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      1 /*
      2  * hostapd / IEEE 802.1X-2004 Authenticator
      3  * Copyright (c) 2002-2012, Jouni Malinen <j (at) w1.fi>
      4  *
      5  * This software may be distributed under the terms of the BSD license.
      6  * See README for more details.
      7  */
      8 
      9 #include "utils/includes.h"
     10 
     11 #include "utils/common.h"
     12 #include "utils/eloop.h"
     13 #include "crypto/md5.h"
     14 #include "crypto/crypto.h"
     15 #include "crypto/random.h"
     16 #include "common/ieee802_11_defs.h"
     17 #include "radius/radius.h"
     18 #include "radius/radius_client.h"
     19 #include "eap_server/eap.h"
     20 #include "eap_common/eap_wsc_common.h"
     21 #include "eapol_auth/eapol_auth_sm.h"
     22 #include "eapol_auth/eapol_auth_sm_i.h"
     23 #include "p2p/p2p.h"
     24 #include "hostapd.h"
     25 #include "accounting.h"
     26 #include "sta_info.h"
     27 #include "wpa_auth.h"
     28 #include "preauth_auth.h"
     29 #include "pmksa_cache_auth.h"
     30 #include "ap_config.h"
     31 #include "ap_drv_ops.h"
     32 #include "wps_hostapd.h"
     33 #include "hs20.h"
     34 /* FIX: Not really a good thing to require ieee802_11.h here.. (FILS) */
     35 #include "ieee802_11.h"
     36 #include "ieee802_1x.h"
     37 
     38 
     39 #ifdef CONFIG_HS20
     40 static void ieee802_1x_wnm_notif_send(void *eloop_ctx, void *timeout_ctx);
     41 #endif /* CONFIG_HS20 */
     42 static void ieee802_1x_finished(struct hostapd_data *hapd,
     43 				struct sta_info *sta, int success,
     44 				int remediation);
     45 
     46 
     47 static void ieee802_1x_send(struct hostapd_data *hapd, struct sta_info *sta,
     48 			    u8 type, const u8 *data, size_t datalen)
     49 {
     50 	u8 *buf;
     51 	struct ieee802_1x_hdr *xhdr;
     52 	size_t len;
     53 	int encrypt = 0;
     54 
     55 	len = sizeof(*xhdr) + datalen;
     56 	buf = os_zalloc(len);
     57 	if (buf == NULL) {
     58 		wpa_printf(MSG_ERROR, "malloc() failed for "
     59 			   "ieee802_1x_send(len=%lu)",
     60 			   (unsigned long) len);
     61 		return;
     62 	}
     63 
     64 	xhdr = (struct ieee802_1x_hdr *) buf;
     65 	xhdr->version = hapd->conf->eapol_version;
     66 	xhdr->type = type;
     67 	xhdr->length = host_to_be16(datalen);
     68 
     69 	if (datalen > 0 && data != NULL)
     70 		os_memcpy(xhdr + 1, data, datalen);
     71 
     72 	if (wpa_auth_pairwise_set(sta->wpa_sm))
     73 		encrypt = 1;
     74 #ifdef CONFIG_TESTING_OPTIONS
     75 	if (hapd->ext_eapol_frame_io) {
     76 		size_t hex_len = 2 * len + 1;
     77 		char *hex = os_malloc(hex_len);
     78 
     79 		if (hex) {
     80 			wpa_snprintf_hex(hex, hex_len, buf, len);
     81 			wpa_msg(hapd->msg_ctx, MSG_INFO,
     82 				"EAPOL-TX " MACSTR " %s",
     83 				MAC2STR(sta->addr), hex);
     84 			os_free(hex);
     85 		}
     86 	} else
     87 #endif /* CONFIG_TESTING_OPTIONS */
     88 	if (sta->flags & WLAN_STA_PREAUTH) {
     89 		rsn_preauth_send(hapd, sta, buf, len);
     90 	} else {
     91 		hostapd_drv_hapd_send_eapol(
     92 			hapd, sta->addr, buf, len,
     93 			encrypt, hostapd_sta_flags_to_drv(sta->flags));
     94 	}
     95 
     96 	os_free(buf);
     97 }
     98 
     99 
    100 void ieee802_1x_set_sta_authorized(struct hostapd_data *hapd,
    101 				   struct sta_info *sta, int authorized)
    102 {
    103 	int res;
    104 
    105 	if (sta->flags & WLAN_STA_PREAUTH)
    106 		return;
    107 
    108 	if (authorized) {
    109 		ap_sta_set_authorized(hapd, sta, 1);
    110 		res = hostapd_set_authorized(hapd, sta, 1);
    111 		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
    112 			       HOSTAPD_LEVEL_DEBUG, "authorizing port");
    113 	} else {
    114 		ap_sta_set_authorized(hapd, sta, 0);
    115 		res = hostapd_set_authorized(hapd, sta, 0);
    116 		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
    117 			       HOSTAPD_LEVEL_DEBUG, "unauthorizing port");
    118 	}
    119 
    120 	if (res && errno != ENOENT) {
    121 		wpa_printf(MSG_DEBUG, "Could not set station " MACSTR
    122 			   " flags for kernel driver (errno=%d).",
    123 			   MAC2STR(sta->addr), errno);
    124 	}
    125 
    126 	if (authorized) {
    127 		os_get_reltime(&sta->connected_time);
    128 		accounting_sta_start(hapd, sta);
    129 	}
    130 }
    131 
    132 
    133 #ifndef CONFIG_FIPS
    134 #ifndef CONFIG_NO_RC4
    135 
    136 static void ieee802_1x_tx_key_one(struct hostapd_data *hapd,
    137 				  struct sta_info *sta,
    138 				  int idx, int broadcast,
    139 				  u8 *key_data, size_t key_len)
    140 {
    141 	u8 *buf, *ekey;
    142 	struct ieee802_1x_hdr *hdr;
    143 	struct ieee802_1x_eapol_key *key;
    144 	size_t len, ekey_len;
    145 	struct eapol_state_machine *sm = sta->eapol_sm;
    146 
    147 	if (sm == NULL)
    148 		return;
    149 
    150 	len = sizeof(*key) + key_len;
    151 	buf = os_zalloc(sizeof(*hdr) + len);
    152 	if (buf == NULL)
    153 		return;
    154 
    155 	hdr = (struct ieee802_1x_hdr *) buf;
    156 	key = (struct ieee802_1x_eapol_key *) (hdr + 1);
    157 	key->type = EAPOL_KEY_TYPE_RC4;
    158 	WPA_PUT_BE16(key->key_length, key_len);
    159 	wpa_get_ntp_timestamp(key->replay_counter);
    160 
    161 	if (random_get_bytes(key->key_iv, sizeof(key->key_iv))) {
    162 		wpa_printf(MSG_ERROR, "Could not get random numbers");
    163 		os_free(buf);
    164 		return;
    165 	}
    166 
    167 	key->key_index = idx | (broadcast ? 0 : BIT(7));
    168 	if (hapd->conf->eapol_key_index_workaround) {
    169 		/* According to some information, WinXP Supplicant seems to
    170 		 * interpret bit7 as an indication whether the key is to be
    171 		 * activated, so make it possible to enable workaround that
    172 		 * sets this bit for all keys. */
    173 		key->key_index |= BIT(7);
    174 	}
    175 
    176 	/* Key is encrypted using "Key-IV + MSK[0..31]" as the RC4-key and
    177 	 * MSK[32..63] is used to sign the message. */
    178 	if (sm->eap_if->eapKeyData == NULL || sm->eap_if->eapKeyDataLen < 64) {
    179 		wpa_printf(MSG_ERROR, "No eapKeyData available for encrypting "
    180 			   "and signing EAPOL-Key");
    181 		os_free(buf);
    182 		return;
    183 	}
    184 	os_memcpy((u8 *) (key + 1), key_data, key_len);
    185 	ekey_len = sizeof(key->key_iv) + 32;
    186 	ekey = os_malloc(ekey_len);
    187 	if (ekey == NULL) {
    188 		wpa_printf(MSG_ERROR, "Could not encrypt key");
    189 		os_free(buf);
    190 		return;
    191 	}
    192 	os_memcpy(ekey, key->key_iv, sizeof(key->key_iv));
    193 	os_memcpy(ekey + sizeof(key->key_iv), sm->eap_if->eapKeyData, 32);
    194 	rc4_skip(ekey, ekey_len, 0, (u8 *) (key + 1), key_len);
    195 	os_free(ekey);
    196 
    197 	/* This header is needed here for HMAC-MD5, but it will be regenerated
    198 	 * in ieee802_1x_send() */
    199 	hdr->version = hapd->conf->eapol_version;
    200 	hdr->type = IEEE802_1X_TYPE_EAPOL_KEY;
    201 	hdr->length = host_to_be16(len);
    202 	hmac_md5(sm->eap_if->eapKeyData + 32, 32, buf, sizeof(*hdr) + len,
    203 		 key->key_signature);
    204 
    205 	wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key to " MACSTR
    206 		   " (%s index=%d)", MAC2STR(sm->addr),
    207 		   broadcast ? "broadcast" : "unicast", idx);
    208 	ieee802_1x_send(hapd, sta, IEEE802_1X_TYPE_EAPOL_KEY, (u8 *) key, len);
    209 	if (sta->eapol_sm)
    210 		sta->eapol_sm->dot1xAuthEapolFramesTx++;
    211 	os_free(buf);
    212 }
    213 
    214 
    215 static void ieee802_1x_tx_key(struct hostapd_data *hapd, struct sta_info *sta)
    216 {
    217 	struct eapol_authenticator *eapol = hapd->eapol_auth;
    218 	struct eapol_state_machine *sm = sta->eapol_sm;
    219 
    220 	if (sm == NULL || !sm->eap_if->eapKeyData)
    221 		return;
    222 
    223 	wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key(s) to " MACSTR,
    224 		   MAC2STR(sta->addr));
    225 
    226 #ifndef CONFIG_NO_VLAN
    227 	if (sta->vlan_id > 0) {
    228 		wpa_printf(MSG_ERROR, "Using WEP with vlans is not supported.");
    229 		return;
    230 	}
    231 #endif /* CONFIG_NO_VLAN */
    232 
    233 	if (eapol->default_wep_key) {
    234 		ieee802_1x_tx_key_one(hapd, sta, eapol->default_wep_key_idx, 1,
    235 				      eapol->default_wep_key,
    236 				      hapd->conf->default_wep_key_len);
    237 	}
    238 
    239 	if (hapd->conf->individual_wep_key_len > 0) {
    240 		u8 *ikey;
    241 		ikey = os_malloc(hapd->conf->individual_wep_key_len);
    242 		if (ikey == NULL ||
    243 		    random_get_bytes(ikey, hapd->conf->individual_wep_key_len))
    244 		{
    245 			wpa_printf(MSG_ERROR, "Could not generate random "
    246 				   "individual WEP key.");
    247 			os_free(ikey);
    248 			return;
    249 		}
    250 
    251 		wpa_hexdump_key(MSG_DEBUG, "Individual WEP key",
    252 				ikey, hapd->conf->individual_wep_key_len);
    253 
    254 		ieee802_1x_tx_key_one(hapd, sta, 0, 0, ikey,
    255 				      hapd->conf->individual_wep_key_len);
    256 
    257 		/* TODO: set encryption in TX callback, i.e., only after STA
    258 		 * has ACKed EAPOL-Key frame */
    259 		if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
    260 					sta->addr, 0, 1, NULL, 0, ikey,
    261 					hapd->conf->individual_wep_key_len)) {
    262 			wpa_printf(MSG_ERROR, "Could not set individual WEP "
    263 				   "encryption.");
    264 		}
    265 
    266 		os_free(ikey);
    267 	}
    268 }
    269 
    270 #endif /* CONFIG_NO_RC4 */
    271 #endif /* CONFIG_FIPS */
    272 
    273 
    274 const char *radius_mode_txt(struct hostapd_data *hapd)
    275 {
    276 	switch (hapd->iface->conf->hw_mode) {
    277 	case HOSTAPD_MODE_IEEE80211AD:
    278 		return "802.11ad";
    279 	case HOSTAPD_MODE_IEEE80211A:
    280 		return "802.11a";
    281 	case HOSTAPD_MODE_IEEE80211G:
    282 		return "802.11g";
    283 	case HOSTAPD_MODE_IEEE80211B:
    284 	default:
    285 		return "802.11b";
    286 	}
    287 }
    288 
    289 
    290 int radius_sta_rate(struct hostapd_data *hapd, struct sta_info *sta)
    291 {
    292 	int i;
    293 	u8 rate = 0;
    294 
    295 	for (i = 0; i < sta->supported_rates_len; i++)
    296 		if ((sta->supported_rates[i] & 0x7f) > rate)
    297 			rate = sta->supported_rates[i] & 0x7f;
    298 
    299 	return rate;
    300 }
    301 
    302 
    303 #ifndef CONFIG_NO_RADIUS
    304 static void ieee802_1x_learn_identity(struct hostapd_data *hapd,
    305 				      struct eapol_state_machine *sm,
    306 				      const u8 *eap, size_t len)
    307 {
    308 	const u8 *identity;
    309 	size_t identity_len;
    310 	const struct eap_hdr *hdr = (const struct eap_hdr *) eap;
    311 
    312 	if (len <= sizeof(struct eap_hdr) ||
    313 	    (hdr->code == EAP_CODE_RESPONSE &&
    314 	     eap[sizeof(struct eap_hdr)] != EAP_TYPE_IDENTITY) ||
    315 	    (hdr->code == EAP_CODE_INITIATE &&
    316 	     eap[sizeof(struct eap_hdr)] != EAP_ERP_TYPE_REAUTH) ||
    317 	    (hdr->code != EAP_CODE_RESPONSE &&
    318 	     hdr->code != EAP_CODE_INITIATE))
    319 		return;
    320 
    321 	eap_erp_update_identity(sm->eap, eap, len);
    322 	identity = eap_get_identity(sm->eap, &identity_len);
    323 	if (identity == NULL)
    324 		return;
    325 
    326 	/* Save station identity for future RADIUS packets */
    327 	os_free(sm->identity);
    328 	sm->identity = (u8 *) dup_binstr(identity, identity_len);
    329 	if (sm->identity == NULL) {
    330 		sm->identity_len = 0;
    331 		return;
    332 	}
    333 
    334 	sm->identity_len = identity_len;
    335 	hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
    336 		       HOSTAPD_LEVEL_DEBUG, "STA identity '%s'", sm->identity);
    337 	sm->dot1xAuthEapolRespIdFramesRx++;
    338 }
    339 
    340 
    341 static int add_common_radius_sta_attr_rsn(struct hostapd_data *hapd,
    342 					  struct hostapd_radius_attr *req_attr,
    343 					  struct sta_info *sta,
    344 					  struct radius_msg *msg)
    345 {
    346 	u32 suite;
    347 	int ver, val;
    348 
    349 	ver = wpa_auth_sta_wpa_version(sta->wpa_sm);
    350 	val = wpa_auth_get_pairwise(sta->wpa_sm);
    351 	suite = wpa_cipher_to_suite(ver, val);
    352 	if (val != -1 &&
    353 	    !hostapd_config_get_radius_attr(req_attr,
    354 					    RADIUS_ATTR_WLAN_PAIRWISE_CIPHER) &&
    355 	    !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_PAIRWISE_CIPHER,
    356 				       suite)) {
    357 		wpa_printf(MSG_ERROR, "Could not add WLAN-Pairwise-Cipher");
    358 		return -1;
    359 	}
    360 
    361 	suite = wpa_cipher_to_suite(((hapd->conf->wpa & 0x2) ||
    362 				     hapd->conf->osen) ?
    363 				    WPA_PROTO_RSN : WPA_PROTO_WPA,
    364 				    hapd->conf->wpa_group);
    365 	if (!hostapd_config_get_radius_attr(req_attr,
    366 					    RADIUS_ATTR_WLAN_GROUP_CIPHER) &&
    367 	    !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_GROUP_CIPHER,
    368 				       suite)) {
    369 		wpa_printf(MSG_ERROR, "Could not add WLAN-Group-Cipher");
    370 		return -1;
    371 	}
    372 
    373 	val = wpa_auth_sta_key_mgmt(sta->wpa_sm);
    374 	suite = wpa_akm_to_suite(val);
    375 	if (val != -1 &&
    376 	    !hostapd_config_get_radius_attr(req_attr,
    377 					    RADIUS_ATTR_WLAN_AKM_SUITE) &&
    378 	    !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_AKM_SUITE,
    379 				       suite)) {
    380 		wpa_printf(MSG_ERROR, "Could not add WLAN-AKM-Suite");
    381 		return -1;
    382 	}
    383 
    384 #ifdef CONFIG_IEEE80211W
    385 	if (hapd->conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
    386 		suite = wpa_cipher_to_suite(WPA_PROTO_RSN,
    387 					    hapd->conf->group_mgmt_cipher);
    388 		if (!hostapd_config_get_radius_attr(
    389 			    req_attr, RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER) &&
    390 		    !radius_msg_add_attr_int32(
    391 			    msg, RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER, suite)) {
    392 			wpa_printf(MSG_ERROR,
    393 				   "Could not add WLAN-Group-Mgmt-Cipher");
    394 			return -1;
    395 		}
    396 	}
    397 #endif /* CONFIG_IEEE80211W */
    398 
    399 	return 0;
    400 }
    401 
    402 
    403 static int add_common_radius_sta_attr(struct hostapd_data *hapd,
    404 				      struct hostapd_radius_attr *req_attr,
    405 				      struct sta_info *sta,
    406 				      struct radius_msg *msg)
    407 {
    408 	char buf[128];
    409 
    410 	if (!hostapd_config_get_radius_attr(req_attr,
    411 					    RADIUS_ATTR_SERVICE_TYPE) &&
    412 	    !radius_msg_add_attr_int32(msg, RADIUS_ATTR_SERVICE_TYPE,
    413 				       RADIUS_SERVICE_TYPE_FRAMED)) {
    414 		wpa_printf(MSG_ERROR, "Could not add Service-Type");
    415 		return -1;
    416 	}
    417 
    418 	if (!hostapd_config_get_radius_attr(req_attr,
    419 					    RADIUS_ATTR_NAS_PORT) &&
    420 	    sta->aid > 0 &&
    421 	    !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT, sta->aid)) {
    422 		wpa_printf(MSG_ERROR, "Could not add NAS-Port");
    423 		return -1;
    424 	}
    425 
    426 	os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
    427 		    MAC2STR(sta->addr));
    428 	buf[sizeof(buf) - 1] = '\0';
    429 	if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
    430 				 (u8 *) buf, os_strlen(buf))) {
    431 		wpa_printf(MSG_ERROR, "Could not add Calling-Station-Id");
    432 		return -1;
    433 	}
    434 
    435 	if (sta->flags & WLAN_STA_PREAUTH) {
    436 		os_strlcpy(buf, "IEEE 802.11i Pre-Authentication",
    437 			   sizeof(buf));
    438 	} else {
    439 		os_snprintf(buf, sizeof(buf), "CONNECT %d%sMbps %s",
    440 			    radius_sta_rate(hapd, sta) / 2,
    441 			    (radius_sta_rate(hapd, sta) & 1) ? ".5" : "",
    442 			    radius_mode_txt(hapd));
    443 		buf[sizeof(buf) - 1] = '\0';
    444 	}
    445 	if (!hostapd_config_get_radius_attr(req_attr,
    446 					    RADIUS_ATTR_CONNECT_INFO) &&
    447 	    !radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
    448 				 (u8 *) buf, os_strlen(buf))) {
    449 		wpa_printf(MSG_ERROR, "Could not add Connect-Info");
    450 		return -1;
    451 	}
    452 
    453 	if (sta->acct_session_id) {
    454 		os_snprintf(buf, sizeof(buf), "%016llX",
    455 			    (unsigned long long) sta->acct_session_id);
    456 		if (!radius_msg_add_attr(msg, RADIUS_ATTR_ACCT_SESSION_ID,
    457 					 (u8 *) buf, os_strlen(buf))) {
    458 			wpa_printf(MSG_ERROR, "Could not add Acct-Session-Id");
    459 			return -1;
    460 		}
    461 	}
    462 
    463 	if ((hapd->conf->wpa & 2) &&
    464 	    !hapd->conf->disable_pmksa_caching &&
    465 	    sta->eapol_sm && sta->eapol_sm->acct_multi_session_id) {
    466 		os_snprintf(buf, sizeof(buf), "%016llX",
    467 			    (unsigned long long)
    468 			    sta->eapol_sm->acct_multi_session_id);
    469 		if (!radius_msg_add_attr(
    470 			    msg, RADIUS_ATTR_ACCT_MULTI_SESSION_ID,
    471 			    (u8 *) buf, os_strlen(buf))) {
    472 			wpa_printf(MSG_INFO,
    473 				   "Could not add Acct-Multi-Session-Id");
    474 			return -1;
    475 		}
    476 	}
    477 
    478 #ifdef CONFIG_IEEE80211R_AP
    479 	if (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) &&
    480 	    sta->wpa_sm &&
    481 	    (wpa_key_mgmt_ft(wpa_auth_sta_key_mgmt(sta->wpa_sm)) ||
    482 	     sta->auth_alg == WLAN_AUTH_FT) &&
    483 	    !hostapd_config_get_radius_attr(req_attr,
    484 					    RADIUS_ATTR_MOBILITY_DOMAIN_ID) &&
    485 	    !radius_msg_add_attr_int32(msg, RADIUS_ATTR_MOBILITY_DOMAIN_ID,
    486 				       WPA_GET_BE16(
    487 					       hapd->conf->mobility_domain))) {
    488 		wpa_printf(MSG_ERROR, "Could not add Mobility-Domain-Id");
    489 		return -1;
    490 	}
    491 #endif /* CONFIG_IEEE80211R_AP */
    492 
    493 	if ((hapd->conf->wpa || hapd->conf->osen) && sta->wpa_sm &&
    494 	    add_common_radius_sta_attr_rsn(hapd, req_attr, sta, msg) < 0)
    495 		return -1;
    496 
    497 	return 0;
    498 }
    499 
    500 
    501 int add_common_radius_attr(struct hostapd_data *hapd,
    502 			   struct hostapd_radius_attr *req_attr,
    503 			   struct sta_info *sta,
    504 			   struct radius_msg *msg)
    505 {
    506 	char buf[128];
    507 	struct hostapd_radius_attr *attr;
    508 	int len;
    509 
    510 	if (!hostapd_config_get_radius_attr(req_attr,
    511 					    RADIUS_ATTR_NAS_IP_ADDRESS) &&
    512 	    hapd->conf->own_ip_addr.af == AF_INET &&
    513 	    !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
    514 				 (u8 *) &hapd->conf->own_ip_addr.u.v4, 4)) {
    515 		wpa_printf(MSG_ERROR, "Could not add NAS-IP-Address");
    516 		return -1;
    517 	}
    518 
    519 #ifdef CONFIG_IPV6
    520 	if (!hostapd_config_get_radius_attr(req_attr,
    521 					    RADIUS_ATTR_NAS_IPV6_ADDRESS) &&
    522 	    hapd->conf->own_ip_addr.af == AF_INET6 &&
    523 	    !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IPV6_ADDRESS,
    524 				 (u8 *) &hapd->conf->own_ip_addr.u.v6, 16)) {
    525 		wpa_printf(MSG_ERROR, "Could not add NAS-IPv6-Address");
    526 		return -1;
    527 	}
    528 #endif /* CONFIG_IPV6 */
    529 
    530 	if (!hostapd_config_get_radius_attr(req_attr,
    531 					    RADIUS_ATTR_NAS_IDENTIFIER) &&
    532 	    hapd->conf->nas_identifier &&
    533 	    !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IDENTIFIER,
    534 				 (u8 *) hapd->conf->nas_identifier,
    535 				 os_strlen(hapd->conf->nas_identifier))) {
    536 		wpa_printf(MSG_ERROR, "Could not add NAS-Identifier");
    537 		return -1;
    538 	}
    539 
    540 	len = os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT ":",
    541 			  MAC2STR(hapd->own_addr));
    542 	os_memcpy(&buf[len], hapd->conf->ssid.ssid,
    543 		  hapd->conf->ssid.ssid_len);
    544 	len += hapd->conf->ssid.ssid_len;
    545 	if (!hostapd_config_get_radius_attr(req_attr,
    546 					    RADIUS_ATTR_CALLED_STATION_ID) &&
    547 	    !radius_msg_add_attr(msg, RADIUS_ATTR_CALLED_STATION_ID,
    548 				 (u8 *) buf, len)) {
    549 		wpa_printf(MSG_ERROR, "Could not add Called-Station-Id");
    550 		return -1;
    551 	}
    552 
    553 	if (!hostapd_config_get_radius_attr(req_attr,
    554 					    RADIUS_ATTR_NAS_PORT_TYPE) &&
    555 	    !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
    556 				       RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
    557 		wpa_printf(MSG_ERROR, "Could not add NAS-Port-Type");
    558 		return -1;
    559 	}
    560 
    561 #ifdef CONFIG_INTERWORKING
    562 	if (hapd->conf->interworking &&
    563 	    !is_zero_ether_addr(hapd->conf->hessid)) {
    564 		os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
    565 			    MAC2STR(hapd->conf->hessid));
    566 		buf[sizeof(buf) - 1] = '\0';
    567 		if (!hostapd_config_get_radius_attr(req_attr,
    568 						    RADIUS_ATTR_WLAN_HESSID) &&
    569 		    !radius_msg_add_attr(msg, RADIUS_ATTR_WLAN_HESSID,
    570 					 (u8 *) buf, os_strlen(buf))) {
    571 			wpa_printf(MSG_ERROR, "Could not add WLAN-HESSID");
    572 			return -1;
    573 		}
    574 	}
    575 #endif /* CONFIG_INTERWORKING */
    576 
    577 	if (sta && add_common_radius_sta_attr(hapd, req_attr, sta, msg) < 0)
    578 		return -1;
    579 
    580 	for (attr = req_attr; attr; attr = attr->next) {
    581 		if (!radius_msg_add_attr(msg, attr->type,
    582 					 wpabuf_head(attr->val),
    583 					 wpabuf_len(attr->val))) {
    584 			wpa_printf(MSG_ERROR, "Could not add RADIUS "
    585 				   "attribute");
    586 			return -1;
    587 		}
    588 	}
    589 
    590 	return 0;
    591 }
    592 
    593 
    594 void ieee802_1x_encapsulate_radius(struct hostapd_data *hapd,
    595 				   struct sta_info *sta,
    596 				   const u8 *eap, size_t len)
    597 {
    598 	struct radius_msg *msg;
    599 	struct eapol_state_machine *sm = sta->eapol_sm;
    600 
    601 	if (sm == NULL)
    602 		return;
    603 
    604 	ieee802_1x_learn_identity(hapd, sm, eap, len);
    605 
    606 	wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
    607 		   "packet");
    608 
    609 	sm->radius_identifier = radius_client_get_id(hapd->radius);
    610 	msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
    611 			     sm->radius_identifier);
    612 	if (msg == NULL) {
    613 		wpa_printf(MSG_INFO, "Could not create new RADIUS packet");
    614 		return;
    615 	}
    616 
    617 	if (radius_msg_make_authenticator(msg) < 0) {
    618 		wpa_printf(MSG_INFO, "Could not make Request Authenticator");
    619 		goto fail;
    620 	}
    621 
    622 	if (sm->identity &&
    623 	    !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
    624 				 sm->identity, sm->identity_len)) {
    625 		wpa_printf(MSG_INFO, "Could not add User-Name");
    626 		goto fail;
    627 	}
    628 
    629 	if (add_common_radius_attr(hapd, hapd->conf->radius_auth_req_attr, sta,
    630 				   msg) < 0)
    631 		goto fail;
    632 
    633 	/* TODO: should probably check MTU from driver config; 2304 is max for
    634 	 * IEEE 802.11, but use 1400 to avoid problems with too large packets
    635 	 */
    636 	if (!hostapd_config_get_radius_attr(hapd->conf->radius_auth_req_attr,
    637 					    RADIUS_ATTR_FRAMED_MTU) &&
    638 	    !radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
    639 		wpa_printf(MSG_INFO, "Could not add Framed-MTU");
    640 		goto fail;
    641 	}
    642 
    643 	if (!radius_msg_add_eap(msg, eap, len)) {
    644 		wpa_printf(MSG_INFO, "Could not add EAP-Message");
    645 		goto fail;
    646 	}
    647 
    648 	/* State attribute must be copied if and only if this packet is
    649 	 * Access-Request reply to the previous Access-Challenge */
    650 	if (sm->last_recv_radius &&
    651 	    radius_msg_get_hdr(sm->last_recv_radius)->code ==
    652 	    RADIUS_CODE_ACCESS_CHALLENGE) {
    653 		int res = radius_msg_copy_attr(msg, sm->last_recv_radius,
    654 					       RADIUS_ATTR_STATE);
    655 		if (res < 0) {
    656 			wpa_printf(MSG_INFO, "Could not copy State attribute from previous Access-Challenge");
    657 			goto fail;
    658 		}
    659 		if (res > 0) {
    660 			wpa_printf(MSG_DEBUG, "Copied RADIUS State Attribute");
    661 		}
    662 	}
    663 
    664 	if (hapd->conf->radius_request_cui) {
    665 		const u8 *cui;
    666 		size_t cui_len;
    667 		/* Add previously learned CUI or nul CUI to request CUI */
    668 		if (sm->radius_cui) {
    669 			cui = wpabuf_head(sm->radius_cui);
    670 			cui_len = wpabuf_len(sm->radius_cui);
    671 		} else {
    672 			cui = (const u8 *) "\0";
    673 			cui_len = 1;
    674 		}
    675 		if (!radius_msg_add_attr(msg,
    676 					 RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
    677 					 cui, cui_len)) {
    678 			wpa_printf(MSG_ERROR, "Could not add CUI");
    679 			goto fail;
    680 		}
    681 	}
    682 
    683 #ifdef CONFIG_HS20
    684 	if (hapd->conf->hs20) {
    685 		u8 ver = 1; /* Release 2 */
    686 		if (!radius_msg_add_wfa(
    687 			    msg, RADIUS_VENDOR_ATTR_WFA_HS20_AP_VERSION,
    688 			    &ver, 1)) {
    689 			wpa_printf(MSG_ERROR, "Could not add HS 2.0 AP "
    690 				   "version");
    691 			goto fail;
    692 		}
    693 
    694 		if (sta->hs20_ie && wpabuf_len(sta->hs20_ie) > 0) {
    695 			const u8 *pos;
    696 			u8 buf[3];
    697 			u16 id;
    698 			pos = wpabuf_head_u8(sta->hs20_ie);
    699 			buf[0] = (*pos) >> 4;
    700 			if (((*pos) & HS20_PPS_MO_ID_PRESENT) &&
    701 			    wpabuf_len(sta->hs20_ie) >= 3)
    702 				id = WPA_GET_LE16(pos + 1);
    703 			else
    704 				id = 0;
    705 			WPA_PUT_BE16(buf + 1, id);
    706 			if (!radius_msg_add_wfa(
    707 				    msg,
    708 				    RADIUS_VENDOR_ATTR_WFA_HS20_STA_VERSION,
    709 				    buf, sizeof(buf))) {
    710 				wpa_printf(MSG_ERROR, "Could not add HS 2.0 "
    711 					   "STA version");
    712 				goto fail;
    713 			}
    714 		}
    715 	}
    716 #endif /* CONFIG_HS20 */
    717 
    718 	if (radius_client_send(hapd->radius, msg, RADIUS_AUTH, sta->addr) < 0)
    719 		goto fail;
    720 
    721 	return;
    722 
    723  fail:
    724 	radius_msg_free(msg);
    725 }
    726 #endif /* CONFIG_NO_RADIUS */
    727 
    728 
    729 static void handle_eap_response(struct hostapd_data *hapd,
    730 				struct sta_info *sta, struct eap_hdr *eap,
    731 				size_t len)
    732 {
    733 	u8 type, *data;
    734 	struct eapol_state_machine *sm = sta->eapol_sm;
    735 	if (sm == NULL)
    736 		return;
    737 
    738 	data = (u8 *) (eap + 1);
    739 
    740 	if (len < sizeof(*eap) + 1) {
    741 		wpa_printf(MSG_INFO, "handle_eap_response: too short response data");
    742 		return;
    743 	}
    744 
    745 	sm->eap_type_supp = type = data[0];
    746 
    747 	hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
    748 		       HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
    749 		       "id=%d len=%d) from STA: EAP Response-%s (%d)",
    750 		       eap->code, eap->identifier, be_to_host16(eap->length),
    751 		       eap_server_get_name(0, type), type);
    752 
    753 	sm->dot1xAuthEapolRespFramesRx++;
    754 
    755 	wpabuf_free(sm->eap_if->eapRespData);
    756 	sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
    757 	sm->eapolEap = TRUE;
    758 }
    759 
    760 
    761 static void handle_eap_initiate(struct hostapd_data *hapd,
    762 				struct sta_info *sta, struct eap_hdr *eap,
    763 				size_t len)
    764 {
    765 #ifdef CONFIG_ERP
    766 	u8 type, *data;
    767 	struct eapol_state_machine *sm = sta->eapol_sm;
    768 
    769 	if (sm == NULL)
    770 		return;
    771 
    772 	if (len < sizeof(*eap) + 1) {
    773 		wpa_printf(MSG_INFO,
    774 			   "handle_eap_initiate: too short response data");
    775 		return;
    776 	}
    777 
    778 	data = (u8 *) (eap + 1);
    779 	type = data[0];
    780 
    781 	hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
    782 		       HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
    783 		       "id=%d len=%d) from STA: EAP Initiate type %u",
    784 		       eap->code, eap->identifier, be_to_host16(eap->length),
    785 		       type);
    786 
    787 	wpabuf_free(sm->eap_if->eapRespData);
    788 	sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
    789 	sm->eapolEap = TRUE;
    790 #endif /* CONFIG_ERP */
    791 }
    792 
    793 
    794 /* Process incoming EAP packet from Supplicant */
    795 static void handle_eap(struct hostapd_data *hapd, struct sta_info *sta,
    796 		       u8 *buf, size_t len)
    797 {
    798 	struct eap_hdr *eap;
    799 	u16 eap_len;
    800 
    801 	if (len < sizeof(*eap)) {
    802 		wpa_printf(MSG_INFO, "   too short EAP packet");
    803 		return;
    804 	}
    805 
    806 	eap = (struct eap_hdr *) buf;
    807 
    808 	eap_len = be_to_host16(eap->length);
    809 	wpa_printf(MSG_DEBUG, "EAP: code=%d identifier=%d length=%d",
    810 		   eap->code, eap->identifier, eap_len);
    811 	if (eap_len < sizeof(*eap)) {
    812 		wpa_printf(MSG_DEBUG, "   Invalid EAP length");
    813 		return;
    814 	} else if (eap_len > len) {
    815 		wpa_printf(MSG_DEBUG, "   Too short frame to contain this EAP "
    816 			   "packet");
    817 		return;
    818 	} else if (eap_len < len) {
    819 		wpa_printf(MSG_DEBUG, "   Ignoring %lu extra bytes after EAP "
    820 			   "packet", (unsigned long) len - eap_len);
    821 	}
    822 
    823 	switch (eap->code) {
    824 	case EAP_CODE_REQUEST:
    825 		wpa_printf(MSG_DEBUG, " (request)");
    826 		return;
    827 	case EAP_CODE_RESPONSE:
    828 		wpa_printf(MSG_DEBUG, " (response)");
    829 		handle_eap_response(hapd, sta, eap, eap_len);
    830 		break;
    831 	case EAP_CODE_SUCCESS:
    832 		wpa_printf(MSG_DEBUG, " (success)");
    833 		return;
    834 	case EAP_CODE_FAILURE:
    835 		wpa_printf(MSG_DEBUG, " (failure)");
    836 		return;
    837 	case EAP_CODE_INITIATE:
    838 		wpa_printf(MSG_DEBUG, " (initiate)");
    839 		handle_eap_initiate(hapd, sta, eap, eap_len);
    840 		break;
    841 	case EAP_CODE_FINISH:
    842 		wpa_printf(MSG_DEBUG, " (finish)");
    843 		break;
    844 	default:
    845 		wpa_printf(MSG_DEBUG, " (unknown code)");
    846 		return;
    847 	}
    848 }
    849 
    850 
    851 struct eapol_state_machine *
    852 ieee802_1x_alloc_eapol_sm(struct hostapd_data *hapd, struct sta_info *sta)
    853 {
    854 	int flags = 0;
    855 	if (sta->flags & WLAN_STA_PREAUTH)
    856 		flags |= EAPOL_SM_PREAUTH;
    857 	if (sta->wpa_sm) {
    858 		flags |= EAPOL_SM_USES_WPA;
    859 		if (wpa_auth_sta_get_pmksa(sta->wpa_sm))
    860 			flags |= EAPOL_SM_FROM_PMKSA_CACHE;
    861 	}
    862 	return eapol_auth_alloc(hapd->eapol_auth, sta->addr, flags,
    863 				sta->wps_ie, sta->p2p_ie, sta,
    864 				sta->identity, sta->radius_cui);
    865 }
    866 
    867 
    868 static void ieee802_1x_save_eapol(struct sta_info *sta, const u8 *buf,
    869 				  size_t len)
    870 {
    871 	if (sta->pending_eapol_rx) {
    872 		wpabuf_free(sta->pending_eapol_rx->buf);
    873 	} else {
    874 		sta->pending_eapol_rx =
    875 			os_malloc(sizeof(*sta->pending_eapol_rx));
    876 		if (!sta->pending_eapol_rx)
    877 			return;
    878 	}
    879 
    880 	sta->pending_eapol_rx->buf = wpabuf_alloc_copy(buf, len);
    881 	if (!sta->pending_eapol_rx->buf) {
    882 		os_free(sta->pending_eapol_rx);
    883 		sta->pending_eapol_rx = NULL;
    884 		return;
    885 	}
    886 
    887 	os_get_reltime(&sta->pending_eapol_rx->rx_time);
    888 }
    889 
    890 
    891 /**
    892  * ieee802_1x_receive - Process the EAPOL frames from the Supplicant
    893  * @hapd: hostapd BSS data
    894  * @sa: Source address (sender of the EAPOL frame)
    895  * @buf: EAPOL frame
    896  * @len: Length of buf in octets
    897  *
    898  * This function is called for each incoming EAPOL frame from the interface
    899  */
    900 void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf,
    901 			size_t len)
    902 {
    903 	struct sta_info *sta;
    904 	struct ieee802_1x_hdr *hdr;
    905 	struct ieee802_1x_eapol_key *key;
    906 	u16 datalen;
    907 	struct rsn_pmksa_cache_entry *pmksa;
    908 	int key_mgmt;
    909 
    910 	if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen &&
    911 	    !hapd->conf->wps_state)
    912 		return;
    913 
    914 	wpa_printf(MSG_DEBUG, "IEEE 802.1X: %lu bytes from " MACSTR,
    915 		   (unsigned long) len, MAC2STR(sa));
    916 	sta = ap_get_sta(hapd, sa);
    917 	if (!sta || (!(sta->flags & (WLAN_STA_ASSOC | WLAN_STA_PREAUTH)) &&
    918 		     !(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED))) {
    919 		wpa_printf(MSG_DEBUG, "IEEE 802.1X data frame from not "
    920 			   "associated/Pre-authenticating STA");
    921 
    922 		if (sta && (sta->flags & WLAN_STA_AUTH)) {
    923 			wpa_printf(MSG_DEBUG, "Saving EAPOL frame from " MACSTR
    924 				   " for later use", MAC2STR(sta->addr));
    925 			ieee802_1x_save_eapol(sta, buf, len);
    926 		}
    927 
    928 		return;
    929 	}
    930 
    931 	if (len < sizeof(*hdr)) {
    932 		wpa_printf(MSG_INFO, "   too short IEEE 802.1X packet");
    933 		return;
    934 	}
    935 
    936 	hdr = (struct ieee802_1x_hdr *) buf;
    937 	datalen = be_to_host16(hdr->length);
    938 	wpa_printf(MSG_DEBUG, "   IEEE 802.1X: version=%d type=%d length=%d",
    939 		   hdr->version, hdr->type, datalen);
    940 
    941 	if (len - sizeof(*hdr) < datalen) {
    942 		wpa_printf(MSG_INFO, "   frame too short for this IEEE 802.1X packet");
    943 		if (sta->eapol_sm)
    944 			sta->eapol_sm->dot1xAuthEapLengthErrorFramesRx++;
    945 		return;
    946 	}
    947 	if (len - sizeof(*hdr) > datalen) {
    948 		wpa_printf(MSG_DEBUG, "   ignoring %lu extra octets after "
    949 			   "IEEE 802.1X packet",
    950 			   (unsigned long) len - sizeof(*hdr) - datalen);
    951 	}
    952 
    953 	if (sta->eapol_sm) {
    954 		sta->eapol_sm->dot1xAuthLastEapolFrameVersion = hdr->version;
    955 		sta->eapol_sm->dot1xAuthEapolFramesRx++;
    956 	}
    957 
    958 	key = (struct ieee802_1x_eapol_key *) (hdr + 1);
    959 	if (datalen >= sizeof(struct ieee802_1x_eapol_key) &&
    960 	    hdr->type == IEEE802_1X_TYPE_EAPOL_KEY &&
    961 	    (key->type == EAPOL_KEY_TYPE_WPA ||
    962 	     key->type == EAPOL_KEY_TYPE_RSN)) {
    963 		wpa_receive(hapd->wpa_auth, sta->wpa_sm, (u8 *) hdr,
    964 			    sizeof(*hdr) + datalen);
    965 		return;
    966 	}
    967 
    968 	if (!hapd->conf->ieee802_1x && !hapd->conf->osen &&
    969 	    !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
    970 		wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
    971 			   "802.1X not enabled and WPS not used");
    972 		return;
    973 	}
    974 
    975 	key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
    976 	if (key_mgmt != -1 && wpa_key_mgmt_wpa_psk(key_mgmt)) {
    977 		wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
    978 			   "STA is using PSK");
    979 		return;
    980 	}
    981 
    982 	if (!sta->eapol_sm) {
    983 		sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
    984 		if (!sta->eapol_sm)
    985 			return;
    986 
    987 #ifdef CONFIG_WPS
    988 		if (!hapd->conf->ieee802_1x && hapd->conf->wps_state) {
    989 			u32 wflags = sta->flags & (WLAN_STA_WPS |
    990 						   WLAN_STA_WPS2 |
    991 						   WLAN_STA_MAYBE_WPS);
    992 			if (wflags == WLAN_STA_MAYBE_WPS ||
    993 			    wflags == (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) {
    994 				/*
    995 				 * Delay EAPOL frame transmission until a
    996 				 * possible WPS STA initiates the handshake
    997 				 * with EAPOL-Start. Only allow the wait to be
    998 				 * skipped if the STA is known to support WPS
    999 				 * 2.0.
   1000 				 */
   1001 				wpa_printf(MSG_DEBUG, "WPS: Do not start "
   1002 					   "EAPOL until EAPOL-Start is "
   1003 					   "received");
   1004 				sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
   1005 			}
   1006 		}
   1007 #endif /* CONFIG_WPS */
   1008 
   1009 		sta->eapol_sm->eap_if->portEnabled = TRUE;
   1010 	}
   1011 
   1012 	/* since we support version 1, we can ignore version field and proceed
   1013 	 * as specified in version 1 standard [IEEE Std 802.1X-2001, 7.5.5] */
   1014 	/* TODO: actually, we are not version 1 anymore.. However, Version 2
   1015 	 * does not change frame contents, so should be ok to process frames
   1016 	 * more or less identically. Some changes might be needed for
   1017 	 * verification of fields. */
   1018 
   1019 	switch (hdr->type) {
   1020 	case IEEE802_1X_TYPE_EAP_PACKET:
   1021 		handle_eap(hapd, sta, (u8 *) (hdr + 1), datalen);
   1022 		break;
   1023 
   1024 	case IEEE802_1X_TYPE_EAPOL_START:
   1025 		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
   1026 			       HOSTAPD_LEVEL_DEBUG, "received EAPOL-Start "
   1027 			       "from STA");
   1028 		sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
   1029 		pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
   1030 		if (pmksa) {
   1031 			hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
   1032 				       HOSTAPD_LEVEL_DEBUG, "cached PMKSA "
   1033 				       "available - ignore it since "
   1034 				       "STA sent EAPOL-Start");
   1035 			wpa_auth_sta_clear_pmksa(sta->wpa_sm, pmksa);
   1036 		}
   1037 		sta->eapol_sm->eapolStart = TRUE;
   1038 		sta->eapol_sm->dot1xAuthEapolStartFramesRx++;
   1039 		eap_server_clear_identity(sta->eapol_sm->eap);
   1040 		wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
   1041 		break;
   1042 
   1043 	case IEEE802_1X_TYPE_EAPOL_LOGOFF:
   1044 		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
   1045 			       HOSTAPD_LEVEL_DEBUG, "received EAPOL-Logoff "
   1046 			       "from STA");
   1047 		sta->acct_terminate_cause =
   1048 			RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
   1049 		accounting_sta_stop(hapd, sta);
   1050 		sta->eapol_sm->eapolLogoff = TRUE;
   1051 		sta->eapol_sm->dot1xAuthEapolLogoffFramesRx++;
   1052 		eap_server_clear_identity(sta->eapol_sm->eap);
   1053 		break;
   1054 
   1055 	case IEEE802_1X_TYPE_EAPOL_KEY:
   1056 		wpa_printf(MSG_DEBUG, "   EAPOL-Key");
   1057 		if (!ap_sta_is_authorized(sta)) {
   1058 			wpa_printf(MSG_DEBUG, "   Dropped key data from "
   1059 				   "unauthorized Supplicant");
   1060 			break;
   1061 		}
   1062 		break;
   1063 
   1064 	case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT:
   1065 		wpa_printf(MSG_DEBUG, "   EAPOL-Encapsulated-ASF-Alert");
   1066 		/* TODO: implement support for this; show data */
   1067 		break;
   1068 
   1069 	default:
   1070 		wpa_printf(MSG_DEBUG, "   unknown IEEE 802.1X packet type");
   1071 		sta->eapol_sm->dot1xAuthInvalidEapolFramesRx++;
   1072 		break;
   1073 	}
   1074 
   1075 	eapol_auth_step(sta->eapol_sm);
   1076 }
   1077 
   1078 
   1079 /**
   1080  * ieee802_1x_new_station - Start IEEE 802.1X authentication
   1081  * @hapd: hostapd BSS data
   1082  * @sta: The station
   1083  *
   1084  * This function is called to start IEEE 802.1X authentication when a new
   1085  * station completes IEEE 802.11 association.
   1086  */
   1087 void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta)
   1088 {
   1089 	struct rsn_pmksa_cache_entry *pmksa;
   1090 	int reassoc = 1;
   1091 	int force_1x = 0;
   1092 	int key_mgmt;
   1093 
   1094 #ifdef CONFIG_WPS
   1095 	if (hapd->conf->wps_state &&
   1096 	    ((hapd->conf->wpa && (sta->flags & WLAN_STA_MAYBE_WPS)) ||
   1097 	     (sta->flags & WLAN_STA_WPS))) {
   1098 		/*
   1099 		 * Need to enable IEEE 802.1X/EAPOL state machines for possible
   1100 		 * WPS handshake even if IEEE 802.1X/EAPOL is not used for
   1101 		 * authentication in this BSS.
   1102 		 */
   1103 		force_1x = 1;
   1104 	}
   1105 #endif /* CONFIG_WPS */
   1106 
   1107 	if (!force_1x && !hapd->conf->ieee802_1x && !hapd->conf->osen) {
   1108 		wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - "
   1109 			   "802.1X not enabled or forced for WPS");
   1110 		/*
   1111 		 * Clear any possible EAPOL authenticator state to support
   1112 		 * reassociation change from WPS to PSK.
   1113 		 */
   1114 		ieee802_1x_free_station(hapd, sta);
   1115 		return;
   1116 	}
   1117 
   1118 	key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
   1119 	if (key_mgmt != -1 && wpa_key_mgmt_wpa_psk(key_mgmt)) {
   1120 		wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - using PSK");
   1121 		/*
   1122 		 * Clear any possible EAPOL authenticator state to support
   1123 		 * reassociation change from WPA-EAP to PSK.
   1124 		 */
   1125 		ieee802_1x_free_station(hapd, sta);
   1126 		return;
   1127 	}
   1128 
   1129 	if (sta->eapol_sm == NULL) {
   1130 		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
   1131 			       HOSTAPD_LEVEL_DEBUG, "start authentication");
   1132 		sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
   1133 		if (sta->eapol_sm == NULL) {
   1134 			hostapd_logger(hapd, sta->addr,
   1135 				       HOSTAPD_MODULE_IEEE8021X,
   1136 				       HOSTAPD_LEVEL_INFO,
   1137 				       "failed to allocate state machine");
   1138 			return;
   1139 		}
   1140 		reassoc = 0;
   1141 	}
   1142 
   1143 #ifdef CONFIG_WPS
   1144 	sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
   1145 	if (!hapd->conf->ieee802_1x && hapd->conf->wps_state &&
   1146 	    !(sta->flags & WLAN_STA_WPS2)) {
   1147 		/*
   1148 		 * Delay EAPOL frame transmission until a possible WPS STA
   1149 		 * initiates the handshake with EAPOL-Start. Only allow the
   1150 		 * wait to be skipped if the STA is known to support WPS 2.0.
   1151 		 */
   1152 		wpa_printf(MSG_DEBUG, "WPS: Do not start EAPOL until "
   1153 			   "EAPOL-Start is received");
   1154 		sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
   1155 	}
   1156 #endif /* CONFIG_WPS */
   1157 
   1158 	sta->eapol_sm->eap_if->portEnabled = TRUE;
   1159 
   1160 #ifdef CONFIG_IEEE80211R_AP
   1161 	if (sta->auth_alg == WLAN_AUTH_FT) {
   1162 		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
   1163 			       HOSTAPD_LEVEL_DEBUG,
   1164 			       "PMK from FT - skip IEEE 802.1X/EAP");
   1165 		/* Setup EAPOL state machines to already authenticated state
   1166 		 * because of existing FT information from R0KH. */
   1167 		sta->eapol_sm->keyRun = TRUE;
   1168 		sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
   1169 		sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
   1170 		sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
   1171 		sta->eapol_sm->authSuccess = TRUE;
   1172 		sta->eapol_sm->authFail = FALSE;
   1173 		sta->eapol_sm->portValid = TRUE;
   1174 		if (sta->eapol_sm->eap)
   1175 			eap_sm_notify_cached(sta->eapol_sm->eap);
   1176 		/* TODO: get vlan_id from R0KH using RRB message */
   1177 		return;
   1178 	}
   1179 #endif /* CONFIG_IEEE80211R_AP */
   1180 
   1181 #ifdef CONFIG_FILS
   1182 	if (sta->auth_alg == WLAN_AUTH_FILS_SK ||
   1183 	    sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
   1184 	    sta->auth_alg == WLAN_AUTH_FILS_PK) {
   1185 		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
   1186 			       HOSTAPD_LEVEL_DEBUG,
   1187 			       "PMK from FILS - skip IEEE 802.1X/EAP");
   1188 		/* Setup EAPOL state machines to already authenticated state
   1189 		 * because of existing FILS information. */
   1190 		sta->eapol_sm->keyRun = TRUE;
   1191 		sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
   1192 		sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
   1193 		sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
   1194 		sta->eapol_sm->authSuccess = TRUE;
   1195 		sta->eapol_sm->authFail = FALSE;
   1196 		sta->eapol_sm->portValid = TRUE;
   1197 		if (sta->eapol_sm->eap)
   1198 			eap_sm_notify_cached(sta->eapol_sm->eap);
   1199 		return;
   1200 	}
   1201 #endif /* CONFIG_FILS */
   1202 
   1203 	pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
   1204 	if (pmksa) {
   1205 		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
   1206 			       HOSTAPD_LEVEL_DEBUG,
   1207 			       "PMK from PMKSA cache - skip IEEE 802.1X/EAP");
   1208 		/* Setup EAPOL state machines to already authenticated state
   1209 		 * because of existing PMKSA information in the cache. */
   1210 		sta->eapol_sm->keyRun = TRUE;
   1211 		sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
   1212 		sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
   1213 		sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
   1214 		sta->eapol_sm->authSuccess = TRUE;
   1215 		sta->eapol_sm->authFail = FALSE;
   1216 		if (sta->eapol_sm->eap)
   1217 			eap_sm_notify_cached(sta->eapol_sm->eap);
   1218 		pmksa_cache_to_eapol_data(hapd, pmksa, sta->eapol_sm);
   1219 		ap_sta_bind_vlan(hapd, sta);
   1220 	} else {
   1221 		if (reassoc) {
   1222 			/*
   1223 			 * Force EAPOL state machines to start
   1224 			 * re-authentication without having to wait for the
   1225 			 * Supplicant to send EAPOL-Start.
   1226 			 */
   1227 			sta->eapol_sm->reAuthenticate = TRUE;
   1228 		}
   1229 		eapol_auth_step(sta->eapol_sm);
   1230 	}
   1231 }
   1232 
   1233 
   1234 void ieee802_1x_free_station(struct hostapd_data *hapd, struct sta_info *sta)
   1235 {
   1236 	struct eapol_state_machine *sm = sta->eapol_sm;
   1237 
   1238 #ifdef CONFIG_HS20
   1239 	eloop_cancel_timeout(ieee802_1x_wnm_notif_send, hapd, sta);
   1240 #endif /* CONFIG_HS20 */
   1241 
   1242 	if (sta->pending_eapol_rx) {
   1243 		wpabuf_free(sta->pending_eapol_rx->buf);
   1244 		os_free(sta->pending_eapol_rx);
   1245 		sta->pending_eapol_rx = NULL;
   1246 	}
   1247 
   1248 	if (sm == NULL)
   1249 		return;
   1250 
   1251 	sta->eapol_sm = NULL;
   1252 
   1253 #ifndef CONFIG_NO_RADIUS
   1254 	radius_msg_free(sm->last_recv_radius);
   1255 	radius_free_class(&sm->radius_class);
   1256 #endif /* CONFIG_NO_RADIUS */
   1257 
   1258 	eapol_auth_free(sm);
   1259 }
   1260 
   1261 
   1262 #ifndef CONFIG_NO_RADIUS
   1263 static void ieee802_1x_decapsulate_radius(struct hostapd_data *hapd,
   1264 					  struct sta_info *sta)
   1265 {
   1266 	struct wpabuf *eap;
   1267 	const struct eap_hdr *hdr;
   1268 	int eap_type = -1;
   1269 	char buf[64];
   1270 	struct radius_msg *msg;
   1271 	struct eapol_state_machine *sm = sta->eapol_sm;
   1272 
   1273 	if (sm == NULL || sm->last_recv_radius == NULL) {
   1274 		if (sm)
   1275 			sm->eap_if->aaaEapNoReq = TRUE;
   1276 		return;
   1277 	}
   1278 
   1279 	msg = sm->last_recv_radius;
   1280 
   1281 	eap = radius_msg_get_eap(msg);
   1282 	if (eap == NULL) {
   1283 		/* RFC 3579, Chap. 2.6.3:
   1284 		 * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
   1285 		 * attribute */
   1286 		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
   1287 			       HOSTAPD_LEVEL_WARNING, "could not extract "
   1288 			       "EAP-Message from RADIUS message");
   1289 		sm->eap_if->aaaEapNoReq = TRUE;
   1290 		return;
   1291 	}
   1292 
   1293 	if (wpabuf_len(eap) < sizeof(*hdr)) {
   1294 		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
   1295 			       HOSTAPD_LEVEL_WARNING, "too short EAP packet "
   1296 			       "received from authentication server");
   1297 		wpabuf_free(eap);
   1298 		sm->eap_if->aaaEapNoReq = TRUE;
   1299 		return;
   1300 	}
   1301 
   1302 	if (wpabuf_len(eap) > sizeof(*hdr))
   1303 		eap_type = (wpabuf_head_u8(eap))[sizeof(*hdr)];
   1304 
   1305 	hdr = wpabuf_head(eap);
   1306 	switch (hdr->code) {
   1307 	case EAP_CODE_REQUEST:
   1308 		if (eap_type >= 0)
   1309 			sm->eap_type_authsrv = eap_type;
   1310 		os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
   1311 			    eap_server_get_name(0, eap_type), eap_type);
   1312 		break;
   1313 	case EAP_CODE_RESPONSE:
   1314 		os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
   1315 			    eap_server_get_name(0, eap_type), eap_type);
   1316 		break;
   1317 	case EAP_CODE_SUCCESS:
   1318 		os_strlcpy(buf, "EAP Success", sizeof(buf));
   1319 		break;
   1320 	case EAP_CODE_FAILURE:
   1321 		os_strlcpy(buf, "EAP Failure", sizeof(buf));
   1322 		break;
   1323 	default:
   1324 		os_strlcpy(buf, "unknown EAP code", sizeof(buf));
   1325 		break;
   1326 	}
   1327 	buf[sizeof(buf) - 1] = '\0';
   1328 	hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
   1329 		       HOSTAPD_LEVEL_DEBUG, "decapsulated EAP packet (code=%d "
   1330 		       "id=%d len=%d) from RADIUS server: %s",
   1331 		       hdr->code, hdr->identifier, be_to_host16(hdr->length),
   1332 		       buf);
   1333 	sm->eap_if->aaaEapReq = TRUE;
   1334 
   1335 	wpabuf_free(sm->eap_if->aaaEapReqData);
   1336 	sm->eap_if->aaaEapReqData = eap;
   1337 }
   1338 
   1339 
   1340 static void ieee802_1x_get_keys(struct hostapd_data *hapd,
   1341 				struct sta_info *sta, struct radius_msg *msg,
   1342 				struct radius_msg *req,
   1343 				const u8 *shared_secret,
   1344 				size_t shared_secret_len)
   1345 {
   1346 	struct radius_ms_mppe_keys *keys;
   1347 	struct eapol_state_machine *sm = sta->eapol_sm;
   1348 	if (sm == NULL)
   1349 		return;
   1350 
   1351 	keys = radius_msg_get_ms_keys(msg, req, shared_secret,
   1352 				      shared_secret_len);
   1353 
   1354 	if (keys && keys->send && keys->recv) {
   1355 		size_t len = keys->send_len + keys->recv_len;
   1356 		wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Send-Key",
   1357 				keys->send, keys->send_len);
   1358 		wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Recv-Key",
   1359 				keys->recv, keys->recv_len);
   1360 
   1361 		os_free(sm->eap_if->aaaEapKeyData);
   1362 		sm->eap_if->aaaEapKeyData = os_malloc(len);
   1363 		if (sm->eap_if->aaaEapKeyData) {
   1364 			os_memcpy(sm->eap_if->aaaEapKeyData, keys->recv,
   1365 				  keys->recv_len);
   1366 			os_memcpy(sm->eap_if->aaaEapKeyData + keys->recv_len,
   1367 				  keys->send, keys->send_len);
   1368 			sm->eap_if->aaaEapKeyDataLen = len;
   1369 			sm->eap_if->aaaEapKeyAvailable = TRUE;
   1370 		}
   1371 	} else {
   1372 		wpa_printf(MSG_DEBUG,
   1373 			   "MS-MPPE: 1x_get_keys, could not get keys: %p  send: %p  recv: %p",
   1374 			   keys, keys ? keys->send : NULL,
   1375 			   keys ? keys->recv : NULL);
   1376 	}
   1377 
   1378 	if (keys) {
   1379 		os_free(keys->send);
   1380 		os_free(keys->recv);
   1381 		os_free(keys);
   1382 	}
   1383 }
   1384 
   1385 
   1386 static void ieee802_1x_store_radius_class(struct hostapd_data *hapd,
   1387 					  struct sta_info *sta,
   1388 					  struct radius_msg *msg)
   1389 {
   1390 	u8 *attr_class;
   1391 	size_t class_len;
   1392 	struct eapol_state_machine *sm = sta->eapol_sm;
   1393 	int count, i;
   1394 	struct radius_attr_data *nclass;
   1395 	size_t nclass_count;
   1396 
   1397 	if (!hapd->conf->radius->acct_server || hapd->radius == NULL ||
   1398 	    sm == NULL)
   1399 		return;
   1400 
   1401 	radius_free_class(&sm->radius_class);
   1402 	count = radius_msg_count_attr(msg, RADIUS_ATTR_CLASS, 1);
   1403 	if (count <= 0)
   1404 		return;
   1405 
   1406 	nclass = os_calloc(count, sizeof(struct radius_attr_data));
   1407 	if (nclass == NULL)
   1408 		return;
   1409 
   1410 	nclass_count = 0;
   1411 
   1412 	attr_class = NULL;
   1413 	for (i = 0; i < count; i++) {
   1414 		do {
   1415 			if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CLASS,
   1416 						    &attr_class, &class_len,
   1417 						    attr_class) < 0) {
   1418 				i = count;
   1419 				break;
   1420 			}
   1421 		} while (class_len < 1);
   1422 
   1423 		nclass[nclass_count].data = os_malloc(class_len);
   1424 		if (nclass[nclass_count].data == NULL)
   1425 			break;
   1426 
   1427 		os_memcpy(nclass[nclass_count].data, attr_class, class_len);
   1428 		nclass[nclass_count].len = class_len;
   1429 		nclass_count++;
   1430 	}
   1431 
   1432 	sm->radius_class.attr = nclass;
   1433 	sm->radius_class.count = nclass_count;
   1434 	wpa_printf(MSG_DEBUG, "IEEE 802.1X: Stored %lu RADIUS Class "
   1435 		   "attributes for " MACSTR,
   1436 		   (unsigned long) sm->radius_class.count,
   1437 		   MAC2STR(sta->addr));
   1438 }
   1439 
   1440 
   1441 /* Update sta->identity based on User-Name attribute in Access-Accept */
   1442 static void ieee802_1x_update_sta_identity(struct hostapd_data *hapd,
   1443 					   struct sta_info *sta,
   1444 					   struct radius_msg *msg)
   1445 {
   1446 	u8 *buf, *identity;
   1447 	size_t len;
   1448 	struct eapol_state_machine *sm = sta->eapol_sm;
   1449 
   1450 	if (sm == NULL)
   1451 		return;
   1452 
   1453 	if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &buf, &len,
   1454 				    NULL) < 0)
   1455 		return;
   1456 
   1457 	identity = (u8 *) dup_binstr(buf, len);
   1458 	if (identity == NULL)
   1459 		return;
   1460 
   1461 	hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
   1462 		       HOSTAPD_LEVEL_DEBUG, "old identity '%s' updated with "
   1463 		       "User-Name from Access-Accept '%s'",
   1464 		       sm->identity ? (char *) sm->identity : "N/A",
   1465 		       (char *) identity);
   1466 
   1467 	os_free(sm->identity);
   1468 	sm->identity = identity;
   1469 	sm->identity_len = len;
   1470 }
   1471 
   1472 
   1473 /* Update CUI based on Chargeable-User-Identity attribute in Access-Accept */
   1474 static void ieee802_1x_update_sta_cui(struct hostapd_data *hapd,
   1475 				      struct sta_info *sta,
   1476 				      struct radius_msg *msg)
   1477 {
   1478 	struct eapol_state_machine *sm = sta->eapol_sm;
   1479 	struct wpabuf *cui;
   1480 	u8 *buf;
   1481 	size_t len;
   1482 
   1483 	if (sm == NULL)
   1484 		return;
   1485 
   1486 	if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
   1487 				    &buf, &len, NULL) < 0)
   1488 		return;
   1489 
   1490 	cui = wpabuf_alloc_copy(buf, len);
   1491 	if (cui == NULL)
   1492 		return;
   1493 
   1494 	wpabuf_free(sm->radius_cui);
   1495 	sm->radius_cui = cui;
   1496 }
   1497 
   1498 
   1499 #ifdef CONFIG_HS20
   1500 
   1501 static void ieee802_1x_hs20_sub_rem(struct sta_info *sta, u8 *pos, size_t len)
   1502 {
   1503 	sta->remediation = 1;
   1504 	os_free(sta->remediation_url);
   1505 	if (len > 2) {
   1506 		sta->remediation_url = os_malloc(len);
   1507 		if (!sta->remediation_url)
   1508 			return;
   1509 		sta->remediation_method = pos[0];
   1510 		os_memcpy(sta->remediation_url, pos + 1, len - 1);
   1511 		sta->remediation_url[len - 1] = '\0';
   1512 		wpa_printf(MSG_DEBUG, "HS 2.0: Subscription remediation needed "
   1513 			   "for " MACSTR " - server method %u URL %s",
   1514 			   MAC2STR(sta->addr), sta->remediation_method,
   1515 			   sta->remediation_url);
   1516 	} else {
   1517 		sta->remediation_url = NULL;
   1518 		wpa_printf(MSG_DEBUG, "HS 2.0: Subscription remediation needed "
   1519 			   "for " MACSTR, MAC2STR(sta->addr));
   1520 	}
   1521 	/* TODO: assign the STA into remediation VLAN or add filtering */
   1522 }
   1523 
   1524 
   1525 static void ieee802_1x_hs20_deauth_req(struct hostapd_data *hapd,
   1526 				       struct sta_info *sta, u8 *pos,
   1527 				       size_t len)
   1528 {
   1529 	if (len < 3)
   1530 		return; /* Malformed information */
   1531 	sta->hs20_deauth_requested = 1;
   1532 	wpa_printf(MSG_DEBUG, "HS 2.0: Deauthentication request - Code %u  "
   1533 		   "Re-auth Delay %u",
   1534 		   *pos, WPA_GET_LE16(pos + 1));
   1535 	wpabuf_free(sta->hs20_deauth_req);
   1536 	sta->hs20_deauth_req = wpabuf_alloc(len + 1);
   1537 	if (sta->hs20_deauth_req) {
   1538 		wpabuf_put_data(sta->hs20_deauth_req, pos, 3);
   1539 		wpabuf_put_u8(sta->hs20_deauth_req, len - 3);
   1540 		wpabuf_put_data(sta->hs20_deauth_req, pos + 3, len - 3);
   1541 	}
   1542 	ap_sta_session_timeout(hapd, sta, hapd->conf->hs20_deauth_req_timeout);
   1543 }
   1544 
   1545 
   1546 static void ieee802_1x_hs20_session_info(struct hostapd_data *hapd,
   1547 					 struct sta_info *sta, u8 *pos,
   1548 					 size_t len, int session_timeout)
   1549 {
   1550 	unsigned int swt;
   1551 	int warning_time, beacon_int;
   1552 
   1553 	if (len < 1)
   1554 		return; /* Malformed information */
   1555 	os_free(sta->hs20_session_info_url);
   1556 	sta->hs20_session_info_url = os_malloc(len);
   1557 	if (sta->hs20_session_info_url == NULL)
   1558 		return;
   1559 	swt = pos[0];
   1560 	os_memcpy(sta->hs20_session_info_url, pos + 1, len - 1);
   1561 	sta->hs20_session_info_url[len - 1] = '\0';
   1562 	wpa_printf(MSG_DEBUG, "HS 2.0: Session Information URL='%s' SWT=%u "
   1563 		   "(session_timeout=%d)",
   1564 		   sta->hs20_session_info_url, swt, session_timeout);
   1565 	if (session_timeout < 0) {
   1566 		wpa_printf(MSG_DEBUG, "HS 2.0: No Session-Timeout set - ignore session info URL");
   1567 		return;
   1568 	}
   1569 	if (swt == 255)
   1570 		swt = 1; /* Use one minute as the AP selected value */
   1571 
   1572 	if ((unsigned int) session_timeout < swt * 60)
   1573 		warning_time = 0;
   1574 	else
   1575 		warning_time = session_timeout - swt * 60;
   1576 
   1577 	beacon_int = hapd->iconf->beacon_int;
   1578 	if (beacon_int < 1)
   1579 		beacon_int = 100; /* best guess */
   1580 	sta->hs20_disassoc_timer = swt * 60 * 1000 / beacon_int * 125 / 128;
   1581 	if (sta->hs20_disassoc_timer > 65535)
   1582 		sta->hs20_disassoc_timer = 65535;
   1583 
   1584 	ap_sta_session_warning_timeout(hapd, sta, warning_time);
   1585 }
   1586 
   1587 #endif /* CONFIG_HS20 */
   1588 
   1589 
   1590 static void ieee802_1x_check_hs20(struct hostapd_data *hapd,
   1591 				  struct sta_info *sta,
   1592 				  struct radius_msg *msg,
   1593 				  int session_timeout)
   1594 {
   1595 #ifdef CONFIG_HS20
   1596 	u8 *buf, *pos, *end, type, sublen;
   1597 	size_t len;
   1598 
   1599 	buf = NULL;
   1600 	sta->remediation = 0;
   1601 	sta->hs20_deauth_requested = 0;
   1602 
   1603 	for (;;) {
   1604 		if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_VENDOR_SPECIFIC,
   1605 					    &buf, &len, buf) < 0)
   1606 			break;
   1607 		if (len < 6)
   1608 			continue;
   1609 		pos = buf;
   1610 		end = buf + len;
   1611 		if (WPA_GET_BE32(pos) != RADIUS_VENDOR_ID_WFA)
   1612 			continue;
   1613 		pos += 4;
   1614 
   1615 		type = *pos++;
   1616 		sublen = *pos++;
   1617 		if (sublen < 2)
   1618 			continue; /* invalid length */
   1619 		sublen -= 2; /* skip header */
   1620 		if (pos + sublen > end)
   1621 			continue; /* invalid WFA VSA */
   1622 
   1623 		switch (type) {
   1624 		case RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION:
   1625 			ieee802_1x_hs20_sub_rem(sta, pos, sublen);
   1626 			break;
   1627 		case RADIUS_VENDOR_ATTR_WFA_HS20_DEAUTH_REQ:
   1628 			ieee802_1x_hs20_deauth_req(hapd, sta, pos, sublen);
   1629 			break;
   1630 		case RADIUS_VENDOR_ATTR_WFA_HS20_SESSION_INFO_URL:
   1631 			ieee802_1x_hs20_session_info(hapd, sta, pos, sublen,
   1632 						     session_timeout);
   1633 			break;
   1634 		}
   1635 	}
   1636 #endif /* CONFIG_HS20 */
   1637 }
   1638 
   1639 
   1640 struct sta_id_search {
   1641 	u8 identifier;
   1642 	struct eapol_state_machine *sm;
   1643 };
   1644 
   1645 
   1646 static int ieee802_1x_select_radius_identifier(struct hostapd_data *hapd,
   1647 					       struct sta_info *sta,
   1648 					       void *ctx)
   1649 {
   1650 	struct sta_id_search *id_search = ctx;
   1651 	struct eapol_state_machine *sm = sta->eapol_sm;
   1652 
   1653 	if (sm && sm->radius_identifier >= 0 &&
   1654 	    sm->radius_identifier == id_search->identifier) {
   1655 		id_search->sm = sm;
   1656 		return 1;
   1657 	}
   1658 	return 0;
   1659 }
   1660 
   1661 
   1662 static struct eapol_state_machine *
   1663 ieee802_1x_search_radius_identifier(struct hostapd_data *hapd, u8 identifier)
   1664 {
   1665 	struct sta_id_search id_search;
   1666 	id_search.identifier = identifier;
   1667 	id_search.sm = NULL;
   1668 	ap_for_each_sta(hapd, ieee802_1x_select_radius_identifier, &id_search);
   1669 	return id_search.sm;
   1670 }
   1671 
   1672 
   1673 /**
   1674  * ieee802_1x_receive_auth - Process RADIUS frames from Authentication Server
   1675  * @msg: RADIUS response message
   1676  * @req: RADIUS request message
   1677  * @shared_secret: RADIUS shared secret
   1678  * @shared_secret_len: Length of shared_secret in octets
   1679  * @data: Context data (struct hostapd_data *)
   1680  * Returns: Processing status
   1681  */
   1682 static RadiusRxResult
   1683 ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
   1684 			const u8 *shared_secret, size_t shared_secret_len,
   1685 			void *data)
   1686 {
   1687 	struct hostapd_data *hapd = data;
   1688 	struct sta_info *sta;
   1689 	u32 session_timeout = 0, termination_action, acct_interim_interval;
   1690 	int session_timeout_set;
   1691 	struct eapol_state_machine *sm;
   1692 	int override_eapReq = 0;
   1693 	struct radius_hdr *hdr = radius_msg_get_hdr(msg);
   1694 	struct vlan_description vlan_desc;
   1695 #ifndef CONFIG_NO_VLAN
   1696 	int *untagged, *tagged, *notempty;
   1697 #endif /* CONFIG_NO_VLAN */
   1698 
   1699 	os_memset(&vlan_desc, 0, sizeof(vlan_desc));
   1700 
   1701 	sm = ieee802_1x_search_radius_identifier(hapd, hdr->identifier);
   1702 	if (sm == NULL) {
   1703 		wpa_printf(MSG_DEBUG, "IEEE 802.1X: Could not find matching "
   1704 			   "station for this RADIUS message");
   1705 		return RADIUS_RX_UNKNOWN;
   1706 	}
   1707 	sta = sm->sta;
   1708 
   1709 	/* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
   1710 	 * present when packet contains an EAP-Message attribute */
   1711 	if (hdr->code == RADIUS_CODE_ACCESS_REJECT &&
   1712 	    radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
   1713 				0) < 0 &&
   1714 	    radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
   1715 		wpa_printf(MSG_DEBUG, "Allowing RADIUS Access-Reject without "
   1716 			   "Message-Authenticator since it does not include "
   1717 			   "EAP-Message");
   1718 	} else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
   1719 				     req, 1)) {
   1720 		wpa_printf(MSG_INFO, "Incoming RADIUS packet did not have correct Message-Authenticator - dropped");
   1721 		return RADIUS_RX_INVALID_AUTHENTICATOR;
   1722 	}
   1723 
   1724 	if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
   1725 	    hdr->code != RADIUS_CODE_ACCESS_REJECT &&
   1726 	    hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
   1727 		wpa_printf(MSG_INFO, "Unknown RADIUS message code");
   1728 		return RADIUS_RX_UNKNOWN;
   1729 	}
   1730 
   1731 	sm->radius_identifier = -1;
   1732 	wpa_printf(MSG_DEBUG, "RADIUS packet matching with station " MACSTR,
   1733 		   MAC2STR(sta->addr));
   1734 
   1735 	radius_msg_free(sm->last_recv_radius);
   1736 	sm->last_recv_radius = msg;
   1737 
   1738 	session_timeout_set =
   1739 		!radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
   1740 					   &session_timeout);
   1741 	if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_TERMINATION_ACTION,
   1742 				      &termination_action))
   1743 		termination_action = RADIUS_TERMINATION_ACTION_DEFAULT;
   1744 
   1745 	if (hapd->conf->acct_interim_interval == 0 &&
   1746 	    hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
   1747 	    radius_msg_get_attr_int32(msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
   1748 				      &acct_interim_interval) == 0) {
   1749 		if (acct_interim_interval < 60) {
   1750 			hostapd_logger(hapd, sta->addr,
   1751 				       HOSTAPD_MODULE_IEEE8021X,
   1752 				       HOSTAPD_LEVEL_INFO,
   1753 				       "ignored too small "
   1754 				       "Acct-Interim-Interval %d",
   1755 				       acct_interim_interval);
   1756 		} else
   1757 			sta->acct_interim_interval = acct_interim_interval;
   1758 	}
   1759 
   1760 
   1761 	switch (hdr->code) {
   1762 	case RADIUS_CODE_ACCESS_ACCEPT:
   1763 #ifndef CONFIG_NO_VLAN
   1764 		if (hapd->conf->ssid.dynamic_vlan != DYNAMIC_VLAN_DISABLED) {
   1765 			notempty = &vlan_desc.notempty;
   1766 			untagged = &vlan_desc.untagged;
   1767 			tagged = vlan_desc.tagged;
   1768 			*notempty = !!radius_msg_get_vlanid(msg, untagged,
   1769 							    MAX_NUM_TAGGED_VLAN,
   1770 							    tagged);
   1771 		}
   1772 
   1773 		if (vlan_desc.notempty &&
   1774 		    !hostapd_vlan_valid(hapd->conf->vlan, &vlan_desc)) {
   1775 			sta->eapol_sm->authFail = TRUE;
   1776 			hostapd_logger(hapd, sta->addr,
   1777 				       HOSTAPD_MODULE_RADIUS,
   1778 				       HOSTAPD_LEVEL_INFO,
   1779 				       "Invalid VLAN %d%s received from RADIUS server",
   1780 				       vlan_desc.untagged,
   1781 				       vlan_desc.tagged[0] ? "+" : "");
   1782 			os_memset(&vlan_desc, 0, sizeof(vlan_desc));
   1783 			ap_sta_set_vlan(hapd, sta, &vlan_desc);
   1784 			break;
   1785 		}
   1786 
   1787 		if (hapd->conf->ssid.dynamic_vlan == DYNAMIC_VLAN_REQUIRED &&
   1788 		    !vlan_desc.notempty) {
   1789 			sta->eapol_sm->authFail = TRUE;
   1790 			hostapd_logger(hapd, sta->addr,
   1791 				       HOSTAPD_MODULE_IEEE8021X,
   1792 				       HOSTAPD_LEVEL_INFO, "authentication "
   1793 				       "server did not include required VLAN "
   1794 				       "ID in Access-Accept");
   1795 			break;
   1796 		}
   1797 #endif /* CONFIG_NO_VLAN */
   1798 
   1799 		if (ap_sta_set_vlan(hapd, sta, &vlan_desc) < 0)
   1800 			break;
   1801 
   1802 #ifndef CONFIG_NO_VLAN
   1803 		if (sta->vlan_id > 0) {
   1804 			hostapd_logger(hapd, sta->addr,
   1805 				       HOSTAPD_MODULE_RADIUS,
   1806 				       HOSTAPD_LEVEL_INFO,
   1807 				       "VLAN ID %d", sta->vlan_id);
   1808 		}
   1809 #endif /* CONFIG_NO_VLAN */
   1810 
   1811 		if ((sta->flags & WLAN_STA_ASSOC) &&
   1812 		    ap_sta_bind_vlan(hapd, sta) < 0)
   1813 			break;
   1814 
   1815 		sta->session_timeout_set = !!session_timeout_set;
   1816 		sta->session_timeout = session_timeout;
   1817 
   1818 		/* RFC 3580, Ch. 3.17 */
   1819 		if (session_timeout_set && termination_action ==
   1820 		    RADIUS_TERMINATION_ACTION_RADIUS_REQUEST) {
   1821 			sm->reAuthPeriod = session_timeout;
   1822 		} else if (session_timeout_set)
   1823 			ap_sta_session_timeout(hapd, sta, session_timeout);
   1824 
   1825 		sm->eap_if->aaaSuccess = TRUE;
   1826 		override_eapReq = 1;
   1827 		ieee802_1x_get_keys(hapd, sta, msg, req, shared_secret,
   1828 				    shared_secret_len);
   1829 		ieee802_1x_store_radius_class(hapd, sta, msg);
   1830 		ieee802_1x_update_sta_identity(hapd, sta, msg);
   1831 		ieee802_1x_update_sta_cui(hapd, sta, msg);
   1832 		ieee802_1x_check_hs20(hapd, sta, msg,
   1833 				      session_timeout_set ?
   1834 				      (int) session_timeout : -1);
   1835 		break;
   1836 	case RADIUS_CODE_ACCESS_REJECT:
   1837 		sm->eap_if->aaaFail = TRUE;
   1838 		override_eapReq = 1;
   1839 		break;
   1840 	case RADIUS_CODE_ACCESS_CHALLENGE:
   1841 		sm->eap_if->aaaEapReq = TRUE;
   1842 		if (session_timeout_set) {
   1843 			/* RFC 2869, Ch. 2.3.2; RFC 3580, Ch. 3.17 */
   1844 			sm->eap_if->aaaMethodTimeout = session_timeout;
   1845 			hostapd_logger(hapd, sm->addr,
   1846 				       HOSTAPD_MODULE_IEEE8021X,
   1847 				       HOSTAPD_LEVEL_DEBUG,
   1848 				       "using EAP timeout of %d seconds (from "
   1849 				       "RADIUS)",
   1850 				       sm->eap_if->aaaMethodTimeout);
   1851 		} else {
   1852 			/*
   1853 			 * Use dynamic retransmission behavior per EAP
   1854 			 * specification.
   1855 			 */
   1856 			sm->eap_if->aaaMethodTimeout = 0;
   1857 		}
   1858 		break;
   1859 	}
   1860 
   1861 	ieee802_1x_decapsulate_radius(hapd, sta);
   1862 	if (override_eapReq)
   1863 		sm->eap_if->aaaEapReq = FALSE;
   1864 
   1865 #ifdef CONFIG_FILS
   1866 #ifdef NEED_AP_MLME
   1867 	if (sta->flags & WLAN_STA_PENDING_FILS_ERP) {
   1868 		/* TODO: Add a PMKSA entry on success? */
   1869 		ieee802_11_finish_fils_auth(
   1870 			hapd, sta, hdr->code == RADIUS_CODE_ACCESS_ACCEPT,
   1871 			sm->eap_if->aaaEapReqData,
   1872 			sm->eap_if->aaaEapKeyData,
   1873 			sm->eap_if->aaaEapKeyDataLen);
   1874 	}
   1875 #endif /* NEED_AP_MLME */
   1876 #endif /* CONFIG_FILS */
   1877 
   1878 	eapol_auth_step(sm);
   1879 
   1880 	return RADIUS_RX_QUEUED;
   1881 }
   1882 #endif /* CONFIG_NO_RADIUS */
   1883 
   1884 
   1885 void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta)
   1886 {
   1887 	struct eapol_state_machine *sm = sta->eapol_sm;
   1888 	if (sm == NULL)
   1889 		return;
   1890 
   1891 	hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
   1892 		       HOSTAPD_LEVEL_DEBUG, "aborting authentication");
   1893 
   1894 #ifndef CONFIG_NO_RADIUS
   1895 	radius_msg_free(sm->last_recv_radius);
   1896 	sm->last_recv_radius = NULL;
   1897 #endif /* CONFIG_NO_RADIUS */
   1898 
   1899 	if (sm->eap_if->eapTimeout) {
   1900 		/*
   1901 		 * Disconnect the STA since it did not reply to the last EAP
   1902 		 * request and we cannot continue EAP processing (EAP-Failure
   1903 		 * could only be sent if the EAP peer actually replied).
   1904 		 */
   1905 		wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "EAP Timeout, STA " MACSTR,
   1906 			MAC2STR(sta->addr));
   1907 
   1908 		sm->eap_if->portEnabled = FALSE;
   1909 		ap_sta_disconnect(hapd, sta, sta->addr,
   1910 				  WLAN_REASON_PREV_AUTH_NOT_VALID);
   1911 	}
   1912 }
   1913 
   1914 
   1915 static int ieee802_1x_rekey_broadcast(struct hostapd_data *hapd)
   1916 {
   1917 	struct eapol_authenticator *eapol = hapd->eapol_auth;
   1918 
   1919 	if (hapd->conf->default_wep_key_len < 1)
   1920 		return 0;
   1921 
   1922 	os_free(eapol->default_wep_key);
   1923 	eapol->default_wep_key = os_malloc(hapd->conf->default_wep_key_len);
   1924 	if (eapol->default_wep_key == NULL ||
   1925 	    random_get_bytes(eapol->default_wep_key,
   1926 			     hapd->conf->default_wep_key_len)) {
   1927 		wpa_printf(MSG_INFO, "Could not generate random WEP key");
   1928 		os_free(eapol->default_wep_key);
   1929 		eapol->default_wep_key = NULL;
   1930 		return -1;
   1931 	}
   1932 
   1933 	wpa_hexdump_key(MSG_DEBUG, "IEEE 802.1X: New default WEP key",
   1934 			eapol->default_wep_key,
   1935 			hapd->conf->default_wep_key_len);
   1936 
   1937 	return 0;
   1938 }
   1939 
   1940 
   1941 static int ieee802_1x_sta_key_available(struct hostapd_data *hapd,
   1942 					struct sta_info *sta, void *ctx)
   1943 {
   1944 	if (sta->eapol_sm) {
   1945 		sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
   1946 		eapol_auth_step(sta->eapol_sm);
   1947 	}
   1948 	return 0;
   1949 }
   1950 
   1951 
   1952 static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx)
   1953 {
   1954 	struct hostapd_data *hapd = eloop_ctx;
   1955 	struct eapol_authenticator *eapol = hapd->eapol_auth;
   1956 
   1957 	if (eapol->default_wep_key_idx >= 3)
   1958 		eapol->default_wep_key_idx =
   1959 			hapd->conf->individual_wep_key_len > 0 ? 1 : 0;
   1960 	else
   1961 		eapol->default_wep_key_idx++;
   1962 
   1963 	wpa_printf(MSG_DEBUG, "IEEE 802.1X: New default WEP key index %d",
   1964 		   eapol->default_wep_key_idx);
   1965 
   1966 	if (ieee802_1x_rekey_broadcast(hapd)) {
   1967 		hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
   1968 			       HOSTAPD_LEVEL_WARNING, "failed to generate a "
   1969 			       "new broadcast key");
   1970 		os_free(eapol->default_wep_key);
   1971 		eapol->default_wep_key = NULL;
   1972 		return;
   1973 	}
   1974 
   1975 	/* TODO: Could setup key for RX here, but change default TX keyid only
   1976 	 * after new broadcast key has been sent to all stations. */
   1977 	if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
   1978 				broadcast_ether_addr,
   1979 				eapol->default_wep_key_idx, 1, NULL, 0,
   1980 				eapol->default_wep_key,
   1981 				hapd->conf->default_wep_key_len)) {
   1982 		hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
   1983 			       HOSTAPD_LEVEL_WARNING, "failed to configure a "
   1984 			       "new broadcast key");
   1985 		os_free(eapol->default_wep_key);
   1986 		eapol->default_wep_key = NULL;
   1987 		return;
   1988 	}
   1989 
   1990 	ap_for_each_sta(hapd, ieee802_1x_sta_key_available, NULL);
   1991 
   1992 	if (hapd->conf->wep_rekeying_period > 0) {
   1993 		eloop_register_timeout(hapd->conf->wep_rekeying_period, 0,
   1994 				       ieee802_1x_rekey, hapd, NULL);
   1995 	}
   1996 }
   1997 
   1998 
   1999 static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type,
   2000 				  const u8 *data, size_t datalen)
   2001 {
   2002 #ifdef CONFIG_WPS
   2003 	struct sta_info *sta = sta_ctx;
   2004 
   2005 	if ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) ==
   2006 	    WLAN_STA_MAYBE_WPS) {
   2007 		const u8 *identity;
   2008 		size_t identity_len;
   2009 		struct eapol_state_machine *sm = sta->eapol_sm;
   2010 
   2011 		identity = eap_get_identity(sm->eap, &identity_len);
   2012 		if (identity &&
   2013 		    ((identity_len == WSC_ID_ENROLLEE_LEN &&
   2014 		      os_memcmp(identity, WSC_ID_ENROLLEE,
   2015 				WSC_ID_ENROLLEE_LEN) == 0) ||
   2016 		     (identity_len == WSC_ID_REGISTRAR_LEN &&
   2017 		      os_memcmp(identity, WSC_ID_REGISTRAR,
   2018 				WSC_ID_REGISTRAR_LEN) == 0))) {
   2019 			wpa_printf(MSG_DEBUG, "WPS: WLAN_STA_MAYBE_WPS -> "
   2020 				   "WLAN_STA_WPS");
   2021 			sta->flags |= WLAN_STA_WPS;
   2022 		}
   2023 	}
   2024 #endif /* CONFIG_WPS */
   2025 
   2026 	ieee802_1x_send(ctx, sta_ctx, type, data, datalen);
   2027 }
   2028 
   2029 
   2030 static void ieee802_1x_aaa_send(void *ctx, void *sta_ctx,
   2031 				const u8 *data, size_t datalen)
   2032 {
   2033 #ifndef CONFIG_NO_RADIUS
   2034 	struct hostapd_data *hapd = ctx;
   2035 	struct sta_info *sta = sta_ctx;
   2036 
   2037 	ieee802_1x_encapsulate_radius(hapd, sta, data, datalen);
   2038 #endif /* CONFIG_NO_RADIUS */
   2039 }
   2040 
   2041 
   2042 static void _ieee802_1x_finished(void *ctx, void *sta_ctx, int success,
   2043 				 int preauth, int remediation)
   2044 {
   2045 	struct hostapd_data *hapd = ctx;
   2046 	struct sta_info *sta = sta_ctx;
   2047 	if (preauth)
   2048 		rsn_preauth_finished(hapd, sta, success);
   2049 	else
   2050 		ieee802_1x_finished(hapd, sta, success, remediation);
   2051 }
   2052 
   2053 
   2054 static int ieee802_1x_get_eap_user(void *ctx, const u8 *identity,
   2055 				   size_t identity_len, int phase2,
   2056 				   struct eap_user *user)
   2057 {
   2058 	struct hostapd_data *hapd = ctx;
   2059 	const struct hostapd_eap_user *eap_user;
   2060 	int i;
   2061 	int rv = -1;
   2062 
   2063 	eap_user = hostapd_get_eap_user(hapd, identity, identity_len, phase2);
   2064 	if (eap_user == NULL)
   2065 		goto out;
   2066 
   2067 	os_memset(user, 0, sizeof(*user));
   2068 	user->phase2 = phase2;
   2069 	for (i = 0; i < EAP_MAX_METHODS; i++) {
   2070 		user->methods[i].vendor = eap_user->methods[i].vendor;
   2071 		user->methods[i].method = eap_user->methods[i].method;
   2072 	}
   2073 
   2074 	if (eap_user->password) {
   2075 		user->password = os_malloc(eap_user->password_len);
   2076 		if (user->password == NULL)
   2077 			goto out;
   2078 		os_memcpy(user->password, eap_user->password,
   2079 			  eap_user->password_len);
   2080 		user->password_len = eap_user->password_len;
   2081 		user->password_hash = eap_user->password_hash;
   2082 	}
   2083 	user->force_version = eap_user->force_version;
   2084 	user->macacl = eap_user->macacl;
   2085 	user->ttls_auth = eap_user->ttls_auth;
   2086 	user->remediation = eap_user->remediation;
   2087 	rv = 0;
   2088 
   2089 out:
   2090 	if (rv)
   2091 		wpa_printf(MSG_DEBUG, "%s: Failed to find user", __func__);
   2092 
   2093 	return rv;
   2094 }
   2095 
   2096 
   2097 static int ieee802_1x_sta_entry_alive(void *ctx, const u8 *addr)
   2098 {
   2099 	struct hostapd_data *hapd = ctx;
   2100 	struct sta_info *sta;
   2101 	sta = ap_get_sta(hapd, addr);
   2102 	if (sta == NULL || sta->eapol_sm == NULL)
   2103 		return 0;
   2104 	return 1;
   2105 }
   2106 
   2107 
   2108 static void ieee802_1x_logger(void *ctx, const u8 *addr,
   2109 			      eapol_logger_level level, const char *txt)
   2110 {
   2111 #ifndef CONFIG_NO_HOSTAPD_LOGGER
   2112 	struct hostapd_data *hapd = ctx;
   2113 	int hlevel;
   2114 
   2115 	switch (level) {
   2116 	case EAPOL_LOGGER_WARNING:
   2117 		hlevel = HOSTAPD_LEVEL_WARNING;
   2118 		break;
   2119 	case EAPOL_LOGGER_INFO:
   2120 		hlevel = HOSTAPD_LEVEL_INFO;
   2121 		break;
   2122 	case EAPOL_LOGGER_DEBUG:
   2123 	default:
   2124 		hlevel = HOSTAPD_LEVEL_DEBUG;
   2125 		break;
   2126 	}
   2127 
   2128 	hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE8021X, hlevel, "%s",
   2129 		       txt);
   2130 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
   2131 }
   2132 
   2133 
   2134 static void ieee802_1x_set_port_authorized(void *ctx, void *sta_ctx,
   2135 					   int authorized)
   2136 {
   2137 	struct hostapd_data *hapd = ctx;
   2138 	struct sta_info *sta = sta_ctx;
   2139 	ieee802_1x_set_sta_authorized(hapd, sta, authorized);
   2140 }
   2141 
   2142 
   2143 static void _ieee802_1x_abort_auth(void *ctx, void *sta_ctx)
   2144 {
   2145 	struct hostapd_data *hapd = ctx;
   2146 	struct sta_info *sta = sta_ctx;
   2147 	ieee802_1x_abort_auth(hapd, sta);
   2148 }
   2149 
   2150 
   2151 static void _ieee802_1x_tx_key(void *ctx, void *sta_ctx)
   2152 {
   2153 #ifndef CONFIG_FIPS
   2154 #ifndef CONFIG_NO_RC4
   2155 	struct hostapd_data *hapd = ctx;
   2156 	struct sta_info *sta = sta_ctx;
   2157 	ieee802_1x_tx_key(hapd, sta);
   2158 #endif /* CONFIG_NO_RC4 */
   2159 #endif /* CONFIG_FIPS */
   2160 }
   2161 
   2162 
   2163 static void ieee802_1x_eapol_event(void *ctx, void *sta_ctx,
   2164 				   enum eapol_event type)
   2165 {
   2166 	/* struct hostapd_data *hapd = ctx; */
   2167 	struct sta_info *sta = sta_ctx;
   2168 	switch (type) {
   2169 	case EAPOL_AUTH_SM_CHANGE:
   2170 		wpa_auth_sm_notify(sta->wpa_sm);
   2171 		break;
   2172 	case EAPOL_AUTH_REAUTHENTICATE:
   2173 		wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
   2174 		break;
   2175 	}
   2176 }
   2177 
   2178 
   2179 #ifdef CONFIG_ERP
   2180 
   2181 static struct eap_server_erp_key *
   2182 ieee802_1x_erp_get_key(void *ctx, const char *keyname)
   2183 {
   2184 	struct hostapd_data *hapd = ctx;
   2185 	struct eap_server_erp_key *erp;
   2186 
   2187 	dl_list_for_each(erp, &hapd->erp_keys, struct eap_server_erp_key,
   2188 			 list) {
   2189 		if (os_strcmp(erp->keyname_nai, keyname) == 0)
   2190 			return erp;
   2191 	}
   2192 
   2193 	return NULL;
   2194 }
   2195 
   2196 
   2197 static int ieee802_1x_erp_add_key(void *ctx, struct eap_server_erp_key *erp)
   2198 {
   2199 	struct hostapd_data *hapd = ctx;
   2200 
   2201 	dl_list_add(&hapd->erp_keys, &erp->list);
   2202 	return 0;
   2203 }
   2204 
   2205 #endif /* CONFIG_ERP */
   2206 
   2207 
   2208 int ieee802_1x_init(struct hostapd_data *hapd)
   2209 {
   2210 	int i;
   2211 	struct eapol_auth_config conf;
   2212 	struct eapol_auth_cb cb;
   2213 
   2214 	dl_list_init(&hapd->erp_keys);
   2215 
   2216 	os_memset(&conf, 0, sizeof(conf));
   2217 	conf.ctx = hapd;
   2218 	conf.eap_reauth_period = hapd->conf->eap_reauth_period;
   2219 	conf.wpa = hapd->conf->wpa;
   2220 	conf.individual_wep_key_len = hapd->conf->individual_wep_key_len;
   2221 	conf.eap_server = hapd->conf->eap_server;
   2222 	conf.ssl_ctx = hapd->ssl_ctx;
   2223 	conf.msg_ctx = hapd->msg_ctx;
   2224 	conf.eap_sim_db_priv = hapd->eap_sim_db_priv;
   2225 	conf.eap_req_id_text = hapd->conf->eap_req_id_text;
   2226 	conf.eap_req_id_text_len = hapd->conf->eap_req_id_text_len;
   2227 	conf.erp_send_reauth_start = hapd->conf->erp_send_reauth_start;
   2228 	conf.erp_domain = hapd->conf->erp_domain;
   2229 	conf.erp = hapd->conf->eap_server_erp;
   2230 	conf.tls_session_lifetime = hapd->conf->tls_session_lifetime;
   2231 	conf.pac_opaque_encr_key = hapd->conf->pac_opaque_encr_key;
   2232 	conf.eap_fast_a_id = hapd->conf->eap_fast_a_id;
   2233 	conf.eap_fast_a_id_len = hapd->conf->eap_fast_a_id_len;
   2234 	conf.eap_fast_a_id_info = hapd->conf->eap_fast_a_id_info;
   2235 	conf.eap_fast_prov = hapd->conf->eap_fast_prov;
   2236 	conf.pac_key_lifetime = hapd->conf->pac_key_lifetime;
   2237 	conf.pac_key_refresh_time = hapd->conf->pac_key_refresh_time;
   2238 	conf.eap_sim_aka_result_ind = hapd->conf->eap_sim_aka_result_ind;
   2239 	conf.tnc = hapd->conf->tnc;
   2240 	conf.wps = hapd->wps;
   2241 	conf.fragment_size = hapd->conf->fragment_size;
   2242 	conf.pwd_group = hapd->conf->pwd_group;
   2243 	conf.pbc_in_m1 = hapd->conf->pbc_in_m1;
   2244 	if (hapd->conf->server_id) {
   2245 		conf.server_id = (const u8 *) hapd->conf->server_id;
   2246 		conf.server_id_len = os_strlen(hapd->conf->server_id);
   2247 	} else {
   2248 		conf.server_id = (const u8 *) "hostapd";
   2249 		conf.server_id_len = 7;
   2250 	}
   2251 
   2252 	os_memset(&cb, 0, sizeof(cb));
   2253 	cb.eapol_send = ieee802_1x_eapol_send;
   2254 	cb.aaa_send = ieee802_1x_aaa_send;
   2255 	cb.finished = _ieee802_1x_finished;
   2256 	cb.get_eap_user = ieee802_1x_get_eap_user;
   2257 	cb.sta_entry_alive = ieee802_1x_sta_entry_alive;
   2258 	cb.logger = ieee802_1x_logger;
   2259 	cb.set_port_authorized = ieee802_1x_set_port_authorized;
   2260 	cb.abort_auth = _ieee802_1x_abort_auth;
   2261 	cb.tx_key = _ieee802_1x_tx_key;
   2262 	cb.eapol_event = ieee802_1x_eapol_event;
   2263 #ifdef CONFIG_ERP
   2264 	cb.erp_get_key = ieee802_1x_erp_get_key;
   2265 	cb.erp_add_key = ieee802_1x_erp_add_key;
   2266 #endif /* CONFIG_ERP */
   2267 
   2268 	hapd->eapol_auth = eapol_auth_init(&conf, &cb);
   2269 	if (hapd->eapol_auth == NULL)
   2270 		return -1;
   2271 
   2272 	if ((hapd->conf->ieee802_1x || hapd->conf->wpa) &&
   2273 	    hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1))
   2274 		return -1;
   2275 
   2276 #ifndef CONFIG_NO_RADIUS
   2277 	if (radius_client_register(hapd->radius, RADIUS_AUTH,
   2278 				   ieee802_1x_receive_auth, hapd))
   2279 		return -1;
   2280 #endif /* CONFIG_NO_RADIUS */
   2281 
   2282 	if (hapd->conf->default_wep_key_len) {
   2283 		for (i = 0; i < 4; i++)
   2284 			hostapd_drv_set_key(hapd->conf->iface, hapd,
   2285 					    WPA_ALG_NONE, NULL, i, 0, NULL, 0,
   2286 					    NULL, 0);
   2287 
   2288 		ieee802_1x_rekey(hapd, NULL);
   2289 
   2290 		if (hapd->eapol_auth->default_wep_key == NULL)
   2291 			return -1;
   2292 	}
   2293 
   2294 	return 0;
   2295 }
   2296 
   2297 
   2298 void ieee802_1x_erp_flush(struct hostapd_data *hapd)
   2299 {
   2300 	struct eap_server_erp_key *erp;
   2301 
   2302 	while ((erp = dl_list_first(&hapd->erp_keys, struct eap_server_erp_key,
   2303 				    list)) != NULL) {
   2304 		dl_list_del(&erp->list);
   2305 		bin_clear_free(erp, sizeof(*erp));
   2306 	}
   2307 }
   2308 
   2309 
   2310 void ieee802_1x_deinit(struct hostapd_data *hapd)
   2311 {
   2312 	eloop_cancel_timeout(ieee802_1x_rekey, hapd, NULL);
   2313 
   2314 	if (hapd->driver && hapd->drv_priv &&
   2315 	    (hapd->conf->ieee802_1x || hapd->conf->wpa))
   2316 		hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
   2317 
   2318 	eapol_auth_deinit(hapd->eapol_auth);
   2319 	hapd->eapol_auth = NULL;
   2320 
   2321 	ieee802_1x_erp_flush(hapd);
   2322 }
   2323 
   2324 
   2325 int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
   2326 			 const u8 *buf, size_t len, int ack)
   2327 {
   2328 	struct ieee80211_hdr *hdr;
   2329 	u8 *pos;
   2330 	const unsigned char rfc1042_hdr[ETH_ALEN] =
   2331 		{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
   2332 
   2333 	if (sta == NULL)
   2334 		return -1;
   2335 	if (len < sizeof(*hdr) + sizeof(rfc1042_hdr) + 2)
   2336 		return 0;
   2337 
   2338 	hdr = (struct ieee80211_hdr *) buf;
   2339 	pos = (u8 *) (hdr + 1);
   2340 	if (os_memcmp(pos, rfc1042_hdr, sizeof(rfc1042_hdr)) != 0)
   2341 		return 0;
   2342 	pos += sizeof(rfc1042_hdr);
   2343 	if (WPA_GET_BE16(pos) != ETH_P_PAE)
   2344 		return 0;
   2345 	pos += 2;
   2346 
   2347 	return ieee802_1x_eapol_tx_status(hapd, sta, pos, buf + len - pos,
   2348 					  ack);
   2349 }
   2350 
   2351 
   2352 int ieee802_1x_eapol_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
   2353 			       const u8 *buf, int len, int ack)
   2354 {
   2355 	const struct ieee802_1x_hdr *xhdr =
   2356 		(const struct ieee802_1x_hdr *) buf;
   2357 	const u8 *pos = buf + sizeof(*xhdr);
   2358 	struct ieee802_1x_eapol_key *key;
   2359 
   2360 	if (len < (int) sizeof(*xhdr))
   2361 		return 0;
   2362 	wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR " TX status - version=%d "
   2363 		   "type=%d length=%d - ack=%d",
   2364 		   MAC2STR(sta->addr), xhdr->version, xhdr->type,
   2365 		   be_to_host16(xhdr->length), ack);
   2366 
   2367 #ifdef CONFIG_WPS
   2368 	if (xhdr->type == IEEE802_1X_TYPE_EAP_PACKET && ack &&
   2369 	    (sta->flags & WLAN_STA_WPS) &&
   2370 	    ap_sta_pending_delayed_1x_auth_fail_disconnect(hapd, sta)) {
   2371 		wpa_printf(MSG_DEBUG,
   2372 			   "WPS: Indicate EAP completion on ACK for EAP-Failure");
   2373 		hostapd_wps_eap_completed(hapd);
   2374 	}
   2375 #endif /* CONFIG_WPS */
   2376 
   2377 	if (xhdr->type != IEEE802_1X_TYPE_EAPOL_KEY)
   2378 		return 0;
   2379 
   2380 	if (pos + sizeof(struct wpa_eapol_key) <= buf + len) {
   2381 		const struct wpa_eapol_key *wpa;
   2382 		wpa = (const struct wpa_eapol_key *) pos;
   2383 		if (wpa->type == EAPOL_KEY_TYPE_RSN ||
   2384 		    wpa->type == EAPOL_KEY_TYPE_WPA)
   2385 			wpa_auth_eapol_key_tx_status(hapd->wpa_auth,
   2386 						     sta->wpa_sm, ack);
   2387 	}
   2388 
   2389 	/* EAPOL EAP-Packet packets are eventually re-sent by either Supplicant
   2390 	 * or Authenticator state machines, but EAPOL-Key packets are not
   2391 	 * retransmitted in case of failure. Try to re-send failed EAPOL-Key
   2392 	 * packets couple of times because otherwise STA keys become
   2393 	 * unsynchronized with AP. */
   2394 	if (!ack && pos + sizeof(*key) <= buf + len) {
   2395 		key = (struct ieee802_1x_eapol_key *) pos;
   2396 		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
   2397 			       HOSTAPD_LEVEL_DEBUG, "did not Ack EAPOL-Key "
   2398 			       "frame (%scast index=%d)",
   2399 			       key->key_index & BIT(7) ? "uni" : "broad",
   2400 			       key->key_index & ~BIT(7));
   2401 		/* TODO: re-send EAPOL-Key couple of times (with short delay
   2402 		 * between them?). If all attempt fail, report error and
   2403 		 * deauthenticate STA so that it will get new keys when
   2404 		 * authenticating again (e.g., after returning in range).
   2405 		 * Separate limit/transmit state needed both for unicast and
   2406 		 * broadcast keys(?) */
   2407 	}
   2408 	/* TODO: could move unicast key configuration from ieee802_1x_tx_key()
   2409 	 * to here and change the key only if the EAPOL-Key packet was Acked.
   2410 	 */
   2411 
   2412 	return 1;
   2413 }
   2414 
   2415 
   2416 u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len)
   2417 {
   2418 	if (sm == NULL || sm->identity == NULL)
   2419 		return NULL;
   2420 
   2421 	*len = sm->identity_len;
   2422 	return sm->identity;
   2423 }
   2424 
   2425 
   2426 u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len,
   2427 				 int idx)
   2428 {
   2429 	if (sm == NULL || sm->radius_class.attr == NULL ||
   2430 	    idx >= (int) sm->radius_class.count)
   2431 		return NULL;
   2432 
   2433 	*len = sm->radius_class.attr[idx].len;
   2434 	return sm->radius_class.attr[idx].data;
   2435 }
   2436 
   2437 
   2438 struct wpabuf * ieee802_1x_get_radius_cui(struct eapol_state_machine *sm)
   2439 {
   2440 	if (sm == NULL)
   2441 		return NULL;
   2442 	return sm->radius_cui;
   2443 }
   2444 
   2445 
   2446 const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len)
   2447 {
   2448 	*len = 0;
   2449 	if (sm == NULL)
   2450 		return NULL;
   2451 
   2452 	*len = sm->eap_if->eapKeyDataLen;
   2453 	return sm->eap_if->eapKeyData;
   2454 }
   2455 
   2456 
   2457 void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm,
   2458 				    int enabled)
   2459 {
   2460 	if (sm == NULL)
   2461 		return;
   2462 	sm->eap_if->portEnabled = enabled ? TRUE : FALSE;
   2463 	eapol_auth_step(sm);
   2464 }
   2465 
   2466 
   2467 void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm,
   2468 				  int valid)
   2469 {
   2470 	if (sm == NULL)
   2471 		return;
   2472 	sm->portValid = valid ? TRUE : FALSE;
   2473 	eapol_auth_step(sm);
   2474 }
   2475 
   2476 
   2477 void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, int pre_auth)
   2478 {
   2479 	if (sm == NULL)
   2480 		return;
   2481 	if (pre_auth)
   2482 		sm->flags |= EAPOL_SM_PREAUTH;
   2483 	else
   2484 		sm->flags &= ~EAPOL_SM_PREAUTH;
   2485 }
   2486 
   2487 
   2488 static const char * bool_txt(Boolean val)
   2489 {
   2490 	return val ? "TRUE" : "FALSE";
   2491 }
   2492 
   2493 
   2494 int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
   2495 {
   2496 	/* TODO */
   2497 	return 0;
   2498 }
   2499 
   2500 
   2501 int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
   2502 			   char *buf, size_t buflen)
   2503 {
   2504 	int len = 0, ret;
   2505 	struct eapol_state_machine *sm = sta->eapol_sm;
   2506 	struct os_reltime diff;
   2507 	const char *name1;
   2508 	const char *name2;
   2509 
   2510 	if (sm == NULL)
   2511 		return 0;
   2512 
   2513 	ret = os_snprintf(buf + len, buflen - len,
   2514 			  "dot1xPaePortNumber=%d\n"
   2515 			  "dot1xPaePortProtocolVersion=%d\n"
   2516 			  "dot1xPaePortCapabilities=1\n"
   2517 			  "dot1xPaePortInitialize=%d\n"
   2518 			  "dot1xPaePortReauthenticate=FALSE\n",
   2519 			  sta->aid,
   2520 			  EAPOL_VERSION,
   2521 			  sm->initialize);
   2522 	if (os_snprintf_error(buflen - len, ret))
   2523 		return len;
   2524 	len += ret;
   2525 
   2526 	/* dot1xAuthConfigTable */
   2527 	ret = os_snprintf(buf + len, buflen - len,
   2528 			  "dot1xAuthPaeState=%d\n"
   2529 			  "dot1xAuthBackendAuthState=%d\n"
   2530 			  "dot1xAuthAdminControlledDirections=%d\n"
   2531 			  "dot1xAuthOperControlledDirections=%d\n"
   2532 			  "dot1xAuthAuthControlledPortStatus=%d\n"
   2533 			  "dot1xAuthAuthControlledPortControl=%d\n"
   2534 			  "dot1xAuthQuietPeriod=%u\n"
   2535 			  "dot1xAuthServerTimeout=%u\n"
   2536 			  "dot1xAuthReAuthPeriod=%u\n"
   2537 			  "dot1xAuthReAuthEnabled=%s\n"
   2538 			  "dot1xAuthKeyTxEnabled=%s\n",
   2539 			  sm->auth_pae_state + 1,
   2540 			  sm->be_auth_state + 1,
   2541 			  sm->adminControlledDirections,
   2542 			  sm->operControlledDirections,
   2543 			  sm->authPortStatus,
   2544 			  sm->portControl,
   2545 			  sm->quietPeriod,
   2546 			  sm->serverTimeout,
   2547 			  sm->reAuthPeriod,
   2548 			  bool_txt(sm->reAuthEnabled),
   2549 			  bool_txt(sm->keyTxEnabled));
   2550 	if (os_snprintf_error(buflen - len, ret))
   2551 		return len;
   2552 	len += ret;
   2553 
   2554 	/* dot1xAuthStatsTable */
   2555 	ret = os_snprintf(buf + len, buflen - len,
   2556 			  "dot1xAuthEapolFramesRx=%u\n"
   2557 			  "dot1xAuthEapolFramesTx=%u\n"
   2558 			  "dot1xAuthEapolStartFramesRx=%u\n"
   2559 			  "dot1xAuthEapolLogoffFramesRx=%u\n"
   2560 			  "dot1xAuthEapolRespIdFramesRx=%u\n"
   2561 			  "dot1xAuthEapolRespFramesRx=%u\n"
   2562 			  "dot1xAuthEapolReqIdFramesTx=%u\n"
   2563 			  "dot1xAuthEapolReqFramesTx=%u\n"
   2564 			  "dot1xAuthInvalidEapolFramesRx=%u\n"
   2565 			  "dot1xAuthEapLengthErrorFramesRx=%u\n"
   2566 			  "dot1xAuthLastEapolFrameVersion=%u\n"
   2567 			  "dot1xAuthLastEapolFrameSource=" MACSTR "\n",
   2568 			  sm->dot1xAuthEapolFramesRx,
   2569 			  sm->dot1xAuthEapolFramesTx,
   2570 			  sm->dot1xAuthEapolStartFramesRx,
   2571 			  sm->dot1xAuthEapolLogoffFramesRx,
   2572 			  sm->dot1xAuthEapolRespIdFramesRx,
   2573 			  sm->dot1xAuthEapolRespFramesRx,
   2574 			  sm->dot1xAuthEapolReqIdFramesTx,
   2575 			  sm->dot1xAuthEapolReqFramesTx,
   2576 			  sm->dot1xAuthInvalidEapolFramesRx,
   2577 			  sm->dot1xAuthEapLengthErrorFramesRx,
   2578 			  sm->dot1xAuthLastEapolFrameVersion,
   2579 			  MAC2STR(sm->addr));
   2580 	if (os_snprintf_error(buflen - len, ret))
   2581 		return len;
   2582 	len += ret;
   2583 
   2584 	/* dot1xAuthDiagTable */
   2585 	ret = os_snprintf(buf + len, buflen - len,
   2586 			  "dot1xAuthEntersConnecting=%u\n"
   2587 			  "dot1xAuthEapLogoffsWhileConnecting=%u\n"
   2588 			  "dot1xAuthEntersAuthenticating=%u\n"
   2589 			  "dot1xAuthAuthSuccessesWhileAuthenticating=%u\n"
   2590 			  "dot1xAuthAuthTimeoutsWhileAuthenticating=%u\n"
   2591 			  "dot1xAuthAuthFailWhileAuthenticating=%u\n"
   2592 			  "dot1xAuthAuthEapStartsWhileAuthenticating=%u\n"
   2593 			  "dot1xAuthAuthEapLogoffWhileAuthenticating=%u\n"
   2594 			  "dot1xAuthAuthReauthsWhileAuthenticated=%u\n"
   2595 			  "dot1xAuthAuthEapStartsWhileAuthenticated=%u\n"
   2596 			  "dot1xAuthAuthEapLogoffWhileAuthenticated=%u\n"
   2597 			  "dot1xAuthBackendResponses=%u\n"
   2598 			  "dot1xAuthBackendAccessChallenges=%u\n"
   2599 			  "dot1xAuthBackendOtherRequestsToSupplicant=%u\n"
   2600 			  "dot1xAuthBackendAuthSuccesses=%u\n"
   2601 			  "dot1xAuthBackendAuthFails=%u\n",
   2602 			  sm->authEntersConnecting,
   2603 			  sm->authEapLogoffsWhileConnecting,
   2604 			  sm->authEntersAuthenticating,
   2605 			  sm->authAuthSuccessesWhileAuthenticating,
   2606 			  sm->authAuthTimeoutsWhileAuthenticating,
   2607 			  sm->authAuthFailWhileAuthenticating,
   2608 			  sm->authAuthEapStartsWhileAuthenticating,
   2609 			  sm->authAuthEapLogoffWhileAuthenticating,
   2610 			  sm->authAuthReauthsWhileAuthenticated,
   2611 			  sm->authAuthEapStartsWhileAuthenticated,
   2612 			  sm->authAuthEapLogoffWhileAuthenticated,
   2613 			  sm->backendResponses,
   2614 			  sm->backendAccessChallenges,
   2615 			  sm->backendOtherRequestsToSupplicant,
   2616 			  sm->backendAuthSuccesses,
   2617 			  sm->backendAuthFails);
   2618 	if (os_snprintf_error(buflen - len, ret))
   2619 		return len;
   2620 	len += ret;
   2621 
   2622 	/* dot1xAuthSessionStatsTable */
   2623 	os_reltime_age(&sta->acct_session_start, &diff);
   2624 	ret = os_snprintf(buf + len, buflen - len,
   2625 			  /* TODO: dot1xAuthSessionOctetsRx */
   2626 			  /* TODO: dot1xAuthSessionOctetsTx */
   2627 			  /* TODO: dot1xAuthSessionFramesRx */
   2628 			  /* TODO: dot1xAuthSessionFramesTx */
   2629 			  "dot1xAuthSessionId=%016llX\n"
   2630 			  "dot1xAuthSessionAuthenticMethod=%d\n"
   2631 			  "dot1xAuthSessionTime=%u\n"
   2632 			  "dot1xAuthSessionTerminateCause=999\n"
   2633 			  "dot1xAuthSessionUserName=%s\n",
   2634 			  (unsigned long long) sta->acct_session_id,
   2635 			  (wpa_key_mgmt_wpa_ieee8021x(
   2636 				   wpa_auth_sta_key_mgmt(sta->wpa_sm))) ?
   2637 			  1 : 2,
   2638 			  (unsigned int) diff.sec,
   2639 			  sm->identity);
   2640 	if (os_snprintf_error(buflen - len, ret))
   2641 		return len;
   2642 	len += ret;
   2643 
   2644 	if (sm->acct_multi_session_id) {
   2645 		ret = os_snprintf(buf + len, buflen - len,
   2646 				  "authMultiSessionId=%016llX\n",
   2647 				  (unsigned long long)
   2648 				  sm->acct_multi_session_id);
   2649 		if (os_snprintf_error(buflen - len, ret))
   2650 			return len;
   2651 		len += ret;
   2652 	}
   2653 
   2654 	name1 = eap_server_get_name(0, sm->eap_type_authsrv);
   2655 	name2 = eap_server_get_name(0, sm->eap_type_supp);
   2656 	ret = os_snprintf(buf + len, buflen - len,
   2657 			  "last_eap_type_as=%d (%s)\n"
   2658 			  "last_eap_type_sta=%d (%s)\n",
   2659 			  sm->eap_type_authsrv, name1,
   2660 			  sm->eap_type_supp, name2);
   2661 	if (os_snprintf_error(buflen - len, ret))
   2662 		return len;
   2663 	len += ret;
   2664 
   2665 	return len;
   2666 }
   2667 
   2668 
   2669 #ifdef CONFIG_HS20
   2670 static void ieee802_1x_wnm_notif_send(void *eloop_ctx, void *timeout_ctx)
   2671 {
   2672 	struct hostapd_data *hapd = eloop_ctx;
   2673 	struct sta_info *sta = timeout_ctx;
   2674 
   2675 	if (sta->remediation) {
   2676 		wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
   2677 			   MACSTR " to indicate Subscription Remediation",
   2678 			   MAC2STR(sta->addr));
   2679 		hs20_send_wnm_notification(hapd, sta->addr,
   2680 					   sta->remediation_method,
   2681 					   sta->remediation_url);
   2682 		os_free(sta->remediation_url);
   2683 		sta->remediation_url = NULL;
   2684 	}
   2685 
   2686 	if (sta->hs20_deauth_req) {
   2687 		wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
   2688 			   MACSTR " to indicate imminent deauthentication",
   2689 			   MAC2STR(sta->addr));
   2690 		hs20_send_wnm_notification_deauth_req(hapd, sta->addr,
   2691 						      sta->hs20_deauth_req);
   2692 	}
   2693 }
   2694 #endif /* CONFIG_HS20 */
   2695 
   2696 
   2697 static void ieee802_1x_finished(struct hostapd_data *hapd,
   2698 				struct sta_info *sta, int success,
   2699 				int remediation)
   2700 {
   2701 	const u8 *key;
   2702 	size_t len;
   2703 	/* TODO: get PMKLifetime from WPA parameters */
   2704 	static const int dot11RSNAConfigPMKLifetime = 43200;
   2705 	unsigned int session_timeout;
   2706 
   2707 #ifdef CONFIG_HS20
   2708 	if (remediation && !sta->remediation) {
   2709 		sta->remediation = 1;
   2710 		os_free(sta->remediation_url);
   2711 		sta->remediation_url =
   2712 			os_strdup(hapd->conf->subscr_remediation_url);
   2713 		sta->remediation_method = 1; /* SOAP-XML SPP */
   2714 	}
   2715 
   2716 	if (success && (sta->remediation || sta->hs20_deauth_req)) {
   2717 		wpa_printf(MSG_DEBUG, "HS 2.0: Schedule WNM-Notification to "
   2718 			   MACSTR " in 100 ms", MAC2STR(sta->addr));
   2719 		eloop_cancel_timeout(ieee802_1x_wnm_notif_send, hapd, sta);
   2720 		eloop_register_timeout(0, 100000, ieee802_1x_wnm_notif_send,
   2721 				       hapd, sta);
   2722 	}
   2723 #endif /* CONFIG_HS20 */
   2724 
   2725 	key = ieee802_1x_get_key(sta->eapol_sm, &len);
   2726 	if (sta->session_timeout_set)
   2727 		session_timeout = sta->session_timeout;
   2728 	else
   2729 		session_timeout = dot11RSNAConfigPMKLifetime;
   2730 	if (success && key && len >= PMK_LEN && !sta->remediation &&
   2731 	    !sta->hs20_deauth_requested &&
   2732 	    wpa_auth_pmksa_add(sta->wpa_sm, key, len, session_timeout,
   2733 			       sta->eapol_sm) == 0) {
   2734 		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
   2735 			       HOSTAPD_LEVEL_DEBUG,
   2736 			       "Added PMKSA cache entry (IEEE 802.1X)");
   2737 	}
   2738 
   2739 	if (!success) {
   2740 		/*
   2741 		 * Many devices require deauthentication after WPS provisioning
   2742 		 * and some may not be be able to do that themselves, so
   2743 		 * disconnect the client here. In addition, this may also
   2744 		 * benefit IEEE 802.1X/EAPOL authentication cases, too since
   2745 		 * the EAPOL PAE state machine would remain in HELD state for
   2746 		 * considerable amount of time and some EAP methods, like
   2747 		 * EAP-FAST with anonymous provisioning, may require another
   2748 		 * EAPOL authentication to be started to complete connection.
   2749 		 */
   2750 		ap_sta_delayed_1x_auth_fail_disconnect(hapd, sta);
   2751 	}
   2752 }
   2753