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[thirdparty/hostap.git] / src / ap / ieee802_1x.c
1 /*
2 * hostapd / IEEE 802.1X-2004 Authenticator
3 * Copyright (c) 2002-2019, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "utils/includes.h"
10 #ifdef CONFIG_SQLITE
11 #include <sqlite3.h>
12 #endif /* CONFIG_SQLITE */
13
14 #include "utils/common.h"
15 #include "utils/eloop.h"
16 #include "crypto/md5.h"
17 #include "crypto/crypto.h"
18 #include "crypto/random.h"
19 #include "common/ieee802_11_defs.h"
20 #include "radius/radius.h"
21 #include "radius/radius_client.h"
22 #include "eap_server/eap.h"
23 #include "eap_common/eap_wsc_common.h"
24 #include "eapol_auth/eapol_auth_sm.h"
25 #include "eapol_auth/eapol_auth_sm_i.h"
26 #include "p2p/p2p.h"
27 #include "hostapd.h"
28 #include "accounting.h"
29 #include "sta_info.h"
30 #include "wpa_auth.h"
31 #include "preauth_auth.h"
32 #include "pmksa_cache_auth.h"
33 #include "ap_config.h"
34 #include "ap_drv_ops.h"
35 #include "wps_hostapd.h"
36 #include "hs20.h"
37 /* FIX: Not really a good thing to require ieee802_11.h here.. (FILS) */
38 #include "ieee802_11.h"
39 #include "ieee802_1x.h"
40 #include "wpa_auth_kay.h"
41
42
43 #ifdef CONFIG_HS20
44 static void ieee802_1x_wnm_notif_send(void *eloop_ctx, void *timeout_ctx);
45 #endif /* CONFIG_HS20 */
46 static void ieee802_1x_finished(struct hostapd_data *hapd,
47 struct sta_info *sta, int success,
48 int remediation);
49
50
51 static void ieee802_1x_send(struct hostapd_data *hapd, struct sta_info *sta,
52 u8 type, const u8 *data, size_t datalen)
53 {
54 u8 *buf;
55 struct ieee802_1x_hdr *xhdr;
56 size_t len;
57 int encrypt = 0;
58
59 len = sizeof(*xhdr) + datalen;
60 buf = os_zalloc(len);
61 if (buf == NULL) {
62 wpa_printf(MSG_ERROR, "malloc() failed for "
63 "ieee802_1x_send(len=%lu)",
64 (unsigned long) len);
65 return;
66 }
67
68 xhdr = (struct ieee802_1x_hdr *) buf;
69 xhdr->version = hapd->conf->eapol_version;
70 #ifdef CONFIG_MACSEC
71 if (xhdr->version > 2 && hapd->conf->macsec_policy == 0)
72 xhdr->version = 2;
73 #endif /* CONFIG_MACSEC */
74 xhdr->type = type;
75 xhdr->length = host_to_be16(datalen);
76
77 if (datalen > 0 && data != NULL)
78 os_memcpy(xhdr + 1, data, datalen);
79
80 if (wpa_auth_pairwise_set(sta->wpa_sm))
81 encrypt = 1;
82 #ifdef CONFIG_TESTING_OPTIONS
83 if (hapd->ext_eapol_frame_io) {
84 size_t hex_len = 2 * len + 1;
85 char *hex = os_malloc(hex_len);
86
87 if (hex) {
88 wpa_snprintf_hex(hex, hex_len, buf, len);
89 wpa_msg(hapd->msg_ctx, MSG_INFO,
90 "EAPOL-TX " MACSTR " %s",
91 MAC2STR(sta->addr), hex);
92 os_free(hex);
93 }
94 } else
95 #endif /* CONFIG_TESTING_OPTIONS */
96 if (sta->flags & WLAN_STA_PREAUTH) {
97 rsn_preauth_send(hapd, sta, buf, len);
98 } else {
99 hostapd_drv_hapd_send_eapol(
100 hapd, sta->addr, buf, len,
101 encrypt, hostapd_sta_flags_to_drv(sta->flags));
102 }
103
104 os_free(buf);
105 }
106
107
108 void ieee802_1x_set_sta_authorized(struct hostapd_data *hapd,
109 struct sta_info *sta, int authorized)
110 {
111 int res;
112
113 if (sta->flags & WLAN_STA_PREAUTH)
114 return;
115
116 if (authorized) {
117 ap_sta_set_authorized(hapd, sta, 1);
118 res = hostapd_set_authorized(hapd, sta, 1);
119 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
120 HOSTAPD_LEVEL_DEBUG, "authorizing port");
121 } else {
122 ap_sta_set_authorized(hapd, sta, 0);
123 res = hostapd_set_authorized(hapd, sta, 0);
124 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
125 HOSTAPD_LEVEL_DEBUG, "unauthorizing port");
126 }
127
128 if (res && errno != ENOENT) {
129 wpa_printf(MSG_DEBUG, "Could not set station " MACSTR
130 " flags for kernel driver (errno=%d).",
131 MAC2STR(sta->addr), errno);
132 }
133
134 if (authorized) {
135 os_get_reltime(&sta->connected_time);
136 accounting_sta_start(hapd, sta);
137 }
138 }
139
140
141 #ifndef CONFIG_FIPS
142 #ifndef CONFIG_NO_RC4
143
144 static void ieee802_1x_tx_key_one(struct hostapd_data *hapd,
145 struct sta_info *sta,
146 int idx, int broadcast,
147 u8 *key_data, size_t key_len)
148 {
149 u8 *buf, *ekey;
150 struct ieee802_1x_hdr *hdr;
151 struct ieee802_1x_eapol_key *key;
152 size_t len, ekey_len;
153 struct eapol_state_machine *sm = sta->eapol_sm;
154
155 if (sm == NULL)
156 return;
157
158 len = sizeof(*key) + key_len;
159 buf = os_zalloc(sizeof(*hdr) + len);
160 if (buf == NULL)
161 return;
162
163 hdr = (struct ieee802_1x_hdr *) buf;
164 key = (struct ieee802_1x_eapol_key *) (hdr + 1);
165 key->type = EAPOL_KEY_TYPE_RC4;
166 WPA_PUT_BE16(key->key_length, key_len);
167 wpa_get_ntp_timestamp(key->replay_counter);
168 if (os_memcmp(key->replay_counter,
169 hapd->last_1x_eapol_key_replay_counter,
170 IEEE8021X_REPLAY_COUNTER_LEN) <= 0) {
171 /* NTP timestamp did not increment from last EAPOL-Key frame;
172 * use previously used value + 1 instead. */
173 inc_byte_array(hapd->last_1x_eapol_key_replay_counter,
174 IEEE8021X_REPLAY_COUNTER_LEN);
175 os_memcpy(key->replay_counter,
176 hapd->last_1x_eapol_key_replay_counter,
177 IEEE8021X_REPLAY_COUNTER_LEN);
178 } else {
179 os_memcpy(hapd->last_1x_eapol_key_replay_counter,
180 key->replay_counter,
181 IEEE8021X_REPLAY_COUNTER_LEN);
182 }
183
184 if (random_get_bytes(key->key_iv, sizeof(key->key_iv))) {
185 wpa_printf(MSG_ERROR, "Could not get random numbers");
186 os_free(buf);
187 return;
188 }
189
190 key->key_index = idx | (broadcast ? 0 : BIT(7));
191 if (hapd->conf->eapol_key_index_workaround) {
192 /* According to some information, WinXP Supplicant seems to
193 * interpret bit7 as an indication whether the key is to be
194 * activated, so make it possible to enable workaround that
195 * sets this bit for all keys. */
196 key->key_index |= BIT(7);
197 }
198
199 /* Key is encrypted using "Key-IV + MSK[0..31]" as the RC4-key and
200 * MSK[32..63] is used to sign the message. */
201 if (sm->eap_if->eapKeyData == NULL || sm->eap_if->eapKeyDataLen < 64) {
202 wpa_printf(MSG_ERROR, "No eapKeyData available for encrypting "
203 "and signing EAPOL-Key");
204 os_free(buf);
205 return;
206 }
207 os_memcpy((u8 *) (key + 1), key_data, key_len);
208 ekey_len = sizeof(key->key_iv) + 32;
209 ekey = os_malloc(ekey_len);
210 if (ekey == NULL) {
211 wpa_printf(MSG_ERROR, "Could not encrypt key");
212 os_free(buf);
213 return;
214 }
215 os_memcpy(ekey, key->key_iv, sizeof(key->key_iv));
216 os_memcpy(ekey + sizeof(key->key_iv), sm->eap_if->eapKeyData, 32);
217 rc4_skip(ekey, ekey_len, 0, (u8 *) (key + 1), key_len);
218 os_free(ekey);
219
220 /* This header is needed here for HMAC-MD5, but it will be regenerated
221 * in ieee802_1x_send() */
222 hdr->version = hapd->conf->eapol_version;
223 #ifdef CONFIG_MACSEC
224 if (hdr->version > 2)
225 hdr->version = 2;
226 #endif /* CONFIG_MACSEC */
227 hdr->type = IEEE802_1X_TYPE_EAPOL_KEY;
228 hdr->length = host_to_be16(len);
229 hmac_md5(sm->eap_if->eapKeyData + 32, 32, buf, sizeof(*hdr) + len,
230 key->key_signature);
231
232 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key to " MACSTR
233 " (%s index=%d)", MAC2STR(sm->addr),
234 broadcast ? "broadcast" : "unicast", idx);
235 ieee802_1x_send(hapd, sta, IEEE802_1X_TYPE_EAPOL_KEY, (u8 *) key, len);
236 if (sta->eapol_sm)
237 sta->eapol_sm->dot1xAuthEapolFramesTx++;
238 os_free(buf);
239 }
240
241
242 static void ieee802_1x_tx_key(struct hostapd_data *hapd, struct sta_info *sta)
243 {
244 struct eapol_authenticator *eapol = hapd->eapol_auth;
245 struct eapol_state_machine *sm = sta->eapol_sm;
246
247 if (sm == NULL || !sm->eap_if->eapKeyData)
248 return;
249
250 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key(s) to " MACSTR,
251 MAC2STR(sta->addr));
252
253 #ifndef CONFIG_NO_VLAN
254 if (sta->vlan_id > 0) {
255 wpa_printf(MSG_ERROR, "Using WEP with vlans is not supported.");
256 return;
257 }
258 #endif /* CONFIG_NO_VLAN */
259
260 if (eapol->default_wep_key) {
261 ieee802_1x_tx_key_one(hapd, sta, eapol->default_wep_key_idx, 1,
262 eapol->default_wep_key,
263 hapd->conf->default_wep_key_len);
264 }
265
266 if (hapd->conf->individual_wep_key_len > 0) {
267 u8 *ikey;
268 ikey = os_malloc(hapd->conf->individual_wep_key_len);
269 if (ikey == NULL ||
270 random_get_bytes(ikey, hapd->conf->individual_wep_key_len))
271 {
272 wpa_printf(MSG_ERROR, "Could not generate random "
273 "individual WEP key.");
274 os_free(ikey);
275 return;
276 }
277
278 wpa_hexdump_key(MSG_DEBUG, "Individual WEP key",
279 ikey, hapd->conf->individual_wep_key_len);
280
281 ieee802_1x_tx_key_one(hapd, sta, 0, 0, ikey,
282 hapd->conf->individual_wep_key_len);
283
284 /* TODO: set encryption in TX callback, i.e., only after STA
285 * has ACKed EAPOL-Key frame */
286 if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
287 sta->addr, 0, 1, NULL, 0, ikey,
288 hapd->conf->individual_wep_key_len)) {
289 wpa_printf(MSG_ERROR, "Could not set individual WEP "
290 "encryption.");
291 }
292
293 os_free(ikey);
294 }
295 }
296
297 #endif /* CONFIG_NO_RC4 */
298 #endif /* CONFIG_FIPS */
299
300
301 const char *radius_mode_txt(struct hostapd_data *hapd)
302 {
303 switch (hapd->iface->conf->hw_mode) {
304 case HOSTAPD_MODE_IEEE80211AD:
305 return "802.11ad";
306 case HOSTAPD_MODE_IEEE80211A:
307 return "802.11a";
308 case HOSTAPD_MODE_IEEE80211G:
309 return "802.11g";
310 case HOSTAPD_MODE_IEEE80211B:
311 default:
312 return "802.11b";
313 }
314 }
315
316
317 int radius_sta_rate(struct hostapd_data *hapd, struct sta_info *sta)
318 {
319 int i;
320 u8 rate = 0;
321
322 for (i = 0; i < sta->supported_rates_len; i++)
323 if ((sta->supported_rates[i] & 0x7f) > rate)
324 rate = sta->supported_rates[i] & 0x7f;
325
326 return rate;
327 }
328
329
330 #ifndef CONFIG_NO_RADIUS
331 static void ieee802_1x_learn_identity(struct hostapd_data *hapd,
332 struct eapol_state_machine *sm,
333 const u8 *eap, size_t len)
334 {
335 const u8 *identity;
336 size_t identity_len;
337 const struct eap_hdr *hdr = (const struct eap_hdr *) eap;
338
339 if (len <= sizeof(struct eap_hdr) ||
340 (hdr->code == EAP_CODE_RESPONSE &&
341 eap[sizeof(struct eap_hdr)] != EAP_TYPE_IDENTITY) ||
342 (hdr->code == EAP_CODE_INITIATE &&
343 eap[sizeof(struct eap_hdr)] != EAP_ERP_TYPE_REAUTH) ||
344 (hdr->code != EAP_CODE_RESPONSE &&
345 hdr->code != EAP_CODE_INITIATE))
346 return;
347
348 eap_erp_update_identity(sm->eap, eap, len);
349 identity = eap_get_identity(sm->eap, &identity_len);
350 if (identity == NULL)
351 return;
352
353 /* Save station identity for future RADIUS packets */
354 os_free(sm->identity);
355 sm->identity = (u8 *) dup_binstr(identity, identity_len);
356 if (sm->identity == NULL) {
357 sm->identity_len = 0;
358 return;
359 }
360
361 sm->identity_len = identity_len;
362 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
363 HOSTAPD_LEVEL_DEBUG, "STA identity '%s'", sm->identity);
364 sm->dot1xAuthEapolRespIdFramesRx++;
365 }
366
367
368 static int add_common_radius_sta_attr_rsn(struct hostapd_data *hapd,
369 struct hostapd_radius_attr *req_attr,
370 struct sta_info *sta,
371 struct radius_msg *msg)
372 {
373 u32 suite;
374 int ver, val;
375
376 ver = wpa_auth_sta_wpa_version(sta->wpa_sm);
377 val = wpa_auth_get_pairwise(sta->wpa_sm);
378 suite = wpa_cipher_to_suite(ver, val);
379 if (val != -1 &&
380 !hostapd_config_get_radius_attr(req_attr,
381 RADIUS_ATTR_WLAN_PAIRWISE_CIPHER) &&
382 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_PAIRWISE_CIPHER,
383 suite)) {
384 wpa_printf(MSG_ERROR, "Could not add WLAN-Pairwise-Cipher");
385 return -1;
386 }
387
388 suite = wpa_cipher_to_suite(((hapd->conf->wpa & 0x2) ||
389 hapd->conf->osen) ?
390 WPA_PROTO_RSN : WPA_PROTO_WPA,
391 hapd->conf->wpa_group);
392 if (!hostapd_config_get_radius_attr(req_attr,
393 RADIUS_ATTR_WLAN_GROUP_CIPHER) &&
394 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_GROUP_CIPHER,
395 suite)) {
396 wpa_printf(MSG_ERROR, "Could not add WLAN-Group-Cipher");
397 return -1;
398 }
399
400 val = wpa_auth_sta_key_mgmt(sta->wpa_sm);
401 suite = wpa_akm_to_suite(val);
402 if (val != -1 &&
403 !hostapd_config_get_radius_attr(req_attr,
404 RADIUS_ATTR_WLAN_AKM_SUITE) &&
405 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_AKM_SUITE,
406 suite)) {
407 wpa_printf(MSG_ERROR, "Could not add WLAN-AKM-Suite");
408 return -1;
409 }
410
411 #ifdef CONFIG_IEEE80211W
412 if (hapd->conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
413 suite = wpa_cipher_to_suite(WPA_PROTO_RSN,
414 hapd->conf->group_mgmt_cipher);
415 if (!hostapd_config_get_radius_attr(
416 req_attr, RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER) &&
417 !radius_msg_add_attr_int32(
418 msg, RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER, suite)) {
419 wpa_printf(MSG_ERROR,
420 "Could not add WLAN-Group-Mgmt-Cipher");
421 return -1;
422 }
423 }
424 #endif /* CONFIG_IEEE80211W */
425
426 return 0;
427 }
428
429
430 static int add_common_radius_sta_attr(struct hostapd_data *hapd,
431 struct hostapd_radius_attr *req_attr,
432 struct sta_info *sta,
433 struct radius_msg *msg)
434 {
435 char buf[128];
436
437 if (!hostapd_config_get_radius_attr(req_attr,
438 RADIUS_ATTR_SERVICE_TYPE) &&
439 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_SERVICE_TYPE,
440 RADIUS_SERVICE_TYPE_FRAMED)) {
441 wpa_printf(MSG_ERROR, "Could not add Service-Type");
442 return -1;
443 }
444
445 if (!hostapd_config_get_radius_attr(req_attr,
446 RADIUS_ATTR_NAS_PORT) &&
447 sta->aid > 0 &&
448 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT, sta->aid)) {
449 wpa_printf(MSG_ERROR, "Could not add NAS-Port");
450 return -1;
451 }
452
453 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
454 MAC2STR(sta->addr));
455 buf[sizeof(buf) - 1] = '\0';
456 if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
457 (u8 *) buf, os_strlen(buf))) {
458 wpa_printf(MSG_ERROR, "Could not add Calling-Station-Id");
459 return -1;
460 }
461
462 if (sta->flags & WLAN_STA_PREAUTH) {
463 os_strlcpy(buf, "IEEE 802.11i Pre-Authentication",
464 sizeof(buf));
465 } else {
466 os_snprintf(buf, sizeof(buf), "CONNECT %d%sMbps %s",
467 radius_sta_rate(hapd, sta) / 2,
468 (radius_sta_rate(hapd, sta) & 1) ? ".5" : "",
469 radius_mode_txt(hapd));
470 buf[sizeof(buf) - 1] = '\0';
471 }
472 if (!hostapd_config_get_radius_attr(req_attr,
473 RADIUS_ATTR_CONNECT_INFO) &&
474 !radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
475 (u8 *) buf, os_strlen(buf))) {
476 wpa_printf(MSG_ERROR, "Could not add Connect-Info");
477 return -1;
478 }
479
480 if (sta->acct_session_id) {
481 os_snprintf(buf, sizeof(buf), "%016llX",
482 (unsigned long long) sta->acct_session_id);
483 if (!radius_msg_add_attr(msg, RADIUS_ATTR_ACCT_SESSION_ID,
484 (u8 *) buf, os_strlen(buf))) {
485 wpa_printf(MSG_ERROR, "Could not add Acct-Session-Id");
486 return -1;
487 }
488 }
489
490 if ((hapd->conf->wpa & 2) &&
491 !hapd->conf->disable_pmksa_caching &&
492 sta->eapol_sm && sta->eapol_sm->acct_multi_session_id) {
493 os_snprintf(buf, sizeof(buf), "%016llX",
494 (unsigned long long)
495 sta->eapol_sm->acct_multi_session_id);
496 if (!radius_msg_add_attr(
497 msg, RADIUS_ATTR_ACCT_MULTI_SESSION_ID,
498 (u8 *) buf, os_strlen(buf))) {
499 wpa_printf(MSG_INFO,
500 "Could not add Acct-Multi-Session-Id");
501 return -1;
502 }
503 }
504
505 #ifdef CONFIG_IEEE80211R_AP
506 if (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) &&
507 sta->wpa_sm &&
508 (wpa_key_mgmt_ft(wpa_auth_sta_key_mgmt(sta->wpa_sm)) ||
509 sta->auth_alg == WLAN_AUTH_FT) &&
510 !hostapd_config_get_radius_attr(req_attr,
511 RADIUS_ATTR_MOBILITY_DOMAIN_ID) &&
512 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_MOBILITY_DOMAIN_ID,
513 WPA_GET_BE16(
514 hapd->conf->mobility_domain))) {
515 wpa_printf(MSG_ERROR, "Could not add Mobility-Domain-Id");
516 return -1;
517 }
518 #endif /* CONFIG_IEEE80211R_AP */
519
520 if ((hapd->conf->wpa || hapd->conf->osen) && sta->wpa_sm &&
521 add_common_radius_sta_attr_rsn(hapd, req_attr, sta, msg) < 0)
522 return -1;
523
524 return 0;
525 }
526
527
528 int add_common_radius_attr(struct hostapd_data *hapd,
529 struct hostapd_radius_attr *req_attr,
530 struct sta_info *sta,
531 struct radius_msg *msg)
532 {
533 char buf[128];
534 struct hostapd_radius_attr *attr;
535 int len;
536
537 if (!hostapd_config_get_radius_attr(req_attr,
538 RADIUS_ATTR_NAS_IP_ADDRESS) &&
539 hapd->conf->own_ip_addr.af == AF_INET &&
540 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
541 (u8 *) &hapd->conf->own_ip_addr.u.v4, 4)) {
542 wpa_printf(MSG_ERROR, "Could not add NAS-IP-Address");
543 return -1;
544 }
545
546 #ifdef CONFIG_IPV6
547 if (!hostapd_config_get_radius_attr(req_attr,
548 RADIUS_ATTR_NAS_IPV6_ADDRESS) &&
549 hapd->conf->own_ip_addr.af == AF_INET6 &&
550 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IPV6_ADDRESS,
551 (u8 *) &hapd->conf->own_ip_addr.u.v6, 16)) {
552 wpa_printf(MSG_ERROR, "Could not add NAS-IPv6-Address");
553 return -1;
554 }
555 #endif /* CONFIG_IPV6 */
556
557 if (!hostapd_config_get_radius_attr(req_attr,
558 RADIUS_ATTR_NAS_IDENTIFIER) &&
559 hapd->conf->nas_identifier &&
560 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IDENTIFIER,
561 (u8 *) hapd->conf->nas_identifier,
562 os_strlen(hapd->conf->nas_identifier))) {
563 wpa_printf(MSG_ERROR, "Could not add NAS-Identifier");
564 return -1;
565 }
566
567 len = os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT ":",
568 MAC2STR(hapd->own_addr));
569 os_memcpy(&buf[len], hapd->conf->ssid.ssid,
570 hapd->conf->ssid.ssid_len);
571 len += hapd->conf->ssid.ssid_len;
572 if (!hostapd_config_get_radius_attr(req_attr,
573 RADIUS_ATTR_CALLED_STATION_ID) &&
574 !radius_msg_add_attr(msg, RADIUS_ATTR_CALLED_STATION_ID,
575 (u8 *) buf, len)) {
576 wpa_printf(MSG_ERROR, "Could not add Called-Station-Id");
577 return -1;
578 }
579
580 if (!hostapd_config_get_radius_attr(req_attr,
581 RADIUS_ATTR_NAS_PORT_TYPE) &&
582 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
583 RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
584 wpa_printf(MSG_ERROR, "Could not add NAS-Port-Type");
585 return -1;
586 }
587
588 #ifdef CONFIG_INTERWORKING
589 if (hapd->conf->interworking &&
590 !is_zero_ether_addr(hapd->conf->hessid)) {
591 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
592 MAC2STR(hapd->conf->hessid));
593 buf[sizeof(buf) - 1] = '\0';
594 if (!hostapd_config_get_radius_attr(req_attr,
595 RADIUS_ATTR_WLAN_HESSID) &&
596 !radius_msg_add_attr(msg, RADIUS_ATTR_WLAN_HESSID,
597 (u8 *) buf, os_strlen(buf))) {
598 wpa_printf(MSG_ERROR, "Could not add WLAN-HESSID");
599 return -1;
600 }
601 }
602 #endif /* CONFIG_INTERWORKING */
603
604 if (sta && add_common_radius_sta_attr(hapd, req_attr, sta, msg) < 0)
605 return -1;
606
607 for (attr = req_attr; attr; attr = attr->next) {
608 if (!radius_msg_add_attr(msg, attr->type,
609 wpabuf_head(attr->val),
610 wpabuf_len(attr->val))) {
611 wpa_printf(MSG_ERROR, "Could not add RADIUS "
612 "attribute");
613 return -1;
614 }
615 }
616
617 return 0;
618 }
619
620
621 int add_sqlite_radius_attr(struct hostapd_data *hapd, struct sta_info *sta,
622 struct radius_msg *msg, int acct)
623 {
624 #ifdef CONFIG_SQLITE
625 const char *attrtxt;
626 char addrtxt[3 * ETH_ALEN];
627 char *sql;
628 sqlite3_stmt *stmt = NULL;
629
630 if (!hapd->rad_attr_db)
631 return 0;
632
633 os_snprintf(addrtxt, sizeof(addrtxt), MACSTR, MAC2STR(sta->addr));
634
635 sql = "SELECT attr FROM radius_attributes WHERE sta=? AND (reqtype=? OR reqtype IS NULL);";
636 if (sqlite3_prepare_v2(hapd->rad_attr_db, sql, os_strlen(sql), &stmt,
637 NULL) != SQLITE_OK) {
638 wpa_printf(MSG_ERROR, "DB: Failed to prepare SQL statement: %s",
639 sqlite3_errmsg(hapd->rad_attr_db));
640 return -1;
641 }
642 sqlite3_bind_text(stmt, 1, addrtxt, os_strlen(addrtxt), SQLITE_STATIC);
643 sqlite3_bind_text(stmt, 2, acct ? "acct" : "auth", 4, SQLITE_STATIC);
644 while (sqlite3_step(stmt) == SQLITE_ROW) {
645 struct hostapd_radius_attr *attr;
646 struct radius_attr_hdr *hdr;
647
648 attrtxt = (const char *) sqlite3_column_text(stmt, 0);
649 attr = hostapd_parse_radius_attr(attrtxt);
650 if (!attr) {
651 wpa_printf(MSG_ERROR,
652 "Skipping invalid attribute from SQL: %s",
653 attrtxt);
654 continue;
655 }
656 wpa_printf(MSG_DEBUG, "Adding RADIUS attribute from SQL: %s",
657 attrtxt);
658 hdr = radius_msg_add_attr(msg, attr->type,
659 wpabuf_head(attr->val),
660 wpabuf_len(attr->val));
661 hostapd_config_free_radius_attr(attr);
662 if (!hdr) {
663 wpa_printf(MSG_ERROR,
664 "Could not add RADIUS attribute from SQL");
665 continue;
666 }
667 }
668
669 sqlite3_reset(stmt);
670 sqlite3_clear_bindings(stmt);
671 sqlite3_finalize(stmt);
672 #endif /* CONFIG_SQLITE */
673
674 return 0;
675 }
676
677
678 void ieee802_1x_encapsulate_radius(struct hostapd_data *hapd,
679 struct sta_info *sta,
680 const u8 *eap, size_t len)
681 {
682 struct radius_msg *msg;
683 struct eapol_state_machine *sm = sta->eapol_sm;
684
685 if (sm == NULL)
686 return;
687
688 ieee802_1x_learn_identity(hapd, sm, eap, len);
689
690 wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
691 "packet");
692
693 sm->radius_identifier = radius_client_get_id(hapd->radius);
694 msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
695 sm->radius_identifier);
696 if (msg == NULL) {
697 wpa_printf(MSG_INFO, "Could not create new RADIUS packet");
698 return;
699 }
700
701 if (radius_msg_make_authenticator(msg) < 0) {
702 wpa_printf(MSG_INFO, "Could not make Request Authenticator");
703 goto fail;
704 }
705
706 if (sm->identity &&
707 !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
708 sm->identity, sm->identity_len)) {
709 wpa_printf(MSG_INFO, "Could not add User-Name");
710 goto fail;
711 }
712
713 if (add_common_radius_attr(hapd, hapd->conf->radius_auth_req_attr, sta,
714 msg) < 0)
715 goto fail;
716
717 if (sta && add_sqlite_radius_attr(hapd, sta, msg, 0) < 0)
718 goto fail;
719
720 /* TODO: should probably check MTU from driver config; 2304 is max for
721 * IEEE 802.11, but use 1400 to avoid problems with too large packets
722 */
723 if (!hostapd_config_get_radius_attr(hapd->conf->radius_auth_req_attr,
724 RADIUS_ATTR_FRAMED_MTU) &&
725 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
726 wpa_printf(MSG_INFO, "Could not add Framed-MTU");
727 goto fail;
728 }
729
730 if (!radius_msg_add_eap(msg, eap, len)) {
731 wpa_printf(MSG_INFO, "Could not add EAP-Message");
732 goto fail;
733 }
734
735 /* State attribute must be copied if and only if this packet is
736 * Access-Request reply to the previous Access-Challenge */
737 if (sm->last_recv_radius &&
738 radius_msg_get_hdr(sm->last_recv_radius)->code ==
739 RADIUS_CODE_ACCESS_CHALLENGE) {
740 int res = radius_msg_copy_attr(msg, sm->last_recv_radius,
741 RADIUS_ATTR_STATE);
742 if (res < 0) {
743 wpa_printf(MSG_INFO, "Could not copy State attribute from previous Access-Challenge");
744 goto fail;
745 }
746 if (res > 0) {
747 wpa_printf(MSG_DEBUG, "Copied RADIUS State Attribute");
748 }
749 }
750
751 if (hapd->conf->radius_request_cui) {
752 const u8 *cui;
753 size_t cui_len;
754 /* Add previously learned CUI or nul CUI to request CUI */
755 if (sm->radius_cui) {
756 cui = wpabuf_head(sm->radius_cui);
757 cui_len = wpabuf_len(sm->radius_cui);
758 } else {
759 cui = (const u8 *) "\0";
760 cui_len = 1;
761 }
762 if (!radius_msg_add_attr(msg,
763 RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
764 cui, cui_len)) {
765 wpa_printf(MSG_ERROR, "Could not add CUI");
766 goto fail;
767 }
768 }
769
770 #ifdef CONFIG_HS20
771 if (hapd->conf->hs20) {
772 u8 ver = hapd->conf->hs20_release - 1;
773
774 if (!radius_msg_add_wfa(
775 msg, RADIUS_VENDOR_ATTR_WFA_HS20_AP_VERSION,
776 &ver, 1)) {
777 wpa_printf(MSG_ERROR, "Could not add HS 2.0 AP "
778 "version");
779 goto fail;
780 }
781
782 if (sta->hs20_ie && wpabuf_len(sta->hs20_ie) > 0) {
783 const u8 *pos;
784 u8 buf[3];
785 u16 id;
786 pos = wpabuf_head_u8(sta->hs20_ie);
787 buf[0] = (*pos) >> 4;
788 if (((*pos) & HS20_PPS_MO_ID_PRESENT) &&
789 wpabuf_len(sta->hs20_ie) >= 3)
790 id = WPA_GET_LE16(pos + 1);
791 else
792 id = 0;
793 WPA_PUT_BE16(buf + 1, id);
794 if (!radius_msg_add_wfa(
795 msg,
796 RADIUS_VENDOR_ATTR_WFA_HS20_STA_VERSION,
797 buf, sizeof(buf))) {
798 wpa_printf(MSG_ERROR, "Could not add HS 2.0 "
799 "STA version");
800 goto fail;
801 }
802 }
803
804 if (sta->roaming_consortium &&
805 !radius_msg_add_wfa(
806 msg, RADIUS_VENDOR_ATTR_WFA_HS20_ROAMING_CONSORTIUM,
807 wpabuf_head(sta->roaming_consortium),
808 wpabuf_len(sta->roaming_consortium))) {
809 wpa_printf(MSG_ERROR,
810 "Could not add HS 2.0 Roaming Consortium");
811 goto fail;
812 }
813
814 if (hapd->conf->t_c_filename) {
815 be32 timestamp;
816
817 if (!radius_msg_add_wfa(
818 msg,
819 RADIUS_VENDOR_ATTR_WFA_HS20_T_C_FILENAME,
820 (const u8 *) hapd->conf->t_c_filename,
821 os_strlen(hapd->conf->t_c_filename))) {
822 wpa_printf(MSG_ERROR,
823 "Could not add HS 2.0 T&C Filename");
824 goto fail;
825 }
826
827 timestamp = host_to_be32(hapd->conf->t_c_timestamp);
828 if (!radius_msg_add_wfa(
829 msg,
830 RADIUS_VENDOR_ATTR_WFA_HS20_TIMESTAMP,
831 (const u8 *) &timestamp,
832 sizeof(timestamp))) {
833 wpa_printf(MSG_ERROR,
834 "Could not add HS 2.0 Timestamp");
835 goto fail;
836 }
837 }
838 }
839 #endif /* CONFIG_HS20 */
840
841 if (radius_client_send(hapd->radius, msg, RADIUS_AUTH, sta->addr) < 0)
842 goto fail;
843
844 return;
845
846 fail:
847 radius_msg_free(msg);
848 }
849 #endif /* CONFIG_NO_RADIUS */
850
851
852 static void handle_eap_response(struct hostapd_data *hapd,
853 struct sta_info *sta, struct eap_hdr *eap,
854 size_t len)
855 {
856 u8 type, *data;
857 struct eapol_state_machine *sm = sta->eapol_sm;
858 if (sm == NULL)
859 return;
860
861 data = (u8 *) (eap + 1);
862
863 if (len < sizeof(*eap) + 1) {
864 wpa_printf(MSG_INFO, "handle_eap_response: too short response data");
865 return;
866 }
867
868 sm->eap_type_supp = type = data[0];
869
870 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
871 HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
872 "id=%d len=%d) from STA: EAP Response-%s (%d)",
873 eap->code, eap->identifier, be_to_host16(eap->length),
874 eap_server_get_name(0, type), type);
875
876 sm->dot1xAuthEapolRespFramesRx++;
877
878 wpabuf_free(sm->eap_if->eapRespData);
879 sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
880 sm->eapolEap = TRUE;
881 }
882
883
884 static void handle_eap_initiate(struct hostapd_data *hapd,
885 struct sta_info *sta, struct eap_hdr *eap,
886 size_t len)
887 {
888 #ifdef CONFIG_ERP
889 u8 type, *data;
890 struct eapol_state_machine *sm = sta->eapol_sm;
891
892 if (sm == NULL)
893 return;
894
895 if (len < sizeof(*eap) + 1) {
896 wpa_printf(MSG_INFO,
897 "handle_eap_initiate: too short response data");
898 return;
899 }
900
901 data = (u8 *) (eap + 1);
902 type = data[0];
903
904 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
905 HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
906 "id=%d len=%d) from STA: EAP Initiate type %u",
907 eap->code, eap->identifier, be_to_host16(eap->length),
908 type);
909
910 wpabuf_free(sm->eap_if->eapRespData);
911 sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
912 sm->eapolEap = TRUE;
913 #endif /* CONFIG_ERP */
914 }
915
916
917 #ifndef CONFIG_NO_STDOUT_DEBUG
918 static const char * eap_code_str(u8 code)
919 {
920 switch (code) {
921 case EAP_CODE_REQUEST:
922 return "request";
923 case EAP_CODE_RESPONSE:
924 return "response";
925 case EAP_CODE_SUCCESS:
926 return "success";
927 case EAP_CODE_FAILURE:
928 return "failure";
929 case EAP_CODE_INITIATE:
930 return "initiate";
931 case EAP_CODE_FINISH:
932 return "finish";
933 default:
934 return "unknown";
935 }
936 }
937 #endif /* CONFIG_NO_STDOUT_DEBUG */
938
939
940 /* Process incoming EAP packet from Supplicant */
941 static void handle_eap(struct hostapd_data *hapd, struct sta_info *sta,
942 u8 *buf, size_t len)
943 {
944 struct eap_hdr *eap;
945 u16 eap_len;
946
947 if (len < sizeof(*eap)) {
948 wpa_printf(MSG_INFO, " too short EAP packet");
949 return;
950 }
951
952 eap = (struct eap_hdr *) buf;
953
954 eap_len = be_to_host16(eap->length);
955 wpa_printf(MSG_DEBUG, "EAP: code=%d (%s) identifier=%d length=%d",
956 eap->code, eap_code_str(eap->code), eap->identifier,
957 eap_len);
958 if (eap_len < sizeof(*eap)) {
959 wpa_printf(MSG_DEBUG, " Invalid EAP length");
960 return;
961 } else if (eap_len > len) {
962 wpa_printf(MSG_DEBUG, " Too short frame to contain this EAP "
963 "packet");
964 return;
965 } else if (eap_len < len) {
966 wpa_printf(MSG_DEBUG, " Ignoring %lu extra bytes after EAP "
967 "packet", (unsigned long) len - eap_len);
968 }
969
970 switch (eap->code) {
971 case EAP_CODE_RESPONSE:
972 handle_eap_response(hapd, sta, eap, eap_len);
973 break;
974 case EAP_CODE_INITIATE:
975 handle_eap_initiate(hapd, sta, eap, eap_len);
976 break;
977 }
978 }
979
980
981 struct eapol_state_machine *
982 ieee802_1x_alloc_eapol_sm(struct hostapd_data *hapd, struct sta_info *sta)
983 {
984 int flags = 0;
985 if (sta->flags & WLAN_STA_PREAUTH)
986 flags |= EAPOL_SM_PREAUTH;
987 if (sta->wpa_sm) {
988 flags |= EAPOL_SM_USES_WPA;
989 if (wpa_auth_sta_get_pmksa(sta->wpa_sm))
990 flags |= EAPOL_SM_FROM_PMKSA_CACHE;
991 }
992 return eapol_auth_alloc(hapd->eapol_auth, sta->addr, flags,
993 sta->wps_ie, sta->p2p_ie, sta,
994 sta->identity, sta->radius_cui);
995 }
996
997
998 static void ieee802_1x_save_eapol(struct sta_info *sta, const u8 *buf,
999 size_t len)
1000 {
1001 if (sta->pending_eapol_rx) {
1002 wpabuf_free(sta->pending_eapol_rx->buf);
1003 } else {
1004 sta->pending_eapol_rx =
1005 os_malloc(sizeof(*sta->pending_eapol_rx));
1006 if (!sta->pending_eapol_rx)
1007 return;
1008 }
1009
1010 sta->pending_eapol_rx->buf = wpabuf_alloc_copy(buf, len);
1011 if (!sta->pending_eapol_rx->buf) {
1012 os_free(sta->pending_eapol_rx);
1013 sta->pending_eapol_rx = NULL;
1014 return;
1015 }
1016
1017 os_get_reltime(&sta->pending_eapol_rx->rx_time);
1018 }
1019
1020
1021 /**
1022 * ieee802_1x_receive - Process the EAPOL frames from the Supplicant
1023 * @hapd: hostapd BSS data
1024 * @sa: Source address (sender of the EAPOL frame)
1025 * @buf: EAPOL frame
1026 * @len: Length of buf in octets
1027 *
1028 * This function is called for each incoming EAPOL frame from the interface
1029 */
1030 void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf,
1031 size_t len)
1032 {
1033 struct sta_info *sta;
1034 struct ieee802_1x_hdr *hdr;
1035 struct ieee802_1x_eapol_key *key;
1036 u16 datalen;
1037 struct rsn_pmksa_cache_entry *pmksa;
1038 int key_mgmt;
1039
1040 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen &&
1041 !hapd->conf->wps_state)
1042 return;
1043
1044 wpa_printf(MSG_DEBUG, "IEEE 802.1X: %lu bytes from " MACSTR,
1045 (unsigned long) len, MAC2STR(sa));
1046 sta = ap_get_sta(hapd, sa);
1047 if (!sta || (!(sta->flags & (WLAN_STA_ASSOC | WLAN_STA_PREAUTH)) &&
1048 !(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED))) {
1049 wpa_printf(MSG_DEBUG, "IEEE 802.1X data frame from not "
1050 "associated/Pre-authenticating STA");
1051
1052 if (sta && (sta->flags & WLAN_STA_AUTH)) {
1053 wpa_printf(MSG_DEBUG, "Saving EAPOL frame from " MACSTR
1054 " for later use", MAC2STR(sta->addr));
1055 ieee802_1x_save_eapol(sta, buf, len);
1056 }
1057
1058 return;
1059 }
1060
1061 if (len < sizeof(*hdr)) {
1062 wpa_printf(MSG_INFO, " too short IEEE 802.1X packet");
1063 return;
1064 }
1065
1066 hdr = (struct ieee802_1x_hdr *) buf;
1067 datalen = be_to_host16(hdr->length);
1068 wpa_printf(MSG_DEBUG, " IEEE 802.1X: version=%d type=%d length=%d",
1069 hdr->version, hdr->type, datalen);
1070
1071 if (len - sizeof(*hdr) < datalen) {
1072 wpa_printf(MSG_INFO, " frame too short for this IEEE 802.1X packet");
1073 if (sta->eapol_sm)
1074 sta->eapol_sm->dot1xAuthEapLengthErrorFramesRx++;
1075 return;
1076 }
1077 if (len - sizeof(*hdr) > datalen) {
1078 wpa_printf(MSG_DEBUG, " ignoring %lu extra octets after "
1079 "IEEE 802.1X packet",
1080 (unsigned long) len - sizeof(*hdr) - datalen);
1081 }
1082
1083 if (sta->eapol_sm) {
1084 sta->eapol_sm->dot1xAuthLastEapolFrameVersion = hdr->version;
1085 sta->eapol_sm->dot1xAuthEapolFramesRx++;
1086 }
1087
1088 key = (struct ieee802_1x_eapol_key *) (hdr + 1);
1089 if (datalen >= sizeof(struct ieee802_1x_eapol_key) &&
1090 hdr->type == IEEE802_1X_TYPE_EAPOL_KEY &&
1091 (key->type == EAPOL_KEY_TYPE_WPA ||
1092 key->type == EAPOL_KEY_TYPE_RSN)) {
1093 wpa_receive(hapd->wpa_auth, sta->wpa_sm, (u8 *) hdr,
1094 sizeof(*hdr) + datalen);
1095 return;
1096 }
1097
1098 if (!hapd->conf->ieee802_1x && !hapd->conf->osen &&
1099 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
1100 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
1101 "802.1X not enabled and WPS not used");
1102 return;
1103 }
1104
1105 key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
1106 if (key_mgmt != -1 &&
1107 (wpa_key_mgmt_wpa_psk(key_mgmt) || key_mgmt == WPA_KEY_MGMT_OWE ||
1108 key_mgmt == WPA_KEY_MGMT_DPP)) {
1109 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
1110 "STA is using PSK");
1111 return;
1112 }
1113
1114 if (!sta->eapol_sm) {
1115 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
1116 if (!sta->eapol_sm)
1117 return;
1118
1119 #ifdef CONFIG_WPS
1120 if (!hapd->conf->ieee802_1x && hapd->conf->wps_state) {
1121 u32 wflags = sta->flags & (WLAN_STA_WPS |
1122 WLAN_STA_WPS2 |
1123 WLAN_STA_MAYBE_WPS);
1124 if (wflags == WLAN_STA_MAYBE_WPS ||
1125 wflags == (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) {
1126 /*
1127 * Delay EAPOL frame transmission until a
1128 * possible WPS STA initiates the handshake
1129 * with EAPOL-Start. Only allow the wait to be
1130 * skipped if the STA is known to support WPS
1131 * 2.0.
1132 */
1133 wpa_printf(MSG_DEBUG, "WPS: Do not start "
1134 "EAPOL until EAPOL-Start is "
1135 "received");
1136 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
1137 }
1138 }
1139 #endif /* CONFIG_WPS */
1140
1141 sta->eapol_sm->eap_if->portEnabled = TRUE;
1142 }
1143
1144 /* since we support version 1, we can ignore version field and proceed
1145 * as specified in version 1 standard [IEEE Std 802.1X-2001, 7.5.5] */
1146 /* TODO: actually, we are not version 1 anymore.. However, Version 2
1147 * does not change frame contents, so should be ok to process frames
1148 * more or less identically. Some changes might be needed for
1149 * verification of fields. */
1150
1151 switch (hdr->type) {
1152 case IEEE802_1X_TYPE_EAP_PACKET:
1153 handle_eap(hapd, sta, (u8 *) (hdr + 1), datalen);
1154 break;
1155
1156 case IEEE802_1X_TYPE_EAPOL_START:
1157 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1158 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Start "
1159 "from STA");
1160 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
1161 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
1162 if (pmksa) {
1163 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
1164 HOSTAPD_LEVEL_DEBUG, "cached PMKSA "
1165 "available - ignore it since "
1166 "STA sent EAPOL-Start");
1167 wpa_auth_sta_clear_pmksa(sta->wpa_sm, pmksa);
1168 }
1169 sta->eapol_sm->eapolStart = TRUE;
1170 sta->eapol_sm->dot1xAuthEapolStartFramesRx++;
1171 eap_server_clear_identity(sta->eapol_sm->eap);
1172 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
1173 break;
1174
1175 case IEEE802_1X_TYPE_EAPOL_LOGOFF:
1176 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1177 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Logoff "
1178 "from STA");
1179 sta->acct_terminate_cause =
1180 RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1181 accounting_sta_stop(hapd, sta);
1182 sta->eapol_sm->eapolLogoff = TRUE;
1183 sta->eapol_sm->dot1xAuthEapolLogoffFramesRx++;
1184 eap_server_clear_identity(sta->eapol_sm->eap);
1185 break;
1186
1187 case IEEE802_1X_TYPE_EAPOL_KEY:
1188 wpa_printf(MSG_DEBUG, " EAPOL-Key");
1189 if (!ap_sta_is_authorized(sta)) {
1190 wpa_printf(MSG_DEBUG, " Dropped key data from "
1191 "unauthorized Supplicant");
1192 break;
1193 }
1194 break;
1195
1196 case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT:
1197 wpa_printf(MSG_DEBUG, " EAPOL-Encapsulated-ASF-Alert");
1198 /* TODO: implement support for this; show data */
1199 break;
1200
1201 #ifdef CONFIG_MACSEC
1202 case IEEE802_1X_TYPE_EAPOL_MKA:
1203 wpa_printf(MSG_EXCESSIVE,
1204 "EAPOL type %d will be handled by MKA", hdr->type);
1205 break;
1206 #endif /* CONFIG_MACSEC */
1207
1208 default:
1209 wpa_printf(MSG_DEBUG, " unknown IEEE 802.1X packet type");
1210 sta->eapol_sm->dot1xAuthInvalidEapolFramesRx++;
1211 break;
1212 }
1213
1214 eapol_auth_step(sta->eapol_sm);
1215 }
1216
1217
1218 /**
1219 * ieee802_1x_new_station - Start IEEE 802.1X authentication
1220 * @hapd: hostapd BSS data
1221 * @sta: The station
1222 *
1223 * This function is called to start IEEE 802.1X authentication when a new
1224 * station completes IEEE 802.11 association.
1225 */
1226 void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta)
1227 {
1228 struct rsn_pmksa_cache_entry *pmksa;
1229 int reassoc = 1;
1230 int force_1x = 0;
1231 int key_mgmt;
1232
1233 #ifdef CONFIG_WPS
1234 if (hapd->conf->wps_state &&
1235 ((hapd->conf->wpa && (sta->flags & WLAN_STA_MAYBE_WPS)) ||
1236 (sta->flags & WLAN_STA_WPS))) {
1237 /*
1238 * Need to enable IEEE 802.1X/EAPOL state machines for possible
1239 * WPS handshake even if IEEE 802.1X/EAPOL is not used for
1240 * authentication in this BSS.
1241 */
1242 force_1x = 1;
1243 }
1244 #endif /* CONFIG_WPS */
1245
1246 if (!force_1x && !hapd->conf->ieee802_1x && !hapd->conf->osen) {
1247 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - "
1248 "802.1X not enabled or forced for WPS");
1249 /*
1250 * Clear any possible EAPOL authenticator state to support
1251 * reassociation change from WPS to PSK.
1252 */
1253 ieee802_1x_free_station(hapd, sta);
1254 return;
1255 }
1256
1257 key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
1258 if (key_mgmt != -1 &&
1259 (wpa_key_mgmt_wpa_psk(key_mgmt) || key_mgmt == WPA_KEY_MGMT_OWE ||
1260 key_mgmt == WPA_KEY_MGMT_DPP)) {
1261 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - using PSK");
1262 /*
1263 * Clear any possible EAPOL authenticator state to support
1264 * reassociation change from WPA-EAP to PSK.
1265 */
1266 ieee802_1x_free_station(hapd, sta);
1267 return;
1268 }
1269
1270 if (sta->eapol_sm == NULL) {
1271 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1272 HOSTAPD_LEVEL_DEBUG, "start authentication");
1273 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
1274 if (sta->eapol_sm == NULL) {
1275 hostapd_logger(hapd, sta->addr,
1276 HOSTAPD_MODULE_IEEE8021X,
1277 HOSTAPD_LEVEL_INFO,
1278 "failed to allocate state machine");
1279 return;
1280 }
1281 reassoc = 0;
1282 }
1283
1284 #ifdef CONFIG_WPS
1285 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
1286 if (!hapd->conf->ieee802_1x && hapd->conf->wps_state &&
1287 !(sta->flags & WLAN_STA_WPS2)) {
1288 /*
1289 * Delay EAPOL frame transmission until a possible WPS STA
1290 * initiates the handshake with EAPOL-Start. Only allow the
1291 * wait to be skipped if the STA is known to support WPS 2.0.
1292 */
1293 wpa_printf(MSG_DEBUG, "WPS: Do not start EAPOL until "
1294 "EAPOL-Start is received");
1295 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
1296 }
1297 #endif /* CONFIG_WPS */
1298
1299 sta->eapol_sm->eap_if->portEnabled = TRUE;
1300
1301 #ifdef CONFIG_IEEE80211R_AP
1302 if (sta->auth_alg == WLAN_AUTH_FT) {
1303 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1304 HOSTAPD_LEVEL_DEBUG,
1305 "PMK from FT - skip IEEE 802.1X/EAP");
1306 /* Setup EAPOL state machines to already authenticated state
1307 * because of existing FT information from R0KH. */
1308 sta->eapol_sm->keyRun = TRUE;
1309 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1310 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1311 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1312 sta->eapol_sm->authSuccess = TRUE;
1313 sta->eapol_sm->authFail = FALSE;
1314 sta->eapol_sm->portValid = TRUE;
1315 if (sta->eapol_sm->eap)
1316 eap_sm_notify_cached(sta->eapol_sm->eap);
1317 ap_sta_bind_vlan(hapd, sta);
1318 return;
1319 }
1320 #endif /* CONFIG_IEEE80211R_AP */
1321
1322 #ifdef CONFIG_FILS
1323 if (sta->auth_alg == WLAN_AUTH_FILS_SK ||
1324 sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
1325 sta->auth_alg == WLAN_AUTH_FILS_PK) {
1326 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1327 HOSTAPD_LEVEL_DEBUG,
1328 "PMK from FILS - skip IEEE 802.1X/EAP");
1329 /* Setup EAPOL state machines to already authenticated state
1330 * because of existing FILS information. */
1331 sta->eapol_sm->keyRun = TRUE;
1332 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1333 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1334 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1335 sta->eapol_sm->authSuccess = TRUE;
1336 sta->eapol_sm->authFail = FALSE;
1337 sta->eapol_sm->portValid = TRUE;
1338 if (sta->eapol_sm->eap)
1339 eap_sm_notify_cached(sta->eapol_sm->eap);
1340 wpa_auth_set_ptk_rekey_timer(sta->wpa_sm);
1341 return;
1342 }
1343 #endif /* CONFIG_FILS */
1344
1345 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
1346 if (pmksa) {
1347 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1348 HOSTAPD_LEVEL_DEBUG,
1349 "PMK from PMKSA cache - skip IEEE 802.1X/EAP");
1350 /* Setup EAPOL state machines to already authenticated state
1351 * because of existing PMKSA information in the cache. */
1352 sta->eapol_sm->keyRun = TRUE;
1353 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1354 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1355 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1356 sta->eapol_sm->authSuccess = TRUE;
1357 sta->eapol_sm->authFail = FALSE;
1358 if (sta->eapol_sm->eap)
1359 eap_sm_notify_cached(sta->eapol_sm->eap);
1360 pmksa_cache_to_eapol_data(hapd, pmksa, sta->eapol_sm);
1361 ap_sta_bind_vlan(hapd, sta);
1362 } else {
1363 if (reassoc) {
1364 /*
1365 * Force EAPOL state machines to start
1366 * re-authentication without having to wait for the
1367 * Supplicant to send EAPOL-Start.
1368 */
1369 sta->eapol_sm->reAuthenticate = TRUE;
1370 }
1371 eapol_auth_step(sta->eapol_sm);
1372 }
1373 }
1374
1375
1376 void ieee802_1x_free_station(struct hostapd_data *hapd, struct sta_info *sta)
1377 {
1378 struct eapol_state_machine *sm = sta->eapol_sm;
1379
1380 #ifdef CONFIG_HS20
1381 eloop_cancel_timeout(ieee802_1x_wnm_notif_send, hapd, sta);
1382 #endif /* CONFIG_HS20 */
1383
1384 if (sta->pending_eapol_rx) {
1385 wpabuf_free(sta->pending_eapol_rx->buf);
1386 os_free(sta->pending_eapol_rx);
1387 sta->pending_eapol_rx = NULL;
1388 }
1389
1390 if (sm == NULL)
1391 return;
1392
1393 sta->eapol_sm = NULL;
1394
1395 #ifndef CONFIG_NO_RADIUS
1396 radius_msg_free(sm->last_recv_radius);
1397 radius_free_class(&sm->radius_class);
1398 #endif /* CONFIG_NO_RADIUS */
1399
1400 eapol_auth_free(sm);
1401 }
1402
1403
1404 #ifndef CONFIG_NO_RADIUS
1405 static void ieee802_1x_decapsulate_radius(struct hostapd_data *hapd,
1406 struct sta_info *sta)
1407 {
1408 struct wpabuf *eap;
1409 const struct eap_hdr *hdr;
1410 int eap_type = -1;
1411 char buf[64];
1412 struct radius_msg *msg;
1413 struct eapol_state_machine *sm = sta->eapol_sm;
1414
1415 if (sm == NULL || sm->last_recv_radius == NULL) {
1416 if (sm)
1417 sm->eap_if->aaaEapNoReq = TRUE;
1418 return;
1419 }
1420
1421 msg = sm->last_recv_radius;
1422
1423 eap = radius_msg_get_eap(msg);
1424 if (eap == NULL) {
1425 /* RFC 3579, Chap. 2.6.3:
1426 * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
1427 * attribute */
1428 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1429 HOSTAPD_LEVEL_WARNING, "could not extract "
1430 "EAP-Message from RADIUS message");
1431 sm->eap_if->aaaEapNoReq = TRUE;
1432 return;
1433 }
1434
1435 if (wpabuf_len(eap) < sizeof(*hdr)) {
1436 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1437 HOSTAPD_LEVEL_WARNING, "too short EAP packet "
1438 "received from authentication server");
1439 wpabuf_free(eap);
1440 sm->eap_if->aaaEapNoReq = TRUE;
1441 return;
1442 }
1443
1444 if (wpabuf_len(eap) > sizeof(*hdr))
1445 eap_type = (wpabuf_head_u8(eap))[sizeof(*hdr)];
1446
1447 hdr = wpabuf_head(eap);
1448 switch (hdr->code) {
1449 case EAP_CODE_REQUEST:
1450 if (eap_type >= 0)
1451 sm->eap_type_authsrv = eap_type;
1452 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
1453 eap_server_get_name(0, eap_type), eap_type);
1454 break;
1455 case EAP_CODE_RESPONSE:
1456 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
1457 eap_server_get_name(0, eap_type), eap_type);
1458 break;
1459 case EAP_CODE_SUCCESS:
1460 os_strlcpy(buf, "EAP Success", sizeof(buf));
1461 break;
1462 case EAP_CODE_FAILURE:
1463 os_strlcpy(buf, "EAP Failure", sizeof(buf));
1464 break;
1465 default:
1466 os_strlcpy(buf, "unknown EAP code", sizeof(buf));
1467 break;
1468 }
1469 buf[sizeof(buf) - 1] = '\0';
1470 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1471 HOSTAPD_LEVEL_DEBUG, "decapsulated EAP packet (code=%d "
1472 "id=%d len=%d) from RADIUS server: %s",
1473 hdr->code, hdr->identifier, be_to_host16(hdr->length),
1474 buf);
1475 sm->eap_if->aaaEapReq = TRUE;
1476
1477 wpabuf_free(sm->eap_if->aaaEapReqData);
1478 sm->eap_if->aaaEapReqData = eap;
1479 }
1480
1481
1482 static void ieee802_1x_get_keys(struct hostapd_data *hapd,
1483 struct sta_info *sta, struct radius_msg *msg,
1484 struct radius_msg *req,
1485 const u8 *shared_secret,
1486 size_t shared_secret_len)
1487 {
1488 struct radius_ms_mppe_keys *keys;
1489 u8 *buf;
1490 size_t len;
1491 struct eapol_state_machine *sm = sta->eapol_sm;
1492 if (sm == NULL)
1493 return;
1494
1495 keys = radius_msg_get_ms_keys(msg, req, shared_secret,
1496 shared_secret_len);
1497
1498 if (keys && keys->send && keys->recv) {
1499 len = keys->send_len + keys->recv_len;
1500 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Send-Key",
1501 keys->send, keys->send_len);
1502 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Recv-Key",
1503 keys->recv, keys->recv_len);
1504
1505 os_free(sm->eap_if->aaaEapKeyData);
1506 sm->eap_if->aaaEapKeyData = os_malloc(len);
1507 if (sm->eap_if->aaaEapKeyData) {
1508 os_memcpy(sm->eap_if->aaaEapKeyData, keys->recv,
1509 keys->recv_len);
1510 os_memcpy(sm->eap_if->aaaEapKeyData + keys->recv_len,
1511 keys->send, keys->send_len);
1512 sm->eap_if->aaaEapKeyDataLen = len;
1513 sm->eap_if->aaaEapKeyAvailable = TRUE;
1514 }
1515 } else {
1516 wpa_printf(MSG_DEBUG,
1517 "MS-MPPE: 1x_get_keys, could not get keys: %p send: %p recv: %p",
1518 keys, keys ? keys->send : NULL,
1519 keys ? keys->recv : NULL);
1520 }
1521
1522 if (keys) {
1523 os_free(keys->send);
1524 os_free(keys->recv);
1525 os_free(keys);
1526 }
1527
1528 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_EAP_KEY_NAME, &buf, &len,
1529 NULL) == 0) {
1530 os_free(sm->eap_if->eapSessionId);
1531 sm->eap_if->eapSessionId = os_memdup(buf, len);
1532 if (sm->eap_if->eapSessionId) {
1533 sm->eap_if->eapSessionIdLen = len;
1534 wpa_hexdump(MSG_DEBUG, "EAP-Key Name",
1535 sm->eap_if->eapSessionId,
1536 sm->eap_if->eapSessionIdLen);
1537 }
1538 } else {
1539 sm->eap_if->eapSessionIdLen = 0;
1540 }
1541 }
1542
1543
1544 static void ieee802_1x_store_radius_class(struct hostapd_data *hapd,
1545 struct sta_info *sta,
1546 struct radius_msg *msg)
1547 {
1548 u8 *attr_class;
1549 size_t class_len;
1550 struct eapol_state_machine *sm = sta->eapol_sm;
1551 int count, i;
1552 struct radius_attr_data *nclass;
1553 size_t nclass_count;
1554
1555 if (!hapd->conf->radius->acct_server || hapd->radius == NULL ||
1556 sm == NULL)
1557 return;
1558
1559 radius_free_class(&sm->radius_class);
1560 count = radius_msg_count_attr(msg, RADIUS_ATTR_CLASS, 1);
1561 if (count <= 0)
1562 return;
1563
1564 nclass = os_calloc(count, sizeof(struct radius_attr_data));
1565 if (nclass == NULL)
1566 return;
1567
1568 nclass_count = 0;
1569
1570 attr_class = NULL;
1571 for (i = 0; i < count; i++) {
1572 do {
1573 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CLASS,
1574 &attr_class, &class_len,
1575 attr_class) < 0) {
1576 i = count;
1577 break;
1578 }
1579 } while (class_len < 1);
1580
1581 nclass[nclass_count].data = os_memdup(attr_class, class_len);
1582 if (nclass[nclass_count].data == NULL)
1583 break;
1584
1585 nclass[nclass_count].len = class_len;
1586 nclass_count++;
1587 }
1588
1589 sm->radius_class.attr = nclass;
1590 sm->radius_class.count = nclass_count;
1591 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Stored %lu RADIUS Class "
1592 "attributes for " MACSTR,
1593 (unsigned long) sm->radius_class.count,
1594 MAC2STR(sta->addr));
1595 }
1596
1597
1598 /* Update sta->identity based on User-Name attribute in Access-Accept */
1599 static void ieee802_1x_update_sta_identity(struct hostapd_data *hapd,
1600 struct sta_info *sta,
1601 struct radius_msg *msg)
1602 {
1603 u8 *buf, *identity;
1604 size_t len;
1605 struct eapol_state_machine *sm = sta->eapol_sm;
1606
1607 if (sm == NULL)
1608 return;
1609
1610 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &buf, &len,
1611 NULL) < 0)
1612 return;
1613
1614 identity = (u8 *) dup_binstr(buf, len);
1615 if (identity == NULL)
1616 return;
1617
1618 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1619 HOSTAPD_LEVEL_DEBUG, "old identity '%s' updated with "
1620 "User-Name from Access-Accept '%s'",
1621 sm->identity ? (char *) sm->identity : "N/A",
1622 (char *) identity);
1623
1624 os_free(sm->identity);
1625 sm->identity = identity;
1626 sm->identity_len = len;
1627 }
1628
1629
1630 /* Update CUI based on Chargeable-User-Identity attribute in Access-Accept */
1631 static void ieee802_1x_update_sta_cui(struct hostapd_data *hapd,
1632 struct sta_info *sta,
1633 struct radius_msg *msg)
1634 {
1635 struct eapol_state_machine *sm = sta->eapol_sm;
1636 struct wpabuf *cui;
1637 u8 *buf;
1638 size_t len;
1639
1640 if (sm == NULL)
1641 return;
1642
1643 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
1644 &buf, &len, NULL) < 0)
1645 return;
1646
1647 cui = wpabuf_alloc_copy(buf, len);
1648 if (cui == NULL)
1649 return;
1650
1651 wpabuf_free(sm->radius_cui);
1652 sm->radius_cui = cui;
1653 }
1654
1655
1656 #ifdef CONFIG_HS20
1657
1658 static void ieee802_1x_hs20_sub_rem(struct sta_info *sta, u8 *pos, size_t len)
1659 {
1660 sta->remediation = 1;
1661 os_free(sta->remediation_url);
1662 if (len > 2) {
1663 sta->remediation_url = os_malloc(len);
1664 if (!sta->remediation_url)
1665 return;
1666 sta->remediation_method = pos[0];
1667 os_memcpy(sta->remediation_url, pos + 1, len - 1);
1668 sta->remediation_url[len - 1] = '\0';
1669 wpa_printf(MSG_DEBUG, "HS 2.0: Subscription remediation needed "
1670 "for " MACSTR " - server method %u URL %s",
1671 MAC2STR(sta->addr), sta->remediation_method,
1672 sta->remediation_url);
1673 } else {
1674 sta->remediation_url = NULL;
1675 wpa_printf(MSG_DEBUG, "HS 2.0: Subscription remediation needed "
1676 "for " MACSTR, MAC2STR(sta->addr));
1677 }
1678 /* TODO: assign the STA into remediation VLAN or add filtering */
1679 }
1680
1681
1682 static void ieee802_1x_hs20_deauth_req(struct hostapd_data *hapd,
1683 struct sta_info *sta, u8 *pos,
1684 size_t len)
1685 {
1686 if (len < 3)
1687 return; /* Malformed information */
1688 sta->hs20_deauth_requested = 1;
1689 wpa_printf(MSG_DEBUG, "HS 2.0: Deauthentication request - Code %u "
1690 "Re-auth Delay %u",
1691 *pos, WPA_GET_LE16(pos + 1));
1692 wpabuf_free(sta->hs20_deauth_req);
1693 sta->hs20_deauth_req = wpabuf_alloc(len + 1);
1694 if (sta->hs20_deauth_req) {
1695 wpabuf_put_data(sta->hs20_deauth_req, pos, 3);
1696 wpabuf_put_u8(sta->hs20_deauth_req, len - 3);
1697 wpabuf_put_data(sta->hs20_deauth_req, pos + 3, len - 3);
1698 }
1699 ap_sta_session_timeout(hapd, sta, hapd->conf->hs20_deauth_req_timeout);
1700 }
1701
1702
1703 static void ieee802_1x_hs20_session_info(struct hostapd_data *hapd,
1704 struct sta_info *sta, u8 *pos,
1705 size_t len, int session_timeout)
1706 {
1707 unsigned int swt;
1708 int warning_time, beacon_int;
1709
1710 if (len < 1)
1711 return; /* Malformed information */
1712 os_free(sta->hs20_session_info_url);
1713 sta->hs20_session_info_url = os_malloc(len);
1714 if (sta->hs20_session_info_url == NULL)
1715 return;
1716 swt = pos[0];
1717 os_memcpy(sta->hs20_session_info_url, pos + 1, len - 1);
1718 sta->hs20_session_info_url[len - 1] = '\0';
1719 wpa_printf(MSG_DEBUG, "HS 2.0: Session Information URL='%s' SWT=%u "
1720 "(session_timeout=%d)",
1721 sta->hs20_session_info_url, swt, session_timeout);
1722 if (session_timeout < 0) {
1723 wpa_printf(MSG_DEBUG, "HS 2.0: No Session-Timeout set - ignore session info URL");
1724 return;
1725 }
1726 if (swt == 255)
1727 swt = 1; /* Use one minute as the AP selected value */
1728
1729 if ((unsigned int) session_timeout < swt * 60)
1730 warning_time = 0;
1731 else
1732 warning_time = session_timeout - swt * 60;
1733
1734 beacon_int = hapd->iconf->beacon_int;
1735 if (beacon_int < 1)
1736 beacon_int = 100; /* best guess */
1737 sta->hs20_disassoc_timer = swt * 60 * 1000 / beacon_int * 125 / 128;
1738 if (sta->hs20_disassoc_timer > 65535)
1739 sta->hs20_disassoc_timer = 65535;
1740
1741 ap_sta_session_warning_timeout(hapd, sta, warning_time);
1742 }
1743
1744
1745 static void ieee802_1x_hs20_t_c_filtering(struct hostapd_data *hapd,
1746 struct sta_info *sta, u8 *pos,
1747 size_t len)
1748 {
1749 if (len < 4)
1750 return; /* Malformed information */
1751 wpa_printf(MSG_DEBUG,
1752 "HS 2.0: Terms and Conditions filtering %02x %02x %02x %02x",
1753 pos[0], pos[1], pos[2], pos[3]);
1754 hs20_t_c_filtering(hapd, sta, pos[0] & BIT(0));
1755 }
1756
1757
1758 static void ieee802_1x_hs20_t_c_url(struct hostapd_data *hapd,
1759 struct sta_info *sta, u8 *pos, size_t len)
1760 {
1761 os_free(sta->t_c_url);
1762 sta->t_c_url = os_malloc(len + 1);
1763 if (!sta->t_c_url)
1764 return;
1765 os_memcpy(sta->t_c_url, pos, len);
1766 sta->t_c_url[len] = '\0';
1767 wpa_printf(MSG_DEBUG,
1768 "HS 2.0: Terms and Conditions URL %s", sta->t_c_url);
1769 }
1770
1771 #endif /* CONFIG_HS20 */
1772
1773
1774 static void ieee802_1x_check_hs20(struct hostapd_data *hapd,
1775 struct sta_info *sta,
1776 struct radius_msg *msg,
1777 int session_timeout)
1778 {
1779 #ifdef CONFIG_HS20
1780 u8 *buf, *pos, *end, type, sublen;
1781 size_t len;
1782
1783 buf = NULL;
1784 sta->remediation = 0;
1785 sta->hs20_deauth_requested = 0;
1786
1787 for (;;) {
1788 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_VENDOR_SPECIFIC,
1789 &buf, &len, buf) < 0)
1790 break;
1791 if (len < 6)
1792 continue;
1793 pos = buf;
1794 end = buf + len;
1795 if (WPA_GET_BE32(pos) != RADIUS_VENDOR_ID_WFA)
1796 continue;
1797 pos += 4;
1798
1799 type = *pos++;
1800 sublen = *pos++;
1801 if (sublen < 2)
1802 continue; /* invalid length */
1803 sublen -= 2; /* skip header */
1804 if (pos + sublen > end)
1805 continue; /* invalid WFA VSA */
1806
1807 switch (type) {
1808 case RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION:
1809 ieee802_1x_hs20_sub_rem(sta, pos, sublen);
1810 break;
1811 case RADIUS_VENDOR_ATTR_WFA_HS20_DEAUTH_REQ:
1812 ieee802_1x_hs20_deauth_req(hapd, sta, pos, sublen);
1813 break;
1814 case RADIUS_VENDOR_ATTR_WFA_HS20_SESSION_INFO_URL:
1815 ieee802_1x_hs20_session_info(hapd, sta, pos, sublen,
1816 session_timeout);
1817 break;
1818 case RADIUS_VENDOR_ATTR_WFA_HS20_T_C_FILTERING:
1819 ieee802_1x_hs20_t_c_filtering(hapd, sta, pos, sublen);
1820 break;
1821 case RADIUS_VENDOR_ATTR_WFA_HS20_T_C_URL:
1822 ieee802_1x_hs20_t_c_url(hapd, sta, pos, sublen);
1823 break;
1824 }
1825 }
1826 #endif /* CONFIG_HS20 */
1827 }
1828
1829
1830 struct sta_id_search {
1831 u8 identifier;
1832 struct eapol_state_machine *sm;
1833 };
1834
1835
1836 static int ieee802_1x_select_radius_identifier(struct hostapd_data *hapd,
1837 struct sta_info *sta,
1838 void *ctx)
1839 {
1840 struct sta_id_search *id_search = ctx;
1841 struct eapol_state_machine *sm = sta->eapol_sm;
1842
1843 if (sm && sm->radius_identifier >= 0 &&
1844 sm->radius_identifier == id_search->identifier) {
1845 id_search->sm = sm;
1846 return 1;
1847 }
1848 return 0;
1849 }
1850
1851
1852 static struct eapol_state_machine *
1853 ieee802_1x_search_radius_identifier(struct hostapd_data *hapd, u8 identifier)
1854 {
1855 struct sta_id_search id_search;
1856 id_search.identifier = identifier;
1857 id_search.sm = NULL;
1858 ap_for_each_sta(hapd, ieee802_1x_select_radius_identifier, &id_search);
1859 return id_search.sm;
1860 }
1861
1862
1863 #ifndef CONFIG_NO_VLAN
1864 static int ieee802_1x_update_vlan(struct radius_msg *msg,
1865 struct hostapd_data *hapd,
1866 struct sta_info *sta)
1867 {
1868 struct vlan_description vlan_desc;
1869
1870 os_memset(&vlan_desc, 0, sizeof(vlan_desc));
1871 vlan_desc.notempty = !!radius_msg_get_vlanid(msg, &vlan_desc.untagged,
1872 MAX_NUM_TAGGED_VLAN,
1873 vlan_desc.tagged);
1874
1875 if (vlan_desc.notempty &&
1876 !hostapd_vlan_valid(hapd->conf->vlan, &vlan_desc)) {
1877 sta->eapol_sm->authFail = TRUE;
1878 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
1879 HOSTAPD_LEVEL_INFO,
1880 "Invalid VLAN %d%s received from RADIUS server",
1881 vlan_desc.untagged,
1882 vlan_desc.tagged[0] ? "+" : "");
1883 os_memset(&vlan_desc, 0, sizeof(vlan_desc));
1884 ap_sta_set_vlan(hapd, sta, &vlan_desc);
1885 return -1;
1886 }
1887
1888 if (hapd->conf->ssid.dynamic_vlan == DYNAMIC_VLAN_REQUIRED &&
1889 !vlan_desc.notempty) {
1890 sta->eapol_sm->authFail = TRUE;
1891 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1892 HOSTAPD_LEVEL_INFO,
1893 "authentication server did not include required VLAN ID in Access-Accept");
1894 return -1;
1895 }
1896
1897 return ap_sta_set_vlan(hapd, sta, &vlan_desc);
1898 }
1899 #endif /* CONFIG_NO_VLAN */
1900
1901
1902 /**
1903 * ieee802_1x_receive_auth - Process RADIUS frames from Authentication Server
1904 * @msg: RADIUS response message
1905 * @req: RADIUS request message
1906 * @shared_secret: RADIUS shared secret
1907 * @shared_secret_len: Length of shared_secret in octets
1908 * @data: Context data (struct hostapd_data *)
1909 * Returns: Processing status
1910 */
1911 static RadiusRxResult
1912 ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
1913 const u8 *shared_secret, size_t shared_secret_len,
1914 void *data)
1915 {
1916 struct hostapd_data *hapd = data;
1917 struct sta_info *sta;
1918 u32 session_timeout = 0, termination_action, acct_interim_interval;
1919 int session_timeout_set;
1920 u32 reason_code;
1921 struct eapol_state_machine *sm;
1922 int override_eapReq = 0;
1923 struct radius_hdr *hdr = radius_msg_get_hdr(msg);
1924
1925 sm = ieee802_1x_search_radius_identifier(hapd, hdr->identifier);
1926 if (sm == NULL) {
1927 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Could not find matching "
1928 "station for this RADIUS message");
1929 return RADIUS_RX_UNKNOWN;
1930 }
1931 sta = sm->sta;
1932
1933 /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
1934 * present when packet contains an EAP-Message attribute */
1935 if (hdr->code == RADIUS_CODE_ACCESS_REJECT &&
1936 radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
1937 0) < 0 &&
1938 radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
1939 wpa_printf(MSG_DEBUG, "Allowing RADIUS Access-Reject without "
1940 "Message-Authenticator since it does not include "
1941 "EAP-Message");
1942 } else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
1943 req, 1)) {
1944 wpa_printf(MSG_INFO, "Incoming RADIUS packet did not have correct Message-Authenticator - dropped");
1945 return RADIUS_RX_INVALID_AUTHENTICATOR;
1946 }
1947
1948 if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
1949 hdr->code != RADIUS_CODE_ACCESS_REJECT &&
1950 hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
1951 wpa_printf(MSG_INFO, "Unknown RADIUS message code");
1952 return RADIUS_RX_UNKNOWN;
1953 }
1954
1955 sm->radius_identifier = -1;
1956 wpa_printf(MSG_DEBUG, "RADIUS packet matching with station " MACSTR,
1957 MAC2STR(sta->addr));
1958
1959 radius_msg_free(sm->last_recv_radius);
1960 sm->last_recv_radius = msg;
1961
1962 session_timeout_set =
1963 !radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
1964 &session_timeout);
1965 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_TERMINATION_ACTION,
1966 &termination_action))
1967 termination_action = RADIUS_TERMINATION_ACTION_DEFAULT;
1968
1969 if (hapd->conf->acct_interim_interval == 0 &&
1970 hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
1971 radius_msg_get_attr_int32(msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
1972 &acct_interim_interval) == 0) {
1973 if (acct_interim_interval < 60) {
1974 hostapd_logger(hapd, sta->addr,
1975 HOSTAPD_MODULE_IEEE8021X,
1976 HOSTAPD_LEVEL_INFO,
1977 "ignored too small "
1978 "Acct-Interim-Interval %d",
1979 acct_interim_interval);
1980 } else
1981 sta->acct_interim_interval = acct_interim_interval;
1982 }
1983
1984
1985 switch (hdr->code) {
1986 case RADIUS_CODE_ACCESS_ACCEPT:
1987 #ifndef CONFIG_NO_VLAN
1988 if (hapd->conf->ssid.dynamic_vlan != DYNAMIC_VLAN_DISABLED &&
1989 ieee802_1x_update_vlan(msg, hapd, sta) < 0)
1990 break;
1991
1992 if (sta->vlan_id > 0) {
1993 hostapd_logger(hapd, sta->addr,
1994 HOSTAPD_MODULE_RADIUS,
1995 HOSTAPD_LEVEL_INFO,
1996 "VLAN ID %d", sta->vlan_id);
1997 }
1998
1999 if ((sta->flags & WLAN_STA_ASSOC) &&
2000 ap_sta_bind_vlan(hapd, sta) < 0)
2001 break;
2002 #endif /* CONFIG_NO_VLAN */
2003
2004 sta->session_timeout_set = !!session_timeout_set;
2005 os_get_reltime(&sta->session_timeout);
2006 sta->session_timeout.sec += session_timeout;
2007
2008 /* RFC 3580, Ch. 3.17 */
2009 if (session_timeout_set && termination_action ==
2010 RADIUS_TERMINATION_ACTION_RADIUS_REQUEST)
2011 sm->reAuthPeriod = session_timeout;
2012 else if (session_timeout_set)
2013 ap_sta_session_timeout(hapd, sta, session_timeout);
2014 else
2015 ap_sta_no_session_timeout(hapd, sta);
2016
2017 sm->eap_if->aaaSuccess = TRUE;
2018 override_eapReq = 1;
2019 ieee802_1x_get_keys(hapd, sta, msg, req, shared_secret,
2020 shared_secret_len);
2021 ieee802_1x_store_radius_class(hapd, sta, msg);
2022 ieee802_1x_update_sta_identity(hapd, sta, msg);
2023 ieee802_1x_update_sta_cui(hapd, sta, msg);
2024 ieee802_1x_check_hs20(hapd, sta, msg,
2025 session_timeout_set ?
2026 (int) session_timeout : -1);
2027 break;
2028 case RADIUS_CODE_ACCESS_REJECT:
2029 sm->eap_if->aaaFail = TRUE;
2030 override_eapReq = 1;
2031 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_WLAN_REASON_CODE,
2032 &reason_code) == 0) {
2033 wpa_printf(MSG_DEBUG,
2034 "RADIUS server indicated WLAN-Reason-Code %u in Access-Reject for "
2035 MACSTR, reason_code, MAC2STR(sta->addr));
2036 sta->disconnect_reason_code = reason_code;
2037 }
2038 break;
2039 case RADIUS_CODE_ACCESS_CHALLENGE:
2040 sm->eap_if->aaaEapReq = TRUE;
2041 if (session_timeout_set) {
2042 /* RFC 2869, Ch. 2.3.2; RFC 3580, Ch. 3.17 */
2043 sm->eap_if->aaaMethodTimeout = session_timeout;
2044 hostapd_logger(hapd, sm->addr,
2045 HOSTAPD_MODULE_IEEE8021X,
2046 HOSTAPD_LEVEL_DEBUG,
2047 "using EAP timeout of %d seconds (from "
2048 "RADIUS)",
2049 sm->eap_if->aaaMethodTimeout);
2050 } else {
2051 /*
2052 * Use dynamic retransmission behavior per EAP
2053 * specification.
2054 */
2055 sm->eap_if->aaaMethodTimeout = 0;
2056 }
2057 break;
2058 }
2059
2060 ieee802_1x_decapsulate_radius(hapd, sta);
2061 if (override_eapReq)
2062 sm->eap_if->aaaEapReq = FALSE;
2063
2064 #ifdef CONFIG_FILS
2065 #ifdef NEED_AP_MLME
2066 if (sta->flags & WLAN_STA_PENDING_FILS_ERP) {
2067 /* TODO: Add a PMKSA entry on success? */
2068 ieee802_11_finish_fils_auth(
2069 hapd, sta, hdr->code == RADIUS_CODE_ACCESS_ACCEPT,
2070 sm->eap_if->aaaEapReqData,
2071 sm->eap_if->aaaEapKeyData,
2072 sm->eap_if->aaaEapKeyDataLen);
2073 }
2074 #endif /* NEED_AP_MLME */
2075 #endif /* CONFIG_FILS */
2076
2077 eapol_auth_step(sm);
2078
2079 return RADIUS_RX_QUEUED;
2080 }
2081 #endif /* CONFIG_NO_RADIUS */
2082
2083
2084 void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta)
2085 {
2086 struct eapol_state_machine *sm = sta->eapol_sm;
2087 if (sm == NULL)
2088 return;
2089
2090 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
2091 HOSTAPD_LEVEL_DEBUG, "aborting authentication");
2092
2093 #ifndef CONFIG_NO_RADIUS
2094 radius_msg_free(sm->last_recv_radius);
2095 sm->last_recv_radius = NULL;
2096 #endif /* CONFIG_NO_RADIUS */
2097
2098 if (sm->eap_if->eapTimeout) {
2099 /*
2100 * Disconnect the STA since it did not reply to the last EAP
2101 * request and we cannot continue EAP processing (EAP-Failure
2102 * could only be sent if the EAP peer actually replied).
2103 */
2104 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "EAP Timeout, STA " MACSTR,
2105 MAC2STR(sta->addr));
2106
2107 sm->eap_if->portEnabled = FALSE;
2108 ap_sta_disconnect(hapd, sta, sta->addr,
2109 WLAN_REASON_PREV_AUTH_NOT_VALID);
2110 }
2111 }
2112
2113
2114 static int ieee802_1x_rekey_broadcast(struct hostapd_data *hapd)
2115 {
2116 struct eapol_authenticator *eapol = hapd->eapol_auth;
2117
2118 if (hapd->conf->default_wep_key_len < 1)
2119 return 0;
2120
2121 os_free(eapol->default_wep_key);
2122 eapol->default_wep_key = os_malloc(hapd->conf->default_wep_key_len);
2123 if (eapol->default_wep_key == NULL ||
2124 random_get_bytes(eapol->default_wep_key,
2125 hapd->conf->default_wep_key_len)) {
2126 wpa_printf(MSG_INFO, "Could not generate random WEP key");
2127 os_free(eapol->default_wep_key);
2128 eapol->default_wep_key = NULL;
2129 return -1;
2130 }
2131
2132 wpa_hexdump_key(MSG_DEBUG, "IEEE 802.1X: New default WEP key",
2133 eapol->default_wep_key,
2134 hapd->conf->default_wep_key_len);
2135
2136 return 0;
2137 }
2138
2139
2140 static int ieee802_1x_sta_key_available(struct hostapd_data *hapd,
2141 struct sta_info *sta, void *ctx)
2142 {
2143 if (sta->eapol_sm) {
2144 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
2145 eapol_auth_step(sta->eapol_sm);
2146 }
2147 return 0;
2148 }
2149
2150
2151 static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx)
2152 {
2153 struct hostapd_data *hapd = eloop_ctx;
2154 struct eapol_authenticator *eapol = hapd->eapol_auth;
2155
2156 if (eapol->default_wep_key_idx >= 3)
2157 eapol->default_wep_key_idx =
2158 hapd->conf->individual_wep_key_len > 0 ? 1 : 0;
2159 else
2160 eapol->default_wep_key_idx++;
2161
2162 wpa_printf(MSG_DEBUG, "IEEE 802.1X: New default WEP key index %d",
2163 eapol->default_wep_key_idx);
2164
2165 if (ieee802_1x_rekey_broadcast(hapd)) {
2166 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
2167 HOSTAPD_LEVEL_WARNING, "failed to generate a "
2168 "new broadcast key");
2169 os_free(eapol->default_wep_key);
2170 eapol->default_wep_key = NULL;
2171 return;
2172 }
2173
2174 /* TODO: Could setup key for RX here, but change default TX keyid only
2175 * after new broadcast key has been sent to all stations. */
2176 if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
2177 broadcast_ether_addr,
2178 eapol->default_wep_key_idx, 1, NULL, 0,
2179 eapol->default_wep_key,
2180 hapd->conf->default_wep_key_len)) {
2181 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
2182 HOSTAPD_LEVEL_WARNING, "failed to configure a "
2183 "new broadcast key");
2184 os_free(eapol->default_wep_key);
2185 eapol->default_wep_key = NULL;
2186 return;
2187 }
2188
2189 ap_for_each_sta(hapd, ieee802_1x_sta_key_available, NULL);
2190
2191 if (hapd->conf->wep_rekeying_period > 0) {
2192 eloop_register_timeout(hapd->conf->wep_rekeying_period, 0,
2193 ieee802_1x_rekey, hapd, NULL);
2194 }
2195 }
2196
2197
2198 static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type,
2199 const u8 *data, size_t datalen)
2200 {
2201 #ifdef CONFIG_WPS
2202 struct sta_info *sta = sta_ctx;
2203
2204 if ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) ==
2205 WLAN_STA_MAYBE_WPS) {
2206 const u8 *identity;
2207 size_t identity_len;
2208 struct eapol_state_machine *sm = sta->eapol_sm;
2209
2210 identity = eap_get_identity(sm->eap, &identity_len);
2211 if (identity &&
2212 ((identity_len == WSC_ID_ENROLLEE_LEN &&
2213 os_memcmp(identity, WSC_ID_ENROLLEE,
2214 WSC_ID_ENROLLEE_LEN) == 0) ||
2215 (identity_len == WSC_ID_REGISTRAR_LEN &&
2216 os_memcmp(identity, WSC_ID_REGISTRAR,
2217 WSC_ID_REGISTRAR_LEN) == 0))) {
2218 wpa_printf(MSG_DEBUG, "WPS: WLAN_STA_MAYBE_WPS -> "
2219 "WLAN_STA_WPS");
2220 sta->flags |= WLAN_STA_WPS;
2221 }
2222 }
2223 #endif /* CONFIG_WPS */
2224
2225 ieee802_1x_send(ctx, sta_ctx, type, data, datalen);
2226 }
2227
2228
2229 static void ieee802_1x_aaa_send(void *ctx, void *sta_ctx,
2230 const u8 *data, size_t datalen)
2231 {
2232 #ifndef CONFIG_NO_RADIUS
2233 struct hostapd_data *hapd = ctx;
2234 struct sta_info *sta = sta_ctx;
2235
2236 ieee802_1x_encapsulate_radius(hapd, sta, data, datalen);
2237 #endif /* CONFIG_NO_RADIUS */
2238 }
2239
2240
2241 static void _ieee802_1x_finished(void *ctx, void *sta_ctx, int success,
2242 int preauth, int remediation)
2243 {
2244 struct hostapd_data *hapd = ctx;
2245 struct sta_info *sta = sta_ctx;
2246 if (preauth)
2247 rsn_preauth_finished(hapd, sta, success);
2248 else
2249 ieee802_1x_finished(hapd, sta, success, remediation);
2250 }
2251
2252
2253 static int ieee802_1x_get_eap_user(void *ctx, const u8 *identity,
2254 size_t identity_len, int phase2,
2255 struct eap_user *user)
2256 {
2257 struct hostapd_data *hapd = ctx;
2258 const struct hostapd_eap_user *eap_user;
2259 int i;
2260 int rv = -1;
2261
2262 eap_user = hostapd_get_eap_user(hapd, identity, identity_len, phase2);
2263 if (eap_user == NULL)
2264 goto out;
2265
2266 os_memset(user, 0, sizeof(*user));
2267 user->phase2 = phase2;
2268 for (i = 0; i < EAP_MAX_METHODS; i++) {
2269 user->methods[i].vendor = eap_user->methods[i].vendor;
2270 user->methods[i].method = eap_user->methods[i].method;
2271 }
2272
2273 if (eap_user->password) {
2274 user->password = os_memdup(eap_user->password,
2275 eap_user->password_len);
2276 if (user->password == NULL)
2277 goto out;
2278 user->password_len = eap_user->password_len;
2279 user->password_hash = eap_user->password_hash;
2280 if (eap_user->salt && eap_user->salt_len) {
2281 user->salt = os_memdup(eap_user->salt,
2282 eap_user->salt_len);
2283 if (!user->salt)
2284 goto out;
2285 user->salt_len = eap_user->salt_len;
2286 }
2287 }
2288 user->force_version = eap_user->force_version;
2289 user->macacl = eap_user->macacl;
2290 user->ttls_auth = eap_user->ttls_auth;
2291 user->remediation = eap_user->remediation;
2292 rv = 0;
2293
2294 out:
2295 if (rv)
2296 wpa_printf(MSG_DEBUG, "%s: Failed to find user", __func__);
2297
2298 return rv;
2299 }
2300
2301
2302 static int ieee802_1x_sta_entry_alive(void *ctx, const u8 *addr)
2303 {
2304 struct hostapd_data *hapd = ctx;
2305 struct sta_info *sta;
2306 sta = ap_get_sta(hapd, addr);
2307 if (sta == NULL || sta->eapol_sm == NULL)
2308 return 0;
2309 return 1;
2310 }
2311
2312
2313 static void ieee802_1x_logger(void *ctx, const u8 *addr,
2314 eapol_logger_level level, const char *txt)
2315 {
2316 #ifndef CONFIG_NO_HOSTAPD_LOGGER
2317 struct hostapd_data *hapd = ctx;
2318 int hlevel;
2319
2320 switch (level) {
2321 case EAPOL_LOGGER_WARNING:
2322 hlevel = HOSTAPD_LEVEL_WARNING;
2323 break;
2324 case EAPOL_LOGGER_INFO:
2325 hlevel = HOSTAPD_LEVEL_INFO;
2326 break;
2327 case EAPOL_LOGGER_DEBUG:
2328 default:
2329 hlevel = HOSTAPD_LEVEL_DEBUG;
2330 break;
2331 }
2332
2333 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE8021X, hlevel, "%s",
2334 txt);
2335 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
2336 }
2337
2338
2339 static void ieee802_1x_set_port_authorized(void *ctx, void *sta_ctx,
2340 int authorized)
2341 {
2342 struct hostapd_data *hapd = ctx;
2343 struct sta_info *sta = sta_ctx;
2344 ieee802_1x_set_sta_authorized(hapd, sta, authorized);
2345 }
2346
2347
2348 static void _ieee802_1x_abort_auth(void *ctx, void *sta_ctx)
2349 {
2350 struct hostapd_data *hapd = ctx;
2351 struct sta_info *sta = sta_ctx;
2352 ieee802_1x_abort_auth(hapd, sta);
2353 }
2354
2355
2356 static void _ieee802_1x_tx_key(void *ctx, void *sta_ctx)
2357 {
2358 #ifndef CONFIG_FIPS
2359 #ifndef CONFIG_NO_RC4
2360 struct hostapd_data *hapd = ctx;
2361 struct sta_info *sta = sta_ctx;
2362 ieee802_1x_tx_key(hapd, sta);
2363 #endif /* CONFIG_NO_RC4 */
2364 #endif /* CONFIG_FIPS */
2365 }
2366
2367
2368 static void ieee802_1x_eapol_event(void *ctx, void *sta_ctx,
2369 enum eapol_event type)
2370 {
2371 /* struct hostapd_data *hapd = ctx; */
2372 struct sta_info *sta = sta_ctx;
2373 switch (type) {
2374 case EAPOL_AUTH_SM_CHANGE:
2375 wpa_auth_sm_notify(sta->wpa_sm);
2376 break;
2377 case EAPOL_AUTH_REAUTHENTICATE:
2378 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
2379 break;
2380 }
2381 }
2382
2383
2384 #ifdef CONFIG_ERP
2385
2386 static struct eap_server_erp_key *
2387 ieee802_1x_erp_get_key(void *ctx, const char *keyname)
2388 {
2389 struct hostapd_data *hapd = ctx;
2390 struct eap_server_erp_key *erp;
2391
2392 dl_list_for_each(erp, &hapd->erp_keys, struct eap_server_erp_key,
2393 list) {
2394 if (os_strcmp(erp->keyname_nai, keyname) == 0)
2395 return erp;
2396 }
2397
2398 return NULL;
2399 }
2400
2401
2402 static int ieee802_1x_erp_add_key(void *ctx, struct eap_server_erp_key *erp)
2403 {
2404 struct hostapd_data *hapd = ctx;
2405
2406 dl_list_add(&hapd->erp_keys, &erp->list);
2407 return 0;
2408 }
2409
2410 #endif /* CONFIG_ERP */
2411
2412
2413 int ieee802_1x_init(struct hostapd_data *hapd)
2414 {
2415 int i;
2416 struct eapol_auth_config conf;
2417 struct eapol_auth_cb cb;
2418
2419 dl_list_init(&hapd->erp_keys);
2420
2421 os_memset(&conf, 0, sizeof(conf));
2422 conf.eap_cfg = hapd->eap_cfg;
2423 conf.ctx = hapd;
2424 conf.eap_reauth_period = hapd->conf->eap_reauth_period;
2425 conf.wpa = hapd->conf->wpa;
2426 conf.individual_wep_key_len = hapd->conf->individual_wep_key_len;
2427 conf.eap_req_id_text = hapd->conf->eap_req_id_text;
2428 conf.eap_req_id_text_len = hapd->conf->eap_req_id_text_len;
2429 conf.erp_send_reauth_start = hapd->conf->erp_send_reauth_start;
2430 conf.erp_domain = hapd->conf->erp_domain;
2431
2432 os_memset(&cb, 0, sizeof(cb));
2433 cb.eapol_send = ieee802_1x_eapol_send;
2434 cb.aaa_send = ieee802_1x_aaa_send;
2435 cb.finished = _ieee802_1x_finished;
2436 cb.get_eap_user = ieee802_1x_get_eap_user;
2437 cb.sta_entry_alive = ieee802_1x_sta_entry_alive;
2438 cb.logger = ieee802_1x_logger;
2439 cb.set_port_authorized = ieee802_1x_set_port_authorized;
2440 cb.abort_auth = _ieee802_1x_abort_auth;
2441 cb.tx_key = _ieee802_1x_tx_key;
2442 cb.eapol_event = ieee802_1x_eapol_event;
2443 #ifdef CONFIG_ERP
2444 cb.erp_get_key = ieee802_1x_erp_get_key;
2445 cb.erp_add_key = ieee802_1x_erp_add_key;
2446 #endif /* CONFIG_ERP */
2447
2448 hapd->eapol_auth = eapol_auth_init(&conf, &cb);
2449 if (hapd->eapol_auth == NULL)
2450 return -1;
2451
2452 if ((hapd->conf->ieee802_1x || hapd->conf->wpa) &&
2453 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1))
2454 return -1;
2455
2456 #ifndef CONFIG_NO_RADIUS
2457 if (radius_client_register(hapd->radius, RADIUS_AUTH,
2458 ieee802_1x_receive_auth, hapd))
2459 return -1;
2460 #endif /* CONFIG_NO_RADIUS */
2461
2462 if (hapd->conf->default_wep_key_len) {
2463 for (i = 0; i < 4; i++)
2464 hostapd_drv_set_key(hapd->conf->iface, hapd,
2465 WPA_ALG_NONE, NULL, i, 0, NULL, 0,
2466 NULL, 0);
2467
2468 ieee802_1x_rekey(hapd, NULL);
2469
2470 if (hapd->eapol_auth->default_wep_key == NULL)
2471 return -1;
2472 }
2473
2474 return 0;
2475 }
2476
2477
2478 void ieee802_1x_erp_flush(struct hostapd_data *hapd)
2479 {
2480 struct eap_server_erp_key *erp;
2481
2482 while ((erp = dl_list_first(&hapd->erp_keys, struct eap_server_erp_key,
2483 list)) != NULL) {
2484 dl_list_del(&erp->list);
2485 bin_clear_free(erp, sizeof(*erp));
2486 }
2487 }
2488
2489
2490 void ieee802_1x_deinit(struct hostapd_data *hapd)
2491 {
2492 eloop_cancel_timeout(ieee802_1x_rekey, hapd, NULL);
2493
2494 if (hapd->driver && hapd->drv_priv &&
2495 (hapd->conf->ieee802_1x || hapd->conf->wpa))
2496 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
2497
2498 eapol_auth_deinit(hapd->eapol_auth);
2499 hapd->eapol_auth = NULL;
2500
2501 ieee802_1x_erp_flush(hapd);
2502 }
2503
2504
2505 int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
2506 const u8 *buf, size_t len, int ack)
2507 {
2508 struct ieee80211_hdr *hdr;
2509 u8 *pos;
2510 const unsigned char rfc1042_hdr[ETH_ALEN] =
2511 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
2512
2513 if (sta == NULL)
2514 return -1;
2515 if (len < sizeof(*hdr) + sizeof(rfc1042_hdr) + 2)
2516 return 0;
2517
2518 hdr = (struct ieee80211_hdr *) buf;
2519 pos = (u8 *) (hdr + 1);
2520 if (os_memcmp(pos, rfc1042_hdr, sizeof(rfc1042_hdr)) != 0)
2521 return 0;
2522 pos += sizeof(rfc1042_hdr);
2523 if (WPA_GET_BE16(pos) != ETH_P_PAE)
2524 return 0;
2525 pos += 2;
2526
2527 return ieee802_1x_eapol_tx_status(hapd, sta, pos, buf + len - pos,
2528 ack);
2529 }
2530
2531
2532 int ieee802_1x_eapol_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
2533 const u8 *buf, int len, int ack)
2534 {
2535 const struct ieee802_1x_hdr *xhdr =
2536 (const struct ieee802_1x_hdr *) buf;
2537 const u8 *pos = buf + sizeof(*xhdr);
2538 struct ieee802_1x_eapol_key *key;
2539
2540 if (len < (int) sizeof(*xhdr))
2541 return 0;
2542 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR " TX status - version=%d "
2543 "type=%d length=%d - ack=%d",
2544 MAC2STR(sta->addr), xhdr->version, xhdr->type,
2545 be_to_host16(xhdr->length), ack);
2546
2547 #ifdef CONFIG_WPS
2548 if (xhdr->type == IEEE802_1X_TYPE_EAP_PACKET && ack &&
2549 (sta->flags & WLAN_STA_WPS) &&
2550 ap_sta_pending_delayed_1x_auth_fail_disconnect(hapd, sta)) {
2551 wpa_printf(MSG_DEBUG,
2552 "WPS: Indicate EAP completion on ACK for EAP-Failure");
2553 hostapd_wps_eap_completed(hapd);
2554 }
2555 #endif /* CONFIG_WPS */
2556
2557 if (xhdr->type != IEEE802_1X_TYPE_EAPOL_KEY)
2558 return 0;
2559
2560 if (pos + sizeof(struct wpa_eapol_key) <= buf + len) {
2561 const struct wpa_eapol_key *wpa;
2562 wpa = (const struct wpa_eapol_key *) pos;
2563 if (wpa->type == EAPOL_KEY_TYPE_RSN ||
2564 wpa->type == EAPOL_KEY_TYPE_WPA)
2565 wpa_auth_eapol_key_tx_status(hapd->wpa_auth,
2566 sta->wpa_sm, ack);
2567 }
2568
2569 /* EAPOL EAP-Packet packets are eventually re-sent by either Supplicant
2570 * or Authenticator state machines, but EAPOL-Key packets are not
2571 * retransmitted in case of failure. Try to re-send failed EAPOL-Key
2572 * packets couple of times because otherwise STA keys become
2573 * unsynchronized with AP. */
2574 if (!ack && pos + sizeof(*key) <= buf + len) {
2575 key = (struct ieee802_1x_eapol_key *) pos;
2576 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
2577 HOSTAPD_LEVEL_DEBUG, "did not Ack EAPOL-Key "
2578 "frame (%scast index=%d)",
2579 key->key_index & BIT(7) ? "uni" : "broad",
2580 key->key_index & ~BIT(7));
2581 /* TODO: re-send EAPOL-Key couple of times (with short delay
2582 * between them?). If all attempt fail, report error and
2583 * deauthenticate STA so that it will get new keys when
2584 * authenticating again (e.g., after returning in range).
2585 * Separate limit/transmit state needed both for unicast and
2586 * broadcast keys(?) */
2587 }
2588 /* TODO: could move unicast key configuration from ieee802_1x_tx_key()
2589 * to here and change the key only if the EAPOL-Key packet was Acked.
2590 */
2591
2592 return 1;
2593 }
2594
2595
2596 u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len)
2597 {
2598 if (sm == NULL || sm->identity == NULL)
2599 return NULL;
2600
2601 *len = sm->identity_len;
2602 return sm->identity;
2603 }
2604
2605
2606 u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len,
2607 int idx)
2608 {
2609 if (sm == NULL || sm->radius_class.attr == NULL ||
2610 idx >= (int) sm->radius_class.count)
2611 return NULL;
2612
2613 *len = sm->radius_class.attr[idx].len;
2614 return sm->radius_class.attr[idx].data;
2615 }
2616
2617
2618 struct wpabuf * ieee802_1x_get_radius_cui(struct eapol_state_machine *sm)
2619 {
2620 if (sm == NULL)
2621 return NULL;
2622 return sm->radius_cui;
2623 }
2624
2625
2626 const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len)
2627 {
2628 *len = 0;
2629 if (sm == NULL)
2630 return NULL;
2631
2632 *len = sm->eap_if->eapKeyDataLen;
2633 return sm->eap_if->eapKeyData;
2634 }
2635
2636
2637 #ifdef CONFIG_MACSEC
2638 const u8 * ieee802_1x_get_session_id(struct eapol_state_machine *sm,
2639 size_t *len)
2640 {
2641 *len = 0;
2642 if (!sm || !sm->eap_if)
2643 return NULL;
2644
2645 *len = sm->eap_if->eapSessionIdLen;
2646 return sm->eap_if->eapSessionId;
2647 }
2648 #endif /* CONFIG_MACSEC */
2649
2650
2651 void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm,
2652 int enabled)
2653 {
2654 if (sm == NULL)
2655 return;
2656 sm->eap_if->portEnabled = enabled ? TRUE : FALSE;
2657 eapol_auth_step(sm);
2658 }
2659
2660
2661 void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm,
2662 int valid)
2663 {
2664 if (sm == NULL)
2665 return;
2666 sm->portValid = valid ? TRUE : FALSE;
2667 eapol_auth_step(sm);
2668 }
2669
2670
2671 void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, int pre_auth)
2672 {
2673 if (sm == NULL)
2674 return;
2675 if (pre_auth)
2676 sm->flags |= EAPOL_SM_PREAUTH;
2677 else
2678 sm->flags &= ~EAPOL_SM_PREAUTH;
2679 }
2680
2681
2682 static const char * bool_txt(Boolean val)
2683 {
2684 return val ? "TRUE" : "FALSE";
2685 }
2686
2687
2688 int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
2689 {
2690 /* TODO */
2691 return 0;
2692 }
2693
2694
2695 int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
2696 char *buf, size_t buflen)
2697 {
2698 int len = 0, ret;
2699 struct eapol_state_machine *sm = sta->eapol_sm;
2700 struct os_reltime diff;
2701 const char *name1;
2702 const char *name2;
2703 char *identity_buf = NULL;
2704
2705 if (sm == NULL)
2706 return 0;
2707
2708 ret = os_snprintf(buf + len, buflen - len,
2709 "dot1xPaePortNumber=%d\n"
2710 "dot1xPaePortProtocolVersion=%d\n"
2711 "dot1xPaePortCapabilities=1\n"
2712 "dot1xPaePortInitialize=%d\n"
2713 "dot1xPaePortReauthenticate=FALSE\n",
2714 sta->aid,
2715 EAPOL_VERSION,
2716 sm->initialize);
2717 if (os_snprintf_error(buflen - len, ret))
2718 return len;
2719 len += ret;
2720
2721 /* dot1xAuthConfigTable */
2722 ret = os_snprintf(buf + len, buflen - len,
2723 "dot1xAuthPaeState=%d\n"
2724 "dot1xAuthBackendAuthState=%d\n"
2725 "dot1xAuthAdminControlledDirections=%d\n"
2726 "dot1xAuthOperControlledDirections=%d\n"
2727 "dot1xAuthAuthControlledPortStatus=%d\n"
2728 "dot1xAuthAuthControlledPortControl=%d\n"
2729 "dot1xAuthQuietPeriod=%u\n"
2730 "dot1xAuthServerTimeout=%u\n"
2731 "dot1xAuthReAuthPeriod=%u\n"
2732 "dot1xAuthReAuthEnabled=%s\n"
2733 "dot1xAuthKeyTxEnabled=%s\n",
2734 sm->auth_pae_state + 1,
2735 sm->be_auth_state + 1,
2736 sm->adminControlledDirections,
2737 sm->operControlledDirections,
2738 sm->authPortStatus,
2739 sm->portControl,
2740 sm->quietPeriod,
2741 sm->serverTimeout,
2742 sm->reAuthPeriod,
2743 bool_txt(sm->reAuthEnabled),
2744 bool_txt(sm->keyTxEnabled));
2745 if (os_snprintf_error(buflen - len, ret))
2746 return len;
2747 len += ret;
2748
2749 /* dot1xAuthStatsTable */
2750 ret = os_snprintf(buf + len, buflen - len,
2751 "dot1xAuthEapolFramesRx=%u\n"
2752 "dot1xAuthEapolFramesTx=%u\n"
2753 "dot1xAuthEapolStartFramesRx=%u\n"
2754 "dot1xAuthEapolLogoffFramesRx=%u\n"
2755 "dot1xAuthEapolRespIdFramesRx=%u\n"
2756 "dot1xAuthEapolRespFramesRx=%u\n"
2757 "dot1xAuthEapolReqIdFramesTx=%u\n"
2758 "dot1xAuthEapolReqFramesTx=%u\n"
2759 "dot1xAuthInvalidEapolFramesRx=%u\n"
2760 "dot1xAuthEapLengthErrorFramesRx=%u\n"
2761 "dot1xAuthLastEapolFrameVersion=%u\n"
2762 "dot1xAuthLastEapolFrameSource=" MACSTR "\n",
2763 sm->dot1xAuthEapolFramesRx,
2764 sm->dot1xAuthEapolFramesTx,
2765 sm->dot1xAuthEapolStartFramesRx,
2766 sm->dot1xAuthEapolLogoffFramesRx,
2767 sm->dot1xAuthEapolRespIdFramesRx,
2768 sm->dot1xAuthEapolRespFramesRx,
2769 sm->dot1xAuthEapolReqIdFramesTx,
2770 sm->dot1xAuthEapolReqFramesTx,
2771 sm->dot1xAuthInvalidEapolFramesRx,
2772 sm->dot1xAuthEapLengthErrorFramesRx,
2773 sm->dot1xAuthLastEapolFrameVersion,
2774 MAC2STR(sm->addr));
2775 if (os_snprintf_error(buflen - len, ret))
2776 return len;
2777 len += ret;
2778
2779 /* dot1xAuthDiagTable */
2780 ret = os_snprintf(buf + len, buflen - len,
2781 "dot1xAuthEntersConnecting=%u\n"
2782 "dot1xAuthEapLogoffsWhileConnecting=%u\n"
2783 "dot1xAuthEntersAuthenticating=%u\n"
2784 "dot1xAuthAuthSuccessesWhileAuthenticating=%u\n"
2785 "dot1xAuthAuthTimeoutsWhileAuthenticating=%u\n"
2786 "dot1xAuthAuthFailWhileAuthenticating=%u\n"
2787 "dot1xAuthAuthEapStartsWhileAuthenticating=%u\n"
2788 "dot1xAuthAuthEapLogoffWhileAuthenticating=%u\n"
2789 "dot1xAuthAuthReauthsWhileAuthenticated=%u\n"
2790 "dot1xAuthAuthEapStartsWhileAuthenticated=%u\n"
2791 "dot1xAuthAuthEapLogoffWhileAuthenticated=%u\n"
2792 "dot1xAuthBackendResponses=%u\n"
2793 "dot1xAuthBackendAccessChallenges=%u\n"
2794 "dot1xAuthBackendOtherRequestsToSupplicant=%u\n"
2795 "dot1xAuthBackendAuthSuccesses=%u\n"
2796 "dot1xAuthBackendAuthFails=%u\n",
2797 sm->authEntersConnecting,
2798 sm->authEapLogoffsWhileConnecting,
2799 sm->authEntersAuthenticating,
2800 sm->authAuthSuccessesWhileAuthenticating,
2801 sm->authAuthTimeoutsWhileAuthenticating,
2802 sm->authAuthFailWhileAuthenticating,
2803 sm->authAuthEapStartsWhileAuthenticating,
2804 sm->authAuthEapLogoffWhileAuthenticating,
2805 sm->authAuthReauthsWhileAuthenticated,
2806 sm->authAuthEapStartsWhileAuthenticated,
2807 sm->authAuthEapLogoffWhileAuthenticated,
2808 sm->backendResponses,
2809 sm->backendAccessChallenges,
2810 sm->backendOtherRequestsToSupplicant,
2811 sm->backendAuthSuccesses,
2812 sm->backendAuthFails);
2813 if (os_snprintf_error(buflen - len, ret))
2814 return len;
2815 len += ret;
2816
2817 /* dot1xAuthSessionStatsTable */
2818 os_reltime_age(&sta->acct_session_start, &diff);
2819 if (sm->eap && !sm->identity) {
2820 const u8 *id;
2821 size_t id_len;
2822
2823 id = eap_get_identity(sm->eap, &id_len);
2824 if (id)
2825 identity_buf = dup_binstr(id, id_len);
2826 }
2827 ret = os_snprintf(buf + len, buflen - len,
2828 /* TODO: dot1xAuthSessionOctetsRx */
2829 /* TODO: dot1xAuthSessionOctetsTx */
2830 /* TODO: dot1xAuthSessionFramesRx */
2831 /* TODO: dot1xAuthSessionFramesTx */
2832 "dot1xAuthSessionId=%016llX\n"
2833 "dot1xAuthSessionAuthenticMethod=%d\n"
2834 "dot1xAuthSessionTime=%u\n"
2835 "dot1xAuthSessionTerminateCause=999\n"
2836 "dot1xAuthSessionUserName=%s\n",
2837 (unsigned long long) sta->acct_session_id,
2838 (wpa_key_mgmt_wpa_ieee8021x(
2839 wpa_auth_sta_key_mgmt(sta->wpa_sm))) ?
2840 1 : 2,
2841 (unsigned int) diff.sec,
2842 sm->identity ? (char *) sm->identity :
2843 (identity_buf ? identity_buf : "N/A"));
2844 os_free(identity_buf);
2845 if (os_snprintf_error(buflen - len, ret))
2846 return len;
2847 len += ret;
2848
2849 if (sm->acct_multi_session_id) {
2850 ret = os_snprintf(buf + len, buflen - len,
2851 "authMultiSessionId=%016llX\n",
2852 (unsigned long long)
2853 sm->acct_multi_session_id);
2854 if (os_snprintf_error(buflen - len, ret))
2855 return len;
2856 len += ret;
2857 }
2858
2859 name1 = eap_server_get_name(0, sm->eap_type_authsrv);
2860 name2 = eap_server_get_name(0, sm->eap_type_supp);
2861 ret = os_snprintf(buf + len, buflen - len,
2862 "last_eap_type_as=%d (%s)\n"
2863 "last_eap_type_sta=%d (%s)\n",
2864 sm->eap_type_authsrv, name1,
2865 sm->eap_type_supp, name2);
2866 if (os_snprintf_error(buflen - len, ret))
2867 return len;
2868 len += ret;
2869
2870 return len;
2871 }
2872
2873
2874 #ifdef CONFIG_HS20
2875 static void ieee802_1x_wnm_notif_send(void *eloop_ctx, void *timeout_ctx)
2876 {
2877 struct hostapd_data *hapd = eloop_ctx;
2878 struct sta_info *sta = timeout_ctx;
2879
2880 if (sta->remediation) {
2881 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2882 MACSTR " to indicate Subscription Remediation",
2883 MAC2STR(sta->addr));
2884 hs20_send_wnm_notification(hapd, sta->addr,
2885 sta->remediation_method,
2886 sta->remediation_url);
2887 os_free(sta->remediation_url);
2888 sta->remediation_url = NULL;
2889 }
2890
2891 if (sta->hs20_deauth_req) {
2892 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2893 MACSTR " to indicate imminent deauthentication",
2894 MAC2STR(sta->addr));
2895 hs20_send_wnm_notification_deauth_req(hapd, sta->addr,
2896 sta->hs20_deauth_req);
2897 }
2898
2899 if (sta->hs20_t_c_filtering) {
2900 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2901 MACSTR " to indicate Terms and Conditions filtering",
2902 MAC2STR(sta->addr));
2903 hs20_send_wnm_notification_t_c(hapd, sta->addr, sta->t_c_url);
2904 os_free(sta->t_c_url);
2905 sta->t_c_url = NULL;
2906 }
2907 }
2908 #endif /* CONFIG_HS20 */
2909
2910
2911 static void ieee802_1x_finished(struct hostapd_data *hapd,
2912 struct sta_info *sta, int success,
2913 int remediation)
2914 {
2915 const u8 *key;
2916 size_t len;
2917 /* TODO: get PMKLifetime from WPA parameters */
2918 static const int dot11RSNAConfigPMKLifetime = 43200;
2919 unsigned int session_timeout;
2920 struct os_reltime now, remaining;
2921
2922 #ifdef CONFIG_HS20
2923 if (remediation && !sta->remediation) {
2924 sta->remediation = 1;
2925 os_free(sta->remediation_url);
2926 sta->remediation_url =
2927 os_strdup(hapd->conf->subscr_remediation_url);
2928 sta->remediation_method = 1; /* SOAP-XML SPP */
2929 }
2930
2931 if (success && (sta->remediation || sta->hs20_deauth_req ||
2932 sta->hs20_t_c_filtering)) {
2933 wpa_printf(MSG_DEBUG, "HS 2.0: Schedule WNM-Notification to "
2934 MACSTR " in 100 ms", MAC2STR(sta->addr));
2935 eloop_cancel_timeout(ieee802_1x_wnm_notif_send, hapd, sta);
2936 eloop_register_timeout(0, 100000, ieee802_1x_wnm_notif_send,
2937 hapd, sta);
2938 }
2939 #endif /* CONFIG_HS20 */
2940
2941 #ifdef CONFIG_MACSEC
2942 ieee802_1x_notify_create_actor_hapd(hapd, sta);
2943 #endif /* CONFIG_MACSEC */
2944
2945 key = ieee802_1x_get_key(sta->eapol_sm, &len);
2946 if (sta->session_timeout_set) {
2947 os_get_reltime(&now);
2948 os_reltime_sub(&sta->session_timeout, &now, &remaining);
2949 session_timeout = (remaining.sec > 0) ? remaining.sec : 1;
2950 } else {
2951 session_timeout = dot11RSNAConfigPMKLifetime;
2952 }
2953 if (success && key && len >= PMK_LEN && !sta->remediation &&
2954 !sta->hs20_deauth_requested &&
2955 wpa_auth_pmksa_add(sta->wpa_sm, key, len, session_timeout,
2956 sta->eapol_sm) == 0) {
2957 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
2958 HOSTAPD_LEVEL_DEBUG,
2959 "Added PMKSA cache entry (IEEE 802.1X)");
2960 }
2961
2962 if (!success) {
2963 /*
2964 * Many devices require deauthentication after WPS provisioning
2965 * and some may not be be able to do that themselves, so
2966 * disconnect the client here. In addition, this may also
2967 * benefit IEEE 802.1X/EAPOL authentication cases, too since
2968 * the EAPOL PAE state machine would remain in HELD state for
2969 * considerable amount of time and some EAP methods, like
2970 * EAP-FAST with anonymous provisioning, may require another
2971 * EAPOL authentication to be started to complete connection.
2972 */
2973 ap_sta_delayed_1x_auth_fail_disconnect(hapd, sta);
2974 }
2975 }
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