1 /*
2 * hostapd / IEEE 802.1X-2004 Authenticator
3 * Copyright (c) 2002-2012, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "utils/includes.h"
10
11 #include "utils/common.h"
12 #include "utils/eloop.h"
13 #include "crypto/md5.h"
14 #include "crypto/crypto.h"
15 #include "crypto/random.h"
16 #include "common/ieee802_11_defs.h"
17 #include "radius/radius.h"
18 #include "radius/radius_client.h"
19 #include "eap_server/eap.h"
20 #include "eap_common/eap_wsc_common.h"
21 #include "eapol_auth/eapol_auth_sm.h"
22 #include "eapol_auth/eapol_auth_sm_i.h"
23 #include "p2p/p2p.h"
24 #include "hostapd.h"
25 #include "accounting.h"
26 #include "sta_info.h"
27 #include "wpa_auth.h"
28 #include "preauth_auth.h"
29 #include "pmksa_cache_auth.h"
30 #include "ap_config.h"
31 #include "ap_drv_ops.h"
32 #include "ieee802_1x.h"
33
34
35 static void ieee802_1x_finished(struct hostapd_data *hapd,
36 struct sta_info *sta, int success);
37
38
ieee802_1x_send(struct hostapd_data * hapd,struct sta_info * sta,u8 type,const u8 * data,size_t datalen)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_drv_hapd_send_eapol(
70 hapd, sta->addr, buf, len,
71 encrypt, hostapd_sta_flags_to_drv(sta->flags));
72 }
73
74 os_free(buf);
75 }
76
77
ieee802_1x_set_sta_authorized(struct hostapd_data * hapd,struct sta_info * sta,int authorized)78 void ieee802_1x_set_sta_authorized(struct hostapd_data *hapd,
79 struct sta_info *sta, int authorized)
80 {
81 int res;
82
83 if (sta->flags & WLAN_STA_PREAUTH)
84 return;
85
86 if (authorized) {
87 ap_sta_set_authorized(hapd, sta, 1);
88 res = hostapd_set_authorized(hapd, sta, 1);
89 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
90 HOSTAPD_LEVEL_DEBUG, "authorizing port");
91 } else {
92 ap_sta_set_authorized(hapd, sta, 0);
93 res = hostapd_set_authorized(hapd, sta, 0);
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 os_get_time(&sta->connected_time);
105 accounting_sta_start(hapd, sta);
106 }
107 }
108
109
ieee802_1x_tx_key_one(struct hostapd_data * hapd,struct sta_info * sta,int idx,int broadcast,u8 * key_data,size_t key_len)110 static void ieee802_1x_tx_key_one(struct hostapd_data *hapd,
111 struct sta_info *sta,
112 int idx, int broadcast,
113 u8 *key_data, size_t key_len)
114 {
115 u8 *buf, *ekey;
116 struct ieee802_1x_hdr *hdr;
117 struct ieee802_1x_eapol_key *key;
118 size_t len, ekey_len;
119 struct eapol_state_machine *sm = sta->eapol_sm;
120
121 if (sm == NULL)
122 return;
123
124 len = sizeof(*key) + key_len;
125 buf = os_zalloc(sizeof(*hdr) + len);
126 if (buf == NULL)
127 return;
128
129 hdr = (struct ieee802_1x_hdr *) buf;
130 key = (struct ieee802_1x_eapol_key *) (hdr + 1);
131 key->type = EAPOL_KEY_TYPE_RC4;
132 WPA_PUT_BE16(key->key_length, key_len);
133 wpa_get_ntp_timestamp(key->replay_counter);
134
135 if (random_get_bytes(key->key_iv, sizeof(key->key_iv))) {
136 wpa_printf(MSG_ERROR, "Could not get random numbers");
137 os_free(buf);
138 return;
139 }
140
141 key->key_index = idx | (broadcast ? 0 : BIT(7));
142 if (hapd->conf->eapol_key_index_workaround) {
143 /* According to some information, WinXP Supplicant seems to
144 * interpret bit7 as an indication whether the key is to be
145 * activated, so make it possible to enable workaround that
146 * sets this bit for all keys. */
147 key->key_index |= BIT(7);
148 }
149
150 /* Key is encrypted using "Key-IV + MSK[0..31]" as the RC4-key and
151 * MSK[32..63] is used to sign the message. */
152 if (sm->eap_if->eapKeyData == NULL || sm->eap_if->eapKeyDataLen < 64) {
153 wpa_printf(MSG_ERROR, "No eapKeyData available for encrypting "
154 "and signing EAPOL-Key");
155 os_free(buf);
156 return;
157 }
158 os_memcpy((u8 *) (key + 1), key_data, key_len);
159 ekey_len = sizeof(key->key_iv) + 32;
160 ekey = os_malloc(ekey_len);
161 if (ekey == NULL) {
162 wpa_printf(MSG_ERROR, "Could not encrypt key");
163 os_free(buf);
164 return;
165 }
166 os_memcpy(ekey, key->key_iv, sizeof(key->key_iv));
167 os_memcpy(ekey + sizeof(key->key_iv), sm->eap_if->eapKeyData, 32);
168 rc4_skip(ekey, ekey_len, 0, (u8 *) (key + 1), key_len);
169 os_free(ekey);
170
171 /* This header is needed here for HMAC-MD5, but it will be regenerated
172 * in ieee802_1x_send() */
173 hdr->version = hapd->conf->eapol_version;
174 hdr->type = IEEE802_1X_TYPE_EAPOL_KEY;
175 hdr->length = host_to_be16(len);
176 hmac_md5(sm->eap_if->eapKeyData + 32, 32, buf, sizeof(*hdr) + len,
177 key->key_signature);
178
179 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key to " MACSTR
180 " (%s index=%d)", MAC2STR(sm->addr),
181 broadcast ? "broadcast" : "unicast", idx);
182 ieee802_1x_send(hapd, sta, IEEE802_1X_TYPE_EAPOL_KEY, (u8 *) key, len);
183 if (sta->eapol_sm)
184 sta->eapol_sm->dot1xAuthEapolFramesTx++;
185 os_free(buf);
186 }
187
188
189 #ifndef CONFIG_NO_VLAN
190 static struct hostapd_wep_keys *
ieee802_1x_group_alloc(struct hostapd_data * hapd,const char * ifname)191 ieee802_1x_group_alloc(struct hostapd_data *hapd, const char *ifname)
192 {
193 struct hostapd_wep_keys *key;
194
195 key = os_zalloc(sizeof(*key));
196 if (key == NULL)
197 return NULL;
198
199 key->default_len = hapd->conf->default_wep_key_len;
200
201 if (key->idx >= hapd->conf->broadcast_key_idx_max ||
202 key->idx < hapd->conf->broadcast_key_idx_min)
203 key->idx = hapd->conf->broadcast_key_idx_min;
204 else
205 key->idx++;
206
207 if (!key->key[key->idx])
208 key->key[key->idx] = os_malloc(key->default_len);
209 if (key->key[key->idx] == NULL ||
210 random_get_bytes(key->key[key->idx], key->default_len)) {
211 printf("Could not generate random WEP key (dynamic VLAN).\n");
212 os_free(key->key[key->idx]);
213 key->key[key->idx] = NULL;
214 os_free(key);
215 return NULL;
216 }
217 key->len[key->idx] = key->default_len;
218
219 wpa_printf(MSG_DEBUG, "%s: Default WEP idx %d for dynamic VLAN\n",
220 ifname, key->idx);
221 wpa_hexdump_key(MSG_DEBUG, "Default WEP key (dynamic VLAN)",
222 key->key[key->idx], key->len[key->idx]);
223
224 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_WEP,
225 broadcast_ether_addr, key->idx, 1,
226 NULL, 0, key->key[key->idx],
227 key->len[key->idx]))
228 printf("Could not set dynamic VLAN WEP encryption key.\n");
229
230 hostapd_set_drv_ieee8021x(hapd, ifname, 1);
231
232 return key;
233 }
234
235
236 static struct hostapd_wep_keys *
ieee802_1x_get_group(struct hostapd_data * hapd,struct hostapd_ssid * ssid,size_t vlan_id)237 ieee802_1x_get_group(struct hostapd_data *hapd, struct hostapd_ssid *ssid,
238 size_t vlan_id)
239 {
240 const char *ifname;
241
242 if (vlan_id == 0)
243 return &ssid->wep;
244
245 if (vlan_id <= ssid->max_dyn_vlan_keys && ssid->dyn_vlan_keys &&
246 ssid->dyn_vlan_keys[vlan_id])
247 return ssid->dyn_vlan_keys[vlan_id];
248
249 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Creating new group "
250 "state machine for VLAN ID %lu",
251 (unsigned long) vlan_id);
252
253 ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
254 if (ifname == NULL) {
255 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Unknown VLAN ID %lu - "
256 "cannot create group key state machine",
257 (unsigned long) vlan_id);
258 return NULL;
259 }
260
261 if (ssid->dyn_vlan_keys == NULL) {
262 int size = (vlan_id + 1) * sizeof(ssid->dyn_vlan_keys[0]);
263 ssid->dyn_vlan_keys = os_zalloc(size);
264 if (ssid->dyn_vlan_keys == NULL)
265 return NULL;
266 ssid->max_dyn_vlan_keys = vlan_id;
267 }
268
269 if (ssid->max_dyn_vlan_keys < vlan_id) {
270 struct hostapd_wep_keys **na;
271 int size = (vlan_id + 1) * sizeof(ssid->dyn_vlan_keys[0]);
272 na = os_realloc(ssid->dyn_vlan_keys, size);
273 if (na == NULL)
274 return NULL;
275 ssid->dyn_vlan_keys = na;
276 os_memset(&ssid->dyn_vlan_keys[ssid->max_dyn_vlan_keys + 1], 0,
277 (vlan_id - ssid->max_dyn_vlan_keys) *
278 sizeof(ssid->dyn_vlan_keys[0]));
279 ssid->max_dyn_vlan_keys = vlan_id;
280 }
281
282 ssid->dyn_vlan_keys[vlan_id] = ieee802_1x_group_alloc(hapd, ifname);
283
284 return ssid->dyn_vlan_keys[vlan_id];
285 }
286 #endif /* CONFIG_NO_VLAN */
287
288
ieee802_1x_tx_key(struct hostapd_data * hapd,struct sta_info * sta)289 void ieee802_1x_tx_key(struct hostapd_data *hapd, struct sta_info *sta)
290 {
291 struct eapol_authenticator *eapol = hapd->eapol_auth;
292 struct eapol_state_machine *sm = sta->eapol_sm;
293 #ifndef CONFIG_NO_VLAN
294 struct hostapd_wep_keys *key = NULL;
295 int vlan_id;
296 #endif /* CONFIG_NO_VLAN */
297
298 if (sm == NULL || !sm->eap_if->eapKeyData)
299 return;
300
301 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key(s) to " MACSTR,
302 MAC2STR(sta->addr));
303
304 #ifndef CONFIG_NO_VLAN
305 vlan_id = sta->vlan_id;
306 if (vlan_id < 0 || vlan_id > MAX_VLAN_ID)
307 vlan_id = 0;
308
309 if (vlan_id) {
310 key = ieee802_1x_get_group(hapd, sta->ssid, vlan_id);
311 if (key && key->key[key->idx])
312 ieee802_1x_tx_key_one(hapd, sta, key->idx, 1,
313 key->key[key->idx],
314 key->len[key->idx]);
315 } else
316 #endif /* CONFIG_NO_VLAN */
317 if (eapol->default_wep_key) {
318 ieee802_1x_tx_key_one(hapd, sta, eapol->default_wep_key_idx, 1,
319 eapol->default_wep_key,
320 hapd->conf->default_wep_key_len);
321 }
322
323 if (hapd->conf->individual_wep_key_len > 0) {
324 u8 *ikey;
325 ikey = os_malloc(hapd->conf->individual_wep_key_len);
326 if (ikey == NULL ||
327 random_get_bytes(ikey, hapd->conf->individual_wep_key_len))
328 {
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_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
344 sta->addr, 0, 1, NULL, 0, ikey,
345 hapd->conf->individual_wep_key_len)) {
346 wpa_printf(MSG_ERROR, "Could not set individual WEP "
347 "encryption.");
348 }
349
350 os_free(ikey);
351 }
352 }
353
354
radius_mode_txt(struct hostapd_data * hapd)355 const char *radius_mode_txt(struct hostapd_data *hapd)
356 {
357 switch (hapd->iface->conf->hw_mode) {
358 case HOSTAPD_MODE_IEEE80211AD:
359 return "802.11ad";
360 case HOSTAPD_MODE_IEEE80211A:
361 return "802.11a";
362 case HOSTAPD_MODE_IEEE80211G:
363 return "802.11g";
364 case HOSTAPD_MODE_IEEE80211B:
365 default:
366 return "802.11b";
367 }
368 }
369
370
radius_sta_rate(struct hostapd_data * hapd,struct sta_info * sta)371 int radius_sta_rate(struct hostapd_data *hapd, struct sta_info *sta)
372 {
373 int i;
374 u8 rate = 0;
375
376 for (i = 0; i < sta->supported_rates_len; i++)
377 if ((sta->supported_rates[i] & 0x7f) > rate)
378 rate = sta->supported_rates[i] & 0x7f;
379
380 return rate;
381 }
382
383
384 #ifndef CONFIG_NO_RADIUS
ieee802_1x_learn_identity(struct hostapd_data * hapd,struct eapol_state_machine * sm,const u8 * eap,size_t len)385 static void ieee802_1x_learn_identity(struct hostapd_data *hapd,
386 struct eapol_state_machine *sm,
387 const u8 *eap, size_t len)
388 {
389 const u8 *identity;
390 size_t identity_len;
391
392 if (len <= sizeof(struct eap_hdr) ||
393 eap[sizeof(struct eap_hdr)] != EAP_TYPE_IDENTITY)
394 return;
395
396 identity = eap_get_identity(sm->eap, &identity_len);
397 if (identity == NULL)
398 return;
399
400 /* Save station identity for future RADIUS packets */
401 os_free(sm->identity);
402 sm->identity = os_malloc(identity_len + 1);
403 if (sm->identity == NULL) {
404 sm->identity_len = 0;
405 return;
406 }
407
408 os_memcpy(sm->identity, identity, identity_len);
409 sm->identity_len = identity_len;
410 sm->identity[identity_len] = '\0';
411 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
412 HOSTAPD_LEVEL_DEBUG, "STA identity '%s'", sm->identity);
413 sm->dot1xAuthEapolRespIdFramesRx++;
414 }
415
416
add_common_radius_sta_attr(struct hostapd_data * hapd,struct hostapd_radius_attr * req_attr,struct sta_info * sta,struct radius_msg * msg)417 static int add_common_radius_sta_attr(struct hostapd_data *hapd,
418 struct hostapd_radius_attr *req_attr,
419 struct sta_info *sta,
420 struct radius_msg *msg)
421 {
422 char buf[128];
423
424 if (!hostapd_config_get_radius_attr(req_attr,
425 RADIUS_ATTR_NAS_PORT) &&
426 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT, sta->aid)) {
427 wpa_printf(MSG_ERROR, "Could not add NAS-Port");
428 return -1;
429 }
430
431 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
432 MAC2STR(sta->addr));
433 buf[sizeof(buf) - 1] = '\0';
434 if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
435 (u8 *) buf, os_strlen(buf))) {
436 wpa_printf(MSG_ERROR, "Could not add Calling-Station-Id");
437 return -1;
438 }
439
440 if (sta->flags & WLAN_STA_PREAUTH) {
441 os_strlcpy(buf, "IEEE 802.11i Pre-Authentication",
442 sizeof(buf));
443 } else {
444 os_snprintf(buf, sizeof(buf), "CONNECT %d%sMbps %s",
445 radius_sta_rate(hapd, sta) / 2,
446 (radius_sta_rate(hapd, sta) & 1) ? ".5" : "",
447 radius_mode_txt(hapd));
448 buf[sizeof(buf) - 1] = '\0';
449 }
450 if (!hostapd_config_get_radius_attr(req_attr,
451 RADIUS_ATTR_CONNECT_INFO) &&
452 !radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
453 (u8 *) buf, os_strlen(buf))) {
454 wpa_printf(MSG_ERROR, "Could not add Connect-Info");
455 return -1;
456 }
457
458 if (sta->acct_session_id_hi || sta->acct_session_id_lo) {
459 os_snprintf(buf, sizeof(buf), "%08X-%08X",
460 sta->acct_session_id_hi, sta->acct_session_id_lo);
461 if (!radius_msg_add_attr(msg, RADIUS_ATTR_ACCT_SESSION_ID,
462 (u8 *) buf, os_strlen(buf))) {
463 wpa_printf(MSG_ERROR, "Could not add Acct-Session-Id");
464 return -1;
465 }
466 }
467
468 return 0;
469 }
470
471
add_common_radius_attr(struct hostapd_data * hapd,struct hostapd_radius_attr * req_attr,struct sta_info * sta,struct radius_msg * msg)472 int add_common_radius_attr(struct hostapd_data *hapd,
473 struct hostapd_radius_attr *req_attr,
474 struct sta_info *sta,
475 struct radius_msg *msg)
476 {
477 char buf[128];
478 struct hostapd_radius_attr *attr;
479
480 if (!hostapd_config_get_radius_attr(req_attr,
481 RADIUS_ATTR_NAS_IP_ADDRESS) &&
482 hapd->conf->own_ip_addr.af == AF_INET &&
483 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
484 (u8 *) &hapd->conf->own_ip_addr.u.v4, 4)) {
485 wpa_printf(MSG_ERROR, "Could not add NAS-IP-Address");
486 return -1;
487 }
488
489 #ifdef CONFIG_IPV6
490 if (!hostapd_config_get_radius_attr(req_attr,
491 RADIUS_ATTR_NAS_IPV6_ADDRESS) &&
492 hapd->conf->own_ip_addr.af == AF_INET6 &&
493 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IPV6_ADDRESS,
494 (u8 *) &hapd->conf->own_ip_addr.u.v6, 16)) {
495 wpa_printf(MSG_ERROR, "Could not add NAS-IPv6-Address");
496 return -1;
497 }
498 #endif /* CONFIG_IPV6 */
499
500 if (!hostapd_config_get_radius_attr(req_attr,
501 RADIUS_ATTR_NAS_IDENTIFIER) &&
502 hapd->conf->nas_identifier &&
503 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IDENTIFIER,
504 (u8 *) hapd->conf->nas_identifier,
505 os_strlen(hapd->conf->nas_identifier))) {
506 wpa_printf(MSG_ERROR, "Could not add NAS-Identifier");
507 return -1;
508 }
509
510 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT ":%s",
511 MAC2STR(hapd->own_addr),
512 wpa_ssid_txt(hapd->conf->ssid.ssid,
513 hapd->conf->ssid.ssid_len));
514 buf[sizeof(buf) - 1] = '\0';
515 if (!hostapd_config_get_radius_attr(req_attr,
516 RADIUS_ATTR_CALLED_STATION_ID) &&
517 !radius_msg_add_attr(msg, RADIUS_ATTR_CALLED_STATION_ID,
518 (u8 *) buf, os_strlen(buf))) {
519 wpa_printf(MSG_ERROR, "Could not add Called-Station-Id");
520 return -1;
521 }
522
523 if (!hostapd_config_get_radius_attr(req_attr,
524 RADIUS_ATTR_NAS_PORT_TYPE) &&
525 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
526 RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
527 wpa_printf(MSG_ERROR, "Could not add NAS-Port-Type");
528 return -1;
529 }
530
531 if (sta && add_common_radius_sta_attr(hapd, req_attr, sta, msg) < 0)
532 return -1;
533
534 for (attr = req_attr; attr; attr = attr->next) {
535 if (!radius_msg_add_attr(msg, attr->type,
536 wpabuf_head(attr->val),
537 wpabuf_len(attr->val))) {
538 wpa_printf(MSG_ERROR, "Could not add RADIUS "
539 "attribute");
540 return -1;
541 }
542 }
543
544 return 0;
545 }
546
547
ieee802_1x_encapsulate_radius(struct hostapd_data * hapd,struct sta_info * sta,const u8 * eap,size_t len)548 static void ieee802_1x_encapsulate_radius(struct hostapd_data *hapd,
549 struct sta_info *sta,
550 const u8 *eap, size_t len)
551 {
552 struct radius_msg *msg;
553 struct eapol_state_machine *sm = sta->eapol_sm;
554
555 if (sm == NULL)
556 return;
557
558 ieee802_1x_learn_identity(hapd, sm, eap, len);
559
560 wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
561 "packet");
562
563 sm->radius_identifier = radius_client_get_id(hapd->radius);
564 msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
565 sm->radius_identifier);
566 if (msg == NULL) {
567 printf("Could not create net RADIUS packet\n");
568 return;
569 }
570
571 radius_msg_make_authenticator(msg, (u8 *) sta, sizeof(*sta));
572
573 if (sm->identity &&
574 !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
575 sm->identity, sm->identity_len)) {
576 printf("Could not add User-Name\n");
577 goto fail;
578 }
579
580 if (add_common_radius_attr(hapd, hapd->conf->radius_auth_req_attr, sta,
581 msg) < 0)
582 goto fail;
583
584 /* TODO: should probably check MTU from driver config; 2304 is max for
585 * IEEE 802.11, but use 1400 to avoid problems with too large packets
586 */
587 if (!hostapd_config_get_radius_attr(hapd->conf->radius_auth_req_attr,
588 RADIUS_ATTR_FRAMED_MTU) &&
589 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
590 printf("Could not add Framed-MTU\n");
591 goto fail;
592 }
593
594 if (eap && !radius_msg_add_eap(msg, eap, len)) {
595 printf("Could not add EAP-Message\n");
596 goto fail;
597 }
598
599 /* State attribute must be copied if and only if this packet is
600 * Access-Request reply to the previous Access-Challenge */
601 if (sm->last_recv_radius &&
602 radius_msg_get_hdr(sm->last_recv_radius)->code ==
603 RADIUS_CODE_ACCESS_CHALLENGE) {
604 int res = radius_msg_copy_attr(msg, sm->last_recv_radius,
605 RADIUS_ATTR_STATE);
606 if (res < 0) {
607 printf("Could not copy State attribute from previous "
608 "Access-Challenge\n");
609 goto fail;
610 }
611 if (res > 0) {
612 wpa_printf(MSG_DEBUG, "Copied RADIUS State Attribute");
613 }
614 }
615
616 if (hapd->conf->radius_request_cui) {
617 const u8 *cui;
618 size_t cui_len;
619 /* Add previously learned CUI or nul CUI to request CUI */
620 if (sm->radius_cui) {
621 cui = wpabuf_head(sm->radius_cui);
622 cui_len = wpabuf_len(sm->radius_cui);
623 } else {
624 cui = (const u8 *) "\0";
625 cui_len = 1;
626 }
627 if (!radius_msg_add_attr(msg,
628 RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
629 cui, cui_len)) {
630 wpa_printf(MSG_ERROR, "Could not add CUI");
631 goto fail;
632 }
633 }
634
635 if (radius_client_send(hapd->radius, msg, RADIUS_AUTH, sta->addr) < 0)
636 goto fail;
637
638 return;
639
640 fail:
641 radius_msg_free(msg);
642 }
643 #endif /* CONFIG_NO_RADIUS */
644
645
handle_eap_response(struct hostapd_data * hapd,struct sta_info * sta,struct eap_hdr * eap,size_t len)646 static void handle_eap_response(struct hostapd_data *hapd,
647 struct sta_info *sta, struct eap_hdr *eap,
648 size_t len)
649 {
650 u8 type, *data;
651 struct eapol_state_machine *sm = sta->eapol_sm;
652 if (sm == NULL)
653 return;
654
655 data = (u8 *) (eap + 1);
656
657 if (len < sizeof(*eap) + 1) {
658 printf("handle_eap_response: too short response data\n");
659 return;
660 }
661
662 sm->eap_type_supp = type = data[0];
663
664 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
665 HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
666 "id=%d len=%d) from STA: EAP Response-%s (%d)",
667 eap->code, eap->identifier, be_to_host16(eap->length),
668 eap_server_get_name(0, type), type);
669
670 sm->dot1xAuthEapolRespFramesRx++;
671
672 wpabuf_free(sm->eap_if->eapRespData);
673 sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
674 sm->eapolEap = TRUE;
675 }
676
677
678 /* Process incoming EAP packet from Supplicant */
handle_eap(struct hostapd_data * hapd,struct sta_info * sta,u8 * buf,size_t len)679 static void handle_eap(struct hostapd_data *hapd, struct sta_info *sta,
680 u8 *buf, size_t len)
681 {
682 struct eap_hdr *eap;
683 u16 eap_len;
684
685 if (len < sizeof(*eap)) {
686 printf(" too short EAP packet\n");
687 return;
688 }
689
690 eap = (struct eap_hdr *) buf;
691
692 eap_len = be_to_host16(eap->length);
693 wpa_printf(MSG_DEBUG, "EAP: code=%d identifier=%d length=%d",
694 eap->code, eap->identifier, eap_len);
695 if (eap_len < sizeof(*eap)) {
696 wpa_printf(MSG_DEBUG, " Invalid EAP length");
697 return;
698 } else if (eap_len > len) {
699 wpa_printf(MSG_DEBUG, " Too short frame to contain this EAP "
700 "packet");
701 return;
702 } else if (eap_len < len) {
703 wpa_printf(MSG_DEBUG, " Ignoring %lu extra bytes after EAP "
704 "packet", (unsigned long) len - eap_len);
705 }
706
707 switch (eap->code) {
708 case EAP_CODE_REQUEST:
709 wpa_printf(MSG_DEBUG, " (request)");
710 return;
711 case EAP_CODE_RESPONSE:
712 wpa_printf(MSG_DEBUG, " (response)");
713 handle_eap_response(hapd, sta, eap, eap_len);
714 break;
715 case EAP_CODE_SUCCESS:
716 wpa_printf(MSG_DEBUG, " (success)");
717 return;
718 case EAP_CODE_FAILURE:
719 wpa_printf(MSG_DEBUG, " (failure)");
720 return;
721 default:
722 wpa_printf(MSG_DEBUG, " (unknown code)");
723 return;
724 }
725 }
726
727
728 static struct eapol_state_machine *
ieee802_1x_alloc_eapol_sm(struct hostapd_data * hapd,struct sta_info * sta)729 ieee802_1x_alloc_eapol_sm(struct hostapd_data *hapd, struct sta_info *sta)
730 {
731 int flags = 0;
732 if (sta->flags & WLAN_STA_PREAUTH)
733 flags |= EAPOL_SM_PREAUTH;
734 if (sta->wpa_sm) {
735 flags |= EAPOL_SM_USES_WPA;
736 if (wpa_auth_sta_get_pmksa(sta->wpa_sm))
737 flags |= EAPOL_SM_FROM_PMKSA_CACHE;
738 }
739 return eapol_auth_alloc(hapd->eapol_auth, sta->addr, flags,
740 sta->wps_ie, sta->p2p_ie, sta,
741 sta->identity, sta->radius_cui);
742 }
743
744
745 /**
746 * ieee802_1x_receive - Process the EAPOL frames from the Supplicant
747 * @hapd: hostapd BSS data
748 * @sa: Source address (sender of the EAPOL frame)
749 * @buf: EAPOL frame
750 * @len: Length of buf in octets
751 *
752 * This function is called for each incoming EAPOL frame from the interface
753 */
ieee802_1x_receive(struct hostapd_data * hapd,const u8 * sa,const u8 * buf,size_t len)754 void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf,
755 size_t len)
756 {
757 struct sta_info *sta;
758 struct ieee802_1x_hdr *hdr;
759 struct ieee802_1x_eapol_key *key;
760 u16 datalen;
761 struct rsn_pmksa_cache_entry *pmksa;
762 int key_mgmt;
763
764 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa &&
765 !hapd->conf->wps_state)
766 return;
767
768 wpa_printf(MSG_DEBUG, "IEEE 802.1X: %lu bytes from " MACSTR,
769 (unsigned long) len, MAC2STR(sa));
770 sta = ap_get_sta(hapd, sa);
771 if (!sta || (!(sta->flags & (WLAN_STA_ASSOC | WLAN_STA_PREAUTH)) &&
772 !(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED))) {
773 wpa_printf(MSG_DEBUG, "IEEE 802.1X data frame from not "
774 "associated/Pre-authenticating STA");
775 return;
776 }
777
778 if (len < sizeof(*hdr)) {
779 printf(" too short IEEE 802.1X packet\n");
780 return;
781 }
782
783 hdr = (struct ieee802_1x_hdr *) buf;
784 datalen = be_to_host16(hdr->length);
785 wpa_printf(MSG_DEBUG, " IEEE 802.1X: version=%d type=%d length=%d",
786 hdr->version, hdr->type, datalen);
787
788 if (len - sizeof(*hdr) < datalen) {
789 printf(" frame too short for this IEEE 802.1X packet\n");
790 if (sta->eapol_sm)
791 sta->eapol_sm->dot1xAuthEapLengthErrorFramesRx++;
792 return;
793 }
794 if (len - sizeof(*hdr) > datalen) {
795 wpa_printf(MSG_DEBUG, " ignoring %lu extra octets after "
796 "IEEE 802.1X packet",
797 (unsigned long) len - sizeof(*hdr) - datalen);
798 }
799
800 if (sta->eapol_sm) {
801 sta->eapol_sm->dot1xAuthLastEapolFrameVersion = hdr->version;
802 sta->eapol_sm->dot1xAuthEapolFramesRx++;
803 }
804
805 key = (struct ieee802_1x_eapol_key *) (hdr + 1);
806 if (datalen >= sizeof(struct ieee802_1x_eapol_key) &&
807 hdr->type == IEEE802_1X_TYPE_EAPOL_KEY &&
808 (key->type == EAPOL_KEY_TYPE_WPA ||
809 key->type == EAPOL_KEY_TYPE_RSN)) {
810 wpa_receive(hapd->wpa_auth, sta->wpa_sm, (u8 *) hdr,
811 sizeof(*hdr) + datalen);
812 return;
813 }
814
815 if (!hapd->conf->ieee802_1x &&
816 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
817 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
818 "802.1X not enabled and WPS not used");
819 return;
820 }
821
822 key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
823 if (key_mgmt != -1 && wpa_key_mgmt_wpa_psk(key_mgmt)) {
824 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
825 "STA is using PSK");
826 return;
827 }
828
829 if (!sta->eapol_sm) {
830 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
831 if (!sta->eapol_sm)
832 return;
833
834 #ifdef CONFIG_WPS
835 if (!hapd->conf->ieee802_1x) {
836 u32 wflags = sta->flags & (WLAN_STA_WPS |
837 WLAN_STA_WPS2 |
838 WLAN_STA_MAYBE_WPS);
839 if (wflags == WLAN_STA_MAYBE_WPS ||
840 wflags == (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) {
841 /*
842 * Delay EAPOL frame transmission until a
843 * possible WPS STA initiates the handshake
844 * with EAPOL-Start. Only allow the wait to be
845 * skipped if the STA is known to support WPS
846 * 2.0.
847 */
848 wpa_printf(MSG_DEBUG, "WPS: Do not start "
849 "EAPOL until EAPOL-Start is "
850 "received");
851 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
852 }
853 }
854 #endif /* CONFIG_WPS */
855
856 sta->eapol_sm->eap_if->portEnabled = TRUE;
857 }
858
859 /* since we support version 1, we can ignore version field and proceed
860 * as specified in version 1 standard [IEEE Std 802.1X-2001, 7.5.5] */
861 /* TODO: actually, we are not version 1 anymore.. However, Version 2
862 * does not change frame contents, so should be ok to process frames
863 * more or less identically. Some changes might be needed for
864 * verification of fields. */
865
866 switch (hdr->type) {
867 case IEEE802_1X_TYPE_EAP_PACKET:
868 handle_eap(hapd, sta, (u8 *) (hdr + 1), datalen);
869 break;
870
871 case IEEE802_1X_TYPE_EAPOL_START:
872 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
873 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Start "
874 "from STA");
875 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
876 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
877 if (pmksa) {
878 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
879 HOSTAPD_LEVEL_DEBUG, "cached PMKSA "
880 "available - ignore it since "
881 "STA sent EAPOL-Start");
882 wpa_auth_sta_clear_pmksa(sta->wpa_sm, pmksa);
883 }
884 sta->eapol_sm->eapolStart = TRUE;
885 sta->eapol_sm->dot1xAuthEapolStartFramesRx++;
886 eap_server_clear_identity(sta->eapol_sm->eap);
887 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
888 break;
889
890 case IEEE802_1X_TYPE_EAPOL_LOGOFF:
891 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
892 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Logoff "
893 "from STA");
894 sta->acct_terminate_cause =
895 RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
896 accounting_sta_stop(hapd, sta);
897 sta->eapol_sm->eapolLogoff = TRUE;
898 sta->eapol_sm->dot1xAuthEapolLogoffFramesRx++;
899 eap_server_clear_identity(sta->eapol_sm->eap);
900 break;
901
902 case IEEE802_1X_TYPE_EAPOL_KEY:
903 wpa_printf(MSG_DEBUG, " EAPOL-Key");
904 if (!ap_sta_is_authorized(sta)) {
905 wpa_printf(MSG_DEBUG, " Dropped key data from "
906 "unauthorized Supplicant");
907 break;
908 }
909 break;
910
911 case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT:
912 wpa_printf(MSG_DEBUG, " EAPOL-Encapsulated-ASF-Alert");
913 /* TODO: implement support for this; show data */
914 break;
915
916 default:
917 wpa_printf(MSG_DEBUG, " unknown IEEE 802.1X packet type");
918 sta->eapol_sm->dot1xAuthInvalidEapolFramesRx++;
919 break;
920 }
921
922 eapol_auth_step(sta->eapol_sm);
923 }
924
925
926 /**
927 * ieee802_1x_new_station - Start IEEE 802.1X authentication
928 * @hapd: hostapd BSS data
929 * @sta: The station
930 *
931 * This function is called to start IEEE 802.1X authentication when a new
932 * station completes IEEE 802.11 association.
933 */
ieee802_1x_new_station(struct hostapd_data * hapd,struct sta_info * sta)934 void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta)
935 {
936 struct rsn_pmksa_cache_entry *pmksa;
937 int reassoc = 1;
938 int force_1x = 0;
939 int key_mgmt;
940
941 #ifdef CONFIG_WPS
942 if (hapd->conf->wps_state && hapd->conf->wpa &&
943 (sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
944 /*
945 * Need to enable IEEE 802.1X/EAPOL state machines for possible
946 * WPS handshake even if IEEE 802.1X/EAPOL is not used for
947 * authentication in this BSS.
948 */
949 force_1x = 1;
950 }
951 #endif /* CONFIG_WPS */
952
953 if (!force_1x && !hapd->conf->ieee802_1x) {
954 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - "
955 "802.1X not enabled or forced for WPS");
956 /*
957 * Clear any possible EAPOL authenticator state to support
958 * reassociation change from WPS to PSK.
959 */
960 ieee802_1x_free_station(sta);
961 return;
962 }
963
964 key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
965 if (key_mgmt != -1 && wpa_key_mgmt_wpa_psk(key_mgmt)) {
966 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - using PSK");
967 /*
968 * Clear any possible EAPOL authenticator state to support
969 * reassociation change from WPA-EAP to PSK.
970 */
971 ieee802_1x_free_station(sta);
972 return;
973 }
974
975 if (sta->eapol_sm == NULL) {
976 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
977 HOSTAPD_LEVEL_DEBUG, "start authentication");
978 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
979 if (sta->eapol_sm == NULL) {
980 hostapd_logger(hapd, sta->addr,
981 HOSTAPD_MODULE_IEEE8021X,
982 HOSTAPD_LEVEL_INFO,
983 "failed to allocate state machine");
984 return;
985 }
986 reassoc = 0;
987 }
988
989 #ifdef CONFIG_WPS
990 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
991 if (!hapd->conf->ieee802_1x && !(sta->flags & WLAN_STA_WPS2)) {
992 /*
993 * Delay EAPOL frame transmission until a possible WPS STA
994 * initiates the handshake with EAPOL-Start. Only allow the
995 * wait to be skipped if the STA is known to support WPS 2.0.
996 */
997 wpa_printf(MSG_DEBUG, "WPS: Do not start EAPOL until "
998 "EAPOL-Start is received");
999 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
1000 }
1001 #endif /* CONFIG_WPS */
1002
1003 sta->eapol_sm->eap_if->portEnabled = TRUE;
1004
1005 #ifdef CONFIG_IEEE80211R
1006 if (sta->auth_alg == WLAN_AUTH_FT) {
1007 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1008 HOSTAPD_LEVEL_DEBUG,
1009 "PMK from FT - skip IEEE 802.1X/EAP");
1010 /* Setup EAPOL state machines to already authenticated state
1011 * because of existing FT information from R0KH. */
1012 sta->eapol_sm->keyRun = TRUE;
1013 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1014 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1015 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1016 sta->eapol_sm->authSuccess = TRUE;
1017 sta->eapol_sm->authFail = FALSE;
1018 if (sta->eapol_sm->eap)
1019 eap_sm_notify_cached(sta->eapol_sm->eap);
1020 /* TODO: get vlan_id from R0KH using RRB message */
1021 return;
1022 }
1023 #endif /* CONFIG_IEEE80211R */
1024
1025 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
1026 if (pmksa) {
1027 int old_vlanid;
1028
1029 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1030 HOSTAPD_LEVEL_DEBUG,
1031 "PMK from PMKSA cache - skip IEEE 802.1X/EAP");
1032 /* Setup EAPOL state machines to already authenticated state
1033 * because of existing PMKSA information in the cache. */
1034 sta->eapol_sm->keyRun = TRUE;
1035 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1036 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1037 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1038 sta->eapol_sm->authSuccess = TRUE;
1039 sta->eapol_sm->authFail = FALSE;
1040 if (sta->eapol_sm->eap)
1041 eap_sm_notify_cached(sta->eapol_sm->eap);
1042 old_vlanid = sta->vlan_id;
1043 pmksa_cache_to_eapol_data(pmksa, sta->eapol_sm);
1044 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
1045 sta->vlan_id = 0;
1046 ap_sta_bind_vlan(hapd, sta, old_vlanid);
1047 } else {
1048 if (reassoc) {
1049 /*
1050 * Force EAPOL state machines to start
1051 * re-authentication without having to wait for the
1052 * Supplicant to send EAPOL-Start.
1053 */
1054 sta->eapol_sm->reAuthenticate = TRUE;
1055 }
1056 eapol_auth_step(sta->eapol_sm);
1057 }
1058 }
1059
1060
ieee802_1x_free_station(struct sta_info * sta)1061 void ieee802_1x_free_station(struct sta_info *sta)
1062 {
1063 struct eapol_state_machine *sm = sta->eapol_sm;
1064
1065 if (sm == NULL)
1066 return;
1067
1068 sta->eapol_sm = NULL;
1069
1070 #ifndef CONFIG_NO_RADIUS
1071 radius_msg_free(sm->last_recv_radius);
1072 radius_free_class(&sm->radius_class);
1073 wpabuf_free(sm->radius_cui);
1074 #endif /* CONFIG_NO_RADIUS */
1075
1076 os_free(sm->identity);
1077 eapol_auth_free(sm);
1078 }
1079
1080
1081 #ifndef CONFIG_NO_RADIUS
ieee802_1x_decapsulate_radius(struct hostapd_data * hapd,struct sta_info * sta)1082 static void ieee802_1x_decapsulate_radius(struct hostapd_data *hapd,
1083 struct sta_info *sta)
1084 {
1085 struct wpabuf *eap;
1086 const struct eap_hdr *hdr;
1087 int eap_type = -1;
1088 char buf[64];
1089 struct radius_msg *msg;
1090 struct eapol_state_machine *sm = sta->eapol_sm;
1091
1092 if (sm == NULL || sm->last_recv_radius == NULL) {
1093 if (sm)
1094 sm->eap_if->aaaEapNoReq = TRUE;
1095 return;
1096 }
1097
1098 msg = sm->last_recv_radius;
1099
1100 eap = radius_msg_get_eap(msg);
1101 if (eap == NULL) {
1102 /* RFC 3579, Chap. 2.6.3:
1103 * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
1104 * attribute */
1105 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1106 HOSTAPD_LEVEL_WARNING, "could not extract "
1107 "EAP-Message from RADIUS message");
1108 sm->eap_if->aaaEapNoReq = TRUE;
1109 return;
1110 }
1111
1112 if (wpabuf_len(eap) < sizeof(*hdr)) {
1113 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1114 HOSTAPD_LEVEL_WARNING, "too short EAP packet "
1115 "received from authentication server");
1116 wpabuf_free(eap);
1117 sm->eap_if->aaaEapNoReq = TRUE;
1118 return;
1119 }
1120
1121 if (wpabuf_len(eap) > sizeof(*hdr))
1122 eap_type = (wpabuf_head_u8(eap))[sizeof(*hdr)];
1123
1124 hdr = wpabuf_head(eap);
1125 switch (hdr->code) {
1126 case EAP_CODE_REQUEST:
1127 if (eap_type >= 0)
1128 sm->eap_type_authsrv = eap_type;
1129 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
1130 eap_type >= 0 ? eap_server_get_name(0, eap_type) :
1131 "??",
1132 eap_type);
1133 break;
1134 case EAP_CODE_RESPONSE:
1135 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
1136 eap_type >= 0 ? eap_server_get_name(0, eap_type) :
1137 "??",
1138 eap_type);
1139 break;
1140 case EAP_CODE_SUCCESS:
1141 os_strlcpy(buf, "EAP Success", sizeof(buf));
1142 break;
1143 case EAP_CODE_FAILURE:
1144 os_strlcpy(buf, "EAP Failure", sizeof(buf));
1145 break;
1146 default:
1147 os_strlcpy(buf, "unknown EAP code", sizeof(buf));
1148 break;
1149 }
1150 buf[sizeof(buf) - 1] = '\0';
1151 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1152 HOSTAPD_LEVEL_DEBUG, "decapsulated EAP packet (code=%d "
1153 "id=%d len=%d) from RADIUS server: %s",
1154 hdr->code, hdr->identifier, be_to_host16(hdr->length),
1155 buf);
1156 sm->eap_if->aaaEapReq = TRUE;
1157
1158 wpabuf_free(sm->eap_if->aaaEapReqData);
1159 sm->eap_if->aaaEapReqData = eap;
1160 }
1161
1162
ieee802_1x_get_keys(struct hostapd_data * hapd,struct sta_info * sta,struct radius_msg * msg,struct radius_msg * req,const u8 * shared_secret,size_t shared_secret_len)1163 static void ieee802_1x_get_keys(struct hostapd_data *hapd,
1164 struct sta_info *sta, struct radius_msg *msg,
1165 struct radius_msg *req,
1166 const u8 *shared_secret,
1167 size_t shared_secret_len)
1168 {
1169 struct radius_ms_mppe_keys *keys;
1170 struct eapol_state_machine *sm = sta->eapol_sm;
1171 if (sm == NULL)
1172 return;
1173
1174 keys = radius_msg_get_ms_keys(msg, req, shared_secret,
1175 shared_secret_len);
1176
1177 if (keys && keys->send && keys->recv) {
1178 size_t len = keys->send_len + keys->recv_len;
1179 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Send-Key",
1180 keys->send, keys->send_len);
1181 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Recv-Key",
1182 keys->recv, keys->recv_len);
1183
1184 os_free(sm->eap_if->aaaEapKeyData);
1185 sm->eap_if->aaaEapKeyData = os_malloc(len);
1186 if (sm->eap_if->aaaEapKeyData) {
1187 os_memcpy(sm->eap_if->aaaEapKeyData, keys->recv,
1188 keys->recv_len);
1189 os_memcpy(sm->eap_if->aaaEapKeyData + keys->recv_len,
1190 keys->send, keys->send_len);
1191 sm->eap_if->aaaEapKeyDataLen = len;
1192 sm->eap_if->aaaEapKeyAvailable = TRUE;
1193 }
1194 }
1195
1196 if (keys) {
1197 os_free(keys->send);
1198 os_free(keys->recv);
1199 os_free(keys);
1200 }
1201 }
1202
1203
ieee802_1x_store_radius_class(struct hostapd_data * hapd,struct sta_info * sta,struct radius_msg * msg)1204 static void ieee802_1x_store_radius_class(struct hostapd_data *hapd,
1205 struct sta_info *sta,
1206 struct radius_msg *msg)
1207 {
1208 u8 *class;
1209 size_t class_len;
1210 struct eapol_state_machine *sm = sta->eapol_sm;
1211 int count, i;
1212 struct radius_attr_data *nclass;
1213 size_t nclass_count;
1214
1215 if (!hapd->conf->radius->acct_server || hapd->radius == NULL ||
1216 sm == NULL)
1217 return;
1218
1219 radius_free_class(&sm->radius_class);
1220 count = radius_msg_count_attr(msg, RADIUS_ATTR_CLASS, 1);
1221 if (count <= 0)
1222 return;
1223
1224 nclass = os_calloc(count, sizeof(struct radius_attr_data));
1225 if (nclass == NULL)
1226 return;
1227
1228 nclass_count = 0;
1229
1230 class = NULL;
1231 for (i = 0; i < count; i++) {
1232 do {
1233 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CLASS,
1234 &class, &class_len,
1235 class) < 0) {
1236 i = count;
1237 break;
1238 }
1239 } while (class_len < 1);
1240
1241 nclass[nclass_count].data = os_malloc(class_len);
1242 if (nclass[nclass_count].data == NULL)
1243 break;
1244
1245 os_memcpy(nclass[nclass_count].data, class, class_len);
1246 nclass[nclass_count].len = class_len;
1247 nclass_count++;
1248 }
1249
1250 sm->radius_class.attr = nclass;
1251 sm->radius_class.count = nclass_count;
1252 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Stored %lu RADIUS Class "
1253 "attributes for " MACSTR,
1254 (unsigned long) sm->radius_class.count,
1255 MAC2STR(sta->addr));
1256 }
1257
1258
1259 /* Update sta->identity based on User-Name attribute in Access-Accept */
ieee802_1x_update_sta_identity(struct hostapd_data * hapd,struct sta_info * sta,struct radius_msg * msg)1260 static void ieee802_1x_update_sta_identity(struct hostapd_data *hapd,
1261 struct sta_info *sta,
1262 struct radius_msg *msg)
1263 {
1264 u8 *buf, *identity;
1265 size_t len;
1266 struct eapol_state_machine *sm = sta->eapol_sm;
1267
1268 if (sm == NULL)
1269 return;
1270
1271 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &buf, &len,
1272 NULL) < 0)
1273 return;
1274
1275 identity = os_malloc(len + 1);
1276 if (identity == NULL)
1277 return;
1278
1279 os_memcpy(identity, buf, len);
1280 identity[len] = '\0';
1281
1282 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1283 HOSTAPD_LEVEL_DEBUG, "old identity '%s' updated with "
1284 "User-Name from Access-Accept '%s'",
1285 sm->identity ? (char *) sm->identity : "N/A",
1286 (char *) identity);
1287
1288 os_free(sm->identity);
1289 sm->identity = identity;
1290 sm->identity_len = len;
1291 }
1292
1293
1294 /* Update CUI based on Chargeable-User-Identity attribute in Access-Accept */
ieee802_1x_update_sta_cui(struct hostapd_data * hapd,struct sta_info * sta,struct radius_msg * msg)1295 static void ieee802_1x_update_sta_cui(struct hostapd_data *hapd,
1296 struct sta_info *sta,
1297 struct radius_msg *msg)
1298 {
1299 struct eapol_state_machine *sm = sta->eapol_sm;
1300 struct wpabuf *cui;
1301 u8 *buf;
1302 size_t len;
1303
1304 if (sm == NULL)
1305 return;
1306
1307 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
1308 &buf, &len, NULL) < 0)
1309 return;
1310
1311 cui = wpabuf_alloc_copy(buf, len);
1312 if (cui == NULL)
1313 return;
1314
1315 wpabuf_free(sm->radius_cui);
1316 sm->radius_cui = cui;
1317 }
1318
1319
1320 struct sta_id_search {
1321 u8 identifier;
1322 struct eapol_state_machine *sm;
1323 };
1324
1325
ieee802_1x_select_radius_identifier(struct hostapd_data * hapd,struct sta_info * sta,void * ctx)1326 static int ieee802_1x_select_radius_identifier(struct hostapd_data *hapd,
1327 struct sta_info *sta,
1328 void *ctx)
1329 {
1330 struct sta_id_search *id_search = ctx;
1331 struct eapol_state_machine *sm = sta->eapol_sm;
1332
1333 if (sm && sm->radius_identifier >= 0 &&
1334 sm->radius_identifier == id_search->identifier) {
1335 id_search->sm = sm;
1336 return 1;
1337 }
1338 return 0;
1339 }
1340
1341
1342 static struct eapol_state_machine *
ieee802_1x_search_radius_identifier(struct hostapd_data * hapd,u8 identifier)1343 ieee802_1x_search_radius_identifier(struct hostapd_data *hapd, u8 identifier)
1344 {
1345 struct sta_id_search id_search;
1346 id_search.identifier = identifier;
1347 id_search.sm = NULL;
1348 ap_for_each_sta(hapd, ieee802_1x_select_radius_identifier, &id_search);
1349 return id_search.sm;
1350 }
1351
1352
1353 /**
1354 * ieee802_1x_receive_auth - Process RADIUS frames from Authentication Server
1355 * @msg: RADIUS response message
1356 * @req: RADIUS request message
1357 * @shared_secret: RADIUS shared secret
1358 * @shared_secret_len: Length of shared_secret in octets
1359 * @data: Context data (struct hostapd_data *)
1360 * Returns: Processing status
1361 */
1362 static RadiusRxResult
ieee802_1x_receive_auth(struct radius_msg * msg,struct radius_msg * req,const u8 * shared_secret,size_t shared_secret_len,void * data)1363 ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
1364 const u8 *shared_secret, size_t shared_secret_len,
1365 void *data)
1366 {
1367 struct hostapd_data *hapd = data;
1368 struct sta_info *sta;
1369 u32 session_timeout = 0, termination_action, acct_interim_interval;
1370 int session_timeout_set, old_vlanid = 0;
1371 struct eapol_state_machine *sm;
1372 int override_eapReq = 0;
1373 struct radius_hdr *hdr = radius_msg_get_hdr(msg);
1374
1375 sm = ieee802_1x_search_radius_identifier(hapd, hdr->identifier);
1376 if (sm == NULL) {
1377 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Could not find matching "
1378 "station for this RADIUS message");
1379 return RADIUS_RX_UNKNOWN;
1380 }
1381 sta = sm->sta;
1382
1383 /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
1384 * present when packet contains an EAP-Message attribute */
1385 if (hdr->code == RADIUS_CODE_ACCESS_REJECT &&
1386 radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
1387 0) < 0 &&
1388 radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
1389 wpa_printf(MSG_DEBUG, "Allowing RADIUS Access-Reject without "
1390 "Message-Authenticator since it does not include "
1391 "EAP-Message");
1392 } else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
1393 req, 1)) {
1394 printf("Incoming RADIUS packet did not have correct "
1395 "Message-Authenticator - dropped\n");
1396 return RADIUS_RX_INVALID_AUTHENTICATOR;
1397 }
1398
1399 if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
1400 hdr->code != RADIUS_CODE_ACCESS_REJECT &&
1401 hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
1402 printf("Unknown RADIUS message code\n");
1403 return RADIUS_RX_UNKNOWN;
1404 }
1405
1406 sm->radius_identifier = -1;
1407 wpa_printf(MSG_DEBUG, "RADIUS packet matching with station " MACSTR,
1408 MAC2STR(sta->addr));
1409
1410 radius_msg_free(sm->last_recv_radius);
1411 sm->last_recv_radius = msg;
1412
1413 session_timeout_set =
1414 !radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
1415 &session_timeout);
1416 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_TERMINATION_ACTION,
1417 &termination_action))
1418 termination_action = RADIUS_TERMINATION_ACTION_DEFAULT;
1419
1420 if (hapd->conf->acct_interim_interval == 0 &&
1421 hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
1422 radius_msg_get_attr_int32(msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
1423 &acct_interim_interval) == 0) {
1424 if (acct_interim_interval < 60) {
1425 hostapd_logger(hapd, sta->addr,
1426 HOSTAPD_MODULE_IEEE8021X,
1427 HOSTAPD_LEVEL_INFO,
1428 "ignored too small "
1429 "Acct-Interim-Interval %d",
1430 acct_interim_interval);
1431 } else
1432 sta->acct_interim_interval = acct_interim_interval;
1433 }
1434
1435
1436 switch (hdr->code) {
1437 case RADIUS_CODE_ACCESS_ACCEPT:
1438 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
1439 sta->vlan_id = 0;
1440 #ifndef CONFIG_NO_VLAN
1441 else {
1442 old_vlanid = sta->vlan_id;
1443 sta->vlan_id = radius_msg_get_vlanid(msg);
1444 }
1445 if (sta->vlan_id > 0 &&
1446 hostapd_get_vlan_id_ifname(hapd->conf->vlan,
1447 sta->vlan_id)) {
1448 hostapd_logger(hapd, sta->addr,
1449 HOSTAPD_MODULE_RADIUS,
1450 HOSTAPD_LEVEL_INFO,
1451 "VLAN ID %d", sta->vlan_id);
1452 } else if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_REQUIRED) {
1453 sta->eapol_sm->authFail = TRUE;
1454 hostapd_logger(hapd, sta->addr,
1455 HOSTAPD_MODULE_IEEE8021X,
1456 HOSTAPD_LEVEL_INFO, "authentication "
1457 "server did not include required VLAN "
1458 "ID in Access-Accept");
1459 break;
1460 }
1461 #endif /* CONFIG_NO_VLAN */
1462
1463 if (ap_sta_bind_vlan(hapd, sta, old_vlanid) < 0)
1464 break;
1465
1466 /* RFC 3580, Ch. 3.17 */
1467 if (session_timeout_set && termination_action ==
1468 RADIUS_TERMINATION_ACTION_RADIUS_REQUEST) {
1469 sm->reAuthPeriod = session_timeout;
1470 } else if (session_timeout_set)
1471 ap_sta_session_timeout(hapd, sta, session_timeout);
1472
1473 sm->eap_if->aaaSuccess = TRUE;
1474 override_eapReq = 1;
1475 ieee802_1x_get_keys(hapd, sta, msg, req, shared_secret,
1476 shared_secret_len);
1477 ieee802_1x_store_radius_class(hapd, sta, msg);
1478 ieee802_1x_update_sta_identity(hapd, sta, msg);
1479 ieee802_1x_update_sta_cui(hapd, sta, msg);
1480 if (sm->eap_if->eapKeyAvailable &&
1481 wpa_auth_pmksa_add(sta->wpa_sm, sm->eapol_key_crypt,
1482 session_timeout_set ?
1483 (int) session_timeout : -1, sm) == 0) {
1484 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
1485 HOSTAPD_LEVEL_DEBUG,
1486 "Added PMKSA cache entry");
1487 }
1488 break;
1489 case RADIUS_CODE_ACCESS_REJECT:
1490 sm->eap_if->aaaFail = TRUE;
1491 override_eapReq = 1;
1492 break;
1493 case RADIUS_CODE_ACCESS_CHALLENGE:
1494 sm->eap_if->aaaEapReq = TRUE;
1495 if (session_timeout_set) {
1496 /* RFC 2869, Ch. 2.3.2; RFC 3580, Ch. 3.17 */
1497 sm->eap_if->aaaMethodTimeout = session_timeout;
1498 hostapd_logger(hapd, sm->addr,
1499 HOSTAPD_MODULE_IEEE8021X,
1500 HOSTAPD_LEVEL_DEBUG,
1501 "using EAP timeout of %d seconds (from "
1502 "RADIUS)",
1503 sm->eap_if->aaaMethodTimeout);
1504 } else {
1505 /*
1506 * Use dynamic retransmission behavior per EAP
1507 * specification.
1508 */
1509 sm->eap_if->aaaMethodTimeout = 0;
1510 }
1511 break;
1512 }
1513
1514 ieee802_1x_decapsulate_radius(hapd, sta);
1515 if (override_eapReq)
1516 sm->eap_if->aaaEapReq = FALSE;
1517
1518 eapol_auth_step(sm);
1519
1520 return RADIUS_RX_QUEUED;
1521 }
1522 #endif /* CONFIG_NO_RADIUS */
1523
1524
ieee802_1x_abort_auth(struct hostapd_data * hapd,struct sta_info * sta)1525 void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta)
1526 {
1527 struct eapol_state_machine *sm = sta->eapol_sm;
1528 if (sm == NULL)
1529 return;
1530
1531 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1532 HOSTAPD_LEVEL_DEBUG, "aborting authentication");
1533
1534 #ifndef CONFIG_NO_RADIUS
1535 radius_msg_free(sm->last_recv_radius);
1536 sm->last_recv_radius = NULL;
1537 #endif /* CONFIG_NO_RADIUS */
1538
1539 if (sm->eap_if->eapTimeout) {
1540 /*
1541 * Disconnect the STA since it did not reply to the last EAP
1542 * request and we cannot continue EAP processing (EAP-Failure
1543 * could only be sent if the EAP peer actually replied).
1544 */
1545 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "EAP Timeout, STA " MACSTR,
1546 MAC2STR(sta->addr));
1547
1548 sm->eap_if->portEnabled = FALSE;
1549 ap_sta_disconnect(hapd, sta, sta->addr,
1550 WLAN_REASON_PREV_AUTH_NOT_VALID);
1551 }
1552 }
1553
1554
ieee802_1x_rekey_broadcast(struct hostapd_data * hapd)1555 static int ieee802_1x_rekey_broadcast(struct hostapd_data *hapd)
1556 {
1557 struct eapol_authenticator *eapol = hapd->eapol_auth;
1558
1559 if (hapd->conf->default_wep_key_len < 1)
1560 return 0;
1561
1562 os_free(eapol->default_wep_key);
1563 eapol->default_wep_key = os_malloc(hapd->conf->default_wep_key_len);
1564 if (eapol->default_wep_key == NULL ||
1565 random_get_bytes(eapol->default_wep_key,
1566 hapd->conf->default_wep_key_len)) {
1567 printf("Could not generate random WEP key.\n");
1568 os_free(eapol->default_wep_key);
1569 eapol->default_wep_key = NULL;
1570 return -1;
1571 }
1572
1573 wpa_hexdump_key(MSG_DEBUG, "IEEE 802.1X: New default WEP key",
1574 eapol->default_wep_key,
1575 hapd->conf->default_wep_key_len);
1576
1577 return 0;
1578 }
1579
1580
ieee802_1x_sta_key_available(struct hostapd_data * hapd,struct sta_info * sta,void * ctx)1581 static int ieee802_1x_sta_key_available(struct hostapd_data *hapd,
1582 struct sta_info *sta, void *ctx)
1583 {
1584 if (sta->eapol_sm) {
1585 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1586 eapol_auth_step(sta->eapol_sm);
1587 }
1588 return 0;
1589 }
1590
1591
ieee802_1x_rekey(void * eloop_ctx,void * timeout_ctx)1592 static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx)
1593 {
1594 struct hostapd_data *hapd = eloop_ctx;
1595 struct eapol_authenticator *eapol = hapd->eapol_auth;
1596
1597 if (eapol->default_wep_key_idx >= 3)
1598 eapol->default_wep_key_idx =
1599 hapd->conf->individual_wep_key_len > 0 ? 1 : 0;
1600 else
1601 eapol->default_wep_key_idx++;
1602
1603 wpa_printf(MSG_DEBUG, "IEEE 802.1X: New default WEP key index %d",
1604 eapol->default_wep_key_idx);
1605
1606 if (ieee802_1x_rekey_broadcast(hapd)) {
1607 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
1608 HOSTAPD_LEVEL_WARNING, "failed to generate a "
1609 "new broadcast key");
1610 os_free(eapol->default_wep_key);
1611 eapol->default_wep_key = NULL;
1612 return;
1613 }
1614
1615 /* TODO: Could setup key for RX here, but change default TX keyid only
1616 * after new broadcast key has been sent to all stations. */
1617 if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
1618 broadcast_ether_addr,
1619 eapol->default_wep_key_idx, 1, NULL, 0,
1620 eapol->default_wep_key,
1621 hapd->conf->default_wep_key_len)) {
1622 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
1623 HOSTAPD_LEVEL_WARNING, "failed to configure a "
1624 "new broadcast key");
1625 os_free(eapol->default_wep_key);
1626 eapol->default_wep_key = NULL;
1627 return;
1628 }
1629
1630 ap_for_each_sta(hapd, ieee802_1x_sta_key_available, NULL);
1631
1632 if (hapd->conf->wep_rekeying_period > 0) {
1633 eloop_register_timeout(hapd->conf->wep_rekeying_period, 0,
1634 ieee802_1x_rekey, hapd, NULL);
1635 }
1636 }
1637
1638
ieee802_1x_eapol_send(void * ctx,void * sta_ctx,u8 type,const u8 * data,size_t datalen)1639 static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type,
1640 const u8 *data, size_t datalen)
1641 {
1642 #ifdef CONFIG_WPS
1643 struct sta_info *sta = sta_ctx;
1644
1645 if ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) ==
1646 WLAN_STA_MAYBE_WPS) {
1647 const u8 *identity;
1648 size_t identity_len;
1649 struct eapol_state_machine *sm = sta->eapol_sm;
1650
1651 identity = eap_get_identity(sm->eap, &identity_len);
1652 if (identity &&
1653 ((identity_len == WSC_ID_ENROLLEE_LEN &&
1654 os_memcmp(identity, WSC_ID_ENROLLEE,
1655 WSC_ID_ENROLLEE_LEN) == 0) ||
1656 (identity_len == WSC_ID_REGISTRAR_LEN &&
1657 os_memcmp(identity, WSC_ID_REGISTRAR,
1658 WSC_ID_REGISTRAR_LEN) == 0))) {
1659 wpa_printf(MSG_DEBUG, "WPS: WLAN_STA_MAYBE_WPS -> "
1660 "WLAN_STA_WPS");
1661 sta->flags |= WLAN_STA_WPS;
1662 }
1663 }
1664 #endif /* CONFIG_WPS */
1665
1666 ieee802_1x_send(ctx, sta_ctx, type, data, datalen);
1667 }
1668
1669
ieee802_1x_aaa_send(void * ctx,void * sta_ctx,const u8 * data,size_t datalen)1670 static void ieee802_1x_aaa_send(void *ctx, void *sta_ctx,
1671 const u8 *data, size_t datalen)
1672 {
1673 #ifndef CONFIG_NO_RADIUS
1674 struct hostapd_data *hapd = ctx;
1675 struct sta_info *sta = sta_ctx;
1676
1677 ieee802_1x_encapsulate_radius(hapd, sta, data, datalen);
1678 #endif /* CONFIG_NO_RADIUS */
1679 }
1680
1681
_ieee802_1x_finished(void * ctx,void * sta_ctx,int success,int preauth)1682 static void _ieee802_1x_finished(void *ctx, void *sta_ctx, int success,
1683 int preauth)
1684 {
1685 struct hostapd_data *hapd = ctx;
1686 struct sta_info *sta = sta_ctx;
1687 if (preauth)
1688 rsn_preauth_finished(hapd, sta, success);
1689 else
1690 ieee802_1x_finished(hapd, sta, success);
1691 }
1692
1693
ieee802_1x_get_eap_user(void * ctx,const u8 * identity,size_t identity_len,int phase2,struct eap_user * user)1694 static int ieee802_1x_get_eap_user(void *ctx, const u8 *identity,
1695 size_t identity_len, int phase2,
1696 struct eap_user *user)
1697 {
1698 struct hostapd_data *hapd = ctx;
1699 const struct hostapd_eap_user *eap_user;
1700 int i;
1701
1702 eap_user = hostapd_get_eap_user(hapd, identity, identity_len, phase2);
1703 if (eap_user == NULL)
1704 return -1;
1705
1706 os_memset(user, 0, sizeof(*user));
1707 user->phase2 = phase2;
1708 for (i = 0; i < EAP_MAX_METHODS; i++) {
1709 user->methods[i].vendor = eap_user->methods[i].vendor;
1710 user->methods[i].method = eap_user->methods[i].method;
1711 }
1712
1713 if (eap_user->password) {
1714 user->password = os_malloc(eap_user->password_len);
1715 if (user->password == NULL)
1716 return -1;
1717 os_memcpy(user->password, eap_user->password,
1718 eap_user->password_len);
1719 user->password_len = eap_user->password_len;
1720 user->password_hash = eap_user->password_hash;
1721 }
1722 user->force_version = eap_user->force_version;
1723 user->ttls_auth = eap_user->ttls_auth;
1724
1725 return 0;
1726 }
1727
1728
ieee802_1x_sta_entry_alive(void * ctx,const u8 * addr)1729 static int ieee802_1x_sta_entry_alive(void *ctx, const u8 *addr)
1730 {
1731 struct hostapd_data *hapd = ctx;
1732 struct sta_info *sta;
1733 sta = ap_get_sta(hapd, addr);
1734 if (sta == NULL || sta->eapol_sm == NULL)
1735 return 0;
1736 return 1;
1737 }
1738
1739
ieee802_1x_logger(void * ctx,const u8 * addr,eapol_logger_level level,const char * txt)1740 static void ieee802_1x_logger(void *ctx, const u8 *addr,
1741 eapol_logger_level level, const char *txt)
1742 {
1743 #ifndef CONFIG_NO_HOSTAPD_LOGGER
1744 struct hostapd_data *hapd = ctx;
1745 int hlevel;
1746
1747 switch (level) {
1748 case EAPOL_LOGGER_WARNING:
1749 hlevel = HOSTAPD_LEVEL_WARNING;
1750 break;
1751 case EAPOL_LOGGER_INFO:
1752 hlevel = HOSTAPD_LEVEL_INFO;
1753 break;
1754 case EAPOL_LOGGER_DEBUG:
1755 default:
1756 hlevel = HOSTAPD_LEVEL_DEBUG;
1757 break;
1758 }
1759
1760 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE8021X, hlevel, "%s",
1761 txt);
1762 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
1763 }
1764
1765
ieee802_1x_set_port_authorized(void * ctx,void * sta_ctx,int authorized)1766 static void ieee802_1x_set_port_authorized(void *ctx, void *sta_ctx,
1767 int authorized)
1768 {
1769 struct hostapd_data *hapd = ctx;
1770 struct sta_info *sta = sta_ctx;
1771 ieee802_1x_set_sta_authorized(hapd, sta, authorized);
1772 }
1773
1774
_ieee802_1x_abort_auth(void * ctx,void * sta_ctx)1775 static void _ieee802_1x_abort_auth(void *ctx, void *sta_ctx)
1776 {
1777 struct hostapd_data *hapd = ctx;
1778 struct sta_info *sta = sta_ctx;
1779 ieee802_1x_abort_auth(hapd, sta);
1780 }
1781
1782
_ieee802_1x_tx_key(void * ctx,void * sta_ctx)1783 static void _ieee802_1x_tx_key(void *ctx, void *sta_ctx)
1784 {
1785 struct hostapd_data *hapd = ctx;
1786 struct sta_info *sta = sta_ctx;
1787 ieee802_1x_tx_key(hapd, sta);
1788 }
1789
1790
ieee802_1x_eapol_event(void * ctx,void * sta_ctx,enum eapol_event type)1791 static void ieee802_1x_eapol_event(void *ctx, void *sta_ctx,
1792 enum eapol_event type)
1793 {
1794 /* struct hostapd_data *hapd = ctx; */
1795 struct sta_info *sta = sta_ctx;
1796 switch (type) {
1797 case EAPOL_AUTH_SM_CHANGE:
1798 wpa_auth_sm_notify(sta->wpa_sm);
1799 break;
1800 case EAPOL_AUTH_REAUTHENTICATE:
1801 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
1802 break;
1803 }
1804 }
1805
1806
ieee802_1x_init(struct hostapd_data * hapd)1807 int ieee802_1x_init(struct hostapd_data *hapd)
1808 {
1809 int i;
1810 struct eapol_auth_config conf;
1811 struct eapol_auth_cb cb;
1812
1813 os_memset(&conf, 0, sizeof(conf));
1814 conf.ctx = hapd;
1815 conf.eap_reauth_period = hapd->conf->eap_reauth_period;
1816 conf.wpa = hapd->conf->wpa;
1817 conf.individual_wep_key_len = hapd->conf->individual_wep_key_len;
1818 conf.eap_server = hapd->conf->eap_server;
1819 conf.ssl_ctx = hapd->ssl_ctx;
1820 conf.msg_ctx = hapd->msg_ctx;
1821 conf.eap_sim_db_priv = hapd->eap_sim_db_priv;
1822 conf.eap_req_id_text = hapd->conf->eap_req_id_text;
1823 conf.eap_req_id_text_len = hapd->conf->eap_req_id_text_len;
1824 conf.pac_opaque_encr_key = hapd->conf->pac_opaque_encr_key;
1825 conf.eap_fast_a_id = hapd->conf->eap_fast_a_id;
1826 conf.eap_fast_a_id_len = hapd->conf->eap_fast_a_id_len;
1827 conf.eap_fast_a_id_info = hapd->conf->eap_fast_a_id_info;
1828 conf.eap_fast_prov = hapd->conf->eap_fast_prov;
1829 conf.pac_key_lifetime = hapd->conf->pac_key_lifetime;
1830 conf.pac_key_refresh_time = hapd->conf->pac_key_refresh_time;
1831 conf.eap_sim_aka_result_ind = hapd->conf->eap_sim_aka_result_ind;
1832 conf.tnc = hapd->conf->tnc;
1833 conf.wps = hapd->wps;
1834 conf.fragment_size = hapd->conf->fragment_size;
1835 conf.pwd_group = hapd->conf->pwd_group;
1836 conf.pbc_in_m1 = hapd->conf->pbc_in_m1;
1837
1838 os_memset(&cb, 0, sizeof(cb));
1839 cb.eapol_send = ieee802_1x_eapol_send;
1840 cb.aaa_send = ieee802_1x_aaa_send;
1841 cb.finished = _ieee802_1x_finished;
1842 cb.get_eap_user = ieee802_1x_get_eap_user;
1843 cb.sta_entry_alive = ieee802_1x_sta_entry_alive;
1844 cb.logger = ieee802_1x_logger;
1845 cb.set_port_authorized = ieee802_1x_set_port_authorized;
1846 cb.abort_auth = _ieee802_1x_abort_auth;
1847 cb.tx_key = _ieee802_1x_tx_key;
1848 cb.eapol_event = ieee802_1x_eapol_event;
1849
1850 hapd->eapol_auth = eapol_auth_init(&conf, &cb);
1851 if (hapd->eapol_auth == NULL)
1852 return -1;
1853
1854 if ((hapd->conf->ieee802_1x || hapd->conf->wpa) &&
1855 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1))
1856 return -1;
1857
1858 #ifndef CONFIG_NO_RADIUS
1859 if (radius_client_register(hapd->radius, RADIUS_AUTH,
1860 ieee802_1x_receive_auth, hapd))
1861 return -1;
1862 #endif /* CONFIG_NO_RADIUS */
1863
1864 if (hapd->conf->default_wep_key_len) {
1865 for (i = 0; i < 4; i++)
1866 hostapd_drv_set_key(hapd->conf->iface, hapd,
1867 WPA_ALG_NONE, NULL, i, 0, NULL, 0,
1868 NULL, 0);
1869
1870 ieee802_1x_rekey(hapd, NULL);
1871
1872 if (hapd->eapol_auth->default_wep_key == NULL)
1873 return -1;
1874 }
1875
1876 return 0;
1877 }
1878
1879
ieee802_1x_deinit(struct hostapd_data * hapd)1880 void ieee802_1x_deinit(struct hostapd_data *hapd)
1881 {
1882 eloop_cancel_timeout(ieee802_1x_rekey, hapd, NULL);
1883
1884 if (hapd->driver != NULL &&
1885 (hapd->conf->ieee802_1x || hapd->conf->wpa))
1886 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
1887
1888 eapol_auth_deinit(hapd->eapol_auth);
1889 hapd->eapol_auth = NULL;
1890 }
1891
1892
ieee802_1x_tx_status(struct hostapd_data * hapd,struct sta_info * sta,const u8 * buf,size_t len,int ack)1893 int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
1894 const u8 *buf, size_t len, int ack)
1895 {
1896 struct ieee80211_hdr *hdr;
1897 u8 *pos;
1898 const unsigned char rfc1042_hdr[ETH_ALEN] =
1899 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
1900
1901 if (sta == NULL)
1902 return -1;
1903 if (len < sizeof(*hdr) + sizeof(rfc1042_hdr) + 2)
1904 return 0;
1905
1906 hdr = (struct ieee80211_hdr *) buf;
1907 pos = (u8 *) (hdr + 1);
1908 if (os_memcmp(pos, rfc1042_hdr, sizeof(rfc1042_hdr)) != 0)
1909 return 0;
1910 pos += sizeof(rfc1042_hdr);
1911 if (WPA_GET_BE16(pos) != ETH_P_PAE)
1912 return 0;
1913 pos += 2;
1914
1915 return ieee802_1x_eapol_tx_status(hapd, sta, pos, buf + len - pos,
1916 ack);
1917 }
1918
1919
ieee802_1x_eapol_tx_status(struct hostapd_data * hapd,struct sta_info * sta,const u8 * buf,int len,int ack)1920 int ieee802_1x_eapol_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
1921 const u8 *buf, int len, int ack)
1922 {
1923 const struct ieee802_1x_hdr *xhdr =
1924 (const struct ieee802_1x_hdr *) buf;
1925 const u8 *pos = buf + sizeof(*xhdr);
1926 struct ieee802_1x_eapol_key *key;
1927
1928 if (len < (int) sizeof(*xhdr))
1929 return 0;
1930 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR " TX status - version=%d "
1931 "type=%d length=%d - ack=%d",
1932 MAC2STR(sta->addr), xhdr->version, xhdr->type,
1933 be_to_host16(xhdr->length), ack);
1934
1935 if (xhdr->type != IEEE802_1X_TYPE_EAPOL_KEY)
1936 return 0;
1937
1938 if (pos + sizeof(struct wpa_eapol_key) <= buf + len) {
1939 const struct wpa_eapol_key *wpa;
1940 wpa = (const struct wpa_eapol_key *) pos;
1941 if (wpa->type == EAPOL_KEY_TYPE_RSN ||
1942 wpa->type == EAPOL_KEY_TYPE_WPA)
1943 wpa_auth_eapol_key_tx_status(hapd->wpa_auth,
1944 sta->wpa_sm, ack);
1945 }
1946
1947 /* EAPOL EAP-Packet packets are eventually re-sent by either Supplicant
1948 * or Authenticator state machines, but EAPOL-Key packets are not
1949 * retransmitted in case of failure. Try to re-send failed EAPOL-Key
1950 * packets couple of times because otherwise STA keys become
1951 * unsynchronized with AP. */
1952 if (!ack && pos + sizeof(*key) <= buf + len) {
1953 key = (struct ieee802_1x_eapol_key *) pos;
1954 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1955 HOSTAPD_LEVEL_DEBUG, "did not Ack EAPOL-Key "
1956 "frame (%scast index=%d)",
1957 key->key_index & BIT(7) ? "uni" : "broad",
1958 key->key_index & ~BIT(7));
1959 /* TODO: re-send EAPOL-Key couple of times (with short delay
1960 * between them?). If all attempt fail, report error and
1961 * deauthenticate STA so that it will get new keys when
1962 * authenticating again (e.g., after returning in range).
1963 * Separate limit/transmit state needed both for unicast and
1964 * broadcast keys(?) */
1965 }
1966 /* TODO: could move unicast key configuration from ieee802_1x_tx_key()
1967 * to here and change the key only if the EAPOL-Key packet was Acked.
1968 */
1969
1970 return 1;
1971 }
1972
1973
ieee802_1x_get_identity(struct eapol_state_machine * sm,size_t * len)1974 u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len)
1975 {
1976 if (sm == NULL || sm->identity == NULL)
1977 return NULL;
1978
1979 *len = sm->identity_len;
1980 return sm->identity;
1981 }
1982
1983
ieee802_1x_get_radius_class(struct eapol_state_machine * sm,size_t * len,int idx)1984 u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len,
1985 int idx)
1986 {
1987 if (sm == NULL || sm->radius_class.attr == NULL ||
1988 idx >= (int) sm->radius_class.count)
1989 return NULL;
1990
1991 *len = sm->radius_class.attr[idx].len;
1992 return sm->radius_class.attr[idx].data;
1993 }
1994
1995
ieee802_1x_get_radius_cui(struct eapol_state_machine * sm)1996 struct wpabuf * ieee802_1x_get_radius_cui(struct eapol_state_machine *sm)
1997 {
1998 if (sm == NULL)
1999 return NULL;
2000 return sm->radius_cui;
2001 }
2002
2003
ieee802_1x_get_key(struct eapol_state_machine * sm,size_t * len)2004 const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len)
2005 {
2006 *len = 0;
2007 if (sm == NULL)
2008 return NULL;
2009
2010 *len = sm->eap_if->eapKeyDataLen;
2011 return sm->eap_if->eapKeyData;
2012 }
2013
2014
ieee802_1x_notify_port_enabled(struct eapol_state_machine * sm,int enabled)2015 void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm,
2016 int enabled)
2017 {
2018 if (sm == NULL)
2019 return;
2020 sm->eap_if->portEnabled = enabled ? TRUE : FALSE;
2021 eapol_auth_step(sm);
2022 }
2023
2024
ieee802_1x_notify_port_valid(struct eapol_state_machine * sm,int valid)2025 void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm,
2026 int valid)
2027 {
2028 if (sm == NULL)
2029 return;
2030 sm->portValid = valid ? TRUE : FALSE;
2031 eapol_auth_step(sm);
2032 }
2033
2034
ieee802_1x_notify_pre_auth(struct eapol_state_machine * sm,int pre_auth)2035 void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, int pre_auth)
2036 {
2037 if (sm == NULL)
2038 return;
2039 if (pre_auth)
2040 sm->flags |= EAPOL_SM_PREAUTH;
2041 else
2042 sm->flags &= ~EAPOL_SM_PREAUTH;
2043 }
2044
2045
bool_txt(Boolean bool)2046 static const char * bool_txt(Boolean bool)
2047 {
2048 return bool ? "TRUE" : "FALSE";
2049 }
2050
2051
ieee802_1x_get_mib(struct hostapd_data * hapd,char * buf,size_t buflen)2052 int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
2053 {
2054 /* TODO */
2055 return 0;
2056 }
2057
2058
ieee802_1x_get_mib_sta(struct hostapd_data * hapd,struct sta_info * sta,char * buf,size_t buflen)2059 int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
2060 char *buf, size_t buflen)
2061 {
2062 int len = 0, ret;
2063 struct eapol_state_machine *sm = sta->eapol_sm;
2064 struct os_time t;
2065
2066 if (sm == NULL)
2067 return 0;
2068
2069 ret = os_snprintf(buf + len, buflen - len,
2070 "dot1xPaePortNumber=%d\n"
2071 "dot1xPaePortProtocolVersion=%d\n"
2072 "dot1xPaePortCapabilities=1\n"
2073 "dot1xPaePortInitialize=%d\n"
2074 "dot1xPaePortReauthenticate=FALSE\n",
2075 sta->aid,
2076 EAPOL_VERSION,
2077 sm->initialize);
2078 if (ret < 0 || (size_t) ret >= buflen - len)
2079 return len;
2080 len += ret;
2081
2082 /* dot1xAuthConfigTable */
2083 ret = os_snprintf(buf + len, buflen - len,
2084 "dot1xAuthPaeState=%d\n"
2085 "dot1xAuthBackendAuthState=%d\n"
2086 "dot1xAuthAdminControlledDirections=%d\n"
2087 "dot1xAuthOperControlledDirections=%d\n"
2088 "dot1xAuthAuthControlledPortStatus=%d\n"
2089 "dot1xAuthAuthControlledPortControl=%d\n"
2090 "dot1xAuthQuietPeriod=%u\n"
2091 "dot1xAuthServerTimeout=%u\n"
2092 "dot1xAuthReAuthPeriod=%u\n"
2093 "dot1xAuthReAuthEnabled=%s\n"
2094 "dot1xAuthKeyTxEnabled=%s\n",
2095 sm->auth_pae_state + 1,
2096 sm->be_auth_state + 1,
2097 sm->adminControlledDirections,
2098 sm->operControlledDirections,
2099 sm->authPortStatus,
2100 sm->portControl,
2101 sm->quietPeriod,
2102 sm->serverTimeout,
2103 sm->reAuthPeriod,
2104 bool_txt(sm->reAuthEnabled),
2105 bool_txt(sm->keyTxEnabled));
2106 if (ret < 0 || (size_t) ret >= buflen - len)
2107 return len;
2108 len += ret;
2109
2110 /* dot1xAuthStatsTable */
2111 ret = os_snprintf(buf + len, buflen - len,
2112 "dot1xAuthEapolFramesRx=%u\n"
2113 "dot1xAuthEapolFramesTx=%u\n"
2114 "dot1xAuthEapolStartFramesRx=%u\n"
2115 "dot1xAuthEapolLogoffFramesRx=%u\n"
2116 "dot1xAuthEapolRespIdFramesRx=%u\n"
2117 "dot1xAuthEapolRespFramesRx=%u\n"
2118 "dot1xAuthEapolReqIdFramesTx=%u\n"
2119 "dot1xAuthEapolReqFramesTx=%u\n"
2120 "dot1xAuthInvalidEapolFramesRx=%u\n"
2121 "dot1xAuthEapLengthErrorFramesRx=%u\n"
2122 "dot1xAuthLastEapolFrameVersion=%u\n"
2123 "dot1xAuthLastEapolFrameSource=" MACSTR "\n",
2124 sm->dot1xAuthEapolFramesRx,
2125 sm->dot1xAuthEapolFramesTx,
2126 sm->dot1xAuthEapolStartFramesRx,
2127 sm->dot1xAuthEapolLogoffFramesRx,
2128 sm->dot1xAuthEapolRespIdFramesRx,
2129 sm->dot1xAuthEapolRespFramesRx,
2130 sm->dot1xAuthEapolReqIdFramesTx,
2131 sm->dot1xAuthEapolReqFramesTx,
2132 sm->dot1xAuthInvalidEapolFramesRx,
2133 sm->dot1xAuthEapLengthErrorFramesRx,
2134 sm->dot1xAuthLastEapolFrameVersion,
2135 MAC2STR(sm->addr));
2136 if (ret < 0 || (size_t) ret >= buflen - len)
2137 return len;
2138 len += ret;
2139
2140 /* dot1xAuthDiagTable */
2141 ret = os_snprintf(buf + len, buflen - len,
2142 "dot1xAuthEntersConnecting=%u\n"
2143 "dot1xAuthEapLogoffsWhileConnecting=%u\n"
2144 "dot1xAuthEntersAuthenticating=%u\n"
2145 "dot1xAuthAuthSuccessesWhileAuthenticating=%u\n"
2146 "dot1xAuthAuthTimeoutsWhileAuthenticating=%u\n"
2147 "dot1xAuthAuthFailWhileAuthenticating=%u\n"
2148 "dot1xAuthAuthEapStartsWhileAuthenticating=%u\n"
2149 "dot1xAuthAuthEapLogoffWhileAuthenticating=%u\n"
2150 "dot1xAuthAuthReauthsWhileAuthenticated=%u\n"
2151 "dot1xAuthAuthEapStartsWhileAuthenticated=%u\n"
2152 "dot1xAuthAuthEapLogoffWhileAuthenticated=%u\n"
2153 "dot1xAuthBackendResponses=%u\n"
2154 "dot1xAuthBackendAccessChallenges=%u\n"
2155 "dot1xAuthBackendOtherRequestsToSupplicant=%u\n"
2156 "dot1xAuthBackendAuthSuccesses=%u\n"
2157 "dot1xAuthBackendAuthFails=%u\n",
2158 sm->authEntersConnecting,
2159 sm->authEapLogoffsWhileConnecting,
2160 sm->authEntersAuthenticating,
2161 sm->authAuthSuccessesWhileAuthenticating,
2162 sm->authAuthTimeoutsWhileAuthenticating,
2163 sm->authAuthFailWhileAuthenticating,
2164 sm->authAuthEapStartsWhileAuthenticating,
2165 sm->authAuthEapLogoffWhileAuthenticating,
2166 sm->authAuthReauthsWhileAuthenticated,
2167 sm->authAuthEapStartsWhileAuthenticated,
2168 sm->authAuthEapLogoffWhileAuthenticated,
2169 sm->backendResponses,
2170 sm->backendAccessChallenges,
2171 sm->backendOtherRequestsToSupplicant,
2172 sm->backendAuthSuccesses,
2173 sm->backendAuthFails);
2174 if (ret < 0 || (size_t) ret >= buflen - len)
2175 return len;
2176 len += ret;
2177
2178 /* dot1xAuthSessionStatsTable */
2179 os_get_time(&t);
2180 ret = os_snprintf(buf + len, buflen - len,
2181 /* TODO: dot1xAuthSessionOctetsRx */
2182 /* TODO: dot1xAuthSessionOctetsTx */
2183 /* TODO: dot1xAuthSessionFramesRx */
2184 /* TODO: dot1xAuthSessionFramesTx */
2185 "dot1xAuthSessionId=%08X-%08X\n"
2186 "dot1xAuthSessionAuthenticMethod=%d\n"
2187 "dot1xAuthSessionTime=%u\n"
2188 "dot1xAuthSessionTerminateCause=999\n"
2189 "dot1xAuthSessionUserName=%s\n",
2190 sta->acct_session_id_hi, sta->acct_session_id_lo,
2191 (wpa_key_mgmt_wpa_ieee8021x(
2192 wpa_auth_sta_key_mgmt(sta->wpa_sm))) ?
2193 1 : 2,
2194 (unsigned int) (t.sec - sta->acct_session_start),
2195 sm->identity);
2196 if (ret < 0 || (size_t) ret >= buflen - len)
2197 return len;
2198 len += ret;
2199
2200 return len;
2201 }
2202
2203
ieee802_1x_finished(struct hostapd_data * hapd,struct sta_info * sta,int success)2204 static void ieee802_1x_finished(struct hostapd_data *hapd,
2205 struct sta_info *sta, int success)
2206 {
2207 const u8 *key;
2208 size_t len;
2209 /* TODO: get PMKLifetime from WPA parameters */
2210 static const int dot11RSNAConfigPMKLifetime = 43200;
2211
2212 key = ieee802_1x_get_key(sta->eapol_sm, &len);
2213 if (success && key && len >= PMK_LEN &&
2214 wpa_auth_pmksa_add(sta->wpa_sm, key, dot11RSNAConfigPMKLifetime,
2215 sta->eapol_sm) == 0) {
2216 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
2217 HOSTAPD_LEVEL_DEBUG,
2218 "Added PMKSA cache entry (IEEE 802.1X)");
2219 }
2220
2221 if (!success) {
2222 /*
2223 * Many devices require deauthentication after WPS provisioning
2224 * and some may not be be able to do that themselves, so
2225 * disconnect the client here. In addition, this may also
2226 * benefit IEEE 802.1X/EAPOL authentication cases, too since
2227 * the EAPOL PAE state machine would remain in HELD state for
2228 * considerable amount of time and some EAP methods, like
2229 * EAP-FAST with anonymous provisioning, may require another
2230 * EAPOL authentication to be started to complete connection.
2231 */
2232 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "IEEE 802.1X: Force "
2233 "disconnection after EAP-Failure");
2234 /* Add a small sleep to increase likelihood of previously
2235 * requested EAP-Failure TX getting out before this should the
2236 * driver reorder operations.
2237 */
2238 os_sleep(0, 10000);
2239 #ifndef ANDROID_P2P
2240 /* We need not do this for driver. For AP-SME flags if we send this disassoc,
2241 * the p2p_client is gettig disassoc after it has completed the assoc
2242 */
2243 ap_sta_disconnect(hapd, sta, sta->addr,
2244 WLAN_REASON_IEEE_802_1X_AUTH_FAILED);
2245 #endif
2246 }
2247 }
2248