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[thirdparty/hostap.git] / hostapd / ieee802_1x.c
1 /*
2 * hostapd / IEEE 802.1X-2004 Authenticator
3 * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
15 #include "includes.h"
16
17 #include "hostapd.h"
18 #include "ieee802_1x.h"
19 #include "accounting.h"
20 #include "radius/radius.h"
21 #include "radius/radius_client.h"
22 #include "eapol_sm.h"
23 #include "md5.h"
24 #include "rc4.h"
25 #include "eloop.h"
26 #include "sta_info.h"
27 #include "wpa.h"
28 #include "preauth.h"
29 #include "pmksa_cache.h"
30 #include "driver.h"
31 #include "hw_features.h"
32 #include "eap_server/eap.h"
33
34
35 static void ieee802_1x_finished(struct hostapd_data *hapd,
36 struct sta_info *sta, int success);
37
38
39 static void ieee802_1x_send(struct hostapd_data *hapd, struct sta_info *sta,
40 u8 type, const u8 *data, size_t datalen)
41 {
42 u8 *buf;
43 struct ieee802_1x_hdr *xhdr;
44 size_t len;
45 int encrypt = 0;
46
47 len = sizeof(*xhdr) + datalen;
48 buf = os_zalloc(len);
49 if (buf == NULL) {
50 wpa_printf(MSG_ERROR, "malloc() failed for "
51 "ieee802_1x_send(len=%lu)",
52 (unsigned long) len);
53 return;
54 }
55
56 xhdr = (struct ieee802_1x_hdr *) buf;
57 xhdr->version = hapd->conf->eapol_version;
58 xhdr->type = type;
59 xhdr->length = host_to_be16(datalen);
60
61 if (datalen > 0 && data != NULL)
62 os_memcpy(xhdr + 1, data, datalen);
63
64 if (wpa_auth_pairwise_set(sta->wpa_sm))
65 encrypt = 1;
66 if (sta->flags & WLAN_STA_PREAUTH) {
67 rsn_preauth_send(hapd, sta, buf, len);
68 } else {
69 hostapd_send_eapol(hapd, sta->addr, buf, len, encrypt);
70 }
71
72 os_free(buf);
73 }
74
75
76 void ieee802_1x_set_sta_authorized(struct hostapd_data *hapd,
77 struct sta_info *sta, int authorized)
78 {
79 int res;
80
81 if (sta->flags & WLAN_STA_PREAUTH)
82 return;
83
84 if (authorized) {
85 sta->flags |= WLAN_STA_AUTHORIZED;
86 res = hostapd_sta_set_flags(hapd, sta->addr, sta->flags,
87 WLAN_STA_AUTHORIZED, ~0);
88 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
89 HOSTAPD_LEVEL_DEBUG, "authorizing port");
90 } else {
91 sta->flags &= ~WLAN_STA_AUTHORIZED;
92 res = hostapd_sta_set_flags(hapd, sta->addr, sta->flags,
93 0, ~WLAN_STA_AUTHORIZED);
94 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
95 HOSTAPD_LEVEL_DEBUG, "unauthorizing port");
96 }
97
98 if (res && errno != ENOENT) {
99 printf("Could not set station " MACSTR " flags for kernel "
100 "driver (errno=%d).\n", MAC2STR(sta->addr), errno);
101 }
102
103 if (authorized)
104 accounting_sta_start(hapd, sta);
105 }
106
107
108 static void ieee802_1x_eap_timeout(void *eloop_ctx, void *timeout_ctx)
109 {
110 struct sta_info *sta = eloop_ctx;
111 struct eapol_state_machine *sm = sta->eapol_sm;
112 if (sm == NULL)
113 return;
114 hostapd_logger(sm->hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
115 HOSTAPD_LEVEL_DEBUG, "EAP timeout");
116 sm->eap_if->eapTimeout = TRUE;
117 eapol_auth_step(sm);
118 }
119
120
121 static void ieee802_1x_tx_key_one(struct hostapd_data *hapd,
122 struct sta_info *sta,
123 int idx, int broadcast,
124 u8 *key_data, size_t key_len)
125 {
126 u8 *buf, *ekey;
127 struct ieee802_1x_hdr *hdr;
128 struct ieee802_1x_eapol_key *key;
129 size_t len, ekey_len;
130 struct eapol_state_machine *sm = sta->eapol_sm;
131
132 if (sm == NULL)
133 return;
134
135 len = sizeof(*key) + key_len;
136 buf = os_zalloc(sizeof(*hdr) + len);
137 if (buf == NULL)
138 return;
139
140 hdr = (struct ieee802_1x_hdr *) buf;
141 key = (struct ieee802_1x_eapol_key *) (hdr + 1);
142 key->type = EAPOL_KEY_TYPE_RC4;
143 key->key_length = htons(key_len);
144 wpa_get_ntp_timestamp(key->replay_counter);
145
146 if (os_get_random(key->key_iv, sizeof(key->key_iv))) {
147 wpa_printf(MSG_ERROR, "Could not get random numbers");
148 os_free(buf);
149 return;
150 }
151
152 key->key_index = idx | (broadcast ? 0 : BIT(7));
153 if (hapd->conf->eapol_key_index_workaround) {
154 /* According to some information, WinXP Supplicant seems to
155 * interpret bit7 as an indication whether the key is to be
156 * activated, so make it possible to enable workaround that
157 * sets this bit for all keys. */
158 key->key_index |= BIT(7);
159 }
160
161 /* Key is encrypted using "Key-IV + MSK[0..31]" as the RC4-key and
162 * MSK[32..63] is used to sign the message. */
163 if (sm->eap_if->eapKeyData == NULL || sm->eap_if->eapKeyDataLen < 64) {
164 wpa_printf(MSG_ERROR, "No eapKeyData available for encrypting "
165 "and signing EAPOL-Key");
166 os_free(buf);
167 return;
168 }
169 os_memcpy((u8 *) (key + 1), key_data, key_len);
170 ekey_len = sizeof(key->key_iv) + 32;
171 ekey = os_malloc(ekey_len);
172 if (ekey == NULL) {
173 wpa_printf(MSG_ERROR, "Could not encrypt key");
174 os_free(buf);
175 return;
176 }
177 os_memcpy(ekey, key->key_iv, sizeof(key->key_iv));
178 os_memcpy(ekey + sizeof(key->key_iv), sm->eap_if->eapKeyData, 32);
179 rc4((u8 *) (key + 1), key_len, ekey, ekey_len);
180 os_free(ekey);
181
182 /* This header is needed here for HMAC-MD5, but it will be regenerated
183 * in ieee802_1x_send() */
184 hdr->version = hapd->conf->eapol_version;
185 hdr->type = IEEE802_1X_TYPE_EAPOL_KEY;
186 hdr->length = host_to_be16(len);
187 hmac_md5(sm->eap_if->eapKeyData + 32, 32, buf, sizeof(*hdr) + len,
188 key->key_signature);
189
190 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key to " MACSTR
191 " (%s index=%d)", MAC2STR(sm->addr),
192 broadcast ? "broadcast" : "unicast", idx);
193 ieee802_1x_send(hapd, sta, IEEE802_1X_TYPE_EAPOL_KEY, (u8 *) key, len);
194 if (sta->eapol_sm)
195 sta->eapol_sm->dot1xAuthEapolFramesTx++;
196 os_free(buf);
197 }
198
199
200 static struct hostapd_wep_keys *
201 ieee802_1x_group_alloc(struct hostapd_data *hapd, const char *ifname)
202 {
203 struct hostapd_wep_keys *key;
204
205 key = os_zalloc(sizeof(*key));
206 if (key == NULL)
207 return NULL;
208
209 key->default_len = hapd->conf->default_wep_key_len;
210
211 if (key->idx >= hapd->conf->broadcast_key_idx_max ||
212 key->idx < hapd->conf->broadcast_key_idx_min)
213 key->idx = hapd->conf->broadcast_key_idx_min;
214 else
215 key->idx++;
216
217 if (!key->key[key->idx])
218 key->key[key->idx] = os_malloc(key->default_len);
219 if (key->key[key->idx] == NULL ||
220 os_get_random(key->key[key->idx], key->default_len)) {
221 printf("Could not generate random WEP key (dynamic VLAN).\n");
222 os_free(key->key[key->idx]);
223 key->key[key->idx] = NULL;
224 os_free(key);
225 return NULL;
226 }
227 key->len[key->idx] = key->default_len;
228
229 wpa_printf(MSG_DEBUG, "%s: Default WEP idx %d for dynamic VLAN\n",
230 ifname, key->idx);
231 wpa_hexdump_key(MSG_DEBUG, "Default WEP key (dynamic VLAN)",
232 key->key[key->idx], key->len[key->idx]);
233
234 if (hostapd_set_encryption(ifname, hapd, "WEP", NULL, key->idx,
235 key->key[key->idx], key->len[key->idx], 1))
236 printf("Could not set dynamic VLAN WEP encryption key.\n");
237
238 hostapd_set_ieee8021x(ifname, hapd, 1);
239
240 return key;
241 }
242
243
244 static struct hostapd_wep_keys *
245 ieee802_1x_get_group(struct hostapd_data *hapd, struct hostapd_ssid *ssid,
246 size_t vlan_id)
247 {
248 const char *ifname;
249
250 if (vlan_id == 0)
251 return &ssid->wep;
252
253 if (vlan_id <= ssid->max_dyn_vlan_keys && ssid->dyn_vlan_keys &&
254 ssid->dyn_vlan_keys[vlan_id])
255 return ssid->dyn_vlan_keys[vlan_id];
256
257 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Creating new group "
258 "state machine for VLAN ID %lu",
259 (unsigned long) vlan_id);
260
261 ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
262 if (ifname == NULL) {
263 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Unknown VLAN ID %lu - "
264 "cannot create group key state machine",
265 (unsigned long) vlan_id);
266 return NULL;
267 }
268
269 if (ssid->dyn_vlan_keys == NULL) {
270 int size = (vlan_id + 1) * sizeof(ssid->dyn_vlan_keys[0]);
271 ssid->dyn_vlan_keys = os_zalloc(size);
272 if (ssid->dyn_vlan_keys == NULL)
273 return NULL;
274 ssid->max_dyn_vlan_keys = vlan_id;
275 }
276
277 if (ssid->max_dyn_vlan_keys < vlan_id) {
278 struct hostapd_wep_keys **na;
279 int size = (vlan_id + 1) * sizeof(ssid->dyn_vlan_keys[0]);
280 na = os_realloc(ssid->dyn_vlan_keys, size);
281 if (na == NULL)
282 return NULL;
283 ssid->dyn_vlan_keys = na;
284 os_memset(&ssid->dyn_vlan_keys[ssid->max_dyn_vlan_keys + 1], 0,
285 (vlan_id - ssid->max_dyn_vlan_keys) *
286 sizeof(ssid->dyn_vlan_keys[0]));
287 ssid->max_dyn_vlan_keys = vlan_id;
288 }
289
290 ssid->dyn_vlan_keys[vlan_id] = ieee802_1x_group_alloc(hapd, ifname);
291
292 return ssid->dyn_vlan_keys[vlan_id];
293 }
294
295
296 void ieee802_1x_tx_key(struct hostapd_data *hapd, struct sta_info *sta)
297 {
298 struct hostapd_wep_keys *key = NULL;
299 struct eapol_state_machine *sm = sta->eapol_sm;
300 int vlan_id;
301
302 if (sm == NULL || !sm->eap_if->eapKeyData)
303 return;
304
305 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key(s) to " MACSTR,
306 MAC2STR(sta->addr));
307
308 vlan_id = sta->vlan_id;
309 if (vlan_id < 0 || vlan_id > MAX_VLAN_ID)
310 vlan_id = 0;
311
312 if (vlan_id) {
313 key = ieee802_1x_get_group(hapd, sta->ssid, vlan_id);
314 if (key && key->key[key->idx])
315 ieee802_1x_tx_key_one(hapd, sta, key->idx, 1,
316 key->key[key->idx],
317 key->len[key->idx]);
318 } else if (hapd->default_wep_key) {
319 ieee802_1x_tx_key_one(hapd, sta, hapd->default_wep_key_idx, 1,
320 hapd->default_wep_key,
321 hapd->conf->default_wep_key_len);
322 }
323
324 if (hapd->conf->individual_wep_key_len > 0) {
325 u8 *ikey;
326 ikey = os_malloc(hapd->conf->individual_wep_key_len);
327 if (ikey == NULL ||
328 os_get_random(ikey, hapd->conf->individual_wep_key_len)) {
329 wpa_printf(MSG_ERROR, "Could not generate random "
330 "individual WEP key.");
331 os_free(ikey);
332 return;
333 }
334
335 wpa_hexdump_key(MSG_DEBUG, "Individual WEP key",
336 ikey, hapd->conf->individual_wep_key_len);
337
338 ieee802_1x_tx_key_one(hapd, sta, 0, 0, ikey,
339 hapd->conf->individual_wep_key_len);
340
341 /* TODO: set encryption in TX callback, i.e., only after STA
342 * has ACKed EAPOL-Key frame */
343 if (hostapd_set_encryption(hapd->conf->iface, hapd, "WEP",
344 sta->addr, 0, ikey,
345 hapd->conf->individual_wep_key_len,
346 1)) {
347 wpa_printf(MSG_ERROR, "Could not set individual WEP "
348 "encryption.");
349 }
350
351 os_free(ikey);
352 }
353 }
354
355
356 const char *radius_mode_txt(struct hostapd_data *hapd)
357 {
358 if (hapd->iface->current_mode == NULL)
359 return "802.11";
360
361 switch (hapd->iface->current_mode->mode) {
362 case HOSTAPD_MODE_IEEE80211A:
363 return "802.11a";
364 case HOSTAPD_MODE_IEEE80211G:
365 return "802.11g";
366 case HOSTAPD_MODE_IEEE80211B:
367 default:
368 return "802.11b";
369 }
370 }
371
372
373 int radius_sta_rate(struct hostapd_data *hapd, struct sta_info *sta)
374 {
375 int i;
376 u8 rate = 0;
377
378 for (i = 0; i < sta->supported_rates_len; i++)
379 if ((sta->supported_rates[i] & 0x7f) > rate)
380 rate = sta->supported_rates[i] & 0x7f;
381
382 return rate;
383 }
384
385
386 static void ieee802_1x_learn_identity(struct hostapd_data *hapd,
387 struct eapol_state_machine *sm,
388 const u8 *eap, size_t len)
389 {
390 const u8 *identity;
391 size_t identity_len;
392
393 if (len <= sizeof(struct eap_hdr) ||
394 eap[sizeof(struct eap_hdr)] != EAP_TYPE_IDENTITY)
395 return;
396
397 identity = eap_get_identity(sm->eap, &identity_len);
398 if (identity == NULL)
399 return;
400
401 /* Save station identity for future RADIUS packets */
402 os_free(sm->identity);
403 sm->identity = os_malloc(identity_len + 1);
404 if (sm->identity == NULL) {
405 sm->identity_len = 0;
406 return;
407 }
408
409 os_memcpy(sm->identity, identity, identity_len);
410 sm->identity_len = identity_len;
411 sm->identity[identity_len] = '\0';
412 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
413 HOSTAPD_LEVEL_DEBUG, "STA identity '%s'", sm->identity);
414 sm->dot1xAuthEapolRespIdFramesRx++;
415 }
416
417
418 static void ieee802_1x_encapsulate_radius(struct hostapd_data *hapd,
419 struct sta_info *sta,
420 const u8 *eap, size_t len)
421 {
422 struct radius_msg *msg;
423 char buf[128];
424 struct eapol_state_machine *sm = sta->eapol_sm;
425
426 if (sm == NULL)
427 return;
428
429 ieee802_1x_learn_identity(hapd, sm, eap, len);
430
431 wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
432 "packet");
433
434 sm->radius_identifier = radius_client_get_id(hapd->radius);
435 msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
436 sm->radius_identifier);
437 if (msg == NULL) {
438 printf("Could not create net RADIUS packet\n");
439 return;
440 }
441
442 radius_msg_make_authenticator(msg, (u8 *) sta, sizeof(*sta));
443
444 if (sm->identity &&
445 !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
446 sm->identity, sm->identity_len)) {
447 printf("Could not add User-Name\n");
448 goto fail;
449 }
450
451 if (hapd->conf->own_ip_addr.af == AF_INET &&
452 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
453 (u8 *) &hapd->conf->own_ip_addr.u.v4, 4)) {
454 printf("Could not add NAS-IP-Address\n");
455 goto fail;
456 }
457
458 #ifdef CONFIG_IPV6
459 if (hapd->conf->own_ip_addr.af == AF_INET6 &&
460 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IPV6_ADDRESS,
461 (u8 *) &hapd->conf->own_ip_addr.u.v6, 16)) {
462 printf("Could not add NAS-IPv6-Address\n");
463 goto fail;
464 }
465 #endif /* CONFIG_IPV6 */
466
467 if (hapd->conf->nas_identifier &&
468 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IDENTIFIER,
469 (u8 *) hapd->conf->nas_identifier,
470 os_strlen(hapd->conf->nas_identifier))) {
471 printf("Could not add NAS-Identifier\n");
472 goto fail;
473 }
474
475 if (!radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT, sta->aid)) {
476 printf("Could not add NAS-Port\n");
477 goto fail;
478 }
479
480 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT ":%s",
481 MAC2STR(hapd->own_addr), hapd->conf->ssid.ssid);
482 buf[sizeof(buf) - 1] = '\0';
483 if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLED_STATION_ID,
484 (u8 *) buf, os_strlen(buf))) {
485 printf("Could not add Called-Station-Id\n");
486 goto fail;
487 }
488
489 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
490 MAC2STR(sta->addr));
491 buf[sizeof(buf) - 1] = '\0';
492 if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
493 (u8 *) buf, os_strlen(buf))) {
494 printf("Could not add Calling-Station-Id\n");
495 goto fail;
496 }
497
498 /* TODO: should probably check MTU from driver config; 2304 is max for
499 * IEEE 802.11, but use 1400 to avoid problems with too large packets
500 */
501 if (!radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
502 printf("Could not add Framed-MTU\n");
503 goto fail;
504 }
505
506 if (!radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
507 RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
508 printf("Could not add NAS-Port-Type\n");
509 goto fail;
510 }
511
512 if (sta->flags & WLAN_STA_PREAUTH) {
513 os_strlcpy(buf, "IEEE 802.11i Pre-Authentication",
514 sizeof(buf));
515 } else {
516 os_snprintf(buf, sizeof(buf), "CONNECT %d%sMbps %s",
517 radius_sta_rate(hapd, sta) / 2,
518 (radius_sta_rate(hapd, sta) & 1) ? ".5" : "",
519 radius_mode_txt(hapd));
520 buf[sizeof(buf) - 1] = '\0';
521 }
522 if (!radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
523 (u8 *) buf, os_strlen(buf))) {
524 printf("Could not add Connect-Info\n");
525 goto fail;
526 }
527
528 if (eap && !radius_msg_add_eap(msg, eap, len)) {
529 printf("Could not add EAP-Message\n");
530 goto fail;
531 }
532
533 /* State attribute must be copied if and only if this packet is
534 * Access-Request reply to the previous Access-Challenge */
535 if (sm->last_recv_radius && sm->last_recv_radius->hdr->code ==
536 RADIUS_CODE_ACCESS_CHALLENGE) {
537 int res = radius_msg_copy_attr(msg, sm->last_recv_radius,
538 RADIUS_ATTR_STATE);
539 if (res < 0) {
540 printf("Could not copy State attribute from previous "
541 "Access-Challenge\n");
542 goto fail;
543 }
544 if (res > 0) {
545 wpa_printf(MSG_DEBUG, "Copied RADIUS State Attribute");
546 }
547 }
548
549 radius_client_send(hapd->radius, msg, RADIUS_AUTH, sta->addr);
550 return;
551
552 fail:
553 radius_msg_free(msg);
554 os_free(msg);
555 }
556
557
558 char *eap_type_text(u8 type)
559 {
560 switch (type) {
561 case EAP_TYPE_IDENTITY: return "Identity";
562 case EAP_TYPE_NOTIFICATION: return "Notification";
563 case EAP_TYPE_NAK: return "Nak";
564 case EAP_TYPE_MD5: return "MD5-Challenge";
565 case EAP_TYPE_OTP: return "One-Time Password";
566 case EAP_TYPE_GTC: return "Generic Token Card";
567 case EAP_TYPE_TLS: return "TLS";
568 case EAP_TYPE_TTLS: return "TTLS";
569 case EAP_TYPE_PEAP: return "PEAP";
570 case EAP_TYPE_SIM: return "SIM";
571 case EAP_TYPE_FAST: return "FAST";
572 case EAP_TYPE_SAKE: return "SAKE";
573 case EAP_TYPE_PSK: return "PSK";
574 case EAP_TYPE_PAX: return "PAX";
575 default: return "Unknown";
576 }
577 }
578
579
580 static void handle_eap_response(struct hostapd_data *hapd,
581 struct sta_info *sta, struct eap_hdr *eap,
582 size_t len)
583 {
584 u8 type, *data;
585 struct eapol_state_machine *sm = sta->eapol_sm;
586 if (sm == NULL)
587 return;
588
589 data = (u8 *) (eap + 1);
590
591 if (len < sizeof(*eap) + 1) {
592 printf("handle_eap_response: too short response data\n");
593 return;
594 }
595
596 sm->eap_type_supp = type = data[0];
597 eloop_cancel_timeout(ieee802_1x_eap_timeout, sta, NULL);
598
599 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
600 HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
601 "id=%d len=%d) from STA: EAP Response-%s (%d)",
602 eap->code, eap->identifier, be_to_host16(eap->length),
603 eap_type_text(type), type);
604
605 sm->dot1xAuthEapolRespFramesRx++;
606
607 wpabuf_free(sm->eap_if->eapRespData);
608 sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
609 sm->eapolEap = TRUE;
610 }
611
612
613 /* Process incoming EAP packet from Supplicant */
614 static void handle_eap(struct hostapd_data *hapd, struct sta_info *sta,
615 u8 *buf, size_t len)
616 {
617 struct eap_hdr *eap;
618 u16 eap_len;
619
620 if (len < sizeof(*eap)) {
621 printf(" too short EAP packet\n");
622 return;
623 }
624
625 eap = (struct eap_hdr *) buf;
626
627 eap_len = be_to_host16(eap->length);
628 wpa_printf(MSG_DEBUG, "EAP: code=%d identifier=%d length=%d",
629 eap->code, eap->identifier, eap_len);
630 if (eap_len < sizeof(*eap)) {
631 wpa_printf(MSG_DEBUG, " Invalid EAP length");
632 return;
633 } else if (eap_len > len) {
634 wpa_printf(MSG_DEBUG, " Too short frame to contain this EAP "
635 "packet");
636 return;
637 } else if (eap_len < len) {
638 wpa_printf(MSG_DEBUG, " Ignoring %lu extra bytes after EAP "
639 "packet", (unsigned long) len - eap_len);
640 }
641
642 switch (eap->code) {
643 case EAP_CODE_REQUEST:
644 wpa_printf(MSG_DEBUG, " (request)");
645 return;
646 case EAP_CODE_RESPONSE:
647 wpa_printf(MSG_DEBUG, " (response)");
648 handle_eap_response(hapd, sta, eap, eap_len);
649 break;
650 case EAP_CODE_SUCCESS:
651 wpa_printf(MSG_DEBUG, " (success)");
652 return;
653 case EAP_CODE_FAILURE:
654 wpa_printf(MSG_DEBUG, " (failure)");
655 return;
656 default:
657 wpa_printf(MSG_DEBUG, " (unknown code)");
658 return;
659 }
660 }
661
662
663 /* Process the EAPOL frames from the Supplicant */
664 void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf,
665 size_t len)
666 {
667 struct sta_info *sta;
668 struct ieee802_1x_hdr *hdr;
669 struct ieee802_1x_eapol_key *key;
670 u16 datalen;
671 struct rsn_pmksa_cache_entry *pmksa;
672
673 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa)
674 return;
675
676 wpa_printf(MSG_DEBUG, "IEEE 802.1X: %lu bytes from " MACSTR,
677 (unsigned long) len, MAC2STR(sa));
678 sta = ap_get_sta(hapd, sa);
679 if (!sta) {
680 printf(" no station information available\n");
681 return;
682 }
683
684 if (len < sizeof(*hdr)) {
685 printf(" too short IEEE 802.1X packet\n");
686 return;
687 }
688
689 hdr = (struct ieee802_1x_hdr *) buf;
690 datalen = be_to_host16(hdr->length);
691 wpa_printf(MSG_DEBUG, " IEEE 802.1X: version=%d type=%d length=%d",
692 hdr->version, hdr->type, datalen);
693
694 if (len - sizeof(*hdr) < datalen) {
695 printf(" frame too short for this IEEE 802.1X packet\n");
696 if (sta->eapol_sm)
697 sta->eapol_sm->dot1xAuthEapLengthErrorFramesRx++;
698 return;
699 }
700 if (len - sizeof(*hdr) > datalen) {
701 wpa_printf(MSG_DEBUG, " ignoring %lu extra octets after "
702 "IEEE 802.1X packet",
703 (unsigned long) len - sizeof(*hdr) - datalen);
704 }
705
706 if (sta->eapol_sm) {
707 sta->eapol_sm->dot1xAuthLastEapolFrameVersion = hdr->version;
708 sta->eapol_sm->dot1xAuthEapolFramesRx++;
709 }
710
711 key = (struct ieee802_1x_eapol_key *) (hdr + 1);
712 if (datalen >= sizeof(struct ieee802_1x_eapol_key) &&
713 hdr->type == IEEE802_1X_TYPE_EAPOL_KEY &&
714 (key->type == EAPOL_KEY_TYPE_WPA ||
715 key->type == EAPOL_KEY_TYPE_RSN)) {
716 wpa_receive(hapd->wpa_auth, sta->wpa_sm, (u8 *) hdr,
717 sizeof(*hdr) + datalen);
718 return;
719 }
720
721 if (!hapd->conf->ieee802_1x ||
722 wpa_auth_sta_key_mgmt(sta->wpa_sm) == WPA_KEY_MGMT_PSK ||
723 wpa_auth_sta_key_mgmt(sta->wpa_sm) == WPA_KEY_MGMT_FT_PSK)
724 return;
725
726 if (!sta->eapol_sm) {
727 sta->eapol_sm = eapol_auth_alloc(hapd->eapol_auth, sta->addr,
728 sta->flags & WLAN_STA_PREAUTH,
729 sta);
730 if (!sta->eapol_sm)
731 return;
732 }
733
734 /* since we support version 1, we can ignore version field and proceed
735 * as specified in version 1 standard [IEEE Std 802.1X-2001, 7.5.5] */
736 /* TODO: actually, we are not version 1 anymore.. However, Version 2
737 * does not change frame contents, so should be ok to process frames
738 * more or less identically. Some changes might be needed for
739 * verification of fields. */
740
741 switch (hdr->type) {
742 case IEEE802_1X_TYPE_EAP_PACKET:
743 handle_eap(hapd, sta, (u8 *) (hdr + 1), datalen);
744 break;
745
746 case IEEE802_1X_TYPE_EAPOL_START:
747 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
748 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Start "
749 "from STA");
750 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
751 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
752 if (pmksa) {
753 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
754 HOSTAPD_LEVEL_DEBUG, "cached PMKSA "
755 "available - ignore it since "
756 "STA sent EAPOL-Start");
757 wpa_auth_sta_clear_pmksa(sta->wpa_sm, pmksa);
758 }
759 sta->eapol_sm->eapolStart = TRUE;
760 sta->eapol_sm->dot1xAuthEapolStartFramesRx++;
761 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
762 break;
763
764 case IEEE802_1X_TYPE_EAPOL_LOGOFF:
765 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
766 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Logoff "
767 "from STA");
768 sta->acct_terminate_cause =
769 RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
770 sta->eapol_sm->eapolLogoff = TRUE;
771 sta->eapol_sm->dot1xAuthEapolLogoffFramesRx++;
772 break;
773
774 case IEEE802_1X_TYPE_EAPOL_KEY:
775 wpa_printf(MSG_DEBUG, " EAPOL-Key");
776 if (!(sta->flags & WLAN_STA_AUTHORIZED)) {
777 wpa_printf(MSG_DEBUG, " Dropped key data from "
778 "unauthorized Supplicant");
779 break;
780 }
781 break;
782
783 case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT:
784 wpa_printf(MSG_DEBUG, " EAPOL-Encapsulated-ASF-Alert");
785 /* TODO: implement support for this; show data */
786 break;
787
788 default:
789 wpa_printf(MSG_DEBUG, " unknown IEEE 802.1X packet type");
790 sta->eapol_sm->dot1xAuthInvalidEapolFramesRx++;
791 break;
792 }
793
794 eapol_auth_step(sta->eapol_sm);
795 }
796
797
798 void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta)
799 {
800 struct rsn_pmksa_cache_entry *pmksa;
801 int reassoc = 1;
802 int force_1x = 0;
803
804 if ((!force_1x && !hapd->conf->ieee802_1x) ||
805 wpa_auth_sta_key_mgmt(sta->wpa_sm) == WPA_KEY_MGMT_PSK ||
806 wpa_auth_sta_key_mgmt(sta->wpa_sm) == WPA_KEY_MGMT_FT_PSK)
807 return;
808
809 if (sta->eapol_sm == NULL) {
810 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
811 HOSTAPD_LEVEL_DEBUG, "start authentication");
812 sta->eapol_sm = eapol_auth_alloc(hapd->eapol_auth, sta->addr,
813 sta->flags & WLAN_STA_PREAUTH,
814 sta);
815 if (sta->eapol_sm == NULL) {
816 hostapd_logger(hapd, sta->addr,
817 HOSTAPD_MODULE_IEEE8021X,
818 HOSTAPD_LEVEL_INFO,
819 "failed to allocate state machine");
820 return;
821 }
822 reassoc = 0;
823 }
824
825 sta->eapol_sm->eap_if->portEnabled = TRUE;
826
827 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
828 if (pmksa) {
829 int old_vlanid;
830
831 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
832 HOSTAPD_LEVEL_DEBUG,
833 "PMK from PMKSA cache - skip IEEE 802.1X/EAP");
834 /* Setup EAPOL state machines to already authenticated state
835 * because of existing PMKSA information in the cache. */
836 sta->eapol_sm->keyRun = TRUE;
837 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
838 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
839 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
840 sta->eapol_sm->authSuccess = TRUE;
841 if (sta->eapol_sm->eap)
842 eap_sm_notify_cached(sta->eapol_sm->eap);
843 old_vlanid = sta->vlan_id;
844 pmksa_cache_to_eapol_data(pmksa, sta->eapol_sm);
845 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
846 sta->vlan_id = 0;
847 ap_sta_bind_vlan(hapd, sta, old_vlanid);
848 } else {
849 if (reassoc) {
850 /*
851 * Force EAPOL state machines to start
852 * re-authentication without having to wait for the
853 * Supplicant to send EAPOL-Start.
854 */
855 sta->eapol_sm->reAuthenticate = TRUE;
856 }
857 eapol_auth_step(sta->eapol_sm);
858 }
859 }
860
861
862 void ieee802_1x_free_radius_class(struct radius_class_data *class)
863 {
864 size_t i;
865 if (class == NULL)
866 return;
867 for (i = 0; i < class->count; i++)
868 os_free(class->attr[i].data);
869 os_free(class->attr);
870 class->attr = NULL;
871 class->count = 0;
872 }
873
874
875 int ieee802_1x_copy_radius_class(struct radius_class_data *dst,
876 const struct radius_class_data *src)
877 {
878 size_t i;
879
880 if (src->attr == NULL)
881 return 0;
882
883 dst->attr = os_zalloc(src->count * sizeof(struct radius_attr_data));
884 if (dst->attr == NULL)
885 return -1;
886
887 dst->count = 0;
888
889 for (i = 0; i < src->count; i++) {
890 dst->attr[i].data = os_malloc(src->attr[i].len);
891 if (dst->attr[i].data == NULL)
892 break;
893 dst->count++;
894 os_memcpy(dst->attr[i].data, src->attr[i].data,
895 src->attr[i].len);
896 dst->attr[i].len = src->attr[i].len;
897 }
898
899 return 0;
900 }
901
902
903 void ieee802_1x_free_station(struct sta_info *sta)
904 {
905 struct eapol_state_machine *sm = sta->eapol_sm;
906
907 eloop_cancel_timeout(ieee802_1x_eap_timeout, sta, NULL);
908
909 if (sm == NULL)
910 return;
911
912 sta->eapol_sm = NULL;
913
914 if (sm->last_recv_radius) {
915 radius_msg_free(sm->last_recv_radius);
916 os_free(sm->last_recv_radius);
917 }
918
919 os_free(sm->identity);
920 ieee802_1x_free_radius_class(&sm->radius_class);
921 eapol_auth_free(sm);
922 }
923
924
925 static void ieee802_1x_decapsulate_radius(struct hostapd_data *hapd,
926 struct sta_info *sta)
927 {
928 u8 *eap;
929 size_t len;
930 struct eap_hdr *hdr;
931 int eap_type = -1;
932 char buf[64];
933 struct radius_msg *msg;
934 struct eapol_state_machine *sm = sta->eapol_sm;
935
936 if (sm == NULL || sm->last_recv_radius == NULL) {
937 if (sm)
938 sm->eap_if->aaaEapNoReq = TRUE;
939 return;
940 }
941
942 msg = sm->last_recv_radius;
943
944 eap = radius_msg_get_eap(msg, &len);
945 if (eap == NULL) {
946 /* RFC 3579, Chap. 2.6.3:
947 * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
948 * attribute */
949 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
950 HOSTAPD_LEVEL_WARNING, "could not extract "
951 "EAP-Message from RADIUS message");
952 sm->eap_if->aaaEapNoReq = TRUE;
953 return;
954 }
955
956 if (len < sizeof(*hdr)) {
957 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
958 HOSTAPD_LEVEL_WARNING, "too short EAP packet "
959 "received from authentication server");
960 os_free(eap);
961 sm->eap_if->aaaEapNoReq = TRUE;
962 return;
963 }
964
965 if (len > sizeof(*hdr))
966 eap_type = eap[sizeof(*hdr)];
967
968 hdr = (struct eap_hdr *) eap;
969 switch (hdr->code) {
970 case EAP_CODE_REQUEST:
971 if (eap_type >= 0)
972 sm->eap_type_authsrv = eap_type;
973 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
974 eap_type >= 0 ? eap_type_text(eap_type) : "??",
975 eap_type);
976 break;
977 case EAP_CODE_RESPONSE:
978 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
979 eap_type >= 0 ? eap_type_text(eap_type) : "??",
980 eap_type);
981 break;
982 case EAP_CODE_SUCCESS:
983 os_strlcpy(buf, "EAP Success", sizeof(buf));
984 break;
985 case EAP_CODE_FAILURE:
986 os_strlcpy(buf, "EAP Failure", sizeof(buf));
987 break;
988 default:
989 os_strlcpy(buf, "unknown EAP code", sizeof(buf));
990 break;
991 }
992 buf[sizeof(buf) - 1] = '\0';
993 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
994 HOSTAPD_LEVEL_DEBUG, "decapsulated EAP packet (code=%d "
995 "id=%d len=%d) from RADIUS server: %s",
996 hdr->code, hdr->identifier, be_to_host16(hdr->length),
997 buf);
998 sm->eap_if->aaaEapReq = TRUE;
999
1000 wpabuf_free(sm->eap_if->aaaEapReqData);
1001 sm->eap_if->aaaEapReqData = wpabuf_alloc_ext_data(eap, len);
1002 }
1003
1004
1005 static void ieee802_1x_get_keys(struct hostapd_data *hapd,
1006 struct sta_info *sta, struct radius_msg *msg,
1007 struct radius_msg *req,
1008 u8 *shared_secret, size_t shared_secret_len)
1009 {
1010 struct radius_ms_mppe_keys *keys;
1011 struct eapol_state_machine *sm = sta->eapol_sm;
1012 if (sm == NULL)
1013 return;
1014
1015 keys = radius_msg_get_ms_keys(msg, req, shared_secret,
1016 shared_secret_len);
1017
1018 if (keys && keys->send && keys->recv) {
1019 size_t len = keys->send_len + keys->recv_len;
1020 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Send-Key",
1021 keys->send, keys->send_len);
1022 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Recv-Key",
1023 keys->recv, keys->recv_len);
1024
1025 os_free(sm->eap_if->aaaEapKeyData);
1026 sm->eap_if->aaaEapKeyData = os_malloc(len);
1027 if (sm->eap_if->aaaEapKeyData) {
1028 os_memcpy(sm->eap_if->aaaEapKeyData, keys->recv,
1029 keys->recv_len);
1030 os_memcpy(sm->eap_if->aaaEapKeyData + keys->recv_len,
1031 keys->send, keys->send_len);
1032 sm->eap_if->aaaEapKeyDataLen = len;
1033 sm->eap_if->aaaEapKeyAvailable = TRUE;
1034 }
1035 }
1036
1037 if (keys) {
1038 os_free(keys->send);
1039 os_free(keys->recv);
1040 os_free(keys);
1041 }
1042 }
1043
1044
1045 static void ieee802_1x_store_radius_class(struct hostapd_data *hapd,
1046 struct sta_info *sta,
1047 struct radius_msg *msg)
1048 {
1049 u8 *class;
1050 size_t class_len;
1051 struct eapol_state_machine *sm = sta->eapol_sm;
1052 int count, i;
1053 struct radius_attr_data *nclass;
1054 size_t nclass_count;
1055
1056 if (!hapd->conf->radius->acct_server || hapd->radius == NULL ||
1057 sm == NULL)
1058 return;
1059
1060 ieee802_1x_free_radius_class(&sm->radius_class);
1061 count = radius_msg_count_attr(msg, RADIUS_ATTR_CLASS, 1);
1062 if (count <= 0)
1063 return;
1064
1065 nclass = os_zalloc(count * sizeof(struct radius_attr_data));
1066 if (nclass == NULL)
1067 return;
1068
1069 nclass_count = 0;
1070
1071 class = NULL;
1072 for (i = 0; i < count; i++) {
1073 do {
1074 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CLASS,
1075 &class, &class_len,
1076 class) < 0) {
1077 i = count;
1078 break;
1079 }
1080 } while (class_len < 1);
1081
1082 nclass[nclass_count].data = os_malloc(class_len);
1083 if (nclass[nclass_count].data == NULL)
1084 break;
1085
1086 os_memcpy(nclass[nclass_count].data, class, class_len);
1087 nclass[nclass_count].len = class_len;
1088 nclass_count++;
1089 }
1090
1091 sm->radius_class.attr = nclass;
1092 sm->radius_class.count = nclass_count;
1093 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Stored %lu RADIUS Class "
1094 "attributes for " MACSTR,
1095 (unsigned long) sm->radius_class.count,
1096 MAC2STR(sta->addr));
1097 }
1098
1099
1100 /* Update sta->identity based on User-Name attribute in Access-Accept */
1101 static void ieee802_1x_update_sta_identity(struct hostapd_data *hapd,
1102 struct sta_info *sta,
1103 struct radius_msg *msg)
1104 {
1105 u8 *buf, *identity;
1106 size_t len;
1107 struct eapol_state_machine *sm = sta->eapol_sm;
1108
1109 if (sm == NULL)
1110 return;
1111
1112 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &buf, &len,
1113 NULL) < 0)
1114 return;
1115
1116 identity = os_malloc(len + 1);
1117 if (identity == NULL)
1118 return;
1119
1120 os_memcpy(identity, buf, len);
1121 identity[len] = '\0';
1122
1123 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1124 HOSTAPD_LEVEL_DEBUG, "old identity '%s' updated with "
1125 "User-Name from Access-Accept '%s'",
1126 sm->identity ? (char *) sm->identity : "N/A",
1127 (char *) identity);
1128
1129 os_free(sm->identity);
1130 sm->identity = identity;
1131 sm->identity_len = len;
1132 }
1133
1134
1135 struct sta_id_search {
1136 u8 identifier;
1137 struct eapol_state_machine *sm;
1138 };
1139
1140
1141 static int ieee802_1x_select_radius_identifier(struct hostapd_data *hapd,
1142 struct sta_info *sta,
1143 void *ctx)
1144 {
1145 struct sta_id_search *id_search = ctx;
1146 struct eapol_state_machine *sm = sta->eapol_sm;
1147
1148 if (sm && sm->radius_identifier >= 0 &&
1149 sm->radius_identifier == id_search->identifier) {
1150 id_search->sm = sm;
1151 return 1;
1152 }
1153 return 0;
1154 }
1155
1156
1157 static struct eapol_state_machine *
1158 ieee802_1x_search_radius_identifier(struct hostapd_data *hapd, u8 identifier)
1159 {
1160 struct sta_id_search id_search;
1161 id_search.identifier = identifier;
1162 id_search.sm = NULL;
1163 ap_for_each_sta(hapd, ieee802_1x_select_radius_identifier, &id_search);
1164 return id_search.sm;
1165 }
1166
1167
1168 /* Process the RADIUS frames from Authentication Server */
1169 static RadiusRxResult
1170 ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
1171 u8 *shared_secret, size_t shared_secret_len,
1172 void *data)
1173 {
1174 struct hostapd_data *hapd = data;
1175 struct sta_info *sta;
1176 u32 session_timeout = 0, termination_action, acct_interim_interval;
1177 int session_timeout_set, old_vlanid = 0;
1178 int eap_timeout;
1179 struct eapol_state_machine *sm;
1180 int override_eapReq = 0;
1181
1182 sm = ieee802_1x_search_radius_identifier(hapd, msg->hdr->identifier);
1183 if (sm == NULL) {
1184 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Could not find matching "
1185 "station for this RADIUS message");
1186 return RADIUS_RX_UNKNOWN;
1187 }
1188 sta = sm->sta;
1189
1190 /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
1191 * present when packet contains an EAP-Message attribute */
1192 if (msg->hdr->code == RADIUS_CODE_ACCESS_REJECT &&
1193 radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
1194 0) < 0 &&
1195 radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
1196 wpa_printf(MSG_DEBUG, "Allowing RADIUS Access-Reject without "
1197 "Message-Authenticator since it does not include "
1198 "EAP-Message");
1199 } else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
1200 req, 1)) {
1201 printf("Incoming RADIUS packet did not have correct "
1202 "Message-Authenticator - dropped\n");
1203 return RADIUS_RX_INVALID_AUTHENTICATOR;
1204 }
1205
1206 if (msg->hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
1207 msg->hdr->code != RADIUS_CODE_ACCESS_REJECT &&
1208 msg->hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
1209 printf("Unknown RADIUS message code\n");
1210 return RADIUS_RX_UNKNOWN;
1211 }
1212
1213 sm->radius_identifier = -1;
1214 wpa_printf(MSG_DEBUG, "RADIUS packet matching with station " MACSTR,
1215 MAC2STR(sta->addr));
1216
1217 if (sm->last_recv_radius) {
1218 radius_msg_free(sm->last_recv_radius);
1219 os_free(sm->last_recv_radius);
1220 }
1221
1222 sm->last_recv_radius = msg;
1223
1224 session_timeout_set =
1225 !radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
1226 &session_timeout);
1227 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_TERMINATION_ACTION,
1228 &termination_action))
1229 termination_action = RADIUS_TERMINATION_ACTION_DEFAULT;
1230
1231 if (hapd->conf->radius->acct_interim_interval == 0 &&
1232 msg->hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
1233 radius_msg_get_attr_int32(msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
1234 &acct_interim_interval) == 0) {
1235 if (acct_interim_interval < 60) {
1236 hostapd_logger(hapd, sta->addr,
1237 HOSTAPD_MODULE_IEEE8021X,
1238 HOSTAPD_LEVEL_INFO,
1239 "ignored too small "
1240 "Acct-Interim-Interval %d",
1241 acct_interim_interval);
1242 } else
1243 sta->acct_interim_interval = acct_interim_interval;
1244 }
1245
1246
1247 switch (msg->hdr->code) {
1248 case RADIUS_CODE_ACCESS_ACCEPT:
1249 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
1250 sta->vlan_id = 0;
1251 else {
1252 old_vlanid = sta->vlan_id;
1253 sta->vlan_id = radius_msg_get_vlanid(msg);
1254 }
1255 if (sta->vlan_id > 0 &&
1256 hostapd_get_vlan_id_ifname(hapd->conf->vlan,
1257 sta->vlan_id)) {
1258 hostapd_logger(hapd, sta->addr,
1259 HOSTAPD_MODULE_RADIUS,
1260 HOSTAPD_LEVEL_INFO,
1261 "VLAN ID %d", sta->vlan_id);
1262 } else if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_REQUIRED) {
1263 sta->eapol_sm->authFail = TRUE;
1264 hostapd_logger(hapd, sta->addr,
1265 HOSTAPD_MODULE_IEEE8021X,
1266 HOSTAPD_LEVEL_INFO, "authentication "
1267 "server did not include required VLAN "
1268 "ID in Access-Accept");
1269 break;
1270 }
1271
1272 ap_sta_bind_vlan(hapd, sta, old_vlanid);
1273
1274 /* RFC 3580, Ch. 3.17 */
1275 if (session_timeout_set && termination_action ==
1276 RADIUS_TERMINATION_ACTION_RADIUS_REQUEST) {
1277 sm->reAuthPeriod = session_timeout;
1278 } else if (session_timeout_set)
1279 ap_sta_session_timeout(hapd, sta, session_timeout);
1280
1281 sm->eap_if->aaaSuccess = TRUE;
1282 override_eapReq = 1;
1283 ieee802_1x_get_keys(hapd, sta, msg, req, shared_secret,
1284 shared_secret_len);
1285 ieee802_1x_store_radius_class(hapd, sta, msg);
1286 ieee802_1x_update_sta_identity(hapd, sta, msg);
1287 if (sm->eap_if->eapKeyAvailable &&
1288 wpa_auth_pmksa_add(sta->wpa_sm, sm->eapol_key_crypt,
1289 session_timeout_set ?
1290 (int) session_timeout : -1, sm) == 0) {
1291 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
1292 HOSTAPD_LEVEL_DEBUG,
1293 "Added PMKSA cache entry");
1294 }
1295 break;
1296 case RADIUS_CODE_ACCESS_REJECT:
1297 sm->eap_if->aaaFail = TRUE;
1298 override_eapReq = 1;
1299 break;
1300 case RADIUS_CODE_ACCESS_CHALLENGE:
1301 sm->eap_if->aaaEapReq = TRUE;
1302 if (session_timeout_set) {
1303 /* RFC 2869, Ch. 2.3.2; RFC 3580, Ch. 3.17 */
1304 eap_timeout = session_timeout;
1305 } else
1306 eap_timeout = 30;
1307 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
1308 HOSTAPD_LEVEL_DEBUG,
1309 "using EAP timeout of %d seconds%s",
1310 eap_timeout,
1311 session_timeout_set ? " (from RADIUS)" : "");
1312 eloop_cancel_timeout(ieee802_1x_eap_timeout, sta, NULL);
1313 eloop_register_timeout(eap_timeout, 0, ieee802_1x_eap_timeout,
1314 sta, NULL);
1315 sm->eap_if->eapTimeout = FALSE;
1316 break;
1317 }
1318
1319 ieee802_1x_decapsulate_radius(hapd, sta);
1320 if (override_eapReq)
1321 sm->eap_if->aaaEapReq = FALSE;
1322
1323 eapol_auth_step(sm);
1324
1325 return RADIUS_RX_QUEUED;
1326 }
1327
1328
1329 void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta)
1330 {
1331 struct eapol_state_machine *sm = sta->eapol_sm;
1332 if (sm == NULL)
1333 return;
1334
1335 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1336 HOSTAPD_LEVEL_DEBUG, "aborting authentication");
1337
1338 if (sm->last_recv_radius) {
1339 radius_msg_free(sm->last_recv_radius);
1340 os_free(sm->last_recv_radius);
1341 sm->last_recv_radius = NULL;
1342 }
1343 }
1344
1345
1346 #ifdef HOSTAPD_DUMP_STATE
1347 static void fprint_char(FILE *f, char c)
1348 {
1349 if (c >= 32 && c < 127)
1350 fprintf(f, "%c", c);
1351 else
1352 fprintf(f, "<%02x>", c);
1353 }
1354
1355
1356 void ieee802_1x_dump_state(FILE *f, const char *prefix, struct sta_info *sta)
1357 {
1358 struct eapol_state_machine *sm = sta->eapol_sm;
1359 if (sm == NULL)
1360 return;
1361
1362 fprintf(f, "%sIEEE 802.1X:\n", prefix);
1363
1364 if (sm->identity) {
1365 size_t i;
1366 fprintf(f, "%sidentity=", prefix);
1367 for (i = 0; i < sm->identity_len; i++)
1368 fprint_char(f, sm->identity[i]);
1369 fprintf(f, "\n");
1370 }
1371
1372 fprintf(f, "%slast EAP type: Authentication Server: %d (%s) "
1373 "Supplicant: %d (%s)\n", prefix,
1374 sm->eap_type_authsrv, eap_type_text(sm->eap_type_authsrv),
1375 sm->eap_type_supp, eap_type_text(sm->eap_type_supp));
1376
1377 fprintf(f, "%scached_packets=%s\n", prefix,
1378 sm->last_recv_radius ? "[RX RADIUS]" : "");
1379
1380 eapol_auth_dump_state(f, prefix, sm);
1381 }
1382 #endif /* HOSTAPD_DUMP_STATE */
1383
1384
1385 static int ieee802_1x_rekey_broadcast(struct hostapd_data *hapd)
1386 {
1387 if (hapd->conf->default_wep_key_len < 1)
1388 return 0;
1389
1390 os_free(hapd->default_wep_key);
1391 hapd->default_wep_key = os_malloc(hapd->conf->default_wep_key_len);
1392 if (hapd->default_wep_key == NULL ||
1393 os_get_random(hapd->default_wep_key,
1394 hapd->conf->default_wep_key_len)) {
1395 printf("Could not generate random WEP key.\n");
1396 os_free(hapd->default_wep_key);
1397 hapd->default_wep_key = NULL;
1398 return -1;
1399 }
1400
1401 wpa_hexdump_key(MSG_DEBUG, "IEEE 802.1X: New default WEP key",
1402 hapd->default_wep_key,
1403 hapd->conf->default_wep_key_len);
1404
1405 return 0;
1406 }
1407
1408
1409 static int ieee802_1x_sta_key_available(struct hostapd_data *hapd,
1410 struct sta_info *sta, void *ctx)
1411 {
1412 if (sta->eapol_sm) {
1413 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1414 eapol_auth_step(sta->eapol_sm);
1415 }
1416 return 0;
1417 }
1418
1419
1420 static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx)
1421 {
1422 struct hostapd_data *hapd = eloop_ctx;
1423
1424 if (hapd->default_wep_key_idx >= 3)
1425 hapd->default_wep_key_idx =
1426 hapd->conf->individual_wep_key_len > 0 ? 1 : 0;
1427 else
1428 hapd->default_wep_key_idx++;
1429
1430 wpa_printf(MSG_DEBUG, "IEEE 802.1X: New default WEP key index %d",
1431 hapd->default_wep_key_idx);
1432
1433 if (ieee802_1x_rekey_broadcast(hapd)) {
1434 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
1435 HOSTAPD_LEVEL_WARNING, "failed to generate a "
1436 "new broadcast key");
1437 os_free(hapd->default_wep_key);
1438 hapd->default_wep_key = NULL;
1439 return;
1440 }
1441
1442 /* TODO: Could setup key for RX here, but change default TX keyid only
1443 * after new broadcast key has been sent to all stations. */
1444 if (hostapd_set_encryption(hapd->conf->iface, hapd, "WEP", NULL,
1445 hapd->default_wep_key_idx,
1446 hapd->default_wep_key,
1447 hapd->conf->default_wep_key_len, 1)) {
1448 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
1449 HOSTAPD_LEVEL_WARNING, "failed to configure a "
1450 "new broadcast key");
1451 os_free(hapd->default_wep_key);
1452 hapd->default_wep_key = NULL;
1453 return;
1454 }
1455
1456 ap_for_each_sta(hapd, ieee802_1x_sta_key_available, NULL);
1457
1458 if (hapd->conf->wep_rekeying_period > 0) {
1459 eloop_register_timeout(hapd->conf->wep_rekeying_period, 0,
1460 ieee802_1x_rekey, hapd, NULL);
1461 }
1462 }
1463
1464
1465 static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type,
1466 const u8 *data, size_t datalen)
1467 {
1468 ieee802_1x_send(ctx, sta_ctx, type, data, datalen);
1469 }
1470
1471
1472 static void ieee802_1x_aaa_send(void *ctx, void *sta_ctx,
1473 const u8 *data, size_t datalen)
1474 {
1475 struct hostapd_data *hapd = ctx;
1476 struct sta_info *sta = sta_ctx;
1477
1478 ieee802_1x_encapsulate_radius(hapd, sta, data, datalen);
1479 }
1480
1481
1482 static void _ieee802_1x_finished(void *ctx, void *sta_ctx, int success,
1483 int preauth)
1484 {
1485 struct hostapd_data *hapd = ctx;
1486 struct sta_info *sta = sta_ctx;
1487 if (preauth)
1488 rsn_preauth_finished(hapd, sta, success);
1489 else
1490 ieee802_1x_finished(hapd, sta, success);
1491 }
1492
1493
1494 static int ieee802_1x_get_eap_user(void *ctx, const u8 *identity,
1495 size_t identity_len, int phase2,
1496 struct eap_user *user)
1497 {
1498 struct hostapd_data *hapd = ctx;
1499 const struct hostapd_eap_user *eap_user;
1500 int i, count;
1501
1502 eap_user = hostapd_get_eap_user(hapd->conf, identity,
1503 identity_len, phase2);
1504 if (eap_user == NULL)
1505 return -1;
1506
1507 os_memset(user, 0, sizeof(*user));
1508 user->phase2 = phase2;
1509 count = EAP_USER_MAX_METHODS;
1510 if (count > EAP_MAX_METHODS)
1511 count = EAP_MAX_METHODS;
1512 for (i = 0; i < count; i++) {
1513 user->methods[i].vendor = eap_user->methods[i].vendor;
1514 user->methods[i].method = eap_user->methods[i].method;
1515 }
1516
1517 if (eap_user->password) {
1518 user->password = os_malloc(eap_user->password_len);
1519 if (user->password == NULL)
1520 return -1;
1521 os_memcpy(user->password, eap_user->password,
1522 eap_user->password_len);
1523 user->password_len = eap_user->password_len;
1524 }
1525 user->force_version = eap_user->force_version;
1526 user->ttls_auth = eap_user->ttls_auth;
1527
1528 return 0;
1529 }
1530
1531
1532 static int ieee802_1x_sta_entry_alive(void *ctx, const u8 *addr)
1533 {
1534 struct hostapd_data *hapd = ctx;
1535 struct sta_info *sta;
1536 sta = ap_get_sta(hapd, addr);
1537 if (sta == NULL || sta->eapol_sm == NULL)
1538 return 0;
1539 return 1;
1540 }
1541
1542
1543 static void ieee802_1x_logger(void *ctx, const u8 *addr,
1544 eapol_logger_level level, const char *txt)
1545 {
1546 struct hostapd_data *hapd = ctx;
1547 int hlevel;
1548
1549 switch (level) {
1550 case EAPOL_LOGGER_WARNING:
1551 hlevel = HOSTAPD_LEVEL_WARNING;
1552 break;
1553 case EAPOL_LOGGER_INFO:
1554 hlevel = HOSTAPD_LEVEL_INFO;
1555 break;
1556 case EAPOL_LOGGER_DEBUG:
1557 default:
1558 hlevel = HOSTAPD_LEVEL_DEBUG;
1559 break;
1560 }
1561
1562 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE8021X, hlevel, "%s",
1563 txt);
1564 }
1565
1566
1567 static void ieee802_1x_set_port_authorized(void *ctx, void *sta_ctx,
1568 int authorized)
1569 {
1570 struct hostapd_data *hapd = ctx;
1571 struct sta_info *sta = sta_ctx;
1572 ieee802_1x_set_sta_authorized(hapd, sta, authorized);
1573 }
1574
1575
1576 static void _ieee802_1x_abort_auth(void *ctx, void *sta_ctx)
1577 {
1578 struct hostapd_data *hapd = ctx;
1579 struct sta_info *sta = sta_ctx;
1580 ieee802_1x_abort_auth(hapd, sta);
1581 }
1582
1583
1584 static void _ieee802_1x_tx_key(void *ctx, void *sta_ctx)
1585 {
1586 struct hostapd_data *hapd = ctx;
1587 struct sta_info *sta = sta_ctx;
1588 ieee802_1x_tx_key(hapd, sta);
1589 }
1590
1591
1592 int ieee802_1x_init(struct hostapd_data *hapd)
1593 {
1594 int i;
1595 struct eapol_auth_config conf;
1596 struct eapol_auth_cb cb;
1597
1598 os_memset(&conf, 0, sizeof(conf));
1599 conf.hapd = hapd;
1600 conf.eap_reauth_period = hapd->conf->eap_reauth_period;
1601 conf.wpa = hapd->conf->wpa;
1602 conf.individual_wep_key_len = hapd->conf->individual_wep_key_len;
1603 conf.eap_server = hapd->conf->eap_server;
1604 conf.ssl_ctx = hapd->ssl_ctx;
1605 conf.eap_sim_db_priv = hapd->eap_sim_db_priv;
1606 conf.eap_req_id_text = hapd->conf->eap_req_id_text;
1607 conf.eap_req_id_text_len = hapd->conf->eap_req_id_text_len;
1608 conf.pac_opaque_encr_key = hapd->conf->pac_opaque_encr_key;
1609 conf.eap_fast_a_id = hapd->conf->eap_fast_a_id;
1610 conf.eap_sim_aka_result_ind = hapd->conf->eap_sim_aka_result_ind;
1611 conf.tnc = hapd->conf->tnc;
1612
1613 os_memset(&cb, 0, sizeof(cb));
1614 cb.eapol_send = ieee802_1x_eapol_send;
1615 cb.aaa_send = ieee802_1x_aaa_send;
1616 cb.finished = _ieee802_1x_finished;
1617 cb.get_eap_user = ieee802_1x_get_eap_user;
1618 cb.sta_entry_alive = ieee802_1x_sta_entry_alive;
1619 cb.logger = ieee802_1x_logger;
1620 cb.set_port_authorized = ieee802_1x_set_port_authorized;
1621 cb.abort_auth = _ieee802_1x_abort_auth;
1622 cb.tx_key = _ieee802_1x_tx_key;
1623
1624 hapd->eapol_auth = eapol_auth_init(&conf, &cb);
1625 if (hapd->eapol_auth == NULL)
1626 return -1;
1627
1628 if ((hapd->conf->ieee802_1x || hapd->conf->wpa) &&
1629 hostapd_set_ieee8021x(hapd->conf->iface, hapd, 1))
1630 return -1;
1631
1632 if (radius_client_register(hapd->radius, RADIUS_AUTH,
1633 ieee802_1x_receive_auth, hapd))
1634 return -1;
1635
1636 if (hapd->conf->default_wep_key_len) {
1637 hostapd_set_privacy(hapd, 1);
1638
1639 for (i = 0; i < 4; i++)
1640 hostapd_set_encryption(hapd->conf->iface, hapd,
1641 "none", NULL, i, NULL, 0, 0);
1642
1643 ieee802_1x_rekey(hapd, NULL);
1644
1645 if (hapd->default_wep_key == NULL)
1646 return -1;
1647 }
1648
1649 return 0;
1650 }
1651
1652
1653 void ieee802_1x_deinit(struct hostapd_data *hapd)
1654 {
1655 eloop_cancel_timeout(ieee802_1x_rekey, hapd, NULL);
1656
1657 if (hapd->driver != NULL &&
1658 (hapd->conf->ieee802_1x || hapd->conf->wpa))
1659 hostapd_set_ieee8021x(hapd->conf->iface, hapd, 0);
1660
1661 eapol_auth_deinit(hapd->eapol_auth);
1662 hapd->eapol_auth = NULL;
1663 }
1664
1665
1666 int ieee802_1x_reconfig(struct hostapd_data *hapd,
1667 struct hostapd_config *oldconf,
1668 struct hostapd_bss_config *oldbss)
1669 {
1670 ieee802_1x_deinit(hapd);
1671 return ieee802_1x_init(hapd);
1672 }
1673
1674
1675 int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
1676 u8 *buf, size_t len, int ack)
1677 {
1678 struct ieee80211_hdr *hdr;
1679 struct ieee802_1x_hdr *xhdr;
1680 struct ieee802_1x_eapol_key *key;
1681 u8 *pos;
1682 const unsigned char rfc1042_hdr[ETH_ALEN] =
1683 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
1684
1685 if (sta == NULL)
1686 return -1;
1687 if (len < sizeof(*hdr) + sizeof(rfc1042_hdr) + 2 + sizeof(*xhdr))
1688 return 0;
1689
1690 hdr = (struct ieee80211_hdr *) buf;
1691 pos = (u8 *) (hdr + 1);
1692 if (os_memcmp(pos, rfc1042_hdr, sizeof(rfc1042_hdr)) != 0)
1693 return 0;
1694 pos += sizeof(rfc1042_hdr);
1695 if (WPA_GET_BE16(pos) != ETH_P_PAE)
1696 return 0;
1697 pos += 2;
1698
1699 xhdr = (struct ieee802_1x_hdr *) pos;
1700 pos += sizeof(*xhdr);
1701
1702 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR " TX status - version=%d "
1703 "type=%d length=%d - ack=%d",
1704 MAC2STR(sta->addr), xhdr->version, xhdr->type,
1705 be_to_host16(xhdr->length), ack);
1706
1707 /* EAPOL EAP-Packet packets are eventually re-sent by either Supplicant
1708 * or Authenticator state machines, but EAPOL-Key packets are not
1709 * retransmitted in case of failure. Try to re-sent failed EAPOL-Key
1710 * packets couple of times because otherwise STA keys become
1711 * unsynchronized with AP. */
1712 if (xhdr->type == IEEE802_1X_TYPE_EAPOL_KEY && !ack &&
1713 pos + sizeof(*key) <= buf + len) {
1714 key = (struct ieee802_1x_eapol_key *) pos;
1715 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1716 HOSTAPD_LEVEL_DEBUG, "did not Ack EAPOL-Key "
1717 "frame (%scast index=%d)",
1718 key->key_index & BIT(7) ? "uni" : "broad",
1719 key->key_index & ~BIT(7));
1720 /* TODO: re-send EAPOL-Key couple of times (with short delay
1721 * between them?). If all attempt fail, report error and
1722 * deauthenticate STA so that it will get new keys when
1723 * authenticating again (e.g., after returning in range).
1724 * Separate limit/transmit state needed both for unicast and
1725 * broadcast keys(?) */
1726 }
1727 /* TODO: could move unicast key configuration from ieee802_1x_tx_key()
1728 * to here and change the key only if the EAPOL-Key packet was Acked.
1729 */
1730
1731 return 1;
1732 }
1733
1734
1735 u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len)
1736 {
1737 if (sm == NULL || sm->identity == NULL)
1738 return NULL;
1739
1740 *len = sm->identity_len;
1741 return sm->identity;
1742 }
1743
1744
1745 u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len,
1746 int idx)
1747 {
1748 if (sm == NULL || sm->radius_class.attr == NULL ||
1749 idx >= (int) sm->radius_class.count)
1750 return NULL;
1751
1752 *len = sm->radius_class.attr[idx].len;
1753 return sm->radius_class.attr[idx].data;
1754 }
1755
1756
1757 const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len)
1758 {
1759 if (sm == NULL)
1760 return NULL;
1761
1762 *len = sm->eap_if->eapKeyDataLen;
1763 return sm->eap_if->eapKeyData;
1764 }
1765
1766
1767 void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm,
1768 int enabled)
1769 {
1770 if (sm == NULL)
1771 return;
1772 sm->eap_if->portEnabled = enabled ? TRUE : FALSE;
1773 eapol_auth_step(sm);
1774 }
1775
1776
1777 void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm,
1778 int valid)
1779 {
1780 if (sm == NULL)
1781 return;
1782 sm->portValid = valid ? TRUE : FALSE;
1783 eapol_auth_step(sm);
1784 }
1785
1786
1787 void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, int pre_auth)
1788 {
1789 if (sm == NULL)
1790 return;
1791 if (pre_auth)
1792 sm->flags |= EAPOL_SM_PREAUTH;
1793 else
1794 sm->flags &= ~EAPOL_SM_PREAUTH;
1795 }
1796
1797
1798 static const char * bool_txt(Boolean bool)
1799 {
1800 return bool ? "TRUE" : "FALSE";
1801 }
1802
1803
1804 int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
1805 {
1806 /* TODO */
1807 return 0;
1808 }
1809
1810
1811 int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
1812 char *buf, size_t buflen)
1813 {
1814 int len = 0, ret;
1815 struct eapol_state_machine *sm = sta->eapol_sm;
1816
1817 if (sm == NULL)
1818 return 0;
1819
1820 ret = os_snprintf(buf + len, buflen - len,
1821 "dot1xPaePortNumber=%d\n"
1822 "dot1xPaePortProtocolVersion=%d\n"
1823 "dot1xPaePortCapabilities=1\n"
1824 "dot1xPaePortInitialize=%d\n"
1825 "dot1xPaePortReauthenticate=FALSE\n",
1826 sta->aid,
1827 EAPOL_VERSION,
1828 sm->initialize);
1829 if (ret < 0 || (size_t) ret >= buflen - len)
1830 return len;
1831 len += ret;
1832
1833 /* dot1xAuthConfigTable */
1834 ret = os_snprintf(buf + len, buflen - len,
1835 "dot1xAuthPaeState=%d\n"
1836 "dot1xAuthBackendAuthState=%d\n"
1837 "dot1xAuthAdminControlledDirections=%d\n"
1838 "dot1xAuthOperControlledDirections=%d\n"
1839 "dot1xAuthAuthControlledPortStatus=%d\n"
1840 "dot1xAuthAuthControlledPortControl=%d\n"
1841 "dot1xAuthQuietPeriod=%u\n"
1842 "dot1xAuthServerTimeout=%u\n"
1843 "dot1xAuthReAuthPeriod=%u\n"
1844 "dot1xAuthReAuthEnabled=%s\n"
1845 "dot1xAuthKeyTxEnabled=%s\n",
1846 sm->auth_pae_state + 1,
1847 sm->be_auth_state + 1,
1848 sm->adminControlledDirections,
1849 sm->operControlledDirections,
1850 sm->authPortStatus,
1851 sm->portControl,
1852 sm->quietPeriod,
1853 sm->serverTimeout,
1854 sm->reAuthPeriod,
1855 bool_txt(sm->reAuthEnabled),
1856 bool_txt(sm->keyTxEnabled));
1857 if (ret < 0 || (size_t) ret >= buflen - len)
1858 return len;
1859 len += ret;
1860
1861 /* dot1xAuthStatsTable */
1862 ret = os_snprintf(buf + len, buflen - len,
1863 "dot1xAuthEapolFramesRx=%u\n"
1864 "dot1xAuthEapolFramesTx=%u\n"
1865 "dot1xAuthEapolStartFramesRx=%u\n"
1866 "dot1xAuthEapolLogoffFramesRx=%u\n"
1867 "dot1xAuthEapolRespIdFramesRx=%u\n"
1868 "dot1xAuthEapolRespFramesRx=%u\n"
1869 "dot1xAuthEapolReqIdFramesTx=%u\n"
1870 "dot1xAuthEapolReqFramesTx=%u\n"
1871 "dot1xAuthInvalidEapolFramesRx=%u\n"
1872 "dot1xAuthEapLengthErrorFramesRx=%u\n"
1873 "dot1xAuthLastEapolFrameVersion=%u\n"
1874 "dot1xAuthLastEapolFrameSource=" MACSTR "\n",
1875 sm->dot1xAuthEapolFramesRx,
1876 sm->dot1xAuthEapolFramesTx,
1877 sm->dot1xAuthEapolStartFramesRx,
1878 sm->dot1xAuthEapolLogoffFramesRx,
1879 sm->dot1xAuthEapolRespIdFramesRx,
1880 sm->dot1xAuthEapolRespFramesRx,
1881 sm->dot1xAuthEapolReqIdFramesTx,
1882 sm->dot1xAuthEapolReqFramesTx,
1883 sm->dot1xAuthInvalidEapolFramesRx,
1884 sm->dot1xAuthEapLengthErrorFramesRx,
1885 sm->dot1xAuthLastEapolFrameVersion,
1886 MAC2STR(sm->addr));
1887 if (ret < 0 || (size_t) ret >= buflen - len)
1888 return len;
1889 len += ret;
1890
1891 /* dot1xAuthDiagTable */
1892 ret = os_snprintf(buf + len, buflen - len,
1893 "dot1xAuthEntersConnecting=%u\n"
1894 "dot1xAuthEapLogoffsWhileConnecting=%u\n"
1895 "dot1xAuthEntersAuthenticating=%u\n"
1896 "dot1xAuthAuthSuccessesWhileAuthenticating=%u\n"
1897 "dot1xAuthAuthTimeoutsWhileAuthenticating=%u\n"
1898 "dot1xAuthAuthFailWhileAuthenticating=%u\n"
1899 "dot1xAuthAuthEapStartsWhileAuthenticating=%u\n"
1900 "dot1xAuthAuthEapLogoffWhileAuthenticating=%u\n"
1901 "dot1xAuthAuthReauthsWhileAuthenticated=%u\n"
1902 "dot1xAuthAuthEapStartsWhileAuthenticated=%u\n"
1903 "dot1xAuthAuthEapLogoffWhileAuthenticated=%u\n"
1904 "dot1xAuthBackendResponses=%u\n"
1905 "dot1xAuthBackendAccessChallenges=%u\n"
1906 "dot1xAuthBackendOtherRequestsToSupplicant=%u\n"
1907 "dot1xAuthBackendAuthSuccesses=%u\n"
1908 "dot1xAuthBackendAuthFails=%u\n",
1909 sm->authEntersConnecting,
1910 sm->authEapLogoffsWhileConnecting,
1911 sm->authEntersAuthenticating,
1912 sm->authAuthSuccessesWhileAuthenticating,
1913 sm->authAuthTimeoutsWhileAuthenticating,
1914 sm->authAuthFailWhileAuthenticating,
1915 sm->authAuthEapStartsWhileAuthenticating,
1916 sm->authAuthEapLogoffWhileAuthenticating,
1917 sm->authAuthReauthsWhileAuthenticated,
1918 sm->authAuthEapStartsWhileAuthenticated,
1919 sm->authAuthEapLogoffWhileAuthenticated,
1920 sm->backendResponses,
1921 sm->backendAccessChallenges,
1922 sm->backendOtherRequestsToSupplicant,
1923 sm->backendAuthSuccesses,
1924 sm->backendAuthFails);
1925 if (ret < 0 || (size_t) ret >= buflen - len)
1926 return len;
1927 len += ret;
1928
1929 /* dot1xAuthSessionStatsTable */
1930 ret = os_snprintf(buf + len, buflen - len,
1931 /* TODO: dot1xAuthSessionOctetsRx */
1932 /* TODO: dot1xAuthSessionOctetsTx */
1933 /* TODO: dot1xAuthSessionFramesRx */
1934 /* TODO: dot1xAuthSessionFramesTx */
1935 "dot1xAuthSessionId=%08X-%08X\n"
1936 "dot1xAuthSessionAuthenticMethod=%d\n"
1937 "dot1xAuthSessionTime=%u\n"
1938 "dot1xAuthSessionTerminateCause=999\n"
1939 "dot1xAuthSessionUserName=%s\n",
1940 sta->acct_session_id_hi, sta->acct_session_id_lo,
1941 (wpa_auth_sta_key_mgmt(sta->wpa_sm) ==
1942 WPA_KEY_MGMT_IEEE8021X ||
1943 wpa_auth_sta_key_mgmt(sta->wpa_sm) ==
1944 WPA_KEY_MGMT_FT_IEEE8021X) ? 1 : 2,
1945 (unsigned int) (time(NULL) -
1946 sta->acct_session_start),
1947 sm->identity);
1948 if (ret < 0 || (size_t) ret >= buflen - len)
1949 return len;
1950 len += ret;
1951
1952 return len;
1953 }
1954
1955
1956 static void ieee802_1x_finished(struct hostapd_data *hapd,
1957 struct sta_info *sta, int success)
1958 {
1959 const u8 *key;
1960 size_t len;
1961 /* TODO: get PMKLifetime from WPA parameters */
1962 static const int dot11RSNAConfigPMKLifetime = 43200;
1963
1964 key = ieee802_1x_get_key(sta->eapol_sm, &len);
1965 if (success && key && len >= PMK_LEN &&
1966 wpa_auth_pmksa_add(sta->wpa_sm, key, dot11RSNAConfigPMKLifetime,
1967 sta->eapol_sm) == 0) {
1968 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
1969 HOSTAPD_LEVEL_DEBUG,
1970 "Added PMKSA cache entry (IEEE 802.1X)");
1971 }
1972 }
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