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 bool ieee802_1x_finished(struct hostapd_data *hapd,
47 struct sta_info *sta, int success,
48 int remediation, bool logoff);
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,enum frame_encryption encrypted)1000 static void ieee802_1x_save_eapol(struct sta_info *sta, const u8 *buf,
1001 size_t len, enum frame_encryption encrypted)
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 sta->pending_eapol_rx->encrypted = encrypted;
1020 os_get_reltime(&sta->pending_eapol_rx->rx_time);
1021 }
1022
1023
ieee802_1x_check_encryption(struct sta_info * sta,enum frame_encryption encrypted,u8 type)1024 static bool ieee802_1x_check_encryption(struct sta_info *sta,
1025 enum frame_encryption encrypted,
1026 u8 type)
1027 {
1028 if (encrypted != FRAME_NOT_ENCRYPTED)
1029 return true;
1030 if (type != IEEE802_1X_TYPE_EAP_PACKET &&
1031 type != IEEE802_1X_TYPE_EAPOL_START &&
1032 type != IEEE802_1X_TYPE_EAPOL_LOGOFF)
1033 return true;
1034 if (!(sta->flags & WLAN_STA_MFP))
1035 return true;
1036 return !wpa_auth_pairwise_set(sta->wpa_sm);
1037 }
1038
1039
1040 /**
1041 * ieee802_1x_receive - Process the EAPOL frames from the Supplicant
1042 * @hapd: hostapd BSS data
1043 * @sa: Source address (sender of the EAPOL frame)
1044 * @buf: EAPOL frame
1045 * @len: Length of buf in octets
1046 * @encrypted: Whether the frame was encrypted
1047 *
1048 * This function is called for each incoming EAPOL frame from the interface
1049 */
ieee802_1x_receive(struct hostapd_data * hapd,const u8 * sa,const u8 * buf,size_t len,enum frame_encryption encrypted)1050 void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf,
1051 size_t len, enum frame_encryption encrypted)
1052 {
1053 struct sta_info *sta;
1054 struct ieee802_1x_hdr *hdr;
1055 struct ieee802_1x_eapol_key *key;
1056 u16 datalen;
1057 struct rsn_pmksa_cache_entry *pmksa;
1058 int key_mgmt;
1059
1060 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen &&
1061 !hapd->conf->wps_state)
1062 return;
1063
1064 wpa_printf(MSG_DEBUG, "IEEE 802.1X: %lu bytes from " MACSTR
1065 " (encrypted=%d)",
1066 (unsigned long) len, MAC2STR(sa), encrypted);
1067 sta = ap_get_sta(hapd, sa);
1068 if (!sta || (!(sta->flags & (WLAN_STA_ASSOC | WLAN_STA_PREAUTH)) &&
1069 !(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED))) {
1070 wpa_printf(MSG_DEBUG,
1071 "IEEE 802.1X data frame from not associated/Pre-authenticating STA");
1072
1073 if (sta && (sta->flags & WLAN_STA_AUTH)) {
1074 wpa_printf(MSG_DEBUG, "Saving EAPOL frame from " MACSTR
1075 " for later use", MAC2STR(sta->addr));
1076 ieee802_1x_save_eapol(sta, buf, len, encrypted);
1077 }
1078
1079 return;
1080 }
1081
1082 if (len < sizeof(*hdr)) {
1083 wpa_printf(MSG_INFO, " too short IEEE 802.1X packet");
1084 return;
1085 }
1086
1087 hdr = (struct ieee802_1x_hdr *) buf;
1088 datalen = be_to_host16(hdr->length);
1089 wpa_printf(MSG_DEBUG, " IEEE 802.1X: version=%d type=%d length=%d",
1090 hdr->version, hdr->type, datalen);
1091
1092 if (len - sizeof(*hdr) < datalen) {
1093 wpa_printf(MSG_INFO,
1094 " frame too short for this IEEE 802.1X packet");
1095 if (sta->eapol_sm)
1096 sta->eapol_sm->dot1xAuthEapLengthErrorFramesRx++;
1097 return;
1098 }
1099 if (len - sizeof(*hdr) > datalen) {
1100 wpa_printf(MSG_DEBUG,
1101 " ignoring %lu extra octets after IEEE 802.1X packet",
1102 (unsigned long) len - sizeof(*hdr) - datalen);
1103 }
1104
1105 if (sta->eapol_sm) {
1106 sta->eapol_sm->dot1xAuthLastEapolFrameVersion = hdr->version;
1107 sta->eapol_sm->dot1xAuthEapolFramesRx++;
1108 }
1109
1110 key = (struct ieee802_1x_eapol_key *) (hdr + 1);
1111 if (datalen >= sizeof(struct ieee802_1x_eapol_key) &&
1112 hdr->type == IEEE802_1X_TYPE_EAPOL_KEY &&
1113 (key->type == EAPOL_KEY_TYPE_WPA ||
1114 key->type == EAPOL_KEY_TYPE_RSN)) {
1115 wpa_receive(hapd->wpa_auth, sta->wpa_sm, (u8 *) hdr,
1116 sizeof(*hdr) + datalen);
1117 return;
1118 }
1119
1120 if (!hapd->conf->ieee802_1x && !hapd->conf->osen &&
1121 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
1122 wpa_printf(MSG_DEBUG,
1123 "IEEE 802.1X: Ignore EAPOL message - 802.1X not enabled and WPS not used");
1124 return;
1125 }
1126
1127 key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
1128 if (key_mgmt != -1 &&
1129 (wpa_key_mgmt_wpa_psk(key_mgmt) || key_mgmt == WPA_KEY_MGMT_OWE ||
1130 key_mgmt == WPA_KEY_MGMT_DPP)) {
1131 wpa_printf(MSG_DEBUG,
1132 "IEEE 802.1X: Ignore EAPOL message - STA is using PSK");
1133 return;
1134 }
1135
1136 if (!ieee802_1x_check_encryption(sta, encrypted, hdr->type)) {
1137 wpa_printf(MSG_DEBUG,
1138 "IEEE 802.1X: Discard unencrypted EAPOL message - encryption was expected");
1139 return;
1140 }
1141
1142 if (!sta->eapol_sm) {
1143 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
1144 if (!sta->eapol_sm)
1145 return;
1146
1147 #ifdef CONFIG_WPS
1148 if (!hapd->conf->ieee802_1x && hapd->conf->wps_state) {
1149 u32 wflags = sta->flags & (WLAN_STA_WPS |
1150 WLAN_STA_WPS2 |
1151 WLAN_STA_MAYBE_WPS);
1152 if (wflags == WLAN_STA_MAYBE_WPS ||
1153 wflags == (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) {
1154 /*
1155 * Delay EAPOL frame transmission until a
1156 * possible WPS STA initiates the handshake
1157 * with EAPOL-Start. Only allow the wait to be
1158 * skipped if the STA is known to support WPS
1159 * 2.0.
1160 */
1161 wpa_printf(MSG_DEBUG,
1162 "WPS: Do not start EAPOL until EAPOL-Start is received");
1163 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
1164 }
1165 }
1166 #endif /* CONFIG_WPS */
1167
1168 sta->eapol_sm->eap_if->portEnabled = true;
1169 }
1170
1171 /* since we support version 1, we can ignore version field and proceed
1172 * as specified in version 1 standard [IEEE Std 802.1X-2001, 7.5.5] */
1173 /* TODO: actually, we are not version 1 anymore.. However, Version 2
1174 * does not change frame contents, so should be ok to process frames
1175 * more or less identically. Some changes might be needed for
1176 * verification of fields. */
1177
1178 switch (hdr->type) {
1179 case IEEE802_1X_TYPE_EAP_PACKET:
1180 handle_eap(hapd, sta, (u8 *) (hdr + 1), datalen);
1181 break;
1182
1183 case IEEE802_1X_TYPE_EAPOL_START:
1184 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1185 HOSTAPD_LEVEL_DEBUG,
1186 "received EAPOL-Start from STA");
1187 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
1188 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
1189 if (pmksa) {
1190 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
1191 HOSTAPD_LEVEL_DEBUG,
1192 "cached PMKSA available - ignore it since STA sent EAPOL-Start");
1193 wpa_auth_sta_clear_pmksa(sta->wpa_sm, pmksa);
1194 }
1195 sta->eapol_sm->eapolStart = true;
1196 sta->eapol_sm->dot1xAuthEapolStartFramesRx++;
1197 eap_server_clear_identity(sta->eapol_sm->eap);
1198 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
1199 break;
1200
1201 case IEEE802_1X_TYPE_EAPOL_LOGOFF:
1202 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1203 HOSTAPD_LEVEL_DEBUG,
1204 "received EAPOL-Logoff from STA");
1205 sta->acct_terminate_cause =
1206 RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1207 accounting_sta_stop(hapd, sta);
1208 sta->eapol_sm->eapolLogoff = true;
1209 sta->eapol_sm->dot1xAuthEapolLogoffFramesRx++;
1210 eap_server_clear_identity(sta->eapol_sm->eap);
1211 break;
1212
1213 case IEEE802_1X_TYPE_EAPOL_KEY:
1214 wpa_printf(MSG_DEBUG, " EAPOL-Key");
1215 if (!ap_sta_is_authorized(sta)) {
1216 wpa_printf(MSG_DEBUG,
1217 " Dropped key data from unauthorized Supplicant");
1218 break;
1219 }
1220 break;
1221
1222 case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT:
1223 wpa_printf(MSG_DEBUG, " EAPOL-Encapsulated-ASF-Alert");
1224 /* TODO: implement support for this; show data */
1225 break;
1226
1227 #ifdef CONFIG_MACSEC
1228 case IEEE802_1X_TYPE_EAPOL_MKA:
1229 wpa_printf(MSG_EXCESSIVE,
1230 "EAPOL type %d will be handled by MKA", hdr->type);
1231 break;
1232 #endif /* CONFIG_MACSEC */
1233
1234 default:
1235 wpa_printf(MSG_DEBUG, " unknown IEEE 802.1X packet type");
1236 sta->eapol_sm->dot1xAuthInvalidEapolFramesRx++;
1237 break;
1238 }
1239
1240 eapol_auth_step(sta->eapol_sm);
1241 }
1242
1243
1244 /**
1245 * ieee802_1x_new_station - Start IEEE 802.1X authentication
1246 * @hapd: hostapd BSS data
1247 * @sta: The station
1248 *
1249 * This function is called to start IEEE 802.1X authentication when a new
1250 * station completes IEEE 802.11 association.
1251 */
ieee802_1x_new_station(struct hostapd_data * hapd,struct sta_info * sta)1252 void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta)
1253 {
1254 struct rsn_pmksa_cache_entry *pmksa;
1255 int reassoc = 1;
1256 int force_1x = 0;
1257 int key_mgmt;
1258
1259 #ifdef CONFIG_WPS
1260 if (hapd->conf->wps_state &&
1261 ((hapd->conf->wpa && (sta->flags & WLAN_STA_MAYBE_WPS)) ||
1262 (sta->flags & WLAN_STA_WPS))) {
1263 /*
1264 * Need to enable IEEE 802.1X/EAPOL state machines for possible
1265 * WPS handshake even if IEEE 802.1X/EAPOL is not used for
1266 * authentication in this BSS.
1267 */
1268 force_1x = 1;
1269 }
1270 #endif /* CONFIG_WPS */
1271
1272 if (!force_1x && !hapd->conf->ieee802_1x && !hapd->conf->osen) {
1273 wpa_printf(MSG_DEBUG,
1274 "IEEE 802.1X: Ignore STA - 802.1X not enabled or forced for WPS");
1275 /*
1276 * Clear any possible EAPOL authenticator state to support
1277 * reassociation change from WPS to PSK.
1278 */
1279 ieee802_1x_free_station(hapd, sta);
1280 return;
1281 }
1282
1283 key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
1284 if (key_mgmt != -1 &&
1285 (wpa_key_mgmt_wpa_psk(key_mgmt) || key_mgmt == WPA_KEY_MGMT_OWE ||
1286 key_mgmt == WPA_KEY_MGMT_DPP)) {
1287 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - using PSK");
1288 /*
1289 * Clear any possible EAPOL authenticator state to support
1290 * reassociation change from WPA-EAP to PSK.
1291 */
1292 ieee802_1x_free_station(hapd, sta);
1293 return;
1294 }
1295
1296 if (!sta->eapol_sm) {
1297 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1298 HOSTAPD_LEVEL_DEBUG, "start authentication");
1299 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
1300 if (!sta->eapol_sm) {
1301 hostapd_logger(hapd, sta->addr,
1302 HOSTAPD_MODULE_IEEE8021X,
1303 HOSTAPD_LEVEL_INFO,
1304 "failed to allocate state machine");
1305 return;
1306 }
1307 reassoc = 0;
1308 }
1309
1310 #ifdef CONFIG_WPS
1311 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
1312 if (!hapd->conf->ieee802_1x && hapd->conf->wps_state &&
1313 !(sta->flags & WLAN_STA_WPS2)) {
1314 /*
1315 * Delay EAPOL frame transmission until a possible WPS STA
1316 * initiates the handshake with EAPOL-Start. Only allow the
1317 * wait to be skipped if the STA is known to support WPS 2.0.
1318 */
1319 wpa_printf(MSG_DEBUG,
1320 "WPS: Do not start EAPOL until EAPOL-Start is received");
1321 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
1322 }
1323 #endif /* CONFIG_WPS */
1324
1325 sta->eapol_sm->eap_if->portEnabled = true;
1326
1327 #ifdef CONFIG_IEEE80211R_AP
1328 if (sta->auth_alg == WLAN_AUTH_FT) {
1329 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1330 HOSTAPD_LEVEL_DEBUG,
1331 "PMK from FT - skip IEEE 802.1X/EAP");
1332 /* Setup EAPOL state machines to already authenticated state
1333 * because of existing FT information from R0KH. */
1334 sta->eapol_sm->keyRun = true;
1335 sta->eapol_sm->eap_if->eapKeyAvailable = true;
1336 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1337 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1338 sta->eapol_sm->authSuccess = true;
1339 sta->eapol_sm->authFail = false;
1340 sta->eapol_sm->portValid = true;
1341 if (sta->eapol_sm->eap)
1342 eap_sm_notify_cached(sta->eapol_sm->eap);
1343 ap_sta_bind_vlan(hapd, sta);
1344 return;
1345 }
1346 #endif /* CONFIG_IEEE80211R_AP */
1347
1348 #ifdef CONFIG_FILS
1349 if (sta->auth_alg == WLAN_AUTH_FILS_SK ||
1350 sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
1351 sta->auth_alg == WLAN_AUTH_FILS_PK) {
1352 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1353 HOSTAPD_LEVEL_DEBUG,
1354 "PMK from FILS - skip IEEE 802.1X/EAP");
1355 /* Setup EAPOL state machines to already authenticated state
1356 * because of existing FILS information. */
1357 sta->eapol_sm->keyRun = true;
1358 sta->eapol_sm->eap_if->eapKeyAvailable = true;
1359 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1360 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1361 sta->eapol_sm->authSuccess = true;
1362 sta->eapol_sm->authFail = false;
1363 sta->eapol_sm->portValid = true;
1364 if (sta->eapol_sm->eap)
1365 eap_sm_notify_cached(sta->eapol_sm->eap);
1366 wpa_auth_set_ptk_rekey_timer(sta->wpa_sm);
1367 return;
1368 }
1369 #endif /* CONFIG_FILS */
1370
1371 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
1372 if (pmksa) {
1373 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1374 HOSTAPD_LEVEL_DEBUG,
1375 "PMK from PMKSA cache - skip IEEE 802.1X/EAP");
1376 /* Setup EAPOL state machines to already authenticated state
1377 * because of existing PMKSA information in the cache. */
1378 sta->eapol_sm->keyRun = true;
1379 sta->eapol_sm->eap_if->eapKeyAvailable = true;
1380 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1381 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1382 sta->eapol_sm->authSuccess = true;
1383 sta->eapol_sm->authFail = false;
1384 if (sta->eapol_sm->eap)
1385 eap_sm_notify_cached(sta->eapol_sm->eap);
1386 pmksa_cache_to_eapol_data(hapd, pmksa, sta->eapol_sm);
1387 ap_sta_bind_vlan(hapd, sta);
1388 } else {
1389 if (reassoc) {
1390 /*
1391 * Force EAPOL state machines to start
1392 * re-authentication without having to wait for the
1393 * Supplicant to send EAPOL-Start.
1394 */
1395 sta->eapol_sm->reAuthenticate = true;
1396 }
1397 eapol_auth_step(sta->eapol_sm);
1398 }
1399 }
1400
1401
ieee802_1x_free_station(struct hostapd_data * hapd,struct sta_info * sta)1402 void ieee802_1x_free_station(struct hostapd_data *hapd, struct sta_info *sta)
1403 {
1404 struct eapol_state_machine *sm = sta->eapol_sm;
1405
1406 #ifdef CONFIG_HS20
1407 eloop_cancel_timeout(ieee802_1x_wnm_notif_send, hapd, sta);
1408 #endif /* CONFIG_HS20 */
1409
1410 if (sta->pending_eapol_rx) {
1411 wpabuf_free(sta->pending_eapol_rx->buf);
1412 os_free(sta->pending_eapol_rx);
1413 sta->pending_eapol_rx = NULL;
1414 }
1415
1416 if (!sm)
1417 return;
1418
1419 sta->eapol_sm = NULL;
1420
1421 #ifndef CONFIG_NO_RADIUS
1422 radius_msg_free(sm->last_recv_radius);
1423 radius_free_class(&sm->radius_class);
1424 #endif /* CONFIG_NO_RADIUS */
1425
1426 eapol_auth_free(sm);
1427 }
1428
1429
1430 #ifndef CONFIG_NO_RADIUS
ieee802_1x_decapsulate_radius(struct hostapd_data * hapd,struct sta_info * sta)1431 static void ieee802_1x_decapsulate_radius(struct hostapd_data *hapd,
1432 struct sta_info *sta)
1433 {
1434 struct wpabuf *eap;
1435 const struct eap_hdr *hdr;
1436 int eap_type = -1;
1437 char buf[64];
1438 struct radius_msg *msg;
1439 struct eapol_state_machine *sm = sta->eapol_sm;
1440
1441 if (!sm || !sm->last_recv_radius) {
1442 if (sm)
1443 sm->eap_if->aaaEapNoReq = true;
1444 return;
1445 }
1446
1447 msg = sm->last_recv_radius;
1448
1449 eap = radius_msg_get_eap(msg);
1450 if (!eap) {
1451 /* RFC 3579, Chap. 2.6.3:
1452 * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
1453 * attribute */
1454 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1455 HOSTAPD_LEVEL_WARNING,
1456 "could not extract EAP-Message from RADIUS message");
1457 sm->eap_if->aaaEapNoReq = true;
1458 return;
1459 }
1460
1461 if (wpabuf_len(eap) < sizeof(*hdr)) {
1462 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1463 HOSTAPD_LEVEL_WARNING,
1464 "too short EAP packet received from authentication server");
1465 wpabuf_free(eap);
1466 sm->eap_if->aaaEapNoReq = true;
1467 return;
1468 }
1469
1470 if (wpabuf_len(eap) > sizeof(*hdr))
1471 eap_type = (wpabuf_head_u8(eap))[sizeof(*hdr)];
1472
1473 hdr = wpabuf_head(eap);
1474 switch (hdr->code) {
1475 case EAP_CODE_REQUEST:
1476 if (eap_type >= 0)
1477 sm->eap_type_authsrv = eap_type;
1478 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
1479 eap_server_get_name(0, eap_type), eap_type);
1480 break;
1481 case EAP_CODE_RESPONSE:
1482 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
1483 eap_server_get_name(0, eap_type), eap_type);
1484 break;
1485 case EAP_CODE_SUCCESS:
1486 os_strlcpy(buf, "EAP Success", sizeof(buf));
1487 break;
1488 case EAP_CODE_FAILURE:
1489 os_strlcpy(buf, "EAP Failure", sizeof(buf));
1490 break;
1491 default:
1492 os_strlcpy(buf, "unknown EAP code", sizeof(buf));
1493 break;
1494 }
1495 buf[sizeof(buf) - 1] = '\0';
1496 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1497 HOSTAPD_LEVEL_DEBUG,
1498 "decapsulated EAP packet (code=%d id=%d len=%d) from RADIUS server: %s",
1499 hdr->code, hdr->identifier, be_to_host16(hdr->length),
1500 buf);
1501 sm->eap_if->aaaEapReq = true;
1502
1503 wpabuf_free(sm->eap_if->aaaEapReqData);
1504 sm->eap_if->aaaEapReqData = eap;
1505 }
1506
1507
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)1508 static void ieee802_1x_get_keys(struct hostapd_data *hapd,
1509 struct sta_info *sta, struct radius_msg *msg,
1510 struct radius_msg *req,
1511 const u8 *shared_secret,
1512 size_t shared_secret_len)
1513 {
1514 struct radius_ms_mppe_keys *keys;
1515 u8 *buf;
1516 size_t len;
1517 struct eapol_state_machine *sm = sta->eapol_sm;
1518
1519 if (!sm)
1520 return;
1521
1522 keys = radius_msg_get_ms_keys(msg, req, shared_secret,
1523 shared_secret_len);
1524
1525 if (keys && keys->send && keys->recv) {
1526 len = keys->send_len + keys->recv_len;
1527 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Send-Key",
1528 keys->send, keys->send_len);
1529 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Recv-Key",
1530 keys->recv, keys->recv_len);
1531
1532 os_free(sm->eap_if->aaaEapKeyData);
1533 sm->eap_if->aaaEapKeyData = os_malloc(len);
1534 if (sm->eap_if->aaaEapKeyData) {
1535 os_memcpy(sm->eap_if->aaaEapKeyData, keys->recv,
1536 keys->recv_len);
1537 os_memcpy(sm->eap_if->aaaEapKeyData + keys->recv_len,
1538 keys->send, keys->send_len);
1539 sm->eap_if->aaaEapKeyDataLen = len;
1540 sm->eap_if->aaaEapKeyAvailable = true;
1541 }
1542 } else {
1543 wpa_printf(MSG_DEBUG,
1544 "MS-MPPE: 1x_get_keys, could not get keys: %p send: %p recv: %p",
1545 keys, keys ? keys->send : NULL,
1546 keys ? keys->recv : NULL);
1547 }
1548
1549 if (keys) {
1550 os_free(keys->send);
1551 os_free(keys->recv);
1552 os_free(keys);
1553 }
1554
1555 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_EAP_KEY_NAME, &buf, &len,
1556 NULL) == 0) {
1557 os_free(sm->eap_if->eapSessionId);
1558 sm->eap_if->eapSessionId = os_memdup(buf, len);
1559 if (sm->eap_if->eapSessionId) {
1560 sm->eap_if->eapSessionIdLen = len;
1561 wpa_hexdump(MSG_DEBUG, "EAP-Key Name",
1562 sm->eap_if->eapSessionId,
1563 sm->eap_if->eapSessionIdLen);
1564 }
1565 } else {
1566 sm->eap_if->eapSessionIdLen = 0;
1567 }
1568 }
1569
1570
ieee802_1x_store_radius_class(struct hostapd_data * hapd,struct sta_info * sta,struct radius_msg * msg)1571 static void ieee802_1x_store_radius_class(struct hostapd_data *hapd,
1572 struct sta_info *sta,
1573 struct radius_msg *msg)
1574 {
1575 u8 *attr_class;
1576 size_t class_len;
1577 struct eapol_state_machine *sm = sta->eapol_sm;
1578 int count, i;
1579 struct radius_attr_data *nclass;
1580 size_t nclass_count;
1581
1582 if (!hapd->conf->radius->acct_server || !hapd->radius || !sm)
1583 return;
1584
1585 radius_free_class(&sm->radius_class);
1586 count = radius_msg_count_attr(msg, RADIUS_ATTR_CLASS, 1);
1587 if (count <= 0)
1588 return;
1589
1590 nclass = os_calloc(count, sizeof(struct radius_attr_data));
1591 if (!nclass)
1592 return;
1593
1594 nclass_count = 0;
1595
1596 attr_class = NULL;
1597 for (i = 0; i < count; i++) {
1598 do {
1599 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CLASS,
1600 &attr_class, &class_len,
1601 attr_class) < 0) {
1602 i = count;
1603 break;
1604 }
1605 } while (class_len < 1);
1606
1607 nclass[nclass_count].data = os_memdup(attr_class, class_len);
1608 if (!nclass[nclass_count].data)
1609 break;
1610
1611 nclass[nclass_count].len = class_len;
1612 nclass_count++;
1613 }
1614
1615 sm->radius_class.attr = nclass;
1616 sm->radius_class.count = nclass_count;
1617 wpa_printf(MSG_DEBUG,
1618 "IEEE 802.1X: Stored %lu RADIUS Class attributes for "
1619 MACSTR,
1620 (unsigned long) sm->radius_class.count,
1621 MAC2STR(sta->addr));
1622 }
1623
1624
1625 /* 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)1626 static void ieee802_1x_update_sta_identity(struct hostapd_data *hapd,
1627 struct sta_info *sta,
1628 struct radius_msg *msg)
1629 {
1630 u8 *buf, *identity;
1631 size_t len;
1632 struct eapol_state_machine *sm = sta->eapol_sm;
1633
1634 if (!sm)
1635 return;
1636
1637 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &buf, &len,
1638 NULL) < 0)
1639 return;
1640
1641 identity = (u8 *) dup_binstr(buf, len);
1642 if (!identity)
1643 return;
1644
1645 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1646 HOSTAPD_LEVEL_DEBUG,
1647 "old identity '%s' updated with User-Name from Access-Accept '%s'",
1648 sm->identity ? (char *) sm->identity : "N/A",
1649 (char *) identity);
1650
1651 os_free(sm->identity);
1652 sm->identity = identity;
1653 sm->identity_len = len;
1654 }
1655
1656
1657 /* 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)1658 static void ieee802_1x_update_sta_cui(struct hostapd_data *hapd,
1659 struct sta_info *sta,
1660 struct radius_msg *msg)
1661 {
1662 struct eapol_state_machine *sm = sta->eapol_sm;
1663 struct wpabuf *cui;
1664 u8 *buf;
1665 size_t len;
1666
1667 if (!sm)
1668 return;
1669
1670 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
1671 &buf, &len, NULL) < 0)
1672 return;
1673
1674 cui = wpabuf_alloc_copy(buf, len);
1675 if (!cui)
1676 return;
1677
1678 wpabuf_free(sm->radius_cui);
1679 sm->radius_cui = cui;
1680 }
1681
1682
1683 #ifdef CONFIG_HS20
1684
ieee802_1x_hs20_sub_rem(struct sta_info * sta,u8 * pos,size_t len)1685 static void ieee802_1x_hs20_sub_rem(struct sta_info *sta, u8 *pos, size_t len)
1686 {
1687 sta->remediation = 1;
1688 os_free(sta->remediation_url);
1689 if (len > 2) {
1690 sta->remediation_url = os_malloc(len);
1691 if (!sta->remediation_url)
1692 return;
1693 sta->remediation_method = pos[0];
1694 os_memcpy(sta->remediation_url, pos + 1, len - 1);
1695 sta->remediation_url[len - 1] = '\0';
1696 wpa_printf(MSG_DEBUG,
1697 "HS 2.0: Subscription remediation needed for "
1698 MACSTR " - server method %u URL %s",
1699 MAC2STR(sta->addr), sta->remediation_method,
1700 sta->remediation_url);
1701 } else {
1702 sta->remediation_url = NULL;
1703 wpa_printf(MSG_DEBUG,
1704 "HS 2.0: Subscription remediation needed for "
1705 MACSTR, MAC2STR(sta->addr));
1706 }
1707 /* TODO: assign the STA into remediation VLAN or add filtering */
1708 }
1709
1710
ieee802_1x_hs20_deauth_req(struct hostapd_data * hapd,struct sta_info * sta,const u8 * pos,size_t len)1711 static void ieee802_1x_hs20_deauth_req(struct hostapd_data *hapd,
1712 struct sta_info *sta, const u8 *pos,
1713 size_t len)
1714 {
1715 size_t url_len;
1716 unsigned int timeout;
1717
1718 if (len < 3)
1719 return; /* Malformed information */
1720 url_len = len - 3;
1721 sta->hs20_deauth_requested = 1;
1722 sta->hs20_deauth_on_ack = url_len == 0;
1723 wpa_printf(MSG_DEBUG,
1724 "HS 2.0: Deauthentication request - Code %u Re-auth Delay %u URL length %zu",
1725 *pos, WPA_GET_LE16(pos + 1), url_len);
1726 wpabuf_free(sta->hs20_deauth_req);
1727 sta->hs20_deauth_req = wpabuf_alloc(len + 1);
1728 if (sta->hs20_deauth_req) {
1729 wpabuf_put_data(sta->hs20_deauth_req, pos, 3);
1730 wpabuf_put_u8(sta->hs20_deauth_req, url_len);
1731 wpabuf_put_data(sta->hs20_deauth_req, pos + 3, url_len);
1732 }
1733 timeout = hapd->conf->hs20_deauth_req_timeout;
1734 /* If there is no URL, no need to provide time to fetch it. Use a short
1735 * timeout here to allow maximum time for completing 4-way handshake and
1736 * WNM-Notification delivery. Acknowledgement of the frame will result
1737 * in cutting this wait further. */
1738 if (!url_len && timeout > 2)
1739 timeout = 2;
1740 ap_sta_session_timeout(hapd, sta, timeout);
1741 }
1742
1743
ieee802_1x_hs20_session_info(struct hostapd_data * hapd,struct sta_info * sta,u8 * pos,size_t len,int session_timeout)1744 static void ieee802_1x_hs20_session_info(struct hostapd_data *hapd,
1745 struct sta_info *sta, u8 *pos,
1746 size_t len, int session_timeout)
1747 {
1748 unsigned int swt;
1749 int warning_time, beacon_int;
1750
1751 if (len < 1)
1752 return; /* Malformed information */
1753 os_free(sta->hs20_session_info_url);
1754 sta->hs20_session_info_url = os_malloc(len);
1755 if (!sta->hs20_session_info_url)
1756 return;
1757 swt = pos[0];
1758 os_memcpy(sta->hs20_session_info_url, pos + 1, len - 1);
1759 sta->hs20_session_info_url[len - 1] = '\0';
1760 wpa_printf(MSG_DEBUG,
1761 "HS 2.0: Session Information URL='%s' SWT=%u (session_timeout=%d)",
1762 sta->hs20_session_info_url, swt, session_timeout);
1763 if (session_timeout < 0) {
1764 wpa_printf(MSG_DEBUG,
1765 "HS 2.0: No Session-Timeout set - ignore session info URL");
1766 return;
1767 }
1768 if (swt == 255)
1769 swt = 1; /* Use one minute as the AP selected value */
1770
1771 if ((unsigned int) session_timeout < swt * 60)
1772 warning_time = 0;
1773 else
1774 warning_time = session_timeout - swt * 60;
1775
1776 beacon_int = hapd->iconf->beacon_int;
1777 if (beacon_int < 1)
1778 beacon_int = 100; /* best guess */
1779 sta->hs20_disassoc_timer = swt * 60 * 1000 / beacon_int * 125 / 128;
1780 if (sta->hs20_disassoc_timer > 65535)
1781 sta->hs20_disassoc_timer = 65535;
1782
1783 ap_sta_session_warning_timeout(hapd, sta, warning_time);
1784 }
1785
1786
ieee802_1x_hs20_t_c_filtering(struct hostapd_data * hapd,struct sta_info * sta,u8 * pos,size_t len)1787 static void ieee802_1x_hs20_t_c_filtering(struct hostapd_data *hapd,
1788 struct sta_info *sta, u8 *pos,
1789 size_t len)
1790 {
1791 if (len < 4)
1792 return; /* Malformed information */
1793 wpa_printf(MSG_DEBUG,
1794 "HS 2.0: Terms and Conditions filtering %02x %02x %02x %02x",
1795 pos[0], pos[1], pos[2], pos[3]);
1796 hs20_t_c_filtering(hapd, sta, pos[0] & BIT(0));
1797 }
1798
1799
ieee802_1x_hs20_t_c_url(struct hostapd_data * hapd,struct sta_info * sta,u8 * pos,size_t len)1800 static void ieee802_1x_hs20_t_c_url(struct hostapd_data *hapd,
1801 struct sta_info *sta, u8 *pos, size_t len)
1802 {
1803 os_free(sta->t_c_url);
1804 sta->t_c_url = os_malloc(len + 1);
1805 if (!sta->t_c_url)
1806 return;
1807 os_memcpy(sta->t_c_url, pos, len);
1808 sta->t_c_url[len] = '\0';
1809 wpa_printf(MSG_DEBUG,
1810 "HS 2.0: Terms and Conditions URL %s", sta->t_c_url);
1811 }
1812
1813 #endif /* CONFIG_HS20 */
1814
1815
ieee802_1x_check_hs20(struct hostapd_data * hapd,struct sta_info * sta,struct radius_msg * msg,int session_timeout)1816 static void ieee802_1x_check_hs20(struct hostapd_data *hapd,
1817 struct sta_info *sta,
1818 struct radius_msg *msg,
1819 int session_timeout)
1820 {
1821 #ifdef CONFIG_HS20
1822 u8 *buf, *pos, *end, type, sublen;
1823 size_t len;
1824
1825 buf = NULL;
1826 sta->remediation = 0;
1827 sta->hs20_deauth_requested = 0;
1828 sta->hs20_deauth_on_ack = 0;
1829
1830 for (;;) {
1831 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_VENDOR_SPECIFIC,
1832 &buf, &len, buf) < 0)
1833 break;
1834 if (len < 6)
1835 continue;
1836 pos = buf;
1837 end = buf + len;
1838 if (WPA_GET_BE32(pos) != RADIUS_VENDOR_ID_WFA)
1839 continue;
1840 pos += 4;
1841
1842 type = *pos++;
1843 sublen = *pos++;
1844 if (sublen < 2)
1845 continue; /* invalid length */
1846 sublen -= 2; /* skip header */
1847 if (pos + sublen > end)
1848 continue; /* invalid WFA VSA */
1849
1850 switch (type) {
1851 case RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION:
1852 ieee802_1x_hs20_sub_rem(sta, pos, sublen);
1853 break;
1854 case RADIUS_VENDOR_ATTR_WFA_HS20_DEAUTH_REQ:
1855 ieee802_1x_hs20_deauth_req(hapd, sta, pos, sublen);
1856 break;
1857 case RADIUS_VENDOR_ATTR_WFA_HS20_SESSION_INFO_URL:
1858 ieee802_1x_hs20_session_info(hapd, sta, pos, sublen,
1859 session_timeout);
1860 break;
1861 case RADIUS_VENDOR_ATTR_WFA_HS20_T_C_FILTERING:
1862 ieee802_1x_hs20_t_c_filtering(hapd, sta, pos, sublen);
1863 break;
1864 case RADIUS_VENDOR_ATTR_WFA_HS20_T_C_URL:
1865 ieee802_1x_hs20_t_c_url(hapd, sta, pos, sublen);
1866 break;
1867 }
1868 }
1869 #endif /* CONFIG_HS20 */
1870 }
1871
1872
1873 struct sta_id_search {
1874 u8 identifier;
1875 struct eapol_state_machine *sm;
1876 };
1877
1878
ieee802_1x_select_radius_identifier(struct hostapd_data * hapd,struct sta_info * sta,void * ctx)1879 static int ieee802_1x_select_radius_identifier(struct hostapd_data *hapd,
1880 struct sta_info *sta,
1881 void *ctx)
1882 {
1883 struct sta_id_search *id_search = ctx;
1884 struct eapol_state_machine *sm = sta->eapol_sm;
1885
1886 if (sm && sm->radius_identifier >= 0 &&
1887 sm->radius_identifier == id_search->identifier) {
1888 id_search->sm = sm;
1889 return 1;
1890 }
1891 return 0;
1892 }
1893
1894
1895 static struct eapol_state_machine *
ieee802_1x_search_radius_identifier(struct hostapd_data * hapd,u8 identifier)1896 ieee802_1x_search_radius_identifier(struct hostapd_data *hapd, u8 identifier)
1897 {
1898 struct sta_id_search id_search;
1899
1900 id_search.identifier = identifier;
1901 id_search.sm = NULL;
1902 ap_for_each_sta(hapd, ieee802_1x_select_radius_identifier, &id_search);
1903 return id_search.sm;
1904 }
1905
1906
1907 #ifndef CONFIG_NO_VLAN
ieee802_1x_update_vlan(struct radius_msg * msg,struct hostapd_data * hapd,struct sta_info * sta)1908 static int ieee802_1x_update_vlan(struct radius_msg *msg,
1909 struct hostapd_data *hapd,
1910 struct sta_info *sta)
1911 {
1912 struct vlan_description vlan_desc;
1913
1914 os_memset(&vlan_desc, 0, sizeof(vlan_desc));
1915 vlan_desc.notempty = !!radius_msg_get_vlanid(msg, &vlan_desc.untagged,
1916 MAX_NUM_TAGGED_VLAN,
1917 vlan_desc.tagged);
1918
1919 if (vlan_desc.notempty &&
1920 !hostapd_vlan_valid(hapd->conf->vlan, &vlan_desc)) {
1921 sta->eapol_sm->authFail = true;
1922 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
1923 HOSTAPD_LEVEL_INFO,
1924 "Invalid VLAN %d%s received from RADIUS server",
1925 vlan_desc.untagged,
1926 vlan_desc.tagged[0] ? "+" : "");
1927 os_memset(&vlan_desc, 0, sizeof(vlan_desc));
1928 ap_sta_set_vlan(hapd, sta, &vlan_desc);
1929 return -1;
1930 }
1931
1932 if (hapd->conf->ssid.dynamic_vlan == DYNAMIC_VLAN_REQUIRED &&
1933 !vlan_desc.notempty) {
1934 sta->eapol_sm->authFail = true;
1935 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1936 HOSTAPD_LEVEL_INFO,
1937 "authentication server did not include required VLAN ID in Access-Accept");
1938 return -1;
1939 }
1940
1941 return ap_sta_set_vlan(hapd, sta, &vlan_desc);
1942 }
1943 #endif /* CONFIG_NO_VLAN */
1944
1945
1946 /**
1947 * ieee802_1x_receive_auth - Process RADIUS frames from Authentication Server
1948 * @msg: RADIUS response message
1949 * @req: RADIUS request message
1950 * @shared_secret: RADIUS shared secret
1951 * @shared_secret_len: Length of shared_secret in octets
1952 * @data: Context data (struct hostapd_data *)
1953 * Returns: Processing status
1954 */
1955 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)1956 ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
1957 const u8 *shared_secret, size_t shared_secret_len,
1958 void *data)
1959 {
1960 struct hostapd_data *hapd = data;
1961 struct sta_info *sta;
1962 u32 session_timeout = 0, termination_action, acct_interim_interval;
1963 int session_timeout_set;
1964 u32 reason_code;
1965 struct eapol_state_machine *sm;
1966 int override_eapReq = 0;
1967 struct radius_hdr *hdr = radius_msg_get_hdr(msg);
1968
1969 sm = ieee802_1x_search_radius_identifier(hapd, hdr->identifier);
1970 if (!sm) {
1971 wpa_printf(MSG_DEBUG,
1972 "IEEE 802.1X: Could not find matching station for this RADIUS message");
1973 return RADIUS_RX_UNKNOWN;
1974 }
1975 sta = sm->sta;
1976
1977 /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
1978 * present when packet contains an EAP-Message attribute */
1979 if (hdr->code == RADIUS_CODE_ACCESS_REJECT &&
1980 radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
1981 0) < 0 &&
1982 radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
1983 wpa_printf(MSG_DEBUG,
1984 "Allowing RADIUS Access-Reject without Message-Authenticator since it does not include EAP-Message");
1985 } else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
1986 req, 1)) {
1987 wpa_printf(MSG_INFO,
1988 "Incoming RADIUS packet did not have correct Message-Authenticator - dropped");
1989 return RADIUS_RX_INVALID_AUTHENTICATOR;
1990 }
1991
1992 if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
1993 hdr->code != RADIUS_CODE_ACCESS_REJECT &&
1994 hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
1995 wpa_printf(MSG_INFO, "Unknown RADIUS message code");
1996 return RADIUS_RX_UNKNOWN;
1997 }
1998
1999 sm->radius_identifier = -1;
2000 wpa_printf(MSG_DEBUG, "RADIUS packet matching with station " MACSTR,
2001 MAC2STR(sta->addr));
2002
2003 radius_msg_free(sm->last_recv_radius);
2004 sm->last_recv_radius = msg;
2005
2006 session_timeout_set =
2007 !radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
2008 &session_timeout);
2009 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_TERMINATION_ACTION,
2010 &termination_action))
2011 termination_action = RADIUS_TERMINATION_ACTION_DEFAULT;
2012
2013 if (hapd->conf->acct_interim_interval == 0 &&
2014 hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
2015 radius_msg_get_attr_int32(msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
2016 &acct_interim_interval) == 0) {
2017 if (acct_interim_interval < 60) {
2018 hostapd_logger(hapd, sta->addr,
2019 HOSTAPD_MODULE_IEEE8021X,
2020 HOSTAPD_LEVEL_INFO,
2021 "ignored too small Acct-Interim-Interval %d",
2022 acct_interim_interval);
2023 } else
2024 sta->acct_interim_interval = acct_interim_interval;
2025 }
2026
2027
2028 switch (hdr->code) {
2029 case RADIUS_CODE_ACCESS_ACCEPT:
2030 #ifndef CONFIG_NO_VLAN
2031 if (hapd->conf->ssid.dynamic_vlan != DYNAMIC_VLAN_DISABLED &&
2032 ieee802_1x_update_vlan(msg, hapd, sta) < 0)
2033 break;
2034
2035 if (sta->vlan_id > 0) {
2036 hostapd_logger(hapd, sta->addr,
2037 HOSTAPD_MODULE_RADIUS,
2038 HOSTAPD_LEVEL_INFO,
2039 "VLAN ID %d", sta->vlan_id);
2040 }
2041
2042 if ((sta->flags & WLAN_STA_ASSOC) &&
2043 ap_sta_bind_vlan(hapd, sta) < 0)
2044 break;
2045 #endif /* CONFIG_NO_VLAN */
2046
2047 sta->session_timeout_set = !!session_timeout_set;
2048 os_get_reltime(&sta->session_timeout);
2049 sta->session_timeout.sec += session_timeout;
2050
2051 /* RFC 3580, Ch. 3.17 */
2052 if (session_timeout_set && termination_action ==
2053 RADIUS_TERMINATION_ACTION_RADIUS_REQUEST)
2054 sm->reAuthPeriod = session_timeout;
2055 else if (session_timeout_set)
2056 ap_sta_session_timeout(hapd, sta, session_timeout);
2057 else
2058 ap_sta_no_session_timeout(hapd, sta);
2059
2060 sm->eap_if->aaaSuccess = true;
2061 override_eapReq = 1;
2062 ieee802_1x_get_keys(hapd, sta, msg, req, shared_secret,
2063 shared_secret_len);
2064 ieee802_1x_store_radius_class(hapd, sta, msg);
2065 ieee802_1x_update_sta_identity(hapd, sta, msg);
2066 ieee802_1x_update_sta_cui(hapd, sta, msg);
2067 ieee802_1x_check_hs20(hapd, sta, msg,
2068 session_timeout_set ?
2069 (int) session_timeout : -1);
2070 break;
2071 case RADIUS_CODE_ACCESS_REJECT:
2072 sm->eap_if->aaaFail = true;
2073 override_eapReq = 1;
2074 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_WLAN_REASON_CODE,
2075 &reason_code) == 0) {
2076 wpa_printf(MSG_DEBUG,
2077 "RADIUS server indicated WLAN-Reason-Code %u in Access-Reject for "
2078 MACSTR, reason_code, MAC2STR(sta->addr));
2079 sta->disconnect_reason_code = reason_code;
2080 }
2081 break;
2082 case RADIUS_CODE_ACCESS_CHALLENGE:
2083 sm->eap_if->aaaEapReq = true;
2084 if (session_timeout_set) {
2085 /* RFC 2869, Ch. 2.3.2; RFC 3580, Ch. 3.17 */
2086 sm->eap_if->aaaMethodTimeout = session_timeout;
2087 hostapd_logger(hapd, sm->addr,
2088 HOSTAPD_MODULE_IEEE8021X,
2089 HOSTAPD_LEVEL_DEBUG,
2090 "using EAP timeout of %d seconds (from RADIUS)",
2091 sm->eap_if->aaaMethodTimeout);
2092 } else {
2093 /*
2094 * Use dynamic retransmission behavior per EAP
2095 * specification.
2096 */
2097 sm->eap_if->aaaMethodTimeout = 0;
2098 }
2099 break;
2100 }
2101
2102 ieee802_1x_decapsulate_radius(hapd, sta);
2103 if (override_eapReq)
2104 sm->eap_if->aaaEapReq = false;
2105
2106 #ifdef CONFIG_FILS
2107 #ifdef NEED_AP_MLME
2108 if (sta->flags &
2109 (WLAN_STA_PENDING_FILS_ERP | WLAN_STA_PENDING_PASN_FILS_ERP)) {
2110 /* TODO: Add a PMKSA entry on success? */
2111 ieee802_11_finish_fils_auth(
2112 hapd, sta, hdr->code == RADIUS_CODE_ACCESS_ACCEPT,
2113 sm->eap_if->aaaEapReqData,
2114 sm->eap_if->aaaEapKeyData,
2115 sm->eap_if->aaaEapKeyDataLen);
2116 }
2117 #endif /* NEED_AP_MLME */
2118 #endif /* CONFIG_FILS */
2119
2120 eapol_auth_step(sm);
2121
2122 return RADIUS_RX_QUEUED;
2123 }
2124 #endif /* CONFIG_NO_RADIUS */
2125
2126
ieee802_1x_abort_auth(struct hostapd_data * hapd,struct sta_info * sta)2127 void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta)
2128 {
2129 struct eapol_state_machine *sm = sta->eapol_sm;
2130
2131 if (!sm)
2132 return;
2133
2134 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
2135 HOSTAPD_LEVEL_DEBUG, "aborting authentication");
2136
2137 #ifndef CONFIG_NO_RADIUS
2138 radius_msg_free(sm->last_recv_radius);
2139 sm->last_recv_radius = NULL;
2140 #endif /* CONFIG_NO_RADIUS */
2141
2142 if (sm->eap_if->eapTimeout) {
2143 /*
2144 * Disconnect the STA since it did not reply to the last EAP
2145 * request and we cannot continue EAP processing (EAP-Failure
2146 * could only be sent if the EAP peer actually replied).
2147 */
2148 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "EAP Timeout, STA " MACSTR,
2149 MAC2STR(sta->addr));
2150
2151 sm->eap_if->portEnabled = false;
2152 ap_sta_disconnect(hapd, sta, sta->addr,
2153 WLAN_REASON_PREV_AUTH_NOT_VALID);
2154 }
2155 }
2156
2157
2158 #ifdef CONFIG_WEP
2159
ieee802_1x_rekey_broadcast(struct hostapd_data * hapd)2160 static int ieee802_1x_rekey_broadcast(struct hostapd_data *hapd)
2161 {
2162 struct eapol_authenticator *eapol = hapd->eapol_auth;
2163
2164 if (hapd->conf->default_wep_key_len < 1)
2165 return 0;
2166
2167 os_free(eapol->default_wep_key);
2168 eapol->default_wep_key = os_malloc(hapd->conf->default_wep_key_len);
2169 if (!eapol->default_wep_key ||
2170 random_get_bytes(eapol->default_wep_key,
2171 hapd->conf->default_wep_key_len)) {
2172 wpa_printf(MSG_INFO, "Could not generate random WEP key");
2173 os_free(eapol->default_wep_key);
2174 eapol->default_wep_key = NULL;
2175 return -1;
2176 }
2177
2178 wpa_hexdump_key(MSG_DEBUG, "IEEE 802.1X: New default WEP key",
2179 eapol->default_wep_key,
2180 hapd->conf->default_wep_key_len);
2181
2182 return 0;
2183 }
2184
2185
ieee802_1x_sta_key_available(struct hostapd_data * hapd,struct sta_info * sta,void * ctx)2186 static int ieee802_1x_sta_key_available(struct hostapd_data *hapd,
2187 struct sta_info *sta, void *ctx)
2188 {
2189 if (sta->eapol_sm) {
2190 sta->eapol_sm->eap_if->eapKeyAvailable = true;
2191 eapol_auth_step(sta->eapol_sm);
2192 }
2193 return 0;
2194 }
2195
2196
ieee802_1x_rekey(void * eloop_ctx,void * timeout_ctx)2197 static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx)
2198 {
2199 struct hostapd_data *hapd = eloop_ctx;
2200 struct eapol_authenticator *eapol = hapd->eapol_auth;
2201
2202 if (eapol->default_wep_key_idx >= 3)
2203 eapol->default_wep_key_idx =
2204 hapd->conf->individual_wep_key_len > 0 ? 1 : 0;
2205 else
2206 eapol->default_wep_key_idx++;
2207
2208 wpa_printf(MSG_DEBUG, "IEEE 802.1X: New default WEP key index %d",
2209 eapol->default_wep_key_idx);
2210
2211 if (ieee802_1x_rekey_broadcast(hapd)) {
2212 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
2213 HOSTAPD_LEVEL_WARNING,
2214 "failed to generate a new broadcast key");
2215 os_free(eapol->default_wep_key);
2216 eapol->default_wep_key = NULL;
2217 return;
2218 }
2219
2220 /* TODO: Could setup key for RX here, but change default TX keyid only
2221 * after new broadcast key has been sent to all stations. */
2222 if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
2223 broadcast_ether_addr,
2224 eapol->default_wep_key_idx, 0, 1, NULL, 0,
2225 eapol->default_wep_key,
2226 hapd->conf->default_wep_key_len,
2227 KEY_FLAG_GROUP_RX_TX_DEFAULT)) {
2228 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
2229 HOSTAPD_LEVEL_WARNING,
2230 "failed to configure a new broadcast key");
2231 os_free(eapol->default_wep_key);
2232 eapol->default_wep_key = NULL;
2233 return;
2234 }
2235
2236 ap_for_each_sta(hapd, ieee802_1x_sta_key_available, NULL);
2237
2238 if (hapd->conf->wep_rekeying_period > 0) {
2239 eloop_register_timeout(hapd->conf->wep_rekeying_period, 0,
2240 ieee802_1x_rekey, hapd, NULL);
2241 }
2242 }
2243
2244 #endif /* CONFIG_WEP */
2245
2246
ieee802_1x_eapol_send(void * ctx,void * sta_ctx,u8 type,const u8 * data,size_t datalen)2247 static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type,
2248 const u8 *data, size_t datalen)
2249 {
2250 #ifdef CONFIG_WPS
2251 struct sta_info *sta = sta_ctx;
2252
2253 if ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) ==
2254 WLAN_STA_MAYBE_WPS) {
2255 const u8 *identity;
2256 size_t identity_len;
2257 struct eapol_state_machine *sm = sta->eapol_sm;
2258
2259 identity = eap_get_identity(sm->eap, &identity_len);
2260 if (identity &&
2261 ((identity_len == WSC_ID_ENROLLEE_LEN &&
2262 os_memcmp(identity, WSC_ID_ENROLLEE,
2263 WSC_ID_ENROLLEE_LEN) == 0) ||
2264 (identity_len == WSC_ID_REGISTRAR_LEN &&
2265 os_memcmp(identity, WSC_ID_REGISTRAR,
2266 WSC_ID_REGISTRAR_LEN) == 0))) {
2267 wpa_printf(MSG_DEBUG,
2268 "WPS: WLAN_STA_MAYBE_WPS -> WLAN_STA_WPS");
2269 sta->flags |= WLAN_STA_WPS;
2270 }
2271 }
2272 #endif /* CONFIG_WPS */
2273
2274 ieee802_1x_send(ctx, sta_ctx, type, data, datalen);
2275 }
2276
2277
ieee802_1x_aaa_send(void * ctx,void * sta_ctx,const u8 * data,size_t datalen)2278 static void ieee802_1x_aaa_send(void *ctx, void *sta_ctx,
2279 const u8 *data, size_t datalen)
2280 {
2281 #ifndef CONFIG_NO_RADIUS
2282 struct hostapd_data *hapd = ctx;
2283 struct sta_info *sta = sta_ctx;
2284
2285 ieee802_1x_encapsulate_radius(hapd, sta, data, datalen);
2286 #endif /* CONFIG_NO_RADIUS */
2287 }
2288
2289
_ieee802_1x_finished(void * ctx,void * sta_ctx,int success,int preauth,int remediation,bool logoff)2290 static bool _ieee802_1x_finished(void *ctx, void *sta_ctx, int success,
2291 int preauth, int remediation, bool logoff)
2292 {
2293 struct hostapd_data *hapd = ctx;
2294 struct sta_info *sta = sta_ctx;
2295
2296 if (preauth) {
2297 rsn_preauth_finished(hapd, sta, success);
2298 return false;
2299 }
2300
2301 return ieee802_1x_finished(hapd, sta, success, remediation, logoff);
2302 }
2303
2304
ieee802_1x_get_eap_user(void * ctx,const u8 * identity,size_t identity_len,int phase2,struct eap_user * user)2305 static int ieee802_1x_get_eap_user(void *ctx, const u8 *identity,
2306 size_t identity_len, int phase2,
2307 struct eap_user *user)
2308 {
2309 struct hostapd_data *hapd = ctx;
2310 const struct hostapd_eap_user *eap_user;
2311 int i;
2312 int rv = -1;
2313
2314 eap_user = hostapd_get_eap_user(hapd, identity, identity_len, phase2);
2315 if (!eap_user)
2316 goto out;
2317
2318 os_memset(user, 0, sizeof(*user));
2319 user->phase2 = phase2;
2320 for (i = 0; i < EAP_MAX_METHODS; i++) {
2321 user->methods[i].vendor = eap_user->methods[i].vendor;
2322 user->methods[i].method = eap_user->methods[i].method;
2323 }
2324
2325 if (eap_user->password) {
2326 user->password = os_memdup(eap_user->password,
2327 eap_user->password_len);
2328 if (!user->password)
2329 goto out;
2330 user->password_len = eap_user->password_len;
2331 user->password_hash = eap_user->password_hash;
2332 if (eap_user->salt && eap_user->salt_len) {
2333 user->salt = os_memdup(eap_user->salt,
2334 eap_user->salt_len);
2335 if (!user->salt)
2336 goto out;
2337 user->salt_len = eap_user->salt_len;
2338 }
2339 }
2340 user->force_version = eap_user->force_version;
2341 user->macacl = eap_user->macacl;
2342 user->ttls_auth = eap_user->ttls_auth;
2343 user->remediation = eap_user->remediation;
2344 rv = 0;
2345
2346 out:
2347 if (rv)
2348 wpa_printf(MSG_DEBUG, "%s: Failed to find user", __func__);
2349
2350 return rv;
2351 }
2352
2353
ieee802_1x_sta_entry_alive(void * ctx,const u8 * addr)2354 static int ieee802_1x_sta_entry_alive(void *ctx, const u8 *addr)
2355 {
2356 struct hostapd_data *hapd = ctx;
2357 struct sta_info *sta;
2358
2359 sta = ap_get_sta(hapd, addr);
2360 if (!sta || !sta->eapol_sm)
2361 return 0;
2362 return 1;
2363 }
2364
2365
ieee802_1x_logger(void * ctx,const u8 * addr,eapol_logger_level level,const char * txt)2366 static void ieee802_1x_logger(void *ctx, const u8 *addr,
2367 eapol_logger_level level, const char *txt)
2368 {
2369 #ifndef CONFIG_NO_HOSTAPD_LOGGER
2370 struct hostapd_data *hapd = ctx;
2371 int hlevel;
2372
2373 switch (level) {
2374 case EAPOL_LOGGER_WARNING:
2375 hlevel = HOSTAPD_LEVEL_WARNING;
2376 break;
2377 case EAPOL_LOGGER_INFO:
2378 hlevel = HOSTAPD_LEVEL_INFO;
2379 break;
2380 case EAPOL_LOGGER_DEBUG:
2381 default:
2382 hlevel = HOSTAPD_LEVEL_DEBUG;
2383 break;
2384 }
2385
2386 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE8021X, hlevel, "%s",
2387 txt);
2388 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
2389 }
2390
2391
ieee802_1x_set_port_authorized(void * ctx,void * sta_ctx,int authorized)2392 static void ieee802_1x_set_port_authorized(void *ctx, void *sta_ctx,
2393 int authorized)
2394 {
2395 struct hostapd_data *hapd = ctx;
2396 struct sta_info *sta = sta_ctx;
2397
2398 ieee802_1x_set_sta_authorized(hapd, sta, authorized);
2399 }
2400
2401
_ieee802_1x_abort_auth(void * ctx,void * sta_ctx)2402 static void _ieee802_1x_abort_auth(void *ctx, void *sta_ctx)
2403 {
2404 struct hostapd_data *hapd = ctx;
2405 struct sta_info *sta = sta_ctx;
2406
2407 ieee802_1x_abort_auth(hapd, sta);
2408 }
2409
2410
2411 #ifdef CONFIG_WEP
_ieee802_1x_tx_key(void * ctx,void * sta_ctx)2412 static void _ieee802_1x_tx_key(void *ctx, void *sta_ctx)
2413 {
2414 #ifndef CONFIG_FIPS
2415 #ifndef CONFIG_NO_RC4
2416 struct hostapd_data *hapd = ctx;
2417 struct sta_info *sta = sta_ctx;
2418
2419 ieee802_1x_tx_key(hapd, sta);
2420 #endif /* CONFIG_NO_RC4 */
2421 #endif /* CONFIG_FIPS */
2422 }
2423 #endif /* CONFIG_WEP */
2424
2425
ieee802_1x_eapol_event(void * ctx,void * sta_ctx,enum eapol_event type)2426 static void ieee802_1x_eapol_event(void *ctx, void *sta_ctx,
2427 enum eapol_event type)
2428 {
2429 /* struct hostapd_data *hapd = ctx; */
2430 struct sta_info *sta = sta_ctx;
2431
2432 switch (type) {
2433 case EAPOL_AUTH_SM_CHANGE:
2434 wpa_auth_sm_notify(sta->wpa_sm);
2435 break;
2436 case EAPOL_AUTH_REAUTHENTICATE:
2437 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
2438 break;
2439 }
2440 }
2441
2442
2443 #ifdef CONFIG_ERP
2444
2445 static struct eap_server_erp_key *
ieee802_1x_erp_get_key(void * ctx,const char * keyname)2446 ieee802_1x_erp_get_key(void *ctx, const char *keyname)
2447 {
2448 struct hostapd_data *hapd = ctx;
2449 struct eap_server_erp_key *erp;
2450
2451 dl_list_for_each(erp, &hapd->erp_keys, struct eap_server_erp_key,
2452 list) {
2453 if (os_strcmp(erp->keyname_nai, keyname) == 0)
2454 return erp;
2455 }
2456
2457 return NULL;
2458 }
2459
2460
ieee802_1x_erp_add_key(void * ctx,struct eap_server_erp_key * erp)2461 static int ieee802_1x_erp_add_key(void *ctx, struct eap_server_erp_key *erp)
2462 {
2463 struct hostapd_data *hapd = ctx;
2464
2465 dl_list_add(&hapd->erp_keys, &erp->list);
2466 return 0;
2467 }
2468
2469 #endif /* CONFIG_ERP */
2470
2471
ieee802_1x_init(struct hostapd_data * hapd)2472 int ieee802_1x_init(struct hostapd_data *hapd)
2473 {
2474 struct eapol_auth_config conf;
2475 struct eapol_auth_cb cb;
2476
2477 dl_list_init(&hapd->erp_keys);
2478
2479 os_memset(&conf, 0, sizeof(conf));
2480 conf.eap_cfg = hapd->eap_cfg;
2481 conf.ctx = hapd;
2482 conf.eap_reauth_period = hapd->conf->eap_reauth_period;
2483 conf.wpa = hapd->conf->wpa;
2484 #ifdef CONFIG_WEP
2485 conf.individual_wep_key_len = hapd->conf->individual_wep_key_len;
2486 #endif /* CONFIG_WEP */
2487 conf.eap_req_id_text = hapd->conf->eap_req_id_text;
2488 conf.eap_req_id_text_len = hapd->conf->eap_req_id_text_len;
2489 conf.erp_send_reauth_start = hapd->conf->erp_send_reauth_start;
2490 conf.erp_domain = hapd->conf->erp_domain;
2491 #ifdef CONFIG_TESTING_OPTIONS
2492 conf.eap_skip_prot_success = hapd->conf->eap_skip_prot_success;
2493 #endif /* CONFIG_TESTING_OPTIONS */
2494
2495 os_memset(&cb, 0, sizeof(cb));
2496 cb.eapol_send = ieee802_1x_eapol_send;
2497 cb.aaa_send = ieee802_1x_aaa_send;
2498 cb.finished = _ieee802_1x_finished;
2499 cb.get_eap_user = ieee802_1x_get_eap_user;
2500 cb.sta_entry_alive = ieee802_1x_sta_entry_alive;
2501 cb.logger = ieee802_1x_logger;
2502 cb.set_port_authorized = ieee802_1x_set_port_authorized;
2503 cb.abort_auth = _ieee802_1x_abort_auth;
2504 #ifdef CONFIG_WEP
2505 cb.tx_key = _ieee802_1x_tx_key;
2506 #endif /* CONFIG_WEP */
2507 cb.eapol_event = ieee802_1x_eapol_event;
2508 #ifdef CONFIG_ERP
2509 cb.erp_get_key = ieee802_1x_erp_get_key;
2510 cb.erp_add_key = ieee802_1x_erp_add_key;
2511 #endif /* CONFIG_ERP */
2512
2513 hapd->eapol_auth = eapol_auth_init(&conf, &cb);
2514 if (!hapd->eapol_auth)
2515 return -1;
2516
2517 if ((hapd->conf->ieee802_1x || hapd->conf->wpa) &&
2518 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1))
2519 return -1;
2520
2521 #ifndef CONFIG_NO_RADIUS
2522 if (radius_client_register(hapd->radius, RADIUS_AUTH,
2523 ieee802_1x_receive_auth, hapd))
2524 return -1;
2525 #endif /* CONFIG_NO_RADIUS */
2526
2527 #ifdef CONFIG_WEP
2528 if (hapd->conf->default_wep_key_len) {
2529 int i;
2530
2531 for (i = 0; i < 4; i++)
2532 hostapd_drv_set_key(hapd->conf->iface, hapd,
2533 WPA_ALG_NONE, NULL, i, 0, 0, NULL,
2534 0, NULL, 0, KEY_FLAG_GROUP);
2535
2536 ieee802_1x_rekey(hapd, NULL);
2537
2538 if (!hapd->eapol_auth->default_wep_key)
2539 return -1;
2540 }
2541 #endif /* CONFIG_WEP */
2542
2543 return 0;
2544 }
2545
2546
ieee802_1x_erp_flush(struct hostapd_data * hapd)2547 void ieee802_1x_erp_flush(struct hostapd_data *hapd)
2548 {
2549 struct eap_server_erp_key *erp;
2550
2551 while ((erp = dl_list_first(&hapd->erp_keys, struct eap_server_erp_key,
2552 list)) != NULL) {
2553 dl_list_del(&erp->list);
2554 bin_clear_free(erp, sizeof(*erp));
2555 }
2556 }
2557
2558
ieee802_1x_deinit(struct hostapd_data * hapd)2559 void ieee802_1x_deinit(struct hostapd_data *hapd)
2560 {
2561 #ifdef CONFIG_WEP
2562 eloop_cancel_timeout(ieee802_1x_rekey, hapd, NULL);
2563 #endif /* CONFIG_WEP */
2564
2565 if (hapd->driver && hapd->drv_priv &&
2566 (hapd->conf->ieee802_1x || hapd->conf->wpa))
2567 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
2568
2569 eapol_auth_deinit(hapd->eapol_auth);
2570 hapd->eapol_auth = NULL;
2571
2572 ieee802_1x_erp_flush(hapd);
2573 }
2574
2575
ieee802_1x_tx_status(struct hostapd_data * hapd,struct sta_info * sta,const u8 * buf,size_t len,int ack)2576 int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
2577 const u8 *buf, size_t len, int ack)
2578 {
2579 struct ieee80211_hdr *hdr;
2580 u8 *pos;
2581 const unsigned char rfc1042_hdr[ETH_ALEN] =
2582 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
2583
2584 if (!sta)
2585 return -1;
2586 if (len < sizeof(*hdr) + sizeof(rfc1042_hdr) + 2)
2587 return 0;
2588
2589 hdr = (struct ieee80211_hdr *) buf;
2590 pos = (u8 *) (hdr + 1);
2591 if (os_memcmp(pos, rfc1042_hdr, sizeof(rfc1042_hdr)) != 0)
2592 return 0;
2593 pos += sizeof(rfc1042_hdr);
2594 if (WPA_GET_BE16(pos) != ETH_P_PAE)
2595 return 0;
2596 pos += 2;
2597
2598 return ieee802_1x_eapol_tx_status(hapd, sta, pos, buf + len - pos,
2599 ack);
2600 }
2601
2602
ieee802_1x_eapol_tx_status(struct hostapd_data * hapd,struct sta_info * sta,const u8 * buf,int len,int ack)2603 int ieee802_1x_eapol_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
2604 const u8 *buf, int len, int ack)
2605 {
2606 const struct ieee802_1x_hdr *xhdr =
2607 (const struct ieee802_1x_hdr *) buf;
2608 const u8 *pos = buf + sizeof(*xhdr);
2609 struct ieee802_1x_eapol_key *key;
2610
2611 if (len < (int) sizeof(*xhdr))
2612 return 0;
2613 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
2614 " TX status - version=%d type=%d length=%d - ack=%d",
2615 MAC2STR(sta->addr), xhdr->version, xhdr->type,
2616 be_to_host16(xhdr->length), ack);
2617
2618 #ifdef CONFIG_WPS
2619 if (xhdr->type == IEEE802_1X_TYPE_EAP_PACKET && ack &&
2620 (sta->flags & WLAN_STA_WPS) &&
2621 ap_sta_pending_delayed_1x_auth_fail_disconnect(hapd, sta)) {
2622 wpa_printf(MSG_DEBUG,
2623 "WPS: Indicate EAP completion on ACK for EAP-Failure");
2624 hostapd_wps_eap_completed(hapd);
2625 }
2626 #endif /* CONFIG_WPS */
2627
2628 if (xhdr->type != IEEE802_1X_TYPE_EAPOL_KEY)
2629 return 0;
2630
2631 if (pos + sizeof(struct wpa_eapol_key) <= buf + len) {
2632 const struct wpa_eapol_key *wpa;
2633
2634 wpa = (const struct wpa_eapol_key *) pos;
2635 if (wpa->type == EAPOL_KEY_TYPE_RSN ||
2636 wpa->type == EAPOL_KEY_TYPE_WPA)
2637 wpa_auth_eapol_key_tx_status(hapd->wpa_auth,
2638 sta->wpa_sm, ack);
2639 }
2640
2641 /* EAPOL EAP-Packet packets are eventually re-sent by either Supplicant
2642 * or Authenticator state machines, but EAPOL-Key packets are not
2643 * retransmitted in case of failure. Try to re-send failed EAPOL-Key
2644 * packets couple of times because otherwise STA keys become
2645 * unsynchronized with AP. */
2646 if (!ack && pos + sizeof(*key) <= buf + len) {
2647 key = (struct ieee802_1x_eapol_key *) pos;
2648 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
2649 HOSTAPD_LEVEL_DEBUG,
2650 "did not Ack EAPOL-Key frame (%scast index=%d)",
2651 key->key_index & BIT(7) ? "uni" : "broad",
2652 key->key_index & ~BIT(7));
2653 /* TODO: re-send EAPOL-Key couple of times (with short delay
2654 * between them?). If all attempt fail, report error and
2655 * deauthenticate STA so that it will get new keys when
2656 * authenticating again (e.g., after returning in range).
2657 * Separate limit/transmit state needed both for unicast and
2658 * broadcast keys(?) */
2659 }
2660 /* TODO: could move unicast key configuration from ieee802_1x_tx_key()
2661 * to here and change the key only if the EAPOL-Key packet was Acked.
2662 */
2663
2664 return 1;
2665 }
2666
2667
ieee802_1x_get_identity(struct eapol_state_machine * sm,size_t * len)2668 u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len)
2669 {
2670 if (!sm || !sm->identity)
2671 return NULL;
2672
2673 *len = sm->identity_len;
2674 return sm->identity;
2675 }
2676
2677
ieee802_1x_get_radius_class(struct eapol_state_machine * sm,size_t * len,int idx)2678 u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len,
2679 int idx)
2680 {
2681 if (!sm || !sm->radius_class.attr ||
2682 idx >= (int) sm->radius_class.count)
2683 return NULL;
2684
2685 *len = sm->radius_class.attr[idx].len;
2686 return sm->radius_class.attr[idx].data;
2687 }
2688
2689
ieee802_1x_get_radius_cui(struct eapol_state_machine * sm)2690 struct wpabuf * ieee802_1x_get_radius_cui(struct eapol_state_machine *sm)
2691 {
2692 if (!sm)
2693 return NULL;
2694 return sm->radius_cui;
2695 }
2696
2697
ieee802_1x_get_key(struct eapol_state_machine * sm,size_t * len)2698 const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len)
2699 {
2700 *len = 0;
2701 if (!sm)
2702 return NULL;
2703
2704 *len = sm->eap_if->eapKeyDataLen;
2705 return sm->eap_if->eapKeyData;
2706 }
2707
2708
2709 #ifdef CONFIG_MACSEC
ieee802_1x_get_session_id(struct eapol_state_machine * sm,size_t * len)2710 const u8 * ieee802_1x_get_session_id(struct eapol_state_machine *sm,
2711 size_t *len)
2712 {
2713 *len = 0;
2714 if (!sm || !sm->eap_if)
2715 return NULL;
2716
2717 *len = sm->eap_if->eapSessionIdLen;
2718 return sm->eap_if->eapSessionId;
2719 }
2720 #endif /* CONFIG_MACSEC */
2721
2722
ieee802_1x_notify_port_enabled(struct eapol_state_machine * sm,bool enabled)2723 void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm,
2724 bool enabled)
2725 {
2726 if (!sm)
2727 return;
2728 sm->eap_if->portEnabled = enabled;
2729 eapol_auth_step(sm);
2730 }
2731
2732
ieee802_1x_notify_port_valid(struct eapol_state_machine * sm,bool valid)2733 void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm, bool valid)
2734 {
2735 if (!sm)
2736 return;
2737 sm->portValid = valid;
2738 eapol_auth_step(sm);
2739 }
2740
2741
ieee802_1x_notify_pre_auth(struct eapol_state_machine * sm,bool pre_auth)2742 void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, bool pre_auth)
2743 {
2744 if (!sm)
2745 return;
2746 if (pre_auth)
2747 sm->flags |= EAPOL_SM_PREAUTH;
2748 else
2749 sm->flags &= ~EAPOL_SM_PREAUTH;
2750 }
2751
2752
bool_txt(bool val)2753 static const char * bool_txt(bool val)
2754 {
2755 return val ? "TRUE" : "FALSE";
2756 }
2757
2758
ieee802_1x_get_mib(struct hostapd_data * hapd,char * buf,size_t buflen)2759 int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
2760 {
2761 /* TODO */
2762 return 0;
2763 }
2764
2765
ieee802_1x_get_mib_sta(struct hostapd_data * hapd,struct sta_info * sta,char * buf,size_t buflen)2766 int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
2767 char *buf, size_t buflen)
2768 {
2769 int len = 0, ret;
2770 struct eapol_state_machine *sm = sta->eapol_sm;
2771 struct os_reltime diff;
2772 const char *name1;
2773 const char *name2;
2774 char *identity_buf = NULL;
2775
2776 if (!sm)
2777 return 0;
2778
2779 ret = os_snprintf(buf + len, buflen - len,
2780 "dot1xPaePortNumber=%d\n"
2781 "dot1xPaePortProtocolVersion=%d\n"
2782 "dot1xPaePortCapabilities=1\n"
2783 "dot1xPaePortInitialize=%d\n"
2784 "dot1xPaePortReauthenticate=FALSE\n",
2785 sta->aid,
2786 EAPOL_VERSION,
2787 sm->initialize);
2788 if (os_snprintf_error(buflen - len, ret))
2789 return len;
2790 len += ret;
2791
2792 /* dot1xAuthConfigTable */
2793 ret = os_snprintf(buf + len, buflen - len,
2794 "dot1xAuthPaeState=%d\n"
2795 "dot1xAuthBackendAuthState=%d\n"
2796 "dot1xAuthAdminControlledDirections=%d\n"
2797 "dot1xAuthOperControlledDirections=%d\n"
2798 "dot1xAuthAuthControlledPortStatus=%d\n"
2799 "dot1xAuthAuthControlledPortControl=%d\n"
2800 "dot1xAuthQuietPeriod=%u\n"
2801 "dot1xAuthServerTimeout=%u\n"
2802 "dot1xAuthReAuthPeriod=%u\n"
2803 "dot1xAuthReAuthEnabled=%s\n"
2804 "dot1xAuthKeyTxEnabled=%s\n",
2805 sm->auth_pae_state + 1,
2806 sm->be_auth_state + 1,
2807 sm->adminControlledDirections,
2808 sm->operControlledDirections,
2809 sm->authPortStatus,
2810 sm->portControl,
2811 sm->quietPeriod,
2812 sm->serverTimeout,
2813 sm->reAuthPeriod,
2814 bool_txt(sm->reAuthEnabled),
2815 bool_txt(sm->keyTxEnabled));
2816 if (os_snprintf_error(buflen - len, ret))
2817 return len;
2818 len += ret;
2819
2820 /* dot1xAuthStatsTable */
2821 ret = os_snprintf(buf + len, buflen - len,
2822 "dot1xAuthEapolFramesRx=%u\n"
2823 "dot1xAuthEapolFramesTx=%u\n"
2824 "dot1xAuthEapolStartFramesRx=%u\n"
2825 "dot1xAuthEapolLogoffFramesRx=%u\n"
2826 "dot1xAuthEapolRespIdFramesRx=%u\n"
2827 "dot1xAuthEapolRespFramesRx=%u\n"
2828 "dot1xAuthEapolReqIdFramesTx=%u\n"
2829 "dot1xAuthEapolReqFramesTx=%u\n"
2830 "dot1xAuthInvalidEapolFramesRx=%u\n"
2831 "dot1xAuthEapLengthErrorFramesRx=%u\n"
2832 "dot1xAuthLastEapolFrameVersion=%u\n"
2833 "dot1xAuthLastEapolFrameSource=" MACSTR "\n",
2834 sm->dot1xAuthEapolFramesRx,
2835 sm->dot1xAuthEapolFramesTx,
2836 sm->dot1xAuthEapolStartFramesRx,
2837 sm->dot1xAuthEapolLogoffFramesRx,
2838 sm->dot1xAuthEapolRespIdFramesRx,
2839 sm->dot1xAuthEapolRespFramesRx,
2840 sm->dot1xAuthEapolReqIdFramesTx,
2841 sm->dot1xAuthEapolReqFramesTx,
2842 sm->dot1xAuthInvalidEapolFramesRx,
2843 sm->dot1xAuthEapLengthErrorFramesRx,
2844 sm->dot1xAuthLastEapolFrameVersion,
2845 MAC2STR(sm->addr));
2846 if (os_snprintf_error(buflen - len, ret))
2847 return len;
2848 len += ret;
2849
2850 /* dot1xAuthDiagTable */
2851 ret = os_snprintf(buf + len, buflen - len,
2852 "dot1xAuthEntersConnecting=%u\n"
2853 "dot1xAuthEapLogoffsWhileConnecting=%u\n"
2854 "dot1xAuthEntersAuthenticating=%u\n"
2855 "dot1xAuthAuthSuccessesWhileAuthenticating=%u\n"
2856 "dot1xAuthAuthTimeoutsWhileAuthenticating=%u\n"
2857 "dot1xAuthAuthFailWhileAuthenticating=%u\n"
2858 "dot1xAuthAuthEapStartsWhileAuthenticating=%u\n"
2859 "dot1xAuthAuthEapLogoffWhileAuthenticating=%u\n"
2860 "dot1xAuthAuthReauthsWhileAuthenticated=%u\n"
2861 "dot1xAuthAuthEapStartsWhileAuthenticated=%u\n"
2862 "dot1xAuthAuthEapLogoffWhileAuthenticated=%u\n"
2863 "dot1xAuthBackendResponses=%u\n"
2864 "dot1xAuthBackendAccessChallenges=%u\n"
2865 "dot1xAuthBackendOtherRequestsToSupplicant=%u\n"
2866 "dot1xAuthBackendAuthSuccesses=%u\n"
2867 "dot1xAuthBackendAuthFails=%u\n",
2868 sm->authEntersConnecting,
2869 sm->authEapLogoffsWhileConnecting,
2870 sm->authEntersAuthenticating,
2871 sm->authAuthSuccessesWhileAuthenticating,
2872 sm->authAuthTimeoutsWhileAuthenticating,
2873 sm->authAuthFailWhileAuthenticating,
2874 sm->authAuthEapStartsWhileAuthenticating,
2875 sm->authAuthEapLogoffWhileAuthenticating,
2876 sm->authAuthReauthsWhileAuthenticated,
2877 sm->authAuthEapStartsWhileAuthenticated,
2878 sm->authAuthEapLogoffWhileAuthenticated,
2879 sm->backendResponses,
2880 sm->backendAccessChallenges,
2881 sm->backendOtherRequestsToSupplicant,
2882 sm->backendAuthSuccesses,
2883 sm->backendAuthFails);
2884 if (os_snprintf_error(buflen - len, ret))
2885 return len;
2886 len += ret;
2887
2888 /* dot1xAuthSessionStatsTable */
2889 os_reltime_age(&sta->acct_session_start, &diff);
2890 if (sm->eap && !sm->identity) {
2891 const u8 *id;
2892 size_t id_len;
2893
2894 id = eap_get_identity(sm->eap, &id_len);
2895 if (id)
2896 identity_buf = dup_binstr(id, id_len);
2897 }
2898 ret = os_snprintf(buf + len, buflen - len,
2899 /* TODO: dot1xAuthSessionOctetsRx */
2900 /* TODO: dot1xAuthSessionOctetsTx */
2901 /* TODO: dot1xAuthSessionFramesRx */
2902 /* TODO: dot1xAuthSessionFramesTx */
2903 "dot1xAuthSessionId=%016llX\n"
2904 "dot1xAuthSessionAuthenticMethod=%d\n"
2905 "dot1xAuthSessionTime=%u\n"
2906 "dot1xAuthSessionTerminateCause=999\n"
2907 "dot1xAuthSessionUserName=%s\n",
2908 (unsigned long long) sta->acct_session_id,
2909 (wpa_key_mgmt_wpa_ieee8021x(
2910 wpa_auth_sta_key_mgmt(sta->wpa_sm))) ?
2911 1 : 2,
2912 (unsigned int) diff.sec,
2913 sm->identity ? (char *) sm->identity :
2914 (identity_buf ? identity_buf : "N/A"));
2915 os_free(identity_buf);
2916 if (os_snprintf_error(buflen - len, ret))
2917 return len;
2918 len += ret;
2919
2920 if (sm->acct_multi_session_id) {
2921 ret = os_snprintf(buf + len, buflen - len,
2922 "authMultiSessionId=%016llX\n",
2923 (unsigned long long)
2924 sm->acct_multi_session_id);
2925 if (os_snprintf_error(buflen - len, ret))
2926 return len;
2927 len += ret;
2928 }
2929
2930 name1 = eap_server_get_name(0, sm->eap_type_authsrv);
2931 name2 = eap_server_get_name(0, sm->eap_type_supp);
2932 ret = os_snprintf(buf + len, buflen - len,
2933 "last_eap_type_as=%d (%s)\n"
2934 "last_eap_type_sta=%d (%s)\n",
2935 sm->eap_type_authsrv, name1,
2936 sm->eap_type_supp, name2);
2937 if (os_snprintf_error(buflen - len, ret))
2938 return len;
2939 len += ret;
2940
2941 return len;
2942 }
2943
2944
2945 #ifdef CONFIG_HS20
ieee802_1x_wnm_notif_send(void * eloop_ctx,void * timeout_ctx)2946 static void ieee802_1x_wnm_notif_send(void *eloop_ctx, void *timeout_ctx)
2947 {
2948 struct hostapd_data *hapd = eloop_ctx;
2949 struct sta_info *sta = timeout_ctx;
2950
2951 if (sta->remediation) {
2952 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2953 MACSTR " to indicate Subscription Remediation",
2954 MAC2STR(sta->addr));
2955 hs20_send_wnm_notification(hapd, sta->addr,
2956 sta->remediation_method,
2957 sta->remediation_url);
2958 os_free(sta->remediation_url);
2959 sta->remediation_url = NULL;
2960 }
2961
2962 if (sta->hs20_deauth_req) {
2963 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2964 MACSTR " to indicate imminent deauthentication",
2965 MAC2STR(sta->addr));
2966 hs20_send_wnm_notification_deauth_req(hapd, sta->addr,
2967 sta->hs20_deauth_req);
2968 }
2969
2970 if (sta->hs20_t_c_filtering) {
2971 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2972 MACSTR " to indicate Terms and Conditions filtering",
2973 MAC2STR(sta->addr));
2974 hs20_send_wnm_notification_t_c(hapd, sta->addr, sta->t_c_url);
2975 os_free(sta->t_c_url);
2976 sta->t_c_url = NULL;
2977 }
2978 }
2979 #endif /* CONFIG_HS20 */
2980
2981
ieee802_1x_finished(struct hostapd_data * hapd,struct sta_info * sta,int success,int remediation,bool logoff)2982 static bool ieee802_1x_finished(struct hostapd_data *hapd,
2983 struct sta_info *sta, int success,
2984 int remediation, bool logoff)
2985 {
2986 const u8 *key;
2987 size_t len;
2988 /* TODO: get PMKLifetime from WPA parameters */
2989 static const int dot11RSNAConfigPMKLifetime = 43200;
2990 unsigned int session_timeout;
2991 struct os_reltime now, remaining;
2992
2993 #ifdef CONFIG_HS20
2994 if (remediation && !sta->remediation) {
2995 sta->remediation = 1;
2996 os_free(sta->remediation_url);
2997 sta->remediation_url =
2998 os_strdup(hapd->conf->subscr_remediation_url);
2999 sta->remediation_method = 1; /* SOAP-XML SPP */
3000 }
3001
3002 if (success && (sta->remediation || sta->hs20_deauth_req ||
3003 sta->hs20_t_c_filtering)) {
3004 wpa_printf(MSG_DEBUG, "HS 2.0: Schedule WNM-Notification to "
3005 MACSTR " in 100 ms", MAC2STR(sta->addr));
3006 eloop_cancel_timeout(ieee802_1x_wnm_notif_send, hapd, sta);
3007 eloop_register_timeout(0, 100000, ieee802_1x_wnm_notif_send,
3008 hapd, sta);
3009 }
3010 #endif /* CONFIG_HS20 */
3011
3012 #ifdef CONFIG_MACSEC
3013 ieee802_1x_notify_create_actor_hapd(hapd, sta);
3014 #endif /* CONFIG_MACSEC */
3015
3016 key = ieee802_1x_get_key(sta->eapol_sm, &len);
3017 if (sta->session_timeout_set) {
3018 os_get_reltime(&now);
3019 os_reltime_sub(&sta->session_timeout, &now, &remaining);
3020 session_timeout = (remaining.sec > 0) ? remaining.sec : 1;
3021 } else {
3022 session_timeout = dot11RSNAConfigPMKLifetime;
3023 }
3024 if (success && key && len >= PMK_LEN && !sta->remediation &&
3025 !sta->hs20_deauth_requested &&
3026 wpa_auth_pmksa_add(sta->wpa_sm, key, len, session_timeout,
3027 sta->eapol_sm) == 0) {
3028 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
3029 HOSTAPD_LEVEL_DEBUG,
3030 "Added PMKSA cache entry (IEEE 802.1X)");
3031 }
3032
3033 if (!success) {
3034 /*
3035 * Many devices require deauthentication after WPS provisioning
3036 * and some may not be be able to do that themselves, so
3037 * disconnect the client here. In addition, this may also
3038 * benefit IEEE 802.1X/EAPOL authentication cases, too since
3039 * the EAPOL PAE state machine would remain in HELD state for
3040 * considerable amount of time and some EAP methods, like
3041 * EAP-FAST with anonymous provisioning, may require another
3042 * EAPOL authentication to be started to complete connection.
3043 */
3044 ap_sta_delayed_1x_auth_fail_disconnect(hapd, sta,
3045 logoff ? 0 : 10);
3046 if (logoff && sta->wpa_sm)
3047 return true;
3048 }
3049
3050 return false;
3051 }
3052