1 /*
2 * hostapd / WPA authenticator glue code
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 "common/ieee802_11_defs.h"
13 #include "common/sae.h"
14 #include "common/wpa_ctrl.h"
15 #include "crypto/sha1.h"
16 #include "eapol_auth/eapol_auth_sm.h"
17 #include "eapol_auth/eapol_auth_sm_i.h"
18 #include "eap_server/eap.h"
19 #include "l2_packet/l2_packet.h"
20 #include "hostapd.h"
21 #include "ieee802_1x.h"
22 #include "preauth_auth.h"
23 #include "sta_info.h"
24 #include "tkip_countermeasures.h"
25 #include "ap_drv_ops.h"
26 #include "ap_config.h"
27 #include "wpa_auth.h"
28 #include "wpa_auth_glue.h"
29
30
hostapd_wpa_auth_conf(struct hostapd_bss_config * conf,struct hostapd_config * iconf,struct wpa_auth_config * wconf)31 static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf,
32 struct hostapd_config *iconf,
33 struct wpa_auth_config *wconf)
34 {
35 os_memset(wconf, 0, sizeof(*wconf));
36 wconf->wpa = conf->wpa;
37 wconf->wpa_key_mgmt = conf->wpa_key_mgmt;
38 wconf->wpa_pairwise = conf->wpa_pairwise;
39 wconf->wpa_group = conf->wpa_group;
40 wconf->wpa_group_rekey = conf->wpa_group_rekey;
41 wconf->wpa_strict_rekey = conf->wpa_strict_rekey;
42 wconf->wpa_gmk_rekey = conf->wpa_gmk_rekey;
43 wconf->wpa_ptk_rekey = conf->wpa_ptk_rekey;
44 wconf->wpa_group_update_count = conf->wpa_group_update_count;
45 wconf->wpa_pairwise_update_count = conf->wpa_pairwise_update_count;
46 wconf->rsn_pairwise = conf->rsn_pairwise;
47 wconf->rsn_preauth = conf->rsn_preauth;
48 wconf->eapol_version = conf->eapol_version;
49 wconf->peerkey = conf->peerkey;
50 wconf->wmm_enabled = conf->wmm_enabled;
51 wconf->wmm_uapsd = conf->wmm_uapsd;
52 wconf->disable_pmksa_caching = conf->disable_pmksa_caching;
53 wconf->okc = conf->okc;
54 #ifdef CONFIG_IEEE80211W
55 wconf->ieee80211w = conf->ieee80211w;
56 wconf->group_mgmt_cipher = conf->group_mgmt_cipher;
57 #endif /* CONFIG_IEEE80211W */
58 #ifdef CONFIG_IEEE80211R_AP
59 wconf->ssid_len = conf->ssid.ssid_len;
60 if (wconf->ssid_len > SSID_MAX_LEN)
61 wconf->ssid_len = SSID_MAX_LEN;
62 os_memcpy(wconf->ssid, conf->ssid.ssid, wconf->ssid_len);
63 os_memcpy(wconf->mobility_domain, conf->mobility_domain,
64 MOBILITY_DOMAIN_ID_LEN);
65 if (conf->nas_identifier &&
66 os_strlen(conf->nas_identifier) <= FT_R0KH_ID_MAX_LEN) {
67 wconf->r0_key_holder_len = os_strlen(conf->nas_identifier);
68 os_memcpy(wconf->r0_key_holder, conf->nas_identifier,
69 wconf->r0_key_holder_len);
70 }
71 os_memcpy(wconf->r1_key_holder, conf->r1_key_holder, FT_R1KH_ID_LEN);
72 wconf->r0_key_lifetime = conf->r0_key_lifetime;
73 wconf->reassociation_deadline = conf->reassociation_deadline;
74 wconf->r0kh_list = conf->r0kh_list;
75 wconf->r1kh_list = conf->r1kh_list;
76 wconf->pmk_r1_push = conf->pmk_r1_push;
77 wconf->ft_over_ds = conf->ft_over_ds;
78 wconf->ft_psk_generate_local = conf->ft_psk_generate_local;
79 #endif /* CONFIG_IEEE80211R_AP */
80 #ifdef CONFIG_HS20
81 wconf->disable_gtk = conf->disable_dgaf;
82 if (conf->osen) {
83 wconf->disable_gtk = 1;
84 wconf->wpa = WPA_PROTO_OSEN;
85 wconf->wpa_key_mgmt = WPA_KEY_MGMT_OSEN;
86 wconf->wpa_pairwise = 0;
87 wconf->wpa_group = WPA_CIPHER_CCMP;
88 wconf->rsn_pairwise = WPA_CIPHER_CCMP;
89 wconf->rsn_preauth = 0;
90 wconf->disable_pmksa_caching = 1;
91 #ifdef CONFIG_IEEE80211W
92 wconf->ieee80211w = 1;
93 #endif /* CONFIG_IEEE80211W */
94 }
95 #endif /* CONFIG_HS20 */
96 #ifdef CONFIG_TESTING_OPTIONS
97 wconf->corrupt_gtk_rekey_mic_probability =
98 iconf->corrupt_gtk_rekey_mic_probability;
99 if (conf->own_ie_override &&
100 wpabuf_len(conf->own_ie_override) <= MAX_OWN_IE_OVERRIDE) {
101 wconf->own_ie_override_len = wpabuf_len(conf->own_ie_override);
102 os_memcpy(wconf->own_ie_override,
103 wpabuf_head(conf->own_ie_override),
104 wconf->own_ie_override_len);
105 }
106 #endif /* CONFIG_TESTING_OPTIONS */
107 #ifdef CONFIG_P2P
108 os_memcpy(wconf->ip_addr_go, conf->ip_addr_go, 4);
109 os_memcpy(wconf->ip_addr_mask, conf->ip_addr_mask, 4);
110 os_memcpy(wconf->ip_addr_start, conf->ip_addr_start, 4);
111 os_memcpy(wconf->ip_addr_end, conf->ip_addr_end, 4);
112 #endif /* CONFIG_P2P */
113 }
114
115
hostapd_wpa_auth_logger(void * ctx,const u8 * addr,logger_level level,const char * txt)116 static void hostapd_wpa_auth_logger(void *ctx, const u8 *addr,
117 logger_level level, const char *txt)
118 {
119 #ifndef CONFIG_NO_HOSTAPD_LOGGER
120 struct hostapd_data *hapd = ctx;
121 int hlevel;
122
123 switch (level) {
124 case LOGGER_WARNING:
125 hlevel = HOSTAPD_LEVEL_WARNING;
126 break;
127 case LOGGER_INFO:
128 hlevel = HOSTAPD_LEVEL_INFO;
129 break;
130 case LOGGER_DEBUG:
131 default:
132 hlevel = HOSTAPD_LEVEL_DEBUG;
133 break;
134 }
135
136 hostapd_logger(hapd, addr, HOSTAPD_MODULE_WPA, hlevel, "%s", txt);
137 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
138 }
139
140
hostapd_wpa_auth_disconnect(void * ctx,const u8 * addr,u16 reason)141 static void hostapd_wpa_auth_disconnect(void *ctx, const u8 *addr,
142 u16 reason)
143 {
144 struct hostapd_data *hapd = ctx;
145 wpa_printf(MSG_DEBUG, "%s: WPA authenticator requests disconnect: "
146 "STA " MACSTR " reason %d",
147 __func__, MAC2STR(addr), reason);
148 ap_sta_disconnect(hapd, NULL, addr, reason);
149 }
150
151
hostapd_wpa_auth_mic_failure_report(void * ctx,const u8 * addr)152 static int hostapd_wpa_auth_mic_failure_report(void *ctx, const u8 *addr)
153 {
154 struct hostapd_data *hapd = ctx;
155 return michael_mic_failure(hapd, addr, 0);
156 }
157
158
hostapd_wpa_auth_psk_failure_report(void * ctx,const u8 * addr)159 static void hostapd_wpa_auth_psk_failure_report(void *ctx, const u8 *addr)
160 {
161 struct hostapd_data *hapd = ctx;
162 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_POSSIBLE_PSK_MISMATCH MACSTR,
163 MAC2STR(addr));
164 }
165
166
hostapd_wpa_auth_set_eapol(void * ctx,const u8 * addr,wpa_eapol_variable var,int value)167 static void hostapd_wpa_auth_set_eapol(void *ctx, const u8 *addr,
168 wpa_eapol_variable var, int value)
169 {
170 struct hostapd_data *hapd = ctx;
171 struct sta_info *sta = ap_get_sta(hapd, addr);
172 if (sta == NULL)
173 return;
174 switch (var) {
175 case WPA_EAPOL_portEnabled:
176 ieee802_1x_notify_port_enabled(sta->eapol_sm, value);
177 break;
178 case WPA_EAPOL_portValid:
179 ieee802_1x_notify_port_valid(sta->eapol_sm, value);
180 break;
181 case WPA_EAPOL_authorized:
182 ieee802_1x_set_sta_authorized(hapd, sta, value);
183 break;
184 case WPA_EAPOL_portControl_Auto:
185 if (sta->eapol_sm)
186 sta->eapol_sm->portControl = Auto;
187 break;
188 case WPA_EAPOL_keyRun:
189 if (sta->eapol_sm)
190 sta->eapol_sm->keyRun = value ? TRUE : FALSE;
191 break;
192 case WPA_EAPOL_keyAvailable:
193 if (sta->eapol_sm)
194 sta->eapol_sm->eap_if->eapKeyAvailable =
195 value ? TRUE : FALSE;
196 break;
197 case WPA_EAPOL_keyDone:
198 if (sta->eapol_sm)
199 sta->eapol_sm->keyDone = value ? TRUE : FALSE;
200 break;
201 case WPA_EAPOL_inc_EapolFramesTx:
202 if (sta->eapol_sm)
203 sta->eapol_sm->dot1xAuthEapolFramesTx++;
204 break;
205 }
206 }
207
208
hostapd_wpa_auth_get_eapol(void * ctx,const u8 * addr,wpa_eapol_variable var)209 static int hostapd_wpa_auth_get_eapol(void *ctx, const u8 *addr,
210 wpa_eapol_variable var)
211 {
212 struct hostapd_data *hapd = ctx;
213 struct sta_info *sta = ap_get_sta(hapd, addr);
214 if (sta == NULL || sta->eapol_sm == NULL)
215 return -1;
216 switch (var) {
217 case WPA_EAPOL_keyRun:
218 return sta->eapol_sm->keyRun;
219 case WPA_EAPOL_keyAvailable:
220 return sta->eapol_sm->eap_if->eapKeyAvailable;
221 default:
222 return -1;
223 }
224 }
225
226
hostapd_wpa_auth_get_psk(void * ctx,const u8 * addr,const u8 * p2p_dev_addr,const u8 * prev_psk)227 static const u8 * hostapd_wpa_auth_get_psk(void *ctx, const u8 *addr,
228 const u8 *p2p_dev_addr,
229 const u8 *prev_psk)
230 {
231 struct hostapd_data *hapd = ctx;
232 struct sta_info *sta = ap_get_sta(hapd, addr);
233 const u8 *psk;
234
235 #ifdef CONFIG_SAE
236 if (sta && sta->auth_alg == WLAN_AUTH_SAE) {
237 if (!sta->sae || prev_psk)
238 return NULL;
239 return sta->sae->pmk;
240 }
241 #endif /* CONFIG_SAE */
242
243 psk = hostapd_get_psk(hapd->conf, addr, p2p_dev_addr, prev_psk);
244 /*
245 * This is about to iterate over all psks, prev_psk gives the last
246 * returned psk which should not be returned again.
247 * logic list (all hostapd_get_psk; all sta->psk)
248 */
249 if (sta && sta->psk && !psk) {
250 struct hostapd_sta_wpa_psk_short *pos;
251 psk = sta->psk->psk;
252 for (pos = sta->psk; pos; pos = pos->next) {
253 if (pos->is_passphrase) {
254 pbkdf2_sha1(pos->passphrase,
255 hapd->conf->ssid.ssid,
256 hapd->conf->ssid.ssid_len, 4096,
257 pos->psk, PMK_LEN);
258 pos->is_passphrase = 0;
259 }
260 if (pos->psk == prev_psk) {
261 psk = pos->next ? pos->next->psk : NULL;
262 break;
263 }
264 }
265 }
266 return psk;
267 }
268
269
hostapd_wpa_auth_get_msk(void * ctx,const u8 * addr,u8 * msk,size_t * len)270 static int hostapd_wpa_auth_get_msk(void *ctx, const u8 *addr, u8 *msk,
271 size_t *len)
272 {
273 struct hostapd_data *hapd = ctx;
274 const u8 *key;
275 size_t keylen;
276 struct sta_info *sta;
277
278 sta = ap_get_sta(hapd, addr);
279 if (sta == NULL) {
280 wpa_printf(MSG_DEBUG, "AUTH_GET_MSK: Cannot find STA");
281 return -1;
282 }
283
284 key = ieee802_1x_get_key(sta->eapol_sm, &keylen);
285 if (key == NULL) {
286 wpa_printf(MSG_DEBUG, "AUTH_GET_MSK: Key is null, eapol_sm: %p",
287 sta->eapol_sm);
288 return -1;
289 }
290
291 if (keylen > *len)
292 keylen = *len;
293 os_memcpy(msk, key, keylen);
294 *len = keylen;
295
296 return 0;
297 }
298
299
hostapd_wpa_auth_set_key(void * ctx,int vlan_id,enum wpa_alg alg,const u8 * addr,int idx,u8 * key,size_t key_len)300 static int hostapd_wpa_auth_set_key(void *ctx, int vlan_id, enum wpa_alg alg,
301 const u8 *addr, int idx, u8 *key,
302 size_t key_len)
303 {
304 struct hostapd_data *hapd = ctx;
305 const char *ifname = hapd->conf->iface;
306
307 if (vlan_id > 0) {
308 ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
309 if (ifname == NULL)
310 return -1;
311 }
312
313 return hostapd_drv_set_key(ifname, hapd, alg, addr, idx, 1, NULL, 0,
314 key, key_len);
315 }
316
317
hostapd_wpa_auth_get_seqnum(void * ctx,const u8 * addr,int idx,u8 * seq)318 static int hostapd_wpa_auth_get_seqnum(void *ctx, const u8 *addr, int idx,
319 u8 *seq)
320 {
321 struct hostapd_data *hapd = ctx;
322 return hostapd_get_seqnum(hapd->conf->iface, hapd, addr, idx, seq);
323 }
324
325
hostapd_wpa_auth_send_eapol(void * ctx,const u8 * addr,const u8 * data,size_t data_len,int encrypt)326 static int hostapd_wpa_auth_send_eapol(void *ctx, const u8 *addr,
327 const u8 *data, size_t data_len,
328 int encrypt)
329 {
330 struct hostapd_data *hapd = ctx;
331 struct sta_info *sta;
332 u32 flags = 0;
333
334 #ifdef CONFIG_TESTING_OPTIONS
335 if (hapd->ext_eapol_frame_io) {
336 size_t hex_len = 2 * data_len + 1;
337 char *hex = os_malloc(hex_len);
338
339 if (hex == NULL)
340 return -1;
341 wpa_snprintf_hex(hex, hex_len, data, data_len);
342 wpa_msg(hapd->msg_ctx, MSG_INFO, "EAPOL-TX " MACSTR " %s",
343 MAC2STR(addr), hex);
344 os_free(hex);
345 return 0;
346 }
347 #endif /* CONFIG_TESTING_OPTIONS */
348
349 sta = ap_get_sta(hapd, addr);
350 if (sta)
351 flags = hostapd_sta_flags_to_drv(sta->flags);
352
353 return hostapd_drv_hapd_send_eapol(hapd, addr, data, data_len,
354 encrypt, flags);
355 }
356
357
hostapd_wpa_auth_for_each_sta(void * ctx,int (* cb)(struct wpa_state_machine * sm,void * ctx),void * cb_ctx)358 static int hostapd_wpa_auth_for_each_sta(
359 void *ctx, int (*cb)(struct wpa_state_machine *sm, void *ctx),
360 void *cb_ctx)
361 {
362 struct hostapd_data *hapd = ctx;
363 struct sta_info *sta;
364
365 for (sta = hapd->sta_list; sta; sta = sta->next) {
366 if (sta->wpa_sm && cb(sta->wpa_sm, cb_ctx))
367 return 1;
368 }
369 return 0;
370 }
371
372
373 struct wpa_auth_iface_iter_data {
374 int (*cb)(struct wpa_authenticator *sm, void *ctx);
375 void *cb_ctx;
376 };
377
wpa_auth_iface_iter(struct hostapd_iface * iface,void * ctx)378 static int wpa_auth_iface_iter(struct hostapd_iface *iface, void *ctx)
379 {
380 struct wpa_auth_iface_iter_data *data = ctx;
381 size_t i;
382 for (i = 0; i < iface->num_bss; i++) {
383 if (iface->bss[i]->wpa_auth &&
384 data->cb(iface->bss[i]->wpa_auth, data->cb_ctx))
385 return 1;
386 }
387 return 0;
388 }
389
390
hostapd_wpa_auth_for_each_auth(void * ctx,int (* cb)(struct wpa_authenticator * sm,void * ctx),void * cb_ctx)391 static int hostapd_wpa_auth_for_each_auth(
392 void *ctx, int (*cb)(struct wpa_authenticator *sm, void *ctx),
393 void *cb_ctx)
394 {
395 struct hostapd_data *hapd = ctx;
396 struct wpa_auth_iface_iter_data data;
397 if (hapd->iface->interfaces == NULL ||
398 hapd->iface->interfaces->for_each_interface == NULL)
399 return -1;
400 data.cb = cb;
401 data.cb_ctx = cb_ctx;
402 return hapd->iface->interfaces->for_each_interface(
403 hapd->iface->interfaces, wpa_auth_iface_iter, &data);
404 }
405
406
407 #ifdef CONFIG_IEEE80211R_AP
408
409 struct wpa_auth_ft_iface_iter_data {
410 struct hostapd_data *src_hapd;
411 const u8 *dst;
412 const u8 *data;
413 size_t data_len;
414 };
415
416
hostapd_wpa_auth_ft_iter(struct hostapd_iface * iface,void * ctx)417 static int hostapd_wpa_auth_ft_iter(struct hostapd_iface *iface, void *ctx)
418 {
419 struct wpa_auth_ft_iface_iter_data *idata = ctx;
420 struct hostapd_data *hapd;
421 size_t j;
422
423 for (j = 0; j < iface->num_bss; j++) {
424 hapd = iface->bss[j];
425 if (hapd == idata->src_hapd)
426 continue;
427 if (!hapd->wpa_auth)
428 continue;
429 if (os_memcmp(hapd->own_addr, idata->dst, ETH_ALEN) == 0) {
430 wpa_printf(MSG_DEBUG, "FT: Send RRB data directly to "
431 "locally managed BSS " MACSTR "@%s -> "
432 MACSTR "@%s",
433 MAC2STR(idata->src_hapd->own_addr),
434 idata->src_hapd->conf->iface,
435 MAC2STR(hapd->own_addr), hapd->conf->iface);
436 wpa_ft_rrb_rx(hapd->wpa_auth,
437 idata->src_hapd->own_addr,
438 idata->data, idata->data_len);
439 return 1;
440 }
441 }
442
443 return 0;
444 }
445
446 #endif /* CONFIG_IEEE80211R_AP */
447
448
hostapd_wpa_auth_send_ether(void * ctx,const u8 * dst,u16 proto,const u8 * data,size_t data_len)449 static int hostapd_wpa_auth_send_ether(void *ctx, const u8 *dst, u16 proto,
450 const u8 *data, size_t data_len)
451 {
452 struct hostapd_data *hapd = ctx;
453 struct l2_ethhdr *buf;
454 int ret;
455
456 #ifdef CONFIG_TESTING_OPTIONS
457 if (hapd->ext_eapol_frame_io && proto == ETH_P_EAPOL) {
458 size_t hex_len = 2 * data_len + 1;
459 char *hex = os_malloc(hex_len);
460
461 if (hex == NULL)
462 return -1;
463 wpa_snprintf_hex(hex, hex_len, data, data_len);
464 wpa_msg(hapd->msg_ctx, MSG_INFO, "EAPOL-TX " MACSTR " %s",
465 MAC2STR(dst), hex);
466 os_free(hex);
467 return 0;
468 }
469 #endif /* CONFIG_TESTING_OPTIONS */
470
471 #ifdef CONFIG_IEEE80211R_AP
472 if (proto == ETH_P_RRB && hapd->iface->interfaces &&
473 hapd->iface->interfaces->for_each_interface) {
474 int res;
475 struct wpa_auth_ft_iface_iter_data idata;
476 idata.src_hapd = hapd;
477 idata.dst = dst;
478 idata.data = data;
479 idata.data_len = data_len;
480 res = hapd->iface->interfaces->for_each_interface(
481 hapd->iface->interfaces, hostapd_wpa_auth_ft_iter,
482 &idata);
483 if (res == 1)
484 return data_len;
485 }
486 #endif /* CONFIG_IEEE80211R_AP */
487
488 if (hapd->driver && hapd->driver->send_ether)
489 return hapd->driver->send_ether(hapd->drv_priv, dst,
490 hapd->own_addr, proto,
491 data, data_len);
492 if (hapd->l2 == NULL)
493 return -1;
494
495 buf = os_malloc(sizeof(*buf) + data_len);
496 if (buf == NULL)
497 return -1;
498 os_memcpy(buf->h_dest, dst, ETH_ALEN);
499 os_memcpy(buf->h_source, hapd->own_addr, ETH_ALEN);
500 buf->h_proto = host_to_be16(proto);
501 os_memcpy(buf + 1, data, data_len);
502 ret = l2_packet_send(hapd->l2, dst, proto, (u8 *) buf,
503 sizeof(*buf) + data_len);
504 os_free(buf);
505 return ret;
506 }
507
508
509 #ifdef CONFIG_IEEE80211R_AP
510
hostapd_wpa_auth_send_ft_action(void * ctx,const u8 * dst,const u8 * data,size_t data_len)511 static int hostapd_wpa_auth_send_ft_action(void *ctx, const u8 *dst,
512 const u8 *data, size_t data_len)
513 {
514 struct hostapd_data *hapd = ctx;
515 int res;
516 struct ieee80211_mgmt *m;
517 size_t mlen;
518 struct sta_info *sta;
519
520 sta = ap_get_sta(hapd, dst);
521 if (sta == NULL || sta->wpa_sm == NULL)
522 return -1;
523
524 m = os_zalloc(sizeof(*m) + data_len);
525 if (m == NULL)
526 return -1;
527 mlen = ((u8 *) &m->u - (u8 *) m) + data_len;
528 m->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
529 WLAN_FC_STYPE_ACTION);
530 os_memcpy(m->da, dst, ETH_ALEN);
531 os_memcpy(m->sa, hapd->own_addr, ETH_ALEN);
532 os_memcpy(m->bssid, hapd->own_addr, ETH_ALEN);
533 os_memcpy(&m->u, data, data_len);
534
535 res = hostapd_drv_send_mlme(hapd, (u8 *) m, mlen, 0);
536 os_free(m);
537 return res;
538 }
539
540
541 static struct wpa_state_machine *
hostapd_wpa_auth_add_sta(void * ctx,const u8 * sta_addr)542 hostapd_wpa_auth_add_sta(void *ctx, const u8 *sta_addr)
543 {
544 struct hostapd_data *hapd = ctx;
545 struct sta_info *sta;
546
547 if (hostapd_add_sta_node(hapd, sta_addr, WLAN_AUTH_FT) < 0)
548 return NULL;
549
550 sta = ap_sta_add(hapd, sta_addr);
551 if (sta == NULL)
552 return NULL;
553 if (sta->wpa_sm) {
554 sta->auth_alg = WLAN_AUTH_FT;
555 return sta->wpa_sm;
556 }
557
558 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr, NULL);
559 if (sta->wpa_sm == NULL) {
560 ap_free_sta(hapd, sta);
561 return NULL;
562 }
563 sta->auth_alg = WLAN_AUTH_FT;
564
565 return sta->wpa_sm;
566 }
567
568
hostapd_rrb_receive(void * ctx,const u8 * src_addr,const u8 * buf,size_t len)569 static void hostapd_rrb_receive(void *ctx, const u8 *src_addr, const u8 *buf,
570 size_t len)
571 {
572 struct hostapd_data *hapd = ctx;
573 struct l2_ethhdr *ethhdr;
574 if (len < sizeof(*ethhdr))
575 return;
576 ethhdr = (struct l2_ethhdr *) buf;
577 wpa_printf(MSG_DEBUG, "FT: RRB received packet " MACSTR " -> "
578 MACSTR, MAC2STR(ethhdr->h_source), MAC2STR(ethhdr->h_dest));
579 if (!is_multicast_ether_addr(ethhdr->h_dest) &&
580 os_memcmp(hapd->own_addr, ethhdr->h_dest, ETH_ALEN) != 0)
581 return;
582 wpa_ft_rrb_rx(hapd->wpa_auth, ethhdr->h_source, buf + sizeof(*ethhdr),
583 len - sizeof(*ethhdr));
584 }
585
586
hostapd_wpa_auth_add_tspec(void * ctx,const u8 * sta_addr,u8 * tspec_ie,size_t tspec_ielen)587 static int hostapd_wpa_auth_add_tspec(void *ctx, const u8 *sta_addr,
588 u8 *tspec_ie, size_t tspec_ielen)
589 {
590 struct hostapd_data *hapd = ctx;
591 return hostapd_add_tspec(hapd, sta_addr, tspec_ie, tspec_ielen);
592 }
593
594 #endif /* CONFIG_IEEE80211R_AP */
595
596
hostapd_setup_wpa(struct hostapd_data * hapd)597 int hostapd_setup_wpa(struct hostapd_data *hapd)
598 {
599 struct wpa_auth_config _conf;
600 static const struct wpa_auth_callbacks cb = {
601 .logger = hostapd_wpa_auth_logger,
602 .disconnect = hostapd_wpa_auth_disconnect,
603 .mic_failure_report = hostapd_wpa_auth_mic_failure_report,
604 .psk_failure_report = hostapd_wpa_auth_psk_failure_report,
605 .set_eapol = hostapd_wpa_auth_set_eapol,
606 .get_eapol = hostapd_wpa_auth_get_eapol,
607 .get_psk = hostapd_wpa_auth_get_psk,
608 .get_msk = hostapd_wpa_auth_get_msk,
609 .set_key = hostapd_wpa_auth_set_key,
610 .get_seqnum = hostapd_wpa_auth_get_seqnum,
611 .send_eapol = hostapd_wpa_auth_send_eapol,
612 .for_each_sta = hostapd_wpa_auth_for_each_sta,
613 .for_each_auth = hostapd_wpa_auth_for_each_auth,
614 .send_ether = hostapd_wpa_auth_send_ether,
615 #ifdef CONFIG_IEEE80211R_AP
616 .send_ft_action = hostapd_wpa_auth_send_ft_action,
617 .add_sta = hostapd_wpa_auth_add_sta,
618 .add_tspec = hostapd_wpa_auth_add_tspec,
619 #endif /* CONFIG_IEEE80211R_AP */
620 };
621 const u8 *wpa_ie;
622 size_t wpa_ie_len;
623
624 hostapd_wpa_auth_conf(hapd->conf, hapd->iconf, &_conf);
625 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_EAPOL_TX_STATUS)
626 _conf.tx_status = 1;
627 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_MLME)
628 _conf.ap_mlme = 1;
629 hapd->wpa_auth = wpa_init(hapd->own_addr, &_conf, &cb, hapd);
630 if (hapd->wpa_auth == NULL) {
631 wpa_printf(MSG_ERROR, "WPA initialization failed.");
632 return -1;
633 }
634
635 if (hostapd_set_privacy(hapd, 1)) {
636 wpa_printf(MSG_ERROR, "Could not set PrivacyInvoked "
637 "for interface %s", hapd->conf->iface);
638 return -1;
639 }
640
641 wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
642 if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) {
643 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
644 "the kernel driver.");
645 return -1;
646 }
647
648 if (rsn_preauth_iface_init(hapd)) {
649 wpa_printf(MSG_ERROR, "Initialization of RSN "
650 "pre-authentication failed.");
651 return -1;
652 }
653
654 #ifdef CONFIG_IEEE80211R_AP
655 if (!hostapd_drv_none(hapd) &&
656 wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt)) {
657 hapd->l2 = l2_packet_init(hapd->conf->bridge[0] ?
658 hapd->conf->bridge :
659 hapd->conf->iface, NULL, ETH_P_RRB,
660 hostapd_rrb_receive, hapd, 1);
661 if (hapd->l2 == NULL &&
662 (hapd->driver == NULL ||
663 hapd->driver->send_ether == NULL)) {
664 wpa_printf(MSG_ERROR, "Failed to open l2_packet "
665 "interface");
666 return -1;
667 }
668 }
669 #endif /* CONFIG_IEEE80211R_AP */
670
671 return 0;
672
673 }
674
675
hostapd_reconfig_wpa(struct hostapd_data * hapd)676 void hostapd_reconfig_wpa(struct hostapd_data *hapd)
677 {
678 struct wpa_auth_config wpa_auth_conf;
679 hostapd_wpa_auth_conf(hapd->conf, hapd->iconf, &wpa_auth_conf);
680 wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
681 }
682
683
hostapd_deinit_wpa(struct hostapd_data * hapd)684 void hostapd_deinit_wpa(struct hostapd_data *hapd)
685 {
686 ieee80211_tkip_countermeasures_deinit(hapd);
687 rsn_preauth_iface_deinit(hapd);
688 if (hapd->wpa_auth) {
689 wpa_deinit(hapd->wpa_auth);
690 hapd->wpa_auth = NULL;
691
692 if (hapd->drv_priv && hostapd_set_privacy(hapd, 0)) {
693 wpa_printf(MSG_DEBUG, "Could not disable "
694 "PrivacyInvoked for interface %s",
695 hapd->conf->iface);
696 }
697
698 if (hapd->drv_priv &&
699 hostapd_set_generic_elem(hapd, (u8 *) "", 0)) {
700 wpa_printf(MSG_DEBUG, "Could not remove generic "
701 "information element from interface %s",
702 hapd->conf->iface);
703 }
704 }
705 ieee802_1x_deinit(hapd);
706
707 #ifdef CONFIG_IEEE80211R_AP
708 l2_packet_deinit(hapd->l2);
709 hapd->l2 = NULL;
710 #endif /* CONFIG_IEEE80211R_AP */
711 }
712