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Added preliminary Wi-Fi Protected Setup (WPS) implementation
[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 !hapd->conf->wps_state)
675 return;
676
677 wpa_printf(MSG_DEBUG, "IEEE 802.1X: %lu bytes from " MACSTR,
678 (unsigned long) len, MAC2STR(sa));
679 sta = ap_get_sta(hapd, sa);
680 if (!sta) {
681 printf(" no station information available\n");
682 return;
683 }
684
685 if (len < sizeof(*hdr)) {
686 printf(" too short IEEE 802.1X packet\n");
687 return;
688 }
689
690 hdr = (struct ieee802_1x_hdr *) buf;
691 datalen = be_to_host16(hdr->length);
692 wpa_printf(MSG_DEBUG, " IEEE 802.1X: version=%d type=%d length=%d",
693 hdr->version, hdr->type, datalen);
694
695 if (len - sizeof(*hdr) < datalen) {
696 printf(" frame too short for this IEEE 802.1X packet\n");
697 if (sta->eapol_sm)
698 sta->eapol_sm->dot1xAuthEapLengthErrorFramesRx++;
699 return;
700 }
701 if (len - sizeof(*hdr) > datalen) {
702 wpa_printf(MSG_DEBUG, " ignoring %lu extra octets after "
703 "IEEE 802.1X packet",
704 (unsigned long) len - sizeof(*hdr) - datalen);
705 }
706
707 if (sta->eapol_sm) {
708 sta->eapol_sm->dot1xAuthLastEapolFrameVersion = hdr->version;
709 sta->eapol_sm->dot1xAuthEapolFramesRx++;
710 }
711
712 key = (struct ieee802_1x_eapol_key *) (hdr + 1);
713 if (datalen >= sizeof(struct ieee802_1x_eapol_key) &&
714 hdr->type == IEEE802_1X_TYPE_EAPOL_KEY &&
715 (key->type == EAPOL_KEY_TYPE_WPA ||
716 key->type == EAPOL_KEY_TYPE_RSN)) {
717 wpa_receive(hapd->wpa_auth, sta->wpa_sm, (u8 *) hdr,
718 sizeof(*hdr) + datalen);
719 return;
720 }
721
722 if ((!hapd->conf->ieee802_1x &&
723 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) ||
724 wpa_key_mgmt_wpa_psk(wpa_auth_sta_key_mgmt(sta->wpa_sm)))
725 return;
726
727 if (!sta->eapol_sm) {
728 sta->eapol_sm = eapol_auth_alloc(hapd->eapol_auth, sta->addr,
729 sta->flags & WLAN_STA_PREAUTH,
730 sta);
731 if (!sta->eapol_sm)
732 return;
733
734 #ifdef CONFIG_WPS
735 if (!hapd->conf->ieee802_1x &&
736 ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) ==
737 WLAN_STA_MAYBE_WPS)) {
738 /*
739 * Delay EAPOL frame transmission until a possible WPS
740 * STA initiates the handshake with EAPOL-Start.
741 */
742 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
743 }
744 #endif /* CONFIG_WPS */
745 }
746
747 /* since we support version 1, we can ignore version field and proceed
748 * as specified in version 1 standard [IEEE Std 802.1X-2001, 7.5.5] */
749 /* TODO: actually, we are not version 1 anymore.. However, Version 2
750 * does not change frame contents, so should be ok to process frames
751 * more or less identically. Some changes might be needed for
752 * verification of fields. */
753
754 switch (hdr->type) {
755 case IEEE802_1X_TYPE_EAP_PACKET:
756 handle_eap(hapd, sta, (u8 *) (hdr + 1), datalen);
757 break;
758
759 case IEEE802_1X_TYPE_EAPOL_START:
760 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
761 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Start "
762 "from STA");
763 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
764 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
765 if (pmksa) {
766 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
767 HOSTAPD_LEVEL_DEBUG, "cached PMKSA "
768 "available - ignore it since "
769 "STA sent EAPOL-Start");
770 wpa_auth_sta_clear_pmksa(sta->wpa_sm, pmksa);
771 }
772 sta->eapol_sm->eapolStart = TRUE;
773 sta->eapol_sm->dot1xAuthEapolStartFramesRx++;
774 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
775 break;
776
777 case IEEE802_1X_TYPE_EAPOL_LOGOFF:
778 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
779 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Logoff "
780 "from STA");
781 sta->acct_terminate_cause =
782 RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
783 accounting_sta_stop(hapd, sta);
784 sta->eapol_sm->eapolLogoff = TRUE;
785 sta->eapol_sm->dot1xAuthEapolLogoffFramesRx++;
786 break;
787
788 case IEEE802_1X_TYPE_EAPOL_KEY:
789 wpa_printf(MSG_DEBUG, " EAPOL-Key");
790 if (!(sta->flags & WLAN_STA_AUTHORIZED)) {
791 wpa_printf(MSG_DEBUG, " Dropped key data from "
792 "unauthorized Supplicant");
793 break;
794 }
795 break;
796
797 case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT:
798 wpa_printf(MSG_DEBUG, " EAPOL-Encapsulated-ASF-Alert");
799 /* TODO: implement support for this; show data */
800 break;
801
802 default:
803 wpa_printf(MSG_DEBUG, " unknown IEEE 802.1X packet type");
804 sta->eapol_sm->dot1xAuthInvalidEapolFramesRx++;
805 break;
806 }
807
808 eapol_auth_step(sta->eapol_sm);
809 }
810
811
812 void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta)
813 {
814 struct rsn_pmksa_cache_entry *pmksa;
815 int reassoc = 1;
816 int force_1x = 0;
817
818 #ifdef CONFIG_WPS
819 if (hapd->conf->wps_state &&
820 (sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
821 /*
822 * Need to enable IEEE 802.1X/EAPOL state machines for possible
823 * WPS handshake even if IEEE 802.1X/EAPOL is not used for
824 * authentication in this BSS.
825 */
826 force_1x = 1;
827 }
828 #endif /* CONFIG_WPS */
829
830 if ((!force_1x && !hapd->conf->ieee802_1x) ||
831 wpa_key_mgmt_wpa_psk(wpa_auth_sta_key_mgmt(sta->wpa_sm)))
832 return;
833
834 if (sta->eapol_sm == NULL) {
835 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
836 HOSTAPD_LEVEL_DEBUG, "start authentication");
837 sta->eapol_sm = eapol_auth_alloc(hapd->eapol_auth, sta->addr,
838 sta->flags & WLAN_STA_PREAUTH,
839 sta);
840 if (sta->eapol_sm == NULL) {
841 hostapd_logger(hapd, sta->addr,
842 HOSTAPD_MODULE_IEEE8021X,
843 HOSTAPD_LEVEL_INFO,
844 "failed to allocate state machine");
845 return;
846 }
847 reassoc = 0;
848 }
849
850 #ifdef CONFIG_WPS
851 if (!hapd->conf->ieee802_1x && !(sta->flags & WLAN_STA_WPS)) {
852 /*
853 * Delay EAPOL frame transmission until a possible WPS
854 * initiates the handshake with EAPOL-Start.
855 */
856 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
857 }
858 #endif /* CONFIG_WPS */
859
860 sta->eapol_sm->eap_if->portEnabled = TRUE;
861
862 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
863 if (pmksa) {
864 int old_vlanid;
865
866 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
867 HOSTAPD_LEVEL_DEBUG,
868 "PMK from PMKSA cache - skip IEEE 802.1X/EAP");
869 /* Setup EAPOL state machines to already authenticated state
870 * because of existing PMKSA information in the cache. */
871 sta->eapol_sm->keyRun = TRUE;
872 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
873 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
874 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
875 sta->eapol_sm->authSuccess = TRUE;
876 if (sta->eapol_sm->eap)
877 eap_sm_notify_cached(sta->eapol_sm->eap);
878 old_vlanid = sta->vlan_id;
879 pmksa_cache_to_eapol_data(pmksa, sta->eapol_sm);
880 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
881 sta->vlan_id = 0;
882 ap_sta_bind_vlan(hapd, sta, old_vlanid);
883 } else {
884 if (reassoc) {
885 /*
886 * Force EAPOL state machines to start
887 * re-authentication without having to wait for the
888 * Supplicant to send EAPOL-Start.
889 */
890 sta->eapol_sm->reAuthenticate = TRUE;
891 }
892 eapol_auth_step(sta->eapol_sm);
893 }
894 }
895
896
897 void ieee802_1x_free_radius_class(struct radius_class_data *class)
898 {
899 size_t i;
900 if (class == NULL)
901 return;
902 for (i = 0; i < class->count; i++)
903 os_free(class->attr[i].data);
904 os_free(class->attr);
905 class->attr = NULL;
906 class->count = 0;
907 }
908
909
910 int ieee802_1x_copy_radius_class(struct radius_class_data *dst,
911 const struct radius_class_data *src)
912 {
913 size_t i;
914
915 if (src->attr == NULL)
916 return 0;
917
918 dst->attr = os_zalloc(src->count * sizeof(struct radius_attr_data));
919 if (dst->attr == NULL)
920 return -1;
921
922 dst->count = 0;
923
924 for (i = 0; i < src->count; i++) {
925 dst->attr[i].data = os_malloc(src->attr[i].len);
926 if (dst->attr[i].data == NULL)
927 break;
928 dst->count++;
929 os_memcpy(dst->attr[i].data, src->attr[i].data,
930 src->attr[i].len);
931 dst->attr[i].len = src->attr[i].len;
932 }
933
934 return 0;
935 }
936
937
938 void ieee802_1x_free_station(struct sta_info *sta)
939 {
940 struct eapol_state_machine *sm = sta->eapol_sm;
941
942 eloop_cancel_timeout(ieee802_1x_eap_timeout, sta, NULL);
943
944 if (sm == NULL)
945 return;
946
947 sta->eapol_sm = NULL;
948
949 if (sm->last_recv_radius) {
950 radius_msg_free(sm->last_recv_radius);
951 os_free(sm->last_recv_radius);
952 }
953
954 os_free(sm->identity);
955 ieee802_1x_free_radius_class(&sm->radius_class);
956 eapol_auth_free(sm);
957 }
958
959
960 static void ieee802_1x_decapsulate_radius(struct hostapd_data *hapd,
961 struct sta_info *sta)
962 {
963 u8 *eap;
964 size_t len;
965 struct eap_hdr *hdr;
966 int eap_type = -1;
967 char buf[64];
968 struct radius_msg *msg;
969 struct eapol_state_machine *sm = sta->eapol_sm;
970
971 if (sm == NULL || sm->last_recv_radius == NULL) {
972 if (sm)
973 sm->eap_if->aaaEapNoReq = TRUE;
974 return;
975 }
976
977 msg = sm->last_recv_radius;
978
979 eap = radius_msg_get_eap(msg, &len);
980 if (eap == NULL) {
981 /* RFC 3579, Chap. 2.6.3:
982 * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
983 * attribute */
984 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
985 HOSTAPD_LEVEL_WARNING, "could not extract "
986 "EAP-Message from RADIUS message");
987 sm->eap_if->aaaEapNoReq = TRUE;
988 return;
989 }
990
991 if (len < sizeof(*hdr)) {
992 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
993 HOSTAPD_LEVEL_WARNING, "too short EAP packet "
994 "received from authentication server");
995 os_free(eap);
996 sm->eap_if->aaaEapNoReq = TRUE;
997 return;
998 }
999
1000 if (len > sizeof(*hdr))
1001 eap_type = eap[sizeof(*hdr)];
1002
1003 hdr = (struct eap_hdr *) eap;
1004 switch (hdr->code) {
1005 case EAP_CODE_REQUEST:
1006 if (eap_type >= 0)
1007 sm->eap_type_authsrv = eap_type;
1008 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
1009 eap_type >= 0 ? eap_type_text(eap_type) : "??",
1010 eap_type);
1011 break;
1012 case EAP_CODE_RESPONSE:
1013 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
1014 eap_type >= 0 ? eap_type_text(eap_type) : "??",
1015 eap_type);
1016 break;
1017 case EAP_CODE_SUCCESS:
1018 os_strlcpy(buf, "EAP Success", sizeof(buf));
1019 break;
1020 case EAP_CODE_FAILURE:
1021 os_strlcpy(buf, "EAP Failure", sizeof(buf));
1022 break;
1023 default:
1024 os_strlcpy(buf, "unknown EAP code", sizeof(buf));
1025 break;
1026 }
1027 buf[sizeof(buf) - 1] = '\0';
1028 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1029 HOSTAPD_LEVEL_DEBUG, "decapsulated EAP packet (code=%d "
1030 "id=%d len=%d) from RADIUS server: %s",
1031 hdr->code, hdr->identifier, be_to_host16(hdr->length),
1032 buf);
1033 sm->eap_if->aaaEapReq = TRUE;
1034
1035 wpabuf_free(sm->eap_if->aaaEapReqData);
1036 sm->eap_if->aaaEapReqData = wpabuf_alloc_ext_data(eap, len);
1037 }
1038
1039
1040 static void ieee802_1x_get_keys(struct hostapd_data *hapd,
1041 struct sta_info *sta, struct radius_msg *msg,
1042 struct radius_msg *req,
1043 u8 *shared_secret, size_t shared_secret_len)
1044 {
1045 struct radius_ms_mppe_keys *keys;
1046 struct eapol_state_machine *sm = sta->eapol_sm;
1047 if (sm == NULL)
1048 return;
1049
1050 keys = radius_msg_get_ms_keys(msg, req, shared_secret,
1051 shared_secret_len);
1052
1053 if (keys && keys->send && keys->recv) {
1054 size_t len = keys->send_len + keys->recv_len;
1055 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Send-Key",
1056 keys->send, keys->send_len);
1057 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Recv-Key",
1058 keys->recv, keys->recv_len);
1059
1060 os_free(sm->eap_if->aaaEapKeyData);
1061 sm->eap_if->aaaEapKeyData = os_malloc(len);
1062 if (sm->eap_if->aaaEapKeyData) {
1063 os_memcpy(sm->eap_if->aaaEapKeyData, keys->recv,
1064 keys->recv_len);
1065 os_memcpy(sm->eap_if->aaaEapKeyData + keys->recv_len,
1066 keys->send, keys->send_len);
1067 sm->eap_if->aaaEapKeyDataLen = len;
1068 sm->eap_if->aaaEapKeyAvailable = TRUE;
1069 }
1070 }
1071
1072 if (keys) {
1073 os_free(keys->send);
1074 os_free(keys->recv);
1075 os_free(keys);
1076 }
1077 }
1078
1079
1080 static void ieee802_1x_store_radius_class(struct hostapd_data *hapd,
1081 struct sta_info *sta,
1082 struct radius_msg *msg)
1083 {
1084 u8 *class;
1085 size_t class_len;
1086 struct eapol_state_machine *sm = sta->eapol_sm;
1087 int count, i;
1088 struct radius_attr_data *nclass;
1089 size_t nclass_count;
1090
1091 if (!hapd->conf->radius->acct_server || hapd->radius == NULL ||
1092 sm == NULL)
1093 return;
1094
1095 ieee802_1x_free_radius_class(&sm->radius_class);
1096 count = radius_msg_count_attr(msg, RADIUS_ATTR_CLASS, 1);
1097 if (count <= 0)
1098 return;
1099
1100 nclass = os_zalloc(count * sizeof(struct radius_attr_data));
1101 if (nclass == NULL)
1102 return;
1103
1104 nclass_count = 0;
1105
1106 class = NULL;
1107 for (i = 0; i < count; i++) {
1108 do {
1109 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CLASS,
1110 &class, &class_len,
1111 class) < 0) {
1112 i = count;
1113 break;
1114 }
1115 } while (class_len < 1);
1116
1117 nclass[nclass_count].data = os_malloc(class_len);
1118 if (nclass[nclass_count].data == NULL)
1119 break;
1120
1121 os_memcpy(nclass[nclass_count].data, class, class_len);
1122 nclass[nclass_count].len = class_len;
1123 nclass_count++;
1124 }
1125
1126 sm->radius_class.attr = nclass;
1127 sm->radius_class.count = nclass_count;
1128 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Stored %lu RADIUS Class "
1129 "attributes for " MACSTR,
1130 (unsigned long) sm->radius_class.count,
1131 MAC2STR(sta->addr));
1132 }
1133
1134
1135 /* Update sta->identity based on User-Name attribute in Access-Accept */
1136 static void ieee802_1x_update_sta_identity(struct hostapd_data *hapd,
1137 struct sta_info *sta,
1138 struct radius_msg *msg)
1139 {
1140 u8 *buf, *identity;
1141 size_t len;
1142 struct eapol_state_machine *sm = sta->eapol_sm;
1143
1144 if (sm == NULL)
1145 return;
1146
1147 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &buf, &len,
1148 NULL) < 0)
1149 return;
1150
1151 identity = os_malloc(len + 1);
1152 if (identity == NULL)
1153 return;
1154
1155 os_memcpy(identity, buf, len);
1156 identity[len] = '\0';
1157
1158 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1159 HOSTAPD_LEVEL_DEBUG, "old identity '%s' updated with "
1160 "User-Name from Access-Accept '%s'",
1161 sm->identity ? (char *) sm->identity : "N/A",
1162 (char *) identity);
1163
1164 os_free(sm->identity);
1165 sm->identity = identity;
1166 sm->identity_len = len;
1167 }
1168
1169
1170 struct sta_id_search {
1171 u8 identifier;
1172 struct eapol_state_machine *sm;
1173 };
1174
1175
1176 static int ieee802_1x_select_radius_identifier(struct hostapd_data *hapd,
1177 struct sta_info *sta,
1178 void *ctx)
1179 {
1180 struct sta_id_search *id_search = ctx;
1181 struct eapol_state_machine *sm = sta->eapol_sm;
1182
1183 if (sm && sm->radius_identifier >= 0 &&
1184 sm->radius_identifier == id_search->identifier) {
1185 id_search->sm = sm;
1186 return 1;
1187 }
1188 return 0;
1189 }
1190
1191
1192 static struct eapol_state_machine *
1193 ieee802_1x_search_radius_identifier(struct hostapd_data *hapd, u8 identifier)
1194 {
1195 struct sta_id_search id_search;
1196 id_search.identifier = identifier;
1197 id_search.sm = NULL;
1198 ap_for_each_sta(hapd, ieee802_1x_select_radius_identifier, &id_search);
1199 return id_search.sm;
1200 }
1201
1202
1203 /* Process the RADIUS frames from Authentication Server */
1204 static RadiusRxResult
1205 ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
1206 u8 *shared_secret, size_t shared_secret_len,
1207 void *data)
1208 {
1209 struct hostapd_data *hapd = data;
1210 struct sta_info *sta;
1211 u32 session_timeout = 0, termination_action, acct_interim_interval;
1212 int session_timeout_set, old_vlanid = 0;
1213 int eap_timeout;
1214 struct eapol_state_machine *sm;
1215 int override_eapReq = 0;
1216
1217 sm = ieee802_1x_search_radius_identifier(hapd, msg->hdr->identifier);
1218 if (sm == NULL) {
1219 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Could not find matching "
1220 "station for this RADIUS message");
1221 return RADIUS_RX_UNKNOWN;
1222 }
1223 sta = sm->sta;
1224
1225 /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
1226 * present when packet contains an EAP-Message attribute */
1227 if (msg->hdr->code == RADIUS_CODE_ACCESS_REJECT &&
1228 radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
1229 0) < 0 &&
1230 radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
1231 wpa_printf(MSG_DEBUG, "Allowing RADIUS Access-Reject without "
1232 "Message-Authenticator since it does not include "
1233 "EAP-Message");
1234 } else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
1235 req, 1)) {
1236 printf("Incoming RADIUS packet did not have correct "
1237 "Message-Authenticator - dropped\n");
1238 return RADIUS_RX_INVALID_AUTHENTICATOR;
1239 }
1240
1241 if (msg->hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
1242 msg->hdr->code != RADIUS_CODE_ACCESS_REJECT &&
1243 msg->hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
1244 printf("Unknown RADIUS message code\n");
1245 return RADIUS_RX_UNKNOWN;
1246 }
1247
1248 sm->radius_identifier = -1;
1249 wpa_printf(MSG_DEBUG, "RADIUS packet matching with station " MACSTR,
1250 MAC2STR(sta->addr));
1251
1252 if (sm->last_recv_radius) {
1253 radius_msg_free(sm->last_recv_radius);
1254 os_free(sm->last_recv_radius);
1255 }
1256
1257 sm->last_recv_radius = msg;
1258
1259 session_timeout_set =
1260 !radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
1261 &session_timeout);
1262 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_TERMINATION_ACTION,
1263 &termination_action))
1264 termination_action = RADIUS_TERMINATION_ACTION_DEFAULT;
1265
1266 if (hapd->conf->radius->acct_interim_interval == 0 &&
1267 msg->hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
1268 radius_msg_get_attr_int32(msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
1269 &acct_interim_interval) == 0) {
1270 if (acct_interim_interval < 60) {
1271 hostapd_logger(hapd, sta->addr,
1272 HOSTAPD_MODULE_IEEE8021X,
1273 HOSTAPD_LEVEL_INFO,
1274 "ignored too small "
1275 "Acct-Interim-Interval %d",
1276 acct_interim_interval);
1277 } else
1278 sta->acct_interim_interval = acct_interim_interval;
1279 }
1280
1281
1282 switch (msg->hdr->code) {
1283 case RADIUS_CODE_ACCESS_ACCEPT:
1284 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
1285 sta->vlan_id = 0;
1286 else {
1287 old_vlanid = sta->vlan_id;
1288 sta->vlan_id = radius_msg_get_vlanid(msg);
1289 }
1290 if (sta->vlan_id > 0 &&
1291 hostapd_get_vlan_id_ifname(hapd->conf->vlan,
1292 sta->vlan_id)) {
1293 hostapd_logger(hapd, sta->addr,
1294 HOSTAPD_MODULE_RADIUS,
1295 HOSTAPD_LEVEL_INFO,
1296 "VLAN ID %d", sta->vlan_id);
1297 } else if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_REQUIRED) {
1298 sta->eapol_sm->authFail = TRUE;
1299 hostapd_logger(hapd, sta->addr,
1300 HOSTAPD_MODULE_IEEE8021X,
1301 HOSTAPD_LEVEL_INFO, "authentication "
1302 "server did not include required VLAN "
1303 "ID in Access-Accept");
1304 break;
1305 }
1306
1307 ap_sta_bind_vlan(hapd, sta, old_vlanid);
1308
1309 /* RFC 3580, Ch. 3.17 */
1310 if (session_timeout_set && termination_action ==
1311 RADIUS_TERMINATION_ACTION_RADIUS_REQUEST) {
1312 sm->reAuthPeriod = session_timeout;
1313 } else if (session_timeout_set)
1314 ap_sta_session_timeout(hapd, sta, session_timeout);
1315
1316 sm->eap_if->aaaSuccess = TRUE;
1317 override_eapReq = 1;
1318 ieee802_1x_get_keys(hapd, sta, msg, req, shared_secret,
1319 shared_secret_len);
1320 ieee802_1x_store_radius_class(hapd, sta, msg);
1321 ieee802_1x_update_sta_identity(hapd, sta, msg);
1322 if (sm->eap_if->eapKeyAvailable &&
1323 wpa_auth_pmksa_add(sta->wpa_sm, sm->eapol_key_crypt,
1324 session_timeout_set ?
1325 (int) session_timeout : -1, sm) == 0) {
1326 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
1327 HOSTAPD_LEVEL_DEBUG,
1328 "Added PMKSA cache entry");
1329 }
1330 break;
1331 case RADIUS_CODE_ACCESS_REJECT:
1332 sm->eap_if->aaaFail = TRUE;
1333 override_eapReq = 1;
1334 break;
1335 case RADIUS_CODE_ACCESS_CHALLENGE:
1336 sm->eap_if->aaaEapReq = TRUE;
1337 if (session_timeout_set) {
1338 /* RFC 2869, Ch. 2.3.2; RFC 3580, Ch. 3.17 */
1339 eap_timeout = session_timeout;
1340 } else
1341 eap_timeout = 30;
1342 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
1343 HOSTAPD_LEVEL_DEBUG,
1344 "using EAP timeout of %d seconds%s",
1345 eap_timeout,
1346 session_timeout_set ? " (from RADIUS)" : "");
1347 eloop_cancel_timeout(ieee802_1x_eap_timeout, sta, NULL);
1348 eloop_register_timeout(eap_timeout, 0, ieee802_1x_eap_timeout,
1349 sta, NULL);
1350 sm->eap_if->eapTimeout = FALSE;
1351 break;
1352 }
1353
1354 ieee802_1x_decapsulate_radius(hapd, sta);
1355 if (override_eapReq)
1356 sm->eap_if->aaaEapReq = FALSE;
1357
1358 eapol_auth_step(sm);
1359
1360 return RADIUS_RX_QUEUED;
1361 }
1362
1363
1364 void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta)
1365 {
1366 struct eapol_state_machine *sm = sta->eapol_sm;
1367 if (sm == NULL)
1368 return;
1369
1370 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1371 HOSTAPD_LEVEL_DEBUG, "aborting authentication");
1372
1373 if (sm->last_recv_radius) {
1374 radius_msg_free(sm->last_recv_radius);
1375 os_free(sm->last_recv_radius);
1376 sm->last_recv_radius = NULL;
1377 }
1378 }
1379
1380
1381 #ifdef HOSTAPD_DUMP_STATE
1382 static void fprint_char(FILE *f, char c)
1383 {
1384 if (c >= 32 && c < 127)
1385 fprintf(f, "%c", c);
1386 else
1387 fprintf(f, "<%02x>", c);
1388 }
1389
1390
1391 void ieee802_1x_dump_state(FILE *f, const char *prefix, struct sta_info *sta)
1392 {
1393 struct eapol_state_machine *sm = sta->eapol_sm;
1394 if (sm == NULL)
1395 return;
1396
1397 fprintf(f, "%sIEEE 802.1X:\n", prefix);
1398
1399 if (sm->identity) {
1400 size_t i;
1401 fprintf(f, "%sidentity=", prefix);
1402 for (i = 0; i < sm->identity_len; i++)
1403 fprint_char(f, sm->identity[i]);
1404 fprintf(f, "\n");
1405 }
1406
1407 fprintf(f, "%slast EAP type: Authentication Server: %d (%s) "
1408 "Supplicant: %d (%s)\n", prefix,
1409 sm->eap_type_authsrv, eap_type_text(sm->eap_type_authsrv),
1410 sm->eap_type_supp, eap_type_text(sm->eap_type_supp));
1411
1412 fprintf(f, "%scached_packets=%s\n", prefix,
1413 sm->last_recv_radius ? "[RX RADIUS]" : "");
1414
1415 eapol_auth_dump_state(f, prefix, sm);
1416 }
1417 #endif /* HOSTAPD_DUMP_STATE */
1418
1419
1420 static int ieee802_1x_rekey_broadcast(struct hostapd_data *hapd)
1421 {
1422 if (hapd->conf->default_wep_key_len < 1)
1423 return 0;
1424
1425 os_free(hapd->default_wep_key);
1426 hapd->default_wep_key = os_malloc(hapd->conf->default_wep_key_len);
1427 if (hapd->default_wep_key == NULL ||
1428 os_get_random(hapd->default_wep_key,
1429 hapd->conf->default_wep_key_len)) {
1430 printf("Could not generate random WEP key.\n");
1431 os_free(hapd->default_wep_key);
1432 hapd->default_wep_key = NULL;
1433 return -1;
1434 }
1435
1436 wpa_hexdump_key(MSG_DEBUG, "IEEE 802.1X: New default WEP key",
1437 hapd->default_wep_key,
1438 hapd->conf->default_wep_key_len);
1439
1440 return 0;
1441 }
1442
1443
1444 static int ieee802_1x_sta_key_available(struct hostapd_data *hapd,
1445 struct sta_info *sta, void *ctx)
1446 {
1447 if (sta->eapol_sm) {
1448 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1449 eapol_auth_step(sta->eapol_sm);
1450 }
1451 return 0;
1452 }
1453
1454
1455 static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx)
1456 {
1457 struct hostapd_data *hapd = eloop_ctx;
1458
1459 if (hapd->default_wep_key_idx >= 3)
1460 hapd->default_wep_key_idx =
1461 hapd->conf->individual_wep_key_len > 0 ? 1 : 0;
1462 else
1463 hapd->default_wep_key_idx++;
1464
1465 wpa_printf(MSG_DEBUG, "IEEE 802.1X: New default WEP key index %d",
1466 hapd->default_wep_key_idx);
1467
1468 if (ieee802_1x_rekey_broadcast(hapd)) {
1469 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
1470 HOSTAPD_LEVEL_WARNING, "failed to generate a "
1471 "new broadcast key");
1472 os_free(hapd->default_wep_key);
1473 hapd->default_wep_key = NULL;
1474 return;
1475 }
1476
1477 /* TODO: Could setup key for RX here, but change default TX keyid only
1478 * after new broadcast key has been sent to all stations. */
1479 if (hostapd_set_encryption(hapd->conf->iface, hapd, "WEP", NULL,
1480 hapd->default_wep_key_idx,
1481 hapd->default_wep_key,
1482 hapd->conf->default_wep_key_len, 1)) {
1483 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
1484 HOSTAPD_LEVEL_WARNING, "failed to configure a "
1485 "new broadcast key");
1486 os_free(hapd->default_wep_key);
1487 hapd->default_wep_key = NULL;
1488 return;
1489 }
1490
1491 ap_for_each_sta(hapd, ieee802_1x_sta_key_available, NULL);
1492
1493 if (hapd->conf->wep_rekeying_period > 0) {
1494 eloop_register_timeout(hapd->conf->wep_rekeying_period, 0,
1495 ieee802_1x_rekey, hapd, NULL);
1496 }
1497 }
1498
1499
1500 static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type,
1501 const u8 *data, size_t datalen)
1502 {
1503 ieee802_1x_send(ctx, sta_ctx, type, data, datalen);
1504 }
1505
1506
1507 static void ieee802_1x_aaa_send(void *ctx, void *sta_ctx,
1508 const u8 *data, size_t datalen)
1509 {
1510 struct hostapd_data *hapd = ctx;
1511 struct sta_info *sta = sta_ctx;
1512
1513 ieee802_1x_encapsulate_radius(hapd, sta, data, datalen);
1514 }
1515
1516
1517 static void _ieee802_1x_finished(void *ctx, void *sta_ctx, int success,
1518 int preauth)
1519 {
1520 struct hostapd_data *hapd = ctx;
1521 struct sta_info *sta = sta_ctx;
1522 if (preauth)
1523 rsn_preauth_finished(hapd, sta, success);
1524 else
1525 ieee802_1x_finished(hapd, sta, success);
1526 }
1527
1528
1529 static int ieee802_1x_get_eap_user(void *ctx, const u8 *identity,
1530 size_t identity_len, int phase2,
1531 struct eap_user *user)
1532 {
1533 struct hostapd_data *hapd = ctx;
1534 const struct hostapd_eap_user *eap_user;
1535 int i, count;
1536
1537 eap_user = hostapd_get_eap_user(hapd->conf, identity,
1538 identity_len, phase2);
1539 if (eap_user == NULL)
1540 return -1;
1541
1542 os_memset(user, 0, sizeof(*user));
1543 user->phase2 = phase2;
1544 count = EAP_USER_MAX_METHODS;
1545 if (count > EAP_MAX_METHODS)
1546 count = EAP_MAX_METHODS;
1547 for (i = 0; i < count; i++) {
1548 user->methods[i].vendor = eap_user->methods[i].vendor;
1549 user->methods[i].method = eap_user->methods[i].method;
1550 }
1551
1552 if (eap_user->password) {
1553 user->password = os_malloc(eap_user->password_len);
1554 if (user->password == NULL)
1555 return -1;
1556 os_memcpy(user->password, eap_user->password,
1557 eap_user->password_len);
1558 user->password_len = eap_user->password_len;
1559 }
1560 user->force_version = eap_user->force_version;
1561 user->ttls_auth = eap_user->ttls_auth;
1562
1563 return 0;
1564 }
1565
1566
1567 static int ieee802_1x_sta_entry_alive(void *ctx, const u8 *addr)
1568 {
1569 struct hostapd_data *hapd = ctx;
1570 struct sta_info *sta;
1571 sta = ap_get_sta(hapd, addr);
1572 if (sta == NULL || sta->eapol_sm == NULL)
1573 return 0;
1574 return 1;
1575 }
1576
1577
1578 static void ieee802_1x_logger(void *ctx, const u8 *addr,
1579 eapol_logger_level level, const char *txt)
1580 {
1581 struct hostapd_data *hapd = ctx;
1582 int hlevel;
1583
1584 switch (level) {
1585 case EAPOL_LOGGER_WARNING:
1586 hlevel = HOSTAPD_LEVEL_WARNING;
1587 break;
1588 case EAPOL_LOGGER_INFO:
1589 hlevel = HOSTAPD_LEVEL_INFO;
1590 break;
1591 case EAPOL_LOGGER_DEBUG:
1592 default:
1593 hlevel = HOSTAPD_LEVEL_DEBUG;
1594 break;
1595 }
1596
1597 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE8021X, hlevel, "%s",
1598 txt);
1599 }
1600
1601
1602 static void ieee802_1x_set_port_authorized(void *ctx, void *sta_ctx,
1603 int authorized)
1604 {
1605 struct hostapd_data *hapd = ctx;
1606 struct sta_info *sta = sta_ctx;
1607 ieee802_1x_set_sta_authorized(hapd, sta, authorized);
1608 }
1609
1610
1611 static void _ieee802_1x_abort_auth(void *ctx, void *sta_ctx)
1612 {
1613 struct hostapd_data *hapd = ctx;
1614 struct sta_info *sta = sta_ctx;
1615 ieee802_1x_abort_auth(hapd, sta);
1616 }
1617
1618
1619 static void _ieee802_1x_tx_key(void *ctx, void *sta_ctx)
1620 {
1621 struct hostapd_data *hapd = ctx;
1622 struct sta_info *sta = sta_ctx;
1623 ieee802_1x_tx_key(hapd, sta);
1624 }
1625
1626
1627 int ieee802_1x_init(struct hostapd_data *hapd)
1628 {
1629 int i;
1630 struct eapol_auth_config conf;
1631 struct eapol_auth_cb cb;
1632
1633 os_memset(&conf, 0, sizeof(conf));
1634 conf.hapd = hapd;
1635 conf.eap_reauth_period = hapd->conf->eap_reauth_period;
1636 conf.wpa = hapd->conf->wpa;
1637 conf.individual_wep_key_len = hapd->conf->individual_wep_key_len;
1638 conf.eap_server = hapd->conf->eap_server;
1639 conf.ssl_ctx = hapd->ssl_ctx;
1640 conf.eap_sim_db_priv = hapd->eap_sim_db_priv;
1641 conf.eap_req_id_text = hapd->conf->eap_req_id_text;
1642 conf.eap_req_id_text_len = hapd->conf->eap_req_id_text_len;
1643 conf.pac_opaque_encr_key = hapd->conf->pac_opaque_encr_key;
1644 conf.eap_fast_a_id = hapd->conf->eap_fast_a_id;
1645 conf.eap_fast_a_id_len = hapd->conf->eap_fast_a_id_len;
1646 conf.eap_fast_a_id_info = hapd->conf->eap_fast_a_id_info;
1647 conf.eap_fast_prov = hapd->conf->eap_fast_prov;
1648 conf.pac_key_lifetime = hapd->conf->pac_key_lifetime;
1649 conf.pac_key_refresh_time = hapd->conf->pac_key_refresh_time;
1650 conf.eap_sim_aka_result_ind = hapd->conf->eap_sim_aka_result_ind;
1651 conf.tnc = hapd->conf->tnc;
1652 conf.wps = hapd->wps;
1653
1654 os_memset(&cb, 0, sizeof(cb));
1655 cb.eapol_send = ieee802_1x_eapol_send;
1656 cb.aaa_send = ieee802_1x_aaa_send;
1657 cb.finished = _ieee802_1x_finished;
1658 cb.get_eap_user = ieee802_1x_get_eap_user;
1659 cb.sta_entry_alive = ieee802_1x_sta_entry_alive;
1660 cb.logger = ieee802_1x_logger;
1661 cb.set_port_authorized = ieee802_1x_set_port_authorized;
1662 cb.abort_auth = _ieee802_1x_abort_auth;
1663 cb.tx_key = _ieee802_1x_tx_key;
1664
1665 hapd->eapol_auth = eapol_auth_init(&conf, &cb);
1666 if (hapd->eapol_auth == NULL)
1667 return -1;
1668
1669 if ((hapd->conf->ieee802_1x || hapd->conf->wpa) &&
1670 hostapd_set_ieee8021x(hapd->conf->iface, hapd, 1))
1671 return -1;
1672
1673 if (radius_client_register(hapd->radius, RADIUS_AUTH,
1674 ieee802_1x_receive_auth, hapd))
1675 return -1;
1676
1677 if (hapd->conf->default_wep_key_len) {
1678 hostapd_set_privacy(hapd, 1);
1679
1680 for (i = 0; i < 4; i++)
1681 hostapd_set_encryption(hapd->conf->iface, hapd,
1682 "none", NULL, i, NULL, 0, 0);
1683
1684 ieee802_1x_rekey(hapd, NULL);
1685
1686 if (hapd->default_wep_key == NULL)
1687 return -1;
1688 }
1689
1690 return 0;
1691 }
1692
1693
1694 void ieee802_1x_deinit(struct hostapd_data *hapd)
1695 {
1696 eloop_cancel_timeout(ieee802_1x_rekey, hapd, NULL);
1697
1698 if (hapd->driver != NULL &&
1699 (hapd->conf->ieee802_1x || hapd->conf->wpa))
1700 hostapd_set_ieee8021x(hapd->conf->iface, hapd, 0);
1701
1702 eapol_auth_deinit(hapd->eapol_auth);
1703 hapd->eapol_auth = NULL;
1704 }
1705
1706
1707 int ieee802_1x_reconfig(struct hostapd_data *hapd,
1708 struct hostapd_config *oldconf,
1709 struct hostapd_bss_config *oldbss)
1710 {
1711 ieee802_1x_deinit(hapd);
1712 return ieee802_1x_init(hapd);
1713 }
1714
1715
1716 int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
1717 u8 *buf, size_t len, int ack)
1718 {
1719 struct ieee80211_hdr *hdr;
1720 struct ieee802_1x_hdr *xhdr;
1721 struct ieee802_1x_eapol_key *key;
1722 u8 *pos;
1723 const unsigned char rfc1042_hdr[ETH_ALEN] =
1724 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
1725
1726 if (sta == NULL)
1727 return -1;
1728 if (len < sizeof(*hdr) + sizeof(rfc1042_hdr) + 2 + sizeof(*xhdr))
1729 return 0;
1730
1731 hdr = (struct ieee80211_hdr *) buf;
1732 pos = (u8 *) (hdr + 1);
1733 if (os_memcmp(pos, rfc1042_hdr, sizeof(rfc1042_hdr)) != 0)
1734 return 0;
1735 pos += sizeof(rfc1042_hdr);
1736 if (WPA_GET_BE16(pos) != ETH_P_PAE)
1737 return 0;
1738 pos += 2;
1739
1740 xhdr = (struct ieee802_1x_hdr *) pos;
1741 pos += sizeof(*xhdr);
1742
1743 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR " TX status - version=%d "
1744 "type=%d length=%d - ack=%d",
1745 MAC2STR(sta->addr), xhdr->version, xhdr->type,
1746 be_to_host16(xhdr->length), ack);
1747
1748 /* EAPOL EAP-Packet packets are eventually re-sent by either Supplicant
1749 * or Authenticator state machines, but EAPOL-Key packets are not
1750 * retransmitted in case of failure. Try to re-sent failed EAPOL-Key
1751 * packets couple of times because otherwise STA keys become
1752 * unsynchronized with AP. */
1753 if (xhdr->type == IEEE802_1X_TYPE_EAPOL_KEY && !ack &&
1754 pos + sizeof(*key) <= buf + len) {
1755 key = (struct ieee802_1x_eapol_key *) pos;
1756 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1757 HOSTAPD_LEVEL_DEBUG, "did not Ack EAPOL-Key "
1758 "frame (%scast index=%d)",
1759 key->key_index & BIT(7) ? "uni" : "broad",
1760 key->key_index & ~BIT(7));
1761 /* TODO: re-send EAPOL-Key couple of times (with short delay
1762 * between them?). If all attempt fail, report error and
1763 * deauthenticate STA so that it will get new keys when
1764 * authenticating again (e.g., after returning in range).
1765 * Separate limit/transmit state needed both for unicast and
1766 * broadcast keys(?) */
1767 }
1768 /* TODO: could move unicast key configuration from ieee802_1x_tx_key()
1769 * to here and change the key only if the EAPOL-Key packet was Acked.
1770 */
1771
1772 return 1;
1773 }
1774
1775
1776 u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len)
1777 {
1778 if (sm == NULL || sm->identity == NULL)
1779 return NULL;
1780
1781 *len = sm->identity_len;
1782 return sm->identity;
1783 }
1784
1785
1786 u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len,
1787 int idx)
1788 {
1789 if (sm == NULL || sm->radius_class.attr == NULL ||
1790 idx >= (int) sm->radius_class.count)
1791 return NULL;
1792
1793 *len = sm->radius_class.attr[idx].len;
1794 return sm->radius_class.attr[idx].data;
1795 }
1796
1797
1798 const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len)
1799 {
1800 if (sm == NULL)
1801 return NULL;
1802
1803 *len = sm->eap_if->eapKeyDataLen;
1804 return sm->eap_if->eapKeyData;
1805 }
1806
1807
1808 void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm,
1809 int enabled)
1810 {
1811 if (sm == NULL)
1812 return;
1813 sm->eap_if->portEnabled = enabled ? TRUE : FALSE;
1814 eapol_auth_step(sm);
1815 }
1816
1817
1818 void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm,
1819 int valid)
1820 {
1821 if (sm == NULL)
1822 return;
1823 sm->portValid = valid ? TRUE : FALSE;
1824 eapol_auth_step(sm);
1825 }
1826
1827
1828 void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, int pre_auth)
1829 {
1830 if (sm == NULL)
1831 return;
1832 if (pre_auth)
1833 sm->flags |= EAPOL_SM_PREAUTH;
1834 else
1835 sm->flags &= ~EAPOL_SM_PREAUTH;
1836 }
1837
1838
1839 static const char * bool_txt(Boolean bool)
1840 {
1841 return bool ? "TRUE" : "FALSE";
1842 }
1843
1844
1845 int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
1846 {
1847 /* TODO */
1848 return 0;
1849 }
1850
1851
1852 int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
1853 char *buf, size_t buflen)
1854 {
1855 int len = 0, ret;
1856 struct eapol_state_machine *sm = sta->eapol_sm;
1857
1858 if (sm == NULL)
1859 return 0;
1860
1861 ret = os_snprintf(buf + len, buflen - len,
1862 "dot1xPaePortNumber=%d\n"
1863 "dot1xPaePortProtocolVersion=%d\n"
1864 "dot1xPaePortCapabilities=1\n"
1865 "dot1xPaePortInitialize=%d\n"
1866 "dot1xPaePortReauthenticate=FALSE\n",
1867 sta->aid,
1868 EAPOL_VERSION,
1869 sm->initialize);
1870 if (ret < 0 || (size_t) ret >= buflen - len)
1871 return len;
1872 len += ret;
1873
1874 /* dot1xAuthConfigTable */
1875 ret = os_snprintf(buf + len, buflen - len,
1876 "dot1xAuthPaeState=%d\n"
1877 "dot1xAuthBackendAuthState=%d\n"
1878 "dot1xAuthAdminControlledDirections=%d\n"
1879 "dot1xAuthOperControlledDirections=%d\n"
1880 "dot1xAuthAuthControlledPortStatus=%d\n"
1881 "dot1xAuthAuthControlledPortControl=%d\n"
1882 "dot1xAuthQuietPeriod=%u\n"
1883 "dot1xAuthServerTimeout=%u\n"
1884 "dot1xAuthReAuthPeriod=%u\n"
1885 "dot1xAuthReAuthEnabled=%s\n"
1886 "dot1xAuthKeyTxEnabled=%s\n",
1887 sm->auth_pae_state + 1,
1888 sm->be_auth_state + 1,
1889 sm->adminControlledDirections,
1890 sm->operControlledDirections,
1891 sm->authPortStatus,
1892 sm->portControl,
1893 sm->quietPeriod,
1894 sm->serverTimeout,
1895 sm->reAuthPeriod,
1896 bool_txt(sm->reAuthEnabled),
1897 bool_txt(sm->keyTxEnabled));
1898 if (ret < 0 || (size_t) ret >= buflen - len)
1899 return len;
1900 len += ret;
1901
1902 /* dot1xAuthStatsTable */
1903 ret = os_snprintf(buf + len, buflen - len,
1904 "dot1xAuthEapolFramesRx=%u\n"
1905 "dot1xAuthEapolFramesTx=%u\n"
1906 "dot1xAuthEapolStartFramesRx=%u\n"
1907 "dot1xAuthEapolLogoffFramesRx=%u\n"
1908 "dot1xAuthEapolRespIdFramesRx=%u\n"
1909 "dot1xAuthEapolRespFramesRx=%u\n"
1910 "dot1xAuthEapolReqIdFramesTx=%u\n"
1911 "dot1xAuthEapolReqFramesTx=%u\n"
1912 "dot1xAuthInvalidEapolFramesRx=%u\n"
1913 "dot1xAuthEapLengthErrorFramesRx=%u\n"
1914 "dot1xAuthLastEapolFrameVersion=%u\n"
1915 "dot1xAuthLastEapolFrameSource=" MACSTR "\n",
1916 sm->dot1xAuthEapolFramesRx,
1917 sm->dot1xAuthEapolFramesTx,
1918 sm->dot1xAuthEapolStartFramesRx,
1919 sm->dot1xAuthEapolLogoffFramesRx,
1920 sm->dot1xAuthEapolRespIdFramesRx,
1921 sm->dot1xAuthEapolRespFramesRx,
1922 sm->dot1xAuthEapolReqIdFramesTx,
1923 sm->dot1xAuthEapolReqFramesTx,
1924 sm->dot1xAuthInvalidEapolFramesRx,
1925 sm->dot1xAuthEapLengthErrorFramesRx,
1926 sm->dot1xAuthLastEapolFrameVersion,
1927 MAC2STR(sm->addr));
1928 if (ret < 0 || (size_t) ret >= buflen - len)
1929 return len;
1930 len += ret;
1931
1932 /* dot1xAuthDiagTable */
1933 ret = os_snprintf(buf + len, buflen - len,
1934 "dot1xAuthEntersConnecting=%u\n"
1935 "dot1xAuthEapLogoffsWhileConnecting=%u\n"
1936 "dot1xAuthEntersAuthenticating=%u\n"
1937 "dot1xAuthAuthSuccessesWhileAuthenticating=%u\n"
1938 "dot1xAuthAuthTimeoutsWhileAuthenticating=%u\n"
1939 "dot1xAuthAuthFailWhileAuthenticating=%u\n"
1940 "dot1xAuthAuthEapStartsWhileAuthenticating=%u\n"
1941 "dot1xAuthAuthEapLogoffWhileAuthenticating=%u\n"
1942 "dot1xAuthAuthReauthsWhileAuthenticated=%u\n"
1943 "dot1xAuthAuthEapStartsWhileAuthenticated=%u\n"
1944 "dot1xAuthAuthEapLogoffWhileAuthenticated=%u\n"
1945 "dot1xAuthBackendResponses=%u\n"
1946 "dot1xAuthBackendAccessChallenges=%u\n"
1947 "dot1xAuthBackendOtherRequestsToSupplicant=%u\n"
1948 "dot1xAuthBackendAuthSuccesses=%u\n"
1949 "dot1xAuthBackendAuthFails=%u\n",
1950 sm->authEntersConnecting,
1951 sm->authEapLogoffsWhileConnecting,
1952 sm->authEntersAuthenticating,
1953 sm->authAuthSuccessesWhileAuthenticating,
1954 sm->authAuthTimeoutsWhileAuthenticating,
1955 sm->authAuthFailWhileAuthenticating,
1956 sm->authAuthEapStartsWhileAuthenticating,
1957 sm->authAuthEapLogoffWhileAuthenticating,
1958 sm->authAuthReauthsWhileAuthenticated,
1959 sm->authAuthEapStartsWhileAuthenticated,
1960 sm->authAuthEapLogoffWhileAuthenticated,
1961 sm->backendResponses,
1962 sm->backendAccessChallenges,
1963 sm->backendOtherRequestsToSupplicant,
1964 sm->backendAuthSuccesses,
1965 sm->backendAuthFails);
1966 if (ret < 0 || (size_t) ret >= buflen - len)
1967 return len;
1968 len += ret;
1969
1970 /* dot1xAuthSessionStatsTable */
1971 ret = os_snprintf(buf + len, buflen - len,
1972 /* TODO: dot1xAuthSessionOctetsRx */
1973 /* TODO: dot1xAuthSessionOctetsTx */
1974 /* TODO: dot1xAuthSessionFramesRx */
1975 /* TODO: dot1xAuthSessionFramesTx */
1976 "dot1xAuthSessionId=%08X-%08X\n"
1977 "dot1xAuthSessionAuthenticMethod=%d\n"
1978 "dot1xAuthSessionTime=%u\n"
1979 "dot1xAuthSessionTerminateCause=999\n"
1980 "dot1xAuthSessionUserName=%s\n",
1981 sta->acct_session_id_hi, sta->acct_session_id_lo,
1982 (wpa_key_mgmt_wpa_ieee8021x(
1983 wpa_auth_sta_key_mgmt(sta->wpa_sm))) ?
1984 1 : 2,
1985 (unsigned int) (time(NULL) -
1986 sta->acct_session_start),
1987 sm->identity);
1988 if (ret < 0 || (size_t) ret >= buflen - len)
1989 return len;
1990 len += ret;
1991
1992 return len;
1993 }
1994
1995
1996 static void ieee802_1x_finished(struct hostapd_data *hapd,
1997 struct sta_info *sta, int success)
1998 {
1999 const u8 *key;
2000 size_t len;
2001 /* TODO: get PMKLifetime from WPA parameters */
2002 static const int dot11RSNAConfigPMKLifetime = 43200;
2003
2004 key = ieee802_1x_get_key(sta->eapol_sm, &len);
2005 if (success && key && len >= PMK_LEN &&
2006 wpa_auth_pmksa_add(sta->wpa_sm, key, dot11RSNAConfigPMKLifetime,
2007 sta->eapol_sm) == 0) {
2008 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
2009 HOSTAPD_LEVEL_DEBUG,
2010 "Added PMKSA cache entry (IEEE 802.1X)");
2011 }
2012 }
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