1 /*
2 * hostapd / IEEE 802.1X-2004 Authenticator
3 * Copyright (c) 2002-2019, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "utils/includes.h"
10 #ifdef CONFIG_SQLITE
11 #include <sqlite3.h>
12 #endif /* CONFIG_SQLITE */
13
14 #include "utils/common.h"
15 #include "utils/eloop.h"
16 #include "crypto/md5.h"
17 #include "crypto/crypto.h"
18 #include "crypto/random.h"
19 #include "common/ieee802_11_defs.h"
20 #include "radius/radius.h"
21 #include "radius/radius_client.h"
22 #include "eap_server/eap.h"
23 #include "eap_common/eap_wsc_common.h"
24 #include "eapol_auth/eapol_auth_sm.h"
25 #include "eapol_auth/eapol_auth_sm_i.h"
26 #include "p2p/p2p.h"
27 #include "hostapd.h"
28 #include "accounting.h"
29 #include "sta_info.h"
30 #include "wpa_auth.h"
31 #include "preauth_auth.h"
32 #include "pmksa_cache_auth.h"
33 #include "ap_config.h"
34 #include "ap_drv_ops.h"
35 #include "wps_hostapd.h"
36 #include "hs20.h"
37 /* FIX: Not really a good thing to require ieee802_11.h here.. (FILS) */
38 #include "ieee802_11.h"
39 #include "ieee802_1x.h"
40 #include "wpa_auth_kay.h"
41
42
43 #ifdef CONFIG_HS20
44 static void ieee802_1x_wnm_notif_send(void *eloop_ctx, void *timeout_ctx);
45 #endif /* CONFIG_HS20 */
46 static void ieee802_1x_finished(struct hostapd_data *hapd,
47 struct sta_info *sta, int success,
48 int remediation);
49
50
ieee802_1x_send(struct hostapd_data * hapd,struct sta_info * sta,u8 type,const u8 * data,size_t datalen)51 static void ieee802_1x_send(struct hostapd_data *hapd, struct sta_info *sta,
52 u8 type, const u8 *data, size_t datalen)
53 {
54 u8 *buf;
55 struct ieee802_1x_hdr *xhdr;
56 size_t len;
57 int encrypt = 0;
58
59 len = sizeof(*xhdr) + datalen;
60 buf = os_zalloc(len);
61 if (buf == NULL) {
62 wpa_printf(MSG_ERROR, "malloc() failed for "
63 "ieee802_1x_send(len=%lu)",
64 (unsigned long) len);
65 return;
66 }
67
68 xhdr = (struct ieee802_1x_hdr *) buf;
69 xhdr->version = hapd->conf->eapol_version;
70 #ifdef CONFIG_MACSEC
71 if (xhdr->version > 2 && hapd->conf->macsec_policy == 0)
72 xhdr->version = 2;
73 #endif /* CONFIG_MACSEC */
74 xhdr->type = type;
75 xhdr->length = host_to_be16(datalen);
76
77 if (datalen > 0 && data != NULL)
78 os_memcpy(xhdr + 1, data, datalen);
79
80 if (wpa_auth_pairwise_set(sta->wpa_sm))
81 encrypt = 1;
82 #ifdef CONFIG_TESTING_OPTIONS
83 if (hapd->ext_eapol_frame_io) {
84 size_t hex_len = 2 * len + 1;
85 char *hex = os_malloc(hex_len);
86
87 if (hex) {
88 wpa_snprintf_hex(hex, hex_len, buf, len);
89 wpa_msg(hapd->msg_ctx, MSG_INFO,
90 "EAPOL-TX " MACSTR " %s",
91 MAC2STR(sta->addr), hex);
92 os_free(hex);
93 }
94 } else
95 #endif /* CONFIG_TESTING_OPTIONS */
96 if (sta->flags & WLAN_STA_PREAUTH) {
97 rsn_preauth_send(hapd, sta, buf, len);
98 } else {
99 hostapd_drv_hapd_send_eapol(
100 hapd, sta->addr, buf, len,
101 encrypt, hostapd_sta_flags_to_drv(sta->flags));
102 }
103
104 os_free(buf);
105 }
106
107
ieee802_1x_set_sta_authorized(struct hostapd_data * hapd,struct sta_info * sta,int authorized)108 void ieee802_1x_set_sta_authorized(struct hostapd_data *hapd,
109 struct sta_info *sta, int authorized)
110 {
111 int res;
112
113 if (sta->flags & WLAN_STA_PREAUTH)
114 return;
115
116 if (authorized) {
117 ap_sta_set_authorized(hapd, sta, 1);
118 res = hostapd_set_authorized(hapd, sta, 1);
119 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
120 HOSTAPD_LEVEL_DEBUG, "authorizing port");
121 } else {
122 ap_sta_set_authorized(hapd, sta, 0);
123 res = hostapd_set_authorized(hapd, sta, 0);
124 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
125 HOSTAPD_LEVEL_DEBUG, "unauthorizing port");
126 }
127
128 if (res && errno != ENOENT) {
129 wpa_printf(MSG_DEBUG, "Could not set station " MACSTR
130 " flags for kernel driver (errno=%d).",
131 MAC2STR(sta->addr), errno);
132 }
133
134 if (authorized) {
135 os_get_reltime(&sta->connected_time);
136 accounting_sta_start(hapd, sta);
137 }
138 }
139
140
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 == NULL)
156 return;
157
158 len = sizeof(*key) + key_len;
159 buf = os_zalloc(sizeof(*hdr) + len);
160 if (buf == NULL)
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 == NULL || sm->eap_if->eapKeyDataLen < 64) {
202 wpa_printf(MSG_ERROR, "No eapKeyData available for encrypting "
203 "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 == NULL) {
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 == NULL || !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 ikey = os_malloc(hapd->conf->individual_wep_key_len);
269 if (ikey == NULL ||
270 random_get_bytes(ikey, hapd->conf->individual_wep_key_len))
271 {
272 wpa_printf(MSG_ERROR, "Could not generate random "
273 "individual WEP key.");
274 os_free(ikey);
275 return;
276 }
277
278 wpa_hexdump_key(MSG_DEBUG, "Individual WEP key",
279 ikey, hapd->conf->individual_wep_key_len);
280
281 ieee802_1x_tx_key_one(hapd, sta, 0, 0, ikey,
282 hapd->conf->individual_wep_key_len);
283
284 /* TODO: set encryption in TX callback, i.e., only after STA
285 * has ACKed EAPOL-Key frame */
286 if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
287 sta->addr, 0, 1, NULL, 0, ikey,
288 hapd->conf->individual_wep_key_len)) {
289 wpa_printf(MSG_ERROR, "Could not set individual WEP "
290 "encryption.");
291 }
292
293 os_free(ikey);
294 }
295 }
296
297 #endif /* CONFIG_NO_RC4 */
298 #endif /* CONFIG_FIPS */
299
300
radius_mode_txt(struct hostapd_data * hapd)301 const char *radius_mode_txt(struct hostapd_data *hapd)
302 {
303 switch (hapd->iface->conf->hw_mode) {
304 case HOSTAPD_MODE_IEEE80211AD:
305 return "802.11ad";
306 case HOSTAPD_MODE_IEEE80211A:
307 return "802.11a";
308 case HOSTAPD_MODE_IEEE80211G:
309 return "802.11g";
310 case HOSTAPD_MODE_IEEE80211B:
311 default:
312 return "802.11b";
313 }
314 }
315
316
radius_sta_rate(struct hostapd_data * hapd,struct sta_info * sta)317 int radius_sta_rate(struct hostapd_data *hapd, struct sta_info *sta)
318 {
319 int i;
320 u8 rate = 0;
321
322 for (i = 0; i < sta->supported_rates_len; i++)
323 if ((sta->supported_rates[i] & 0x7f) > rate)
324 rate = sta->supported_rates[i] & 0x7f;
325
326 return rate;
327 }
328
329
330 #ifndef CONFIG_NO_RADIUS
ieee802_1x_learn_identity(struct hostapd_data * hapd,struct eapol_state_machine * sm,const u8 * eap,size_t len)331 static void ieee802_1x_learn_identity(struct hostapd_data *hapd,
332 struct eapol_state_machine *sm,
333 const u8 *eap, size_t len)
334 {
335 const u8 *identity;
336 size_t identity_len;
337 const struct eap_hdr *hdr = (const struct eap_hdr *) eap;
338
339 if (len <= sizeof(struct eap_hdr) ||
340 (hdr->code == EAP_CODE_RESPONSE &&
341 eap[sizeof(struct eap_hdr)] != EAP_TYPE_IDENTITY) ||
342 (hdr->code == EAP_CODE_INITIATE &&
343 eap[sizeof(struct eap_hdr)] != EAP_ERP_TYPE_REAUTH) ||
344 (hdr->code != EAP_CODE_RESPONSE &&
345 hdr->code != EAP_CODE_INITIATE))
346 return;
347
348 eap_erp_update_identity(sm->eap, eap, len);
349 identity = eap_get_identity(sm->eap, &identity_len);
350 if (identity == NULL)
351 return;
352
353 /* Save station identity for future RADIUS packets */
354 os_free(sm->identity);
355 sm->identity = (u8 *) dup_binstr(identity, identity_len);
356 if (sm->identity == NULL) {
357 sm->identity_len = 0;
358 return;
359 }
360
361 sm->identity_len = identity_len;
362 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
363 HOSTAPD_LEVEL_DEBUG, "STA identity '%s'", sm->identity);
364 sm->dot1xAuthEapolRespIdFramesRx++;
365 }
366
367
add_common_radius_sta_attr_rsn(struct hostapd_data * hapd,struct hostapd_radius_attr * req_attr,struct sta_info * sta,struct radius_msg * msg)368 static int add_common_radius_sta_attr_rsn(struct hostapd_data *hapd,
369 struct hostapd_radius_attr *req_attr,
370 struct sta_info *sta,
371 struct radius_msg *msg)
372 {
373 u32 suite;
374 int ver, val;
375
376 ver = wpa_auth_sta_wpa_version(sta->wpa_sm);
377 val = wpa_auth_get_pairwise(sta->wpa_sm);
378 suite = wpa_cipher_to_suite(ver, val);
379 if (val != -1 &&
380 !hostapd_config_get_radius_attr(req_attr,
381 RADIUS_ATTR_WLAN_PAIRWISE_CIPHER) &&
382 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_PAIRWISE_CIPHER,
383 suite)) {
384 wpa_printf(MSG_ERROR, "Could not add WLAN-Pairwise-Cipher");
385 return -1;
386 }
387
388 suite = wpa_cipher_to_suite(((hapd->conf->wpa & 0x2) ||
389 hapd->conf->osen) ?
390 WPA_PROTO_RSN : WPA_PROTO_WPA,
391 hapd->conf->wpa_group);
392 if (!hostapd_config_get_radius_attr(req_attr,
393 RADIUS_ATTR_WLAN_GROUP_CIPHER) &&
394 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_GROUP_CIPHER,
395 suite)) {
396 wpa_printf(MSG_ERROR, "Could not add WLAN-Group-Cipher");
397 return -1;
398 }
399
400 val = wpa_auth_sta_key_mgmt(sta->wpa_sm);
401 suite = wpa_akm_to_suite(val);
402 if (val != -1 &&
403 !hostapd_config_get_radius_attr(req_attr,
404 RADIUS_ATTR_WLAN_AKM_SUITE) &&
405 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_WLAN_AKM_SUITE,
406 suite)) {
407 wpa_printf(MSG_ERROR, "Could not add WLAN-AKM-Suite");
408 return -1;
409 }
410
411 #ifdef CONFIG_IEEE80211W
412 if (hapd->conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
413 suite = wpa_cipher_to_suite(WPA_PROTO_RSN,
414 hapd->conf->group_mgmt_cipher);
415 if (!hostapd_config_get_radius_attr(
416 req_attr, RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER) &&
417 !radius_msg_add_attr_int32(
418 msg, RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER, suite)) {
419 wpa_printf(MSG_ERROR,
420 "Could not add WLAN-Group-Mgmt-Cipher");
421 return -1;
422 }
423 }
424 #endif /* CONFIG_IEEE80211W */
425
426 return 0;
427 }
428
429
add_common_radius_sta_attr(struct hostapd_data * hapd,struct hostapd_radius_attr * req_attr,struct sta_info * sta,struct radius_msg * msg)430 static int add_common_radius_sta_attr(struct hostapd_data *hapd,
431 struct hostapd_radius_attr *req_attr,
432 struct sta_info *sta,
433 struct radius_msg *msg)
434 {
435 char buf[128];
436
437 if (!hostapd_config_get_radius_attr(req_attr,
438 RADIUS_ATTR_SERVICE_TYPE) &&
439 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_SERVICE_TYPE,
440 RADIUS_SERVICE_TYPE_FRAMED)) {
441 wpa_printf(MSG_ERROR, "Could not add Service-Type");
442 return -1;
443 }
444
445 if (!hostapd_config_get_radius_attr(req_attr,
446 RADIUS_ATTR_NAS_PORT) &&
447 sta->aid > 0 &&
448 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT, sta->aid)) {
449 wpa_printf(MSG_ERROR, "Could not add NAS-Port");
450 return -1;
451 }
452
453 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
454 MAC2STR(sta->addr));
455 buf[sizeof(buf) - 1] = '\0';
456 if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
457 (u8 *) buf, os_strlen(buf))) {
458 wpa_printf(MSG_ERROR, "Could not add Calling-Station-Id");
459 return -1;
460 }
461
462 if (sta->flags & WLAN_STA_PREAUTH) {
463 os_strlcpy(buf, "IEEE 802.11i Pre-Authentication",
464 sizeof(buf));
465 } else {
466 os_snprintf(buf, sizeof(buf), "CONNECT %d%sMbps %s",
467 radius_sta_rate(hapd, sta) / 2,
468 (radius_sta_rate(hapd, sta) & 1) ? ".5" : "",
469 radius_mode_txt(hapd));
470 buf[sizeof(buf) - 1] = '\0';
471 }
472 if (!hostapd_config_get_radius_attr(req_attr,
473 RADIUS_ATTR_CONNECT_INFO) &&
474 !radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
475 (u8 *) buf, os_strlen(buf))) {
476 wpa_printf(MSG_ERROR, "Could not add Connect-Info");
477 return -1;
478 }
479
480 if (sta->acct_session_id) {
481 os_snprintf(buf, sizeof(buf), "%016llX",
482 (unsigned long long) sta->acct_session_id);
483 if (!radius_msg_add_attr(msg, RADIUS_ATTR_ACCT_SESSION_ID,
484 (u8 *) buf, os_strlen(buf))) {
485 wpa_printf(MSG_ERROR, "Could not add Acct-Session-Id");
486 return -1;
487 }
488 }
489
490 if ((hapd->conf->wpa & 2) &&
491 !hapd->conf->disable_pmksa_caching &&
492 sta->eapol_sm && sta->eapol_sm->acct_multi_session_id) {
493 os_snprintf(buf, sizeof(buf), "%016llX",
494 (unsigned long long)
495 sta->eapol_sm->acct_multi_session_id);
496 if (!radius_msg_add_attr(
497 msg, RADIUS_ATTR_ACCT_MULTI_SESSION_ID,
498 (u8 *) buf, os_strlen(buf))) {
499 wpa_printf(MSG_INFO,
500 "Could not add Acct-Multi-Session-Id");
501 return -1;
502 }
503 }
504
505 #ifdef CONFIG_IEEE80211R_AP
506 if (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) &&
507 sta->wpa_sm &&
508 (wpa_key_mgmt_ft(wpa_auth_sta_key_mgmt(sta->wpa_sm)) ||
509 sta->auth_alg == WLAN_AUTH_FT) &&
510 !hostapd_config_get_radius_attr(req_attr,
511 RADIUS_ATTR_MOBILITY_DOMAIN_ID) &&
512 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_MOBILITY_DOMAIN_ID,
513 WPA_GET_BE16(
514 hapd->conf->mobility_domain))) {
515 wpa_printf(MSG_ERROR, "Could not add Mobility-Domain-Id");
516 return -1;
517 }
518 #endif /* CONFIG_IEEE80211R_AP */
519
520 if ((hapd->conf->wpa || hapd->conf->osen) && sta->wpa_sm &&
521 add_common_radius_sta_attr_rsn(hapd, req_attr, sta, msg) < 0)
522 return -1;
523
524 return 0;
525 }
526
527
add_common_radius_attr(struct hostapd_data * hapd,struct hostapd_radius_attr * req_attr,struct sta_info * sta,struct radius_msg * msg)528 int add_common_radius_attr(struct hostapd_data *hapd,
529 struct hostapd_radius_attr *req_attr,
530 struct sta_info *sta,
531 struct radius_msg *msg)
532 {
533 char buf[128];
534 struct hostapd_radius_attr *attr;
535 int len;
536
537 if (!hostapd_config_get_radius_attr(req_attr,
538 RADIUS_ATTR_NAS_IP_ADDRESS) &&
539 hapd->conf->own_ip_addr.af == AF_INET &&
540 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
541 (u8 *) &hapd->conf->own_ip_addr.u.v4, 4)) {
542 wpa_printf(MSG_ERROR, "Could not add NAS-IP-Address");
543 return -1;
544 }
545
546 #ifdef CONFIG_IPV6
547 if (!hostapd_config_get_radius_attr(req_attr,
548 RADIUS_ATTR_NAS_IPV6_ADDRESS) &&
549 hapd->conf->own_ip_addr.af == AF_INET6 &&
550 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IPV6_ADDRESS,
551 (u8 *) &hapd->conf->own_ip_addr.u.v6, 16)) {
552 wpa_printf(MSG_ERROR, "Could not add NAS-IPv6-Address");
553 return -1;
554 }
555 #endif /* CONFIG_IPV6 */
556
557 if (!hostapd_config_get_radius_attr(req_attr,
558 RADIUS_ATTR_NAS_IDENTIFIER) &&
559 hapd->conf->nas_identifier &&
560 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IDENTIFIER,
561 (u8 *) hapd->conf->nas_identifier,
562 os_strlen(hapd->conf->nas_identifier))) {
563 wpa_printf(MSG_ERROR, "Could not add NAS-Identifier");
564 return -1;
565 }
566
567 len = os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT ":",
568 MAC2STR(hapd->own_addr));
569 os_memcpy(&buf[len], hapd->conf->ssid.ssid,
570 hapd->conf->ssid.ssid_len);
571 len += hapd->conf->ssid.ssid_len;
572 if (!hostapd_config_get_radius_attr(req_attr,
573 RADIUS_ATTR_CALLED_STATION_ID) &&
574 !radius_msg_add_attr(msg, RADIUS_ATTR_CALLED_STATION_ID,
575 (u8 *) buf, len)) {
576 wpa_printf(MSG_ERROR, "Could not add Called-Station-Id");
577 return -1;
578 }
579
580 if (!hostapd_config_get_radius_attr(req_attr,
581 RADIUS_ATTR_NAS_PORT_TYPE) &&
582 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
583 RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
584 wpa_printf(MSG_ERROR, "Could not add NAS-Port-Type");
585 return -1;
586 }
587
588 #ifdef CONFIG_INTERWORKING
589 if (hapd->conf->interworking &&
590 !is_zero_ether_addr(hapd->conf->hessid)) {
591 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
592 MAC2STR(hapd->conf->hessid));
593 buf[sizeof(buf) - 1] = '\0';
594 if (!hostapd_config_get_radius_attr(req_attr,
595 RADIUS_ATTR_WLAN_HESSID) &&
596 !radius_msg_add_attr(msg, RADIUS_ATTR_WLAN_HESSID,
597 (u8 *) buf, os_strlen(buf))) {
598 wpa_printf(MSG_ERROR, "Could not add WLAN-HESSID");
599 return -1;
600 }
601 }
602 #endif /* CONFIG_INTERWORKING */
603
604 if (sta && add_common_radius_sta_attr(hapd, req_attr, sta, msg) < 0)
605 return -1;
606
607 for (attr = req_attr; attr; attr = attr->next) {
608 if (!radius_msg_add_attr(msg, attr->type,
609 wpabuf_head(attr->val),
610 wpabuf_len(attr->val))) {
611 wpa_printf(MSG_ERROR, "Could not add RADIUS "
612 "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 == NULL)
686 return;
687
688 ieee802_1x_learn_identity(hapd, sm, eap, len);
689
690 wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
691 "packet");
692
693 sm->radius_identifier = radius_client_get_id(hapd->radius);
694 msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
695 sm->radius_identifier);
696 if (msg == NULL) {
697 wpa_printf(MSG_INFO, "Could not create new RADIUS packet");
698 return;
699 }
700
701 if (radius_msg_make_authenticator(msg) < 0) {
702 wpa_printf(MSG_INFO, "Could not make Request Authenticator");
703 goto fail;
704 }
705
706 if (sm->identity &&
707 !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
708 sm->identity, sm->identity_len)) {
709 wpa_printf(MSG_INFO, "Could not add User-Name");
710 goto fail;
711 }
712
713 if (add_common_radius_attr(hapd, hapd->conf->radius_auth_req_attr, sta,
714 msg) < 0)
715 goto fail;
716
717 if (sta && add_sqlite_radius_attr(hapd, sta, msg, 0) < 0)
718 goto fail;
719
720 /* TODO: should probably check MTU from driver config; 2304 is max for
721 * IEEE 802.11, but use 1400 to avoid problems with too large packets
722 */
723 if (!hostapd_config_get_radius_attr(hapd->conf->radius_auth_req_attr,
724 RADIUS_ATTR_FRAMED_MTU) &&
725 !radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
726 wpa_printf(MSG_INFO, "Could not add Framed-MTU");
727 goto fail;
728 }
729
730 if (!radius_msg_add_eap(msg, eap, len)) {
731 wpa_printf(MSG_INFO, "Could not add EAP-Message");
732 goto fail;
733 }
734
735 /* State attribute must be copied if and only if this packet is
736 * Access-Request reply to the previous Access-Challenge */
737 if (sm->last_recv_radius &&
738 radius_msg_get_hdr(sm->last_recv_radius)->code ==
739 RADIUS_CODE_ACCESS_CHALLENGE) {
740 int res = radius_msg_copy_attr(msg, sm->last_recv_radius,
741 RADIUS_ATTR_STATE);
742 if (res < 0) {
743 wpa_printf(MSG_INFO, "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
751 if (hapd->conf->radius_request_cui) {
752 const u8 *cui;
753 size_t cui_len;
754 /* Add previously learned CUI or nul CUI to request CUI */
755 if (sm->radius_cui) {
756 cui = wpabuf_head(sm->radius_cui);
757 cui_len = wpabuf_len(sm->radius_cui);
758 } else {
759 cui = (const u8 *) "\0";
760 cui_len = 1;
761 }
762 if (!radius_msg_add_attr(msg,
763 RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
764 cui, cui_len)) {
765 wpa_printf(MSG_ERROR, "Could not add CUI");
766 goto fail;
767 }
768 }
769
770 #ifdef CONFIG_HS20
771 if (hapd->conf->hs20) {
772 u8 ver = hapd->conf->hs20_release - 1;
773
774 if (!radius_msg_add_wfa(
775 msg, RADIUS_VENDOR_ATTR_WFA_HS20_AP_VERSION,
776 &ver, 1)) {
777 wpa_printf(MSG_ERROR, "Could not add HS 2.0 AP "
778 "version");
779 goto fail;
780 }
781
782 if (sta->hs20_ie && wpabuf_len(sta->hs20_ie) > 0) {
783 const u8 *pos;
784 u8 buf[3];
785 u16 id;
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, "Could not add HS 2.0 "
799 "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 if (sm == NULL)
859 return;
860
861 data = (u8 *) (eap + 1);
862
863 if (len < sizeof(*eap) + 1) {
864 wpa_printf(MSG_INFO, "handle_eap_response: too short response data");
865 return;
866 }
867
868 sm->eap_type_supp = type = data[0];
869
870 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
871 HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
872 "id=%d len=%d) from STA: EAP Response-%s (%d)",
873 eap->code, eap->identifier, be_to_host16(eap->length),
874 eap_server_get_name(0, type), type);
875
876 sm->dot1xAuthEapolRespFramesRx++;
877
878 wpabuf_free(sm->eap_if->eapRespData);
879 sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
880 sm->eapolEap = TRUE;
881 }
882
883
handle_eap_initiate(struct hostapd_data * hapd,struct sta_info * sta,struct eap_hdr * eap,size_t len)884 static void handle_eap_initiate(struct hostapd_data *hapd,
885 struct sta_info *sta, struct eap_hdr *eap,
886 size_t len)
887 {
888 #ifdef CONFIG_ERP
889 u8 type, *data;
890 struct eapol_state_machine *sm = sta->eapol_sm;
891
892 if (sm == NULL)
893 return;
894
895 if (len < sizeof(*eap) + 1) {
896 wpa_printf(MSG_INFO,
897 "handle_eap_initiate: too short response data");
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, "received EAP packet (code=%d "
906 "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 /* Process incoming EAP packet from Supplicant */
handle_eap(struct hostapd_data * hapd,struct sta_info * sta,u8 * buf,size_t len)918 static void handle_eap(struct hostapd_data *hapd, struct sta_info *sta,
919 u8 *buf, size_t len)
920 {
921 struct eap_hdr *eap;
922 u16 eap_len;
923
924 if (len < sizeof(*eap)) {
925 wpa_printf(MSG_INFO, " too short EAP packet");
926 return;
927 }
928
929 eap = (struct eap_hdr *) buf;
930
931 eap_len = be_to_host16(eap->length);
932 wpa_printf(MSG_DEBUG, "EAP: code=%d identifier=%d length=%d",
933 eap->code, eap->identifier, eap_len);
934 if (eap_len < sizeof(*eap)) {
935 wpa_printf(MSG_DEBUG, " Invalid EAP length");
936 return;
937 } else if (eap_len > len) {
938 wpa_printf(MSG_DEBUG, " Too short frame to contain this EAP "
939 "packet");
940 return;
941 } else if (eap_len < len) {
942 wpa_printf(MSG_DEBUG, " Ignoring %lu extra bytes after EAP "
943 "packet", (unsigned long) len - eap_len);
944 }
945
946 switch (eap->code) {
947 case EAP_CODE_REQUEST:
948 wpa_printf(MSG_DEBUG, " (request)");
949 return;
950 case EAP_CODE_RESPONSE:
951 wpa_printf(MSG_DEBUG, " (response)");
952 handle_eap_response(hapd, sta, eap, eap_len);
953 break;
954 case EAP_CODE_SUCCESS:
955 wpa_printf(MSG_DEBUG, " (success)");
956 return;
957 case EAP_CODE_FAILURE:
958 wpa_printf(MSG_DEBUG, " (failure)");
959 return;
960 case EAP_CODE_INITIATE:
961 wpa_printf(MSG_DEBUG, " (initiate)");
962 handle_eap_initiate(hapd, sta, eap, eap_len);
963 break;
964 case EAP_CODE_FINISH:
965 wpa_printf(MSG_DEBUG, " (finish)");
966 break;
967 default:
968 wpa_printf(MSG_DEBUG, " (unknown code)");
969 return;
970 }
971 }
972
973
974 struct eapol_state_machine *
ieee802_1x_alloc_eapol_sm(struct hostapd_data * hapd,struct sta_info * sta)975 ieee802_1x_alloc_eapol_sm(struct hostapd_data *hapd, struct sta_info *sta)
976 {
977 int flags = 0;
978 if (sta->flags & WLAN_STA_PREAUTH)
979 flags |= EAPOL_SM_PREAUTH;
980 if (sta->wpa_sm) {
981 flags |= EAPOL_SM_USES_WPA;
982 if (wpa_auth_sta_get_pmksa(sta->wpa_sm))
983 flags |= EAPOL_SM_FROM_PMKSA_CACHE;
984 }
985 return eapol_auth_alloc(hapd->eapol_auth, sta->addr, flags,
986 sta->wps_ie, sta->p2p_ie, sta,
987 sta->identity, sta->radius_cui);
988 }
989
990
ieee802_1x_save_eapol(struct sta_info * sta,const u8 * buf,size_t len)991 static void ieee802_1x_save_eapol(struct sta_info *sta, const u8 *buf,
992 size_t len)
993 {
994 if (sta->pending_eapol_rx) {
995 wpabuf_free(sta->pending_eapol_rx->buf);
996 } else {
997 sta->pending_eapol_rx =
998 os_malloc(sizeof(*sta->pending_eapol_rx));
999 if (!sta->pending_eapol_rx)
1000 return;
1001 }
1002
1003 sta->pending_eapol_rx->buf = wpabuf_alloc_copy(buf, len);
1004 if (!sta->pending_eapol_rx->buf) {
1005 os_free(sta->pending_eapol_rx);
1006 sta->pending_eapol_rx = NULL;
1007 return;
1008 }
1009
1010 os_get_reltime(&sta->pending_eapol_rx->rx_time);
1011 }
1012
1013
1014 /**
1015 * ieee802_1x_receive - Process the EAPOL frames from the Supplicant
1016 * @hapd: hostapd BSS data
1017 * @sa: Source address (sender of the EAPOL frame)
1018 * @buf: EAPOL frame
1019 * @len: Length of buf in octets
1020 *
1021 * This function is called for each incoming EAPOL frame from the interface
1022 */
ieee802_1x_receive(struct hostapd_data * hapd,const u8 * sa,const u8 * buf,size_t len)1023 void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf,
1024 size_t len)
1025 {
1026 struct sta_info *sta;
1027 struct ieee802_1x_hdr *hdr;
1028 struct ieee802_1x_eapol_key *key;
1029 u16 datalen;
1030 struct rsn_pmksa_cache_entry *pmksa;
1031 int key_mgmt;
1032
1033 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen &&
1034 !hapd->conf->wps_state)
1035 return;
1036
1037 wpa_printf(MSG_DEBUG, "IEEE 802.1X: %lu bytes from " MACSTR,
1038 (unsigned long) len, MAC2STR(sa));
1039 sta = ap_get_sta(hapd, sa);
1040 if (!sta || (!(sta->flags & (WLAN_STA_ASSOC | WLAN_STA_PREAUTH)) &&
1041 !(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED))) {
1042 wpa_printf(MSG_DEBUG, "IEEE 802.1X data frame from not "
1043 "associated/Pre-authenticating STA");
1044
1045 if (sta && (sta->flags & WLAN_STA_AUTH)) {
1046 wpa_printf(MSG_DEBUG, "Saving EAPOL frame from " MACSTR
1047 " for later use", MAC2STR(sta->addr));
1048 ieee802_1x_save_eapol(sta, buf, len);
1049 }
1050
1051 return;
1052 }
1053
1054 if (len < sizeof(*hdr)) {
1055 wpa_printf(MSG_INFO, " too short IEEE 802.1X packet");
1056 return;
1057 }
1058
1059 hdr = (struct ieee802_1x_hdr *) buf;
1060 datalen = be_to_host16(hdr->length);
1061 wpa_printf(MSG_DEBUG, " IEEE 802.1X: version=%d type=%d length=%d",
1062 hdr->version, hdr->type, datalen);
1063
1064 if (len - sizeof(*hdr) < datalen) {
1065 wpa_printf(MSG_INFO, " frame too short for this IEEE 802.1X packet");
1066 if (sta->eapol_sm)
1067 sta->eapol_sm->dot1xAuthEapLengthErrorFramesRx++;
1068 return;
1069 }
1070 if (len - sizeof(*hdr) > datalen) {
1071 wpa_printf(MSG_DEBUG, " ignoring %lu extra octets after "
1072 "IEEE 802.1X packet",
1073 (unsigned long) len - sizeof(*hdr) - datalen);
1074 }
1075
1076 if (sta->eapol_sm) {
1077 sta->eapol_sm->dot1xAuthLastEapolFrameVersion = hdr->version;
1078 sta->eapol_sm->dot1xAuthEapolFramesRx++;
1079 }
1080
1081 key = (struct ieee802_1x_eapol_key *) (hdr + 1);
1082 if (datalen >= sizeof(struct ieee802_1x_eapol_key) &&
1083 hdr->type == IEEE802_1X_TYPE_EAPOL_KEY &&
1084 (key->type == EAPOL_KEY_TYPE_WPA ||
1085 key->type == EAPOL_KEY_TYPE_RSN)) {
1086 wpa_receive(hapd->wpa_auth, sta->wpa_sm, (u8 *) hdr,
1087 sizeof(*hdr) + datalen);
1088 return;
1089 }
1090
1091 if (!hapd->conf->ieee802_1x && !hapd->conf->osen &&
1092 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
1093 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
1094 "802.1X not enabled and WPS not used");
1095 return;
1096 }
1097
1098 key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
1099 if (key_mgmt != -1 &&
1100 (wpa_key_mgmt_wpa_psk(key_mgmt) || key_mgmt == WPA_KEY_MGMT_OWE ||
1101 key_mgmt == WPA_KEY_MGMT_DPP)) {
1102 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
1103 "STA is using PSK");
1104 return;
1105 }
1106
1107 if (!sta->eapol_sm) {
1108 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
1109 if (!sta->eapol_sm)
1110 return;
1111
1112 #ifdef CONFIG_WPS
1113 if (!hapd->conf->ieee802_1x && hapd->conf->wps_state) {
1114 u32 wflags = sta->flags & (WLAN_STA_WPS |
1115 WLAN_STA_WPS2 |
1116 WLAN_STA_MAYBE_WPS);
1117 if (wflags == WLAN_STA_MAYBE_WPS ||
1118 wflags == (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) {
1119 /*
1120 * Delay EAPOL frame transmission until a
1121 * possible WPS STA initiates the handshake
1122 * with EAPOL-Start. Only allow the wait to be
1123 * skipped if the STA is known to support WPS
1124 * 2.0.
1125 */
1126 wpa_printf(MSG_DEBUG, "WPS: Do not start "
1127 "EAPOL until EAPOL-Start is "
1128 "received");
1129 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
1130 }
1131 }
1132 #endif /* CONFIG_WPS */
1133
1134 sta->eapol_sm->eap_if->portEnabled = TRUE;
1135 }
1136
1137 /* since we support version 1, we can ignore version field and proceed
1138 * as specified in version 1 standard [IEEE Std 802.1X-2001, 7.5.5] */
1139 /* TODO: actually, we are not version 1 anymore.. However, Version 2
1140 * does not change frame contents, so should be ok to process frames
1141 * more or less identically. Some changes might be needed for
1142 * verification of fields. */
1143
1144 switch (hdr->type) {
1145 case IEEE802_1X_TYPE_EAP_PACKET:
1146 handle_eap(hapd, sta, (u8 *) (hdr + 1), datalen);
1147 break;
1148
1149 case IEEE802_1X_TYPE_EAPOL_START:
1150 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1151 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Start "
1152 "from STA");
1153 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
1154 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
1155 if (pmksa) {
1156 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
1157 HOSTAPD_LEVEL_DEBUG, "cached PMKSA "
1158 "available - ignore it since "
1159 "STA sent EAPOL-Start");
1160 wpa_auth_sta_clear_pmksa(sta->wpa_sm, pmksa);
1161 }
1162 sta->eapol_sm->eapolStart = TRUE;
1163 sta->eapol_sm->dot1xAuthEapolStartFramesRx++;
1164 eap_server_clear_identity(sta->eapol_sm->eap);
1165 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
1166 break;
1167
1168 case IEEE802_1X_TYPE_EAPOL_LOGOFF:
1169 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1170 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Logoff "
1171 "from STA");
1172 sta->acct_terminate_cause =
1173 RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1174 accounting_sta_stop(hapd, sta);
1175 sta->eapol_sm->eapolLogoff = TRUE;
1176 sta->eapol_sm->dot1xAuthEapolLogoffFramesRx++;
1177 eap_server_clear_identity(sta->eapol_sm->eap);
1178 break;
1179
1180 case IEEE802_1X_TYPE_EAPOL_KEY:
1181 wpa_printf(MSG_DEBUG, " EAPOL-Key");
1182 if (!ap_sta_is_authorized(sta)) {
1183 wpa_printf(MSG_DEBUG, " Dropped key data from "
1184 "unauthorized Supplicant");
1185 break;
1186 }
1187 break;
1188
1189 case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT:
1190 wpa_printf(MSG_DEBUG, " EAPOL-Encapsulated-ASF-Alert");
1191 /* TODO: implement support for this; show data */
1192 break;
1193
1194 #ifdef CONFIG_MACSEC
1195 case IEEE802_1X_TYPE_EAPOL_MKA:
1196 wpa_printf(MSG_EXCESSIVE,
1197 "EAPOL type %d will be handled by MKA", hdr->type);
1198 break;
1199 #endif /* CONFIG_MACSEC */
1200
1201 default:
1202 wpa_printf(MSG_DEBUG, " unknown IEEE 802.1X packet type");
1203 sta->eapol_sm->dot1xAuthInvalidEapolFramesRx++;
1204 break;
1205 }
1206
1207 eapol_auth_step(sta->eapol_sm);
1208 }
1209
1210
1211 /**
1212 * ieee802_1x_new_station - Start IEEE 802.1X authentication
1213 * @hapd: hostapd BSS data
1214 * @sta: The station
1215 *
1216 * This function is called to start IEEE 802.1X authentication when a new
1217 * station completes IEEE 802.11 association.
1218 */
ieee802_1x_new_station(struct hostapd_data * hapd,struct sta_info * sta)1219 void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta)
1220 {
1221 struct rsn_pmksa_cache_entry *pmksa;
1222 int reassoc = 1;
1223 int force_1x = 0;
1224 int key_mgmt;
1225
1226 #ifdef CONFIG_WPS
1227 if (hapd->conf->wps_state &&
1228 ((hapd->conf->wpa && (sta->flags & WLAN_STA_MAYBE_WPS)) ||
1229 (sta->flags & WLAN_STA_WPS))) {
1230 /*
1231 * Need to enable IEEE 802.1X/EAPOL state machines for possible
1232 * WPS handshake even if IEEE 802.1X/EAPOL is not used for
1233 * authentication in this BSS.
1234 */
1235 force_1x = 1;
1236 }
1237 #endif /* CONFIG_WPS */
1238
1239 if (!force_1x && !hapd->conf->ieee802_1x && !hapd->conf->osen) {
1240 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - "
1241 "802.1X not enabled or forced for WPS");
1242 /*
1243 * Clear any possible EAPOL authenticator state to support
1244 * reassociation change from WPS to PSK.
1245 */
1246 ieee802_1x_free_station(hapd, sta);
1247 return;
1248 }
1249
1250 key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
1251 if (key_mgmt != -1 &&
1252 (wpa_key_mgmt_wpa_psk(key_mgmt) || key_mgmt == WPA_KEY_MGMT_OWE ||
1253 key_mgmt == WPA_KEY_MGMT_DPP)) {
1254 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - using PSK");
1255 /*
1256 * Clear any possible EAPOL authenticator state to support
1257 * reassociation change from WPA-EAP to PSK.
1258 */
1259 ieee802_1x_free_station(hapd, sta);
1260 return;
1261 }
1262
1263 if (sta->eapol_sm == NULL) {
1264 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1265 HOSTAPD_LEVEL_DEBUG, "start authentication");
1266 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
1267 if (sta->eapol_sm == NULL) {
1268 hostapd_logger(hapd, sta->addr,
1269 HOSTAPD_MODULE_IEEE8021X,
1270 HOSTAPD_LEVEL_INFO,
1271 "failed to allocate state machine");
1272 return;
1273 }
1274 reassoc = 0;
1275 }
1276
1277 #ifdef CONFIG_WPS
1278 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
1279 if (!hapd->conf->ieee802_1x && hapd->conf->wps_state &&
1280 !(sta->flags & WLAN_STA_WPS2)) {
1281 /*
1282 * Delay EAPOL frame transmission until a possible WPS STA
1283 * initiates the handshake with EAPOL-Start. Only allow the
1284 * wait to be skipped if the STA is known to support WPS 2.0.
1285 */
1286 wpa_printf(MSG_DEBUG, "WPS: Do not start EAPOL until "
1287 "EAPOL-Start is received");
1288 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
1289 }
1290 #endif /* CONFIG_WPS */
1291
1292 sta->eapol_sm->eap_if->portEnabled = TRUE;
1293
1294 #ifdef CONFIG_IEEE80211R_AP
1295 if (sta->auth_alg == WLAN_AUTH_FT) {
1296 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1297 HOSTAPD_LEVEL_DEBUG,
1298 "PMK from FT - skip IEEE 802.1X/EAP");
1299 /* Setup EAPOL state machines to already authenticated state
1300 * because of existing FT information from R0KH. */
1301 sta->eapol_sm->keyRun = TRUE;
1302 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1303 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1304 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1305 sta->eapol_sm->authSuccess = TRUE;
1306 sta->eapol_sm->authFail = FALSE;
1307 sta->eapol_sm->portValid = TRUE;
1308 if (sta->eapol_sm->eap)
1309 eap_sm_notify_cached(sta->eapol_sm->eap);
1310 ap_sta_bind_vlan(hapd, sta);
1311 return;
1312 }
1313 #endif /* CONFIG_IEEE80211R_AP */
1314
1315 #ifdef CONFIG_FILS
1316 if (sta->auth_alg == WLAN_AUTH_FILS_SK ||
1317 sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
1318 sta->auth_alg == WLAN_AUTH_FILS_PK) {
1319 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1320 HOSTAPD_LEVEL_DEBUG,
1321 "PMK from FILS - skip IEEE 802.1X/EAP");
1322 /* Setup EAPOL state machines to already authenticated state
1323 * because of existing FILS information. */
1324 sta->eapol_sm->keyRun = TRUE;
1325 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1326 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1327 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1328 sta->eapol_sm->authSuccess = TRUE;
1329 sta->eapol_sm->authFail = FALSE;
1330 sta->eapol_sm->portValid = TRUE;
1331 if (sta->eapol_sm->eap)
1332 eap_sm_notify_cached(sta->eapol_sm->eap);
1333 wpa_auth_set_ptk_rekey_timer(sta->wpa_sm);
1334 return;
1335 }
1336 #endif /* CONFIG_FILS */
1337
1338 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
1339 if (pmksa) {
1340 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1341 HOSTAPD_LEVEL_DEBUG,
1342 "PMK from PMKSA cache - skip IEEE 802.1X/EAP");
1343 /* Setup EAPOL state machines to already authenticated state
1344 * because of existing PMKSA information in the cache. */
1345 sta->eapol_sm->keyRun = TRUE;
1346 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1347 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
1348 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
1349 sta->eapol_sm->authSuccess = TRUE;
1350 sta->eapol_sm->authFail = FALSE;
1351 if (sta->eapol_sm->eap)
1352 eap_sm_notify_cached(sta->eapol_sm->eap);
1353 pmksa_cache_to_eapol_data(hapd, pmksa, sta->eapol_sm);
1354 ap_sta_bind_vlan(hapd, sta);
1355 } else {
1356 if (reassoc) {
1357 /*
1358 * Force EAPOL state machines to start
1359 * re-authentication without having to wait for the
1360 * Supplicant to send EAPOL-Start.
1361 */
1362 sta->eapol_sm->reAuthenticate = TRUE;
1363 }
1364 eapol_auth_step(sta->eapol_sm);
1365 }
1366 }
1367
1368
ieee802_1x_free_station(struct hostapd_data * hapd,struct sta_info * sta)1369 void ieee802_1x_free_station(struct hostapd_data *hapd, struct sta_info *sta)
1370 {
1371 struct eapol_state_machine *sm = sta->eapol_sm;
1372
1373 #ifdef CONFIG_HS20
1374 eloop_cancel_timeout(ieee802_1x_wnm_notif_send, hapd, sta);
1375 #endif /* CONFIG_HS20 */
1376
1377 if (sta->pending_eapol_rx) {
1378 wpabuf_free(sta->pending_eapol_rx->buf);
1379 os_free(sta->pending_eapol_rx);
1380 sta->pending_eapol_rx = NULL;
1381 }
1382
1383 if (sm == NULL)
1384 return;
1385
1386 sta->eapol_sm = NULL;
1387
1388 #ifndef CONFIG_NO_RADIUS
1389 radius_msg_free(sm->last_recv_radius);
1390 radius_free_class(&sm->radius_class);
1391 #endif /* CONFIG_NO_RADIUS */
1392
1393 eapol_auth_free(sm);
1394 }
1395
1396
1397 #ifndef CONFIG_NO_RADIUS
ieee802_1x_decapsulate_radius(struct hostapd_data * hapd,struct sta_info * sta)1398 static void ieee802_1x_decapsulate_radius(struct hostapd_data *hapd,
1399 struct sta_info *sta)
1400 {
1401 struct wpabuf *eap;
1402 const struct eap_hdr *hdr;
1403 int eap_type = -1;
1404 char buf[64];
1405 struct radius_msg *msg;
1406 struct eapol_state_machine *sm = sta->eapol_sm;
1407
1408 if (sm == NULL || sm->last_recv_radius == NULL) {
1409 if (sm)
1410 sm->eap_if->aaaEapNoReq = TRUE;
1411 return;
1412 }
1413
1414 msg = sm->last_recv_radius;
1415
1416 eap = radius_msg_get_eap(msg);
1417 if (eap == NULL) {
1418 /* RFC 3579, Chap. 2.6.3:
1419 * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
1420 * attribute */
1421 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1422 HOSTAPD_LEVEL_WARNING, "could not extract "
1423 "EAP-Message from RADIUS message");
1424 sm->eap_if->aaaEapNoReq = TRUE;
1425 return;
1426 }
1427
1428 if (wpabuf_len(eap) < sizeof(*hdr)) {
1429 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1430 HOSTAPD_LEVEL_WARNING, "too short EAP packet "
1431 "received from authentication server");
1432 wpabuf_free(eap);
1433 sm->eap_if->aaaEapNoReq = TRUE;
1434 return;
1435 }
1436
1437 if (wpabuf_len(eap) > sizeof(*hdr))
1438 eap_type = (wpabuf_head_u8(eap))[sizeof(*hdr)];
1439
1440 hdr = wpabuf_head(eap);
1441 switch (hdr->code) {
1442 case EAP_CODE_REQUEST:
1443 if (eap_type >= 0)
1444 sm->eap_type_authsrv = eap_type;
1445 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
1446 eap_server_get_name(0, eap_type), eap_type);
1447 break;
1448 case EAP_CODE_RESPONSE:
1449 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
1450 eap_server_get_name(0, eap_type), eap_type);
1451 break;
1452 case EAP_CODE_SUCCESS:
1453 os_strlcpy(buf, "EAP Success", sizeof(buf));
1454 break;
1455 case EAP_CODE_FAILURE:
1456 os_strlcpy(buf, "EAP Failure", sizeof(buf));
1457 break;
1458 default:
1459 os_strlcpy(buf, "unknown EAP code", sizeof(buf));
1460 break;
1461 }
1462 buf[sizeof(buf) - 1] = '\0';
1463 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1464 HOSTAPD_LEVEL_DEBUG, "decapsulated EAP packet (code=%d "
1465 "id=%d len=%d) from RADIUS server: %s",
1466 hdr->code, hdr->identifier, be_to_host16(hdr->length),
1467 buf);
1468 sm->eap_if->aaaEapReq = TRUE;
1469
1470 wpabuf_free(sm->eap_if->aaaEapReqData);
1471 sm->eap_if->aaaEapReqData = eap;
1472 }
1473
1474
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)1475 static void ieee802_1x_get_keys(struct hostapd_data *hapd,
1476 struct sta_info *sta, struct radius_msg *msg,
1477 struct radius_msg *req,
1478 const u8 *shared_secret,
1479 size_t shared_secret_len)
1480 {
1481 struct radius_ms_mppe_keys *keys;
1482 u8 *buf;
1483 size_t len;
1484 struct eapol_state_machine *sm = sta->eapol_sm;
1485 if (sm == NULL)
1486 return;
1487
1488 keys = radius_msg_get_ms_keys(msg, req, shared_secret,
1489 shared_secret_len);
1490
1491 if (keys && keys->send && keys->recv) {
1492 len = keys->send_len + keys->recv_len;
1493 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Send-Key",
1494 keys->send, keys->send_len);
1495 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Recv-Key",
1496 keys->recv, keys->recv_len);
1497
1498 os_free(sm->eap_if->aaaEapKeyData);
1499 sm->eap_if->aaaEapKeyData = os_malloc(len);
1500 if (sm->eap_if->aaaEapKeyData) {
1501 os_memcpy(sm->eap_if->aaaEapKeyData, keys->recv,
1502 keys->recv_len);
1503 os_memcpy(sm->eap_if->aaaEapKeyData + keys->recv_len,
1504 keys->send, keys->send_len);
1505 sm->eap_if->aaaEapKeyDataLen = len;
1506 sm->eap_if->aaaEapKeyAvailable = TRUE;
1507 }
1508 } else {
1509 wpa_printf(MSG_DEBUG,
1510 "MS-MPPE: 1x_get_keys, could not get keys: %p send: %p recv: %p",
1511 keys, keys ? keys->send : NULL,
1512 keys ? keys->recv : NULL);
1513 }
1514
1515 if (keys) {
1516 os_free(keys->send);
1517 os_free(keys->recv);
1518 os_free(keys);
1519 }
1520
1521 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_EAP_KEY_NAME, &buf, &len,
1522 NULL) == 0) {
1523 os_free(sm->eap_if->eapSessionId);
1524 sm->eap_if->eapSessionId = os_memdup(buf, len);
1525 if (sm->eap_if->eapSessionId) {
1526 sm->eap_if->eapSessionIdLen = len;
1527 wpa_hexdump(MSG_DEBUG, "EAP-Key Name",
1528 sm->eap_if->eapSessionId,
1529 sm->eap_if->eapSessionIdLen);
1530 }
1531 } else {
1532 sm->eap_if->eapSessionIdLen = 0;
1533 }
1534 }
1535
1536
ieee802_1x_store_radius_class(struct hostapd_data * hapd,struct sta_info * sta,struct radius_msg * msg)1537 static void ieee802_1x_store_radius_class(struct hostapd_data *hapd,
1538 struct sta_info *sta,
1539 struct radius_msg *msg)
1540 {
1541 u8 *attr_class;
1542 size_t class_len;
1543 struct eapol_state_machine *sm = sta->eapol_sm;
1544 int count, i;
1545 struct radius_attr_data *nclass;
1546 size_t nclass_count;
1547
1548 if (!hapd->conf->radius->acct_server || hapd->radius == NULL ||
1549 sm == NULL)
1550 return;
1551
1552 radius_free_class(&sm->radius_class);
1553 count = radius_msg_count_attr(msg, RADIUS_ATTR_CLASS, 1);
1554 if (count <= 0)
1555 return;
1556
1557 nclass = os_calloc(count, sizeof(struct radius_attr_data));
1558 if (nclass == NULL)
1559 return;
1560
1561 nclass_count = 0;
1562
1563 attr_class = NULL;
1564 for (i = 0; i < count; i++) {
1565 do {
1566 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CLASS,
1567 &attr_class, &class_len,
1568 attr_class) < 0) {
1569 i = count;
1570 break;
1571 }
1572 } while (class_len < 1);
1573
1574 nclass[nclass_count].data = os_memdup(attr_class, class_len);
1575 if (nclass[nclass_count].data == NULL)
1576 break;
1577
1578 nclass[nclass_count].len = class_len;
1579 nclass_count++;
1580 }
1581
1582 sm->radius_class.attr = nclass;
1583 sm->radius_class.count = nclass_count;
1584 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Stored %lu RADIUS Class "
1585 "attributes for " MACSTR,
1586 (unsigned long) sm->radius_class.count,
1587 MAC2STR(sta->addr));
1588 }
1589
1590
1591 /* 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)1592 static void ieee802_1x_update_sta_identity(struct hostapd_data *hapd,
1593 struct sta_info *sta,
1594 struct radius_msg *msg)
1595 {
1596 u8 *buf, *identity;
1597 size_t len;
1598 struct eapol_state_machine *sm = sta->eapol_sm;
1599
1600 if (sm == NULL)
1601 return;
1602
1603 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &buf, &len,
1604 NULL) < 0)
1605 return;
1606
1607 identity = (u8 *) dup_binstr(buf, len);
1608 if (identity == NULL)
1609 return;
1610
1611 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1612 HOSTAPD_LEVEL_DEBUG, "old identity '%s' updated with "
1613 "User-Name from Access-Accept '%s'",
1614 sm->identity ? (char *) sm->identity : "N/A",
1615 (char *) identity);
1616
1617 os_free(sm->identity);
1618 sm->identity = identity;
1619 sm->identity_len = len;
1620 }
1621
1622
1623 /* 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)1624 static void ieee802_1x_update_sta_cui(struct hostapd_data *hapd,
1625 struct sta_info *sta,
1626 struct radius_msg *msg)
1627 {
1628 struct eapol_state_machine *sm = sta->eapol_sm;
1629 struct wpabuf *cui;
1630 u8 *buf;
1631 size_t len;
1632
1633 if (sm == NULL)
1634 return;
1635
1636 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
1637 &buf, &len, NULL) < 0)
1638 return;
1639
1640 cui = wpabuf_alloc_copy(buf, len);
1641 if (cui == NULL)
1642 return;
1643
1644 wpabuf_free(sm->radius_cui);
1645 sm->radius_cui = cui;
1646 }
1647
1648
1649 #ifdef CONFIG_HS20
1650
ieee802_1x_hs20_sub_rem(struct sta_info * sta,u8 * pos,size_t len)1651 static void ieee802_1x_hs20_sub_rem(struct sta_info *sta, u8 *pos, size_t len)
1652 {
1653 sta->remediation = 1;
1654 os_free(sta->remediation_url);
1655 if (len > 2) {
1656 sta->remediation_url = os_malloc(len);
1657 if (!sta->remediation_url)
1658 return;
1659 sta->remediation_method = pos[0];
1660 os_memcpy(sta->remediation_url, pos + 1, len - 1);
1661 sta->remediation_url[len - 1] = '\0';
1662 wpa_printf(MSG_DEBUG, "HS 2.0: Subscription remediation needed "
1663 "for " MACSTR " - server method %u URL %s",
1664 MAC2STR(sta->addr), sta->remediation_method,
1665 sta->remediation_url);
1666 } else {
1667 sta->remediation_url = NULL;
1668 wpa_printf(MSG_DEBUG, "HS 2.0: Subscription remediation needed "
1669 "for " MACSTR, MAC2STR(sta->addr));
1670 }
1671 /* TODO: assign the STA into remediation VLAN or add filtering */
1672 }
1673
1674
ieee802_1x_hs20_deauth_req(struct hostapd_data * hapd,struct sta_info * sta,u8 * pos,size_t len)1675 static void ieee802_1x_hs20_deauth_req(struct hostapd_data *hapd,
1676 struct sta_info *sta, u8 *pos,
1677 size_t len)
1678 {
1679 if (len < 3)
1680 return; /* Malformed information */
1681 sta->hs20_deauth_requested = 1;
1682 wpa_printf(MSG_DEBUG, "HS 2.0: Deauthentication request - Code %u "
1683 "Re-auth Delay %u",
1684 *pos, WPA_GET_LE16(pos + 1));
1685 wpabuf_free(sta->hs20_deauth_req);
1686 sta->hs20_deauth_req = wpabuf_alloc(len + 1);
1687 if (sta->hs20_deauth_req) {
1688 wpabuf_put_data(sta->hs20_deauth_req, pos, 3);
1689 wpabuf_put_u8(sta->hs20_deauth_req, len - 3);
1690 wpabuf_put_data(sta->hs20_deauth_req, pos + 3, len - 3);
1691 }
1692 ap_sta_session_timeout(hapd, sta, hapd->conf->hs20_deauth_req_timeout);
1693 }
1694
1695
ieee802_1x_hs20_session_info(struct hostapd_data * hapd,struct sta_info * sta,u8 * pos,size_t len,int session_timeout)1696 static void ieee802_1x_hs20_session_info(struct hostapd_data *hapd,
1697 struct sta_info *sta, u8 *pos,
1698 size_t len, int session_timeout)
1699 {
1700 unsigned int swt;
1701 int warning_time, beacon_int;
1702
1703 if (len < 1)
1704 return; /* Malformed information */
1705 os_free(sta->hs20_session_info_url);
1706 sta->hs20_session_info_url = os_malloc(len);
1707 if (sta->hs20_session_info_url == NULL)
1708 return;
1709 swt = pos[0];
1710 os_memcpy(sta->hs20_session_info_url, pos + 1, len - 1);
1711 sta->hs20_session_info_url[len - 1] = '\0';
1712 wpa_printf(MSG_DEBUG, "HS 2.0: Session Information URL='%s' SWT=%u "
1713 "(session_timeout=%d)",
1714 sta->hs20_session_info_url, swt, session_timeout);
1715 if (session_timeout < 0) {
1716 wpa_printf(MSG_DEBUG, "HS 2.0: No Session-Timeout set - ignore session info URL");
1717 return;
1718 }
1719 if (swt == 255)
1720 swt = 1; /* Use one minute as the AP selected value */
1721
1722 if ((unsigned int) session_timeout < swt * 60)
1723 warning_time = 0;
1724 else
1725 warning_time = session_timeout - swt * 60;
1726
1727 beacon_int = hapd->iconf->beacon_int;
1728 if (beacon_int < 1)
1729 beacon_int = 100; /* best guess */
1730 sta->hs20_disassoc_timer = swt * 60 * 1000 / beacon_int * 125 / 128;
1731 if (sta->hs20_disassoc_timer > 65535)
1732 sta->hs20_disassoc_timer = 65535;
1733
1734 ap_sta_session_warning_timeout(hapd, sta, warning_time);
1735 }
1736
1737
ieee802_1x_hs20_t_c_filtering(struct hostapd_data * hapd,struct sta_info * sta,u8 * pos,size_t len)1738 static void ieee802_1x_hs20_t_c_filtering(struct hostapd_data *hapd,
1739 struct sta_info *sta, u8 *pos,
1740 size_t len)
1741 {
1742 if (len < 4)
1743 return; /* Malformed information */
1744 wpa_printf(MSG_DEBUG,
1745 "HS 2.0: Terms and Conditions filtering %02x %02x %02x %02x",
1746 pos[0], pos[1], pos[2], pos[3]);
1747 hs20_t_c_filtering(hapd, sta, pos[0] & BIT(0));
1748 }
1749
1750
ieee802_1x_hs20_t_c_url(struct hostapd_data * hapd,struct sta_info * sta,u8 * pos,size_t len)1751 static void ieee802_1x_hs20_t_c_url(struct hostapd_data *hapd,
1752 struct sta_info *sta, u8 *pos, size_t len)
1753 {
1754 os_free(sta->t_c_url);
1755 sta->t_c_url = os_malloc(len + 1);
1756 if (!sta->t_c_url)
1757 return;
1758 os_memcpy(sta->t_c_url, pos, len);
1759 sta->t_c_url[len] = '\0';
1760 wpa_printf(MSG_DEBUG,
1761 "HS 2.0: Terms and Conditions URL %s", sta->t_c_url);
1762 }
1763
1764 #endif /* CONFIG_HS20 */
1765
1766
ieee802_1x_check_hs20(struct hostapd_data * hapd,struct sta_info * sta,struct radius_msg * msg,int session_timeout)1767 static void ieee802_1x_check_hs20(struct hostapd_data *hapd,
1768 struct sta_info *sta,
1769 struct radius_msg *msg,
1770 int session_timeout)
1771 {
1772 #ifdef CONFIG_HS20
1773 u8 *buf, *pos, *end, type, sublen;
1774 size_t len;
1775
1776 buf = NULL;
1777 sta->remediation = 0;
1778 sta->hs20_deauth_requested = 0;
1779
1780 for (;;) {
1781 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_VENDOR_SPECIFIC,
1782 &buf, &len, buf) < 0)
1783 break;
1784 if (len < 6)
1785 continue;
1786 pos = buf;
1787 end = buf + len;
1788 if (WPA_GET_BE32(pos) != RADIUS_VENDOR_ID_WFA)
1789 continue;
1790 pos += 4;
1791
1792 type = *pos++;
1793 sublen = *pos++;
1794 if (sublen < 2)
1795 continue; /* invalid length */
1796 sublen -= 2; /* skip header */
1797 if (pos + sublen > end)
1798 continue; /* invalid WFA VSA */
1799
1800 switch (type) {
1801 case RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION:
1802 ieee802_1x_hs20_sub_rem(sta, pos, sublen);
1803 break;
1804 case RADIUS_VENDOR_ATTR_WFA_HS20_DEAUTH_REQ:
1805 ieee802_1x_hs20_deauth_req(hapd, sta, pos, sublen);
1806 break;
1807 case RADIUS_VENDOR_ATTR_WFA_HS20_SESSION_INFO_URL:
1808 ieee802_1x_hs20_session_info(hapd, sta, pos, sublen,
1809 session_timeout);
1810 break;
1811 case RADIUS_VENDOR_ATTR_WFA_HS20_T_C_FILTERING:
1812 ieee802_1x_hs20_t_c_filtering(hapd, sta, pos, sublen);
1813 break;
1814 case RADIUS_VENDOR_ATTR_WFA_HS20_T_C_URL:
1815 ieee802_1x_hs20_t_c_url(hapd, sta, pos, sublen);
1816 break;
1817 }
1818 }
1819 #endif /* CONFIG_HS20 */
1820 }
1821
1822
1823 struct sta_id_search {
1824 u8 identifier;
1825 struct eapol_state_machine *sm;
1826 };
1827
1828
ieee802_1x_select_radius_identifier(struct hostapd_data * hapd,struct sta_info * sta,void * ctx)1829 static int ieee802_1x_select_radius_identifier(struct hostapd_data *hapd,
1830 struct sta_info *sta,
1831 void *ctx)
1832 {
1833 struct sta_id_search *id_search = ctx;
1834 struct eapol_state_machine *sm = sta->eapol_sm;
1835
1836 if (sm && sm->radius_identifier >= 0 &&
1837 sm->radius_identifier == id_search->identifier) {
1838 id_search->sm = sm;
1839 return 1;
1840 }
1841 return 0;
1842 }
1843
1844
1845 static struct eapol_state_machine *
ieee802_1x_search_radius_identifier(struct hostapd_data * hapd,u8 identifier)1846 ieee802_1x_search_radius_identifier(struct hostapd_data *hapd, u8 identifier)
1847 {
1848 struct sta_id_search id_search;
1849 id_search.identifier = identifier;
1850 id_search.sm = NULL;
1851 ap_for_each_sta(hapd, ieee802_1x_select_radius_identifier, &id_search);
1852 return id_search.sm;
1853 }
1854
1855
1856 #ifndef CONFIG_NO_VLAN
ieee802_1x_update_vlan(struct radius_msg * msg,struct hostapd_data * hapd,struct sta_info * sta)1857 static int ieee802_1x_update_vlan(struct radius_msg *msg,
1858 struct hostapd_data *hapd,
1859 struct sta_info *sta)
1860 {
1861 struct vlan_description vlan_desc;
1862
1863 os_memset(&vlan_desc, 0, sizeof(vlan_desc));
1864 vlan_desc.notempty = !!radius_msg_get_vlanid(msg, &vlan_desc.untagged,
1865 MAX_NUM_TAGGED_VLAN,
1866 vlan_desc.tagged);
1867
1868 if (vlan_desc.notempty &&
1869 !hostapd_vlan_valid(hapd->conf->vlan, &vlan_desc)) {
1870 sta->eapol_sm->authFail = TRUE;
1871 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
1872 HOSTAPD_LEVEL_INFO,
1873 "Invalid VLAN %d%s received from RADIUS server",
1874 vlan_desc.untagged,
1875 vlan_desc.tagged[0] ? "+" : "");
1876 os_memset(&vlan_desc, 0, sizeof(vlan_desc));
1877 ap_sta_set_vlan(hapd, sta, &vlan_desc);
1878 return -1;
1879 }
1880
1881 if (hapd->conf->ssid.dynamic_vlan == DYNAMIC_VLAN_REQUIRED &&
1882 !vlan_desc.notempty) {
1883 sta->eapol_sm->authFail = TRUE;
1884 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1885 HOSTAPD_LEVEL_INFO,
1886 "authentication server did not include required VLAN ID in Access-Accept");
1887 return -1;
1888 }
1889
1890 return ap_sta_set_vlan(hapd, sta, &vlan_desc);
1891 }
1892 #endif /* CONFIG_NO_VLAN */
1893
1894
1895 /**
1896 * ieee802_1x_receive_auth - Process RADIUS frames from Authentication Server
1897 * @msg: RADIUS response message
1898 * @req: RADIUS request message
1899 * @shared_secret: RADIUS shared secret
1900 * @shared_secret_len: Length of shared_secret in octets
1901 * @data: Context data (struct hostapd_data *)
1902 * Returns: Processing status
1903 */
1904 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)1905 ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
1906 const u8 *shared_secret, size_t shared_secret_len,
1907 void *data)
1908 {
1909 struct hostapd_data *hapd = data;
1910 struct sta_info *sta;
1911 u32 session_timeout = 0, termination_action, acct_interim_interval;
1912 int session_timeout_set;
1913 u32 reason_code;
1914 struct eapol_state_machine *sm;
1915 int override_eapReq = 0;
1916 struct radius_hdr *hdr = radius_msg_get_hdr(msg);
1917
1918 sm = ieee802_1x_search_radius_identifier(hapd, hdr->identifier);
1919 if (sm == NULL) {
1920 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Could not find matching "
1921 "station for this RADIUS message");
1922 return RADIUS_RX_UNKNOWN;
1923 }
1924 sta = sm->sta;
1925
1926 /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
1927 * present when packet contains an EAP-Message attribute */
1928 if (hdr->code == RADIUS_CODE_ACCESS_REJECT &&
1929 radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
1930 0) < 0 &&
1931 radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
1932 wpa_printf(MSG_DEBUG, "Allowing RADIUS Access-Reject without "
1933 "Message-Authenticator since it does not include "
1934 "EAP-Message");
1935 } else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
1936 req, 1)) {
1937 wpa_printf(MSG_INFO, "Incoming RADIUS packet did not have correct Message-Authenticator - dropped");
1938 return RADIUS_RX_INVALID_AUTHENTICATOR;
1939 }
1940
1941 if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
1942 hdr->code != RADIUS_CODE_ACCESS_REJECT &&
1943 hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
1944 wpa_printf(MSG_INFO, "Unknown RADIUS message code");
1945 return RADIUS_RX_UNKNOWN;
1946 }
1947
1948 sm->radius_identifier = -1;
1949 wpa_printf(MSG_DEBUG, "RADIUS packet matching with station " MACSTR,
1950 MAC2STR(sta->addr));
1951
1952 radius_msg_free(sm->last_recv_radius);
1953 sm->last_recv_radius = msg;
1954
1955 session_timeout_set =
1956 !radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
1957 &session_timeout);
1958 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_TERMINATION_ACTION,
1959 &termination_action))
1960 termination_action = RADIUS_TERMINATION_ACTION_DEFAULT;
1961
1962 if (hapd->conf->acct_interim_interval == 0 &&
1963 hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
1964 radius_msg_get_attr_int32(msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
1965 &acct_interim_interval) == 0) {
1966 if (acct_interim_interval < 60) {
1967 hostapd_logger(hapd, sta->addr,
1968 HOSTAPD_MODULE_IEEE8021X,
1969 HOSTAPD_LEVEL_INFO,
1970 "ignored too small "
1971 "Acct-Interim-Interval %d",
1972 acct_interim_interval);
1973 } else
1974 sta->acct_interim_interval = acct_interim_interval;
1975 }
1976
1977
1978 switch (hdr->code) {
1979 case RADIUS_CODE_ACCESS_ACCEPT:
1980 #ifndef CONFIG_NO_VLAN
1981 if (hapd->conf->ssid.dynamic_vlan != DYNAMIC_VLAN_DISABLED &&
1982 ieee802_1x_update_vlan(msg, hapd, sta) < 0)
1983 break;
1984
1985 if (sta->vlan_id > 0) {
1986 hostapd_logger(hapd, sta->addr,
1987 HOSTAPD_MODULE_RADIUS,
1988 HOSTAPD_LEVEL_INFO,
1989 "VLAN ID %d", sta->vlan_id);
1990 }
1991
1992 if ((sta->flags & WLAN_STA_ASSOC) &&
1993 ap_sta_bind_vlan(hapd, sta) < 0)
1994 break;
1995 #endif /* CONFIG_NO_VLAN */
1996
1997 sta->session_timeout_set = !!session_timeout_set;
1998 os_get_reltime(&sta->session_timeout);
1999 sta->session_timeout.sec += session_timeout;
2000
2001 /* RFC 3580, Ch. 3.17 */
2002 if (session_timeout_set && termination_action ==
2003 RADIUS_TERMINATION_ACTION_RADIUS_REQUEST)
2004 sm->reAuthPeriod = session_timeout;
2005 else if (session_timeout_set)
2006 ap_sta_session_timeout(hapd, sta, session_timeout);
2007 else
2008 ap_sta_no_session_timeout(hapd, sta);
2009
2010 sm->eap_if->aaaSuccess = TRUE;
2011 override_eapReq = 1;
2012 ieee802_1x_get_keys(hapd, sta, msg, req, shared_secret,
2013 shared_secret_len);
2014 ieee802_1x_store_radius_class(hapd, sta, msg);
2015 ieee802_1x_update_sta_identity(hapd, sta, msg);
2016 ieee802_1x_update_sta_cui(hapd, sta, msg);
2017 ieee802_1x_check_hs20(hapd, sta, msg,
2018 session_timeout_set ?
2019 (int) session_timeout : -1);
2020 break;
2021 case RADIUS_CODE_ACCESS_REJECT:
2022 sm->eap_if->aaaFail = TRUE;
2023 override_eapReq = 1;
2024 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_WLAN_REASON_CODE,
2025 &reason_code) == 0) {
2026 wpa_printf(MSG_DEBUG,
2027 "RADIUS server indicated WLAN-Reason-Code %u in Access-Reject for "
2028 MACSTR, reason_code, MAC2STR(sta->addr));
2029 sta->disconnect_reason_code = reason_code;
2030 }
2031 break;
2032 case RADIUS_CODE_ACCESS_CHALLENGE:
2033 sm->eap_if->aaaEapReq = TRUE;
2034 if (session_timeout_set) {
2035 /* RFC 2869, Ch. 2.3.2; RFC 3580, Ch. 3.17 */
2036 sm->eap_if->aaaMethodTimeout = session_timeout;
2037 hostapd_logger(hapd, sm->addr,
2038 HOSTAPD_MODULE_IEEE8021X,
2039 HOSTAPD_LEVEL_DEBUG,
2040 "using EAP timeout of %d seconds (from "
2041 "RADIUS)",
2042 sm->eap_if->aaaMethodTimeout);
2043 } else {
2044 /*
2045 * Use dynamic retransmission behavior per EAP
2046 * specification.
2047 */
2048 sm->eap_if->aaaMethodTimeout = 0;
2049 }
2050 break;
2051 }
2052
2053 ieee802_1x_decapsulate_radius(hapd, sta);
2054 if (override_eapReq)
2055 sm->eap_if->aaaEapReq = FALSE;
2056
2057 #ifdef CONFIG_FILS
2058 #ifdef NEED_AP_MLME
2059 if (sta->flags & WLAN_STA_PENDING_FILS_ERP) {
2060 /* TODO: Add a PMKSA entry on success? */
2061 ieee802_11_finish_fils_auth(
2062 hapd, sta, hdr->code == RADIUS_CODE_ACCESS_ACCEPT,
2063 sm->eap_if->aaaEapReqData,
2064 sm->eap_if->aaaEapKeyData,
2065 sm->eap_if->aaaEapKeyDataLen);
2066 }
2067 #endif /* NEED_AP_MLME */
2068 #endif /* CONFIG_FILS */
2069
2070 eapol_auth_step(sm);
2071
2072 return RADIUS_RX_QUEUED;
2073 }
2074 #endif /* CONFIG_NO_RADIUS */
2075
2076
ieee802_1x_abort_auth(struct hostapd_data * hapd,struct sta_info * sta)2077 void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta)
2078 {
2079 struct eapol_state_machine *sm = sta->eapol_sm;
2080 if (sm == NULL)
2081 return;
2082
2083 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
2084 HOSTAPD_LEVEL_DEBUG, "aborting authentication");
2085
2086 #ifndef CONFIG_NO_RADIUS
2087 radius_msg_free(sm->last_recv_radius);
2088 sm->last_recv_radius = NULL;
2089 #endif /* CONFIG_NO_RADIUS */
2090
2091 if (sm->eap_if->eapTimeout) {
2092 /*
2093 * Disconnect the STA since it did not reply to the last EAP
2094 * request and we cannot continue EAP processing (EAP-Failure
2095 * could only be sent if the EAP peer actually replied).
2096 */
2097 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "EAP Timeout, STA " MACSTR,
2098 MAC2STR(sta->addr));
2099
2100 sm->eap_if->portEnabled = FALSE;
2101 ap_sta_disconnect(hapd, sta, sta->addr,
2102 WLAN_REASON_PREV_AUTH_NOT_VALID);
2103 }
2104 }
2105
2106
ieee802_1x_rekey_broadcast(struct hostapd_data * hapd)2107 static int ieee802_1x_rekey_broadcast(struct hostapd_data *hapd)
2108 {
2109 struct eapol_authenticator *eapol = hapd->eapol_auth;
2110
2111 if (hapd->conf->default_wep_key_len < 1)
2112 return 0;
2113
2114 os_free(eapol->default_wep_key);
2115 eapol->default_wep_key = os_malloc(hapd->conf->default_wep_key_len);
2116 if (eapol->default_wep_key == NULL ||
2117 random_get_bytes(eapol->default_wep_key,
2118 hapd->conf->default_wep_key_len)) {
2119 wpa_printf(MSG_INFO, "Could not generate random WEP key");
2120 os_free(eapol->default_wep_key);
2121 eapol->default_wep_key = NULL;
2122 return -1;
2123 }
2124
2125 wpa_hexdump_key(MSG_DEBUG, "IEEE 802.1X: New default WEP key",
2126 eapol->default_wep_key,
2127 hapd->conf->default_wep_key_len);
2128
2129 return 0;
2130 }
2131
2132
ieee802_1x_sta_key_available(struct hostapd_data * hapd,struct sta_info * sta,void * ctx)2133 static int ieee802_1x_sta_key_available(struct hostapd_data *hapd,
2134 struct sta_info *sta, void *ctx)
2135 {
2136 if (sta->eapol_sm) {
2137 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
2138 eapol_auth_step(sta->eapol_sm);
2139 }
2140 return 0;
2141 }
2142
2143
ieee802_1x_rekey(void * eloop_ctx,void * timeout_ctx)2144 static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx)
2145 {
2146 struct hostapd_data *hapd = eloop_ctx;
2147 struct eapol_authenticator *eapol = hapd->eapol_auth;
2148
2149 if (eapol->default_wep_key_idx >= 3)
2150 eapol->default_wep_key_idx =
2151 hapd->conf->individual_wep_key_len > 0 ? 1 : 0;
2152 else
2153 eapol->default_wep_key_idx++;
2154
2155 wpa_printf(MSG_DEBUG, "IEEE 802.1X: New default WEP key index %d",
2156 eapol->default_wep_key_idx);
2157
2158 if (ieee802_1x_rekey_broadcast(hapd)) {
2159 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
2160 HOSTAPD_LEVEL_WARNING, "failed to generate a "
2161 "new broadcast key");
2162 os_free(eapol->default_wep_key);
2163 eapol->default_wep_key = NULL;
2164 return;
2165 }
2166
2167 /* TODO: Could setup key for RX here, but change default TX keyid only
2168 * after new broadcast key has been sent to all stations. */
2169 if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
2170 broadcast_ether_addr,
2171 eapol->default_wep_key_idx, 1, NULL, 0,
2172 eapol->default_wep_key,
2173 hapd->conf->default_wep_key_len)) {
2174 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
2175 HOSTAPD_LEVEL_WARNING, "failed to configure a "
2176 "new broadcast key");
2177 os_free(eapol->default_wep_key);
2178 eapol->default_wep_key = NULL;
2179 return;
2180 }
2181
2182 ap_for_each_sta(hapd, ieee802_1x_sta_key_available, NULL);
2183
2184 if (hapd->conf->wep_rekeying_period > 0) {
2185 eloop_register_timeout(hapd->conf->wep_rekeying_period, 0,
2186 ieee802_1x_rekey, hapd, NULL);
2187 }
2188 }
2189
2190
ieee802_1x_eapol_send(void * ctx,void * sta_ctx,u8 type,const u8 * data,size_t datalen)2191 static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type,
2192 const u8 *data, size_t datalen)
2193 {
2194 #ifdef CONFIG_WPS
2195 struct sta_info *sta = sta_ctx;
2196
2197 if ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) ==
2198 WLAN_STA_MAYBE_WPS) {
2199 const u8 *identity;
2200 size_t identity_len;
2201 struct eapol_state_machine *sm = sta->eapol_sm;
2202
2203 identity = eap_get_identity(sm->eap, &identity_len);
2204 if (identity &&
2205 ((identity_len == WSC_ID_ENROLLEE_LEN &&
2206 os_memcmp(identity, WSC_ID_ENROLLEE,
2207 WSC_ID_ENROLLEE_LEN) == 0) ||
2208 (identity_len == WSC_ID_REGISTRAR_LEN &&
2209 os_memcmp(identity, WSC_ID_REGISTRAR,
2210 WSC_ID_REGISTRAR_LEN) == 0))) {
2211 wpa_printf(MSG_DEBUG, "WPS: WLAN_STA_MAYBE_WPS -> "
2212 "WLAN_STA_WPS");
2213 sta->flags |= WLAN_STA_WPS;
2214 }
2215 }
2216 #endif /* CONFIG_WPS */
2217
2218 ieee802_1x_send(ctx, sta_ctx, type, data, datalen);
2219 }
2220
2221
ieee802_1x_aaa_send(void * ctx,void * sta_ctx,const u8 * data,size_t datalen)2222 static void ieee802_1x_aaa_send(void *ctx, void *sta_ctx,
2223 const u8 *data, size_t datalen)
2224 {
2225 #ifndef CONFIG_NO_RADIUS
2226 struct hostapd_data *hapd = ctx;
2227 struct sta_info *sta = sta_ctx;
2228
2229 ieee802_1x_encapsulate_radius(hapd, sta, data, datalen);
2230 #endif /* CONFIG_NO_RADIUS */
2231 }
2232
2233
_ieee802_1x_finished(void * ctx,void * sta_ctx,int success,int preauth,int remediation)2234 static void _ieee802_1x_finished(void *ctx, void *sta_ctx, int success,
2235 int preauth, int remediation)
2236 {
2237 struct hostapd_data *hapd = ctx;
2238 struct sta_info *sta = sta_ctx;
2239 if (preauth)
2240 rsn_preauth_finished(hapd, sta, success);
2241 else
2242 ieee802_1x_finished(hapd, sta, success, remediation);
2243 }
2244
2245
ieee802_1x_get_eap_user(void * ctx,const u8 * identity,size_t identity_len,int phase2,struct eap_user * user)2246 static int ieee802_1x_get_eap_user(void *ctx, const u8 *identity,
2247 size_t identity_len, int phase2,
2248 struct eap_user *user)
2249 {
2250 struct hostapd_data *hapd = ctx;
2251 const struct hostapd_eap_user *eap_user;
2252 int i;
2253 int rv = -1;
2254
2255 eap_user = hostapd_get_eap_user(hapd, identity, identity_len, phase2);
2256 if (eap_user == NULL)
2257 goto out;
2258
2259 os_memset(user, 0, sizeof(*user));
2260 user->phase2 = phase2;
2261 for (i = 0; i < EAP_MAX_METHODS; i++) {
2262 user->methods[i].vendor = eap_user->methods[i].vendor;
2263 user->methods[i].method = eap_user->methods[i].method;
2264 }
2265
2266 if (eap_user->password) {
2267 user->password = os_memdup(eap_user->password,
2268 eap_user->password_len);
2269 if (user->password == NULL)
2270 goto out;
2271 user->password_len = eap_user->password_len;
2272 user->password_hash = eap_user->password_hash;
2273 if (eap_user->salt && eap_user->salt_len) {
2274 user->salt = os_memdup(eap_user->salt,
2275 eap_user->salt_len);
2276 if (!user->salt)
2277 goto out;
2278 user->salt_len = eap_user->salt_len;
2279 }
2280 }
2281 user->force_version = eap_user->force_version;
2282 user->macacl = eap_user->macacl;
2283 user->ttls_auth = eap_user->ttls_auth;
2284 user->remediation = eap_user->remediation;
2285 rv = 0;
2286
2287 out:
2288 if (rv)
2289 wpa_printf(MSG_DEBUG, "%s: Failed to find user", __func__);
2290
2291 return rv;
2292 }
2293
2294
ieee802_1x_sta_entry_alive(void * ctx,const u8 * addr)2295 static int ieee802_1x_sta_entry_alive(void *ctx, const u8 *addr)
2296 {
2297 struct hostapd_data *hapd = ctx;
2298 struct sta_info *sta;
2299 sta = ap_get_sta(hapd, addr);
2300 if (sta == NULL || sta->eapol_sm == NULL)
2301 return 0;
2302 return 1;
2303 }
2304
2305
ieee802_1x_logger(void * ctx,const u8 * addr,eapol_logger_level level,const char * txt)2306 static void ieee802_1x_logger(void *ctx, const u8 *addr,
2307 eapol_logger_level level, const char *txt)
2308 {
2309 #ifndef CONFIG_NO_HOSTAPD_LOGGER
2310 struct hostapd_data *hapd = ctx;
2311 int hlevel;
2312
2313 switch (level) {
2314 case EAPOL_LOGGER_WARNING:
2315 hlevel = HOSTAPD_LEVEL_WARNING;
2316 break;
2317 case EAPOL_LOGGER_INFO:
2318 hlevel = HOSTAPD_LEVEL_INFO;
2319 break;
2320 case EAPOL_LOGGER_DEBUG:
2321 default:
2322 hlevel = HOSTAPD_LEVEL_DEBUG;
2323 break;
2324 }
2325
2326 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE8021X, hlevel, "%s",
2327 txt);
2328 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
2329 }
2330
2331
ieee802_1x_set_port_authorized(void * ctx,void * sta_ctx,int authorized)2332 static void ieee802_1x_set_port_authorized(void *ctx, void *sta_ctx,
2333 int authorized)
2334 {
2335 struct hostapd_data *hapd = ctx;
2336 struct sta_info *sta = sta_ctx;
2337 ieee802_1x_set_sta_authorized(hapd, sta, authorized);
2338 }
2339
2340
_ieee802_1x_abort_auth(void * ctx,void * sta_ctx)2341 static void _ieee802_1x_abort_auth(void *ctx, void *sta_ctx)
2342 {
2343 struct hostapd_data *hapd = ctx;
2344 struct sta_info *sta = sta_ctx;
2345 ieee802_1x_abort_auth(hapd, sta);
2346 }
2347
2348
_ieee802_1x_tx_key(void * ctx,void * sta_ctx)2349 static void _ieee802_1x_tx_key(void *ctx, void *sta_ctx)
2350 {
2351 #ifndef CONFIG_FIPS
2352 #ifndef CONFIG_NO_RC4
2353 struct hostapd_data *hapd = ctx;
2354 struct sta_info *sta = sta_ctx;
2355 ieee802_1x_tx_key(hapd, sta);
2356 #endif /* CONFIG_NO_RC4 */
2357 #endif /* CONFIG_FIPS */
2358 }
2359
2360
ieee802_1x_eapol_event(void * ctx,void * sta_ctx,enum eapol_event type)2361 static void ieee802_1x_eapol_event(void *ctx, void *sta_ctx,
2362 enum eapol_event type)
2363 {
2364 /* struct hostapd_data *hapd = ctx; */
2365 struct sta_info *sta = sta_ctx;
2366 switch (type) {
2367 case EAPOL_AUTH_SM_CHANGE:
2368 wpa_auth_sm_notify(sta->wpa_sm);
2369 break;
2370 case EAPOL_AUTH_REAUTHENTICATE:
2371 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
2372 break;
2373 }
2374 }
2375
2376
2377 #ifdef CONFIG_ERP
2378
2379 static struct eap_server_erp_key *
ieee802_1x_erp_get_key(void * ctx,const char * keyname)2380 ieee802_1x_erp_get_key(void *ctx, const char *keyname)
2381 {
2382 struct hostapd_data *hapd = ctx;
2383 struct eap_server_erp_key *erp;
2384
2385 dl_list_for_each(erp, &hapd->erp_keys, struct eap_server_erp_key,
2386 list) {
2387 if (os_strcmp(erp->keyname_nai, keyname) == 0)
2388 return erp;
2389 }
2390
2391 return NULL;
2392 }
2393
2394
ieee802_1x_erp_add_key(void * ctx,struct eap_server_erp_key * erp)2395 static int ieee802_1x_erp_add_key(void *ctx, struct eap_server_erp_key *erp)
2396 {
2397 struct hostapd_data *hapd = ctx;
2398
2399 dl_list_add(&hapd->erp_keys, &erp->list);
2400 return 0;
2401 }
2402
2403 #endif /* CONFIG_ERP */
2404
2405
ieee802_1x_init(struct hostapd_data * hapd)2406 int ieee802_1x_init(struct hostapd_data *hapd)
2407 {
2408 int i;
2409 struct eapol_auth_config conf;
2410 struct eapol_auth_cb cb;
2411
2412 dl_list_init(&hapd->erp_keys);
2413
2414 os_memset(&conf, 0, sizeof(conf));
2415 conf.ctx = hapd;
2416 conf.eap_reauth_period = hapd->conf->eap_reauth_period;
2417 conf.wpa = hapd->conf->wpa;
2418 conf.individual_wep_key_len = hapd->conf->individual_wep_key_len;
2419 conf.eap_server = hapd->conf->eap_server;
2420 conf.ssl_ctx = hapd->ssl_ctx;
2421 conf.msg_ctx = hapd->msg_ctx;
2422 conf.eap_sim_db_priv = hapd->eap_sim_db_priv;
2423 conf.eap_req_id_text = hapd->conf->eap_req_id_text;
2424 conf.eap_req_id_text_len = hapd->conf->eap_req_id_text_len;
2425 conf.erp_send_reauth_start = hapd->conf->erp_send_reauth_start;
2426 conf.erp_domain = hapd->conf->erp_domain;
2427 conf.erp = hapd->conf->eap_server_erp;
2428 conf.tls_session_lifetime = hapd->conf->tls_session_lifetime;
2429 conf.tls_flags = hapd->conf->tls_flags;
2430 conf.pac_opaque_encr_key = hapd->conf->pac_opaque_encr_key;
2431 conf.eap_fast_a_id = hapd->conf->eap_fast_a_id;
2432 conf.eap_fast_a_id_len = hapd->conf->eap_fast_a_id_len;
2433 conf.eap_fast_a_id_info = hapd->conf->eap_fast_a_id_info;
2434 conf.eap_fast_prov = hapd->conf->eap_fast_prov;
2435 conf.pac_key_lifetime = hapd->conf->pac_key_lifetime;
2436 conf.pac_key_refresh_time = hapd->conf->pac_key_refresh_time;
2437 conf.eap_teap_auth = hapd->conf->eap_teap_auth;
2438 conf.eap_teap_pac_no_inner = hapd->conf->eap_teap_pac_no_inner;
2439 conf.eap_sim_aka_result_ind = hapd->conf->eap_sim_aka_result_ind;
2440 conf.eap_sim_id = hapd->conf->eap_sim_id;
2441 conf.tnc = hapd->conf->tnc;
2442 conf.wps = hapd->wps;
2443 conf.fragment_size = hapd->conf->fragment_size;
2444 conf.pwd_group = hapd->conf->pwd_group;
2445 conf.pbc_in_m1 = hapd->conf->pbc_in_m1;
2446 if (hapd->conf->server_id) {
2447 conf.server_id = (const u8 *) hapd->conf->server_id;
2448 conf.server_id_len = os_strlen(hapd->conf->server_id);
2449 } else {
2450 conf.server_id = (const u8 *) "hostapd";
2451 conf.server_id_len = 7;
2452 }
2453
2454 os_memset(&cb, 0, sizeof(cb));
2455 cb.eapol_send = ieee802_1x_eapol_send;
2456 cb.aaa_send = ieee802_1x_aaa_send;
2457 cb.finished = _ieee802_1x_finished;
2458 cb.get_eap_user = ieee802_1x_get_eap_user;
2459 cb.sta_entry_alive = ieee802_1x_sta_entry_alive;
2460 cb.logger = ieee802_1x_logger;
2461 cb.set_port_authorized = ieee802_1x_set_port_authorized;
2462 cb.abort_auth = _ieee802_1x_abort_auth;
2463 cb.tx_key = _ieee802_1x_tx_key;
2464 cb.eapol_event = ieee802_1x_eapol_event;
2465 #ifdef CONFIG_ERP
2466 cb.erp_get_key = ieee802_1x_erp_get_key;
2467 cb.erp_add_key = ieee802_1x_erp_add_key;
2468 #endif /* CONFIG_ERP */
2469
2470 hapd->eapol_auth = eapol_auth_init(&conf, &cb);
2471 if (hapd->eapol_auth == NULL)
2472 return -1;
2473
2474 if ((hapd->conf->ieee802_1x || hapd->conf->wpa) &&
2475 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1))
2476 return -1;
2477
2478 #ifndef CONFIG_NO_RADIUS
2479 if (radius_client_register(hapd->radius, RADIUS_AUTH,
2480 ieee802_1x_receive_auth, hapd))
2481 return -1;
2482 #endif /* CONFIG_NO_RADIUS */
2483
2484 if (hapd->conf->default_wep_key_len) {
2485 for (i = 0; i < 4; i++)
2486 hostapd_drv_set_key(hapd->conf->iface, hapd,
2487 WPA_ALG_NONE, NULL, i, 0, NULL, 0,
2488 NULL, 0);
2489
2490 ieee802_1x_rekey(hapd, NULL);
2491
2492 if (hapd->eapol_auth->default_wep_key == NULL)
2493 return -1;
2494 }
2495
2496 return 0;
2497 }
2498
2499
ieee802_1x_erp_flush(struct hostapd_data * hapd)2500 void ieee802_1x_erp_flush(struct hostapd_data *hapd)
2501 {
2502 struct eap_server_erp_key *erp;
2503
2504 while ((erp = dl_list_first(&hapd->erp_keys, struct eap_server_erp_key,
2505 list)) != NULL) {
2506 dl_list_del(&erp->list);
2507 bin_clear_free(erp, sizeof(*erp));
2508 }
2509 }
2510
2511
ieee802_1x_deinit(struct hostapd_data * hapd)2512 void ieee802_1x_deinit(struct hostapd_data *hapd)
2513 {
2514 eloop_cancel_timeout(ieee802_1x_rekey, hapd, NULL);
2515
2516 if (hapd->driver && hapd->drv_priv &&
2517 (hapd->conf->ieee802_1x || hapd->conf->wpa))
2518 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
2519
2520 eapol_auth_deinit(hapd->eapol_auth);
2521 hapd->eapol_auth = NULL;
2522
2523 ieee802_1x_erp_flush(hapd);
2524 }
2525
2526
ieee802_1x_tx_status(struct hostapd_data * hapd,struct sta_info * sta,const u8 * buf,size_t len,int ack)2527 int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
2528 const u8 *buf, size_t len, int ack)
2529 {
2530 struct ieee80211_hdr *hdr;
2531 u8 *pos;
2532 const unsigned char rfc1042_hdr[ETH_ALEN] =
2533 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
2534
2535 if (sta == NULL)
2536 return -1;
2537 if (len < sizeof(*hdr) + sizeof(rfc1042_hdr) + 2)
2538 return 0;
2539
2540 hdr = (struct ieee80211_hdr *) buf;
2541 pos = (u8 *) (hdr + 1);
2542 if (os_memcmp(pos, rfc1042_hdr, sizeof(rfc1042_hdr)) != 0)
2543 return 0;
2544 pos += sizeof(rfc1042_hdr);
2545 if (WPA_GET_BE16(pos) != ETH_P_PAE)
2546 return 0;
2547 pos += 2;
2548
2549 return ieee802_1x_eapol_tx_status(hapd, sta, pos, buf + len - pos,
2550 ack);
2551 }
2552
2553
ieee802_1x_eapol_tx_status(struct hostapd_data * hapd,struct sta_info * sta,const u8 * buf,int len,int ack)2554 int ieee802_1x_eapol_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
2555 const u8 *buf, int len, int ack)
2556 {
2557 const struct ieee802_1x_hdr *xhdr =
2558 (const struct ieee802_1x_hdr *) buf;
2559 const u8 *pos = buf + sizeof(*xhdr);
2560 struct ieee802_1x_eapol_key *key;
2561
2562 if (len < (int) sizeof(*xhdr))
2563 return 0;
2564 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR " TX status - version=%d "
2565 "type=%d length=%d - ack=%d",
2566 MAC2STR(sta->addr), xhdr->version, xhdr->type,
2567 be_to_host16(xhdr->length), ack);
2568
2569 #ifdef CONFIG_WPS
2570 if (xhdr->type == IEEE802_1X_TYPE_EAP_PACKET && ack &&
2571 (sta->flags & WLAN_STA_WPS) &&
2572 ap_sta_pending_delayed_1x_auth_fail_disconnect(hapd, sta)) {
2573 wpa_printf(MSG_DEBUG,
2574 "WPS: Indicate EAP completion on ACK for EAP-Failure");
2575 hostapd_wps_eap_completed(hapd);
2576 }
2577 #endif /* CONFIG_WPS */
2578
2579 if (xhdr->type != IEEE802_1X_TYPE_EAPOL_KEY)
2580 return 0;
2581
2582 if (pos + sizeof(struct wpa_eapol_key) <= buf + len) {
2583 const struct wpa_eapol_key *wpa;
2584 wpa = (const struct wpa_eapol_key *) pos;
2585 if (wpa->type == EAPOL_KEY_TYPE_RSN ||
2586 wpa->type == EAPOL_KEY_TYPE_WPA)
2587 wpa_auth_eapol_key_tx_status(hapd->wpa_auth,
2588 sta->wpa_sm, ack);
2589 }
2590
2591 /* EAPOL EAP-Packet packets are eventually re-sent by either Supplicant
2592 * or Authenticator state machines, but EAPOL-Key packets are not
2593 * retransmitted in case of failure. Try to re-send failed EAPOL-Key
2594 * packets couple of times because otherwise STA keys become
2595 * unsynchronized with AP. */
2596 if (!ack && pos + sizeof(*key) <= buf + len) {
2597 key = (struct ieee802_1x_eapol_key *) pos;
2598 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
2599 HOSTAPD_LEVEL_DEBUG, "did not Ack EAPOL-Key "
2600 "frame (%scast index=%d)",
2601 key->key_index & BIT(7) ? "uni" : "broad",
2602 key->key_index & ~BIT(7));
2603 /* TODO: re-send EAPOL-Key couple of times (with short delay
2604 * between them?). If all attempt fail, report error and
2605 * deauthenticate STA so that it will get new keys when
2606 * authenticating again (e.g., after returning in range).
2607 * Separate limit/transmit state needed both for unicast and
2608 * broadcast keys(?) */
2609 }
2610 /* TODO: could move unicast key configuration from ieee802_1x_tx_key()
2611 * to here and change the key only if the EAPOL-Key packet was Acked.
2612 */
2613
2614 return 1;
2615 }
2616
2617
ieee802_1x_get_identity(struct eapol_state_machine * sm,size_t * len)2618 u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len)
2619 {
2620 if (sm == NULL || sm->identity == NULL)
2621 return NULL;
2622
2623 *len = sm->identity_len;
2624 return sm->identity;
2625 }
2626
2627
ieee802_1x_get_radius_class(struct eapol_state_machine * sm,size_t * len,int idx)2628 u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len,
2629 int idx)
2630 {
2631 if (sm == NULL || sm->radius_class.attr == NULL ||
2632 idx >= (int) sm->radius_class.count)
2633 return NULL;
2634
2635 *len = sm->radius_class.attr[idx].len;
2636 return sm->radius_class.attr[idx].data;
2637 }
2638
2639
ieee802_1x_get_radius_cui(struct eapol_state_machine * sm)2640 struct wpabuf * ieee802_1x_get_radius_cui(struct eapol_state_machine *sm)
2641 {
2642 if (sm == NULL)
2643 return NULL;
2644 return sm->radius_cui;
2645 }
2646
2647
ieee802_1x_get_key(struct eapol_state_machine * sm,size_t * len)2648 const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len)
2649 {
2650 *len = 0;
2651 if (sm == NULL)
2652 return NULL;
2653
2654 *len = sm->eap_if->eapKeyDataLen;
2655 return sm->eap_if->eapKeyData;
2656 }
2657
2658
2659 #ifdef CONFIG_MACSEC
ieee802_1x_get_session_id(struct eapol_state_machine * sm,size_t * len)2660 const u8 * ieee802_1x_get_session_id(struct eapol_state_machine *sm,
2661 size_t *len)
2662 {
2663 *len = 0;
2664 if (!sm || !sm->eap_if)
2665 return NULL;
2666
2667 *len = sm->eap_if->eapSessionIdLen;
2668 return sm->eap_if->eapSessionId;
2669 }
2670 #endif /* CONFIG_MACSEC */
2671
2672
ieee802_1x_notify_port_enabled(struct eapol_state_machine * sm,int enabled)2673 void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm,
2674 int enabled)
2675 {
2676 if (sm == NULL)
2677 return;
2678 sm->eap_if->portEnabled = enabled ? TRUE : FALSE;
2679 eapol_auth_step(sm);
2680 }
2681
2682
ieee802_1x_notify_port_valid(struct eapol_state_machine * sm,int valid)2683 void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm,
2684 int valid)
2685 {
2686 if (sm == NULL)
2687 return;
2688 sm->portValid = valid ? TRUE : FALSE;
2689 eapol_auth_step(sm);
2690 }
2691
2692
ieee802_1x_notify_pre_auth(struct eapol_state_machine * sm,int pre_auth)2693 void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, int pre_auth)
2694 {
2695 if (sm == NULL)
2696 return;
2697 if (pre_auth)
2698 sm->flags |= EAPOL_SM_PREAUTH;
2699 else
2700 sm->flags &= ~EAPOL_SM_PREAUTH;
2701 }
2702
2703
bool_txt(Boolean val)2704 static const char * bool_txt(Boolean val)
2705 {
2706 return val ? "TRUE" : "FALSE";
2707 }
2708
2709
ieee802_1x_get_mib(struct hostapd_data * hapd,char * buf,size_t buflen)2710 int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
2711 {
2712 /* TODO */
2713 return 0;
2714 }
2715
2716
ieee802_1x_get_mib_sta(struct hostapd_data * hapd,struct sta_info * sta,char * buf,size_t buflen)2717 int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
2718 char *buf, size_t buflen)
2719 {
2720 int len = 0, ret;
2721 struct eapol_state_machine *sm = sta->eapol_sm;
2722 struct os_reltime diff;
2723 const char *name1;
2724 const char *name2;
2725 char *identity_buf = NULL;
2726
2727 if (sm == NULL)
2728 return 0;
2729
2730 ret = os_snprintf(buf + len, buflen - len,
2731 "dot1xPaePortNumber=%d\n"
2732 "dot1xPaePortProtocolVersion=%d\n"
2733 "dot1xPaePortCapabilities=1\n"
2734 "dot1xPaePortInitialize=%d\n"
2735 "dot1xPaePortReauthenticate=FALSE\n",
2736 sta->aid,
2737 EAPOL_VERSION,
2738 sm->initialize);
2739 if (os_snprintf_error(buflen - len, ret))
2740 return len;
2741 len += ret;
2742
2743 /* dot1xAuthConfigTable */
2744 ret = os_snprintf(buf + len, buflen - len,
2745 "dot1xAuthPaeState=%d\n"
2746 "dot1xAuthBackendAuthState=%d\n"
2747 "dot1xAuthAdminControlledDirections=%d\n"
2748 "dot1xAuthOperControlledDirections=%d\n"
2749 "dot1xAuthAuthControlledPortStatus=%d\n"
2750 "dot1xAuthAuthControlledPortControl=%d\n"
2751 "dot1xAuthQuietPeriod=%u\n"
2752 "dot1xAuthServerTimeout=%u\n"
2753 "dot1xAuthReAuthPeriod=%u\n"
2754 "dot1xAuthReAuthEnabled=%s\n"
2755 "dot1xAuthKeyTxEnabled=%s\n",
2756 sm->auth_pae_state + 1,
2757 sm->be_auth_state + 1,
2758 sm->adminControlledDirections,
2759 sm->operControlledDirections,
2760 sm->authPortStatus,
2761 sm->portControl,
2762 sm->quietPeriod,
2763 sm->serverTimeout,
2764 sm->reAuthPeriod,
2765 bool_txt(sm->reAuthEnabled),
2766 bool_txt(sm->keyTxEnabled));
2767 if (os_snprintf_error(buflen - len, ret))
2768 return len;
2769 len += ret;
2770
2771 /* dot1xAuthStatsTable */
2772 ret = os_snprintf(buf + len, buflen - len,
2773 "dot1xAuthEapolFramesRx=%u\n"
2774 "dot1xAuthEapolFramesTx=%u\n"
2775 "dot1xAuthEapolStartFramesRx=%u\n"
2776 "dot1xAuthEapolLogoffFramesRx=%u\n"
2777 "dot1xAuthEapolRespIdFramesRx=%u\n"
2778 "dot1xAuthEapolRespFramesRx=%u\n"
2779 "dot1xAuthEapolReqIdFramesTx=%u\n"
2780 "dot1xAuthEapolReqFramesTx=%u\n"
2781 "dot1xAuthInvalidEapolFramesRx=%u\n"
2782 "dot1xAuthEapLengthErrorFramesRx=%u\n"
2783 "dot1xAuthLastEapolFrameVersion=%u\n"
2784 "dot1xAuthLastEapolFrameSource=" MACSTR "\n",
2785 sm->dot1xAuthEapolFramesRx,
2786 sm->dot1xAuthEapolFramesTx,
2787 sm->dot1xAuthEapolStartFramesRx,
2788 sm->dot1xAuthEapolLogoffFramesRx,
2789 sm->dot1xAuthEapolRespIdFramesRx,
2790 sm->dot1xAuthEapolRespFramesRx,
2791 sm->dot1xAuthEapolReqIdFramesTx,
2792 sm->dot1xAuthEapolReqFramesTx,
2793 sm->dot1xAuthInvalidEapolFramesRx,
2794 sm->dot1xAuthEapLengthErrorFramesRx,
2795 sm->dot1xAuthLastEapolFrameVersion,
2796 MAC2STR(sm->addr));
2797 if (os_snprintf_error(buflen - len, ret))
2798 return len;
2799 len += ret;
2800
2801 /* dot1xAuthDiagTable */
2802 ret = os_snprintf(buf + len, buflen - len,
2803 "dot1xAuthEntersConnecting=%u\n"
2804 "dot1xAuthEapLogoffsWhileConnecting=%u\n"
2805 "dot1xAuthEntersAuthenticating=%u\n"
2806 "dot1xAuthAuthSuccessesWhileAuthenticating=%u\n"
2807 "dot1xAuthAuthTimeoutsWhileAuthenticating=%u\n"
2808 "dot1xAuthAuthFailWhileAuthenticating=%u\n"
2809 "dot1xAuthAuthEapStartsWhileAuthenticating=%u\n"
2810 "dot1xAuthAuthEapLogoffWhileAuthenticating=%u\n"
2811 "dot1xAuthAuthReauthsWhileAuthenticated=%u\n"
2812 "dot1xAuthAuthEapStartsWhileAuthenticated=%u\n"
2813 "dot1xAuthAuthEapLogoffWhileAuthenticated=%u\n"
2814 "dot1xAuthBackendResponses=%u\n"
2815 "dot1xAuthBackendAccessChallenges=%u\n"
2816 "dot1xAuthBackendOtherRequestsToSupplicant=%u\n"
2817 "dot1xAuthBackendAuthSuccesses=%u\n"
2818 "dot1xAuthBackendAuthFails=%u\n",
2819 sm->authEntersConnecting,
2820 sm->authEapLogoffsWhileConnecting,
2821 sm->authEntersAuthenticating,
2822 sm->authAuthSuccessesWhileAuthenticating,
2823 sm->authAuthTimeoutsWhileAuthenticating,
2824 sm->authAuthFailWhileAuthenticating,
2825 sm->authAuthEapStartsWhileAuthenticating,
2826 sm->authAuthEapLogoffWhileAuthenticating,
2827 sm->authAuthReauthsWhileAuthenticated,
2828 sm->authAuthEapStartsWhileAuthenticated,
2829 sm->authAuthEapLogoffWhileAuthenticated,
2830 sm->backendResponses,
2831 sm->backendAccessChallenges,
2832 sm->backendOtherRequestsToSupplicant,
2833 sm->backendAuthSuccesses,
2834 sm->backendAuthFails);
2835 if (os_snprintf_error(buflen - len, ret))
2836 return len;
2837 len += ret;
2838
2839 /* dot1xAuthSessionStatsTable */
2840 os_reltime_age(&sta->acct_session_start, &diff);
2841 if (sm->eap && !sm->identity) {
2842 const u8 *id;
2843 size_t id_len;
2844
2845 id = eap_get_identity(sm->eap, &id_len);
2846 if (id)
2847 identity_buf = dup_binstr(id, id_len);
2848 }
2849 ret = os_snprintf(buf + len, buflen - len,
2850 /* TODO: dot1xAuthSessionOctetsRx */
2851 /* TODO: dot1xAuthSessionOctetsTx */
2852 /* TODO: dot1xAuthSessionFramesRx */
2853 /* TODO: dot1xAuthSessionFramesTx */
2854 "dot1xAuthSessionId=%016llX\n"
2855 "dot1xAuthSessionAuthenticMethod=%d\n"
2856 "dot1xAuthSessionTime=%u\n"
2857 "dot1xAuthSessionTerminateCause=999\n"
2858 "dot1xAuthSessionUserName=%s\n",
2859 (unsigned long long) sta->acct_session_id,
2860 (wpa_key_mgmt_wpa_ieee8021x(
2861 wpa_auth_sta_key_mgmt(sta->wpa_sm))) ?
2862 1 : 2,
2863 (unsigned int) diff.sec,
2864 sm->identity ? (char *) sm->identity :
2865 (identity_buf ? identity_buf : "N/A"));
2866 os_free(identity_buf);
2867 if (os_snprintf_error(buflen - len, ret))
2868 return len;
2869 len += ret;
2870
2871 if (sm->acct_multi_session_id) {
2872 ret = os_snprintf(buf + len, buflen - len,
2873 "authMultiSessionId=%016llX\n",
2874 (unsigned long long)
2875 sm->acct_multi_session_id);
2876 if (os_snprintf_error(buflen - len, ret))
2877 return len;
2878 len += ret;
2879 }
2880
2881 name1 = eap_server_get_name(0, sm->eap_type_authsrv);
2882 name2 = eap_server_get_name(0, sm->eap_type_supp);
2883 ret = os_snprintf(buf + len, buflen - len,
2884 "last_eap_type_as=%d (%s)\n"
2885 "last_eap_type_sta=%d (%s)\n",
2886 sm->eap_type_authsrv, name1,
2887 sm->eap_type_supp, name2);
2888 if (os_snprintf_error(buflen - len, ret))
2889 return len;
2890 len += ret;
2891
2892 return len;
2893 }
2894
2895
2896 #ifdef CONFIG_HS20
ieee802_1x_wnm_notif_send(void * eloop_ctx,void * timeout_ctx)2897 static void ieee802_1x_wnm_notif_send(void *eloop_ctx, void *timeout_ctx)
2898 {
2899 struct hostapd_data *hapd = eloop_ctx;
2900 struct sta_info *sta = timeout_ctx;
2901
2902 if (sta->remediation) {
2903 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2904 MACSTR " to indicate Subscription Remediation",
2905 MAC2STR(sta->addr));
2906 hs20_send_wnm_notification(hapd, sta->addr,
2907 sta->remediation_method,
2908 sta->remediation_url);
2909 os_free(sta->remediation_url);
2910 sta->remediation_url = NULL;
2911 }
2912
2913 if (sta->hs20_deauth_req) {
2914 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2915 MACSTR " to indicate imminent deauthentication",
2916 MAC2STR(sta->addr));
2917 hs20_send_wnm_notification_deauth_req(hapd, sta->addr,
2918 sta->hs20_deauth_req);
2919 }
2920
2921 if (sta->hs20_t_c_filtering) {
2922 wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to "
2923 MACSTR " to indicate Terms and Conditions filtering",
2924 MAC2STR(sta->addr));
2925 hs20_send_wnm_notification_t_c(hapd, sta->addr, sta->t_c_url);
2926 os_free(sta->t_c_url);
2927 sta->t_c_url = NULL;
2928 }
2929 }
2930 #endif /* CONFIG_HS20 */
2931
2932
ieee802_1x_finished(struct hostapd_data * hapd,struct sta_info * sta,int success,int remediation)2933 static void ieee802_1x_finished(struct hostapd_data *hapd,
2934 struct sta_info *sta, int success,
2935 int remediation)
2936 {
2937 const u8 *key;
2938 size_t len;
2939 /* TODO: get PMKLifetime from WPA parameters */
2940 static const int dot11RSNAConfigPMKLifetime = 43200;
2941 unsigned int session_timeout;
2942 struct os_reltime now, remaining;
2943
2944 #ifdef CONFIG_HS20
2945 if (remediation && !sta->remediation) {
2946 sta->remediation = 1;
2947 os_free(sta->remediation_url);
2948 sta->remediation_url =
2949 os_strdup(hapd->conf->subscr_remediation_url);
2950 sta->remediation_method = 1; /* SOAP-XML SPP */
2951 }
2952
2953 if (success && (sta->remediation || sta->hs20_deauth_req ||
2954 sta->hs20_t_c_filtering)) {
2955 wpa_printf(MSG_DEBUG, "HS 2.0: Schedule WNM-Notification to "
2956 MACSTR " in 100 ms", MAC2STR(sta->addr));
2957 eloop_cancel_timeout(ieee802_1x_wnm_notif_send, hapd, sta);
2958 eloop_register_timeout(0, 100000, ieee802_1x_wnm_notif_send,
2959 hapd, sta);
2960 }
2961 #endif /* CONFIG_HS20 */
2962
2963 #ifdef CONFIG_MACSEC
2964 ieee802_1x_notify_create_actor_hapd(hapd, sta);
2965 #endif /* CONFIG_MACSEC */
2966
2967 key = ieee802_1x_get_key(sta->eapol_sm, &len);
2968 if (sta->session_timeout_set) {
2969 os_get_reltime(&now);
2970 os_reltime_sub(&sta->session_timeout, &now, &remaining);
2971 session_timeout = (remaining.sec > 0) ? remaining.sec : 1;
2972 } else {
2973 session_timeout = dot11RSNAConfigPMKLifetime;
2974 }
2975 if (success && key && len >= PMK_LEN && !sta->remediation &&
2976 !sta->hs20_deauth_requested &&
2977 wpa_auth_pmksa_add(sta->wpa_sm, key, len, session_timeout,
2978 sta->eapol_sm) == 0) {
2979 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
2980 HOSTAPD_LEVEL_DEBUG,
2981 "Added PMKSA cache entry (IEEE 802.1X)");
2982 }
2983
2984 if (!success) {
2985 /*
2986 * Many devices require deauthentication after WPS provisioning
2987 * and some may not be be able to do that themselves, so
2988 * disconnect the client here. In addition, this may also
2989 * benefit IEEE 802.1X/EAPOL authentication cases, too since
2990 * the EAPOL PAE state machine would remain in HELD state for
2991 * considerable amount of time and some EAP methods, like
2992 * EAP-FAST with anonymous provisioning, may require another
2993 * EAPOL authentication to be started to complete connection.
2994 */
2995 ap_sta_delayed_1x_auth_fail_disconnect(hapd, sta);
2996 }
2997 }
2998