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atheros: Remove debug for ioctls that are not used anymore
[thirdparty/hostap.git] / src / ap / ieee802_1x.c
CommitLineData
6fc6879b
JM		 1/*
2 * hostapd / IEEE 802.1X-2004 Authenticator
45cefa0b 3 * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
6fc6879b
JM		 4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
6226e38d 15#include "utils/includes.h"
6fc6879b 16
6226e38d
JM		 17#include "utils/common.h"
18#include "utils/eloop.h"
03da66bd
JM		 19#include "crypto/md5.h"
20#include "crypto/crypto.h"
21#include "common/ieee802_11_defs.h"
22#include "common/wpa_ctrl.h"
6fc6879b
JM		 23#include "radius/radius.h"
24#include "radius/radius_client.h"
6226e38d 25#include "eap_server/eap.h"
4e22adb4 26#include "eap_common/eap_wsc_common.h"
281c950b 27#include "eapol_auth/eapol_auth_sm.h"
e0e14a7b 28#include "eapol_auth/eapol_auth_sm_i.h"
03da66bd 29#include "hostapd.h"
03da66bd 30#include "accounting.h"
6fc6879b 31#include "sta_info.h"
6226e38d
JM		 32#include "wpa_auth.h"
33#include "preauth_auth.h"
34#include "pmksa_cache_auth.h"
35#include "ap_config.h"
36#include "ieee802_1x.h"
6fc6879b
JM		 37
38
39static void ieee802_1x_finished(struct hostapd_data *hapd,
40 struct sta_info *sta, int success);
41
42
43static void ieee802_1x_send(struct hostapd_data *hapd, struct sta_info *sta,
44 u8 type, const u8 *data, size_t datalen)
45{
46 u8 *buf;
47 struct ieee802_1x_hdr *xhdr;
48 size_t len;
49 int encrypt = 0;
50
51 len = sizeof(*xhdr) + datalen;
52 buf = os_zalloc(len);
53 if (buf == NULL) {
54 wpa_printf(MSG_ERROR, "malloc() failed for "
55 "ieee802_1x_send(len=%lu)",
56 (unsigned long) len);
57 return;
58 }
59
60 xhdr = (struct ieee802_1x_hdr *) buf;
61 xhdr->version = hapd->conf->eapol_version;
62 xhdr->type = type;
63 xhdr->length = host_to_be16(datalen);
64
65 if (datalen > 0 && data != NULL)
66 os_memcpy(xhdr + 1, data, datalen);
67
68 if (wpa_auth_pairwise_set(sta->wpa_sm))
69 encrypt = 1;
70 if (sta->flags & WLAN_STA_PREAUTH) {
71 rsn_preauth_send(hapd, sta, buf, len);
72 } else {
45cefa0b 73 hapd->drv.send_eapol(hapd, sta->addr, buf, len, encrypt);
6fc6879b
JM		 74 }
75
76 os_free(buf);
77}
78
79
80void ieee802_1x_set_sta_authorized(struct hostapd_data *hapd,
81 struct sta_info *sta, int authorized)
82{
83 int res;
84
85 if (sta->flags & WLAN_STA_PREAUTH)
86 return;
87
88 if (authorized) {
20bd9547
JM		 89 if (!(sta->flags & WLAN_STA_AUTHORIZED))
90 wpa_msg(hapd->msg_ctx, MSG_INFO,
91 AP_STA_CONNECTED MACSTR, MAC2STR(sta->addr));
6fc6879b 92 sta->flags |= WLAN_STA_AUTHORIZED;
45cefa0b 93 res = hapd->drv.set_authorized(hapd, sta, 1);
6fc6879b
JM		 94 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
95 HOSTAPD_LEVEL_DEBUG, "authorizing port");
96 } else {
20bd9547
JM		 97 if ((sta->flags & (WLAN_STA_AUTHORIZED | WLAN_STA_ASSOC)) ==
98 (WLAN_STA_AUTHORIZED | WLAN_STA_ASSOC))
99 wpa_msg(hapd->msg_ctx, MSG_INFO,
100 AP_STA_DISCONNECTED MACSTR,
101 MAC2STR(sta->addr));
6fc6879b 102 sta->flags &= ~WLAN_STA_AUTHORIZED;
45cefa0b 103 res = hapd->drv.set_authorized(hapd, sta, 0);
6fc6879b
JM		 104 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
105 HOSTAPD_LEVEL_DEBUG, "unauthorizing port");
106 }
107
108 if (res && errno != ENOENT) {
109 printf("Could not set station " MACSTR " flags for kernel "
110 "driver (errno=%d).\n", MAC2STR(sta->addr), errno);
111 }
112
113 if (authorized)
114 accounting_sta_start(hapd, sta);
115}
116
117
6fc6879b
JM		 118static void ieee802_1x_tx_key_one(struct hostapd_data *hapd,
119 struct sta_info *sta,
120 int idx, int broadcast,
121 u8 *key_data, size_t key_len)
122{
123 u8 *buf, *ekey;
124 struct ieee802_1x_hdr *hdr;
125 struct ieee802_1x_eapol_key *key;
126 size_t len, ekey_len;
127 struct eapol_state_machine *sm = sta->eapol_sm;
128
129 if (sm == NULL)
130 return;
131
132 len = sizeof(*key) + key_len;
133 buf = os_zalloc(sizeof(*hdr) + len);
134 if (buf == NULL)
135 return;
136
137 hdr = (struct ieee802_1x_hdr *) buf;
138 key = (struct ieee802_1x_eapol_key *) (hdr + 1);
139 key->type = EAPOL_KEY_TYPE_RC4;
140 key->key_length = htons(key_len);
141 wpa_get_ntp_timestamp(key->replay_counter);
142
143 if (os_get_random(key->key_iv, sizeof(key->key_iv))) {
144 wpa_printf(MSG_ERROR, "Could not get random numbers");
145 os_free(buf);
146 return;
147 }
148
149 key->key_index = idx | (broadcast ? 0 : BIT(7));
150 if (hapd->conf->eapol_key_index_workaround) {
151 /* According to some information, WinXP Supplicant seems to
152 * interpret bit7 as an indication whether the key is to be
153 * activated, so make it possible to enable workaround that
154 * sets this bit for all keys. */
155 key->key_index |= BIT(7);
156 }
157
158 /* Key is encrypted using "Key-IV + MSK[0..31]" as the RC4-key and
159 * MSK[32..63] is used to sign the message. */
160 if (sm->eap_if->eapKeyData == NULL || sm->eap_if->eapKeyDataLen < 64) {
161 wpa_printf(MSG_ERROR, "No eapKeyData available for encrypting "
162 "and signing EAPOL-Key");
163 os_free(buf);
164 return;
165 }
166 os_memcpy((u8 *) (key + 1), key_data, key_len);
167 ekey_len = sizeof(key->key_iv) + 32;
168 ekey = os_malloc(ekey_len);
169 if (ekey == NULL) {
170 wpa_printf(MSG_ERROR, "Could not encrypt key");
171 os_free(buf);
172 return;
173 }
174 os_memcpy(ekey, key->key_iv, sizeof(key->key_iv));
175 os_memcpy(ekey + sizeof(key->key_iv), sm->eap_if->eapKeyData, 32);
8ef16831 176 rc4_skip(ekey, ekey_len, 0, (u8 *) (key + 1), key_len);
6fc6879b
JM		 177 os_free(ekey);
178
179 /* This header is needed here for HMAC-MD5, but it will be regenerated
180 * in ieee802_1x_send() */
181 hdr->version = hapd->conf->eapol_version;
182 hdr->type = IEEE802_1X_TYPE_EAPOL_KEY;
183 hdr->length = host_to_be16(len);
184 hmac_md5(sm->eap_if->eapKeyData + 32, 32, buf, sizeof(*hdr) + len,
185 key->key_signature);
186
187 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key to " MACSTR
188 " (%s index=%d)", MAC2STR(sm->addr),
189 broadcast ? "broadcast" : "unicast", idx);
190 ieee802_1x_send(hapd, sta, IEEE802_1X_TYPE_EAPOL_KEY, (u8 *) key, len);
191 if (sta->eapol_sm)
192 sta->eapol_sm->dot1xAuthEapolFramesTx++;
193 os_free(buf);
194}
195
196
30b32314 197#ifndef CONFIG_NO_VLAN
6fc6879b
JM		 198static struct hostapd_wep_keys *
199ieee802_1x_group_alloc(struct hostapd_data *hapd, const char *ifname)
200{
201 struct hostapd_wep_keys *key;
202
203 key = os_zalloc(sizeof(*key));
204 if (key == NULL)
205 return NULL;
206
207 key->default_len = hapd->conf->default_wep_key_len;
208
209 if (key->idx >= hapd->conf->broadcast_key_idx_max ||
210 key->idx < hapd->conf->broadcast_key_idx_min)
211 key->idx = hapd->conf->broadcast_key_idx_min;
212 else
213 key->idx++;
214
215 if (!key->key[key->idx])
216 key->key[key->idx] = os_malloc(key->default_len);
217 if (key->key[key->idx] == NULL ||
218 os_get_random(key->key[key->idx], key->default_len)) {
219 printf("Could not generate random WEP key (dynamic VLAN).\n");
220 os_free(key->key[key->idx]);
221 key->key[key->idx] = NULL;
222 os_free(key);
223 return NULL;
224 }
225 key->len[key->idx] = key->default_len;
226
227 wpa_printf(MSG_DEBUG, "%s: Default WEP idx %d for dynamic VLAN\n",
228 ifname, key->idx);
229 wpa_hexdump_key(MSG_DEBUG, "Default WEP key (dynamic VLAN)",
230 key->key[key->idx], key->len[key->idx]);
231
45cefa0b
JM		 232 if (hapd->drv.set_key(ifname, hapd, WPA_ALG_WEP, NULL, key->idx, 1,
233 NULL, 0, key->key[key->idx], key->len[key->idx]))
6fc6879b
JM		 234 printf("Could not set dynamic VLAN WEP encryption key.\n");
235
010401fe 236 hapd->drv.set_drv_ieee8021x(hapd, ifname, 1);
6fc6879b
JM		 237
238 return key;
239}
240
241
242static struct hostapd_wep_keys *
243ieee802_1x_get_group(struct hostapd_data *hapd, struct hostapd_ssid *ssid,
244 size_t vlan_id)
245{
246 const char *ifname;
247
248 if (vlan_id == 0)
249 return &ssid->wep;
250
251 if (vlan_id <= ssid->max_dyn_vlan_keys && ssid->dyn_vlan_keys &&
252 ssid->dyn_vlan_keys[vlan_id])
253 return ssid->dyn_vlan_keys[vlan_id];
254
255 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Creating new group "
256 "state machine for VLAN ID %lu",
257 (unsigned long) vlan_id);
258
259 ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
260 if (ifname == NULL) {
261 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Unknown VLAN ID %lu - "
262 "cannot create group key state machine",
263 (unsigned long) vlan_id);
264 return NULL;
265 }
266
267 if (ssid->dyn_vlan_keys == NULL) {
268 int size = (vlan_id + 1) * sizeof(ssid->dyn_vlan_keys[0]);
269 ssid->dyn_vlan_keys = os_zalloc(size);
270 if (ssid->dyn_vlan_keys == NULL)
271 return NULL;
272 ssid->max_dyn_vlan_keys = vlan_id;
273 }
274
275 if (ssid->max_dyn_vlan_keys < vlan_id) {
276 struct hostapd_wep_keys **na;
277 int size = (vlan_id + 1) * sizeof(ssid->dyn_vlan_keys[0]);
278 na = os_realloc(ssid->dyn_vlan_keys, size);
279 if (na == NULL)
280 return NULL;
281 ssid->dyn_vlan_keys = na;
282 os_memset(&ssid->dyn_vlan_keys[ssid->max_dyn_vlan_keys + 1], 0,
283 (vlan_id - ssid->max_dyn_vlan_keys) *
284 sizeof(ssid->dyn_vlan_keys[0]));
285 ssid->max_dyn_vlan_keys = vlan_id;
286 }
287
288 ssid->dyn_vlan_keys[vlan_id] = ieee802_1x_group_alloc(hapd, ifname);
289
290 return ssid->dyn_vlan_keys[vlan_id];
291}
30b32314 292#endif /* CONFIG_NO_VLAN */
6fc6879b
JM		 293
294
295void ieee802_1x_tx_key(struct hostapd_data *hapd, struct sta_info *sta)
296{
f55802e8 297 struct eapol_authenticator *eapol = hapd->eapol_auth;
6fc6879b 298 struct eapol_state_machine *sm = sta->eapol_sm;
30b32314
JM		 299#ifndef CONFIG_NO_VLAN
300 struct hostapd_wep_keys *key = NULL;
6fc6879b 301 int vlan_id;
30b32314 302#endif /* CONFIG_NO_VLAN */
6fc6879b
JM		 303
304 if (sm == NULL || !sm->eap_if->eapKeyData)
305 return;
306
307 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Sending EAPOL-Key(s) to " MACSTR,
308 MAC2STR(sta->addr));
309
30b32314 310#ifndef CONFIG_NO_VLAN
6fc6879b
JM		 311 vlan_id = sta->vlan_id;
312 if (vlan_id < 0 || vlan_id > MAX_VLAN_ID)
313 vlan_id = 0;
314
315 if (vlan_id) {
316 key = ieee802_1x_get_group(hapd, sta->ssid, vlan_id);
317 if (key && key->key[key->idx])
318 ieee802_1x_tx_key_one(hapd, sta, key->idx, 1,
319 key->key[key->idx],
320 key->len[key->idx]);
30b32314
JM		 321 } else
322#endif /* CONFIG_NO_VLAN */
f55802e8
JM		 323 if (eapol->default_wep_key) {
324 ieee802_1x_tx_key_one(hapd, sta, eapol->default_wep_key_idx, 1,
325 eapol->default_wep_key,
6fc6879b
JM		 326 hapd->conf->default_wep_key_len);
327 }
328
329 if (hapd->conf->individual_wep_key_len > 0) {
330 u8 *ikey;
331 ikey = os_malloc(hapd->conf->individual_wep_key_len);
332 if (ikey == NULL ||
333 os_get_random(ikey, hapd->conf->individual_wep_key_len)) {
334 wpa_printf(MSG_ERROR, "Could not generate random "
335 "individual WEP key.");
336 os_free(ikey);
337 return;
338 }
339
340 wpa_hexdump_key(MSG_DEBUG, "Individual WEP key",
341 ikey, hapd->conf->individual_wep_key_len);
342
343 ieee802_1x_tx_key_one(hapd, sta, 0, 0, ikey,
344 hapd->conf->individual_wep_key_len);
345
346 /* TODO: set encryption in TX callback, i.e., only after STA
347 * has ACKed EAPOL-Key frame */
45cefa0b
JM		 348 if (hapd->drv.set_key(hapd->conf->iface, hapd, WPA_ALG_WEP,
349 sta->addr, 0, 1, NULL, 0, ikey,
350 hapd->conf->individual_wep_key_len)) {
6fc6879b
JM		 351 wpa_printf(MSG_ERROR, "Could not set individual WEP "
352 "encryption.");
353 }
354
355 os_free(ikey);
356 }
357}
358
359
360const char *radius_mode_txt(struct hostapd_data *hapd)
361{
45cefa0b 362 switch (hapd->iface->conf->hw_mode) {
6fc6879b
JM		 363 case HOSTAPD_MODE_IEEE80211A:
364 return "802.11a";
365 case HOSTAPD_MODE_IEEE80211G:
366 return "802.11g";
367 case HOSTAPD_MODE_IEEE80211B:
368 default:
369 return "802.11b";
370 }
371}
372
373
374int radius_sta_rate(struct hostapd_data *hapd, struct sta_info *sta)
375{
376 int i;
377 u8 rate = 0;
378
379 for (i = 0; i < sta->supported_rates_len; i++)
380 if ((sta->supported_rates[i] & 0x7f) > rate)
381 rate = sta->supported_rates[i] & 0x7f;
382
383 return rate;
384}
385
386
f88bd288 387#ifndef CONFIG_NO_RADIUS
6fc6879b
JM		 388static void ieee802_1x_learn_identity(struct hostapd_data *hapd,
389 struct eapol_state_machine *sm,
390 const u8 *eap, size_t len)
391{
392 const u8 *identity;
393 size_t identity_len;
394
395 if (len <= sizeof(struct eap_hdr) ||
396 eap[sizeof(struct eap_hdr)] != EAP_TYPE_IDENTITY)
397 return;
398
399 identity = eap_get_identity(sm->eap, &identity_len);
400 if (identity == NULL)
401 return;
402
403 /* Save station identity for future RADIUS packets */
404 os_free(sm->identity);
405 sm->identity = os_malloc(identity_len + 1);
406 if (sm->identity == NULL) {
407 sm->identity_len = 0;
408 return;
409 }
410
411 os_memcpy(sm->identity, identity, identity_len);
412 sm->identity_len = identity_len;
413 sm->identity[identity_len] = '\0';
414 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
415 HOSTAPD_LEVEL_DEBUG, "STA identity '%s'", sm->identity);
416 sm->dot1xAuthEapolRespIdFramesRx++;
417}
418
419
420static void ieee802_1x_encapsulate_radius(struct hostapd_data *hapd,
421 struct sta_info *sta,
422 const u8 *eap, size_t len)
423{
424 struct radius_msg *msg;
425 char buf[128];
426 struct eapol_state_machine *sm = sta->eapol_sm;
427
428 if (sm == NULL)
429 return;
430
431 ieee802_1x_learn_identity(hapd, sm, eap, len);
432
433 wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
434 "packet");
435
436 sm->radius_identifier = radius_client_get_id(hapd->radius);
437 msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
438 sm->radius_identifier);
439 if (msg == NULL) {
440 printf("Could not create net RADIUS packet\n");
441 return;
442 }
443
444 radius_msg_make_authenticator(msg, (u8 *) sta, sizeof(*sta));
445
446 if (sm->identity &&
447 !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
448 sm->identity, sm->identity_len)) {
449 printf("Could not add User-Name\n");
450 goto fail;
451 }
452
453 if (hapd->conf->own_ip_addr.af == AF_INET &&
454 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
455 (u8 *) &hapd->conf->own_ip_addr.u.v4, 4)) {
456 printf("Could not add NAS-IP-Address\n");
457 goto fail;
458 }
459
460#ifdef CONFIG_IPV6
461 if (hapd->conf->own_ip_addr.af == AF_INET6 &&
462 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IPV6_ADDRESS,
463 (u8 *) &hapd->conf->own_ip_addr.u.v6, 16)) {
464 printf("Could not add NAS-IPv6-Address\n");
465 goto fail;
466 }
467#endif /* CONFIG_IPV6 */
468
469 if (hapd->conf->nas_identifier &&
470 !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IDENTIFIER,
471 (u8 *) hapd->conf->nas_identifier,
472 os_strlen(hapd->conf->nas_identifier))) {
473 printf("Could not add NAS-Identifier\n");
474 goto fail;
475 }
476
477 if (!radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT, sta->aid)) {
478 printf("Could not add NAS-Port\n");
479 goto fail;
480 }
481
482 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT ":%s",
483 MAC2STR(hapd->own_addr), hapd->conf->ssid.ssid);
484 buf[sizeof(buf) - 1] = '\0';
485 if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLED_STATION_ID,
486 (u8 *) buf, os_strlen(buf))) {
487 printf("Could not add Called-Station-Id\n");
488 goto fail;
489 }
490
491 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
492 MAC2STR(sta->addr));
493 buf[sizeof(buf) - 1] = '\0';
494 if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
495 (u8 *) buf, os_strlen(buf))) {
496 printf("Could not add Calling-Station-Id\n");
497 goto fail;
498 }
499
500 /* TODO: should probably check MTU from driver config; 2304 is max for
501 * IEEE 802.11, but use 1400 to avoid problems with too large packets
502 */
503 if (!radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
504 printf("Could not add Framed-MTU\n");
505 goto fail;
506 }
507
508 if (!radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
509 RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
510 printf("Could not add NAS-Port-Type\n");
511 goto fail;
512 }
513
514 if (sta->flags & WLAN_STA_PREAUTH) {
515 os_strlcpy(buf, "IEEE 802.11i Pre-Authentication",
516 sizeof(buf));
517 } else {
518 os_snprintf(buf, sizeof(buf), "CONNECT %d%sMbps %s",
519 radius_sta_rate(hapd, sta) / 2,
520 (radius_sta_rate(hapd, sta) & 1) ? ".5" : "",
521 radius_mode_txt(hapd));
522 buf[sizeof(buf) - 1] = '\0';
523 }
524 if (!radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
525 (u8 *) buf, os_strlen(buf))) {
526 printf("Could not add Connect-Info\n");
527 goto fail;
528 }
529
530 if (eap && !radius_msg_add_eap(msg, eap, len)) {
531 printf("Could not add EAP-Message\n");
532 goto fail;
533 }
534
535 /* State attribute must be copied if and only if this packet is
536 * Access-Request reply to the previous Access-Challenge */
1489e11a
JM		 537 if (sm->last_recv_radius &&
538 radius_msg_get_hdr(sm->last_recv_radius)->code ==
6fc6879b
JM		 539 RADIUS_CODE_ACCESS_CHALLENGE) {
540 int res = radius_msg_copy_attr(msg, sm->last_recv_radius,
541 RADIUS_ATTR_STATE);
542 if (res < 0) {
543 printf("Could not copy State attribute from previous "
544 "Access-Challenge\n");
545 goto fail;
546 }
547 if (res > 0) {
548 wpa_printf(MSG_DEBUG, "Copied RADIUS State Attribute");
549 }
550 }
551
552 radius_client_send(hapd->radius, msg, RADIUS_AUTH, sta->addr);
553 return;
554
555 fail:
556 radius_msg_free(msg);
6fc6879b 557}
f88bd288 558#endif /* CONFIG_NO_RADIUS */
6fc6879b
JM		 559
560
6fc6879b
JM		 561static void handle_eap_response(struct hostapd_data *hapd,
562 struct sta_info *sta, struct eap_hdr *eap,
563 size_t len)
564{
565 u8 type, *data;
566 struct eapol_state_machine *sm = sta->eapol_sm;
567 if (sm == NULL)
568 return;
569
570 data = (u8 *) (eap + 1);
571
572 if (len < sizeof(*eap) + 1) {
573 printf("handle_eap_response: too short response data\n");
574 return;
575 }
576
577 sm->eap_type_supp = type = data[0];
6fc6879b
JM		 578
579 hostapd_logger(hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X,
580 HOSTAPD_LEVEL_DEBUG, "received EAP packet (code=%d "
581 "id=%d len=%d) from STA: EAP Response-%s (%d)",
582 eap->code, eap->identifier, be_to_host16(eap->length),
2773ca09 583 eap_server_get_name(0, type), type);
6fc6879b
JM		 584
585 sm->dot1xAuthEapolRespFramesRx++;
586
587 wpabuf_free(sm->eap_if->eapRespData);
588 sm->eap_if->eapRespData = wpabuf_alloc_copy(eap, len);
589 sm->eapolEap = TRUE;
590}
591
592
593/* Process incoming EAP packet from Supplicant */
594static void handle_eap(struct hostapd_data *hapd, struct sta_info *sta,
595 u8 *buf, size_t len)
596{
597 struct eap_hdr *eap;
598 u16 eap_len;
599
600 if (len < sizeof(*eap)) {
601 printf(" too short EAP packet\n");
602 return;
603 }
604
605 eap = (struct eap_hdr *) buf;
606
607 eap_len = be_to_host16(eap->length);
608 wpa_printf(MSG_DEBUG, "EAP: code=%d identifier=%d length=%d",
609 eap->code, eap->identifier, eap_len);
610 if (eap_len < sizeof(*eap)) {
611 wpa_printf(MSG_DEBUG, " Invalid EAP length");
612 return;
613 } else if (eap_len > len) {
614 wpa_printf(MSG_DEBUG, " Too short frame to contain this EAP "
615 "packet");
616 return;
617 } else if (eap_len < len) {
618 wpa_printf(MSG_DEBUG, " Ignoring %lu extra bytes after EAP "
619 "packet", (unsigned long) len - eap_len);
620 }
621
622 switch (eap->code) {
623 case EAP_CODE_REQUEST:
624 wpa_printf(MSG_DEBUG, " (request)");
625 return;
626 case EAP_CODE_RESPONSE:
627 wpa_printf(MSG_DEBUG, " (response)");
628 handle_eap_response(hapd, sta, eap, eap_len);
629 break;
630 case EAP_CODE_SUCCESS:
631 wpa_printf(MSG_DEBUG, " (success)");
632 return;
633 case EAP_CODE_FAILURE:
634 wpa_printf(MSG_DEBUG, " (failure)");
635 return;
636 default:
637 wpa_printf(MSG_DEBUG, " (unknown code)");
638 return;
639 }
640}
641
642
c02d52b4
JM		 643static struct eapol_state_machine *
644ieee802_1x_alloc_eapol_sm(struct hostapd_data *hapd, struct sta_info *sta)
645{
646 int flags = 0;
647 if (sta->flags & WLAN_STA_PREAUTH)
648 flags |= EAPOL_SM_PREAUTH;
649 if (sta->wpa_sm) {
439d4bf9 650 flags |= EAPOL_SM_USES_WPA;
c02d52b4
JM		 651 if (wpa_auth_sta_get_pmksa(sta->wpa_sm))
652 flags |= EAPOL_SM_FROM_PMKSA_CACHE;
653 }
d79b7792 654 return eapol_auth_alloc(hapd->eapol_auth, sta->addr, flags,
f684e608 655 sta->wps_ie, sta->p2p_ie, sta);
c02d52b4
JM		 656}
657
658
1c6e69cc
JM		 659/**
660 * ieee802_1x_receive - Process the EAPOL frames from the Supplicant
661 * @hapd: hostapd BSS data
662 * @sa: Source address (sender of the EAPOL frame)
663 * @buf: EAPOL frame
664 * @len: Length of buf in octets
665 *
666 * This function is called for each incoming EAPOL frame from the interface
667 */
6fc6879b
JM		 668void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf,
669 size_t len)
670{
671 struct sta_info *sta;
672 struct ieee802_1x_hdr *hdr;
673 struct ieee802_1x_eapol_key *key;
674 u16 datalen;
675 struct rsn_pmksa_cache_entry *pmksa;
676
ad08c363
JM		 677 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa &&
678 !hapd->conf->wps_state)
6fc6879b
JM		 679 return;
680
681 wpa_printf(MSG_DEBUG, "IEEE 802.1X: %lu bytes from " MACSTR,
682 (unsigned long) len, MAC2STR(sa));
683 sta = ap_get_sta(hapd, sa);
940a0ce9
JM		 684 if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
685 wpa_printf(MSG_DEBUG, "IEEE 802.1X data frame from not "
686 "associated STA");
6fc6879b
JM		 687 return;
688 }
689
690 if (len < sizeof(*hdr)) {
691 printf(" too short IEEE 802.1X packet\n");
692 return;
693 }
694
695 hdr = (struct ieee802_1x_hdr *) buf;
696 datalen = be_to_host16(hdr->length);
697 wpa_printf(MSG_DEBUG, " IEEE 802.1X: version=%d type=%d length=%d",
698 hdr->version, hdr->type, datalen);
699
700 if (len - sizeof(*hdr) < datalen) {
701 printf(" frame too short for this IEEE 802.1X packet\n");
702 if (sta->eapol_sm)
703 sta->eapol_sm->dot1xAuthEapLengthErrorFramesRx++;
704 return;
705 }
706 if (len - sizeof(*hdr) > datalen) {
707 wpa_printf(MSG_DEBUG, " ignoring %lu extra octets after "
708 "IEEE 802.1X packet",
709 (unsigned long) len - sizeof(*hdr) - datalen);
710 }
711
712 if (sta->eapol_sm) {
713 sta->eapol_sm->dot1xAuthLastEapolFrameVersion = hdr->version;
714 sta->eapol_sm->dot1xAuthEapolFramesRx++;
715 }
716
717 key = (struct ieee802_1x_eapol_key *) (hdr + 1);
718 if (datalen >= sizeof(struct ieee802_1x_eapol_key) &&
719 hdr->type == IEEE802_1X_TYPE_EAPOL_KEY &&
720 (key->type == EAPOL_KEY_TYPE_WPA ||
721 key->type == EAPOL_KEY_TYPE_RSN)) {
722 wpa_receive(hapd->wpa_auth, sta->wpa_sm, (u8 *) hdr,
723 sizeof(*hdr) + datalen);
724 return;
725 }
726
ad08c363
JM		 727 if ((!hapd->conf->ieee802_1x &&
728 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) ||
56586197 729 wpa_key_mgmt_wpa_psk(wpa_auth_sta_key_mgmt(sta->wpa_sm)))
6fc6879b
JM		 730 return;
731
732 if (!sta->eapol_sm) {
c02d52b4 733 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
6fc6879b
JM		 734 if (!sta->eapol_sm)
735 return;
ad08c363
JM		 736
737#ifdef CONFIG_WPS
738 if (!hapd->conf->ieee802_1x &&
739 ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) ==
740 WLAN_STA_MAYBE_WPS)) {
741 /*
742 * Delay EAPOL frame transmission until a possible WPS
743 * STA initiates the handshake with EAPOL-Start.
744 */
745 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
746 }
747#endif /* CONFIG_WPS */
a60e7213
JM		 748
749 sta->eapol_sm->eap_if->portEnabled = TRUE;
6fc6879b
JM		 750 }
751
752 /* since we support version 1, we can ignore version field and proceed
753 * as specified in version 1 standard [IEEE Std 802.1X-2001, 7.5.5] */
754 /* TODO: actually, we are not version 1 anymore.. However, Version 2
755 * does not change frame contents, so should be ok to process frames
756 * more or less identically. Some changes might be needed for
757 * verification of fields. */
758
759 switch (hdr->type) {
760 case IEEE802_1X_TYPE_EAP_PACKET:
761 handle_eap(hapd, sta, (u8 *) (hdr + 1), datalen);
762 break;
763
764 case IEEE802_1X_TYPE_EAPOL_START:
765 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
766 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Start "
767 "from STA");
768 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
769 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
770 if (pmksa) {
771 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
772 HOSTAPD_LEVEL_DEBUG, "cached PMKSA "
773 "available - ignore it since "
774 "STA sent EAPOL-Start");
775 wpa_auth_sta_clear_pmksa(sta->wpa_sm, pmksa);
776 }
777 sta->eapol_sm->eapolStart = TRUE;
778 sta->eapol_sm->dot1xAuthEapolStartFramesRx++;
779 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
780 break;
781
782 case IEEE802_1X_TYPE_EAPOL_LOGOFF:
783 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
784 HOSTAPD_LEVEL_DEBUG, "received EAPOL-Logoff "
785 "from STA");
786 sta->acct_terminate_cause =
787 RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
b1fa8bf1 788 accounting_sta_stop(hapd, sta);
6fc6879b
JM		 789 sta->eapol_sm->eapolLogoff = TRUE;
790 sta->eapol_sm->dot1xAuthEapolLogoffFramesRx++;
791 break;
792
793 case IEEE802_1X_TYPE_EAPOL_KEY:
794 wpa_printf(MSG_DEBUG, " EAPOL-Key");
795 if (!(sta->flags & WLAN_STA_AUTHORIZED)) {
796 wpa_printf(MSG_DEBUG, " Dropped key data from "
797 "unauthorized Supplicant");
798 break;
799 }
800 break;
801
802 case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT:
803 wpa_printf(MSG_DEBUG, " EAPOL-Encapsulated-ASF-Alert");
804 /* TODO: implement support for this; show data */
805 break;
806
807 default:
808 wpa_printf(MSG_DEBUG, " unknown IEEE 802.1X packet type");
809 sta->eapol_sm->dot1xAuthInvalidEapolFramesRx++;
810 break;
811 }
812
813 eapol_auth_step(sta->eapol_sm);
814}
815
816
1c6e69cc
JM		 817/**
818 * ieee802_1x_new_station - Start IEEE 802.1X authentication
819 * @hapd: hostapd BSS data
820 * @sta: The station
821 *
822 * This function is called to start IEEE 802.1X authentication when a new
823 * station completes IEEE 802.11 association.
824 */
6fc6879b
JM		 825void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta)
826{
827 struct rsn_pmksa_cache_entry *pmksa;
828 int reassoc = 1;
829 int force_1x = 0;
830
ad08c363 831#ifdef CONFIG_WPS
a60e7213 832 if (hapd->conf->wps_state && hapd->conf->wpa &&
ad08c363
JM		 833 (sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) {
834 /*
835 * Need to enable IEEE 802.1X/EAPOL state machines for possible
836 * WPS handshake even if IEEE 802.1X/EAPOL is not used for
837 * authentication in this BSS.
838 */
839 force_1x = 1;
840 }
841#endif /* CONFIG_WPS */
842
6fc6879b 843 if ((!force_1x && !hapd->conf->ieee802_1x) ||
56586197 844 wpa_key_mgmt_wpa_psk(wpa_auth_sta_key_mgmt(sta->wpa_sm)))
6fc6879b
JM		 845 return;
846
847 if (sta->eapol_sm == NULL) {
848 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
849 HOSTAPD_LEVEL_DEBUG, "start authentication");
c02d52b4 850 sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
6fc6879b
JM		 851 if (sta->eapol_sm == NULL) {
852 hostapd_logger(hapd, sta->addr,
853 HOSTAPD_MODULE_IEEE8021X,
854 HOSTAPD_LEVEL_INFO,
855 "failed to allocate state machine");
856 return;
857 }
858 reassoc = 0;
859 }
860
ad08c363 861#ifdef CONFIG_WPS
a8d05fca 862 sta->eapol_sm->flags &= ~EAPOL_SM_WAIT_START;
ad08c363
JM		 863 if (!hapd->conf->ieee802_1x && !(sta->flags & WLAN_STA_WPS)) {
864 /*
865 * Delay EAPOL frame transmission until a possible WPS
866 * initiates the handshake with EAPOL-Start.
867 */
868 sta->eapol_sm->flags |= EAPOL_SM_WAIT_START;
869 }
870#endif /* CONFIG_WPS */
871
6fc6879b
JM		 872 sta->eapol_sm->eap_if->portEnabled = TRUE;
873
874 pmksa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
875 if (pmksa) {
876 int old_vlanid;
877
878 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
879 HOSTAPD_LEVEL_DEBUG,
880 "PMK from PMKSA cache - skip IEEE 802.1X/EAP");
881 /* Setup EAPOL state machines to already authenticated state
882 * because of existing PMKSA information in the cache. */
883 sta->eapol_sm->keyRun = TRUE;
884 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
885 sta->eapol_sm->auth_pae_state = AUTH_PAE_AUTHENTICATING;
886 sta->eapol_sm->be_auth_state = BE_AUTH_SUCCESS;
887 sta->eapol_sm->authSuccess = TRUE;
888 if (sta->eapol_sm->eap)
889 eap_sm_notify_cached(sta->eapol_sm->eap);
890 old_vlanid = sta->vlan_id;
891 pmksa_cache_to_eapol_data(pmksa, sta->eapol_sm);
892 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
893 sta->vlan_id = 0;
894 ap_sta_bind_vlan(hapd, sta, old_vlanid);
895 } else {
896 if (reassoc) {
897 /*
898 * Force EAPOL state machines to start
899 * re-authentication without having to wait for the
900 * Supplicant to send EAPOL-Start.
901 */
902 sta->eapol_sm->reAuthenticate = TRUE;
903 }
904 eapol_auth_step(sta->eapol_sm);
905 }
906}
907
908
6fc6879b
JM		 909void ieee802_1x_free_station(struct sta_info *sta)
910{
911 struct eapol_state_machine *sm = sta->eapol_sm;
912
6fc6879b
JM		 913 if (sm == NULL)
914 return;
915
916 sta->eapol_sm = NULL;
917
f88bd288 918#ifndef CONFIG_NO_RADIUS
9e7245bd 919 radius_msg_free(sm->last_recv_radius);
010dc068 920 radius_free_class(&sm->radius_class);
f88bd288 921#endif /* CONFIG_NO_RADIUS */
6fc6879b
JM		 922
923 os_free(sm->identity);
6fc6879b
JM		 924 eapol_auth_free(sm);
925}
926
927
f88bd288 928#ifndef CONFIG_NO_RADIUS
6fc6879b
JM		 929static void ieee802_1x_decapsulate_radius(struct hostapd_data *hapd,
930 struct sta_info *sta)
931{
932 u8 *eap;
933 size_t len;
934 struct eap_hdr *hdr;
935 int eap_type = -1;
936 char buf[64];
937 struct radius_msg *msg;
938 struct eapol_state_machine *sm = sta->eapol_sm;
939
940 if (sm == NULL || sm->last_recv_radius == NULL) {
941 if (sm)
942 sm->eap_if->aaaEapNoReq = TRUE;
943 return;
944 }
945
946 msg = sm->last_recv_radius;
947
948 eap = radius_msg_get_eap(msg, &len);
949 if (eap == NULL) {
950 /* RFC 3579, Chap. 2.6.3:
951 * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
952 * attribute */
953 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
954 HOSTAPD_LEVEL_WARNING, "could not extract "
955 "EAP-Message from RADIUS message");
956 sm->eap_if->aaaEapNoReq = TRUE;
957 return;
958 }
959
960 if (len < sizeof(*hdr)) {
961 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
962 HOSTAPD_LEVEL_WARNING, "too short EAP packet "
963 "received from authentication server");
964 os_free(eap);
965 sm->eap_if->aaaEapNoReq = TRUE;
966 return;
967 }
968
969 if (len > sizeof(*hdr))
970 eap_type = eap[sizeof(*hdr)];
971
972 hdr = (struct eap_hdr *) eap;
973 switch (hdr->code) {
974 case EAP_CODE_REQUEST:
975 if (eap_type >= 0)
976 sm->eap_type_authsrv = eap_type;
977 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
2773ca09
JM		 978 eap_type >= 0 ? eap_server_get_name(0, eap_type) :
979 "??",
6fc6879b
JM		 980 eap_type);
981 break;
982 case EAP_CODE_RESPONSE:
983 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
2773ca09
JM		 984 eap_type >= 0 ? eap_server_get_name(0, eap_type) :
985 "??",
6fc6879b
JM		 986 eap_type);
987 break;
988 case EAP_CODE_SUCCESS:
989 os_strlcpy(buf, "EAP Success", sizeof(buf));
990 break;
991 case EAP_CODE_FAILURE:
992 os_strlcpy(buf, "EAP Failure", sizeof(buf));
993 break;
994 default:
995 os_strlcpy(buf, "unknown EAP code", sizeof(buf));
996 break;
997 }
998 buf[sizeof(buf) - 1] = '\0';
999 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1000 HOSTAPD_LEVEL_DEBUG, "decapsulated EAP packet (code=%d "
1001 "id=%d len=%d) from RADIUS server: %s",
1002 hdr->code, hdr->identifier, be_to_host16(hdr->length),
1003 buf);
1004 sm->eap_if->aaaEapReq = TRUE;
1005
1006 wpabuf_free(sm->eap_if->aaaEapReqData);
1007 sm->eap_if->aaaEapReqData = wpabuf_alloc_ext_data(eap, len);
1008}
1009
1010
1011static void ieee802_1x_get_keys(struct hostapd_data *hapd,
1012 struct sta_info *sta, struct radius_msg *msg,
1013 struct radius_msg *req,
7d02e641
JM		 1014 const u8 *shared_secret,
1015 size_t shared_secret_len)
6fc6879b
JM		 1016{
1017 struct radius_ms_mppe_keys *keys;
1018 struct eapol_state_machine *sm = sta->eapol_sm;
1019 if (sm == NULL)
1020 return;
1021
1022 keys = radius_msg_get_ms_keys(msg, req, shared_secret,
1023 shared_secret_len);
1024
1025 if (keys && keys->send && keys->recv) {
1026 size_t len = keys->send_len + keys->recv_len;
1027 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Send-Key",
1028 keys->send, keys->send_len);
1029 wpa_hexdump_key(MSG_DEBUG, "MS-MPPE-Recv-Key",
1030 keys->recv, keys->recv_len);
1031
1032 os_free(sm->eap_if->aaaEapKeyData);
1033 sm->eap_if->aaaEapKeyData = os_malloc(len);
1034 if (sm->eap_if->aaaEapKeyData) {
1035 os_memcpy(sm->eap_if->aaaEapKeyData, keys->recv,
1036 keys->recv_len);
1037 os_memcpy(sm->eap_if->aaaEapKeyData + keys->recv_len,
1038 keys->send, keys->send_len);
1039 sm->eap_if->aaaEapKeyDataLen = len;
1040 sm->eap_if->aaaEapKeyAvailable = TRUE;
1041 }
1042 }
1043
1044 if (keys) {
1045 os_free(keys->send);
1046 os_free(keys->recv);
1047 os_free(keys);
1048 }
1049}
1050
1051
1052static void ieee802_1x_store_radius_class(struct hostapd_data *hapd,
1053 struct sta_info *sta,
1054 struct radius_msg *msg)
1055{
1056 u8 *class;
1057 size_t class_len;
1058 struct eapol_state_machine *sm = sta->eapol_sm;
1059 int count, i;
1060 struct radius_attr_data *nclass;
1061 size_t nclass_count;
1062
1063 if (!hapd->conf->radius->acct_server || hapd->radius == NULL ||
1064 sm == NULL)
1065 return;
1066
010dc068 1067 radius_free_class(&sm->radius_class);
6fc6879b
JM		 1068 count = radius_msg_count_attr(msg, RADIUS_ATTR_CLASS, 1);
1069 if (count <= 0)
1070 return;
1071
1072 nclass = os_zalloc(count * sizeof(struct radius_attr_data));
1073 if (nclass == NULL)
1074 return;
1075
1076 nclass_count = 0;
1077
1078 class = NULL;
1079 for (i = 0; i < count; i++) {
1080 do {
1081 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CLASS,
1082 &class, &class_len,
1083 class) < 0) {
1084 i = count;
1085 break;
1086 }
1087 } while (class_len < 1);
1088
1089 nclass[nclass_count].data = os_malloc(class_len);
1090 if (nclass[nclass_count].data == NULL)
1091 break;
1092
1093 os_memcpy(nclass[nclass_count].data, class, class_len);
1094 nclass[nclass_count].len = class_len;
1095 nclass_count++;
1096 }
1097
1098 sm->radius_class.attr = nclass;
1099 sm->radius_class.count = nclass_count;
1100 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Stored %lu RADIUS Class "
1101 "attributes for " MACSTR,
1102 (unsigned long) sm->radius_class.count,
1103 MAC2STR(sta->addr));
1104}
1105
1106
1107/* Update sta->identity based on User-Name attribute in Access-Accept */
1108static void ieee802_1x_update_sta_identity(struct hostapd_data *hapd,
1109 struct sta_info *sta,
1110 struct radius_msg *msg)
1111{
1112 u8 *buf, *identity;
1113 size_t len;
1114 struct eapol_state_machine *sm = sta->eapol_sm;
1115
1116 if (sm == NULL)
1117 return;
1118
1119 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &buf, &len,
1120 NULL) < 0)
1121 return;
1122
1123 identity = os_malloc(len + 1);
1124 if (identity == NULL)
1125 return;
1126
1127 os_memcpy(identity, buf, len);
1128 identity[len] = '\0';
1129
1130 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1131 HOSTAPD_LEVEL_DEBUG, "old identity '%s' updated with "
1132 "User-Name from Access-Accept '%s'",
1133 sm->identity ? (char *) sm->identity : "N/A",
1134 (char *) identity);
1135
1136 os_free(sm->identity);
1137 sm->identity = identity;
1138 sm->identity_len = len;
1139}
1140
1141
1142struct sta_id_search {
1143 u8 identifier;
1144 struct eapol_state_machine *sm;
1145};
1146
1147
1148static int ieee802_1x_select_radius_identifier(struct hostapd_data *hapd,
1149 struct sta_info *sta,
1150 void *ctx)
1151{
1152 struct sta_id_search *id_search = ctx;
1153 struct eapol_state_machine *sm = sta->eapol_sm;
1154
1155 if (sm && sm->radius_identifier >= 0 &&
1156 sm->radius_identifier == id_search->identifier) {
1157 id_search->sm = sm;
1158 return 1;
1159 }
1160 return 0;
1161}
1162
1163
1164static struct eapol_state_machine *
1165ieee802_1x_search_radius_identifier(struct hostapd_data *hapd, u8 identifier)
1166{
1167 struct sta_id_search id_search;
1168 id_search.identifier = identifier;
1169 id_search.sm = NULL;
1170 ap_for_each_sta(hapd, ieee802_1x_select_radius_identifier, &id_search);
1171 return id_search.sm;
1172}
1173
1174
1c6e69cc
JM		 1175/**
1176 * ieee802_1x_receive_auth - Process RADIUS frames from Authentication Server
1177 * @msg: RADIUS response message
1178 * @req: RADIUS request message
1179 * @shared_secret: RADIUS shared secret
1180 * @shared_secret_len: Length of shared_secret in octets
1181 * @data: Context data (struct hostapd_data *)
1182 * Returns: Processing status
1183 */
6fc6879b
JM		 1184static RadiusRxResult
1185ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
7d02e641 1186 const u8 *shared_secret, size_t shared_secret_len,
6fc6879b
JM		 1187 void *data)
1188{
1189 struct hostapd_data *hapd = data;
1190 struct sta_info *sta;
1191 u32 session_timeout = 0, termination_action, acct_interim_interval;
1192 int session_timeout_set, old_vlanid = 0;
6fc6879b
JM		 1193 struct eapol_state_machine *sm;
1194 int override_eapReq = 0;
1489e11a 1195 struct radius_hdr *hdr = radius_msg_get_hdr(msg);
6fc6879b 1196
1489e11a 1197 sm = ieee802_1x_search_radius_identifier(hapd, hdr->identifier);
6fc6879b
JM		 1198 if (sm == NULL) {
1199 wpa_printf(MSG_DEBUG, "IEEE 802.1X: Could not find matching "
1200 "station for this RADIUS message");
1201 return RADIUS_RX_UNKNOWN;
1202 }
1203 sta = sm->sta;
1204
1205 /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
1206 * present when packet contains an EAP-Message attribute */
1489e11a 1207 if (hdr->code == RADIUS_CODE_ACCESS_REJECT &&
6fc6879b
JM		 1208 radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
1209 0) < 0 &&
1210 radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
1211 wpa_printf(MSG_DEBUG, "Allowing RADIUS Access-Reject without "
1212 "Message-Authenticator since it does not include "
1213 "EAP-Message");
1214 } else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
1215 req, 1)) {
1216 printf("Incoming RADIUS packet did not have correct "
1217 "Message-Authenticator - dropped\n");
1218 return RADIUS_RX_INVALID_AUTHENTICATOR;
1219 }
1220
1489e11a
JM		 1221 if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
1222 hdr->code != RADIUS_CODE_ACCESS_REJECT &&
1223 hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
6fc6879b
JM		 1224 printf("Unknown RADIUS message code\n");
1225 return RADIUS_RX_UNKNOWN;
1226 }
1227
1228 sm->radius_identifier = -1;
1229 wpa_printf(MSG_DEBUG, "RADIUS packet matching with station " MACSTR,
1230 MAC2STR(sta->addr));
1231
9e7245bd 1232 radius_msg_free(sm->last_recv_radius);
6fc6879b
JM		 1233 sm->last_recv_radius = msg;
1234
1235 session_timeout_set =
1236 !radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
1237 &session_timeout);
1238 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_TERMINATION_ACTION,
1239 &termination_action))
1240 termination_action = RADIUS_TERMINATION_ACTION_DEFAULT;
1241
5843e1c9 1242 if (hapd->conf->acct_interim_interval == 0 &&
1489e11a 1243 hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
6fc6879b
JM		 1244 radius_msg_get_attr_int32(msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
1245 &acct_interim_interval) == 0) {
1246 if (acct_interim_interval < 60) {
1247 hostapd_logger(hapd, sta->addr,
1248 HOSTAPD_MODULE_IEEE8021X,
1249 HOSTAPD_LEVEL_INFO,
1250 "ignored too small "
1251 "Acct-Interim-Interval %d",
1252 acct_interim_interval);
1253 } else
1254 sta->acct_interim_interval = acct_interim_interval;
1255 }
1256
1257
1489e11a 1258 switch (hdr->code) {
6fc6879b
JM		 1259 case RADIUS_CODE_ACCESS_ACCEPT:
1260 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
1261 sta->vlan_id = 0;
30b32314 1262#ifndef CONFIG_NO_VLAN
6fc6879b
JM		 1263 else {
1264 old_vlanid = sta->vlan_id;
1265 sta->vlan_id = radius_msg_get_vlanid(msg);
1266 }
1267 if (sta->vlan_id > 0 &&
1268 hostapd_get_vlan_id_ifname(hapd->conf->vlan,
1269 sta->vlan_id)) {
1270 hostapd_logger(hapd, sta->addr,
1271 HOSTAPD_MODULE_RADIUS,
1272 HOSTAPD_LEVEL_INFO,
1273 "VLAN ID %d", sta->vlan_id);
1274 } else if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_REQUIRED) {
1275 sta->eapol_sm->authFail = TRUE;
1276 hostapd_logger(hapd, sta->addr,
1277 HOSTAPD_MODULE_IEEE8021X,
1278 HOSTAPD_LEVEL_INFO, "authentication "
1279 "server did not include required VLAN "
1280 "ID in Access-Accept");
1281 break;
1282 }
30b32314 1283#endif /* CONFIG_NO_VLAN */
6fc6879b 1284
4254100d
JM		 1285 if (ap_sta_bind_vlan(hapd, sta, old_vlanid) < 0)
1286 break;
6fc6879b
JM		 1287
1288 /* RFC 3580, Ch. 3.17 */
1289 if (session_timeout_set && termination_action ==
1290 RADIUS_TERMINATION_ACTION_RADIUS_REQUEST) {
1291 sm->reAuthPeriod = session_timeout;
1292 } else if (session_timeout_set)
1293 ap_sta_session_timeout(hapd, sta, session_timeout);
1294
1295 sm->eap_if->aaaSuccess = TRUE;
1296 override_eapReq = 1;
1297 ieee802_1x_get_keys(hapd, sta, msg, req, shared_secret,
1298 shared_secret_len);
1299 ieee802_1x_store_radius_class(hapd, sta, msg);
1300 ieee802_1x_update_sta_identity(hapd, sta, msg);
1301 if (sm->eap_if->eapKeyAvailable &&
1302 wpa_auth_pmksa_add(sta->wpa_sm, sm->eapol_key_crypt,
1303 session_timeout_set ?
1304 (int) session_timeout : -1, sm) == 0) {
1305 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
1306 HOSTAPD_LEVEL_DEBUG,
1307 "Added PMKSA cache entry");
1308 }
1309 break;
1310 case RADIUS_CODE_ACCESS_REJECT:
1311 sm->eap_if->aaaFail = TRUE;
1312 override_eapReq = 1;
1313 break;
1314 case RADIUS_CODE_ACCESS_CHALLENGE:
1315 sm->eap_if->aaaEapReq = TRUE;
1316 if (session_timeout_set) {
1317 /* RFC 2869, Ch. 2.3.2; RFC 3580, Ch. 3.17 */
8e09c6d2
JM		 1318 sm->eap_if->aaaMethodTimeout = session_timeout;
1319 hostapd_logger(hapd, sm->addr,
1320 HOSTAPD_MODULE_IEEE8021X,
1321 HOSTAPD_LEVEL_DEBUG,
1322 "using EAP timeout of %d seconds (from "
1323 "RADIUS)",
1324 sm->eap_if->aaaMethodTimeout);
1325 } else {
1326 /*
1327 * Use dynamic retransmission behavior per EAP
1328 * specification.
1329 */
1330 sm->eap_if->aaaMethodTimeout = 0;
1331 }
6fc6879b
JM		 1332 break;
1333 }
1334
1335 ieee802_1x_decapsulate_radius(hapd, sta);
1336 if (override_eapReq)
1337 sm->eap_if->aaaEapReq = FALSE;
1338
1339 eapol_auth_step(sm);
1340
1341 return RADIUS_RX_QUEUED;
1342}
f88bd288 1343#endif /* CONFIG_NO_RADIUS */
6fc6879b
JM		 1344
1345
1346void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta)
1347{
1348 struct eapol_state_machine *sm = sta->eapol_sm;
1349 if (sm == NULL)
1350 return;
1351
1352 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1353 HOSTAPD_LEVEL_DEBUG, "aborting authentication");
1354
f88bd288 1355#ifndef CONFIG_NO_RADIUS
9e7245bd
JM		 1356 radius_msg_free(sm->last_recv_radius);
1357 sm->last_recv_radius = NULL;
f88bd288 1358#endif /* CONFIG_NO_RADIUS */
805e6dc6
JM		 1359
1360 if (sm->eap_if->eapTimeout) {
1361 /*
1362 * Disconnect the STA since it did not reply to the last EAP
1363 * request and we cannot continue EAP processing (EAP-Failure
1364 * could only be sent if the EAP peer actually replied).
1365 */
1366 sm->eap_if->portEnabled = FALSE;
45cefa0b
JM		 1367 ap_sta_disconnect(hapd, sta, sta->addr,
1368 WLAN_REASON_PREV_AUTH_NOT_VALID);
805e6dc6 1369 }
6fc6879b
JM		 1370}
1371
1372
6fc6879b
JM		 1373static int ieee802_1x_rekey_broadcast(struct hostapd_data *hapd)
1374{
f55802e8
JM		 1375 struct eapol_authenticator *eapol = hapd->eapol_auth;
1376
6fc6879b
JM		 1377 if (hapd->conf->default_wep_key_len < 1)
1378 return 0;
1379
f55802e8
JM		 1380 os_free(eapol->default_wep_key);
1381 eapol->default_wep_key = os_malloc(hapd->conf->default_wep_key_len);
1382 if (eapol->default_wep_key == NULL ||
1383 os_get_random(eapol->default_wep_key,
6fc6879b
JM		 1384 hapd->conf->default_wep_key_len)) {
1385 printf("Could not generate random WEP key.\n");
f55802e8
JM		 1386 os_free(eapol->default_wep_key);
1387 eapol->default_wep_key = NULL;
6fc6879b
JM		 1388 return -1;
1389 }
1390
1391 wpa_hexdump_key(MSG_DEBUG, "IEEE 802.1X: New default WEP key",
f55802e8 1392 eapol->default_wep_key,
6fc6879b
JM		 1393 hapd->conf->default_wep_key_len);
1394
1395 return 0;
1396}
1397
1398
1399static int ieee802_1x_sta_key_available(struct hostapd_data *hapd,
1400 struct sta_info *sta, void *ctx)
1401{
1402 if (sta->eapol_sm) {
1403 sta->eapol_sm->eap_if->eapKeyAvailable = TRUE;
1404 eapol_auth_step(sta->eapol_sm);
1405 }
1406 return 0;
1407}
1408
1409
1410static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx)
1411{
1412 struct hostapd_data *hapd = eloop_ctx;
f55802e8 1413 struct eapol_authenticator *eapol = hapd->eapol_auth;
6fc6879b 1414
f55802e8
JM		 1415 if (eapol->default_wep_key_idx >= 3)
1416 eapol->default_wep_key_idx =
6fc6879b
JM		 1417 hapd->conf->individual_wep_key_len > 0 ? 1 : 0;
1418 else
f55802e8 1419 eapol->default_wep_key_idx++;
6fc6879b
JM		 1420
1421 wpa_printf(MSG_DEBUG, "IEEE 802.1X: New default WEP key index %d",
f55802e8 1422 eapol->default_wep_key_idx);
6fc6879b
JM		 1423
1424 if (ieee802_1x_rekey_broadcast(hapd)) {
1425 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
1426 HOSTAPD_LEVEL_WARNING, "failed to generate a "
1427 "new broadcast key");
f55802e8
JM		 1428 os_free(eapol->default_wep_key);
1429 eapol->default_wep_key = NULL;
6fc6879b
JM		 1430 return;
1431 }
1432
1433 /* TODO: Could setup key for RX here, but change default TX keyid only
1434 * after new broadcast key has been sent to all stations. */
45cefa0b
JM		 1435 if (hapd->drv.set_key(hapd->conf->iface, hapd, WPA_ALG_WEP, NULL,
1436 eapol->default_wep_key_idx, 1, NULL, 0,
1437 eapol->default_wep_key,
1438 hapd->conf->default_wep_key_len)) {
6fc6879b
JM		 1439 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE8021X,
1440 HOSTAPD_LEVEL_WARNING, "failed to configure a "
1441 "new broadcast key");
f55802e8
JM		 1442 os_free(eapol->default_wep_key);
1443 eapol->default_wep_key = NULL;
6fc6879b
JM		 1444 return;
1445 }
1446
1447 ap_for_each_sta(hapd, ieee802_1x_sta_key_available, NULL);
1448
1449 if (hapd->conf->wep_rekeying_period > 0) {
1450 eloop_register_timeout(hapd->conf->wep_rekeying_period, 0,
1451 ieee802_1x_rekey, hapd, NULL);
1452 }
1453}
1454
1455
1456static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type,
1457 const u8 *data, size_t datalen)
1458{
4e22adb4
JM		 1459#ifdef CONFIG_WPS
1460 struct sta_info *sta = sta_ctx;
1461
1462 if ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) ==
1463 WLAN_STA_MAYBE_WPS) {
1464 const u8 *identity;
1465 size_t identity_len;
1466 struct eapol_state_machine *sm = sta->eapol_sm;
1467
1468 identity = eap_get_identity(sm->eap, &identity_len);
1469 if (identity &&
1470 ((identity_len == WSC_ID_ENROLLEE_LEN &&
1471 os_memcmp(identity, WSC_ID_ENROLLEE,
1472 WSC_ID_ENROLLEE_LEN) == 0) ||
1473 (identity_len == WSC_ID_REGISTRAR_LEN &&
1474 os_memcmp(identity, WSC_ID_REGISTRAR,
1475 WSC_ID_REGISTRAR_LEN) == 0))) {
1476 wpa_printf(MSG_DEBUG, "WPS: WLAN_STA_MAYBE_WPS -> "
1477 "WLAN_STA_WPS");
1478 sta->flags |= WLAN_STA_WPS;
1479 }
1480 }
1481#endif /* CONFIG_WPS */
1482
6fc6879b
JM		 1483 ieee802_1x_send(ctx, sta_ctx, type, data, datalen);
1484}
1485
1486
1487static void ieee802_1x_aaa_send(void *ctx, void *sta_ctx,
1488 const u8 *data, size_t datalen)
1489{
f88bd288 1490#ifndef CONFIG_NO_RADIUS
6fc6879b
JM		 1491 struct hostapd_data *hapd = ctx;
1492 struct sta_info *sta = sta_ctx;
1493
1494 ieee802_1x_encapsulate_radius(hapd, sta, data, datalen);
f88bd288 1495#endif /* CONFIG_NO_RADIUS */
6fc6879b
JM		 1496}
1497
1498
1499static void _ieee802_1x_finished(void *ctx, void *sta_ctx, int success,
1500 int preauth)
1501{
1502 struct hostapd_data *hapd = ctx;
1503 struct sta_info *sta = sta_ctx;
1504 if (preauth)
1505 rsn_preauth_finished(hapd, sta, success);
1506 else
1507 ieee802_1x_finished(hapd, sta, success);
1508}
1509
1510
1511static int ieee802_1x_get_eap_user(void *ctx, const u8 *identity,
1512 size_t identity_len, int phase2,
1513 struct eap_user *user)
1514{
1515 struct hostapd_data *hapd = ctx;
1516 const struct hostapd_eap_user *eap_user;
1517 int i, count;
1518
1519 eap_user = hostapd_get_eap_user(hapd->conf, identity,
1520 identity_len, phase2);
1521 if (eap_user == NULL)
1522 return -1;
1523
1524 os_memset(user, 0, sizeof(*user));
1525 user->phase2 = phase2;
1526 count = EAP_USER_MAX_METHODS;
1527 if (count > EAP_MAX_METHODS)
1528 count = EAP_MAX_METHODS;
1529 for (i = 0; i < count; i++) {
1530 user->methods[i].vendor = eap_user->methods[i].vendor;
1531 user->methods[i].method = eap_user->methods[i].method;
1532 }
1533
1534 if (eap_user->password) {
1535 user->password = os_malloc(eap_user->password_len);
1536 if (user->password == NULL)
1537 return -1;
1538 os_memcpy(user->password, eap_user->password,
1539 eap_user->password_len);
1540 user->password_len = eap_user->password_len;
1541 }
1542 user->force_version = eap_user->force_version;
1543 user->ttls_auth = eap_user->ttls_auth;
1544
1545 return 0;
1546}
1547
1548
1549static int ieee802_1x_sta_entry_alive(void *ctx, const u8 *addr)
1550{
1551 struct hostapd_data *hapd = ctx;
1552 struct sta_info *sta;
1553 sta = ap_get_sta(hapd, addr);
1554 if (sta == NULL || sta->eapol_sm == NULL)
1555 return 0;
1556 return 1;
1557}
1558
1559
1560static void ieee802_1x_logger(void *ctx, const u8 *addr,
1561 eapol_logger_level level, const char *txt)
1562{
71f04b3c 1563#ifndef CONFIG_NO_HOSTAPD_LOGGER
6fc6879b
JM		 1564 struct hostapd_data *hapd = ctx;
1565 int hlevel;
1566
1567 switch (level) {
1568 case EAPOL_LOGGER_WARNING:
1569 hlevel = HOSTAPD_LEVEL_WARNING;
1570 break;
1571 case EAPOL_LOGGER_INFO:
1572 hlevel = HOSTAPD_LEVEL_INFO;
1573 break;
1574 case EAPOL_LOGGER_DEBUG:
1575 default:
1576 hlevel = HOSTAPD_LEVEL_DEBUG;
1577 break;
1578 }
1579
1580 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE8021X, hlevel, "%s",
1581 txt);
71f04b3c 1582#endif /* CONFIG_NO_HOSTAPD_LOGGER */
6fc6879b
JM		 1583}
1584
1585
1586static void ieee802_1x_set_port_authorized(void *ctx, void *sta_ctx,
1587 int authorized)
1588{
1589 struct hostapd_data *hapd = ctx;
1590 struct sta_info *sta = sta_ctx;
1591 ieee802_1x_set_sta_authorized(hapd, sta, authorized);
1592}
1593
1594
1595static void _ieee802_1x_abort_auth(void *ctx, void *sta_ctx)
1596{
1597 struct hostapd_data *hapd = ctx;
1598 struct sta_info *sta = sta_ctx;
1599 ieee802_1x_abort_auth(hapd, sta);
1600}
1601
1602
1603static void _ieee802_1x_tx_key(void *ctx, void *sta_ctx)
1604{
1605 struct hostapd_data *hapd = ctx;
1606 struct sta_info *sta = sta_ctx;
1607 ieee802_1x_tx_key(hapd, sta);
1608}
1609
1610
38294200
JM		 1611static void ieee802_1x_eapol_event(void *ctx, void *sta_ctx,
1612 enum eapol_event type)
1613{
1614 /* struct hostapd_data *hapd = ctx; */
1615 struct sta_info *sta = sta_ctx;
1616 switch (type) {
1617 case EAPOL_AUTH_SM_CHANGE:
1618 wpa_auth_sm_notify(sta->wpa_sm);
1619 break;
1620 case EAPOL_AUTH_REAUTHENTICATE:
1621 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH_EAPOL);
1622 break;
1623 }
1624}
1625
1626
6fc6879b
JM		 1627int ieee802_1x_init(struct hostapd_data *hapd)
1628{
1629 int i;
1630 struct eapol_auth_config conf;
1631 struct eapol_auth_cb cb;
1632
1633 os_memset(&conf, 0, sizeof(conf));
a2befd37 1634 conf.ctx = hapd;
6fc6879b
JM		 1635 conf.eap_reauth_period = hapd->conf->eap_reauth_period;
1636 conf.wpa = hapd->conf->wpa;
1637 conf.individual_wep_key_len = hapd->conf->individual_wep_key_len;
1638 conf.eap_server = hapd->conf->eap_server;
1639 conf.ssl_ctx = hapd->ssl_ctx;
bb437f28 1640 conf.msg_ctx = hapd->msg_ctx;
6fc6879b
JM		 1641 conf.eap_sim_db_priv = hapd->eap_sim_db_priv;
1642 conf.eap_req_id_text = hapd->conf->eap_req_id_text;
1643 conf.eap_req_id_text_len = hapd->conf->eap_req_id_text_len;
1644 conf.pac_opaque_encr_key = hapd->conf->pac_opaque_encr_key;
1645 conf.eap_fast_a_id = hapd->conf->eap_fast_a_id;
2d867244
JM		 1646 conf.eap_fast_a_id_len = hapd->conf->eap_fast_a_id_len;
1647 conf.eap_fast_a_id_info = hapd->conf->eap_fast_a_id_info;
378eae5e 1648 conf.eap_fast_prov = hapd->conf->eap_fast_prov;
a11c90a6
JM		 1649 conf.pac_key_lifetime = hapd->conf->pac_key_lifetime;
1650 conf.pac_key_refresh_time = hapd->conf->pac_key_refresh_time;
6fc6879b 1651 conf.eap_sim_aka_result_ind = hapd->conf->eap_sim_aka_result_ind;
c3e258ae 1652 conf.tnc = hapd->conf->tnc;
ad08c363 1653 conf.wps = hapd->wps;
7f6ec672 1654 conf.fragment_size = hapd->conf->fragment_size;
df684d82 1655 conf.pwd_group = hapd->conf->pwd_group;
6fc6879b
JM		 1656
1657 os_memset(&cb, 0, sizeof(cb));
1658 cb.eapol_send = ieee802_1x_eapol_send;
1659 cb.aaa_send = ieee802_1x_aaa_send;
1660 cb.finished = _ieee802_1x_finished;
1661 cb.get_eap_user = ieee802_1x_get_eap_user;
1662 cb.sta_entry_alive = ieee802_1x_sta_entry_alive;
1663 cb.logger = ieee802_1x_logger;
1664 cb.set_port_authorized = ieee802_1x_set_port_authorized;
1665 cb.abort_auth = _ieee802_1x_abort_auth;
1666 cb.tx_key = _ieee802_1x_tx_key;
38294200 1667 cb.eapol_event = ieee802_1x_eapol_event;
6fc6879b
JM		 1668
1669 hapd->eapol_auth = eapol_auth_init(&conf, &cb);
1670 if (hapd->eapol_auth == NULL)
1671 return -1;
1672
1673 if ((hapd->conf->ieee802_1x || hapd->conf->wpa) &&
010401fe 1674 hapd->drv.set_drv_ieee8021x(hapd, hapd->conf->iface, 1))
6fc6879b
JM		 1675 return -1;
1676
f88bd288 1677#ifndef CONFIG_NO_RADIUS
6fc6879b
JM		 1678 if (radius_client_register(hapd->radius, RADIUS_AUTH,
1679 ieee802_1x_receive_auth, hapd))
1680 return -1;
f88bd288 1681#endif /* CONFIG_NO_RADIUS */
6fc6879b
JM		 1682
1683 if (hapd->conf->default_wep_key_len) {
6fc6879b 1684 for (i = 0; i < 4; i++)
45cefa0b
JM		 1685 hapd->drv.set_key(hapd->conf->iface, hapd,
1686 WPA_ALG_NONE, NULL, i, 0, NULL, 0,
1687 NULL, 0);
6fc6879b
JM		 1688
1689 ieee802_1x_rekey(hapd, NULL);
1690
f55802e8 1691 if (hapd->eapol_auth->default_wep_key == NULL)
6fc6879b
JM		 1692 return -1;
1693 }
1694
1695 return 0;
1696}
1697
1698
1699void ieee802_1x_deinit(struct hostapd_data *hapd)
1700{
1701 eloop_cancel_timeout(ieee802_1x_rekey, hapd, NULL);
1702
1703 if (hapd->driver != NULL &&
1704 (hapd->conf->ieee802_1x || hapd->conf->wpa))
010401fe 1705 hapd->drv.set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
6fc6879b
JM		 1706
1707 eapol_auth_deinit(hapd->eapol_auth);
1708 hapd->eapol_auth = NULL;
1709}
1710
1711
6fc6879b 1712int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
8607f4c3 1713 const u8 *buf, size_t len, int ack)
6fc6879b
JM		 1714{
1715 struct ieee80211_hdr *hdr;
1716 struct ieee802_1x_hdr *xhdr;
1717 struct ieee802_1x_eapol_key *key;
1718 u8 *pos;
1719 const unsigned char rfc1042_hdr[ETH_ALEN] =
1720 { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
1721
1722 if (sta == NULL)
1723 return -1;
1724 if (len < sizeof(*hdr) + sizeof(rfc1042_hdr) + 2 + sizeof(*xhdr))
1725 return 0;
1726
1727 hdr = (struct ieee80211_hdr *) buf;
1728 pos = (u8 *) (hdr + 1);
1729 if (os_memcmp(pos, rfc1042_hdr, sizeof(rfc1042_hdr)) != 0)
1730 return 0;
1731 pos += sizeof(rfc1042_hdr);
1732 if (WPA_GET_BE16(pos) != ETH_P_PAE)
1733 return 0;
1734 pos += 2;
1735
1736 xhdr = (struct ieee802_1x_hdr *) pos;
1737 pos += sizeof(*xhdr);
1738
1739 wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR " TX status - version=%d "
1740 "type=%d length=%d - ack=%d",
1741 MAC2STR(sta->addr), xhdr->version, xhdr->type,
1742 be_to_host16(xhdr->length), ack);
1743
1744 /* EAPOL EAP-Packet packets are eventually re-sent by either Supplicant
1745 * or Authenticator state machines, but EAPOL-Key packets are not
1746 * retransmitted in case of failure. Try to re-sent failed EAPOL-Key
1747 * packets couple of times because otherwise STA keys become
1748 * unsynchronized with AP. */
1749 if (xhdr->type == IEEE802_1X_TYPE_EAPOL_KEY && !ack &&
1750 pos + sizeof(*key) <= buf + len) {
1751 key = (struct ieee802_1x_eapol_key *) pos;
1752 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE8021X,
1753 HOSTAPD_LEVEL_DEBUG, "did not Ack EAPOL-Key "
1754 "frame (%scast index=%d)",
1755 key->key_index & BIT(7) ? "uni" : "broad",
1756 key->key_index & ~BIT(7));
1757 /* TODO: re-send EAPOL-Key couple of times (with short delay
1758 * between them?). If all attempt fail, report error and
1759 * deauthenticate STA so that it will get new keys when
1760 * authenticating again (e.g., after returning in range).
1761 * Separate limit/transmit state needed both for unicast and
1762 * broadcast keys(?) */
1763 }
1764 /* TODO: could move unicast key configuration from ieee802_1x_tx_key()
1765 * to here and change the key only if the EAPOL-Key packet was Acked.
1766 */
1767
1768 return 1;
1769}
1770
1771
1772u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len)
1773{
1774 if (sm == NULL || sm->identity == NULL)
1775 return NULL;
1776
1777 *len = sm->identity_len;
1778 return sm->identity;
1779}
1780
1781
1782u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len,
1783 int idx)
1784{
1785 if (sm == NULL || sm->radius_class.attr == NULL ||
1786 idx >= (int) sm->radius_class.count)
1787 return NULL;
1788
1789 *len = sm->radius_class.attr[idx].len;
1790 return sm->radius_class.attr[idx].data;
1791}
1792
1793
1794const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len)
1795{
1796 if (sm == NULL)
1797 return NULL;
1798
1799 *len = sm->eap_if->eapKeyDataLen;
1800 return sm->eap_if->eapKeyData;
1801}
1802
1803
1804void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm,
1805 int enabled)
1806{
1807 if (sm == NULL)
1808 return;
1809 sm->eap_if->portEnabled = enabled ? TRUE : FALSE;
1810 eapol_auth_step(sm);
1811}
1812
1813
1814void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm,
1815 int valid)
1816{
1817 if (sm == NULL)
1818 return;
1819 sm->portValid = valid ? TRUE : FALSE;
1820 eapol_auth_step(sm);
1821}
1822
1823
1824void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, int pre_auth)
1825{
1826 if (sm == NULL)
1827 return;
1828 if (pre_auth)
1829 sm->flags |= EAPOL_SM_PREAUTH;
1830 else
1831 sm->flags &= ~EAPOL_SM_PREAUTH;
1832}
1833
1834
1835static const char * bool_txt(Boolean bool)
1836{
1837 return bool ? "TRUE" : "FALSE";
1838}
1839
1840
1841int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
1842{
1843 /* TODO */
1844 return 0;
1845}
1846
1847
1848int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
1849 char *buf, size_t buflen)
1850{
1851 int len = 0, ret;
1852 struct eapol_state_machine *sm = sta->eapol_sm;
1853
1854 if (sm == NULL)
1855 return 0;
1856
1857 ret = os_snprintf(buf + len, buflen - len,
1858 "dot1xPaePortNumber=%d\n"
1859 "dot1xPaePortProtocolVersion=%d\n"
1860 "dot1xPaePortCapabilities=1\n"
1861 "dot1xPaePortInitialize=%d\n"
1862 "dot1xPaePortReauthenticate=FALSE\n",
1863 sta->aid,
1864 EAPOL_VERSION,
1865 sm->initialize);
1866 if (ret < 0 || (size_t) ret >= buflen - len)
1867 return len;
1868 len += ret;
1869
1870 /* dot1xAuthConfigTable */
1871 ret = os_snprintf(buf + len, buflen - len,
1872 "dot1xAuthPaeState=%d\n"
1873 "dot1xAuthBackendAuthState=%d\n"
1874 "dot1xAuthAdminControlledDirections=%d\n"
1875 "dot1xAuthOperControlledDirections=%d\n"
1876 "dot1xAuthAuthControlledPortStatus=%d\n"
1877 "dot1xAuthAuthControlledPortControl=%d\n"
1878 "dot1xAuthQuietPeriod=%u\n"
1879 "dot1xAuthServerTimeout=%u\n"
1880 "dot1xAuthReAuthPeriod=%u\n"
1881 "dot1xAuthReAuthEnabled=%s\n"
1882 "dot1xAuthKeyTxEnabled=%s\n",
1883 sm->auth_pae_state + 1,
1884 sm->be_auth_state + 1,
1885 sm->adminControlledDirections,
1886 sm->operControlledDirections,
1887 sm->authPortStatus,
1888 sm->portControl,
1889 sm->quietPeriod,
1890 sm->serverTimeout,
1891 sm->reAuthPeriod,
1892 bool_txt(sm->reAuthEnabled),
1893 bool_txt(sm->keyTxEnabled));
1894 if (ret < 0 || (size_t) ret >= buflen - len)
1895 return len;
1896 len += ret;
1897
1898 /* dot1xAuthStatsTable */
1899 ret = os_snprintf(buf + len, buflen - len,
1900 "dot1xAuthEapolFramesRx=%u\n"
1901 "dot1xAuthEapolFramesTx=%u\n"
1902 "dot1xAuthEapolStartFramesRx=%u\n"
1903 "dot1xAuthEapolLogoffFramesRx=%u\n"
1904 "dot1xAuthEapolRespIdFramesRx=%u\n"
1905 "dot1xAuthEapolRespFramesRx=%u\n"
1906 "dot1xAuthEapolReqIdFramesTx=%u\n"
1907 "dot1xAuthEapolReqFramesTx=%u\n"
1908 "dot1xAuthInvalidEapolFramesRx=%u\n"
1909 "dot1xAuthEapLengthErrorFramesRx=%u\n"
1910 "dot1xAuthLastEapolFrameVersion=%u\n"
1911 "dot1xAuthLastEapolFrameSource=" MACSTR "\n",
1912 sm->dot1xAuthEapolFramesRx,
1913 sm->dot1xAuthEapolFramesTx,
1914 sm->dot1xAuthEapolStartFramesRx,
1915 sm->dot1xAuthEapolLogoffFramesRx,
1916 sm->dot1xAuthEapolRespIdFramesRx,
1917 sm->dot1xAuthEapolRespFramesRx,
1918 sm->dot1xAuthEapolReqIdFramesTx,
1919 sm->dot1xAuthEapolReqFramesTx,
1920 sm->dot1xAuthInvalidEapolFramesRx,
1921 sm->dot1xAuthEapLengthErrorFramesRx,
1922 sm->dot1xAuthLastEapolFrameVersion,
1923 MAC2STR(sm->addr));
1924 if (ret < 0 || (size_t) ret >= buflen - len)
1925 return len;
1926 len += ret;
1927
1928 /* dot1xAuthDiagTable */
1929 ret = os_snprintf(buf + len, buflen - len,
1930 "dot1xAuthEntersConnecting=%u\n"
1931 "dot1xAuthEapLogoffsWhileConnecting=%u\n"
1932 "dot1xAuthEntersAuthenticating=%u\n"
1933 "dot1xAuthAuthSuccessesWhileAuthenticating=%u\n"
1934 "dot1xAuthAuthTimeoutsWhileAuthenticating=%u\n"
1935 "dot1xAuthAuthFailWhileAuthenticating=%u\n"
1936 "dot1xAuthAuthEapStartsWhileAuthenticating=%u\n"
1937 "dot1xAuthAuthEapLogoffWhileAuthenticating=%u\n"
1938 "dot1xAuthAuthReauthsWhileAuthenticated=%u\n"
1939 "dot1xAuthAuthEapStartsWhileAuthenticated=%u\n"
1940 "dot1xAuthAuthEapLogoffWhileAuthenticated=%u\n"
1941 "dot1xAuthBackendResponses=%u\n"
1942 "dot1xAuthBackendAccessChallenges=%u\n"
1943 "dot1xAuthBackendOtherRequestsToSupplicant=%u\n"
1944 "dot1xAuthBackendAuthSuccesses=%u\n"
1945 "dot1xAuthBackendAuthFails=%u\n",
1946 sm->authEntersConnecting,
1947 sm->authEapLogoffsWhileConnecting,
1948 sm->authEntersAuthenticating,
1949 sm->authAuthSuccessesWhileAuthenticating,
1950 sm->authAuthTimeoutsWhileAuthenticating,
1951 sm->authAuthFailWhileAuthenticating,
1952 sm->authAuthEapStartsWhileAuthenticating,
1953 sm->authAuthEapLogoffWhileAuthenticating,
1954 sm->authAuthReauthsWhileAuthenticated,
1955 sm->authAuthEapStartsWhileAuthenticated,
1956 sm->authAuthEapLogoffWhileAuthenticated,
1957 sm->backendResponses,
1958 sm->backendAccessChallenges,
1959 sm->backendOtherRequestsToSupplicant,
1960 sm->backendAuthSuccesses,
1961 sm->backendAuthFails);
1962 if (ret < 0 || (size_t) ret >= buflen - len)
1963 return len;
1964 len += ret;
1965
1966 /* dot1xAuthSessionStatsTable */
1967 ret = os_snprintf(buf + len, buflen - len,
1968 /* TODO: dot1xAuthSessionOctetsRx */
1969 /* TODO: dot1xAuthSessionOctetsTx */
1970 /* TODO: dot1xAuthSessionFramesRx */
1971 /* TODO: dot1xAuthSessionFramesTx */
1972 "dot1xAuthSessionId=%08X-%08X\n"
1973 "dot1xAuthSessionAuthenticMethod=%d\n"
1974 "dot1xAuthSessionTime=%u\n"
1975 "dot1xAuthSessionTerminateCause=999\n"
1976 "dot1xAuthSessionUserName=%s\n",
1977 sta->acct_session_id_hi, sta->acct_session_id_lo,
56586197
JM		 1978 (wpa_key_mgmt_wpa_ieee8021x(
1979 wpa_auth_sta_key_mgmt(sta->wpa_sm))) ?
1980 1 : 2,
6fc6879b
JM		 1981 (unsigned int) (time(NULL) -
1982 sta->acct_session_start),
1983 sm->identity);
1984 if (ret < 0 || (size_t) ret >= buflen - len)
1985 return len;
1986 len += ret;
1987
1988 return len;
1989}
1990
1991
1992static void ieee802_1x_finished(struct hostapd_data *hapd,
1993 struct sta_info *sta, int success)
1994{
1995 const u8 *key;
1996 size_t len;
1997 /* TODO: get PMKLifetime from WPA parameters */
1998 static const int dot11RSNAConfigPMKLifetime = 43200;
1999
2000 key = ieee802_1x_get_key(sta->eapol_sm, &len);
2001 if (success && key && len >= PMK_LEN &&
2002 wpa_auth_pmksa_add(sta->wpa_sm, key, dot11RSNAConfigPMKLifetime,
2003 sta->eapol_sm) == 0) {
2004 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
2005 HOSTAPD_LEVEL_DEBUG,
2006 "Added PMKSA cache entry (IEEE 802.1X)");
2007 }
32397063
JM		 2008
2009#ifdef CONFIG_WPS
2010 if (!success && (sta->flags & WLAN_STA_WPS)) {
2011 /*
2012 * Many devices require deauthentication after WPS provisioning
2013 * and some may not be be able to do that themselves, so
2014 * disconnect the client here.
2015 */
2016 wpa_printf(MSG_DEBUG, "WPS: Force disconnection after "
2017 "EAP-Failure");
2018 /* Add a small sleep to increase likelihood of previously
2019 * requested EAP-Failure TX getting out before this should the
2020 * driver reorder operations.
2021 */
2022 os_sleep(0, 10000);
2023 ap_sta_disconnect(hapd, sta, sta->addr,
2024 WLAN_REASON_PREV_AUTH_NOT_VALID);
2025 }
2026#endif /* CONFIG_WPS */
6fc6879b 2027}
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