contrib/wpa/src/ap/ieee802_1x.c

   1 /*
   2  * hostapd / IEEE 802.1X-2004 Authenticator
   3  * Copyright (c) 2002-2019, 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 #ifdef CONFIG_SQLITE
  11 #include <sqlite3.h>
  12 #endif /* CONFIG_SQLITE */
  13
  14 #include "utils/common.h"
  15 #include "utils/eloop.h"
  16 #include "crypto/md5.h"
  17 #include "crypto/crypto.h"
  18 #include "crypto/random.h"
  19 #include "common/ieee802_11_defs.h"
  20 #include "radius/radius.h"
  21 #include "radius/radius_client.h"
  22 #include "eap_server/eap.h"
  23 #include "eap_common/eap_wsc_common.h"
  24 #include "eapol_auth/eapol_auth_sm.h"
  25 #include "eapol_auth/eapol_auth_sm_i.h"
  26 #include "p2p/p2p.h"
  27 #include "hostapd.h"
  28 #include "accounting.h"
  29 #include "sta_info.h"
  30 #include "wpa_auth.h"
  31 #include "preauth_auth.h"
  32 #include "pmksa_cache_auth.h"
  33 #include "ap_config.h"
  34 #include "ap_drv_ops.h"
  35 #include "wps_hostapd.h"
  36 #include "hs20.h"
  37 /* FIX: Not really a good thing to require ieee802_11.h here.. (FILS) */
  38 #include "ieee802_11.h"
  39 #include "ieee802_1x.h"
  40 #include "wpa_auth_kay.h"
  41
  42
  43 #ifdef CONFIG_HS20
  44 static void ieee802_1x_wnm_notif_send(void *eloop_ctx, void *timeout_ctx);
  45 #endif /* CONFIG_HS20 */
  46 static void ieee802_1x_finished(struct hostapd_data *hapd,
  47                                 struct sta_info *sta, int success,
  48                                 int remediation);
  49
  50
  51 static void ieee802_1x_send(struct hostapd_data *hapd, struct sta_info *sta,
  52                             u8 type, const u8 *data, size_t datalen)
  53 {
  54         u8 *buf;
  55         struct ieee802_1x_hdr *xhdr;
  56         size_t len;
  57         int encrypt = 0;
  58
  59         len = sizeof(*xhdr) + datalen;
  60         buf = os_zalloc(len);
  61         if (buf == NULL) {
  62                 wpa_printf(MSG_ERROR, "malloc() failed for "
  63                            "ieee802_1x_send(len=%lu)",
  64                            (unsigned long) len);
  65                 return;
  66         }
  67
  68         xhdr = (struct ieee802_1x_hdr *) buf;
  69         xhdr->version = hapd->conf->eapol_version;
  70 #ifdef CONFIG_MACSEC
  71         if (xhdr->version > 2 && hapd->conf->macsec_policy == 0)
  72                 xhdr->version = 2;
  73 #endif /* CONFIG_MACSEC */
  74         xhdr->type = type;
  75         xhdr->length = host_to_be16(datalen);
  76
  77         if (datalen > 0 && data != NULL)
  78                 os_memcpy(xhdr + 1, data, datalen);
  79
  80         if (wpa_auth_pairwise_set(sta->wpa_sm))
  81                 encrypt = 1;
  82 #ifdef CONFIG_TESTING_OPTIONS
  83         if (hapd->ext_eapol_frame_io) {
  84                 size_t hex_len = 2 * len + 1;
  85                 char *hex = os_malloc(hex_len);
  86
  87                 if (hex) {
  88                         wpa_snprintf_hex(hex, hex_len, buf, len);
  89                         wpa_msg(hapd->msg_ctx, MSG_INFO,
  90                                 "EAPOL-TX " MACSTR " %s",
  91                                 MAC2STR(sta->addr), hex);
  92                         os_free(hex);
  93                 }
  94         } else
  95 #endif /* CONFIG_TESTING_OPTIONS */
  96         if (sta->flags & WLAN_STA_PREAUTH) {
  97                 rsn_preauth_send(hapd, sta, buf, len);
  98         } else {
  99                 hostapd_drv_hapd_send_eapol(
 100                         hapd, sta->addr, buf, len,
 101                         encrypt, hostapd_sta_flags_to_drv(sta->flags));
 102         }
 103
 104         os_free(buf);
 105 }
 106
 107
 108 void ieee802_1x_set_sta_authorized(struct hostapd_data *hapd,
 109                                    struct sta_info *sta, int authorized)
 110 {
 111         int res;
 112
 113         if (sta->flags & WLAN_STA_PREAUTH)
 114                 return;
 115
 116         if (authorized) {
 117                 ap_sta_set_authorized(hapd, sta, 1);
 118                 res = hostapd_set_authorized(hapd, sta, 1);
 119                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
 120                                HOSTAPD_LEVEL_DEBUG, "authorizing port");
 121         } else {
 122                 ap_sta_set_authorized(hapd, sta, 0);
 123                 res = hostapd_set_authorized(hapd, sta, 0);
 124                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
 125                                HOSTAPD_LEVEL_DEBUG, "unauthorizing port");
 126         }
 127
 128         if (res && errno != ENOENT) {
 129                 wpa_printf(MSG_DEBUG, "Could not set station " MACSTR
 130                            " flags for kernel driver (errno=%d).",
 131                            MAC2STR(sta->addr), errno);
 132         }
 133
 134         if (authorized) {
 135                 os_get_reltime(&sta->connected_time);
 136                 accounting_sta_start(hapd, sta);
 137         }
 138 }
 139
 140
 141 #ifndef CONFIG_FIPS
 142 #ifndef CONFIG_NO_RC4
 143
 144 static void ieee802_1x_tx_key_one(struct hostapd_data *hapd,
 145                                   struct sta_info *sta,
 146                                   int idx, int broadcast,
 147                                   u8 *key_data, size_t key_len)
 148 {
 149         u8 *buf, *ekey;
 150         struct ieee802_1x_hdr *hdr;
 151         struct ieee802_1x_eapol_key *key;
 152         size_t len, ekey_len;
 153         struct eapol_state_machine *sm = sta->eapol_sm;
 154
 155         if (sm == NULL)
 156                 return;
 157
 158         len = sizeof(*key) + key_len;
 159         buf = os_zalloc(sizeof(*hdr) + len);
 160         if (buf == NULL)
 161                 return;
 162
 163         hdr = (struct ieee802_1x_hdr *) buf;
 164         key = (struct ieee802_1x_eapol_key *) (hdr + 1);
 165         key->type = EAPOL_KEY_TYPE_RC4;
 166         WPA_PUT_BE16(key->key_length, key_len);
 167         wpa_get_ntp_timestamp(key->replay_counter);
 168         if (os_memcmp(key->replay_counter,
 169                       hapd->last_1x_eapol_key_replay_counter,
 170                       IEEE8021X_REPLAY_COUNTER_LEN) <= 0) {
 171                 /* NTP timestamp did not increment from last EAPOL-Key frame;
 172                  * use previously used value + 1 instead. */
 173                 inc_byte_array(hapd->last_1x_eapol_key_replay_counter,
 174                                IEEE8021X_REPLAY_COUNTER_LEN);
 175                 os_memcpy(key->replay_counter,
 176                           hapd->last_1x_eapol_key_replay_counter,
 177                           IEEE8021X_REPLAY_COUNTER_LEN);
 178         } else {
 179                 os_memcpy(hapd->last_1x_eapol_key_replay_counter,
 180                           key->replay_counter,
 181                           IEEE8021X_REPLAY_COUNTER_LEN);
 182         }
 183
 184         if (random_get_bytes(key->key_iv, sizeof(key->key_iv))) {
 185                 wpa_printf(MSG_ERROR, "Could not get random numbers");
 186                 os_free(buf);
 187                 return;
 188         }
 189
 190         key->key_index = idx | (broadcast ? 0 : BIT(7));
 191         if (hapd->conf->eapol_key_index_workaround) {
 192                 /* According to some information, WinXP Supplicant seems to
 193                  * interpret bit7 as an indication whether the key is to be
 194                  * activated, so make it possible to enable workaround that
 195                  * sets this bit for all keys. */
 196                 key->key_index |= BIT(7);
 197         }
 198
 199         /* Key is encrypted using "Key-IV + MSK[0..31]" as the RC4-key and
 200          * MSK[32..63] is used to sign the message. */
 201         if (sm->eap_if->eapKeyData == NULL || sm->eap_if->eapKeyDataLen < 64) {
 202                 wpa_printf(MSG_ERROR, "No eapKeyData available for encrypting "
 203                            "and signing EAPOL-Key");
 204                 os_free(buf);
 205                 return;
 206         }
 207         os_memcpy((u8 *) (key + 1), key_data, key_len);
 208         ekey_len = sizeof(key->key_iv) + 32;
 209         ekey = os_malloc(ekey_len);
 210         if (ekey == NULL) {
 211                 wpa_printf(MSG_ERROR, "Could not encrypt key");
 212                 os_free(buf);
 213                 return;
 214         }
 215         os_memcpy(ekey, key->key_iv, sizeof(key->key_iv));
 216         os_memcpy(ekey + sizeof(key->key_iv), sm->eap_if->eapKeyData, 32);
 217         rc4_skip(ekey, ekey_len, 0, (u8 *) (key + 1), key_len);
 218         os_free(ekey);
 219
 220         /* This header is needed here for HMAC-MD5, but it will be regenerated
 221          * in ieee802_1x_send() */
 222         hdr->version = hapd->conf->eapol_version;
 223 #ifdef CONFIG_MACSEC
 224         if (hdr->version > 2)
 225                 hdr->version = 2;
 226 #endif /* CONFIG_MACSEC */
 227         hdr->type = IEEE802_1X_TYPE_EAPOL_KEY;
 228         hdr->length = host_to_be16(len);
 229         hmac_md5(sm->eap_if->eapKeyData + 32, 32, buf, sizeof(*hdr) + len,
 230                  key->key_signature);
 231
 232         wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key to " MACSTR
 233                    " (%s index=%d)", MAC2STR(sm->addr),
 234                    broadcast ? "broadcast" : "unicast", idx);
 235         ieee802_1x_send(hapd, sta, IEEE802_1X_TYPE_EAPOL_KEY, (u8 *) key, len);
 236         if (sta->eapol_sm)
 237                 sta->eapol_sm->dot1xAuthEapolFramesTx++;
 238         os_free(buf);
 239 }
 240
 241
 242 static void ieee802_1x_tx_key(struct hostapd_data *hapd, struct sta_info *sta)
 243 {
 244         struct eapol_authenticator *eapol = hapd->eapol_auth;
 245         struct eapol_state_machine *sm = sta->eapol_sm;
 246
 247         if (sm == NULL || !sm->eap_if->eapKeyData)
 248                 return;
 249
 250         wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key(s) to " MACSTR,
 251                    MAC2STR(sta->addr));
 252
 253 #ifndef CONFIG_NO_VLAN
 254         if (sta->vlan_id > 0) {
 255                 wpa_printf(MSG_ERROR, "Using WEP with vlans is not supported.");
 256                 return;
 257         }
 258 #endif /* CONFIG_NO_VLAN */
 259
 260         if (eapol->default_wep_key) {
 261                 ieee802_1x_tx_key_one(hapd, sta, eapol->default_wep_key_idx, 1,
 262                                       eapol->default_wep_key,
 263                                       hapd->conf->default_wep_key_len);
 264         }
 265
 266         if (hapd->conf->individual_wep_key_len > 0) {
 267                 u8 *ikey;
 268                 ikey = os_malloc(hapd->conf->individual_wep_key_len);
 269                 if (ikey == NULL ||
 270                     random_get_bytes(ikey, hapd->conf->individual_wep_key_len))
 271                 {
 272                         wpa_printf(MSG_ERROR, "Could not generate random "
 273                                    "individual WEP key.");
 274                         os_free(ikey);
 275                         return;
 276                 }
 277
 278                 wpa_hexdump_key(MSG_DEBUG, "Individual WEP key",
 279                                 ikey, hapd->conf->individual_wep_key_len);
 280
 281                 ieee802_1x_tx_key_one(hapd, sta, 0, 0, ikey,
 282                                       hapd->conf->individual_wep_key_len);
 283
 284                 /* TODO: set encryption in TX callback, i.e., only after STA
 285                  * has ACKed EAPOL-Key frame */
 286                 if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
 287                                         sta->addr, 0, 1, NULL, 0, ikey,
 288                                         hapd->conf->individual_wep_key_len)) {
 289                         wpa_printf(MSG_ERROR, "Could not set individual WEP "
 290                                    "encryption.");
 291                 }
 292
 293                 os_free(ikey);
 294         }
 295 }
 296
 297 #endif /* CONFIG_NO_RC4 */
 298 #endif /* CONFIG_FIPS */
 299
 300
 301 const char *radius_mode_txt(struct hostapd_data *hapd)
 302 {
 303         switch (hapd->iface->conf->hw_mode) {
 304         case HOSTAPD_MODE_IEEE80211AD:
 305                 return "802.11ad";
 306         case HOSTAPD_MODE_IEEE80211A:
 307                 return "802.11a";
 308         case HOSTAPD_MODE_IEEE80211G:
 309                 return "802.11g";
 310         case HOSTAPD_MODE_IEEE80211B:
 311         default:
 312                 return "802.11b";
 313         }
 314 }
 315
 316
 317 int radius_sta_rate(struct hostapd_data *hapd, struct sta_info *sta)
 318 {
 319         int i;
 320         u8 rate = 0;
 321
 322         for (i = 0; i < sta->supported_rates_len; i++)
 323                 if ((sta->supported_rates[i] & 0x7f) > rate)
 324                         rate = sta->supported_rates[i] & 0x7f;
 325
 326         return rate;
 327 }
 328
 329
 330 #ifndef CONFIG_NO_RADIUS
 331 static void ieee802_1x_learn_identity(struct hostapd_data *hapd,
 332                                       struct eapol_state_machine *sm,
 333                                       const u8 *eap, size_t len)
 334 {
 335         const u8 *identity;
 336         size_t identity_len;
 337         const struct eap_hdr *hdr = (const struct eap_hdr *) eap;
 338
 339         if (len <= sizeof(struct eap_hdr) ||
 340             (hdr->code == EAP_CODE_RESPONSE &&
 341              eap[sizeof(struct eap_hdr)] != EAP_TYPE_IDENTITY) ||
 342             (hdr->code == EAP_CODE_INITIATE &&
 343              eap[sizeof(struct eap_hdr)] != EAP_ERP_TYPE_REAUTH) ||
 344             (hdr->code != EAP_CODE_RESPONSE &&
 345              hdr->code != EAP_CODE_INITIATE))
 346                 return;
 347
 348         eap_erp_update_identity(sm->eap, eap, len);
 349         identity = eap_get_identity(sm->eap, &identity_len);
 350         if (identity == NULL)
 351                 return;
 352
 353         /* Save station identity for future RADIUS packets */
 354         os_free(sm->identity);
 355         sm->identity = (u8 *) dup_binstr(identity, identity_len);
 356         if (sm->identity == NULL) {
 357                 sm->identity_len = 0;
 358                 return;
 359         }
 360
 361         sm->identity_len = identity_len;
 362         hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
 363                        HOSTAPD_LEVEL_DEBUG, "STA identity '%s'", sm->identity);
 364         sm->dot1xAuthEapolRespIdFramesRx++;
 365 }
 366
 367
 368 static int add_common_radius_sta_attr_rsn(struct hostapd_data *hapd,
 369                                           struct hostapd_radius_attr *req_attr,
 370                                           struct sta_info *sta,
 371                                           struct radius_msg *msg)
 372 {
 373         u32 suite;
 374         int ver, val;
 375
 376         ver = wpa_auth_sta_wpa_version(sta->wpa_sm);
 377         val = wpa_auth_get_pairwise(sta->wpa_sm);
 378         suite = wpa_cipher_to_suite(ver, val);
 379         if (val != -1 &&
 380             !hostapd_config_get_radius_attr(req_attr,
 381                                             RADIUS_ATTR_WLAN_PAIRWISE_CIPHER) &&
 382             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_PAIRWISE_CIPHER,
 383                                        suite)) {
 384                 wpa_printf(MSG_ERROR, "Could not add WLAN-Pairwise-Cipher");
 385                 return -1;
 386         }
 387
 388         suite = wpa_cipher_to_suite(((hapd->conf->wpa & 0x2) ||
 389                                      hapd->conf->osen) ?
 390                                     WPA_PROTO_RSN : WPA_PROTO_WPA,
 391                                     hapd->conf->wpa_group);
 392         if (!hostapd_config_get_radius_attr(req_attr,
 393                                             RADIUS_ATTR_WLAN_GROUP_CIPHER) &&
 394             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_GROUP_CIPHER,
 395                                        suite)) {
 396                 wpa_printf(MSG_ERROR, "Could not add WLAN-Group-Cipher");
 397                 return -1;
 398         }
 399
 400         val = wpa_auth_sta_key_mgmt(sta->wpa_sm);
 401         suite = wpa_akm_to_suite(val);
 402         if (val != -1 &&
 403             !hostapd_config_get_radius_attr(req_attr,
 404                                             RADIUS_ATTR_WLAN_AKM_SUITE) &&
 405             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_AKM_SUITE,
 406                                        suite)) {
 407                 wpa_printf(MSG_ERROR, "Could not add WLAN-AKM-Suite");
 408                 return -1;
 409         }
 410
 411 #ifdef CONFIG_IEEE80211W
 412         if (hapd->conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
 413                 suite = wpa_cipher_to_suite(WPA_PROTO_RSN,
 414                                             hapd->conf->group_mgmt_cipher);
 415                 if (!hostapd_config_get_radius_attr(
 416                             req_attr, RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER) &&
 417                     !radius_msg_add_attr_int32(
 418                             msg, RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER, suite)) {
 419                         wpa_printf(MSG_ERROR,
 420                                    "Could not add WLAN-Group-Mgmt-Cipher");
 421                         return -1;
 422                 }
 423         }
 424 #endif /* CONFIG_IEEE80211W */
 425
 426         return 0;
 427 }
 428
 429
 430 static int add_common_radius_sta_attr(struct hostapd_data *hapd,
 431                                       struct hostapd_radius_attr *req_attr,
 432                                       struct sta_info *sta,
 433                                       struct radius_msg *msg)
 434 {
 435         char buf[128];
 436
 437         if (!hostapd_config_get_radius_attr(req_attr,
 438                                             RADIUS_ATTR_SERVICE_TYPE) &&
 439             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_SERVICE_TYPE,
 440                                        RADIUS_SERVICE_TYPE_FRAMED)) {
 441                 wpa_printf(MSG_ERROR, "Could not add Service-Type");
 442                 return -1;
 443         }
 444
 445         if (!hostapd_config_get_radius_attr(req_attr,
 446                                             RADIUS_ATTR_NAS_PORT) &&
 447             sta->aid > 0 &&
 448             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT, sta->aid)) {
 449                 wpa_printf(MSG_ERROR, "Could not add NAS-Port");
 450                 return -1;
 451         }
 452
 453         os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
 454                     MAC2STR(sta->addr));
 455         buf[sizeof(buf) - 1] = '\0';
 456         if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
 457                                  (u8 *) buf, os_strlen(buf))) {
 458                 wpa_printf(MSG_ERROR, "Could not add Calling-Station-Id");
 459                 return -1;
 460         }
 461
 462         if (sta->flags & WLAN_STA_PREAUTH) {
 463                 os_strlcpy(buf, "IEEE 802.11i Pre-Authentication",
 464                            sizeof(buf));
 465         } else {
 466                 os_snprintf(buf, sizeof(buf), "CONNECT %d%sMbps %s",
 467                             radius_sta_rate(hapd, sta) / 2,
 468                             (radius_sta_rate(hapd, sta) & 1) ? ".5" : "",
 469                             radius_mode_txt(hapd));
 470                 buf[sizeof(buf) - 1] = '\0';
 471         }
 472         if (!hostapd_config_get_radius_attr(req_attr,
 473                                             RADIUS_ATTR_CONNECT_INFO) &&
 474             !radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
 475                                  (u8 *) buf, os_strlen(buf))) {
 476                 wpa_printf(MSG_ERROR, "Could not add Connect-Info");
 477                 return -1;
 478         }
 479
 480         if (sta->acct_session_id) {
 481                 os_snprintf(buf, sizeof(buf), "%016llX",
 482                             (unsigned long long) sta->acct_session_id);
 483                 if (!radius_msg_add_attr(msg, RADIUS_ATTR_ACCT_SESSION_ID,
 484                                          (u8 *) buf, os_strlen(buf))) {
 485                         wpa_printf(MSG_ERROR, "Could not add Acct-Session-Id");
 486                         return -1;
 487                 }
 488         }
 489
 490         if ((hapd->conf->wpa & 2) &&
 491             !hapd->conf->disable_pmksa_caching &&
 492             sta->eapol_sm && sta->eapol_sm->acct_multi_session_id) {
 493                 os_snprintf(buf, sizeof(buf), "%016llX",
 494                             (unsigned long long)
 495                             sta->eapol_sm->acct_multi_session_id);
 496                 if (!radius_msg_add_attr(
 497                             msg, RADIUS_ATTR_ACCT_MULTI_SESSION_ID,
 498                             (u8 *) buf, os_strlen(buf))) {
 499                         wpa_printf(MSG_INFO,
 500                                    "Could not add Acct-Multi-Session-Id");
 501                         return -1;
 502                 }
 503         }
 504
 505 #ifdef CONFIG_IEEE80211R_AP
 506         if (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) &&
 507             sta->wpa_sm &&
 508             (wpa_key_mgmt_ft(wpa_auth_sta_key_mgmt(sta->wpa_sm)) ||
 509              sta->auth_alg == WLAN_AUTH_FT) &&
 510             !hostapd_config_get_radius_attr(req_attr,
 511                                             RADIUS_ATTR_MOBILITY_DOMAIN_ID) &&
 512             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_MOBILITY_DOMAIN_ID,
 513                                        WPA_GET_BE16(
 514                                                hapd->conf->mobility_domain))) {
 515                 wpa_printf(MSG_ERROR, "Could not add Mobility-Domain-Id");
 516                 return -1;
 517         }
 518 #endif /* CONFIG_IEEE80211R_AP */
 519
 520         if ((hapd->conf->wpa || hapd->conf->osen) && sta->wpa_sm &&
 521             add_common_radius_sta_attr_rsn(hapd, req_attr, sta, msg) < 0)
 522                 return -1;
 523
 524         return 0;
 525 }
 526
 527
 528 int add_common_radius_attr(struct hostapd_data *hapd,
 529                            struct hostapd_radius_attr *req_attr,
 530                            struct sta_info *sta,
 531                            struct radius_msg *msg)
 532 {
 533         char buf[128];
 534         struct hostapd_radius_attr *attr;
 535         int len;
 536
 537         if (!hostapd_config_get_radius_attr(req_attr,
 538                                             RADIUS_ATTR_NAS_IP_ADDRESS) &&
 539             hapd->conf->own_ip_addr.af == AF_INET &&
 540             !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
 541                                  (u8 *) &hapd->conf->own_ip_addr.u.v4, 4)) {
 542                 wpa_printf(MSG_ERROR, "Could not add NAS-IP-Address");
 543                 return -1;
 544         }
 545
 546 #ifdef CONFIG_IPV6
 547         if (!hostapd_config_get_radius_attr(req_attr,
 548                                             RADIUS_ATTR_NAS_IPV6_ADDRESS) &&
 549             hapd->conf->own_ip_addr.af == AF_INET6 &&
 550             !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IPV6_ADDRESS,
 551                                  (u8 *) &hapd->conf->own_ip_addr.u.v6, 16)) {
 552                 wpa_printf(MSG_ERROR, "Could not add NAS-IPv6-Address");
 553                 return -1;
 554         }
 555 #endif /* CONFIG_IPV6 */
 556
 557         if (!hostapd_config_get_radius_attr(req_attr,
 558                                             RADIUS_ATTR_NAS_IDENTIFIER) &&
 559             hapd->conf->nas_identifier &&
 560             !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IDENTIFIER,
 561                                  (u8 *) hapd->conf->nas_identifier,
 562                                  os_strlen(hapd->conf->nas_identifier))) {
 563                 wpa_printf(MSG_ERROR, "Could not add NAS-Identifier");
 564                 return -1;
 565         }
 566
 567         len = os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT ":",
 568                           MAC2STR(hapd->own_addr));
 569         os_memcpy(&buf[len], hapd->conf->ssid.ssid,
 570                   hapd->conf->ssid.ssid_len);
 571         len += hapd->conf->ssid.ssid_len;
 572         if (!hostapd_config_get_radius_attr(req_attr,
 573                                             RADIUS_ATTR_CALLED_STATION_ID) &&
 574             !radius_msg_add_attr(msg, RADIUS_ATTR_CALLED_STATION_ID,
 575                                  (u8 *) buf, len)) {
 576                 wpa_printf(MSG_ERROR, "Could not add Called-Station-Id");
 577                 return -1;
 578         }
 579
 580         if (!hostapd_config_get_radius_attr(req_attr,
 581                                             RADIUS_ATTR_NAS_PORT_TYPE) &&
 582             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
 583                                        RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
 584                 wpa_printf(MSG_ERROR, "Could not add NAS-Port-Type");
 585                 return -1;
 586         }
 587
 588 #ifdef CONFIG_INTERWORKING
 589         if (hapd->conf->interworking &&
 590             !is_zero_ether_addr(hapd->conf->hessid)) {
 591                 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
 592                             MAC2STR(hapd->conf->hessid));
 593                 buf[sizeof(buf) - 1] = '\0';
 594                 if (!hostapd_config_get_radius_attr(req_attr,
 595                                                     RADIUS_ATTR_WLAN_HESSID) &&
 596                     !radius_msg_add_attr(msg, RADIUS_ATTR_WLAN_HESSID,
 597                                          (u8 *) buf, os_strlen(buf))) {
 598                         wpa_printf(MSG_ERROR, "Could not add WLAN-HESSID");
 599                         return -1;
 600                 }
 601         }
 602 #endif /* CONFIG_INTERWORKING */
 603
 604         if (sta && add_common_radius_sta_attr(hapd, req_attr, sta, msg) < 0)
 605                 return -1;
 606
 607         for (attr = req_attr; attr; attr = attr->next) {
 608                 if (!radius_msg_add_attr(msg, attr->type,
 609                                          wpabuf_head(attr->val),
 610                                          wpabuf_len(attr->val))) {
 611                         wpa_printf(MSG_ERROR, "Could not add RADIUS "
 612                                    "attribute");
 613                         return -1;
 614                 }
 615         }
 616
 617         return 0;
 618 }
 619
 620
 621 int add_sqlite_radius_attr(struct hostapd_data *hapd, struct sta_info *sta,
 622                            struct radius_msg *msg, int acct)
 623 {
 624 #ifdef CONFIG_SQLITE
 625         const char *attrtxt;
 626         char addrtxt[3 * ETH_ALEN];
 627         char *sql;
 628         sqlite3_stmt *stmt = NULL;
 629
 630         if (!hapd->rad_attr_db)
 631                 return 0;
 632
 633         os_snprintf(addrtxt, sizeof(addrtxt), MACSTR, MAC2STR(sta->addr));
 634
 635         sql = "SELECT attr FROM radius_attributes WHERE sta=? AND (reqtype=? OR reqtype IS NULL);";
 636         if (sqlite3_prepare_v2(hapd->rad_attr_db, sql, os_strlen(sql), &stmt,
 637                                NULL) != SQLITE_OK) {
 638                 wpa_printf(MSG_ERROR, "DB: Failed to prepare SQL statement: %s",
 639                            sqlite3_errmsg(hapd->rad_attr_db));
 640                 return -1;
 641         }
 642         sqlite3_bind_text(stmt, 1, addrtxt, os_strlen(addrtxt), SQLITE_STATIC);
 643         sqlite3_bind_text(stmt, 2, acct ? "acct" : "auth", 4, SQLITE_STATIC);
 644         while (sqlite3_step(stmt) == SQLITE_ROW) {
 645                 struct hostapd_radius_attr *attr;
 646                 struct radius_attr_hdr *hdr;
 647
 648                 attrtxt = (const char *) sqlite3_column_text(stmt, 0);
 649                 attr = hostapd_parse_radius_attr(attrtxt);
 650                 if (!attr) {
 651                         wpa_printf(MSG_ERROR,
 652                                    "Skipping invalid attribute from SQL: %s",
 653                                    attrtxt);
 654                         continue;
 655                 }
 656                 wpa_printf(MSG_DEBUG, "Adding RADIUS attribute from SQL: %s",
 657                            attrtxt);
 658                 hdr = radius_msg_add_attr(msg, attr->type,
 659                                           wpabuf_head(attr->val),
 660                                           wpabuf_len(attr->val));
 661                 hostapd_config_free_radius_attr(attr);
 662                 if (!hdr) {
 663                         wpa_printf(MSG_ERROR,
 664                                    "Could not add RADIUS attribute from SQL");
 665                         continue;
 666                 }
 667         }
 668
 669         sqlite3_reset(stmt);
 670         sqlite3_clear_bindings(stmt);
 671         sqlite3_finalize(stmt);
 672 #endif /* CONFIG_SQLITE */
 673
 674         return 0;
 675 }
 676
 677
 678 void ieee802_1x_encapsulate_radius(struct hostapd_data *hapd,
 679                                    struct sta_info *sta,
 680                                    const u8 *eap, size_t len)
 681 {
 682         struct radius_msg *msg;
 683         struct eapol_state_machine *sm = sta->eapol_sm;
 684
 685         if (sm == NULL)
 686                 return;
 687
 688         ieee802_1x_learn_identity(hapd, sm, eap, len);
 689
 690         wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
 691                    "packet");
 692
 693         sm->radius_identifier = radius_client_get_id(hapd->radius);
 694         msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
 695                              sm->radius_identifier);
 696         if (msg == NULL) {
 697                 wpa_printf(MSG_INFO, "Could not create new RADIUS packet");
 698                 return;
 699         }
 700
 701         if (radius_msg_make_authenticator(msg) < 0) {
 702                 wpa_printf(MSG_INFO, "Could not make Request Authenticator");
 703                 goto fail;
 704         }
 705
 706         if (sm->identity &&
 707             !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
 708                                  sm->identity, sm->identity_len)) {
 709                 wpa_printf(MSG_INFO, "Could not add User-Name");
 710                 goto fail;
 711         }
 712
 713         if (add_common_radius_attr(hapd, hapd->conf->radius_auth_req_attr, sta,
 714                                    msg) < 0)
 715                 goto fail;
 716
 717         if (sta && add_sqlite_radius_attr(hapd, sta, msg, 0) < 0)
 718                 goto fail;
 719
 720         /* TODO: should probably check MTU from driver config; 2304 is max for
 721          * IEEE 802.11, but use 1400 to avoid problems with too large packets
 722          */
 723         if (!hostapd_config_get_radius_attr(hapd->conf->radius_auth_req_attr,
 724                                             RADIUS_ATTR_FRAMED_MTU) &&
 725             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
 726                 wpa_printf(MSG_INFO, "Could not add Framed-MTU");
 727                 goto fail;
 728         }
 729
 730         if (!radius_msg_add_eap(msg, eap, len)) {
 731                 wpa_printf(MSG_INFO, "Could not add EAP-Message");
 732                 goto fail;
 733         }
 734
 735         /* State attribute must be copied if and only if this packet is
 736          * Access-Request reply to the previous Access-Challenge */
 737         if (sm->last_recv_radius &&
 738             radius_msg_get_hdr(sm->last_recv_radius)->code ==
 739             RADIUS_CODE_ACCESS_CHALLENGE) {
 740                 int res = radius_msg_copy_attr(msg, sm->last_recv_radius,
 741                                                RADIUS_ATTR_STATE);
 742                 if (res < 0) {
 743                         wpa_printf(MSG_INFO, "Could not copy State attribute from previous Access-Challenge");
 744                         goto fail;
 745                 }
 746                 if (res > 0) {
 747                         wpa_printf(MSG_DEBUG, "Copied RADIUS State Attribute");
 748                 }
 749         }
 750
 751         if (hapd->conf->radius_request_cui) {
 752                 const u8 *cui;
 753                 size_t cui_len;
 754                 /* Add previously learned CUI or nul CUI to request CUI */
 755                 if (sm->radius_cui) {
 756                         cui = wpabuf_head(sm->radius_cui);
 757                         cui_len = wpabuf_len(sm->radius_cui);
 758                 } else {
 759                         cui = (const u8 *) "\0";
 760                         cui_len = 1;
 761                 }
 762                 if (!radius_msg_add_attr(msg,
 763                                          RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
 764                                          cui, cui_len)) {
 765                         wpa_printf(MSG_ERROR, "Could not add CUI");
 766                         goto fail;
 767                 }
 768         }
 769
 770 #ifdef CONFIG_HS20
 771         if (hapd->conf->hs20) {
 772                 u8 ver = hapd->conf->hs20_release - 1;
 773
 774                 if (!radius_msg_add_wfa(
 775                             msg, RADIUS_VENDOR_ATTR_WFA_HS20_AP_VERSION,
 776                             &ver, 1)) {
 777                         wpa_printf(MSG_ERROR, "Could not add HS 2.0 AP "
 778                                    "version");
 779                         goto fail;
 780                 }
 781
 782                 if (sta->hs20_ie && wpabuf_len(sta->hs20_ie) > 0) {
 783                         const u8 *pos;
 784                         u8 buf[3];
 785                         u16 id;
 786                         pos = wpabuf_head_u8(sta->hs20_ie);
 787                         buf[0] = (*pos) >> 4;
 788                         if (((*pos) & HS20_PPS_MO_ID_PRESENT) &&
 789                             wpabuf_len(sta->hs20_ie) >= 3)
 790                                 id = WPA_GET_LE16(pos + 1);
 791                         else
 792                                 id = 0;
 793                         WPA_PUT_BE16(buf + 1, id);
 794                         if (!radius_msg_add_wfa(
 795                                     msg,
 796                                     RADIUS_VENDOR_ATTR_WFA_HS20_STA_VERSION,
 797                                     buf, sizeof(buf))) {
 798                                 wpa_printf(MSG_ERROR, "Could not add HS 2.0 "
 799                                            "STA version");
 800                                 goto fail;
 801                         }
 802                 }
 803
 804                 if (sta->roaming_consortium &&
 805                     !radius_msg_add_wfa(
 806                             msg, RADIUS_VENDOR_ATTR_WFA_HS20_ROAMING_CONSORTIUM,
 807                             wpabuf_head(sta->roaming_consortium),
 808                             wpabuf_len(sta->roaming_consortium))) {
 809                         wpa_printf(MSG_ERROR,
 810                                    "Could not add HS 2.0 Roaming Consortium");
 811                         goto fail;
 812                 }
 813
 814                 if (hapd->conf->t_c_filename) {
 815                         be32 timestamp;
 816
 817                         if (!radius_msg_add_wfa(
 818                                     msg,
 819                                     RADIUS_VENDOR_ATTR_WFA_HS20_T_C_FILENAME,
 820                                     (const u8 *) hapd->conf->t_c_filename,
 821                                     os_strlen(hapd->conf->t_c_filename))) {
 822                                 wpa_printf(MSG_ERROR,
 823                                            "Could not add HS 2.0 T&C Filename");
 824                                 goto fail;
 825                         }
 826
 827                         timestamp = host_to_be32(hapd->conf->t_c_timestamp);
 828                         if (!radius_msg_add_wfa(
 829                                     msg,
 830                                     RADIUS_VENDOR_ATTR_WFA_HS20_TIMESTAMP,
 831                                     (const u8 *) &timestamp,
 832                                     sizeof(timestamp))) {
 833                                 wpa_printf(MSG_ERROR,
 834                                            "Could not add HS 2.0 Timestamp");
 835                                 goto fail;
 836                         }
 837                 }
 838         }
 839 #endif /* CONFIG_HS20 */
 840
 841         if (radius_client_send(hapd->radius, msg, RADIUS_AUTH, sta->addr) < 0)
 842                 goto fail;
 843
 844         return;
 845
 846  fail:
 847         radius_msg_free(msg);
 848 }
 849 #endif /* CONFIG_NO_RADIUS */
 850
 851
 852 static void handle_eap_response(struct hostapd_data *hapd,
 853                                 struct sta_info *sta, struct eap_hdr *eap,
 854                                 size_t len)
 855 {
 856         u8 type, *data;
 857         struct eapol_state_machine *sm = sta->eapol_sm;
 858         if (sm == NULL)
 859                 return;
 860
 861         data = (u8 *) (eap + 1);
 862
 863         if (len < sizeof(*eap) + 1) {
 864                 wpa_printf(MSG_INFO, "handle_eap_response: too short response data");
 865                 return;
 866         }
 867
 868         sm->eap_type_supp = type = data[0];
 869
 870         hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
 871                        HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
 872                        "id=%d len=%d) from STA: EAP Response-%s (%d)",
 873                        eap->code, eap->identifier, be_to_host16(eap->length),
 874                        eap_server_get_name(0, type), type);
 875
 876         sm->dot1xAuthEapolRespFramesRx++;
 877
 878         wpabuf_free(sm->eap_if->eapRespData);
 879         sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
 880         sm->eapolEap = TRUE;
 881 }
 882
 883
 884 static void handle_eap_initiate(struct hostapd_data *hapd,
 885                                 struct sta_info *sta, struct eap_hdr *eap,
 886                                 size_t len)
 887 {
 888 #ifdef CONFIG_ERP
 889         u8 type, *data;
 890         struct eapol_state_machine *sm = sta->eapol_sm;
 891
 892         if (sm == NULL)
 893                 return;
 894
 895         if (len < sizeof(*eap) + 1) {
 896                 wpa_printf(MSG_INFO,
 897                            "handle_eap_initiate: too short response data");
 898                 return;
 899         }
 900
 901         data = (u8 *) (eap + 1);
 902         type = data[0];
 903
 904         hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
 905                        HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
 906                        "id=%d len=%d) from STA: EAP Initiate type %u",
 907                        eap->code, eap->identifier, be_to_host16(eap->length),
 908                        type);
 909
 910         wpabuf_free(sm->eap_if->eapRespData);
 911         sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
 912         sm->eapolEap = TRUE;
 913 #endif /* CONFIG_ERP */
 914 }
 915
 916
 917 /* Process incoming EAP packet from Supplicant */
 918 static void handle_eap(struct hostapd_data *hapd, struct sta_info *sta,
 919                        u8 *buf, size_t len)
 920 {
 921         struct eap_hdr *eap;
 922         u16 eap_len;
 923
 924         if (len < sizeof(*eap)) {
 925                 wpa_printf(MSG_INFO, "   too short EAP packet");
 926                 return;
 927         }
 928
 929         eap = (struct eap_hdr *) buf;
 930
 931         eap_len = be_to_host16(eap->length);
 932         wpa_printf(MSG_DEBUG, "EAP: code=%d identifier=%d length=%d",
 933                    eap->code, eap->identifier, eap_len);
 934         if (eap_len < sizeof(*eap)) {
 935                 wpa_printf(MSG_DEBUG, "   Invalid EAP length");
 936                 return;
 937         } else if (eap_len > len) {
 938                 wpa_printf(MSG_DEBUG, "   Too short frame to contain this EAP "
 939                            "packet");
 940                 return;
 941         } else if (eap_len < len) {
 942                 wpa_printf(MSG_DEBUG, "   Ignoring %lu extra bytes after EAP "
 943                            "packet", (unsigned long) len - eap_len);
 944         }
 945
 946         switch (eap->code) {
 947         case EAP_CODE_REQUEST:
 948                 wpa_printf(MSG_DEBUG, " (request)");
 949                 return;
 950         case EAP_CODE_RESPONSE:
 951                 wpa_printf(MSG_DEBUG, " (response)");
 952                 handle_eap_response(hapd, sta, eap, eap_len);
 953                 break;
 954         case EAP_CODE_SUCCESS:
 955                 wpa_printf(MSG_DEBUG, " (success)");
 956                 return;
 957         case EAP_CODE_FAILURE:
 958                 wpa_printf(MSG_DEBUG, " (failure)");
 959                 return;
 960         case EAP_CODE_INITIATE:
 961                 wpa_printf(MSG_DEBUG, " (initiate)");
 962                 handle_eap_initiate(hapd, sta, eap, eap_len);
 963                 break;
 964         case EAP_CODE_FINISH:
 965                 wpa_printf(MSG_DEBUG, " (finish)");
 966                 break;
 967         default:
 968                 wpa_printf(MSG_DEBUG, " (unknown code)");
 969                 return;
 970         }
 971 }
 972
 973
 974 struct eapol_state_machine *
 975 ieee802_1x_alloc_eapol_sm(struct hostapd_data *hapd, struct sta_info *sta)
 976 {
 977         int flags = 0;
 978         if (sta->flags & WLAN_STA_PREAUTH)
 979                 flags |= EAPOL_SM_PREAUTH;
 980         if (sta->wpa_sm) {
 981                 flags |= EAPOL_SM_USES_WPA;
 982                 if (wpa_auth_sta_get_pmksa(sta->wpa_sm))
 983                         flags |= EAPOL_SM_FROM_PMKSA_CACHE;
 984         }
 985         return eapol_auth_alloc(hapd->eapol_auth, sta->addr, flags,
 986                                 sta->wps_ie, sta->p2p_ie, sta,
 987                                 sta->identity, sta->radius_cui);
 988 }
 989
 990
 991 static void ieee802_1x_save_eapol(struct sta_info *sta, const u8 *buf,
 992                                   size_t len)
 993 {
 994         if (sta->pending_eapol_rx) {
 995                 wpabuf_free(sta->pending_eapol_rx->buf);
 996         } else {
 997                 sta->pending_eapol_rx =
 998                         os_malloc(sizeof(*sta->pending_eapol_rx));
 999                 if (!sta->pending_eapol_rx)
1000                         return;
1001         }
1002
1003         sta->pending_eapol_rx->buf = wpabuf_alloc_copy(buf, len);
1004         if (!sta->pending_eapol_rx->buf) {
1005                 os_free(sta->pending_eapol_rx);
1006                 sta->pending_eapol_rx = NULL;
1007                 return;
1008         }
1009
1010         os_get_reltime(&sta->pending_eapol_rx->rx_time);
1011 }
1012
1013
1014 /**
1015  * ieee802_1x_receive - Process the EAPOL frames from the Supplicant
1016  * @hapd: hostapd BSS data
1017  * @sa: Source address (sender of the EAPOL frame)
1018  * @buf: EAPOL frame
1019  * @len: Length of buf in octets
1020  *
1021  * This function is called for each incoming EAPOL frame from the interface
1022  */
1023 void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf,
1024                         size_t len)
1025 {
1026         struct sta_info *sta;
1027         struct ieee802_1x_hdr *hdr;
1028         struct ieee802_1x_eapol_key *key;
1029         u16 datalen;
1030         struct rsn_pmksa_cache_entry *pmksa;
1031         int key_mgmt;
1032
1033         if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen &&
1034             !hapd->conf->wps_state)
1035                 return;
1036
1037         wpa_printf(MSG_DEBUG, "IEEE 802.1X: %lu bytes from " MACSTR,
1038                    (unsigned long) len, MAC2STR(sa));
1039         sta = ap_get_sta(hapd, sa);
1040         if (!sta || (!(sta->flags & (WLAN_STA_ASSOC | WLAN_STA_PREAUTH)) &&
1041                      !(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED))) {
1042                 wpa_printf(MSG_DEBUG, "IEEE 802.1X data frame from not "
1043                            "associated/Pre-authenticating STA");
1044
1045                 if (sta && (sta->flags & WLAN_STA_AUTH)) {
1046                         wpa_printf(MSG_DEBUG, "Saving EAPOL frame from " MACSTR
1047                                    " for later use", MAC2STR(sta->addr));
1048                         ieee802_1x_save_eapol(sta, buf, len);
1049                 }
1050
1051                 return;
1052         }
1053
1054         if (len < sizeof(*hdr)) {
1055                 wpa_printf(MSG_INFO, "   too short IEEE 802.1X packet");
1056                 return;
1057         }
1058
1059         hdr = (struct ieee802_1x_hdr *) buf;
1060         datalen = be_to_host16(hdr->length);
1061         wpa_printf(MSG_DEBUG, "   IEEE 802.1X: version=%d type=%d length=%d",
1062                    hdr->version, hdr->type, datalen);
1063
1064         if (len - sizeof(*hdr) < datalen) {
1065                 wpa_printf(MSG_INFO, "   frame too short for this IEEE 802.1X packet");
1066                 if (sta->eapol_sm)
1067                         sta->eapol_sm->dot1xAuthEapLengthErrorFramesRx++;
1068                 return;
1069         }
1070         if (len - sizeof(*hdr) > datalen) {
1071                 wpa_printf(MSG_DEBUG, "   ignoring %lu extra octets after "
1072                            "IEEE 802.1X packet",
1073                            (unsigned long) len - sizeof(*hdr) - datalen);
1074         }
1075
1076         if (sta->eapol_sm) {
1077                 sta->eapol_sm->dot1xAuthLastEapolFrameVersion = hdr->version;
1078                 sta->eapol_sm->dot1xAuthEapolFramesRx++;
1079         }
1080
1081         key = (struct ieee802_1x_eapol_key *) (hdr + 1);
1082         if (datalen >= sizeof(struct ieee802_1x_eapol_key) &&
1083             hdr->type == IEEE802_1X_TYPE_EAPOL_KEY &&
1084             (key->type == EAPOL_KEY_TYPE_WPA ||
1085              key->type == EAPOL_KEY_TYPE_RSN)) {
1086                 wpa_receive(hapd->wpa_auth, sta->wpa_sm, (u8 *) hdr,
1087                             sizeof(*hdr) + datalen);
1088                 return;
1089         }
1090
1091         if (!hapd->conf->ieee802_1x && !hapd->conf->osen &&
1092             !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
1093                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
1094                            "802.1X not enabled and WPS not used");
1095                 return;
1096         }
1097
1098         key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
1099         if (key_mgmt != -1 &&
1100             (wpa_key_mgmt_wpa_psk(key_mgmt) || key_mgmt == WPA_KEY_MGMT_OWE ||
1101              key_mgmt == WPA_KEY_MGMT_DPP)) {
1102                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
1103                            "STA is using PSK");
1104                 return;
1105         }
1106
1107         if (!sta->eapol_sm) {
1108                 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
1109                 if (!sta->eapol_sm)
1110                         return;
1111
1112 #ifdef CONFIG_WPS
1113                 if (!hapd->conf->ieee802_1x && hapd->conf->wps_state) {
1114                         u32 wflags = sta->flags & (WLAN_STA_WPS |
1115                                                    WLAN_STA_WPS2 |
1116                                                    WLAN_STA_MAYBE_WPS);
1117                         if (wflags == WLAN_STA_MAYBE_WPS ||
1118                             wflags == (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) {
1119                                 /*
1120                                  * Delay EAPOL frame transmission until a
1121                                  * possible WPS STA initiates the handshake
1122                                  * with EAPOL-Start. Only allow the wait to be
1123                                  * skipped if the STA is known to support WPS
1124                                  * 2.0.
1125                                  */
1126                                 wpa_printf(MSG_DEBUG, "WPS: Do not start "
1127                                            "EAPOL until EAPOL-Start is "
1128                                            "received");
1129                                 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
1130                         }
1131                 }
1132 #endif /* CONFIG_WPS */
1133
1134                 sta->eapol_sm->eap_if->portEnabled = TRUE;
1135         }
1136
1137         /* since we support version 1, we can ignore version field and proceed
1138          * as specified in version 1 standard [IEEE Std 802.1X-2001, 7.5.5] */
1139         /* TODO: actually, we are not version 1 anymore.. However, Version 2
1140          * does not change frame contents, so should be ok to process frames
1141          * more or less identically. Some changes might be needed for
1142          * verification of fields. */
1143
1144         switch (hdr->type) {
1145         case IEEE802_1X_TYPE_EAP_PACKET:
1146                 handle_eap(hapd, sta, (u8 *) (hdr + 1), datalen);
1147                 break;
1148
1149         case IEEE802_1X_TYPE_EAPOL_START:
1150                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1151                                HOSTAPD_LEVEL_DEBUG, "received EAPOL-Start "
1152                                "from STA");
1153                 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
1154                 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
1155                 if (pmksa) {
1156                         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
1157                                        HOSTAPD_LEVEL_DEBUG, "cached PMKSA "
1158                                        "available - ignore it since "
1159                                        "STA sent EAPOL-Start");
1160                         wpa_auth_sta_clear_pmksa(sta->wpa_sm, pmksa);
1161                 }
1162                 sta->eapol_sm->eapolStart = TRUE;
1163                 sta->eapol_sm->dot1xAuthEapolStartFramesRx++;
1164                 eap_server_clear_identity(sta->eapol_sm->eap);
1165                 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
1166                 break;
1167
1168         case IEEE802_1X_TYPE_EAPOL_LOGOFF:
1169                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1170                                HOSTAPD_LEVEL_DEBUG, "received EAPOL-Logoff "
1171                                "from STA");
1172                 sta->acct_terminate_cause =
1173                         RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1174                 accounting_sta_stop(hapd, sta);
1175                 sta->eapol_sm->eapolLogoff = TRUE;
1176                 sta->eapol_sm->dot1xAuthEapolLogoffFramesRx++;
1177                 eap_server_clear_identity(sta->eapol_sm->eap);
1178                 break;
1179
1180         case IEEE802_1X_TYPE_EAPOL_KEY:
1181                 wpa_printf(MSG_DEBUG, "   EAPOL-Key");
1182                 if (!ap_sta_is_authorized(sta)) {
1183                         wpa_printf(MSG_DEBUG, "   Dropped key data from "
1184                                    "unauthorized Supplicant");
1185                         break;
1186                 }
1187                 break;
1188
1189         case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT:
1190                 wpa_printf(MSG_DEBUG, "   EAPOL-Encapsulated-ASF-Alert");
1191                 /* TODO: implement support for this; show data */
1192                 break;
1193
1194 #ifdef CONFIG_MACSEC
1195         case IEEE802_1X_TYPE_EAPOL_MKA:
1196                 wpa_printf(MSG_EXCESSIVE,
1197                            "EAPOL type %d will be handled by MKA", hdr->type);
1198                 break;
1199 #endif /* CONFIG_MACSEC */
1200
1201         default:
1202                 wpa_printf(MSG_DEBUG, "   unknown IEEE 802.1X packet type");
1203                 sta->eapol_sm->dot1xAuthInvalidEapolFramesRx++;
1204                 break;
1205         }
1206
1207         eapol_auth_step(sta->eapol_sm);
1208 }
1209
1210
1211 /**
1212  * ieee802_1x_new_station - Start IEEE 802.1X authentication
1213  * @hapd: hostapd BSS data
1214  * @sta: The station
1215  *
1216  * This function is called to start IEEE 802.1X authentication when a new
1217  * station completes IEEE 802.11 association.
1218  */
1219 void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta)
1220 {
1221         struct rsn_pmksa_cache_entry *pmksa;
1222         int reassoc = 1;
1223         int force_1x = 0;
1224         int key_mgmt;
1225
1226 #ifdef CONFIG_WPS
1227         if (hapd->conf->wps_state &&
1228             ((hapd->conf->wpa && (sta->flags & WLAN_STA_MAYBE_WPS)) ||
1229              (sta->flags & WLAN_STA_WPS))) {
1230                 /*
1231                  * Need to enable IEEE 802.1X/EAPOL state machines for possible
1232                  * WPS handshake even if IEEE 802.1X/EAPOL is not used for
1233                  * authentication in this BSS.
1234                  */
1235                 force_1x = 1;
1236         }
1237 #endif /* CONFIG_WPS */
1238
1239         if (!force_1x && !hapd->conf->ieee802_1x && !hapd->conf->osen) {
1240                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - "
1241                            "802.1X not enabled or forced for WPS");
1242                 /*
1243                  * Clear any possible EAPOL authenticator state to support
1244                  * reassociation change from WPS to PSK.
1245                  */
1246                 ieee802_1x_free_station(hapd, sta);
1247                 return;
1248         }
1249
1250         key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
1251         if (key_mgmt != -1 &&
1252             (wpa_key_mgmt_wpa_psk(key_mgmt) || key_mgmt == WPA_KEY_MGMT_OWE ||
1253              key_mgmt == WPA_KEY_MGMT_DPP)) {
1254                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - using PSK");
1255                 /*
1256                  * Clear any possible EAPOL authenticator state to support
1257                  * reassociation change from WPA-EAP to PSK.
1258                  */
1259                 ieee802_1x_free_station(hapd, sta);
1260                 return;
1261         }
1262
1263         if (sta->eapol_sm == NULL) {
1264                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1265                                HOSTAPD_LEVEL_DEBUG, "start authentication");
1266                 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
1267                 if (sta->eapol_sm == NULL) {
1268                         hostapd_logger(hapd, sta->addr,
1269                                        HOSTAPD_MODULE_IEEE8021X,
1270                                        HOSTAPD_LEVEL_INFO,
1271                                        "failed to allocate state machine");
1272                         return;
1273                 }
1274                 reassoc = 0;
1275         }
1276
1277 #ifdef CONFIG_WPS
1278         sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
1279         if (!hapd->conf->ieee802_1x && hapd->conf->wps_state &&
1280             !(sta->flags & WLAN_STA_WPS2)) {
1281                 /*
1282                  * Delay EAPOL frame transmission until a possible WPS STA
1283                  * initiates the handshake with EAPOL-Start. Only allow the
1284                  * wait to be skipped if the STA is known to support WPS 2.0.
1285                  */
1286                 wpa_printf(MSG_DEBUG, "WPS: Do not start EAPOL until "
1287                            "EAPOL-Start is received");
1288                 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
1289         }
1290 #endif /* CONFIG_WPS */
1291
1292         sta->eapol_sm->eap_if->portEnabled = TRUE;
1293
1294 #ifdef CONFIG_IEEE80211R_AP
1295         if (sta->auth_alg == WLAN_AUTH_FT) {
1296                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1297                                HOSTAPD_LEVEL_DEBUG,
1298                                "PMK from FT - skip IEEE 802.1X/EAP");
1299                 /* Setup EAPOL state machines to already authenticated state
1300                  * because of existing FT information from R0KH. */
1301                 sta->eapol_sm->keyRun = TRUE;
1302                 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1303                 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1304                 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1305                 sta->eapol_sm->authSuccess = TRUE;
1306                 sta->eapol_sm->authFail = FALSE;
1307                 sta->eapol_sm->portValid = TRUE;
1308                 if (sta->eapol_sm->eap)
1309                         eap_sm_notify_cached(sta->eapol_sm->eap);
1310                 ap_sta_bind_vlan(hapd, sta);
1311                 return;
1312         }
1313 #endif /* CONFIG_IEEE80211R_AP */
1314
1315 #ifdef CONFIG_FILS
1316         if (sta->auth_alg == WLAN_AUTH_FILS_SK ||
1317             sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
1318             sta->auth_alg == WLAN_AUTH_FILS_PK) {
1319                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1320                                HOSTAPD_LEVEL_DEBUG,
1321                                "PMK from FILS - skip IEEE 802.1X/EAP");
1322                 /* Setup EAPOL state machines to already authenticated state
1323                  * because of existing FILS information. */
1324                 sta->eapol_sm->keyRun = TRUE;
1325                 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1326                 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1327                 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1328                 sta->eapol_sm->authSuccess = TRUE;
1329                 sta->eapol_sm->authFail = FALSE;
1330                 sta->eapol_sm->portValid = TRUE;
1331                 if (sta->eapol_sm->eap)
1332                         eap_sm_notify_cached(sta->eapol_sm->eap);
1333                 wpa_auth_set_ptk_rekey_timer(sta->wpa_sm);
1334                 return;
1335         }
1336 #endif /* CONFIG_FILS */
1337
1338         pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
1339         if (pmksa) {
1340                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1341                                HOSTAPD_LEVEL_DEBUG,
1342                                "PMK from PMKSA cache - skip IEEE 802.1X/EAP");
1343                 /* Setup EAPOL state machines to already authenticated state
1344                  * because of existing PMKSA information in the cache. */
1345                 sta->eapol_sm->keyRun = TRUE;
1346                 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1347                 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1348                 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1349                 sta->eapol_sm->authSuccess = TRUE;
1350                 sta->eapol_sm->authFail = FALSE;
1351                 if (sta->eapol_sm->eap)
1352                         eap_sm_notify_cached(sta->eapol_sm->eap);
1353                 pmksa_cache_to_eapol_data(hapd, pmksa, sta->eapol_sm);
1354                 ap_sta_bind_vlan(hapd, sta);
1355         } else {
1356                 if (reassoc) {
1357                         /*
1358                          * Force EAPOL state machines to start
1359                          * re-authentication without having to wait for the
1360                          * Supplicant to send EAPOL-Start.
1361                          */
1362                         sta->eapol_sm->reAuthenticate = TRUE;
1363                 }
1364                 eapol_auth_step(sta->eapol_sm);
1365         }
1366 }
1367
1368
1369 void ieee802_1x_free_station(struct hostapd_data *hapd, struct sta_info *sta)
1370 {
1371         struct eapol_state_machine *sm = sta->eapol_sm;
1372
1373 #ifdef CONFIG_HS20
1374         eloop_cancel_timeout(ieee802_1x_wnm_notif_send, hapd, sta);
1375 #endif /* CONFIG_HS20 */
1376
1377         if (sta->pending_eapol_rx) {
1378                 wpabuf_free(sta->pending_eapol_rx->buf);
1379                 os_free(sta->pending_eapol_rx);
1380                 sta->pending_eapol_rx = NULL;
1381         }
1382
1383         if (sm == NULL)
1384                 return;
1385
1386         sta->eapol_sm = NULL;
1387
1388 #ifndef CONFIG_NO_RADIUS
1389         radius_msg_free(sm->last_recv_radius);
1390         radius_free_class(&sm->radius_class);
1391 #endif /* CONFIG_NO_RADIUS */
1392
1393         eapol_auth_free(sm);
1394 }
1395
1396
1397 #ifndef CONFIG_NO_RADIUS
1398 static void ieee802_1x_decapsulate_radius(struct hostapd_data *hapd,
1399                                           struct sta_info *sta)
1400 {
1401         struct wpabuf *eap;
1402         const struct eap_hdr *hdr;
1403         int eap_type = -1;
1404         char buf[64];
1405         struct radius_msg *msg;
1406         struct eapol_state_machine *sm = sta->eapol_sm;
1407
1408         if (sm == NULL || sm->last_recv_radius == NULL) {
1409                 if (sm)
1410                         sm->eap_if->aaaEapNoReq = TRUE;
1411                 return;
1412         }
1413
1414         msg = sm->last_recv_radius;
1415
1416         eap = radius_msg_get_eap(msg);
1417         if (eap == NULL) {
1418                 /* RFC 3579, Chap. 2.6.3:
1419                  * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
1420                  * attribute */
1421                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1422                                HOSTAPD_LEVEL_WARNING, "could not extract "
1423                                "EAP-Message from RADIUS message");
1424                 sm->eap_if->aaaEapNoReq = TRUE;
1425                 return;
1426         }
1427
1428         if (wpabuf_len(eap) < sizeof(*hdr)) {
1429                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1430                                HOSTAPD_LEVEL_WARNING, "too short EAP packet "
1431                                "received from authentication server");
1432                 wpabuf_free(eap);
1433                 sm->eap_if->aaaEapNoReq = TRUE;
1434                 return;
1435         }
1436
1437         if (wpabuf_len(eap) > sizeof(*hdr))
1438                 eap_type = (wpabuf_head_u8(eap))[sizeof(*hdr)];
1439
1440         hdr = wpabuf_head(eap);
1441         switch (hdr->code) {
1442         case EAP_CODE_REQUEST:
1443                 if (eap_type >= 0)
1444                         sm->eap_type_authsrv = eap_type;
1445                 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
1446                             eap_server_get_name(0, eap_type), eap_type);
1447                 break;
1448         case EAP_CODE_RESPONSE:
1449                 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
1450                             eap_server_get_name(0, eap_type), eap_type);
1451                 break;
1452         case EAP_CODE_SUCCESS:
1453                 os_strlcpy(buf, "EAP Success", sizeof(buf));
1454                 break;
1455         case EAP_CODE_FAILURE:
1456                 os_strlcpy(buf, "EAP Failure", sizeof(buf));
1457                 break;
1458         default:
1459                 os_strlcpy(buf, "unknown EAP code", sizeof(buf));
1460                 break;
1461         }
1462         buf[sizeof(buf) - 1] = '\0';
1463         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1464                        HOSTAPD_LEVEL_DEBUG, "decapsulated EAP packet (code=%d "
1465                        "id=%d len=%d) from RADIUS server: %s",
1466                        hdr->code, hdr->identifier, be_to_host16(hdr->length),
1467                        buf);
1468         sm->eap_if->aaaEapReq = TRUE;
1469
1470         wpabuf_free(sm->eap_if->aaaEapReqData);
1471         sm->eap_if->aaaEapReqData = eap;
1472 }
1473
1474
1475 static void ieee802_1x_get_keys(struct hostapd_data *hapd,
1476                                 struct sta_info *sta, struct radius_msg *msg,
1477                                 struct radius_msg *req,
1478                                 const u8 *shared_secret,
1479                                 size_t shared_secret_len)
1480 {
1481         struct radius_ms_mppe_keys *keys;
1482         u8 *buf;
1483         size_t len;
1484         struct eapol_state_machine *sm = sta->eapol_sm;
1485         if (sm == NULL)
1486                 return;
1487
1488         keys = radius_msg_get_ms_keys(msg, req, shared_secret,
1489                                       shared_secret_len);
1490
1491         if (keys && keys->send && keys->recv) {
1492                 len = keys->send_len + keys->recv_len;
1493                 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Send-Key",
1494                                 keys->send, keys->send_len);
1495                 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Recv-Key",
1496                                 keys->recv, keys->recv_len);
1497
1498                 os_free(sm->eap_if->aaaEapKeyData);
1499                 sm->eap_if->aaaEapKeyData = os_malloc(len);
1500                 if (sm->eap_if->aaaEapKeyData) {
1501                         os_memcpy(sm->eap_if->aaaEapKeyData, keys->recv,
1502                                   keys->recv_len);
1503                         os_memcpy(sm->eap_if->aaaEapKeyData + keys->recv_len,
1504                                   keys->send, keys->send_len);
1505                         sm->eap_if->aaaEapKeyDataLen = len;
1506                         sm->eap_if->aaaEapKeyAvailable = TRUE;
1507                 }
1508         } else {
1509                 wpa_printf(MSG_DEBUG,
1510                            "MS-MPPE: 1x_get_keys, could not get keys: %p  send: %p  recv: %p",
1511                            keys, keys ? keys->send : NULL,
1512                            keys ? keys->recv : NULL);
1513         }
1514
1515         if (keys) {
1516                 os_free(keys->send);
1517                 os_free(keys->recv);
1518                 os_free(keys);
1519         }
1520
1521         if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_EAP_KEY_NAME, &buf, &len,
1522                                     NULL) == 0) {
1523                 os_free(sm->eap_if->eapSessionId);
1524                 sm->eap_if->eapSessionId = os_memdup(buf, len);
1525                 if (sm->eap_if->eapSessionId) {
1526                         sm->eap_if->eapSessionIdLen = len;
1527                         wpa_hexdump(MSG_DEBUG, "EAP-Key Name",
1528                                     sm->eap_if->eapSessionId,
1529                                     sm->eap_if->eapSessionIdLen);
1530                 }
1531         } else {
1532                 sm->eap_if->eapSessionIdLen = 0;
1533         }
1534 }
1535
1536
1537 static void ieee802_1x_store_radius_class(struct hostapd_data *hapd,
1538                                           struct sta_info *sta,
1539                                           struct radius_msg *msg)
1540 {
1541         u8 *attr_class;
1542         size_t class_len;
1543         struct eapol_state_machine *sm = sta->eapol_sm;
1544         int count, i;
1545         struct radius_attr_data *nclass;
1546         size_t nclass_count;
1547
1548         if (!hapd->conf->radius->acct_server || hapd->radius == NULL ||
1549             sm == NULL)
1550                 return;
1551
1552         radius_free_class(&sm->radius_class);
1553         count = radius_msg_count_attr(msg, RADIUS_ATTR_CLASS, 1);
1554         if (count <= 0)
1555                 return;
1556
1557         nclass = os_calloc(count, sizeof(struct radius_attr_data));
1558         if (nclass == NULL)
1559                 return;
1560
1561         nclass_count = 0;
1562
1563         attr_class = NULL;
1564         for (i = 0; i < count; i++) {
1565                 do {
1566                         if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CLASS,
1567                                                     &attr_class, &class_len,
1568                                                     attr_class) < 0) {
1569                                 i = count;
1570                                 break;
1571                         }
1572                 } while (class_len < 1);
1573
1574                 nclass[nclass_count].data = os_memdup(attr_class, class_len);
1575                 if (nclass[nclass_count].data == NULL)
1576                         break;
1577
1578                 nclass[nclass_count].len = class_len;
1579                 nclass_count++;
1580         }
1581
1582         sm->radius_class.attr = nclass;
1583         sm->radius_class.count = nclass_count;
1584         wpa_printf(MSG_DEBUG, "IEEE 802.1X: Stored %lu RADIUS Class "
1585                    "attributes for " MACSTR,
1586                    (unsigned long) sm->radius_class.count,
1587                    MAC2STR(sta->addr));
1588 }
1589
1590
1591 /* Update sta->identity based on User-Name attribute in Access-Accept */
1592 static void ieee802_1x_update_sta_identity(struct hostapd_data *hapd,
1593                                            struct sta_info *sta,
1594                                            struct radius_msg *msg)
1595 {
1596         u8 *buf, *identity;
1597         size_t len;
1598         struct eapol_state_machine *sm = sta->eapol_sm;
1599
1600         if (sm == NULL)
1601                 return;
1602
1603         if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &buf, &len,
1604                                     NULL) < 0)
1605                 return;
1606
1607         identity = (u8 *) dup_binstr(buf, len);
1608         if (identity == NULL)
1609                 return;
1610
1611         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1612                        HOSTAPD_LEVEL_DEBUG, "old identity '%s' updated with "
1613                        "User-Name from Access-Accept '%s'",
1614                        sm->identity ? (char *) sm->identity : "N/A",
1615                        (char *) identity);
1616
1617         os_free(sm->identity);
1618         sm->identity = identity;
1619         sm->identity_len = len;
1620 }
1621
1622
1623 /* Update CUI based on Chargeable-User-Identity attribute in Access-Accept */
1624 static void ieee802_1x_update_sta_cui(struct hostapd_data *hapd,
1625                                       struct sta_info *sta,
1626                                       struct radius_msg *msg)
1627 {
1628         struct eapol_state_machine *sm = sta->eapol_sm;
1629         struct wpabuf *cui;
1630         u8 *buf;
1631         size_t len;
1632
1633         if (sm == NULL)
1634                 return;
1635
1636         if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
1637                                     &buf, &len, NULL) < 0)
1638                 return;
1639
1640         cui = wpabuf_alloc_copy(buf, len);
1641         if (cui == NULL)
1642                 return;
1643
1644         wpabuf_free(sm->radius_cui);
1645         sm->radius_cui = cui;
1646 }
1647
1648
1649 #ifdef CONFIG_HS20
1650
1651 static void ieee802_1x_hs20_sub_rem(struct sta_info *sta, u8 *pos, size_t len)
1652 {
1653         sta->remediation = 1;
1654         os_free(sta->remediation_url);
1655         if (len > 2) {
1656                 sta->remediation_url = os_malloc(len);
1657                 if (!sta->remediation_url)
1658                         return;
1659                 sta->remediation_method = pos[0];
1660                 os_memcpy(sta->remediation_url, pos + 1, len - 1);
1661                 sta->remediation_url[len - 1] = '\0';
1662                 wpa_printf(MSG_DEBUG, "HS 2.0: Subscription remediation needed "
1663                            "for " MACSTR " - server method %u URL %s",
1664                            MAC2STR(sta->addr), sta->remediation_method,
1665                            sta->remediation_url);
1666         } else {
1667                 sta->remediation_url = NULL;
1668                 wpa_printf(MSG_DEBUG, "HS 2.0: Subscription remediation needed "
1669                            "for " MACSTR, MAC2STR(sta->addr));
1670         }
1671         /* TODO: assign the STA into remediation VLAN or add filtering */
1672 }
1673
1674
1675 static void ieee802_1x_hs20_deauth_req(struct hostapd_data *hapd,
1676                                        struct sta_info *sta, u8 *pos,
1677                                        size_t len)
1678 {
1679         if (len < 3)
1680                 return; /* Malformed information */
1681         sta->hs20_deauth_requested = 1;
1682         wpa_printf(MSG_DEBUG, "HS 2.0: Deauthentication request - Code %u  "
1683                    "Re-auth Delay %u",
1684                    *pos, WPA_GET_LE16(pos + 1));
1685         wpabuf_free(sta->hs20_deauth_req);
1686         sta->hs20_deauth_req = wpabuf_alloc(len + 1);
1687         if (sta->hs20_deauth_req) {
1688                 wpabuf_put_data(sta->hs20_deauth_req, pos, 3);
1689                 wpabuf_put_u8(sta->hs20_deauth_req, len - 3);
1690                 wpabuf_put_data(sta->hs20_deauth_req, pos + 3, len - 3);
1691         }
1692         ap_sta_session_timeout(hapd, sta, hapd->conf->hs20_deauth_req_timeout);
1693 }
1694
1695
1696 static void ieee802_1x_hs20_session_info(struct hostapd_data *hapd,
1697                                          struct sta_info *sta, u8 *pos,
1698                                          size_t len, int session_timeout)
1699 {
1700         unsigned int swt;
1701         int warning_time, beacon_int;
1702
1703         if (len < 1)
1704                 return; /* Malformed information */
1705         os_free(sta->hs20_session_info_url);
1706         sta->hs20_session_info_url = os_malloc(len);
1707         if (sta->hs20_session_info_url == NULL)
1708                 return;
1709         swt = pos[0];
1710         os_memcpy(sta->hs20_session_info_url, pos + 1, len - 1);
1711         sta->hs20_session_info_url[len - 1] = '\0';
1712         wpa_printf(MSG_DEBUG, "HS 2.0: Session Information URL='%s' SWT=%u "
1713                    "(session_timeout=%d)",
1714                    sta->hs20_session_info_url, swt, session_timeout);
1715         if (session_timeout < 0) {
1716                 wpa_printf(MSG_DEBUG, "HS 2.0: No Session-Timeout set - ignore session info URL");
1717                 return;
1718         }
1719         if (swt == 255)
1720                 swt = 1; /* Use one minute as the AP selected value */
1721
1722         if ((unsigned int) session_timeout < swt * 60)
1723                 warning_time = 0;
1724         else
1725                 warning_time = session_timeout - swt * 60;
1726
1727         beacon_int = hapd->iconf->beacon_int;
1728         if (beacon_int < 1)
1729                 beacon_int = 100; /* best guess */
1730         sta->hs20_disassoc_timer = swt * 60 * 1000 / beacon_int * 125 / 128;
1731         if (sta->hs20_disassoc_timer > 65535)
1732                 sta->hs20_disassoc_timer = 65535;
1733
1734         ap_sta_session_warning_timeout(hapd, sta, warning_time);
1735 }
1736
1737
1738 static void ieee802_1x_hs20_t_c_filtering(struct hostapd_data *hapd,
1739                                           struct sta_info *sta, u8 *pos,
1740                                           size_t len)
1741 {
1742         if (len < 4)
1743                 return; /* Malformed information */
1744         wpa_printf(MSG_DEBUG,
1745                    "HS 2.0: Terms and Conditions filtering %02x %02x %02x %02x",
1746                    pos[0], pos[1], pos[2], pos[3]);
1747         hs20_t_c_filtering(hapd, sta, pos[0] & BIT(0));
1748 }
1749
1750
1751 static void ieee802_1x_hs20_t_c_url(struct hostapd_data *hapd,
1752                                     struct sta_info *sta, u8 *pos, size_t len)
1753 {
1754         os_free(sta->t_c_url);
1755         sta->t_c_url = os_malloc(len + 1);
1756         if (!sta->t_c_url)
1757                 return;
1758         os_memcpy(sta->t_c_url, pos, len);
1759         sta->t_c_url[len] = '\0';
1760         wpa_printf(MSG_DEBUG,
1761                    "HS 2.0: Terms and Conditions URL %s", sta->t_c_url);
1762 }
1763
1764 #endif /* CONFIG_HS20 */
1765
1766
1767 static void ieee802_1x_check_hs20(struct hostapd_data *hapd,
1768                                   struct sta_info *sta,
1769                                   struct radius_msg *msg,
1770                                   int session_timeout)
1771 {
1772 #ifdef CONFIG_HS20
1773         u8 *buf, *pos, *end, type, sublen;
1774         size_t len;
1775
1776         buf = NULL;
1777         sta->remediation = 0;
1778         sta->hs20_deauth_requested = 0;
1779
1780         for (;;) {
1781                 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_VENDOR_SPECIFIC,
1782                                             &buf, &len, buf) < 0)
1783                         break;
1784                 if (len < 6)
1785                         continue;
1786                 pos = buf;
1787                 end = buf + len;
1788                 if (WPA_GET_BE32(pos) != RADIUS_VENDOR_ID_WFA)
1789                         continue;
1790                 pos += 4;
1791
1792                 type = *pos++;
1793                 sublen = *pos++;
1794                 if (sublen < 2)
1795                         continue; /* invalid length */
1796                 sublen -= 2; /* skip header */
1797                 if (pos + sublen > end)
1798                         continue; /* invalid WFA VSA */
1799
1800                 switch (type) {
1801                 case RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION:
1802                         ieee802_1x_hs20_sub_rem(sta, pos, sublen);
1803                         break;
1804                 case RADIUS_VENDOR_ATTR_WFA_HS20_DEAUTH_REQ:
1805                         ieee802_1x_hs20_deauth_req(hapd, sta, pos, sublen);
1806                         break;
1807                 case RADIUS_VENDOR_ATTR_WFA_HS20_SESSION_INFO_URL:
1808                         ieee802_1x_hs20_session_info(hapd, sta, pos, sublen,
1809                                                      session_timeout);
1810                         break;
1811                 case RADIUS_VENDOR_ATTR_WFA_HS20_T_C_FILTERING:
1812                         ieee802_1x_hs20_t_c_filtering(hapd, sta, pos, sublen);
1813                         break;
1814                 case RADIUS_VENDOR_ATTR_WFA_HS20_T_C_URL:
1815                         ieee802_1x_hs20_t_c_url(hapd, sta, pos, sublen);
1816                         break;
1817                 }
1818         }
1819 #endif /* CONFIG_HS20 */
1820 }
1821
1822
1823 struct sta_id_search {
1824         u8 identifier;
1825         struct eapol_state_machine *sm;
1826 };
1827
1828
1829 static int ieee802_1x_select_radius_identifier(struct hostapd_data *hapd,
1830                                                struct sta_info *sta,
1831                                                void *ctx)
1832 {
1833         struct sta_id_search *id_search = ctx;
1834         struct eapol_state_machine *sm = sta->eapol_sm;
1835
1836         if (sm && sm->radius_identifier >= 0 &&
1837             sm->radius_identifier == id_search->identifier) {
1838                 id_search->sm = sm;
1839                 return 1;
1840         }
1841         return 0;
1842 }
1843
1844
1845 static struct eapol_state_machine *
1846 ieee802_1x_search_radius_identifier(struct hostapd_data *hapd, u8 identifier)
1847 {
1848         struct sta_id_search id_search;
1849         id_search.identifier = identifier;
1850         id_search.sm = NULL;
1851         ap_for_each_sta(hapd, ieee802_1x_select_radius_identifier, &id_search);
1852         return id_search.sm;
1853 }
1854
1855
1856 #ifndef CONFIG_NO_VLAN
1857 static int ieee802_1x_update_vlan(struct radius_msg *msg,
1858                                   struct hostapd_data *hapd,
1859                                   struct sta_info *sta)
1860 {
1861         struct vlan_description vlan_desc;
1862
1863         os_memset(&vlan_desc, 0, sizeof(vlan_desc));
1864         vlan_desc.notempty = !!radius_msg_get_vlanid(msg, &vlan_desc.untagged,
1865                                                      MAX_NUM_TAGGED_VLAN,
1866                                                      vlan_desc.tagged);
1867
1868         if (vlan_desc.notempty &&
1869             !hostapd_vlan_valid(hapd->conf->vlan, &vlan_desc)) {
1870                 sta->eapol_sm->authFail = TRUE;
1871                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
1872                                HOSTAPD_LEVEL_INFO,
1873                                "Invalid VLAN %d%s received from RADIUS server",
1874                                vlan_desc.untagged,
1875                                vlan_desc.tagged[0] ? "+" : "");
1876                 os_memset(&vlan_desc, 0, sizeof(vlan_desc));
1877                 ap_sta_set_vlan(hapd, sta, &vlan_desc);
1878                 return -1;
1879         }
1880
1881         if (hapd->conf->ssid.dynamic_vlan == DYNAMIC_VLAN_REQUIRED &&
1882             !vlan_desc.notempty) {
1883                 sta->eapol_sm->authFail = TRUE;
1884                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1885                                HOSTAPD_LEVEL_INFO,
1886                                "authentication server did not include required VLAN ID in Access-Accept");
1887                 return -1;
1888         }
1889
1890         return ap_sta_set_vlan(hapd, sta, &vlan_desc);
1891 }
1892 #endif /* CONFIG_NO_VLAN */
1893
1894
1895 /**
1896  * ieee802_1x_receive_auth - Process RADIUS frames from Authentication Server
1897  * @msg: RADIUS response message
1898  * @req: RADIUS request message
1899  * @shared_secret: RADIUS shared secret
1900  * @shared_secret_len: Length of shared_secret in octets
1901  * @data: Context data (struct hostapd_data *)
1902  * Returns: Processing status
1903  */
1904 static RadiusRxResult
1905 ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
1906                         const u8 *shared_secret, size_t shared_secret_len,
1907                         void *data)
1908 {
1909         struct hostapd_data *hapd = data;
1910         struct sta_info *sta;
1911         u32 session_timeout = 0, termination_action, acct_interim_interval;
1912         int session_timeout_set;
1913         u32 reason_code;
1914         struct eapol_state_machine *sm;
1915         int override_eapReq = 0;
1916         struct radius_hdr *hdr = radius_msg_get_hdr(msg);
1917
1918         sm = ieee802_1x_search_radius_identifier(hapd, hdr->identifier);
1919         if (sm == NULL) {
1920                 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Could not find matching "
1921                            "station for this RADIUS message");
1922                 return RADIUS_RX_UNKNOWN;
1923         }
1924         sta = sm->sta;
1925
1926         /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
1927          * present when packet contains an EAP-Message attribute */
1928         if (hdr->code == RADIUS_CODE_ACCESS_REJECT &&
1929             radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
1930                                 0) < 0 &&
1931             radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
1932                 wpa_printf(MSG_DEBUG, "Allowing RADIUS Access-Reject without "
1933                            "Message-Authenticator since it does not include "
1934                            "EAP-Message");
1935         } else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
1936                                      req, 1)) {
1937                 wpa_printf(MSG_INFO, "Incoming RADIUS packet did not have correct Message-Authenticator - dropped");
1938                 return RADIUS_RX_INVALID_AUTHENTICATOR;
1939         }
1940
1941         if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
1942             hdr->code != RADIUS_CODE_ACCESS_REJECT &&
1943             hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
1944                 wpa_printf(MSG_INFO, "Unknown RADIUS message code");
1945                 return RADIUS_RX_UNKNOWN;
1946         }
1947
1948         sm->radius_identifier = -1;
1949         wpa_printf(MSG_DEBUG, "RADIUS packet matching with station " MACSTR,
1950                    MAC2STR(sta->addr));
1951
1952         radius_msg_free(sm->last_recv_radius);
1953         sm->last_recv_radius = msg;
1954
1955         session_timeout_set =
1956                 !radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
1957                                            &session_timeout);
1958         if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_TERMINATION_ACTION,
1959                                       &termination_action))
1960                 termination_action = RADIUS_TERMINATION_ACTION_DEFAULT;
1961
1962         if (hapd->conf->acct_interim_interval == 0 &&
1963             hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
1964             radius_msg_get_attr_int32(msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
1965                                       &acct_interim_interval) == 0) {
1966                 if (acct_interim_interval < 60) {
1967                         hostapd_logger(hapd, sta->addr,
1968                                        HOSTAPD_MODULE_IEEE8021X,
1969                                        HOSTAPD_LEVEL_INFO,
1970                                        "ignored too small "
1971                                        "Acct-Interim-Interval %d",
1972                                        acct_interim_interval);
1973                 } else
1974                         sta->acct_interim_interval = acct_interim_interval;
1975         }
1976
1977
1978         switch (hdr->code) {
1979         case RADIUS_CODE_ACCESS_ACCEPT:
1980 #ifndef CONFIG_NO_VLAN
1981                 if (hapd->conf->ssid.dynamic_vlan != DYNAMIC_VLAN_DISABLED &&
1982                     ieee802_1x_update_vlan(msg, hapd, sta) < 0)
1983                         break;
1984
1985                 if (sta->vlan_id > 0) {
1986                         hostapd_logger(hapd, sta->addr,
1987                                        HOSTAPD_MODULE_RADIUS,
1988                                        HOSTAPD_LEVEL_INFO,
1989                                        "VLAN ID %d", sta->vlan_id);
1990                 }
1991
1992                 if ((sta->flags & WLAN_STA_ASSOC) &&
1993                     ap_sta_bind_vlan(hapd, sta) < 0)
1994                         break;
1995 #endif /* CONFIG_NO_VLAN */
1996
1997                 sta->session_timeout_set = !!session_timeout_set;
1998                 os_get_reltime(&sta->session_timeout);
1999                 sta->session_timeout.sec += session_timeout;
2000
2001                 /* RFC 3580, Ch. 3.17 */
2002                 if (session_timeout_set && termination_action ==
2003                     RADIUS_TERMINATION_ACTION_RADIUS_REQUEST)
2004                         sm->reAuthPeriod = session_timeout;
2005                 else if (session_timeout_set)
2006                         ap_sta_session_timeout(hapd, sta, session_timeout);
2007                 else
2008                         ap_sta_no_session_timeout(hapd, sta);
2009
2010                 sm->eap_if->aaaSuccess = TRUE;
2011                 override_eapReq = 1;
2012                 ieee802_1x_get_keys(hapd, sta, msg, req, shared_secret,
2013                                     shared_secret_len);
2014                 ieee802_1x_store_radius_class(hapd, sta, msg);
2015                 ieee802_1x_update_sta_identity(hapd, sta, msg);
2016                 ieee802_1x_update_sta_cui(hapd, sta, msg);
2017                 ieee802_1x_check_hs20(hapd, sta, msg,
2018                                       session_timeout_set ?
2019                                       (int) session_timeout : -1);
2020                 break;
2021         case RADIUS_CODE_ACCESS_REJECT:
2022                 sm->eap_if->aaaFail = TRUE;
2023                 override_eapReq = 1;
2024                 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_WLAN_REASON_CODE,
2025                                               &reason_code) == 0) {
2026                         wpa_printf(MSG_DEBUG,
2027                                    "RADIUS server indicated WLAN-Reason-Code %u in Access-Reject for "
2028                                    MACSTR, reason_code, MAC2STR(sta->addr));
2029                         sta->disconnect_reason_code = reason_code;
2030                 }
2031                 break;
2032         case RADIUS_CODE_ACCESS_CHALLENGE:
2033                 sm->eap_if->aaaEapReq = TRUE;
2034                 if (session_timeout_set) {
2035                         /* RFC 2869, Ch. 2.3.2; RFC 3580, Ch. 3.17 */
2036                         sm->eap_if->aaaMethodTimeout = session_timeout;
2037                         hostapd_logger(hapd, sm->addr,
2038                                        HOSTAPD_MODULE_IEEE8021X,
2039                                        HOSTAPD_LEVEL_DEBUG,
2040                                        "using EAP timeout of %d seconds (from "
2041                                        "RADIUS)",
2042                                        sm->eap_if->aaaMethodTimeout);
2043                 } else {
2044                         /*
2045                          * Use dynamic retransmission behavior per EAP
2046                          * specification.
2047                          */
2048                         sm->eap_if->aaaMethodTimeout = 0;
2049                 }
2050                 break;
2051         }
2052
2053         ieee802_1x_decapsulate_radius(hapd, sta);
2054         if (override_eapReq)
2055                 sm->eap_if->aaaEapReq = FALSE;
2056
2057 #ifdef CONFIG_FILS
2058 #ifdef NEED_AP_MLME
2059         if (sta->flags & WLAN_STA_PENDING_FILS_ERP) {
2060                 /* TODO: Add a PMKSA entry on success? */
2061                 ieee802_11_finish_fils_auth(
2062                         hapd, sta, hdr->code == RADIUS_CODE_ACCESS_ACCEPT,
2063                         sm->eap_if->aaaEapReqData,
2064                         sm->eap_if->aaaEapKeyData,
2065                         sm->eap_if->aaaEapKeyDataLen);
2066         }
2067 #endif /* NEED_AP_MLME */
2068 #endif /* CONFIG_FILS */
2069
2070         eapol_auth_step(sm);
2071
2072         return RADIUS_RX_QUEUED;
2073 }
2074 #endif /* CONFIG_NO_RADIUS */
2075
2076
2077 void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta)
2078 {
2079         struct eapol_state_machine *sm = sta->eapol_sm;
2080         if (sm == NULL)
2081                 return;
2082
2083         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
2084                        HOSTAPD_LEVEL_DEBUG, "aborting authentication");
2085
2086 #ifndef CONFIG_NO_RADIUS
2087         radius_msg_free(sm->last_recv_radius);
2088         sm->last_recv_radius = NULL;
2089 #endif /* CONFIG_NO_RADIUS */
2090
2091         if (sm->eap_if->eapTimeout) {
2092                 /*
2093                  * Disconnect the STA since it did not reply to the last EAP
2094                  * request and we cannot continue EAP processing (EAP-Failure
2095                  * could only be sent if the EAP peer actually replied).
2096                  */
2097                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "EAP Timeout, STA " MACSTR,
2098                         MAC2STR(sta->addr));
2099
2100                 sm->eap_if->portEnabled = FALSE;
2101                 ap_sta_disconnect(hapd, sta, sta->addr,
2102                                   WLAN_REASON_PREV_AUTH_NOT_VALID);
2103         }
2104 }
2105
2106
2107 static int ieee802_1x_rekey_broadcast(struct hostapd_data *hapd)
2108 {
2109         struct eapol_authenticator *eapol = hapd->eapol_auth;
2110
2111         if (hapd->conf->default_wep_key_len < 1)
2112                 return 0;
2113
2114         os_free(eapol->default_wep_key);
2115         eapol->default_wep_key = os_malloc(hapd->conf->default_wep_key_len);
2116         if (eapol->default_wep_key == NULL ||
2117             random_get_bytes(eapol->default_wep_key,
2118                              hapd->conf->default_wep_key_len)) {
2119                 wpa_printf(MSG_INFO, "Could not generate random WEP key");
2120                 os_free(eapol->default_wep_key);
2121                 eapol->default_wep_key = NULL;
2122                 return -1;
2123         }
2124
2125         wpa_hexdump_key(MSG_DEBUG, "IEEE 802.1X: New default WEP key",
2126                         eapol->default_wep_key,
2127                         hapd->conf->default_wep_key_len);
2128
2129         return 0;
2130 }
2131
2132
2133 static int ieee802_1x_sta_key_available(struct hostapd_data *hapd,
2134                                         struct sta_info *sta, void *ctx)
2135 {
2136         if (sta->eapol_sm) {
2137                 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
2138                 eapol_auth_step(sta->eapol_sm);
2139         }
2140         return 0;
2141 }
2142
2143
2144 static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx)
2145 {
2146         struct hostapd_data *hapd = eloop_ctx;
2147         struct eapol_authenticator *eapol = hapd->eapol_auth;
2148
2149         if (eapol->default_wep_key_idx >= 3)
2150                 eapol->default_wep_key_idx =
2151                         hapd->conf->individual_wep_key_len > 0 ? 1 : 0;
2152         else
2153                 eapol->default_wep_key_idx++;
2154
2155         wpa_printf(MSG_DEBUG, "IEEE 802.1X: New default WEP key index %d",
2156                    eapol->default_wep_key_idx);
2157
2158         if (ieee802_1x_rekey_broadcast(hapd)) {
2159                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
2160                                HOSTAPD_LEVEL_WARNING, "failed to generate a "
2161                                "new broadcast key");
2162                 os_free(eapol->default_wep_key);
2163                 eapol->default_wep_key = NULL;
2164                 return;
2165         }
2166
2167         /* TODO: Could setup key for RX here, but change default TX keyid only
2168          * after new broadcast key has been sent to all stations. */
2169         if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
2170                                 broadcast_ether_addr,
2171                                 eapol->default_wep_key_idx, 1, NULL, 0,
2172                                 eapol->default_wep_key,
2173                                 hapd->conf->default_wep_key_len)) {
2174                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
2175                                HOSTAPD_LEVEL_WARNING, "failed to configure a "
2176                                "new broadcast key");
2177                 os_free(eapol->default_wep_key);
2178                 eapol->default_wep_key = NULL;
2179                 return;
2180         }
2181
2182         ap_for_each_sta(hapd, ieee802_1x_sta_key_available, NULL);
2183
2184         if (hapd->conf->wep_rekeying_period > 0) {
2185                 eloop_register_timeout(hapd->conf->wep_rekeying_period, 0,
2186                                        ieee802_1x_rekey, hapd, NULL);
2187         }
2188 }
2189
2190
2191 static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type,
2192                                   const u8 *data, size_t datalen)
2193 {
2194 #ifdef CONFIG_WPS
2195         struct sta_info *sta = sta_ctx;
2196
2197         if ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) ==
2198             WLAN_STA_MAYBE_WPS) {
2199                 const u8 *identity;
2200                 size_t identity_len;
2201                 struct eapol_state_machine *sm = sta->eapol_sm;
2202
2203                 identity = eap_get_identity(sm->eap, &identity_len);
2204                 if (identity &&
2205                     ((identity_len == WSC_ID_ENROLLEE_LEN &&
2206                       os_memcmp(identity, WSC_ID_ENROLLEE,
2207                                 WSC_ID_ENROLLEE_LEN) == 0) ||
2208                      (identity_len == WSC_ID_REGISTRAR_LEN &&
2209                       os_memcmp(identity, WSC_ID_REGISTRAR,
2210                                 WSC_ID_REGISTRAR_LEN) == 0))) {
2211                         wpa_printf(MSG_DEBUG, "WPS: WLAN_STA_MAYBE_WPS -> "
2212                                    "WLAN_STA_WPS");
2213                         sta->flags |= WLAN_STA_WPS;
2214                 }
2215         }
2216 #endif /* CONFIG_WPS */
2217
2218         ieee802_1x_send(ctx, sta_ctx, type, data, datalen);
2219 }
2220
2221
2222 static void ieee802_1x_aaa_send(void *ctx, void *sta_ctx,
2223                                 const u8 *data, size_t datalen)
2224 {
2225 #ifndef CONFIG_NO_RADIUS
2226         struct hostapd_data *hapd = ctx;
2227         struct sta_info *sta = sta_ctx;
2228
2229         ieee802_1x_encapsulate_radius(hapd, sta, data, datalen);
2230 #endif /* CONFIG_NO_RADIUS */
2231 }
2232
2233
2234 static void _ieee802_1x_finished(void *ctx, void *sta_ctx, int success,
2235                                  int preauth, int remediation)
2236 {
2237         struct hostapd_data *hapd = ctx;
2238         struct sta_info *sta = sta_ctx;
2239         if (preauth)
2240                 rsn_preauth_finished(hapd, sta, success);
2241         else
2242                 ieee802_1x_finished(hapd, sta, success, remediation);
2243 }
2244
2245
2246 static int ieee802_1x_get_eap_user(void *ctx, const u8 *identity,
2247                                    size_t identity_len, int phase2,
2248                                    struct eap_user *user)
2249 {
2250         struct hostapd_data *hapd = ctx;
2251         const struct hostapd_eap_user *eap_user;
2252         int i;
2253         int rv = -1;
2254
2255         eap_user = hostapd_get_eap_user(hapd, identity, identity_len, phase2);
2256         if (eap_user == NULL)
2257                 goto out;
2258
2259         os_memset(user, 0, sizeof(*user));
2260         user->phase2 = phase2;
2261         for (i = 0; i < EAP_MAX_METHODS; i++) {
2262                 user->methods[i].vendor = eap_user->methods[i].vendor;
2263                 user->methods[i].method = eap_user->methods[i].method;
2264         }
2265
2266         if (eap_user->password) {
2267                 user->password = os_memdup(eap_user->password,
2268                                            eap_user->password_len);
2269                 if (user->password == NULL)
2270                         goto out;
2271                 user->password_len = eap_user->password_len;
2272                 user->password_hash = eap_user->password_hash;
2273                 if (eap_user->salt && eap_user->salt_len) {
2274                         user->salt = os_memdup(eap_user->salt,
2275                                                eap_user->salt_len);
2276                         if (!user->salt)
2277                                 goto out;
2278                         user->salt_len = eap_user->salt_len;
2279                 }
2280         }
2281         user->force_version = eap_user->force_version;
2282         user->macacl = eap_user->macacl;
2283         user->ttls_auth = eap_user->ttls_auth;
2284         user->remediation = eap_user->remediation;
2285         rv = 0;
2286
2287 out:
2288         if (rv)
2289                 wpa_printf(MSG_DEBUG, "%s: Failed to find user", __func__);
2290
2291         return rv;
2292 }
2293
2294
2295 static int ieee802_1x_sta_entry_alive(void *ctx, const u8 *addr)
2296 {
2297         struct hostapd_data *hapd = ctx;
2298         struct sta_info *sta;
2299         sta = ap_get_sta(hapd, addr);
2300         if (sta == NULL || sta->eapol_sm == NULL)
2301                 return 0;
2302         return 1;
2303 }
2304
2305
2306 static void ieee802_1x_logger(void *ctx, const u8 *addr,
2307                               eapol_logger_level level, const char *txt)
2308 {
2309 #ifndef CONFIG_NO_HOSTAPD_LOGGER
2310         struct hostapd_data *hapd = ctx;
2311         int hlevel;
2312
2313         switch (level) {
2314         case EAPOL_LOGGER_WARNING:
2315                 hlevel = HOSTAPD_LEVEL_WARNING;
2316                 break;
2317         case EAPOL_LOGGER_INFO:
2318                 hlevel = HOSTAPD_LEVEL_INFO;
2319                 break;
2320         case EAPOL_LOGGER_DEBUG:
2321         default:
2322                 hlevel = HOSTAPD_LEVEL_DEBUG;
2323                 break;
2324         }
2325
2326         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE8021X, hlevel, "%s",
2327                        txt);
2328 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
2329 }
2330
2331
2332 static void ieee802_1x_set_port_authorized(void *ctx, void *sta_ctx,
2333                                            int authorized)
2334 {
2335         struct hostapd_data *hapd = ctx;
2336         struct sta_info *sta = sta_ctx;
2337         ieee802_1x_set_sta_authorized(hapd, sta, authorized);
2338 }
2339
2340
2341 static void _ieee802_1x_abort_auth(void *ctx, void *sta_ctx)
2342 {
2343         struct hostapd_data *hapd = ctx;
2344         struct sta_info *sta = sta_ctx;
2345         ieee802_1x_abort_auth(hapd, sta);
2346 }
2347
2348
2349 static void _ieee802_1x_tx_key(void *ctx, void *sta_ctx)
2350 {
2351 #ifndef CONFIG_FIPS
2352 #ifndef CONFIG_NO_RC4
2353         struct hostapd_data *hapd = ctx;
2354         struct sta_info *sta = sta_ctx;
2355         ieee802_1x_tx_key(hapd, sta);
2356 #endif /* CONFIG_NO_RC4 */
2357 #endif /* CONFIG_FIPS */
2358 }
2359
2360
2361 static void ieee802_1x_eapol_event(void *ctx, void *sta_ctx,
2362                                    enum eapol_event type)
2363 {
2364         /* struct hostapd_data *hapd = ctx; */
2365         struct sta_info *sta = sta_ctx;
2366         switch (type) {
2367         case EAPOL_AUTH_SM_CHANGE:
2368                 wpa_auth_sm_notify(sta->wpa_sm);
2369                 break;
2370         case EAPOL_AUTH_REAUTHENTICATE:
2371                 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
2372                 break;
2373         }
2374 }
2375
2376
2377 #ifdef CONFIG_ERP
2378
2379 static struct eap_server_erp_key *
2380 ieee802_1x_erp_get_key(void *ctx, const char *keyname)
2381 {
2382         struct hostapd_data *hapd = ctx;
2383         struct eap_server_erp_key *erp;
2384
2385         dl_list_for_each(erp, &hapd->erp_keys, struct eap_server_erp_key,
2386                          list) {
2387                 if (os_strcmp(erp->keyname_nai, keyname) == 0)
2388                         return erp;
2389         }
2390
2391         return NULL;
2392 }
2393
2394
2395 static int ieee802_1x_erp_add_key(void *ctx, struct eap_server_erp_key *erp)
2396 {
2397         struct hostapd_data *hapd = ctx;
2398
2399         dl_list_add(&hapd->erp_keys, &erp->list);
2400         return 0;
2401 }
2402
2403 #endif /* CONFIG_ERP */
2404
2405
2406 int ieee802_1x_init(struct hostapd_data *hapd)
2407 {
2408         int i;
2409         struct eapol_auth_config conf;
2410         struct eapol_auth_cb cb;
2411
2412         dl_list_init(&hapd->erp_keys);
2413
2414         os_memset(&conf, 0, sizeof(conf));
2415         conf.ctx = hapd;
2416         conf.eap_reauth_period = hapd->conf->eap_reauth_period;
2417         conf.wpa = hapd->conf->wpa;
2418         conf.individual_wep_key_len = hapd->conf->individual_wep_key_len;
2419         conf.eap_server = hapd->conf->eap_server;
2420         conf.ssl_ctx = hapd->ssl_ctx;
2421         conf.msg_ctx = hapd->msg_ctx;
2422         conf.eap_sim_db_priv = hapd->eap_sim_db_priv;
2423         conf.eap_req_id_text = hapd->conf->eap_req_id_text;
2424         conf.eap_req_id_text_len = hapd->conf->eap_req_id_text_len;
2425         conf.erp_send_reauth_start = hapd->conf->erp_send_reauth_start;
2426         conf.erp_domain = hapd->conf->erp_domain;
2427         conf.erp = hapd->conf->eap_server_erp;
2428         conf.tls_session_lifetime = hapd->conf->tls_session_lifetime;
2429         conf.tls_flags = hapd->conf->tls_flags;
2430         conf.pac_opaque_encr_key = hapd->conf->pac_opaque_encr_key;
2431         conf.eap_fast_a_id = hapd->conf->eap_fast_a_id;
2432         conf.eap_fast_a_id_len = hapd->conf->eap_fast_a_id_len;
2433         conf.eap_fast_a_id_info = hapd->conf->eap_fast_a_id_info;
2434         conf.eap_fast_prov = hapd->conf->eap_fast_prov;
2435         conf.pac_key_lifetime = hapd->conf->pac_key_lifetime;
2436         conf.pac_key_refresh_time = hapd->conf->pac_key_refresh_time;
2437         conf.eap_teap_auth = hapd->conf->eap_teap_auth;
2438         conf.eap_teap_pac_no_inner = hapd->conf->eap_teap_pac_no_inner;
2439         conf.eap_sim_aka_result_ind = hapd->conf->eap_sim_aka_result_ind;
2440         conf.eap_sim_id = hapd->conf->eap_sim_id;
2441         conf.tnc = hapd->conf->tnc;
2442         conf.wps = hapd->wps;
2443         conf.fragment_size = hapd->conf->fragment_size;
2444         conf.pwd_group = hapd->conf->pwd_group;
2445         conf.pbc_in_m1 = hapd->conf->pbc_in_m1;
2446         if (hapd->conf->server_id) {
2447                 conf.server_id = (const u8 *) hapd->conf->server_id;
2448                 conf.server_id_len = os_strlen(hapd->conf->server_id);
2449         } else {
2450                 conf.server_id = (const u8 *) "hostapd";
2451                 conf.server_id_len = 7;
2452         }
2453
2454         os_memset(&cb, 0, sizeof(cb));
2455         cb.eapol_send = ieee802_1x_eapol_send;
2456         cb.aaa_send = ieee802_1x_aaa_send;
2457         cb.finished = _ieee802_1x_finished;
2458         cb.get_eap_user = ieee802_1x_get_eap_user;
2459         cb.sta_entry_alive = ieee802_1x_sta_entry_alive;
2460         cb.logger = ieee802_1x_logger;
2461         cb.set_port_authorized = ieee802_1x_set_port_authorized;
2462         cb.abort_auth = _ieee802_1x_abort_auth;
2463         cb.tx_key = _ieee802_1x_tx_key;
2464         cb.eapol_event = ieee802_1x_eapol_event;
2465 #ifdef CONFIG_ERP
2466         cb.erp_get_key = ieee802_1x_erp_get_key;
2467         cb.erp_add_key = ieee802_1x_erp_add_key;
2468 #endif /* CONFIG_ERP */
2469
2470         hapd->eapol_auth = eapol_auth_init(&conf, &cb);
2471         if (hapd->eapol_auth == NULL)
2472                 return -1;
2473
2474         if ((hapd->conf->ieee802_1x || hapd->conf->wpa) &&
2475             hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1))
2476                 return -1;
2477
2478 #ifndef CONFIG_NO_RADIUS
2479         if (radius_client_register(hapd->radius, RADIUS_AUTH,
2480                                    ieee802_1x_receive_auth, hapd))
2481                 return -1;
2482 #endif /* CONFIG_NO_RADIUS */
2483
2484         if (hapd->conf->default_wep_key_len) {
2485                 for (i = 0; i < 4; i++)
2486                         hostapd_drv_set_key(hapd->conf->iface, hapd,
2487                                             WPA_ALG_NONE, NULL, i, 0, NULL, 0,
2488                                             NULL, 0);
2489
2490                 ieee802_1x_rekey(hapd, NULL);
2491
2492                 if (hapd->eapol_auth->default_wep_key == NULL)
2493                         return -1;
2494         }
2495
2496         return 0;
2497 }
2498
2499
2500 void ieee802_1x_erp_flush(struct hostapd_data *hapd)
2501 {
2502         struct eap_server_erp_key *erp;
2503
2504         while ((erp = dl_list_first(&hapd->erp_keys, struct eap_server_erp_key,
2505                                     list)) != NULL) {
2506                 dl_list_del(&erp->list);
2507                 bin_clear_free(erp, sizeof(*erp));
2508         }
2509 }
2510
2511
2512 void ieee802_1x_deinit(struct hostapd_data *hapd)
2513 {
2514         eloop_cancel_timeout(ieee802_1x_rekey, hapd, NULL);
2515
2516         if (hapd->driver && hapd->drv_priv &&
2517             (hapd->conf->ieee802_1x || hapd->conf->wpa))
2518                 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
2519
2520         eapol_auth_deinit(hapd->eapol_auth);
2521         hapd->eapol_auth = NULL;
2522
2523         ieee802_1x_erp_flush(hapd);
2524 }
2525
2526
2527 int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
2528                          const u8 *buf, size_t len, int ack)
2529 {
2530         struct ieee80211_hdr *hdr;
2531         u8 *pos;
2532         const unsigned char rfc1042_hdr[ETH_ALEN] =
2533                 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
2534
2535         if (sta == NULL)
2536                 return -1;
2537         if (len < sizeof(*hdr) + sizeof(rfc1042_hdr) + 2)
2538                 return 0;
2539
2540         hdr = (struct ieee80211_hdr *) buf;
2541         pos = (u8 *) (hdr + 1);
2542         if (os_memcmp(pos, rfc1042_hdr, sizeof(rfc1042_hdr)) != 0)
2543                 return 0;
2544         pos += sizeof(rfc1042_hdr);
2545         if (WPA_GET_BE16(pos) != ETH_P_PAE)
2546                 return 0;
2547         pos += 2;
2548
2549         return ieee802_1x_eapol_tx_status(hapd, sta, pos, buf + len - pos,
2550                                           ack);
2551 }
2552
2553
2554 int ieee802_1x_eapol_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
2555                                const u8 *buf, int len, int ack)
2556 {
2557         const struct ieee802_1x_hdr *xhdr =
2558                 (const struct ieee802_1x_hdr *) buf;
2559         const u8 *pos = buf + sizeof(*xhdr);
2560         struct ieee802_1x_eapol_key *key;
2561
2562         if (len < (int) sizeof(*xhdr))
2563                 return 0;
2564         wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR " TX status - version=%d "
2565                    "type=%d length=%d - ack=%d",
2566                    MAC2STR(sta->addr), xhdr->version, xhdr->type,
2567                    be_to_host16(xhdr->length), ack);
2568
2569 #ifdef CONFIG_WPS
2570         if (xhdr->type == IEEE802_1X_TYPE_EAP_PACKET && ack &&
2571             (sta->flags & WLAN_STA_WPS) &&
2572             ap_sta_pending_delayed_1x_auth_fail_disconnect(hapd, sta)) {
2573                 wpa_printf(MSG_DEBUG,
2574                            "WPS: Indicate EAP completion on ACK for EAP-Failure");
2575                 hostapd_wps_eap_completed(hapd);
2576         }
2577 #endif /* CONFIG_WPS */
2578
2579         if (xhdr->type != IEEE802_1X_TYPE_EAPOL_KEY)
2580                 return 0;
2581
2582         if (pos + sizeof(struct wpa_eapol_key) <= buf + len) {
2583                 const struct wpa_eapol_key *wpa;
2584                 wpa = (const struct wpa_eapol_key *) pos;
2585                 if (wpa->type == EAPOL_KEY_TYPE_RSN ||
2586                     wpa->type == EAPOL_KEY_TYPE_WPA)
2587                         wpa_auth_eapol_key_tx_status(hapd->wpa_auth,
2588                                                      sta->wpa_sm, ack);
2589         }
2590
2591         /* EAPOL EAP-Packet packets are eventually re-sent by either Supplicant
2592          * or Authenticator state machines, but EAPOL-Key packets are not
2593          * retransmitted in case of failure. Try to re-send failed EAPOL-Key
2594          * packets couple of times because otherwise STA keys become
2595          * unsynchronized with AP. */
2596         if (!ack && pos + sizeof(*key) <= buf + len) {
2597                 key = (struct ieee802_1x_eapol_key *) pos;
2598                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
2599                                HOSTAPD_LEVEL_DEBUG, "did not Ack EAPOL-Key "
2600                                "frame (%scast index=%d)",
2601                                key->key_index & BIT(7) ? "uni" : "broad",
2602                                key->key_index & ~BIT(7));
2603                 /* TODO: re-send EAPOL-Key couple of times (with short delay
2604                  * between them?). If all attempt fail, report error and
2605                  * deauthenticate STA so that it will get new keys when
2606                  * authenticating again (e.g., after returning in range).
2607                  * Separate limit/transmit state needed both for unicast and
2608                  * broadcast keys(?) */
2609         }
2610         /* TODO: could move unicast key configuration from ieee802_1x_tx_key()
2611          * to here and change the key only if the EAPOL-Key packet was Acked.
2612          */
2613
2614         return 1;
2615 }
2616
2617
2618 u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len)
2619 {
2620         if (sm == NULL || sm->identity == NULL)
2621                 return NULL;
2622
2623         *len = sm->identity_len;
2624         return sm->identity;
2625 }
2626
2627
2628 u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len,
2629                                  int idx)
2630 {
2631         if (sm == NULL || sm->radius_class.attr == NULL ||
2632             idx >= (int) sm->radius_class.count)
2633                 return NULL;
2634
2635         *len = sm->radius_class.attr[idx].len;
2636         return sm->radius_class.attr[idx].data;
2637 }
2638
2639
2640 struct wpabuf * ieee802_1x_get_radius_cui(struct eapol_state_machine *sm)
2641 {
2642         if (sm == NULL)
2643                 return NULL;
2644         return sm->radius_cui;
2645 }
2646
2647
2648 const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len)
2649 {
2650         *len = 0;
2651         if (sm == NULL)
2652                 return NULL;
2653
2654         *len = sm->eap_if->eapKeyDataLen;
2655         return sm->eap_if->eapKeyData;
2656 }
2657
2658
2659 #ifdef CONFIG_MACSEC
2660 const u8 * ieee802_1x_get_session_id(struct eapol_state_machine *sm,
2661                                      size_t *len)
2662 {
2663         *len = 0;
2664         if (!sm || !sm->eap_if)
2665                 return NULL;
2666
2667         *len = sm->eap_if->eapSessionIdLen;
2668         return sm->eap_if->eapSessionId;
2669 }
2670 #endif /* CONFIG_MACSEC */
2671
2672
2673 void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm,
2674                                     int enabled)
2675 {
2676         if (sm == NULL)
2677                 return;
2678         sm->eap_if->portEnabled = enabled ? TRUE : FALSE;
2679         eapol_auth_step(sm);
2680 }
2681
2682
2683 void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm,
2684                                   int valid)
2685 {
2686         if (sm == NULL)
2687                 return;
2688         sm->portValid = valid ? TRUE : FALSE;
2689         eapol_auth_step(sm);
2690 }
2691
2692
2693 void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, int pre_auth)
2694 {
2695         if (sm == NULL)
2696                 return;
2697         if (pre_auth)
2698                 sm->flags |= EAPOL_SM_PREAUTH;
2699         else
2700                 sm->flags &= ~EAPOL_SM_PREAUTH;
2701 }
2702
2703
2704 static const char * bool_txt(Boolean val)
2705 {
2706         return val ? "TRUE" : "FALSE";
2707 }
2708
2709
2710 int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
2711 {
2712         /* TODO */
2713         return 0;
2714 }
2715
2716
2717 int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
2718                            char *buf, size_t buflen)
2719 {
2720         int len = 0, ret;
2721         struct eapol_state_machine *sm = sta->eapol_sm;
2722         struct os_reltime diff;
2723         const char *name1;
2724         const char *name2;
2725         char *identity_buf = NULL;
2726
2727         if (sm == NULL)
2728                 return 0;
2729
2730         ret = os_snprintf(buf + len, buflen - len,
2731                           "dot1xPaePortNumber=%d\n"
2732                           "dot1xPaePortProtocolVersion=%d\n"
2733                           "dot1xPaePortCapabilities=1\n"
2734                           "dot1xPaePortInitialize=%d\n"
2735                           "dot1xPaePortReauthenticate=FALSE\n",
2736                           sta->aid,
2737                           EAPOL_VERSION,
2738                           sm->initialize);
2739         if (os_snprintf_error(buflen - len, ret))
2740                 return len;
2741         len += ret;
2742
2743         /* dot1xAuthConfigTable */
2744         ret = os_snprintf(buf + len, buflen - len,
2745                           "dot1xAuthPaeState=%d\n"
2746                           "dot1xAuthBackendAuthState=%d\n"
2747                           "dot1xAuthAdminControlledDirections=%d\n"
2748                           "dot1xAuthOperControlledDirections=%d\n"
2749                           "dot1xAuthAuthControlledPortStatus=%d\n"
2750                           "dot1xAuthAuthControlledPortControl=%d\n"
2751                           "dot1xAuthQuietPeriod=%u\n"
2752                           "dot1xAuthServerTimeout=%u\n"
2753                           "dot1xAuthReAuthPeriod=%u\n"
2754                           "dot1xAuthReAuthEnabled=%s\n"
2755                           "dot1xAuthKeyTxEnabled=%s\n",
2756                           sm->auth_pae_state + 1,
2757                           sm->be_auth_state + 1,
2758                           sm->adminControlledDirections,
2759                           sm->operControlledDirections,
2760                           sm->authPortStatus,
2761                           sm->portControl,
2762                           sm->quietPeriod,
2763                           sm->serverTimeout,
2764                           sm->reAuthPeriod,
2765                           bool_txt(sm->reAuthEnabled),
2766                           bool_txt(sm->keyTxEnabled));
2767         if (os_snprintf_error(buflen - len, ret))
2768                 return len;
2769         len += ret;
2770
2771         /* dot1xAuthStatsTable */
2772         ret = os_snprintf(buf + len, buflen - len,
2773                           "dot1xAuthEapolFramesRx=%u\n"
2774                           "dot1xAuthEapolFramesTx=%u\n"
2775                           "dot1xAuthEapolStartFramesRx=%u\n"
2776                           "dot1xAuthEapolLogoffFramesRx=%u\n"
2777                           "dot1xAuthEapolRespIdFramesRx=%u\n"
2778                           "dot1xAuthEapolRespFramesRx=%u\n"
2779                           "dot1xAuthEapolReqIdFramesTx=%u\n"
2780                           "dot1xAuthEapolReqFramesTx=%u\n"
2781                           "dot1xAuthInvalidEapolFramesRx=%u\n"
2782                           "dot1xAuthEapLengthErrorFramesRx=%u\n"
2783                           "dot1xAuthLastEapolFrameVersion=%u\n"
2784                           "dot1xAuthLastEapolFrameSource=" MACSTR "\n",
2785                           sm->dot1xAuthEapolFramesRx,
2786                           sm->dot1xAuthEapolFramesTx,
2787                           sm->dot1xAuthEapolStartFramesRx,
2788                           sm->dot1xAuthEapolLogoffFramesRx,
2789                           sm->dot1xAuthEapolRespIdFramesRx,
2790                           sm->dot1xAuthEapolRespFramesRx,
2791                           sm->dot1xAuthEapolReqIdFramesTx,
2792                           sm->dot1xAuthEapolReqFramesTx,
2793                           sm->dot1xAuthInvalidEapolFramesRx,
2794                           sm->dot1xAuthEapLengthErrorFramesRx,
2795                           sm->dot1xAuthLastEapolFrameVersion,
2796                           MAC2STR(sm->addr));
2797         if (os_snprintf_error(buflen - len, ret))
2798                 return len;
2799         len += ret;
2800
2801         /* dot1xAuthDiagTable */
2802         ret = os_snprintf(buf + len, buflen - len,
2803                           "dot1xAuthEntersConnecting=%u\n"
2804                           "dot1xAuthEapLogoffsWhileConnecting=%u\n"
2805                           "dot1xAuthEntersAuthenticating=%u\n"
2806                           "dot1xAuthAuthSuccessesWhileAuthenticating=%u\n"
2807                           "dot1xAuthAuthTimeoutsWhileAuthenticating=%u\n"
2808                           "dot1xAuthAuthFailWhileAuthenticating=%u\n"
2809                           "dot1xAuthAuthEapStartsWhileAuthenticating=%u\n"
2810                           "dot1xAuthAuthEapLogoffWhileAuthenticating=%u\n"
2811                           "dot1xAuthAuthReauthsWhileAuthenticated=%u\n"
2812                           "dot1xAuthAuthEapStartsWhileAuthenticated=%u\n"
2813                           "dot1xAuthAuthEapLogoffWhileAuthenticated=%u\n"
2814                           "dot1xAuthBackendResponses=%u\n"
2815                           "dot1xAuthBackendAccessChallenges=%u\n"
2816                           "dot1xAuthBackendOtherRequestsToSupplicant=%u\n"
2817                           "dot1xAuthBackendAuthSuccesses=%u\n"
2818                           "dot1xAuthBackendAuthFails=%u\n",
2819                           sm->authEntersConnecting,
2820                           sm->authEapLogoffsWhileConnecting,
2821                           sm->authEntersAuthenticating,
2822                           sm->authAuthSuccessesWhileAuthenticating,
2823                           sm->authAuthTimeoutsWhileAuthenticating,
2824                           sm->authAuthFailWhileAuthenticating,
2825                           sm->authAuthEapStartsWhileAuthenticating,
2826                           sm->authAuthEapLogoffWhileAuthenticating,
2827                           sm->authAuthReauthsWhileAuthenticated,
2828                           sm->authAuthEapStartsWhileAuthenticated,
2829                           sm->authAuthEapLogoffWhileAuthenticated,
2830                           sm->backendResponses,
2831                           sm->backendAccessChallenges,
2832                           sm->backendOtherRequestsToSupplicant,
2833                           sm->backendAuthSuccesses,
2834                           sm->backendAuthFails);
2835         if (os_snprintf_error(buflen - len, ret))
2836                 return len;
2837         len += ret;
2838
2839         /* dot1xAuthSessionStatsTable */
2840         os_reltime_age(&sta->acct_session_start, &diff);
2841         if (sm->eap && !sm->identity) {
2842                 const u8 *id;
2843                 size_t id_len;
2844
2845                 id = eap_get_identity(sm->eap, &id_len);
2846                 if (id)
2847                         identity_buf = dup_binstr(id, id_len);
2848         }
2849         ret = os_snprintf(buf + len, buflen - len,
2850                           /* TODO: dot1xAuthSessionOctetsRx */
2851                           /* TODO: dot1xAuthSessionOctetsTx */
2852                           /* TODO: dot1xAuthSessionFramesRx */
2853                           /* TODO: dot1xAuthSessionFramesTx */
2854                           "dot1xAuthSessionId=%016llX\n"
2855                           "dot1xAuthSessionAuthenticMethod=%d\n"
2856                           "dot1xAuthSessionTime=%u\n"
2857                           "dot1xAuthSessionTerminateCause=999\n"
2858                           "dot1xAuthSessionUserName=%s\n",
2859                           (unsigned long long) sta->acct_session_id,
2860                           (wpa_key_mgmt_wpa_ieee8021x(
2861                                    wpa_auth_sta_key_mgmt(sta->wpa_sm))) ?
2862                           1 : 2,
2863                           (unsigned int) diff.sec,
2864                           sm->identity ? (char *) sm->identity :
2865                                          (identity_buf ? identity_buf : "N/A"));
2866         os_free(identity_buf);
2867         if (os_snprintf_error(buflen - len, ret))
2868                 return len;
2869         len += ret;
2870
2871         if (sm->acct_multi_session_id) {
2872                 ret = os_snprintf(buf + len, buflen - len,
2873                                   "authMultiSessionId=%016llX\n",
2874                                   (unsigned long long)
2875                                   sm->acct_multi_session_id);
2876                 if (os_snprintf_error(buflen - len, ret))
2877                         return len;
2878                 len += ret;
2879         }
2880
2881         name1 = eap_server_get_name(0, sm->eap_type_authsrv);
2882         name2 = eap_server_get_name(0, sm->eap_type_supp);
2883         ret = os_snprintf(buf + len, buflen - len,
2884                           "last_eap_type_as=%d (%s)\n"
2885                           "last_eap_type_sta=%d (%s)\n",
2886                           sm->eap_type_authsrv, name1,
2887                           sm->eap_type_supp, name2);
2888         if (os_snprintf_error(buflen - len, ret))
2889                 return len;
2890         len += ret;
2891
2892         return len;
2893 }
2894
2895
2896 #ifdef CONFIG_HS20
2897 static void ieee802_1x_wnm_notif_send(void *eloop_ctx, void *timeout_ctx)
2898 {
2899         struct hostapd_data *hapd = eloop_ctx;
2900         struct sta_info *sta = timeout_ctx;
2901
2902         if (sta->remediation) {
2903                 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2904                            MACSTR " to indicate Subscription Remediation",
2905                            MAC2STR(sta->addr));
2906                 hs20_send_wnm_notification(hapd, sta->addr,
2907                                            sta->remediation_method,
2908                                            sta->remediation_url);
2909                 os_free(sta->remediation_url);
2910                 sta->remediation_url = NULL;
2911         }
2912
2913         if (sta->hs20_deauth_req) {
2914                 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2915                            MACSTR " to indicate imminent deauthentication",
2916                            MAC2STR(sta->addr));
2917                 hs20_send_wnm_notification_deauth_req(hapd, sta->addr,
2918                                                       sta->hs20_deauth_req);
2919         }
2920
2921         if (sta->hs20_t_c_filtering) {
2922                 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2923                            MACSTR " to indicate Terms and Conditions filtering",
2924                            MAC2STR(sta->addr));
2925                 hs20_send_wnm_notification_t_c(hapd, sta->addr, sta->t_c_url);
2926                 os_free(sta->t_c_url);
2927                 sta->t_c_url = NULL;
2928         }
2929 }
2930 #endif /* CONFIG_HS20 */
2931
2932
2933 static void ieee802_1x_finished(struct hostapd_data *hapd,
2934                                 struct sta_info *sta, int success,
2935                                 int remediation)
2936 {
2937         const u8 *key;
2938         size_t len;
2939         /* TODO: get PMKLifetime from WPA parameters */
2940         static const int dot11RSNAConfigPMKLifetime = 43200;
2941         unsigned int session_timeout;
2942         struct os_reltime now, remaining;
2943
2944 #ifdef CONFIG_HS20
2945         if (remediation && !sta->remediation) {
2946                 sta->remediation = 1;
2947                 os_free(sta->remediation_url);
2948                 sta->remediation_url =
2949                         os_strdup(hapd->conf->subscr_remediation_url);
2950                 sta->remediation_method = 1; /* SOAP-XML SPP */
2951         }
2952
2953         if (success && (sta->remediation || sta->hs20_deauth_req ||
2954                         sta->hs20_t_c_filtering)) {
2955                 wpa_printf(MSG_DEBUG, "HS 2.0: Schedule WNM-Notification to "
2956                            MACSTR " in 100 ms", MAC2STR(sta->addr));
2957                 eloop_cancel_timeout(ieee802_1x_wnm_notif_send, hapd, sta);
2958                 eloop_register_timeout(0, 100000, ieee802_1x_wnm_notif_send,
2959                                        hapd, sta);
2960         }
2961 #endif /* CONFIG_HS20 */
2962
2963 #ifdef CONFIG_MACSEC
2964         ieee802_1x_notify_create_actor_hapd(hapd, sta);
2965 #endif /* CONFIG_MACSEC */
2966
2967         key = ieee802_1x_get_key(sta->eapol_sm, &len);
2968         if (sta->session_timeout_set) {
2969                 os_get_reltime(&now);
2970                 os_reltime_sub(&sta->session_timeout, &now, &remaining);
2971                 session_timeout = (remaining.sec > 0) ? remaining.sec : 1;
2972         } else {
2973                 session_timeout = dot11RSNAConfigPMKLifetime;
2974         }
2975         if (success && key && len >= PMK_LEN && !sta->remediation &&
2976             !sta->hs20_deauth_requested &&
2977             wpa_auth_pmksa_add(sta->wpa_sm, key, len, session_timeout,
2978                                sta->eapol_sm) == 0) {
2979                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
2980                                HOSTAPD_LEVEL_DEBUG,
2981                                "Added PMKSA cache entry (IEEE 802.1X)");
2982         }
2983
2984         if (!success) {
2985                 /*
2986                  * Many devices require deauthentication after WPS provisioning
2987                  * and some may not be be able to do that themselves, so
2988                  * disconnect the client here. In addition, this may also
2989                  * benefit IEEE 802.1X/EAPOL authentication cases, too since
2990                  * the EAPOL PAE state machine would remain in HELD state for
2991                  * considerable amount of time and some EAP methods, like
2992                  * EAP-FAST with anonymous provisioning, may require another
2993                  * EAPOL authentication to be started to complete connection.
2994                  */
2995                 ap_sta_delayed_1x_auth_fail_disconnect(hapd, sta);
2996         }
2997 }