src/ap/ieee802_11.c

   1 /*
   2  * hostapd / IEEE 802.11 Management
   3  * Copyright (c) 2002-2010, 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 "hostapd.h"
  29 #include "beacon.h"
  30 #include "ieee802_11_auth.h"
  31 #include "sta_info.h"
  32 #include "ieee802_1x.h"
  33 #include "wpa_auth.h"
  34 #include "wmm.h"
  35 #include "ap_list.h"
  36 #include "accounting.h"
  37 #include "ap_config.h"
  38 #include "ap_mlme.h"
  39 #include "ieee802_11.h"
  40
  41
  42 u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
  43 {
  44         u8 *pos = eid;
  45         int i, num, count;
  46
  47         if (hapd->iface->current_rates == NULL)
  48                 return eid;
  49
  50         *pos++ = WLAN_EID_SUPP_RATES;
  51         num = hapd->iface->num_rates;
  52         if (num > 8) {
  53                 /* rest of the rates are encoded in Extended supported
  54                  * rates element */
  55                 num = 8;
  56         }
  57
  58         *pos++ = num;
  59         count = 0;
  60         for (i = 0, count = 0; i < hapd->iface->num_rates && count < num;
  61              i++) {
  62                 count++;
  63                 *pos = hapd->iface->current_rates[i].rate / 5;
  64                 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
  65                         *pos |= 0x80;
  66                 pos++;
  67         }
  68
  69         return pos;
  70 }
  71
  72
  73 u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
  74 {
  75         u8 *pos = eid;
  76         int i, num, count;
  77
  78         if (hapd->iface->current_rates == NULL)
  79                 return eid;
  80
  81         num = hapd->iface->num_rates;
  82         if (num <= 8)
  83                 return eid;
  84         num -= 8;
  85
  86         *pos++ = WLAN_EID_EXT_SUPP_RATES;
  87         *pos++ = num;
  88         count = 0;
  89         for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
  90              i++) {
  91                 count++;
  92                 if (count <= 8)
  93                         continue; /* already in SuppRates IE */
  94                 *pos = hapd->iface->current_rates[i].rate / 5;
  95                 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
  96                         *pos |= 0x80;
  97                 pos++;
  98         }
  99
 100         return pos;
 101 }
 102
 103
 104 u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta,
 105                            int probe)
 106 {
 107         int capab = WLAN_CAPABILITY_ESS;
 108         int privacy;
 109
 110         if (hapd->iface->num_sta_no_short_preamble == 0 &&
 111             hapd->iconf->preamble == SHORT_PREAMBLE)
 112                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
 113
 114         privacy = hapd->conf->ssid.wep.keys_set;
 115
 116         if (hapd->conf->ieee802_1x &&
 117             (hapd->conf->default_wep_key_len ||
 118              hapd->conf->individual_wep_key_len))
 119                 privacy = 1;
 120
 121         if (hapd->conf->wpa)
 122                 privacy = 1;
 123
 124         if (sta) {
 125                 int policy, def_klen;
 126                 if (probe && sta->ssid_probe) {
 127                         policy = sta->ssid_probe->security_policy;
 128                         def_klen = sta->ssid_probe->wep.default_len;
 129                 } else {
 130                         policy = sta->ssid->security_policy;
 131                         def_klen = sta->ssid->wep.default_len;
 132                 }
 133                 privacy = policy != SECURITY_PLAINTEXT;
 134                 if (policy == SECURITY_IEEE_802_1X && def_klen == 0)
 135                         privacy = 0;
 136         }
 137
 138         if (privacy)
 139                 capab |= WLAN_CAPABILITY_PRIVACY;
 140
 141         if (hapd->iface->current_mode &&
 142             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
 143             hapd->iface->num_sta_no_short_slot_time == 0)
 144                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
 145
 146         return capab;
 147 }
 148
 149
 150 #ifdef CONFIG_IEEE80211W
 151 static u8 * hostapd_eid_assoc_comeback_time(struct hostapd_data *hapd,
 152                                             struct sta_info *sta, u8 *eid)
 153 {
 154         u8 *pos = eid;
 155         u32 timeout, tu;
 156         struct os_time now, passed;
 157
 158         *pos++ = WLAN_EID_TIMEOUT_INTERVAL;
 159         *pos++ = 5;
 160         *pos++ = WLAN_TIMEOUT_ASSOC_COMEBACK;
 161         os_get_time(&now);
 162         os_time_sub(&now, &sta->sa_query_start, &passed);
 163         tu = (passed.sec * 1000000 + passed.usec) / 1024;
 164         if (hapd->conf->assoc_sa_query_max_timeout > tu)
 165                 timeout = hapd->conf->assoc_sa_query_max_timeout - tu;
 166         else
 167                 timeout = 0;
 168         if (timeout < hapd->conf->assoc_sa_query_max_timeout)
 169                 timeout++; /* add some extra time for local timers */
 170         WPA_PUT_LE32(pos, timeout);
 171         pos += 4;
 172
 173         return pos;
 174 }
 175 #endif /* CONFIG_IEEE80211W */
 176
 177
 178 void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len)
 179 {
 180         int i;
 181         if (len > HOSTAPD_MAX_SSID_LEN)
 182                 len = HOSTAPD_MAX_SSID_LEN;
 183         for (i = 0; i < len; i++) {
 184                 if (ssid[i] >= 32 && ssid[i] < 127)
 185                         buf[i] = ssid[i];
 186                 else
 187                         buf[i] = '.';
 188         }
 189         buf[len] = '\0';
 190 }
 191
 192
 193 /**
 194  * ieee802_11_send_deauth - Send Deauthentication frame
 195  * @hapd: hostapd BSS data
 196  * @addr: Address of the destination STA
 197  * @reason: Reason code for Deauthentication
 198  */
 199 void ieee802_11_send_deauth(struct hostapd_data *hapd, const u8 *addr,
 200                             u16 reason)
 201 {
 202         struct ieee80211_mgmt mgmt;
 203
 204         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
 205                        HOSTAPD_LEVEL_DEBUG,
 206                        "deauthenticate - reason %d", reason);
 207         os_memset(&mgmt, 0, sizeof(mgmt));
 208         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 209                                           WLAN_FC_STYPE_DEAUTH);
 210         os_memcpy(mgmt.da, addr, ETH_ALEN);
 211         os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
 212         os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
 213         mgmt.u.deauth.reason_code = host_to_le16(reason);
 214         if (hapd->drv.send_mgmt_frame(hapd, &mgmt, IEEE80211_HDRLEN +
 215                                        sizeof(mgmt.u.deauth)) < 0)
 216                 perror("ieee802_11_send_deauth: send");
 217 }
 218
 219
 220 static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
 221                            u16 auth_transaction, const u8 *challenge,
 222                            int iswep)
 223 {
 224         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 225                        HOSTAPD_LEVEL_DEBUG,
 226                        "authentication (shared key, transaction %d)",
 227                        auth_transaction);
 228
 229         if (auth_transaction == 1) {
 230                 if (!sta->challenge) {
 231                         /* Generate a pseudo-random challenge */
 232                         u8 key[8];
 233                         time_t now;
 234                         int r;
 235                         sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
 236                         if (sta->challenge == NULL)
 237                                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 238
 239                         now = time(NULL);
 240                         r = random();
 241                         os_memcpy(key, &now, 4);
 242                         os_memcpy(key + 4, &r, 4);
 243                         rc4_skip(key, sizeof(key), 0,
 244                                  sta->challenge, WLAN_AUTH_CHALLENGE_LEN);
 245                 }
 246                 return 0;
 247         }
 248
 249         if (auth_transaction != 3)
 250                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 251
 252         /* Transaction 3 */
 253         if (!iswep || !sta->challenge || !challenge ||
 254             os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) {
 255                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 256                                HOSTAPD_LEVEL_INFO,
 257                                "shared key authentication - invalid "
 258                                "challenge-response");
 259                 return WLAN_STATUS_CHALLENGE_FAIL;
 260         }
 261
 262         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 263                        HOSTAPD_LEVEL_DEBUG,
 264                        "authentication OK (shared key)");
 265 #ifdef IEEE80211_REQUIRE_AUTH_ACK
 266         /* Station will be marked authenticated if it ACKs the
 267          * authentication reply. */
 268 #else
 269         sta->flags |= WLAN_STA_AUTH;
 270         wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
 271 #endif
 272         os_free(sta->challenge);
 273         sta->challenge = NULL;
 274
 275         return 0;
 276 }
 277
 278
 279 static void send_auth_reply(struct hostapd_data *hapd,
 280                             const u8 *dst, const u8 *bssid,
 281                             u16 auth_alg, u16 auth_transaction, u16 resp,
 282                             const u8 *ies, size_t ies_len)
 283 {
 284         struct ieee80211_mgmt *reply;
 285         u8 *buf;
 286         size_t rlen;
 287
 288         rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
 289         buf = os_zalloc(rlen);
 290         if (buf == NULL)
 291                 return;
 292
 293         reply = (struct ieee80211_mgmt *) buf;
 294         reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 295                                             WLAN_FC_STYPE_AUTH);
 296         os_memcpy(reply->da, dst, ETH_ALEN);
 297         os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
 298         os_memcpy(reply->bssid, bssid, ETH_ALEN);
 299
 300         reply->u.auth.auth_alg = host_to_le16(auth_alg);
 301         reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
 302         reply->u.auth.status_code = host_to_le16(resp);
 303
 304         if (ies && ies_len)
 305                 os_memcpy(reply->u.auth.variable, ies, ies_len);
 306
 307         wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
 308                    " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)",
 309                    MAC2STR(dst), auth_alg, auth_transaction,
 310                    resp, (unsigned long) ies_len);
 311         if (hapd->drv.send_mgmt_frame(hapd, reply, rlen) < 0)
 312                 perror("send_auth_reply: send");
 313
 314         os_free(buf);
 315 }
 316
 317
 318 #ifdef CONFIG_IEEE80211R
 319 static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
 320                                   u16 auth_transaction, u16 status,
 321                                   const u8 *ies, size_t ies_len)
 322 {
 323         struct hostapd_data *hapd = ctx;
 324         struct sta_info *sta;
 325
 326         send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction,
 327                         status, ies, ies_len);
 328
 329         if (status != WLAN_STATUS_SUCCESS)
 330                 return;
 331
 332         sta = ap_get_sta(hapd, dst);
 333         if (sta == NULL)
 334                 return;
 335
 336         hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
 337                        HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
 338         sta->flags |= WLAN_STA_AUTH;
 339         mlme_authenticate_indication(hapd, sta);
 340 }
 341 #endif /* CONFIG_IEEE80211R */
 342
 343
 344 static void handle_auth(struct hostapd_data *hapd,
 345                         const struct ieee80211_mgmt *mgmt, size_t len)
 346 {
 347         u16 auth_alg, auth_transaction, status_code;
 348         u16 resp = WLAN_STATUS_SUCCESS;
 349         struct sta_info *sta = NULL;
 350         int res;
 351         u16 fc;
 352         const u8 *challenge = NULL;
 353         u32 session_timeout, acct_interim_interval;
 354         int vlan_id = 0;
 355         u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
 356         size_t resp_ies_len = 0;
 357
 358         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
 359                 printf("handle_auth - too short payload (len=%lu)\n",
 360                        (unsigned long) len);
 361                 return;
 362         }
 363
 364         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
 365         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
 366         status_code = le_to_host16(mgmt->u.auth.status_code);
 367         fc = le_to_host16(mgmt->frame_control);
 368
 369         if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
 370             2 + WLAN_AUTH_CHALLENGE_LEN &&
 371             mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
 372             mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
 373                 challenge = &mgmt->u.auth.variable[2];
 374
 375         wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
 376                    "auth_transaction=%d status_code=%d wep=%d%s",
 377                    MAC2STR(mgmt->sa), auth_alg, auth_transaction,
 378                    status_code, !!(fc & WLAN_FC_ISWEP),
 379                    challenge ? " challenge" : "");
 380
 381         if (hapd->tkip_countermeasures) {
 382                 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
 383                 goto fail;
 384         }
 385
 386         if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
 387                auth_alg == WLAN_AUTH_OPEN) ||
 388 #ifdef CONFIG_IEEE80211R
 389               (hapd->conf->wpa &&
 390                (hapd->conf->wpa_key_mgmt &
 391                 (WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK)) &&
 392                auth_alg == WLAN_AUTH_FT) ||
 393 #endif /* CONFIG_IEEE80211R */
 394               ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
 395                auth_alg == WLAN_AUTH_SHARED_KEY))) {
 396                 printf("Unsupported authentication algorithm (%d)\n",
 397                        auth_alg);
 398                 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
 399                 goto fail;
 400         }
 401
 402         if (!(auth_transaction == 1 ||
 403               (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
 404                 printf("Unknown authentication transaction number (%d)\n",
 405                        auth_transaction);
 406                 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
 407                 goto fail;
 408         }
 409
 410         if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
 411                 printf("Station " MACSTR " not allowed to authenticate.\n",
 412                        MAC2STR(mgmt->sa));
 413                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 414                 goto fail;
 415         }
 416
 417         res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
 418                                       &session_timeout,
 419                                       &acct_interim_interval, &vlan_id);
 420         if (res == HOSTAPD_ACL_REJECT) {
 421                 printf("Station " MACSTR " not allowed to authenticate.\n",
 422                        MAC2STR(mgmt->sa));
 423                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 424                 goto fail;
 425         }
 426         if (res == HOSTAPD_ACL_PENDING) {
 427                 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
 428                            " waiting for an external authentication",
 429                            MAC2STR(mgmt->sa));
 430                 /* Authentication code will re-send the authentication frame
 431                  * after it has received (and cached) information from the
 432                  * external source. */
 433                 return;
 434         }
 435
 436         sta = ap_sta_add(hapd, mgmt->sa);
 437         if (!sta) {
 438                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 439                 goto fail;
 440         }
 441
 442         if (vlan_id > 0) {
 443                 if (hostapd_get_vlan_id_ifname(hapd->conf->vlan,
 444                                                vlan_id) == NULL) {
 445                         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
 446                                        HOSTAPD_LEVEL_INFO, "Invalid VLAN ID "
 447                                        "%d received from RADIUS server",
 448                                        vlan_id);
 449                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 450                         goto fail;
 451                 }
 452                 sta->vlan_id = vlan_id;
 453                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
 454                                HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
 455         }
 456
 457         sta->flags &= ~WLAN_STA_PREAUTH;
 458         ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
 459
 460         if (hapd->conf->acct_interim_interval == 0 && acct_interim_interval)
 461                 sta->acct_interim_interval = acct_interim_interval;
 462         if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
 463                 ap_sta_session_timeout(hapd, sta, session_timeout);
 464         else
 465                 ap_sta_no_session_timeout(hapd, sta);
 466
 467         switch (auth_alg) {
 468         case WLAN_AUTH_OPEN:
 469                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 470                                HOSTAPD_LEVEL_DEBUG,
 471                                "authentication OK (open system)");
 472 #ifdef IEEE80211_REQUIRE_AUTH_ACK
 473                 /* Station will be marked authenticated if it ACKs the
 474                  * authentication reply. */
 475 #else
 476                 sta->flags |= WLAN_STA_AUTH;
 477                 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
 478                 sta->auth_alg = WLAN_AUTH_OPEN;
 479                 mlme_authenticate_indication(hapd, sta);
 480 #endif
 481                 break;
 482         case WLAN_AUTH_SHARED_KEY:
 483                 resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
 484                                        fc & WLAN_FC_ISWEP);
 485                 sta->auth_alg = WLAN_AUTH_SHARED_KEY;
 486                 mlme_authenticate_indication(hapd, sta);
 487                 if (sta->challenge && auth_transaction == 1) {
 488                         resp_ies[0] = WLAN_EID_CHALLENGE;
 489                         resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
 490                         os_memcpy(resp_ies + 2, sta->challenge,
 491                                   WLAN_AUTH_CHALLENGE_LEN);
 492                         resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
 493                 }
 494                 break;
 495 #ifdef CONFIG_IEEE80211R
 496         case WLAN_AUTH_FT:
 497                 sta->auth_alg = WLAN_AUTH_FT;
 498                 if (sta->wpa_sm == NULL)
 499                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
 500                                                         sta->addr);
 501                 if (sta->wpa_sm == NULL) {
 502                         wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
 503                                    "state machine");
 504                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 505                         goto fail;
 506                 }
 507                 wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
 508                                     auth_transaction, mgmt->u.auth.variable,
 509                                     len - IEEE80211_HDRLEN -
 510                                     sizeof(mgmt->u.auth),
 511                                     handle_auth_ft_finish, hapd);
 512                 /* handle_auth_ft_finish() callback will complete auth. */
 513                 return;
 514 #endif /* CONFIG_IEEE80211R */
 515         }
 516
 517  fail:
 518         send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
 519                         auth_transaction + 1, resp, resp_ies, resp_ies_len);
 520 }
 521
 522
 523 static int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta)
 524 {
 525         int i, j = 32, aid;
 526
 527         /* get a unique AID */
 528         if (sta->aid > 0) {
 529                 wpa_printf(MSG_DEBUG, "  old AID %d", sta->aid);
 530                 return 0;
 531         }
 532
 533         for (i = 0; i < AID_WORDS; i++) {
 534                 if (hapd->sta_aid[i] == (u32) -1)
 535                         continue;
 536                 for (j = 0; j < 32; j++) {
 537                         if (!(hapd->sta_aid[i] & BIT(j)))
 538                                 break;
 539                 }
 540                 if (j < 32)
 541                         break;
 542         }
 543         if (j == 32)
 544                 return -1;
 545         aid = i * 32 + j + 1;
 546         if (aid > 2007)
 547                 return -1;
 548
 549         sta->aid = aid;
 550         hapd->sta_aid[i] |= BIT(j);
 551         wpa_printf(MSG_DEBUG, "  new AID %d", sta->aid);
 552         return 0;
 553 }
 554
 555
 556 static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta,
 557                       const u8 *ssid_ie, size_t ssid_ie_len)
 558 {
 559         if (ssid_ie == NULL)
 560                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 561
 562         if (ssid_ie_len != hapd->conf->ssid.ssid_len ||
 563             os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) {
 564                 char ssid_txt[33];
 565                 ieee802_11_print_ssid(ssid_txt, ssid_ie, ssid_ie_len);
 566                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 567                                HOSTAPD_LEVEL_INFO,
 568                                "Station tried to associate with unknown SSID "
 569                                "'%s'", ssid_txt);
 570                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 571         }
 572
 573         return WLAN_STATUS_SUCCESS;
 574 }
 575
 576
 577 static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta,
 578                      const u8 *wmm_ie, size_t wmm_ie_len)
 579 {
 580         sta->flags &= ~WLAN_STA_WMM;
 581         if (wmm_ie && hapd->conf->wmm_enabled) {
 582                 if (hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len))
 583                         hostapd_logger(hapd, sta->addr,
 584                                        HOSTAPD_MODULE_WPA,
 585                                        HOSTAPD_LEVEL_DEBUG,
 586                                        "invalid WMM element in association "
 587                                        "request");
 588                 else
 589                         sta->flags |= WLAN_STA_WMM;
 590         }
 591         return WLAN_STATUS_SUCCESS;
 592 }
 593
 594
 595 static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta,
 596                            struct ieee802_11_elems *elems)
 597 {
 598         if (!elems->supp_rates) {
 599                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 600                                HOSTAPD_LEVEL_DEBUG,
 601                                "No supported rates element in AssocReq");
 602                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 603         }
 604
 605         if (elems->supp_rates_len > sizeof(sta->supported_rates)) {
 606                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 607                                HOSTAPD_LEVEL_DEBUG,
 608                                "Invalid supported rates element length %d",
 609                                elems->supp_rates_len);
 610                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 611         }
 612
 613         os_memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
 614         os_memcpy(sta->supported_rates, elems->supp_rates,
 615                   elems->supp_rates_len);
 616         sta->supported_rates_len = elems->supp_rates_len;
 617
 618         if (elems->ext_supp_rates) {
 619                 if (elems->supp_rates_len + elems->ext_supp_rates_len >
 620                     sizeof(sta->supported_rates)) {
 621                         hostapd_logger(hapd, sta->addr,
 622                                        HOSTAPD_MODULE_IEEE80211,
 623                                        HOSTAPD_LEVEL_DEBUG,
 624                                        "Invalid supported rates element length"
 625                                        " %d+%d", elems->supp_rates_len,
 626                                        elems->ext_supp_rates_len);
 627                         return WLAN_STATUS_UNSPECIFIED_FAILURE;
 628                 }
 629
 630                 os_memcpy(sta->supported_rates + elems->supp_rates_len,
 631                           elems->ext_supp_rates, elems->ext_supp_rates_len);
 632                 sta->supported_rates_len += elems->ext_supp_rates_len;
 633         }
 634
 635         return WLAN_STATUS_SUCCESS;
 636 }
 637
 638
 639 static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta,
 640                            const u8 *ies, size_t ies_len, int reassoc)
 641 {
 642         struct ieee802_11_elems elems;
 643         u16 resp;
 644         const u8 *wpa_ie;
 645         size_t wpa_ie_len;
 646
 647         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) {
 648                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 649                                HOSTAPD_LEVEL_INFO, "Station sent an invalid "
 650                                "association request");
 651                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 652         }
 653
 654         resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len);
 655         if (resp != WLAN_STATUS_SUCCESS)
 656                 return resp;
 657         resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len);
 658         if (resp != WLAN_STATUS_SUCCESS)
 659                 return resp;
 660         resp = copy_supp_rates(hapd, sta, &elems);
 661         if (resp != WLAN_STATUS_SUCCESS)
 662                 return resp;
 663 #ifdef CONFIG_IEEE80211N
 664         resp = copy_sta_ht_capab(sta, elems.ht_capabilities,
 665                                  elems.ht_capabilities_len);
 666         if (resp != WLAN_STATUS_SUCCESS)
 667                 return resp;
 668 #endif /* CONFIG_IEEE80211N */
 669
 670         if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
 671                 wpa_ie = elems.rsn_ie;
 672                 wpa_ie_len = elems.rsn_ie_len;
 673         } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
 674                    elems.wpa_ie) {
 675                 wpa_ie = elems.wpa_ie;
 676                 wpa_ie_len = elems.wpa_ie_len;
 677         } else {
 678                 wpa_ie = NULL;
 679                 wpa_ie_len = 0;
 680         }
 681
 682 #ifdef CONFIG_WPS
 683         sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS);
 684         if (hapd->conf->wps_state && elems.wps_ie) {
 685                 wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association "
 686                            "Request - assume WPS is 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                 wpa_ie = NULL;
 692                 wpa_ie_len = 0;
 693         } else if (hapd->conf->wps_state && wpa_ie == NULL) {
 694                 wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE in "
 695                            "(Re)Association Request - possible WPS use");
 696                 sta->flags |= WLAN_STA_MAYBE_WPS;
 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
 854 #ifdef CONFIG_IEEE80211R
 855         if (status_code == WLAN_STATUS_SUCCESS) {
 856                 /* IEEE 802.11r: Mobility Domain Information, Fast BSS
 857                  * Transition Information, RSN, [RIC Response] */
 858                 p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
 859                                                 buf + sizeof(buf) - p,
 860                                                 sta->auth_alg, ies, ies_len);
 861         }
 862 #endif /* CONFIG_IEEE80211R */
 863
 864 #ifdef CONFIG_IEEE80211W
 865         if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
 866                 p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
 867 #endif /* CONFIG_IEEE80211W */
 868
 869 #ifdef CONFIG_IEEE80211N
 870         p = hostapd_eid_ht_capabilities(hapd, p);
 871         p = hostapd_eid_ht_operation(hapd, p);
 872 #endif /* CONFIG_IEEE80211N */
 873
 874         if (sta->flags & WLAN_STA_WMM)
 875                 p = hostapd_eid_wmm(hapd, p);
 876
 877         send_len += p - reply->u.assoc_resp.variable;
 878
 879         if (hapd->drv.send_mgmt_frame(hapd, reply, send_len) < 0)
 880                 wpa_printf(MSG_INFO, "Failed to send assoc resp: %s",
 881                            strerror(errno));
 882 }
 883
 884
 885 static void handle_assoc(struct hostapd_data *hapd,
 886                          const struct ieee80211_mgmt *mgmt, size_t len,
 887                          int reassoc)
 888 {
 889         u16 capab_info, listen_interval;
 890         u16 resp = WLAN_STATUS_SUCCESS;
 891         const u8 *pos;
 892         int left, i;
 893         struct sta_info *sta;
 894
 895         if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
 896                                       sizeof(mgmt->u.assoc_req))) {
 897                 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
 898                        "\n", reassoc, (unsigned long) len);
 899                 return;
 900         }
 901
 902         if (reassoc) {
 903                 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
 904                 listen_interval = le_to_host16(
 905                         mgmt->u.reassoc_req.listen_interval);
 906                 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
 907                            " capab_info=0x%02x listen_interval=%d current_ap="
 908                            MACSTR,
 909                            MAC2STR(mgmt->sa), capab_info, listen_interval,
 910                            MAC2STR(mgmt->u.reassoc_req.current_ap));
 911                 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
 912                 pos = mgmt->u.reassoc_req.variable;
 913         } else {
 914                 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
 915                 listen_interval = le_to_host16(
 916                         mgmt->u.assoc_req.listen_interval);
 917                 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
 918                            " capab_info=0x%02x listen_interval=%d",
 919                            MAC2STR(mgmt->sa), capab_info, listen_interval);
 920                 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
 921                 pos = mgmt->u.assoc_req.variable;
 922         }
 923
 924         sta = ap_get_sta(hapd, mgmt->sa);
 925 #ifdef CONFIG_IEEE80211R
 926         if (sta && sta->auth_alg == WLAN_AUTH_FT &&
 927             (sta->flags & WLAN_STA_AUTH) == 0) {
 928                 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
 929                            "prior to authentication since it is using "
 930                            "over-the-DS FT", MAC2STR(mgmt->sa));
 931         } else
 932 #endif /* CONFIG_IEEE80211R */
 933         if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
 934                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
 935                                HOSTAPD_LEVEL_INFO, "Station tried to "
 936                                "associate before authentication "
 937                                "(aid=%d flags=0x%x)",
 938                                sta ? sta->aid : -1,
 939                                sta ? sta->flags : 0);
 940                 send_deauth(hapd, mgmt->sa,
 941                             WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA);
 942                 return;
 943         }
 944
 945         if (hapd->tkip_countermeasures) {
 946                 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
 947                 goto fail;
 948         }
 949
 950         if (listen_interval > hapd->conf->max_listen_interval) {
 951                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
 952                                HOSTAPD_LEVEL_DEBUG,
 953                                "Too large Listen Interval (%d)",
 954                                listen_interval);
 955                 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
 956                 goto fail;
 957         }
 958
 959         /* followed by SSID and Supported rates; and HT capabilities if 802.11n
 960          * is used */
 961         resp = check_assoc_ies(hapd, sta, pos, left, reassoc);
 962         if (resp != WLAN_STATUS_SUCCESS)
 963                 goto fail;
 964
 965         if (hostapd_get_aid(hapd, sta) < 0) {
 966                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
 967                                HOSTAPD_LEVEL_INFO, "No room for more AIDs");
 968                 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
 969                 goto fail;
 970         }
 971
 972         sta->capability = capab_info;
 973         sta->listen_interval = listen_interval;
 974
 975         if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
 976                 sta->flags |= WLAN_STA_NONERP;
 977         for (i = 0; i < sta->supported_rates_len; i++) {
 978                 if ((sta->supported_rates[i] & 0x7f) > 22) {
 979                         sta->flags &= ~WLAN_STA_NONERP;
 980                         break;
 981                 }
 982         }
 983         if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
 984                 sta->nonerp_set = 1;
 985                 hapd->iface->num_sta_non_erp++;
 986                 if (hapd->iface->num_sta_non_erp == 1)
 987                         ieee802_11_set_beacons(hapd->iface);
 988         }
 989
 990         if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
 991             !sta->no_short_slot_time_set) {
 992                 sta->no_short_slot_time_set = 1;
 993                 hapd->iface->num_sta_no_short_slot_time++;
 994                 if (hapd->iface->current_mode->mode ==
 995                     HOSTAPD_MODE_IEEE80211G &&
 996                     hapd->iface->num_sta_no_short_slot_time == 1)
 997                         ieee802_11_set_beacons(hapd->iface);
 998         }
 999
1000         if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1001                 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
1002         else
1003                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
1004
1005         if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
1006             !sta->no_short_preamble_set) {
1007                 sta->no_short_preamble_set = 1;
1008                 hapd->iface->num_sta_no_short_preamble++;
1009                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
1010                     && hapd->iface->num_sta_no_short_preamble == 1)
1011                         ieee802_11_set_beacons(hapd->iface);
1012         }
1013
1014 #ifdef CONFIG_IEEE80211N
1015         update_ht_state(hapd, sta);
1016 #endif /* CONFIG_IEEE80211N */
1017
1018         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1019                        HOSTAPD_LEVEL_DEBUG,
1020                        "association OK (aid %d)", sta->aid);
1021         /* Station will be marked associated, after it acknowledges AssocResp
1022          */
1023
1024 #ifdef CONFIG_IEEE80211W
1025         if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) {
1026                 wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out "
1027                            "SA Query procedure", reassoc ? "re" : "");
1028                 /* TODO: Send a protected Disassociate frame to the STA using
1029                  * the old key and Reason Code "Previous Authentication no
1030                  * longer valid". Make sure this is only sent protected since
1031                  * unprotected frame would be received by the STA that is now
1032                  * trying to associate.
1033                  */
1034         }
1035 #endif /* CONFIG_IEEE80211W */
1036
1037         if (reassoc) {
1038                 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
1039                           ETH_ALEN);
1040         }
1041
1042         if (sta->last_assoc_req)
1043                 os_free(sta->last_assoc_req);
1044         sta->last_assoc_req = os_malloc(len);
1045         if (sta->last_assoc_req)
1046                 os_memcpy(sta->last_assoc_req, mgmt, len);
1047
1048         /* Make sure that the previously registered inactivity timer will not
1049          * remove the STA immediately. */
1050         sta->timeout_next = STA_NULLFUNC;
1051
1052  fail:
1053         send_assoc_resp(hapd, sta, resp, reassoc, pos, left);
1054 }
1055
1056
1057 static void handle_disassoc(struct hostapd_data *hapd,
1058                             const struct ieee80211_mgmt *mgmt, size_t len)
1059 {
1060         struct sta_info *sta;
1061
1062         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
1063                 printf("handle_disassoc - too short payload (len=%lu)\n",
1064                        (unsigned long) len);
1065                 return;
1066         }
1067
1068         wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
1069                    MAC2STR(mgmt->sa),
1070                    le_to_host16(mgmt->u.disassoc.reason_code));
1071
1072         sta = ap_get_sta(hapd, mgmt->sa);
1073         if (sta == NULL) {
1074                 printf("Station " MACSTR " trying to disassociate, but it "
1075                        "is not associated.\n", MAC2STR(mgmt->sa));
1076                 return;
1077         }
1078
1079         sta->flags &= ~WLAN_STA_ASSOC;
1080         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED MACSTR,
1081                 MAC2STR(sta->addr));
1082         wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
1083         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1084                        HOSTAPD_LEVEL_INFO, "disassociated");
1085         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1086         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1087         /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
1088          * authenticated. */
1089         accounting_sta_stop(hapd, sta);
1090         ieee802_1x_free_station(sta);
1091         hapd->drv.sta_remove(hapd, sta->addr);
1092
1093         if (sta->timeout_next == STA_NULLFUNC ||
1094             sta->timeout_next == STA_DISASSOC) {
1095                 sta->timeout_next = STA_DEAUTH;
1096                 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1097                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
1098                                        hapd, sta);
1099         }
1100
1101         mlme_disassociate_indication(
1102                 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
1103 }
1104
1105
1106 static void handle_deauth(struct hostapd_data *hapd,
1107                           const struct ieee80211_mgmt *mgmt, size_t len)
1108 {
1109         struct sta_info *sta;
1110
1111         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
1112                 printf("handle_deauth - too short payload (len=%lu)\n",
1113                        (unsigned long) len);
1114                 return;
1115         }
1116
1117         wpa_printf(MSG_DEBUG, "deauthentication: STA=" MACSTR
1118                    " reason_code=%d",
1119                    MAC2STR(mgmt->sa),
1120                    le_to_host16(mgmt->u.deauth.reason_code));
1121
1122         sta = ap_get_sta(hapd, mgmt->sa);
1123         if (sta == NULL) {
1124                 printf("Station " MACSTR " trying to deauthenticate, but it "
1125                        "is not authenticated.\n", MAC2STR(mgmt->sa));
1126                 return;
1127         }
1128
1129         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
1130         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED MACSTR,
1131                 MAC2STR(sta->addr));
1132         wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1133         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1134                        HOSTAPD_LEVEL_DEBUG, "deauthenticated");
1135         mlme_deauthenticate_indication(
1136                 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
1137         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1138         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1139         ap_free_sta(hapd, sta);
1140 }
1141
1142
1143 static void handle_beacon(struct hostapd_data *hapd,
1144                           const struct ieee80211_mgmt *mgmt, size_t len,
1145                           struct hostapd_frame_info *fi)
1146 {
1147         struct ieee802_11_elems elems;
1148
1149         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
1150                 printf("handle_beacon - too short payload (len=%lu)\n",
1151                        (unsigned long) len);
1152                 return;
1153         }
1154
1155         (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
1156                                       len - (IEEE80211_HDRLEN +
1157                                              sizeof(mgmt->u.beacon)), &elems,
1158                                       0);
1159
1160         ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
1161 }
1162
1163
1164 #ifdef CONFIG_IEEE80211W
1165
1166 /* MLME-SAQuery.request */
1167 void ieee802_11_send_sa_query_req(struct hostapd_data *hapd,
1168                                   const u8 *addr, const u8 *trans_id)
1169 {
1170         struct ieee80211_mgmt mgmt;
1171         u8 *end;
1172
1173         wpa_printf(MSG_DEBUG, "IEEE 802.11: Sending SA Query Request to "
1174                    MACSTR, MAC2STR(addr));
1175         wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
1176                     trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1177
1178         os_memset(&mgmt, 0, sizeof(mgmt));
1179         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1180                                           WLAN_FC_STYPE_ACTION);
1181         os_memcpy(mgmt.da, addr, ETH_ALEN);
1182         os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
1183         os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
1184         mgmt.u.action.category = WLAN_ACTION_SA_QUERY;
1185         mgmt.u.action.u.sa_query_req.action = WLAN_SA_QUERY_REQUEST;
1186         os_memcpy(mgmt.u.action.u.sa_query_req.trans_id, trans_id,
1187                   WLAN_SA_QUERY_TR_ID_LEN);
1188         end = mgmt.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN;
1189         if (hapd->drv.send_mgmt_frame(hapd, &mgmt, end - (u8 *) &mgmt) < 0)
1190                 perror("ieee802_11_send_sa_query_req: send");
1191 }
1192
1193
1194 static void hostapd_sa_query_request(struct hostapd_data *hapd,
1195                                      const struct ieee80211_mgmt *mgmt)
1196 {
1197         struct sta_info *sta;
1198         struct ieee80211_mgmt resp;
1199         u8 *end;
1200
1201         wpa_printf(MSG_DEBUG, "IEEE 802.11: Received SA Query Request from "
1202                    MACSTR, MAC2STR(mgmt->sa));
1203         wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
1204                     mgmt->u.action.u.sa_query_resp.trans_id,
1205                     WLAN_SA_QUERY_TR_ID_LEN);
1206
1207         sta = ap_get_sta(hapd, mgmt->sa);
1208         if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
1209                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignore SA Query Request "
1210                            "from unassociated STA " MACSTR, MAC2STR(mgmt->sa));
1211                 return;
1212         }
1213
1214         wpa_printf(MSG_DEBUG, "IEEE 802.11: Sending SA Query Response to "
1215                    MACSTR, MAC2STR(mgmt->sa));
1216
1217         os_memset(&resp, 0, sizeof(resp));
1218         resp.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1219                                           WLAN_FC_STYPE_ACTION);
1220         os_memcpy(resp.da, mgmt->sa, ETH_ALEN);
1221         os_memcpy(resp.sa, hapd->own_addr, ETH_ALEN);
1222         os_memcpy(resp.bssid, hapd->own_addr, ETH_ALEN);
1223         resp.u.action.category = WLAN_ACTION_SA_QUERY;
1224         resp.u.action.u.sa_query_req.action = WLAN_SA_QUERY_RESPONSE;
1225         os_memcpy(resp.u.action.u.sa_query_req.trans_id,
1226                   mgmt->u.action.u.sa_query_req.trans_id,
1227                   WLAN_SA_QUERY_TR_ID_LEN);
1228         end = resp.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN;
1229         if (hapd->drv.send_mgmt_frame(hapd, &resp, end - (u8 *) &resp) < 0)
1230                 perror("hostapd_sa_query_request: send");
1231 }
1232
1233
1234 static void hostapd_sa_query_action(struct hostapd_data *hapd,
1235                                     const struct ieee80211_mgmt *mgmt,
1236                                     size_t len)
1237 {
1238         struct sta_info *sta;
1239         const u8 *end;
1240         int i;
1241
1242         end = mgmt->u.action.u.sa_query_resp.trans_id +
1243                 WLAN_SA_QUERY_TR_ID_LEN;
1244         if (((u8 *) mgmt) + len < end) {
1245                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action "
1246                            "frame (len=%lu)", (unsigned long) len);
1247                 return;
1248         }
1249
1250         if (mgmt->u.action.u.sa_query_resp.action == WLAN_SA_QUERY_REQUEST) {
1251                 hostapd_sa_query_request(hapd, mgmt);
1252                 return;
1253         }
1254
1255         if (mgmt->u.action.u.sa_query_resp.action != WLAN_SA_QUERY_RESPONSE) {
1256                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Unexpected SA Query "
1257                            "Action %d", mgmt->u.action.u.sa_query_resp.action);
1258                 return;
1259         }
1260
1261         wpa_printf(MSG_DEBUG, "IEEE 802.11: Received SA Query Response from "
1262                    MACSTR, MAC2STR(mgmt->sa));
1263         wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
1264                     mgmt->u.action.u.sa_query_resp.trans_id,
1265                     WLAN_SA_QUERY_TR_ID_LEN);
1266
1267         /* MLME-SAQuery.confirm */
1268
1269         sta = ap_get_sta(hapd, mgmt->sa);
1270         if (sta == NULL || sta->sa_query_trans_id == NULL) {
1271                 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching STA with "
1272                            "pending SA Query request found");
1273                 return;
1274         }
1275
1276         for (i = 0; i < sta->sa_query_count; i++) {
1277                 if (os_memcmp(sta->sa_query_trans_id +
1278                               i * WLAN_SA_QUERY_TR_ID_LEN,
1279                               mgmt->u.action.u.sa_query_resp.trans_id,
1280                               WLAN_SA_QUERY_TR_ID_LEN) == 0)
1281                         break;
1282         }
1283
1284         if (i >= sta->sa_query_count) {
1285                 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching SA Query "
1286                            "transaction identifier found");
1287                 return;
1288         }
1289
1290         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1291                        HOSTAPD_LEVEL_DEBUG,
1292                        "Reply to pending SA Query received");
1293         ap_sta_stop_sa_query(hapd, sta);
1294 }
1295
1296
1297 static int robust_action_frame(u8 category)
1298 {
1299         return category != WLAN_ACTION_PUBLIC &&
1300                 category != WLAN_ACTION_HT;
1301 }
1302 #endif /* CONFIG_IEEE80211W */
1303
1304
1305 static void handle_action(struct hostapd_data *hapd,
1306                           const struct ieee80211_mgmt *mgmt, size_t len)
1307 {
1308         struct sta_info *sta;
1309
1310         if (len < IEEE80211_HDRLEN + 1) {
1311                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1312                                HOSTAPD_LEVEL_DEBUG,
1313                                "handle_action - too short payload (len=%lu)",
1314                                (unsigned long) len);
1315                 return;
1316         }
1317
1318         sta = ap_get_sta(hapd, mgmt->sa);
1319 #ifdef CONFIG_IEEE80211W
1320         if (sta && (sta->flags & WLAN_STA_MFP) &&
1321             !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP) &&
1322               robust_action_frame(mgmt->u.action.category))) {
1323                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1324                                HOSTAPD_LEVEL_DEBUG,
1325                                "Dropped unprotected Robust Action frame from "
1326                                "an MFP STA");
1327                 return;
1328         }
1329 #endif /* CONFIG_IEEE80211W */
1330
1331         switch (mgmt->u.action.category) {
1332 #ifdef CONFIG_IEEE80211R
1333         case WLAN_ACTION_FT:
1334         {
1335                 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
1336                         wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored FT Action "
1337                                    "frame from unassociated STA " MACSTR,
1338                                    MAC2STR(mgmt->sa));
1339                         return;
1340                 }
1341
1342                 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
1343                                      len - IEEE80211_HDRLEN))
1344                         break;
1345
1346                 return;
1347         }
1348 #endif /* CONFIG_IEEE80211R */
1349         case WLAN_ACTION_WMM:
1350                 hostapd_wmm_action(hapd, mgmt, len);
1351                 return;
1352 #ifdef CONFIG_IEEE80211W
1353         case WLAN_ACTION_SA_QUERY:
1354                 hostapd_sa_query_action(hapd, mgmt, len);
1355                 return;
1356 #endif /* CONFIG_IEEE80211W */
1357         case WLAN_ACTION_PUBLIC:
1358                 if (hapd->public_action_cb) {
1359                         hapd->public_action_cb(hapd->public_action_cb_ctx,
1360                                                (u8 *) mgmt, len,
1361                                                hapd->iface->freq);
1362                         return;
1363                 }
1364                 break;
1365         }
1366
1367         hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1368                        HOSTAPD_LEVEL_DEBUG,
1369                        "handle_action - unknown action category %d or invalid "
1370                        "frame",
1371                        mgmt->u.action.category);
1372         if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
1373             !(mgmt->sa[0] & 0x01)) {
1374                 struct ieee80211_mgmt *resp;
1375
1376                 /*
1377                  * IEEE 802.11-REVma/D9.0 - 7.3.1.11
1378                  * Return the Action frame to the source without change
1379                  * except that MSB of the Category set to 1.
1380                  */
1381                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
1382                            "frame back to sender");
1383                 resp = os_malloc(len);
1384                 if (resp == NULL)
1385                         return;
1386                 os_memcpy(resp, mgmt, len);
1387                 os_memcpy(resp->da, resp->sa, ETH_ALEN);
1388                 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
1389                 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
1390                 resp->u.action.category |= 0x80;
1391
1392                 hapd->drv.send_mgmt_frame(hapd, resp, len);
1393                 os_free(resp);
1394         }
1395 }
1396
1397
1398 /**
1399  * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
1400  * @hapd: hostapd BSS data structure (the BSS to which the management frame was
1401  * sent to)
1402  * @buf: management frame data (starting from IEEE 802.11 header)
1403  * @len: length of frame data in octets
1404  * @fi: meta data about received frame (signal level, etc.)
1405  *
1406  * Process all incoming IEEE 802.11 management frames. This will be called for
1407  * each frame received from the kernel driver through wlan#ap interface. In
1408  * addition, it can be called to re-inserted pending frames (e.g., when using
1409  * external RADIUS server as an MAC ACL).
1410  */
1411 void ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len,
1412                      struct hostapd_frame_info *fi)
1413 {
1414         struct ieee80211_mgmt *mgmt;
1415         int broadcast;
1416         u16 fc, stype;
1417
1418         mgmt = (struct ieee80211_mgmt *) buf;
1419         fc = le_to_host16(mgmt->frame_control);
1420         stype = WLAN_FC_GET_STYPE(fc);
1421
1422         if (stype == WLAN_FC_STYPE_BEACON) {
1423                 handle_beacon(hapd, mgmt, len, fi);
1424                 return;
1425         }
1426
1427         broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
1428                 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
1429                 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
1430
1431         if (!broadcast &&
1432             os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
1433                 printf("MGMT: BSSID=" MACSTR " not our address\n",
1434                        MAC2STR(mgmt->bssid));
1435                 return;
1436         }
1437
1438
1439         if (stype == WLAN_FC_STYPE_PROBE_REQ) {
1440                 handle_probe_req(hapd, mgmt, len);
1441                 return;
1442         }
1443
1444         if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
1445                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1446                                HOSTAPD_LEVEL_DEBUG,
1447                                "MGMT: DA=" MACSTR " not our address",
1448                                MAC2STR(mgmt->da));
1449                 return;
1450         }
1451
1452         switch (stype) {
1453         case WLAN_FC_STYPE_AUTH:
1454                 wpa_printf(MSG_DEBUG, "mgmt::auth");
1455                 handle_auth(hapd, mgmt, len);
1456                 break;
1457         case WLAN_FC_STYPE_ASSOC_REQ:
1458                 wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
1459                 handle_assoc(hapd, mgmt, len, 0);
1460                 break;
1461         case WLAN_FC_STYPE_REASSOC_REQ:
1462                 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
1463                 handle_assoc(hapd, mgmt, len, 1);
1464                 break;
1465         case WLAN_FC_STYPE_DISASSOC:
1466                 wpa_printf(MSG_DEBUG, "mgmt::disassoc");
1467                 handle_disassoc(hapd, mgmt, len);
1468                 break;
1469         case WLAN_FC_STYPE_DEAUTH:
1470                 wpa_printf(MSG_DEBUG, "mgmt::deauth");
1471                 handle_deauth(hapd, mgmt, len);
1472                 break;
1473         case WLAN_FC_STYPE_ACTION:
1474                 wpa_printf(MSG_DEBUG, "mgmt::action");
1475                 handle_action(hapd, mgmt, len);
1476                 break;
1477         default:
1478                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1479                                HOSTAPD_LEVEL_DEBUG,
1480                                "unknown mgmt frame subtype %d", stype);
1481                 break;
1482         }
1483 }
1484
1485
1486 static void handle_auth_cb(struct hostapd_data *hapd,
1487                            const struct ieee80211_mgmt *mgmt,
1488                            size_t len, int ok)
1489 {
1490         u16 auth_alg, auth_transaction, status_code;
1491         struct sta_info *sta;
1492
1493         if (!ok) {
1494                 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1495                                HOSTAPD_LEVEL_NOTICE,
1496                                "did not acknowledge authentication response");
1497                 return;
1498         }
1499
1500         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
1501                 printf("handle_auth_cb - too short payload (len=%lu)\n",
1502                        (unsigned long) len);
1503                 return;
1504         }
1505
1506         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1507         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1508         status_code = le_to_host16(mgmt->u.auth.status_code);
1509
1510         sta = ap_get_sta(hapd, mgmt->da);
1511         if (!sta) {
1512                 printf("handle_auth_cb: STA " MACSTR " not found\n",
1513                        MAC2STR(mgmt->da));
1514                 return;
1515         }
1516
1517         if (status_code == WLAN_STATUS_SUCCESS &&
1518             ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
1519              (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
1520                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1521                                HOSTAPD_LEVEL_INFO, "authenticated");
1522                 sta->flags |= WLAN_STA_AUTH;
1523         }
1524 }
1525
1526
1527 static void handle_assoc_cb(struct hostapd_data *hapd,
1528                             const struct ieee80211_mgmt *mgmt,
1529                             size_t len, int reassoc, int ok)
1530 {
1531         u16 status;
1532         struct sta_info *sta;
1533         int new_assoc = 1;
1534         struct ieee80211_ht_capabilities ht_cap;
1535
1536         if (!ok) {
1537                 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1538                                HOSTAPD_LEVEL_DEBUG,
1539                                "did not acknowledge association response");
1540                 return;
1541         }
1542
1543         if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
1544                                       sizeof(mgmt->u.assoc_resp))) {
1545                 printf("handle_assoc_cb(reassoc=%d) - too short payload "
1546                        "(len=%lu)\n", reassoc, (unsigned long) len);
1547                 return;
1548         }
1549
1550         if (reassoc)
1551                 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
1552         else
1553                 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1554
1555         sta = ap_get_sta(hapd, mgmt->da);
1556         if (!sta) {
1557                 printf("handle_assoc_cb: STA " MACSTR " not found\n",
1558                        MAC2STR(mgmt->da));
1559                 return;
1560         }
1561
1562         if (status != WLAN_STATUS_SUCCESS)
1563                 goto fail;
1564
1565         /* Stop previous accounting session, if one is started, and allocate
1566          * new session id for the new session. */
1567         accounting_sta_stop(hapd, sta);
1568
1569         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1570                        HOSTAPD_LEVEL_INFO,
1571                        "associated (aid %d)",
1572                        sta->aid);
1573
1574         if (sta->flags & WLAN_STA_ASSOC)
1575                 new_assoc = 0;
1576         sta->flags |= WLAN_STA_ASSOC;
1577         if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa) ||
1578             sta->auth_alg == WLAN_AUTH_FT) {
1579                 /*
1580                  * Open, static WEP, or FT protocol; no separate authorization
1581                  * step.
1582                  */
1583                 sta->flags |= WLAN_STA_AUTHORIZED;
1584                 wpa_msg(hapd->msg_ctx, MSG_INFO,
1585                         AP_STA_CONNECTED MACSTR, MAC2STR(sta->addr));
1586         }
1587
1588         if (reassoc)
1589                 mlme_reassociate_indication(hapd, sta);
1590         else
1591                 mlme_associate_indication(hapd, sta);
1592
1593 #ifdef CONFIG_IEEE80211W
1594         sta->sa_query_timed_out = 0;
1595 #endif /* CONFIG_IEEE80211W */
1596
1597         /*
1598          * Remove the STA entry in order to make sure the STA PS state gets
1599          * cleared and configuration gets updated in case of reassociation back
1600          * to the same AP.
1601          */
1602         hapd->drv.sta_remove(hapd, sta->addr);
1603
1604 #ifdef CONFIG_IEEE80211N
1605         if (sta->flags & WLAN_STA_HT)
1606                 hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap);
1607 #endif /* CONFIG_IEEE80211N */
1608
1609         if (hapd->drv.sta_add(hapd, sta->addr, sta->aid, sta->capability,
1610                               sta->supported_rates, sta->supported_rates_len,
1611                               sta->listen_interval,
1612                               sta->flags & WLAN_STA_HT ? &ht_cap : NULL)) {
1613                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1614                                HOSTAPD_LEVEL_NOTICE,
1615                                "Could not add STA to kernel driver");
1616         }
1617
1618         if (sta->eapol_sm == NULL) {
1619                 /*
1620                  * This STA does not use RADIUS server for EAP authentication,
1621                  * so bind it to the selected VLAN interface now, since the
1622                  * interface selection is not going to change anymore.
1623                  */
1624                 if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
1625                         goto fail;
1626         } else if (sta->vlan_id) {
1627                 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
1628                 if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
1629                         goto fail;
1630         }
1631
1632         hapd->drv.set_sta_flags(hapd, sta);
1633
1634         if (sta->auth_alg == WLAN_AUTH_FT)
1635                 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
1636         else
1637                 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
1638         hapd->new_assoc_sta_cb(hapd, sta, !new_assoc);
1639
1640         ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
1641
1642  fail:
1643         /* Copy of the association request is not needed anymore */
1644         if (sta->last_assoc_req) {
1645                 os_free(sta->last_assoc_req);
1646                 sta->last_assoc_req = NULL;
1647         }
1648 }
1649
1650
1651 /**
1652  * ieee802_11_mgmt_cb - Process management frame TX status callback
1653  * @hapd: hostapd BSS data structure (the BSS from which the management frame
1654  * was sent from)
1655  * @buf: management frame data (starting from IEEE 802.11 header)
1656  * @len: length of frame data in octets
1657  * @stype: management frame subtype from frame control field
1658  * @ok: Whether the frame was ACK'ed
1659  */
1660 void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len,
1661                         u16 stype, int ok)
1662 {
1663         const struct ieee80211_mgmt *mgmt;
1664         mgmt = (const struct ieee80211_mgmt *) buf;
1665
1666         switch (stype) {
1667         case WLAN_FC_STYPE_AUTH:
1668                 wpa_printf(MSG_DEBUG, "mgmt::auth cb");
1669                 handle_auth_cb(hapd, mgmt, len, ok);
1670                 break;
1671         case WLAN_FC_STYPE_ASSOC_RESP:
1672                 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
1673                 handle_assoc_cb(hapd, mgmt, len, 0, ok);
1674                 break;
1675         case WLAN_FC_STYPE_REASSOC_RESP:
1676                 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
1677                 handle_assoc_cb(hapd, mgmt, len, 1, ok);
1678                 break;
1679         case WLAN_FC_STYPE_PROBE_RESP:
1680                 wpa_printf(MSG_DEBUG, "mgmt::proberesp cb");
1681                 break;
1682         case WLAN_FC_STYPE_DEAUTH:
1683                 /* ignore */
1684                 break;
1685         case WLAN_FC_STYPE_ACTION:
1686                 wpa_printf(MSG_DEBUG, "mgmt::action cb");
1687                 break;
1688         default:
1689                 printf("unknown mgmt cb frame subtype %d\n", stype);
1690                 break;
1691         }
1692 }
1693
1694
1695 int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
1696 {
1697         /* TODO */
1698         return 0;
1699 }
1700
1701
1702 int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
1703                            char *buf, size_t buflen)
1704 {
1705         /* TODO */
1706         return 0;
1707 }
1708
1709
1710 void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
1711                        const u8 *buf, size_t len, int ack)
1712 {
1713         struct sta_info *sta;
1714         struct hostapd_iface *iface = hapd->iface;
1715
1716         sta = ap_get_sta(hapd, addr);
1717         if (sta == NULL && iface->num_bss > 1) {
1718                 size_t j;
1719                 for (j = 0; j < iface->num_bss; j++) {
1720                         hapd = iface->bss[j];
1721                         sta = ap_get_sta(hapd, addr);
1722                         if (sta)
1723                                 break;
1724                 }
1725         }
1726         if (sta == NULL)
1727                 return;
1728         if (sta->flags & WLAN_STA_PENDING_POLL) {
1729                 wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
1730                            "activity poll", MAC2STR(sta->addr),
1731                            ack ? "ACKed" : "did not ACK");
1732                 if (ack)
1733                         sta->flags &= ~WLAN_STA_PENDING_POLL;
1734         }
1735
1736         ieee802_1x_tx_status(hapd, sta, buf, len, ack);
1737 }
1738
1739
1740 void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src,
1741                                 int wds)
1742 {
1743         struct sta_info *sta;
1744
1745         sta = ap_get_sta(hapd, src);
1746         if (sta && (sta->flags & WLAN_STA_ASSOC)) {
1747                 if (wds && !(sta->flags & WLAN_STA_WDS)) {
1748                         wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for "
1749                                    "STA " MACSTR " (aid %u)",
1750                                    MAC2STR(sta->addr), sta->aid);
1751                         sta->flags |= WLAN_STA_WDS;
1752                         hapd->drv.set_wds_sta(hapd, sta->addr, sta->aid, 1);
1753                 }
1754                 return;
1755         }
1756
1757         wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA "
1758                    MACSTR, MAC2STR(src));
1759         if (sta && (sta->flags & WLAN_STA_AUTH))
1760                 hapd->drv.sta_disassoc(
1761                         hapd, src,
1762                         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1763         else
1764                 hapd->drv.sta_deauth(
1765                         hapd, src,
1766                         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1767 }
1768
1769
1770 #endif /* CONFIG_NATIVE_WINDOWS */