Line data Source code
1 : /*
2 : * hostapd / IEEE 802.1X-2004 Authenticator
3 : * Copyright (c) 2002-2012, Jouni Malinen <j@w1.fi>
4 : *
5 : * This software may be distributed under the terms of the BSD license.
6 : * See README for more details.
7 : */
8 :
9 : #include "utils/includes.h"
10 :
11 : #include "utils/common.h"
12 : #include "utils/eloop.h"
13 : #include "crypto/md5.h"
14 : #include "crypto/crypto.h"
15 : #include "crypto/random.h"
16 : #include "common/ieee802_11_defs.h"
17 : #include "radius/radius.h"
18 : #include "radius/radius_client.h"
19 : #include "eap_server/eap.h"
20 : #include "eap_common/eap_wsc_common.h"
21 : #include "eapol_auth/eapol_auth_sm.h"
22 : #include "eapol_auth/eapol_auth_sm_i.h"
23 : #include "p2p/p2p.h"
24 : #include "hostapd.h"
25 : #include "accounting.h"
26 : #include "sta_info.h"
27 : #include "wpa_auth.h"
28 : #include "preauth_auth.h"
29 : #include "pmksa_cache_auth.h"
30 : #include "ap_config.h"
31 : #include "ap_drv_ops.h"
32 : #include "wps_hostapd.h"
33 : #include "hs20.h"
34 : #include "ieee802_1x.h"
35 :
36 :
37 : static void ieee802_1x_finished(struct hostapd_data *hapd,
38 : struct sta_info *sta, int success,
39 : int remediation);
40 :
41 :
42 3489 : static void ieee802_1x_send(struct hostapd_data *hapd, struct sta_info *sta,
43 : u8 type, const u8 *data, size_t datalen)
44 : {
45 : u8 *buf;
46 : struct ieee802_1x_hdr *xhdr;
47 : size_t len;
48 3489 : int encrypt = 0;
49 :
50 3489 : len = sizeof(*xhdr) + datalen;
51 3489 : buf = os_zalloc(len);
52 3489 : if (buf == NULL) {
53 0 : wpa_printf(MSG_ERROR, "malloc() failed for "
54 : "ieee802_1x_send(len=%lu)",
55 : (unsigned long) len);
56 3489 : return;
57 : }
58 :
59 3489 : xhdr = (struct ieee802_1x_hdr *) buf;
60 3489 : xhdr->version = hapd->conf->eapol_version;
61 3489 : xhdr->type = type;
62 3489 : xhdr->length = host_to_be16(datalen);
63 :
64 3489 : if (datalen > 0 && data != NULL)
65 3489 : os_memcpy(xhdr + 1, data, datalen);
66 :
67 3489 : if (wpa_auth_pairwise_set(sta->wpa_sm))
68 301 : encrypt = 1;
69 3489 : if (sta->flags & WLAN_STA_PREAUTH) {
70 4 : rsn_preauth_send(hapd, sta, buf, len);
71 : } else {
72 6970 : hostapd_drv_hapd_send_eapol(
73 3485 : hapd, sta->addr, buf, len,
74 : encrypt, hostapd_sta_flags_to_drv(sta->flags));
75 : }
76 :
77 3489 : os_free(buf);
78 : }
79 :
80 :
81 1918 : void ieee802_1x_set_sta_authorized(struct hostapd_data *hapd,
82 : struct sta_info *sta, int authorized)
83 : {
84 : int res;
85 :
86 1918 : if (sta->flags & WLAN_STA_PREAUTH)
87 1920 : return;
88 :
89 1916 : if (authorized) {
90 621 : ap_sta_set_authorized(hapd, sta, 1);
91 621 : res = hostapd_set_authorized(hapd, sta, 1);
92 621 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
93 : HOSTAPD_LEVEL_DEBUG, "authorizing port");
94 : } else {
95 1295 : ap_sta_set_authorized(hapd, sta, 0);
96 1295 : res = hostapd_set_authorized(hapd, sta, 0);
97 1295 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
98 : HOSTAPD_LEVEL_DEBUG, "unauthorizing port");
99 : }
100 :
101 1916 : if (res && errno != ENOENT) {
102 0 : wpa_printf(MSG_DEBUG, "Could not set station " MACSTR
103 : " flags for kernel driver (errno=%d).",
104 0 : MAC2STR(sta->addr), errno);
105 : }
106 :
107 1916 : if (authorized) {
108 621 : os_get_reltime(&sta->connected_time);
109 621 : accounting_sta_start(hapd, sta);
110 : }
111 : }
112 :
113 :
114 4 : static void ieee802_1x_tx_key_one(struct hostapd_data *hapd,
115 : struct sta_info *sta,
116 : int idx, int broadcast,
117 : u8 *key_data, size_t key_len)
118 : {
119 : u8 *buf, *ekey;
120 : struct ieee802_1x_hdr *hdr;
121 : struct ieee802_1x_eapol_key *key;
122 : size_t len, ekey_len;
123 4 : struct eapol_state_machine *sm = sta->eapol_sm;
124 :
125 4 : if (sm == NULL)
126 0 : return;
127 :
128 4 : len = sizeof(*key) + key_len;
129 4 : buf = os_zalloc(sizeof(*hdr) + len);
130 4 : if (buf == NULL)
131 0 : return;
132 :
133 4 : hdr = (struct ieee802_1x_hdr *) buf;
134 4 : key = (struct ieee802_1x_eapol_key *) (hdr + 1);
135 4 : key->type = EAPOL_KEY_TYPE_RC4;
136 4 : WPA_PUT_BE16(key->key_length, key_len);
137 4 : wpa_get_ntp_timestamp(key->replay_counter);
138 :
139 4 : if (random_get_bytes(key->key_iv, sizeof(key->key_iv))) {
140 0 : wpa_printf(MSG_ERROR, "Could not get random numbers");
141 0 : os_free(buf);
142 0 : return;
143 : }
144 :
145 4 : key->key_index = idx | (broadcast ? 0 : BIT(7));
146 4 : if (hapd->conf->eapol_key_index_workaround) {
147 : /* According to some information, WinXP Supplicant seems to
148 : * interpret bit7 as an indication whether the key is to be
149 : * activated, so make it possible to enable workaround that
150 : * sets this bit for all keys. */
151 0 : key->key_index |= BIT(7);
152 : }
153 :
154 : /* Key is encrypted using "Key-IV + MSK[0..31]" as the RC4-key and
155 : * MSK[32..63] is used to sign the message. */
156 4 : if (sm->eap_if->eapKeyData == NULL || sm->eap_if->eapKeyDataLen < 64) {
157 0 : wpa_printf(MSG_ERROR, "No eapKeyData available for encrypting "
158 : "and signing EAPOL-Key");
159 0 : os_free(buf);
160 0 : return;
161 : }
162 4 : os_memcpy((u8 *) (key + 1), key_data, key_len);
163 4 : ekey_len = sizeof(key->key_iv) + 32;
164 4 : ekey = os_malloc(ekey_len);
165 4 : if (ekey == NULL) {
166 0 : wpa_printf(MSG_ERROR, "Could not encrypt key");
167 0 : os_free(buf);
168 0 : return;
169 : }
170 4 : os_memcpy(ekey, key->key_iv, sizeof(key->key_iv));
171 4 : os_memcpy(ekey + sizeof(key->key_iv), sm->eap_if->eapKeyData, 32);
172 4 : rc4_skip(ekey, ekey_len, 0, (u8 *) (key + 1), key_len);
173 4 : os_free(ekey);
174 :
175 : /* This header is needed here for HMAC-MD5, but it will be regenerated
176 : * in ieee802_1x_send() */
177 4 : hdr->version = hapd->conf->eapol_version;
178 4 : hdr->type = IEEE802_1X_TYPE_EAPOL_KEY;
179 4 : hdr->length = host_to_be16(len);
180 4 : hmac_md5(sm->eap_if->eapKeyData + 32, 32, buf, sizeof(*hdr) + len,
181 4 : key->key_signature);
182 :
183 28 : wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key to " MACSTR
184 24 : " (%s index=%d)", MAC2STR(sm->addr),
185 : broadcast ? "broadcast" : "unicast", idx);
186 4 : ieee802_1x_send(hapd, sta, IEEE802_1X_TYPE_EAPOL_KEY, (u8 *) key, len);
187 4 : if (sta->eapol_sm)
188 4 : sta->eapol_sm->dot1xAuthEapolFramesTx++;
189 4 : os_free(buf);
190 : }
191 :
192 :
193 2 : void ieee802_1x_tx_key(struct hostapd_data *hapd, struct sta_info *sta)
194 : {
195 2 : struct eapol_authenticator *eapol = hapd->eapol_auth;
196 2 : struct eapol_state_machine *sm = sta->eapol_sm;
197 :
198 2 : if (sm == NULL || !sm->eap_if->eapKeyData)
199 0 : return;
200 :
201 12 : wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key(s) to " MACSTR,
202 12 : MAC2STR(sta->addr));
203 :
204 : #ifndef CONFIG_NO_VLAN
205 2 : if (sta->vlan_id > 0 && sta->vlan_id <= MAX_VLAN_ID) {
206 0 : wpa_printf(MSG_ERROR, "Using WEP with vlans is not supported.");
207 0 : return;
208 : }
209 : #endif /* CONFIG_NO_VLAN */
210 :
211 2 : if (eapol->default_wep_key) {
212 2 : ieee802_1x_tx_key_one(hapd, sta, eapol->default_wep_key_idx, 1,
213 : eapol->default_wep_key,
214 2 : hapd->conf->default_wep_key_len);
215 : }
216 :
217 2 : if (hapd->conf->individual_wep_key_len > 0) {
218 : u8 *ikey;
219 2 : ikey = os_malloc(hapd->conf->individual_wep_key_len);
220 4 : if (ikey == NULL ||
221 2 : random_get_bytes(ikey, hapd->conf->individual_wep_key_len))
222 : {
223 0 : wpa_printf(MSG_ERROR, "Could not generate random "
224 : "individual WEP key.");
225 0 : os_free(ikey);
226 0 : return;
227 : }
228 :
229 2 : wpa_hexdump_key(MSG_DEBUG, "Individual WEP key",
230 2 : ikey, hapd->conf->individual_wep_key_len);
231 :
232 2 : ieee802_1x_tx_key_one(hapd, sta, 0, 0, ikey,
233 2 : hapd->conf->individual_wep_key_len);
234 :
235 : /* TODO: set encryption in TX callback, i.e., only after STA
236 : * has ACKed EAPOL-Key frame */
237 4 : if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
238 2 : sta->addr, 0, 1, NULL, 0, ikey,
239 2 : hapd->conf->individual_wep_key_len)) {
240 0 : wpa_printf(MSG_ERROR, "Could not set individual WEP "
241 : "encryption.");
242 : }
243 :
244 2 : os_free(ikey);
245 : }
246 : }
247 :
248 :
249 1620 : const char *radius_mode_txt(struct hostapd_data *hapd)
250 : {
251 1620 : switch (hapd->iface->conf->hw_mode) {
252 : case HOSTAPD_MODE_IEEE80211AD:
253 0 : return "802.11ad";
254 : case HOSTAPD_MODE_IEEE80211A:
255 0 : return "802.11a";
256 : case HOSTAPD_MODE_IEEE80211G:
257 1620 : return "802.11g";
258 : case HOSTAPD_MODE_IEEE80211B:
259 : default:
260 0 : return "802.11b";
261 : }
262 : }
263 :
264 :
265 3240 : int radius_sta_rate(struct hostapd_data *hapd, struct sta_info *sta)
266 : {
267 : int i;
268 3240 : u8 rate = 0;
269 :
270 42120 : for (i = 0; i < sta->supported_rates_len; i++)
271 38880 : if ((sta->supported_rates[i] & 0x7f) > rate)
272 32400 : rate = sta->supported_rates[i] & 0x7f;
273 :
274 3240 : return rate;
275 : }
276 :
277 :
278 : #ifndef CONFIG_NO_RADIUS
279 1604 : static void ieee802_1x_learn_identity(struct hostapd_data *hapd,
280 : struct eapol_state_machine *sm,
281 : const u8 *eap, size_t len)
282 : {
283 : const u8 *identity;
284 : size_t identity_len;
285 :
286 3208 : if (len <= sizeof(struct eap_hdr) ||
287 1604 : eap[sizeof(struct eap_hdr)] != EAP_TYPE_IDENTITY)
288 2596 : return;
289 :
290 306 : identity = eap_get_identity(sm->eap, &identity_len);
291 306 : if (identity == NULL)
292 0 : return;
293 :
294 : /* Save station identity for future RADIUS packets */
295 306 : os_free(sm->identity);
296 306 : sm->identity = (u8 *) dup_binstr(identity, identity_len);
297 306 : if (sm->identity == NULL) {
298 0 : sm->identity_len = 0;
299 0 : return;
300 : }
301 :
302 306 : sm->identity_len = identity_len;
303 306 : hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
304 : HOSTAPD_LEVEL_DEBUG, "STA identity '%s'", sm->identity);
305 306 : sm->dot1xAuthEapolRespIdFramesRx++;
306 : }
307 :
308 :
309 1623 : static int add_common_radius_sta_attr(struct hostapd_data *hapd,
310 : struct hostapd_radius_attr *req_attr,
311 : struct sta_info *sta,
312 : struct radius_msg *msg)
313 : {
314 : char buf[128];
315 :
316 1623 : if (!hostapd_config_get_radius_attr(req_attr,
317 1623 : RADIUS_ATTR_NAS_PORT) &&
318 1623 : !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT, sta->aid)) {
319 0 : wpa_printf(MSG_ERROR, "Could not add NAS-Port");
320 0 : return -1;
321 : }
322 :
323 9738 : os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
324 9738 : MAC2STR(sta->addr));
325 1623 : buf[sizeof(buf) - 1] = '\0';
326 1623 : if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
327 : (u8 *) buf, os_strlen(buf))) {
328 0 : wpa_printf(MSG_ERROR, "Could not add Calling-Station-Id");
329 0 : return -1;
330 : }
331 :
332 1623 : if (sta->flags & WLAN_STA_PREAUTH) {
333 3 : os_strlcpy(buf, "IEEE 802.11i Pre-Authentication",
334 : sizeof(buf));
335 : } else {
336 4860 : os_snprintf(buf, sizeof(buf), "CONNECT %d%sMbps %s",
337 1620 : radius_sta_rate(hapd, sta) / 2,
338 1620 : (radius_sta_rate(hapd, sta) & 1) ? ".5" : "",
339 : radius_mode_txt(hapd));
340 1620 : buf[sizeof(buf) - 1] = '\0';
341 : }
342 1623 : if (!hostapd_config_get_radius_attr(req_attr,
343 1608 : RADIUS_ATTR_CONNECT_INFO) &&
344 1608 : !radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
345 : (u8 *) buf, os_strlen(buf))) {
346 0 : wpa_printf(MSG_ERROR, "Could not add Connect-Info");
347 0 : return -1;
348 : }
349 :
350 1623 : if (sta->acct_session_id_hi || sta->acct_session_id_lo) {
351 1623 : os_snprintf(buf, sizeof(buf), "%08X-%08X",
352 : sta->acct_session_id_hi, sta->acct_session_id_lo);
353 1623 : if (!radius_msg_add_attr(msg, RADIUS_ATTR_ACCT_SESSION_ID,
354 : (u8 *) buf, os_strlen(buf))) {
355 0 : wpa_printf(MSG_ERROR, "Could not add Acct-Session-Id");
356 0 : return -1;
357 : }
358 : }
359 :
360 1623 : return 0;
361 : }
362 :
363 :
364 1635 : int add_common_radius_attr(struct hostapd_data *hapd,
365 : struct hostapd_radius_attr *req_attr,
366 : struct sta_info *sta,
367 : struct radius_msg *msg)
368 : {
369 : char buf[128];
370 : struct hostapd_radius_attr *attr;
371 :
372 1635 : if (!hostapd_config_get_radius_attr(req_attr,
373 1635 : RADIUS_ATTR_NAS_IP_ADDRESS) &&
374 1656 : hapd->conf->own_ip_addr.af == AF_INET &&
375 21 : !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
376 21 : (u8 *) &hapd->conf->own_ip_addr.u.v4, 4)) {
377 0 : wpa_printf(MSG_ERROR, "Could not add NAS-IP-Address");
378 0 : return -1;
379 : }
380 :
381 : #ifdef CONFIG_IPV6
382 1635 : if (!hostapd_config_get_radius_attr(req_attr,
383 1635 : RADIUS_ATTR_NAS_IPV6_ADDRESS) &&
384 1642 : hapd->conf->own_ip_addr.af == AF_INET6 &&
385 7 : !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IPV6_ADDRESS,
386 7 : (u8 *) &hapd->conf->own_ip_addr.u.v6, 16)) {
387 0 : wpa_printf(MSG_ERROR, "Could not add NAS-IPv6-Address");
388 0 : return -1;
389 : }
390 : #endif /* CONFIG_IPV6 */
391 :
392 1635 : if (!hostapd_config_get_radius_attr(req_attr,
393 1635 : RADIUS_ATTR_NAS_IDENTIFIER) &&
394 2772 : hapd->conf->nas_identifier &&
395 2274 : !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IDENTIFIER,
396 1137 : (u8 *) hapd->conf->nas_identifier,
397 1137 : os_strlen(hapd->conf->nas_identifier))) {
398 0 : wpa_printf(MSG_ERROR, "Could not add NAS-Identifier");
399 0 : return -1;
400 : }
401 :
402 13080 : os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT ":%s",
403 9810 : MAC2STR(hapd->own_addr),
404 1635 : wpa_ssid_txt(hapd->conf->ssid.ssid,
405 1635 : hapd->conf->ssid.ssid_len));
406 1635 : buf[sizeof(buf) - 1] = '\0';
407 1635 : if (!hostapd_config_get_radius_attr(req_attr,
408 1635 : RADIUS_ATTR_CALLED_STATION_ID) &&
409 1635 : !radius_msg_add_attr(msg, RADIUS_ATTR_CALLED_STATION_ID,
410 : (u8 *) buf, os_strlen(buf))) {
411 0 : wpa_printf(MSG_ERROR, "Could not add Called-Station-Id");
412 0 : return -1;
413 : }
414 :
415 1635 : if (!hostapd_config_get_radius_attr(req_attr,
416 1635 : RADIUS_ATTR_NAS_PORT_TYPE) &&
417 1635 : !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
418 : RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
419 0 : wpa_printf(MSG_ERROR, "Could not add NAS-Port-Type");
420 0 : return -1;
421 : }
422 :
423 1635 : if (sta && add_common_radius_sta_attr(hapd, req_attr, sta, msg) < 0)
424 0 : return -1;
425 :
426 1669 : for (attr = req_attr; attr; attr = attr->next) {
427 68 : if (!radius_msg_add_attr(msg, attr->type,
428 34 : wpabuf_head(attr->val),
429 34 : wpabuf_len(attr->val))) {
430 0 : wpa_printf(MSG_ERROR, "Could not add RADIUS "
431 : "attribute");
432 0 : return -1;
433 : }
434 : }
435 :
436 1635 : return 0;
437 : }
438 :
439 :
440 1604 : static void ieee802_1x_encapsulate_radius(struct hostapd_data *hapd,
441 : struct sta_info *sta,
442 : const u8 *eap, size_t len)
443 : {
444 : struct radius_msg *msg;
445 1604 : struct eapol_state_machine *sm = sta->eapol_sm;
446 :
447 1604 : if (sm == NULL)
448 0 : return;
449 :
450 1604 : ieee802_1x_learn_identity(hapd, sm, eap, len);
451 :
452 1604 : wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
453 : "packet");
454 :
455 1604 : sm->radius_identifier = radius_client_get_id(hapd->radius);
456 1604 : msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
457 1604 : sm->radius_identifier);
458 1604 : if (msg == NULL) {
459 0 : wpa_printf(MSG_INFO, "Could not create new RADIUS packet");
460 0 : return;
461 : }
462 :
463 1604 : radius_msg_make_authenticator(msg, (u8 *) sta, sizeof(*sta));
464 :
465 3208 : if (sm->identity &&
466 3208 : !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
467 1604 : sm->identity, sm->identity_len)) {
468 0 : wpa_printf(MSG_INFO, "Could not add User-Name");
469 0 : goto fail;
470 : }
471 :
472 1604 : if (add_common_radius_attr(hapd, hapd->conf->radius_auth_req_attr, sta,
473 : msg) < 0)
474 0 : goto fail;
475 :
476 : /* TODO: should probably check MTU from driver config; 2304 is max for
477 : * IEEE 802.11, but use 1400 to avoid problems with too large packets
478 : */
479 1604 : if (!hostapd_config_get_radius_attr(hapd->conf->radius_auth_req_attr,
480 1604 : RADIUS_ATTR_FRAMED_MTU) &&
481 1604 : !radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
482 0 : wpa_printf(MSG_INFO, "Could not add Framed-MTU");
483 0 : goto fail;
484 : }
485 :
486 1604 : if (eap && !radius_msg_add_eap(msg, eap, len)) {
487 0 : wpa_printf(MSG_INFO, "Could not add EAP-Message");
488 0 : goto fail;
489 : }
490 :
491 : /* State attribute must be copied if and only if this packet is
492 : * Access-Request reply to the previous Access-Challenge */
493 2964 : if (sm->last_recv_radius &&
494 1360 : radius_msg_get_hdr(sm->last_recv_radius)->code ==
495 : RADIUS_CODE_ACCESS_CHALLENGE) {
496 1298 : int res = radius_msg_copy_attr(msg, sm->last_recv_radius,
497 : RADIUS_ATTR_STATE);
498 1298 : if (res < 0) {
499 0 : wpa_printf(MSG_INFO, "Could not copy State attribute from previous Access-Challenge");
500 0 : goto fail;
501 : }
502 1298 : if (res > 0) {
503 1298 : wpa_printf(MSG_DEBUG, "Copied RADIUS State Attribute");
504 : }
505 : }
506 :
507 1604 : if (hapd->conf->radius_request_cui) {
508 : const u8 *cui;
509 : size_t cui_len;
510 : /* Add previously learned CUI or nul CUI to request CUI */
511 6 : if (sm->radius_cui) {
512 3 : cui = wpabuf_head(sm->radius_cui);
513 3 : cui_len = wpabuf_len(sm->radius_cui);
514 : } else {
515 3 : cui = (const u8 *) "\0";
516 3 : cui_len = 1;
517 : }
518 6 : if (!radius_msg_add_attr(msg,
519 : RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
520 : cui, cui_len)) {
521 0 : wpa_printf(MSG_ERROR, "Could not add CUI");
522 0 : goto fail;
523 : }
524 : }
525 :
526 : #ifdef CONFIG_HS20
527 1604 : if (hapd->conf->hs20) {
528 493 : u8 ver = 1; /* Release 2 */
529 493 : if (!radius_msg_add_wfa(
530 : msg, RADIUS_VENDOR_ATTR_WFA_HS20_AP_VERSION,
531 : &ver, 1)) {
532 0 : wpa_printf(MSG_ERROR, "Could not add HS 2.0 AP "
533 : "version");
534 0 : goto fail;
535 : }
536 :
537 493 : if (sta->hs20_ie && wpabuf_len(sta->hs20_ie) > 0) {
538 : const u8 *pos;
539 : u8 buf[3];
540 : u16 id;
541 481 : pos = wpabuf_head_u8(sta->hs20_ie);
542 481 : buf[0] = (*pos) >> 4;
543 962 : if (((*pos) & HS20_PPS_MO_ID_PRESENT) &&
544 481 : wpabuf_len(sta->hs20_ie) >= 3)
545 481 : id = WPA_GET_LE16(pos + 1);
546 : else
547 0 : id = 0;
548 481 : WPA_PUT_BE16(buf + 1, id);
549 481 : if (!radius_msg_add_wfa(
550 : msg,
551 : RADIUS_VENDOR_ATTR_WFA_HS20_STA_VERSION,
552 : buf, sizeof(buf))) {
553 0 : wpa_printf(MSG_ERROR, "Could not add HS 2.0 "
554 : "STA version");
555 0 : goto fail;
556 : }
557 : }
558 : }
559 : #endif /* CONFIG_HS20 */
560 :
561 1604 : if (radius_client_send(hapd->radius, msg, RADIUS_AUTH, sta->addr) < 0)
562 0 : goto fail;
563 :
564 1604 : return;
565 :
566 : fail:
567 0 : radius_msg_free(msg);
568 : }
569 : #endif /* CONFIG_NO_RADIUS */
570 :
571 :
572 2946 : static void handle_eap_response(struct hostapd_data *hapd,
573 : struct sta_info *sta, struct eap_hdr *eap,
574 : size_t len)
575 : {
576 : u8 type, *data;
577 2946 : struct eapol_state_machine *sm = sta->eapol_sm;
578 2946 : if (sm == NULL)
579 0 : return;
580 :
581 2946 : data = (u8 *) (eap + 1);
582 :
583 2946 : if (len < sizeof(*eap) + 1) {
584 0 : wpa_printf(MSG_INFO, "handle_eap_response: too short response data");
585 0 : return;
586 : }
587 :
588 2946 : sm->eap_type_supp = type = data[0];
589 :
590 11784 : hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
591 : HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
592 : "id=%d len=%d) from STA: EAP Response-%s (%d)",
593 8838 : eap->code, eap->identifier, be_to_host16(eap->length),
594 : eap_server_get_name(0, type), type);
595 :
596 2946 : sm->dot1xAuthEapolRespFramesRx++;
597 :
598 2946 : wpabuf_free(sm->eap_if->eapRespData);
599 2946 : sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
600 2946 : sm->eapolEap = TRUE;
601 : }
602 :
603 :
604 : /* Process incoming EAP packet from Supplicant */
605 2946 : static void handle_eap(struct hostapd_data *hapd, struct sta_info *sta,
606 : u8 *buf, size_t len)
607 : {
608 : struct eap_hdr *eap;
609 : u16 eap_len;
610 :
611 2946 : if (len < sizeof(*eap)) {
612 0 : wpa_printf(MSG_INFO, " too short EAP packet");
613 0 : return;
614 : }
615 :
616 2946 : eap = (struct eap_hdr *) buf;
617 :
618 2946 : eap_len = be_to_host16(eap->length);
619 8838 : wpa_printf(MSG_DEBUG, "EAP: code=%d identifier=%d length=%d",
620 5892 : eap->code, eap->identifier, eap_len);
621 2946 : if (eap_len < sizeof(*eap)) {
622 0 : wpa_printf(MSG_DEBUG, " Invalid EAP length");
623 0 : return;
624 2946 : } else if (eap_len > len) {
625 0 : wpa_printf(MSG_DEBUG, " Too short frame to contain this EAP "
626 : "packet");
627 0 : return;
628 2946 : } else if (eap_len < len) {
629 0 : wpa_printf(MSG_DEBUG, " Ignoring %lu extra bytes after EAP "
630 : "packet", (unsigned long) len - eap_len);
631 : }
632 :
633 2946 : switch (eap->code) {
634 : case EAP_CODE_REQUEST:
635 0 : wpa_printf(MSG_DEBUG, " (request)");
636 0 : return;
637 : case EAP_CODE_RESPONSE:
638 2946 : wpa_printf(MSG_DEBUG, " (response)");
639 2946 : handle_eap_response(hapd, sta, eap, eap_len);
640 2946 : break;
641 : case EAP_CODE_SUCCESS:
642 0 : wpa_printf(MSG_DEBUG, " (success)");
643 0 : return;
644 : case EAP_CODE_FAILURE:
645 0 : wpa_printf(MSG_DEBUG, " (failure)");
646 0 : return;
647 : default:
648 0 : wpa_printf(MSG_DEBUG, " (unknown code)");
649 0 : return;
650 : }
651 : }
652 :
653 :
654 : static struct eapol_state_machine *
655 489 : ieee802_1x_alloc_eapol_sm(struct hostapd_data *hapd, struct sta_info *sta)
656 : {
657 489 : int flags = 0;
658 489 : if (sta->flags & WLAN_STA_PREAUTH)
659 1 : flags |= EAPOL_SM_PREAUTH;
660 489 : if (sta->wpa_sm) {
661 286 : flags |= EAPOL_SM_USES_WPA;
662 286 : if (wpa_auth_sta_get_pmksa(sta->wpa_sm))
663 9 : flags |= EAPOL_SM_FROM_PMKSA_CACHE;
664 : }
665 489 : return eapol_auth_alloc(hapd->eapol_auth, sta->addr, flags,
666 489 : sta->wps_ie, sta->p2p_ie, sta,
667 489 : sta->identity, sta->radius_cui);
668 : }
669 :
670 :
671 : /**
672 : * ieee802_1x_receive - Process the EAPOL frames from the Supplicant
673 : * @hapd: hostapd BSS data
674 : * @sa: Source address (sender of the EAPOL frame)
675 : * @buf: EAPOL frame
676 : * @len: Length of buf in octets
677 : *
678 : * This function is called for each incoming EAPOL frame from the interface
679 : */
680 4310 : void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf,
681 : size_t len)
682 : {
683 : struct sta_info *sta;
684 : struct ieee802_1x_hdr *hdr;
685 : struct ieee802_1x_eapol_key *key;
686 : u16 datalen;
687 : struct rsn_pmksa_cache_entry *pmksa;
688 : int key_mgmt;
689 :
690 4395 : if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen &&
691 85 : !hapd->conf->wps_state)
692 0 : return;
693 :
694 25860 : wpa_printf(MSG_DEBUG, "IEEE 802.1X: %lu bytes from " MACSTR,
695 25860 : (unsigned long) len, MAC2STR(sa));
696 4310 : sta = ap_get_sta(hapd, sa);
697 4313 : if (!sta || (!(sta->flags & (WLAN_STA_ASSOC | WLAN_STA_PREAUTH)) &&
698 3 : !(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED))) {
699 7 : wpa_printf(MSG_DEBUG, "IEEE 802.1X data frame from not "
700 : "associated/Pre-authenticating STA");
701 7 : return;
702 : }
703 :
704 4303 : if (len < sizeof(*hdr)) {
705 0 : wpa_printf(MSG_INFO, " too short IEEE 802.1X packet");
706 0 : return;
707 : }
708 :
709 4303 : hdr = (struct ieee802_1x_hdr *) buf;
710 4303 : datalen = be_to_host16(hdr->length);
711 12909 : wpa_printf(MSG_DEBUG, " IEEE 802.1X: version=%d type=%d length=%d",
712 8606 : hdr->version, hdr->type, datalen);
713 :
714 4303 : if (len - sizeof(*hdr) < datalen) {
715 0 : wpa_printf(MSG_INFO, " frame too short for this IEEE 802.1X packet");
716 0 : if (sta->eapol_sm)
717 0 : sta->eapol_sm->dot1xAuthEapLengthErrorFramesRx++;
718 0 : return;
719 : }
720 4303 : if (len - sizeof(*hdr) > datalen) {
721 0 : wpa_printf(MSG_DEBUG, " ignoring %lu extra octets after "
722 : "IEEE 802.1X packet",
723 0 : (unsigned long) len - sizeof(*hdr) - datalen);
724 : }
725 :
726 4303 : if (sta->eapol_sm) {
727 3581 : sta->eapol_sm->dot1xAuthLastEapolFrameVersion = hdr->version;
728 3581 : sta->eapol_sm->dot1xAuthEapolFramesRx++;
729 : }
730 :
731 4303 : key = (struct ieee802_1x_eapol_key *) (hdr + 1);
732 7324 : if (datalen >= sizeof(struct ieee802_1x_eapol_key) &&
733 4304 : hdr->type == IEEE802_1X_TYPE_EAPOL_KEY &&
734 2521 : (key->type == EAPOL_KEY_TYPE_WPA ||
735 1238 : key->type == EAPOL_KEY_TYPE_RSN)) {
736 1283 : wpa_receive(hapd->wpa_auth, sta->wpa_sm, (u8 *) hdr,
737 : sizeof(*hdr) + datalen);
738 1283 : return;
739 : }
740 :
741 4187 : if (!hapd->conf->ieee802_1x && !hapd->conf->osen &&
742 1167 : !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
743 0 : wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
744 : "802.1X not enabled and WPS not used");
745 0 : return;
746 : }
747 :
748 3020 : key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
749 3020 : if (key_mgmt != -1 && wpa_key_mgmt_wpa_psk(key_mgmt)) {
750 0 : wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore EAPOL message - "
751 : "STA is using PSK");
752 0 : return;
753 : }
754 :
755 3020 : if (!sta->eapol_sm) {
756 13 : sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
757 13 : if (!sta->eapol_sm)
758 0 : return;
759 :
760 : #ifdef CONFIG_WPS
761 13 : if (!hapd->conf->ieee802_1x && hapd->conf->wps_state) {
762 13 : u32 wflags = sta->flags & (WLAN_STA_WPS |
763 : WLAN_STA_WPS2 |
764 : WLAN_STA_MAYBE_WPS);
765 13 : if (wflags == WLAN_STA_MAYBE_WPS ||
766 : wflags == (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) {
767 : /*
768 : * Delay EAPOL frame transmission until a
769 : * possible WPS STA initiates the handshake
770 : * with EAPOL-Start. Only allow the wait to be
771 : * skipped if the STA is known to support WPS
772 : * 2.0.
773 : */
774 0 : wpa_printf(MSG_DEBUG, "WPS: Do not start "
775 : "EAPOL until EAPOL-Start is "
776 : "received");
777 0 : sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
778 : }
779 : }
780 : #endif /* CONFIG_WPS */
781 :
782 13 : sta->eapol_sm->eap_if->portEnabled = TRUE;
783 : }
784 :
785 : /* since we support version 1, we can ignore version field and proceed
786 : * as specified in version 1 standard [IEEE Std 802.1X-2001, 7.5.5] */
787 : /* TODO: actually, we are not version 1 anymore.. However, Version 2
788 : * does not change frame contents, so should be ok to process frames
789 : * more or less identically. Some changes might be needed for
790 : * verification of fields. */
791 :
792 3020 : switch (hdr->type) {
793 : case IEEE802_1X_TYPE_EAP_PACKET:
794 2946 : handle_eap(hapd, sta, (u8 *) (hdr + 1), datalen);
795 2946 : break;
796 :
797 : case IEEE802_1X_TYPE_EAPOL_START:
798 73 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
799 : HOSTAPD_LEVEL_DEBUG, "received EAPOL-Start "
800 : "from STA");
801 73 : sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
802 73 : pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
803 73 : if (pmksa) {
804 1 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
805 : HOSTAPD_LEVEL_DEBUG, "cached PMKSA "
806 : "available - ignore it since "
807 : "STA sent EAPOL-Start");
808 1 : wpa_auth_sta_clear_pmksa(sta->wpa_sm, pmksa);
809 : }
810 73 : sta->eapol_sm->eapolStart = TRUE;
811 73 : sta->eapol_sm->dot1xAuthEapolStartFramesRx++;
812 73 : eap_server_clear_identity(sta->eapol_sm->eap);
813 73 : wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
814 73 : break;
815 :
816 : case IEEE802_1X_TYPE_EAPOL_LOGOFF:
817 1 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
818 : HOSTAPD_LEVEL_DEBUG, "received EAPOL-Logoff "
819 : "from STA");
820 1 : sta->acct_terminate_cause =
821 : RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
822 1 : accounting_sta_stop(hapd, sta);
823 1 : sta->eapol_sm->eapolLogoff = TRUE;
824 1 : sta->eapol_sm->dot1xAuthEapolLogoffFramesRx++;
825 1 : eap_server_clear_identity(sta->eapol_sm->eap);
826 1 : break;
827 :
828 : case IEEE802_1X_TYPE_EAPOL_KEY:
829 0 : wpa_printf(MSG_DEBUG, " EAPOL-Key");
830 0 : if (!ap_sta_is_authorized(sta)) {
831 0 : wpa_printf(MSG_DEBUG, " Dropped key data from "
832 : "unauthorized Supplicant");
833 0 : break;
834 : }
835 0 : break;
836 :
837 : case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT:
838 0 : wpa_printf(MSG_DEBUG, " EAPOL-Encapsulated-ASF-Alert");
839 : /* TODO: implement support for this; show data */
840 0 : break;
841 :
842 : default:
843 0 : wpa_printf(MSG_DEBUG, " unknown IEEE 802.1X packet type");
844 0 : sta->eapol_sm->dot1xAuthInvalidEapolFramesRx++;
845 0 : break;
846 : }
847 :
848 3020 : eapol_auth_step(sta->eapol_sm);
849 : }
850 :
851 :
852 : /**
853 : * ieee802_1x_new_station - Start IEEE 802.1X authentication
854 : * @hapd: hostapd BSS data
855 : * @sta: The station
856 : *
857 : * This function is called to start IEEE 802.1X authentication when a new
858 : * station completes IEEE 802.11 association.
859 : */
860 1022 : void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta)
861 : {
862 : struct rsn_pmksa_cache_entry *pmksa;
863 1022 : int reassoc = 1;
864 1022 : int force_1x = 0;
865 : int key_mgmt;
866 :
867 : #ifdef CONFIG_WPS
868 1407 : if (hapd->conf->wps_state && hapd->conf->wpa &&
869 385 : (sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
870 : /*
871 : * Need to enable IEEE 802.1X/EAPOL state machines for possible
872 : * WPS handshake even if IEEE 802.1X/EAPOL is not used for
873 : * authentication in this BSS.
874 : */
875 187 : force_1x = 1;
876 : }
877 : #endif /* CONFIG_WPS */
878 :
879 1022 : if (!force_1x && !hapd->conf->ieee802_1x && !hapd->conf->osen) {
880 535 : wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - "
881 : "802.1X not enabled or forced for WPS");
882 : /*
883 : * Clear any possible EAPOL authenticator state to support
884 : * reassociation change from WPS to PSK.
885 : */
886 535 : ieee802_1x_free_station(sta);
887 535 : return;
888 : }
889 :
890 487 : key_mgmt = wpa_auth_sta_key_mgmt(sta->wpa_sm);
891 487 : if (key_mgmt != -1 && wpa_key_mgmt_wpa_psk(key_mgmt)) {
892 0 : wpa_printf(MSG_DEBUG, "IEEE 802.1X: Ignore STA - using PSK");
893 : /*
894 : * Clear any possible EAPOL authenticator state to support
895 : * reassociation change from WPA-EAP to PSK.
896 : */
897 0 : ieee802_1x_free_station(sta);
898 0 : return;
899 : }
900 :
901 487 : if (sta->eapol_sm == NULL) {
902 476 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
903 : HOSTAPD_LEVEL_DEBUG, "start authentication");
904 476 : sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
905 476 : if (sta->eapol_sm == NULL) {
906 0 : hostapd_logger(hapd, sta->addr,
907 : HOSTAPD_MODULE_IEEE8021X,
908 : HOSTAPD_LEVEL_INFO,
909 : "failed to allocate state machine");
910 0 : return;
911 : }
912 476 : reassoc = 0;
913 : }
914 :
915 : #ifdef CONFIG_WPS
916 487 : sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
917 674 : if (!hapd->conf->ieee802_1x && hapd->conf->wps_state &&
918 187 : !(sta->flags & WLAN_STA_WPS2)) {
919 : /*
920 : * Delay EAPOL frame transmission until a possible WPS STA
921 : * initiates the handshake with EAPOL-Start. Only allow the
922 : * wait to be skipped if the STA is known to support WPS 2.0.
923 : */
924 1 : wpa_printf(MSG_DEBUG, "WPS: Do not start EAPOL until "
925 : "EAPOL-Start is received");
926 1 : sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
927 : }
928 : #endif /* CONFIG_WPS */
929 :
930 487 : sta->eapol_sm->eap_if->portEnabled = TRUE;
931 :
932 : #ifdef CONFIG_IEEE80211R
933 487 : if (sta->auth_alg == WLAN_AUTH_FT) {
934 4 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
935 : HOSTAPD_LEVEL_DEBUG,
936 : "PMK from FT - skip IEEE 802.1X/EAP");
937 : /* Setup EAPOL state machines to already authenticated state
938 : * because of existing FT information from R0KH. */
939 4 : sta->eapol_sm->keyRun = TRUE;
940 4 : sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
941 4 : sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
942 4 : sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
943 4 : sta->eapol_sm->authSuccess = TRUE;
944 4 : sta->eapol_sm->authFail = FALSE;
945 4 : if (sta->eapol_sm->eap)
946 4 : eap_sm_notify_cached(sta->eapol_sm->eap);
947 : /* TODO: get vlan_id from R0KH using RRB message */
948 4 : return;
949 : }
950 : #endif /* CONFIG_IEEE80211R */
951 :
952 483 : pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
953 483 : if (pmksa) {
954 : int old_vlanid;
955 :
956 9 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
957 : HOSTAPD_LEVEL_DEBUG,
958 : "PMK from PMKSA cache - skip IEEE 802.1X/EAP");
959 : /* Setup EAPOL state machines to already authenticated state
960 : * because of existing PMKSA information in the cache. */
961 9 : sta->eapol_sm->keyRun = TRUE;
962 9 : sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
963 9 : sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
964 9 : sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
965 9 : sta->eapol_sm->authSuccess = TRUE;
966 9 : sta->eapol_sm->authFail = FALSE;
967 9 : if (sta->eapol_sm->eap)
968 9 : eap_sm_notify_cached(sta->eapol_sm->eap);
969 9 : old_vlanid = sta->vlan_id;
970 9 : pmksa_cache_to_eapol_data(pmksa, sta->eapol_sm);
971 9 : if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
972 9 : sta->vlan_id = 0;
973 9 : ap_sta_bind_vlan(hapd, sta, old_vlanid);
974 : } else {
975 474 : if (reassoc) {
976 : /*
977 : * Force EAPOL state machines to start
978 : * re-authentication without having to wait for the
979 : * Supplicant to send EAPOL-Start.
980 : */
981 11 : sta->eapol_sm->reAuthenticate = TRUE;
982 : }
983 474 : eapol_auth_step(sta->eapol_sm);
984 : }
985 : }
986 :
987 :
988 1579 : void ieee802_1x_free_station(struct sta_info *sta)
989 : {
990 1579 : struct eapol_state_machine *sm = sta->eapol_sm;
991 :
992 1579 : if (sm == NULL)
993 2669 : return;
994 :
995 489 : sta->eapol_sm = NULL;
996 :
997 : #ifndef CONFIG_NO_RADIUS
998 372 : radius_msg_free(sm->last_recv_radius);
999 372 : radius_free_class(&sm->radius_class);
1000 372 : wpabuf_free(sm->radius_cui);
1001 : #endif /* CONFIG_NO_RADIUS */
1002 :
1003 489 : os_free(sm->identity);
1004 489 : eapol_auth_free(sm);
1005 : }
1006 :
1007 :
1008 : #ifndef CONFIG_NO_RADIUS
1009 1600 : static void ieee802_1x_decapsulate_radius(struct hostapd_data *hapd,
1010 : struct sta_info *sta)
1011 : {
1012 : struct wpabuf *eap;
1013 : const struct eap_hdr *hdr;
1014 1600 : int eap_type = -1;
1015 : char buf[64];
1016 : struct radius_msg *msg;
1017 1600 : struct eapol_state_machine *sm = sta->eapol_sm;
1018 :
1019 1600 : if (sm == NULL || sm->last_recv_radius == NULL) {
1020 0 : if (sm)
1021 0 : sm->eap_if->aaaEapNoReq = TRUE;
1022 0 : return;
1023 : }
1024 :
1025 1600 : msg = sm->last_recv_radius;
1026 :
1027 1600 : eap = radius_msg_get_eap(msg);
1028 1600 : if (eap == NULL) {
1029 : /* RFC 3579, Chap. 2.6.3:
1030 : * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
1031 : * attribute */
1032 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1033 : HOSTAPD_LEVEL_WARNING, "could not extract "
1034 : "EAP-Message from RADIUS message");
1035 0 : sm->eap_if->aaaEapNoReq = TRUE;
1036 0 : return;
1037 : }
1038 :
1039 1600 : if (wpabuf_len(eap) < sizeof(*hdr)) {
1040 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1041 : HOSTAPD_LEVEL_WARNING, "too short EAP packet "
1042 : "received from authentication server");
1043 0 : wpabuf_free(eap);
1044 0 : sm->eap_if->aaaEapNoReq = TRUE;
1045 0 : return;
1046 : }
1047 :
1048 1600 : if (wpabuf_len(eap) > sizeof(*hdr))
1049 1301 : eap_type = (wpabuf_head_u8(eap))[sizeof(*hdr)];
1050 :
1051 1600 : hdr = wpabuf_head(eap);
1052 1600 : switch (hdr->code) {
1053 : case EAP_CODE_REQUEST:
1054 1301 : if (eap_type >= 0)
1055 1301 : sm->eap_type_authsrv = eap_type;
1056 2602 : os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
1057 1301 : eap_type >= 0 ? eap_server_get_name(0, eap_type) :
1058 : "??",
1059 : eap_type);
1060 1301 : break;
1061 : case EAP_CODE_RESPONSE:
1062 0 : os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
1063 0 : eap_type >= 0 ? eap_server_get_name(0, eap_type) :
1064 : "??",
1065 : eap_type);
1066 0 : break;
1067 : case EAP_CODE_SUCCESS:
1068 253 : os_strlcpy(buf, "EAP Success", sizeof(buf));
1069 253 : break;
1070 : case EAP_CODE_FAILURE:
1071 46 : os_strlcpy(buf, "EAP Failure", sizeof(buf));
1072 46 : break;
1073 : default:
1074 0 : os_strlcpy(buf, "unknown EAP code", sizeof(buf));
1075 0 : break;
1076 : }
1077 1600 : buf[sizeof(buf) - 1] = '\0';
1078 4800 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1079 : HOSTAPD_LEVEL_DEBUG, "decapsulated EAP packet (code=%d "
1080 : "id=%d len=%d) from RADIUS server: %s",
1081 4800 : hdr->code, hdr->identifier, be_to_host16(hdr->length),
1082 : buf);
1083 1600 : sm->eap_if->aaaEapReq = TRUE;
1084 :
1085 1600 : wpabuf_free(sm->eap_if->aaaEapReqData);
1086 1600 : sm->eap_if->aaaEapReqData = eap;
1087 : }
1088 :
1089 :
1090 252 : static void ieee802_1x_get_keys(struct hostapd_data *hapd,
1091 : struct sta_info *sta, struct radius_msg *msg,
1092 : struct radius_msg *req,
1093 : const u8 *shared_secret,
1094 : size_t shared_secret_len)
1095 : {
1096 : struct radius_ms_mppe_keys *keys;
1097 252 : struct eapol_state_machine *sm = sta->eapol_sm;
1098 252 : if (sm == NULL)
1099 252 : return;
1100 :
1101 252 : keys = radius_msg_get_ms_keys(msg, req, shared_secret,
1102 : shared_secret_len);
1103 :
1104 252 : if (keys && keys->send && keys->recv) {
1105 252 : size_t len = keys->send_len + keys->recv_len;
1106 504 : wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Send-Key",
1107 252 : keys->send, keys->send_len);
1108 504 : wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Recv-Key",
1109 252 : keys->recv, keys->recv_len);
1110 :
1111 252 : os_free(sm->eap_if->aaaEapKeyData);
1112 252 : sm->eap_if->aaaEapKeyData = os_malloc(len);
1113 252 : if (sm->eap_if->aaaEapKeyData) {
1114 252 : os_memcpy(sm->eap_if->aaaEapKeyData, keys->recv,
1115 : keys->recv_len);
1116 252 : os_memcpy(sm->eap_if->aaaEapKeyData + keys->recv_len,
1117 : keys->send, keys->send_len);
1118 252 : sm->eap_if->aaaEapKeyDataLen = len;
1119 252 : sm->eap_if->aaaEapKeyAvailable = TRUE;
1120 : }
1121 : }
1122 :
1123 252 : if (keys) {
1124 252 : os_free(keys->send);
1125 252 : os_free(keys->recv);
1126 252 : os_free(keys);
1127 : }
1128 : }
1129 :
1130 :
1131 252 : static void ieee802_1x_store_radius_class(struct hostapd_data *hapd,
1132 : struct sta_info *sta,
1133 : struct radius_msg *msg)
1134 : {
1135 : u8 *class;
1136 : size_t class_len;
1137 252 : struct eapol_state_machine *sm = sta->eapol_sm;
1138 : int count, i;
1139 : struct radius_attr_data *nclass;
1140 : size_t nclass_count;
1141 :
1142 252 : if (!hapd->conf->radius->acct_server || hapd->radius == NULL ||
1143 : sm == NULL)
1144 492 : return;
1145 :
1146 8 : radius_free_class(&sm->radius_class);
1147 8 : count = radius_msg_count_attr(msg, RADIUS_ATTR_CLASS, 1);
1148 8 : if (count <= 0)
1149 4 : return;
1150 :
1151 4 : nclass = os_calloc(count, sizeof(struct radius_attr_data));
1152 4 : if (nclass == NULL)
1153 0 : return;
1154 :
1155 4 : nclass_count = 0;
1156 :
1157 4 : class = NULL;
1158 8 : for (i = 0; i < count; i++) {
1159 : do {
1160 4 : if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CLASS,
1161 : &class, &class_len,
1162 : class) < 0) {
1163 0 : i = count;
1164 0 : break;
1165 : }
1166 4 : } while (class_len < 1);
1167 :
1168 4 : nclass[nclass_count].data = os_malloc(class_len);
1169 4 : if (nclass[nclass_count].data == NULL)
1170 0 : break;
1171 :
1172 4 : os_memcpy(nclass[nclass_count].data, class, class_len);
1173 4 : nclass[nclass_count].len = class_len;
1174 4 : nclass_count++;
1175 : }
1176 :
1177 4 : sm->radius_class.attr = nclass;
1178 4 : sm->radius_class.count = nclass_count;
1179 24 : wpa_printf(MSG_DEBUG, "IEEE 802.1X: Stored %lu RADIUS Class "
1180 : "attributes for " MACSTR,
1181 : (unsigned long) sm->radius_class.count,
1182 24 : MAC2STR(sta->addr));
1183 : }
1184 :
1185 :
1186 : /* Update sta->identity based on User-Name attribute in Access-Accept */
1187 252 : static void ieee802_1x_update_sta_identity(struct hostapd_data *hapd,
1188 : struct sta_info *sta,
1189 : struct radius_msg *msg)
1190 : {
1191 : u8 *buf, *identity;
1192 : size_t len;
1193 252 : struct eapol_state_machine *sm = sta->eapol_sm;
1194 :
1195 252 : if (sm == NULL)
1196 252 : return;
1197 :
1198 252 : if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &buf, &len,
1199 : NULL) < 0)
1200 252 : return;
1201 :
1202 0 : identity = (u8 *) dup_binstr(buf, len);
1203 0 : if (identity == NULL)
1204 0 : return;
1205 :
1206 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1207 : HOSTAPD_LEVEL_DEBUG, "old identity '%s' updated with "
1208 : "User-Name from Access-Accept '%s'",
1209 0 : sm->identity ? (char *) sm->identity : "N/A",
1210 : (char *) identity);
1211 :
1212 0 : os_free(sm->identity);
1213 0 : sm->identity = identity;
1214 0 : sm->identity_len = len;
1215 : }
1216 :
1217 :
1218 : /* Update CUI based on Chargeable-User-Identity attribute in Access-Accept */
1219 252 : static void ieee802_1x_update_sta_cui(struct hostapd_data *hapd,
1220 : struct sta_info *sta,
1221 : struct radius_msg *msg)
1222 : {
1223 252 : struct eapol_state_machine *sm = sta->eapol_sm;
1224 : struct wpabuf *cui;
1225 : u8 *buf;
1226 : size_t len;
1227 :
1228 252 : if (sm == NULL)
1229 247 : return;
1230 :
1231 252 : if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
1232 : &buf, &len, NULL) < 0)
1233 247 : return;
1234 :
1235 5 : cui = wpabuf_alloc_copy(buf, len);
1236 5 : if (cui == NULL)
1237 0 : return;
1238 :
1239 5 : wpabuf_free(sm->radius_cui);
1240 5 : sm->radius_cui = cui;
1241 : }
1242 :
1243 :
1244 : #ifdef CONFIG_HS20
1245 :
1246 2 : static void ieee802_1x_hs20_sub_rem(struct sta_info *sta, u8 *pos, size_t len)
1247 : {
1248 2 : sta->remediation = 1;
1249 2 : os_free(sta->remediation_url);
1250 2 : if (len > 2) {
1251 2 : sta->remediation_url = os_malloc(len);
1252 2 : if (!sta->remediation_url)
1253 2 : return;
1254 2 : sta->remediation_method = pos[0];
1255 2 : os_memcpy(sta->remediation_url, pos + 1, len - 1);
1256 2 : sta->remediation_url[len - 1] = '\0';
1257 16 : wpa_printf(MSG_DEBUG, "HS 2.0: Subscription remediation needed "
1258 : "for " MACSTR " - server method %u URL %s",
1259 14 : MAC2STR(sta->addr), sta->remediation_method,
1260 : sta->remediation_url);
1261 : } else {
1262 0 : sta->remediation_url = NULL;
1263 0 : wpa_printf(MSG_DEBUG, "HS 2.0: Subscription remediation needed "
1264 0 : "for " MACSTR, MAC2STR(sta->addr));
1265 : }
1266 : /* TODO: assign the STA into remediation VLAN or add filtering */
1267 : }
1268 :
1269 :
1270 1 : static void ieee802_1x_hs20_deauth_req(struct hostapd_data *hapd,
1271 : struct sta_info *sta, u8 *pos,
1272 : size_t len)
1273 : {
1274 1 : if (len < 3)
1275 1 : return; /* Malformed information */
1276 1 : sta->hs20_deauth_requested = 1;
1277 2 : wpa_printf(MSG_DEBUG, "HS 2.0: Deauthentication request - Code %u "
1278 : "Re-auth Delay %u",
1279 2 : *pos, WPA_GET_LE16(pos + 1));
1280 1 : wpabuf_free(sta->hs20_deauth_req);
1281 1 : sta->hs20_deauth_req = wpabuf_alloc(len + 1);
1282 1 : if (sta->hs20_deauth_req) {
1283 1 : wpabuf_put_data(sta->hs20_deauth_req, pos, 3);
1284 1 : wpabuf_put_u8(sta->hs20_deauth_req, len - 3);
1285 1 : wpabuf_put_data(sta->hs20_deauth_req, pos + 3, len - 3);
1286 : }
1287 1 : ap_sta_session_timeout(hapd, sta, hapd->conf->hs20_deauth_req_timeout);
1288 : }
1289 :
1290 :
1291 1 : static void ieee802_1x_hs20_session_info(struct hostapd_data *hapd,
1292 : struct sta_info *sta, u8 *pos,
1293 : size_t len, int session_timeout)
1294 : {
1295 : unsigned int swt;
1296 : int warning_time, beacon_int;
1297 :
1298 1 : if (len < 1)
1299 0 : return; /* Malformed information */
1300 1 : os_free(sta->hs20_session_info_url);
1301 1 : sta->hs20_session_info_url = os_malloc(len);
1302 1 : if (sta->hs20_session_info_url == NULL)
1303 0 : return;
1304 1 : swt = pos[0];
1305 1 : os_memcpy(sta->hs20_session_info_url, pos + 1, len - 1);
1306 1 : sta->hs20_session_info_url[len - 1] = '\0';
1307 1 : wpa_printf(MSG_DEBUG, "HS 2.0: Session Information URL='%s' SWT=%u "
1308 : "(session_timeout=%d)",
1309 : sta->hs20_session_info_url, swt, session_timeout);
1310 1 : if (session_timeout < 0) {
1311 0 : wpa_printf(MSG_DEBUG, "HS 2.0: No Session-Timeout set - ignore session info URL");
1312 0 : return;
1313 : }
1314 1 : if (swt == 255)
1315 0 : swt = 1; /* Use one minute as the AP selected value */
1316 :
1317 1 : if ((unsigned int) session_timeout < swt * 60)
1318 0 : warning_time = 0;
1319 : else
1320 1 : warning_time = session_timeout - swt * 60;
1321 :
1322 1 : beacon_int = hapd->iconf->beacon_int;
1323 1 : if (beacon_int < 1)
1324 0 : beacon_int = 100; /* best guess */
1325 1 : sta->hs20_disassoc_timer = swt * 60 * 1000 / beacon_int * 125 / 128;
1326 1 : if (sta->hs20_disassoc_timer > 65535)
1327 0 : sta->hs20_disassoc_timer = 65535;
1328 :
1329 1 : ap_sta_session_warning_timeout(hapd, sta, warning_time);
1330 : }
1331 :
1332 : #endif /* CONFIG_HS20 */
1333 :
1334 :
1335 252 : static void ieee802_1x_check_hs20(struct hostapd_data *hapd,
1336 : struct sta_info *sta,
1337 : struct radius_msg *msg,
1338 : int session_timeout)
1339 : {
1340 : #ifdef CONFIG_HS20
1341 : u8 *buf, *pos, *end, type, sublen;
1342 : size_t len;
1343 :
1344 252 : buf = NULL;
1345 252 : sta->remediation = 0;
1346 252 : sta->hs20_deauth_requested = 0;
1347 :
1348 : for (;;) {
1349 760 : if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_VENDOR_SPECIFIC,
1350 : &buf, &len, buf) < 0)
1351 252 : break;
1352 508 : if (len < 6)
1353 0 : continue;
1354 508 : pos = buf;
1355 508 : end = buf + len;
1356 508 : if (WPA_GET_BE32(pos) != RADIUS_VENDOR_ID_WFA)
1357 504 : continue;
1358 4 : pos += 4;
1359 :
1360 4 : type = *pos++;
1361 4 : sublen = *pos++;
1362 4 : if (sublen < 2)
1363 0 : continue; /* invalid length */
1364 4 : sublen -= 2; /* skip header */
1365 4 : if (pos + sublen > end)
1366 0 : continue; /* invalid WFA VSA */
1367 :
1368 4 : switch (type) {
1369 : case RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION:
1370 2 : ieee802_1x_hs20_sub_rem(sta, pos, sublen);
1371 2 : break;
1372 : case RADIUS_VENDOR_ATTR_WFA_HS20_DEAUTH_REQ:
1373 1 : ieee802_1x_hs20_deauth_req(hapd, sta, pos, sublen);
1374 1 : break;
1375 : case RADIUS_VENDOR_ATTR_WFA_HS20_SESSION_INFO_URL:
1376 1 : ieee802_1x_hs20_session_info(hapd, sta, pos, sublen,
1377 : session_timeout);
1378 1 : break;
1379 : }
1380 508 : }
1381 : #endif /* CONFIG_HS20 */
1382 252 : }
1383 :
1384 :
1385 : struct sta_id_search {
1386 : u8 identifier;
1387 : struct eapol_state_machine *sm;
1388 : };
1389 :
1390 :
1391 1630 : static int ieee802_1x_select_radius_identifier(struct hostapd_data *hapd,
1392 : struct sta_info *sta,
1393 : void *ctx)
1394 : {
1395 1630 : struct sta_id_search *id_search = ctx;
1396 1630 : struct eapol_state_machine *sm = sta->eapol_sm;
1397 :
1398 3231 : if (sm && sm->radius_identifier >= 0 &&
1399 1601 : sm->radius_identifier == id_search->identifier) {
1400 1600 : id_search->sm = sm;
1401 1600 : return 1;
1402 : }
1403 30 : return 0;
1404 : }
1405 :
1406 :
1407 : static struct eapol_state_machine *
1408 1600 : ieee802_1x_search_radius_identifier(struct hostapd_data *hapd, u8 identifier)
1409 : {
1410 : struct sta_id_search id_search;
1411 1600 : id_search.identifier = identifier;
1412 1600 : id_search.sm = NULL;
1413 1600 : ap_for_each_sta(hapd, ieee802_1x_select_radius_identifier, &id_search);
1414 1600 : return id_search.sm;
1415 : }
1416 :
1417 :
1418 : /**
1419 : * ieee802_1x_receive_auth - Process RADIUS frames from Authentication Server
1420 : * @msg: RADIUS response message
1421 : * @req: RADIUS request message
1422 : * @shared_secret: RADIUS shared secret
1423 : * @shared_secret_len: Length of shared_secret in octets
1424 : * @data: Context data (struct hostapd_data *)
1425 : * Returns: Processing status
1426 : */
1427 : static RadiusRxResult
1428 1600 : ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
1429 : const u8 *shared_secret, size_t shared_secret_len,
1430 : void *data)
1431 : {
1432 1600 : struct hostapd_data *hapd = data;
1433 : struct sta_info *sta;
1434 1600 : u32 session_timeout = 0, termination_action, acct_interim_interval;
1435 1600 : int session_timeout_set, old_vlanid = 0;
1436 : struct eapol_state_machine *sm;
1437 1600 : int override_eapReq = 0;
1438 1600 : struct radius_hdr *hdr = radius_msg_get_hdr(msg);
1439 :
1440 1600 : sm = ieee802_1x_search_radius_identifier(hapd, hdr->identifier);
1441 1600 : if (sm == NULL) {
1442 0 : wpa_printf(MSG_DEBUG, "IEEE 802.1X: Could not find matching "
1443 : "station for this RADIUS message");
1444 0 : return RADIUS_RX_UNKNOWN;
1445 : }
1446 1600 : sta = sm->sta;
1447 :
1448 : /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
1449 : * present when packet contains an EAP-Message attribute */
1450 1646 : if (hdr->code == RADIUS_CODE_ACCESS_REJECT &&
1451 46 : radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
1452 0 : 0) < 0 &&
1453 0 : radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
1454 0 : wpa_printf(MSG_DEBUG, "Allowing RADIUS Access-Reject without "
1455 : "Message-Authenticator since it does not include "
1456 : "EAP-Message");
1457 1600 : } else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
1458 : req, 1)) {
1459 0 : wpa_printf(MSG_INFO, "Incoming RADIUS packet did not have correct Message-Authenticator - dropped");
1460 0 : return RADIUS_RX_INVALID_AUTHENTICATOR;
1461 : }
1462 :
1463 2947 : if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
1464 2648 : hdr->code != RADIUS_CODE_ACCESS_REJECT &&
1465 1301 : hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
1466 0 : wpa_printf(MSG_INFO, "Unknown RADIUS message code");
1467 0 : return RADIUS_RX_UNKNOWN;
1468 : }
1469 :
1470 1600 : sm->radius_identifier = -1;
1471 9600 : wpa_printf(MSG_DEBUG, "RADIUS packet matching with station " MACSTR,
1472 9600 : MAC2STR(sta->addr));
1473 :
1474 1600 : radius_msg_free(sm->last_recv_radius);
1475 1600 : sm->last_recv_radius = msg;
1476 :
1477 1600 : session_timeout_set =
1478 1600 : !radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
1479 : &session_timeout);
1480 1600 : if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_TERMINATION_ACTION,
1481 : &termination_action))
1482 1600 : termination_action = RADIUS_TERMINATION_ACTION_DEFAULT;
1483 :
1484 3197 : if (hapd->conf->acct_interim_interval == 0 &&
1485 1849 : hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
1486 252 : radius_msg_get_attr_int32(msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
1487 : &acct_interim_interval) == 0) {
1488 0 : if (acct_interim_interval < 60) {
1489 0 : hostapd_logger(hapd, sta->addr,
1490 : HOSTAPD_MODULE_IEEE8021X,
1491 : HOSTAPD_LEVEL_INFO,
1492 : "ignored too small "
1493 : "Acct-Interim-Interval %d",
1494 : acct_interim_interval);
1495 : } else
1496 0 : sta->acct_interim_interval = acct_interim_interval;
1497 : }
1498 :
1499 :
1500 1600 : switch (hdr->code) {
1501 : case RADIUS_CODE_ACCESS_ACCEPT:
1502 253 : if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
1503 248 : sta->vlan_id = 0;
1504 : #ifndef CONFIG_NO_VLAN
1505 : else {
1506 5 : old_vlanid = sta->vlan_id;
1507 5 : sta->vlan_id = radius_msg_get_vlanid(msg);
1508 : }
1509 256 : if (sta->vlan_id > 0 &&
1510 3 : hostapd_vlan_id_valid(hapd->conf->vlan, sta->vlan_id)) {
1511 3 : hostapd_logger(hapd, sta->addr,
1512 : HOSTAPD_MODULE_RADIUS,
1513 : HOSTAPD_LEVEL_INFO,
1514 : "VLAN ID %d", sta->vlan_id);
1515 250 : } else if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_REQUIRED) {
1516 1 : sta->eapol_sm->authFail = TRUE;
1517 1 : hostapd_logger(hapd, sta->addr,
1518 : HOSTAPD_MODULE_IEEE8021X,
1519 : HOSTAPD_LEVEL_INFO, "authentication "
1520 : "server did not include required VLAN "
1521 : "ID in Access-Accept");
1522 1 : break;
1523 : }
1524 : #endif /* CONFIG_NO_VLAN */
1525 :
1526 252 : if (ap_sta_bind_vlan(hapd, sta, old_vlanid) < 0)
1527 0 : break;
1528 :
1529 : /* RFC 3580, Ch. 3.17 */
1530 252 : if (session_timeout_set && termination_action ==
1531 : RADIUS_TERMINATION_ACTION_RADIUS_REQUEST) {
1532 0 : sm->reAuthPeriod = session_timeout;
1533 252 : } else if (session_timeout_set)
1534 1 : ap_sta_session_timeout(hapd, sta, session_timeout);
1535 :
1536 252 : sm->eap_if->aaaSuccess = TRUE;
1537 252 : override_eapReq = 1;
1538 252 : ieee802_1x_get_keys(hapd, sta, msg, req, shared_secret,
1539 : shared_secret_len);
1540 252 : ieee802_1x_store_radius_class(hapd, sta, msg);
1541 252 : ieee802_1x_update_sta_identity(hapd, sta, msg);
1542 252 : ieee802_1x_update_sta_cui(hapd, sta, msg);
1543 253 : ieee802_1x_check_hs20(hapd, sta, msg,
1544 : session_timeout_set ?
1545 1 : (int) session_timeout : -1);
1546 252 : if (sm->eap_if->eapKeyAvailable && !sta->remediation &&
1547 0 : !sta->hs20_deauth_requested &&
1548 0 : wpa_auth_pmksa_add(sta->wpa_sm, sm->eapol_key_crypt,
1549 : session_timeout_set ?
1550 0 : (int) session_timeout : -1, sm) == 0) {
1551 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
1552 : HOSTAPD_LEVEL_DEBUG,
1553 : "Added PMKSA cache entry");
1554 : }
1555 252 : break;
1556 : case RADIUS_CODE_ACCESS_REJECT:
1557 46 : sm->eap_if->aaaFail = TRUE;
1558 46 : override_eapReq = 1;
1559 46 : break;
1560 : case RADIUS_CODE_ACCESS_CHALLENGE:
1561 1301 : sm->eap_if->aaaEapReq = TRUE;
1562 1301 : if (session_timeout_set) {
1563 : /* RFC 2869, Ch. 2.3.2; RFC 3580, Ch. 3.17 */
1564 0 : sm->eap_if->aaaMethodTimeout = session_timeout;
1565 0 : hostapd_logger(hapd, sm->addr,
1566 : HOSTAPD_MODULE_IEEE8021X,
1567 : HOSTAPD_LEVEL_DEBUG,
1568 : "using EAP timeout of %d seconds (from "
1569 : "RADIUS)",
1570 0 : sm->eap_if->aaaMethodTimeout);
1571 : } else {
1572 : /*
1573 : * Use dynamic retransmission behavior per EAP
1574 : * specification.
1575 : */
1576 1301 : sm->eap_if->aaaMethodTimeout = 0;
1577 : }
1578 1301 : break;
1579 : }
1580 :
1581 1600 : ieee802_1x_decapsulate_radius(hapd, sta);
1582 1600 : if (override_eapReq)
1583 298 : sm->eap_if->aaaEapReq = FALSE;
1584 :
1585 1600 : eapol_auth_step(sm);
1586 :
1587 1600 : return RADIUS_RX_QUEUED;
1588 : }
1589 : #endif /* CONFIG_NO_RADIUS */
1590 :
1591 :
1592 493 : void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta)
1593 : {
1594 493 : struct eapol_state_machine *sm = sta->eapol_sm;
1595 493 : if (sm == NULL)
1596 982 : return;
1597 :
1598 4 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1599 : HOSTAPD_LEVEL_DEBUG, "aborting authentication");
1600 :
1601 : #ifndef CONFIG_NO_RADIUS
1602 4 : radius_msg_free(sm->last_recv_radius);
1603 4 : sm->last_recv_radius = NULL;
1604 : #endif /* CONFIG_NO_RADIUS */
1605 :
1606 4 : if (sm->eap_if->eapTimeout) {
1607 : /*
1608 : * Disconnect the STA since it did not reply to the last EAP
1609 : * request and we cannot continue EAP processing (EAP-Failure
1610 : * could only be sent if the EAP peer actually replied).
1611 : */
1612 0 : wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "EAP Timeout, STA " MACSTR,
1613 : MAC2STR(sta->addr));
1614 :
1615 0 : sm->eap_if->portEnabled = FALSE;
1616 0 : ap_sta_disconnect(hapd, sta, sta->addr,
1617 : WLAN_REASON_PREV_AUTH_NOT_VALID);
1618 : }
1619 : }
1620 :
1621 :
1622 2 : static int ieee802_1x_rekey_broadcast(struct hostapd_data *hapd)
1623 : {
1624 2 : struct eapol_authenticator *eapol = hapd->eapol_auth;
1625 :
1626 2 : if (hapd->conf->default_wep_key_len < 1)
1627 0 : return 0;
1628 :
1629 2 : os_free(eapol->default_wep_key);
1630 2 : eapol->default_wep_key = os_malloc(hapd->conf->default_wep_key_len);
1631 4 : if (eapol->default_wep_key == NULL ||
1632 2 : random_get_bytes(eapol->default_wep_key,
1633 : hapd->conf->default_wep_key_len)) {
1634 0 : wpa_printf(MSG_INFO, "Could not generate random WEP key");
1635 0 : os_free(eapol->default_wep_key);
1636 0 : eapol->default_wep_key = NULL;
1637 0 : return -1;
1638 : }
1639 :
1640 4 : wpa_hexdump_key(MSG_DEBUG, "IEEE 802.1X: New default WEP key",
1641 2 : eapol->default_wep_key,
1642 2 : hapd->conf->default_wep_key_len);
1643 :
1644 2 : return 0;
1645 : }
1646 :
1647 :
1648 0 : static int ieee802_1x_sta_key_available(struct hostapd_data *hapd,
1649 : struct sta_info *sta, void *ctx)
1650 : {
1651 0 : if (sta->eapol_sm) {
1652 0 : sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1653 0 : eapol_auth_step(sta->eapol_sm);
1654 : }
1655 0 : return 0;
1656 : }
1657 :
1658 :
1659 2 : static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx)
1660 : {
1661 2 : struct hostapd_data *hapd = eloop_ctx;
1662 2 : struct eapol_authenticator *eapol = hapd->eapol_auth;
1663 :
1664 2 : if (eapol->default_wep_key_idx >= 3)
1665 0 : eapol->default_wep_key_idx =
1666 0 : hapd->conf->individual_wep_key_len > 0 ? 1 : 0;
1667 : else
1668 2 : eapol->default_wep_key_idx++;
1669 :
1670 2 : wpa_printf(MSG_DEBUG, "IEEE 802.1X: New default WEP key index %d",
1671 2 : eapol->default_wep_key_idx);
1672 :
1673 2 : if (ieee802_1x_rekey_broadcast(hapd)) {
1674 0 : hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
1675 : HOSTAPD_LEVEL_WARNING, "failed to generate a "
1676 : "new broadcast key");
1677 0 : os_free(eapol->default_wep_key);
1678 0 : eapol->default_wep_key = NULL;
1679 0 : return;
1680 : }
1681 :
1682 : /* TODO: Could setup key for RX here, but change default TX keyid only
1683 : * after new broadcast key has been sent to all stations. */
1684 4 : if (hostapd_drv_set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
1685 : broadcast_ether_addr,
1686 2 : eapol->default_wep_key_idx, 1, NULL, 0,
1687 2 : eapol->default_wep_key,
1688 2 : hapd->conf->default_wep_key_len)) {
1689 0 : hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
1690 : HOSTAPD_LEVEL_WARNING, "failed to configure a "
1691 : "new broadcast key");
1692 0 : os_free(eapol->default_wep_key);
1693 0 : eapol->default_wep_key = NULL;
1694 0 : return;
1695 : }
1696 :
1697 2 : ap_for_each_sta(hapd, ieee802_1x_sta_key_available, NULL);
1698 :
1699 2 : if (hapd->conf->wep_rekeying_period > 0) {
1700 2 : eloop_register_timeout(hapd->conf->wep_rekeying_period, 0,
1701 : ieee802_1x_rekey, hapd, NULL);
1702 : }
1703 : }
1704 :
1705 :
1706 3485 : static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type,
1707 : const u8 *data, size_t datalen)
1708 : {
1709 : #ifdef CONFIG_WPS
1710 3485 : struct sta_info *sta = sta_ctx;
1711 :
1712 3485 : if ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) ==
1713 : WLAN_STA_MAYBE_WPS) {
1714 : const u8 *identity;
1715 : size_t identity_len;
1716 0 : struct eapol_state_machine *sm = sta->eapol_sm;
1717 :
1718 0 : identity = eap_get_identity(sm->eap, &identity_len);
1719 0 : if (identity &&
1720 0 : ((identity_len == WSC_ID_ENROLLEE_LEN &&
1721 0 : os_memcmp(identity, WSC_ID_ENROLLEE,
1722 0 : WSC_ID_ENROLLEE_LEN) == 0) ||
1723 0 : (identity_len == WSC_ID_REGISTRAR_LEN &&
1724 0 : os_memcmp(identity, WSC_ID_REGISTRAR,
1725 : WSC_ID_REGISTRAR_LEN) == 0))) {
1726 0 : wpa_printf(MSG_DEBUG, "WPS: WLAN_STA_MAYBE_WPS -> "
1727 : "WLAN_STA_WPS");
1728 0 : sta->flags |= WLAN_STA_WPS;
1729 : }
1730 : }
1731 : #endif /* CONFIG_WPS */
1732 :
1733 3485 : ieee802_1x_send(ctx, sta_ctx, type, data, datalen);
1734 3485 : }
1735 :
1736 :
1737 1604 : static void ieee802_1x_aaa_send(void *ctx, void *sta_ctx,
1738 : const u8 *data, size_t datalen)
1739 : {
1740 : #ifndef CONFIG_NO_RADIUS
1741 1604 : struct hostapd_data *hapd = ctx;
1742 1604 : struct sta_info *sta = sta_ctx;
1743 :
1744 1604 : ieee802_1x_encapsulate_radius(hapd, sta, data, datalen);
1745 : #endif /* CONFIG_NO_RADIUS */
1746 1604 : }
1747 :
1748 :
1749 542 : static void _ieee802_1x_finished(void *ctx, void *sta_ctx, int success,
1750 : int preauth, int remediation)
1751 : {
1752 542 : struct hostapd_data *hapd = ctx;
1753 542 : struct sta_info *sta = sta_ctx;
1754 542 : if (preauth)
1755 1 : rsn_preauth_finished(hapd, sta, success);
1756 : else
1757 541 : ieee802_1x_finished(hapd, sta, success, remediation);
1758 542 : }
1759 :
1760 :
1761 252 : static int ieee802_1x_get_eap_user(void *ctx, const u8 *identity,
1762 : size_t identity_len, int phase2,
1763 : struct eap_user *user)
1764 : {
1765 252 : struct hostapd_data *hapd = ctx;
1766 : const struct hostapd_eap_user *eap_user;
1767 : int i;
1768 :
1769 252 : eap_user = hostapd_get_eap_user(hapd, identity, identity_len, phase2);
1770 252 : if (eap_user == NULL)
1771 0 : return -1;
1772 :
1773 252 : os_memset(user, 0, sizeof(*user));
1774 252 : user->phase2 = phase2;
1775 2268 : for (i = 0; i < EAP_MAX_METHODS; i++) {
1776 2016 : user->methods[i].vendor = eap_user->methods[i].vendor;
1777 2016 : user->methods[i].method = eap_user->methods[i].method;
1778 : }
1779 :
1780 252 : if (eap_user->password) {
1781 58 : user->password = os_malloc(eap_user->password_len);
1782 58 : if (user->password == NULL)
1783 0 : return -1;
1784 58 : os_memcpy(user->password, eap_user->password,
1785 : eap_user->password_len);
1786 58 : user->password_len = eap_user->password_len;
1787 58 : user->password_hash = eap_user->password_hash;
1788 : }
1789 252 : user->force_version = eap_user->force_version;
1790 252 : user->macacl = eap_user->macacl;
1791 252 : user->ttls_auth = eap_user->ttls_auth;
1792 252 : user->remediation = eap_user->remediation;
1793 :
1794 252 : return 0;
1795 : }
1796 :
1797 :
1798 129595 : static int ieee802_1x_sta_entry_alive(void *ctx, const u8 *addr)
1799 : {
1800 129595 : struct hostapd_data *hapd = ctx;
1801 : struct sta_info *sta;
1802 129595 : sta = ap_get_sta(hapd, addr);
1803 129595 : if (sta == NULL || sta->eapol_sm == NULL)
1804 1956 : return 0;
1805 127639 : return 1;
1806 : }
1807 :
1808 :
1809 4234 : static void ieee802_1x_logger(void *ctx, const u8 *addr,
1810 : eapol_logger_level level, const char *txt)
1811 : {
1812 : #ifndef CONFIG_NO_HOSTAPD_LOGGER
1813 4234 : struct hostapd_data *hapd = ctx;
1814 : int hlevel;
1815 :
1816 4234 : switch (level) {
1817 : case EAPOL_LOGGER_WARNING:
1818 250 : hlevel = HOSTAPD_LEVEL_WARNING;
1819 250 : break;
1820 : case EAPOL_LOGGER_INFO:
1821 499 : hlevel = HOSTAPD_LEVEL_INFO;
1822 499 : break;
1823 : case EAPOL_LOGGER_DEBUG:
1824 : default:
1825 3485 : hlevel = HOSTAPD_LEVEL_DEBUG;
1826 3485 : break;
1827 : }
1828 :
1829 4234 : hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE8021X, hlevel, "%s",
1830 : txt);
1831 : #endif /* CONFIG_NO_HOSTAPD_LOGGER */
1832 4234 : }
1833 :
1834 :
1835 1029 : static void ieee802_1x_set_port_authorized(void *ctx, void *sta_ctx,
1836 : int authorized)
1837 : {
1838 1029 : struct hostapd_data *hapd = ctx;
1839 1029 : struct sta_info *sta = sta_ctx;
1840 1029 : ieee802_1x_set_sta_authorized(hapd, sta, authorized);
1841 1029 : }
1842 :
1843 :
1844 493 : static void _ieee802_1x_abort_auth(void *ctx, void *sta_ctx)
1845 : {
1846 493 : struct hostapd_data *hapd = ctx;
1847 493 : struct sta_info *sta = sta_ctx;
1848 493 : ieee802_1x_abort_auth(hapd, sta);
1849 493 : }
1850 :
1851 :
1852 2 : static void _ieee802_1x_tx_key(void *ctx, void *sta_ctx)
1853 : {
1854 2 : struct hostapd_data *hapd = ctx;
1855 2 : struct sta_info *sta = sta_ctx;
1856 2 : ieee802_1x_tx_key(hapd, sta);
1857 2 : }
1858 :
1859 :
1860 7164 : static void ieee802_1x_eapol_event(void *ctx, void *sta_ctx,
1861 : enum eapol_event type)
1862 : {
1863 : /* struct hostapd_data *hapd = ctx; */
1864 7164 : struct sta_info *sta = sta_ctx;
1865 7164 : switch (type) {
1866 : case EAPOL_AUTH_SM_CHANGE:
1867 7163 : wpa_auth_sm_notify(sta->wpa_sm);
1868 7163 : break;
1869 : case EAPOL_AUTH_REAUTHENTICATE:
1870 1 : wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
1871 1 : break;
1872 : }
1873 7164 : }
1874 :
1875 :
1876 678 : int ieee802_1x_init(struct hostapd_data *hapd)
1877 : {
1878 : int i;
1879 : struct eapol_auth_config conf;
1880 : struct eapol_auth_cb cb;
1881 :
1882 678 : os_memset(&conf, 0, sizeof(conf));
1883 678 : conf.ctx = hapd;
1884 678 : conf.eap_reauth_period = hapd->conf->eap_reauth_period;
1885 678 : conf.wpa = hapd->conf->wpa;
1886 678 : conf.individual_wep_key_len = hapd->conf->individual_wep_key_len;
1887 678 : conf.eap_server = hapd->conf->eap_server;
1888 678 : conf.ssl_ctx = hapd->ssl_ctx;
1889 678 : conf.msg_ctx = hapd->msg_ctx;
1890 678 : conf.eap_sim_db_priv = hapd->eap_sim_db_priv;
1891 678 : conf.eap_req_id_text = hapd->conf->eap_req_id_text;
1892 678 : conf.eap_req_id_text_len = hapd->conf->eap_req_id_text_len;
1893 678 : conf.pac_opaque_encr_key = hapd->conf->pac_opaque_encr_key;
1894 678 : conf.eap_fast_a_id = hapd->conf->eap_fast_a_id;
1895 678 : conf.eap_fast_a_id_len = hapd->conf->eap_fast_a_id_len;
1896 678 : conf.eap_fast_a_id_info = hapd->conf->eap_fast_a_id_info;
1897 678 : conf.eap_fast_prov = hapd->conf->eap_fast_prov;
1898 678 : conf.pac_key_lifetime = hapd->conf->pac_key_lifetime;
1899 678 : conf.pac_key_refresh_time = hapd->conf->pac_key_refresh_time;
1900 678 : conf.eap_sim_aka_result_ind = hapd->conf->eap_sim_aka_result_ind;
1901 678 : conf.tnc = hapd->conf->tnc;
1902 678 : conf.wps = hapd->wps;
1903 678 : conf.fragment_size = hapd->conf->fragment_size;
1904 678 : conf.pwd_group = hapd->conf->pwd_group;
1905 678 : conf.pbc_in_m1 = hapd->conf->pbc_in_m1;
1906 678 : if (hapd->conf->server_id) {
1907 2 : conf.server_id = (const u8 *) hapd->conf->server_id;
1908 2 : conf.server_id_len = os_strlen(hapd->conf->server_id);
1909 : } else {
1910 676 : conf.server_id = (const u8 *) "hostapd";
1911 676 : conf.server_id_len = 7;
1912 : }
1913 :
1914 678 : os_memset(&cb, 0, sizeof(cb));
1915 678 : cb.eapol_send = ieee802_1x_eapol_send;
1916 678 : cb.aaa_send = ieee802_1x_aaa_send;
1917 678 : cb.finished = _ieee802_1x_finished;
1918 678 : cb.get_eap_user = ieee802_1x_get_eap_user;
1919 678 : cb.sta_entry_alive = ieee802_1x_sta_entry_alive;
1920 678 : cb.logger = ieee802_1x_logger;
1921 678 : cb.set_port_authorized = ieee802_1x_set_port_authorized;
1922 678 : cb.abort_auth = _ieee802_1x_abort_auth;
1923 678 : cb.tx_key = _ieee802_1x_tx_key;
1924 678 : cb.eapol_event = ieee802_1x_eapol_event;
1925 :
1926 678 : hapd->eapol_auth = eapol_auth_init(&conf, &cb);
1927 678 : if (hapd->eapol_auth == NULL)
1928 0 : return -1;
1929 :
1930 1167 : if ((hapd->conf->ieee802_1x || hapd->conf->wpa) &&
1931 489 : hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1))
1932 0 : return -1;
1933 :
1934 : #ifndef CONFIG_NO_RADIUS
1935 552 : if (radius_client_register(hapd->radius, RADIUS_AUTH,
1936 : ieee802_1x_receive_auth, hapd))
1937 0 : return -1;
1938 : #endif /* CONFIG_NO_RADIUS */
1939 :
1940 678 : if (hapd->conf->default_wep_key_len) {
1941 10 : for (i = 0; i < 4; i++)
1942 8 : hostapd_drv_set_key(hapd->conf->iface, hapd,
1943 : WPA_ALG_NONE, NULL, i, 0, NULL, 0,
1944 : NULL, 0);
1945 :
1946 2 : ieee802_1x_rekey(hapd, NULL);
1947 :
1948 2 : if (hapd->eapol_auth->default_wep_key == NULL)
1949 0 : return -1;
1950 : }
1951 :
1952 678 : return 0;
1953 : }
1954 :
1955 :
1956 682 : void ieee802_1x_deinit(struct hostapd_data *hapd)
1957 : {
1958 682 : eloop_cancel_timeout(ieee802_1x_rekey, hapd, NULL);
1959 :
1960 1364 : if (hapd->driver != NULL &&
1961 1146 : (hapd->conf->ieee802_1x || hapd->conf->wpa))
1962 507 : hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
1963 :
1964 682 : eapol_auth_deinit(hapd->eapol_auth);
1965 682 : hapd->eapol_auth = NULL;
1966 682 : }
1967 :
1968 :
1969 922 : int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
1970 : const u8 *buf, size_t len, int ack)
1971 : {
1972 : struct ieee80211_hdr *hdr;
1973 : u8 *pos;
1974 922 : const unsigned char rfc1042_hdr[ETH_ALEN] =
1975 : { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
1976 :
1977 922 : if (sta == NULL)
1978 0 : return -1;
1979 922 : if (len < sizeof(*hdr) + sizeof(rfc1042_hdr) + 2)
1980 229 : return 0;
1981 :
1982 693 : hdr = (struct ieee80211_hdr *) buf;
1983 693 : pos = (u8 *) (hdr + 1);
1984 693 : if (os_memcmp(pos, rfc1042_hdr, sizeof(rfc1042_hdr)) != 0)
1985 693 : return 0;
1986 0 : pos += sizeof(rfc1042_hdr);
1987 0 : if (WPA_GET_BE16(pos) != ETH_P_PAE)
1988 0 : return 0;
1989 0 : pos += 2;
1990 :
1991 0 : return ieee802_1x_eapol_tx_status(hapd, sta, pos, buf + len - pos,
1992 : ack);
1993 : }
1994 :
1995 :
1996 3593 : int ieee802_1x_eapol_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
1997 : const u8 *buf, int len, int ack)
1998 : {
1999 3593 : const struct ieee802_1x_hdr *xhdr =
2000 : (const struct ieee802_1x_hdr *) buf;
2001 3593 : const u8 *pos = buf + sizeof(*xhdr);
2002 : struct ieee802_1x_eapol_key *key;
2003 :
2004 3593 : if (len < (int) sizeof(*xhdr))
2005 0 : return 0;
2006 32337 : wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR " TX status - version=%d "
2007 : "type=%d length=%d - ack=%d",
2008 28744 : MAC2STR(sta->addr), xhdr->version, xhdr->type,
2009 3593 : be_to_host16(xhdr->length), ack);
2010 :
2011 3593 : if (xhdr->type != IEEE802_1X_TYPE_EAPOL_KEY)
2012 2581 : return 0;
2013 :
2014 1012 : if (pos + sizeof(struct wpa_eapol_key) <= buf + len) {
2015 : const struct wpa_eapol_key *wpa;
2016 1008 : wpa = (const struct wpa_eapol_key *) pos;
2017 1050 : if (wpa->type == EAPOL_KEY_TYPE_RSN ||
2018 42 : wpa->type == EAPOL_KEY_TYPE_WPA)
2019 1008 : wpa_auth_eapol_key_tx_status(hapd->wpa_auth,
2020 : sta->wpa_sm, ack);
2021 : }
2022 :
2023 : /* EAPOL EAP-Packet packets are eventually re-sent by either Supplicant
2024 : * or Authenticator state machines, but EAPOL-Key packets are not
2025 : * retransmitted in case of failure. Try to re-send failed EAPOL-Key
2026 : * packets couple of times because otherwise STA keys become
2027 : * unsynchronized with AP. */
2028 1012 : if (!ack && pos + sizeof(*key) <= buf + len) {
2029 0 : key = (struct ieee802_1x_eapol_key *) pos;
2030 0 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
2031 : HOSTAPD_LEVEL_DEBUG, "did not Ack EAPOL-Key "
2032 : "frame (%scast index=%d)",
2033 0 : key->key_index & BIT(7) ? "uni" : "broad",
2034 0 : key->key_index & ~BIT(7));
2035 : /* TODO: re-send EAPOL-Key couple of times (with short delay
2036 : * between them?). If all attempt fail, report error and
2037 : * deauthenticate STA so that it will get new keys when
2038 : * authenticating again (e.g., after returning in range).
2039 : * Separate limit/transmit state needed both for unicast and
2040 : * broadcast keys(?) */
2041 : }
2042 : /* TODO: could move unicast key configuration from ieee802_1x_tx_key()
2043 : * to here and change the key only if the EAPOL-Key packet was Acked.
2044 : */
2045 :
2046 1012 : return 1;
2047 : }
2048 :
2049 :
2050 21 : u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len)
2051 : {
2052 21 : if (sm == NULL || sm->identity == NULL)
2053 0 : return NULL;
2054 :
2055 21 : *len = sm->identity_len;
2056 21 : return sm->identity;
2057 : }
2058 :
2059 :
2060 27 : u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len,
2061 : int idx)
2062 : {
2063 43 : if (sm == NULL || sm->radius_class.attr == NULL ||
2064 16 : idx >= (int) sm->radius_class.count)
2065 19 : return NULL;
2066 :
2067 8 : *len = sm->radius_class.attr[idx].len;
2068 8 : return sm->radius_class.attr[idx].data;
2069 : }
2070 :
2071 :
2072 20 : struct wpabuf * ieee802_1x_get_radius_cui(struct eapol_state_machine *sm)
2073 : {
2074 20 : if (sm == NULL)
2075 0 : return NULL;
2076 20 : return sm->radius_cui;
2077 : }
2078 :
2079 :
2080 820 : const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len)
2081 : {
2082 820 : *len = 0;
2083 820 : if (sm == NULL)
2084 0 : return NULL;
2085 :
2086 820 : *len = sm->eap_if->eapKeyDataLen;
2087 820 : return sm->eap_if->eapKeyData;
2088 : }
2089 :
2090 :
2091 3875 : void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm,
2092 : int enabled)
2093 : {
2094 3875 : if (sm == NULL)
2095 5712 : return;
2096 2038 : sm->eap_if->portEnabled = enabled ? TRUE : FALSE;
2097 2038 : eapol_auth_step(sm);
2098 : }
2099 :
2100 :
2101 1728 : void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm,
2102 : int valid)
2103 : {
2104 1728 : if (sm == NULL)
2105 2617 : return;
2106 839 : sm->portValid = valid ? TRUE : FALSE;
2107 839 : eapol_auth_step(sm);
2108 : }
2109 :
2110 :
2111 1050 : void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, int pre_auth)
2112 : {
2113 1050 : if (sm == NULL)
2114 2089 : return;
2115 11 : if (pre_auth)
2116 0 : sm->flags |= EAPOL_SM_PREAUTH;
2117 : else
2118 11 : sm->flags &= ~EAPOL_SM_PREAUTH;
2119 : }
2120 :
2121 :
2122 8 : static const char * bool_txt(Boolean bool)
2123 : {
2124 8 : return bool ? "TRUE" : "FALSE";
2125 : }
2126 :
2127 :
2128 3 : int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
2129 : {
2130 : /* TODO */
2131 3 : return 0;
2132 : }
2133 :
2134 :
2135 29 : int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
2136 : char *buf, size_t buflen)
2137 : {
2138 29 : int len = 0, ret;
2139 29 : struct eapol_state_machine *sm = sta->eapol_sm;
2140 : struct os_reltime diff;
2141 : const char *name1;
2142 : const char *name2;
2143 :
2144 29 : if (sm == NULL)
2145 25 : return 0;
2146 :
2147 4 : ret = os_snprintf(buf + len, buflen - len,
2148 : "dot1xPaePortNumber=%d\n"
2149 : "dot1xPaePortProtocolVersion=%d\n"
2150 : "dot1xPaePortCapabilities=1\n"
2151 : "dot1xPaePortInitialize=%d\n"
2152 : "dot1xPaePortReauthenticate=FALSE\n",
2153 4 : sta->aid,
2154 : EAPOL_VERSION,
2155 4 : sm->initialize);
2156 4 : if (ret < 0 || (size_t) ret >= buflen - len)
2157 0 : return len;
2158 4 : len += ret;
2159 :
2160 : /* dot1xAuthConfigTable */
2161 12 : ret = os_snprintf(buf + len, buflen - len,
2162 : "dot1xAuthPaeState=%d\n"
2163 : "dot1xAuthBackendAuthState=%d\n"
2164 : "dot1xAuthAdminControlledDirections=%d\n"
2165 : "dot1xAuthOperControlledDirections=%d\n"
2166 : "dot1xAuthAuthControlledPortStatus=%d\n"
2167 : "dot1xAuthAuthControlledPortControl=%d\n"
2168 : "dot1xAuthQuietPeriod=%u\n"
2169 : "dot1xAuthServerTimeout=%u\n"
2170 : "dot1xAuthReAuthPeriod=%u\n"
2171 : "dot1xAuthReAuthEnabled=%s\n"
2172 : "dot1xAuthKeyTxEnabled=%s\n",
2173 4 : sm->auth_pae_state + 1,
2174 4 : sm->be_auth_state + 1,
2175 4 : sm->adminControlledDirections,
2176 4 : sm->operControlledDirections,
2177 4 : sm->authPortStatus,
2178 4 : sm->portControl,
2179 : sm->quietPeriod,
2180 : sm->serverTimeout,
2181 : sm->reAuthPeriod,
2182 : bool_txt(sm->reAuthEnabled),
2183 : bool_txt(sm->keyTxEnabled));
2184 4 : if (ret < 0 || (size_t) ret >= buflen - len)
2185 0 : return len;
2186 4 : len += ret;
2187 :
2188 : /* dot1xAuthStatsTable */
2189 24 : ret = os_snprintf(buf + len, buflen - len,
2190 : "dot1xAuthEapolFramesRx=%u\n"
2191 : "dot1xAuthEapolFramesTx=%u\n"
2192 : "dot1xAuthEapolStartFramesRx=%u\n"
2193 : "dot1xAuthEapolLogoffFramesRx=%u\n"
2194 : "dot1xAuthEapolRespIdFramesRx=%u\n"
2195 : "dot1xAuthEapolRespFramesRx=%u\n"
2196 : "dot1xAuthEapolReqIdFramesTx=%u\n"
2197 : "dot1xAuthEapolReqFramesTx=%u\n"
2198 : "dot1xAuthInvalidEapolFramesRx=%u\n"
2199 : "dot1xAuthEapLengthErrorFramesRx=%u\n"
2200 : "dot1xAuthLastEapolFrameVersion=%u\n"
2201 : "dot1xAuthLastEapolFrameSource=" MACSTR "\n",
2202 : sm->dot1xAuthEapolFramesRx,
2203 : sm->dot1xAuthEapolFramesTx,
2204 : sm->dot1xAuthEapolStartFramesRx,
2205 : sm->dot1xAuthEapolLogoffFramesRx,
2206 : sm->dot1xAuthEapolRespIdFramesRx,
2207 : sm->dot1xAuthEapolRespFramesRx,
2208 : sm->dot1xAuthEapolReqIdFramesTx,
2209 : sm->dot1xAuthEapolReqFramesTx,
2210 : sm->dot1xAuthInvalidEapolFramesRx,
2211 : sm->dot1xAuthEapLengthErrorFramesRx,
2212 : sm->dot1xAuthLastEapolFrameVersion,
2213 24 : MAC2STR(sm->addr));
2214 4 : if (ret < 0 || (size_t) ret >= buflen - len)
2215 0 : return len;
2216 4 : len += ret;
2217 :
2218 : /* dot1xAuthDiagTable */
2219 4 : ret = os_snprintf(buf + len, buflen - len,
2220 : "dot1xAuthEntersConnecting=%u\n"
2221 : "dot1xAuthEapLogoffsWhileConnecting=%u\n"
2222 : "dot1xAuthEntersAuthenticating=%u\n"
2223 : "dot1xAuthAuthSuccessesWhileAuthenticating=%u\n"
2224 : "dot1xAuthAuthTimeoutsWhileAuthenticating=%u\n"
2225 : "dot1xAuthAuthFailWhileAuthenticating=%u\n"
2226 : "dot1xAuthAuthEapStartsWhileAuthenticating=%u\n"
2227 : "dot1xAuthAuthEapLogoffWhileAuthenticating=%u\n"
2228 : "dot1xAuthAuthReauthsWhileAuthenticated=%u\n"
2229 : "dot1xAuthAuthEapStartsWhileAuthenticated=%u\n"
2230 : "dot1xAuthAuthEapLogoffWhileAuthenticated=%u\n"
2231 : "dot1xAuthBackendResponses=%u\n"
2232 : "dot1xAuthBackendAccessChallenges=%u\n"
2233 : "dot1xAuthBackendOtherRequestsToSupplicant=%u\n"
2234 : "dot1xAuthBackendAuthSuccesses=%u\n"
2235 : "dot1xAuthBackendAuthFails=%u\n",
2236 : sm->authEntersConnecting,
2237 : sm->authEapLogoffsWhileConnecting,
2238 : sm->authEntersAuthenticating,
2239 : sm->authAuthSuccessesWhileAuthenticating,
2240 : sm->authAuthTimeoutsWhileAuthenticating,
2241 : sm->authAuthFailWhileAuthenticating,
2242 : sm->authAuthEapStartsWhileAuthenticating,
2243 : sm->authAuthEapLogoffWhileAuthenticating,
2244 : sm->authAuthReauthsWhileAuthenticated,
2245 : sm->authAuthEapStartsWhileAuthenticated,
2246 : sm->authAuthEapLogoffWhileAuthenticated,
2247 : sm->backendResponses,
2248 : sm->backendAccessChallenges,
2249 : sm->backendOtherRequestsToSupplicant,
2250 : sm->backendAuthSuccesses,
2251 : sm->backendAuthFails);
2252 4 : if (ret < 0 || (size_t) ret >= buflen - len)
2253 0 : return len;
2254 4 : len += ret;
2255 :
2256 : /* dot1xAuthSessionStatsTable */
2257 4 : os_reltime_age(&sta->acct_session_start, &diff);
2258 12 : ret = os_snprintf(buf + len, buflen - len,
2259 : /* TODO: dot1xAuthSessionOctetsRx */
2260 : /* TODO: dot1xAuthSessionOctetsTx */
2261 : /* TODO: dot1xAuthSessionFramesRx */
2262 : /* TODO: dot1xAuthSessionFramesTx */
2263 : "dot1xAuthSessionId=%08X-%08X\n"
2264 : "dot1xAuthSessionAuthenticMethod=%d\n"
2265 : "dot1xAuthSessionTime=%u\n"
2266 : "dot1xAuthSessionTerminateCause=999\n"
2267 : "dot1xAuthSessionUserName=%s\n",
2268 : sta->acct_session_id_hi, sta->acct_session_id_lo,
2269 4 : (wpa_key_mgmt_wpa_ieee8021x(
2270 : wpa_auth_sta_key_mgmt(sta->wpa_sm))) ?
2271 : 1 : 2,
2272 4 : (unsigned int) diff.sec,
2273 : sm->identity);
2274 4 : if (ret < 0 || (size_t) ret >= buflen - len)
2275 0 : return len;
2276 4 : len += ret;
2277 :
2278 4 : name1 = eap_server_get_name(0, sm->eap_type_authsrv);
2279 4 : name2 = eap_server_get_name(0, sm->eap_type_supp);
2280 12 : ret = os_snprintf(buf + len, buflen - len,
2281 : "last_eap_type_as=%d (%s)\n"
2282 : "last_eap_type_sta=%d (%s)\n",
2283 4 : sm->eap_type_authsrv,
2284 : name1 ? name1 : "",
2285 4 : sm->eap_type_supp,
2286 : name2 ? name2 : "");
2287 4 : if (ret < 0 || (size_t) ret >= buflen - len)
2288 0 : return len;
2289 4 : len += ret;
2290 :
2291 4 : return len;
2292 : }
2293 :
2294 :
2295 541 : static void ieee802_1x_finished(struct hostapd_data *hapd,
2296 : struct sta_info *sta, int success,
2297 : int remediation)
2298 : {
2299 : const u8 *key;
2300 : size_t len;
2301 : /* TODO: get PMKLifetime from WPA parameters */
2302 : static const int dot11RSNAConfigPMKLifetime = 43200;
2303 :
2304 : #ifdef CONFIG_HS20
2305 541 : if (remediation && !sta->remediation) {
2306 0 : sta->remediation = 1;
2307 0 : os_free(sta->remediation_url);
2308 0 : sta->remediation_url =
2309 0 : os_strdup(hapd->conf->subscr_remediation_url);
2310 0 : sta->remediation_method = 1; /* SOAP-XML SPP */
2311 : }
2312 :
2313 541 : if (success) {
2314 290 : if (sta->remediation) {
2315 12 : wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification "
2316 : "to " MACSTR " to indicate Subscription "
2317 : "Remediation",
2318 12 : MAC2STR(sta->addr));
2319 2 : hs20_send_wnm_notification(hapd, sta->addr,
2320 2 : sta->remediation_method,
2321 2 : sta->remediation_url);
2322 2 : os_free(sta->remediation_url);
2323 2 : sta->remediation_url = NULL;
2324 : }
2325 :
2326 290 : if (sta->hs20_deauth_req) {
2327 6 : wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification "
2328 : "to " MACSTR " to indicate imminent "
2329 6 : "deauthentication", MAC2STR(sta->addr));
2330 1 : hs20_send_wnm_notification_deauth_req(
2331 1 : hapd, sta->addr, sta->hs20_deauth_req);
2332 : }
2333 : }
2334 : #endif /* CONFIG_HS20 */
2335 :
2336 541 : key = ieee802_1x_get_key(sta->eapol_sm, &len);
2337 820 : if (success && key && len >= PMK_LEN && !sta->remediation &&
2338 557 : !sta->hs20_deauth_requested &&
2339 278 : wpa_auth_pmksa_add(sta->wpa_sm, key, dot11RSNAConfigPMKLifetime,
2340 : sta->eapol_sm) == 0) {
2341 270 : hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
2342 : HOSTAPD_LEVEL_DEBUG,
2343 : "Added PMKSA cache entry (IEEE 802.1X)");
2344 : }
2345 :
2346 541 : if (!success) {
2347 : /*
2348 : * Many devices require deauthentication after WPS provisioning
2349 : * and some may not be be able to do that themselves, so
2350 : * disconnect the client here. In addition, this may also
2351 : * benefit IEEE 802.1X/EAPOL authentication cases, too since
2352 : * the EAPOL PAE state machine would remain in HELD state for
2353 : * considerable amount of time and some EAP methods, like
2354 : * EAP-FAST with anonymous provisioning, may require another
2355 : * EAPOL authentication to be started to complete connection.
2356 : */
2357 251 : wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "IEEE 802.1X: Force "
2358 : "disconnection after EAP-Failure");
2359 : /* Add a small sleep to increase likelihood of previously
2360 : * requested EAP-Failure TX getting out before this should the
2361 : * driver reorder operations.
2362 : */
2363 251 : os_sleep(0, 10000);
2364 251 : ap_sta_disconnect(hapd, sta, sta->addr,
2365 : WLAN_REASON_IEEE_802_1X_AUTH_FAILED);
2366 251 : hostapd_wps_eap_completed(hapd);
2367 : }
2368 541 : }
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