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                 accounting_sta_start(hapd, sta);
 104 }
 105
 106
 107 static void ieee802_1x_tx_key_one(struct hostapd_data *hapd,
 108                                   struct sta_info *sta,
 109                                   int idx, int broadcast,
 110                                   u8 *key_data, size_t key_len)
 111 {
 112         u8 *buf, *ekey;
 113         struct ieee802_1x_hdr *hdr;
 114         struct ieee802_1x_eapol_key *key;
 115         size_t len, ekey_len;
 116         struct eapol_state_machine *sm = sta->eapol_sm;
 117
 118         if (sm == NULL)
 119                 return;
 120
 121         len = sizeof(*key) + key_len;
 122         buf = os_zalloc(sizeof(*hdr) + len);
 123         if (buf == NULL)
 124                 return;
 125
 126         hdr = (struct ieee802_1x_hdr *) buf;
 127         key = (struct ieee802_1x_eapol_key *) (hdr + 1);
 128         key->type = EAPOL_KEY_TYPE_RC4;
 129         WPA_PUT_BE16(key->key_length, key_len);
 130         wpa_get_ntp_timestamp(key->replay_counter);
 131
 132         if (random_get_bytes(key->key_iv, sizeof(key->key_iv))) {
 133                 wpa_printf(MSG_ERROR, "Could not get random numbers");
 134                 os_free(buf);
 135                 return;
 136         }
 137
 138         key->key_index = idx | (broadcast ? 0 : BIT(7));
 139         if (hapd->conf->eapol_key_index_workaround) {
 140                 /* According to some information, WinXP Supplicant seems to
 141                  * interpret bit7 as an indication whether the key is to be
 142                  * activated, so make it possible to enable workaround that
 143                  * sets this bit for all keys. */
 144                 key->key_index |= BIT(7);
 145         }
 146
 147         /* Key is encrypted using "Key-IV + MSK[0..31]" as the RC4-key and
 148          * MSK[32..63] is used to sign the message. */
 149         if (sm->eap_if->eapKeyData == NULL || sm->eap_if->eapKeyDataLen < 64) {
 150                 wpa_printf(MSG_ERROR, "No eapKeyData available for encrypting "
 151                            "and signing EAPOL-Key");
 152                 os_free(buf);
 153                 return;
 154         }
 155         os_memcpy((u8 *) (key + 1), key_data, key_len);
 156         ekey_len = sizeof(key->key_iv) + 32;
 157         ekey = os_malloc(ekey_len);
 158         if (ekey == NULL) {
 159                 wpa_printf(MSG_ERROR, "Could not encrypt key");
 160                 os_free(buf);
 161                 return;
 162         }
 163         os_memcpy(ekey, key->key_iv, sizeof(key->key_iv));
 164         os_memcpy(ekey + sizeof(key->key_iv), sm->eap_if->eapKeyData, 32);
 165         rc4_skip(ekey, ekey_len, 0, (u8 *) (key + 1), key_len);
 166         os_free(ekey);
 167
 168         /* This header is needed here for HMAC-MD5, but it will be regenerated
 169          * in ieee802_1x_send() */
 170         hdr->version = hapd->conf->eapol_version;
 171         hdr->type = IEEE802_1X_TYPE_EAPOL_KEY;
 172         hdr->length = host_to_be16(len);
 173         hmac_md5(sm->eap_if->eapKeyData + 32, 32, buf, sizeof(*hdr) + len,
 174                  key->key_signature);
 175
 176         wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key to " MACSTR
 177                    " (%s index=%d)", MAC2STR(sm->addr),
 178                    broadcast ? "broadcast" : "unicast", idx);
 179         ieee802_1x_send(hapd, sta, IEEE802_1X_TYPE_EAPOL_KEY, (u8 *) key, len);
 180         if (sta->eapol_sm)
 181                 sta->eapol_sm->dot1xAuthEapolFramesTx++;
 182         os_free(buf);
 183 }
 184
 185
 186 #ifndef CONFIG_NO_VLAN
 187 static struct hostapd_wep_keys *
 188 ieee802_1x_group_alloc(struct hostapd_data *hapd, const char *ifname)
 189 {
 190         struct hostapd_wep_keys *key;
 191
 192         key = os_zalloc(sizeof(*key));
 193         if (key == NULL)
 194                 return NULL;
 195
 196         key->default_len = hapd->conf->default_wep_key_len;
 197
 198         if (key->idx >= hapd->conf->broadcast_key_idx_max ||
 199             key->idx < hapd->conf->broadcast_key_idx_min)
 200                 key->idx = hapd->conf->broadcast_key_idx_min;
 201         else
 202                 key->idx++;
 203
 204         if (!key->key[key->idx])
 205                 key->key[key->idx] = os_malloc(key->default_len);
 206         if (key->key[key->idx] == NULL ||
 207             random_get_bytes(key->key[key->idx], key->default_len)) {
 208                 printf("Could not generate random WEP key (dynamic VLAN).\n");
 209                 os_free(key->key[key->idx]);
 210                 key->key[key->idx] = NULL;
 211                 os_free(key);
 212                 return NULL;
 213         }
 214         key->len[key->idx] = key->default_len;
 215
 216         wpa_printf(MSG_DEBUG, "%s: Default WEP idx %d for dynamic VLAN\n",
 217                    ifname, key->idx);
 218         wpa_hexdump_key(MSG_DEBUG, "Default WEP key (dynamic VLAN)",
 219                         key->key[key->idx], key->len[key->idx]);
 220
 221         if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_WEP,
 222                                 broadcast_ether_addr, key->idx, 1,
 223                                 NULL, 0, key->key[key->idx],
 224                                 key->len[key->idx]))
 225                 printf("Could not set dynamic VLAN WEP encryption key.\n");
 226
 227         hostapd_set_drv_ieee8021x(hapd, ifname, 1);
 228
 229         return key;
 230 }
 231
 232
 233 static struct hostapd_wep_keys *
 234 ieee802_1x_get_group(struct hostapd_data *hapd, struct hostapd_ssid *ssid,
 235                      size_t vlan_id)
 236 {
 237         const char *ifname;
 238
 239         if (vlan_id == 0)
 240                 return &ssid->wep;
 241
 242         if (vlan_id <= ssid->max_dyn_vlan_keys && ssid->dyn_vlan_keys &&
 243             ssid->dyn_vlan_keys[vlan_id])
 244                 return ssid->dyn_vlan_keys[vlan_id];
 245
 246         wpa_printf(MSG_DEBUG, "IEEE 802.1X: Creating new group "
 247                    "state machine for VLAN ID %lu",
 248                    (unsigned long) vlan_id);
 249
 250         ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
 251         if (ifname == NULL) {
 252                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Unknown VLAN ID %lu - "
 253                            "cannot create group key state machine",
 254                            (unsigned long) vlan_id);
 255                 return NULL;
 256         }
 257
 258         if (ssid->dyn_vlan_keys == NULL) {
 259                 int size = (vlan_id + 1) * sizeof(ssid->dyn_vlan_keys[0]);
 260                 ssid->dyn_vlan_keys = os_zalloc(size);
 261                 if (ssid->dyn_vlan_keys == NULL)
 262                         return NULL;
 263                 ssid->max_dyn_vlan_keys = vlan_id;
 264         }
 265
 266         if (ssid->max_dyn_vlan_keys < vlan_id) {
 267                 struct hostapd_wep_keys **na;
 268                 int size = (vlan_id + 1) * sizeof(ssid->dyn_vlan_keys[0]);
 269                 na = os_realloc(ssid->dyn_vlan_keys, size);
 270                 if (na == NULL)
 271                         return NULL;
 272                 ssid->dyn_vlan_keys = na;
 273                 os_memset(&ssid->dyn_vlan_keys[ssid->max_dyn_vlan_keys + 1], 0,
 274                           (vlan_id - ssid->max_dyn_vlan_keys) *
 275                           sizeof(ssid->dyn_vlan_keys[0]));
 276                 ssid->max_dyn_vlan_keys = vlan_id;
 277         }
 278
 279         ssid->dyn_vlan_keys[vlan_id] = ieee802_1x_group_alloc(hapd, ifname);
 280
 281         return ssid->dyn_vlan_keys[vlan_id];
 282 }
 283 #endif /* CONFIG_NO_VLAN */
 284
 285
 286 void ieee802_1x_tx_key(struct hostapd_data *hapd, struct sta_info *sta)
 287 {
 288         struct eapol_authenticator *eapol = hapd->eapol_auth;
 289         struct eapol_state_machine *sm = sta->eapol_sm;
 290 #ifndef CONFIG_NO_VLAN
 291         struct hostapd_wep_keys *key = NULL;
 292         int vlan_id;
 293 #endif /* CONFIG_NO_VLAN */
 294
 295         if (sm == NULL || !sm->eap_if->eapKeyData)
 296                 return;
 297
 298         wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key(s) to " MACSTR,
 299                    MAC2STR(sta->addr));
 300
 301 #ifndef CONFIG_NO_VLAN
 302         vlan_id = sta->vlan_id;
 303         if (vlan_id < 0 || vlan_id > MAX_VLAN_ID)
 304                 vlan_id = 0;
 305
 306         if (vlan_id) {
 307                 key = ieee802_1x_get_group(hapd, sta->ssid, vlan_id);
 308                 if (key && key->key[key->idx])
 309                         ieee802_1x_tx_key_one(hapd, sta, key->idx, 1,
 310                                               key->key[key->idx],
 311                                               key->len[key->idx]);
 312         } else
 313 #endif /* CONFIG_NO_VLAN */
 314         if (eapol->default_wep_key) {
 315                 ieee802_1x_tx_key_one(hapd, sta, eapol->default_wep_key_idx, 1,
 316                                       eapol->default_wep_key,
 317                                       hapd->conf->default_wep_key_len);
 318         }
 319
 320         if (hapd->conf->individual_wep_key_len > 0) {
 321                 u8 *ikey;
 322                 ikey = os_malloc(hapd->conf->individual_wep_key_len);
 323                 if (ikey == NULL ||
 324                     random_get_bytes(ikey, hapd->conf->individual_wep_key_len))
 325                 {
 326                         wpa_printf(MSG_ERROR, "Could not generate random "
 327                                    "individual WEP key.");
 328                         os_free(ikey);
 329                         return;
 330                 }
 331
 332                 wpa_hexdump_key(MSG_DEBUG, "Individual WEP key",
 333                                 ikey, hapd->conf->individual_wep_key_len);
 334
 335                 ieee802_1x_tx_key_one(hapd, sta, 0, 0, ikey,
 336                                       hapd->conf->individual_wep_key_len);
 337
 338                 /* TODO: set encryption in TX callback, i.e., only after STA
 339                  * has ACKed EAPOL-Key frame */
 340                 if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
 341                                         sta->addr, 0, 1, NULL, 0, ikey,
 342                                         hapd->conf->individual_wep_key_len)) {
 343                         wpa_printf(MSG_ERROR, "Could not set individual WEP "
 344                                    "encryption.");
 345                 }
 346
 347                 os_free(ikey);
 348         }
 349 }
 350
 351
 352 const char *radius_mode_txt(struct hostapd_data *hapd)
 353 {
 354         switch (hapd->iface->conf->hw_mode) {
 355         case HOSTAPD_MODE_IEEE80211A:
 356                 return "802.11a";
 357         case HOSTAPD_MODE_IEEE80211G:
 358                 return "802.11g";
 359         case HOSTAPD_MODE_IEEE80211B:
 360         default:
 361                 return "802.11b";
 362         }
 363 }
 364
 365
 366 int radius_sta_rate(struct hostapd_data *hapd, struct sta_info *sta)
 367 {
 368         int i;
 369         u8 rate = 0;
 370
 371         for (i = 0; i < sta->supported_rates_len; i++)
 372                 if ((sta->supported_rates[i] & 0x7f) > rate)
 373                         rate = sta->supported_rates[i] & 0x7f;
 374
 375         return rate;
 376 }
 377
 378
 379 #ifndef CONFIG_NO_RADIUS
 380 static void ieee802_1x_learn_identity(struct hostapd_data *hapd,
 381                                       struct eapol_state_machine *sm,
 382                                       const u8 *eap, size_t len)
 383 {
 384         const u8 *identity;
 385         size_t identity_len;
 386
 387         if (len <= sizeof(struct eap_hdr) ||
 388             eap[sizeof(struct eap_hdr)] != EAP_TYPE_IDENTITY)
 389                 return;
 390
 391         identity = eap_get_identity(sm->eap, &identity_len);
 392         if (identity == NULL)
 393                 return;
 394
 395         /* Save station identity for future RADIUS packets */
 396         os_free(sm->identity);
 397         sm->identity = os_malloc(identity_len + 1);
 398         if (sm->identity == NULL) {
 399                 sm->identity_len = 0;
 400                 return;
 401         }
 402
 403         os_memcpy(sm->identity, identity, identity_len);
 404         sm->identity_len = identity_len;
 405         sm->identity[identity_len] = '\0';
 406         hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
 407                        HOSTAPD_LEVEL_DEBUG, "STA identity '%s'", sm->identity);
 408         sm->dot1xAuthEapolRespIdFramesRx++;
 409 }
 410
 411
 412 static int add_common_radius_sta_attr(struct hostapd_data *hapd,
 413                                       struct hostapd_radius_attr *req_attr,
 414                                       struct sta_info *sta,
 415                                       struct radius_msg *msg)
 416 {
 417         char buf[128];
 418
 419         if (!hostapd_config_get_radius_attr(req_attr,
 420                                             RADIUS_ATTR_NAS_PORT) &&
 421             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT, sta->aid)) {
 422                 wpa_printf(MSG_ERROR, "Could not add NAS-Port");
 423                 return -1;
 424         }
 425
 426         os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
 427                     MAC2STR(sta->addr));
 428         buf[sizeof(buf) - 1] = '\0';
 429         if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
 430                                  (u8 *) buf, os_strlen(buf))) {
 431                 wpa_printf(MSG_ERROR, "Could not add Calling-Station-Id");
 432                 return -1;
 433         }
 434
 435         if (sta->flags & WLAN_STA_PREAUTH) {
 436                 os_strlcpy(buf, "IEEE 802.11i Pre-Authentication",
 437                            sizeof(buf));
 438         } else {
 439                 os_snprintf(buf, sizeof(buf), "CONNECT %d%sMbps %s",
 440                             radius_sta_rate(hapd, sta) / 2,
 441                             (radius_sta_rate(hapd, sta) & 1) ? ".5" : "",
 442                             radius_mode_txt(hapd));
 443                 buf[sizeof(buf) - 1] = '\0';
 444         }
 445         if (!hostapd_config_get_radius_attr(req_attr,
 446                                             RADIUS_ATTR_CONNECT_INFO) &&
 447             !radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
 448                                  (u8 *) buf, os_strlen(buf))) {
 449                 wpa_printf(MSG_ERROR, "Could not add Connect-Info");
 450                 return -1;
 451         }
 452
 453         return 0;
 454 }
 455
 456
 457 int add_common_radius_attr(struct hostapd_data *hapd,
 458                            struct hostapd_radius_attr *req_attr,
 459                            struct sta_info *sta,
 460                            struct radius_msg *msg)
 461 {
 462         char buf[128];
 463         struct hostapd_radius_attr *attr;
 464
 465         if (!hostapd_config_get_radius_attr(req_attr,
 466                                             RADIUS_ATTR_NAS_IP_ADDRESS) &&
 467             hapd->conf->own_ip_addr.af == AF_INET &&
 468             !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
 469                                  (u8 *) &hapd->conf->own_ip_addr.u.v4, 4)) {
 470                 wpa_printf(MSG_ERROR, "Could not add NAS-IP-Address");
 471                 return -1;
 472         }
 473
 474 #ifdef CONFIG_IPV6
 475         if (!hostapd_config_get_radius_attr(req_attr,
 476                                             RADIUS_ATTR_NAS_IPV6_ADDRESS) &&
 477             hapd->conf->own_ip_addr.af == AF_INET6 &&
 478             !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IPV6_ADDRESS,
 479                                  (u8 *) &hapd->conf->own_ip_addr.u.v6, 16)) {
 480                 wpa_printf(MSG_ERROR, "Could not add NAS-IPv6-Address");
 481                 return -1;
 482         }
 483 #endif /* CONFIG_IPV6 */
 484
 485         if (!hostapd_config_get_radius_attr(req_attr,
 486                                             RADIUS_ATTR_NAS_IDENTIFIER) &&
 487             hapd->conf->nas_identifier &&
 488             !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IDENTIFIER,
 489                                  (u8 *) hapd->conf->nas_identifier,
 490                                  os_strlen(hapd->conf->nas_identifier))) {
 491                 wpa_printf(MSG_ERROR, "Could not add NAS-Identifier");
 492                 return -1;
 493         }
 494
 495         os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT ":%s",
 496                     MAC2STR(hapd->own_addr),
 497                     wpa_ssid_txt(hapd->conf->ssid.ssid,
 498                                  hapd->conf->ssid.ssid_len));
 499         buf[sizeof(buf) - 1] = '\0';
 500         if (!hostapd_config_get_radius_attr(req_attr,
 501                                             RADIUS_ATTR_CALLED_STATION_ID) &&
 502             !radius_msg_add_attr(msg, RADIUS_ATTR_CALLED_STATION_ID,
 503                                  (u8 *) buf, os_strlen(buf))) {
 504                 wpa_printf(MSG_ERROR, "Could not add Called-Station-Id");
 505                 return -1;
 506         }
 507
 508         if (!hostapd_config_get_radius_attr(req_attr,
 509                                             RADIUS_ATTR_NAS_PORT_TYPE) &&
 510             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
 511                                        RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
 512                 wpa_printf(MSG_ERROR, "Could not add NAS-Port-Type");
 513                 return -1;
 514         }
 515
 516         if (sta && add_common_radius_sta_attr(hapd, req_attr, sta, msg) < 0)
 517                 return -1;
 518
 519         for (attr = req_attr; attr; attr = attr->next) {
 520                 if (!radius_msg_add_attr(msg, attr->type,
 521                                          wpabuf_head(attr->val),
 522                                          wpabuf_len(attr->val))) {
 523                         wpa_printf(MSG_ERROR, "Could not add RADIUS "
 524                                    "attribute");
 525                         return -1;
 526                 }
 527         }
 528
 529         return 0;
 530 }
 531
 532
 533 static void ieee802_1x_encapsulate_radius(struct hostapd_data *hapd,
 534                                           struct sta_info *sta,
 535                                           const u8 *eap, size_t len)
 536 {
 537         struct radius_msg *msg;
 538         struct eapol_state_machine *sm = sta->eapol_sm;
 539
 540         if (sm == NULL)
 541                 return;
 542
 543         ieee802_1x_learn_identity(hapd, sm, eap, len);
 544
 545         wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
 546                    "packet");
 547
 548         sm->radius_identifier = radius_client_get_id(hapd->radius);
 549         msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
 550                              sm->radius_identifier);
 551         if (msg == NULL) {
 552                 printf("Could not create net RADIUS packet\n");
 553                 return;
 554         }
 555
 556         radius_msg_make_authenticator(msg, (u8 *) sta, sizeof(*sta));
 557
 558         if (sm->identity &&
 559             !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
 560                                  sm->identity, sm->identity_len)) {
 561                 printf("Could not add User-Name\n");
 562                 goto fail;
 563         }
 564
 565         if (add_common_radius_attr(hapd, hapd->conf->radius_auth_req_attr, sta,
 566                                    msg) < 0)
 567                 goto fail;
 568
 569         /* TODO: should probably check MTU from driver config; 2304 is max for
 570          * IEEE 802.11, but use 1400 to avoid problems with too large packets
 571          */
 572         if (!hostapd_config_get_radius_attr(hapd->conf->radius_auth_req_attr,
 573                                             RADIUS_ATTR_FRAMED_MTU) &&
 574             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
 575                 printf("Could not add Framed-MTU\n");
 576                 goto fail;
 577         }
 578
 579         if (eap && !radius_msg_add_eap(msg, eap, len)) {
 580                 printf("Could not add EAP-Message\n");
 581                 goto fail;
 582         }
 583
 584         /* State attribute must be copied if and only if this packet is
 585          * Access-Request reply to the previous Access-Challenge */
 586         if (sm->last_recv_radius &&
 587             radius_msg_get_hdr(sm->last_recv_radius)->code ==
 588             RADIUS_CODE_ACCESS_CHALLENGE) {
 589                 int res = radius_msg_copy_attr(msg, sm->last_recv_radius,
 590                                                RADIUS_ATTR_STATE);
 591                 if (res < 0) {
 592                         printf("Could not copy State attribute from previous "
 593                                "Access-Challenge\n");
 594                         goto fail;
 595                 }
 596                 if (res > 0) {
 597                         wpa_printf(MSG_DEBUG, "Copied RADIUS State Attribute");
 598                 }
 599         }
 600
 601         if (hapd->conf->radius_request_cui) {
 602                 const u8 *cui;
 603                 size_t cui_len;
 604                 /* Add previously learned CUI or nul CUI to request CUI */
 605                 if (sm->radius_cui) {
 606                         cui = wpabuf_head(sm->radius_cui);
 607                         cui_len = wpabuf_len(sm->radius_cui);
 608                 } else {
 609                         cui = (const u8 *) "\0";
 610                         cui_len = 1;
 611                 }
 612                 if (!radius_msg_add_attr(msg,
 613                                          RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
 614                                          cui, cui_len)) {
 615                         wpa_printf(MSG_ERROR, "Could not add CUI");
 616                         goto fail;
 617                 }
 618         }
 619
 620         if (radius_client_send(hapd->radius, msg, RADIUS_AUTH, sta->addr) < 0)
 621                 goto fail;
 622
 623         return;
 624
 625  fail:
 626         radius_msg_free(msg);
 627 }
 628 #endif /* CONFIG_NO_RADIUS */
 629
 630
 631 static void handle_eap_response(struct hostapd_data *hapd,
 632                                 struct sta_info *sta, struct eap_hdr *eap,
 633                                 size_t len)
 634 {
 635         u8 type, *data;
 636         struct eapol_state_machine *sm = sta->eapol_sm;
 637         if (sm == NULL)
 638                 return;
 639
 640         data = (u8 *) (eap + 1);
 641
 642         if (len < sizeof(*eap) + 1) {
 643                 printf("handle_eap_response: too short response data\n");
 644                 return;
 645         }
 646
 647         sm->eap_type_supp = type = data[0];
 648
 649         hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
 650                        HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
 651                        "id=%d len=%d) from STA: EAP Response-%s (%d)",
 652                        eap->code, eap->identifier, be_to_host16(eap->length),
 653                        eap_server_get_name(0, type), type);
 654
 655         sm->dot1xAuthEapolRespFramesRx++;
 656
 657         wpabuf_free(sm->eap_if->eapRespData);
 658         sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
 659         sm->eapolEap = TRUE;
 660 }
 661
 662
 663 /* Process incoming EAP packet from Supplicant */
 664 static void handle_eap(struct hostapd_data *hapd, struct sta_info *sta,
 665                        u8 *buf, size_t len)
 666 {
 667         struct eap_hdr *eap;
 668         u16 eap_len;
 669
 670         if (len < sizeof(*eap)) {
 671                 printf("   too short EAP packet\n");
 672                 return;
 673         }
 674
 675         eap = (struct eap_hdr *) buf;
 676
 677         eap_len = be_to_host16(eap->length);
 678         wpa_printf(MSG_DEBUG, "EAP: code=%d identifier=%d length=%d",
 679                    eap->code, eap->identifier, eap_len);
 680         if (eap_len < sizeof(*eap)) {
 681                 wpa_printf(MSG_DEBUG, "   Invalid EAP length");
 682                 return;
 683         } else if (eap_len > len) {
 684                 wpa_printf(MSG_DEBUG, "   Too short frame to contain this EAP "
 685                            "packet");
 686                 return;
 687         } else if (eap_len < len) {
 688                 wpa_printf(MSG_DEBUG, "   Ignoring %lu extra bytes after EAP "
 689                            "packet", (unsigned long) len - eap_len);
 690         }
 691
 692         switch (eap->code) {
 693         case EAP_CODE_REQUEST:
 694                 wpa_printf(MSG_DEBUG, " (request)");
 695                 return;
 696         case EAP_CODE_RESPONSE:
 697                 wpa_printf(MSG_DEBUG, " (response)");
 698                 handle_eap_response(hapd, sta, eap, eap_len);
 699                 break;
 700         case EAP_CODE_SUCCESS:
 701                 wpa_printf(MSG_DEBUG, " (success)");
 702                 return;
 703         case EAP_CODE_FAILURE:
 704                 wpa_printf(MSG_DEBUG, " (failure)");
 705                 return;
 706         default:
 707                 wpa_printf(MSG_DEBUG, " (unknown code)");
 708                 return;
 709         }
 710 }
 711
 712
 713 static struct eapol_state_machine *
 714 ieee802_1x_alloc_eapol_sm(struct hostapd_data *hapd, struct sta_info *sta)
 715 {
 716         int flags = 0;
 717         if (sta->flags & WLAN_STA_PREAUTH)
 718                 flags |= EAPOL_SM_PREAUTH;
 719         if (sta->wpa_sm) {
 720                 flags |= EAPOL_SM_USES_WPA;
 721                 if (wpa_auth_sta_get_pmksa(sta->wpa_sm))
 722                         flags |= EAPOL_SM_FROM_PMKSA_CACHE;
 723         }
 724         return eapol_auth_alloc(hapd->eapol_auth, sta->addr, flags,
 725                                 sta->wps_ie, sta->p2p_ie, sta,
 726                                 sta->identity, sta->radius_cui);
 727 }
 728
 729
 730 /**
 731  * ieee802_1x_receive - Process the EAPOL frames from the Supplicant
 732  * @hapd: hostapd BSS data
 733  * @sa: Source address (sender of the EAPOL frame)
 734  * @buf: EAPOL frame
 735  * @len: Length of buf in octets
 736  *
 737  * This function is called for each incoming EAPOL frame from the interface
 738  */
 739 void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf,
 740                         size_t len)
 741 {
 742         struct sta_info *sta;
 743         struct ieee802_1x_hdr *hdr;
 744         struct ieee802_1x_eapol_key *key;
 745         u16 datalen;
 746         struct rsn_pmksa_cache_entry *pmksa;
 747         int key_mgmt;
 748
 749         if (!hapd->conf->ieee802_1x && !hapd->conf->wpa &&
 750             !hapd->conf->wps_state)
 751                 return;
 752
 753         wpa_printf(MSG_DEBUG, "IEEE 802.1X: %lu bytes from " MACSTR,
 754                    (unsigned long) len, MAC2STR(sa));
 755         sta = ap_get_sta(hapd, sa);
 756         if (!sta || (!(sta->flags & (WLAN_STA_ASSOC | WLAN_STA_PREAUTH)) &&
 757                      !(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED))) {
 758                 wpa_printf(MSG_DEBUG, "IEEE 802.1X data frame from not "
 759                            "associated/Pre-authenticating STA");
 760                 return;
 761         }
 762
 763         if (len < sizeof(*hdr)) {
 764                 printf("   too short IEEE 802.1X packet\n");
 765                 return;
 766         }
 767
 768         hdr = (struct ieee802_1x_hdr *) buf;
 769         datalen = be_to_host16(hdr->length);
 770         wpa_printf(MSG_DEBUG, "   IEEE 802.1X: version=%d type=%d length=%d",
 771                    hdr->version, hdr->type, datalen);
 772
 773         if (len - sizeof(*hdr) < datalen) {
 774                 printf("   frame too short for this IEEE 802.1X packet\n");
 775                 if (sta->eapol_sm)
 776                         sta->eapol_sm->dot1xAuthEapLengthErrorFramesRx++;
 777                 return;
 778         }
 779         if (len - sizeof(*hdr) > datalen) {
 780                 wpa_printf(MSG_DEBUG, "   ignoring %lu extra octets after "
 781                            "IEEE 802.1X packet",
 782                            (unsigned long) len - sizeof(*hdr) - datalen);
 783         }
 784
 785         if (sta->eapol_sm) {
 786                 sta->eapol_sm->dot1xAuthLastEapolFrameVersion = hdr->version;
 787                 sta->eapol_sm->dot1xAuthEapolFramesRx++;
 788         }
 789
 790         key = (struct ieee802_1x_eapol_key *) (hdr + 1);
 791         if (datalen >= sizeof(struct ieee802_1x_eapol_key) &&
 792             hdr->type == IEEE802_1X_TYPE_EAPOL_KEY &&
 793             (key->type == EAPOL_KEY_TYPE_WPA ||
 794              key->type == EAPOL_KEY_TYPE_RSN)) {
 795                 wpa_receive(hapd->wpa_auth, sta->wpa_sm, (u8 *) hdr,
 796                             sizeof(*hdr) + datalen);
 797                 return;
 798         }
 799
 800         if (!hapd->conf->ieee802_1x &&
 801             !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
 802                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
 803                            "802.1X not enabled and WPS not used");
 804                 return;
 805         }
 806
 807         key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
 808         if (key_mgmt != -1 && wpa_key_mgmt_wpa_psk(key_mgmt)) {
 809                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
 810                            "STA is using PSK");
 811                 return;
 812         }
 813
 814         if (!sta->eapol_sm) {
 815                 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
 816                 if (!sta->eapol_sm)
 817                         return;
 818
 819 #ifdef CONFIG_WPS
 820                 if (!hapd->conf->ieee802_1x) {
 821                         u32 wflags = sta->flags & (WLAN_STA_WPS |
 822                                                    WLAN_STA_WPS2 |
 823                                                    WLAN_STA_MAYBE_WPS);
 824                         if (wflags == WLAN_STA_MAYBE_WPS ||
 825                             wflags == (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) {
 826                                 /*
 827                                  * Delay EAPOL frame transmission until a
 828                                  * possible WPS STA initiates the handshake
 829                                  * with EAPOL-Start. Only allow the wait to be
 830                                  * skipped if the STA is known to support WPS
 831                                  * 2.0.
 832                                  */
 833                                 wpa_printf(MSG_DEBUG, "WPS: Do not start "
 834                                            "EAPOL until EAPOL-Start is "
 835                                            "received");
 836                                 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
 837                         }
 838                 }
 839 #endif /* CONFIG_WPS */
 840
 841                 sta->eapol_sm->eap_if->portEnabled = TRUE;
 842         }
 843
 844         /* since we support version 1, we can ignore version field and proceed
 845          * as specified in version 1 standard [IEEE Std 802.1X-2001, 7.5.5] */
 846         /* TODO: actually, we are not version 1 anymore.. However, Version 2
 847          * does not change frame contents, so should be ok to process frames
 848          * more or less identically. Some changes might be needed for
 849          * verification of fields. */
 850
 851         switch (hdr->type) {
 852         case IEEE802_1X_TYPE_EAP_PACKET:
 853                 handle_eap(hapd, sta, (u8 *) (hdr + 1), datalen);
 854                 break;
 855
 856         case IEEE802_1X_TYPE_EAPOL_START:
 857                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
 858                                HOSTAPD_LEVEL_DEBUG, "received EAPOL-Start "
 859                                "from STA");
 860                 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
 861                 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
 862                 if (pmksa) {
 863                         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
 864                                        HOSTAPD_LEVEL_DEBUG, "cached PMKSA "
 865                                        "available - ignore it since "
 866                                        "STA sent EAPOL-Start");
 867                         wpa_auth_sta_clear_pmksa(sta->wpa_sm, pmksa);
 868                 }
 869                 sta->eapol_sm->eapolStart = TRUE;
 870                 sta->eapol_sm->dot1xAuthEapolStartFramesRx++;
 871                 eap_server_clear_identity(sta->eapol_sm->eap);
 872                 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
 873                 break;
 874
 875         case IEEE802_1X_TYPE_EAPOL_LOGOFF:
 876                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
 877                                HOSTAPD_LEVEL_DEBUG, "received EAPOL-Logoff "
 878                                "from STA");
 879                 sta->acct_terminate_cause =
 880                         RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
 881                 accounting_sta_stop(hapd, sta);
 882                 sta->eapol_sm->eapolLogoff = TRUE;
 883                 sta->eapol_sm->dot1xAuthEapolLogoffFramesRx++;
 884                 eap_server_clear_identity(sta->eapol_sm->eap);
 885                 break;
 886
 887         case IEEE802_1X_TYPE_EAPOL_KEY:
 888                 wpa_printf(MSG_DEBUG, "   EAPOL-Key");
 889                 if (!ap_sta_is_authorized(sta)) {
 890                         wpa_printf(MSG_DEBUG, "   Dropped key data from "
 891                                    "unauthorized Supplicant");
 892                         break;
 893                 }
 894                 break;
 895
 896         case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT:
 897                 wpa_printf(MSG_DEBUG, "   EAPOL-Encapsulated-ASF-Alert");
 898                 /* TODO: implement support for this; show data */
 899                 break;
 900
 901         default:
 902                 wpa_printf(MSG_DEBUG, "   unknown IEEE 802.1X packet type");
 903                 sta->eapol_sm->dot1xAuthInvalidEapolFramesRx++;
 904                 break;
 905         }
 906
 907         eapol_auth_step(sta->eapol_sm);
 908 }
 909
 910
 911 /**
 912  * ieee802_1x_new_station - Start IEEE 802.1X authentication
 913  * @hapd: hostapd BSS data
 914  * @sta: The station
 915  *
 916  * This function is called to start IEEE 802.1X authentication when a new
 917  * station completes IEEE 802.11 association.
 918  */
 919 void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta)
 920 {
 921         struct rsn_pmksa_cache_entry *pmksa;
 922         int reassoc = 1;
 923         int force_1x = 0;
 924         int key_mgmt;
 925
 926 #ifdef CONFIG_WPS
 927         if (hapd->conf->wps_state && hapd->conf->wpa &&
 928             (sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
 929                 /*
 930                  * Need to enable IEEE 802.1X/EAPOL state machines for possible
 931                  * WPS handshake even if IEEE 802.1X/EAPOL is not used for
 932                  * authentication in this BSS.
 933                  */
 934                 force_1x = 1;
 935         }
 936 #endif /* CONFIG_WPS */
 937
 938         if (!force_1x && !hapd->conf->ieee802_1x) {
 939                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - "
 940                            "802.1X not enabled or forced for WPS");
 941                 /*
 942                  * Clear any possible EAPOL authenticator state to support
 943                  * reassociation change from WPS to PSK.
 944                  */
 945                 ieee802_1x_free_station(sta);
 946                 return;
 947         }
 948
 949         key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
 950         if (key_mgmt != -1 && wpa_key_mgmt_wpa_psk(key_mgmt)) {
 951                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - using PSK");
 952                 /*
 953                  * Clear any possible EAPOL authenticator state to support
 954                  * reassociation change from WPA-EAP to PSK.
 955                  */
 956                 ieee802_1x_free_station(sta);
 957                 return;
 958         }
 959
 960         if (sta->eapol_sm == NULL) {
 961                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
 962                                HOSTAPD_LEVEL_DEBUG, "start authentication");
 963                 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
 964                 if (sta->eapol_sm == NULL) {
 965                         hostapd_logger(hapd, sta->addr,
 966                                        HOSTAPD_MODULE_IEEE8021X,
 967                                        HOSTAPD_LEVEL_INFO,
 968                                        "failed to allocate state machine");
 969                         return;
 970                 }
 971                 reassoc = 0;
 972         }
 973
 974 #ifdef CONFIG_WPS
 975         sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
 976         if (!hapd->conf->ieee802_1x && !(sta->flags & WLAN_STA_WPS2)) {
 977                 /*
 978                  * Delay EAPOL frame transmission until a possible WPS STA
 979                  * initiates the handshake with EAPOL-Start. Only allow the
 980                  * wait to be skipped if the STA is known to support WPS 2.0.
 981                  */
 982                 wpa_printf(MSG_DEBUG, "WPS: Do not start EAPOL until "
 983                            "EAPOL-Start is received");
 984                 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
 985         }
 986 #endif /* CONFIG_WPS */
 987
 988         sta->eapol_sm->eap_if->portEnabled = TRUE;
 989
 990 #ifdef CONFIG_IEEE80211R
 991         if (sta->auth_alg == WLAN_AUTH_FT) {
 992                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
 993                                HOSTAPD_LEVEL_DEBUG,
 994                                "PMK from FT - skip IEEE 802.1X/EAP");
 995                 /* Setup EAPOL state machines to already authenticated state
 996                  * because of existing FT information from R0KH. */
 997                 sta->eapol_sm->keyRun = TRUE;
 998                 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
 999                 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1000                 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1001                 sta->eapol_sm->authSuccess = TRUE;
1002                 sta->eapol_sm->authFail = FALSE;
1003                 if (sta->eapol_sm->eap)
1004                         eap_sm_notify_cached(sta->eapol_sm->eap);
1005                 /* TODO: get vlan_id from R0KH using RRB message */
1006                 return;
1007         }
1008 #endif /* CONFIG_IEEE80211R */
1009
1010         pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
1011         if (pmksa) {
1012                 int old_vlanid;
1013
1014                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1015                                HOSTAPD_LEVEL_DEBUG,
1016                                "PMK from PMKSA cache - skip IEEE 802.1X/EAP");
1017                 /* Setup EAPOL state machines to already authenticated state
1018                  * because of existing PMKSA information in the cache. */
1019                 sta->eapol_sm->keyRun = TRUE;
1020                 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1021                 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1022                 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1023                 sta->eapol_sm->authSuccess = TRUE;
1024                 sta->eapol_sm->authFail = FALSE;
1025                 if (sta->eapol_sm->eap)
1026                         eap_sm_notify_cached(sta->eapol_sm->eap);
1027                 old_vlanid = sta->vlan_id;
1028                 pmksa_cache_to_eapol_data(pmksa, sta->eapol_sm);
1029                 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
1030                         sta->vlan_id = 0;
1031                 ap_sta_bind_vlan(hapd, sta, old_vlanid);
1032         } else {
1033                 if (reassoc) {
1034                         /*
1035                          * Force EAPOL state machines to start
1036                          * re-authentication without having to wait for the
1037                          * Supplicant to send EAPOL-Start.
1038                          */
1039                         sta->eapol_sm->reAuthenticate = TRUE;
1040                 }
1041                 eapol_auth_step(sta->eapol_sm);
1042         }
1043 }
1044
1045
1046 void ieee802_1x_free_station(struct sta_info *sta)
1047 {
1048         struct eapol_state_machine *sm = sta->eapol_sm;
1049
1050         if (sm == NULL)
1051                 return;
1052
1053         sta->eapol_sm = NULL;
1054
1055 #ifndef CONFIG_NO_RADIUS
1056         radius_msg_free(sm->last_recv_radius);
1057         radius_free_class(&sm->radius_class);
1058         wpabuf_free(sm->radius_cui);
1059 #endif /* CONFIG_NO_RADIUS */
1060
1061         os_free(sm->identity);
1062         eapol_auth_free(sm);
1063 }
1064
1065
1066 #ifndef CONFIG_NO_RADIUS
1067 static void ieee802_1x_decapsulate_radius(struct hostapd_data *hapd,
1068                                           struct sta_info *sta)
1069 {
1070         struct wpabuf *eap;
1071         const struct eap_hdr *hdr;
1072         int eap_type = -1;
1073         char buf[64];
1074         struct radius_msg *msg;
1075         struct eapol_state_machine *sm = sta->eapol_sm;
1076
1077         if (sm == NULL || sm->last_recv_radius == NULL) {
1078                 if (sm)
1079                         sm->eap_if->aaaEapNoReq = TRUE;
1080                 return;
1081         }
1082
1083         msg = sm->last_recv_radius;
1084
1085         eap = radius_msg_get_eap(msg);
1086         if (eap == NULL) {
1087                 /* RFC 3579, Chap. 2.6.3:
1088                  * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
1089                  * attribute */
1090                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1091                                HOSTAPD_LEVEL_WARNING, "could not extract "
1092                                "EAP-Message from RADIUS message");
1093                 sm->eap_if->aaaEapNoReq = TRUE;
1094                 return;
1095         }
1096
1097         if (wpabuf_len(eap) < sizeof(*hdr)) {
1098                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1099                                HOSTAPD_LEVEL_WARNING, "too short EAP packet "
1100                                "received from authentication server");
1101                 wpabuf_free(eap);
1102                 sm->eap_if->aaaEapNoReq = TRUE;
1103                 return;
1104         }
1105
1106         if (wpabuf_len(eap) > sizeof(*hdr))
1107                 eap_type = (wpabuf_head_u8(eap))[sizeof(*hdr)];
1108
1109         hdr = wpabuf_head(eap);
1110         switch (hdr->code) {
1111         case EAP_CODE_REQUEST:
1112                 if (eap_type >= 0)
1113                         sm->eap_type_authsrv = eap_type;
1114                 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
1115                             eap_type >= 0 ? eap_server_get_name(0, eap_type) :
1116                             "??",
1117                             eap_type);
1118                 break;
1119         case EAP_CODE_RESPONSE:
1120                 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
1121                             eap_type >= 0 ? eap_server_get_name(0, eap_type) :
1122                             "??",
1123                             eap_type);
1124                 break;
1125         case EAP_CODE_SUCCESS:
1126                 os_strlcpy(buf, "EAP Success", sizeof(buf));
1127                 break;
1128         case EAP_CODE_FAILURE:
1129                 os_strlcpy(buf, "EAP Failure", sizeof(buf));
1130                 break;
1131         default:
1132                 os_strlcpy(buf, "unknown EAP code", sizeof(buf));
1133                 break;
1134         }
1135         buf[sizeof(buf) - 1] = '\0';
1136         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1137                        HOSTAPD_LEVEL_DEBUG, "decapsulated EAP packet (code=%d "
1138                        "id=%d len=%d) from RADIUS server: %s",
1139                        hdr->code, hdr->identifier, be_to_host16(hdr->length),
1140                        buf);
1141         sm->eap_if->aaaEapReq = TRUE;
1142
1143         wpabuf_free(sm->eap_if->aaaEapReqData);
1144         sm->eap_if->aaaEapReqData = eap;
1145 }
1146
1147
1148 static void ieee802_1x_get_keys(struct hostapd_data *hapd,
1149                                 struct sta_info *sta, struct radius_msg *msg,
1150                                 struct radius_msg *req,
1151                                 const u8 *shared_secret,
1152                                 size_t shared_secret_len)
1153 {
1154         struct radius_ms_mppe_keys *keys;
1155         struct eapol_state_machine *sm = sta->eapol_sm;
1156         if (sm == NULL)
1157                 return;
1158
1159         keys = radius_msg_get_ms_keys(msg, req, shared_secret,
1160                                       shared_secret_len);
1161
1162         if (keys && keys->send && keys->recv) {
1163                 size_t len = keys->send_len + keys->recv_len;
1164                 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Send-Key",
1165                                 keys->send, keys->send_len);
1166                 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Recv-Key",
1167                                 keys->recv, keys->recv_len);
1168
1169                 os_free(sm->eap_if->aaaEapKeyData);
1170                 sm->eap_if->aaaEapKeyData = os_malloc(len);
1171                 if (sm->eap_if->aaaEapKeyData) {
1172                         os_memcpy(sm->eap_if->aaaEapKeyData, keys->recv,
1173                                   keys->recv_len);
1174                         os_memcpy(sm->eap_if->aaaEapKeyData + keys->recv_len,
1175                                   keys->send, keys->send_len);
1176                         sm->eap_if->aaaEapKeyDataLen = len;
1177                         sm->eap_if->aaaEapKeyAvailable = TRUE;
1178                 }
1179         }
1180
1181         if (keys) {
1182                 os_free(keys->send);
1183                 os_free(keys->recv);
1184                 os_free(keys);
1185         }
1186 }
1187
1188
1189 static void ieee802_1x_store_radius_class(struct hostapd_data *hapd,
1190                                           struct sta_info *sta,
1191                                           struct radius_msg *msg)
1192 {
1193         u8 *class;
1194         size_t class_len;
1195         struct eapol_state_machine *sm = sta->eapol_sm;
1196         int count, i;
1197         struct radius_attr_data *nclass;
1198         size_t nclass_count;
1199
1200         if (!hapd->conf->radius->acct_server || hapd->radius == NULL ||
1201             sm == NULL)
1202                 return;
1203
1204         radius_free_class(&sm->radius_class);
1205         count = radius_msg_count_attr(msg, RADIUS_ATTR_CLASS, 1);
1206         if (count <= 0)
1207                 return;
1208
1209         nclass = os_calloc(count, sizeof(struct radius_attr_data));
1210         if (nclass == NULL)
1211                 return;
1212
1213         nclass_count = 0;
1214
1215         class = NULL;
1216         for (i = 0; i < count; i++) {
1217                 do {
1218                         if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CLASS,
1219                                                     &class, &class_len,
1220                                                     class) < 0) {
1221                                 i = count;
1222                                 break;
1223                         }
1224                 } while (class_len < 1);
1225
1226                 nclass[nclass_count].data = os_malloc(class_len);
1227                 if (nclass[nclass_count].data == NULL)
1228                         break;
1229
1230                 os_memcpy(nclass[nclass_count].data, class, class_len);
1231                 nclass[nclass_count].len = class_len;
1232                 nclass_count++;
1233         }
1234
1235         sm->radius_class.attr = nclass;
1236         sm->radius_class.count = nclass_count;
1237         wpa_printf(MSG_DEBUG, "IEEE 802.1X: Stored %lu RADIUS Class "
1238                    "attributes for " MACSTR,
1239                    (unsigned long) sm->radius_class.count,
1240                    MAC2STR(sta->addr));
1241 }
1242
1243
1244 /* Update sta->identity based on User-Name attribute in Access-Accept */
1245 static void ieee802_1x_update_sta_identity(struct hostapd_data *hapd,
1246                                            struct sta_info *sta,
1247                                            struct radius_msg *msg)
1248 {
1249         u8 *buf, *identity;
1250         size_t len;
1251         struct eapol_state_machine *sm = sta->eapol_sm;
1252
1253         if (sm == NULL)
1254                 return;
1255
1256         if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &buf, &len,
1257                                     NULL) < 0)
1258                 return;
1259
1260         identity = os_malloc(len + 1);
1261         if (identity == NULL)
1262                 return;
1263
1264         os_memcpy(identity, buf, len);
1265         identity[len] = '\0';
1266
1267         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1268                        HOSTAPD_LEVEL_DEBUG, "old identity '%s' updated with "
1269                        "User-Name from Access-Accept '%s'",
1270                        sm->identity ? (char *) sm->identity : "N/A",
1271                        (char *) identity);
1272
1273         os_free(sm->identity);
1274         sm->identity = identity;
1275         sm->identity_len = len;
1276 }
1277
1278
1279 /* Update CUI based on Chargeable-User-Identity attribute in Access-Accept */
1280 static void ieee802_1x_update_sta_cui(struct hostapd_data *hapd,
1281                                       struct sta_info *sta,
1282                                       struct radius_msg *msg)
1283 {
1284         struct eapol_state_machine *sm = sta->eapol_sm;
1285         struct wpabuf *cui;
1286         u8 *buf;
1287         size_t len;
1288
1289         if (sm == NULL)
1290                 return;
1291
1292         if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
1293                                     &buf, &len, NULL) < 0)
1294                 return;
1295
1296         cui = wpabuf_alloc_copy(buf, len);
1297         if (cui == NULL)
1298                 return;
1299
1300         wpabuf_free(sm->radius_cui);
1301         sm->radius_cui = cui;
1302 }
1303
1304
1305 struct sta_id_search {
1306         u8 identifier;
1307         struct eapol_state_machine *sm;
1308 };
1309
1310
1311 static int ieee802_1x_select_radius_identifier(struct hostapd_data *hapd,
1312                                                struct sta_info *sta,
1313                                                void *ctx)
1314 {
1315         struct sta_id_search *id_search = ctx;
1316         struct eapol_state_machine *sm = sta->eapol_sm;
1317
1318         if (sm && sm->radius_identifier >= 0 &&
1319             sm->radius_identifier == id_search->identifier) {
1320                 id_search->sm = sm;
1321                 return 1;
1322         }
1323         return 0;
1324 }
1325
1326
1327 static struct eapol_state_machine *
1328 ieee802_1x_search_radius_identifier(struct hostapd_data *hapd, u8 identifier)
1329 {
1330         struct sta_id_search id_search;
1331         id_search.identifier = identifier;
1332         id_search.sm = NULL;
1333         ap_for_each_sta(hapd, ieee802_1x_select_radius_identifier, &id_search);
1334         return id_search.sm;
1335 }
1336
1337
1338 /**
1339  * ieee802_1x_receive_auth - Process RADIUS frames from Authentication Server
1340  * @msg: RADIUS response message
1341  * @req: RADIUS request message
1342  * @shared_secret: RADIUS shared secret
1343  * @shared_secret_len: Length of shared_secret in octets
1344  * @data: Context data (struct hostapd_data *)
1345  * Returns: Processing status
1346  */
1347 static RadiusRxResult
1348 ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
1349                         const u8 *shared_secret, size_t shared_secret_len,
1350                         void *data)
1351 {
1352         struct hostapd_data *hapd = data;
1353         struct sta_info *sta;
1354         u32 session_timeout = 0, termination_action, acct_interim_interval;
1355         int session_timeout_set, old_vlanid = 0;
1356         struct eapol_state_machine *sm;
1357         int override_eapReq = 0;
1358         struct radius_hdr *hdr = radius_msg_get_hdr(msg);
1359
1360         sm = ieee802_1x_search_radius_identifier(hapd, hdr->identifier);
1361         if (sm == NULL) {
1362                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Could not find matching "
1363                            "station for this RADIUS message");
1364                 return RADIUS_RX_UNKNOWN;
1365         }
1366         sta = sm->sta;
1367
1368         /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
1369          * present when packet contains an EAP-Message attribute */
1370         if (hdr->code == RADIUS_CODE_ACCESS_REJECT &&
1371             radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
1372                                 0) < 0 &&
1373             radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
1374                 wpa_printf(MSG_DEBUG, "Allowing RADIUS Access-Reject without "
1375                            "Message-Authenticator since it does not include "
1376                            "EAP-Message");
1377         } else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
1378                                      req, 1)) {
1379                 printf("Incoming RADIUS packet did not have correct "
1380                        "Message-Authenticator - dropped\n");
1381                 return RADIUS_RX_INVALID_AUTHENTICATOR;
1382         }
1383
1384         if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
1385             hdr->code != RADIUS_CODE_ACCESS_REJECT &&
1386             hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
1387                 printf("Unknown RADIUS message code\n");
1388                 return RADIUS_RX_UNKNOWN;
1389         }
1390
1391         sm->radius_identifier = -1;
1392         wpa_printf(MSG_DEBUG, "RADIUS packet matching with station " MACSTR,
1393                    MAC2STR(sta->addr));
1394
1395         radius_msg_free(sm->last_recv_radius);
1396         sm->last_recv_radius = msg;
1397
1398         session_timeout_set =
1399                 !radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
1400                                            &session_timeout);
1401         if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_TERMINATION_ACTION,
1402                                       &termination_action))
1403                 termination_action = RADIUS_TERMINATION_ACTION_DEFAULT;
1404
1405         if (hapd->conf->acct_interim_interval == 0 &&
1406             hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
1407             radius_msg_get_attr_int32(msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
1408                                       &acct_interim_interval) == 0) {
1409                 if (acct_interim_interval < 60) {
1410                         hostapd_logger(hapd, sta->addr,
1411                                        HOSTAPD_MODULE_IEEE8021X,
1412                                        HOSTAPD_LEVEL_INFO,
1413                                        "ignored too small "
1414                                        "Acct-Interim-Interval %d",
1415                                        acct_interim_interval);
1416                 } else
1417                         sta->acct_interim_interval = acct_interim_interval;
1418         }
1419
1420
1421         switch (hdr->code) {
1422         case RADIUS_CODE_ACCESS_ACCEPT:
1423                 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
1424                         sta->vlan_id = 0;
1425 #ifndef CONFIG_NO_VLAN
1426                 else {
1427                         old_vlanid = sta->vlan_id;
1428                         sta->vlan_id = radius_msg_get_vlanid(msg);
1429                 }
1430                 if (sta->vlan_id > 0 &&
1431                     hostapd_get_vlan_id_ifname(hapd->conf->vlan,
1432                                                sta->vlan_id)) {
1433                         hostapd_logger(hapd, sta->addr,
1434                                        HOSTAPD_MODULE_RADIUS,
1435                                        HOSTAPD_LEVEL_INFO,
1436                                        "VLAN ID %d", sta->vlan_id);
1437                 } else if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_REQUIRED) {
1438                         sta->eapol_sm->authFail = TRUE;
1439                         hostapd_logger(hapd, sta->addr,
1440                                        HOSTAPD_MODULE_IEEE8021X,
1441                                        HOSTAPD_LEVEL_INFO, "authentication "
1442                                        "server did not include required VLAN "
1443                                        "ID in Access-Accept");
1444                         break;
1445                 }
1446 #endif /* CONFIG_NO_VLAN */
1447
1448                 if (ap_sta_bind_vlan(hapd, sta, old_vlanid) < 0)
1449                         break;
1450
1451                 /* RFC 3580, Ch. 3.17 */
1452                 if (session_timeout_set && termination_action ==
1453                     RADIUS_TERMINATION_ACTION_RADIUS_REQUEST) {
1454                         sm->reAuthPeriod = session_timeout;
1455                 } else if (session_timeout_set)
1456                         ap_sta_session_timeout(hapd, sta, session_timeout);
1457
1458                 sm->eap_if->aaaSuccess = TRUE;
1459                 override_eapReq = 1;
1460                 ieee802_1x_get_keys(hapd, sta, msg, req, shared_secret,
1461                                     shared_secret_len);
1462                 ieee802_1x_store_radius_class(hapd, sta, msg);
1463                 ieee802_1x_update_sta_identity(hapd, sta, msg);
1464                 ieee802_1x_update_sta_cui(hapd, sta, msg);
1465                 if (sm->eap_if->eapKeyAvailable &&
1466                     wpa_auth_pmksa_add(sta->wpa_sm, sm->eapol_key_crypt,
1467                                        session_timeout_set ?
1468                                        (int) session_timeout : -1, sm) == 0) {
1469                         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
1470                                        HOSTAPD_LEVEL_DEBUG,
1471                                        "Added PMKSA cache entry");
1472                 }
1473                 break;
1474         case RADIUS_CODE_ACCESS_REJECT:
1475                 sm->eap_if->aaaFail = TRUE;
1476                 override_eapReq = 1;
1477                 break;
1478         case RADIUS_CODE_ACCESS_CHALLENGE:
1479                 sm->eap_if->aaaEapReq = TRUE;
1480                 if (session_timeout_set) {
1481                         /* RFC 2869, Ch. 2.3.2; RFC 3580, Ch. 3.17 */
1482                         sm->eap_if->aaaMethodTimeout = session_timeout;
1483                         hostapd_logger(hapd, sm->addr,
1484                                        HOSTAPD_MODULE_IEEE8021X,
1485                                        HOSTAPD_LEVEL_DEBUG,
1486                                        "using EAP timeout of %d seconds (from "
1487                                        "RADIUS)",
1488                                        sm->eap_if->aaaMethodTimeout);
1489                 } else {
1490                         /*
1491                          * Use dynamic retransmission behavior per EAP
1492                          * specification.
1493                          */
1494                         sm->eap_if->aaaMethodTimeout = 0;
1495                 }
1496                 break;
1497         }
1498
1499         ieee802_1x_decapsulate_radius(hapd, sta);
1500         if (override_eapReq)
1501                 sm->eap_if->aaaEapReq = FALSE;
1502
1503         eapol_auth_step(sm);
1504
1505         return RADIUS_RX_QUEUED;
1506 }
1507 #endif /* CONFIG_NO_RADIUS */
1508
1509
1510 void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta)
1511 {
1512         struct eapol_state_machine *sm = sta->eapol_sm;
1513         if (sm == NULL)
1514                 return;
1515
1516         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1517                        HOSTAPD_LEVEL_DEBUG, "aborting authentication");
1518
1519 #ifndef CONFIG_NO_RADIUS
1520         radius_msg_free(sm->last_recv_radius);
1521         sm->last_recv_radius = NULL;
1522 #endif /* CONFIG_NO_RADIUS */
1523
1524         if (sm->eap_if->eapTimeout) {
1525                 /*
1526                  * Disconnect the STA since it did not reply to the last EAP
1527                  * request and we cannot continue EAP processing (EAP-Failure
1528                  * could only be sent if the EAP peer actually replied).
1529                  */
1530                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "EAP Timeout, STA " MACSTR,
1531                         MAC2STR(sta->addr));
1532
1533                 sm->eap_if->portEnabled = FALSE;
1534                 ap_sta_disconnect(hapd, sta, sta->addr,
1535                                   WLAN_REASON_PREV_AUTH_NOT_VALID);
1536         }
1537 }
1538
1539
1540 static int ieee802_1x_rekey_broadcast(struct hostapd_data *hapd)
1541 {
1542         struct eapol_authenticator *eapol = hapd->eapol_auth;
1543
1544         if (hapd->conf->default_wep_key_len < 1)
1545                 return 0;
1546
1547         os_free(eapol->default_wep_key);
1548         eapol->default_wep_key = os_malloc(hapd->conf->default_wep_key_len);
1549         if (eapol->default_wep_key == NULL ||
1550             random_get_bytes(eapol->default_wep_key,
1551                              hapd->conf->default_wep_key_len)) {
1552                 printf("Could not generate random WEP key.\n");
1553                 os_free(eapol->default_wep_key);
1554                 eapol->default_wep_key = NULL;
1555                 return -1;
1556         }
1557
1558         wpa_hexdump_key(MSG_DEBUG, "IEEE 802.1X: New default WEP key",
1559                         eapol->default_wep_key,
1560                         hapd->conf->default_wep_key_len);
1561
1562         return 0;
1563 }
1564
1565
1566 static int ieee802_1x_sta_key_available(struct hostapd_data *hapd,
1567                                         struct sta_info *sta, void *ctx)
1568 {
1569         if (sta->eapol_sm) {
1570                 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1571                 eapol_auth_step(sta->eapol_sm);
1572         }
1573         return 0;
1574 }
1575
1576
1577 static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx)
1578 {
1579         struct hostapd_data *hapd = eloop_ctx;
1580         struct eapol_authenticator *eapol = hapd->eapol_auth;
1581
1582         if (eapol->default_wep_key_idx >= 3)
1583                 eapol->default_wep_key_idx =
1584                         hapd->conf->individual_wep_key_len > 0 ? 1 : 0;
1585         else
1586                 eapol->default_wep_key_idx++;
1587
1588         wpa_printf(MSG_DEBUG, "IEEE 802.1X: New default WEP key index %d",
1589                    eapol->default_wep_key_idx);
1590
1591         if (ieee802_1x_rekey_broadcast(hapd)) {
1592                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
1593                                HOSTAPD_LEVEL_WARNING, "failed to generate a "
1594                                "new broadcast key");
1595                 os_free(eapol->default_wep_key);
1596                 eapol->default_wep_key = NULL;
1597                 return;
1598         }
1599
1600         /* TODO: Could setup key for RX here, but change default TX keyid only
1601          * after new broadcast key has been sent to all stations. */
1602         if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
1603                                 broadcast_ether_addr,
1604                                 eapol->default_wep_key_idx, 1, NULL, 0,
1605                                 eapol->default_wep_key,
1606                                 hapd->conf->default_wep_key_len)) {
1607                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
1608                                HOSTAPD_LEVEL_WARNING, "failed to configure a "
1609                                "new broadcast key");
1610                 os_free(eapol->default_wep_key);
1611                 eapol->default_wep_key = NULL;
1612                 return;
1613         }
1614
1615         ap_for_each_sta(hapd, ieee802_1x_sta_key_available, NULL);
1616
1617         if (hapd->conf->wep_rekeying_period > 0) {
1618                 eloop_register_timeout(hapd->conf->wep_rekeying_period, 0,
1619                                        ieee802_1x_rekey, hapd, NULL);
1620         }
1621 }
1622
1623
1624 static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type,
1625                                   const u8 *data, size_t datalen)
1626 {
1627 #ifdef CONFIG_WPS
1628         struct sta_info *sta = sta_ctx;
1629
1630         if ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) ==
1631             WLAN_STA_MAYBE_WPS) {
1632                 const u8 *identity;
1633                 size_t identity_len;
1634                 struct eapol_state_machine *sm = sta->eapol_sm;
1635
1636                 identity = eap_get_identity(sm->eap, &identity_len);
1637                 if (identity &&
1638                     ((identity_len == WSC_ID_ENROLLEE_LEN &&
1639                       os_memcmp(identity, WSC_ID_ENROLLEE,
1640                                 WSC_ID_ENROLLEE_LEN) == 0) ||
1641                      (identity_len == WSC_ID_REGISTRAR_LEN &&
1642                       os_memcmp(identity, WSC_ID_REGISTRAR,
1643                                 WSC_ID_REGISTRAR_LEN) == 0))) {
1644                         wpa_printf(MSG_DEBUG, "WPS: WLAN_STA_MAYBE_WPS -> "
1645                                    "WLAN_STA_WPS");
1646                         sta->flags |= WLAN_STA_WPS;
1647                 }
1648         }
1649 #endif /* CONFIG_WPS */
1650
1651         ieee802_1x_send(ctx, sta_ctx, type, data, datalen);
1652 }
1653
1654
1655 static void ieee802_1x_aaa_send(void *ctx, void *sta_ctx,
1656                                 const u8 *data, size_t datalen)
1657 {
1658 #ifndef CONFIG_NO_RADIUS
1659         struct hostapd_data *hapd = ctx;
1660         struct sta_info *sta = sta_ctx;
1661
1662         ieee802_1x_encapsulate_radius(hapd, sta, data, datalen);
1663 #endif /* CONFIG_NO_RADIUS */
1664 }
1665
1666
1667 static void _ieee802_1x_finished(void *ctx, void *sta_ctx, int success,
1668                                  int preauth)
1669 {
1670         struct hostapd_data *hapd = ctx;
1671         struct sta_info *sta = sta_ctx;
1672         if (preauth)
1673                 rsn_preauth_finished(hapd, sta, success);
1674         else
1675                 ieee802_1x_finished(hapd, sta, success);
1676 }
1677
1678
1679 static int ieee802_1x_get_eap_user(void *ctx, const u8 *identity,
1680                                    size_t identity_len, int phase2,
1681                                    struct eap_user *user)
1682 {
1683         struct hostapd_data *hapd = ctx;
1684         const struct hostapd_eap_user *eap_user;
1685         int i;
1686
1687         eap_user = hostapd_get_eap_user(hapd->conf, identity,
1688                                         identity_len, phase2);
1689         if (eap_user == NULL)
1690                 return -1;
1691
1692         os_memset(user, 0, sizeof(*user));
1693         user->phase2 = phase2;
1694         for (i = 0; i < EAP_MAX_METHODS; i++) {
1695                 user->methods[i].vendor = eap_user->methods[i].vendor;
1696                 user->methods[i].method = eap_user->methods[i].method;
1697         }
1698
1699         if (eap_user->password) {
1700                 user->password = os_malloc(eap_user->password_len);
1701                 if (user->password == NULL)
1702                         return -1;
1703                 os_memcpy(user->password, eap_user->password,
1704                           eap_user->password_len);
1705                 user->password_len = eap_user->password_len;
1706                 user->password_hash = eap_user->password_hash;
1707         }
1708         user->force_version = eap_user->force_version;
1709         user->ttls_auth = eap_user->ttls_auth;
1710
1711         return 0;
1712 }
1713
1714
1715 static int ieee802_1x_sta_entry_alive(void *ctx, const u8 *addr)
1716 {
1717         struct hostapd_data *hapd = ctx;
1718         struct sta_info *sta;
1719         sta = ap_get_sta(hapd, addr);
1720         if (sta == NULL || sta->eapol_sm == NULL)
1721                 return 0;
1722         return 1;
1723 }
1724
1725
1726 static void ieee802_1x_logger(void *ctx, const u8 *addr,
1727                               eapol_logger_level level, const char *txt)
1728 {
1729 #ifndef CONFIG_NO_HOSTAPD_LOGGER
1730         struct hostapd_data *hapd = ctx;
1731         int hlevel;
1732
1733         switch (level) {
1734         case EAPOL_LOGGER_WARNING:
1735                 hlevel = HOSTAPD_LEVEL_WARNING;
1736                 break;
1737         case EAPOL_LOGGER_INFO:
1738                 hlevel = HOSTAPD_LEVEL_INFO;
1739                 break;
1740         case EAPOL_LOGGER_DEBUG:
1741         default:
1742                 hlevel = HOSTAPD_LEVEL_DEBUG;
1743                 break;
1744         }
1745
1746         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE8021X, hlevel, "%s",
1747                        txt);
1748 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
1749 }
1750
1751
1752 static void ieee802_1x_set_port_authorized(void *ctx, void *sta_ctx,
1753                                            int authorized)
1754 {
1755         struct hostapd_data *hapd = ctx;
1756         struct sta_info *sta = sta_ctx;
1757         ieee802_1x_set_sta_authorized(hapd, sta, authorized);
1758 }
1759
1760
1761 static void _ieee802_1x_abort_auth(void *ctx, void *sta_ctx)
1762 {
1763         struct hostapd_data *hapd = ctx;
1764         struct sta_info *sta = sta_ctx;
1765         ieee802_1x_abort_auth(hapd, sta);
1766 }
1767
1768
1769 static void _ieee802_1x_tx_key(void *ctx, void *sta_ctx)
1770 {
1771         struct hostapd_data *hapd = ctx;
1772         struct sta_info *sta = sta_ctx;
1773         ieee802_1x_tx_key(hapd, sta);
1774 }
1775
1776
1777 static void ieee802_1x_eapol_event(void *ctx, void *sta_ctx,
1778                                    enum eapol_event type)
1779 {
1780         /* struct hostapd_data *hapd = ctx; */
1781         struct sta_info *sta = sta_ctx;
1782         switch (type) {
1783         case EAPOL_AUTH_SM_CHANGE:
1784                 wpa_auth_sm_notify(sta->wpa_sm);
1785                 break;
1786         case EAPOL_AUTH_REAUTHENTICATE:
1787                 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
1788                 break;
1789         }
1790 }
1791
1792
1793 int ieee802_1x_init(struct hostapd_data *hapd)
1794 {
1795         int i;
1796         struct eapol_auth_config conf;
1797         struct eapol_auth_cb cb;
1798
1799         os_memset(&conf, 0, sizeof(conf));
1800         conf.ctx = hapd;
1801         conf.eap_reauth_period = hapd->conf->eap_reauth_period;
1802         conf.wpa = hapd->conf->wpa;
1803         conf.individual_wep_key_len = hapd->conf->individual_wep_key_len;
1804         conf.eap_server = hapd->conf->eap_server;
1805         conf.ssl_ctx = hapd->ssl_ctx;
1806         conf.msg_ctx = hapd->msg_ctx;
1807         conf.eap_sim_db_priv = hapd->eap_sim_db_priv;
1808         conf.eap_req_id_text = hapd->conf->eap_req_id_text;
1809         conf.eap_req_id_text_len = hapd->conf->eap_req_id_text_len;
1810         conf.pac_opaque_encr_key = hapd->conf->pac_opaque_encr_key;
1811         conf.eap_fast_a_id = hapd->conf->eap_fast_a_id;
1812         conf.eap_fast_a_id_len = hapd->conf->eap_fast_a_id_len;
1813         conf.eap_fast_a_id_info = hapd->conf->eap_fast_a_id_info;
1814         conf.eap_fast_prov = hapd->conf->eap_fast_prov;
1815         conf.pac_key_lifetime = hapd->conf->pac_key_lifetime;
1816         conf.pac_key_refresh_time = hapd->conf->pac_key_refresh_time;
1817         conf.eap_sim_aka_result_ind = hapd->conf->eap_sim_aka_result_ind;
1818         conf.tnc = hapd->conf->tnc;
1819         conf.wps = hapd->wps;
1820         conf.fragment_size = hapd->conf->fragment_size;
1821         conf.pwd_group = hapd->conf->pwd_group;
1822         conf.pbc_in_m1 = hapd->conf->pbc_in_m1;
1823
1824         os_memset(&cb, 0, sizeof(cb));
1825         cb.eapol_send = ieee802_1x_eapol_send;
1826         cb.aaa_send = ieee802_1x_aaa_send;
1827         cb.finished = _ieee802_1x_finished;
1828         cb.get_eap_user = ieee802_1x_get_eap_user;
1829         cb.sta_entry_alive = ieee802_1x_sta_entry_alive;
1830         cb.logger = ieee802_1x_logger;
1831         cb.set_port_authorized = ieee802_1x_set_port_authorized;
1832         cb.abort_auth = _ieee802_1x_abort_auth;
1833         cb.tx_key = _ieee802_1x_tx_key;
1834         cb.eapol_event = ieee802_1x_eapol_event;
1835
1836         hapd->eapol_auth = eapol_auth_init(&conf, &cb);
1837         if (hapd->eapol_auth == NULL)
1838                 return -1;
1839
1840         if ((hapd->conf->ieee802_1x || hapd->conf->wpa) &&
1841             hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1))
1842                 return -1;
1843
1844 #ifndef CONFIG_NO_RADIUS
1845         if (radius_client_register(hapd->radius, RADIUS_AUTH,
1846                                    ieee802_1x_receive_auth, hapd))
1847                 return -1;
1848 #endif /* CONFIG_NO_RADIUS */
1849
1850         if (hapd->conf->default_wep_key_len) {
1851                 for (i = 0; i < 4; i++)
1852                         hostapd_drv_set_key(hapd->conf->iface, hapd,
1853                                             WPA_ALG_NONE, NULL, i, 0, NULL, 0,
1854                                             NULL, 0);
1855
1856                 ieee802_1x_rekey(hapd, NULL);
1857
1858                 if (hapd->eapol_auth->default_wep_key == NULL)
1859                         return -1;
1860         }
1861
1862         return 0;
1863 }
1864
1865
1866 void ieee802_1x_deinit(struct hostapd_data *hapd)
1867 {
1868         eloop_cancel_timeout(ieee802_1x_rekey, hapd, NULL);
1869
1870         if (hapd->driver != NULL &&
1871             (hapd->conf->ieee802_1x || hapd->conf->wpa))
1872                 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
1873
1874         eapol_auth_deinit(hapd->eapol_auth);
1875         hapd->eapol_auth = NULL;
1876 }
1877
1878
1879 int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
1880                          const u8 *buf, size_t len, int ack)
1881 {
1882         struct ieee80211_hdr *hdr;
1883         u8 *pos;
1884         const unsigned char rfc1042_hdr[ETH_ALEN] =
1885                 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
1886
1887         if (sta == NULL)
1888                 return -1;
1889         if (len < sizeof(*hdr) + sizeof(rfc1042_hdr) + 2)
1890                 return 0;
1891
1892         hdr = (struct ieee80211_hdr *) buf;
1893         pos = (u8 *) (hdr + 1);
1894         if (os_memcmp(pos, rfc1042_hdr, sizeof(rfc1042_hdr)) != 0)
1895                 return 0;
1896         pos += sizeof(rfc1042_hdr);
1897         if (WPA_GET_BE16(pos) != ETH_P_PAE)
1898                 return 0;
1899         pos += 2;
1900
1901         return ieee802_1x_eapol_tx_status(hapd, sta, pos, buf + len - pos,
1902                                           ack);
1903 }
1904
1905
1906 int ieee802_1x_eapol_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
1907                                const u8 *buf, int len, int ack)
1908 {
1909         const struct ieee802_1x_hdr *xhdr =
1910                 (const struct ieee802_1x_hdr *) buf;
1911         const u8 *pos = buf + sizeof(*xhdr);
1912         struct ieee802_1x_eapol_key *key;
1913
1914         if (len < (int) sizeof(*xhdr))
1915                 return 0;
1916         wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR " TX status - version=%d "
1917                    "type=%d length=%d - ack=%d",
1918                    MAC2STR(sta->addr), xhdr->version, xhdr->type,
1919                    be_to_host16(xhdr->length), ack);
1920
1921         if (xhdr->type != IEEE802_1X_TYPE_EAPOL_KEY)
1922                 return 0;
1923
1924         if (pos + sizeof(struct wpa_eapol_key) <= buf + len) {
1925                 const struct wpa_eapol_key *wpa;
1926                 wpa = (const struct wpa_eapol_key *) pos;
1927                 if (wpa->type == EAPOL_KEY_TYPE_RSN ||
1928                     wpa->type == EAPOL_KEY_TYPE_WPA)
1929                         wpa_auth_eapol_key_tx_status(hapd->wpa_auth,
1930                                                      sta->wpa_sm, ack);
1931         }
1932
1933         /* EAPOL EAP-Packet packets are eventually re-sent by either Supplicant
1934          * or Authenticator state machines, but EAPOL-Key packets are not
1935          * retransmitted in case of failure. Try to re-send failed EAPOL-Key
1936          * packets couple of times because otherwise STA keys become
1937          * unsynchronized with AP. */
1938         if (!ack && pos + sizeof(*key) <= buf + len) {
1939                 key = (struct ieee802_1x_eapol_key *) pos;
1940                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1941                                HOSTAPD_LEVEL_DEBUG, "did not Ack EAPOL-Key "
1942                                "frame (%scast index=%d)",
1943                                key->key_index & BIT(7) ? "uni" : "broad",
1944                                key->key_index & ~BIT(7));
1945                 /* TODO: re-send EAPOL-Key couple of times (with short delay
1946                  * between them?). If all attempt fail, report error and
1947                  * deauthenticate STA so that it will get new keys when
1948                  * authenticating again (e.g., after returning in range).
1949                  * Separate limit/transmit state needed both for unicast and
1950                  * broadcast keys(?) */
1951         }
1952         /* TODO: could move unicast key configuration from ieee802_1x_tx_key()
1953          * to here and change the key only if the EAPOL-Key packet was Acked.
1954          */
1955
1956         return 1;
1957 }
1958
1959
1960 u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len)
1961 {
1962         if (sm == NULL || sm->identity == NULL)
1963                 return NULL;
1964
1965         *len = sm->identity_len;
1966         return sm->identity;
1967 }
1968
1969
1970 u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len,
1971                                  int idx)
1972 {
1973         if (sm == NULL || sm->radius_class.attr == NULL ||
1974             idx >= (int) sm->radius_class.count)
1975                 return NULL;
1976
1977         *len = sm->radius_class.attr[idx].len;
1978         return sm->radius_class.attr[idx].data;
1979 }
1980
1981
1982 struct wpabuf * ieee802_1x_get_radius_cui(struct eapol_state_machine *sm)
1983 {
1984         if (sm == NULL)
1985                 return NULL;
1986         return sm->radius_cui;
1987 }
1988
1989
1990 const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len)
1991 {
1992         *len = 0;
1993         if (sm == NULL)
1994                 return NULL;
1995
1996         *len = sm->eap_if->eapKeyDataLen;
1997         return sm->eap_if->eapKeyData;
1998 }
1999
2000
2001 void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm,
2002                                     int enabled)
2003 {
2004         if (sm == NULL)
2005                 return;
2006         sm->eap_if->portEnabled = enabled ? TRUE : FALSE;
2007         eapol_auth_step(sm);
2008 }
2009
2010
2011 void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm,
2012                                   int valid)
2013 {
2014         if (sm == NULL)
2015                 return;
2016         sm->portValid = valid ? TRUE : FALSE;
2017         eapol_auth_step(sm);
2018 }
2019
2020
2021 void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, int pre_auth)
2022 {
2023         if (sm == NULL)
2024                 return;
2025         if (pre_auth)
2026                 sm->flags |= EAPOL_SM_PREAUTH;
2027         else
2028                 sm->flags &= ~EAPOL_SM_PREAUTH;
2029 }
2030
2031
2032 static const char * bool_txt(Boolean bool)
2033 {
2034         return bool ? "TRUE" : "FALSE";
2035 }
2036
2037
2038 int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
2039 {
2040         /* TODO */
2041         return 0;
2042 }
2043
2044
2045 int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
2046                            char *buf, size_t buflen)
2047 {
2048         int len = 0, ret;
2049         struct eapol_state_machine *sm = sta->eapol_sm;
2050         struct os_time t;
2051
2052         if (sm == NULL)
2053                 return 0;
2054
2055         ret = os_snprintf(buf + len, buflen - len,
2056                           "dot1xPaePortNumber=%d\n"
2057                           "dot1xPaePortProtocolVersion=%d\n"
2058                           "dot1xPaePortCapabilities=1\n"
2059                           "dot1xPaePortInitialize=%d\n"
2060                           "dot1xPaePortReauthenticate=FALSE\n",
2061                           sta->aid,
2062                           EAPOL_VERSION,
2063                           sm->initialize);
2064         if (ret < 0 || (size_t) ret >= buflen - len)
2065                 return len;
2066         len += ret;
2067
2068         /* dot1xAuthConfigTable */
2069         ret = os_snprintf(buf + len, buflen - len,
2070                           "dot1xAuthPaeState=%d\n"
2071                           "dot1xAuthBackendAuthState=%d\n"
2072                           "dot1xAuthAdminControlledDirections=%d\n"
2073                           "dot1xAuthOperControlledDirections=%d\n"
2074                           "dot1xAuthAuthControlledPortStatus=%d\n"
2075                           "dot1xAuthAuthControlledPortControl=%d\n"
2076                           "dot1xAuthQuietPeriod=%u\n"
2077                           "dot1xAuthServerTimeout=%u\n"
2078                           "dot1xAuthReAuthPeriod=%u\n"
2079                           "dot1xAuthReAuthEnabled=%s\n"
2080                           "dot1xAuthKeyTxEnabled=%s\n",
2081                           sm->auth_pae_state + 1,
2082                           sm->be_auth_state + 1,
2083                           sm->adminControlledDirections,
2084                           sm->operControlledDirections,
2085                           sm->authPortStatus,
2086                           sm->portControl,
2087                           sm->quietPeriod,
2088                           sm->serverTimeout,
2089                           sm->reAuthPeriod,
2090                           bool_txt(sm->reAuthEnabled),
2091                           bool_txt(sm->keyTxEnabled));
2092         if (ret < 0 || (size_t) ret >= buflen - len)
2093                 return len;
2094         len += ret;
2095
2096         /* dot1xAuthStatsTable */
2097         ret = os_snprintf(buf + len, buflen - len,
2098                           "dot1xAuthEapolFramesRx=%u\n"
2099                           "dot1xAuthEapolFramesTx=%u\n"
2100                           "dot1xAuthEapolStartFramesRx=%u\n"
2101                           "dot1xAuthEapolLogoffFramesRx=%u\n"
2102                           "dot1xAuthEapolRespIdFramesRx=%u\n"
2103                           "dot1xAuthEapolRespFramesRx=%u\n"
2104                           "dot1xAuthEapolReqIdFramesTx=%u\n"
2105                           "dot1xAuthEapolReqFramesTx=%u\n"
2106                           "dot1xAuthInvalidEapolFramesRx=%u\n"
2107                           "dot1xAuthEapLengthErrorFramesRx=%u\n"
2108                           "dot1xAuthLastEapolFrameVersion=%u\n"
2109                           "dot1xAuthLastEapolFrameSource=" MACSTR "\n",
2110                           sm->dot1xAuthEapolFramesRx,
2111                           sm->dot1xAuthEapolFramesTx,
2112                           sm->dot1xAuthEapolStartFramesRx,
2113                           sm->dot1xAuthEapolLogoffFramesRx,
2114                           sm->dot1xAuthEapolRespIdFramesRx,
2115                           sm->dot1xAuthEapolRespFramesRx,
2116                           sm->dot1xAuthEapolReqIdFramesTx,
2117                           sm->dot1xAuthEapolReqFramesTx,
2118                           sm->dot1xAuthInvalidEapolFramesRx,
2119                           sm->dot1xAuthEapLengthErrorFramesRx,
2120                           sm->dot1xAuthLastEapolFrameVersion,
2121                           MAC2STR(sm->addr));
2122         if (ret < 0 || (size_t) ret >= buflen - len)
2123                 return len;
2124         len += ret;
2125
2126         /* dot1xAuthDiagTable */
2127         ret = os_snprintf(buf + len, buflen - len,
2128                           "dot1xAuthEntersConnecting=%u\n"
2129                           "dot1xAuthEapLogoffsWhileConnecting=%u\n"
2130                           "dot1xAuthEntersAuthenticating=%u\n"
2131                           "dot1xAuthAuthSuccessesWhileAuthenticating=%u\n"
2132                           "dot1xAuthAuthTimeoutsWhileAuthenticating=%u\n"
2133                           "dot1xAuthAuthFailWhileAuthenticating=%u\n"
2134                           "dot1xAuthAuthEapStartsWhileAuthenticating=%u\n"
2135                           "dot1xAuthAuthEapLogoffWhileAuthenticating=%u\n"
2136                           "dot1xAuthAuthReauthsWhileAuthenticated=%u\n"
2137                           "dot1xAuthAuthEapStartsWhileAuthenticated=%u\n"
2138                           "dot1xAuthAuthEapLogoffWhileAuthenticated=%u\n"
2139                           "dot1xAuthBackendResponses=%u\n"
2140                           "dot1xAuthBackendAccessChallenges=%u\n"
2141                           "dot1xAuthBackendOtherRequestsToSupplicant=%u\n"
2142                           "dot1xAuthBackendAuthSuccesses=%u\n"
2143                           "dot1xAuthBackendAuthFails=%u\n",
2144                           sm->authEntersConnecting,
2145                           sm->authEapLogoffsWhileConnecting,
2146                           sm->authEntersAuthenticating,
2147                           sm->authAuthSuccessesWhileAuthenticating,
2148                           sm->authAuthTimeoutsWhileAuthenticating,
2149                           sm->authAuthFailWhileAuthenticating,
2150                           sm->authAuthEapStartsWhileAuthenticating,
2151                           sm->authAuthEapLogoffWhileAuthenticating,
2152                           sm->authAuthReauthsWhileAuthenticated,
2153                           sm->authAuthEapStartsWhileAuthenticated,
2154                           sm->authAuthEapLogoffWhileAuthenticated,
2155                           sm->backendResponses,
2156                           sm->backendAccessChallenges,
2157                           sm->backendOtherRequestsToSupplicant,
2158                           sm->backendAuthSuccesses,
2159                           sm->backendAuthFails);
2160         if (ret < 0 || (size_t) ret >= buflen - len)
2161                 return len;
2162         len += ret;
2163
2164         /* dot1xAuthSessionStatsTable */
2165         os_get_time(&t);
2166         ret = os_snprintf(buf + len, buflen - len,
2167                           /* TODO: dot1xAuthSessionOctetsRx */
2168                           /* TODO: dot1xAuthSessionOctetsTx */
2169                           /* TODO: dot1xAuthSessionFramesRx */
2170                           /* TODO: dot1xAuthSessionFramesTx */
2171                           "dot1xAuthSessionId=%08X-%08X\n"
2172                           "dot1xAuthSessionAuthenticMethod=%d\n"
2173                           "dot1xAuthSessionTime=%u\n"
2174                           "dot1xAuthSessionTerminateCause=999\n"
2175                           "dot1xAuthSessionUserName=%s\n",
2176                           sta->acct_session_id_hi, sta->acct_session_id_lo,
2177                           (wpa_key_mgmt_wpa_ieee8021x(
2178                                    wpa_auth_sta_key_mgmt(sta->wpa_sm))) ?
2179                           1 : 2,
2180                           (unsigned int) (t.sec - sta->acct_session_start),
2181                           sm->identity);
2182         if (ret < 0 || (size_t) ret >= buflen - len)
2183                 return len;
2184         len += ret;
2185
2186         return len;
2187 }
2188
2189
2190 static void ieee802_1x_finished(struct hostapd_data *hapd,
2191                                 struct sta_info *sta, int success)
2192 {
2193         const u8 *key;
2194         size_t len;
2195         /* TODO: get PMKLifetime from WPA parameters */
2196         static const int dot11RSNAConfigPMKLifetime = 43200;
2197
2198         key = ieee802_1x_get_key(sta->eapol_sm, &len);
2199         if (success && key && len >= PMK_LEN &&
2200             wpa_auth_pmksa_add(sta->wpa_sm, key, dot11RSNAConfigPMKLifetime,
2201                                sta->eapol_sm) == 0) {
2202                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
2203                                HOSTAPD_LEVEL_DEBUG,
2204                                "Added PMKSA cache entry (IEEE 802.1X)");
2205         }
2206
2207         if (!success) {
2208                 /*
2209                  * Many devices require deauthentication after WPS provisioning
2210                  * and some may not be be able to do that themselves, so
2211                  * disconnect the client here. In addition, this may also
2212                  * benefit IEEE 802.1X/EAPOL authentication cases, too since
2213                  * the EAPOL PAE state machine would remain in HELD state for
2214                  * considerable amount of time and some EAP methods, like
2215                  * EAP-FAST with anonymous provisioning, may require another
2216                  * EAPOL authentication to be started to complete connection.
2217                  */
2218                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "IEEE 802.1X: Force "
2219                         "disconnection after EAP-Failure");
2220                 /* Add a small sleep to increase likelihood of previously
2221                  * requested EAP-Failure TX getting out before this should the
2222                  * driver reorder operations.
2223                  */
2224                 os_sleep(0, 10000);
2225 #ifndef ANDROID_P2P
2226                 /* We need not do this for driver. For AP-SME flags if we send this disassoc,
2227                   * the p2p_client is gettig disassoc after it has completed the assoc
2228                   */
2229                 ap_sta_disconnect(hapd, sta, sta->addr,
2230                                   WLAN_REASON_IEEE_802_1X_AUTH_FAILED);
2231 #endif
2232         }
2233 }