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 #ifdef CONFIG_SQLITE
11 #include <sqlite3.h>
12 #endif /* CONFIG_SQLITE */
13
14 #include "utils/common.h"
15 #include "utils/eloop.h"
16 #include "crypto/md5.h"
17 #include "crypto/crypto.h"
18 #include "crypto/random.h"
19 #include "common/ieee802_11_defs.h"
20 #include "radius/radius.h"
21 #include "radius/radius_client.h"
22 #include "eap_server/eap.h"
23 #include "eap_common/eap_wsc_common.h"
24 #include "eapol_auth/eapol_auth_sm.h"
25 #include "eapol_auth/eapol_auth_sm_i.h"
26 #include "p2p/p2p.h"
27 #include "hostapd.h"
28 #include "accounting.h"
29 #include "sta_info.h"
30 #include "wpa_auth.h"
31 #include "preauth_auth.h"
32 #include "pmksa_cache_auth.h"
33 #include "ap_config.h"
34 #include "ap_drv_ops.h"
35 #include "wps_hostapd.h"
36 #include "hs20.h"
37 /* FIX: Not really a good thing to require ieee802_11.h here.. (FILS) */
38 #include "ieee802_11.h"
39 #include "ieee802_1x.h"
40 #include "wpa_auth_kay.h"
41
42
43 #ifdef CONFIG_HS20
44 static void ieee802_1x_wnm_notif_send(void *eloop_ctx, void *timeout_ctx);
45 #endif /* CONFIG_HS20 */
46 static void ieee802_1x_finished(struct hostapd_data *hapd,
47 struct sta_info *sta, int success,
48 int remediation);
49
50
ieee802_1x_send(struct hostapd_data * hapd,struct sta_info * sta,u8 type,const u8 * data,size_t datalen)51 static void ieee802_1x_send(struct hostapd_data *hapd, struct sta_info *sta,
52 u8 type, const u8 *data, size_t datalen)
53 {
54 u8 *buf;
55 struct ieee802_1x_hdr *xhdr;
56 size_t len;
57 int encrypt = 0;
58
59 len = sizeof(*xhdr) + datalen;
60 buf = os_zalloc(len);
61 if (!buf) {
62 wpa_printf(MSG_ERROR, "malloc() failed for %s(len=%lu)",
63 __func__, (unsigned long) len);
64 return;
65 }
66
67 xhdr = (struct ieee802_1x_hdr *) buf;
68 xhdr->version = hapd->conf->eapol_version;
69 #ifdef CONFIG_MACSEC
70 if (xhdr->version > 2 && hapd->conf->macsec_policy == 0)
71 xhdr->version = 2;
72 #endif /* CONFIG_MACSEC */
73 xhdr->type = type;
74 xhdr->length = host_to_be16(datalen);
75
76 if (datalen > 0 && data != NULL)
77 os_memcpy(xhdr + 1, data, datalen);
78
79 if (wpa_auth_pairwise_set(sta->wpa_sm))
80 encrypt = 1;
81 #ifdef CONFIG_TESTING_OPTIONS
82 if (hapd->ext_eapol_frame_io) {
83 size_t hex_len = 2 * len + 1;
84 char *hex = os_malloc(hex_len);
85
86 if (hex) {
87 wpa_snprintf_hex(hex, hex_len, buf, len);
88 wpa_msg(hapd->msg_ctx, MSG_INFO,
89 "EAPOL-TX " MACSTR " %s",
90 MAC2STR(sta->addr), hex);
91 os_free(hex);
92 }
93 } else
94 #endif /* CONFIG_TESTING_OPTIONS */
95 if (sta->flags & WLAN_STA_PREAUTH) {
96 rsn_preauth_send(hapd, sta, buf, len);
97 } else {
98 hostapd_drv_hapd_send_eapol(
99 hapd, sta->addr, buf, len,
100 encrypt, hostapd_sta_flags_to_drv(sta->flags));
101 }
102
103 os_free(buf);
104 }
105
106
ieee802_1x_set_sta_authorized(struct hostapd_data * hapd,struct sta_info * sta,int authorized)107 void ieee802_1x_set_sta_authorized(struct hostapd_data *hapd,
108 struct sta_info *sta, int authorized)
109 {
110 int res;
111
112 if (sta->flags & WLAN_STA_PREAUTH)
113 return;
114
115 if (authorized) {
116 ap_sta_set_authorized(hapd, sta, 1);
117 res = hostapd_set_authorized(hapd, sta, 1);
118 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
119 HOSTAPD_LEVEL_DEBUG, "authorizing port");
120 } else {
121 ap_sta_set_authorized(hapd, sta, 0);
122 res = hostapd_set_authorized(hapd, sta, 0);
123 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
124 HOSTAPD_LEVEL_DEBUG, "unauthorizing port");
125 }
126
127 if (res && errno != ENOENT) {
128 wpa_printf(MSG_DEBUG, "Could not set station " MACSTR
129 " flags for kernel driver (errno=%d).",
130 MAC2STR(sta->addr), errno);
131 }
132
133 if (authorized) {
134 os_get_reltime(&sta->connected_time);
135 accounting_sta_start(hapd, sta);
136 }
137 }
138
139
140 #ifdef CONFIG_WEP
141 #ifndef CONFIG_FIPS
142 #ifndef CONFIG_NO_RC4
143
ieee802_1x_tx_key_one(struct hostapd_data * hapd,struct sta_info * sta,int idx,int broadcast,u8 * key_data,size_t key_len)144 static void ieee802_1x_tx_key_one(struct hostapd_data *hapd,
145 struct sta_info *sta,
146 int idx, int broadcast,
147 u8 *key_data, size_t key_len)
148 {
149 u8 *buf, *ekey;
150 struct ieee802_1x_hdr *hdr;
151 struct ieee802_1x_eapol_key *key;
152 size_t len, ekey_len;
153 struct eapol_state_machine *sm = sta->eapol_sm;
154
155 if (!sm)
156 return;
157
158 len = sizeof(*key) + key_len;
159 buf = os_zalloc(sizeof(*hdr) + len);
160 if (!buf)
161 return;
162
163 hdr = (struct ieee802_1x_hdr *) buf;
164 key = (struct ieee802_1x_eapol_key *) (hdr + 1);
165 key->type = EAPOL_KEY_TYPE_RC4;
166 WPA_PUT_BE16(key->key_length, key_len);
167 wpa_get_ntp_timestamp(key->replay_counter);
168 if (os_memcmp(key->replay_counter,
169 hapd->last_1x_eapol_key_replay_counter,
170 IEEE8021X_REPLAY_COUNTER_LEN) <= 0) {
171 /* NTP timestamp did not increment from last EAPOL-Key frame;
172 * use previously used value + 1 instead. */
173 inc_byte_array(hapd->last_1x_eapol_key_replay_counter,
174 IEEE8021X_REPLAY_COUNTER_LEN);
175 os_memcpy(key->replay_counter,
176 hapd->last_1x_eapol_key_replay_counter,
177 IEEE8021X_REPLAY_COUNTER_LEN);
178 } else {
179 os_memcpy(hapd->last_1x_eapol_key_replay_counter,
180 key->replay_counter,
181 IEEE8021X_REPLAY_COUNTER_LEN);
182 }
183
184 if (random_get_bytes(key->key_iv, sizeof(key->key_iv))) {
185 wpa_printf(MSG_ERROR, "Could not get random numbers");
186 os_free(buf);
187 return;
188 }
189
190 key->key_index = idx | (broadcast ? 0 : BIT(7));
191 if (hapd->conf->eapol_key_index_workaround) {
192 /* According to some information, WinXP Supplicant seems to
193 * interpret bit7 as an indication whether the key is to be
194 * activated, so make it possible to enable workaround that
195 * sets this bit for all keys. */
196 key->key_index |= BIT(7);
197 }
198
199 /* Key is encrypted using "Key-IV + MSK[0..31]" as the RC4-key and
200 * MSK[32..63] is used to sign the message. */
201 if (!sm->eap_if->eapKeyData || sm->eap_if->eapKeyDataLen < 64) {
202 wpa_printf(MSG_ERROR,
203 "No eapKeyData available for encrypting and signing EAPOL-Key");
204 os_free(buf);
205 return;
206 }
207 os_memcpy((u8 *) (key + 1), key_data, key_len);
208 ekey_len = sizeof(key->key_iv) + 32;
209 ekey = os_malloc(ekey_len);
210 if (!ekey) {
211 wpa_printf(MSG_ERROR, "Could not encrypt key");
212 os_free(buf);
213 return;
214 }
215 os_memcpy(ekey, key->key_iv, sizeof(key->key_iv));
216 os_memcpy(ekey + sizeof(key->key_iv), sm->eap_if->eapKeyData, 32);
217 rc4_skip(ekey, ekey_len, 0, (u8 *) (key + 1), key_len);
218 os_free(ekey);
219
220 /* This header is needed here for HMAC-MD5, but it will be regenerated
221 * in ieee802_1x_send() */
222 hdr->version = hapd->conf->eapol_version;
223 #ifdef CONFIG_MACSEC
224 if (hdr->version > 2)
225 hdr->version = 2;
226 #endif /* CONFIG_MACSEC */
227 hdr->type = IEEE802_1X_TYPE_EAPOL_KEY;
228 hdr->length = host_to_be16(len);
229 hmac_md5(sm->eap_if->eapKeyData + 32, 32, buf, sizeof(*hdr) + len,
230 key->key_signature);
231
232 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key to " MACSTR
233 " (%s index=%d)", MAC2STR(sm->addr),
234 broadcast ? "broadcast" : "unicast", idx);
235 ieee802_1x_send(hapd, sta, IEEE802_1X_TYPE_EAPOL_KEY, (u8 *) key, len);
236 if (sta->eapol_sm)
237 sta->eapol_sm->dot1xAuthEapolFramesTx++;
238 os_free(buf);
239 }
240
241
ieee802_1x_tx_key(struct hostapd_data * hapd,struct sta_info * sta)242 static void ieee802_1x_tx_key(struct hostapd_data *hapd, struct sta_info *sta)
243 {
244 struct eapol_authenticator *eapol = hapd->eapol_auth;
245 struct eapol_state_machine *sm = sta->eapol_sm;
246
247 if (!sm || !sm->eap_if->eapKeyData)
248 return;
249
250 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key(s) to " MACSTR,
251 MAC2STR(sta->addr));
252
253 #ifndef CONFIG_NO_VLAN
254 if (sta->vlan_id > 0) {
255 wpa_printf(MSG_ERROR, "Using WEP with vlans is not supported.");
256 return;
257 }
258 #endif /* CONFIG_NO_VLAN */
259
260 if (eapol->default_wep_key) {
261 ieee802_1x_tx_key_one(hapd, sta, eapol->default_wep_key_idx, 1,
262 eapol->default_wep_key,
263 hapd->conf->default_wep_key_len);
264 }
265
266 if (hapd->conf->individual_wep_key_len > 0) {
267 u8 *ikey;
268
269 ikey = os_malloc(hapd->conf->individual_wep_key_len);
270 if (!ikey ||
271 random_get_bytes(ikey, hapd->conf->individual_wep_key_len))
272 {
273 wpa_printf(MSG_ERROR,
274 "Could not generate random individual WEP key");
275 os_free(ikey);
276 return;
277 }
278
279 wpa_hexdump_key(MSG_DEBUG, "Individual WEP key",
280 ikey, hapd->conf->individual_wep_key_len);
281
282 ieee802_1x_tx_key_one(hapd, sta, 0, 0, ikey,
283 hapd->conf->individual_wep_key_len);
284
285 /* TODO: set encryption in TX callback, i.e., only after STA
286 * has ACKed EAPOL-Key frame */
287 if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
288 sta->addr, 0, 0, 1, NULL, 0, ikey,
289 hapd->conf->individual_wep_key_len,
290 KEY_FLAG_PAIRWISE_RX_TX)) {
291 wpa_printf(MSG_ERROR,
292 "Could not set individual WEP encryption");
293 }
294
295 os_free(ikey);
296 }
297 }
298
299 #endif /* CONFIG_NO_RC4 */
300 #endif /* CONFIG_FIPS */
301 #endif /* CONFIG_WEP */
302
303
radius_mode_txt(struct hostapd_data * hapd)304 const char *radius_mode_txt(struct hostapd_data *hapd)
305 {
306 switch (hapd->iface->conf->hw_mode) {
307 case HOSTAPD_MODE_IEEE80211AD:
308 return "802.11ad";
309 case HOSTAPD_MODE_IEEE80211A:
310 return "802.11a";
311 case HOSTAPD_MODE_IEEE80211G:
312 return "802.11g";
313 case HOSTAPD_MODE_IEEE80211B:
314 default:
315 return "802.11b";
316 }
317 }
318
319
radius_sta_rate(struct hostapd_data * hapd,struct sta_info * sta)320 int radius_sta_rate(struct hostapd_data *hapd, struct sta_info *sta)
321 {
322 int i;
323 u8 rate = 0;
324
325 for (i = 0; i < sta->supported_rates_len; i++)
326 if ((sta->supported_rates[i] & 0x7f) > rate)
327 rate = sta->supported_rates[i] & 0x7f;
328
329 return rate;
330 }
331
332
333 #ifndef CONFIG_NO_RADIUS
ieee802_1x_learn_identity(struct hostapd_data * hapd,struct eapol_state_machine * sm,const u8 * eap,size_t len)334 static void ieee802_1x_learn_identity(struct hostapd_data *hapd,
335 struct eapol_state_machine *sm,
336 const u8 *eap, size_t len)
337 {
338 const u8 *identity;
339 size_t identity_len;
340 const struct eap_hdr *hdr = (const struct eap_hdr *) eap;
341
342 if (len <= sizeof(struct eap_hdr) ||
343 (hdr->code == EAP_CODE_RESPONSE &&
344 eap[sizeof(struct eap_hdr)] != EAP_TYPE_IDENTITY) ||
345 (hdr->code == EAP_CODE_INITIATE &&
346 eap[sizeof(struct eap_hdr)] != EAP_ERP_TYPE_REAUTH) ||
347 (hdr->code != EAP_CODE_RESPONSE &&
348 hdr->code != EAP_CODE_INITIATE))
349 return;
350
351 eap_erp_update_identity(sm->eap, eap, len);
352 identity = eap_get_identity(sm->eap, &identity_len);
353 if (!identity)
354 return;
355
356 /* Save station identity for future RADIUS packets */
357 os_free(sm->identity);
358 sm->identity = (u8 *) dup_binstr(identity, identity_len);
359 if (!sm->identity) {
360 sm->identity_len = 0;
361 return;
362 }
363
364 sm->identity_len = identity_len;
365 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
366 HOSTAPD_LEVEL_DEBUG, "STA identity '%s'", sm->identity);
367 sm->dot1xAuthEapolRespIdFramesRx++;
368 }
369
370
add_common_radius_sta_attr_rsn(struct hostapd_data * hapd,struct hostapd_radius_attr * req_attr,struct sta_info * sta,struct radius_msg * msg)371 static int add_common_radius_sta_attr_rsn(struct hostapd_data *hapd,
372 struct hostapd_radius_attr *req_attr,
373 struct sta_info *sta,
374 struct radius_msg *msg)
375 {
376 u32 suite;
377 int ver, val;
378
379 ver = wpa_auth_sta_wpa_version(sta->wpa_sm);
380 val = wpa_auth_get_pairwise(sta->wpa_sm);
381 suite = wpa_cipher_to_suite(ver, val);
382 if (val != -1 &&
383 !hostapd_config_get_radius_attr(req_attr,
384 RADIUS_ATTR_WLAN_PAIRWISE_CIPHER) &&
385 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_PAIRWISE_CIPHER,
386 suite)) {
387 wpa_printf(MSG_ERROR, "Could not add WLAN-Pairwise-Cipher");
388 return -1;
389 }
390
391 suite = wpa_cipher_to_suite(((hapd->conf->wpa & 0x2) ||
392 hapd->conf->osen) ?
393 WPA_PROTO_RSN : WPA_PROTO_WPA,
394 hapd->conf->wpa_group);
395 if (!hostapd_config_get_radius_attr(req_attr,
396 RADIUS_ATTR_WLAN_GROUP_CIPHER) &&
397 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_GROUP_CIPHER,
398 suite)) {
399 wpa_printf(MSG_ERROR, "Could not add WLAN-Group-Cipher");
400 return -1;
401 }
402
403 val = wpa_auth_sta_key_mgmt(sta->wpa_sm);
404 suite = wpa_akm_to_suite(val);
405 if (val != -1 &&
406 !hostapd_config_get_radius_attr(req_attr,
407 RADIUS_ATTR_WLAN_AKM_SUITE) &&
408 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_AKM_SUITE,
409 suite)) {
410 wpa_printf(MSG_ERROR, "Could not add WLAN-AKM-Suite");
411 return -1;
412 }
413
414 if (hapd->conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
415 suite = wpa_cipher_to_suite(WPA_PROTO_RSN,
416 hapd->conf->group_mgmt_cipher);
417 if (!hostapd_config_get_radius_attr(
418 req_attr, RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER) &&
419 !radius_msg_add_attr_int32(
420 msg, RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER, suite)) {
421 wpa_printf(MSG_ERROR,
422 "Could not add WLAN-Group-Mgmt-Cipher");
423 return -1;
424 }
425 }
426
427 return 0;
428 }
429
430
add_common_radius_sta_attr(struct hostapd_data * hapd,struct hostapd_radius_attr * req_attr,struct sta_info * sta,struct radius_msg * msg)431 static int add_common_radius_sta_attr(struct hostapd_data *hapd,
432 struct hostapd_radius_attr *req_attr,
433 struct sta_info *sta,
434 struct radius_msg *msg)
435 {
436 char buf[128];
437
438 if (!hostapd_config_get_radius_attr(req_attr,
439 RADIUS_ATTR_SERVICE_TYPE) &&
440 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_SERVICE_TYPE,
441 RADIUS_SERVICE_TYPE_FRAMED)) {
442 wpa_printf(MSG_ERROR, "Could not add Service-Type");
443 return -1;
444 }
445
446 if (!hostapd_config_get_radius_attr(req_attr,
447 RADIUS_ATTR_NAS_PORT) &&
448 sta->aid > 0 &&
449 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT, sta->aid)) {
450 wpa_printf(MSG_ERROR, "Could not add NAS-Port");
451 return -1;
452 }
453
454 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
455 MAC2STR(sta->addr));
456 buf[sizeof(buf) - 1] = '\0';
457 if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
458 (u8 *) buf, os_strlen(buf))) {
459 wpa_printf(MSG_ERROR, "Could not add Calling-Station-Id");
460 return -1;
461 }
462
463 if (sta->flags & WLAN_STA_PREAUTH) {
464 os_strlcpy(buf, "IEEE 802.11i Pre-Authentication",
465 sizeof(buf));
466 } else {
467 os_snprintf(buf, sizeof(buf), "CONNECT %d%sMbps %s",
468 radius_sta_rate(hapd, sta) / 2,
469 (radius_sta_rate(hapd, sta) & 1) ? ".5" : "",
470 radius_mode_txt(hapd));
471 buf[sizeof(buf) - 1] = '\0';
472 }
473 if (!hostapd_config_get_radius_attr(req_attr,
474 RADIUS_ATTR_CONNECT_INFO) &&
475 !radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
476 (u8 *) buf, os_strlen(buf))) {
477 wpa_printf(MSG_ERROR, "Could not add Connect-Info");
478 return -1;
479 }
480
481 if (sta->acct_session_id) {
482 os_snprintf(buf, sizeof(buf), "%016llX",
483 (unsigned long long) sta->acct_session_id);
484 if (!radius_msg_add_attr(msg, RADIUS_ATTR_ACCT_SESSION_ID,
485 (u8 *) buf, os_strlen(buf))) {
486 wpa_printf(MSG_ERROR, "Could not add Acct-Session-Id");
487 return -1;
488 }
489 }
490
491 if ((hapd->conf->wpa & 2) &&
492 !hapd->conf->disable_pmksa_caching &&
493 sta->eapol_sm && sta->eapol_sm->acct_multi_session_id) {
494 os_snprintf(buf, sizeof(buf), "%016llX",
495 (unsigned long long)
496 sta->eapol_sm->acct_multi_session_id);
497 if (!radius_msg_add_attr(
498 msg, RADIUS_ATTR_ACCT_MULTI_SESSION_ID,
499 (u8 *) buf, os_strlen(buf))) {
500 wpa_printf(MSG_INFO,
501 "Could not add Acct-Multi-Session-Id");
502 return -1;
503 }
504 }
505
506 #ifdef CONFIG_IEEE80211R_AP
507 if (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) &&
508 sta->wpa_sm &&
509 (wpa_key_mgmt_ft(wpa_auth_sta_key_mgmt(sta->wpa_sm)) ||
510 sta->auth_alg == WLAN_AUTH_FT) &&
511 !hostapd_config_get_radius_attr(req_attr,
512 RADIUS_ATTR_MOBILITY_DOMAIN_ID) &&
513 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_MOBILITY_DOMAIN_ID,
514 WPA_GET_BE16(
515 hapd->conf->mobility_domain))) {
516 wpa_printf(MSG_ERROR, "Could not add Mobility-Domain-Id");
517 return -1;
518 }
519 #endif /* CONFIG_IEEE80211R_AP */
520
521 if ((hapd->conf->wpa || hapd->conf->osen) && sta->wpa_sm &&
522 add_common_radius_sta_attr_rsn(hapd, req_attr, sta, msg) < 0)
523 return -1;
524
525 return 0;
526 }
527
528
add_common_radius_attr(struct hostapd_data * hapd,struct hostapd_radius_attr * req_attr,struct sta_info * sta,struct radius_msg * msg)529 int add_common_radius_attr(struct hostapd_data *hapd,
530 struct hostapd_radius_attr *req_attr,
531 struct sta_info *sta,
532 struct radius_msg *msg)
533 {
534 char buf[128];
535 struct hostapd_radius_attr *attr;
536 int len;
537
538 if (!hostapd_config_get_radius_attr(req_attr,
539 RADIUS_ATTR_NAS_IP_ADDRESS) &&
540 hapd->conf->own_ip_addr.af == AF_INET &&
541 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
542 (u8 *) &hapd->conf->own_ip_addr.u.v4, 4)) {
543 wpa_printf(MSG_ERROR, "Could not add NAS-IP-Address");
544 return -1;
545 }
546
547 #ifdef CONFIG_IPV6
548 if (!hostapd_config_get_radius_attr(req_attr,
549 RADIUS_ATTR_NAS_IPV6_ADDRESS) &&
550 hapd->conf->own_ip_addr.af == AF_INET6 &&
551 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IPV6_ADDRESS,
552 (u8 *) &hapd->conf->own_ip_addr.u.v6, 16)) {
553 wpa_printf(MSG_ERROR, "Could not add NAS-IPv6-Address");
554 return -1;
555 }
556 #endif /* CONFIG_IPV6 */
557
558 if (!hostapd_config_get_radius_attr(req_attr,
559 RADIUS_ATTR_NAS_IDENTIFIER) &&
560 hapd->conf->nas_identifier &&
561 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IDENTIFIER,
562 (u8 *) hapd->conf->nas_identifier,
563 os_strlen(hapd->conf->nas_identifier))) {
564 wpa_printf(MSG_ERROR, "Could not add NAS-Identifier");
565 return -1;
566 }
567
568 len = os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT ":",
569 MAC2STR(hapd->own_addr));
570 os_memcpy(&buf[len], hapd->conf->ssid.ssid,
571 hapd->conf->ssid.ssid_len);
572 len += hapd->conf->ssid.ssid_len;
573 if (!hostapd_config_get_radius_attr(req_attr,
574 RADIUS_ATTR_CALLED_STATION_ID) &&
575 !radius_msg_add_attr(msg, RADIUS_ATTR_CALLED_STATION_ID,
576 (u8 *) buf, len)) {
577 wpa_printf(MSG_ERROR, "Could not add Called-Station-Id");
578 return -1;
579 }
580
581 if (!hostapd_config_get_radius_attr(req_attr,
582 RADIUS_ATTR_NAS_PORT_TYPE) &&
583 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
584 RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
585 wpa_printf(MSG_ERROR, "Could not add NAS-Port-Type");
586 return -1;
587 }
588
589 #ifdef CONFIG_INTERWORKING
590 if (hapd->conf->interworking &&
591 !is_zero_ether_addr(hapd->conf->hessid)) {
592 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
593 MAC2STR(hapd->conf->hessid));
594 buf[sizeof(buf) - 1] = '\0';
595 if (!hostapd_config_get_radius_attr(req_attr,
596 RADIUS_ATTR_WLAN_HESSID) &&
597 !radius_msg_add_attr(msg, RADIUS_ATTR_WLAN_HESSID,
598 (u8 *) buf, os_strlen(buf))) {
599 wpa_printf(MSG_ERROR, "Could not add WLAN-HESSID");
600 return -1;
601 }
602 }
603 #endif /* CONFIG_INTERWORKING */
604
605 if (sta && add_common_radius_sta_attr(hapd, req_attr, sta, msg) < 0)
606 return -1;
607
608 for (attr = req_attr; attr; attr = attr->next) {
609 if (!radius_msg_add_attr(msg, attr->type,
610 wpabuf_head(attr->val),
611 wpabuf_len(attr->val))) {
612 wpa_printf(MSG_ERROR, "Could not add RADIUS attribute");
613 return -1;
614 }
615 }
616
617 return 0;
618 }
619
620
add_sqlite_radius_attr(struct hostapd_data * hapd,struct sta_info * sta,struct radius_msg * msg,int acct)621 int add_sqlite_radius_attr(struct hostapd_data *hapd, struct sta_info *sta,
622 struct radius_msg *msg, int acct)
623 {
624 #ifdef CONFIG_SQLITE
625 const char *attrtxt;
626 char addrtxt[3 * ETH_ALEN];
627 char *sql;
628 sqlite3_stmt *stmt = NULL;
629
630 if (!hapd->rad_attr_db)
631 return 0;
632
633 os_snprintf(addrtxt, sizeof(addrtxt), MACSTR, MAC2STR(sta->addr));
634
635 sql = "SELECT attr FROM radius_attributes WHERE sta=? AND (reqtype=? OR reqtype IS NULL);";
636 if (sqlite3_prepare_v2(hapd->rad_attr_db, sql, os_strlen(sql), &stmt,
637 NULL) != SQLITE_OK) {
638 wpa_printf(MSG_ERROR, "DB: Failed to prepare SQL statement: %s",
639 sqlite3_errmsg(hapd->rad_attr_db));
640 return -1;
641 }
642 sqlite3_bind_text(stmt, 1, addrtxt, os_strlen(addrtxt), SQLITE_STATIC);
643 sqlite3_bind_text(stmt, 2, acct ? "acct" : "auth", 4, SQLITE_STATIC);
644 while (sqlite3_step(stmt) == SQLITE_ROW) {
645 struct hostapd_radius_attr *attr;
646 struct radius_attr_hdr *hdr;
647
648 attrtxt = (const char *) sqlite3_column_text(stmt, 0);
649 attr = hostapd_parse_radius_attr(attrtxt);
650 if (!attr) {
651 wpa_printf(MSG_ERROR,
652 "Skipping invalid attribute from SQL: %s",
653 attrtxt);
654 continue;
655 }
656 wpa_printf(MSG_DEBUG, "Adding RADIUS attribute from SQL: %s",
657 attrtxt);
658 hdr = radius_msg_add_attr(msg, attr->type,
659 wpabuf_head(attr->val),
660 wpabuf_len(attr->val));
661 hostapd_config_free_radius_attr(attr);
662 if (!hdr) {
663 wpa_printf(MSG_ERROR,
664 "Could not add RADIUS attribute from SQL");
665 continue;
666 }
667 }
668
669 sqlite3_reset(stmt);
670 sqlite3_clear_bindings(stmt);
671 sqlite3_finalize(stmt);
672 #endif /* CONFIG_SQLITE */
673
674 return 0;
675 }
676
677
ieee802_1x_encapsulate_radius(struct hostapd_data * hapd,struct sta_info * sta,const u8 * eap,size_t len)678 void ieee802_1x_encapsulate_radius(struct hostapd_data *hapd,
679 struct sta_info *sta,
680 const u8 *eap, size_t len)
681 {
682 struct radius_msg *msg;
683 struct eapol_state_machine *sm = sta->eapol_sm;
684
685 if (!sm)
686 return;
687
688 ieee802_1x_learn_identity(hapd, sm, eap, len);
689
690 wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS packet");
691
692 sm->radius_identifier = radius_client_get_id(hapd->radius);
693 msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
694 sm->radius_identifier);
695 if (!msg) {
696 wpa_printf(MSG_INFO, "Could not create new RADIUS packet");
697 return;
698 }
699
700 if (radius_msg_make_authenticator(msg) < 0) {
701 wpa_printf(MSG_INFO, "Could not make Request Authenticator");
702 goto fail;
703 }
704
705 if (sm->identity &&
706 !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
707 sm->identity, sm->identity_len)) {
708 wpa_printf(MSG_INFO, "Could not add User-Name");
709 goto fail;
710 }
711
712 if (add_common_radius_attr(hapd, hapd->conf->radius_auth_req_attr, sta,
713 msg) < 0)
714 goto fail;
715
716 if (sta && add_sqlite_radius_attr(hapd, sta, msg, 0) < 0)
717 goto fail;
718
719 /* TODO: should probably check MTU from driver config; 2304 is max for
720 * IEEE 802.11, but use 1400 to avoid problems with too large packets
721 */
722 if (!hostapd_config_get_radius_attr(hapd->conf->radius_auth_req_attr,
723 RADIUS_ATTR_FRAMED_MTU) &&
724 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
725 wpa_printf(MSG_INFO, "Could not add Framed-MTU");
726 goto fail;
727 }
728
729 if (!radius_msg_add_eap(msg, eap, len)) {
730 wpa_printf(MSG_INFO, "Could not add EAP-Message");
731 goto fail;
732 }
733
734 /* State attribute must be copied if and only if this packet is
735 * Access-Request reply to the previous Access-Challenge */
736 if (sm->last_recv_radius &&
737 radius_msg_get_hdr(sm->last_recv_radius)->code ==
738 RADIUS_CODE_ACCESS_CHALLENGE) {
739 int res = radius_msg_copy_attr(msg, sm->last_recv_radius,
740 RADIUS_ATTR_STATE);
741 if (res < 0) {
742 wpa_printf(MSG_INFO,
743 "Could not copy State attribute from previous Access-Challenge");
744 goto fail;
745 }
746 if (res > 0)
747 wpa_printf(MSG_DEBUG, "Copied RADIUS State Attribute");
748 }
749
750 if (hapd->conf->radius_request_cui) {
751 const u8 *cui;
752 size_t cui_len;
753 /* Add previously learned CUI or nul CUI to request CUI */
754 if (sm->radius_cui) {
755 cui = wpabuf_head(sm->radius_cui);
756 cui_len = wpabuf_len(sm->radius_cui);
757 } else {
758 cui = (const u8 *) "\0";
759 cui_len = 1;
760 }
761 if (!radius_msg_add_attr(msg,
762 RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
763 cui, cui_len)) {
764 wpa_printf(MSG_ERROR, "Could not add CUI");
765 goto fail;
766 }
767 }
768
769 #ifdef CONFIG_HS20
770 if (hapd->conf->hs20) {
771 u8 ver = hapd->conf->hs20_release - 1;
772
773 if (!radius_msg_add_wfa(
774 msg, RADIUS_VENDOR_ATTR_WFA_HS20_AP_VERSION,
775 &ver, 1)) {
776 wpa_printf(MSG_ERROR,
777 "Could not add HS 2.0 AP version");
778 goto fail;
779 }
780
781 if (sta->hs20_ie && wpabuf_len(sta->hs20_ie) > 0) {
782 const u8 *pos;
783 u8 buf[3];
784 u16 id;
785
786 pos = wpabuf_head_u8(sta->hs20_ie);
787 buf[0] = (*pos) >> 4;
788 if (((*pos) & HS20_PPS_MO_ID_PRESENT) &&
789 wpabuf_len(sta->hs20_ie) >= 3)
790 id = WPA_GET_LE16(pos + 1);
791 else
792 id = 0;
793 WPA_PUT_BE16(buf + 1, id);
794 if (!radius_msg_add_wfa(
795 msg,
796 RADIUS_VENDOR_ATTR_WFA_HS20_STA_VERSION,
797 buf, sizeof(buf))) {
798 wpa_printf(MSG_ERROR,
799 "Could not add HS 2.0 STA version");
800 goto fail;
801 }
802 }
803
804 if (sta->roaming_consortium &&
805 !radius_msg_add_wfa(
806 msg, RADIUS_VENDOR_ATTR_WFA_HS20_ROAMING_CONSORTIUM,
807 wpabuf_head(sta->roaming_consortium),
808 wpabuf_len(sta->roaming_consortium))) {
809 wpa_printf(MSG_ERROR,
810 "Could not add HS 2.0 Roaming Consortium");
811 goto fail;
812 }
813
814 if (hapd->conf->t_c_filename) {
815 be32 timestamp;
816
817 if (!radius_msg_add_wfa(
818 msg,
819 RADIUS_VENDOR_ATTR_WFA_HS20_T_C_FILENAME,
820 (const u8 *) hapd->conf->t_c_filename,
821 os_strlen(hapd->conf->t_c_filename))) {
822 wpa_printf(MSG_ERROR,
823 "Could not add HS 2.0 T&C Filename");
824 goto fail;
825 }
826
827 timestamp = host_to_be32(hapd->conf->t_c_timestamp);
828 if (!radius_msg_add_wfa(
829 msg,
830 RADIUS_VENDOR_ATTR_WFA_HS20_TIMESTAMP,
831 (const u8 *) ×tamp,
832 sizeof(timestamp))) {
833 wpa_printf(MSG_ERROR,
834 "Could not add HS 2.0 Timestamp");
835 goto fail;
836 }
837 }
838 }
839 #endif /* CONFIG_HS20 */
840
841 if (radius_client_send(hapd->radius, msg, RADIUS_AUTH, sta->addr) < 0)
842 goto fail;
843
844 return;
845
846 fail:
847 radius_msg_free(msg);
848 }
849 #endif /* CONFIG_NO_RADIUS */
850
851
handle_eap_response(struct hostapd_data * hapd,struct sta_info * sta,struct eap_hdr * eap,size_t len)852 static void handle_eap_response(struct hostapd_data *hapd,
853 struct sta_info *sta, struct eap_hdr *eap,
854 size_t len)
855 {
856 u8 type, *data;
857 struct eapol_state_machine *sm = sta->eapol_sm;
858
859 if (!sm)
860 return;
861
862 data = (u8 *) (eap + 1);
863
864 if (len < sizeof(*eap) + 1) {
865 wpa_printf(MSG_INFO, "%s: too short response data", __func__);
866 return;
867 }
868
869 sm->eap_type_supp = type = data[0];
870
871 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
872 HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
873 "id=%d len=%d) from STA: EAP Response-%s (%d)",
874 eap->code, eap->identifier, be_to_host16(eap->length),
875 eap_server_get_name(0, type), type);
876
877 sm->dot1xAuthEapolRespFramesRx++;
878
879 wpabuf_free(sm->eap_if->eapRespData);
880 sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
881 sm->eapolEap = true;
882 }
883
884
handle_eap_initiate(struct hostapd_data * hapd,struct sta_info * sta,struct eap_hdr * eap,size_t len)885 static void handle_eap_initiate(struct hostapd_data *hapd,
886 struct sta_info *sta, struct eap_hdr *eap,
887 size_t len)
888 {
889 #ifdef CONFIG_ERP
890 u8 type, *data;
891 struct eapol_state_machine *sm = sta->eapol_sm;
892
893 if (!sm)
894 return;
895
896 if (len < sizeof(*eap) + 1) {
897 wpa_printf(MSG_INFO, "%s: too short response data", __func__);
898 return;
899 }
900
901 data = (u8 *) (eap + 1);
902 type = data[0];
903
904 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
905 HOSTAPD_LEVEL_DEBUG,
906 "received EAP packet (code=%d id=%d len=%d) from STA: EAP Initiate type %u",
907 eap->code, eap->identifier, be_to_host16(eap->length),
908 type);
909
910 wpabuf_free(sm->eap_if->eapRespData);
911 sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
912 sm->eapolEap = true;
913 #endif /* CONFIG_ERP */
914 }
915
916
917 #ifndef CONFIG_NO_STDOUT_DEBUG
eap_code_str(u8 code)918 static const char * eap_code_str(u8 code)
919 {
920 switch (code) {
921 case EAP_CODE_REQUEST:
922 return "request";
923 case EAP_CODE_RESPONSE:
924 return "response";
925 case EAP_CODE_SUCCESS:
926 return "success";
927 case EAP_CODE_FAILURE:
928 return "failure";
929 case EAP_CODE_INITIATE:
930 return "initiate";
931 case EAP_CODE_FINISH:
932 return "finish";
933 default:
934 return "unknown";
935 }
936 }
937 #endif /* CONFIG_NO_STDOUT_DEBUG */
938
939
940 /* Process incoming EAP packet from Supplicant */
handle_eap(struct hostapd_data * hapd,struct sta_info * sta,u8 * buf,size_t len)941 static void handle_eap(struct hostapd_data *hapd, struct sta_info *sta,
942 u8 *buf, size_t len)
943 {
944 struct eap_hdr *eap;
945 u16 eap_len;
946
947 if (len < sizeof(*eap)) {
948 wpa_printf(MSG_INFO, " too short EAP packet");
949 return;
950 }
951
952 eap = (struct eap_hdr *) buf;
953
954 eap_len = be_to_host16(eap->length);
955 wpa_printf(MSG_DEBUG, "EAP: code=%d (%s) identifier=%d length=%d",
956 eap->code, eap_code_str(eap->code), eap->identifier,
957 eap_len);
958 if (eap_len < sizeof(*eap)) {
959 wpa_printf(MSG_DEBUG, " Invalid EAP length");
960 return;
961 } else if (eap_len > len) {
962 wpa_printf(MSG_DEBUG,
963 " Too short frame to contain this EAP packet");
964 return;
965 } else if (eap_len < len) {
966 wpa_printf(MSG_DEBUG,
967 " Ignoring %lu extra bytes after EAP packet",
968 (unsigned long) len - eap_len);
969 }
970
971 switch (eap->code) {
972 case EAP_CODE_RESPONSE:
973 handle_eap_response(hapd, sta, eap, eap_len);
974 break;
975 case EAP_CODE_INITIATE:
976 handle_eap_initiate(hapd, sta, eap, eap_len);
977 break;
978 }
979 }
980
981
982 struct eapol_state_machine *
ieee802_1x_alloc_eapol_sm(struct hostapd_data * hapd,struct sta_info * sta)983 ieee802_1x_alloc_eapol_sm(struct hostapd_data *hapd, struct sta_info *sta)
984 {
985 int flags = 0;
986
987 if (sta->flags & WLAN_STA_PREAUTH)
988 flags |= EAPOL_SM_PREAUTH;
989 if (sta->wpa_sm) {
990 flags |= EAPOL_SM_USES_WPA;
991 if (wpa_auth_sta_get_pmksa(sta->wpa_sm))
992 flags |= EAPOL_SM_FROM_PMKSA_CACHE;
993 }
994 return eapol_auth_alloc(hapd->eapol_auth, sta->addr, flags,
995 sta->wps_ie, sta->p2p_ie, sta,
996 sta->identity, sta->radius_cui);
997 }
998
999
ieee802_1x_save_eapol(struct sta_info * sta,const u8 * buf,size_t len)1000 static void ieee802_1x_save_eapol(struct sta_info *sta, const u8 *buf,
1001 size_t len)
1002 {
1003 if (sta->pending_eapol_rx) {
1004 wpabuf_free(sta->pending_eapol_rx->buf);
1005 } else {
1006 sta->pending_eapol_rx =
1007 os_malloc(sizeof(*sta->pending_eapol_rx));
1008 if (!sta->pending_eapol_rx)
1009 return;
1010 }
1011
1012 sta->pending_eapol_rx->buf = wpabuf_alloc_copy(buf, len);
1013 if (!sta->pending_eapol_rx->buf) {
1014 os_free(sta->pending_eapol_rx);
1015 sta->pending_eapol_rx = NULL;
1016 return;
1017 }
1018
1019 os_get_reltime(&sta->pending_eapol_rx->rx_time);
1020 }
1021
1022
1023 /**
1024 * ieee802_1x_receive - Process the EAPOL frames from the Supplicant
1025 * @hapd: hostapd BSS data
1026 * @sa: Source address (sender of the EAPOL frame)
1027 * @buf: EAPOL frame
1028 * @len: Length of buf in octets
1029 *
1030 * This function is called for each incoming EAPOL frame from the interface
1031 */
ieee802_1x_receive(struct hostapd_data * hapd,const u8 * sa,const u8 * buf,size_t len)1032 void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf,
1033 size_t len)
1034 {
1035 struct sta_info *sta;
1036 struct ieee802_1x_hdr *hdr;
1037 struct ieee802_1x_eapol_key *key;
1038 u16 datalen;
1039 struct rsn_pmksa_cache_entry *pmksa;
1040 int key_mgmt;
1041
1042 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen &&
1043 !hapd->conf->wps_state)
1044 return;
1045
1046 wpa_printf(MSG_DEBUG, "IEEE 802.1X: %lu bytes from " MACSTR,
1047 (unsigned long) len, MAC2STR(sa));
1048 sta = ap_get_sta(hapd, sa);
1049 if (!sta || (!(sta->flags & (WLAN_STA_ASSOC | WLAN_STA_PREAUTH)) &&
1050 !(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED))) {
1051 wpa_printf(MSG_DEBUG,
1052 "IEEE 802.1X data frame from not associated/Pre-authenticating STA");
1053
1054 if (sta && (sta->flags & WLAN_STA_AUTH)) {
1055 wpa_printf(MSG_DEBUG, "Saving EAPOL frame from " MACSTR
1056 " for later use", MAC2STR(sta->addr));
1057 ieee802_1x_save_eapol(sta, buf, len);
1058 }
1059
1060 return;
1061 }
1062
1063 if (len < sizeof(*hdr)) {
1064 wpa_printf(MSG_INFO, " too short IEEE 802.1X packet");
1065 return;
1066 }
1067
1068 hdr = (struct ieee802_1x_hdr *) buf;
1069 datalen = be_to_host16(hdr->length);
1070 wpa_printf(MSG_DEBUG, " IEEE 802.1X: version=%d type=%d length=%d",
1071 hdr->version, hdr->type, datalen);
1072
1073 if (len - sizeof(*hdr) < datalen) {
1074 wpa_printf(MSG_INFO,
1075 " frame too short for this IEEE 802.1X packet");
1076 if (sta->eapol_sm)
1077 sta->eapol_sm->dot1xAuthEapLengthErrorFramesRx++;
1078 return;
1079 }
1080 if (len - sizeof(*hdr) > datalen) {
1081 wpa_printf(MSG_DEBUG,
1082 " ignoring %lu extra octets after IEEE 802.1X packet",
1083 (unsigned long) len - sizeof(*hdr) - datalen);
1084 }
1085
1086 if (sta->eapol_sm) {
1087 sta->eapol_sm->dot1xAuthLastEapolFrameVersion = hdr->version;
1088 sta->eapol_sm->dot1xAuthEapolFramesRx++;
1089 }
1090
1091 key = (struct ieee802_1x_eapol_key *) (hdr + 1);
1092 if (datalen >= sizeof(struct ieee802_1x_eapol_key) &&
1093 hdr->type == IEEE802_1X_TYPE_EAPOL_KEY &&
1094 (key->type == EAPOL_KEY_TYPE_WPA ||
1095 key->type == EAPOL_KEY_TYPE_RSN)) {
1096 wpa_receive(hapd->wpa_auth, sta->wpa_sm, (u8 *) hdr,
1097 sizeof(*hdr) + datalen);
1098 return;
1099 }
1100
1101 if (!hapd->conf->ieee802_1x && !hapd->conf->osen &&
1102 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
1103 wpa_printf(MSG_DEBUG,
1104 "IEEE 802.1X: Ignore EAPOL message - 802.1X not enabled and WPS not used");
1105 return;
1106 }
1107
1108 key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
1109 if (key_mgmt != -1 &&
1110 (wpa_key_mgmt_wpa_psk(key_mgmt) || key_mgmt == WPA_KEY_MGMT_OWE ||
1111 key_mgmt == WPA_KEY_MGMT_DPP)) {
1112 wpa_printf(MSG_DEBUG,
1113 "IEEE 802.1X: Ignore EAPOL message - STA is using PSK");
1114 return;
1115 }
1116
1117 if (!sta->eapol_sm) {
1118 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
1119 if (!sta->eapol_sm)
1120 return;
1121
1122 #ifdef CONFIG_WPS
1123 if (!hapd->conf->ieee802_1x && hapd->conf->wps_state) {
1124 u32 wflags = sta->flags & (WLAN_STA_WPS |
1125 WLAN_STA_WPS2 |
1126 WLAN_STA_MAYBE_WPS);
1127 if (wflags == WLAN_STA_MAYBE_WPS ||
1128 wflags == (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) {
1129 /*
1130 * Delay EAPOL frame transmission until a
1131 * possible WPS STA initiates the handshake
1132 * with EAPOL-Start. Only allow the wait to be
1133 * skipped if the STA is known to support WPS
1134 * 2.0.
1135 */
1136 wpa_printf(MSG_DEBUG,
1137 "WPS: Do not start EAPOL until EAPOL-Start is received");
1138 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
1139 }
1140 }
1141 #endif /* CONFIG_WPS */
1142
1143 sta->eapol_sm->eap_if->portEnabled = true;
1144 }
1145
1146 /* since we support version 1, we can ignore version field and proceed
1147 * as specified in version 1 standard [IEEE Std 802.1X-2001, 7.5.5] */
1148 /* TODO: actually, we are not version 1 anymore.. However, Version 2
1149 * does not change frame contents, so should be ok to process frames
1150 * more or less identically. Some changes might be needed for
1151 * verification of fields. */
1152
1153 switch (hdr->type) {
1154 case IEEE802_1X_TYPE_EAP_PACKET:
1155 handle_eap(hapd, sta, (u8 *) (hdr + 1), datalen);
1156 break;
1157
1158 case IEEE802_1X_TYPE_EAPOL_START:
1159 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1160 HOSTAPD_LEVEL_DEBUG,
1161 "received EAPOL-Start from STA");
1162 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
1163 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
1164 if (pmksa) {
1165 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
1166 HOSTAPD_LEVEL_DEBUG,
1167 "cached PMKSA available - ignore it since STA sent EAPOL-Start");
1168 wpa_auth_sta_clear_pmksa(sta->wpa_sm, pmksa);
1169 }
1170 sta->eapol_sm->eapolStart = true;
1171 sta->eapol_sm->dot1xAuthEapolStartFramesRx++;
1172 eap_server_clear_identity(sta->eapol_sm->eap);
1173 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
1174 break;
1175
1176 case IEEE802_1X_TYPE_EAPOL_LOGOFF:
1177 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1178 HOSTAPD_LEVEL_DEBUG,
1179 "received EAPOL-Logoff from STA");
1180 sta->acct_terminate_cause =
1181 RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1182 accounting_sta_stop(hapd, sta);
1183 sta->eapol_sm->eapolLogoff = true;
1184 sta->eapol_sm->dot1xAuthEapolLogoffFramesRx++;
1185 eap_server_clear_identity(sta->eapol_sm->eap);
1186 break;
1187
1188 case IEEE802_1X_TYPE_EAPOL_KEY:
1189 wpa_printf(MSG_DEBUG, " EAPOL-Key");
1190 if (!ap_sta_is_authorized(sta)) {
1191 wpa_printf(MSG_DEBUG,
1192 " Dropped key data from unauthorized Supplicant");
1193 break;
1194 }
1195 break;
1196
1197 case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT:
1198 wpa_printf(MSG_DEBUG, " EAPOL-Encapsulated-ASF-Alert");
1199 /* TODO: implement support for this; show data */
1200 break;
1201
1202 #ifdef CONFIG_MACSEC
1203 case IEEE802_1X_TYPE_EAPOL_MKA:
1204 wpa_printf(MSG_EXCESSIVE,
1205 "EAPOL type %d will be handled by MKA", hdr->type);
1206 break;
1207 #endif /* CONFIG_MACSEC */
1208
1209 default:
1210 wpa_printf(MSG_DEBUG, " unknown IEEE 802.1X packet type");
1211 sta->eapol_sm->dot1xAuthInvalidEapolFramesRx++;
1212 break;
1213 }
1214
1215 eapol_auth_step(sta->eapol_sm);
1216 }
1217
1218
1219 /**
1220 * ieee802_1x_new_station - Start IEEE 802.1X authentication
1221 * @hapd: hostapd BSS data
1222 * @sta: The station
1223 *
1224 * This function is called to start IEEE 802.1X authentication when a new
1225 * station completes IEEE 802.11 association.
1226 */
ieee802_1x_new_station(struct hostapd_data * hapd,struct sta_info * sta)1227 void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta)
1228 {
1229 struct rsn_pmksa_cache_entry *pmksa;
1230 int reassoc = 1;
1231 int force_1x = 0;
1232 int key_mgmt;
1233
1234 #ifdef CONFIG_WPS
1235 if (hapd->conf->wps_state &&
1236 ((hapd->conf->wpa && (sta->flags & WLAN_STA_MAYBE_WPS)) ||
1237 (sta->flags & WLAN_STA_WPS))) {
1238 /*
1239 * Need to enable IEEE 802.1X/EAPOL state machines for possible
1240 * WPS handshake even if IEEE 802.1X/EAPOL is not used for
1241 * authentication in this BSS.
1242 */
1243 force_1x = 1;
1244 }
1245 #endif /* CONFIG_WPS */
1246
1247 if (!force_1x && !hapd->conf->ieee802_1x && !hapd->conf->osen) {
1248 wpa_printf(MSG_DEBUG,
1249 "IEEE 802.1X: Ignore STA - 802.1X not enabled or forced for WPS");
1250 /*
1251 * Clear any possible EAPOL authenticator state to support
1252 * reassociation change from WPS to PSK.
1253 */
1254 ieee802_1x_free_station(hapd, sta);
1255 return;
1256 }
1257
1258 key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
1259 if (key_mgmt != -1 &&
1260 (wpa_key_mgmt_wpa_psk(key_mgmt) || key_mgmt == WPA_KEY_MGMT_OWE ||
1261 key_mgmt == WPA_KEY_MGMT_DPP)) {
1262 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - using PSK");
1263 /*
1264 * Clear any possible EAPOL authenticator state to support
1265 * reassociation change from WPA-EAP to PSK.
1266 */
1267 ieee802_1x_free_station(hapd, sta);
1268 return;
1269 }
1270
1271 if (!sta->eapol_sm) {
1272 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1273 HOSTAPD_LEVEL_DEBUG, "start authentication");
1274 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
1275 if (!sta->eapol_sm) {
1276 hostapd_logger(hapd, sta->addr,
1277 HOSTAPD_MODULE_IEEE8021X,
1278 HOSTAPD_LEVEL_INFO,
1279 "failed to allocate state machine");
1280 return;
1281 }
1282 reassoc = 0;
1283 }
1284
1285 #ifdef CONFIG_WPS
1286 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
1287 if (!hapd->conf->ieee802_1x && hapd->conf->wps_state &&
1288 !(sta->flags & WLAN_STA_WPS2)) {
1289 /*
1290 * Delay EAPOL frame transmission until a possible WPS STA
1291 * initiates the handshake with EAPOL-Start. Only allow the
1292 * wait to be skipped if the STA is known to support WPS 2.0.
1293 */
1294 wpa_printf(MSG_DEBUG,
1295 "WPS: Do not start EAPOL until EAPOL-Start is received");
1296 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
1297 }
1298 #endif /* CONFIG_WPS */
1299
1300 sta->eapol_sm->eap_if->portEnabled = true;
1301
1302 #ifdef CONFIG_IEEE80211R_AP
1303 if (sta->auth_alg == WLAN_AUTH_FT) {
1304 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1305 HOSTAPD_LEVEL_DEBUG,
1306 "PMK from FT - skip IEEE 802.1X/EAP");
1307 /* Setup EAPOL state machines to already authenticated state
1308 * because of existing FT information from R0KH. */
1309 sta->eapol_sm->keyRun = true;
1310 sta->eapol_sm->eap_if->eapKeyAvailable = true;
1311 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1312 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1313 sta->eapol_sm->authSuccess = true;
1314 sta->eapol_sm->authFail = false;
1315 sta->eapol_sm->portValid = true;
1316 if (sta->eapol_sm->eap)
1317 eap_sm_notify_cached(sta->eapol_sm->eap);
1318 ap_sta_bind_vlan(hapd, sta);
1319 return;
1320 }
1321 #endif /* CONFIG_IEEE80211R_AP */
1322
1323 #ifdef CONFIG_FILS
1324 if (sta->auth_alg == WLAN_AUTH_FILS_SK ||
1325 sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
1326 sta->auth_alg == WLAN_AUTH_FILS_PK) {
1327 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1328 HOSTAPD_LEVEL_DEBUG,
1329 "PMK from FILS - skip IEEE 802.1X/EAP");
1330 /* Setup EAPOL state machines to already authenticated state
1331 * because of existing FILS information. */
1332 sta->eapol_sm->keyRun = true;
1333 sta->eapol_sm->eap_if->eapKeyAvailable = true;
1334 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1335 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1336 sta->eapol_sm->authSuccess = true;
1337 sta->eapol_sm->authFail = false;
1338 sta->eapol_sm->portValid = true;
1339 if (sta->eapol_sm->eap)
1340 eap_sm_notify_cached(sta->eapol_sm->eap);
1341 wpa_auth_set_ptk_rekey_timer(sta->wpa_sm);
1342 return;
1343 }
1344 #endif /* CONFIG_FILS */
1345
1346 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
1347 if (pmksa) {
1348 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1349 HOSTAPD_LEVEL_DEBUG,
1350 "PMK from PMKSA cache - skip IEEE 802.1X/EAP");
1351 /* Setup EAPOL state machines to already authenticated state
1352 * because of existing PMKSA information in the cache. */
1353 sta->eapol_sm->keyRun = true;
1354 sta->eapol_sm->eap_if->eapKeyAvailable = true;
1355 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1356 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1357 sta->eapol_sm->authSuccess = true;
1358 sta->eapol_sm->authFail = false;
1359 if (sta->eapol_sm->eap)
1360 eap_sm_notify_cached(sta->eapol_sm->eap);
1361 pmksa_cache_to_eapol_data(hapd, pmksa, sta->eapol_sm);
1362 ap_sta_bind_vlan(hapd, sta);
1363 } else {
1364 if (reassoc) {
1365 /*
1366 * Force EAPOL state machines to start
1367 * re-authentication without having to wait for the
1368 * Supplicant to send EAPOL-Start.
1369 */
1370 sta->eapol_sm->reAuthenticate = true;
1371 }
1372 eapol_auth_step(sta->eapol_sm);
1373 }
1374 }
1375
1376
ieee802_1x_free_station(struct hostapd_data * hapd,struct sta_info * sta)1377 void ieee802_1x_free_station(struct hostapd_data *hapd, struct sta_info *sta)
1378 {
1379 struct eapol_state_machine *sm = sta->eapol_sm;
1380
1381 #ifdef CONFIG_HS20
1382 eloop_cancel_timeout(ieee802_1x_wnm_notif_send, hapd, sta);
1383 #endif /* CONFIG_HS20 */
1384
1385 if (sta->pending_eapol_rx) {
1386 wpabuf_free(sta->pending_eapol_rx->buf);
1387 os_free(sta->pending_eapol_rx);
1388 sta->pending_eapol_rx = NULL;
1389 }
1390
1391 if (!sm)
1392 return;
1393
1394 sta->eapol_sm = NULL;
1395
1396 #ifndef CONFIG_NO_RADIUS
1397 radius_msg_free(sm->last_recv_radius);
1398 radius_free_class(&sm->radius_class);
1399 #endif /* CONFIG_NO_RADIUS */
1400
1401 eapol_auth_free(sm);
1402 }
1403
1404
1405 #ifndef CONFIG_NO_RADIUS
ieee802_1x_decapsulate_radius(struct hostapd_data * hapd,struct sta_info * sta)1406 static void ieee802_1x_decapsulate_radius(struct hostapd_data *hapd,
1407 struct sta_info *sta)
1408 {
1409 struct wpabuf *eap;
1410 const struct eap_hdr *hdr;
1411 int eap_type = -1;
1412 char buf[64];
1413 struct radius_msg *msg;
1414 struct eapol_state_machine *sm = sta->eapol_sm;
1415
1416 if (!sm || !sm->last_recv_radius) {
1417 if (sm)
1418 sm->eap_if->aaaEapNoReq = true;
1419 return;
1420 }
1421
1422 msg = sm->last_recv_radius;
1423
1424 eap = radius_msg_get_eap(msg);
1425 if (!eap) {
1426 /* RFC 3579, Chap. 2.6.3:
1427 * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
1428 * attribute */
1429 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1430 HOSTAPD_LEVEL_WARNING,
1431 "could not extract EAP-Message from RADIUS message");
1432 sm->eap_if->aaaEapNoReq = true;
1433 return;
1434 }
1435
1436 if (wpabuf_len(eap) < sizeof(*hdr)) {
1437 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1438 HOSTAPD_LEVEL_WARNING,
1439 "too short EAP packet received from authentication server");
1440 wpabuf_free(eap);
1441 sm->eap_if->aaaEapNoReq = true;
1442 return;
1443 }
1444
1445 if (wpabuf_len(eap) > sizeof(*hdr))
1446 eap_type = (wpabuf_head_u8(eap))[sizeof(*hdr)];
1447
1448 hdr = wpabuf_head(eap);
1449 switch (hdr->code) {
1450 case EAP_CODE_REQUEST:
1451 if (eap_type >= 0)
1452 sm->eap_type_authsrv = eap_type;
1453 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
1454 eap_server_get_name(0, eap_type), eap_type);
1455 break;
1456 case EAP_CODE_RESPONSE:
1457 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
1458 eap_server_get_name(0, eap_type), eap_type);
1459 break;
1460 case EAP_CODE_SUCCESS:
1461 os_strlcpy(buf, "EAP Success", sizeof(buf));
1462 break;
1463 case EAP_CODE_FAILURE:
1464 os_strlcpy(buf, "EAP Failure", sizeof(buf));
1465 break;
1466 default:
1467 os_strlcpy(buf, "unknown EAP code", sizeof(buf));
1468 break;
1469 }
1470 buf[sizeof(buf) - 1] = '\0';
1471 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1472 HOSTAPD_LEVEL_DEBUG,
1473 "decapsulated EAP packet (code=%d id=%d len=%d) from RADIUS server: %s",
1474 hdr->code, hdr->identifier, be_to_host16(hdr->length),
1475 buf);
1476 sm->eap_if->aaaEapReq = true;
1477
1478 wpabuf_free(sm->eap_if->aaaEapReqData);
1479 sm->eap_if->aaaEapReqData = eap;
1480 }
1481
1482
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)1483 static void ieee802_1x_get_keys(struct hostapd_data *hapd,
1484 struct sta_info *sta, struct radius_msg *msg,
1485 struct radius_msg *req,
1486 const u8 *shared_secret,
1487 size_t shared_secret_len)
1488 {
1489 struct radius_ms_mppe_keys *keys;
1490 u8 *buf;
1491 size_t len;
1492 struct eapol_state_machine *sm = sta->eapol_sm;
1493
1494 if (!sm)
1495 return;
1496
1497 keys = radius_msg_get_ms_keys(msg, req, shared_secret,
1498 shared_secret_len);
1499
1500 if (keys && keys->send && keys->recv) {
1501 len = keys->send_len + keys->recv_len;
1502 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Send-Key",
1503 keys->send, keys->send_len);
1504 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Recv-Key",
1505 keys->recv, keys->recv_len);
1506
1507 os_free(sm->eap_if->aaaEapKeyData);
1508 sm->eap_if->aaaEapKeyData = os_malloc(len);
1509 if (sm->eap_if->aaaEapKeyData) {
1510 os_memcpy(sm->eap_if->aaaEapKeyData, keys->recv,
1511 keys->recv_len);
1512 os_memcpy(sm->eap_if->aaaEapKeyData + keys->recv_len,
1513 keys->send, keys->send_len);
1514 sm->eap_if->aaaEapKeyDataLen = len;
1515 sm->eap_if->aaaEapKeyAvailable = true;
1516 }
1517 } else {
1518 wpa_printf(MSG_DEBUG,
1519 "MS-MPPE: 1x_get_keys, could not get keys: %p send: %p recv: %p",
1520 keys, keys ? keys->send : NULL,
1521 keys ? keys->recv : NULL);
1522 }
1523
1524 if (keys) {
1525 os_free(keys->send);
1526 os_free(keys->recv);
1527 os_free(keys);
1528 }
1529
1530 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_EAP_KEY_NAME, &buf, &len,
1531 NULL) == 0) {
1532 os_free(sm->eap_if->eapSessionId);
1533 sm->eap_if->eapSessionId = os_memdup(buf, len);
1534 if (sm->eap_if->eapSessionId) {
1535 sm->eap_if->eapSessionIdLen = len;
1536 wpa_hexdump(MSG_DEBUG, "EAP-Key Name",
1537 sm->eap_if->eapSessionId,
1538 sm->eap_if->eapSessionIdLen);
1539 }
1540 } else {
1541 sm->eap_if->eapSessionIdLen = 0;
1542 }
1543 }
1544
1545
ieee802_1x_store_radius_class(struct hostapd_data * hapd,struct sta_info * sta,struct radius_msg * msg)1546 static void ieee802_1x_store_radius_class(struct hostapd_data *hapd,
1547 struct sta_info *sta,
1548 struct radius_msg *msg)
1549 {
1550 u8 *attr_class;
1551 size_t class_len;
1552 struct eapol_state_machine *sm = sta->eapol_sm;
1553 int count, i;
1554 struct radius_attr_data *nclass;
1555 size_t nclass_count;
1556
1557 if (!hapd->conf->radius->acct_server || !hapd->radius || !sm)
1558 return;
1559
1560 radius_free_class(&sm->radius_class);
1561 count = radius_msg_count_attr(msg, RADIUS_ATTR_CLASS, 1);
1562 if (count <= 0)
1563 return;
1564
1565 nclass = os_calloc(count, sizeof(struct radius_attr_data));
1566 if (!nclass)
1567 return;
1568
1569 nclass_count = 0;
1570
1571 attr_class = NULL;
1572 for (i = 0; i < count; i++) {
1573 do {
1574 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CLASS,
1575 &attr_class, &class_len,
1576 attr_class) < 0) {
1577 i = count;
1578 break;
1579 }
1580 } while (class_len < 1);
1581
1582 nclass[nclass_count].data = os_memdup(attr_class, class_len);
1583 if (!nclass[nclass_count].data)
1584 break;
1585
1586 nclass[nclass_count].len = class_len;
1587 nclass_count++;
1588 }
1589
1590 sm->radius_class.attr = nclass;
1591 sm->radius_class.count = nclass_count;
1592 wpa_printf(MSG_DEBUG,
1593 "IEEE 802.1X: Stored %lu RADIUS Class attributes for "
1594 MACSTR,
1595 (unsigned long) sm->radius_class.count,
1596 MAC2STR(sta->addr));
1597 }
1598
1599
1600 /* 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)1601 static void ieee802_1x_update_sta_identity(struct hostapd_data *hapd,
1602 struct sta_info *sta,
1603 struct radius_msg *msg)
1604 {
1605 u8 *buf, *identity;
1606 size_t len;
1607 struct eapol_state_machine *sm = sta->eapol_sm;
1608
1609 if (!sm)
1610 return;
1611
1612 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &buf, &len,
1613 NULL) < 0)
1614 return;
1615
1616 identity = (u8 *) dup_binstr(buf, len);
1617 if (!identity)
1618 return;
1619
1620 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1621 HOSTAPD_LEVEL_DEBUG,
1622 "old identity '%s' updated with User-Name from Access-Accept '%s'",
1623 sm->identity ? (char *) sm->identity : "N/A",
1624 (char *) identity);
1625
1626 os_free(sm->identity);
1627 sm->identity = identity;
1628 sm->identity_len = len;
1629 }
1630
1631
1632 /* 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)1633 static void ieee802_1x_update_sta_cui(struct hostapd_data *hapd,
1634 struct sta_info *sta,
1635 struct radius_msg *msg)
1636 {
1637 struct eapol_state_machine *sm = sta->eapol_sm;
1638 struct wpabuf *cui;
1639 u8 *buf;
1640 size_t len;
1641
1642 if (!sm)
1643 return;
1644
1645 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
1646 &buf, &len, NULL) < 0)
1647 return;
1648
1649 cui = wpabuf_alloc_copy(buf, len);
1650 if (!cui)
1651 return;
1652
1653 wpabuf_free(sm->radius_cui);
1654 sm->radius_cui = cui;
1655 }
1656
1657
1658 #ifdef CONFIG_HS20
1659
ieee802_1x_hs20_sub_rem(struct sta_info * sta,u8 * pos,size_t len)1660 static void ieee802_1x_hs20_sub_rem(struct sta_info *sta, u8 *pos, size_t len)
1661 {
1662 sta->remediation = 1;
1663 os_free(sta->remediation_url);
1664 if (len > 2) {
1665 sta->remediation_url = os_malloc(len);
1666 if (!sta->remediation_url)
1667 return;
1668 sta->remediation_method = pos[0];
1669 os_memcpy(sta->remediation_url, pos + 1, len - 1);
1670 sta->remediation_url[len - 1] = '\0';
1671 wpa_printf(MSG_DEBUG,
1672 "HS 2.0: Subscription remediation needed for "
1673 MACSTR " - server method %u URL %s",
1674 MAC2STR(sta->addr), sta->remediation_method,
1675 sta->remediation_url);
1676 } else {
1677 sta->remediation_url = NULL;
1678 wpa_printf(MSG_DEBUG,
1679 "HS 2.0: Subscription remediation needed for "
1680 MACSTR, MAC2STR(sta->addr));
1681 }
1682 /* TODO: assign the STA into remediation VLAN or add filtering */
1683 }
1684
1685
ieee802_1x_hs20_deauth_req(struct hostapd_data * hapd,struct sta_info * sta,u8 * pos,size_t len)1686 static void ieee802_1x_hs20_deauth_req(struct hostapd_data *hapd,
1687 struct sta_info *sta, u8 *pos,
1688 size_t len)
1689 {
1690 if (len < 3)
1691 return; /* Malformed information */
1692 sta->hs20_deauth_requested = 1;
1693 wpa_printf(MSG_DEBUG,
1694 "HS 2.0: Deauthentication request - Code %u Re-auth Delay %u",
1695 *pos, WPA_GET_LE16(pos + 1));
1696 wpabuf_free(sta->hs20_deauth_req);
1697 sta->hs20_deauth_req = wpabuf_alloc(len + 1);
1698 if (sta->hs20_deauth_req) {
1699 wpabuf_put_data(sta->hs20_deauth_req, pos, 3);
1700 wpabuf_put_u8(sta->hs20_deauth_req, len - 3);
1701 wpabuf_put_data(sta->hs20_deauth_req, pos + 3, len - 3);
1702 }
1703 ap_sta_session_timeout(hapd, sta, hapd->conf->hs20_deauth_req_timeout);
1704 }
1705
1706
ieee802_1x_hs20_session_info(struct hostapd_data * hapd,struct sta_info * sta,u8 * pos,size_t len,int session_timeout)1707 static void ieee802_1x_hs20_session_info(struct hostapd_data *hapd,
1708 struct sta_info *sta, u8 *pos,
1709 size_t len, int session_timeout)
1710 {
1711 unsigned int swt;
1712 int warning_time, beacon_int;
1713
1714 if (len < 1)
1715 return; /* Malformed information */
1716 os_free(sta->hs20_session_info_url);
1717 sta->hs20_session_info_url = os_malloc(len);
1718 if (!sta->hs20_session_info_url)
1719 return;
1720 swt = pos[0];
1721 os_memcpy(sta->hs20_session_info_url, pos + 1, len - 1);
1722 sta->hs20_session_info_url[len - 1] = '\0';
1723 wpa_printf(MSG_DEBUG,
1724 "HS 2.0: Session Information URL='%s' SWT=%u (session_timeout=%d)",
1725 sta->hs20_session_info_url, swt, session_timeout);
1726 if (session_timeout < 0) {
1727 wpa_printf(MSG_DEBUG,
1728 "HS 2.0: No Session-Timeout set - ignore session info URL");
1729 return;
1730 }
1731 if (swt == 255)
1732 swt = 1; /* Use one minute as the AP selected value */
1733
1734 if ((unsigned int) session_timeout < swt * 60)
1735 warning_time = 0;
1736 else
1737 warning_time = session_timeout - swt * 60;
1738
1739 beacon_int = hapd->iconf->beacon_int;
1740 if (beacon_int < 1)
1741 beacon_int = 100; /* best guess */
1742 sta->hs20_disassoc_timer = swt * 60 * 1000 / beacon_int * 125 / 128;
1743 if (sta->hs20_disassoc_timer > 65535)
1744 sta->hs20_disassoc_timer = 65535;
1745
1746 ap_sta_session_warning_timeout(hapd, sta, warning_time);
1747 }
1748
1749
ieee802_1x_hs20_t_c_filtering(struct hostapd_data * hapd,struct sta_info * sta,u8 * pos,size_t len)1750 static void ieee802_1x_hs20_t_c_filtering(struct hostapd_data *hapd,
1751 struct sta_info *sta, u8 *pos,
1752 size_t len)
1753 {
1754 if (len < 4)
1755 return; /* Malformed information */
1756 wpa_printf(MSG_DEBUG,
1757 "HS 2.0: Terms and Conditions filtering %02x %02x %02x %02x",
1758 pos[0], pos[1], pos[2], pos[3]);
1759 hs20_t_c_filtering(hapd, sta, pos[0] & BIT(0));
1760 }
1761
1762
ieee802_1x_hs20_t_c_url(struct hostapd_data * hapd,struct sta_info * sta,u8 * pos,size_t len)1763 static void ieee802_1x_hs20_t_c_url(struct hostapd_data *hapd,
1764 struct sta_info *sta, u8 *pos, size_t len)
1765 {
1766 os_free(sta->t_c_url);
1767 sta->t_c_url = os_malloc(len + 1);
1768 if (!sta->t_c_url)
1769 return;
1770 os_memcpy(sta->t_c_url, pos, len);
1771 sta->t_c_url[len] = '\0';
1772 wpa_printf(MSG_DEBUG,
1773 "HS 2.0: Terms and Conditions URL %s", sta->t_c_url);
1774 }
1775
1776 #endif /* CONFIG_HS20 */
1777
1778
ieee802_1x_check_hs20(struct hostapd_data * hapd,struct sta_info * sta,struct radius_msg * msg,int session_timeout)1779 static void ieee802_1x_check_hs20(struct hostapd_data *hapd,
1780 struct sta_info *sta,
1781 struct radius_msg *msg,
1782 int session_timeout)
1783 {
1784 #ifdef CONFIG_HS20
1785 u8 *buf, *pos, *end, type, sublen;
1786 size_t len;
1787
1788 buf = NULL;
1789 sta->remediation = 0;
1790 sta->hs20_deauth_requested = 0;
1791
1792 for (;;) {
1793 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_VENDOR_SPECIFIC,
1794 &buf, &len, buf) < 0)
1795 break;
1796 if (len < 6)
1797 continue;
1798 pos = buf;
1799 end = buf + len;
1800 if (WPA_GET_BE32(pos) != RADIUS_VENDOR_ID_WFA)
1801 continue;
1802 pos += 4;
1803
1804 type = *pos++;
1805 sublen = *pos++;
1806 if (sublen < 2)
1807 continue; /* invalid length */
1808 sublen -= 2; /* skip header */
1809 if (pos + sublen > end)
1810 continue; /* invalid WFA VSA */
1811
1812 switch (type) {
1813 case RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION:
1814 ieee802_1x_hs20_sub_rem(sta, pos, sublen);
1815 break;
1816 case RADIUS_VENDOR_ATTR_WFA_HS20_DEAUTH_REQ:
1817 ieee802_1x_hs20_deauth_req(hapd, sta, pos, sublen);
1818 break;
1819 case RADIUS_VENDOR_ATTR_WFA_HS20_SESSION_INFO_URL:
1820 ieee802_1x_hs20_session_info(hapd, sta, pos, sublen,
1821 session_timeout);
1822 break;
1823 case RADIUS_VENDOR_ATTR_WFA_HS20_T_C_FILTERING:
1824 ieee802_1x_hs20_t_c_filtering(hapd, sta, pos, sublen);
1825 break;
1826 case RADIUS_VENDOR_ATTR_WFA_HS20_T_C_URL:
1827 ieee802_1x_hs20_t_c_url(hapd, sta, pos, sublen);
1828 break;
1829 }
1830 }
1831 #endif /* CONFIG_HS20 */
1832 }
1833
1834
1835 struct sta_id_search {
1836 u8 identifier;
1837 struct eapol_state_machine *sm;
1838 };
1839
1840
ieee802_1x_select_radius_identifier(struct hostapd_data * hapd,struct sta_info * sta,void * ctx)1841 static int ieee802_1x_select_radius_identifier(struct hostapd_data *hapd,
1842 struct sta_info *sta,
1843 void *ctx)
1844 {
1845 struct sta_id_search *id_search = ctx;
1846 struct eapol_state_machine *sm = sta->eapol_sm;
1847
1848 if (sm && sm->radius_identifier >= 0 &&
1849 sm->radius_identifier == id_search->identifier) {
1850 id_search->sm = sm;
1851 return 1;
1852 }
1853 return 0;
1854 }
1855
1856
1857 static struct eapol_state_machine *
ieee802_1x_search_radius_identifier(struct hostapd_data * hapd,u8 identifier)1858 ieee802_1x_search_radius_identifier(struct hostapd_data *hapd, u8 identifier)
1859 {
1860 struct sta_id_search id_search;
1861
1862 id_search.identifier = identifier;
1863 id_search.sm = NULL;
1864 ap_for_each_sta(hapd, ieee802_1x_select_radius_identifier, &id_search);
1865 return id_search.sm;
1866 }
1867
1868
1869 #ifndef CONFIG_NO_VLAN
ieee802_1x_update_vlan(struct radius_msg * msg,struct hostapd_data * hapd,struct sta_info * sta)1870 static int ieee802_1x_update_vlan(struct radius_msg *msg,
1871 struct hostapd_data *hapd,
1872 struct sta_info *sta)
1873 {
1874 struct vlan_description vlan_desc;
1875
1876 os_memset(&vlan_desc, 0, sizeof(vlan_desc));
1877 vlan_desc.notempty = !!radius_msg_get_vlanid(msg, &vlan_desc.untagged,
1878 MAX_NUM_TAGGED_VLAN,
1879 vlan_desc.tagged);
1880
1881 if (vlan_desc.notempty &&
1882 !hostapd_vlan_valid(hapd->conf->vlan, &vlan_desc)) {
1883 sta->eapol_sm->authFail = true;
1884 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
1885 HOSTAPD_LEVEL_INFO,
1886 "Invalid VLAN %d%s received from RADIUS server",
1887 vlan_desc.untagged,
1888 vlan_desc.tagged[0] ? "+" : "");
1889 os_memset(&vlan_desc, 0, sizeof(vlan_desc));
1890 ap_sta_set_vlan(hapd, sta, &vlan_desc);
1891 return -1;
1892 }
1893
1894 if (hapd->conf->ssid.dynamic_vlan == DYNAMIC_VLAN_REQUIRED &&
1895 !vlan_desc.notempty) {
1896 sta->eapol_sm->authFail = true;
1897 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1898 HOSTAPD_LEVEL_INFO,
1899 "authentication server did not include required VLAN ID in Access-Accept");
1900 return -1;
1901 }
1902
1903 return ap_sta_set_vlan(hapd, sta, &vlan_desc);
1904 }
1905 #endif /* CONFIG_NO_VLAN */
1906
1907
1908 /**
1909 * ieee802_1x_receive_auth - Process RADIUS frames from Authentication Server
1910 * @msg: RADIUS response message
1911 * @req: RADIUS request message
1912 * @shared_secret: RADIUS shared secret
1913 * @shared_secret_len: Length of shared_secret in octets
1914 * @data: Context data (struct hostapd_data *)
1915 * Returns: Processing status
1916 */
1917 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)1918 ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
1919 const u8 *shared_secret, size_t shared_secret_len,
1920 void *data)
1921 {
1922 struct hostapd_data *hapd = data;
1923 struct sta_info *sta;
1924 u32 session_timeout = 0, termination_action, acct_interim_interval;
1925 int session_timeout_set;
1926 u32 reason_code;
1927 struct eapol_state_machine *sm;
1928 int override_eapReq = 0;
1929 struct radius_hdr *hdr = radius_msg_get_hdr(msg);
1930
1931 sm = ieee802_1x_search_radius_identifier(hapd, hdr->identifier);
1932 if (!sm) {
1933 wpa_printf(MSG_DEBUG,
1934 "IEEE 802.1X: Could not find matching station for this RADIUS message");
1935 return RADIUS_RX_UNKNOWN;
1936 }
1937 sta = sm->sta;
1938
1939 /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
1940 * present when packet contains an EAP-Message attribute */
1941 if (hdr->code == RADIUS_CODE_ACCESS_REJECT &&
1942 radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
1943 0) < 0 &&
1944 radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
1945 wpa_printf(MSG_DEBUG,
1946 "Allowing RADIUS Access-Reject without Message-Authenticator since it does not include EAP-Message");
1947 } else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
1948 req, 1)) {
1949 wpa_printf(MSG_INFO,
1950 "Incoming RADIUS packet did not have correct Message-Authenticator - dropped");
1951 return RADIUS_RX_INVALID_AUTHENTICATOR;
1952 }
1953
1954 if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
1955 hdr->code != RADIUS_CODE_ACCESS_REJECT &&
1956 hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
1957 wpa_printf(MSG_INFO, "Unknown RADIUS message code");
1958 return RADIUS_RX_UNKNOWN;
1959 }
1960
1961 sm->radius_identifier = -1;
1962 wpa_printf(MSG_DEBUG, "RADIUS packet matching with station " MACSTR,
1963 MAC2STR(sta->addr));
1964
1965 radius_msg_free(sm->last_recv_radius);
1966 sm->last_recv_radius = msg;
1967
1968 session_timeout_set =
1969 !radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
1970 &session_timeout);
1971 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_TERMINATION_ACTION,
1972 &termination_action))
1973 termination_action = RADIUS_TERMINATION_ACTION_DEFAULT;
1974
1975 if (hapd->conf->acct_interim_interval == 0 &&
1976 hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
1977 radius_msg_get_attr_int32(msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
1978 &acct_interim_interval) == 0) {
1979 if (acct_interim_interval < 60) {
1980 hostapd_logger(hapd, sta->addr,
1981 HOSTAPD_MODULE_IEEE8021X,
1982 HOSTAPD_LEVEL_INFO,
1983 "ignored too small Acct-Interim-Interval %d",
1984 acct_interim_interval);
1985 } else
1986 sta->acct_interim_interval = acct_interim_interval;
1987 }
1988
1989
1990 switch (hdr->code) {
1991 case RADIUS_CODE_ACCESS_ACCEPT:
1992 #ifndef CONFIG_NO_VLAN
1993 if (hapd->conf->ssid.dynamic_vlan != DYNAMIC_VLAN_DISABLED &&
1994 ieee802_1x_update_vlan(msg, hapd, sta) < 0)
1995 break;
1996
1997 if (sta->vlan_id > 0) {
1998 hostapd_logger(hapd, sta->addr,
1999 HOSTAPD_MODULE_RADIUS,
2000 HOSTAPD_LEVEL_INFO,
2001 "VLAN ID %d", sta->vlan_id);
2002 }
2003
2004 if ((sta->flags & WLAN_STA_ASSOC) &&
2005 ap_sta_bind_vlan(hapd, sta) < 0)
2006 break;
2007 #endif /* CONFIG_NO_VLAN */
2008
2009 sta->session_timeout_set = !!session_timeout_set;
2010 os_get_reltime(&sta->session_timeout);
2011 sta->session_timeout.sec += session_timeout;
2012
2013 /* RFC 3580, Ch. 3.17 */
2014 if (session_timeout_set && termination_action ==
2015 RADIUS_TERMINATION_ACTION_RADIUS_REQUEST)
2016 sm->reAuthPeriod = session_timeout;
2017 else if (session_timeout_set)
2018 ap_sta_session_timeout(hapd, sta, session_timeout);
2019 else
2020 ap_sta_no_session_timeout(hapd, sta);
2021
2022 sm->eap_if->aaaSuccess = true;
2023 override_eapReq = 1;
2024 ieee802_1x_get_keys(hapd, sta, msg, req, shared_secret,
2025 shared_secret_len);
2026 ieee802_1x_store_radius_class(hapd, sta, msg);
2027 ieee802_1x_update_sta_identity(hapd, sta, msg);
2028 ieee802_1x_update_sta_cui(hapd, sta, msg);
2029 ieee802_1x_check_hs20(hapd, sta, msg,
2030 session_timeout_set ?
2031 (int) session_timeout : -1);
2032 break;
2033 case RADIUS_CODE_ACCESS_REJECT:
2034 sm->eap_if->aaaFail = true;
2035 override_eapReq = 1;
2036 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_WLAN_REASON_CODE,
2037 &reason_code) == 0) {
2038 wpa_printf(MSG_DEBUG,
2039 "RADIUS server indicated WLAN-Reason-Code %u in Access-Reject for "
2040 MACSTR, reason_code, MAC2STR(sta->addr));
2041 sta->disconnect_reason_code = reason_code;
2042 }
2043 break;
2044 case RADIUS_CODE_ACCESS_CHALLENGE:
2045 sm->eap_if->aaaEapReq = true;
2046 if (session_timeout_set) {
2047 /* RFC 2869, Ch. 2.3.2; RFC 3580, Ch. 3.17 */
2048 sm->eap_if->aaaMethodTimeout = session_timeout;
2049 hostapd_logger(hapd, sm->addr,
2050 HOSTAPD_MODULE_IEEE8021X,
2051 HOSTAPD_LEVEL_DEBUG,
2052 "using EAP timeout of %d seconds (from RADIUS)",
2053 sm->eap_if->aaaMethodTimeout);
2054 } else {
2055 /*
2056 * Use dynamic retransmission behavior per EAP
2057 * specification.
2058 */
2059 sm->eap_if->aaaMethodTimeout = 0;
2060 }
2061 break;
2062 }
2063
2064 ieee802_1x_decapsulate_radius(hapd, sta);
2065 if (override_eapReq)
2066 sm->eap_if->aaaEapReq = false;
2067
2068 #ifdef CONFIG_FILS
2069 #ifdef NEED_AP_MLME
2070 if (sta->flags &
2071 (WLAN_STA_PENDING_FILS_ERP | WLAN_STA_PENDING_PASN_FILS_ERP)) {
2072 /* TODO: Add a PMKSA entry on success? */
2073 ieee802_11_finish_fils_auth(
2074 hapd, sta, hdr->code == RADIUS_CODE_ACCESS_ACCEPT,
2075 sm->eap_if->aaaEapReqData,
2076 sm->eap_if->aaaEapKeyData,
2077 sm->eap_if->aaaEapKeyDataLen);
2078 }
2079 #endif /* NEED_AP_MLME */
2080 #endif /* CONFIG_FILS */
2081
2082 eapol_auth_step(sm);
2083
2084 return RADIUS_RX_QUEUED;
2085 }
2086 #endif /* CONFIG_NO_RADIUS */
2087
2088
ieee802_1x_abort_auth(struct hostapd_data * hapd,struct sta_info * sta)2089 void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta)
2090 {
2091 struct eapol_state_machine *sm = sta->eapol_sm;
2092
2093 if (!sm)
2094 return;
2095
2096 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
2097 HOSTAPD_LEVEL_DEBUG, "aborting authentication");
2098
2099 #ifndef CONFIG_NO_RADIUS
2100 radius_msg_free(sm->last_recv_radius);
2101 sm->last_recv_radius = NULL;
2102 #endif /* CONFIG_NO_RADIUS */
2103
2104 if (sm->eap_if->eapTimeout) {
2105 /*
2106 * Disconnect the STA since it did not reply to the last EAP
2107 * request and we cannot continue EAP processing (EAP-Failure
2108 * could only be sent if the EAP peer actually replied).
2109 */
2110 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "EAP Timeout, STA " MACSTR,
2111 MAC2STR(sta->addr));
2112
2113 sm->eap_if->portEnabled = false;
2114 ap_sta_disconnect(hapd, sta, sta->addr,
2115 WLAN_REASON_PREV_AUTH_NOT_VALID);
2116 }
2117 }
2118
2119
2120 #ifdef CONFIG_WEP
2121
ieee802_1x_rekey_broadcast(struct hostapd_data * hapd)2122 static int ieee802_1x_rekey_broadcast(struct hostapd_data *hapd)
2123 {
2124 struct eapol_authenticator *eapol = hapd->eapol_auth;
2125
2126 if (hapd->conf->default_wep_key_len < 1)
2127 return 0;
2128
2129 os_free(eapol->default_wep_key);
2130 eapol->default_wep_key = os_malloc(hapd->conf->default_wep_key_len);
2131 if (!eapol->default_wep_key ||
2132 random_get_bytes(eapol->default_wep_key,
2133 hapd->conf->default_wep_key_len)) {
2134 wpa_printf(MSG_INFO, "Could not generate random WEP key");
2135 os_free(eapol->default_wep_key);
2136 eapol->default_wep_key = NULL;
2137 return -1;
2138 }
2139
2140 wpa_hexdump_key(MSG_DEBUG, "IEEE 802.1X: New default WEP key",
2141 eapol->default_wep_key,
2142 hapd->conf->default_wep_key_len);
2143
2144 return 0;
2145 }
2146
2147
ieee802_1x_sta_key_available(struct hostapd_data * hapd,struct sta_info * sta,void * ctx)2148 static int ieee802_1x_sta_key_available(struct hostapd_data *hapd,
2149 struct sta_info *sta, void *ctx)
2150 {
2151 if (sta->eapol_sm) {
2152 sta->eapol_sm->eap_if->eapKeyAvailable = true;
2153 eapol_auth_step(sta->eapol_sm);
2154 }
2155 return 0;
2156 }
2157
2158
ieee802_1x_rekey(void * eloop_ctx,void * timeout_ctx)2159 static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx)
2160 {
2161 struct hostapd_data *hapd = eloop_ctx;
2162 struct eapol_authenticator *eapol = hapd->eapol_auth;
2163
2164 if (eapol->default_wep_key_idx >= 3)
2165 eapol->default_wep_key_idx =
2166 hapd->conf->individual_wep_key_len > 0 ? 1 : 0;
2167 else
2168 eapol->default_wep_key_idx++;
2169
2170 wpa_printf(MSG_DEBUG, "IEEE 802.1X: New default WEP key index %d",
2171 eapol->default_wep_key_idx);
2172
2173 if (ieee802_1x_rekey_broadcast(hapd)) {
2174 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
2175 HOSTAPD_LEVEL_WARNING,
2176 "failed to generate a new broadcast key");
2177 os_free(eapol->default_wep_key);
2178 eapol->default_wep_key = NULL;
2179 return;
2180 }
2181
2182 /* TODO: Could setup key for RX here, but change default TX keyid only
2183 * after new broadcast key has been sent to all stations. */
2184 if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
2185 broadcast_ether_addr,
2186 eapol->default_wep_key_idx, 0, 1, NULL, 0,
2187 eapol->default_wep_key,
2188 hapd->conf->default_wep_key_len,
2189 KEY_FLAG_GROUP_RX_TX_DEFAULT)) {
2190 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
2191 HOSTAPD_LEVEL_WARNING,
2192 "failed to configure a new broadcast key");
2193 os_free(eapol->default_wep_key);
2194 eapol->default_wep_key = NULL;
2195 return;
2196 }
2197
2198 ap_for_each_sta(hapd, ieee802_1x_sta_key_available, NULL);
2199
2200 if (hapd->conf->wep_rekeying_period > 0) {
2201 eloop_register_timeout(hapd->conf->wep_rekeying_period, 0,
2202 ieee802_1x_rekey, hapd, NULL);
2203 }
2204 }
2205
2206 #endif /* CONFIG_WEP */
2207
2208
ieee802_1x_eapol_send(void * ctx,void * sta_ctx,u8 type,const u8 * data,size_t datalen)2209 static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type,
2210 const u8 *data, size_t datalen)
2211 {
2212 #ifdef CONFIG_WPS
2213 struct sta_info *sta = sta_ctx;
2214
2215 if ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) ==
2216 WLAN_STA_MAYBE_WPS) {
2217 const u8 *identity;
2218 size_t identity_len;
2219 struct eapol_state_machine *sm = sta->eapol_sm;
2220
2221 identity = eap_get_identity(sm->eap, &identity_len);
2222 if (identity &&
2223 ((identity_len == WSC_ID_ENROLLEE_LEN &&
2224 os_memcmp(identity, WSC_ID_ENROLLEE,
2225 WSC_ID_ENROLLEE_LEN) == 0) ||
2226 (identity_len == WSC_ID_REGISTRAR_LEN &&
2227 os_memcmp(identity, WSC_ID_REGISTRAR,
2228 WSC_ID_REGISTRAR_LEN) == 0))) {
2229 wpa_printf(MSG_DEBUG,
2230 "WPS: WLAN_STA_MAYBE_WPS -> WLAN_STA_WPS");
2231 sta->flags |= WLAN_STA_WPS;
2232 }
2233 }
2234 #endif /* CONFIG_WPS */
2235
2236 ieee802_1x_send(ctx, sta_ctx, type, data, datalen);
2237 }
2238
2239
ieee802_1x_aaa_send(void * ctx,void * sta_ctx,const u8 * data,size_t datalen)2240 static void ieee802_1x_aaa_send(void *ctx, void *sta_ctx,
2241 const u8 *data, size_t datalen)
2242 {
2243 #ifndef CONFIG_NO_RADIUS
2244 struct hostapd_data *hapd = ctx;
2245 struct sta_info *sta = sta_ctx;
2246
2247 ieee802_1x_encapsulate_radius(hapd, sta, data, datalen);
2248 #endif /* CONFIG_NO_RADIUS */
2249 }
2250
2251
_ieee802_1x_finished(void * ctx,void * sta_ctx,int success,int preauth,int remediation)2252 static void _ieee802_1x_finished(void *ctx, void *sta_ctx, int success,
2253 int preauth, int remediation)
2254 {
2255 struct hostapd_data *hapd = ctx;
2256 struct sta_info *sta = sta_ctx;
2257
2258 if (preauth)
2259 rsn_preauth_finished(hapd, sta, success);
2260 else
2261 ieee802_1x_finished(hapd, sta, success, remediation);
2262 }
2263
2264
ieee802_1x_get_eap_user(void * ctx,const u8 * identity,size_t identity_len,int phase2,struct eap_user * user)2265 static int ieee802_1x_get_eap_user(void *ctx, const u8 *identity,
2266 size_t identity_len, int phase2,
2267 struct eap_user *user)
2268 {
2269 struct hostapd_data *hapd = ctx;
2270 const struct hostapd_eap_user *eap_user;
2271 int i;
2272 int rv = -1;
2273
2274 eap_user = hostapd_get_eap_user(hapd, identity, identity_len, phase2);
2275 if (!eap_user)
2276 goto out;
2277
2278 os_memset(user, 0, sizeof(*user));
2279 user->phase2 = phase2;
2280 for (i = 0; i < EAP_MAX_METHODS; i++) {
2281 user->methods[i].vendor = eap_user->methods[i].vendor;
2282 user->methods[i].method = eap_user->methods[i].method;
2283 }
2284
2285 if (eap_user->password) {
2286 user->password = os_memdup(eap_user->password,
2287 eap_user->password_len);
2288 if (!user->password)
2289 goto out;
2290 user->password_len = eap_user->password_len;
2291 user->password_hash = eap_user->password_hash;
2292 if (eap_user->salt && eap_user->salt_len) {
2293 user->salt = os_memdup(eap_user->salt,
2294 eap_user->salt_len);
2295 if (!user->salt)
2296 goto out;
2297 user->salt_len = eap_user->salt_len;
2298 }
2299 }
2300 user->force_version = eap_user->force_version;
2301 user->macacl = eap_user->macacl;
2302 user->ttls_auth = eap_user->ttls_auth;
2303 user->remediation = eap_user->remediation;
2304 rv = 0;
2305
2306 out:
2307 if (rv)
2308 wpa_printf(MSG_DEBUG, "%s: Failed to find user", __func__);
2309
2310 return rv;
2311 }
2312
2313
ieee802_1x_sta_entry_alive(void * ctx,const u8 * addr)2314 static int ieee802_1x_sta_entry_alive(void *ctx, const u8 *addr)
2315 {
2316 struct hostapd_data *hapd = ctx;
2317 struct sta_info *sta;
2318
2319 sta = ap_get_sta(hapd, addr);
2320 if (!sta || !sta->eapol_sm)
2321 return 0;
2322 return 1;
2323 }
2324
2325
ieee802_1x_logger(void * ctx,const u8 * addr,eapol_logger_level level,const char * txt)2326 static void ieee802_1x_logger(void *ctx, const u8 *addr,
2327 eapol_logger_level level, const char *txt)
2328 {
2329 #ifndef CONFIG_NO_HOSTAPD_LOGGER
2330 struct hostapd_data *hapd = ctx;
2331 int hlevel;
2332
2333 switch (level) {
2334 case EAPOL_LOGGER_WARNING:
2335 hlevel = HOSTAPD_LEVEL_WARNING;
2336 break;
2337 case EAPOL_LOGGER_INFO:
2338 hlevel = HOSTAPD_LEVEL_INFO;
2339 break;
2340 case EAPOL_LOGGER_DEBUG:
2341 default:
2342 hlevel = HOSTAPD_LEVEL_DEBUG;
2343 break;
2344 }
2345
2346 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE8021X, hlevel, "%s",
2347 txt);
2348 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
2349 }
2350
2351
ieee802_1x_set_port_authorized(void * ctx,void * sta_ctx,int authorized)2352 static void ieee802_1x_set_port_authorized(void *ctx, void *sta_ctx,
2353 int authorized)
2354 {
2355 struct hostapd_data *hapd = ctx;
2356 struct sta_info *sta = sta_ctx;
2357
2358 ieee802_1x_set_sta_authorized(hapd, sta, authorized);
2359 }
2360
2361
_ieee802_1x_abort_auth(void * ctx,void * sta_ctx)2362 static void _ieee802_1x_abort_auth(void *ctx, void *sta_ctx)
2363 {
2364 struct hostapd_data *hapd = ctx;
2365 struct sta_info *sta = sta_ctx;
2366
2367 ieee802_1x_abort_auth(hapd, sta);
2368 }
2369
2370
2371 #ifdef CONFIG_WEP
_ieee802_1x_tx_key(void * ctx,void * sta_ctx)2372 static void _ieee802_1x_tx_key(void *ctx, void *sta_ctx)
2373 {
2374 #ifndef CONFIG_FIPS
2375 #ifndef CONFIG_NO_RC4
2376 struct hostapd_data *hapd = ctx;
2377 struct sta_info *sta = sta_ctx;
2378
2379 ieee802_1x_tx_key(hapd, sta);
2380 #endif /* CONFIG_NO_RC4 */
2381 #endif /* CONFIG_FIPS */
2382 }
2383 #endif /* CONFIG_WEP */
2384
2385
ieee802_1x_eapol_event(void * ctx,void * sta_ctx,enum eapol_event type)2386 static void ieee802_1x_eapol_event(void *ctx, void *sta_ctx,
2387 enum eapol_event type)
2388 {
2389 /* struct hostapd_data *hapd = ctx; */
2390 struct sta_info *sta = sta_ctx;
2391
2392 switch (type) {
2393 case EAPOL_AUTH_SM_CHANGE:
2394 wpa_auth_sm_notify(sta->wpa_sm);
2395 break;
2396 case EAPOL_AUTH_REAUTHENTICATE:
2397 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
2398 break;
2399 }
2400 }
2401
2402
2403 #ifdef CONFIG_ERP
2404
2405 static struct eap_server_erp_key *
ieee802_1x_erp_get_key(void * ctx,const char * keyname)2406 ieee802_1x_erp_get_key(void *ctx, const char *keyname)
2407 {
2408 struct hostapd_data *hapd = ctx;
2409 struct eap_server_erp_key *erp;
2410
2411 dl_list_for_each(erp, &hapd->erp_keys, struct eap_server_erp_key,
2412 list) {
2413 if (os_strcmp(erp->keyname_nai, keyname) == 0)
2414 return erp;
2415 }
2416
2417 return NULL;
2418 }
2419
2420
ieee802_1x_erp_add_key(void * ctx,struct eap_server_erp_key * erp)2421 static int ieee802_1x_erp_add_key(void *ctx, struct eap_server_erp_key *erp)
2422 {
2423 struct hostapd_data *hapd = ctx;
2424
2425 dl_list_add(&hapd->erp_keys, &erp->list);
2426 return 0;
2427 }
2428
2429 #endif /* CONFIG_ERP */
2430
2431
ieee802_1x_init(struct hostapd_data * hapd)2432 int ieee802_1x_init(struct hostapd_data *hapd)
2433 {
2434 struct eapol_auth_config conf;
2435 struct eapol_auth_cb cb;
2436
2437 dl_list_init(&hapd->erp_keys);
2438
2439 os_memset(&conf, 0, sizeof(conf));
2440 conf.eap_cfg = hapd->eap_cfg;
2441 conf.ctx = hapd;
2442 conf.eap_reauth_period = hapd->conf->eap_reauth_period;
2443 conf.wpa = hapd->conf->wpa;
2444 #ifdef CONFIG_WEP
2445 conf.individual_wep_key_len = hapd->conf->individual_wep_key_len;
2446 #endif /* CONFIG_WEP */
2447 conf.eap_req_id_text = hapd->conf->eap_req_id_text;
2448 conf.eap_req_id_text_len = hapd->conf->eap_req_id_text_len;
2449 conf.erp_send_reauth_start = hapd->conf->erp_send_reauth_start;
2450 conf.erp_domain = hapd->conf->erp_domain;
2451
2452 os_memset(&cb, 0, sizeof(cb));
2453 cb.eapol_send = ieee802_1x_eapol_send;
2454 cb.aaa_send = ieee802_1x_aaa_send;
2455 cb.finished = _ieee802_1x_finished;
2456 cb.get_eap_user = ieee802_1x_get_eap_user;
2457 cb.sta_entry_alive = ieee802_1x_sta_entry_alive;
2458 cb.logger = ieee802_1x_logger;
2459 cb.set_port_authorized = ieee802_1x_set_port_authorized;
2460 cb.abort_auth = _ieee802_1x_abort_auth;
2461 #ifdef CONFIG_WEP
2462 cb.tx_key = _ieee802_1x_tx_key;
2463 #endif /* CONFIG_WEP */
2464 cb.eapol_event = ieee802_1x_eapol_event;
2465 #ifdef CONFIG_ERP
2466 cb.erp_get_key = ieee802_1x_erp_get_key;
2467 cb.erp_add_key = ieee802_1x_erp_add_key;
2468 #endif /* CONFIG_ERP */
2469
2470 hapd->eapol_auth = eapol_auth_init(&conf, &cb);
2471 if (!hapd->eapol_auth)
2472 return -1;
2473
2474 if ((hapd->conf->ieee802_1x || hapd->conf->wpa) &&
2475 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1))
2476 return -1;
2477
2478 #ifndef CONFIG_NO_RADIUS
2479 if (radius_client_register(hapd->radius, RADIUS_AUTH,
2480 ieee802_1x_receive_auth, hapd))
2481 return -1;
2482 #endif /* CONFIG_NO_RADIUS */
2483
2484 #ifdef CONFIG_WEP
2485 if (hapd->conf->default_wep_key_len) {
2486 int i;
2487
2488 for (i = 0; i < 4; i++)
2489 hostapd_drv_set_key(hapd->conf->iface, hapd,
2490 WPA_ALG_NONE, NULL, i, 0, 0, NULL,
2491 0, NULL, 0, KEY_FLAG_GROUP);
2492
2493 ieee802_1x_rekey(hapd, NULL);
2494
2495 if (!hapd->eapol_auth->default_wep_key)
2496 return -1;
2497 }
2498 #endif /* CONFIG_WEP */
2499
2500 return 0;
2501 }
2502
2503
ieee802_1x_erp_flush(struct hostapd_data * hapd)2504 void ieee802_1x_erp_flush(struct hostapd_data *hapd)
2505 {
2506 struct eap_server_erp_key *erp;
2507
2508 while ((erp = dl_list_first(&hapd->erp_keys, struct eap_server_erp_key,
2509 list)) != NULL) {
2510 dl_list_del(&erp->list);
2511 bin_clear_free(erp, sizeof(*erp));
2512 }
2513 }
2514
2515
ieee802_1x_deinit(struct hostapd_data * hapd)2516 void ieee802_1x_deinit(struct hostapd_data *hapd)
2517 {
2518 #ifdef CONFIG_WEP
2519 eloop_cancel_timeout(ieee802_1x_rekey, hapd, NULL);
2520 #endif /* CONFIG_WEP */
2521
2522 if (hapd->driver && hapd->drv_priv &&
2523 (hapd->conf->ieee802_1x || hapd->conf->wpa))
2524 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
2525
2526 eapol_auth_deinit(hapd->eapol_auth);
2527 hapd->eapol_auth = NULL;
2528
2529 ieee802_1x_erp_flush(hapd);
2530 }
2531
2532
ieee802_1x_tx_status(struct hostapd_data * hapd,struct sta_info * sta,const u8 * buf,size_t len,int ack)2533 int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
2534 const u8 *buf, size_t len, int ack)
2535 {
2536 struct ieee80211_hdr *hdr;
2537 u8 *pos;
2538 const unsigned char rfc1042_hdr[ETH_ALEN] =
2539 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
2540
2541 if (!sta)
2542 return -1;
2543 if (len < sizeof(*hdr) + sizeof(rfc1042_hdr) + 2)
2544 return 0;
2545
2546 hdr = (struct ieee80211_hdr *) buf;
2547 pos = (u8 *) (hdr + 1);
2548 if (os_memcmp(pos, rfc1042_hdr, sizeof(rfc1042_hdr)) != 0)
2549 return 0;
2550 pos += sizeof(rfc1042_hdr);
2551 if (WPA_GET_BE16(pos) != ETH_P_PAE)
2552 return 0;
2553 pos += 2;
2554
2555 return ieee802_1x_eapol_tx_status(hapd, sta, pos, buf + len - pos,
2556 ack);
2557 }
2558
2559
ieee802_1x_eapol_tx_status(struct hostapd_data * hapd,struct sta_info * sta,const u8 * buf,int len,int ack)2560 int ieee802_1x_eapol_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
2561 const u8 *buf, int len, int ack)
2562 {
2563 const struct ieee802_1x_hdr *xhdr =
2564 (const struct ieee802_1x_hdr *) buf;
2565 const u8 *pos = buf + sizeof(*xhdr);
2566 struct ieee802_1x_eapol_key *key;
2567
2568 if (len < (int) sizeof(*xhdr))
2569 return 0;
2570 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
2571 " TX status - version=%d type=%d length=%d - ack=%d",
2572 MAC2STR(sta->addr), xhdr->version, xhdr->type,
2573 be_to_host16(xhdr->length), ack);
2574
2575 #ifdef CONFIG_WPS
2576 if (xhdr->type == IEEE802_1X_TYPE_EAP_PACKET && ack &&
2577 (sta->flags & WLAN_STA_WPS) &&
2578 ap_sta_pending_delayed_1x_auth_fail_disconnect(hapd, sta)) {
2579 wpa_printf(MSG_DEBUG,
2580 "WPS: Indicate EAP completion on ACK for EAP-Failure");
2581 hostapd_wps_eap_completed(hapd);
2582 }
2583 #endif /* CONFIG_WPS */
2584
2585 if (xhdr->type != IEEE802_1X_TYPE_EAPOL_KEY)
2586 return 0;
2587
2588 if (pos + sizeof(struct wpa_eapol_key) <= buf + len) {
2589 const struct wpa_eapol_key *wpa;
2590
2591 wpa = (const struct wpa_eapol_key *) pos;
2592 if (wpa->type == EAPOL_KEY_TYPE_RSN ||
2593 wpa->type == EAPOL_KEY_TYPE_WPA)
2594 wpa_auth_eapol_key_tx_status(hapd->wpa_auth,
2595 sta->wpa_sm, ack);
2596 }
2597
2598 /* EAPOL EAP-Packet packets are eventually re-sent by either Supplicant
2599 * or Authenticator state machines, but EAPOL-Key packets are not
2600 * retransmitted in case of failure. Try to re-send failed EAPOL-Key
2601 * packets couple of times because otherwise STA keys become
2602 * unsynchronized with AP. */
2603 if (!ack && pos + sizeof(*key) <= buf + len) {
2604 key = (struct ieee802_1x_eapol_key *) pos;
2605 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
2606 HOSTAPD_LEVEL_DEBUG,
2607 "did not Ack EAPOL-Key frame (%scast index=%d)",
2608 key->key_index & BIT(7) ? "uni" : "broad",
2609 key->key_index & ~BIT(7));
2610 /* TODO: re-send EAPOL-Key couple of times (with short delay
2611 * between them?). If all attempt fail, report error and
2612 * deauthenticate STA so that it will get new keys when
2613 * authenticating again (e.g., after returning in range).
2614 * Separate limit/transmit state needed both for unicast and
2615 * broadcast keys(?) */
2616 }
2617 /* TODO: could move unicast key configuration from ieee802_1x_tx_key()
2618 * to here and change the key only if the EAPOL-Key packet was Acked.
2619 */
2620
2621 return 1;
2622 }
2623
2624
ieee802_1x_get_identity(struct eapol_state_machine * sm,size_t * len)2625 u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len)
2626 {
2627 if (!sm || !sm->identity)
2628 return NULL;
2629
2630 *len = sm->identity_len;
2631 return sm->identity;
2632 }
2633
2634
ieee802_1x_get_radius_class(struct eapol_state_machine * sm,size_t * len,int idx)2635 u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len,
2636 int idx)
2637 {
2638 if (!sm || !sm->radius_class.attr ||
2639 idx >= (int) sm->radius_class.count)
2640 return NULL;
2641
2642 *len = sm->radius_class.attr[idx].len;
2643 return sm->radius_class.attr[idx].data;
2644 }
2645
2646
ieee802_1x_get_radius_cui(struct eapol_state_machine * sm)2647 struct wpabuf * ieee802_1x_get_radius_cui(struct eapol_state_machine *sm)
2648 {
2649 if (!sm)
2650 return NULL;
2651 return sm->radius_cui;
2652 }
2653
2654
ieee802_1x_get_key(struct eapol_state_machine * sm,size_t * len)2655 const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len)
2656 {
2657 *len = 0;
2658 if (!sm)
2659 return NULL;
2660
2661 *len = sm->eap_if->eapKeyDataLen;
2662 return sm->eap_if->eapKeyData;
2663 }
2664
2665
2666 #ifdef CONFIG_MACSEC
ieee802_1x_get_session_id(struct eapol_state_machine * sm,size_t * len)2667 const u8 * ieee802_1x_get_session_id(struct eapol_state_machine *sm,
2668 size_t *len)
2669 {
2670 *len = 0;
2671 if (!sm || !sm->eap_if)
2672 return NULL;
2673
2674 *len = sm->eap_if->eapSessionIdLen;
2675 return sm->eap_if->eapSessionId;
2676 }
2677 #endif /* CONFIG_MACSEC */
2678
2679
ieee802_1x_notify_port_enabled(struct eapol_state_machine * sm,bool enabled)2680 void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm,
2681 bool enabled)
2682 {
2683 if (!sm)
2684 return;
2685 sm->eap_if->portEnabled = enabled;
2686 eapol_auth_step(sm);
2687 }
2688
2689
ieee802_1x_notify_port_valid(struct eapol_state_machine * sm,bool valid)2690 void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm, bool valid)
2691 {
2692 if (!sm)
2693 return;
2694 sm->portValid = valid;
2695 eapol_auth_step(sm);
2696 }
2697
2698
ieee802_1x_notify_pre_auth(struct eapol_state_machine * sm,bool pre_auth)2699 void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, bool pre_auth)
2700 {
2701 if (!sm)
2702 return;
2703 if (pre_auth)
2704 sm->flags |= EAPOL_SM_PREAUTH;
2705 else
2706 sm->flags &= ~EAPOL_SM_PREAUTH;
2707 }
2708
2709
bool_txt(bool val)2710 static const char * bool_txt(bool val)
2711 {
2712 return val ? "TRUE" : "FALSE";
2713 }
2714
2715
ieee802_1x_get_mib(struct hostapd_data * hapd,char * buf,size_t buflen)2716 int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
2717 {
2718 /* TODO */
2719 return 0;
2720 }
2721
2722
ieee802_1x_get_mib_sta(struct hostapd_data * hapd,struct sta_info * sta,char * buf,size_t buflen)2723 int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
2724 char *buf, size_t buflen)
2725 {
2726 int len = 0, ret;
2727 struct eapol_state_machine *sm = sta->eapol_sm;
2728 struct os_reltime diff;
2729 const char *name1;
2730 const char *name2;
2731 char *identity_buf = NULL;
2732
2733 if (!sm)
2734 return 0;
2735
2736 ret = os_snprintf(buf + len, buflen - len,
2737 "dot1xPaePortNumber=%d\n"
2738 "dot1xPaePortProtocolVersion=%d\n"
2739 "dot1xPaePortCapabilities=1\n"
2740 "dot1xPaePortInitialize=%d\n"
2741 "dot1xPaePortReauthenticate=FALSE\n",
2742 sta->aid,
2743 EAPOL_VERSION,
2744 sm->initialize);
2745 if (os_snprintf_error(buflen - len, ret))
2746 return len;
2747 len += ret;
2748
2749 /* dot1xAuthConfigTable */
2750 ret = os_snprintf(buf + len, buflen - len,
2751 "dot1xAuthPaeState=%d\n"
2752 "dot1xAuthBackendAuthState=%d\n"
2753 "dot1xAuthAdminControlledDirections=%d\n"
2754 "dot1xAuthOperControlledDirections=%d\n"
2755 "dot1xAuthAuthControlledPortStatus=%d\n"
2756 "dot1xAuthAuthControlledPortControl=%d\n"
2757 "dot1xAuthQuietPeriod=%u\n"
2758 "dot1xAuthServerTimeout=%u\n"
2759 "dot1xAuthReAuthPeriod=%u\n"
2760 "dot1xAuthReAuthEnabled=%s\n"
2761 "dot1xAuthKeyTxEnabled=%s\n",
2762 sm->auth_pae_state + 1,
2763 sm->be_auth_state + 1,
2764 sm->adminControlledDirections,
2765 sm->operControlledDirections,
2766 sm->authPortStatus,
2767 sm->portControl,
2768 sm->quietPeriod,
2769 sm->serverTimeout,
2770 sm->reAuthPeriod,
2771 bool_txt(sm->reAuthEnabled),
2772 bool_txt(sm->keyTxEnabled));
2773 if (os_snprintf_error(buflen - len, ret))
2774 return len;
2775 len += ret;
2776
2777 /* dot1xAuthStatsTable */
2778 ret = os_snprintf(buf + len, buflen - len,
2779 "dot1xAuthEapolFramesRx=%u\n"
2780 "dot1xAuthEapolFramesTx=%u\n"
2781 "dot1xAuthEapolStartFramesRx=%u\n"
2782 "dot1xAuthEapolLogoffFramesRx=%u\n"
2783 "dot1xAuthEapolRespIdFramesRx=%u\n"
2784 "dot1xAuthEapolRespFramesRx=%u\n"
2785 "dot1xAuthEapolReqIdFramesTx=%u\n"
2786 "dot1xAuthEapolReqFramesTx=%u\n"
2787 "dot1xAuthInvalidEapolFramesRx=%u\n"
2788 "dot1xAuthEapLengthErrorFramesRx=%u\n"
2789 "dot1xAuthLastEapolFrameVersion=%u\n"
2790 "dot1xAuthLastEapolFrameSource=" MACSTR "\n",
2791 sm->dot1xAuthEapolFramesRx,
2792 sm->dot1xAuthEapolFramesTx,
2793 sm->dot1xAuthEapolStartFramesRx,
2794 sm->dot1xAuthEapolLogoffFramesRx,
2795 sm->dot1xAuthEapolRespIdFramesRx,
2796 sm->dot1xAuthEapolRespFramesRx,
2797 sm->dot1xAuthEapolReqIdFramesTx,
2798 sm->dot1xAuthEapolReqFramesTx,
2799 sm->dot1xAuthInvalidEapolFramesRx,
2800 sm->dot1xAuthEapLengthErrorFramesRx,
2801 sm->dot1xAuthLastEapolFrameVersion,
2802 MAC2STR(sm->addr));
2803 if (os_snprintf_error(buflen - len, ret))
2804 return len;
2805 len += ret;
2806
2807 /* dot1xAuthDiagTable */
2808 ret = os_snprintf(buf + len, buflen - len,
2809 "dot1xAuthEntersConnecting=%u\n"
2810 "dot1xAuthEapLogoffsWhileConnecting=%u\n"
2811 "dot1xAuthEntersAuthenticating=%u\n"
2812 "dot1xAuthAuthSuccessesWhileAuthenticating=%u\n"
2813 "dot1xAuthAuthTimeoutsWhileAuthenticating=%u\n"
2814 "dot1xAuthAuthFailWhileAuthenticating=%u\n"
2815 "dot1xAuthAuthEapStartsWhileAuthenticating=%u\n"
2816 "dot1xAuthAuthEapLogoffWhileAuthenticating=%u\n"
2817 "dot1xAuthAuthReauthsWhileAuthenticated=%u\n"
2818 "dot1xAuthAuthEapStartsWhileAuthenticated=%u\n"
2819 "dot1xAuthAuthEapLogoffWhileAuthenticated=%u\n"
2820 "dot1xAuthBackendResponses=%u\n"
2821 "dot1xAuthBackendAccessChallenges=%u\n"
2822 "dot1xAuthBackendOtherRequestsToSupplicant=%u\n"
2823 "dot1xAuthBackendAuthSuccesses=%u\n"
2824 "dot1xAuthBackendAuthFails=%u\n",
2825 sm->authEntersConnecting,
2826 sm->authEapLogoffsWhileConnecting,
2827 sm->authEntersAuthenticating,
2828 sm->authAuthSuccessesWhileAuthenticating,
2829 sm->authAuthTimeoutsWhileAuthenticating,
2830 sm->authAuthFailWhileAuthenticating,
2831 sm->authAuthEapStartsWhileAuthenticating,
2832 sm->authAuthEapLogoffWhileAuthenticating,
2833 sm->authAuthReauthsWhileAuthenticated,
2834 sm->authAuthEapStartsWhileAuthenticated,
2835 sm->authAuthEapLogoffWhileAuthenticated,
2836 sm->backendResponses,
2837 sm->backendAccessChallenges,
2838 sm->backendOtherRequestsToSupplicant,
2839 sm->backendAuthSuccesses,
2840 sm->backendAuthFails);
2841 if (os_snprintf_error(buflen - len, ret))
2842 return len;
2843 len += ret;
2844
2845 /* dot1xAuthSessionStatsTable */
2846 os_reltime_age(&sta->acct_session_start, &diff);
2847 if (sm->eap && !sm->identity) {
2848 const u8 *id;
2849 size_t id_len;
2850
2851 id = eap_get_identity(sm->eap, &id_len);
2852 if (id)
2853 identity_buf = dup_binstr(id, id_len);
2854 }
2855 ret = os_snprintf(buf + len, buflen - len,
2856 /* TODO: dot1xAuthSessionOctetsRx */
2857 /* TODO: dot1xAuthSessionOctetsTx */
2858 /* TODO: dot1xAuthSessionFramesRx */
2859 /* TODO: dot1xAuthSessionFramesTx */
2860 "dot1xAuthSessionId=%016llX\n"
2861 "dot1xAuthSessionAuthenticMethod=%d\n"
2862 "dot1xAuthSessionTime=%u\n"
2863 "dot1xAuthSessionTerminateCause=999\n"
2864 "dot1xAuthSessionUserName=%s\n",
2865 (unsigned long long) sta->acct_session_id,
2866 (wpa_key_mgmt_wpa_ieee8021x(
2867 wpa_auth_sta_key_mgmt(sta->wpa_sm))) ?
2868 1 : 2,
2869 (unsigned int) diff.sec,
2870 sm->identity ? (char *) sm->identity :
2871 (identity_buf ? identity_buf : "N/A"));
2872 os_free(identity_buf);
2873 if (os_snprintf_error(buflen - len, ret))
2874 return len;
2875 len += ret;
2876
2877 if (sm->acct_multi_session_id) {
2878 ret = os_snprintf(buf + len, buflen - len,
2879 "authMultiSessionId=%016llX\n",
2880 (unsigned long long)
2881 sm->acct_multi_session_id);
2882 if (os_snprintf_error(buflen - len, ret))
2883 return len;
2884 len += ret;
2885 }
2886
2887 name1 = eap_server_get_name(0, sm->eap_type_authsrv);
2888 name2 = eap_server_get_name(0, sm->eap_type_supp);
2889 ret = os_snprintf(buf + len, buflen - len,
2890 "last_eap_type_as=%d (%s)\n"
2891 "last_eap_type_sta=%d (%s)\n",
2892 sm->eap_type_authsrv, name1,
2893 sm->eap_type_supp, name2);
2894 if (os_snprintf_error(buflen - len, ret))
2895 return len;
2896 len += ret;
2897
2898 return len;
2899 }
2900
2901
2902 #ifdef CONFIG_HS20
ieee802_1x_wnm_notif_send(void * eloop_ctx,void * timeout_ctx)2903 static void ieee802_1x_wnm_notif_send(void *eloop_ctx, void *timeout_ctx)
2904 {
2905 struct hostapd_data *hapd = eloop_ctx;
2906 struct sta_info *sta = timeout_ctx;
2907
2908 if (sta->remediation) {
2909 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2910 MACSTR " to indicate Subscription Remediation",
2911 MAC2STR(sta->addr));
2912 hs20_send_wnm_notification(hapd, sta->addr,
2913 sta->remediation_method,
2914 sta->remediation_url);
2915 os_free(sta->remediation_url);
2916 sta->remediation_url = NULL;
2917 }
2918
2919 if (sta->hs20_deauth_req) {
2920 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2921 MACSTR " to indicate imminent deauthentication",
2922 MAC2STR(sta->addr));
2923 hs20_send_wnm_notification_deauth_req(hapd, sta->addr,
2924 sta->hs20_deauth_req);
2925 }
2926
2927 if (sta->hs20_t_c_filtering) {
2928 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2929 MACSTR " to indicate Terms and Conditions filtering",
2930 MAC2STR(sta->addr));
2931 hs20_send_wnm_notification_t_c(hapd, sta->addr, sta->t_c_url);
2932 os_free(sta->t_c_url);
2933 sta->t_c_url = NULL;
2934 }
2935 }
2936 #endif /* CONFIG_HS20 */
2937
2938
ieee802_1x_finished(struct hostapd_data * hapd,struct sta_info * sta,int success,int remediation)2939 static void ieee802_1x_finished(struct hostapd_data *hapd,
2940 struct sta_info *sta, int success,
2941 int remediation)
2942 {
2943 const u8 *key;
2944 size_t len;
2945 /* TODO: get PMKLifetime from WPA parameters */
2946 static const int dot11RSNAConfigPMKLifetime = 43200;
2947 unsigned int session_timeout;
2948 struct os_reltime now, remaining;
2949
2950 #ifdef CONFIG_HS20
2951 if (remediation && !sta->remediation) {
2952 sta->remediation = 1;
2953 os_free(sta->remediation_url);
2954 sta->remediation_url =
2955 os_strdup(hapd->conf->subscr_remediation_url);
2956 sta->remediation_method = 1; /* SOAP-XML SPP */
2957 }
2958
2959 if (success && (sta->remediation || sta->hs20_deauth_req ||
2960 sta->hs20_t_c_filtering)) {
2961 wpa_printf(MSG_DEBUG, "HS 2.0: Schedule WNM-Notification to "
2962 MACSTR " in 100 ms", MAC2STR(sta->addr));
2963 eloop_cancel_timeout(ieee802_1x_wnm_notif_send, hapd, sta);
2964 eloop_register_timeout(0, 100000, ieee802_1x_wnm_notif_send,
2965 hapd, sta);
2966 }
2967 #endif /* CONFIG_HS20 */
2968
2969 #ifdef CONFIG_MACSEC
2970 ieee802_1x_notify_create_actor_hapd(hapd, sta);
2971 #endif /* CONFIG_MACSEC */
2972
2973 key = ieee802_1x_get_key(sta->eapol_sm, &len);
2974 if (sta->session_timeout_set) {
2975 os_get_reltime(&now);
2976 os_reltime_sub(&sta->session_timeout, &now, &remaining);
2977 session_timeout = (remaining.sec > 0) ? remaining.sec : 1;
2978 } else {
2979 session_timeout = dot11RSNAConfigPMKLifetime;
2980 }
2981 if (success && key && len >= PMK_LEN && !sta->remediation &&
2982 !sta->hs20_deauth_requested &&
2983 wpa_auth_pmksa_add(sta->wpa_sm, key, len, session_timeout,
2984 sta->eapol_sm) == 0) {
2985 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
2986 HOSTAPD_LEVEL_DEBUG,
2987 "Added PMKSA cache entry (IEEE 802.1X)");
2988 }
2989
2990 if (!success) {
2991 /*
2992 * Many devices require deauthentication after WPS provisioning
2993 * and some may not be be able to do that themselves, so
2994 * disconnect the client here. In addition, this may also
2995 * benefit IEEE 802.1X/EAPOL authentication cases, too since
2996 * the EAPOL PAE state machine would remain in HELD state for
2997 * considerable amount of time and some EAP methods, like
2998 * EAP-FAST with anonymous provisioning, may require another
2999 * EAPOL authentication to be started to complete connection.
3000 */
3001 ap_sta_delayed_1x_auth_fail_disconnect(hapd, sta);
3002 }
3003 }
3004
