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