747                         hapd = iface->bss[j];
1748                         sta = ap_get_sta(hapd, addr);
1749                         if (sta)
1750                                 break;
1751                 }
1752         }
1753         if (sta == NULL)
1754                 return;
1755         if (!(sta->flags & WLAN_STA_PENDING_POLL))
1756                 return;
1757
1758         wpa_printf(MSG_DEBUG, "STA " MACSTR " ACKed pending "
1759                    "activity poll", MAC2STR(sta->addr));
1760         sta->flags &= ~WLAN_STA_PENDING_POLL;
1761 }
1762
1763
1764 void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src,
1765                                 int wds)
1766 {
1767         struct sta_info *sta;
1768
1769         sta = ap_get_sta(hapd, src);
1770         if (sta && (sta->flags & WLAN_STA_ASSOC)) {
1771                 if (wds && !(sta->flags & WLAN_STA_WDS)) {
1772                         wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for "
1773                                    "STA " MACSTR " (aid %u)",
1774                                    MAC2STR(sta->addr), sta->aid);
1775                         sta->flags |= WLAN_STA_WDS;
1776                         hostapd_set_wds_sta(hapd, sta->addr, sta->aid, 1);
1777                 }
1778                 return;
1779         }
1780
1781         wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA "
1782                    MACSTR, MAC2STR(src));
1783         if (src[0] & 0x01) {
1784                 /* Broadcast bit set in SA?! Ignore the frame silently. */
1785                 return;
1786         }
1787
1788         if (sta && (sta->flags & WLAN_STA_ASSOC_REQ_OK)) {
1789                 wpa_printf(MSG_DEBUG, "Association Response to the STA has "
1790                            "already been sent, but no TX status yet known - "
1791                            "ignore Class 3 frame issue with " MACSTR,
1792                            MAC2STR(src));
1793                 return;
1794         }
1795
1796         if (sta && (sta->flags & WLAN_STA_AUTH))
1797                 hostapd_drv_sta_disassoc(
1798                         hapd, src,
1799                         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1800         else
1801                 hostapd_drv_sta_deauth(
1802                         hapd, src,
1803                         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1804 }
1805
1806
1807 #endif /* CONFIG_NATIVE_WINDOWS */