vcs.maemo.org Git - wpasupplicant/blob - hostapd/ieee802_11.c

   1 /*
   2  * hostapd / IEEE 802.11 Management
   3  * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2007-2008, Intel Corporation
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * Alternatively, this software may be distributed under the terms of BSD
  11  * license.
  12  *
  13  * See README and COPYING for more details.
  14  */
  15
  16 #include "includes.h"
  17
  18 #ifndef CONFIG_NATIVE_WINDOWS
  19
  20 #include <net/if.h>
  21
  22 #include "eloop.h"
  23 #include "hostapd.h"
  24 #include "ieee802_11.h"
  25 #include "beacon.h"
  26 #include "hw_features.h"
  27 #include "radius/radius.h"
  28 #include "radius/radius_client.h"
  29 #include "ieee802_11_auth.h"
  30 #include "sta_info.h"
  31 #include "rc4.h"
  32 #include "ieee802_1x.h"
  33 #include "wpa.h"
  34 #include "wme.h"
  35 #include "ap_list.h"
  36 #include "accounting.h"
  37 #include "driver_i.h"
  38 #include "mlme.h"
  39
  40
  41 u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
  42 {
  43         u8 *pos = eid;
  44         int i, num, count;
  45
  46         if (hapd->iface->current_rates == NULL)
  47                 return eid;
  48
  49         *pos++ = WLAN_EID_SUPP_RATES;
  50         num = hapd->iface->num_rates;
  51         if (num > 8) {
  52                 /* rest of the rates are encoded in Extended supported
  53                  * rates element */
  54                 num = 8;
  55         }
  56
  57         *pos++ = num;
  58         count = 0;
  59         for (i = 0, count = 0; i < hapd->iface->num_rates && count < num;
  60              i++) {
  61                 count++;
  62                 *pos = hapd->iface->current_rates[i].rate / 5;
  63                 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
  64                         *pos |= 0x80;
  65                 pos++;
  66         }
  67
  68         return pos;
  69 }
  70
  71
  72 u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
  73 {
  74         u8 *pos = eid;
  75         int i, num, count;
  76
  77         if (hapd->iface->current_rates == NULL)
  78                 return eid;
  79
  80         num = hapd->iface->num_rates;
  81         if (num <= 8)
  82                 return eid;
  83         num -= 8;
  84
  85         *pos++ = WLAN_EID_EXT_SUPP_RATES;
  86         *pos++ = num;
  87         count = 0;
  88         for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
  89              i++) {
  90                 count++;
  91                 if (count <= 8)
  92                         continue; /* already in SuppRates IE */
  93                 *pos = hapd->iface->current_rates[i].rate / 5;
  94                 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
  95                         *pos |= 0x80;
  96                 pos++;
  97         }
  98
  99         return pos;
 100 }
 101
 102
 103 u8 * hostapd_eid_ht_capabilities_info(struct hostapd_data *hapd, u8 *eid)
 104 {
 105 #ifdef CONFIG_IEEE80211N
 106         struct ieee80211_ht_capability *cap;
 107         u8 *pos = eid;
 108
 109         if (!hapd->iconf->ieee80211n)
 110                 return eid;
 111
 112         *pos++ = WLAN_EID_HT_CAP;
 113         *pos++ = sizeof(*cap);
 114
 115         cap = (struct ieee80211_ht_capability *) pos;
 116         os_memset(cap, 0, sizeof(*cap));
 117         SET_2BIT_U8(&cap->mac_ht_params_info,
 118                     MAC_HT_PARAM_INFO_MAX_RX_AMPDU_FACTOR_OFFSET,
 119                     MAX_RX_AMPDU_FACTOR_64KB);
 120
 121         cap->capabilities_info = host_to_le16(hapd->iconf->ht_capab);
 122
 123         cap->supported_mcs_set[0] = 0xff;
 124         cap->supported_mcs_set[1] = 0xff;
 125
 126         pos += sizeof(*cap);
 127
 128         return pos;
 129 #else /* CONFIG_IEEE80211N */
 130         return eid;
 131 #endif /* CONFIG_IEEE80211N */
 132 }
 133
 134
 135 u8 * hostapd_eid_ht_operation(struct hostapd_data *hapd, u8 *eid)
 136 {
 137 #ifdef CONFIG_IEEE80211N
 138         struct ieee80211_ht_operation *oper;
 139         u8 *pos = eid;
 140
 141         if (!hapd->iconf->ieee80211n)
 142                 return eid;
 143
 144         *pos++ = WLAN_EID_HT_OPERATION;
 145         *pos++ = sizeof(*oper);
 146
 147         oper = (struct ieee80211_ht_operation *) pos;
 148         os_memset(oper, 0, sizeof(*oper));
 149
 150         oper->control_chan = hapd->iconf->channel;
 151         oper->operation_mode = host_to_le16(hapd->iface->ht_op_mode);
 152         if (hapd->iconf->secondary_channel == 1)
 153                 oper->ht_param |= HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE |
 154                         HT_INFO_HT_PARAM_REC_TRANS_CHNL_WIDTH;
 155         if (hapd->iconf->secondary_channel == -1)
 156                 oper->ht_param |= HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW |
 157                         HT_INFO_HT_PARAM_REC_TRANS_CHNL_WIDTH;
 158
 159         pos += sizeof(*oper);
 160
 161         return pos;
 162 #else /* CONFIG_IEEE80211N */
 163         return eid;
 164 #endif /* CONFIG_IEEE80211N */
 165 }
 166
 167
 168 #ifdef CONFIG_IEEE80211N
 169
 170 /*
 171 op_mode
 172 Set to 0 (HT pure) under the followign conditions
 173         - all STAs in the BSS are 20/40 MHz HT in 20/40 MHz BSS or
 174         - all STAs in the BSS are 20 MHz HT in 20 MHz BSS
 175 Set to 1 (HT non-member protection) if there may be non-HT STAs
 176         in both the primary and the secondary channel
 177 Set to 2 if only HT STAs are associated in BSS,
 178         however and at least one 20 MHz HT STA is associated
 179 Set to 3 (HT mixed mode) when one or more non-HT STAs are associated
 180         (currently non-GF HT station is considered as non-HT STA also)
 181 */
 182 int hostapd_ht_operation_update(struct hostapd_iface *iface)
 183 {
 184         u16 cur_op_mode, new_op_mode;
 185         int op_mode_changes = 0;
 186
 187         if (!iface->conf->ieee80211n || iface->conf->ht_op_mode_fixed)
 188                 return 0;
 189
 190         wpa_printf(MSG_DEBUG, "%s current operation mode=0x%X",
 191                    __func__, iface->ht_op_mode);
 192
 193         if (!(iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT)
 194             && iface->num_sta_ht_no_gf) {
 195                 iface->ht_op_mode |=
 196                         HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT;
 197                 op_mode_changes++;
 198         } else if ((iface->ht_op_mode &
 199                     HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT) &&
 200                    iface->num_sta_ht_no_gf == 0) {
 201                 iface->ht_op_mode &=
 202                         ~HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT;
 203                 op_mode_changes++;
 204         }
 205
 206         if (!(iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT) &&
 207             (iface->num_sta_no_ht || iface->olbc_ht)) {
 208                 iface->ht_op_mode |= HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT;
 209                 op_mode_changes++;
 210         } else if ((iface->ht_op_mode &
 211                     HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT) &&
 212                    (iface->num_sta_no_ht == 0 && !iface->olbc_ht)) {
 213                 iface->ht_op_mode &=
 214                         ~HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT;
 215                 op_mode_changes++;
 216         }
 217
 218         /* Note: currently we switch to the MIXED op mode if HT non-greenfield
 219          * station is associated. Probably it's a theoretical case, since
 220          * it looks like all known HT STAs support greenfield.
 221          */
 222         new_op_mode = 0;
 223         if (iface->num_sta_no_ht ||
 224             (iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT))
 225                 new_op_mode = OP_MODE_MIXED;
 226         else if ((iface->conf->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)
 227                  && iface->num_sta_ht_20mhz)
 228                 new_op_mode = OP_MODE_20MHZ_HT_STA_ASSOCED;
 229         else if (iface->olbc_ht)
 230                 new_op_mode = OP_MODE_MAY_BE_LEGACY_STAS;
 231         else
 232                 new_op_mode = OP_MODE_PURE;
 233
 234         cur_op_mode = iface->ht_op_mode & HT_INFO_OPERATION_MODE_OP_MODE_MASK;
 235         if (cur_op_mode != new_op_mode) {
 236                 iface->ht_op_mode &= ~HT_INFO_OPERATION_MODE_OP_MODE_MASK;
 237                 iface->ht_op_mode |= new_op_mode;
 238                 op_mode_changes++;
 239         }
 240
 241         wpa_printf(MSG_DEBUG, "%s new operation mode=0x%X changes=%d",
 242                    __func__, iface->ht_op_mode, op_mode_changes);
 243
 244         return op_mode_changes;
 245 }
 246
 247 #endif /* CONFIG_IEEE80211N */
 248
 249
 250 u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta,
 251                            int probe)
 252 {
 253         int capab = WLAN_CAPABILITY_ESS;
 254         int privacy;
 255
 256         if (hapd->iface->num_sta_no_short_preamble == 0 &&
 257             hapd->iconf->preamble == SHORT_PREAMBLE)
 258                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
 259
 260         privacy = hapd->conf->ssid.wep.keys_set;
 261
 262         if (hapd->conf->ieee802_1x &&
 263             (hapd->conf->default_wep_key_len ||
 264              hapd->conf->individual_wep_key_len))
 265                 privacy = 1;
 266
 267         if (hapd->conf->wpa)
 268                 privacy = 1;
 269
 270         if (sta) {
 271                 int policy, def_klen;
 272                 if (probe && sta->ssid_probe) {
 273                         policy = sta->ssid_probe->security_policy;
 274                         def_klen = sta->ssid_probe->wep.default_len;
 275                 } else {
 276                         policy = sta->ssid->security_policy;
 277                         def_klen = sta->ssid->wep.default_len;
 278                 }
 279                 privacy = policy != SECURITY_PLAINTEXT;
 280                 if (policy == SECURITY_IEEE_802_1X && def_klen == 0)
 281                         privacy = 0;
 282         }
 283
 284         if (privacy)
 285                 capab |= WLAN_CAPABILITY_PRIVACY;
 286
 287         if (hapd->iface->current_mode &&
 288             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
 289             hapd->iface->num_sta_no_short_slot_time == 0)
 290                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
 291
 292         return capab;
 293 }
 294
 295
 296 #ifdef CONFIG_IEEE80211W
 297 static u8 * hostapd_eid_assoc_comeback_time(struct hostapd_data *hapd,
 298                                             struct sta_info *sta, u8 *eid)
 299 {
 300         u8 *pos = eid;
 301         u32 timeout, tu;
 302         struct os_time now, passed;
 303
 304         *pos++ = WLAN_EID_TIMEOUT_INTERVAL;
 305         *pos++ = 5;
 306         *pos++ = WLAN_TIMEOUT_ASSOC_COMEBACK;
 307         os_get_time(&now);
 308         os_time_sub(&now, &sta->sa_query_start, &passed);
 309         tu = (passed.sec * 1000000 + passed.usec) / 1024;
 310         if (hapd->conf->assoc_sa_query_max_timeout > tu)
 311                 timeout = hapd->conf->assoc_sa_query_max_timeout - tu;
 312         else
 313                 timeout = 0;
 314         if (timeout < hapd->conf->assoc_sa_query_max_timeout)
 315                 timeout++; /* add some extra time for local timers */
 316         WPA_PUT_LE32(pos, timeout);
 317         pos += 4;
 318
 319         return pos;
 320 }
 321 #endif /* CONFIG_IEEE80211W */
 322
 323
 324 void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len)
 325 {
 326         int i;
 327         if (len > HOSTAPD_MAX_SSID_LEN)
 328                 len = HOSTAPD_MAX_SSID_LEN;
 329         for (i = 0; i < len; i++) {
 330                 if (ssid[i] >= 32 && ssid[i] < 127)
 331                         buf[i] = ssid[i];
 332                 else
 333                         buf[i] = '.';
 334         }
 335         buf[len] = '\0';
 336 }
 337
 338
 339 /**
 340  * ieee802_11_send_deauth - Send Deauthentication frame
 341  * @hapd: hostapd BSS data
 342  * @addr: Address of the destination STA
 343  * @reason: Reason code for Deauthentication
 344  */
 345 void ieee802_11_send_deauth(struct hostapd_data *hapd, u8 *addr, u16 reason)
 346 {
 347         struct ieee80211_mgmt mgmt;
 348
 349         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
 350                        HOSTAPD_LEVEL_DEBUG,
 351                        "deauthenticate - reason %d", reason);
 352         os_memset(&mgmt, 0, sizeof(mgmt));
 353         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 354                                           WLAN_FC_STYPE_DEAUTH);
 355         os_memcpy(mgmt.da, addr, ETH_ALEN);
 356         os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
 357         os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
 358         mgmt.u.deauth.reason_code = host_to_le16(reason);
 359         if (hostapd_send_mgmt_frame(hapd, &mgmt, IEEE80211_HDRLEN +
 360                                     sizeof(mgmt.u.deauth), 0) < 0)
 361                 perror("ieee802_11_send_deauth: send");
 362 }
 363
 364
 365 static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
 366                            u16 auth_transaction, u8 *challenge, int iswep)
 367 {
 368         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 369                        HOSTAPD_LEVEL_DEBUG,
 370                        "authentication (shared key, transaction %d)",
 371                        auth_transaction);
 372
 373         if (auth_transaction == 1) {
 374                 if (!sta->challenge) {
 375                         /* Generate a pseudo-random challenge */
 376                         u8 key[8];
 377                         time_t now;
 378                         int r;
 379                         sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
 380                         if (sta->challenge == NULL)
 381                                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 382
 383                         now = time(NULL);
 384                         r = random();
 385                         os_memcpy(key, &now, 4);
 386                         os_memcpy(key + 4, &r, 4);
 387                         rc4(sta->challenge, WLAN_AUTH_CHALLENGE_LEN,
 388                             key, sizeof(key));
 389                 }
 390                 return 0;
 391         }
 392
 393         if (auth_transaction != 3)
 394                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 395
 396         /* Transaction 3 */
 397         if (!iswep || !sta->challenge || !challenge ||
 398             os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) {
 399                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 400                                HOSTAPD_LEVEL_INFO,
 401                                "shared key authentication - invalid "
 402                                "challenge-response");
 403                 return WLAN_STATUS_CHALLENGE_FAIL;
 404         }
 405
 406         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 407                        HOSTAPD_LEVEL_DEBUG,
 408                        "authentication OK (shared key)");
 409 #ifdef IEEE80211_REQUIRE_AUTH_ACK
 410         /* Station will be marked authenticated if it ACKs the
 411          * authentication reply. */
 412 #else
 413         sta->flags |= WLAN_STA_AUTH;
 414         wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
 415 #endif
 416         os_free(sta->challenge);
 417         sta->challenge = NULL;
 418
 419         return 0;
 420 }
 421
 422
 423 static void send_auth_reply(struct hostapd_data *hapd,
 424                             const u8 *dst, const u8 *bssid,
 425                             u16 auth_alg, u16 auth_transaction, u16 resp,
 426                             const u8 *ies, size_t ies_len)
 427 {
 428         struct ieee80211_mgmt *reply;
 429         u8 *buf;
 430         size_t rlen;
 431
 432         rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
 433         buf = os_zalloc(rlen);
 434         if (buf == NULL)
 435                 return;
 436
 437         reply = (struct ieee80211_mgmt *) buf;
 438         reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 439                                             WLAN_FC_STYPE_AUTH);
 440         os_memcpy(reply->da, dst, ETH_ALEN);
 441         os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
 442         os_memcpy(reply->bssid, bssid, ETH_ALEN);
 443
 444         reply->u.auth.auth_alg = host_to_le16(auth_alg);
 445         reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
 446         reply->u.auth.status_code = host_to_le16(resp);
 447
 448         if (ies && ies_len)
 449                 os_memcpy(reply->u.auth.variable, ies, ies_len);
 450
 451         wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
 452                    " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)",
 453                    MAC2STR(dst), auth_alg, auth_transaction,
 454                    resp, (unsigned long) ies_len);
 455         if (hostapd_send_mgmt_frame(hapd, reply, rlen, 0) < 0)
 456                 perror("send_auth_reply: send");
 457
 458         os_free(buf);
 459 }
 460
 461
 462 #ifdef CONFIG_IEEE80211R
 463 static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
 464                                   u16 auth_transaction, u16 status,
 465                                   const u8 *ies, size_t ies_len)
 466 {
 467         struct hostapd_data *hapd = ctx;
 468         struct sta_info *sta;
 469
 470         send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction,
 471                         status, ies, ies_len);
 472
 473         if (status != WLAN_STATUS_SUCCESS)
 474                 return;
 475
 476         sta = ap_get_sta(hapd, dst);
 477         if (sta == NULL)
 478                 return;
 479
 480         hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
 481                        HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
 482         sta->flags |= WLAN_STA_AUTH;
 483         mlme_authenticate_indication(hapd, sta);
 484 }
 485 #endif /* CONFIG_IEEE80211R */
 486
 487
 488 static void handle_auth(struct hostapd_data *hapd, struct ieee80211_mgmt *mgmt,
 489                         size_t len)
 490 {
 491         u16 auth_alg, auth_transaction, status_code;
 492         u16 resp = WLAN_STATUS_SUCCESS;
 493         struct sta_info *sta = NULL;
 494         int res;
 495         u16 fc;
 496         u8 *challenge = NULL;
 497         u32 session_timeout, acct_interim_interval;
 498         int vlan_id = 0;
 499         u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
 500         size_t resp_ies_len = 0;
 501
 502         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
 503                 printf("handle_auth - too short payload (len=%lu)\n",
 504                        (unsigned long) len);
 505                 return;
 506         }
 507
 508         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
 509         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
 510         status_code = le_to_host16(mgmt->u.auth.status_code);
 511         fc = le_to_host16(mgmt->frame_control);
 512
 513         if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
 514             2 + WLAN_AUTH_CHALLENGE_LEN &&
 515             mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
 516             mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
 517                 challenge = &mgmt->u.auth.variable[2];
 518
 519         wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
 520                    "auth_transaction=%d status_code=%d wep=%d%s",
 521                    MAC2STR(mgmt->sa), auth_alg, auth_transaction,
 522                    status_code, !!(fc & WLAN_FC_ISWEP),
 523                    challenge ? " challenge" : "");
 524
 525         if (hapd->tkip_countermeasures) {
 526                 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
 527                 goto fail;
 528         }
 529
 530         if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
 531                auth_alg == WLAN_AUTH_OPEN) ||
 532 #ifdef CONFIG_IEEE80211R
 533               (hapd->conf->wpa &&
 534                (hapd->conf->wpa_key_mgmt &
 535                 (WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK)) &&
 536                auth_alg == WLAN_AUTH_FT) ||
 537 #endif /* CONFIG_IEEE80211R */
 538               ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
 539                auth_alg == WLAN_AUTH_SHARED_KEY))) {
 540                 printf("Unsupported authentication algorithm (%d)\n",
 541                        auth_alg);
 542                 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
 543                 goto fail;
 544         }
 545
 546         if (!(auth_transaction == 1 ||
 547               (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
 548                 printf("Unknown authentication transaction number (%d)\n",
 549                        auth_transaction);
 550                 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
 551                 goto fail;
 552         }
 553
 554         if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
 555                 printf("Station " MACSTR " not allowed to authenticate.\n",
 556                        MAC2STR(mgmt->sa));
 557                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 558                 goto fail;
 559         }
 560
 561         res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
 562                                       &session_timeout,
 563                                       &acct_interim_interval, &vlan_id);
 564         if (res == HOSTAPD_ACL_REJECT) {
 565                 printf("Station " MACSTR " not allowed to authenticate.\n",
 566                        MAC2STR(mgmt->sa));
 567                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 568                 goto fail;
 569         }
 570         if (res == HOSTAPD_ACL_PENDING) {
 571                 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
 572                            " waiting for an external authentication",
 573                            MAC2STR(mgmt->sa));
 574                 /* Authentication code will re-send the authentication frame
 575                  * after it has received (and cached) information from the
 576                  * external source. */
 577                 return;
 578         }
 579
 580         sta = ap_sta_add(hapd, mgmt->sa);
 581         if (!sta) {
 582                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 583                 goto fail;
 584         }
 585
 586         if (vlan_id > 0) {
 587                 if (hostapd_get_vlan_id_ifname(hapd->conf->vlan,
 588                                                sta->vlan_id) == NULL) {
 589                         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
 590                                        HOSTAPD_LEVEL_INFO, "Invalid VLAN ID "
 591                                        "%d received from RADIUS server",
 592                                        vlan_id);
 593                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 594                         goto fail;
 595                 }
 596                 sta->vlan_id = vlan_id;
 597                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
 598                                HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
 599         }
 600
 601         sta->flags &= ~WLAN_STA_PREAUTH;
 602         ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
 603
 604         if (hapd->conf->radius->acct_interim_interval == 0 &&
 605             acct_interim_interval)
 606                 sta->acct_interim_interval = acct_interim_interval;
 607         if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
 608                 ap_sta_session_timeout(hapd, sta, session_timeout);
 609         else
 610                 ap_sta_no_session_timeout(hapd, sta);
 611
 612         switch (auth_alg) {
 613         case WLAN_AUTH_OPEN:
 614                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 615                                HOSTAPD_LEVEL_DEBUG,
 616                                "authentication OK (open system)");
 617 #ifdef IEEE80211_REQUIRE_AUTH_ACK
 618                 /* Station will be marked authenticated if it ACKs the
 619                  * authentication reply. */
 620 #else
 621                 sta->flags |= WLAN_STA_AUTH;
 622                 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
 623                 sta->auth_alg = WLAN_AUTH_OPEN;
 624                 mlme_authenticate_indication(hapd, sta);
 625 #endif
 626                 break;
 627         case WLAN_AUTH_SHARED_KEY:
 628                 resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
 629                                        fc & WLAN_FC_ISWEP);
 630                 sta->auth_alg = WLAN_AUTH_SHARED_KEY;
 631                 mlme_authenticate_indication(hapd, sta);
 632                 if (sta->challenge && auth_transaction == 1) {
 633                         resp_ies[0] = WLAN_EID_CHALLENGE;
 634                         resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
 635                         os_memcpy(resp_ies + 2, sta->challenge,
 636                                   WLAN_AUTH_CHALLENGE_LEN);
 637                         resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
 638                 }
 639                 break;
 640 #ifdef CONFIG_IEEE80211R
 641         case WLAN_AUTH_FT:
 642                 sta->auth_alg = WLAN_AUTH_FT;
 643                 if (sta->wpa_sm == NULL)
 644                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
 645                                                         sta->addr);
 646                 if (sta->wpa_sm == NULL) {
 647                         wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
 648                                    "state machine");
 649                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 650                         goto fail;
 651                 }
 652                 wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
 653                                     auth_transaction, mgmt->u.auth.variable,
 654                                     len - IEEE80211_HDRLEN -
 655                                     sizeof(mgmt->u.auth),
 656                                     handle_auth_ft_finish, hapd);
 657                 /* handle_auth_ft_finish() callback will complete auth. */
 658                 return;
 659 #endif /* CONFIG_IEEE80211R */
 660         }
 661
 662  fail:
 663         send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
 664                         auth_transaction + 1, resp, resp_ies, resp_ies_len);
 665 }
 666
 667
 668 static int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta)
 669 {
 670         /* get a unique AID */
 671         if (sta->aid > 0) {
 672                 wpa_printf(MSG_DEBUG, "  old AID %d", sta->aid);
 673                 return 0;
 674         }
 675
 676         for (sta->aid = 1; sta->aid <= MAX_AID_TABLE_SIZE; sta->aid++)
 677                 if (hapd->sta_aid[sta->aid - 1] == NULL)
 678                         break;
 679         if (sta->aid > MAX_AID_TABLE_SIZE) {
 680                 sta->aid = 0;
 681                 return -1;
 682         }
 683
 684         hapd->sta_aid[sta->aid - 1] = sta;
 685         wpa_printf(MSG_DEBUG, "  new AID %d", sta->aid);
 686         return 0;
 687 }
 688
 689
 690 static void handle_assoc(struct hostapd_data *hapd,
 691                          struct ieee80211_mgmt *mgmt, size_t len, int reassoc)
 692 {
 693         u16 capab_info, listen_interval;
 694         u16 resp = WLAN_STATUS_SUCCESS;
 695         u8 *pos, *wpa_ie;
 696         size_t wpa_ie_len;
 697         int send_deauth = 0, send_len, left, i;
 698         struct sta_info *sta;
 699         struct ieee802_11_elems elems;
 700         u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
 701         struct ieee80211_mgmt *reply;
 702
 703         if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
 704                                       sizeof(mgmt->u.assoc_req))) {
 705                 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
 706                        "\n", reassoc, (unsigned long) len);
 707                 return;
 708         }
 709
 710         if (reassoc) {
 711                 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
 712                 listen_interval = le_to_host16(
 713                         mgmt->u.reassoc_req.listen_interval);
 714                 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
 715                            " capab_info=0x%02x listen_interval=%d current_ap="
 716                            MACSTR,
 717                            MAC2STR(mgmt->sa), capab_info, listen_interval,
 718                            MAC2STR(mgmt->u.reassoc_req.current_ap));
 719                 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
 720                 pos = mgmt->u.reassoc_req.variable;
 721         } else {
 722                 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
 723                 listen_interval = le_to_host16(
 724                         mgmt->u.assoc_req.listen_interval);
 725                 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
 726                            " capab_info=0x%02x listen_interval=%d",
 727                            MAC2STR(mgmt->sa), capab_info, listen_interval);
 728                 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
 729                 pos = mgmt->u.assoc_req.variable;
 730         }
 731
 732         sta = ap_get_sta(hapd, mgmt->sa);
 733 #ifdef CONFIG_IEEE80211R
 734         if (sta && sta->auth_alg == WLAN_AUTH_FT &&
 735             (sta->flags & WLAN_STA_AUTH) == 0) {
 736                 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
 737                            "prior to authentication since it is using "
 738                            "over-the-DS FT", MAC2STR(mgmt->sa));
 739         } else
 740 #endif /* CONFIG_IEEE80211R */
 741         if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
 742                 printf("STA " MACSTR " trying to associate before "
 743                        "authentication\n", MAC2STR(mgmt->sa));
 744                 if (sta) {
 745                         printf("  sta: addr=" MACSTR " aid=%d flags=0x%04x\n",
 746                                MAC2STR(sta->addr), sta->aid, sta->flags);
 747                 }
 748                 send_deauth = 1;
 749                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 750                 goto fail;
 751         }
 752
 753         if (hapd->tkip_countermeasures) {
 754                 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
 755                 goto fail;
 756         }
 757
 758         if (listen_interval > hapd->conf->max_listen_interval) {
 759                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
 760                                HOSTAPD_LEVEL_DEBUG,
 761                                "Too large Listen Interval (%d)",
 762                                listen_interval);
 763                 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
 764                 goto fail;
 765         }
 766
 767         sta->capability = capab_info;
 768         sta->listen_interval = listen_interval;
 769
 770         /* followed by SSID and Supported rates; and HT capabilities if 802.11n
 771          * is used */
 772         if (ieee802_11_parse_elems(pos, left, &elems, 1) == ParseFailed ||
 773             !elems.ssid) {
 774                 printf("STA " MACSTR " sent invalid association request\n",
 775                        MAC2STR(sta->addr));
 776                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 777                 goto fail;
 778         }
 779
 780         if (elems.ssid_len != hapd->conf->ssid.ssid_len ||
 781             os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) != 0)
 782         {
 783                 char ssid_txt[33];
 784                 ieee802_11_print_ssid(ssid_txt, elems.ssid, elems.ssid_len);
 785                 printf("Station " MACSTR " tried to associate with "
 786                        "unknown SSID '%s'\n", MAC2STR(sta->addr), ssid_txt);
 787                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 788                 goto fail;
 789         }
 790
 791         sta->flags &= ~WLAN_STA_WMM;
 792         if (elems.wmm && hapd->conf->wmm_enabled) {
 793                 if (hostapd_eid_wmm_valid(hapd, elems.wmm, elems.wmm_len))
 794                         hostapd_logger(hapd, sta->addr,
 795                                        HOSTAPD_MODULE_WPA,
 796                                        HOSTAPD_LEVEL_DEBUG,
 797                                        "invalid WMM element in association "
 798                                        "request");
 799                 else
 800                         sta->flags |= WLAN_STA_WMM;
 801         }
 802
 803         if (!elems.supp_rates) {
 804                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
 805                                HOSTAPD_LEVEL_DEBUG,
 806                                "No supported rates element in AssocReq");
 807                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 808                 goto fail;
 809         }
 810
 811         if (elems.supp_rates_len > sizeof(sta->supported_rates)) {
 812                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
 813                                HOSTAPD_LEVEL_DEBUG,
 814                                "Invalid supported rates element length %d",
 815                                elems.supp_rates_len);
 816                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 817                 goto fail;
 818         }
 819
 820         os_memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
 821         os_memcpy(sta->supported_rates, elems.supp_rates,
 822                   elems.supp_rates_len);
 823         sta->supported_rates_len = elems.supp_rates_len;
 824
 825         if (elems.ext_supp_rates) {
 826                 if (elems.supp_rates_len + elems.ext_supp_rates_len >
 827                     sizeof(sta->supported_rates)) {
 828                         hostapd_logger(hapd, mgmt->sa,
 829                                        HOSTAPD_MODULE_IEEE80211,
 830                                        HOSTAPD_LEVEL_DEBUG,
 831                                        "Invalid supported rates element length"
 832                                        " %d+%d", elems.supp_rates_len,
 833                                        elems.ext_supp_rates_len);
 834                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 835                         goto fail;
 836                 }
 837
 838                 os_memcpy(sta->supported_rates + elems.supp_rates_len,
 839                           elems.ext_supp_rates, elems.ext_supp_rates_len);
 840                 sta->supported_rates_len += elems.ext_supp_rates_len;
 841         }
 842
 843 #ifdef CONFIG_IEEE80211N
 844         /* save HT capabilities in the sta object */
 845         os_memset(&sta->ht_capabilities, 0, sizeof(sta->ht_capabilities));
 846         if (elems.ht_capabilities &&
 847             elems.ht_capabilities_len >=
 848             sizeof(struct ieee80211_ht_capability)) {
 849                 sta->flags |= WLAN_STA_HT;
 850                 sta->ht_capabilities.id = WLAN_EID_HT_CAP;
 851                 sta->ht_capabilities.length =
 852                         sizeof(struct ieee80211_ht_capability);
 853                 os_memcpy(&sta->ht_capabilities.data,
 854                           elems.ht_capabilities,
 855                           sizeof(struct ieee80211_ht_capability));
 856         } else
 857                 sta->flags &= ~WLAN_STA_HT;
 858 #endif /* CONFIG_IEEE80211N */
 859
 860         if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
 861                 wpa_ie = elems.rsn_ie;
 862                 wpa_ie_len = elems.rsn_ie_len;
 863         } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
 864                    elems.wpa_ie) {
 865                 wpa_ie = elems.wpa_ie;
 866                 wpa_ie_len = elems.wpa_ie_len;
 867         } else {
 868                 wpa_ie = NULL;
 869                 wpa_ie_len = 0;
 870         }
 871 #ifdef CONFIG_WPS
 872         sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS);
 873         if (hapd->conf->wps_state && wpa_ie == NULL) {
 874                 if (elems.wps_ie) {
 875                         wpa_printf(MSG_DEBUG, "STA included WPS IE in "
 876                                    "(Re)Association Request - assume WPS is "
 877                                    "used");
 878                         sta->flags |= WLAN_STA_WPS;
 879                         wpabuf_free(sta->wps_ie);
 880                         sta->wps_ie = wpabuf_alloc_copy(elems.wps_ie + 4,
 881                                                         elems.wps_ie_len - 4);
 882                 } else {
 883                         wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE "
 884                                    "in (Re)Association Request - possible WPS "
 885                                    "use");
 886                         sta->flags |= WLAN_STA_MAYBE_WPS;
 887                 }
 888         } else
 889 #endif /* CONFIG_WPS */
 890         if (hapd->conf->wpa && wpa_ie == NULL) {
 891                 printf("STA " MACSTR ": No WPA/RSN IE in association "
 892                        "request\n", MAC2STR(sta->addr));
 893                 resp = WLAN_STATUS_INVALID_IE;
 894                 goto fail;
 895         }
 896
 897         if (hapd->conf->wpa && wpa_ie) {
 898                 int res;
 899                 wpa_ie -= 2;
 900                 wpa_ie_len += 2;
 901                 if (sta->wpa_sm == NULL)
 902                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
 903                                                         sta->addr);
 904                 if (sta->wpa_sm == NULL) {
 905                         printf("Failed to initialize WPA state machine\n");
 906                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 907                         goto fail;
 908                 }
 909                 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
 910                                           wpa_ie, wpa_ie_len,
 911                                           elems.mdie, elems.mdie_len);
 912                 if (res == WPA_INVALID_GROUP)
 913                         resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
 914                 else if (res == WPA_INVALID_PAIRWISE)
 915                         resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
 916                 else if (res == WPA_INVALID_AKMP)
 917                         resp = WLAN_STATUS_AKMP_NOT_VALID;
 918                 else if (res == WPA_ALLOC_FAIL)
 919                         resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 920 #ifdef CONFIG_IEEE80211W
 921                 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
 922                         resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
 923                 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
 924                         resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
 925 #endif /* CONFIG_IEEE80211W */
 926                 else if (res == WPA_INVALID_MDIE)
 927                         resp = WLAN_STATUS_INVALID_MDIE;
 928                 else if (res != WPA_IE_OK)
 929                         resp = WLAN_STATUS_INVALID_IE;
 930                 if (resp != WLAN_STATUS_SUCCESS)
 931                         goto fail;
 932 #ifdef CONFIG_IEEE80211W
 933                 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
 934                     sta->sa_query_count > 0)
 935                         ap_check_sa_query_timeout(hapd, sta);
 936                 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
 937                     (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) {
 938                         /*
 939                          * STA has already been associated with MFP and SA
 940                          * Query timeout has not been reached. Reject the
 941                          * association attempt temporarily and start SA Query,
 942                          * if one is not pending.
 943                          */
 944
 945                         if (sta->sa_query_count == 0)
 946                                 ap_sta_start_sa_query(hapd, sta);
 947
 948                         resp = WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
 949                         goto fail;
 950                 }
 951
 952                 if (wpa_auth_uses_mfp(sta->wpa_sm))
 953                         sta->flags |= WLAN_STA_MFP;
 954                 else
 955                         sta->flags &= ~WLAN_STA_MFP;
 956 #endif /* CONFIG_IEEE80211W */
 957
 958 #ifdef CONFIG_IEEE80211R
 959                 if (sta->auth_alg == WLAN_AUTH_FT) {
 960                         if (!reassoc) {
 961                                 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
 962                                            "to use association (not "
 963                                            "re-association) with FT auth_alg",
 964                                            MAC2STR(sta->addr));
 965                                 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
 966                                 goto fail;
 967                         }
 968
 969                         resp = wpa_ft_validate_reassoc(sta->wpa_sm, pos, left);
 970                         if (resp != WLAN_STATUS_SUCCESS)
 971                                 goto fail;
 972                 }
 973 #endif /* CONFIG_IEEE80211R */
 974 #ifdef CONFIG_IEEE80211N
 975                 if ((sta->flags & WLAN_STA_HT) &&
 976                     wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
 977                         wpa_printf(MSG_DEBUG, "HT: " MACSTR " tried to "
 978                                    "use TKIP with HT association",
 979                                    MAC2STR(sta->addr));
 980                         resp = WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
 981                         goto fail;
 982                 }
 983 #endif /* CONFIG_IEEE80211N */
 984         } else
 985                 wpa_auth_sta_no_wpa(sta->wpa_sm);
 986
 987         if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
 988                 sta->flags |= WLAN_STA_NONERP;
 989         for (i = 0; i < sta->supported_rates_len; i++) {
 990                 if ((sta->supported_rates[i] & 0x7f) > 22) {
 991                         sta->flags &= ~WLAN_STA_NONERP;
 992                         break;
 993                 }
 994         }
 995         if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
 996                 sta->nonerp_set = 1;
 997                 hapd->iface->num_sta_non_erp++;
 998                 if (hapd->iface->num_sta_non_erp == 1)
 999                         ieee802_11_set_beacons(hapd->iface);
1000         }
1001
1002         if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
1003             !sta->no_short_slot_time_set) {
1004                 sta->no_short_slot_time_set = 1;
1005                 hapd->iface->num_sta_no_short_slot_time++;
1006                 if (hapd->iface->current_mode->mode ==
1007                     HOSTAPD_MODE_IEEE80211G &&
1008                     hapd->iface->num_sta_no_short_slot_time == 1)
1009                         ieee802_11_set_beacons(hapd->iface);
1010         }
1011
1012         if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1013                 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
1014         else
1015                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
1016
1017         if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
1018             !sta->no_short_preamble_set) {
1019                 sta->no_short_preamble_set = 1;
1020                 hapd->iface->num_sta_no_short_preamble++;
1021                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
1022                     && hapd->iface->num_sta_no_short_preamble == 1)
1023                         ieee802_11_set_beacons(hapd->iface);
1024         }
1025
1026 #ifdef CONFIG_IEEE80211N
1027         if (sta->flags & WLAN_STA_HT) {
1028                 u16 ht_capab = le_to_host16(
1029                         sta->ht_capabilities.data.capabilities_info);
1030                 wpa_printf(MSG_DEBUG, "HT: STA " MACSTR " HT Capabilities "
1031                            "Info: 0x%04x", MAC2STR(sta->addr), ht_capab);
1032                 if ((ht_capab & HT_CAP_INFO_GREEN_FIELD) == 0) {
1033                         if (!sta->no_ht_gf_set) {
1034                                 sta->no_ht_gf_set = 1;
1035                                 hapd->iface->num_sta_ht_no_gf++;
1036                         }
1037                         wpa_printf(MSG_DEBUG, "%s STA " MACSTR " - no "
1038                                    "greenfield, num of non-gf stations %d",
1039                                    __func__, MAC2STR(sta->addr),
1040                                    hapd->iface->num_sta_ht_no_gf);
1041                 }
1042                 if ((ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) == 0) {
1043                         if (!sta->ht_20mhz_set) {
1044                                 sta->ht_20mhz_set = 1;
1045                                 hapd->iface->num_sta_ht_20mhz++;
1046                         }
1047                         wpa_printf(MSG_DEBUG, "%s STA " MACSTR " - 20 MHz HT, "
1048                                    "num of 20MHz HT STAs %d",
1049                                    __func__, MAC2STR(sta->addr),
1050                                    hapd->iface->num_sta_ht_20mhz);
1051                 }
1052         } else {
1053                 if (!sta->no_ht_set) {
1054                         sta->no_ht_set = 1;
1055                         hapd->iface->num_sta_no_ht++;
1056                 }
1057                 if (hapd->iconf->ieee80211n) {
1058                         wpa_printf(MSG_DEBUG, "%s STA " MACSTR
1059                                    " - no HT, num of non-HT stations %d",
1060                                    __func__, MAC2STR(sta->addr),
1061                                    hapd->iface->num_sta_no_ht);
1062                 }
1063         }
1064
1065         if (hostapd_ht_operation_update(hapd->iface) > 0)
1066                 ieee802_11_set_beacons(hapd->iface);
1067 #endif /* CONFIG_IEEE80211N */
1068
1069         if (hostapd_get_aid(hapd, sta) < 0) {
1070                 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
1071                 wpa_printf(MSG_ERROR, "  no room for more AIDs");
1072                 goto fail;
1073         }
1074
1075         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1076                        HOSTAPD_LEVEL_DEBUG,
1077                        "association OK (aid %d)", sta->aid);
1078         /* Station will be marked associated, after it acknowledges AssocResp
1079          */
1080
1081 #ifdef CONFIG_IEEE80211W
1082         if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) {
1083                 wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out "
1084                            "SA Query procedure", reassoc ? "re" : "");
1085                 /* TODO: Send a protected Disassociate frame to the STA using
1086                  * the old key and Reason Code "Previous Authentication no
1087                  * longer valid". Make sure this is only sent protected since
1088                  * unprotected frame would be received by the STA that is now
1089                  * trying to associate.
1090                  */
1091         }
1092 #endif /* CONFIG_IEEE80211W */
1093
1094         if (reassoc) {
1095                 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
1096                           ETH_ALEN);
1097         }
1098
1099         if (sta->last_assoc_req)
1100                 os_free(sta->last_assoc_req);
1101         sta->last_assoc_req = os_malloc(len);
1102         if (sta->last_assoc_req)
1103                 os_memcpy(sta->last_assoc_req, mgmt, len);
1104
1105         /* Make sure that the previously registered inactivity timer will not
1106          * remove the STA immediately. */
1107         sta->timeout_next = STA_NULLFUNC;
1108
1109  fail:
1110         os_memset(buf, 0, sizeof(buf));
1111         reply = (struct ieee80211_mgmt *) buf;
1112         reply->frame_control =
1113                 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1114                              (send_deauth ? WLAN_FC_STYPE_DEAUTH :
1115                               (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
1116                                WLAN_FC_STYPE_ASSOC_RESP)));
1117         os_memcpy(reply->da, mgmt->sa, ETH_ALEN);
1118         os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
1119         os_memcpy(reply->bssid, mgmt->bssid, ETH_ALEN);
1120
1121         send_len = IEEE80211_HDRLEN;
1122         if (send_deauth) {
1123                 send_len += sizeof(reply->u.deauth);
1124                 reply->u.deauth.reason_code = host_to_le16(resp);
1125         } else {
1126                 u8 *p;
1127                 send_len += sizeof(reply->u.assoc_resp);
1128                 reply->u.assoc_resp.capab_info =
1129                         host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
1130                 reply->u.assoc_resp.status_code = host_to_le16(resp);
1131                 reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
1132                                                        | BIT(14) | BIT(15));
1133                 /* Supported rates */
1134                 p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
1135                 /* Extended supported rates */
1136                 p = hostapd_eid_ext_supp_rates(hapd, p);
1137                 if (sta->flags & WLAN_STA_WMM)
1138                         p = hostapd_eid_wmm(hapd, p);
1139
1140                 p = hostapd_eid_ht_capabilities_info(hapd, p);
1141                 p = hostapd_eid_ht_operation(hapd, p);
1142
1143 #ifdef CONFIG_IEEE80211R
1144                 if (resp == WLAN_STATUS_SUCCESS) {
1145                         /* IEEE 802.11r: Mobility Domain Information, Fast BSS
1146                          * Transition Information, RSN, [RIC Response] */
1147                         p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
1148                                                         buf + sizeof(buf) - p,
1149                                                         sta->auth_alg,
1150                                                         pos, left);
1151                 }
1152 #endif /* CONFIG_IEEE80211R */
1153
1154 #ifdef CONFIG_IEEE80211W
1155                 if (resp == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
1156                         p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
1157 #endif /* CONFIG_IEEE80211W */
1158
1159                 send_len += p - reply->u.assoc_resp.variable;
1160         }
1161
1162         if (hostapd_send_mgmt_frame(hapd, reply, send_len, 0) < 0)
1163                 perror("handle_assoc: send");
1164 }
1165
1166
1167 static void handle_disassoc(struct hostapd_data *hapd,
1168                             struct ieee80211_mgmt *mgmt, size_t len)
1169 {
1170         struct sta_info *sta;
1171
1172         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
1173                 printf("handle_disassoc - too short payload (len=%lu)\n",
1174                        (unsigned long) len);
1175                 return;
1176         }
1177
1178         wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
1179                    MAC2STR(mgmt->sa),
1180                    le_to_host16(mgmt->u.disassoc.reason_code));
1181
1182         sta = ap_get_sta(hapd, mgmt->sa);
1183         if (sta == NULL) {
1184                 printf("Station " MACSTR " trying to disassociate, but it "
1185                        "is not associated.\n", MAC2STR(mgmt->sa));
1186                 return;
1187         }
1188
1189         sta->flags &= ~WLAN_STA_ASSOC;
1190         wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
1191         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1192                        HOSTAPD_LEVEL_INFO, "disassociated");
1193         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1194         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1195         /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
1196          * authenticated. */
1197         accounting_sta_stop(hapd, sta);
1198         ieee802_1x_free_station(sta);
1199         hostapd_sta_remove(hapd, sta->addr);
1200
1201         if (sta->timeout_next == STA_NULLFUNC ||
1202             sta->timeout_next == STA_DISASSOC) {
1203                 sta->timeout_next = STA_DEAUTH;
1204                 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1205                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
1206                                        hapd, sta);
1207         }
1208
1209         mlme_disassociate_indication(
1210                 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
1211 }
1212
1213
1214 static void handle_deauth(struct hostapd_data *hapd,
1215                           struct ieee80211_mgmt *mgmt, size_t len)
1216 {
1217         struct sta_info *sta;
1218
1219         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
1220                 printf("handle_deauth - too short payload (len=%lu)\n",
1221                        (unsigned long) len);
1222                 return;
1223         }
1224
1225         wpa_printf(MSG_DEBUG, "deauthentication: STA=" MACSTR
1226                    " reason_code=%d",
1227                    MAC2STR(mgmt->sa),
1228                    le_to_host16(mgmt->u.deauth.reason_code));
1229
1230         sta = ap_get_sta(hapd, mgmt->sa);
1231         if (sta == NULL) {
1232                 printf("Station " MACSTR " trying to deauthenticate, but it "
1233                        "is not authenticated.\n", MAC2STR(mgmt->sa));
1234                 return;
1235         }
1236
1237         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
1238         wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1239         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1240                        HOSTAPD_LEVEL_DEBUG, "deauthenticated");
1241         mlme_deauthenticate_indication(
1242                 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
1243         sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1244         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1245         ap_free_sta(hapd, sta);
1246 }
1247
1248
1249 static void handle_beacon(struct hostapd_data *hapd,
1250                           struct ieee80211_mgmt *mgmt, size_t len,
1251                           struct hostapd_frame_info *fi)
1252 {
1253         struct ieee802_11_elems elems;
1254
1255         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
1256                 printf("handle_beacon - too short payload (len=%lu)\n",
1257                        (unsigned long) len);
1258                 return;
1259         }
1260
1261         (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
1262                                       len - (IEEE80211_HDRLEN +
1263                                              sizeof(mgmt->u.beacon)), &elems,
1264                                       0);
1265
1266         ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
1267 }
1268
1269
1270 #ifdef CONFIG_IEEE80211W
1271
1272 /* MLME-SAQuery.request */
1273 void ieee802_11_send_sa_query_req(struct hostapd_data *hapd,
1274                                   const u8 *addr, const u8 *trans_id)
1275 {
1276         struct ieee80211_mgmt mgmt;
1277         u8 *end;
1278
1279         os_memset(&mgmt, 0, sizeof(mgmt));
1280         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1281                                           WLAN_FC_STYPE_ACTION);
1282         os_memcpy(mgmt.da, addr, ETH_ALEN);
1283         os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
1284         os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
1285         mgmt.u.action.category = WLAN_ACTION_SA_QUERY;
1286         mgmt.u.action.u.sa_query_req.action = WLAN_SA_QUERY_REQUEST;
1287         os_memcpy(mgmt.u.action.u.sa_query_req.trans_id, trans_id,
1288                   WLAN_SA_QUERY_TR_ID_LEN);
1289         end = mgmt.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN;
1290         if (hostapd_send_mgmt_frame(hapd, &mgmt, end - (u8 *) &mgmt, 0) < 0)
1291                 perror("ieee802_11_send_sa_query_req: send");
1292 }
1293
1294
1295 static void hostapd_sa_query_action(struct hostapd_data *hapd,
1296                                     struct ieee80211_mgmt *mgmt, size_t len)
1297 {
1298         struct sta_info *sta;
1299         u8 *end;
1300         int i;
1301
1302         end = mgmt->u.action.u.sa_query_resp.trans_id +
1303                 WLAN_SA_QUERY_TR_ID_LEN;
1304         if (((u8 *) mgmt) + len < end) {
1305                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action "
1306                            "frame (len=%lu)", (unsigned long) len);
1307                 return;
1308         }
1309
1310         if (mgmt->u.action.u.sa_query_resp.action != WLAN_SA_QUERY_RESPONSE) {
1311                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Unexpected SA Query "
1312                            "Action %d", mgmt->u.action.u.sa_query_resp.action);
1313                 return;
1314         }
1315
1316         /* MLME-SAQuery.confirm */
1317
1318         sta = ap_get_sta(hapd, mgmt->sa);
1319         if (sta == NULL || sta->sa_query_trans_id == NULL) {
1320                 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching STA with "
1321                            "pending SA Query request found");
1322                 return;
1323         }
1324
1325         for (i = 0; i < sta->sa_query_count; i++) {
1326                 if (os_memcmp(sta->sa_query_trans_id +
1327                               i * WLAN_SA_QUERY_TR_ID_LEN,
1328                               mgmt->u.action.u.sa_query_resp.trans_id,
1329                               WLAN_SA_QUERY_TR_ID_LEN) == 0)
1330                         break;
1331         }
1332
1333         if (i >= sta->sa_query_count) {
1334                 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching SA Query "
1335                            "transaction identifier found");
1336                 return;
1337         }
1338
1339         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1340                        HOSTAPD_LEVEL_DEBUG,
1341                        "Reply to pending SA Query received");
1342         ap_sta_stop_sa_query(hapd, sta);
1343 }
1344 #endif /* CONFIG_IEEE80211W */
1345
1346
1347 static void handle_action(struct hostapd_data *hapd,
1348                           struct ieee80211_mgmt *mgmt, size_t len)
1349 {
1350         if (len < IEEE80211_HDRLEN + 1) {
1351                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1352                                HOSTAPD_LEVEL_DEBUG,
1353                                "handle_action - too short payload (len=%lu)",
1354                                (unsigned long) len);
1355                 return;
1356         }
1357
1358         switch (mgmt->u.action.category) {
1359 #ifdef CONFIG_IEEE80211R
1360         case WLAN_ACTION_FT:
1361         {
1362                 struct sta_info *sta;
1363
1364                 sta = ap_get_sta(hapd, mgmt->sa);
1365                 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
1366                         wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored FT Action "
1367                                    "frame from unassociated STA " MACSTR,
1368                                    MAC2STR(mgmt->sa));
1369                         return;
1370                 }
1371
1372                 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
1373                                      len - IEEE80211_HDRLEN))
1374                         break;
1375
1376                 return;
1377         }
1378 #endif /* CONFIG_IEEE80211R */
1379         case WLAN_ACTION_WMM:
1380                 hostapd_wmm_action(hapd, mgmt, len);
1381                 return;
1382 #ifdef CONFIG_IEEE80211W
1383         case WLAN_ACTION_SA_QUERY:
1384                 hostapd_sa_query_action(hapd, mgmt, len);
1385                 return;
1386 #endif /* CONFIG_IEEE80211W */
1387         }
1388
1389         hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1390                        HOSTAPD_LEVEL_DEBUG,
1391                        "handle_action - unknown action category %d or invalid "
1392                        "frame",
1393                        mgmt->u.action.category);
1394         if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
1395             !(mgmt->sa[0] & 0x01)) {
1396                 /*
1397                  * IEEE 802.11-REVma/D9.0 - 7.3.1.11
1398                  * Return the Action frame to the source without change
1399                  * except that MSB of the Category set to 1.
1400                  */
1401                 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
1402                            "frame back to sender");
1403                 os_memcpy(mgmt->da, mgmt->sa, ETH_ALEN);
1404                 os_memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
1405                 os_memcpy(mgmt->bssid, hapd->own_addr, ETH_ALEN);
1406                 mgmt->u.action.category |= 0x80;
1407
1408                 hostapd_send_mgmt_frame(hapd, mgmt, len, 0);
1409         }
1410 }
1411
1412
1413 /**
1414  * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
1415  * @hapd: hostapd BSS data structure (the BSS to which the management frame was
1416  * sent to)
1417  * @buf: management frame data (starting from IEEE 802.11 header)
1418  * @len: length of frame data in octets
1419  * @stype: management frame subtype from frame control field
1420  * @fi: meta data about received frame (signal level, etc.)
1421  *
1422  * Process all incoming IEEE 802.11 management frames. This will be called for
1423  * each frame received from the kernel driver through wlan#ap interface. In
1424  * addition, it can be called to re-inserted pending frames (e.g., when using
1425  * external RADIUS server as an MAC ACL).
1426  */
1427 void ieee802_11_mgmt(struct hostapd_data *hapd, u8 *buf, size_t len, u16 stype,
1428                      struct hostapd_frame_info *fi)
1429 {
1430         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
1431         int broadcast;
1432
1433         if (stype == WLAN_FC_STYPE_BEACON) {
1434                 handle_beacon(hapd, mgmt, len, fi);
1435                 return;
1436         }
1437
1438         if (fi && fi->passive_scan)
1439                 return;
1440
1441         broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
1442                 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
1443                 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
1444
1445         if (!broadcast &&
1446             os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
1447                 printf("MGMT: BSSID=" MACSTR " not our address\n",
1448                        MAC2STR(mgmt->bssid));
1449                 return;
1450         }
1451
1452
1453         if (stype == WLAN_FC_STYPE_PROBE_REQ) {
1454                 handle_probe_req(hapd, mgmt, len);
1455                 return;
1456         }
1457
1458         if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
1459                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1460                                HOSTAPD_LEVEL_DEBUG,
1461                                "MGMT: DA=" MACSTR " not our address",
1462                                MAC2STR(mgmt->da));
1463                 return;
1464         }
1465
1466         switch (stype) {
1467         case WLAN_FC_STYPE_AUTH:
1468                 wpa_printf(MSG_DEBUG, "mgmt::auth");
1469                 handle_auth(hapd, mgmt, len);
1470                 break;
1471         case WLAN_FC_STYPE_ASSOC_REQ:
1472                 wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
1473                 handle_assoc(hapd, mgmt, len, 0);
1474                 break;
1475         case WLAN_FC_STYPE_REASSOC_REQ:
1476                 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
1477                 handle_assoc(hapd, mgmt, len, 1);
1478                 break;
1479         case WLAN_FC_STYPE_DISASSOC:
1480                 wpa_printf(MSG_DEBUG, "mgmt::disassoc");
1481                 handle_disassoc(hapd, mgmt, len);
1482                 break;
1483         case WLAN_FC_STYPE_DEAUTH:
1484                 wpa_printf(MSG_DEBUG, "mgmt::deauth");
1485                 handle_deauth(hapd, mgmt, len);
1486                 break;
1487         case WLAN_FC_STYPE_ACTION:
1488                 wpa_printf(MSG_DEBUG, "mgmt::action");
1489                 handle_action(hapd, mgmt, len);
1490                 break;
1491         default:
1492                 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1493                                HOSTAPD_LEVEL_DEBUG,
1494                                "unknown mgmt frame subtype %d", stype);
1495                 break;
1496         }
1497 }
1498
1499
1500 static void handle_auth_cb(struct hostapd_data *hapd,
1501                            struct ieee80211_mgmt *mgmt,
1502                            size_t len, int ok)
1503 {
1504         u16 auth_alg, auth_transaction, status_code;
1505         struct sta_info *sta;
1506
1507         if (!ok) {
1508                 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1509                                HOSTAPD_LEVEL_NOTICE,
1510                                "did not acknowledge authentication response");
1511                 return;
1512         }
1513
1514         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
1515                 printf("handle_auth_cb - too short payload (len=%lu)\n",
1516                        (unsigned long) len);
1517                 return;
1518         }
1519
1520         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1521         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1522         status_code = le_to_host16(mgmt->u.auth.status_code);
1523
1524         sta = ap_get_sta(hapd, mgmt->da);
1525         if (!sta) {
1526                 printf("handle_auth_cb: STA " MACSTR " not found\n",
1527                        MAC2STR(mgmt->da));
1528                 return;
1529         }
1530
1531         if (status_code == WLAN_STATUS_SUCCESS &&
1532             ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
1533              (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
1534                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1535                                HOSTAPD_LEVEL_INFO, "authenticated");
1536                 sta->flags |= WLAN_STA_AUTH;
1537         }
1538 }
1539
1540
1541 #ifdef CONFIG_IEEE80211N
1542 static void
1543 hostapd_get_ht_capab(struct hostapd_data *hapd,
1544                      struct ht_cap_ie *ht_cap_ie,
1545                      struct ht_cap_ie *neg_ht_cap_ie)
1546 {
1547
1548         os_memcpy(neg_ht_cap_ie, ht_cap_ie, sizeof(struct ht_cap_ie));
1549         neg_ht_cap_ie->data.capabilities_info =
1550                 ht_cap_ie->data.capabilities_info & hapd->iconf->ht_capab;
1551
1552         neg_ht_cap_ie->data.capabilities_info &= ~HT_CAP_INFO_SMPS_DISABLED;
1553         if ((ht_cap_ie->data.capabilities_info & HT_CAP_INFO_SMPS_DISABLED) ==
1554             (hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_DISABLED))
1555                 neg_ht_cap_ie->data.capabilities_info |=
1556                         hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_DISABLED;
1557         else
1558                 neg_ht_cap_ie->data.capabilities_info |=
1559                         HT_CAP_INFO_SMPS_DISABLED;
1560
1561         /* FIXME: Rx STBC needs to be handled specially */
1562         neg_ht_cap_ie->data.capabilities_info &= ~HT_CAP_INFO_RX_STBC_MASK;
1563         neg_ht_cap_ie->data.capabilities_info |=
1564                 hapd->iconf->ht_capab & HT_CAP_INFO_RX_STBC_MASK;
1565 }
1566 #endif /* CONFIG_IEEE80211N */
1567
1568
1569 static void handle_assoc_cb(struct hostapd_data *hapd,
1570                             struct ieee80211_mgmt *mgmt,
1571                             size_t len, int reassoc, int ok)
1572 {
1573         u16 status;
1574         struct sta_info *sta;
1575         int new_assoc = 1;
1576 #ifdef CONFIG_IEEE80211N
1577         struct ht_cap_ie ht_cap;
1578 #endif /* CONFIG_IEEE80211N */
1579         struct ht_cap_ie *ht_cap_ptr = NULL;
1580
1581         if (!ok) {
1582                 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1583                                HOSTAPD_LEVEL_DEBUG,
1584                                "did not acknowledge association response");
1585                 return;
1586         }
1587
1588         if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
1589                                       sizeof(mgmt->u.assoc_resp))) {
1590                 printf("handle_assoc_cb(reassoc=%d) - too short payload "
1591                        "(len=%lu)\n", reassoc, (unsigned long) len);
1592                 return;
1593         }
1594
1595         if (reassoc)
1596                 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
1597         else
1598                 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1599
1600         sta = ap_get_sta(hapd, mgmt->da);
1601         if (!sta) {
1602                 printf("handle_assoc_cb: STA " MACSTR " not found\n",
1603                        MAC2STR(mgmt->da));
1604                 return;
1605         }
1606
1607         if (status != WLAN_STATUS_SUCCESS)
1608                 goto fail;
1609
1610         /* Stop previous accounting session, if one is started, and allocate
1611          * new session id for the new session. */
1612         accounting_sta_stop(hapd, sta);
1613
1614         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1615                        HOSTAPD_LEVEL_INFO,
1616                        "associated (aid %d)",
1617                        sta->aid);
1618
1619         if (sta->flags & WLAN_STA_ASSOC)
1620                 new_assoc = 0;
1621         sta->flags |= WLAN_STA_ASSOC;
1622
1623         if (reassoc)
1624                 mlme_reassociate_indication(hapd, sta);
1625         else
1626                 mlme_associate_indication(hapd, sta);
1627
1628 #ifdef CONFIG_IEEE80211N
1629         if (sta->flags & WLAN_STA_HT) {
1630                 ht_cap_ptr = &ht_cap;
1631                 hostapd_get_ht_capab(hapd, &sta->ht_capabilities, ht_cap_ptr);
1632         }
1633 #endif /* CONFIG_IEEE80211N */
1634
1635 #ifdef CONFIG_IEEE80211W
1636         sta->sa_query_timed_out = 0;
1637 #endif /* CONFIG_IEEE80211W */
1638
1639         if (hostapd_sta_add(hapd->conf->iface, hapd, sta->addr, sta->aid,
1640                             sta->capability, sta->supported_rates,
1641                             sta->supported_rates_len, 0, sta->listen_interval,
1642                             ht_cap_ptr))
1643         {
1644                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1645                                HOSTAPD_LEVEL_NOTICE,
1646                                "Could not add STA to kernel driver");
1647         }
1648
1649         if (sta->eapol_sm == NULL) {
1650                 /*
1651                  * This STA does not use RADIUS server for EAP authentication,
1652                  * so bind it to the selected VLAN interface now, since the
1653                  * interface selection is not going to change anymore.
1654                  */
1655                 ap_sta_bind_vlan(hapd, sta, 0);
1656         } else if (sta->vlan_id) {
1657                 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
1658                 ap_sta_bind_vlan(hapd, sta, 0);
1659         }
1660         if (sta->flags & WLAN_STA_SHORT_PREAMBLE) {
1661                 hostapd_sta_set_flags(hapd, sta->addr, sta->flags,
1662                                       WLAN_STA_SHORT_PREAMBLE, ~0);
1663         } else {
1664                 hostapd_sta_set_flags(hapd, sta->addr, sta->flags,
1665                                       0, ~WLAN_STA_SHORT_PREAMBLE);
1666         }
1667
1668         if (sta->auth_alg == WLAN_AUTH_FT)
1669                 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
1670         else
1671                 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
1672         hostapd_new_assoc_sta(hapd, sta, !new_assoc);
1673
1674         ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
1675
1676  fail:
1677         /* Copy of the association request is not needed anymore */
1678         if (sta->last_assoc_req) {
1679                 os_free(sta->last_assoc_req);
1680                 sta->last_assoc_req = NULL;
1681         }
1682 }
1683
1684
1685 /**
1686  * ieee802_11_mgmt_cb - Process management frame TX status callback
1687  * @hapd: hostapd BSS data structure (the BSS from which the management frame
1688  * was sent from)
1689  * @buf: management frame data (starting from IEEE 802.11 header)
1690  * @len: length of frame data in octets
1691  * @stype: management frame subtype from frame control field
1692  * @ok: Whether the frame was ACK'ed
1693  */
1694 void ieee802_11_mgmt_cb(struct hostapd_data *hapd, u8 *buf, size_t len,
1695                         u16 stype, int ok)
1696 {
1697         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
1698
1699         switch (stype) {
1700         case WLAN_FC_STYPE_AUTH:
1701                 wpa_printf(MSG_DEBUG, "mgmt::auth cb");
1702                 handle_auth_cb(hapd, mgmt, len, ok);
1703                 break;
1704         case WLAN_FC_STYPE_ASSOC_RESP:
1705                 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
1706                 handle_assoc_cb(hapd, mgmt, len, 0, ok);
1707                 break;
1708         case WLAN_FC_STYPE_REASSOC_RESP:
1709                 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
1710                 handle_assoc_cb(hapd, mgmt, len, 1, ok);
1711                 break;
1712         case WLAN_FC_STYPE_PROBE_RESP:
1713                 wpa_printf(MSG_DEBUG, "mgmt::proberesp cb");
1714                 break;
1715         case WLAN_FC_STYPE_DEAUTH:
1716                 /* ignore */
1717                 break;
1718         case WLAN_FC_STYPE_ACTION:
1719                 wpa_printf(MSG_DEBUG, "mgmt::action cb");
1720                 break;
1721         default:
1722                 printf("unknown mgmt cb frame subtype %d\n", stype);
1723                 break;
1724         }
1725 }
1726
1727
1728 int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
1729 {
1730         /* TODO */
1731         return 0;
1732 }
1733
1734
1735 int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
1736                            char *buf, size_t buflen)
1737 {
1738         /* TODO */
1739         return 0;
1740 }
1741
1742 #endif /* CONFIG_NATIVE_WINDOWS */