1 /*
2 * hostapd / IEEE 802.1X-2004 Authenticator
3 * Copyright (c) 2002-2019, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "utils/includes.h"
10
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 "wps_hostapd.h"
33 #include "hs20.h"
34 /* FIX: Not really a good thing to require ieee802_11.h here.. (FILS) */
35 #include "ieee802_11.h"
36 #include "ieee802_1x.h"
37
38
39 #ifdef CONFIG_HS20
40 static void ieee802_1x_wnm_notif_send(void *eloop_ctx, void *timeout_ctx);
41 #endif /* CONFIG_HS20 */
42 static void ieee802_1x_finished(struct hostapd_data *hapd,
43 struct sta_info *sta, int success,
44 int remediation);
45
46
ieee802_1x_send(struct hostapd_data * hapd,struct sta_info * sta,u8 type,const u8 * data,size_t datalen)47 static void ieee802_1x_send(struct hostapd_data *hapd, struct sta_info *sta,
48 u8 type, const u8 *data, size_t datalen)
49 {
50 u8 *buf;
51 struct ieee802_1x_hdr *xhdr;
52 size_t len;
53 int encrypt = 0;
54
55 len = sizeof(*xhdr) + datalen;
56 buf = os_zalloc(len);
57 if (buf == NULL) {
58 wpa_printf(MSG_ERROR, "malloc() failed for "
59 "ieee802_1x_send(len=%lu)",
60 (unsigned long) len);
61 return;
62 }
63
64 xhdr = (struct ieee802_1x_hdr *) buf;
65 xhdr->version = hapd->conf->eapol_version;
66 xhdr->type = type;
67 xhdr->length = host_to_be16(datalen);
68
69 if (datalen > 0 && data != NULL)
70 os_memcpy(xhdr + 1, data, datalen);
71
72 if (wpa_auth_pairwise_set(sta->wpa_sm))
73 encrypt = 1;
74 #ifdef CONFIG_TESTING_OPTIONS
75 if (hapd->ext_eapol_frame_io) {
76 size_t hex_len = 2 * len + 1;
77 char *hex = os_malloc(hex_len);
78
79 if (hex) {
80 wpa_snprintf_hex(hex, hex_len, buf, len);
81 wpa_msg(hapd->msg_ctx, MSG_INFO,
82 "EAPOL-TX " MACSTR " %s",
83 MAC2STR(sta->addr), hex);
84 os_free(hex);
85 }
86 } else
87 #endif /* CONFIG_TESTING_OPTIONS */
88 if (sta->flags & WLAN_STA_PREAUTH) {
89 rsn_preauth_send(hapd, sta, buf, len);
90 } else {
91 hostapd_drv_hapd_send_eapol(
92 hapd, sta->addr, buf, len,
93 encrypt, hostapd_sta_flags_to_drv(sta->flags));
94 }
95
96 os_free(buf);
97 }
98
99
ieee802_1x_set_sta_authorized(struct hostapd_data * hapd,struct sta_info * sta,int authorized)100 void ieee802_1x_set_sta_authorized(struct hostapd_data *hapd,
101 struct sta_info *sta, int authorized)
102 {
103 int res;
104
105 if (sta->flags & WLAN_STA_PREAUTH)
106 return;
107
108 if (authorized) {
109 ap_sta_set_authorized(hapd, sta, 1);
110 res = hostapd_set_authorized(hapd, sta, 1);
111 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
112 HOSTAPD_LEVEL_DEBUG, "authorizing port");
113 } else {
114 ap_sta_set_authorized(hapd, sta, 0);
115 res = hostapd_set_authorized(hapd, sta, 0);
116 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
117 HOSTAPD_LEVEL_DEBUG, "unauthorizing port");
118 }
119
120 if (res && errno != ENOENT) {
121 wpa_printf(MSG_DEBUG, "Could not set station " MACSTR
122 " flags for kernel driver (errno=%d).",
123 MAC2STR(sta->addr), errno);
124 }
125
126 if (authorized) {
127 os_get_reltime(&sta->connected_time);
128 accounting_sta_start(hapd, sta);
129 }
130 }
131
132
133 #ifndef CONFIG_FIPS
134 #ifndef CONFIG_NO_RC4
135
ieee802_1x_tx_key_one(struct hostapd_data * hapd,struct sta_info * sta,int idx,int broadcast,u8 * key_data,size_t key_len)136 static void ieee802_1x_tx_key_one(struct hostapd_data *hapd,
137 struct sta_info *sta,
138 int idx, int broadcast,
139 u8 *key_data, size_t key_len)
140 {
141 u8 *buf, *ekey;
142 struct ieee802_1x_hdr *hdr;
143 struct ieee802_1x_eapol_key *key;
144 size_t len, ekey_len;
145 struct eapol_state_machine *sm = sta->eapol_sm;
146
147 if (sm == NULL)
148 return;
149
150 len = sizeof(*key) + key_len;
151 buf = os_zalloc(sizeof(*hdr) + len);
152 if (buf == NULL)
153 return;
154
155 hdr = (struct ieee802_1x_hdr *) buf;
156 key = (struct ieee802_1x_eapol_key *) (hdr + 1);
157 key->type = EAPOL_KEY_TYPE_RC4;
158 WPA_PUT_BE16(key->key_length, key_len);
159 wpa_get_ntp_timestamp(key->replay_counter);
160
161 if (random_get_bytes(key->key_iv, sizeof(key->key_iv))) {
162 wpa_printf(MSG_ERROR, "Could not get random numbers");
163 os_free(buf);
164 return;
165 }
166
167 key->key_index = idx | (broadcast ? 0 : BIT(7));
168 if (hapd->conf->eapol_key_index_workaround) {
169 /* According to some information, WinXP Supplicant seems to
170 * interpret bit7 as an indication whether the key is to be
171 * activated, so make it possible to enable workaround that
172 * sets this bit for all keys. */
173 key->key_index |= BIT(7);
174 }
175
176 /* Key is encrypted using "Key-IV + MSK[0..31]" as the RC4-key and
177 * MSK[32..63] is used to sign the message. */
178 if (sm->eap_if->eapKeyData == NULL || sm->eap_if->eapKeyDataLen < 64) {
179 wpa_printf(MSG_ERROR, "No eapKeyData available for encrypting "
180 "and signing EAPOL-Key");
181 os_free(buf);
182 return;
183 }
184 os_memcpy((u8 *) (key + 1), key_data, key_len);
185 ekey_len = sizeof(key->key_iv) + 32;
186 ekey = os_malloc(ekey_len);
187 if (ekey == NULL) {
188 wpa_printf(MSG_ERROR, "Could not encrypt key");
189 os_free(buf);
190 return;
191 }
192 os_memcpy(ekey, key->key_iv, sizeof(key->key_iv));
193 os_memcpy(ekey + sizeof(key->key_iv), sm->eap_if->eapKeyData, 32);
194 rc4_skip(ekey, ekey_len, 0, (u8 *) (key + 1), key_len);
195 os_free(ekey);
196
197 /* This header is needed here for HMAC-MD5, but it will be regenerated
198 * in ieee802_1x_send() */
199 hdr->version = hapd->conf->eapol_version;
200 hdr->type = IEEE802_1X_TYPE_EAPOL_KEY;
201 hdr->length = host_to_be16(len);
202 hmac_md5(sm->eap_if->eapKeyData + 32, 32, buf, sizeof(*hdr) + len,
203 key->key_signature);
204
205 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key to " MACSTR
206 " (%s index=%d)", MAC2STR(sm->addr),
207 broadcast ? "broadcast" : "unicast", idx);
208 ieee802_1x_send(hapd, sta, IEEE802_1X_TYPE_EAPOL_KEY, (u8 *) key, len);
209 if (sta->eapol_sm)
210 sta->eapol_sm->dot1xAuthEapolFramesTx++;
211 os_free(buf);
212 }
213
214
ieee802_1x_tx_key(struct hostapd_data * hapd,struct sta_info * sta)215 static void ieee802_1x_tx_key(struct hostapd_data *hapd, struct sta_info *sta)
216 {
217 struct eapol_authenticator *eapol = hapd->eapol_auth;
218 struct eapol_state_machine *sm = sta->eapol_sm;
219
220 if (sm == NULL || !sm->eap_if->eapKeyData)
221 return;
222
223 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key(s) to " MACSTR,
224 MAC2STR(sta->addr));
225
226 #ifndef CONFIG_NO_VLAN
227 if (sta->vlan_id > 0) {
228 wpa_printf(MSG_ERROR, "Using WEP with vlans is not supported.");
229 return;
230 }
231 #endif /* CONFIG_NO_VLAN */
232
233 if (eapol->default_wep_key) {
234 ieee802_1x_tx_key_one(hapd, sta, eapol->default_wep_key_idx, 1,
235 eapol->default_wep_key,
236 hapd->conf->default_wep_key_len);
237 }
238
239 if (hapd->conf->individual_wep_key_len > 0) {
240 u8 *ikey;
241 ikey = os_malloc(hapd->conf->individual_wep_key_len);
242 if (ikey == NULL ||
243 random_get_bytes(ikey, hapd->conf->individual_wep_key_len))
244 {
245 wpa_printf(MSG_ERROR, "Could not generate random "
246 "individual WEP key.");
247 os_free(ikey);
248 return;
249 }
250
251 wpa_hexdump_key(MSG_DEBUG, "Individual WEP key",
252 ikey, hapd->conf->individual_wep_key_len);
253
254 ieee802_1x_tx_key_one(hapd, sta, 0, 0, ikey,
255 hapd->conf->individual_wep_key_len);
256
257 /* TODO: set encryption in TX callback, i.e., only after STA
258 * has ACKed EAPOL-Key frame */
259 if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
260 sta->addr, 0, 1, NULL, 0, ikey,
261 hapd->conf->individual_wep_key_len)) {
262 wpa_printf(MSG_ERROR, "Could not set individual WEP "
263 "encryption.");
264 }
265
266 os_free(ikey);
267 }
268 }
269
270 #endif /* CONFIG_NO_RC4 */
271 #endif /* CONFIG_FIPS */
272
273
radius_mode_txt(struct hostapd_data * hapd)274 const char *radius_mode_txt(struct hostapd_data *hapd)
275 {
276 switch (hapd->iface->conf->hw_mode) {
277 case HOSTAPD_MODE_IEEE80211AD:
278 return "802.11ad";
279 case HOSTAPD_MODE_IEEE80211A:
280 return "802.11a";
281 case HOSTAPD_MODE_IEEE80211G:
282 return "802.11g";
283 case HOSTAPD_MODE_IEEE80211B:
284 default:
285 return "802.11b";
286 }
287 }
288
289
radius_sta_rate(struct hostapd_data * hapd,struct sta_info * sta)290 int radius_sta_rate(struct hostapd_data *hapd, struct sta_info *sta)
291 {
292 int i;
293 u8 rate = 0;
294
295 for (i = 0; i < sta->supported_rates_len; i++)
296 if ((sta->supported_rates[i] & 0x7f) > rate)
297 rate = sta->supported_rates[i] & 0x7f;
298
299 return rate;
300 }
301
302
303 #ifndef CONFIG_NO_RADIUS
ieee802_1x_learn_identity(struct hostapd_data * hapd,struct eapol_state_machine * sm,const u8 * eap,size_t len)304 static void ieee802_1x_learn_identity(struct hostapd_data *hapd,
305 struct eapol_state_machine *sm,
306 const u8 *eap, size_t len)
307 {
308 const u8 *identity;
309 size_t identity_len;
310 const struct eap_hdr *hdr = (const struct eap_hdr *) eap;
311
312 if (len <= sizeof(struct eap_hdr) ||
313 (hdr->code == EAP_CODE_RESPONSE &&
314 eap[sizeof(struct eap_hdr)] != EAP_TYPE_IDENTITY) ||
315 (hdr->code == EAP_CODE_INITIATE &&
316 eap[sizeof(struct eap_hdr)] != EAP_ERP_TYPE_REAUTH) ||
317 (hdr->code != EAP_CODE_RESPONSE &&
318 hdr->code != EAP_CODE_INITIATE))
319 return;
320
321 eap_erp_update_identity(sm->eap, eap, len);
322 identity = eap_get_identity(sm->eap, &identity_len);
323 if (identity == NULL)
324 return;
325
326 /* Save station identity for future RADIUS packets */
327 os_free(sm->identity);
328 sm->identity = (u8 *) dup_binstr(identity, identity_len);
329 if (sm->identity == NULL) {
330 sm->identity_len = 0;
331 return;
332 }
333
334 sm->identity_len = identity_len;
335 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
336 HOSTAPD_LEVEL_DEBUG, "STA identity '%s'", sm->identity);
337 sm->dot1xAuthEapolRespIdFramesRx++;
338 }
339
340
add_common_radius_sta_attr_rsn(struct hostapd_data * hapd,struct hostapd_radius_attr * req_attr,struct sta_info * sta,struct radius_msg * msg)341 static int add_common_radius_sta_attr_rsn(struct hostapd_data *hapd,
342 struct hostapd_radius_attr *req_attr,
343 struct sta_info *sta,
344 struct radius_msg *msg)
345 {
346 u32 suite;
347 int ver, val;
348
349 ver = wpa_auth_sta_wpa_version(sta->wpa_sm);
350 val = wpa_auth_get_pairwise(sta->wpa_sm);
351 suite = wpa_cipher_to_suite(ver, val);
352 if (val != -1 &&
353 !hostapd_config_get_radius_attr(req_attr,
354 RADIUS_ATTR_WLAN_PAIRWISE_CIPHER) &&
355 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_PAIRWISE_CIPHER,
356 suite)) {
357 wpa_printf(MSG_ERROR, "Could not add WLAN-Pairwise-Cipher");
358 return -1;
359 }
360
361 suite = wpa_cipher_to_suite(((hapd->conf->wpa & 0x2) ||
362 hapd->conf->osen) ?
363 WPA_PROTO_RSN : WPA_PROTO_WPA,
364 hapd->conf->wpa_group);
365 if (!hostapd_config_get_radius_attr(req_attr,
366 RADIUS_ATTR_WLAN_GROUP_CIPHER) &&
367 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_GROUP_CIPHER,
368 suite)) {
369 wpa_printf(MSG_ERROR, "Could not add WLAN-Group-Cipher");
370 return -1;
371 }
372
373 val = wpa_auth_sta_key_mgmt(sta->wpa_sm);
374 suite = wpa_akm_to_suite(val);
375 if (val != -1 &&
376 !hostapd_config_get_radius_attr(req_attr,
377 RADIUS_ATTR_WLAN_AKM_SUITE) &&
378 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_AKM_SUITE,
379 suite)) {
380 wpa_printf(MSG_ERROR, "Could not add WLAN-AKM-Suite");
381 return -1;
382 }
383
384 #ifdef CONFIG_IEEE80211W
385 if (hapd->conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
386 suite = wpa_cipher_to_suite(WPA_PROTO_RSN,
387 hapd->conf->group_mgmt_cipher);
388 if (!hostapd_config_get_radius_attr(
389 req_attr, RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER) &&
390 !radius_msg_add_attr_int32(
391 msg, RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER, suite)) {
392 wpa_printf(MSG_ERROR,
393 "Could not add WLAN-Group-Mgmt-Cipher");
394 return -1;
395 }
396 }
397 #endif /* CONFIG_IEEE80211W */
398
399 return 0;
400 }
401
402
add_common_radius_sta_attr(struct hostapd_data * hapd,struct hostapd_radius_attr * req_attr,struct sta_info * sta,struct radius_msg * msg)403 static int add_common_radius_sta_attr(struct hostapd_data *hapd,
404 struct hostapd_radius_attr *req_attr,
405 struct sta_info *sta,
406 struct radius_msg *msg)
407 {
408 char buf[128];
409
410 if (!hostapd_config_get_radius_attr(req_attr,
411 RADIUS_ATTR_SERVICE_TYPE) &&
412 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_SERVICE_TYPE,
413 RADIUS_SERVICE_TYPE_FRAMED)) {
414 wpa_printf(MSG_ERROR, "Could not add Service-Type");
415 return -1;
416 }
417
418 if (!hostapd_config_get_radius_attr(req_attr,
419 RADIUS_ATTR_NAS_PORT) &&
420 sta->aid > 0 &&
421 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT, sta->aid)) {
422 wpa_printf(MSG_ERROR, "Could not add NAS-Port");
423 return -1;
424 }
425
426 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
427 MAC2STR(sta->addr));
428 buf[sizeof(buf) - 1] = '\0';
429 if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
430 (u8 *) buf, os_strlen(buf))) {
431 wpa_printf(MSG_ERROR, "Could not add Calling-Station-Id");
432 return -1;
433 }
434
435 if (sta->flags & WLAN_STA_PREAUTH) {
436 os_strlcpy(buf, "IEEE 802.11i Pre-Authentication",
437 sizeof(buf));
438 } else {
439 os_snprintf(buf, sizeof(buf), "CONNECT %d%sMbps %s",
440 radius_sta_rate(hapd, sta) / 2,
441 (radius_sta_rate(hapd, sta) & 1) ? ".5" : "",
442 radius_mode_txt(hapd));
443 buf[sizeof(buf) - 1] = '\0';
444 }
445 if (!hostapd_config_get_radius_attr(req_attr,
446 RADIUS_ATTR_CONNECT_INFO) &&
447 !radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
448 (u8 *) buf, os_strlen(buf))) {
449 wpa_printf(MSG_ERROR, "Could not add Connect-Info");
450 return -1;
451 }
452
453 if (sta->acct_session_id) {
454 os_snprintf(buf, sizeof(buf), "%016llX",
455 (unsigned long long) sta->acct_session_id);
456 if (!radius_msg_add_attr(msg, RADIUS_ATTR_ACCT_SESSION_ID,
457 (u8 *) buf, os_strlen(buf))) {
458 wpa_printf(MSG_ERROR, "Could not add Acct-Session-Id");
459 return -1;
460 }
461 }
462
463 if ((hapd->conf->wpa & 2) &&
464 !hapd->conf->disable_pmksa_caching &&
465 sta->eapol_sm && sta->eapol_sm->acct_multi_session_id) {
466 os_snprintf(buf, sizeof(buf), "%016llX",
467 (unsigned long long)
468 sta->eapol_sm->acct_multi_session_id);
469 if (!radius_msg_add_attr(
470 msg, RADIUS_ATTR_ACCT_MULTI_SESSION_ID,
471 (u8 *) buf, os_strlen(buf))) {
472 wpa_printf(MSG_INFO,
473 "Could not add Acct-Multi-Session-Id");
474 return -1;
475 }
476 }
477
478 #ifdef CONFIG_IEEE80211R_AP
479 if (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) &&
480 sta->wpa_sm &&
481 (wpa_key_mgmt_ft(wpa_auth_sta_key_mgmt(sta->wpa_sm)) ||
482 sta->auth_alg == WLAN_AUTH_FT) &&
483 !hostapd_config_get_radius_attr(req_attr,
484 RADIUS_ATTR_MOBILITY_DOMAIN_ID) &&
485 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_MOBILITY_DOMAIN_ID,
486 WPA_GET_BE16(
487 hapd->conf->mobility_domain))) {
488 wpa_printf(MSG_ERROR, "Could not add Mobility-Domain-Id");
489 return -1;
490 }
491 #endif /* CONFIG_IEEE80211R_AP */
492
493 if ((hapd->conf->wpa || hapd->conf->osen) && sta->wpa_sm &&
494 add_common_radius_sta_attr_rsn(hapd, req_attr, sta, msg) < 0)
495 return -1;
496
497 return 0;
498 }
499
500
add_common_radius_attr(struct hostapd_data * hapd,struct hostapd_radius_attr * req_attr,struct sta_info * sta,struct radius_msg * msg)501 int add_common_radius_attr(struct hostapd_data *hapd,
502 struct hostapd_radius_attr *req_attr,
503 struct sta_info *sta,
504 struct radius_msg *msg)
505 {
506 char buf[128];
507 struct hostapd_radius_attr *attr;
508 int len;
509
510 if (!hostapd_config_get_radius_attr(req_attr,
511 RADIUS_ATTR_NAS_IP_ADDRESS) &&
512 hapd->conf->own_ip_addr.af == AF_INET &&
513 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
514 (u8 *) &hapd->conf->own_ip_addr.u.v4, 4)) {
515 wpa_printf(MSG_ERROR, "Could not add NAS-IP-Address");
516 return -1;
517 }
518
519 #ifdef CONFIG_IPV6
520 if (!hostapd_config_get_radius_attr(req_attr,
521 RADIUS_ATTR_NAS_IPV6_ADDRESS) &&
522 hapd->conf->own_ip_addr.af == AF_INET6 &&
523 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IPV6_ADDRESS,
524 (u8 *) &hapd->conf->own_ip_addr.u.v6, 16)) {
525 wpa_printf(MSG_ERROR, "Could not add NAS-IPv6-Address");
526 return -1;
527 }
528 #endif /* CONFIG_IPV6 */
529
530 if (!hostapd_config_get_radius_attr(req_attr,
531 RADIUS_ATTR_NAS_IDENTIFIER) &&
532 hapd->conf->nas_identifier &&
533 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IDENTIFIER,
534 (u8 *) hapd->conf->nas_identifier,
535 os_strlen(hapd->conf->nas_identifier))) {
536 wpa_printf(MSG_ERROR, "Could not add NAS-Identifier");
537 return -1;
538 }
539
540 len = os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT ":",
541 MAC2STR(hapd->own_addr));
542 os_memcpy(&buf[len], hapd->conf->ssid.ssid,
543 hapd->conf->ssid.ssid_len);
544 len += hapd->conf->ssid.ssid_len;
545 if (!hostapd_config_get_radius_attr(req_attr,
546 RADIUS_ATTR_CALLED_STATION_ID) &&
547 !radius_msg_add_attr(msg, RADIUS_ATTR_CALLED_STATION_ID,
548 (u8 *) buf, len)) {
549 wpa_printf(MSG_ERROR, "Could not add Called-Station-Id");
550 return -1;
551 }
552
553 if (!hostapd_config_get_radius_attr(req_attr,
554 RADIUS_ATTR_NAS_PORT_TYPE) &&
555 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
556 RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
557 wpa_printf(MSG_ERROR, "Could not add NAS-Port-Type");
558 return -1;
559 }
560
561 #ifdef CONFIG_INTERWORKING
562 if (hapd->conf->interworking &&
563 !is_zero_ether_addr(hapd->conf->hessid)) {
564 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
565 MAC2STR(hapd->conf->hessid));
566 buf[sizeof(buf) - 1] = '\0';
567 if (!hostapd_config_get_radius_attr(req_attr,
568 RADIUS_ATTR_WLAN_HESSID) &&
569 !radius_msg_add_attr(msg, RADIUS_ATTR_WLAN_HESSID,
570 (u8 *) buf, os_strlen(buf))) {
571 wpa_printf(MSG_ERROR, "Could not add WLAN-HESSID");
572 return -1;
573 }
574 }
575 #endif /* CONFIG_INTERWORKING */
576
577 if (sta && add_common_radius_sta_attr(hapd, req_attr, sta, msg) < 0)
578 return -1;
579
580 for (attr = req_attr; attr; attr = attr->next) {
581 if (!radius_msg_add_attr(msg, attr->type,
582 wpabuf_head(attr->val),
583 wpabuf_len(attr->val))) {
584 wpa_printf(MSG_ERROR, "Could not add RADIUS "
585 "attribute");
586 return -1;
587 }
588 }
589
590 return 0;
591 }
592
593
ieee802_1x_encapsulate_radius(struct hostapd_data * hapd,struct sta_info * sta,const u8 * eap,size_t len)594 void ieee802_1x_encapsulate_radius(struct hostapd_data *hapd,
595 struct sta_info *sta,
596 const u8 *eap, size_t len)
597 {
598 struct radius_msg *msg;
599 struct eapol_state_machine *sm = sta->eapol_sm;
600
601 if (sm == NULL)
602 return;
603
604 ieee802_1x_learn_identity(hapd, sm, eap, len);
605
606 wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
607 "packet");
608
609 sm->radius_identifier = radius_client_get_id(hapd->radius);
610 msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
611 sm->radius_identifier);
612 if (msg == NULL) {
613 wpa_printf(MSG_INFO, "Could not create new RADIUS packet");
614 return;
615 }
616
617 if (radius_msg_make_authenticator(msg) < 0) {
618 wpa_printf(MSG_INFO, "Could not make Request Authenticator");
619 goto fail;
620 }
621
622 if (sm->identity &&
623 !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
624 sm->identity, sm->identity_len)) {
625 wpa_printf(MSG_INFO, "Could not add User-Name");
626 goto fail;
627 }
628
629 if (add_common_radius_attr(hapd, hapd->conf->radius_auth_req_attr, sta,
630 msg) < 0)
631 goto fail;
632
633 /* TODO: should probably check MTU from driver config; 2304 is max for
634 * IEEE 802.11, but use 1400 to avoid problems with too large packets
635 */
636 if (!hostapd_config_get_radius_attr(hapd->conf->radius_auth_req_attr,
637 RADIUS_ATTR_FRAMED_MTU) &&
638 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
639 wpa_printf(MSG_INFO, "Could not add Framed-MTU");
640 goto fail;
641 }
642
643 if (!radius_msg_add_eap(msg, eap, len)) {
644 wpa_printf(MSG_INFO, "Could not add EAP-Message");
645 goto fail;
646 }
647
648 /* State attribute must be copied if and only if this packet is
649 * Access-Request reply to the previous Access-Challenge */
650 if (sm->last_recv_radius &&
651 radius_msg_get_hdr(sm->last_recv_radius)->code ==
652 RADIUS_CODE_ACCESS_CHALLENGE) {
653 int res = radius_msg_copy_attr(msg, sm->last_recv_radius,
654 RADIUS_ATTR_STATE);
655 if (res < 0) {
656 wpa_printf(MSG_INFO, "Could not copy State attribute from previous Access-Challenge");
657 goto fail;
658 }
659 if (res > 0) {
660 wpa_printf(MSG_DEBUG, "Copied RADIUS State Attribute");
661 }
662 }
663
664 if (hapd->conf->radius_request_cui) {
665 const u8 *cui;
666 size_t cui_len;
667 /* Add previously learned CUI or nul CUI to request CUI */
668 if (sm->radius_cui) {
669 cui = wpabuf_head(sm->radius_cui);
670 cui_len = wpabuf_len(sm->radius_cui);
671 } else {
672 cui = (const u8 *) "\0";
673 cui_len = 1;
674 }
675 if (!radius_msg_add_attr(msg,
676 RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
677 cui, cui_len)) {
678 wpa_printf(MSG_ERROR, "Could not add CUI");
679 goto fail;
680 }
681 }
682
683 #ifdef CONFIG_HS20
684 if (hapd->conf->hs20) {
685 u8 ver = hapd->conf->hs20_release - 1;
686
687 if (!radius_msg_add_wfa(
688 msg, RADIUS_VENDOR_ATTR_WFA_HS20_AP_VERSION,
689 &ver, 1)) {
690 wpa_printf(MSG_ERROR, "Could not add HS 2.0 AP "
691 "version");
692 goto fail;
693 }
694
695 if (sta->hs20_ie && wpabuf_len(sta->hs20_ie) > 0) {
696 const u8 *pos;
697 u8 buf[3];
698 u16 id;
699 pos = wpabuf_head_u8(sta->hs20_ie);
700 buf[0] = (*pos) >> 4;
701 if (((*pos) & HS20_PPS_MO_ID_PRESENT) &&
702 wpabuf_len(sta->hs20_ie) >= 3)
703 id = WPA_GET_LE16(pos + 1);
704 else
705 id = 0;
706 WPA_PUT_BE16(buf + 1, id);
707 if (!radius_msg_add_wfa(
708 msg,
709 RADIUS_VENDOR_ATTR_WFA_HS20_STA_VERSION,
710 buf, sizeof(buf))) {
711 wpa_printf(MSG_ERROR, "Could not add HS 2.0 "
712 "STA version");
713 goto fail;
714 }
715 }
716
717 if (sta->roaming_consortium &&
718 !radius_msg_add_wfa(
719 msg, RADIUS_VENDOR_ATTR_WFA_HS20_ROAMING_CONSORTIUM,
720 wpabuf_head(sta->roaming_consortium),
721 wpabuf_len(sta->roaming_consortium))) {
722 wpa_printf(MSG_ERROR,
723 "Could not add HS 2.0 Roaming Consortium");
724 goto fail;
725 }
726
727 if (hapd->conf->t_c_filename) {
728 be32 timestamp;
729
730 if (!radius_msg_add_wfa(
731 msg,
732 RADIUS_VENDOR_ATTR_WFA_HS20_T_C_FILENAME,
733 (const u8 *) hapd->conf->t_c_filename,
734 os_strlen(hapd->conf->t_c_filename))) {
735 wpa_printf(MSG_ERROR,
736 "Could not add HS 2.0 T&C Filename");
737 goto fail;
738 }
739
740 timestamp = host_to_be32(hapd->conf->t_c_timestamp);
741 if (!radius_msg_add_wfa(
742 msg,
743 RADIUS_VENDOR_ATTR_WFA_HS20_TIMESTAMP,
744 (const u8 *) ×tamp,
745 sizeof(timestamp))) {
746 wpa_printf(MSG_ERROR,
747 "Could not add HS 2.0 Timestamp");
748 goto fail;
749 }
750 }
751 }
752 #endif /* CONFIG_HS20 */
753
754 if (radius_client_send(hapd->radius, msg, RADIUS_AUTH, sta->addr) < 0)
755 goto fail;
756
757 return;
758
759 fail:
760 radius_msg_free(msg);
761 }
762 #endif /* CONFIG_NO_RADIUS */
763
764
handle_eap_response(struct hostapd_data * hapd,struct sta_info * sta,struct eap_hdr * eap,size_t len)765 static void handle_eap_response(struct hostapd_data *hapd,
766 struct sta_info *sta, struct eap_hdr *eap,
767 size_t len)
768 {
769 u8 type, *data;
770 struct eapol_state_machine *sm = sta->eapol_sm;
771 if (sm == NULL)
772 return;
773
774 data = (u8 *) (eap + 1);
775
776 if (len < sizeof(*eap) + 1) {
777 wpa_printf(MSG_INFO, "handle_eap_response: too short response data");
778 return;
779 }
780
781 sm->eap_type_supp = type = data[0];
782
783 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
784 HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
785 "id=%d len=%d) from STA: EAP Response-%s (%d)",
786 eap->code, eap->identifier, be_to_host16(eap->length),
787 eap_server_get_name(0, type), type);
788
789 sm->dot1xAuthEapolRespFramesRx++;
790
791 wpabuf_free(sm->eap_if->eapRespData);
792 sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
793 sm->eapolEap = TRUE;
794 }
795
796
handle_eap_initiate(struct hostapd_data * hapd,struct sta_info * sta,struct eap_hdr * eap,size_t len)797 static void handle_eap_initiate(struct hostapd_data *hapd,
798 struct sta_info *sta, struct eap_hdr *eap,
799 size_t len)
800 {
801 #ifdef CONFIG_ERP
802 u8 type, *data;
803 struct eapol_state_machine *sm = sta->eapol_sm;
804
805 if (sm == NULL)
806 return;
807
808 if (len < sizeof(*eap) + 1) {
809 wpa_printf(MSG_INFO,
810 "handle_eap_initiate: too short response data");
811 return;
812 }
813
814 data = (u8 *) (eap + 1);
815 type = data[0];
816
817 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
818 HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
819 "id=%d len=%d) from STA: EAP Initiate type %u",
820 eap->code, eap->identifier, be_to_host16(eap->length),
821 type);
822
823 wpabuf_free(sm->eap_if->eapRespData);
824 sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
825 sm->eapolEap = TRUE;
826 #endif /* CONFIG_ERP */
827 }
828
829
830 /* Process incoming EAP packet from Supplicant */
handle_eap(struct hostapd_data * hapd,struct sta_info * sta,u8 * buf,size_t len)831 static void handle_eap(struct hostapd_data *hapd, struct sta_info *sta,
832 u8 *buf, size_t len)
833 {
834 struct eap_hdr *eap;
835 u16 eap_len;
836
837 if (len < sizeof(*eap)) {
838 wpa_printf(MSG_INFO, " too short EAP packet");
839 return;
840 }
841
842 eap = (struct eap_hdr *) buf;
843
844 eap_len = be_to_host16(eap->length);
845 wpa_printf(MSG_DEBUG, "EAP: code=%d identifier=%d length=%d",
846 eap->code, eap->identifier, eap_len);
847 if (eap_len < sizeof(*eap)) {
848 wpa_printf(MSG_DEBUG, " Invalid EAP length");
849 return;
850 } else if (eap_len > len) {
851 wpa_printf(MSG_DEBUG, " Too short frame to contain this EAP "
852 "packet");
853 return;
854 } else if (eap_len < len) {
855 wpa_printf(MSG_DEBUG, " Ignoring %lu extra bytes after EAP "
856 "packet", (unsigned long) len - eap_len);
857 }
858
859 switch (eap->code) {
860 case EAP_CODE_REQUEST:
861 wpa_printf(MSG_DEBUG, " (request)");
862 return;
863 case EAP_CODE_RESPONSE:
864 wpa_printf(MSG_DEBUG, " (response)");
865 handle_eap_response(hapd, sta, eap, eap_len);
866 break;
867 case EAP_CODE_SUCCESS:
868 wpa_printf(MSG_DEBUG, " (success)");
869 return;
870 case EAP_CODE_FAILURE:
871 wpa_printf(MSG_DEBUG, " (failure)");
872 return;
873 case EAP_CODE_INITIATE:
874 wpa_printf(MSG_DEBUG, " (initiate)");
875 handle_eap_initiate(hapd, sta, eap, eap_len);
876 break;
877 case EAP_CODE_FINISH:
878 wpa_printf(MSG_DEBUG, " (finish)");
879 break;
880 default:
881 wpa_printf(MSG_DEBUG, " (unknown code)");
882 return;
883 }
884 }
885
886
887 struct eapol_state_machine *
ieee802_1x_alloc_eapol_sm(struct hostapd_data * hapd,struct sta_info * sta)888 ieee802_1x_alloc_eapol_sm(struct hostapd_data *hapd, struct sta_info *sta)
889 {
890 int flags = 0;
891 if (sta->flags & WLAN_STA_PREAUTH)
892 flags |= EAPOL_SM_PREAUTH;
893 if (sta->wpa_sm) {
894 flags |= EAPOL_SM_USES_WPA;
895 if (wpa_auth_sta_get_pmksa(sta->wpa_sm))
896 flags |= EAPOL_SM_FROM_PMKSA_CACHE;
897 }
898 return eapol_auth_alloc(hapd->eapol_auth, sta->addr, flags,
899 sta->wps_ie, sta->p2p_ie, sta,
900 sta->identity, sta->radius_cui);
901 }
902
903
ieee802_1x_save_eapol(struct sta_info * sta,const u8 * buf,size_t len)904 static void ieee802_1x_save_eapol(struct sta_info *sta, const u8 *buf,
905 size_t len)
906 {
907 if (sta->pending_eapol_rx) {
908 wpabuf_free(sta->pending_eapol_rx->buf);
909 } else {
910 sta->pending_eapol_rx =
911 os_malloc(sizeof(*sta->pending_eapol_rx));
912 if (!sta->pending_eapol_rx)
913 return;
914 }
915
916 sta->pending_eapol_rx->buf = wpabuf_alloc_copy(buf, len);
917 if (!sta->pending_eapol_rx->buf) {
918 os_free(sta->pending_eapol_rx);
919 sta->pending_eapol_rx = NULL;
920 return;
921 }
922
923 os_get_reltime(&sta->pending_eapol_rx->rx_time);
924 }
925
926
927 /**
928 * ieee802_1x_receive - Process the EAPOL frames from the Supplicant
929 * @hapd: hostapd BSS data
930 * @sa: Source address (sender of the EAPOL frame)
931 * @buf: EAPOL frame
932 * @len: Length of buf in octets
933 *
934 * This function is called for each incoming EAPOL frame from the interface
935 */
ieee802_1x_receive(struct hostapd_data * hapd,const u8 * sa,const u8 * buf,size_t len)936 void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf,
937 size_t len)
938 {
939 struct sta_info *sta;
940 struct ieee802_1x_hdr *hdr;
941 struct ieee802_1x_eapol_key *key;
942 u16 datalen;
943 struct rsn_pmksa_cache_entry *pmksa;
944 int key_mgmt;
945
946 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen &&
947 !hapd->conf->wps_state)
948 return;
949
950 wpa_printf(MSG_DEBUG, "IEEE 802.1X: %lu bytes from " MACSTR,
951 (unsigned long) len, MAC2STR(sa));
952 sta = ap_get_sta(hapd, sa);
953 if (!sta || (!(sta->flags & (WLAN_STA_ASSOC | WLAN_STA_PREAUTH)) &&
954 !(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED))) {
955 wpa_printf(MSG_DEBUG, "IEEE 802.1X data frame from not "
956 "associated/Pre-authenticating STA");
957
958 if (sta && (sta->flags & WLAN_STA_AUTH)) {
959 wpa_printf(MSG_DEBUG, "Saving EAPOL frame from " MACSTR
960 " for later use", MAC2STR(sta->addr));
961 ieee802_1x_save_eapol(sta, buf, len);
962 }
963
964 return;
965 }
966
967 if (len < sizeof(*hdr)) {
968 wpa_printf(MSG_INFO, " too short IEEE 802.1X packet");
969 return;
970 }
971
972 hdr = (struct ieee802_1x_hdr *) buf;
973 datalen = be_to_host16(hdr->length);
974 wpa_printf(MSG_DEBUG, " IEEE 802.1X: version=%d type=%d length=%d",
975 hdr->version, hdr->type, datalen);
976
977 if (len - sizeof(*hdr) < datalen) {
978 wpa_printf(MSG_INFO, " frame too short for this IEEE 802.1X packet");
979 if (sta->eapol_sm)
980 sta->eapol_sm->dot1xAuthEapLengthErrorFramesRx++;
981 return;
982 }
983 if (len - sizeof(*hdr) > datalen) {
984 wpa_printf(MSG_DEBUG, " ignoring %lu extra octets after "
985 "IEEE 802.1X packet",
986 (unsigned long) len - sizeof(*hdr) - datalen);
987 }
988
989 if (sta->eapol_sm) {
990 sta->eapol_sm->dot1xAuthLastEapolFrameVersion = hdr->version;
991 sta->eapol_sm->dot1xAuthEapolFramesRx++;
992 }
993
994 key = (struct ieee802_1x_eapol_key *) (hdr + 1);
995 if (datalen >= sizeof(struct ieee802_1x_eapol_key) &&
996 hdr->type == IEEE802_1X_TYPE_EAPOL_KEY &&
997 (key->type == EAPOL_KEY_TYPE_WPA ||
998 key->type == EAPOL_KEY_TYPE_RSN)) {
999 wpa_receive(hapd->wpa_auth, sta->wpa_sm, (u8 *) hdr,
1000 sizeof(*hdr) + datalen);
1001 return;
1002 }
1003
1004 if (!hapd->conf->ieee802_1x && !hapd->conf->osen &&
1005 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
1006 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
1007 "802.1X not enabled and WPS not used");
1008 return;
1009 }
1010
1011 key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
1012 if (key_mgmt != -1 &&
1013 (wpa_key_mgmt_wpa_psk(key_mgmt) || key_mgmt == WPA_KEY_MGMT_OWE ||
1014 key_mgmt == WPA_KEY_MGMT_DPP)) {
1015 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
1016 "STA is using PSK");
1017 return;
1018 }
1019
1020 if (!sta->eapol_sm) {
1021 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
1022 if (!sta->eapol_sm)
1023 return;
1024
1025 #ifdef CONFIG_WPS
1026 if (!hapd->conf->ieee802_1x && hapd->conf->wps_state) {
1027 u32 wflags = sta->flags & (WLAN_STA_WPS |
1028 WLAN_STA_WPS2 |
1029 WLAN_STA_MAYBE_WPS);
1030 if (wflags == WLAN_STA_MAYBE_WPS ||
1031 wflags == (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) {
1032 /*
1033 * Delay EAPOL frame transmission until a
1034 * possible WPS STA initiates the handshake
1035 * with EAPOL-Start. Only allow the wait to be
1036 * skipped if the STA is known to support WPS
1037 * 2.0.
1038 */
1039 wpa_printf(MSG_DEBUG, "WPS: Do not start "
1040 "EAPOL until EAPOL-Start is "
1041 "received");
1042 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
1043 }
1044 }
1045 #endif /* CONFIG_WPS */
1046
1047 sta->eapol_sm->eap_if->portEnabled = TRUE;
1048 }
1049
1050 /* since we support version 1, we can ignore version field and proceed
1051 * as specified in version 1 standard [IEEE Std 802.1X-2001, 7.5.5] */
1052 /* TODO: actually, we are not version 1 anymore.. However, Version 2
1053 * does not change frame contents, so should be ok to process frames
1054 * more or less identically. Some changes might be needed for
1055 * verification of fields. */
1056
1057 switch (hdr->type) {
1058 case IEEE802_1X_TYPE_EAP_PACKET:
1059 handle_eap(hapd, sta, (u8 *) (hdr + 1), datalen);
1060 break;
1061
1062 case IEEE802_1X_TYPE_EAPOL_START:
1063 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1064 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Start "
1065 "from STA");
1066 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
1067 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
1068 if (pmksa) {
1069 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
1070 HOSTAPD_LEVEL_DEBUG, "cached PMKSA "
1071 "available - ignore it since "
1072 "STA sent EAPOL-Start");
1073 wpa_auth_sta_clear_pmksa(sta->wpa_sm, pmksa);
1074 }
1075 sta->eapol_sm->eapolStart = TRUE;
1076 sta->eapol_sm->dot1xAuthEapolStartFramesRx++;
1077 eap_server_clear_identity(sta->eapol_sm->eap);
1078 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
1079 break;
1080
1081 case IEEE802_1X_TYPE_EAPOL_LOGOFF:
1082 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1083 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Logoff "
1084 "from STA");
1085 sta->acct_terminate_cause =
1086 RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1087 accounting_sta_stop(hapd, sta);
1088 sta->eapol_sm->eapolLogoff = TRUE;
1089 sta->eapol_sm->dot1xAuthEapolLogoffFramesRx++;
1090 eap_server_clear_identity(sta->eapol_sm->eap);
1091 break;
1092
1093 case IEEE802_1X_TYPE_EAPOL_KEY:
1094 wpa_printf(MSG_DEBUG, " EAPOL-Key");
1095 if (!ap_sta_is_authorized(sta)) {
1096 wpa_printf(MSG_DEBUG, " Dropped key data from "
1097 "unauthorized Supplicant");
1098 break;
1099 }
1100 break;
1101
1102 case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT:
1103 wpa_printf(MSG_DEBUG, " EAPOL-Encapsulated-ASF-Alert");
1104 /* TODO: implement support for this; show data */
1105 break;
1106
1107 default:
1108 wpa_printf(MSG_DEBUG, " unknown IEEE 802.1X packet type");
1109 sta->eapol_sm->dot1xAuthInvalidEapolFramesRx++;
1110 break;
1111 }
1112
1113 eapol_auth_step(sta->eapol_sm);
1114 }
1115
1116
1117 /**
1118 * ieee802_1x_new_station - Start IEEE 802.1X authentication
1119 * @hapd: hostapd BSS data
1120 * @sta: The station
1121 *
1122 * This function is called to start IEEE 802.1X authentication when a new
1123 * station completes IEEE 802.11 association.
1124 */
ieee802_1x_new_station(struct hostapd_data * hapd,struct sta_info * sta)1125 void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta)
1126 {
1127 struct rsn_pmksa_cache_entry *pmksa;
1128 int reassoc = 1;
1129 int force_1x = 0;
1130 int key_mgmt;
1131
1132 #ifdef CONFIG_WPS
1133 if (hapd->conf->wps_state &&
1134 ((hapd->conf->wpa && (sta->flags & WLAN_STA_MAYBE_WPS)) ||
1135 (sta->flags & WLAN_STA_WPS))) {
1136 /*
1137 * Need to enable IEEE 802.1X/EAPOL state machines for possible
1138 * WPS handshake even if IEEE 802.1X/EAPOL is not used for
1139 * authentication in this BSS.
1140 */
1141 force_1x = 1;
1142 }
1143 #endif /* CONFIG_WPS */
1144
1145 if (!force_1x && !hapd->conf->ieee802_1x && !hapd->conf->osen) {
1146 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - "
1147 "802.1X not enabled or forced for WPS");
1148 /*
1149 * Clear any possible EAPOL authenticator state to support
1150 * reassociation change from WPS to PSK.
1151 */
1152 ieee802_1x_free_station(hapd, sta);
1153 return;
1154 }
1155
1156 key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
1157 if (key_mgmt != -1 &&
1158 (wpa_key_mgmt_wpa_psk(key_mgmt) || key_mgmt == WPA_KEY_MGMT_OWE ||
1159 key_mgmt == WPA_KEY_MGMT_DPP)) {
1160 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - using PSK");
1161 /*
1162 * Clear any possible EAPOL authenticator state to support
1163 * reassociation change from WPA-EAP to PSK.
1164 */
1165 ieee802_1x_free_station(hapd, sta);
1166 return;
1167 }
1168
1169 if (sta->eapol_sm == NULL) {
1170 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1171 HOSTAPD_LEVEL_DEBUG, "start authentication");
1172 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
1173 if (sta->eapol_sm == NULL) {
1174 hostapd_logger(hapd, sta->addr,
1175 HOSTAPD_MODULE_IEEE8021X,
1176 HOSTAPD_LEVEL_INFO,
1177 "failed to allocate state machine");
1178 return;
1179 }
1180 reassoc = 0;
1181 }
1182
1183 #ifdef CONFIG_WPS
1184 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
1185 if (!hapd->conf->ieee802_1x && hapd->conf->wps_state &&
1186 !(sta->flags & WLAN_STA_WPS2)) {
1187 /*
1188 * Delay EAPOL frame transmission until a possible WPS STA
1189 * initiates the handshake with EAPOL-Start. Only allow the
1190 * wait to be skipped if the STA is known to support WPS 2.0.
1191 */
1192 wpa_printf(MSG_DEBUG, "WPS: Do not start EAPOL until "
1193 "EAPOL-Start is received");
1194 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
1195 }
1196 #endif /* CONFIG_WPS */
1197
1198 sta->eapol_sm->eap_if->portEnabled = TRUE;
1199
1200 #ifdef CONFIG_IEEE80211R_AP
1201 if (sta->auth_alg == WLAN_AUTH_FT) {
1202 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1203 HOSTAPD_LEVEL_DEBUG,
1204 "PMK from FT - skip IEEE 802.1X/EAP");
1205 /* Setup EAPOL state machines to already authenticated state
1206 * because of existing FT information from R0KH. */
1207 sta->eapol_sm->keyRun = TRUE;
1208 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1209 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1210 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1211 sta->eapol_sm->authSuccess = TRUE;
1212 sta->eapol_sm->authFail = FALSE;
1213 sta->eapol_sm->portValid = TRUE;
1214 if (sta->eapol_sm->eap)
1215 eap_sm_notify_cached(sta->eapol_sm->eap);
1216 ap_sta_bind_vlan(hapd, sta);
1217 return;
1218 }
1219 #endif /* CONFIG_IEEE80211R_AP */
1220
1221 #ifdef CONFIG_FILS
1222 if (sta->auth_alg == WLAN_AUTH_FILS_SK ||
1223 sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
1224 sta->auth_alg == WLAN_AUTH_FILS_PK) {
1225 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1226 HOSTAPD_LEVEL_DEBUG,
1227 "PMK from FILS - skip IEEE 802.1X/EAP");
1228 /* Setup EAPOL state machines to already authenticated state
1229 * because of existing FILS information. */
1230 sta->eapol_sm->keyRun = TRUE;
1231 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1232 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1233 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1234 sta->eapol_sm->authSuccess = TRUE;
1235 sta->eapol_sm->authFail = FALSE;
1236 sta->eapol_sm->portValid = TRUE;
1237 if (sta->eapol_sm->eap)
1238 eap_sm_notify_cached(sta->eapol_sm->eap);
1239 return;
1240 }
1241 #endif /* CONFIG_FILS */
1242
1243 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
1244 if (pmksa) {
1245 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1246 HOSTAPD_LEVEL_DEBUG,
1247 "PMK from PMKSA cache - skip IEEE 802.1X/EAP");
1248 /* Setup EAPOL state machines to already authenticated state
1249 * because of existing PMKSA information in the cache. */
1250 sta->eapol_sm->keyRun = TRUE;
1251 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1252 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1253 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1254 sta->eapol_sm->authSuccess = TRUE;
1255 sta->eapol_sm->authFail = FALSE;
1256 if (sta->eapol_sm->eap)
1257 eap_sm_notify_cached(sta->eapol_sm->eap);
1258 pmksa_cache_to_eapol_data(hapd, pmksa, sta->eapol_sm);
1259 ap_sta_bind_vlan(hapd, sta);
1260 } else {
1261 if (reassoc) {
1262 /*
1263 * Force EAPOL state machines to start
1264 * re-authentication without having to wait for the
1265 * Supplicant to send EAPOL-Start.
1266 */
1267 sta->eapol_sm->reAuthenticate = TRUE;
1268 }
1269 eapol_auth_step(sta->eapol_sm);
1270 }
1271 }
1272
1273
ieee802_1x_free_station(struct hostapd_data * hapd,struct sta_info * sta)1274 void ieee802_1x_free_station(struct hostapd_data *hapd, struct sta_info *sta)
1275 {
1276 struct eapol_state_machine *sm = sta->eapol_sm;
1277
1278 #ifdef CONFIG_HS20
1279 eloop_cancel_timeout(ieee802_1x_wnm_notif_send, hapd, sta);
1280 #endif /* CONFIG_HS20 */
1281
1282 if (sta->pending_eapol_rx) {
1283 wpabuf_free(sta->pending_eapol_rx->buf);
1284 os_free(sta->pending_eapol_rx);
1285 sta->pending_eapol_rx = NULL;
1286 }
1287
1288 if (sm == NULL)
1289 return;
1290
1291 sta->eapol_sm = NULL;
1292
1293 #ifndef CONFIG_NO_RADIUS
1294 radius_msg_free(sm->last_recv_radius);
1295 radius_free_class(&sm->radius_class);
1296 #endif /* CONFIG_NO_RADIUS */
1297
1298 eapol_auth_free(sm);
1299 }
1300
1301
1302 #ifndef CONFIG_NO_RADIUS
ieee802_1x_decapsulate_radius(struct hostapd_data * hapd,struct sta_info * sta)1303 static void ieee802_1x_decapsulate_radius(struct hostapd_data *hapd,
1304 struct sta_info *sta)
1305 {
1306 struct wpabuf *eap;
1307 const struct eap_hdr *hdr;
1308 int eap_type = -1;
1309 char buf[64];
1310 struct radius_msg *msg;
1311 struct eapol_state_machine *sm = sta->eapol_sm;
1312
1313 if (sm == NULL || sm->last_recv_radius == NULL) {
1314 if (sm)
1315 sm->eap_if->aaaEapNoReq = TRUE;
1316 return;
1317 }
1318
1319 msg = sm->last_recv_radius;
1320
1321 eap = radius_msg_get_eap(msg);
1322 if (eap == NULL) {
1323 /* RFC 3579, Chap. 2.6.3:
1324 * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
1325 * attribute */
1326 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1327 HOSTAPD_LEVEL_WARNING, "could not extract "
1328 "EAP-Message from RADIUS message");
1329 sm->eap_if->aaaEapNoReq = TRUE;
1330 return;
1331 }
1332
1333 if (wpabuf_len(eap) < sizeof(*hdr)) {
1334 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1335 HOSTAPD_LEVEL_WARNING, "too short EAP packet "
1336 "received from authentication server");
1337 wpabuf_free(eap);
1338 sm->eap_if->aaaEapNoReq = TRUE;
1339 return;
1340 }
1341
1342 if (wpabuf_len(eap) > sizeof(*hdr))
1343 eap_type = (wpabuf_head_u8(eap))[sizeof(*hdr)];
1344
1345 hdr = wpabuf_head(eap);
1346 switch (hdr->code) {
1347 case EAP_CODE_REQUEST:
1348 if (eap_type >= 0)
1349 sm->eap_type_authsrv = eap_type;
1350 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
1351 eap_server_get_name(0, eap_type), eap_type);
1352 break;
1353 case EAP_CODE_RESPONSE:
1354 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
1355 eap_server_get_name(0, eap_type), eap_type);
1356 break;
1357 case EAP_CODE_SUCCESS:
1358 os_strlcpy(buf, "EAP Success", sizeof(buf));
1359 break;
1360 case EAP_CODE_FAILURE:
1361 os_strlcpy(buf, "EAP Failure", sizeof(buf));
1362 break;
1363 default:
1364 os_strlcpy(buf, "unknown EAP code", sizeof(buf));
1365 break;
1366 }
1367 buf[sizeof(buf) - 1] = '\0';
1368 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1369 HOSTAPD_LEVEL_DEBUG, "decapsulated EAP packet (code=%d "
1370 "id=%d len=%d) from RADIUS server: %s",
1371 hdr->code, hdr->identifier, be_to_host16(hdr->length),
1372 buf);
1373 sm->eap_if->aaaEapReq = TRUE;
1374
1375 wpabuf_free(sm->eap_if->aaaEapReqData);
1376 sm->eap_if->aaaEapReqData = eap;
1377 }
1378
1379
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)1380 static void ieee802_1x_get_keys(struct hostapd_data *hapd,
1381 struct sta_info *sta, struct radius_msg *msg,
1382 struct radius_msg *req,
1383 const u8 *shared_secret,
1384 size_t shared_secret_len)
1385 {
1386 struct radius_ms_mppe_keys *keys;
1387 struct eapol_state_machine *sm = sta->eapol_sm;
1388 if (sm == NULL)
1389 return;
1390
1391 keys = radius_msg_get_ms_keys(msg, req, shared_secret,
1392 shared_secret_len);
1393
1394 if (keys && keys->send && keys->recv) {
1395 size_t len = keys->send_len + keys->recv_len;
1396 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Send-Key",
1397 keys->send, keys->send_len);
1398 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Recv-Key",
1399 keys->recv, keys->recv_len);
1400
1401 os_free(sm->eap_if->aaaEapKeyData);
1402 sm->eap_if->aaaEapKeyData = os_malloc(len);
1403 if (sm->eap_if->aaaEapKeyData) {
1404 os_memcpy(sm->eap_if->aaaEapKeyData, keys->recv,
1405 keys->recv_len);
1406 os_memcpy(sm->eap_if->aaaEapKeyData + keys->recv_len,
1407 keys->send, keys->send_len);
1408 sm->eap_if->aaaEapKeyDataLen = len;
1409 sm->eap_if->aaaEapKeyAvailable = TRUE;
1410 }
1411 } else {
1412 wpa_printf(MSG_DEBUG,
1413 "MS-MPPE: 1x_get_keys, could not get keys: %p send: %p recv: %p",
1414 keys, keys ? keys->send : NULL,
1415 keys ? keys->recv : NULL);
1416 }
1417
1418 if (keys) {
1419 os_free(keys->send);
1420 os_free(keys->recv);
1421 os_free(keys);
1422 }
1423 }
1424
1425
ieee802_1x_store_radius_class(struct hostapd_data * hapd,struct sta_info * sta,struct radius_msg * msg)1426 static void ieee802_1x_store_radius_class(struct hostapd_data *hapd,
1427 struct sta_info *sta,
1428 struct radius_msg *msg)
1429 {
1430 u8 *attr_class;
1431 size_t class_len;
1432 struct eapol_state_machine *sm = sta->eapol_sm;
1433 int count, i;
1434 struct radius_attr_data *nclass;
1435 size_t nclass_count;
1436
1437 if (!hapd->conf->radius->acct_server || hapd->radius == NULL ||
1438 sm == NULL)
1439 return;
1440
1441 radius_free_class(&sm->radius_class);
1442 count = radius_msg_count_attr(msg, RADIUS_ATTR_CLASS, 1);
1443 if (count <= 0)
1444 return;
1445
1446 nclass = os_calloc(count, sizeof(struct radius_attr_data));
1447 if (nclass == NULL)
1448 return;
1449
1450 nclass_count = 0;
1451
1452 attr_class = NULL;
1453 for (i = 0; i < count; i++) {
1454 do {
1455 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CLASS,
1456 &attr_class, &class_len,
1457 attr_class) < 0) {
1458 i = count;
1459 break;
1460 }
1461 } while (class_len < 1);
1462
1463 nclass[nclass_count].data = os_memdup(attr_class, class_len);
1464 if (nclass[nclass_count].data == NULL)
1465 break;
1466
1467 nclass[nclass_count].len = class_len;
1468 nclass_count++;
1469 }
1470
1471 sm->radius_class.attr = nclass;
1472 sm->radius_class.count = nclass_count;
1473 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Stored %lu RADIUS Class "
1474 "attributes for " MACSTR,
1475 (unsigned long) sm->radius_class.count,
1476 MAC2STR(sta->addr));
1477 }
1478
1479
1480 /* 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)1481 static void ieee802_1x_update_sta_identity(struct hostapd_data *hapd,
1482 struct sta_info *sta,
1483 struct radius_msg *msg)
1484 {
1485 u8 *buf, *identity;
1486 size_t len;
1487 struct eapol_state_machine *sm = sta->eapol_sm;
1488
1489 if (sm == NULL)
1490 return;
1491
1492 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &buf, &len,
1493 NULL) < 0)
1494 return;
1495
1496 identity = (u8 *) dup_binstr(buf, len);
1497 if (identity == NULL)
1498 return;
1499
1500 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1501 HOSTAPD_LEVEL_DEBUG, "old identity '%s' updated with "
1502 "User-Name from Access-Accept '%s'",
1503 sm->identity ? (char *) sm->identity : "N/A",
1504 (char *) identity);
1505
1506 os_free(sm->identity);
1507 sm->identity = identity;
1508 sm->identity_len = len;
1509 }
1510
1511
1512 /* 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)1513 static void ieee802_1x_update_sta_cui(struct hostapd_data *hapd,
1514 struct sta_info *sta,
1515 struct radius_msg *msg)
1516 {
1517 struct eapol_state_machine *sm = sta->eapol_sm;
1518 struct wpabuf *cui;
1519 u8 *buf;
1520 size_t len;
1521
1522 if (sm == NULL)
1523 return;
1524
1525 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
1526 &buf, &len, NULL) < 0)
1527 return;
1528
1529 cui = wpabuf_alloc_copy(buf, len);
1530 if (cui == NULL)
1531 return;
1532
1533 wpabuf_free(sm->radius_cui);
1534 sm->radius_cui = cui;
1535 }
1536
1537
1538 #ifdef CONFIG_HS20
1539
ieee802_1x_hs20_sub_rem(struct sta_info * sta,u8 * pos,size_t len)1540 static void ieee802_1x_hs20_sub_rem(struct sta_info *sta, u8 *pos, size_t len)
1541 {
1542 sta->remediation = 1;
1543 os_free(sta->remediation_url);
1544 if (len > 2) {
1545 sta->remediation_url = os_malloc(len);
1546 if (!sta->remediation_url)
1547 return;
1548 sta->remediation_method = pos[0];
1549 os_memcpy(sta->remediation_url, pos + 1, len - 1);
1550 sta->remediation_url[len - 1] = '\0';
1551 wpa_printf(MSG_DEBUG, "HS 2.0: Subscription remediation needed "
1552 "for " MACSTR " - server method %u URL %s",
1553 MAC2STR(sta->addr), sta->remediation_method,
1554 sta->remediation_url);
1555 } else {
1556 sta->remediation_url = NULL;
1557 wpa_printf(MSG_DEBUG, "HS 2.0: Subscription remediation needed "
1558 "for " MACSTR, MAC2STR(sta->addr));
1559 }
1560 /* TODO: assign the STA into remediation VLAN or add filtering */
1561 }
1562
1563
ieee802_1x_hs20_deauth_req(struct hostapd_data * hapd,struct sta_info * sta,u8 * pos,size_t len)1564 static void ieee802_1x_hs20_deauth_req(struct hostapd_data *hapd,
1565 struct sta_info *sta, u8 *pos,
1566 size_t len)
1567 {
1568 if (len < 3)
1569 return; /* Malformed information */
1570 sta->hs20_deauth_requested = 1;
1571 wpa_printf(MSG_DEBUG, "HS 2.0: Deauthentication request - Code %u "
1572 "Re-auth Delay %u",
1573 *pos, WPA_GET_LE16(pos + 1));
1574 wpabuf_free(sta->hs20_deauth_req);
1575 sta->hs20_deauth_req = wpabuf_alloc(len + 1);
1576 if (sta->hs20_deauth_req) {
1577 wpabuf_put_data(sta->hs20_deauth_req, pos, 3);
1578 wpabuf_put_u8(sta->hs20_deauth_req, len - 3);
1579 wpabuf_put_data(sta->hs20_deauth_req, pos + 3, len - 3);
1580 }
1581 ap_sta_session_timeout(hapd, sta, hapd->conf->hs20_deauth_req_timeout);
1582 }
1583
1584
ieee802_1x_hs20_session_info(struct hostapd_data * hapd,struct sta_info * sta,u8 * pos,size_t len,int session_timeout)1585 static void ieee802_1x_hs20_session_info(struct hostapd_data *hapd,
1586 struct sta_info *sta, u8 *pos,
1587 size_t len, int session_timeout)
1588 {
1589 unsigned int swt;
1590 int warning_time, beacon_int;
1591
1592 if (len < 1)
1593 return; /* Malformed information */
1594 os_free(sta->hs20_session_info_url);
1595 sta->hs20_session_info_url = os_malloc(len);
1596 if (sta->hs20_session_info_url == NULL)
1597 return;
1598 swt = pos[0];
1599 os_memcpy(sta->hs20_session_info_url, pos + 1, len - 1);
1600 sta->hs20_session_info_url[len - 1] = '\0';
1601 wpa_printf(MSG_DEBUG, "HS 2.0: Session Information URL='%s' SWT=%u "
1602 "(session_timeout=%d)",
1603 sta->hs20_session_info_url, swt, session_timeout);
1604 if (session_timeout < 0) {
1605 wpa_printf(MSG_DEBUG, "HS 2.0: No Session-Timeout set - ignore session info URL");
1606 return;
1607 }
1608 if (swt == 255)
1609 swt = 1; /* Use one minute as the AP selected value */
1610
1611 if ((unsigned int) session_timeout < swt * 60)
1612 warning_time = 0;
1613 else
1614 warning_time = session_timeout - swt * 60;
1615
1616 beacon_int = hapd->iconf->beacon_int;
1617 if (beacon_int < 1)
1618 beacon_int = 100; /* best guess */
1619 sta->hs20_disassoc_timer = swt * 60 * 1000 / beacon_int * 125 / 128;
1620 if (sta->hs20_disassoc_timer > 65535)
1621 sta->hs20_disassoc_timer = 65535;
1622
1623 ap_sta_session_warning_timeout(hapd, sta, warning_time);
1624 }
1625
1626
ieee802_1x_hs20_t_c_filtering(struct hostapd_data * hapd,struct sta_info * sta,u8 * pos,size_t len)1627 static void ieee802_1x_hs20_t_c_filtering(struct hostapd_data *hapd,
1628 struct sta_info *sta, u8 *pos,
1629 size_t len)
1630 {
1631 if (len < 4)
1632 return; /* Malformed information */
1633 wpa_printf(MSG_DEBUG,
1634 "HS 2.0: Terms and Conditions filtering %02x %02x %02x %02x",
1635 pos[0], pos[1], pos[2], pos[3]);
1636 hs20_t_c_filtering(hapd, sta, pos[0] & BIT(0));
1637 }
1638
1639
ieee802_1x_hs20_t_c_url(struct hostapd_data * hapd,struct sta_info * sta,u8 * pos,size_t len)1640 static void ieee802_1x_hs20_t_c_url(struct hostapd_data *hapd,
1641 struct sta_info *sta, u8 *pos, size_t len)
1642 {
1643 os_free(sta->t_c_url);
1644 sta->t_c_url = os_malloc(len + 1);
1645 if (!sta->t_c_url)
1646 return;
1647 os_memcpy(sta->t_c_url, pos, len);
1648 sta->t_c_url[len] = '\0';
1649 wpa_printf(MSG_DEBUG,
1650 "HS 2.0: Terms and Conditions URL %s", sta->t_c_url);
1651 }
1652
1653 #endif /* CONFIG_HS20 */
1654
1655
ieee802_1x_check_hs20(struct hostapd_data * hapd,struct sta_info * sta,struct radius_msg * msg,int session_timeout)1656 static void ieee802_1x_check_hs20(struct hostapd_data *hapd,
1657 struct sta_info *sta,
1658 struct radius_msg *msg,
1659 int session_timeout)
1660 {
1661 #ifdef CONFIG_HS20
1662 u8 *buf, *pos, *end, type, sublen;
1663 size_t len;
1664
1665 buf = NULL;
1666 sta->remediation = 0;
1667 sta->hs20_deauth_requested = 0;
1668
1669 for (;;) {
1670 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_VENDOR_SPECIFIC,
1671 &buf, &len, buf) < 0)
1672 break;
1673 if (len < 6)
1674 continue;
1675 pos = buf;
1676 end = buf + len;
1677 if (WPA_GET_BE32(pos) != RADIUS_VENDOR_ID_WFA)
1678 continue;
1679 pos += 4;
1680
1681 type = *pos++;
1682 sublen = *pos++;
1683 if (sublen < 2)
1684 continue; /* invalid length */
1685 sublen -= 2; /* skip header */
1686 if (pos + sublen > end)
1687 continue; /* invalid WFA VSA */
1688
1689 switch (type) {
1690 case RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION:
1691 ieee802_1x_hs20_sub_rem(sta, pos, sublen);
1692 break;
1693 case RADIUS_VENDOR_ATTR_WFA_HS20_DEAUTH_REQ:
1694 ieee802_1x_hs20_deauth_req(hapd, sta, pos, sublen);
1695 break;
1696 case RADIUS_VENDOR_ATTR_WFA_HS20_SESSION_INFO_URL:
1697 ieee802_1x_hs20_session_info(hapd, sta, pos, sublen,
1698 session_timeout);
1699 break;
1700 case RADIUS_VENDOR_ATTR_WFA_HS20_T_C_FILTERING:
1701 ieee802_1x_hs20_t_c_filtering(hapd, sta, pos, sublen);
1702 break;
1703 case RADIUS_VENDOR_ATTR_WFA_HS20_T_C_URL:
1704 ieee802_1x_hs20_t_c_url(hapd, sta, pos, sublen);
1705 break;
1706 }
1707 }
1708 #endif /* CONFIG_HS20 */
1709 }
1710
1711
1712 struct sta_id_search {
1713 u8 identifier;
1714 struct eapol_state_machine *sm;
1715 };
1716
1717
ieee802_1x_select_radius_identifier(struct hostapd_data * hapd,struct sta_info * sta,void * ctx)1718 static int ieee802_1x_select_radius_identifier(struct hostapd_data *hapd,
1719 struct sta_info *sta,
1720 void *ctx)
1721 {
1722 struct sta_id_search *id_search = ctx;
1723 struct eapol_state_machine *sm = sta->eapol_sm;
1724
1725 if (sm && sm->radius_identifier >= 0 &&
1726 sm->radius_identifier == id_search->identifier) {
1727 id_search->sm = sm;
1728 return 1;
1729 }
1730 return 0;
1731 }
1732
1733
1734 static struct eapol_state_machine *
ieee802_1x_search_radius_identifier(struct hostapd_data * hapd,u8 identifier)1735 ieee802_1x_search_radius_identifier(struct hostapd_data *hapd, u8 identifier)
1736 {
1737 struct sta_id_search id_search;
1738 id_search.identifier = identifier;
1739 id_search.sm = NULL;
1740 ap_for_each_sta(hapd, ieee802_1x_select_radius_identifier, &id_search);
1741 return id_search.sm;
1742 }
1743
1744
1745 #ifndef CONFIG_NO_VLAN
ieee802_1x_update_vlan(struct radius_msg * msg,struct hostapd_data * hapd,struct sta_info * sta)1746 static int ieee802_1x_update_vlan(struct radius_msg *msg,
1747 struct hostapd_data *hapd,
1748 struct sta_info *sta)
1749 {
1750 struct vlan_description vlan_desc;
1751
1752 os_memset(&vlan_desc, 0, sizeof(vlan_desc));
1753 vlan_desc.notempty = !!radius_msg_get_vlanid(msg, &vlan_desc.untagged,
1754 MAX_NUM_TAGGED_VLAN,
1755 vlan_desc.tagged);
1756
1757 if (vlan_desc.notempty &&
1758 !hostapd_vlan_valid(hapd->conf->vlan, &vlan_desc)) {
1759 sta->eapol_sm->authFail = TRUE;
1760 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
1761 HOSTAPD_LEVEL_INFO,
1762 "Invalid VLAN %d%s received from RADIUS server",
1763 vlan_desc.untagged,
1764 vlan_desc.tagged[0] ? "+" : "");
1765 os_memset(&vlan_desc, 0, sizeof(vlan_desc));
1766 ap_sta_set_vlan(hapd, sta, &vlan_desc);
1767 return -1;
1768 }
1769
1770 if (hapd->conf->ssid.dynamic_vlan == DYNAMIC_VLAN_REQUIRED &&
1771 !vlan_desc.notempty) {
1772 sta->eapol_sm->authFail = TRUE;
1773 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1774 HOSTAPD_LEVEL_INFO,
1775 "authentication server did not include required VLAN ID in Access-Accept");
1776 return -1;
1777 }
1778
1779 return ap_sta_set_vlan(hapd, sta, &vlan_desc);
1780 }
1781 #endif /* CONFIG_NO_VLAN */
1782
1783
1784 /**
1785 * ieee802_1x_receive_auth - Process RADIUS frames from Authentication Server
1786 * @msg: RADIUS response message
1787 * @req: RADIUS request message
1788 * @shared_secret: RADIUS shared secret
1789 * @shared_secret_len: Length of shared_secret in octets
1790 * @data: Context data (struct hostapd_data *)
1791 * Returns: Processing status
1792 */
1793 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)1794 ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
1795 const u8 *shared_secret, size_t shared_secret_len,
1796 void *data)
1797 {
1798 struct hostapd_data *hapd = data;
1799 struct sta_info *sta;
1800 u32 session_timeout = 0, termination_action, acct_interim_interval;
1801 int session_timeout_set;
1802 u32 reason_code;
1803 struct eapol_state_machine *sm;
1804 int override_eapReq = 0;
1805 struct radius_hdr *hdr = radius_msg_get_hdr(msg);
1806
1807 sm = ieee802_1x_search_radius_identifier(hapd, hdr->identifier);
1808 if (sm == NULL) {
1809 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Could not find matching "
1810 "station for this RADIUS message");
1811 return RADIUS_RX_UNKNOWN;
1812 }
1813 sta = sm->sta;
1814
1815 /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
1816 * present when packet contains an EAP-Message attribute */
1817 if (hdr->code == RADIUS_CODE_ACCESS_REJECT &&
1818 radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
1819 0) < 0 &&
1820 radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
1821 wpa_printf(MSG_DEBUG, "Allowing RADIUS Access-Reject without "
1822 "Message-Authenticator since it does not include "
1823 "EAP-Message");
1824 } else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
1825 req, 1)) {
1826 wpa_printf(MSG_INFO, "Incoming RADIUS packet did not have correct Message-Authenticator - dropped");
1827 return RADIUS_RX_INVALID_AUTHENTICATOR;
1828 }
1829
1830 if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
1831 hdr->code != RADIUS_CODE_ACCESS_REJECT &&
1832 hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
1833 wpa_printf(MSG_INFO, "Unknown RADIUS message code");
1834 return RADIUS_RX_UNKNOWN;
1835 }
1836
1837 sm->radius_identifier = -1;
1838 wpa_printf(MSG_DEBUG, "RADIUS packet matching with station " MACSTR,
1839 MAC2STR(sta->addr));
1840
1841 radius_msg_free(sm->last_recv_radius);
1842 sm->last_recv_radius = msg;
1843
1844 session_timeout_set =
1845 !radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
1846 &session_timeout);
1847 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_TERMINATION_ACTION,
1848 &termination_action))
1849 termination_action = RADIUS_TERMINATION_ACTION_DEFAULT;
1850
1851 if (hapd->conf->acct_interim_interval == 0 &&
1852 hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
1853 radius_msg_get_attr_int32(msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
1854 &acct_interim_interval) == 0) {
1855 if (acct_interim_interval < 60) {
1856 hostapd_logger(hapd, sta->addr,
1857 HOSTAPD_MODULE_IEEE8021X,
1858 HOSTAPD_LEVEL_INFO,
1859 "ignored too small "
1860 "Acct-Interim-Interval %d",
1861 acct_interim_interval);
1862 } else
1863 sta->acct_interim_interval = acct_interim_interval;
1864 }
1865
1866
1867 switch (hdr->code) {
1868 case RADIUS_CODE_ACCESS_ACCEPT:
1869 #ifndef CONFIG_NO_VLAN
1870 if (hapd->conf->ssid.dynamic_vlan != DYNAMIC_VLAN_DISABLED &&
1871 ieee802_1x_update_vlan(msg, hapd, sta) < 0)
1872 break;
1873
1874 if (sta->vlan_id > 0) {
1875 hostapd_logger(hapd, sta->addr,
1876 HOSTAPD_MODULE_RADIUS,
1877 HOSTAPD_LEVEL_INFO,
1878 "VLAN ID %d", sta->vlan_id);
1879 }
1880
1881 if ((sta->flags & WLAN_STA_ASSOC) &&
1882 ap_sta_bind_vlan(hapd, sta) < 0)
1883 break;
1884 #endif /* CONFIG_NO_VLAN */
1885
1886 sta->session_timeout_set = !!session_timeout_set;
1887 os_get_reltime(&sta->session_timeout);
1888 sta->session_timeout.sec += session_timeout;
1889
1890 /* RFC 3580, Ch. 3.17 */
1891 if (session_timeout_set && termination_action ==
1892 RADIUS_TERMINATION_ACTION_RADIUS_REQUEST)
1893 sm->reAuthPeriod = session_timeout;
1894 else if (session_timeout_set)
1895 ap_sta_session_timeout(hapd, sta, session_timeout);
1896 else
1897 ap_sta_no_session_timeout(hapd, sta);
1898
1899 sm->eap_if->aaaSuccess = TRUE;
1900 override_eapReq = 1;
1901 ieee802_1x_get_keys(hapd, sta, msg, req, shared_secret,
1902 shared_secret_len);
1903 ieee802_1x_store_radius_class(hapd, sta, msg);
1904 ieee802_1x_update_sta_identity(hapd, sta, msg);
1905 ieee802_1x_update_sta_cui(hapd, sta, msg);
1906 ieee802_1x_check_hs20(hapd, sta, msg,
1907 session_timeout_set ?
1908 (int) session_timeout : -1);
1909 break;
1910 case RADIUS_CODE_ACCESS_REJECT:
1911 sm->eap_if->aaaFail = TRUE;
1912 override_eapReq = 1;
1913 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_WLAN_REASON_CODE,
1914 &reason_code) == 0) {
1915 wpa_printf(MSG_DEBUG,
1916 "RADIUS server indicated WLAN-Reason-Code %u in Access-Reject for "
1917 MACSTR, reason_code, MAC2STR(sta->addr));
1918 sta->disconnect_reason_code = reason_code;
1919 }
1920 break;
1921 case RADIUS_CODE_ACCESS_CHALLENGE:
1922 sm->eap_if->aaaEapReq = TRUE;
1923 if (session_timeout_set) {
1924 /* RFC 2869, Ch. 2.3.2; RFC 3580, Ch. 3.17 */
1925 sm->eap_if->aaaMethodTimeout = session_timeout;
1926 hostapd_logger(hapd, sm->addr,
1927 HOSTAPD_MODULE_IEEE8021X,
1928 HOSTAPD_LEVEL_DEBUG,
1929 "using EAP timeout of %d seconds (from "
1930 "RADIUS)",
1931 sm->eap_if->aaaMethodTimeout);
1932 } else {
1933 /*
1934 * Use dynamic retransmission behavior per EAP
1935 * specification.
1936 */
1937 sm->eap_if->aaaMethodTimeout = 0;
1938 }
1939 break;
1940 }
1941
1942 ieee802_1x_decapsulate_radius(hapd, sta);
1943 if (override_eapReq)
1944 sm->eap_if->aaaEapReq = FALSE;
1945
1946 #ifdef CONFIG_FILS
1947 #ifdef NEED_AP_MLME
1948 if (sta->flags & WLAN_STA_PENDING_FILS_ERP) {
1949 /* TODO: Add a PMKSA entry on success? */
1950 ieee802_11_finish_fils_auth(
1951 hapd, sta, hdr->code == RADIUS_CODE_ACCESS_ACCEPT,
1952 sm->eap_if->aaaEapReqData,
1953 sm->eap_if->aaaEapKeyData,
1954 sm->eap_if->aaaEapKeyDataLen);
1955 }
1956 #endif /* NEED_AP_MLME */
1957 #endif /* CONFIG_FILS */
1958
1959 eapol_auth_step(sm);
1960
1961 return RADIUS_RX_QUEUED;
1962 }
1963 #endif /* CONFIG_NO_RADIUS */
1964
1965
ieee802_1x_abort_auth(struct hostapd_data * hapd,struct sta_info * sta)1966 void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta)
1967 {
1968 struct eapol_state_machine *sm = sta->eapol_sm;
1969 if (sm == NULL)
1970 return;
1971
1972 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1973 HOSTAPD_LEVEL_DEBUG, "aborting authentication");
1974
1975 #ifndef CONFIG_NO_RADIUS
1976 radius_msg_free(sm->last_recv_radius);
1977 sm->last_recv_radius = NULL;
1978 #endif /* CONFIG_NO_RADIUS */
1979
1980 if (sm->eap_if->eapTimeout) {
1981 /*
1982 * Disconnect the STA since it did not reply to the last EAP
1983 * request and we cannot continue EAP processing (EAP-Failure
1984 * could only be sent if the EAP peer actually replied).
1985 */
1986 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "EAP Timeout, STA " MACSTR,
1987 MAC2STR(sta->addr));
1988
1989 sm->eap_if->portEnabled = FALSE;
1990 ap_sta_disconnect(hapd, sta, sta->addr,
1991 WLAN_REASON_PREV_AUTH_NOT_VALID);
1992 }
1993 }
1994
1995
ieee802_1x_rekey_broadcast(struct hostapd_data * hapd)1996 static int ieee802_1x_rekey_broadcast(struct hostapd_data *hapd)
1997 {
1998 struct eapol_authenticator *eapol = hapd->eapol_auth;
1999
2000 if (hapd->conf->default_wep_key_len < 1)
2001 return 0;
2002
2003 os_free(eapol->default_wep_key);
2004 eapol->default_wep_key = os_malloc(hapd->conf->default_wep_key_len);
2005 if (eapol->default_wep_key == NULL ||
2006 random_get_bytes(eapol->default_wep_key,
2007 hapd->conf->default_wep_key_len)) {
2008 wpa_printf(MSG_INFO, "Could not generate random WEP key");
2009 os_free(eapol->default_wep_key);
2010 eapol->default_wep_key = NULL;
2011 return -1;
2012 }
2013
2014 wpa_hexdump_key(MSG_DEBUG, "IEEE 802.1X: New default WEP key",
2015 eapol->default_wep_key,
2016 hapd->conf->default_wep_key_len);
2017
2018 return 0;
2019 }
2020
2021
ieee802_1x_sta_key_available(struct hostapd_data * hapd,struct sta_info * sta,void * ctx)2022 static int ieee802_1x_sta_key_available(struct hostapd_data *hapd,
2023 struct sta_info *sta, void *ctx)
2024 {
2025 if (sta->eapol_sm) {
2026 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
2027 eapol_auth_step(sta->eapol_sm);
2028 }
2029 return 0;
2030 }
2031
2032
ieee802_1x_rekey(void * eloop_ctx,void * timeout_ctx)2033 static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx)
2034 {
2035 struct hostapd_data *hapd = eloop_ctx;
2036 struct eapol_authenticator *eapol = hapd->eapol_auth;
2037
2038 if (eapol->default_wep_key_idx >= 3)
2039 eapol->default_wep_key_idx =
2040 hapd->conf->individual_wep_key_len > 0 ? 1 : 0;
2041 else
2042 eapol->default_wep_key_idx++;
2043
2044 wpa_printf(MSG_DEBUG, "IEEE 802.1X: New default WEP key index %d",
2045 eapol->default_wep_key_idx);
2046
2047 if (ieee802_1x_rekey_broadcast(hapd)) {
2048 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
2049 HOSTAPD_LEVEL_WARNING, "failed to generate a "
2050 "new broadcast key");
2051 os_free(eapol->default_wep_key);
2052 eapol->default_wep_key = NULL;
2053 return;
2054 }
2055
2056 /* TODO: Could setup key for RX here, but change default TX keyid only
2057 * after new broadcast key has been sent to all stations. */
2058 if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
2059 broadcast_ether_addr,
2060 eapol->default_wep_key_idx, 1, NULL, 0,
2061 eapol->default_wep_key,
2062 hapd->conf->default_wep_key_len)) {
2063 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
2064 HOSTAPD_LEVEL_WARNING, "failed to configure a "
2065 "new broadcast key");
2066 os_free(eapol->default_wep_key);
2067 eapol->default_wep_key = NULL;
2068 return;
2069 }
2070
2071 ap_for_each_sta(hapd, ieee802_1x_sta_key_available, NULL);
2072
2073 if (hapd->conf->wep_rekeying_period > 0) {
2074 eloop_register_timeout(hapd->conf->wep_rekeying_period, 0,
2075 ieee802_1x_rekey, hapd, NULL);
2076 }
2077 }
2078
2079
ieee802_1x_eapol_send(void * ctx,void * sta_ctx,u8 type,const u8 * data,size_t datalen)2080 static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type,
2081 const u8 *data, size_t datalen)
2082 {
2083 #ifdef CONFIG_WPS
2084 struct sta_info *sta = sta_ctx;
2085
2086 if ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) ==
2087 WLAN_STA_MAYBE_WPS) {
2088 const u8 *identity;
2089 size_t identity_len;
2090 struct eapol_state_machine *sm = sta->eapol_sm;
2091
2092 identity = eap_get_identity(sm->eap, &identity_len);
2093 if (identity &&
2094 ((identity_len == WSC_ID_ENROLLEE_LEN &&
2095 os_memcmp(identity, WSC_ID_ENROLLEE,
2096 WSC_ID_ENROLLEE_LEN) == 0) ||
2097 (identity_len == WSC_ID_REGISTRAR_LEN &&
2098 os_memcmp(identity, WSC_ID_REGISTRAR,
2099 WSC_ID_REGISTRAR_LEN) == 0))) {
2100 wpa_printf(MSG_DEBUG, "WPS: WLAN_STA_MAYBE_WPS -> "
2101 "WLAN_STA_WPS");
2102 sta->flags |= WLAN_STA_WPS;
2103 }
2104 }
2105 #endif /* CONFIG_WPS */
2106
2107 ieee802_1x_send(ctx, sta_ctx, type, data, datalen);
2108 }
2109
2110
ieee802_1x_aaa_send(void * ctx,void * sta_ctx,const u8 * data,size_t datalen)2111 static void ieee802_1x_aaa_send(void *ctx, void *sta_ctx,
2112 const u8 *data, size_t datalen)
2113 {
2114 #ifndef CONFIG_NO_RADIUS
2115 struct hostapd_data *hapd = ctx;
2116 struct sta_info *sta = sta_ctx;
2117
2118 ieee802_1x_encapsulate_radius(hapd, sta, data, datalen);
2119 #endif /* CONFIG_NO_RADIUS */
2120 }
2121
2122
_ieee802_1x_finished(void * ctx,void * sta_ctx,int success,int preauth,int remediation)2123 static void _ieee802_1x_finished(void *ctx, void *sta_ctx, int success,
2124 int preauth, int remediation)
2125 {
2126 struct hostapd_data *hapd = ctx;
2127 struct sta_info *sta = sta_ctx;
2128 if (preauth)
2129 rsn_preauth_finished(hapd, sta, success);
2130 else
2131 ieee802_1x_finished(hapd, sta, success, remediation);
2132 }
2133
2134
ieee802_1x_get_eap_user(void * ctx,const u8 * identity,size_t identity_len,int phase2,struct eap_user * user)2135 static int ieee802_1x_get_eap_user(void *ctx, const u8 *identity,
2136 size_t identity_len, int phase2,
2137 struct eap_user *user)
2138 {
2139 struct hostapd_data *hapd = ctx;
2140 const struct hostapd_eap_user *eap_user;
2141 int i;
2142 int rv = -1;
2143
2144 eap_user = hostapd_get_eap_user(hapd, identity, identity_len, phase2);
2145 if (eap_user == NULL)
2146 goto out;
2147
2148 os_memset(user, 0, sizeof(*user));
2149 user->phase2 = phase2;
2150 for (i = 0; i < EAP_MAX_METHODS; i++) {
2151 user->methods[i].vendor = eap_user->methods[i].vendor;
2152 user->methods[i].method = eap_user->methods[i].method;
2153 }
2154
2155 if (eap_user->password) {
2156 user->password = os_memdup(eap_user->password,
2157 eap_user->password_len);
2158 if (user->password == NULL)
2159 goto out;
2160 user->password_len = eap_user->password_len;
2161 user->password_hash = eap_user->password_hash;
2162 if (eap_user->salt && eap_user->salt_len) {
2163 user->salt = os_memdup(eap_user->salt,
2164 eap_user->salt_len);
2165 if (!user->salt)
2166 goto out;
2167 user->salt_len = eap_user->salt_len;
2168 }
2169 }
2170 user->force_version = eap_user->force_version;
2171 user->macacl = eap_user->macacl;
2172 user->ttls_auth = eap_user->ttls_auth;
2173 user->remediation = eap_user->remediation;
2174 rv = 0;
2175
2176 out:
2177 if (rv)
2178 wpa_printf(MSG_DEBUG, "%s: Failed to find user", __func__);
2179
2180 return rv;
2181 }
2182
2183
ieee802_1x_sta_entry_alive(void * ctx,const u8 * addr)2184 static int ieee802_1x_sta_entry_alive(void *ctx, const u8 *addr)
2185 {
2186 struct hostapd_data *hapd = ctx;
2187 struct sta_info *sta;
2188 sta = ap_get_sta(hapd, addr);
2189 if (sta == NULL || sta->eapol_sm == NULL)
2190 return 0;
2191 return 1;
2192 }
2193
2194
ieee802_1x_logger(void * ctx,const u8 * addr,eapol_logger_level level,const char * txt)2195 static void ieee802_1x_logger(void *ctx, const u8 *addr,
2196 eapol_logger_level level, const char *txt)
2197 {
2198 #ifndef CONFIG_NO_HOSTAPD_LOGGER
2199 struct hostapd_data *hapd = ctx;
2200 int hlevel;
2201
2202 switch (level) {
2203 case EAPOL_LOGGER_WARNING:
2204 hlevel = HOSTAPD_LEVEL_WARNING;
2205 break;
2206 case EAPOL_LOGGER_INFO:
2207 hlevel = HOSTAPD_LEVEL_INFO;
2208 break;
2209 case EAPOL_LOGGER_DEBUG:
2210 default:
2211 hlevel = HOSTAPD_LEVEL_DEBUG;
2212 break;
2213 }
2214
2215 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE8021X, hlevel, "%s",
2216 txt);
2217 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
2218 }
2219
2220
ieee802_1x_set_port_authorized(void * ctx,void * sta_ctx,int authorized)2221 static void ieee802_1x_set_port_authorized(void *ctx, void *sta_ctx,
2222 int authorized)
2223 {
2224 struct hostapd_data *hapd = ctx;
2225 struct sta_info *sta = sta_ctx;
2226 ieee802_1x_set_sta_authorized(hapd, sta, authorized);
2227 }
2228
2229
_ieee802_1x_abort_auth(void * ctx,void * sta_ctx)2230 static void _ieee802_1x_abort_auth(void *ctx, void *sta_ctx)
2231 {
2232 struct hostapd_data *hapd = ctx;
2233 struct sta_info *sta = sta_ctx;
2234 ieee802_1x_abort_auth(hapd, sta);
2235 }
2236
2237
_ieee802_1x_tx_key(void * ctx,void * sta_ctx)2238 static void _ieee802_1x_tx_key(void *ctx, void *sta_ctx)
2239 {
2240 #ifndef CONFIG_FIPS
2241 #ifndef CONFIG_NO_RC4
2242 struct hostapd_data *hapd = ctx;
2243 struct sta_info *sta = sta_ctx;
2244 ieee802_1x_tx_key(hapd, sta);
2245 #endif /* CONFIG_NO_RC4 */
2246 #endif /* CONFIG_FIPS */
2247 }
2248
2249
ieee802_1x_eapol_event(void * ctx,void * sta_ctx,enum eapol_event type)2250 static void ieee802_1x_eapol_event(void *ctx, void *sta_ctx,
2251 enum eapol_event type)
2252 {
2253 /* struct hostapd_data *hapd = ctx; */
2254 struct sta_info *sta = sta_ctx;
2255 switch (type) {
2256 case EAPOL_AUTH_SM_CHANGE:
2257 wpa_auth_sm_notify(sta->wpa_sm);
2258 break;
2259 case EAPOL_AUTH_REAUTHENTICATE:
2260 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
2261 break;
2262 }
2263 }
2264
2265
2266 #ifdef CONFIG_ERP
2267
2268 static struct eap_server_erp_key *
ieee802_1x_erp_get_key(void * ctx,const char * keyname)2269 ieee802_1x_erp_get_key(void *ctx, const char *keyname)
2270 {
2271 struct hostapd_data *hapd = ctx;
2272 struct eap_server_erp_key *erp;
2273
2274 dl_list_for_each(erp, &hapd->erp_keys, struct eap_server_erp_key,
2275 list) {
2276 if (os_strcmp(erp->keyname_nai, keyname) == 0)
2277 return erp;
2278 }
2279
2280 return NULL;
2281 }
2282
2283
ieee802_1x_erp_add_key(void * ctx,struct eap_server_erp_key * erp)2284 static int ieee802_1x_erp_add_key(void *ctx, struct eap_server_erp_key *erp)
2285 {
2286 struct hostapd_data *hapd = ctx;
2287
2288 dl_list_add(&hapd->erp_keys, &erp->list);
2289 return 0;
2290 }
2291
2292 #endif /* CONFIG_ERP */
2293
2294
ieee802_1x_init(struct hostapd_data * hapd)2295 int ieee802_1x_init(struct hostapd_data *hapd)
2296 {
2297 int i;
2298 struct eapol_auth_config conf;
2299 struct eapol_auth_cb cb;
2300
2301 dl_list_init(&hapd->erp_keys);
2302
2303 os_memset(&conf, 0, sizeof(conf));
2304 conf.ctx = hapd;
2305 conf.eap_reauth_period = hapd->conf->eap_reauth_period;
2306 conf.wpa = hapd->conf->wpa;
2307 conf.individual_wep_key_len = hapd->conf->individual_wep_key_len;
2308 conf.eap_server = hapd->conf->eap_server;
2309 conf.ssl_ctx = hapd->ssl_ctx;
2310 conf.msg_ctx = hapd->msg_ctx;
2311 conf.eap_sim_db_priv = hapd->eap_sim_db_priv;
2312 conf.eap_req_id_text = hapd->conf->eap_req_id_text;
2313 conf.eap_req_id_text_len = hapd->conf->eap_req_id_text_len;
2314 conf.erp_send_reauth_start = hapd->conf->erp_send_reauth_start;
2315 conf.erp_domain = hapd->conf->erp_domain;
2316 conf.erp = hapd->conf->eap_server_erp;
2317 conf.tls_session_lifetime = hapd->conf->tls_session_lifetime;
2318 conf.tls_flags = hapd->conf->tls_flags;
2319 conf.pac_opaque_encr_key = hapd->conf->pac_opaque_encr_key;
2320 conf.eap_fast_a_id = hapd->conf->eap_fast_a_id;
2321 conf.eap_fast_a_id_len = hapd->conf->eap_fast_a_id_len;
2322 conf.eap_fast_a_id_info = hapd->conf->eap_fast_a_id_info;
2323 conf.eap_fast_prov = hapd->conf->eap_fast_prov;
2324 conf.pac_key_lifetime = hapd->conf->pac_key_lifetime;
2325 conf.pac_key_refresh_time = hapd->conf->pac_key_refresh_time;
2326 conf.eap_sim_aka_result_ind = hapd->conf->eap_sim_aka_result_ind;
2327 conf.tnc = hapd->conf->tnc;
2328 conf.wps = hapd->wps;
2329 conf.fragment_size = hapd->conf->fragment_size;
2330 conf.pwd_group = hapd->conf->pwd_group;
2331 conf.pbc_in_m1 = hapd->conf->pbc_in_m1;
2332 if (hapd->conf->server_id) {
2333 conf.server_id = (const u8 *) hapd->conf->server_id;
2334 conf.server_id_len = os_strlen(hapd->conf->server_id);
2335 } else {
2336 conf.server_id = (const u8 *) "hostapd";
2337 conf.server_id_len = 7;
2338 }
2339
2340 os_memset(&cb, 0, sizeof(cb));
2341 cb.eapol_send = ieee802_1x_eapol_send;
2342 cb.aaa_send = ieee802_1x_aaa_send;
2343 cb.finished = _ieee802_1x_finished;
2344 cb.get_eap_user = ieee802_1x_get_eap_user;
2345 cb.sta_entry_alive = ieee802_1x_sta_entry_alive;
2346 cb.logger = ieee802_1x_logger;
2347 cb.set_port_authorized = ieee802_1x_set_port_authorized;
2348 cb.abort_auth = _ieee802_1x_abort_auth;
2349 cb.tx_key = _ieee802_1x_tx_key;
2350 cb.eapol_event = ieee802_1x_eapol_event;
2351 #ifdef CONFIG_ERP
2352 cb.erp_get_key = ieee802_1x_erp_get_key;
2353 cb.erp_add_key = ieee802_1x_erp_add_key;
2354 #endif /* CONFIG_ERP */
2355
2356 hapd->eapol_auth = eapol_auth_init(&conf, &cb);
2357 if (hapd->eapol_auth == NULL)
2358 return -1;
2359
2360 if ((hapd->conf->ieee802_1x || hapd->conf->wpa) &&
2361 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1))
2362 return -1;
2363
2364 #ifndef CONFIG_NO_RADIUS
2365 if (radius_client_register(hapd->radius, RADIUS_AUTH,
2366 ieee802_1x_receive_auth, hapd))
2367 return -1;
2368 #endif /* CONFIG_NO_RADIUS */
2369
2370 if (hapd->conf->default_wep_key_len) {
2371 for (i = 0; i < 4; i++)
2372 hostapd_drv_set_key(hapd->conf->iface, hapd,
2373 WPA_ALG_NONE, NULL, i, 0, NULL, 0,
2374 NULL, 0);
2375
2376 ieee802_1x_rekey(hapd, NULL);
2377
2378 if (hapd->eapol_auth->default_wep_key == NULL)
2379 return -1;
2380 }
2381
2382 return 0;
2383 }
2384
2385
ieee802_1x_erp_flush(struct hostapd_data * hapd)2386 void ieee802_1x_erp_flush(struct hostapd_data *hapd)
2387 {
2388 struct eap_server_erp_key *erp;
2389
2390 while ((erp = dl_list_first(&hapd->erp_keys, struct eap_server_erp_key,
2391 list)) != NULL) {
2392 dl_list_del(&erp->list);
2393 bin_clear_free(erp, sizeof(*erp));
2394 }
2395 }
2396
2397
ieee802_1x_deinit(struct hostapd_data * hapd)2398 void ieee802_1x_deinit(struct hostapd_data *hapd)
2399 {
2400 eloop_cancel_timeout(ieee802_1x_rekey, hapd, NULL);
2401
2402 if (hapd->driver && hapd->drv_priv &&
2403 (hapd->conf->ieee802_1x || hapd->conf->wpa))
2404 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
2405
2406 eapol_auth_deinit(hapd->eapol_auth);
2407 hapd->eapol_auth = NULL;
2408
2409 ieee802_1x_erp_flush(hapd);
2410 }
2411
2412
ieee802_1x_tx_status(struct hostapd_data * hapd,struct sta_info * sta,const u8 * buf,size_t len,int ack)2413 int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
2414 const u8 *buf, size_t len, int ack)
2415 {
2416 struct ieee80211_hdr *hdr;
2417 u8 *pos;
2418 const unsigned char rfc1042_hdr[ETH_ALEN] =
2419 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
2420
2421 if (sta == NULL)
2422 return -1;
2423 if (len < sizeof(*hdr) + sizeof(rfc1042_hdr) + 2)
2424 return 0;
2425
2426 hdr = (struct ieee80211_hdr *) buf;
2427 pos = (u8 *) (hdr + 1);
2428 if (os_memcmp(pos, rfc1042_hdr, sizeof(rfc1042_hdr)) != 0)
2429 return 0;
2430 pos += sizeof(rfc1042_hdr);
2431 if (WPA_GET_BE16(pos) != ETH_P_PAE)
2432 return 0;
2433 pos += 2;
2434
2435 return ieee802_1x_eapol_tx_status(hapd, sta, pos, buf + len - pos,
2436 ack);
2437 }
2438
2439
ieee802_1x_eapol_tx_status(struct hostapd_data * hapd,struct sta_info * sta,const u8 * buf,int len,int ack)2440 int ieee802_1x_eapol_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
2441 const u8 *buf, int len, int ack)
2442 {
2443 const struct ieee802_1x_hdr *xhdr =
2444 (const struct ieee802_1x_hdr *) buf;
2445 const u8 *pos = buf + sizeof(*xhdr);
2446 struct ieee802_1x_eapol_key *key;
2447
2448 if (len < (int) sizeof(*xhdr))
2449 return 0;
2450 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR " TX status - version=%d "
2451 "type=%d length=%d - ack=%d",
2452 MAC2STR(sta->addr), xhdr->version, xhdr->type,
2453 be_to_host16(xhdr->length), ack);
2454
2455 #ifdef CONFIG_WPS
2456 if (xhdr->type == IEEE802_1X_TYPE_EAP_PACKET && ack &&
2457 (sta->flags & WLAN_STA_WPS) &&
2458 ap_sta_pending_delayed_1x_auth_fail_disconnect(hapd, sta)) {
2459 wpa_printf(MSG_DEBUG,
2460 "WPS: Indicate EAP completion on ACK for EAP-Failure");
2461 hostapd_wps_eap_completed(hapd);
2462 }
2463 #endif /* CONFIG_WPS */
2464
2465 if (xhdr->type != IEEE802_1X_TYPE_EAPOL_KEY)
2466 return 0;
2467
2468 if (pos + sizeof(struct wpa_eapol_key) <= buf + len) {
2469 const struct wpa_eapol_key *wpa;
2470 wpa = (const struct wpa_eapol_key *) pos;
2471 if (wpa->type == EAPOL_KEY_TYPE_RSN ||
2472 wpa->type == EAPOL_KEY_TYPE_WPA)
2473 wpa_auth_eapol_key_tx_status(hapd->wpa_auth,
2474 sta->wpa_sm, ack);
2475 }
2476
2477 /* EAPOL EAP-Packet packets are eventually re-sent by either Supplicant
2478 * or Authenticator state machines, but EAPOL-Key packets are not
2479 * retransmitted in case of failure. Try to re-send failed EAPOL-Key
2480 * packets couple of times because otherwise STA keys become
2481 * unsynchronized with AP. */
2482 if (!ack && pos + sizeof(*key) <= buf + len) {
2483 key = (struct ieee802_1x_eapol_key *) pos;
2484 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
2485 HOSTAPD_LEVEL_DEBUG, "did not Ack EAPOL-Key "
2486 "frame (%scast index=%d)",
2487 key->key_index & BIT(7) ? "uni" : "broad",
2488 key->key_index & ~BIT(7));
2489 /* TODO: re-send EAPOL-Key couple of times (with short delay
2490 * between them?). If all attempt fail, report error and
2491 * deauthenticate STA so that it will get new keys when
2492 * authenticating again (e.g., after returning in range).
2493 * Separate limit/transmit state needed both for unicast and
2494 * broadcast keys(?) */
2495 }
2496 /* TODO: could move unicast key configuration from ieee802_1x_tx_key()
2497 * to here and change the key only if the EAPOL-Key packet was Acked.
2498 */
2499
2500 return 1;
2501 }
2502
2503
ieee802_1x_get_identity(struct eapol_state_machine * sm,size_t * len)2504 u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len)
2505 {
2506 if (sm == NULL || sm->identity == NULL)
2507 return NULL;
2508
2509 *len = sm->identity_len;
2510 return sm->identity;
2511 }
2512
2513
ieee802_1x_get_radius_class(struct eapol_state_machine * sm,size_t * len,int idx)2514 u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len,
2515 int idx)
2516 {
2517 if (sm == NULL || sm->radius_class.attr == NULL ||
2518 idx >= (int) sm->radius_class.count)
2519 return NULL;
2520
2521 *len = sm->radius_class.attr[idx].len;
2522 return sm->radius_class.attr[idx].data;
2523 }
2524
2525
ieee802_1x_get_radius_cui(struct eapol_state_machine * sm)2526 struct wpabuf * ieee802_1x_get_radius_cui(struct eapol_state_machine *sm)
2527 {
2528 if (sm == NULL)
2529 return NULL;
2530 return sm->radius_cui;
2531 }
2532
2533
ieee802_1x_get_key(struct eapol_state_machine * sm,size_t * len)2534 const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len)
2535 {
2536 *len = 0;
2537 if (sm == NULL)
2538 return NULL;
2539
2540 *len = sm->eap_if->eapKeyDataLen;
2541 return sm->eap_if->eapKeyData;
2542 }
2543
2544
ieee802_1x_notify_port_enabled(struct eapol_state_machine * sm,int enabled)2545 void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm,
2546 int enabled)
2547 {
2548 if (sm == NULL)
2549 return;
2550 sm->eap_if->portEnabled = enabled ? TRUE : FALSE;
2551 eapol_auth_step(sm);
2552 }
2553
2554
ieee802_1x_notify_port_valid(struct eapol_state_machine * sm,int valid)2555 void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm,
2556 int valid)
2557 {
2558 if (sm == NULL)
2559 return;
2560 sm->portValid = valid ? TRUE : FALSE;
2561 eapol_auth_step(sm);
2562 }
2563
2564
ieee802_1x_notify_pre_auth(struct eapol_state_machine * sm,int pre_auth)2565 void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, int pre_auth)
2566 {
2567 if (sm == NULL)
2568 return;
2569 if (pre_auth)
2570 sm->flags |= EAPOL_SM_PREAUTH;
2571 else
2572 sm->flags &= ~EAPOL_SM_PREAUTH;
2573 }
2574
2575
bool_txt(Boolean val)2576 static const char * bool_txt(Boolean val)
2577 {
2578 return val ? "TRUE" : "FALSE";
2579 }
2580
2581
ieee802_1x_get_mib(struct hostapd_data * hapd,char * buf,size_t buflen)2582 int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
2583 {
2584 /* TODO */
2585 return 0;
2586 }
2587
2588
ieee802_1x_get_mib_sta(struct hostapd_data * hapd,struct sta_info * sta,char * buf,size_t buflen)2589 int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
2590 char *buf, size_t buflen)
2591 {
2592 int len = 0, ret;
2593 struct eapol_state_machine *sm = sta->eapol_sm;
2594 struct os_reltime diff;
2595 const char *name1;
2596 const char *name2;
2597 char *identity_buf = NULL;
2598
2599 if (sm == NULL)
2600 return 0;
2601
2602 ret = os_snprintf(buf + len, buflen - len,
2603 "dot1xPaePortNumber=%d\n"
2604 "dot1xPaePortProtocolVersion=%d\n"
2605 "dot1xPaePortCapabilities=1\n"
2606 "dot1xPaePortInitialize=%d\n"
2607 "dot1xPaePortReauthenticate=FALSE\n",
2608 sta->aid,
2609 EAPOL_VERSION,
2610 sm->initialize);
2611 if (os_snprintf_error(buflen - len, ret))
2612 return len;
2613 len += ret;
2614
2615 /* dot1xAuthConfigTable */
2616 ret = os_snprintf(buf + len, buflen - len,
2617 "dot1xAuthPaeState=%d\n"
2618 "dot1xAuthBackendAuthState=%d\n"
2619 "dot1xAuthAdminControlledDirections=%d\n"
2620 "dot1xAuthOperControlledDirections=%d\n"
2621 "dot1xAuthAuthControlledPortStatus=%d\n"
2622 "dot1xAuthAuthControlledPortControl=%d\n"
2623 "dot1xAuthQuietPeriod=%u\n"
2624 "dot1xAuthServerTimeout=%u\n"
2625 "dot1xAuthReAuthPeriod=%u\n"
2626 "dot1xAuthReAuthEnabled=%s\n"
2627 "dot1xAuthKeyTxEnabled=%s\n",
2628 sm->auth_pae_state + 1,
2629 sm->be_auth_state + 1,
2630 sm->adminControlledDirections,
2631 sm->operControlledDirections,
2632 sm->authPortStatus,
2633 sm->portControl,
2634 sm->quietPeriod,
2635 sm->serverTimeout,
2636 sm->reAuthPeriod,
2637 bool_txt(sm->reAuthEnabled),
2638 bool_txt(sm->keyTxEnabled));
2639 if (os_snprintf_error(buflen - len, ret))
2640 return len;
2641 len += ret;
2642
2643 /* dot1xAuthStatsTable */
2644 ret = os_snprintf(buf + len, buflen - len,
2645 "dot1xAuthEapolFramesRx=%u\n"
2646 "dot1xAuthEapolFramesTx=%u\n"
2647 "dot1xAuthEapolStartFramesRx=%u\n"
2648 "dot1xAuthEapolLogoffFramesRx=%u\n"
2649 "dot1xAuthEapolRespIdFramesRx=%u\n"
2650 "dot1xAuthEapolRespFramesRx=%u\n"
2651 "dot1xAuthEapolReqIdFramesTx=%u\n"
2652 "dot1xAuthEapolReqFramesTx=%u\n"
2653 "dot1xAuthInvalidEapolFramesRx=%u\n"
2654 "dot1xAuthEapLengthErrorFramesRx=%u\n"
2655 "dot1xAuthLastEapolFrameVersion=%u\n"
2656 "dot1xAuthLastEapolFrameSource=" MACSTR "\n",
2657 sm->dot1xAuthEapolFramesRx,
2658 sm->dot1xAuthEapolFramesTx,
2659 sm->dot1xAuthEapolStartFramesRx,
2660 sm->dot1xAuthEapolLogoffFramesRx,
2661 sm->dot1xAuthEapolRespIdFramesRx,
2662 sm->dot1xAuthEapolRespFramesRx,
2663 sm->dot1xAuthEapolReqIdFramesTx,
2664 sm->dot1xAuthEapolReqFramesTx,
2665 sm->dot1xAuthInvalidEapolFramesRx,
2666 sm->dot1xAuthEapLengthErrorFramesRx,
2667 sm->dot1xAuthLastEapolFrameVersion,
2668 MAC2STR(sm->addr));
2669 if (os_snprintf_error(buflen - len, ret))
2670 return len;
2671 len += ret;
2672
2673 /* dot1xAuthDiagTable */
2674 ret = os_snprintf(buf + len, buflen - len,
2675 "dot1xAuthEntersConnecting=%u\n"
2676 "dot1xAuthEapLogoffsWhileConnecting=%u\n"
2677 "dot1xAuthEntersAuthenticating=%u\n"
2678 "dot1xAuthAuthSuccessesWhileAuthenticating=%u\n"
2679 "dot1xAuthAuthTimeoutsWhileAuthenticating=%u\n"
2680 "dot1xAuthAuthFailWhileAuthenticating=%u\n"
2681 "dot1xAuthAuthEapStartsWhileAuthenticating=%u\n"
2682 "dot1xAuthAuthEapLogoffWhileAuthenticating=%u\n"
2683 "dot1xAuthAuthReauthsWhileAuthenticated=%u\n"
2684 "dot1xAuthAuthEapStartsWhileAuthenticated=%u\n"
2685 "dot1xAuthAuthEapLogoffWhileAuthenticated=%u\n"
2686 "dot1xAuthBackendResponses=%u\n"
2687 "dot1xAuthBackendAccessChallenges=%u\n"
2688 "dot1xAuthBackendOtherRequestsToSupplicant=%u\n"
2689 "dot1xAuthBackendAuthSuccesses=%u\n"
2690 "dot1xAuthBackendAuthFails=%u\n",
2691 sm->authEntersConnecting,
2692 sm->authEapLogoffsWhileConnecting,
2693 sm->authEntersAuthenticating,
2694 sm->authAuthSuccessesWhileAuthenticating,
2695 sm->authAuthTimeoutsWhileAuthenticating,
2696 sm->authAuthFailWhileAuthenticating,
2697 sm->authAuthEapStartsWhileAuthenticating,
2698 sm->authAuthEapLogoffWhileAuthenticating,
2699 sm->authAuthReauthsWhileAuthenticated,
2700 sm->authAuthEapStartsWhileAuthenticated,
2701 sm->authAuthEapLogoffWhileAuthenticated,
2702 sm->backendResponses,
2703 sm->backendAccessChallenges,
2704 sm->backendOtherRequestsToSupplicant,
2705 sm->backendAuthSuccesses,
2706 sm->backendAuthFails);
2707 if (os_snprintf_error(buflen - len, ret))
2708 return len;
2709 len += ret;
2710
2711 /* dot1xAuthSessionStatsTable */
2712 os_reltime_age(&sta->acct_session_start, &diff);
2713 if (sm->eap && !sm->identity) {
2714 const u8 *id;
2715 size_t id_len;
2716
2717 id = eap_get_identity(sm->eap, &id_len);
2718 if (id)
2719 identity_buf = dup_binstr(id, id_len);
2720 }
2721 ret = os_snprintf(buf + len, buflen - len,
2722 /* TODO: dot1xAuthSessionOctetsRx */
2723 /* TODO: dot1xAuthSessionOctetsTx */
2724 /* TODO: dot1xAuthSessionFramesRx */
2725 /* TODO: dot1xAuthSessionFramesTx */
2726 "dot1xAuthSessionId=%016llX\n"
2727 "dot1xAuthSessionAuthenticMethod=%d\n"
2728 "dot1xAuthSessionTime=%u\n"
2729 "dot1xAuthSessionTerminateCause=999\n"
2730 "dot1xAuthSessionUserName=%s\n",
2731 (unsigned long long) sta->acct_session_id,
2732 (wpa_key_mgmt_wpa_ieee8021x(
2733 wpa_auth_sta_key_mgmt(sta->wpa_sm))) ?
2734 1 : 2,
2735 (unsigned int) diff.sec,
2736 sm->identity ? (char *) sm->identity :
2737 (identity_buf ? identity_buf : "N/A"));
2738 os_free(identity_buf);
2739 if (os_snprintf_error(buflen - len, ret))
2740 return len;
2741 len += ret;
2742
2743 if (sm->acct_multi_session_id) {
2744 ret = os_snprintf(buf + len, buflen - len,
2745 "authMultiSessionId=%016llX\n",
2746 (unsigned long long)
2747 sm->acct_multi_session_id);
2748 if (os_snprintf_error(buflen - len, ret))
2749 return len;
2750 len += ret;
2751 }
2752
2753 name1 = eap_server_get_name(0, sm->eap_type_authsrv);
2754 name2 = eap_server_get_name(0, sm->eap_type_supp);
2755 ret = os_snprintf(buf + len, buflen - len,
2756 "last_eap_type_as=%d (%s)\n"
2757 "last_eap_type_sta=%d (%s)\n",
2758 sm->eap_type_authsrv, name1,
2759 sm->eap_type_supp, name2);
2760 if (os_snprintf_error(buflen - len, ret))
2761 return len;
2762 len += ret;
2763
2764 return len;
2765 }
2766
2767
2768 #ifdef CONFIG_HS20
ieee802_1x_wnm_notif_send(void * eloop_ctx,void * timeout_ctx)2769 static void ieee802_1x_wnm_notif_send(void *eloop_ctx, void *timeout_ctx)
2770 {
2771 struct hostapd_data *hapd = eloop_ctx;
2772 struct sta_info *sta = timeout_ctx;
2773
2774 if (sta->remediation) {
2775 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2776 MACSTR " to indicate Subscription Remediation",
2777 MAC2STR(sta->addr));
2778 hs20_send_wnm_notification(hapd, sta->addr,
2779 sta->remediation_method,
2780 sta->remediation_url);
2781 os_free(sta->remediation_url);
2782 sta->remediation_url = NULL;
2783 }
2784
2785 if (sta->hs20_deauth_req) {
2786 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2787 MACSTR " to indicate imminent deauthentication",
2788 MAC2STR(sta->addr));
2789 hs20_send_wnm_notification_deauth_req(hapd, sta->addr,
2790 sta->hs20_deauth_req);
2791 }
2792
2793 if (sta->hs20_t_c_filtering) {
2794 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2795 MACSTR " to indicate Terms and Conditions filtering",
2796 MAC2STR(sta->addr));
2797 hs20_send_wnm_notification_t_c(hapd, sta->addr, sta->t_c_url);
2798 os_free(sta->t_c_url);
2799 sta->t_c_url = NULL;
2800 }
2801 }
2802 #endif /* CONFIG_HS20 */
2803
2804
ieee802_1x_finished(struct hostapd_data * hapd,struct sta_info * sta,int success,int remediation)2805 static void ieee802_1x_finished(struct hostapd_data *hapd,
2806 struct sta_info *sta, int success,
2807 int remediation)
2808 {
2809 const u8 *key;
2810 size_t len;
2811 /* TODO: get PMKLifetime from WPA parameters */
2812 static const int dot11RSNAConfigPMKLifetime = 43200;
2813 unsigned int session_timeout;
2814 struct os_reltime now, remaining;
2815
2816 #ifdef CONFIG_HS20
2817 if (remediation && !sta->remediation) {
2818 sta->remediation = 1;
2819 os_free(sta->remediation_url);
2820 sta->remediation_url =
2821 os_strdup(hapd->conf->subscr_remediation_url);
2822 sta->remediation_method = 1; /* SOAP-XML SPP */
2823 }
2824
2825 if (success && (sta->remediation || sta->hs20_deauth_req ||
2826 sta->hs20_t_c_filtering)) {
2827 wpa_printf(MSG_DEBUG, "HS 2.0: Schedule WNM-Notification to "
2828 MACSTR " in 100 ms", MAC2STR(sta->addr));
2829 eloop_cancel_timeout(ieee802_1x_wnm_notif_send, hapd, sta);
2830 eloop_register_timeout(0, 100000, ieee802_1x_wnm_notif_send,
2831 hapd, sta);
2832 }
2833 #endif /* CONFIG_HS20 */
2834
2835 key = ieee802_1x_get_key(sta->eapol_sm, &len);
2836 if (sta->session_timeout_set) {
2837 os_get_reltime(&now);
2838 os_reltime_sub(&sta->session_timeout, &now, &remaining);
2839 session_timeout = (remaining.sec > 0) ? remaining.sec : 1;
2840 } else {
2841 session_timeout = dot11RSNAConfigPMKLifetime;
2842 }
2843 if (success && key && len >= PMK_LEN && !sta->remediation &&
2844 !sta->hs20_deauth_requested &&
2845 wpa_auth_pmksa_add(sta->wpa_sm, key, len, session_timeout,
2846 sta->eapol_sm) == 0) {
2847 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
2848 HOSTAPD_LEVEL_DEBUG,
2849 "Added PMKSA cache entry (IEEE 802.1X)");
2850 }
2851
2852 if (!success) {
2853 /*
2854 * Many devices require deauthentication after WPS provisioning
2855 * and some may not be be able to do that themselves, so
2856 * disconnect the client here. In addition, this may also
2857 * benefit IEEE 802.1X/EAPOL authentication cases, too since
2858 * the EAPOL PAE state machine would remain in HELD state for
2859 * considerable amount of time and some EAP methods, like
2860 * EAP-FAST with anonymous provisioning, may require another
2861 * EAPOL authentication to be started to complete connection.
2862 */
2863 ap_sta_delayed_1x_auth_fail_disconnect(hapd, sta);
2864 }
2865 }
2866