1 /*
2 * hostapd / IEEE 802.11 authentication (ACL)
3 * Copyright (c) 2003-2012, 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 * Access control list for IEEE 802.11 authentication can uses statically
9 * configured ACL from configuration files or an external RADIUS server.
10 * Results from external RADIUS queries are cached to allow faster
11 * authentication frame processing.
12 */
13
14 #include "utils/includes.h"
15
16 #include "utils/common.h"
17 #include "utils/eloop.h"
18 #include "radius/radius.h"
19 #include "radius/radius_client.h"
20 #include "hostapd.h"
21 #include "ap_config.h"
22 #include "ap_drv_ops.h"
23 #include "ieee802_11.h"
24 #include "ieee802_1x.h"
25 #include "ieee802_11_auth.h"
26
27 #define RADIUS_ACL_TIMEOUT 30
28
29
30 struct hostapd_cached_radius_acl {
31 struct os_reltime timestamp;
32 macaddr addr;
33 int accepted; /* HOSTAPD_ACL_* */
34 struct hostapd_cached_radius_acl *next;
35 u32 session_timeout;
36 u32 acct_interim_interval;
37 struct vlan_description vlan_id;
38 struct hostapd_sta_wpa_psk_short *psk;
39 char *identity;
40 char *radius_cui;
41 };
42
43
44 struct hostapd_acl_query_data {
45 struct os_reltime timestamp;
46 u8 radius_id;
47 macaddr addr;
48 u8 *auth_msg; /* IEEE 802.11 authentication frame from station */
49 size_t auth_msg_len;
50 struct hostapd_acl_query_data *next;
51 };
52
53
54 #ifndef CONFIG_NO_RADIUS
hostapd_acl_cache_free_entry(struct hostapd_cached_radius_acl * e)55 static void hostapd_acl_cache_free_entry(struct hostapd_cached_radius_acl *e)
56 {
57 os_free(e->identity);
58 os_free(e->radius_cui);
59 hostapd_free_psk_list(e->psk);
60 os_free(e);
61 }
62
63
hostapd_acl_cache_free(struct hostapd_cached_radius_acl * acl_cache)64 static void hostapd_acl_cache_free(struct hostapd_cached_radius_acl *acl_cache)
65 {
66 struct hostapd_cached_radius_acl *prev;
67
68 while (acl_cache) {
69 prev = acl_cache;
70 acl_cache = acl_cache->next;
71 hostapd_acl_cache_free_entry(prev);
72 }
73 }
74
75
copy_psk_list(struct hostapd_sta_wpa_psk_short ** psk,struct hostapd_sta_wpa_psk_short * src)76 static void copy_psk_list(struct hostapd_sta_wpa_psk_short **psk,
77 struct hostapd_sta_wpa_psk_short *src)
78 {
79 if (!psk)
80 return;
81
82 if (src)
83 src->ref++;
84
85 *psk = src;
86 }
87
88
hostapd_acl_cache_get(struct hostapd_data * hapd,const u8 * addr,u32 * session_timeout,u32 * acct_interim_interval,struct vlan_description * vlan_id,struct hostapd_sta_wpa_psk_short ** psk,char ** identity,char ** radius_cui)89 static int hostapd_acl_cache_get(struct hostapd_data *hapd, const u8 *addr,
90 u32 *session_timeout,
91 u32 *acct_interim_interval,
92 struct vlan_description *vlan_id,
93 struct hostapd_sta_wpa_psk_short **psk,
94 char **identity, char **radius_cui)
95 {
96 struct hostapd_cached_radius_acl *entry;
97 struct os_reltime now;
98
99 os_get_reltime(&now);
100
101 for (entry = hapd->acl_cache; entry; entry = entry->next) {
102 if (os_memcmp(entry->addr, addr, ETH_ALEN) != 0)
103 continue;
104
105 if (os_reltime_expired(&now, &entry->timestamp,
106 RADIUS_ACL_TIMEOUT))
107 return -1; /* entry has expired */
108 if (entry->accepted == HOSTAPD_ACL_ACCEPT_TIMEOUT)
109 if (session_timeout)
110 *session_timeout = entry->session_timeout;
111 if (acct_interim_interval)
112 *acct_interim_interval =
113 entry->acct_interim_interval;
114 if (vlan_id)
115 *vlan_id = entry->vlan_id;
116 copy_psk_list(psk, entry->psk);
117 if (identity) {
118 if (entry->identity)
119 *identity = os_strdup(entry->identity);
120 else
121 *identity = NULL;
122 }
123 if (radius_cui) {
124 if (entry->radius_cui)
125 *radius_cui = os_strdup(entry->radius_cui);
126 else
127 *radius_cui = NULL;
128 }
129 return entry->accepted;
130 }
131
132 return -1;
133 }
134 #endif /* CONFIG_NO_RADIUS */
135
136
hostapd_acl_query_free(struct hostapd_acl_query_data * query)137 static void hostapd_acl_query_free(struct hostapd_acl_query_data *query)
138 {
139 if (query == NULL)
140 return;
141 os_free(query->auth_msg);
142 os_free(query);
143 }
144
145
146 #ifndef CONFIG_NO_RADIUS
hostapd_radius_acl_query(struct hostapd_data * hapd,const u8 * addr,struct hostapd_acl_query_data * query)147 static int hostapd_radius_acl_query(struct hostapd_data *hapd, const u8 *addr,
148 struct hostapd_acl_query_data *query)
149 {
150 struct radius_msg *msg;
151 char buf[128];
152
153 query->radius_id = radius_client_get_id(hapd->radius);
154 msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST, query->radius_id);
155 if (msg == NULL)
156 return -1;
157
158 if (radius_msg_make_authenticator(msg) < 0) {
159 wpa_printf(MSG_INFO, "Could not make Request Authenticator");
160 goto fail;
161 }
162
163 os_snprintf(buf, sizeof(buf), RADIUS_ADDR_FORMAT, MAC2STR(addr));
164 if (!radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME, (u8 *) buf,
165 os_strlen(buf))) {
166 wpa_printf(MSG_DEBUG, "Could not add User-Name");
167 goto fail;
168 }
169
170 if (!radius_msg_add_attr_user_password(
171 msg, (u8 *) buf, os_strlen(buf),
172 hapd->conf->radius->auth_server->shared_secret,
173 hapd->conf->radius->auth_server->shared_secret_len)) {
174 wpa_printf(MSG_DEBUG, "Could not add User-Password");
175 goto fail;
176 }
177
178 if (add_common_radius_attr(hapd, hapd->conf->radius_auth_req_attr,
179 NULL, msg) < 0)
180 goto fail;
181
182 os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
183 MAC2STR(addr));
184 if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
185 (u8 *) buf, os_strlen(buf))) {
186 wpa_printf(MSG_DEBUG, "Could not add Calling-Station-Id");
187 goto fail;
188 }
189
190 os_snprintf(buf, sizeof(buf), "CONNECT 11Mbps 802.11b");
191 if (!radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
192 (u8 *) buf, os_strlen(buf))) {
193 wpa_printf(MSG_DEBUG, "Could not add Connect-Info");
194 goto fail;
195 }
196
197 if (radius_client_send(hapd->radius, msg, RADIUS_AUTH, addr) < 0)
198 goto fail;
199 return 0;
200
201 fail:
202 radius_msg_free(msg);
203 return -1;
204 }
205 #endif /* CONFIG_NO_RADIUS */
206
207
208 /**
209 * hostapd_check_acl - Check a specified STA against accept/deny ACLs
210 * @hapd: hostapd BSS data
211 * @addr: MAC address of the STA
212 * @vlan_id: Buffer for returning VLAN ID
213 * Returns: HOSTAPD_ACL_ACCEPT, HOSTAPD_ACL_REJECT, or HOSTAPD_ACL_PENDING
214 */
hostapd_check_acl(struct hostapd_data * hapd,const u8 * addr,struct vlan_description * vlan_id)215 int hostapd_check_acl(struct hostapd_data *hapd, const u8 *addr,
216 struct vlan_description *vlan_id)
217 {
218 if (hostapd_maclist_found(hapd->conf->accept_mac,
219 hapd->conf->num_accept_mac, addr, vlan_id))
220 return HOSTAPD_ACL_ACCEPT;
221
222 if (hostapd_maclist_found(hapd->conf->deny_mac,
223 hapd->conf->num_deny_mac, addr, vlan_id))
224 return HOSTAPD_ACL_REJECT;
225
226 if (hapd->conf->macaddr_acl == ACCEPT_UNLESS_DENIED)
227 return HOSTAPD_ACL_ACCEPT;
228 if (hapd->conf->macaddr_acl == DENY_UNLESS_ACCEPTED)
229 return HOSTAPD_ACL_REJECT;
230
231 return HOSTAPD_ACL_PENDING;
232 }
233
234
235 /**
236 * hostapd_allowed_address - Check whether a specified STA can be authenticated
237 * @hapd: hostapd BSS data
238 * @addr: MAC address of the STA
239 * @msg: Authentication message
240 * @len: Length of msg in octets
241 * @session_timeout: Buffer for returning session timeout (from RADIUS)
242 * @acct_interim_interval: Buffer for returning account interval (from RADIUS)
243 * @vlan_id: Buffer for returning VLAN ID
244 * @psk: Linked list buffer for returning WPA PSK
245 * @identity: Buffer for returning identity (from RADIUS)
246 * @radius_cui: Buffer for returning CUI (from RADIUS)
247 * Returns: HOSTAPD_ACL_ACCEPT, HOSTAPD_ACL_REJECT, or HOSTAPD_ACL_PENDING
248 *
249 * The caller is responsible for freeing the returned *identity and *radius_cui
250 * values with os_free().
251 */
hostapd_allowed_address(struct hostapd_data * hapd,const u8 * addr,const u8 * msg,size_t len,u32 * session_timeout,u32 * acct_interim_interval,struct vlan_description * vlan_id,struct hostapd_sta_wpa_psk_short ** psk,char ** identity,char ** radius_cui)252 int hostapd_allowed_address(struct hostapd_data *hapd, const u8 *addr,
253 const u8 *msg, size_t len, u32 *session_timeout,
254 u32 *acct_interim_interval,
255 struct vlan_description *vlan_id,
256 struct hostapd_sta_wpa_psk_short **psk,
257 char **identity, char **radius_cui)
258 {
259 int res;
260
261 if (session_timeout)
262 *session_timeout = 0;
263 if (acct_interim_interval)
264 *acct_interim_interval = 0;
265 if (vlan_id)
266 os_memset(vlan_id, 0, sizeof(*vlan_id));
267 if (psk)
268 *psk = NULL;
269 if (identity)
270 *identity = NULL;
271 if (radius_cui)
272 *radius_cui = NULL;
273
274 res = hostapd_check_acl(hapd, addr, vlan_id);
275 if (res != HOSTAPD_ACL_PENDING)
276 return res;
277
278 if (hapd->conf->macaddr_acl == USE_EXTERNAL_RADIUS_AUTH) {
279 #ifdef CONFIG_NO_RADIUS
280 return HOSTAPD_ACL_REJECT;
281 #else /* CONFIG_NO_RADIUS */
282 struct hostapd_acl_query_data *query;
283
284 /* Check whether ACL cache has an entry for this station */
285 res = hostapd_acl_cache_get(hapd, addr, session_timeout,
286 acct_interim_interval, vlan_id, psk,
287 identity, radius_cui);
288 if (res == HOSTAPD_ACL_ACCEPT ||
289 res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
290 return res;
291 if (res == HOSTAPD_ACL_REJECT)
292 return HOSTAPD_ACL_REJECT;
293
294 query = hapd->acl_queries;
295 while (query) {
296 if (os_memcmp(query->addr, addr, ETH_ALEN) == 0) {
297 /* pending query in RADIUS retransmit queue;
298 * do not generate a new one */
299 if (identity) {
300 os_free(*identity);
301 *identity = NULL;
302 }
303 if (radius_cui) {
304 os_free(*radius_cui);
305 *radius_cui = NULL;
306 }
307 return HOSTAPD_ACL_PENDING;
308 }
309 query = query->next;
310 }
311
312 if (!hapd->conf->radius->auth_server)
313 return HOSTAPD_ACL_REJECT;
314
315 /* No entry in the cache - query external RADIUS server */
316 query = os_zalloc(sizeof(*query));
317 if (query == NULL) {
318 wpa_printf(MSG_ERROR, "malloc for query data failed");
319 return HOSTAPD_ACL_REJECT;
320 }
321 os_get_reltime(&query->timestamp);
322 os_memcpy(query->addr, addr, ETH_ALEN);
323 if (hostapd_radius_acl_query(hapd, addr, query)) {
324 wpa_printf(MSG_DEBUG, "Failed to send Access-Request "
325 "for ACL query.");
326 hostapd_acl_query_free(query);
327 return HOSTAPD_ACL_REJECT;
328 }
329
330 query->auth_msg = os_memdup(msg, len);
331 if (query->auth_msg == NULL) {
332 wpa_printf(MSG_ERROR, "Failed to allocate memory for "
333 "auth frame.");
334 hostapd_acl_query_free(query);
335 return HOSTAPD_ACL_REJECT;
336 }
337 query->auth_msg_len = len;
338 query->next = hapd->acl_queries;
339 hapd->acl_queries = query;
340
341 /* Queued data will be processed in hostapd_acl_recv_radius()
342 * when RADIUS server replies to the sent Access-Request. */
343 return HOSTAPD_ACL_PENDING;
344 #endif /* CONFIG_NO_RADIUS */
345 }
346
347 return HOSTAPD_ACL_REJECT;
348 }
349
350
351 #ifndef CONFIG_NO_RADIUS
hostapd_acl_expire_cache(struct hostapd_data * hapd,struct os_reltime * now)352 static void hostapd_acl_expire_cache(struct hostapd_data *hapd,
353 struct os_reltime *now)
354 {
355 struct hostapd_cached_radius_acl *prev, *entry, *tmp;
356
357 prev = NULL;
358 entry = hapd->acl_cache;
359
360 while (entry) {
361 if (os_reltime_expired(now, &entry->timestamp,
362 RADIUS_ACL_TIMEOUT)) {
363 wpa_printf(MSG_DEBUG, "Cached ACL entry for " MACSTR
364 " has expired.", MAC2STR(entry->addr));
365 if (prev)
366 prev->next = entry->next;
367 else
368 hapd->acl_cache = entry->next;
369 hostapd_drv_set_radius_acl_expire(hapd, entry->addr);
370 tmp = entry;
371 entry = entry->next;
372 hostapd_acl_cache_free_entry(tmp);
373 continue;
374 }
375
376 prev = entry;
377 entry = entry->next;
378 }
379 }
380
381
hostapd_acl_expire_queries(struct hostapd_data * hapd,struct os_reltime * now)382 static void hostapd_acl_expire_queries(struct hostapd_data *hapd,
383 struct os_reltime *now)
384 {
385 struct hostapd_acl_query_data *prev, *entry, *tmp;
386
387 prev = NULL;
388 entry = hapd->acl_queries;
389
390 while (entry) {
391 if (os_reltime_expired(now, &entry->timestamp,
392 RADIUS_ACL_TIMEOUT)) {
393 wpa_printf(MSG_DEBUG, "ACL query for " MACSTR
394 " has expired.", MAC2STR(entry->addr));
395 if (prev)
396 prev->next = entry->next;
397 else
398 hapd->acl_queries = entry->next;
399
400 tmp = entry;
401 entry = entry->next;
402 hostapd_acl_query_free(tmp);
403 continue;
404 }
405
406 prev = entry;
407 entry = entry->next;
408 }
409 }
410
411
412 /**
413 * hostapd_acl_expire - ACL cache expiration callback
414 * @hapd: struct hostapd_data *
415 */
hostapd_acl_expire(struct hostapd_data * hapd)416 void hostapd_acl_expire(struct hostapd_data *hapd)
417 {
418 struct os_reltime now;
419
420 os_get_reltime(&now);
421 hostapd_acl_expire_cache(hapd, &now);
422 hostapd_acl_expire_queries(hapd, &now);
423 }
424
425
decode_tunnel_passwords(struct hostapd_data * hapd,const u8 * shared_secret,size_t shared_secret_len,struct radius_msg * msg,struct radius_msg * req,struct hostapd_cached_radius_acl * cache)426 static void decode_tunnel_passwords(struct hostapd_data *hapd,
427 const u8 *shared_secret,
428 size_t shared_secret_len,
429 struct radius_msg *msg,
430 struct radius_msg *req,
431 struct hostapd_cached_radius_acl *cache)
432 {
433 int passphraselen;
434 char *passphrase;
435 size_t i;
436 struct hostapd_sta_wpa_psk_short *psk;
437
438 /*
439 * Decode all tunnel passwords as PSK and save them into a linked list.
440 */
441 for (i = 0; ; i++) {
442 passphrase = radius_msg_get_tunnel_password(
443 msg, &passphraselen, shared_secret, shared_secret_len,
444 req, i);
445 /*
446 * Passphrase is NULL iff there is no i-th Tunnel-Password
447 * attribute in msg.
448 */
449 if (passphrase == NULL)
450 break;
451
452 /*
453 * Passphase should be 8..63 chars (to be hashed with SSID)
454 * or 64 chars hex string (no separate hashing with SSID).
455 */
456
457 if (passphraselen < MIN_PASSPHRASE_LEN ||
458 passphraselen > MAX_PASSPHRASE_LEN + 1)
459 goto free_pass;
460
461 /*
462 * passphrase does not contain the NULL termination.
463 * Add it here as pbkdf2_sha1() requires it.
464 */
465 psk = os_zalloc(sizeof(struct hostapd_sta_wpa_psk_short));
466 if (psk) {
467 if ((passphraselen == MAX_PASSPHRASE_LEN + 1) &&
468 (hexstr2bin(passphrase, psk->psk, PMK_LEN) < 0)) {
469 hostapd_logger(hapd, cache->addr,
470 HOSTAPD_MODULE_RADIUS,
471 HOSTAPD_LEVEL_WARNING,
472 "invalid hex string (%d chars) in Tunnel-Password",
473 passphraselen);
474 goto skip;
475 } else if (passphraselen <= MAX_PASSPHRASE_LEN) {
476 os_memcpy(psk->passphrase, passphrase,
477 passphraselen);
478 psk->is_passphrase = 1;
479 }
480 psk->next = cache->psk;
481 cache->psk = psk;
482 psk = NULL;
483 }
484 skip:
485 os_free(psk);
486 free_pass:
487 os_free(passphrase);
488 }
489 }
490
491
492 /**
493 * hostapd_acl_recv_radius - Process incoming RADIUS Authentication messages
494 * @msg: RADIUS response message
495 * @req: RADIUS request message
496 * @shared_secret: RADIUS shared secret
497 * @shared_secret_len: Length of shared_secret in octets
498 * @data: Context data (struct hostapd_data *)
499 * Returns: RADIUS_RX_PROCESSED if RADIUS message was a reply to ACL query (and
500 * was processed here) or RADIUS_RX_UNKNOWN if not.
501 */
502 static RadiusRxResult
hostapd_acl_recv_radius(struct radius_msg * msg,struct radius_msg * req,const u8 * shared_secret,size_t shared_secret_len,void * data)503 hostapd_acl_recv_radius(struct radius_msg *msg, struct radius_msg *req,
504 const u8 *shared_secret, size_t shared_secret_len,
505 void *data)
506 {
507 struct hostapd_data *hapd = data;
508 struct hostapd_acl_query_data *query, *prev;
509 struct hostapd_cached_radius_acl *cache;
510 struct radius_hdr *hdr = radius_msg_get_hdr(msg);
511 int *untagged, *tagged, *notempty;
512
513 query = hapd->acl_queries;
514 prev = NULL;
515 while (query) {
516 if (query->radius_id == hdr->identifier)
517 break;
518 prev = query;
519 query = query->next;
520 }
521 if (query == NULL)
522 return RADIUS_RX_UNKNOWN;
523
524 wpa_printf(MSG_DEBUG, "Found matching Access-Request for RADIUS "
525 "message (id=%d)", query->radius_id);
526
527 if (radius_msg_verify(msg, shared_secret, shared_secret_len, req, 0)) {
528 wpa_printf(MSG_INFO, "Incoming RADIUS packet did not have "
529 "correct authenticator - dropped\n");
530 return RADIUS_RX_INVALID_AUTHENTICATOR;
531 }
532
533 if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
534 hdr->code != RADIUS_CODE_ACCESS_REJECT) {
535 wpa_printf(MSG_DEBUG, "Unknown RADIUS message code %d to ACL "
536 "query", hdr->code);
537 return RADIUS_RX_UNKNOWN;
538 }
539
540 /* Insert Accept/Reject info into ACL cache */
541 cache = os_zalloc(sizeof(*cache));
542 if (cache == NULL) {
543 wpa_printf(MSG_DEBUG, "Failed to add ACL cache entry");
544 goto done;
545 }
546 os_get_reltime(&cache->timestamp);
547 os_memcpy(cache->addr, query->addr, sizeof(cache->addr));
548 if (hdr->code == RADIUS_CODE_ACCESS_ACCEPT) {
549 u8 *buf;
550 size_t len;
551
552 if (radius_msg_get_attr_int32(msg, RADIUS_ATTR_SESSION_TIMEOUT,
553 &cache->session_timeout) == 0)
554 cache->accepted = HOSTAPD_ACL_ACCEPT_TIMEOUT;
555 else
556 cache->accepted = HOSTAPD_ACL_ACCEPT;
557
558 if (radius_msg_get_attr_int32(
559 msg, RADIUS_ATTR_ACCT_INTERIM_INTERVAL,
560 &cache->acct_interim_interval) == 0 &&
561 cache->acct_interim_interval < 60) {
562 wpa_printf(MSG_DEBUG, "Ignored too small "
563 "Acct-Interim-Interval %d for STA " MACSTR,
564 cache->acct_interim_interval,
565 MAC2STR(query->addr));
566 cache->acct_interim_interval = 0;
567 }
568
569 notempty = &cache->vlan_id.notempty;
570 untagged = &cache->vlan_id.untagged;
571 tagged = cache->vlan_id.tagged;
572 *notempty = !!radius_msg_get_vlanid(msg, untagged,
573 MAX_NUM_TAGGED_VLAN,
574 tagged);
575
576 decode_tunnel_passwords(hapd, shared_secret, shared_secret_len,
577 msg, req, cache);
578
579 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME,
580 &buf, &len, NULL) == 0) {
581 cache->identity = os_zalloc(len + 1);
582 if (cache->identity)
583 os_memcpy(cache->identity, buf, len);
584 }
585 if (radius_msg_get_attr_ptr(
586 msg, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
587 &buf, &len, NULL) == 0) {
588 cache->radius_cui = os_zalloc(len + 1);
589 if (cache->radius_cui)
590 os_memcpy(cache->radius_cui, buf, len);
591 }
592
593 if (hapd->conf->wpa_psk_radius == PSK_RADIUS_REQUIRED &&
594 !cache->psk)
595 cache->accepted = HOSTAPD_ACL_REJECT;
596
597 if (cache->vlan_id.notempty &&
598 !hostapd_vlan_valid(hapd->conf->vlan, &cache->vlan_id)) {
599 hostapd_logger(hapd, query->addr,
600 HOSTAPD_MODULE_RADIUS,
601 HOSTAPD_LEVEL_INFO,
602 "Invalid VLAN %d%s received from RADIUS server",
603 cache->vlan_id.untagged,
604 cache->vlan_id.tagged[0] ? "+" : "");
605 os_memset(&cache->vlan_id, 0, sizeof(cache->vlan_id));
606 }
607 if (hapd->conf->ssid.dynamic_vlan == DYNAMIC_VLAN_REQUIRED &&
608 !cache->vlan_id.notempty)
609 cache->accepted = HOSTAPD_ACL_REJECT;
610 } else
611 cache->accepted = HOSTAPD_ACL_REJECT;
612 cache->next = hapd->acl_cache;
613 hapd->acl_cache = cache;
614
615 #ifdef CONFIG_DRIVER_RADIUS_ACL
616 hostapd_drv_set_radius_acl_auth(hapd, query->addr, cache->accepted,
617 cache->session_timeout);
618 #else /* CONFIG_DRIVER_RADIUS_ACL */
619 #ifdef NEED_AP_MLME
620 /* Re-send original authentication frame for 802.11 processing */
621 wpa_printf(MSG_DEBUG, "Re-sending authentication frame after "
622 "successful RADIUS ACL query");
623 ieee802_11_mgmt(hapd, query->auth_msg, query->auth_msg_len, NULL);
624 #endif /* NEED_AP_MLME */
625 #endif /* CONFIG_DRIVER_RADIUS_ACL */
626
627 done:
628 if (prev == NULL)
629 hapd->acl_queries = query->next;
630 else
631 prev->next = query->next;
632
633 hostapd_acl_query_free(query);
634
635 return RADIUS_RX_PROCESSED;
636 }
637 #endif /* CONFIG_NO_RADIUS */
638
639
640 /**
641 * hostapd_acl_init: Initialize IEEE 802.11 ACL
642 * @hapd: hostapd BSS data
643 * Returns: 0 on success, -1 on failure
644 */
hostapd_acl_init(struct hostapd_data * hapd)645 int hostapd_acl_init(struct hostapd_data *hapd)
646 {
647 #ifndef CONFIG_NO_RADIUS
648 if (radius_client_register(hapd->radius, RADIUS_AUTH,
649 hostapd_acl_recv_radius, hapd))
650 return -1;
651 #endif /* CONFIG_NO_RADIUS */
652
653 return 0;
654 }
655
656
657 /**
658 * hostapd_acl_deinit - Deinitialize IEEE 802.11 ACL
659 * @hapd: hostapd BSS data
660 */
hostapd_acl_deinit(struct hostapd_data * hapd)661 void hostapd_acl_deinit(struct hostapd_data *hapd)
662 {
663 struct hostapd_acl_query_data *query, *prev;
664
665 #ifndef CONFIG_NO_RADIUS
666 hostapd_acl_cache_free(hapd->acl_cache);
667 hapd->acl_cache = NULL;
668 #endif /* CONFIG_NO_RADIUS */
669
670 query = hapd->acl_queries;
671 hapd->acl_queries = NULL;
672 while (query) {
673 prev = query;
674 query = query->next;
675 hostapd_acl_query_free(prev);
676 }
677 }
678
679
hostapd_free_psk_list(struct hostapd_sta_wpa_psk_short * psk)680 void hostapd_free_psk_list(struct hostapd_sta_wpa_psk_short *psk)
681 {
682 if (psk && psk->ref) {
683 /* This will be freed when the last reference is dropped. */
684 psk->ref--;
685 return;
686 }
687
688 while (psk) {
689 struct hostapd_sta_wpa_psk_short *prev = psk;
690 psk = psk->next;
691 os_free(prev);
692 }
693 }
694