?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Reduce differences between our VKERNEL and VKERNEL64 configurations.
[dragonfly.git] / contrib / hostapd / hostapd / ieee802_1x.c
blob7fd80280577c750ed2066b497d814c29a6ded412
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 #include "ieee802_11_defs.h"
34
35
36 static void ieee802_1x_finished(struct hostapd_data *hapd,
37 struct sta_info *sta, int success);
38
39
40 static void ieee802_1x_send(struct hostapd_data *hapd, struct sta_info *sta,
41 u8 type, const u8 *data, size_t datalen)
42 {
43 u8 *buf;
44 struct ieee802_1x_hdr *xhdr;
45 size_t len;
46 int encrypt = 0;
47
48 len = sizeof(*xhdr) + datalen;
49 buf = os_zalloc(len);
50 if (buf == NULL) {
51 wpa_printf(MSG_ERROR, "malloc() failed for "
52 "ieee802_1x_send(len=%lu)",
53 (unsigned long) len);
54 return;
55 }
56
57 xhdr = (struct ieee802_1x_hdr *) buf;
58 xhdr->version = hapd->conf->eapol_version;
59 xhdr->type = type;
60 xhdr->length = host_to_be16(datalen);
61
62 if (datalen > 0 && data != NULL)
63 os_memcpy(xhdr + 1, data, datalen);
64
65 if (wpa_auth_pairwise_set(sta->wpa_sm))
66 encrypt = 1;
67 if (sta->flags & WLAN_STA_PREAUTH) {
68 rsn_preauth_send(hapd, sta, buf, len);
69 } else {
70 hostapd_send_eapol(hapd, sta->addr, buf, len, encrypt);
71 }
72
73 os_free(buf);
74 }
75
76
77 void ieee802_1x_set_sta_authorized(struct hostapd_data *hapd,
78 struct sta_info *sta, int authorized)
79 {
80 int res;
81
82 if (sta->flags & WLAN_STA_PREAUTH)
83 return;
84
85 if (authorized) {
86 sta->flags |= WLAN_STA_AUTHORIZED;
87 res = hostapd_sta_set_flags(hapd, sta->addr, sta->flags,
88 WLAN_STA_AUTHORIZED, ~0);
89 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
90 HOSTAPD_LEVEL_DEBUG, "authorizing port");
91 } else {
92 sta->flags &= ~WLAN_STA_AUTHORIZED;
93 res = hostapd_sta_set_flags(hapd, sta->addr, sta->flags,
94 0, ~WLAN_STA_AUTHORIZED);
95 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
96 HOSTAPD_LEVEL_DEBUG, "unauthorizing port");
97 }
98
99 if (res && errno != ENOENT) {
100 printf("Could not set station " MACSTR " flags for kernel "
101 "driver (errno=%d).\n", MAC2STR(sta->addr), errno);
102 }
103
104 if (authorized)
105 accounting_sta_start(hapd, sta);
106 }
107
108
109 static void ieee802_1x_tx_key_one(struct hostapd_data *hapd,
110 struct sta_info *sta,
111 int idx, int broadcast,
112 u8 *key_data, size_t key_len)
113 {
114 u8 *buf, *ekey;
115 struct ieee802_1x_hdr *hdr;
116 struct ieee802_1x_eapol_key *key;
117 size_t len, ekey_len;
118 struct eapol_state_machine *sm = sta->eapol_sm;
119
120 if (sm == NULL)
121 return;
122
123 len = sizeof(*key) + key_len;
124 buf = os_zalloc(sizeof(*hdr) + len);
125 if (buf == NULL)
126 return;
127
128 hdr = (struct ieee802_1x_hdr *) buf;
129 key = (struct ieee802_1x_eapol_key *) (hdr + 1);
130 key->type = EAPOL_KEY_TYPE_RC4;
131 key->key_length = htons(key_len);
132 wpa_get_ntp_timestamp(key->replay_counter);
133
134 if (os_get_random(key->key_iv, sizeof(key->key_iv))) {
135 wpa_printf(MSG_ERROR, "Could not get random numbers");
136 os_free(buf);
137 return;
138 }
139
140 key->key_index = idx | (broadcast ? 0 : BIT(7));
141 if (hapd->conf->eapol_key_index_workaround) {
142 /* According to some information, WinXP Supplicant seems to
143 * interpret bit7 as an indication whether the key is to be
144 * activated, so make it possible to enable workaround that
145 * sets this bit for all keys. */
146 key->key_index |= BIT(7);
147 }
148
149 /* Key is encrypted using "Key-IV + MSK[0..31]" as the RC4-key and
150 * MSK[32..63] is used to sign the message. */
151 if (sm->eap_if->eapKeyData == NULL || sm->eap_if->eapKeyDataLen < 64) {
152 wpa_printf(MSG_ERROR, "No eapKeyData available for encrypting "
153 "and signing EAPOL-Key");
154 os_free(buf);
155 return;
156 }
157 os_memcpy((u8 *) (key + 1), key_data, key_len);
158 ekey_len = sizeof(key->key_iv) + 32;
159 ekey = os_malloc(ekey_len);
160 if (ekey == NULL) {
161 wpa_printf(MSG_ERROR, "Could not encrypt key");
162 os_free(buf);
163 return;
164 }
165 os_memcpy(ekey, key->key_iv, sizeof(key->key_iv));
166 os_memcpy(ekey + sizeof(key->key_iv), sm->eap_if->eapKeyData, 32);
167 rc4_skip(ekey, ekey_len, 0, (u8 *) (key + 1), key_len);
168 os_free(ekey);
169
170 /* This header is needed here for HMAC-MD5, but it will be regenerated
171 * in ieee802_1x_send() */
172 hdr->version = hapd->conf->eapol_version;
173 hdr->type = IEEE802_1X_TYPE_EAPOL_KEY;
174 hdr->length = host_to_be16(len);
175 hmac_md5(sm->eap_if->eapKeyData + 32, 32, buf, sizeof(*hdr) + len,
176 key->key_signature);
177
178 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key to " MACSTR
179 " (%s index=%d)", MAC2STR(sm->addr),
180 broadcast ? "broadcast" : "unicast", idx);
181 ieee802_1x_send(hapd, sta, IEEE802_1X_TYPE_EAPOL_KEY, (u8 *) key, len);
182 if (sta->eapol_sm)
183 sta->eapol_sm->dot1xAuthEapolFramesTx++;
184 os_free(buf);
185 }
186
187
188 static struct hostapd_wep_keys *
189 ieee802_1x_group_alloc(struct hostapd_data *hapd, const char *ifname)
190 {
191 struct hostapd_wep_keys *key;
192
193 key = os_zalloc(sizeof(*key));
194 if (key == NULL)
195 return NULL;
196
197 key->default_len = hapd->conf->default_wep_key_len;
198
199 if (key->idx >= hapd->conf->broadcast_key_idx_max ||
200 key->idx < hapd->conf->broadcast_key_idx_min)
201 key->idx = hapd->conf->broadcast_key_idx_min;
202 else
203 key->idx++;
204
205 if (!key->key[key->idx])
206 key->key[key->idx] = os_malloc(key->default_len);
207 if (key->key[key->idx] == NULL ||
208 os_get_random(key->key[key->idx], key->default_len)) {
209 printf("Could not generate random WEP key (dynamic VLAN).\n");
210 os_free(key->key[key->idx]);
211 key->key[key->idx] = NULL;
212 os_free(key);
213 return NULL;
214 }
215 key->len[key->idx] = key->default_len;
216
217 wpa_printf(MSG_DEBUG, "%s: Default WEP idx %d for dynamic VLAN\n",
218 ifname, key->idx);
219 wpa_hexdump_key(MSG_DEBUG, "Default WEP key (dynamic VLAN)",
220 key->key[key->idx], key->len[key->idx]);
221
222 if (hostapd_set_encryption(ifname, hapd, "WEP", NULL, key->idx,
223 key->key[key->idx], key->len[key->idx], 1))
224 printf("Could not set dynamic VLAN WEP encryption key.\n");
225
226 hostapd_set_ieee8021x(ifname, hapd, 1);
227
228 return key;
229 }
230
231
232 static struct hostapd_wep_keys *
233 ieee802_1x_get_group(struct hostapd_data *hapd, struct hostapd_ssid *ssid,
234 size_t vlan_id)
235 {
236 const char *ifname;
237
238 if (vlan_id == 0)
239 return &ssid->wep;
240
241 if (vlan_id <= ssid->max_dyn_vlan_keys && ssid->dyn_vlan_keys &&
242 ssid->dyn_vlan_keys[vlan_id])
243 return ssid->dyn_vlan_keys[vlan_id];
244
245 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Creating new group "
246 "state machine for VLAN ID %lu",
247 (unsigned long) vlan_id);
248
249 ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
250 if (ifname == NULL) {
251 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Unknown VLAN ID %lu - "
252 "cannot create group key state machine",
253 (unsigned long) vlan_id);
254 return NULL;
255 }
256
257 if (ssid->dyn_vlan_keys == NULL) {
258 int size = (vlan_id + 1) * sizeof(ssid->dyn_vlan_keys[0]);
259 ssid->dyn_vlan_keys = os_zalloc(size);
260 if (ssid->dyn_vlan_keys == NULL)
261 return NULL;
262 ssid->max_dyn_vlan_keys = vlan_id;
263 }
264
265 if (ssid->max_dyn_vlan_keys < vlan_id) {
266 struct hostapd_wep_keys **na;
267 int size = (vlan_id + 1) * sizeof(ssid->dyn_vlan_keys[0]);
268 na = os_realloc(ssid->dyn_vlan_keys, size);
269 if (na == NULL)
270 return NULL;
271 ssid->dyn_vlan_keys = na;
272 os_memset(&ssid->dyn_vlan_keys[ssid->max_dyn_vlan_keys + 1], 0,
273 (vlan_id - ssid->max_dyn_vlan_keys) *
274 sizeof(ssid->dyn_vlan_keys[0]));
275 ssid->max_dyn_vlan_keys = vlan_id;
276 }
277
278 ssid->dyn_vlan_keys[vlan_id] = ieee802_1x_group_alloc(hapd, ifname);
279
280 return ssid->dyn_vlan_keys[vlan_id];
281 }
282
283
284 void ieee802_1x_tx_key(struct hostapd_data *hapd, struct sta_info *sta)
285 {
286 struct hostapd_wep_keys *key = NULL;
287 struct eapol_state_machine *sm = sta->eapol_sm;
288 int vlan_id;
289
290 if (sm == NULL || !sm->eap_if->eapKeyData)
291 return;
292
293 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key(s) to " MACSTR,
294 MAC2STR(sta->addr));
295
296 vlan_id = sta->vlan_id;
297 if (vlan_id < 0 || vlan_id > MAX_VLAN_ID)
298 vlan_id = 0;
299
300 if (vlan_id) {
301 key = ieee802_1x_get_group(hapd, sta->ssid, vlan_id);
302 if (key && key->key[key->idx])
303 ieee802_1x_tx_key_one(hapd, sta, key->idx, 1,
304 key->key[key->idx],
305 key->len[key->idx]);
306 } else if (hapd->default_wep_key) {
307 ieee802_1x_tx_key_one(hapd, sta, hapd->default_wep_key_idx, 1,
308 hapd->default_wep_key,
309 hapd->conf->default_wep_key_len);
310 }
311
312 if (hapd->conf->individual_wep_key_len > 0) {
313 u8 *ikey;
314 ikey = os_malloc(hapd->conf->individual_wep_key_len);
315 if (ikey == NULL ||
316 os_get_random(ikey, hapd->conf->individual_wep_key_len)) {
317 wpa_printf(MSG_ERROR, "Could not generate random "
318 "individual WEP key.");
319 os_free(ikey);
320 return;
321 }
322
323 wpa_hexdump_key(MSG_DEBUG, "Individual WEP key",
324 ikey, hapd->conf->individual_wep_key_len);
325
326 ieee802_1x_tx_key_one(hapd, sta, 0, 0, ikey,
327 hapd->conf->individual_wep_key_len);
328
329 /* TODO: set encryption in TX callback, i.e., only after STA
330 * has ACKed EAPOL-Key frame */
331 if (hostapd_set_encryption(hapd->conf->iface, hapd, "WEP",
332 sta->addr, 0, ikey,
333 hapd->conf->individual_wep_key_len,
334 1)) {
335 wpa_printf(MSG_ERROR, "Could not set individual WEP "
336 "encryption.");
337 }
338
339 os_free(ikey);
340 }
341 }
342
343
344 const char *radius_mode_txt(struct hostapd_data *hapd)
345 {
346 if (hapd->iface->current_mode == NULL)
347 return "802.11";
348
349 switch (hapd->iface->current_mode->mode) {
350 case HOSTAPD_MODE_IEEE80211A:
351 return "802.11a";
352 case HOSTAPD_MODE_IEEE80211G:
353 return "802.11g";
354 case HOSTAPD_MODE_IEEE80211B:
355 default:
356 return "802.11b";
357 }
358 }
359
360
361 int radius_sta_rate(struct hostapd_data *hapd, struct sta_info *sta)
362 {
363 int i;
364 u8 rate = 0;
365
366 for (i = 0; i < sta->supported_rates_len; i++)
367 if ((sta->supported_rates[i] & 0x7f) > rate)
368 rate = sta->supported_rates[i] & 0x7f;
369
370 return rate;
371 }
372
373
374 static void ieee802_1x_learn_identity(struct hostapd_data *hapd,
375 struct eapol_state_machine *sm,
376 const u8 *eap, size_t len)
377 {
378 const u8 *identity;
379 size_t identity_len;
380
381 if (len <= sizeof(struct eap_hdr) ||
382 eap[sizeof(struct eap_hdr)] != EAP_TYPE_IDENTITY)
383 return;
384
385 identity = eap_get_identity(sm->eap, &identity_len);
386 if (identity == NULL)
387 return;
388
389 /* Save station identity for future RADIUS packets */
390 os_free(sm->identity);
391 sm->identity = os_malloc(identity_len + 1);
392 if (sm->identity == NULL) {
393 sm->identity_len = 0;
394 return;
395 }
396
397 os_memcpy(sm->identity, identity, identity_len);
398 sm->identity_len = identity_len;
399 sm->identity[identity_len] = '\0';
400 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
401 HOSTAPD_LEVEL_DEBUG, "STA identity '%s'", sm->identity);
402 sm->dot1xAuthEapolRespIdFramesRx++;
403 }
404
405
406 static void ieee802_1x_encapsulate_radius(struct hostapd_data *hapd,
407 struct sta_info *sta,
408 const u8 *eap, size_t len)
409 {
410 struct radius_msg *msg;
411 char buf[128];
412 struct eapol_state_machine *sm = sta->eapol_sm;
413
414 if (sm == NULL)
415 return;
416
417 ieee802_1x_learn_identity(hapd, sm, eap, len);
418
419 wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
420 "packet");
421
422 sm->radius_identifier = radius_client_get_id(hapd->radius);
423 msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
424 sm->radius_identifier);
425 if (msg == NULL) {
426 printf("Could not create net RADIUS packet\n");
427 return;
428 }
429
430 radius_msg_make_authenticator(msg, (u8 *) sta, sizeof(*sta));
431
432 if (sm->identity &&
433 !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
434 sm->identity, sm->identity_len)) {
435 printf("Could not add User-Name\n");
436 goto fail;
437 }
438
439 if (hapd->conf->own_ip_addr.af == AF_INET &&
440 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
441 (u8 *) &hapd->conf->own_ip_addr.u.v4, 4)) {
442 printf("Could not add NAS-IP-Address\n");
443 goto fail;
444 }
445
446 #ifdef CONFIG_IPV6
447 if (hapd->conf->own_ip_addr.af == AF_INET6 &&
448 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IPV6_ADDRESS,
449 (u8 *) &hapd->conf->own_ip_addr.u.v6, 16)) {
450 printf("Could not add NAS-IPv6-Address\n");
451 goto fail;
452 }
453 #endif /* CONFIG_IPV6 */
454
455 if (hapd->conf->nas_identifier &&
456 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IDENTIFIER,
457 (u8 *) hapd->conf->nas_identifier,
458 os_strlen(hapd->conf->nas_identifier))) {
459 printf("Could not add NAS-Identifier\n");
460 goto fail;
461 }
462
463 if (!radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT, sta->aid)) {
464 printf("Could not add NAS-Port\n");
465 goto fail;
466 }
467
468 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT ":%s",
469 MAC2STR(hapd->own_addr), hapd->conf->ssid.ssid);
470 buf[sizeof(buf) - 1] = '\0';
471 if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLED_STATION_ID,
472 (u8 *) buf, os_strlen(buf))) {
473 printf("Could not add Called-Station-Id\n");
474 goto fail;
475 }
476
477 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
478 MAC2STR(sta->addr));
479 buf[sizeof(buf) - 1] = '\0';
480 if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
481 (u8 *) buf, os_strlen(buf))) {
482 printf("Could not add Calling-Station-Id\n");
483 goto fail;
484 }
485
486 /* TODO: should probably check MTU from driver config; 2304 is max for
487 * IEEE 802.11, but use 1400 to avoid problems with too large packets
488 */
489 if (!radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
490 printf("Could not add Framed-MTU\n");
491 goto fail;
492 }
493
494 if (!radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
495 RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
496 printf("Could not add NAS-Port-Type\n");
497 goto fail;
498 }
499
500 if (sta->flags & WLAN_STA_PREAUTH) {
501 os_strlcpy(buf, "IEEE 802.11i Pre-Authentication",
502 sizeof(buf));
503 } else {
504 os_snprintf(buf, sizeof(buf), "CONNECT %d%sMbps %s",
505 radius_sta_rate(hapd, sta) / 2,
506 (radius_sta_rate(hapd, sta) & 1) ? ".5" : "",
507 radius_mode_txt(hapd));
508 buf[sizeof(buf) - 1] = '\0';
509 }
510 if (!radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
511 (u8 *) buf, os_strlen(buf))) {
512 printf("Could not add Connect-Info\n");
513 goto fail;
514 }
515
516 if (eap && !radius_msg_add_eap(msg, eap, len)) {
517 printf("Could not add EAP-Message\n");
518 goto fail;
519 }
520
521 /* State attribute must be copied if and only if this packet is
522 * Access-Request reply to the previous Access-Challenge */
523 if (sm->last_recv_radius && sm->last_recv_radius->hdr->code ==
524 RADIUS_CODE_ACCESS_CHALLENGE) {
525 int res = radius_msg_copy_attr(msg, sm->last_recv_radius,
526 RADIUS_ATTR_STATE);
527 if (res < 0) {
528 printf("Could not copy State attribute from previous "
529 "Access-Challenge\n");
530 goto fail;
531 }
532 if (res > 0) {
533 wpa_printf(MSG_DEBUG, "Copied RADIUS State Attribute");
534 }
535 }
536
537 radius_client_send(hapd->radius, msg, RADIUS_AUTH, sta->addr);
538 return;
539
540 fail:
541 radius_msg_free(msg);
542 os_free(msg);
543 }
544
545
546 char *eap_type_text(u8 type)
547 {
548 switch (type) {
549 case EAP_TYPE_IDENTITY: return "Identity";
550 case EAP_TYPE_NOTIFICATION: return "Notification";
551 case EAP_TYPE_NAK: return "Nak";
552 case EAP_TYPE_MD5: return "MD5-Challenge";
553 case EAP_TYPE_OTP: return "One-Time Password";
554 case EAP_TYPE_GTC: return "Generic Token Card";
555 case EAP_TYPE_TLS: return "TLS";
556 case EAP_TYPE_TTLS: return "TTLS";
557 case EAP_TYPE_PEAP: return "PEAP";
558 case EAP_TYPE_SIM: return "SIM";
559 case EAP_TYPE_FAST: return "FAST";
560 case EAP_TYPE_SAKE: return "SAKE";
561 case EAP_TYPE_PSK: return "PSK";
562 case EAP_TYPE_PAX: return "PAX";
563 default: return "Unknown";
564 }
565 }
566
567
568 static void handle_eap_response(struct hostapd_data *hapd,
569 struct sta_info *sta, struct eap_hdr *eap,
570 size_t len)
571 {
572 u8 type, *data;
573 struct eapol_state_machine *sm = sta->eapol_sm;
574 if (sm == NULL)
575 return;
576
577 data = (u8 *) (eap + 1);
578
579 if (len < sizeof(*eap) + 1) {
580 printf("handle_eap_response: too short response data\n");
581 return;
582 }
583
584 sm->eap_type_supp = type = data[0];
585
586 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
587 HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
588 "id=%d len=%d) from STA: EAP Response-%s (%d)",
589 eap->code, eap->identifier, be_to_host16(eap->length),
590 eap_type_text(type), type);
591
592 sm->dot1xAuthEapolRespFramesRx++;
593
594 wpabuf_free(sm->eap_if->eapRespData);
595 sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
596 sm->eapolEap = TRUE;
597 }
598
599
600 /* Process incoming EAP packet from Supplicant */
601 static void handle_eap(struct hostapd_data *hapd, struct sta_info *sta,
602 u8 *buf, size_t len)
603 {
604 struct eap_hdr *eap;
605 u16 eap_len;
606
607 if (len < sizeof(*eap)) {
608 printf(" too short EAP packet\n");
609 return;
610 }
611
612 eap = (struct eap_hdr *) buf;
613
614 eap_len = be_to_host16(eap->length);
615 wpa_printf(MSG_DEBUG, "EAP: code=%d identifier=%d length=%d",
616 eap->code, eap->identifier, eap_len);
617 if (eap_len < sizeof(*eap)) {
618 wpa_printf(MSG_DEBUG, " Invalid EAP length");
619 return;
620 } else if (eap_len > len) {
621 wpa_printf(MSG_DEBUG, " Too short frame to contain this EAP "
622 "packet");
623 return;
624 } else if (eap_len < len) {
625 wpa_printf(MSG_DEBUG, " Ignoring %lu extra bytes after EAP "
626 "packet", (unsigned long) len - eap_len);
627 }
628
629 switch (eap->code) {
630 case EAP_CODE_REQUEST:
631 wpa_printf(MSG_DEBUG, " (request)");
632 return;
633 case EAP_CODE_RESPONSE:
634 wpa_printf(MSG_DEBUG, " (response)");
635 handle_eap_response(hapd, sta, eap, eap_len);
636 break;
637 case EAP_CODE_SUCCESS:
638 wpa_printf(MSG_DEBUG, " (success)");
639 return;
640 case EAP_CODE_FAILURE:
641 wpa_printf(MSG_DEBUG, " (failure)");
642 return;
643 default:
644 wpa_printf(MSG_DEBUG, " (unknown code)");
645 return;
646 }
647 }
648
649
650 /**
651 * ieee802_1x_receive - Process the EAPOL frames from the Supplicant
652 * @hapd: hostapd BSS data
653 * @sa: Source address (sender of the EAPOL frame)
654 * @buf: EAPOL frame
655 * @len: Length of buf in octets
656 *
657 * This function is called for each incoming EAPOL frame from the interface
658 */
659 void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf,
660 size_t len)
661 {
662 struct sta_info *sta;
663 struct ieee802_1x_hdr *hdr;
664 struct ieee802_1x_eapol_key *key;
665 u16 datalen;
666 struct rsn_pmksa_cache_entry *pmksa;
667
668 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa &&
669 !hapd->conf->wps_state)
670 return;
671
672 wpa_printf(MSG_DEBUG, "IEEE 802.1X: %lu bytes from " MACSTR,
673 (unsigned long) len, MAC2STR(sa));
674 sta = ap_get_sta(hapd, sa);
675 if (!sta) {
676 printf(" no station information available\n");
677 return;
678 }
679
680 if (len < sizeof(*hdr)) {
681 printf(" too short IEEE 802.1X packet\n");
682 return;
683 }
684
685 hdr = (struct ieee802_1x_hdr *) buf;
686 datalen = be_to_host16(hdr->length);
687 wpa_printf(MSG_DEBUG, " IEEE 802.1X: version=%d type=%d length=%d",
688 hdr->version, hdr->type, datalen);
689
690 if (len - sizeof(*hdr) < datalen) {
691 printf(" frame too short for this IEEE 802.1X packet\n");
692 if (sta->eapol_sm)
693 sta->eapol_sm->dot1xAuthEapLengthErrorFramesRx++;
694 return;
695 }
696 if (len - sizeof(*hdr) > datalen) {
697 wpa_printf(MSG_DEBUG, " ignoring %lu extra octets after "
698 "IEEE 802.1X packet",
699 (unsigned long) len - sizeof(*hdr) - datalen);
700 }
701
702 if (sta->eapol_sm) {
703 sta->eapol_sm->dot1xAuthLastEapolFrameVersion = hdr->version;
704 sta->eapol_sm->dot1xAuthEapolFramesRx++;
705 }
706
707 key = (struct ieee802_1x_eapol_key *) (hdr + 1);
708 if (datalen >= sizeof(struct ieee802_1x_eapol_key) &&
709 hdr->type == IEEE802_1X_TYPE_EAPOL_KEY &&
710 (key->type == EAPOL_KEY_TYPE_WPA ||
711 key->type == EAPOL_KEY_TYPE_RSN)) {
712 wpa_receive(hapd->wpa_auth, sta->wpa_sm, (u8 *) hdr,
713 sizeof(*hdr) + datalen);
714 return;
715 }
716
717 if ((!hapd->conf->ieee802_1x &&
718 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) ||
719 wpa_key_mgmt_wpa_psk(wpa_auth_sta_key_mgmt(sta->wpa_sm)))
720 return;
721
722 if (!sta->eapol_sm) {
723 sta->eapol_sm = eapol_auth_alloc(hapd->eapol_auth, sta->addr,
724 sta->flags & WLAN_STA_PREAUTH,
725 sta);
726 if (!sta->eapol_sm)
727 return;
728
729 #ifdef CONFIG_WPS
730 if (!hapd->conf->ieee802_1x &&
731 ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) ==
732 WLAN_STA_MAYBE_WPS)) {
733 /*
734 * Delay EAPOL frame transmission until a possible WPS
735 * STA initiates the handshake with EAPOL-Start.
736 */
737 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
738 }
739 #endif /* CONFIG_WPS */
740
741 sta->eapol_sm->eap_if->portEnabled = TRUE;
742 }
743
744 /* since we support version 1, we can ignore version field and proceed
745 * as specified in version 1 standard [IEEE Std 802.1X-2001, 7.5.5] */
746 /* TODO: actually, we are not version 1 anymore.. However, Version 2
747 * does not change frame contents, so should be ok to process frames
748 * more or less identically. Some changes might be needed for
749 * verification of fields. */
750
751 switch (hdr->type) {
752 case IEEE802_1X_TYPE_EAP_PACKET:
753 handle_eap(hapd, sta, (u8 *) (hdr + 1), datalen);
754 break;
755
756 case IEEE802_1X_TYPE_EAPOL_START:
757 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
758 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Start "
759 "from STA");
760 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
761 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
762 if (pmksa) {
763 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
764 HOSTAPD_LEVEL_DEBUG, "cached PMKSA "
765 "available - ignore it since "
766 "STA sent EAPOL-Start");
767 wpa_auth_sta_clear_pmksa(sta->wpa_sm, pmksa);
768 }
769 sta->eapol_sm->eapolStart = TRUE;
770 sta->eapol_sm->dot1xAuthEapolStartFramesRx++;
771 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
772 break;
773
774 case IEEE802_1X_TYPE_EAPOL_LOGOFF:
775 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
776 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Logoff "
777 "from STA");
778 sta->acct_terminate_cause =
779 RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
780 accounting_sta_stop(hapd, sta);
781 sta->eapol_sm->eapolLogoff = TRUE;
782 sta->eapol_sm->dot1xAuthEapolLogoffFramesRx++;
783 break;
784
785 case IEEE802_1X_TYPE_EAPOL_KEY:
786 wpa_printf(MSG_DEBUG, " EAPOL-Key");
787 if (!(sta->flags & WLAN_STA_AUTHORIZED)) {
788 wpa_printf(MSG_DEBUG, " Dropped key data from "
789 "unauthorized Supplicant");
790 break;
791 }
792 break;
793
794 case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT:
795 wpa_printf(MSG_DEBUG, " EAPOL-Encapsulated-ASF-Alert");
796 /* TODO: implement support for this; show data */
797 break;
798
799 default:
800 wpa_printf(MSG_DEBUG, " unknown IEEE 802.1X packet type");
801 sta->eapol_sm->dot1xAuthInvalidEapolFramesRx++;
802 break;
803 }
804
805 eapol_auth_step(sta->eapol_sm);
806 }
807
808
809 /**
810 * ieee802_1x_new_station - Start IEEE 802.1X authentication
811 * @hapd: hostapd BSS data
812 * @sta: The station
813 *
814 * This function is called to start IEEE 802.1X authentication when a new
815 * station completes IEEE 802.11 association.
816 */
817 void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta)
818 {
819 struct rsn_pmksa_cache_entry *pmksa;
820 int reassoc = 1;
821 int force_1x = 0;
822
823 #ifdef CONFIG_WPS
824 if (hapd->conf->wps_state && hapd->conf->wpa &&
825 (sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
826 /*
827 * Need to enable IEEE 802.1X/EAPOL state machines for possible
828 * WPS handshake even if IEEE 802.1X/EAPOL is not used for
829 * authentication in this BSS.
830 */
831 force_1x = 1;
832 }
833 #endif /* CONFIG_WPS */
834
835 if ((!force_1x && !hapd->conf->ieee802_1x) ||
836 wpa_key_mgmt_wpa_psk(wpa_auth_sta_key_mgmt(sta->wpa_sm)))
837 return;
838
839 if (sta->eapol_sm == NULL) {
840 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
841 HOSTAPD_LEVEL_DEBUG, "start authentication");
842 sta->eapol_sm = eapol_auth_alloc(hapd->eapol_auth, sta->addr,
843 sta->flags & WLAN_STA_PREAUTH,
844 sta);
845 if (sta->eapol_sm == NULL) {
846 hostapd_logger(hapd, sta->addr,
847 HOSTAPD_MODULE_IEEE8021X,
848 HOSTAPD_LEVEL_INFO,
849 "failed to allocate state machine");
850 return;
851 }
852 reassoc = 0;
853 }
854
855 #ifdef CONFIG_WPS
856 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
857 if (!hapd->conf->ieee802_1x && !(sta->flags & WLAN_STA_WPS)) {
858 /*
859 * Delay EAPOL frame transmission until a possible WPS
860 * initiates the handshake with EAPOL-Start.
861 */
862 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
863 }
864 #endif /* CONFIG_WPS */
865
866 sta->eapol_sm->eap_if->portEnabled = TRUE;
867
868 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
869 if (pmksa) {
870 int old_vlanid;
871
872 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
873 HOSTAPD_LEVEL_DEBUG,
874 "PMK from PMKSA cache - skip IEEE 802.1X/EAP");
875 /* Setup EAPOL state machines to already authenticated state
876 * because of existing PMKSA information in the cache. */
877 sta->eapol_sm->keyRun = TRUE;
878 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
879 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
880 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
881 sta->eapol_sm->authSuccess = TRUE;
882 if (sta->eapol_sm->eap)
883 eap_sm_notify_cached(sta->eapol_sm->eap);
884 old_vlanid = sta->vlan_id;
885 pmksa_cache_to_eapol_data(pmksa, sta->eapol_sm);
886 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
887 sta->vlan_id = 0;
888 ap_sta_bind_vlan(hapd, sta, old_vlanid);
889 } else {
890 if (reassoc) {
891 /*
892 * Force EAPOL state machines to start
893 * re-authentication without having to wait for the
894 * Supplicant to send EAPOL-Start.
895 */
896 sta->eapol_sm->reAuthenticate = TRUE;
897 }
898 eapol_auth_step(sta->eapol_sm);
899 }
900 }
901
902
903 void ieee802_1x_free_radius_class(struct radius_class_data *class)
904 {
905 size_t i;
906 if (class == NULL)
907 return;
908 for (i = 0; i < class->count; i++)
909 os_free(class->attr[i].data);
910 os_free(class->attr);
911 class->attr = NULL;
912 class->count = 0;
913 }
914
915
916 int ieee802_1x_copy_radius_class(struct radius_class_data *dst,
917 const struct radius_class_data *src)
918 {
919 size_t i;
920
921 if (src->attr == NULL)
922 return 0;
923
924 dst->attr = os_zalloc(src->count * sizeof(struct radius_attr_data));
925 if (dst->attr == NULL)
926 return -1;
927
928 dst->count = 0;
929
930 for (i = 0; i < src->count; i++) {
931 dst->attr[i].data = os_malloc(src->attr[i].len);
932 if (dst->attr[i].data == NULL)
933 break;
934 dst->count++;
935 os_memcpy(dst->attr[i].data, src->attr[i].data,
936 src->attr[i].len);
937 dst->attr[i].len = src->attr[i].len;
938 }
939
940 return 0;
941 }
942
943
944 void ieee802_1x_free_station(struct sta_info *sta)
945 {
946 struct eapol_state_machine *sm = sta->eapol_sm;
947
948 if (sm == NULL)
949 return;
950
951 sta->eapol_sm = NULL;
952
953 if (sm->last_recv_radius) {
954 radius_msg_free(sm->last_recv_radius);
955 os_free(sm->last_recv_radius);
956 }
957
958 os_free(sm->identity);
959 ieee802_1x_free_radius_class(&sm->radius_class);
960 eapol_auth_free(sm);
961 }
962
963
964 static void ieee802_1x_decapsulate_radius(struct hostapd_data *hapd,
965 struct sta_info *sta)
966 {
967 u8 *eap;
968 size_t len;
969 struct eap_hdr *hdr;
970 int eap_type = -1;
971 char buf[64];
972 struct radius_msg *msg;
973 struct eapol_state_machine *sm = sta->eapol_sm;
974
975 if (sm == NULL || sm->last_recv_radius == NULL) {
976 if (sm)
977 sm->eap_if->aaaEapNoReq = TRUE;
978 return;
979 }
980
981 msg = sm->last_recv_radius;
982
983 eap = radius_msg_get_eap(msg, &len);
984 if (eap == NULL) {
985 /* RFC 3579, Chap. 2.6.3:
986 * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
987 * attribute */
988 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
989 HOSTAPD_LEVEL_WARNING, "could not extract "
990 "EAP-Message from RADIUS message");
991 sm->eap_if->aaaEapNoReq = TRUE;
992 return;
993 }
994
995 if (len < sizeof(*hdr)) {
996 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
997 HOSTAPD_LEVEL_WARNING, "too short EAP packet "
998 "received from authentication server");
999 os_free(eap);
1000 sm->eap_if->aaaEapNoReq = TRUE;
1001 return;
1002 }
1003
1004 if (len > sizeof(*hdr))
1005 eap_type = eap[sizeof(*hdr)];
1006
1007 hdr = (struct eap_hdr *) eap;
1008 switch (hdr->code) {
1009 case EAP_CODE_REQUEST:
1010 if (eap_type >= 0)
1011 sm->eap_type_authsrv = eap_type;
1012 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
1013 eap_type >= 0 ? eap_type_text(eap_type) : "??",
1014 eap_type);
1015 break;
1016 case EAP_CODE_RESPONSE:
1017 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
1018 eap_type >= 0 ? eap_type_text(eap_type) : "??",
1019 eap_type);
1020 break;
1021 case EAP_CODE_SUCCESS:
1022 os_strlcpy(buf, "EAP Success", sizeof(buf));
1023 break;
1024 case EAP_CODE_FAILURE:
1025 os_strlcpy(buf, "EAP Failure", sizeof(buf));
1026 break;
1027 default:
1028 os_strlcpy(buf, "unknown EAP code", sizeof(buf));
1029 break;
1030 }
1031 buf[sizeof(buf) - 1] = '\0';
1032 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1033 HOSTAPD_LEVEL_DEBUG, "decapsulated EAP packet (code=%d "
1034 "id=%d len=%d) from RADIUS server: %s",
1035 hdr->code, hdr->identifier, be_to_host16(hdr->length),
1036 buf);
1037 sm->eap_if->aaaEapReq = TRUE;
1038
1039 wpabuf_free(sm->eap_if->aaaEapReqData);
1040 sm->eap_if->aaaEapReqData = wpabuf_alloc_ext_data(eap, len);
1041 }
1042
1043
1044 static void ieee802_1x_get_keys(struct hostapd_data *hapd,
1045 struct sta_info *sta, struct radius_msg *msg,
1046 struct radius_msg *req,
1047 const u8 *shared_secret,
1048 size_t shared_secret_len)
1049 {
1050 struct radius_ms_mppe_keys *keys;
1051 struct eapol_state_machine *sm = sta->eapol_sm;
1052 if (sm == NULL)
1053 return;
1054
1055 keys = radius_msg_get_ms_keys(msg, req, shared_secret,
1056 shared_secret_len);
1057
1058 if (keys && keys->send && keys->recv) {
1059 size_t len = keys->send_len + keys->recv_len;
1060 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Send-Key",
1061 keys->send, keys->send_len);
1062 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Recv-Key",
1063 keys->recv, keys->recv_len);
1064
1065 os_free(sm->eap_if->aaaEapKeyData);
1066 sm->eap_if->aaaEapKeyData = os_malloc(len);
1067 if (sm->eap_if->aaaEapKeyData) {
1068 os_memcpy(sm->eap_if->aaaEapKeyData, keys->recv,
1069 keys->recv_len);
1070 os_memcpy(sm->eap_if->aaaEapKeyData + keys->recv_len,
1071 keys->send, keys->send_len);
1072 sm->eap_if->aaaEapKeyDataLen = len;
1073 sm->eap_if->aaaEapKeyAvailable = TRUE;
1074 }
1075 }
1076
1077 if (keys) {
1078 os_free(keys->send);
1079 os_free(keys->recv);
1080 os_free(keys);
1081 }
1082 }
1083
1084
1085 static void ieee802_1x_store_radius_class(struct hostapd_data *hapd,
1086 struct sta_info *sta,
1087 struct radius_msg *msg)
1088 {
1089 u8 *class;
1090 size_t class_len;
1091 struct eapol_state_machine *sm = sta->eapol_sm;
1092 int count, i;
1093 struct radius_attr_data *nclass;
1094 size_t nclass_count;
1095
1096 if (!hapd->conf->radius->acct_server || hapd->radius == NULL ||
1097 sm == NULL)
1098 return;
1099
1100 ieee802_1x_free_radius_class(&sm->radius_class);
1101 count = radius_msg_count_attr(msg, RADIUS_ATTR_CLASS, 1);
1102 if (count <= 0)
1103 return;
1104
1105 nclass = os_zalloc(count * sizeof(struct radius_attr_data));
1106 if (nclass == NULL)
1107 return;
1108
1109 nclass_count = 0;
1110
1111 class = NULL;
1112 for (i = 0; i < count; i++) {
1113 do {
1114 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CLASS,
1115 &class, &class_len,
1116 class) < 0) {
1117 i = count;
1118 break;
1119 }
1120 } while (class_len < 1);
1121
1122 nclass[nclass_count].data = os_malloc(class_len);
1123 if (nclass[nclass_count].data == NULL)
1124 break;
1125
1126 os_memcpy(nclass[nclass_count].data, class, class_len);
1127 nclass[nclass_count].len = class_len;
1128 nclass_count++;
1129 }
1130
1131 sm->radius_class.attr = nclass;
1132 sm->radius_class.count = nclass_count;
1133 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Stored %lu RADIUS Class "
1134 "attributes for " MACSTR,
1135 (unsigned long) sm->radius_class.count,
1136 MAC2STR(sta->addr));
1137 }
1138
1139
1140 /* Update sta->identity based on User-Name attribute in Access-Accept */
1141 static void ieee802_1x_update_sta_identity(struct hostapd_data *hapd,
1142 struct sta_info *sta,
1143 struct radius_msg *msg)
1144 {
1145 u8 *buf, *identity;
1146 size_t len;
1147 struct eapol_state_machine *sm = sta->eapol_sm;
1148
1149 if (sm == NULL)
1150 return;
1151
1152 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &buf, &len,
1153 NULL) < 0)
1154 return;
1155
1156 identity = os_malloc(len + 1);
1157 if (identity == NULL)
1158 return;
1159
1160 os_memcpy(identity, buf, len);
1161 identity[len] = '\0';
1162
1163 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1164 HOSTAPD_LEVEL_DEBUG, "old identity '%s' updated with "
1165 "User-Name from Access-Accept '%s'",
1166 sm->identity ? (char *) sm->identity : "N/A",
1167 (char *) identity);
1168
1169 os_free(sm->identity);
1170 sm->identity = identity;
1171 sm->identity_len = len;
1172 }
1173
1174
1175 struct sta_id_search {
1176 u8 identifier;
1177 struct eapol_state_machine *sm;
1178 };
1179
1180
1181 static int ieee802_1x_select_radius_identifier(struct hostapd_data *hapd,
1182 struct sta_info *sta,
1183 void *ctx)
1184 {
1185 struct sta_id_search *id_search = ctx;
1186 struct eapol_state_machine *sm = sta->eapol_sm;
1187
1188 if (sm && sm->radius_identifier >= 0 &&
1189 sm->radius_identifier == id_search->identifier) {
1190 id_search->sm = sm;
1191 return 1;
1192 }
1193 return 0;
1194 }
1195
1196
1197 static struct eapol_state_machine *
1198 ieee802_1x_search_radius_identifier(struct hostapd_data *hapd, u8 identifier)
1199 {
1200 struct sta_id_search id_search;
1201 id_search.identifier = identifier;
1202 id_search.sm = NULL;
1203 ap_for_each_sta(hapd, ieee802_1x_select_radius_identifier, &id_search);
1204 return id_search.sm;
1205 }
1206
1207
1208 /**
1209 * ieee802_1x_receive_auth - Process RADIUS frames from Authentication Server
1210 * @msg: RADIUS response message
1211 * @req: RADIUS request message
1212 * @shared_secret: RADIUS shared secret
1213 * @shared_secret_len: Length of shared_secret in octets
1214 * @data: Context data (struct hostapd_data *)
1215 * Returns: Processing status
1216 */
1217 static RadiusRxResult
1218 ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
1219 const u8 *shared_secret, size_t shared_secret_len,
1220 void *data)
1221 {
1222 struct hostapd_data *hapd = data;
1223 struct sta_info *sta;
1224 u32 session_timeout = 0, termination_action, acct_interim_interval;
1225 int session_timeout_set, old_vlanid = 0;
1226 struct eapol_state_machine *sm;
1227 int override_eapReq = 0;
1228
1229 sm = ieee802_1x_search_radius_identifier(hapd, msg->hdr->identifier);
1230 if (sm == NULL) {
1231 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Could not find matching "
1232 "station for this RADIUS message");
1233 return RADIUS_RX_UNKNOWN;
1234 }
1235 sta = sm->sta;
1236
1237 /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
1238 * present when packet contains an EAP-Message attribute */
1239 if (msg->hdr->code == RADIUS_CODE_ACCESS_REJECT &&
1240 radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
1241 0) < 0 &&
1242 radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
1243 wpa_printf(MSG_DEBUG, "Allowing RADIUS Access-Reject without "
1244 "Message-Authenticator since it does not include "
1245 "EAP-Message");
1246 } else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
1247 req, 1)) {
1248 printf("Incoming RADIUS packet did not have correct "
1249 "Message-Authenticator - dropped\n");
1250 return RADIUS_RX_INVALID_AUTHENTICATOR;
1251 }
1252
1253 if (msg->hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
1254 msg->hdr->code != RADIUS_CODE_ACCESS_REJECT &&
1255 msg->hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
1256 printf("Unknown RADIUS message code\n");
1257 return RADIUS_RX_UNKNOWN;
1258 }
1259
1260 sm->radius_identifier = -1;
1261 wpa_printf(MSG_DEBUG, "RADIUS packet matching with station " MACSTR,
1262 MAC2STR(sta->addr));
1263
1264 if (sm->last_recv_radius) {
1265 radius_msg_free(sm->last_recv_radius);
1266 os_free(sm->last_recv_radius);
1267 }
1268
1269 sm->last_recv_radius = msg;
1270
1271 session_timeout_set =
1272 !radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
1273 &session_timeout);
1274 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_TERMINATION_ACTION,
1275 &termination_action))
1276 termination_action = RADIUS_TERMINATION_ACTION_DEFAULT;
1277
1278 if (hapd->conf->radius->acct_interim_interval == 0 &&
1279 msg->hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
1280 radius_msg_get_attr_int32(msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
1281 &acct_interim_interval) == 0) {
1282 if (acct_interim_interval < 60) {
1283 hostapd_logger(hapd, sta->addr,
1284 HOSTAPD_MODULE_IEEE8021X,
1285 HOSTAPD_LEVEL_INFO,
1286 "ignored too small "
1287 "Acct-Interim-Interval %d",
1288 acct_interim_interval);
1289 } else
1290 sta->acct_interim_interval = acct_interim_interval;
1291 }
1292
1293
1294 switch (msg->hdr->code) {
1295 case RADIUS_CODE_ACCESS_ACCEPT:
1296 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
1297 sta->vlan_id = 0;
1298 else {
1299 old_vlanid = sta->vlan_id;
1300 sta->vlan_id = radius_msg_get_vlanid(msg);
1301 }
1302 if (sta->vlan_id > 0 &&
1303 hostapd_get_vlan_id_ifname(hapd->conf->vlan,
1304 sta->vlan_id)) {
1305 hostapd_logger(hapd, sta->addr,
1306 HOSTAPD_MODULE_RADIUS,
1307 HOSTAPD_LEVEL_INFO,
1308 "VLAN ID %d", sta->vlan_id);
1309 } else if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_REQUIRED) {
1310 sta->eapol_sm->authFail = TRUE;
1311 hostapd_logger(hapd, sta->addr,
1312 HOSTAPD_MODULE_IEEE8021X,
1313 HOSTAPD_LEVEL_INFO, "authentication "
1314 "server did not include required VLAN "
1315 "ID in Access-Accept");
1316 break;
1317 }
1318
1319 ap_sta_bind_vlan(hapd, sta, old_vlanid);
1320
1321 /* RFC 3580, Ch. 3.17 */
1322 if (session_timeout_set && termination_action ==
1323 RADIUS_TERMINATION_ACTION_RADIUS_REQUEST) {
1324 sm->reAuthPeriod = session_timeout;
1325 } else if (session_timeout_set)
1326 ap_sta_session_timeout(hapd, sta, session_timeout);
1327
1328 sm->eap_if->aaaSuccess = TRUE;
1329 override_eapReq = 1;
1330 ieee802_1x_get_keys(hapd, sta, msg, req, shared_secret,
1331 shared_secret_len);
1332 ieee802_1x_store_radius_class(hapd, sta, msg);
1333 ieee802_1x_update_sta_identity(hapd, sta, msg);
1334 if (sm->eap_if->eapKeyAvailable &&
1335 wpa_auth_pmksa_add(sta->wpa_sm, sm->eapol_key_crypt,
1336 session_timeout_set ?
1337 (int) session_timeout : -1, sm) == 0) {
1338 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
1339 HOSTAPD_LEVEL_DEBUG,
1340 "Added PMKSA cache entry");
1341 }
1342 break;
1343 case RADIUS_CODE_ACCESS_REJECT:
1344 sm->eap_if->aaaFail = TRUE;
1345 override_eapReq = 1;
1346 break;
1347 case RADIUS_CODE_ACCESS_CHALLENGE:
1348 sm->eap_if->aaaEapReq = TRUE;
1349 if (session_timeout_set) {
1350 /* RFC 2869, Ch. 2.3.2; RFC 3580, Ch. 3.17 */
1351 sm->eap_if->aaaMethodTimeout = session_timeout;
1352 hostapd_logger(hapd, sm->addr,
1353 HOSTAPD_MODULE_IEEE8021X,
1354 HOSTAPD_LEVEL_DEBUG,
1355 "using EAP timeout of %d seconds (from "
1356 "RADIUS)",
1357 sm->eap_if->aaaMethodTimeout);
1358 } else {
1359 /*
1360 * Use dynamic retransmission behavior per EAP
1361 * specification.
1362 */
1363 sm->eap_if->aaaMethodTimeout = 0;
1364 }
1365 break;
1366 }
1367
1368 ieee802_1x_decapsulate_radius(hapd, sta);
1369 if (override_eapReq)
1370 sm->eap_if->aaaEapReq = FALSE;
1371
1372 eapol_auth_step(sm);
1373
1374 return RADIUS_RX_QUEUED;
1375 }
1376
1377
1378 void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta)
1379 {
1380 struct eapol_state_machine *sm = sta->eapol_sm;
1381 if (sm == NULL)
1382 return;
1383
1384 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1385 HOSTAPD_LEVEL_DEBUG, "aborting authentication");
1386
1387 if (sm->last_recv_radius) {
1388 radius_msg_free(sm->last_recv_radius);
1389 os_free(sm->last_recv_radius);
1390 sm->last_recv_radius = NULL;
1391 }
1392
1393 if (sm->eap_if->eapTimeout) {
1394 /*
1395 * Disconnect the STA since it did not reply to the last EAP
1396 * request and we cannot continue EAP processing (EAP-Failure
1397 * could only be sent if the EAP peer actually replied).
1398 */
1399 sm->eap_if->portEnabled = FALSE;
1400 hostapd_sta_deauth(hapd, sta->addr,
1401 WLAN_REASON_PREV_AUTH_NOT_VALID);
1402 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
1403 WLAN_STA_AUTHORIZED);
1404 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1405 eloop_register_timeout(0, 0, ap_handle_timer, hapd, sta);
1406 sta->timeout_next = STA_REMOVE;
1407 }
1408 }
1409
1410
1411 #ifdef HOSTAPD_DUMP_STATE
1412 static void fprint_char(FILE *f, char c)
1413 {
1414 if (c >= 32 && c < 127)
1415 fprintf(f, "%c", c);
1416 else
1417 fprintf(f, "<%02x>", c);
1418 }
1419
1420
1421 void ieee802_1x_dump_state(FILE *f, const char *prefix, struct sta_info *sta)
1422 {
1423 struct eapol_state_machine *sm = sta->eapol_sm;
1424 if (sm == NULL)
1425 return;
1426
1427 fprintf(f, "%sIEEE 802.1X:\n", prefix);
1428
1429 if (sm->identity) {
1430 size_t i;
1431 fprintf(f, "%sidentity=", prefix);
1432 for (i = 0; i < sm->identity_len; i++)
1433 fprint_char(f, sm->identity[i]);
1434 fprintf(f, "\n");
1435 }
1436
1437 fprintf(f, "%slast EAP type: Authentication Server: %d (%s) "
1438 "Supplicant: %d (%s)\n", prefix,
1439 sm->eap_type_authsrv, eap_type_text(sm->eap_type_authsrv),
1440 sm->eap_type_supp, eap_type_text(sm->eap_type_supp));
1441
1442 fprintf(f, "%scached_packets=%s\n", prefix,
1443 sm->last_recv_radius ? "[RX RADIUS]" : "");
1444
1445 eapol_auth_dump_state(f, prefix, sm);
1446 }
1447 #endif /* HOSTAPD_DUMP_STATE */
1448
1449
1450 static int ieee802_1x_rekey_broadcast(struct hostapd_data *hapd)
1451 {
1452 if (hapd->conf->default_wep_key_len < 1)
1453 return 0;
1454
1455 os_free(hapd->default_wep_key);
1456 hapd->default_wep_key = os_malloc(hapd->conf->default_wep_key_len);
1457 if (hapd->default_wep_key == NULL ||
1458 os_get_random(hapd->default_wep_key,
1459 hapd->conf->default_wep_key_len)) {
1460 printf("Could not generate random WEP key.\n");
1461 os_free(hapd->default_wep_key);
1462 hapd->default_wep_key = NULL;
1463 return -1;
1464 }
1465
1466 wpa_hexdump_key(MSG_DEBUG, "IEEE 802.1X: New default WEP key",
1467 hapd->default_wep_key,
1468 hapd->conf->default_wep_key_len);
1469
1470 return 0;
1471 }
1472
1473
1474 static int ieee802_1x_sta_key_available(struct hostapd_data *hapd,
1475 struct sta_info *sta, void *ctx)
1476 {
1477 if (sta->eapol_sm) {
1478 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1479 eapol_auth_step(sta->eapol_sm);
1480 }
1481 return 0;
1482 }
1483
1484
1485 static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx)
1486 {
1487 struct hostapd_data *hapd = eloop_ctx;
1488
1489 if (hapd->default_wep_key_idx >= 3)
1490 hapd->default_wep_key_idx =
1491 hapd->conf->individual_wep_key_len > 0 ? 1 : 0;
1492 else
1493 hapd->default_wep_key_idx++;
1494
1495 wpa_printf(MSG_DEBUG, "IEEE 802.1X: New default WEP key index %d",
1496 hapd->default_wep_key_idx);
1497
1498 if (ieee802_1x_rekey_broadcast(hapd)) {
1499 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
1500 HOSTAPD_LEVEL_WARNING, "failed to generate a "
1501 "new broadcast key");
1502 os_free(hapd->default_wep_key);
1503 hapd->default_wep_key = NULL;
1504 return;
1505 }
1506
1507 /* TODO: Could setup key for RX here, but change default TX keyid only
1508 * after new broadcast key has been sent to all stations. */
1509 if (hostapd_set_encryption(hapd->conf->iface, hapd, "WEP", NULL,
1510 hapd->default_wep_key_idx,
1511 hapd->default_wep_key,
1512 hapd->conf->default_wep_key_len, 1)) {
1513 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
1514 HOSTAPD_LEVEL_WARNING, "failed to configure a "
1515 "new broadcast key");
1516 os_free(hapd->default_wep_key);
1517 hapd->default_wep_key = NULL;
1518 return;
1519 }
1520
1521 ap_for_each_sta(hapd, ieee802_1x_sta_key_available, NULL);
1522
1523 if (hapd->conf->wep_rekeying_period > 0) {
1524 eloop_register_timeout(hapd->conf->wep_rekeying_period, 0,
1525 ieee802_1x_rekey, hapd, NULL);
1526 }
1527 }
1528
1529
1530 static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type,
1531 const u8 *data, size_t datalen)
1532 {
1533 ieee802_1x_send(ctx, sta_ctx, type, data, datalen);
1534 }
1535
1536
1537 static void ieee802_1x_aaa_send(void *ctx, void *sta_ctx,
1538 const u8 *data, size_t datalen)
1539 {
1540 struct hostapd_data *hapd = ctx;
1541 struct sta_info *sta = sta_ctx;
1542
1543 ieee802_1x_encapsulate_radius(hapd, sta, data, datalen);
1544 }
1545
1546
1547 static void _ieee802_1x_finished(void *ctx, void *sta_ctx, int success,
1548 int preauth)
1549 {
1550 struct hostapd_data *hapd = ctx;
1551 struct sta_info *sta = sta_ctx;
1552 if (preauth)
1553 rsn_preauth_finished(hapd, sta, success);
1554 else
1555 ieee802_1x_finished(hapd, sta, success);
1556 }
1557
1558
1559 static int ieee802_1x_get_eap_user(void *ctx, const u8 *identity,
1560 size_t identity_len, int phase2,
1561 struct eap_user *user)
1562 {
1563 struct hostapd_data *hapd = ctx;
1564 const struct hostapd_eap_user *eap_user;
1565 int i, count;
1566
1567 eap_user = hostapd_get_eap_user(hapd->conf, identity,
1568 identity_len, phase2);
1569 if (eap_user == NULL)
1570 return -1;
1571
1572 os_memset(user, 0, sizeof(*user));
1573 user->phase2 = phase2;
1574 count = EAP_USER_MAX_METHODS;
1575 if (count > EAP_MAX_METHODS)
1576 count = EAP_MAX_METHODS;
1577 for (i = 0; i < count; i++) {
1578 user->methods[i].vendor = eap_user->methods[i].vendor;
1579 user->methods[i].method = eap_user->methods[i].method;
1580 }
1581
1582 if (eap_user->password) {
1583 user->password = os_malloc(eap_user->password_len);
1584 if (user->password == NULL)
1585 return -1;
1586 os_memcpy(user->password, eap_user->password,
1587 eap_user->password_len);
1588 user->password_len = eap_user->password_len;
1589 }
1590 user->force_version = eap_user->force_version;
1591 user->ttls_auth = eap_user->ttls_auth;
1592
1593 return 0;
1594 }
1595
1596
1597 static int ieee802_1x_sta_entry_alive(void *ctx, const u8 *addr)
1598 {
1599 struct hostapd_data *hapd = ctx;
1600 struct sta_info *sta;
1601 sta = ap_get_sta(hapd, addr);
1602 if (sta == NULL || sta->eapol_sm == NULL)
1603 return 0;
1604 return 1;
1605 }
1606
1607
1608 static void ieee802_1x_logger(void *ctx, const u8 *addr,
1609 eapol_logger_level level, const char *txt)
1610 {
1611 struct hostapd_data *hapd = ctx;
1612 int hlevel;
1613
1614 switch (level) {
1615 case EAPOL_LOGGER_WARNING:
1616 hlevel = HOSTAPD_LEVEL_WARNING;
1617 break;
1618 case EAPOL_LOGGER_INFO:
1619 hlevel = HOSTAPD_LEVEL_INFO;
1620 break;
1621 case EAPOL_LOGGER_DEBUG:
1622 default:
1623 hlevel = HOSTAPD_LEVEL_DEBUG;
1624 break;
1625 }
1626
1627 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE8021X, hlevel, "%s",
1628 txt);
1629 }
1630
1631
1632 static void ieee802_1x_set_port_authorized(void *ctx, void *sta_ctx,
1633 int authorized)
1634 {
1635 struct hostapd_data *hapd = ctx;
1636 struct sta_info *sta = sta_ctx;
1637 ieee802_1x_set_sta_authorized(hapd, sta, authorized);
1638 }
1639
1640
1641 static void _ieee802_1x_abort_auth(void *ctx, void *sta_ctx)
1642 {
1643 struct hostapd_data *hapd = ctx;
1644 struct sta_info *sta = sta_ctx;
1645 ieee802_1x_abort_auth(hapd, sta);
1646 }
1647
1648
1649 static void _ieee802_1x_tx_key(void *ctx, void *sta_ctx)
1650 {
1651 struct hostapd_data *hapd = ctx;
1652 struct sta_info *sta = sta_ctx;
1653 ieee802_1x_tx_key(hapd, sta);
1654 }
1655
1656
1657 int ieee802_1x_init(struct hostapd_data *hapd)
1658 {
1659 int i;
1660 struct eapol_auth_config conf;
1661 struct eapol_auth_cb cb;
1662
1663 os_memset(&conf, 0, sizeof(conf));
1664 conf.hapd = hapd;
1665 conf.eap_reauth_period = hapd->conf->eap_reauth_period;
1666 conf.wpa = hapd->conf->wpa;
1667 conf.individual_wep_key_len = hapd->conf->individual_wep_key_len;
1668 conf.eap_server = hapd->conf->eap_server;
1669 conf.ssl_ctx = hapd->ssl_ctx;
1670 conf.eap_sim_db_priv = hapd->eap_sim_db_priv;
1671 conf.eap_req_id_text = hapd->conf->eap_req_id_text;
1672 conf.eap_req_id_text_len = hapd->conf->eap_req_id_text_len;
1673 conf.pac_opaque_encr_key = hapd->conf->pac_opaque_encr_key;
1674 conf.eap_fast_a_id = hapd->conf->eap_fast_a_id;
1675 conf.eap_fast_a_id_len = hapd->conf->eap_fast_a_id_len;
1676 conf.eap_fast_a_id_info = hapd->conf->eap_fast_a_id_info;
1677 conf.eap_fast_prov = hapd->conf->eap_fast_prov;
1678 conf.pac_key_lifetime = hapd->conf->pac_key_lifetime;
1679 conf.pac_key_refresh_time = hapd->conf->pac_key_refresh_time;
1680 conf.eap_sim_aka_result_ind = hapd->conf->eap_sim_aka_result_ind;
1681 conf.tnc = hapd->conf->tnc;
1682 conf.wps = hapd->wps;
1683
1684 os_memset(&cb, 0, sizeof(cb));
1685 cb.eapol_send = ieee802_1x_eapol_send;
1686 cb.aaa_send = ieee802_1x_aaa_send;
1687 cb.finished = _ieee802_1x_finished;
1688 cb.get_eap_user = ieee802_1x_get_eap_user;
1689 cb.sta_entry_alive = ieee802_1x_sta_entry_alive;
1690 cb.logger = ieee802_1x_logger;
1691 cb.set_port_authorized = ieee802_1x_set_port_authorized;
1692 cb.abort_auth = _ieee802_1x_abort_auth;
1693 cb.tx_key = _ieee802_1x_tx_key;
1694
1695 hapd->eapol_auth = eapol_auth_init(&conf, &cb);
1696 if (hapd->eapol_auth == NULL)
1697 return -1;
1698
1699 if ((hapd->conf->ieee802_1x || hapd->conf->wpa) &&
1700 hostapd_set_ieee8021x(hapd->conf->iface, hapd, 1))
1701 return -1;
1702
1703 if (radius_client_register(hapd->radius, RADIUS_AUTH,
1704 ieee802_1x_receive_auth, hapd))
1705 return -1;
1706
1707 if (hapd->conf->default_wep_key_len) {
1708 hostapd_set_privacy(hapd, 1);
1709
1710 for (i = 0; i < 4; i++)
1711 hostapd_set_encryption(hapd->conf->iface, hapd,
1712 "none", NULL, i, NULL, 0, 0);
1713
1714 ieee802_1x_rekey(hapd, NULL);
1715
1716 if (hapd->default_wep_key == NULL)
1717 return -1;
1718 }
1719
1720 return 0;
1721 }
1722
1723
1724 void ieee802_1x_deinit(struct hostapd_data *hapd)
1725 {
1726 eloop_cancel_timeout(ieee802_1x_rekey, hapd, NULL);
1727
1728 if (hapd->driver != NULL &&
1729 (hapd->conf->ieee802_1x || hapd->conf->wpa))
1730 hostapd_set_ieee8021x(hapd->conf->iface, hapd, 0);
1731
1732 eapol_auth_deinit(hapd->eapol_auth);
1733 hapd->eapol_auth = NULL;
1734 }
1735
1736
1737 int ieee802_1x_reconfig(struct hostapd_data *hapd,
1738 struct hostapd_config *oldconf,
1739 struct hostapd_bss_config *oldbss)
1740 {
1741 ieee802_1x_deinit(hapd);
1742 return ieee802_1x_init(hapd);
1743 }
1744
1745
1746 int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
1747 u8 *buf, size_t len, int ack)
1748 {
1749 struct ieee80211_hdr *hdr;
1750 struct ieee802_1x_hdr *xhdr;
1751 struct ieee802_1x_eapol_key *key;
1752 u8 *pos;
1753 const unsigned char rfc1042_hdr[ETH_ALEN] =
1754 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
1755
1756 if (sta == NULL)
1757 return -1;
1758 if (len < sizeof(*hdr) + sizeof(rfc1042_hdr) + 2 + sizeof(*xhdr))
1759 return 0;
1760
1761 hdr = (struct ieee80211_hdr *) buf;
1762 pos = (u8 *) (hdr + 1);
1763 if (os_memcmp(pos, rfc1042_hdr, sizeof(rfc1042_hdr)) != 0)
1764 return 0;
1765 pos += sizeof(rfc1042_hdr);
1766 if (WPA_GET_BE16(pos) != ETH_P_PAE)
1767 return 0;
1768 pos += 2;
1769
1770 xhdr = (struct ieee802_1x_hdr *) pos;
1771 pos += sizeof(*xhdr);
1772
1773 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR " TX status - version=%d "
1774 "type=%d length=%d - ack=%d",
1775 MAC2STR(sta->addr), xhdr->version, xhdr->type,
1776 be_to_host16(xhdr->length), ack);
1777
1778 /* EAPOL EAP-Packet packets are eventually re-sent by either Supplicant
1779 * or Authenticator state machines, but EAPOL-Key packets are not
1780 * retransmitted in case of failure. Try to re-sent failed EAPOL-Key
1781 * packets couple of times because otherwise STA keys become
1782 * unsynchronized with AP. */
1783 if (xhdr->type == IEEE802_1X_TYPE_EAPOL_KEY && !ack &&
1784 pos + sizeof(*key) <= buf + len) {
1785 key = (struct ieee802_1x_eapol_key *) pos;
1786 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1787 HOSTAPD_LEVEL_DEBUG, "did not Ack EAPOL-Key "
1788 "frame (%scast index=%d)",
1789 key->key_index & BIT(7) ? "uni" : "broad",
1790 key->key_index & ~BIT(7));
1791 /* TODO: re-send EAPOL-Key couple of times (with short delay
1792 * between them?). If all attempt fail, report error and
1793 * deauthenticate STA so that it will get new keys when
1794 * authenticating again (e.g., after returning in range).
1795 * Separate limit/transmit state needed both for unicast and
1796 * broadcast keys(?) */
1797 }
1798 /* TODO: could move unicast key configuration from ieee802_1x_tx_key()
1799 * to here and change the key only if the EAPOL-Key packet was Acked.
1800 */
1801
1802 return 1;
1803 }
1804
1805
1806 u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len)
1807 {
1808 if (sm == NULL || sm->identity == NULL)
1809 return NULL;
1810
1811 *len = sm->identity_len;
1812 return sm->identity;
1813 }
1814
1815
1816 u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len,
1817 int idx)
1818 {
1819 if (sm == NULL || sm->radius_class.attr == NULL ||
1820 idx >= (int) sm->radius_class.count)
1821 return NULL;
1822
1823 *len = sm->radius_class.attr[idx].len;
1824 return sm->radius_class.attr[idx].data;
1825 }
1826
1827
1828 const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len)
1829 {
1830 if (sm == NULL)
1831 return NULL;
1832
1833 *len = sm->eap_if->eapKeyDataLen;
1834 return sm->eap_if->eapKeyData;
1835 }
1836
1837
1838 void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm,
1839 int enabled)
1840 {
1841 if (sm == NULL)
1842 return;
1843 sm->eap_if->portEnabled = enabled ? TRUE : FALSE;
1844 eapol_auth_step(sm);
1845 }
1846
1847
1848 void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm,
1849 int valid)
1850 {
1851 if (sm == NULL)
1852 return;
1853 sm->portValid = valid ? TRUE : FALSE;
1854 eapol_auth_step(sm);
1855 }
1856
1857
1858 void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, int pre_auth)
1859 {
1860 if (sm == NULL)
1861 return;
1862 if (pre_auth)
1863 sm->flags |= EAPOL_SM_PREAUTH;
1864 else
1865 sm->flags &= ~EAPOL_SM_PREAUTH;
1866 }
1867
1868
1869 static const char * bool_txt(Boolean bool)
1870 {
1871 return bool ? "TRUE" : "FALSE";
1872 }
1873
1874
1875 int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
1876 {
1877 /* TODO */
1878 return 0;
1879 }
1880
1881
1882 int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
1883 char *buf, size_t buflen)
1884 {
1885 int len = 0, ret;
1886 struct eapol_state_machine *sm = sta->eapol_sm;
1887
1888 if (sm == NULL)
1889 return 0;
1890
1891 ret = os_snprintf(buf + len, buflen - len,
1892 "dot1xPaePortNumber=%d\n"
1893 "dot1xPaePortProtocolVersion=%d\n"
1894 "dot1xPaePortCapabilities=1\n"
1895 "dot1xPaePortInitialize=%d\n"
1896 "dot1xPaePortReauthenticate=FALSE\n",
1897 sta->aid,
1898 EAPOL_VERSION,
1899 sm->initialize);
1900 if (ret < 0 || (size_t) ret >= buflen - len)
1901 return len;
1902 len += ret;
1903
1904 /* dot1xAuthConfigTable */
1905 ret = os_snprintf(buf + len, buflen - len,
1906 "dot1xAuthPaeState=%d\n"
1907 "dot1xAuthBackendAuthState=%d\n"
1908 "dot1xAuthAdminControlledDirections=%d\n"
1909 "dot1xAuthOperControlledDirections=%d\n"
1910 "dot1xAuthAuthControlledPortStatus=%d\n"
1911 "dot1xAuthAuthControlledPortControl=%d\n"
1912 "dot1xAuthQuietPeriod=%u\n"
1913 "dot1xAuthServerTimeout=%u\n"
1914 "dot1xAuthReAuthPeriod=%u\n"
1915 "dot1xAuthReAuthEnabled=%s\n"
1916 "dot1xAuthKeyTxEnabled=%s\n",
1917 sm->auth_pae_state + 1,
1918 sm->be_auth_state + 1,
1919 sm->adminControlledDirections,
1920 sm->operControlledDirections,
1921 sm->authPortStatus,
1922 sm->portControl,
1923 sm->quietPeriod,
1924 sm->serverTimeout,
1925 sm->reAuthPeriod,
1926 bool_txt(sm->reAuthEnabled),
1927 bool_txt(sm->keyTxEnabled));
1928 if (ret < 0 || (size_t) ret >= buflen - len)
1929 return len;
1930 len += ret;
1931
1932 /* dot1xAuthStatsTable */
1933 ret = os_snprintf(buf + len, buflen - len,
1934 "dot1xAuthEapolFramesRx=%u\n"
1935 "dot1xAuthEapolFramesTx=%u\n"
1936 "dot1xAuthEapolStartFramesRx=%u\n"
1937 "dot1xAuthEapolLogoffFramesRx=%u\n"
1938 "dot1xAuthEapolRespIdFramesRx=%u\n"
1939 "dot1xAuthEapolRespFramesRx=%u\n"
1940 "dot1xAuthEapolReqIdFramesTx=%u\n"
1941 "dot1xAuthEapolReqFramesTx=%u\n"
1942 "dot1xAuthInvalidEapolFramesRx=%u\n"
1943 "dot1xAuthEapLengthErrorFramesRx=%u\n"
1944 "dot1xAuthLastEapolFrameVersion=%u\n"
1945 "dot1xAuthLastEapolFrameSource=" MACSTR "\n",
1946 sm->dot1xAuthEapolFramesRx,
1947 sm->dot1xAuthEapolFramesTx,
1948 sm->dot1xAuthEapolStartFramesRx,
1949 sm->dot1xAuthEapolLogoffFramesRx,
1950 sm->dot1xAuthEapolRespIdFramesRx,
1951 sm->dot1xAuthEapolRespFramesRx,
1952 sm->dot1xAuthEapolReqIdFramesTx,
1953 sm->dot1xAuthEapolReqFramesTx,
1954 sm->dot1xAuthInvalidEapolFramesRx,
1955 sm->dot1xAuthEapLengthErrorFramesRx,
1956 sm->dot1xAuthLastEapolFrameVersion,
1957 MAC2STR(sm->addr));
1958 if (ret < 0 || (size_t) ret >= buflen - len)
1959 return len;
1960 len += ret;
1961
1962 /* dot1xAuthDiagTable */
1963 ret = os_snprintf(buf + len, buflen - len,
1964 "dot1xAuthEntersConnecting=%u\n"
1965 "dot1xAuthEapLogoffsWhileConnecting=%u\n"
1966 "dot1xAuthEntersAuthenticating=%u\n"
1967 "dot1xAuthAuthSuccessesWhileAuthenticating=%u\n"
1968 "dot1xAuthAuthTimeoutsWhileAuthenticating=%u\n"
1969 "dot1xAuthAuthFailWhileAuthenticating=%u\n"
1970 "dot1xAuthAuthEapStartsWhileAuthenticating=%u\n"
1971 "dot1xAuthAuthEapLogoffWhileAuthenticating=%u\n"
1972 "dot1xAuthAuthReauthsWhileAuthenticated=%u\n"
1973 "dot1xAuthAuthEapStartsWhileAuthenticated=%u\n"
1974 "dot1xAuthAuthEapLogoffWhileAuthenticated=%u\n"
1975 "dot1xAuthBackendResponses=%u\n"
1976 "dot1xAuthBackendAccessChallenges=%u\n"
1977 "dot1xAuthBackendOtherRequestsToSupplicant=%u\n"
1978 "dot1xAuthBackendAuthSuccesses=%u\n"
1979 "dot1xAuthBackendAuthFails=%u\n",
1980 sm->authEntersConnecting,
1981 sm->authEapLogoffsWhileConnecting,
1982 sm->authEntersAuthenticating,
1983 sm->authAuthSuccessesWhileAuthenticating,
1984 sm->authAuthTimeoutsWhileAuthenticating,
1985 sm->authAuthFailWhileAuthenticating,
1986 sm->authAuthEapStartsWhileAuthenticating,
1987 sm->authAuthEapLogoffWhileAuthenticating,
1988 sm->authAuthReauthsWhileAuthenticated,
1989 sm->authAuthEapStartsWhileAuthenticated,
1990 sm->authAuthEapLogoffWhileAuthenticated,
1991 sm->backendResponses,
1992 sm->backendAccessChallenges,
1993 sm->backendOtherRequestsToSupplicant,
1994 sm->backendAuthSuccesses,
1995 sm->backendAuthFails);
1996 if (ret < 0 || (size_t) ret >= buflen - len)
1997 return len;
1998 len += ret;
1999
2000 /* dot1xAuthSessionStatsTable */
2001 ret = os_snprintf(buf + len, buflen - len,
2002 /* TODO: dot1xAuthSessionOctetsRx */
2003 /* TODO: dot1xAuthSessionOctetsTx */
2004 /* TODO: dot1xAuthSessionFramesRx */
2005 /* TODO: dot1xAuthSessionFramesTx */
2006 "dot1xAuthSessionId=%08X-%08X\n"
2007 "dot1xAuthSessionAuthenticMethod=%d\n"
2008 "dot1xAuthSessionTime=%u\n"
2009 "dot1xAuthSessionTerminateCause=999\n"
2010 "dot1xAuthSessionUserName=%s\n",
2011 sta->acct_session_id_hi, sta->acct_session_id_lo,
2012 (wpa_key_mgmt_wpa_ieee8021x(
2013 wpa_auth_sta_key_mgmt(sta->wpa_sm))) ?
2014 1 : 2,
2015 (unsigned int) (time(NULL) -
2016 sta->acct_session_start),
2017 sm->identity);
2018 if (ret < 0 || (size_t) ret >= buflen - len)
2019 return len;
2020 len += ret;
2021
2022 return len;
2023 }
2024
2025
2026 static void ieee802_1x_finished(struct hostapd_data *hapd,
2027 struct sta_info *sta, int success)
2028 {
2029 const u8 *key;
2030 size_t len;
2031 /* TODO: get PMKLifetime from WPA parameters */
2032 static const int dot11RSNAConfigPMKLifetime = 43200;
2033
2034 key = ieee802_1x_get_key(sta->eapol_sm, &len);
2035 if (success && key && len >= PMK_LEN &&
2036 wpa_auth_pmksa_add(sta->wpa_sm, key, dot11RSNAConfigPMKLifetime,
2037 sta->eapol_sm) == 0) {
2038 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
2039 HOSTAPD_LEVEL_DEBUG,
2040 "Added PMKSA cache entry (IEEE 802.1X)");
2041 }
2042 }
DragonFly BSD