src/ap/ieee802_1x.c

   1 /*
   2  * hostapd / IEEE 802.1X-2004 Authenticator
   3  * Copyright (c) 2002-2012, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10
  11 #include "utils/common.h"
  12 #include "utils/eloop.h"
  13 #include "crypto/md5.h"
  14 #include "crypto/crypto.h"
  15 #include "crypto/random.h"
  16 #include "common/ieee802_11_defs.h"
  17 #include "radius/radius.h"
  18 #include "radius/radius_client.h"
  19 #include "eap_server/eap.h"
  20 #include "eap_common/eap_wsc_common.h"
  21 #include "eapol_auth/eapol_auth_sm.h"
  22 #include "eapol_auth/eapol_auth_sm_i.h"
  23 #include "p2p/p2p.h"
  24 #include "hostapd.h"
  25 #include "accounting.h"
  26 #include "sta_info.h"
  27 #include "wpa_auth.h"
  28 #include "preauth_auth.h"
  29 #include "pmksa_cache_auth.h"
  30 #include "ap_config.h"
  31 #include "ap_drv_ops.h"
  32 #include "ieee802_1x.h"
  33
  34
  35 static void ieee802_1x_finished(struct hostapd_data *hapd,
  36                                 struct sta_info *sta, int success);
  37
  38
  39 static void ieee802_1x_send(struct hostapd_data *hapd, struct sta_info *sta,
  40                             u8 type, const u8 *data, size_t datalen)
  41 {
  42         u8 *buf;
  43         struct ieee802_1x_hdr *xhdr;
  44         size_t len;
  45         int encrypt = 0;
  46
  47         len = sizeof(*xhdr) + datalen;
  48         buf = os_zalloc(len);
  49         if (buf == NULL) {
  50                 wpa_printf(MSG_ERROR, "malloc() failed for "
  51                            "ieee802_1x_send(len=%lu)",
  52                            (unsigned long) len);
  53                 return;
  54         }
  55
  56         xhdr = (struct ieee802_1x_hdr *) buf;
  57         xhdr->version = hapd->conf->eapol_version;
  58         xhdr->type = type;
  59         xhdr->length = host_to_be16(datalen);
  60
  61         if (datalen > 0 && data != NULL)
  62                 os_memcpy(xhdr + 1, data, datalen);
  63
  64         if (wpa_auth_pairwise_set(sta->wpa_sm))
  65                 encrypt = 1;
  66         if (sta->flags & WLAN_STA_PREAUTH) {
  67                 rsn_preauth_send(hapd, sta, buf, len);
  68         } else {
  69                 hostapd_drv_hapd_send_eapol(hapd, sta->addr, buf, len,
  70                                             encrypt, sta->flags);
  71         }
  72
  73         os_free(buf);
  74 }
  75
  76
  77 void ieee802_1x_set_sta_authorized(struct hostapd_data *hapd,
  78                                    struct sta_info *sta, int authorized)
  79 {
  80         int res;
  81
  82         if (sta->flags & WLAN_STA_PREAUTH)
  83                 return;
  84
  85         if (authorized) {
  86                 ap_sta_set_authorized(hapd, sta, 1);
  87                 res = hostapd_set_authorized(hapd, sta, 1);
  88                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
  89                                HOSTAPD_LEVEL_DEBUG, "authorizing port");
  90         } else {
  91                 ap_sta_set_authorized(hapd, sta, 0);
  92                 res = hostapd_set_authorized(hapd, sta, 0);
  93                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
  94                                HOSTAPD_LEVEL_DEBUG, "unauthorizing port");
  95         }
  96
  97         if (res && errno != ENOENT) {
  98                 printf("Could not set station " MACSTR " flags for kernel "
  99                        "driver (errno=%d).\n", MAC2STR(sta->addr), errno);
 100         }
 101
 102         if (authorized) {
 103                 os_get_time(&sta->connected_time);
 104                 accounting_sta_start(hapd, sta);
 105         }
 106 }
 107
 108
 109 static void ieee802_1x_tx_key_one(struct hostapd_data *hapd,
 110                                   struct sta_info *sta,
 111                                   int idx, int broadcast,
 112                                   u8 *key_data, size_t key_len)
 113 {
 114         u8 *buf, *ekey;
 115         struct ieee802_1x_hdr *hdr;
 116         struct ieee802_1x_eapol_key *key;
 117         size_t len, ekey_len;
 118         struct eapol_state_machine *sm = sta->eapol_sm;
 119
 120         if (sm == NULL)
 121                 return;
 122
 123         len = sizeof(*key) + key_len;
 124         buf = os_zalloc(sizeof(*hdr) + len);
 125         if (buf == NULL)
 126                 return;
 127
 128         hdr = (struct ieee802_1x_hdr *) buf;
 129         key = (struct ieee802_1x_eapol_key *) (hdr + 1);
 130         key->type = EAPOL_KEY_TYPE_RC4;
 131         WPA_PUT_BE16(key->key_length, key_len);
 132         wpa_get_ntp_timestamp(key->replay_counter);
 133
 134         if (random_get_bytes(key->key_iv, sizeof(key->key_iv))) {
 135                 wpa_printf(MSG_ERROR, "Could not get random numbers");
 136                 os_free(buf);
 137                 return;
 138         }
 139
 140         key->key_index = idx | (broadcast ? 0 : BIT(7));
 141         if (hapd->conf->eapol_key_index_workaround) {
 142                 /* According to some information, WinXP Supplicant seems to
 143                  * interpret bit7 as an indication whether the key is to be
 144                  * activated, so make it possible to enable workaround that
 145                  * sets this bit for all keys. */
 146                 key->key_index |= BIT(7);
 147         }
 148
 149         /* Key is encrypted using "Key-IV + MSK[0..31]" as the RC4-key and
 150          * MSK[32..63] is used to sign the message. */
 151         if (sm->eap_if->eapKeyData == NULL || sm->eap_if->eapKeyDataLen < 64) {
 152                 wpa_printf(MSG_ERROR, "No eapKeyData available for encrypting "
 153                            "and signing EAPOL-Key");
 154                 os_free(buf);
 155                 return;
 156         }
 157         os_memcpy((u8 *) (key + 1), key_data, key_len);
 158         ekey_len = sizeof(key->key_iv) + 32;
 159         ekey = os_malloc(ekey_len);
 160         if (ekey == NULL) {
 161                 wpa_printf(MSG_ERROR, "Could not encrypt key");
 162                 os_free(buf);
 163                 return;
 164         }
 165         os_memcpy(ekey, key->key_iv, sizeof(key->key_iv));
 166         os_memcpy(ekey + sizeof(key->key_iv), sm->eap_if->eapKeyData, 32);
 167         rc4_skip(ekey, ekey_len, 0, (u8 *) (key + 1), key_len);
 168         os_free(ekey);
 169
 170         /* This header is needed here for HMAC-MD5, but it will be regenerated
 171          * in ieee802_1x_send() */
 172         hdr->version = hapd->conf->eapol_version;
 173         hdr->type = IEEE802_1X_TYPE_EAPOL_KEY;
 174         hdr->length = host_to_be16(len);
 175         hmac_md5(sm->eap_if->eapKeyData + 32, 32, buf, sizeof(*hdr) + len,
 176                  key->key_signature);
 177
 178         wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key to " MACSTR
 179                    " (%s index=%d)", MAC2STR(sm->addr),
 180                    broadcast ? "broadcast" : "unicast", idx);
 181         ieee802_1x_send(hapd, sta, IEEE802_1X_TYPE_EAPOL_KEY, (u8 *) key, len);
 182         if (sta->eapol_sm)
 183                 sta->eapol_sm->dot1xAuthEapolFramesTx++;
 184         os_free(buf);
 185 }
 186
 187
 188 #ifndef CONFIG_NO_VLAN
 189 static struct hostapd_wep_keys *
 190 ieee802_1x_group_alloc(struct hostapd_data *hapd, const char *ifname)
 191 {
 192         struct hostapd_wep_keys *key;
 193
 194         key = os_zalloc(sizeof(*key));
 195         if (key == NULL)
 196                 return NULL;
 197
 198         key->default_len = hapd->conf->default_wep_key_len;
 199
 200         if (key->idx >= hapd->conf->broadcast_key_idx_max ||
 201             key->idx < hapd->conf->broadcast_key_idx_min)
 202                 key->idx = hapd->conf->broadcast_key_idx_min;
 203         else
 204                 key->idx++;
 205
 206         if (!key->key[key->idx])
 207                 key->key[key->idx] = os_malloc(key->default_len);
 208         if (key->key[key->idx] == NULL ||
 209             random_get_bytes(key->key[key->idx], key->default_len)) {
 210                 printf("Could not generate random WEP key (dynamic VLAN).\n");
 211                 os_free(key->key[key->idx]);
 212                 key->key[key->idx] = NULL;
 213                 os_free(key);
 214                 return NULL;
 215         }
 216         key->len[key->idx] = key->default_len;
 217
 218         wpa_printf(MSG_DEBUG, "%s: Default WEP idx %d for dynamic VLAN\n",
 219                    ifname, key->idx);
 220         wpa_hexdump_key(MSG_DEBUG, "Default WEP key (dynamic VLAN)",
 221                         key->key[key->idx], key->len[key->idx]);
 222
 223         if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_WEP,
 224                                 broadcast_ether_addr, key->idx, 1,
 225                                 NULL, 0, key->key[key->idx],
 226                                 key->len[key->idx]))
 227                 printf("Could not set dynamic VLAN WEP encryption key.\n");
 228
 229         hostapd_set_drv_ieee8021x(hapd, ifname, 1);
 230
 231         return key;
 232 }
 233
 234
 235 static struct hostapd_wep_keys *
 236 ieee802_1x_get_group(struct hostapd_data *hapd, struct hostapd_ssid *ssid,
 237                      size_t vlan_id)
 238 {
 239         const char *ifname;
 240
 241         if (vlan_id == 0)
 242                 return &ssid->wep;
 243
 244         if (vlan_id <= ssid->max_dyn_vlan_keys && ssid->dyn_vlan_keys &&
 245             ssid->dyn_vlan_keys[vlan_id])
 246                 return ssid->dyn_vlan_keys[vlan_id];
 247
 248         wpa_printf(MSG_DEBUG, "IEEE 802.1X: Creating new group "
 249                    "state machine for VLAN ID %lu",
 250                    (unsigned long) vlan_id);
 251
 252         ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
 253         if (ifname == NULL) {
 254                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Unknown VLAN ID %lu - "
 255                            "cannot create group key state machine",
 256                            (unsigned long) vlan_id);
 257                 return NULL;
 258         }
 259
 260         if (ssid->dyn_vlan_keys == NULL) {
 261                 int size = (vlan_id + 1) * sizeof(ssid->dyn_vlan_keys[0]);
 262                 ssid->dyn_vlan_keys = os_zalloc(size);
 263                 if (ssid->dyn_vlan_keys == NULL)
 264                         return NULL;
 265                 ssid->max_dyn_vlan_keys = vlan_id;
 266         }
 267
 268         if (ssid->max_dyn_vlan_keys < vlan_id) {
 269                 struct hostapd_wep_keys **na;
 270                 int size = (vlan_id + 1) * sizeof(ssid->dyn_vlan_keys[0]);
 271                 na = os_realloc(ssid->dyn_vlan_keys, size);
 272                 if (na == NULL)
 273                         return NULL;
 274                 ssid->dyn_vlan_keys = na;
 275                 os_memset(&ssid->dyn_vlan_keys[ssid->max_dyn_vlan_keys + 1], 0,
 276                           (vlan_id - ssid->max_dyn_vlan_keys) *
 277                           sizeof(ssid->dyn_vlan_keys[0]));
 278                 ssid->max_dyn_vlan_keys = vlan_id;
 279         }
 280
 281         ssid->dyn_vlan_keys[vlan_id] = ieee802_1x_group_alloc(hapd, ifname);
 282
 283         return ssid->dyn_vlan_keys[vlan_id];
 284 }
 285 #endif /* CONFIG_NO_VLAN */
 286
 287
 288 void ieee802_1x_tx_key(struct hostapd_data *hapd, struct sta_info *sta)
 289 {
 290         struct eapol_authenticator *eapol = hapd->eapol_auth;
 291         struct eapol_state_machine *sm = sta->eapol_sm;
 292 #ifndef CONFIG_NO_VLAN
 293         struct hostapd_wep_keys *key = NULL;
 294         int vlan_id;
 295 #endif /* CONFIG_NO_VLAN */
 296
 297         if (sm == NULL || !sm->eap_if->eapKeyData)
 298                 return;
 299
 300         wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key(s) to " MACSTR,
 301                    MAC2STR(sta->addr));
 302
 303 #ifndef CONFIG_NO_VLAN
 304         vlan_id = sta->vlan_id;
 305         if (vlan_id < 0 || vlan_id > MAX_VLAN_ID)
 306                 vlan_id = 0;
 307
 308         if (vlan_id) {
 309                 key = ieee802_1x_get_group(hapd, sta->ssid, vlan_id);
 310                 if (key && key->key[key->idx])
 311                         ieee802_1x_tx_key_one(hapd, sta, key->idx, 1,
 312                                               key->key[key->idx],
 313                                               key->len[key->idx]);
 314         } else
 315 #endif /* CONFIG_NO_VLAN */
 316         if (eapol->default_wep_key) {
 317                 ieee802_1x_tx_key_one(hapd, sta, eapol->default_wep_key_idx, 1,
 318                                       eapol->default_wep_key,
 319                                       hapd->conf->default_wep_key_len);
 320         }
 321
 322         if (hapd->conf->individual_wep_key_len > 0) {
 323                 u8 *ikey;
 324                 ikey = os_malloc(hapd->conf->individual_wep_key_len);
 325                 if (ikey == NULL ||
 326                     random_get_bytes(ikey, hapd->conf->individual_wep_key_len))
 327                 {
 328                         wpa_printf(MSG_ERROR, "Could not generate random "
 329                                    "individual WEP key.");
 330                         os_free(ikey);
 331                         return;
 332                 }
 333
 334                 wpa_hexdump_key(MSG_DEBUG, "Individual WEP key",
 335                                 ikey, hapd->conf->individual_wep_key_len);
 336
 337                 ieee802_1x_tx_key_one(hapd, sta, 0, 0, ikey,
 338                                       hapd->conf->individual_wep_key_len);
 339
 340                 /* TODO: set encryption in TX callback, i.e., only after STA
 341                  * has ACKed EAPOL-Key frame */
 342                 if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
 343                                         sta->addr, 0, 1, NULL, 0, ikey,
 344                                         hapd->conf->individual_wep_key_len)) {
 345                         wpa_printf(MSG_ERROR, "Could not set individual WEP "
 346                                    "encryption.");
 347                 }
 348
 349                 os_free(ikey);
 350         }
 351 }
 352
 353
 354 const char *radius_mode_txt(struct hostapd_data *hapd)
 355 {
 356         switch (hapd->iface->conf->hw_mode) {
 357         case HOSTAPD_MODE_IEEE80211A:
 358                 return "802.11a";
 359         case HOSTAPD_MODE_IEEE80211G:
 360                 return "802.11g";
 361         case HOSTAPD_MODE_IEEE80211B:
 362         default:
 363                 return "802.11b";
 364         }
 365 }
 366
 367
 368 int radius_sta_rate(struct hostapd_data *hapd, struct sta_info *sta)
 369 {
 370         int i;
 371         u8 rate = 0;
 372
 373         for (i = 0; i < sta->supported_rates_len; i++)
 374                 if ((sta->supported_rates[i] & 0x7f) > rate)
 375                         rate = sta->supported_rates[i] & 0x7f;
 376
 377         return rate;
 378 }
 379
 380
 381 #ifndef CONFIG_NO_RADIUS
 382 static void ieee802_1x_learn_identity(struct hostapd_data *hapd,
 383                                       struct eapol_state_machine *sm,
 384                                       const u8 *eap, size_t len)
 385 {
 386         const u8 *identity;
 387         size_t identity_len;
 388
 389         if (len <= sizeof(struct eap_hdr) ||
 390             eap[sizeof(struct eap_hdr)] != EAP_TYPE_IDENTITY)
 391                 return;
 392
 393         identity = eap_get_identity(sm->eap, &identity_len);
 394         if (identity == NULL)
 395                 return;
 396
 397         /* Save station identity for future RADIUS packets */
 398         os_free(sm->identity);
 399         sm->identity = os_malloc(identity_len + 1);
 400         if (sm->identity == NULL) {
 401                 sm->identity_len = 0;
 402                 return;
 403         }
 404
 405         os_memcpy(sm->identity, identity, identity_len);
 406         sm->identity_len = identity_len;
 407         sm->identity[identity_len] = '\0';
 408         hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
 409                        HOSTAPD_LEVEL_DEBUG, "STA identity '%s'", sm->identity);
 410         sm->dot1xAuthEapolRespIdFramesRx++;
 411 }
 412
 413
 414 static int add_common_radius_sta_attr(struct hostapd_data *hapd,
 415                                       struct hostapd_radius_attr *req_attr,
 416                                       struct sta_info *sta,
 417                                       struct radius_msg *msg)
 418 {
 419         char buf[128];
 420
 421         if (!hostapd_config_get_radius_attr(req_attr,
 422                                             RADIUS_ATTR_NAS_PORT) &&
 423             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT, sta->aid)) {
 424                 wpa_printf(MSG_ERROR, "Could not add NAS-Port");
 425                 return -1;
 426         }
 427
 428         os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
 429                     MAC2STR(sta->addr));
 430         buf[sizeof(buf) - 1] = '\0';
 431         if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
 432                                  (u8 *) buf, os_strlen(buf))) {
 433                 wpa_printf(MSG_ERROR, "Could not add Calling-Station-Id");
 434                 return -1;
 435         }
 436
 437         if (sta->flags & WLAN_STA_PREAUTH) {
 438                 os_strlcpy(buf, "IEEE 802.11i Pre-Authentication",
 439                            sizeof(buf));
 440         } else {
 441                 os_snprintf(buf, sizeof(buf), "CONNECT %d%sMbps %s",
 442                             radius_sta_rate(hapd, sta) / 2,
 443                             (radius_sta_rate(hapd, sta) & 1) ? ".5" : "",
 444                             radius_mode_txt(hapd));
 445                 buf[sizeof(buf) - 1] = '\0';
 446         }
 447         if (!hostapd_config_get_radius_attr(req_attr,
 448                                             RADIUS_ATTR_CONNECT_INFO) &&
 449             !radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
 450                                  (u8 *) buf, os_strlen(buf))) {
 451                 wpa_printf(MSG_ERROR, "Could not add Connect-Info");
 452                 return -1;
 453         }
 454
 455         return 0;
 456 }
 457
 458
 459 int add_common_radius_attr(struct hostapd_data *hapd,
 460                            struct hostapd_radius_attr *req_attr,
 461                            struct sta_info *sta,
 462                            struct radius_msg *msg)
 463 {
 464         char buf[128];
 465         struct hostapd_radius_attr *attr;
 466
 467         if (!hostapd_config_get_radius_attr(req_attr,
 468                                             RADIUS_ATTR_NAS_IP_ADDRESS) &&
 469             hapd->conf->own_ip_addr.af == AF_INET &&
 470             !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
 471                                  (u8 *) &hapd->conf->own_ip_addr.u.v4, 4)) {
 472                 wpa_printf(MSG_ERROR, "Could not add NAS-IP-Address");
 473                 return -1;
 474         }
 475
 476 #ifdef CONFIG_IPV6
 477         if (!hostapd_config_get_radius_attr(req_attr,
 478                                             RADIUS_ATTR_NAS_IPV6_ADDRESS) &&
 479             hapd->conf->own_ip_addr.af == AF_INET6 &&
 480             !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IPV6_ADDRESS,
 481                                  (u8 *) &hapd->conf->own_ip_addr.u.v6, 16)) {
 482                 wpa_printf(MSG_ERROR, "Could not add NAS-IPv6-Address");
 483                 return -1;
 484         }
 485 #endif /* CONFIG_IPV6 */
 486
 487         if (!hostapd_config_get_radius_attr(req_attr,
 488                                             RADIUS_ATTR_NAS_IDENTIFIER) &&
 489             hapd->conf->nas_identifier &&
 490             !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IDENTIFIER,
 491                                  (u8 *) hapd->conf->nas_identifier,
 492                                  os_strlen(hapd->conf->nas_identifier))) {
 493                 wpa_printf(MSG_ERROR, "Could not add NAS-Identifier");
 494                 return -1;
 495         }
 496
 497         os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT ":%s",
 498                     MAC2STR(hapd->own_addr),
 499                     wpa_ssid_txt(hapd->conf->ssid.ssid,
 500                                  hapd->conf->ssid.ssid_len));
 501         buf[sizeof(buf) - 1] = '\0';
 502         if (!hostapd_config_get_radius_attr(req_attr,
 503                                             RADIUS_ATTR_CALLED_STATION_ID) &&
 504             !radius_msg_add_attr(msg, RADIUS_ATTR_CALLED_STATION_ID,
 505                                  (u8 *) buf, os_strlen(buf))) {
 506                 wpa_printf(MSG_ERROR, "Could not add Called-Station-Id");
 507                 return -1;
 508         }
 509
 510         if (!hostapd_config_get_radius_attr(req_attr,
 511                                             RADIUS_ATTR_NAS_PORT_TYPE) &&
 512             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
 513                                        RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
 514                 wpa_printf(MSG_ERROR, "Could not add NAS-Port-Type");
 515                 return -1;
 516         }
 517
 518         if (sta && add_common_radius_sta_attr(hapd, req_attr, sta, msg) < 0)
 519                 return -1;
 520
 521         for (attr = req_attr; attr; attr = attr->next) {
 522                 if (!radius_msg_add_attr(msg, attr->type,
 523                                          wpabuf_head(attr->val),
 524                                          wpabuf_len(attr->val))) {
 525                         wpa_printf(MSG_ERROR, "Could not add RADIUS "
 526                                    "attribute");
 527                         return -1;
 528                 }
 529         }
 530
 531         return 0;
 532 }
 533
 534
 535 static void ieee802_1x_encapsulate_radius(struct hostapd_data *hapd,
 536                                           struct sta_info *sta,
 537                                           const u8 *eap, size_t len)
 538 {
 539         struct radius_msg *msg;
 540         struct eapol_state_machine *sm = sta->eapol_sm;
 541
 542         if (sm == NULL)
 543                 return;
 544
 545         ieee802_1x_learn_identity(hapd, sm, eap, len);
 546
 547         wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
 548                    "packet");
 549
 550         sm->radius_identifier = radius_client_get_id(hapd->radius);
 551         msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
 552                              sm->radius_identifier);
 553         if (msg == NULL) {
 554                 printf("Could not create net RADIUS packet\n");
 555                 return;
 556         }
 557
 558         radius_msg_make_authenticator(msg, (u8 *) sta, sizeof(*sta));
 559
 560         if (sm->identity &&
 561             !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
 562                                  sm->identity, sm->identity_len)) {
 563                 printf("Could not add User-Name\n");
 564                 goto fail;
 565         }
 566
 567         if (add_common_radius_attr(hapd, hapd->conf->radius_auth_req_attr, sta,
 568                                    msg) < 0)
 569                 goto fail;
 570
 571         /* TODO: should probably check MTU from driver config; 2304 is max for
 572          * IEEE 802.11, but use 1400 to avoid problems with too large packets
 573          */
 574         if (!hostapd_config_get_radius_attr(hapd->conf->radius_auth_req_attr,
 575                                             RADIUS_ATTR_FRAMED_MTU) &&
 576             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
 577                 printf("Could not add Framed-MTU\n");
 578                 goto fail;
 579         }
 580
 581         if (eap && !radius_msg_add_eap(msg, eap, len)) {
 582                 printf("Could not add EAP-Message\n");
 583                 goto fail;
 584         }
 585
 586         /* State attribute must be copied if and only if this packet is
 587          * Access-Request reply to the previous Access-Challenge */
 588         if (sm->last_recv_radius &&
 589             radius_msg_get_hdr(sm->last_recv_radius)->code ==
 590             RADIUS_CODE_ACCESS_CHALLENGE) {
 591                 int res = radius_msg_copy_attr(msg, sm->last_recv_radius,
 592                                                RADIUS_ATTR_STATE);
 593                 if (res < 0) {
 594                         printf("Could not copy State attribute from previous "
 595                                "Access-Challenge\n");
 596                         goto fail;
 597                 }
 598                 if (res > 0) {
 599                         wpa_printf(MSG_DEBUG, "Copied RADIUS State Attribute");
 600                 }
 601         }
 602
 603         if (hapd->conf->radius_request_cui) {
 604                 const u8 *cui;
 605                 size_t cui_len;
 606                 /* Add previously learned CUI or nul CUI to request CUI */
 607                 if (sm->radius_cui) {
 608                         cui = wpabuf_head(sm->radius_cui);
 609                         cui_len = wpabuf_len(sm->radius_cui);
 610                 } else {
 611                         cui = (const u8 *) "\0";
 612                         cui_len = 1;
 613                 }
 614                 if (!radius_msg_add_attr(msg,
 615                                          RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
 616                                          cui, cui_len)) {
 617                         wpa_printf(MSG_ERROR, "Could not add CUI");
 618                         goto fail;
 619                 }
 620         }
 621
 622         if (radius_client_send(hapd->radius, msg, RADIUS_AUTH, sta->addr) < 0)
 623                 goto fail;
 624
 625         return;
 626
 627  fail:
 628         radius_msg_free(msg);
 629 }
 630 #endif /* CONFIG_NO_RADIUS */
 631
 632
 633 static void handle_eap_response(struct hostapd_data *hapd,
 634                                 struct sta_info *sta, struct eap_hdr *eap,
 635                                 size_t len)
 636 {
 637         u8 type, *data;
 638         struct eapol_state_machine *sm = sta->eapol_sm;
 639         if (sm == NULL)
 640                 return;
 641
 642         data = (u8 *) (eap + 1);
 643
 644         if (len < sizeof(*eap) + 1) {
 645                 printf("handle_eap_response: too short response data\n");
 646                 return;
 647         }
 648
 649         sm->eap_type_supp = type = data[0];
 650
 651         hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
 652                        HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
 653                        "id=%d len=%d) from STA: EAP Response-%s (%d)",
 654                        eap->code, eap->identifier, be_to_host16(eap->length),
 655                        eap_server_get_name(0, type), type);
 656
 657         sm->dot1xAuthEapolRespFramesRx++;
 658
 659         wpabuf_free(sm->eap_if->eapRespData);
 660         sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
 661         sm->eapolEap = TRUE;
 662 }
 663
 664
 665 /* Process incoming EAP packet from Supplicant */
 666 static void handle_eap(struct hostapd_data *hapd, struct sta_info *sta,
 667                        u8 *buf, size_t len)
 668 {
 669         struct eap_hdr *eap;
 670         u16 eap_len;
 671
 672         if (len < sizeof(*eap)) {
 673                 printf("   too short EAP packet\n");
 674                 return;
 675         }
 676
 677         eap = (struct eap_hdr *) buf;
 678
 679         eap_len = be_to_host16(eap->length);
 680         wpa_printf(MSG_DEBUG, "EAP: code=%d identifier=%d length=%d",
 681                    eap->code, eap->identifier, eap_len);
 682         if (eap_len < sizeof(*eap)) {
 683                 wpa_printf(MSG_DEBUG, "   Invalid EAP length");
 684                 return;
 685         } else if (eap_len > len) {
 686                 wpa_printf(MSG_DEBUG, "   Too short frame to contain this EAP "
 687                            "packet");
 688                 return;
 689         } else if (eap_len < len) {
 690                 wpa_printf(MSG_DEBUG, "   Ignoring %lu extra bytes after EAP "
 691                            "packet", (unsigned long) len - eap_len);
 692         }
 693
 694         switch (eap->code) {
 695         case EAP_CODE_REQUEST:
 696                 wpa_printf(MSG_DEBUG, " (request)");
 697                 return;
 698         case EAP_CODE_RESPONSE:
 699                 wpa_printf(MSG_DEBUG, " (response)");
 700                 handle_eap_response(hapd, sta, eap, eap_len);
 701                 break;
 702         case EAP_CODE_SUCCESS:
 703                 wpa_printf(MSG_DEBUG, " (success)");
 704                 return;
 705         case EAP_CODE_FAILURE:
 706                 wpa_printf(MSG_DEBUG, " (failure)");
 707                 return;
 708         default:
 709                 wpa_printf(MSG_DEBUG, " (unknown code)");
 710                 return;
 711         }
 712 }
 713
 714
 715 static struct eapol_state_machine *
 716 ieee802_1x_alloc_eapol_sm(struct hostapd_data *hapd, struct sta_info *sta)
 717 {
 718         int flags = 0;
 719         if (sta->flags & WLAN_STA_PREAUTH)
 720                 flags |= EAPOL_SM_PREAUTH;
 721         if (sta->wpa_sm) {
 722                 flags |= EAPOL_SM_USES_WPA;
 723                 if (wpa_auth_sta_get_pmksa(sta->wpa_sm))
 724                         flags |= EAPOL_SM_FROM_PMKSA_CACHE;
 725         }
 726         return eapol_auth_alloc(hapd->eapol_auth, sta->addr, flags,
 727                                 sta->wps_ie, sta->p2p_ie, sta,
 728                                 sta->identity, sta->radius_cui);
 729 }
 730
 731
 732 /**
 733  * ieee802_1x_receive - Process the EAPOL frames from the Supplicant
 734  * @hapd: hostapd BSS data
 735  * @sa: Source address (sender of the EAPOL frame)
 736  * @buf: EAPOL frame
 737  * @len: Length of buf in octets
 738  *
 739  * This function is called for each incoming EAPOL frame from the interface
 740  */
 741 void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf,
 742                         size_t len)
 743 {
 744         struct sta_info *sta;
 745         struct ieee802_1x_hdr *hdr;
 746         struct ieee802_1x_eapol_key *key;
 747         u16 datalen;
 748         struct rsn_pmksa_cache_entry *pmksa;
 749         int key_mgmt;
 750
 751         if (!hapd->conf->ieee802_1x && !hapd->conf->wpa &&
 752             !hapd->conf->wps_state)
 753                 return;
 754
 755         wpa_printf(MSG_DEBUG, "IEEE 802.1X: %lu bytes from " MACSTR,
 756                    (unsigned long) len, MAC2STR(sa));
 757         sta = ap_get_sta(hapd, sa);
 758         if (!sta || (!(sta->flags & (WLAN_STA_ASSOC | WLAN_STA_PREAUTH)) &&
 759                      !(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED))) {
 760                 wpa_printf(MSG_DEBUG, "IEEE 802.1X data frame from not "
 761                            "associated/Pre-authenticating STA");
 762                 return;
 763         }
 764
 765         if (len < sizeof(*hdr)) {
 766                 printf("   too short IEEE 802.1X packet\n");
 767                 return;
 768         }
 769
 770         hdr = (struct ieee802_1x_hdr *) buf;
 771         datalen = be_to_host16(hdr->length);
 772         wpa_printf(MSG_DEBUG, "   IEEE 802.1X: version=%d type=%d length=%d",
 773                    hdr->version, hdr->type, datalen);
 774
 775         if (len - sizeof(*hdr) < datalen) {
 776                 printf("   frame too short for this IEEE 802.1X packet\n");
 777                 if (sta->eapol_sm)
 778                         sta->eapol_sm->dot1xAuthEapLengthErrorFramesRx++;
 779                 return;
 780         }
 781         if (len - sizeof(*hdr) > datalen) {
 782                 wpa_printf(MSG_DEBUG, "   ignoring %lu extra octets after "
 783                            "IEEE 802.1X packet",
 784                            (unsigned long) len - sizeof(*hdr) - datalen);
 785         }
 786
 787         if (sta->eapol_sm) {
 788                 sta->eapol_sm->dot1xAuthLastEapolFrameVersion = hdr->version;
 789                 sta->eapol_sm->dot1xAuthEapolFramesRx++;
 790         }
 791
 792         key = (struct ieee802_1x_eapol_key *) (hdr + 1);
 793         if (datalen >= sizeof(struct ieee802_1x_eapol_key) &&
 794             hdr->type == IEEE802_1X_TYPE_EAPOL_KEY &&
 795             (key->type == EAPOL_KEY_TYPE_WPA ||
 796              key->type == EAPOL_KEY_TYPE_RSN)) {
 797                 wpa_receive(hapd->wpa_auth, sta->wpa_sm, (u8 *) hdr,
 798                             sizeof(*hdr) + datalen);
 799                 return;
 800         }
 801
 802         if (!hapd->conf->ieee802_1x &&
 803             !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
 804                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
 805                            "802.1X not enabled and WPS not used");
 806                 return;
 807         }
 808
 809         key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
 810         if (key_mgmt != -1 && wpa_key_mgmt_wpa_psk(key_mgmt)) {
 811                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
 812                            "STA is using PSK");
 813                 return;
 814         }
 815
 816         if (!sta->eapol_sm) {
 817                 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
 818                 if (!sta->eapol_sm)
 819                         return;
 820
 821 #ifdef CONFIG_WPS
 822                 if (!hapd->conf->ieee802_1x) {
 823                         u32 wflags = sta->flags & (WLAN_STA_WPS |
 824                                                    WLAN_STA_WPS2 |
 825                                                    WLAN_STA_MAYBE_WPS);
 826                         if (wflags == WLAN_STA_MAYBE_WPS ||
 827                             wflags == (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) {
 828                                 /*
 829                                  * Delay EAPOL frame transmission until a
 830                                  * possible WPS STA initiates the handshake
 831                                  * with EAPOL-Start. Only allow the wait to be
 832                                  * skipped if the STA is known to support WPS
 833                                  * 2.0.
 834                                  */
 835                                 wpa_printf(MSG_DEBUG, "WPS: Do not start "
 836                                            "EAPOL until EAPOL-Start is "
 837                                            "received");
 838                                 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
 839                         }
 840                 }
 841 #endif /* CONFIG_WPS */
 842
 843                 sta->eapol_sm->eap_if->portEnabled = TRUE;
 844         }
 845
 846         /* since we support version 1, we can ignore version field and proceed
 847          * as specified in version 1 standard [IEEE Std 802.1X-2001, 7.5.5] */
 848         /* TODO: actually, we are not version 1 anymore.. However, Version 2
 849          * does not change frame contents, so should be ok to process frames
 850          * more or less identically. Some changes might be needed for
 851          * verification of fields. */
 852
 853         switch (hdr->type) {
 854         case IEEE802_1X_TYPE_EAP_PACKET:
 855                 handle_eap(hapd, sta, (u8 *) (hdr + 1), datalen);
 856                 break;
 857
 858         case IEEE802_1X_TYPE_EAPOL_START:
 859                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
 860                                HOSTAPD_LEVEL_DEBUG, "received EAPOL-Start "
 861                                "from STA");
 862                 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
 863                 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
 864                 if (pmksa) {
 865                         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
 866                                        HOSTAPD_LEVEL_DEBUG, "cached PMKSA "
 867                                        "available - ignore it since "
 868                                        "STA sent EAPOL-Start");
 869                         wpa_auth_sta_clear_pmksa(sta->wpa_sm, pmksa);
 870                 }
 871                 sta->eapol_sm->eapolStart = TRUE;
 872                 sta->eapol_sm->dot1xAuthEapolStartFramesRx++;
 873                 eap_server_clear_identity(sta->eapol_sm->eap);
 874                 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
 875                 break;
 876
 877         case IEEE802_1X_TYPE_EAPOL_LOGOFF:
 878                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
 879                                HOSTAPD_LEVEL_DEBUG, "received EAPOL-Logoff "
 880                                "from STA");
 881                 sta->acct_terminate_cause =
 882                         RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
 883                 accounting_sta_stop(hapd, sta);
 884                 sta->eapol_sm->eapolLogoff = TRUE;
 885                 sta->eapol_sm->dot1xAuthEapolLogoffFramesRx++;
 886                 eap_server_clear_identity(sta->eapol_sm->eap);
 887                 break;
 888
 889         case IEEE802_1X_TYPE_EAPOL_KEY:
 890                 wpa_printf(MSG_DEBUG, "   EAPOL-Key");
 891                 if (!ap_sta_is_authorized(sta)) {
 892                         wpa_printf(MSG_DEBUG, "   Dropped key data from "
 893                                    "unauthorized Supplicant");
 894                         break;
 895                 }
 896                 break;
 897
 898         case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT:
 899                 wpa_printf(MSG_DEBUG, "   EAPOL-Encapsulated-ASF-Alert");
 900                 /* TODO: implement support for this; show data */
 901                 break;
 902
 903         default:
 904                 wpa_printf(MSG_DEBUG, "   unknown IEEE 802.1X packet type");
 905                 sta->eapol_sm->dot1xAuthInvalidEapolFramesRx++;
 906                 break;
 907         }
 908
 909         eapol_auth_step(sta->eapol_sm);
 910 }
 911
 912
 913 /**
 914  * ieee802_1x_new_station - Start IEEE 802.1X authentication
 915  * @hapd: hostapd BSS data
 916  * @sta: The station
 917  *
 918  * This function is called to start IEEE 802.1X authentication when a new
 919  * station completes IEEE 802.11 association.
 920  */
 921 void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta)
 922 {
 923         struct rsn_pmksa_cache_entry *pmksa;
 924         int reassoc = 1;
 925         int force_1x = 0;
 926         int key_mgmt;
 927
 928 #ifdef CONFIG_WPS
 929         if (hapd->conf->wps_state && hapd->conf->wpa &&
 930             (sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
 931                 /*
 932                  * Need to enable IEEE 802.1X/EAPOL state machines for possible
 933                  * WPS handshake even if IEEE 802.1X/EAPOL is not used for
 934                  * authentication in this BSS.
 935                  */
 936                 force_1x = 1;
 937         }
 938 #endif /* CONFIG_WPS */
 939
 940         if (!force_1x && !hapd->conf->ieee802_1x) {
 941                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - "
 942                            "802.1X not enabled or forced for WPS");
 943                 /*
 944                  * Clear any possible EAPOL authenticator state to support
 945                  * reassociation change from WPS to PSK.
 946                  */
 947                 ieee802_1x_free_station(sta);
 948                 return;
 949         }
 950
 951         key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
 952         if (key_mgmt != -1 && wpa_key_mgmt_wpa_psk(key_mgmt)) {
 953                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - using PSK");
 954                 /*
 955                  * Clear any possible EAPOL authenticator state to support
 956                  * reassociation change from WPA-EAP to PSK.
 957                  */
 958                 ieee802_1x_free_station(sta);
 959                 return;
 960         }
 961
 962         if (sta->eapol_sm == NULL) {
 963                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
 964                                HOSTAPD_LEVEL_DEBUG, "start authentication");
 965                 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
 966                 if (sta->eapol_sm == NULL) {
 967                         hostapd_logger(hapd, sta->addr,
 968                                        HOSTAPD_MODULE_IEEE8021X,
 969                                        HOSTAPD_LEVEL_INFO,
 970                                        "failed to allocate state machine");
 971                         return;
 972                 }
 973                 reassoc = 0;
 974         }
 975
 976 #ifdef CONFIG_WPS
 977         sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
 978         if (!hapd->conf->ieee802_1x && !(sta->flags & WLAN_STA_WPS2)) {
 979                 /*
 980                  * Delay EAPOL frame transmission until a possible WPS STA
 981                  * initiates the handshake with EAPOL-Start. Only allow the
 982                  * wait to be skipped if the STA is known to support WPS 2.0.
 983                  */
 984                 wpa_printf(MSG_DEBUG, "WPS: Do not start EAPOL until "
 985                            "EAPOL-Start is received");
 986                 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
 987         }
 988 #endif /* CONFIG_WPS */
 989
 990         sta->eapol_sm->eap_if->portEnabled = TRUE;
 991
 992 #ifdef CONFIG_IEEE80211R
 993         if (sta->auth_alg == WLAN_AUTH_FT) {
 994                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
 995                                HOSTAPD_LEVEL_DEBUG,
 996                                "PMK from FT - skip IEEE 802.1X/EAP");
 997                 /* Setup EAPOL state machines to already authenticated state
 998                  * because of existing FT information from R0KH. */
 999                 sta->eapol_sm->keyRun = TRUE;
1000                 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1001                 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1002                 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1003                 sta->eapol_sm->authSuccess = TRUE;
1004                 sta->eapol_sm->authFail = FALSE;
1005                 if (sta->eapol_sm->eap)
1006                         eap_sm_notify_cached(sta->eapol_sm->eap);
1007                 /* TODO: get vlan_id from R0KH using RRB message */
1008                 return;
1009         }
1010 #endif /* CONFIG_IEEE80211R */
1011
1012         pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
1013         if (pmksa) {
1014                 int old_vlanid;
1015
1016                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1017                                HOSTAPD_LEVEL_DEBUG,
1018                                "PMK from PMKSA cache - skip IEEE 802.1X/EAP");
1019                 /* Setup EAPOL state machines to already authenticated state
1020                  * because of existing PMKSA information in the cache. */
1021                 sta->eapol_sm->keyRun = TRUE;
1022                 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1023                 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1024                 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1025                 sta->eapol_sm->authSuccess = TRUE;
1026                 sta->eapol_sm->authFail = FALSE;
1027                 if (sta->eapol_sm->eap)
1028                         eap_sm_notify_cached(sta->eapol_sm->eap);
1029                 old_vlanid = sta->vlan_id;
1030                 pmksa_cache_to_eapol_data(pmksa, sta->eapol_sm);
1031                 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
1032                         sta->vlan_id = 0;
1033                 ap_sta_bind_vlan(hapd, sta, old_vlanid);
1034         } else {
1035                 if (reassoc) {
1036                         /*
1037                          * Force EAPOL state machines to start
1038                          * re-authentication without having to wait for the
1039                          * Supplicant to send EAPOL-Start.
1040                          */
1041                         sta->eapol_sm->reAuthenticate = TRUE;
1042                 }
1043                 eapol_auth_step(sta->eapol_sm);
1044         }
1045 }
1046
1047
1048 void ieee802_1x_free_station(struct sta_info *sta)
1049 {
1050         struct eapol_state_machine *sm = sta->eapol_sm;
1051
1052         if (sm == NULL)
1053                 return;
1054
1055         sta->eapol_sm = NULL;
1056
1057 #ifndef CONFIG_NO_RADIUS
1058         radius_msg_free(sm->last_recv_radius);
1059         radius_free_class(&sm->radius_class);
1060         wpabuf_free(sm->radius_cui);
1061 #endif /* CONFIG_NO_RADIUS */
1062
1063         os_free(sm->identity);
1064         eapol_auth_free(sm);
1065 }
1066
1067
1068 #ifndef CONFIG_NO_RADIUS
1069 static void ieee802_1x_decapsulate_radius(struct hostapd_data *hapd,
1070                                           struct sta_info *sta)
1071 {
1072         struct wpabuf *eap;
1073         const struct eap_hdr *hdr;
1074         int eap_type = -1;
1075         char buf[64];
1076         struct radius_msg *msg;
1077         struct eapol_state_machine *sm = sta->eapol_sm;
1078
1079         if (sm == NULL || sm->last_recv_radius == NULL) {
1080                 if (sm)
1081                         sm->eap_if->aaaEapNoReq = TRUE;
1082                 return;
1083         }
1084
1085         msg = sm->last_recv_radius;
1086
1087         eap = radius_msg_get_eap(msg);
1088         if (eap == NULL) {
1089                 /* RFC 3579, Chap. 2.6.3:
1090                  * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
1091                  * attribute */
1092                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1093                                HOSTAPD_LEVEL_WARNING, "could not extract "
1094                                "EAP-Message from RADIUS message");
1095                 sm->eap_if->aaaEapNoReq = TRUE;
1096                 return;
1097         }
1098
1099         if (wpabuf_len(eap) < sizeof(*hdr)) {
1100                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1101                                HOSTAPD_LEVEL_WARNING, "too short EAP packet "
1102                                "received from authentication server");
1103                 wpabuf_free(eap);
1104                 sm->eap_if->aaaEapNoReq = TRUE;
1105                 return;
1106         }
1107
1108         if (wpabuf_len(eap) > sizeof(*hdr))
1109                 eap_type = (wpabuf_head_u8(eap))[sizeof(*hdr)];
1110
1111         hdr = wpabuf_head(eap);
1112         switch (hdr->code) {
1113         case EAP_CODE_REQUEST:
1114                 if (eap_type >= 0)
1115                         sm->eap_type_authsrv = eap_type;
1116                 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
1117                             eap_type >= 0 ? eap_server_get_name(0, eap_type) :
1118                             "??",
1119                             eap_type);
1120                 break;
1121         case EAP_CODE_RESPONSE:
1122                 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
1123                             eap_type >= 0 ? eap_server_get_name(0, eap_type) :
1124                             "??",
1125                             eap_type);
1126                 break;
1127         case EAP_CODE_SUCCESS:
1128                 os_strlcpy(buf, "EAP Success", sizeof(buf));
1129                 break;
1130         case EAP_CODE_FAILURE:
1131                 os_strlcpy(buf, "EAP Failure", sizeof(buf));
1132                 break;
1133         default:
1134                 os_strlcpy(buf, "unknown EAP code", sizeof(buf));
1135                 break;
1136         }
1137         buf[sizeof(buf) - 1] = '\0';
1138         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1139                        HOSTAPD_LEVEL_DEBUG, "decapsulated EAP packet (code=%d "
1140                        "id=%d len=%d) from RADIUS server: %s",
1141                        hdr->code, hdr->identifier, be_to_host16(hdr->length),
1142                        buf);
1143         sm->eap_if->aaaEapReq = TRUE;
1144
1145         wpabuf_free(sm->eap_if->aaaEapReqData);
1146         sm->eap_if->aaaEapReqData = eap;
1147 }
1148
1149
1150 static void ieee802_1x_get_keys(struct hostapd_data *hapd,
1151                                 struct sta_info *sta, struct radius_msg *msg,
1152                                 struct radius_msg *req,
1153                                 const u8 *shared_secret,
1154                                 size_t shared_secret_len)
1155 {
1156         struct radius_ms_mppe_keys *keys;
1157         struct eapol_state_machine *sm = sta->eapol_sm;
1158         if (sm == NULL)
1159                 return;
1160
1161         keys = radius_msg_get_ms_keys(msg, req, shared_secret,
1162                                       shared_secret_len);
1163
1164         if (keys && keys->send && keys->recv) {
1165                 size_t len = keys->send_len + keys->recv_len;
1166                 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Send-Key",
1167                                 keys->send, keys->send_len);
1168                 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Recv-Key",
1169                                 keys->recv, keys->recv_len);
1170
1171                 os_free(sm->eap_if->aaaEapKeyData);
1172                 sm->eap_if->aaaEapKeyData = os_malloc(len);
1173                 if (sm->eap_if->aaaEapKeyData) {
1174                         os_memcpy(sm->eap_if->aaaEapKeyData, keys->recv,
1175                                   keys->recv_len);
1176                         os_memcpy(sm->eap_if->aaaEapKeyData + keys->recv_len,
1177                                   keys->send, keys->send_len);
1178                         sm->eap_if->aaaEapKeyDataLen = len;
1179                         sm->eap_if->aaaEapKeyAvailable = TRUE;
1180                 }
1181         }
1182
1183         if (keys) {
1184                 os_free(keys->send);
1185                 os_free(keys->recv);
1186                 os_free(keys);
1187         }
1188 }
1189
1190
1191 static void ieee802_1x_store_radius_class(struct hostapd_data *hapd,
1192                                           struct sta_info *sta,
1193                                           struct radius_msg *msg)
1194 {
1195         u8 *class;
1196         size_t class_len;
1197         struct eapol_state_machine *sm = sta->eapol_sm;
1198         int count, i;
1199         struct radius_attr_data *nclass;
1200         size_t nclass_count;
1201
1202         if (!hapd->conf->radius->acct_server || hapd->radius == NULL ||
1203             sm == NULL)
1204                 return;
1205
1206         radius_free_class(&sm->radius_class);
1207         count = radius_msg_count_attr(msg, RADIUS_ATTR_CLASS, 1);
1208         if (count <= 0)
1209                 return;
1210
1211         nclass = os_calloc(count, sizeof(struct radius_attr_data));
1212         if (nclass == NULL)
1213                 return;
1214
1215         nclass_count = 0;
1216
1217         class = NULL;
1218         for (i = 0; i < count; i++) {
1219                 do {
1220                         if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CLASS,
1221                                                     &class, &class_len,
1222                                                     class) < 0) {
1223                                 i = count;
1224                                 break;
1225                         }
1226                 } while (class_len < 1);
1227
1228                 nclass[nclass_count].data = os_malloc(class_len);
1229                 if (nclass[nclass_count].data == NULL)
1230                         break;
1231
1232                 os_memcpy(nclass[nclass_count].data, class, class_len);
1233                 nclass[nclass_count].len = class_len;
1234                 nclass_count++;
1235         }
1236
1237         sm->radius_class.attr = nclass;
1238         sm->radius_class.count = nclass_count;
1239         wpa_printf(MSG_DEBUG, "IEEE 802.1X: Stored %lu RADIUS Class "
1240                    "attributes for " MACSTR,
1241                    (unsigned long) sm->radius_class.count,
1242                    MAC2STR(sta->addr));
1243 }
1244
1245
1246 /* Update sta->identity based on User-Name attribute in Access-Accept */
1247 static void ieee802_1x_update_sta_identity(struct hostapd_data *hapd,
1248                                            struct sta_info *sta,
1249                                            struct radius_msg *msg)
1250 {
1251         u8 *buf, *identity;
1252         size_t len;
1253         struct eapol_state_machine *sm = sta->eapol_sm;
1254
1255         if (sm == NULL)
1256                 return;
1257
1258         if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &buf, &len,
1259                                     NULL) < 0)
1260                 return;
1261
1262         identity = os_malloc(len + 1);
1263         if (identity == NULL)
1264                 return;
1265
1266         os_memcpy(identity, buf, len);
1267         identity[len] = '\0';
1268
1269         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1270                        HOSTAPD_LEVEL_DEBUG, "old identity '%s' updated with "
1271                        "User-Name from Access-Accept '%s'",
1272                        sm->identity ? (char *) sm->identity : "N/A",
1273                        (char *) identity);
1274
1275         os_free(sm->identity);
1276         sm->identity = identity;
1277         sm->identity_len = len;
1278 }
1279
1280
1281 /* Update CUI based on Chargeable-User-Identity attribute in Access-Accept */
1282 static void ieee802_1x_update_sta_cui(struct hostapd_data *hapd,
1283                                       struct sta_info *sta,
1284                                       struct radius_msg *msg)
1285 {
1286         struct eapol_state_machine *sm = sta->eapol_sm;
1287         struct wpabuf *cui;
1288         u8 *buf;
1289         size_t len;
1290
1291         if (sm == NULL)
1292                 return;
1293
1294         if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
1295                                     &buf, &len, NULL) < 0)
1296                 return;
1297
1298         cui = wpabuf_alloc_copy(buf, len);
1299         if (cui == NULL)
1300                 return;
1301
1302         wpabuf_free(sm->radius_cui);
1303         sm->radius_cui = cui;
1304 }
1305
1306
1307 struct sta_id_search {
1308         u8 identifier;
1309         struct eapol_state_machine *sm;
1310 };
1311
1312
1313 static int ieee802_1x_select_radius_identifier(struct hostapd_data *hapd,
1314                                                struct sta_info *sta,
1315                                                void *ctx)
1316 {
1317         struct sta_id_search *id_search = ctx;
1318         struct eapol_state_machine *sm = sta->eapol_sm;
1319
1320         if (sm && sm->radius_identifier >= 0 &&
1321             sm->radius_identifier == id_search->identifier) {
1322                 id_search->sm = sm;
1323                 return 1;
1324         }
1325         return 0;
1326 }
1327
1328
1329 static struct eapol_state_machine *
1330 ieee802_1x_search_radius_identifier(struct hostapd_data *hapd, u8 identifier)
1331 {
1332         struct sta_id_search id_search;
1333         id_search.identifier = identifier;
1334         id_search.sm = NULL;
1335         ap_for_each_sta(hapd, ieee802_1x_select_radius_identifier, &id_search);
1336         return id_search.sm;
1337 }
1338
1339
1340 /**
1341  * ieee802_1x_receive_auth - Process RADIUS frames from Authentication Server
1342  * @msg: RADIUS response message
1343  * @req: RADIUS request message
1344  * @shared_secret: RADIUS shared secret
1345  * @shared_secret_len: Length of shared_secret in octets
1346  * @data: Context data (struct hostapd_data *)
1347  * Returns: Processing status
1348  */
1349 static RadiusRxResult
1350 ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
1351                         const u8 *shared_secret, size_t shared_secret_len,
1352                         void *data)
1353 {
1354         struct hostapd_data *hapd = data;
1355         struct sta_info *sta;
1356         u32 session_timeout = 0, termination_action, acct_interim_interval;
1357         int session_timeout_set, old_vlanid = 0;
1358         struct eapol_state_machine *sm;
1359         int override_eapReq = 0;
1360         struct radius_hdr *hdr = radius_msg_get_hdr(msg);
1361
1362         sm = ieee802_1x_search_radius_identifier(hapd, hdr->identifier);
1363         if (sm == NULL) {
1364                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Could not find matching "
1365                            "station for this RADIUS message");
1366                 return RADIUS_RX_UNKNOWN;
1367         }
1368         sta = sm->sta;
1369
1370         /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
1371          * present when packet contains an EAP-Message attribute */
1372         if (hdr->code == RADIUS_CODE_ACCESS_REJECT &&
1373             radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
1374                                 0) < 0 &&
1375             radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
1376                 wpa_printf(MSG_DEBUG, "Allowing RADIUS Access-Reject without "
1377                            "Message-Authenticator since it does not include "
1378                            "EAP-Message");
1379         } else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
1380                                      req, 1)) {
1381                 printf("Incoming RADIUS packet did not have correct "
1382                        "Message-Authenticator - dropped\n");
1383                 return RADIUS_RX_INVALID_AUTHENTICATOR;
1384         }
1385
1386         if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
1387             hdr->code != RADIUS_CODE_ACCESS_REJECT &&
1388             hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
1389                 printf("Unknown RADIUS message code\n");
1390                 return RADIUS_RX_UNKNOWN;
1391         }
1392
1393         sm->radius_identifier = -1;
1394         wpa_printf(MSG_DEBUG, "RADIUS packet matching with station " MACSTR,
1395                    MAC2STR(sta->addr));
1396
1397         radius_msg_free(sm->last_recv_radius);
1398         sm->last_recv_radius = msg;
1399
1400         session_timeout_set =
1401                 !radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
1402                                            &session_timeout);
1403         if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_TERMINATION_ACTION,
1404                                       &termination_action))
1405                 termination_action = RADIUS_TERMINATION_ACTION_DEFAULT;
1406
1407         if (hapd->conf->acct_interim_interval == 0 &&
1408             hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
1409             radius_msg_get_attr_int32(msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
1410                                       &acct_interim_interval) == 0) {
1411                 if (acct_interim_interval < 60) {
1412                         hostapd_logger(hapd, sta->addr,
1413                                        HOSTAPD_MODULE_IEEE8021X,
1414                                        HOSTAPD_LEVEL_INFO,
1415                                        "ignored too small "
1416                                        "Acct-Interim-Interval %d",
1417                                        acct_interim_interval);
1418                 } else
1419                         sta->acct_interim_interval = acct_interim_interval;
1420         }
1421
1422
1423         switch (hdr->code) {
1424         case RADIUS_CODE_ACCESS_ACCEPT:
1425                 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
1426                         sta->vlan_id = 0;
1427 #ifndef CONFIG_NO_VLAN
1428                 else {
1429                         old_vlanid = sta->vlan_id;
1430                         sta->vlan_id = radius_msg_get_vlanid(msg);
1431                 }
1432                 if (sta->vlan_id > 0 &&
1433                     hostapd_get_vlan_id_ifname(hapd->conf->vlan,
1434                                                sta->vlan_id)) {
1435                         hostapd_logger(hapd, sta->addr,
1436                                        HOSTAPD_MODULE_RADIUS,
1437                                        HOSTAPD_LEVEL_INFO,
1438                                        "VLAN ID %d", sta->vlan_id);
1439                 } else if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_REQUIRED) {
1440                         sta->eapol_sm->authFail = TRUE;
1441                         hostapd_logger(hapd, sta->addr,
1442                                        HOSTAPD_MODULE_IEEE8021X,
1443                                        HOSTAPD_LEVEL_INFO, "authentication "
1444                                        "server did not include required VLAN "
1445                                        "ID in Access-Accept");
1446                         break;
1447                 }
1448 #endif /* CONFIG_NO_VLAN */
1449
1450                 if (ap_sta_bind_vlan(hapd, sta, old_vlanid) < 0)
1451                         break;
1452
1453                 /* RFC 3580, Ch. 3.17 */
1454                 if (session_timeout_set && termination_action ==
1455                     RADIUS_TERMINATION_ACTION_RADIUS_REQUEST) {
1456                         sm->reAuthPeriod = session_timeout;
1457                 } else if (session_timeout_set)
1458                         ap_sta_session_timeout(hapd, sta, session_timeout);
1459
1460                 sm->eap_if->aaaSuccess = TRUE;
1461                 override_eapReq = 1;
1462                 ieee802_1x_get_keys(hapd, sta, msg, req, shared_secret,
1463                                     shared_secret_len);
1464                 ieee802_1x_store_radius_class(hapd, sta, msg);
1465                 ieee802_1x_update_sta_identity(hapd, sta, msg);
1466                 ieee802_1x_update_sta_cui(hapd, sta, msg);
1467                 if (sm->eap_if->eapKeyAvailable &&
1468                     wpa_auth_pmksa_add(sta->wpa_sm, sm->eapol_key_crypt,
1469                                        session_timeout_set ?
1470                                        (int) session_timeout : -1, sm) == 0) {
1471                         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
1472                                        HOSTAPD_LEVEL_DEBUG,
1473                                        "Added PMKSA cache entry");
1474                 }
1475                 break;
1476         case RADIUS_CODE_ACCESS_REJECT:
1477                 sm->eap_if->aaaFail = TRUE;
1478                 override_eapReq = 1;
1479                 break;
1480         case RADIUS_CODE_ACCESS_CHALLENGE:
1481                 sm->eap_if->aaaEapReq = TRUE;
1482                 if (session_timeout_set) {
1483                         /* RFC 2869, Ch. 2.3.2; RFC 3580, Ch. 3.17 */
1484                         sm->eap_if->aaaMethodTimeout = session_timeout;
1485                         hostapd_logger(hapd, sm->addr,
1486                                        HOSTAPD_MODULE_IEEE8021X,
1487                                        HOSTAPD_LEVEL_DEBUG,
1488                                        "using EAP timeout of %d seconds (from "
1489                                        "RADIUS)",
1490                                        sm->eap_if->aaaMethodTimeout);
1491                 } else {
1492                         /*
1493                          * Use dynamic retransmission behavior per EAP
1494                          * specification.
1495                          */
1496                         sm->eap_if->aaaMethodTimeout = 0;
1497                 }
1498                 break;
1499         }
1500
1501         ieee802_1x_decapsulate_radius(hapd, sta);
1502         if (override_eapReq)
1503                 sm->eap_if->aaaEapReq = FALSE;
1504
1505         eapol_auth_step(sm);
1506
1507         return RADIUS_RX_QUEUED;
1508 }
1509 #endif /* CONFIG_NO_RADIUS */
1510
1511
1512 void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta)
1513 {
1514         struct eapol_state_machine *sm = sta->eapol_sm;
1515         if (sm == NULL)
1516                 return;
1517
1518         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1519                        HOSTAPD_LEVEL_DEBUG, "aborting authentication");
1520
1521 #ifndef CONFIG_NO_RADIUS
1522         radius_msg_free(sm->last_recv_radius);
1523         sm->last_recv_radius = NULL;
1524 #endif /* CONFIG_NO_RADIUS */
1525
1526         if (sm->eap_if->eapTimeout) {
1527                 /*
1528                  * Disconnect the STA since it did not reply to the last EAP
1529                  * request and we cannot continue EAP processing (EAP-Failure
1530                  * could only be sent if the EAP peer actually replied).
1531                  */
1532                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "EAP Timeout, STA " MACSTR,
1533                         MAC2STR(sta->addr));
1534
1535                 sm->eap_if->portEnabled = FALSE;
1536                 ap_sta_disconnect(hapd, sta, sta->addr,
1537                                   WLAN_REASON_PREV_AUTH_NOT_VALID);
1538         }
1539 }
1540
1541
1542 static int ieee802_1x_rekey_broadcast(struct hostapd_data *hapd)
1543 {
1544         struct eapol_authenticator *eapol = hapd->eapol_auth;
1545
1546         if (hapd->conf->default_wep_key_len < 1)
1547                 return 0;
1548
1549         os_free(eapol->default_wep_key);
1550         eapol->default_wep_key = os_malloc(hapd->conf->default_wep_key_len);
1551         if (eapol->default_wep_key == NULL ||
1552             random_get_bytes(eapol->default_wep_key,
1553                              hapd->conf->default_wep_key_len)) {
1554                 printf("Could not generate random WEP key.\n");
1555                 os_free(eapol->default_wep_key);
1556                 eapol->default_wep_key = NULL;
1557                 return -1;
1558         }
1559
1560         wpa_hexdump_key(MSG_DEBUG, "IEEE 802.1X: New default WEP key",
1561                         eapol->default_wep_key,
1562                         hapd->conf->default_wep_key_len);
1563
1564         return 0;
1565 }
1566
1567
1568 static int ieee802_1x_sta_key_available(struct hostapd_data *hapd,
1569                                         struct sta_info *sta, void *ctx)
1570 {
1571         if (sta->eapol_sm) {
1572                 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1573                 eapol_auth_step(sta->eapol_sm);
1574         }
1575         return 0;
1576 }
1577
1578
1579 static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx)
1580 {
1581         struct hostapd_data *hapd = eloop_ctx;
1582         struct eapol_authenticator *eapol = hapd->eapol_auth;
1583
1584         if (eapol->default_wep_key_idx >= 3)
1585                 eapol->default_wep_key_idx =
1586                         hapd->conf->individual_wep_key_len > 0 ? 1 : 0;
1587         else
1588                 eapol->default_wep_key_idx++;
1589
1590         wpa_printf(MSG_DEBUG, "IEEE 802.1X: New default WEP key index %d",
1591                    eapol->default_wep_key_idx);
1592
1593         if (ieee802_1x_rekey_broadcast(hapd)) {
1594                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
1595                                HOSTAPD_LEVEL_WARNING, "failed to generate a "
1596                                "new broadcast key");
1597                 os_free(eapol->default_wep_key);
1598                 eapol->default_wep_key = NULL;
1599                 return;
1600         }
1601
1602         /* TODO: Could setup key for RX here, but change default TX keyid only
1603          * after new broadcast key has been sent to all stations. */
1604         if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
1605                                 broadcast_ether_addr,
1606                                 eapol->default_wep_key_idx, 1, NULL, 0,
1607                                 eapol->default_wep_key,
1608                                 hapd->conf->default_wep_key_len)) {
1609                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
1610                                HOSTAPD_LEVEL_WARNING, "failed to configure a "
1611                                "new broadcast key");
1612                 os_free(eapol->default_wep_key);
1613                 eapol->default_wep_key = NULL;
1614                 return;
1615         }
1616
1617         ap_for_each_sta(hapd, ieee802_1x_sta_key_available, NULL);
1618
1619         if (hapd->conf->wep_rekeying_period > 0) {
1620                 eloop_register_timeout(hapd->conf->wep_rekeying_period, 0,
1621                                        ieee802_1x_rekey, hapd, NULL);
1622         }
1623 }
1624
1625
1626 static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type,
1627                                   const u8 *data, size_t datalen)
1628 {
1629 #ifdef CONFIG_WPS
1630         struct sta_info *sta = sta_ctx;
1631
1632         if ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) ==
1633             WLAN_STA_MAYBE_WPS) {
1634                 const u8 *identity;
1635                 size_t identity_len;
1636                 struct eapol_state_machine *sm = sta->eapol_sm;
1637
1638                 identity = eap_get_identity(sm->eap, &identity_len);
1639                 if (identity &&
1640                     ((identity_len == WSC_ID_ENROLLEE_LEN &&
1641                       os_memcmp(identity, WSC_ID_ENROLLEE,
1642                                 WSC_ID_ENROLLEE_LEN) == 0) ||
1643                      (identity_len == WSC_ID_REGISTRAR_LEN &&
1644                       os_memcmp(identity, WSC_ID_REGISTRAR,
1645                                 WSC_ID_REGISTRAR_LEN) == 0))) {
1646                         wpa_printf(MSG_DEBUG, "WPS: WLAN_STA_MAYBE_WPS -> "
1647                                    "WLAN_STA_WPS");
1648                         sta->flags |= WLAN_STA_WPS;
1649                 }
1650         }
1651 #endif /* CONFIG_WPS */
1652
1653         ieee802_1x_send(ctx, sta_ctx, type, data, datalen);
1654 }
1655
1656
1657 static void ieee802_1x_aaa_send(void *ctx, void *sta_ctx,
1658                                 const u8 *data, size_t datalen)
1659 {
1660 #ifndef CONFIG_NO_RADIUS
1661         struct hostapd_data *hapd = ctx;
1662         struct sta_info *sta = sta_ctx;
1663
1664         ieee802_1x_encapsulate_radius(hapd, sta, data, datalen);
1665 #endif /* CONFIG_NO_RADIUS */
1666 }
1667
1668
1669 static void _ieee802_1x_finished(void *ctx, void *sta_ctx, int success,
1670                                  int preauth)
1671 {
1672         struct hostapd_data *hapd = ctx;
1673         struct sta_info *sta = sta_ctx;
1674         if (preauth)
1675                 rsn_preauth_finished(hapd, sta, success);
1676         else
1677                 ieee802_1x_finished(hapd, sta, success);
1678 }
1679
1680
1681 static int ieee802_1x_get_eap_user(void *ctx, const u8 *identity,
1682                                    size_t identity_len, int phase2,
1683                                    struct eap_user *user)
1684 {
1685         struct hostapd_data *hapd = ctx;
1686         const struct hostapd_eap_user *eap_user;
1687         int i;
1688
1689         eap_user = hostapd_get_eap_user(hapd->conf, identity,
1690                                         identity_len, phase2);
1691         if (eap_user == NULL)
1692                 return -1;
1693
1694         os_memset(user, 0, sizeof(*user));
1695         user->phase2 = phase2;
1696         for (i = 0; i < EAP_MAX_METHODS; i++) {
1697                 user->methods[i].vendor = eap_user->methods[i].vendor;
1698                 user->methods[i].method = eap_user->methods[i].method;
1699         }
1700
1701         if (eap_user->password) {
1702                 user->password = os_malloc(eap_user->password_len);
1703                 if (user->password == NULL)
1704                         return -1;
1705                 os_memcpy(user->password, eap_user->password,
1706                           eap_user->password_len);
1707                 user->password_len = eap_user->password_len;
1708                 user->password_hash = eap_user->password_hash;
1709         }
1710         user->force_version = eap_user->force_version;
1711         user->ttls_auth = eap_user->ttls_auth;
1712
1713         return 0;
1714 }
1715
1716
1717 static int ieee802_1x_sta_entry_alive(void *ctx, const u8 *addr)
1718 {
1719         struct hostapd_data *hapd = ctx;
1720         struct sta_info *sta;
1721         sta = ap_get_sta(hapd, addr);
1722         if (sta == NULL || sta->eapol_sm == NULL)
1723                 return 0;
1724         return 1;
1725 }
1726
1727
1728 static void ieee802_1x_logger(void *ctx, const u8 *addr,
1729                               eapol_logger_level level, const char *txt)
1730 {
1731 #ifndef CONFIG_NO_HOSTAPD_LOGGER
1732         struct hostapd_data *hapd = ctx;
1733         int hlevel;
1734
1735         switch (level) {
1736         case EAPOL_LOGGER_WARNING:
1737                 hlevel = HOSTAPD_LEVEL_WARNING;
1738                 break;
1739         case EAPOL_LOGGER_INFO:
1740                 hlevel = HOSTAPD_LEVEL_INFO;
1741                 break;
1742         case EAPOL_LOGGER_DEBUG:
1743         default:
1744                 hlevel = HOSTAPD_LEVEL_DEBUG;
1745                 break;
1746         }
1747
1748         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE8021X, hlevel, "%s",
1749                        txt);
1750 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
1751 }
1752
1753
1754 static void ieee802_1x_set_port_authorized(void *ctx, void *sta_ctx,
1755                                            int authorized)
1756 {
1757         struct hostapd_data *hapd = ctx;
1758         struct sta_info *sta = sta_ctx;
1759         ieee802_1x_set_sta_authorized(hapd, sta, authorized);
1760 }
1761
1762
1763 static void _ieee802_1x_abort_auth(void *ctx, void *sta_ctx)
1764 {
1765         struct hostapd_data *hapd = ctx;
1766         struct sta_info *sta = sta_ctx;
1767         ieee802_1x_abort_auth(hapd, sta);
1768 }
1769
1770
1771 static void _ieee802_1x_tx_key(void *ctx, void *sta_ctx)
1772 {
1773         struct hostapd_data *hapd = ctx;
1774         struct sta_info *sta = sta_ctx;
1775         ieee802_1x_tx_key(hapd, sta);
1776 }
1777
1778
1779 static void ieee802_1x_eapol_event(void *ctx, void *sta_ctx,
1780                                    enum eapol_event type)
1781 {
1782         /* struct hostapd_data *hapd = ctx; */
1783         struct sta_info *sta = sta_ctx;
1784         switch (type) {
1785         case EAPOL_AUTH_SM_CHANGE:
1786                 wpa_auth_sm_notify(sta->wpa_sm);
1787                 break;
1788         case EAPOL_AUTH_REAUTHENTICATE:
1789                 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
1790                 break;
1791         }
1792 }
1793
1794
1795 int ieee802_1x_init(struct hostapd_data *hapd)
1796 {
1797         int i;
1798         struct eapol_auth_config conf;
1799         struct eapol_auth_cb cb;
1800
1801         os_memset(&conf, 0, sizeof(conf));
1802         conf.ctx = hapd;
1803         conf.eap_reauth_period = hapd->conf->eap_reauth_period;
1804         conf.wpa = hapd->conf->wpa;
1805         conf.individual_wep_key_len = hapd->conf->individual_wep_key_len;
1806         conf.eap_server = hapd->conf->eap_server;
1807         conf.ssl_ctx = hapd->ssl_ctx;
1808         conf.msg_ctx = hapd->msg_ctx;
1809         conf.eap_sim_db_priv = hapd->eap_sim_db_priv;
1810         conf.eap_req_id_text = hapd->conf->eap_req_id_text;
1811         conf.eap_req_id_text_len = hapd->conf->eap_req_id_text_len;
1812         conf.pac_opaque_encr_key = hapd->conf->pac_opaque_encr_key;
1813         conf.eap_fast_a_id = hapd->conf->eap_fast_a_id;
1814         conf.eap_fast_a_id_len = hapd->conf->eap_fast_a_id_len;
1815         conf.eap_fast_a_id_info = hapd->conf->eap_fast_a_id_info;
1816         conf.eap_fast_prov = hapd->conf->eap_fast_prov;
1817         conf.pac_key_lifetime = hapd->conf->pac_key_lifetime;
1818         conf.pac_key_refresh_time = hapd->conf->pac_key_refresh_time;
1819         conf.eap_sim_aka_result_ind = hapd->conf->eap_sim_aka_result_ind;
1820         conf.tnc = hapd->conf->tnc;
1821         conf.wps = hapd->wps;
1822         conf.fragment_size = hapd->conf->fragment_size;
1823         conf.pwd_group = hapd->conf->pwd_group;
1824         conf.pbc_in_m1 = hapd->conf->pbc_in_m1;
1825
1826         os_memset(&cb, 0, sizeof(cb));
1827         cb.eapol_send = ieee802_1x_eapol_send;
1828         cb.aaa_send = ieee802_1x_aaa_send;
1829         cb.finished = _ieee802_1x_finished;
1830         cb.get_eap_user = ieee802_1x_get_eap_user;
1831         cb.sta_entry_alive = ieee802_1x_sta_entry_alive;
1832         cb.logger = ieee802_1x_logger;
1833         cb.set_port_authorized = ieee802_1x_set_port_authorized;
1834         cb.abort_auth = _ieee802_1x_abort_auth;
1835         cb.tx_key = _ieee802_1x_tx_key;
1836         cb.eapol_event = ieee802_1x_eapol_event;
1837
1838         hapd->eapol_auth = eapol_auth_init(&conf, &cb);
1839         if (hapd->eapol_auth == NULL)
1840                 return -1;
1841
1842         if ((hapd->conf->ieee802_1x || hapd->conf->wpa) &&
1843             hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1))
1844                 return -1;
1845
1846 #ifndef CONFIG_NO_RADIUS
1847         if (radius_client_register(hapd->radius, RADIUS_AUTH,
1848                                    ieee802_1x_receive_auth, hapd))
1849                 return -1;
1850 #endif /* CONFIG_NO_RADIUS */
1851
1852         if (hapd->conf->default_wep_key_len) {
1853                 for (i = 0; i < 4; i++)
1854                         hostapd_drv_set_key(hapd->conf->iface, hapd,
1855                                             WPA_ALG_NONE, NULL, i, 0, NULL, 0,
1856                                             NULL, 0);
1857
1858                 ieee802_1x_rekey(hapd, NULL);
1859
1860                 if (hapd->eapol_auth->default_wep_key == NULL)
1861                         return -1;
1862         }
1863
1864         return 0;
1865 }
1866
1867
1868 void ieee802_1x_deinit(struct hostapd_data *hapd)
1869 {
1870         eloop_cancel_timeout(ieee802_1x_rekey, hapd, NULL);
1871
1872         if (hapd->driver != NULL &&
1873             (hapd->conf->ieee802_1x || hapd->conf->wpa))
1874                 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
1875
1876         eapol_auth_deinit(hapd->eapol_auth);
1877         hapd->eapol_auth = NULL;
1878 }
1879
1880
1881 int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
1882                          const u8 *buf, size_t len, int ack)
1883 {
1884         struct ieee80211_hdr *hdr;
1885         u8 *pos;
1886         const unsigned char rfc1042_hdr[ETH_ALEN] =
1887                 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
1888
1889         if (sta == NULL)
1890                 return -1;
1891         if (len < sizeof(*hdr) + sizeof(rfc1042_hdr) + 2)
1892                 return 0;
1893
1894         hdr = (struct ieee80211_hdr *) buf;
1895         pos = (u8 *) (hdr + 1);
1896         if (os_memcmp(pos, rfc1042_hdr, sizeof(rfc1042_hdr)) != 0)
1897                 return 0;
1898         pos += sizeof(rfc1042_hdr);
1899         if (WPA_GET_BE16(pos) != ETH_P_PAE)
1900                 return 0;
1901         pos += 2;
1902
1903         return ieee802_1x_eapol_tx_status(hapd, sta, pos, buf + len - pos,
1904                                           ack);
1905 }
1906
1907
1908 int ieee802_1x_eapol_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
1909                                const u8 *buf, int len, int ack)
1910 {
1911         const struct ieee802_1x_hdr *xhdr =
1912                 (const struct ieee802_1x_hdr *) buf;
1913         const u8 *pos = buf + sizeof(*xhdr);
1914         struct ieee802_1x_eapol_key *key;
1915
1916         if (len < (int) sizeof(*xhdr))
1917                 return 0;
1918         wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR " TX status - version=%d "
1919                    "type=%d length=%d - ack=%d",
1920                    MAC2STR(sta->addr), xhdr->version, xhdr->type,
1921                    be_to_host16(xhdr->length), ack);
1922
1923         if (xhdr->type != IEEE802_1X_TYPE_EAPOL_KEY)
1924                 return 0;
1925
1926         if (pos + sizeof(struct wpa_eapol_key) <= buf + len) {
1927                 const struct wpa_eapol_key *wpa;
1928                 wpa = (const struct wpa_eapol_key *) pos;
1929                 if (wpa->type == EAPOL_KEY_TYPE_RSN ||
1930                     wpa->type == EAPOL_KEY_TYPE_WPA)
1931                         wpa_auth_eapol_key_tx_status(hapd->wpa_auth,
1932                                                      sta->wpa_sm, ack);
1933         }
1934
1935         /* EAPOL EAP-Packet packets are eventually re-sent by either Supplicant
1936          * or Authenticator state machines, but EAPOL-Key packets are not
1937          * retransmitted in case of failure. Try to re-send failed EAPOL-Key
1938          * packets couple of times because otherwise STA keys become
1939          * unsynchronized with AP. */
1940         if (!ack && pos + sizeof(*key) <= buf + len) {
1941                 key = (struct ieee802_1x_eapol_key *) pos;
1942                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1943                                HOSTAPD_LEVEL_DEBUG, "did not Ack EAPOL-Key "
1944                                "frame (%scast index=%d)",
1945                                key->key_index & BIT(7) ? "uni" : "broad",
1946                                key->key_index & ~BIT(7));
1947                 /* TODO: re-send EAPOL-Key couple of times (with short delay
1948                  * between them?). If all attempt fail, report error and
1949                  * deauthenticate STA so that it will get new keys when
1950                  * authenticating again (e.g., after returning in range).
1951                  * Separate limit/transmit state needed both for unicast and
1952                  * broadcast keys(?) */
1953         }
1954         /* TODO: could move unicast key configuration from ieee802_1x_tx_key()
1955          * to here and change the key only if the EAPOL-Key packet was Acked.
1956          */
1957
1958         return 1;
1959 }
1960
1961
1962 u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len)
1963 {
1964         if (sm == NULL || sm->identity == NULL)
1965                 return NULL;
1966
1967         *len = sm->identity_len;
1968         return sm->identity;
1969 }
1970
1971
1972 u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len,
1973                                  int idx)
1974 {
1975         if (sm == NULL || sm->radius_class.attr == NULL ||
1976             idx >= (int) sm->radius_class.count)
1977                 return NULL;
1978
1979         *len = sm->radius_class.attr[idx].len;
1980         return sm->radius_class.attr[idx].data;
1981 }
1982
1983
1984 struct wpabuf * ieee802_1x_get_radius_cui(struct eapol_state_machine *sm)
1985 {
1986         if (sm == NULL)
1987                 return NULL;
1988         return sm->radius_cui;
1989 }
1990
1991
1992 const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len)
1993 {
1994         *len = 0;
1995         if (sm == NULL)
1996                 return NULL;
1997
1998         *len = sm->eap_if->eapKeyDataLen;
1999         return sm->eap_if->eapKeyData;
2000 }
2001
2002
2003 void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm,
2004                                     int enabled)
2005 {
2006         if (sm == NULL)
2007                 return;
2008         sm->eap_if->portEnabled = enabled ? TRUE : FALSE;
2009         eapol_auth_step(sm);
2010 }
2011
2012
2013 void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm,
2014                                   int valid)
2015 {
2016         if (sm == NULL)
2017                 return;
2018         sm->portValid = valid ? TRUE : FALSE;
2019         eapol_auth_step(sm);
2020 }
2021
2022
2023 void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, int pre_auth)
2024 {
2025         if (sm == NULL)
2026                 return;
2027         if (pre_auth)
2028                 sm->flags |= EAPOL_SM_PREAUTH;
2029         else
2030                 sm->flags &= ~EAPOL_SM_PREAUTH;
2031 }
2032
2033
2034 static const char * bool_txt(Boolean bool)
2035 {
2036         return bool ? "TRUE" : "FALSE";
2037 }
2038
2039
2040 int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
2041 {
2042         /* TODO */
2043         return 0;
2044 }
2045
2046
2047 int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
2048                            char *buf, size_t buflen)
2049 {
2050         int len = 0, ret;
2051         struct eapol_state_machine *sm = sta->eapol_sm;
2052         struct os_time t;
2053
2054         if (sm == NULL)
2055                 return 0;
2056
2057         ret = os_snprintf(buf + len, buflen - len,
2058                           "dot1xPaePortNumber=%d\n"
2059                           "dot1xPaePortProtocolVersion=%d\n"
2060                           "dot1xPaePortCapabilities=1\n"
2061                           "dot1xPaePortInitialize=%d\n"
2062                           "dot1xPaePortReauthenticate=FALSE\n",
2063                           sta->aid,
2064                           EAPOL_VERSION,
2065                           sm->initialize);
2066         if (ret < 0 || (size_t) ret >= buflen - len)
2067                 return len;
2068         len += ret;
2069
2070         /* dot1xAuthConfigTable */
2071         ret = os_snprintf(buf + len, buflen - len,
2072                           "dot1xAuthPaeState=%d\n"
2073                           "dot1xAuthBackendAuthState=%d\n"
2074                           "dot1xAuthAdminControlledDirections=%d\n"
2075                           "dot1xAuthOperControlledDirections=%d\n"
2076                           "dot1xAuthAuthControlledPortStatus=%d\n"
2077                           "dot1xAuthAuthControlledPortControl=%d\n"
2078                           "dot1xAuthQuietPeriod=%u\n"
2079                           "dot1xAuthServerTimeout=%u\n"
2080                           "dot1xAuthReAuthPeriod=%u\n"
2081                           "dot1xAuthReAuthEnabled=%s\n"
2082                           "dot1xAuthKeyTxEnabled=%s\n",
2083                           sm->auth_pae_state + 1,
2084                           sm->be_auth_state + 1,
2085                           sm->adminControlledDirections,
2086                           sm->operControlledDirections,
2087                           sm->authPortStatus,
2088                           sm->portControl,
2089                           sm->quietPeriod,
2090                           sm->serverTimeout,
2091                           sm->reAuthPeriod,
2092                           bool_txt(sm->reAuthEnabled),
2093                           bool_txt(sm->keyTxEnabled));
2094         if (ret < 0 || (size_t) ret >= buflen - len)
2095                 return len;
2096         len += ret;
2097
2098         /* dot1xAuthStatsTable */
2099         ret = os_snprintf(buf + len, buflen - len,
2100                           "dot1xAuthEapolFramesRx=%u\n"
2101                           "dot1xAuthEapolFramesTx=%u\n"
2102                           "dot1xAuthEapolStartFramesRx=%u\n"
2103                           "dot1xAuthEapolLogoffFramesRx=%u\n"
2104                           "dot1xAuthEapolRespIdFramesRx=%u\n"
2105                           "dot1xAuthEapolRespFramesRx=%u\n"
2106                           "dot1xAuthEapolReqIdFramesTx=%u\n"
2107                           "dot1xAuthEapolReqFramesTx=%u\n"
2108                           "dot1xAuthInvalidEapolFramesRx=%u\n"
2109                           "dot1xAuthEapLengthErrorFramesRx=%u\n"
2110                           "dot1xAuthLastEapolFrameVersion=%u\n"
2111                           "dot1xAuthLastEapolFrameSource=" MACSTR "\n",
2112                           sm->dot1xAuthEapolFramesRx,
2113                           sm->dot1xAuthEapolFramesTx,
2114                           sm->dot1xAuthEapolStartFramesRx,
2115                           sm->dot1xAuthEapolLogoffFramesRx,
2116                           sm->dot1xAuthEapolRespIdFramesRx,
2117                           sm->dot1xAuthEapolRespFramesRx,
2118                           sm->dot1xAuthEapolReqIdFramesTx,
2119                           sm->dot1xAuthEapolReqFramesTx,
2120                           sm->dot1xAuthInvalidEapolFramesRx,
2121                           sm->dot1xAuthEapLengthErrorFramesRx,
2122                           sm->dot1xAuthLastEapolFrameVersion,
2123                           MAC2STR(sm->addr));
2124         if (ret < 0 || (size_t) ret >= buflen - len)
2125                 return len;
2126         len += ret;
2127
2128         /* dot1xAuthDiagTable */
2129         ret = os_snprintf(buf + len, buflen - len,
2130                           "dot1xAuthEntersConnecting=%u\n"
2131                           "dot1xAuthEapLogoffsWhileConnecting=%u\n"
2132                           "dot1xAuthEntersAuthenticating=%u\n"
2133                           "dot1xAuthAuthSuccessesWhileAuthenticating=%u\n"
2134                           "dot1xAuthAuthTimeoutsWhileAuthenticating=%u\n"
2135                           "dot1xAuthAuthFailWhileAuthenticating=%u\n"
2136                           "dot1xAuthAuthEapStartsWhileAuthenticating=%u\n"
2137                           "dot1xAuthAuthEapLogoffWhileAuthenticating=%u\n"
2138                           "dot1xAuthAuthReauthsWhileAuthenticated=%u\n"
2139                           "dot1xAuthAuthEapStartsWhileAuthenticated=%u\n"
2140                           "dot1xAuthAuthEapLogoffWhileAuthenticated=%u\n"
2141                           "dot1xAuthBackendResponses=%u\n"
2142                           "dot1xAuthBackendAccessChallenges=%u\n"
2143                           "dot1xAuthBackendOtherRequestsToSupplicant=%u\n"
2144                           "dot1xAuthBackendAuthSuccesses=%u\n"
2145                           "dot1xAuthBackendAuthFails=%u\n",
2146                           sm->authEntersConnecting,
2147                           sm->authEapLogoffsWhileConnecting,
2148                           sm->authEntersAuthenticating,
2149                           sm->authAuthSuccessesWhileAuthenticating,
2150                           sm->authAuthTimeoutsWhileAuthenticating,
2151                           sm->authAuthFailWhileAuthenticating,
2152                           sm->authAuthEapStartsWhileAuthenticating,
2153                           sm->authAuthEapLogoffWhileAuthenticating,
2154                           sm->authAuthReauthsWhileAuthenticated,
2155                           sm->authAuthEapStartsWhileAuthenticated,
2156                           sm->authAuthEapLogoffWhileAuthenticated,
2157                           sm->backendResponses,
2158                           sm->backendAccessChallenges,
2159                           sm->backendOtherRequestsToSupplicant,
2160                           sm->backendAuthSuccesses,
2161                           sm->backendAuthFails);
2162         if (ret < 0 || (size_t) ret >= buflen - len)
2163                 return len;
2164         len += ret;
2165
2166         /* dot1xAuthSessionStatsTable */
2167         os_get_time(&t);
2168         ret = os_snprintf(buf + len, buflen - len,
2169                           /* TODO: dot1xAuthSessionOctetsRx */
2170                           /* TODO: dot1xAuthSessionOctetsTx */
2171                           /* TODO: dot1xAuthSessionFramesRx */
2172                           /* TODO: dot1xAuthSessionFramesTx */
2173                           "dot1xAuthSessionId=%08X-%08X\n"
2174                           "dot1xAuthSessionAuthenticMethod=%d\n"
2175                           "dot1xAuthSessionTime=%u\n"
2176                           "dot1xAuthSessionTerminateCause=999\n"
2177                           "dot1xAuthSessionUserName=%s\n",
2178                           sta->acct_session_id_hi, sta->acct_session_id_lo,
2179                           (wpa_key_mgmt_wpa_ieee8021x(
2180                                    wpa_auth_sta_key_mgmt(sta->wpa_sm))) ?
2181                           1 : 2,
2182                           (unsigned int) (t.sec - sta->acct_session_start),
2183                           sm->identity);
2184         if (ret < 0 || (size_t) ret >= buflen - len)
2185                 return len;
2186         len += ret;
2187
2188         return len;
2189 }
2190
2191
2192 static void ieee802_1x_finished(struct hostapd_data *hapd,
2193                                 struct sta_info *sta, int success)
2194 {
2195         const u8 *key;
2196         size_t len;
2197         /* TODO: get PMKLifetime from WPA parameters */
2198         static const int dot11RSNAConfigPMKLifetime = 43200;
2199
2200         key = ieee802_1x_get_key(sta->eapol_sm, &len);
2201         if (success && key && len >= PMK_LEN &&
2202             wpa_auth_pmksa_add(sta->wpa_sm, key, dot11RSNAConfigPMKLifetime,
2203                                sta->eapol_sm) == 0) {
2204                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
2205                                HOSTAPD_LEVEL_DEBUG,
2206                                "Added PMKSA cache entry (IEEE 802.1X)");
2207         }
2208
2209         if (!success) {
2210                 /*
2211                  * Many devices require deauthentication after WPS provisioning
2212                  * and some may not be be able to do that themselves, so
2213                  * disconnect the client here. In addition, this may also
2214                  * benefit IEEE 802.1X/EAPOL authentication cases, too since
2215                  * the EAPOL PAE state machine would remain in HELD state for
2216                  * considerable amount of time and some EAP methods, like
2217                  * EAP-FAST with anonymous provisioning, may require another
2218                  * EAPOL authentication to be started to complete connection.
2219                  */
2220                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "IEEE 802.1X: Force "
2221                         "disconnection after EAP-Failure");
2222                 /* Add a small sleep to increase likelihood of previously
2223                  * requested EAP-Failure TX getting out before this should the
2224                  * driver reorder operations.
2225                  */
2226                 os_sleep(0, 10000);
2227                 ap_sta_disconnect(hapd, sta, sta->addr,
2228                                   WLAN_REASON_IEEE_802_1X_AUTH_FAILED);
2229         }
2230 }