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 "utils/eloop.h"
13 #include "utils/list.h"
14 #include "common/ieee802_11_defs.h"
15 #include "common/sae.h"
16 #include "common/wpa_ctrl.h"
17 #include "crypto/sha1.h"
18 #include "eapol_auth/eapol_auth_sm.h"
19 #include "eapol_auth/eapol_auth_sm_i.h"
20 #include "eap_server/eap.h"
21 #include "l2_packet/l2_packet.h"
22 #include "eth_p_oui.h"
23 #include "hostapd.h"
24 #include "ieee802_1x.h"
25 #include "preauth_auth.h"
26 #include "sta_info.h"
27 #include "tkip_countermeasures.h"
28 #include "ap_drv_ops.h"
29 #include "ap_config.h"
30 #include "ieee802_11.h"
31 #include "pmksa_cache_auth.h"
32 #include "wpa_auth.h"
33 #include "wpa_auth_glue.h"
34
35
hostapd_wpa_auth_conf(struct hostapd_bss_config * conf,struct hostapd_config * iconf,struct wpa_auth_config * wconf)36 static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf,
37 struct hostapd_config *iconf,
38 struct wpa_auth_config *wconf)
39 {
40 int sae_pw_id;
41
42 os_memset(wconf, 0, sizeof(*wconf));
43 wconf->wpa = conf->wpa;
44 wconf->extended_key_id = conf->extended_key_id;
45 wconf->wpa_key_mgmt = conf->wpa_key_mgmt;
46 wconf->wpa_pairwise = conf->wpa_pairwise;
47 wconf->wpa_group = conf->wpa_group;
48 wconf->wpa_group_rekey = conf->wpa_group_rekey;
49 wconf->wpa_strict_rekey = conf->wpa_strict_rekey;
50 wconf->wpa_gmk_rekey = conf->wpa_gmk_rekey;
51 wconf->wpa_ptk_rekey = conf->wpa_ptk_rekey;
52 wconf->wpa_group_update_count = conf->wpa_group_update_count;
53 wconf->wpa_disable_eapol_key_retries =
54 conf->wpa_disable_eapol_key_retries;
55 wconf->wpa_pairwise_update_count = conf->wpa_pairwise_update_count;
56 wconf->rsn_pairwise = conf->rsn_pairwise;
57 wconf->rsn_preauth = conf->rsn_preauth;
58 wconf->eapol_version = conf->eapol_version;
59 #ifdef CONFIG_MACSEC
60 if (wconf->eapol_version > 2)
61 wconf->eapol_version = 2;
62 #endif /* CONFIG_MACSEC */
63 wconf->wmm_enabled = conf->wmm_enabled;
64 wconf->wmm_uapsd = conf->wmm_uapsd;
65 wconf->disable_pmksa_caching = conf->disable_pmksa_caching;
66 #ifdef CONFIG_OCV
67 wconf->ocv = conf->ocv;
68 #endif /* CONFIG_OCV */
69 wconf->okc = conf->okc;
70 wconf->ieee80211w = conf->ieee80211w;
71 wconf->beacon_prot = conf->beacon_prot;
72 wconf->group_mgmt_cipher = conf->group_mgmt_cipher;
73 wconf->sae_require_mfp = conf->sae_require_mfp;
74 #ifdef CONFIG_IEEE80211R_AP
75 wconf->ssid_len = conf->ssid.ssid_len;
76 if (wconf->ssid_len > SSID_MAX_LEN)
77 wconf->ssid_len = SSID_MAX_LEN;
78 os_memcpy(wconf->ssid, conf->ssid.ssid, wconf->ssid_len);
79 os_memcpy(wconf->mobility_domain, conf->mobility_domain,
80 MOBILITY_DOMAIN_ID_LEN);
81 if (conf->nas_identifier &&
82 os_strlen(conf->nas_identifier) <= FT_R0KH_ID_MAX_LEN) {
83 wconf->r0_key_holder_len = os_strlen(conf->nas_identifier);
84 os_memcpy(wconf->r0_key_holder, conf->nas_identifier,
85 wconf->r0_key_holder_len);
86 }
87 os_memcpy(wconf->r1_key_holder, conf->r1_key_holder, FT_R1KH_ID_LEN);
88 wconf->r0_key_lifetime = conf->r0_key_lifetime;
89 wconf->r1_max_key_lifetime = conf->r1_max_key_lifetime;
90 wconf->reassociation_deadline = conf->reassociation_deadline;
91 wconf->rkh_pos_timeout = conf->rkh_pos_timeout;
92 wconf->rkh_neg_timeout = conf->rkh_neg_timeout;
93 wconf->rkh_pull_timeout = conf->rkh_pull_timeout;
94 wconf->rkh_pull_retries = conf->rkh_pull_retries;
95 wconf->r0kh_list = &conf->r0kh_list;
96 wconf->r1kh_list = &conf->r1kh_list;
97 wconf->pmk_r1_push = conf->pmk_r1_push;
98 wconf->ft_over_ds = conf->ft_over_ds;
99 wconf->ft_psk_generate_local = conf->ft_psk_generate_local;
100 #endif /* CONFIG_IEEE80211R_AP */
101 #ifdef CONFIG_HS20
102 wconf->disable_gtk = conf->disable_dgaf;
103 if (conf->osen) {
104 wconf->disable_gtk = 1;
105 wconf->wpa = WPA_PROTO_OSEN;
106 wconf->wpa_key_mgmt = WPA_KEY_MGMT_OSEN;
107 wconf->wpa_pairwise = 0;
108 wconf->wpa_group = WPA_CIPHER_CCMP;
109 wconf->rsn_pairwise = WPA_CIPHER_CCMP;
110 wconf->rsn_preauth = 0;
111 wconf->disable_pmksa_caching = 1;
112 wconf->ieee80211w = 1;
113 }
114 #endif /* CONFIG_HS20 */
115 #ifdef CONFIG_TESTING_OPTIONS
116 wconf->corrupt_gtk_rekey_mic_probability =
117 iconf->corrupt_gtk_rekey_mic_probability;
118 if (conf->own_ie_override &&
119 wpabuf_len(conf->own_ie_override) <= MAX_OWN_IE_OVERRIDE) {
120 wconf->own_ie_override_len = wpabuf_len(conf->own_ie_override);
121 os_memcpy(wconf->own_ie_override,
122 wpabuf_head(conf->own_ie_override),
123 wconf->own_ie_override_len);
124 }
125 if (conf->rsne_override_eapol &&
126 wpabuf_len(conf->rsne_override_eapol) <= MAX_OWN_IE_OVERRIDE) {
127 wconf->rsne_override_eapol_set = 1;
128 wconf->rsne_override_eapol_len =
129 wpabuf_len(conf->rsne_override_eapol);
130 os_memcpy(wconf->rsne_override_eapol,
131 wpabuf_head(conf->rsne_override_eapol),
132 wconf->rsne_override_eapol_len);
133 }
134 if (conf->rsnxe_override_eapol &&
135 wpabuf_len(conf->rsnxe_override_eapol) <= MAX_OWN_IE_OVERRIDE) {
136 wconf->rsnxe_override_eapol_set = 1;
137 wconf->rsnxe_override_eapol_len =
138 wpabuf_len(conf->rsnxe_override_eapol);
139 os_memcpy(wconf->rsnxe_override_eapol,
140 wpabuf_head(conf->rsnxe_override_eapol),
141 wconf->rsnxe_override_eapol_len);
142 }
143 if (conf->rsne_override_ft &&
144 wpabuf_len(conf->rsne_override_ft) <= MAX_OWN_IE_OVERRIDE) {
145 wconf->rsne_override_ft_set = 1;
146 wconf->rsne_override_ft_len =
147 wpabuf_len(conf->rsne_override_ft);
148 os_memcpy(wconf->rsne_override_ft,
149 wpabuf_head(conf->rsne_override_ft),
150 wconf->rsne_override_ft_len);
151 }
152 if (conf->rsnxe_override_ft &&
153 wpabuf_len(conf->rsnxe_override_ft) <= MAX_OWN_IE_OVERRIDE) {
154 wconf->rsnxe_override_ft_set = 1;
155 wconf->rsnxe_override_ft_len =
156 wpabuf_len(conf->rsnxe_override_ft);
157 os_memcpy(wconf->rsnxe_override_ft,
158 wpabuf_head(conf->rsnxe_override_ft),
159 wconf->rsnxe_override_ft_len);
160 }
161 if (conf->gtk_rsc_override &&
162 wpabuf_len(conf->gtk_rsc_override) > 0 &&
163 wpabuf_len(conf->gtk_rsc_override) <= WPA_KEY_RSC_LEN) {
164 os_memcpy(wconf->gtk_rsc_override,
165 wpabuf_head(conf->gtk_rsc_override),
166 wpabuf_len(conf->gtk_rsc_override));
167 wconf->gtk_rsc_override_set = 1;
168 }
169 if (conf->igtk_rsc_override &&
170 wpabuf_len(conf->igtk_rsc_override) > 0 &&
171 wpabuf_len(conf->igtk_rsc_override) <= WPA_KEY_RSC_LEN) {
172 os_memcpy(wconf->igtk_rsc_override,
173 wpabuf_head(conf->igtk_rsc_override),
174 wpabuf_len(conf->igtk_rsc_override));
175 wconf->igtk_rsc_override_set = 1;
176 }
177 wconf->ft_rsnxe_used = conf->ft_rsnxe_used;
178 #endif /* CONFIG_TESTING_OPTIONS */
179 #ifdef CONFIG_P2P
180 os_memcpy(wconf->ip_addr_go, conf->ip_addr_go, 4);
181 os_memcpy(wconf->ip_addr_mask, conf->ip_addr_mask, 4);
182 os_memcpy(wconf->ip_addr_start, conf->ip_addr_start, 4);
183 os_memcpy(wconf->ip_addr_end, conf->ip_addr_end, 4);
184 #endif /* CONFIG_P2P */
185 #ifdef CONFIG_FILS
186 wconf->fils_cache_id_set = conf->fils_cache_id_set;
187 os_memcpy(wconf->fils_cache_id, conf->fils_cache_id,
188 FILS_CACHE_ID_LEN);
189 #endif /* CONFIG_FILS */
190 wconf->sae_pwe = conf->sae_pwe;
191 sae_pw_id = hostapd_sae_pw_id_in_use(conf);
192 if (sae_pw_id == 2 && wconf->sae_pwe != 3)
193 wconf->sae_pwe = 1;
194 else if (sae_pw_id == 1 && wconf->sae_pwe == 0)
195 wconf->sae_pwe = 2;
196 #ifdef CONFIG_OWE
197 wconf->owe_ptk_workaround = conf->owe_ptk_workaround;
198 #endif /* CONFIG_OWE */
199 wconf->transition_disable = conf->transition_disable;
200 #ifdef CONFIG_DPP2
201 wconf->dpp_pfs = conf->dpp_pfs;
202 #endif /* CONFIG_DPP2 */
203 }
204
205
hostapd_wpa_auth_logger(void * ctx,const u8 * addr,logger_level level,const char * txt)206 static void hostapd_wpa_auth_logger(void *ctx, const u8 *addr,
207 logger_level level, const char *txt)
208 {
209 #ifndef CONFIG_NO_HOSTAPD_LOGGER
210 struct hostapd_data *hapd = ctx;
211 int hlevel;
212
213 switch (level) {
214 case LOGGER_WARNING:
215 hlevel = HOSTAPD_LEVEL_WARNING;
216 break;
217 case LOGGER_INFO:
218 hlevel = HOSTAPD_LEVEL_INFO;
219 break;
220 case LOGGER_DEBUG:
221 default:
222 hlevel = HOSTAPD_LEVEL_DEBUG;
223 break;
224 }
225
226 hostapd_logger(hapd, addr, HOSTAPD_MODULE_WPA, hlevel, "%s", txt);
227 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
228 }
229
230
hostapd_wpa_auth_disconnect(void * ctx,const u8 * addr,u16 reason)231 static void hostapd_wpa_auth_disconnect(void *ctx, const u8 *addr,
232 u16 reason)
233 {
234 struct hostapd_data *hapd = ctx;
235 wpa_printf(MSG_DEBUG, "%s: WPA authenticator requests disconnect: "
236 "STA " MACSTR " reason %d",
237 __func__, MAC2STR(addr), reason);
238 ap_sta_disconnect(hapd, NULL, addr, reason);
239 }
240
241
hostapd_wpa_auth_mic_failure_report(void * ctx,const u8 * addr)242 static int hostapd_wpa_auth_mic_failure_report(void *ctx, const u8 *addr)
243 {
244 struct hostapd_data *hapd = ctx;
245 return michael_mic_failure(hapd, addr, 0);
246 }
247
248
hostapd_wpa_auth_psk_failure_report(void * ctx,const u8 * addr)249 static void hostapd_wpa_auth_psk_failure_report(void *ctx, const u8 *addr)
250 {
251 struct hostapd_data *hapd = ctx;
252 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_POSSIBLE_PSK_MISMATCH MACSTR,
253 MAC2STR(addr));
254 }
255
256
hostapd_wpa_auth_set_eapol(void * ctx,const u8 * addr,wpa_eapol_variable var,int value)257 static void hostapd_wpa_auth_set_eapol(void *ctx, const u8 *addr,
258 wpa_eapol_variable var, int value)
259 {
260 struct hostapd_data *hapd = ctx;
261 struct sta_info *sta = ap_get_sta(hapd, addr);
262 if (sta == NULL)
263 return;
264 switch (var) {
265 case WPA_EAPOL_portEnabled:
266 ieee802_1x_notify_port_enabled(sta->eapol_sm, value);
267 break;
268 case WPA_EAPOL_portValid:
269 ieee802_1x_notify_port_valid(sta->eapol_sm, value);
270 break;
271 case WPA_EAPOL_authorized:
272 ieee802_1x_set_sta_authorized(hapd, sta, value);
273 break;
274 case WPA_EAPOL_portControl_Auto:
275 if (sta->eapol_sm)
276 sta->eapol_sm->portControl = Auto;
277 break;
278 case WPA_EAPOL_keyRun:
279 if (sta->eapol_sm)
280 sta->eapol_sm->keyRun = value;
281 break;
282 case WPA_EAPOL_keyAvailable:
283 if (sta->eapol_sm)
284 sta->eapol_sm->eap_if->eapKeyAvailable = value;
285 break;
286 case WPA_EAPOL_keyDone:
287 if (sta->eapol_sm)
288 sta->eapol_sm->keyDone = value;
289 break;
290 case WPA_EAPOL_inc_EapolFramesTx:
291 if (sta->eapol_sm)
292 sta->eapol_sm->dot1xAuthEapolFramesTx++;
293 break;
294 }
295 }
296
297
hostapd_wpa_auth_get_eapol(void * ctx,const u8 * addr,wpa_eapol_variable var)298 static int hostapd_wpa_auth_get_eapol(void *ctx, const u8 *addr,
299 wpa_eapol_variable var)
300 {
301 struct hostapd_data *hapd = ctx;
302 struct sta_info *sta = ap_get_sta(hapd, addr);
303 if (sta == NULL || sta->eapol_sm == NULL)
304 return -1;
305 switch (var) {
306 case WPA_EAPOL_keyRun:
307 return sta->eapol_sm->keyRun;
308 case WPA_EAPOL_keyAvailable:
309 return sta->eapol_sm->eap_if->eapKeyAvailable;
310 default:
311 return -1;
312 }
313 }
314
315
hostapd_wpa_auth_get_psk(void * ctx,const u8 * addr,const u8 * p2p_dev_addr,const u8 * prev_psk,size_t * psk_len,int * vlan_id)316 static const u8 * hostapd_wpa_auth_get_psk(void *ctx, const u8 *addr,
317 const u8 *p2p_dev_addr,
318 const u8 *prev_psk, size_t *psk_len,
319 int *vlan_id)
320 {
321 struct hostapd_data *hapd = ctx;
322 struct sta_info *sta = ap_get_sta(hapd, addr);
323 const u8 *psk;
324
325 if (vlan_id)
326 *vlan_id = 0;
327 if (psk_len)
328 *psk_len = PMK_LEN;
329
330 #ifdef CONFIG_SAE
331 if (sta && sta->auth_alg == WLAN_AUTH_SAE) {
332 if (!sta->sae || prev_psk)
333 return NULL;
334 return sta->sae->pmk;
335 }
336 if (sta && wpa_auth_uses_sae(sta->wpa_sm)) {
337 wpa_printf(MSG_DEBUG,
338 "No PSK for STA trying to use SAE with PMKSA caching");
339 return NULL;
340 }
341 #endif /* CONFIG_SAE */
342
343 #ifdef CONFIG_OWE
344 if ((hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_OWE) &&
345 sta && sta->owe_pmk) {
346 if (psk_len)
347 *psk_len = sta->owe_pmk_len;
348 return sta->owe_pmk;
349 }
350 if ((hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_OWE) && sta) {
351 struct rsn_pmksa_cache_entry *sa;
352
353 sa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
354 if (sa && sa->akmp == WPA_KEY_MGMT_OWE) {
355 if (psk_len)
356 *psk_len = sa->pmk_len;
357 return sa->pmk;
358 }
359 }
360 #endif /* CONFIG_OWE */
361
362 psk = hostapd_get_psk(hapd->conf, addr, p2p_dev_addr, prev_psk,
363 vlan_id);
364 /*
365 * This is about to iterate over all psks, prev_psk gives the last
366 * returned psk which should not be returned again.
367 * logic list (all hostapd_get_psk; all sta->psk)
368 */
369 if (sta && sta->psk && !psk) {
370 struct hostapd_sta_wpa_psk_short *pos;
371
372 if (vlan_id)
373 *vlan_id = 0;
374 psk = sta->psk->psk;
375 for (pos = sta->psk; pos; pos = pos->next) {
376 if (pos->is_passphrase) {
377 pbkdf2_sha1(pos->passphrase,
378 hapd->conf->ssid.ssid,
379 hapd->conf->ssid.ssid_len, 4096,
380 pos->psk, PMK_LEN);
381 pos->is_passphrase = 0;
382 }
383 if (pos->psk == prev_psk) {
384 psk = pos->next ? pos->next->psk : NULL;
385 break;
386 }
387 }
388 }
389 return psk;
390 }
391
392
hostapd_wpa_auth_get_msk(void * ctx,const u8 * addr,u8 * msk,size_t * len)393 static int hostapd_wpa_auth_get_msk(void *ctx, const u8 *addr, u8 *msk,
394 size_t *len)
395 {
396 struct hostapd_data *hapd = ctx;
397 const u8 *key;
398 size_t keylen;
399 struct sta_info *sta;
400
401 sta = ap_get_sta(hapd, addr);
402 if (sta == NULL) {
403 wpa_printf(MSG_DEBUG, "AUTH_GET_MSK: Cannot find STA");
404 return -1;
405 }
406
407 key = ieee802_1x_get_key(sta->eapol_sm, &keylen);
408 if (key == NULL) {
409 wpa_printf(MSG_DEBUG, "AUTH_GET_MSK: Key is null, eapol_sm: %p",
410 sta->eapol_sm);
411 return -1;
412 }
413
414 if (keylen > *len)
415 keylen = *len;
416 os_memcpy(msk, key, keylen);
417 *len = keylen;
418
419 return 0;
420 }
421
422
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,enum key_flag key_flag)423 static int hostapd_wpa_auth_set_key(void *ctx, int vlan_id, enum wpa_alg alg,
424 const u8 *addr, int idx, u8 *key,
425 size_t key_len, enum key_flag key_flag)
426 {
427 struct hostapd_data *hapd = ctx;
428 const char *ifname = hapd->conf->iface;
429
430 if (vlan_id > 0) {
431 ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
432 if (!ifname) {
433 if (!(hapd->iface->drv_flags &
434 WPA_DRIVER_FLAGS_VLAN_OFFLOAD))
435 return -1;
436 ifname = hapd->conf->iface;
437 }
438 }
439
440 #ifdef CONFIG_TESTING_OPTIONS
441 if (key_flag & KEY_FLAG_MODIFY) {
442 /* We are updating an already installed key. Don't overwrite
443 * the already stored key information with zeros.
444 */
445 } else if (addr && !is_broadcast_ether_addr(addr)) {
446 struct sta_info *sta;
447
448 sta = ap_get_sta(hapd, addr);
449 if (sta) {
450 sta->last_tk_alg = alg;
451 sta->last_tk_key_idx = idx;
452 if (key)
453 os_memcpy(sta->last_tk, key, key_len);
454 sta->last_tk_len = key_len;
455 }
456 } else if (alg == WPA_ALG_BIP_CMAC_128 ||
457 alg == WPA_ALG_BIP_GMAC_128 ||
458 alg == WPA_ALG_BIP_GMAC_256 ||
459 alg == WPA_ALG_BIP_CMAC_256) {
460 if (idx == 4 || idx == 5) {
461 hapd->last_igtk_alg = alg;
462 hapd->last_igtk_key_idx = idx;
463 if (key)
464 os_memcpy(hapd->last_igtk, key, key_len);
465 hapd->last_igtk_len = key_len;
466 } else if (idx == 6 || idx == 7) {
467 hapd->last_bigtk_alg = alg;
468 hapd->last_bigtk_key_idx = idx;
469 if (key)
470 os_memcpy(hapd->last_bigtk, key, key_len);
471 hapd->last_bigtk_len = key_len;
472 }
473 } else {
474 hapd->last_gtk_alg = alg;
475 hapd->last_gtk_key_idx = idx;
476 if (key)
477 os_memcpy(hapd->last_gtk, key, key_len);
478 hapd->last_gtk_len = key_len;
479 }
480 #endif /* CONFIG_TESTING_OPTIONS */
481 return hostapd_drv_set_key(ifname, hapd, alg, addr, idx, vlan_id, 1,
482 NULL, 0, key, key_len, key_flag);
483 }
484
485
hostapd_wpa_auth_get_seqnum(void * ctx,const u8 * addr,int idx,u8 * seq)486 static int hostapd_wpa_auth_get_seqnum(void *ctx, const u8 *addr, int idx,
487 u8 *seq)
488 {
489 struct hostapd_data *hapd = ctx;
490 return hostapd_get_seqnum(hapd->conf->iface, hapd, addr, idx, seq);
491 }
492
493
hostapd_wpa_auth_send_eapol(void * ctx,const u8 * addr,const u8 * data,size_t data_len,int encrypt)494 static int hostapd_wpa_auth_send_eapol(void *ctx, const u8 *addr,
495 const u8 *data, size_t data_len,
496 int encrypt)
497 {
498 struct hostapd_data *hapd = ctx;
499 struct sta_info *sta;
500 u32 flags = 0;
501
502 #ifdef CONFIG_TESTING_OPTIONS
503 if (hapd->ext_eapol_frame_io) {
504 size_t hex_len = 2 * data_len + 1;
505 char *hex = os_malloc(hex_len);
506
507 if (hex == NULL)
508 return -1;
509 wpa_snprintf_hex(hex, hex_len, data, data_len);
510 wpa_msg(hapd->msg_ctx, MSG_INFO, "EAPOL-TX " MACSTR " %s",
511 MAC2STR(addr), hex);
512 os_free(hex);
513 return 0;
514 }
515 #endif /* CONFIG_TESTING_OPTIONS */
516
517 sta = ap_get_sta(hapd, addr);
518 if (sta)
519 flags = hostapd_sta_flags_to_drv(sta->flags);
520
521 return hostapd_drv_hapd_send_eapol(hapd, addr, data, data_len,
522 encrypt, flags);
523 }
524
525
hostapd_wpa_auth_for_each_sta(void * ctx,int (* cb)(struct wpa_state_machine * sm,void * ctx),void * cb_ctx)526 static int hostapd_wpa_auth_for_each_sta(
527 void *ctx, int (*cb)(struct wpa_state_machine *sm, void *ctx),
528 void *cb_ctx)
529 {
530 struct hostapd_data *hapd = ctx;
531 struct sta_info *sta;
532
533 for (sta = hapd->sta_list; sta; sta = sta->next) {
534 if (sta->wpa_sm && cb(sta->wpa_sm, cb_ctx))
535 return 1;
536 }
537 return 0;
538 }
539
540
541 struct wpa_auth_iface_iter_data {
542 int (*cb)(struct wpa_authenticator *sm, void *ctx);
543 void *cb_ctx;
544 };
545
wpa_auth_iface_iter(struct hostapd_iface * iface,void * ctx)546 static int wpa_auth_iface_iter(struct hostapd_iface *iface, void *ctx)
547 {
548 struct wpa_auth_iface_iter_data *data = ctx;
549 size_t i;
550 for (i = 0; i < iface->num_bss; i++) {
551 if (iface->bss[i]->wpa_auth &&
552 data->cb(iface->bss[i]->wpa_auth, data->cb_ctx))
553 return 1;
554 }
555 return 0;
556 }
557
558
hostapd_wpa_auth_for_each_auth(void * ctx,int (* cb)(struct wpa_authenticator * sm,void * ctx),void * cb_ctx)559 static int hostapd_wpa_auth_for_each_auth(
560 void *ctx, int (*cb)(struct wpa_authenticator *sm, void *ctx),
561 void *cb_ctx)
562 {
563 struct hostapd_data *hapd = ctx;
564 struct wpa_auth_iface_iter_data data;
565 if (hapd->iface->interfaces == NULL ||
566 hapd->iface->interfaces->for_each_interface == NULL)
567 return -1;
568 data.cb = cb;
569 data.cb_ctx = cb_ctx;
570 return hapd->iface->interfaces->for_each_interface(
571 hapd->iface->interfaces, wpa_auth_iface_iter, &data);
572 }
573
574
575 #ifdef CONFIG_IEEE80211R_AP
576
577 struct wpa_ft_rrb_rx_later_data {
578 struct dl_list list;
579 u8 addr[ETH_ALEN];
580 size_t data_len;
581 /* followed by data_len octets of data */
582 };
583
hostapd_wpa_ft_rrb_rx_later(void * eloop_ctx,void * timeout_ctx)584 static void hostapd_wpa_ft_rrb_rx_later(void *eloop_ctx, void *timeout_ctx)
585 {
586 struct hostapd_data *hapd = eloop_ctx;
587 struct wpa_ft_rrb_rx_later_data *data, *n;
588
589 dl_list_for_each_safe(data, n, &hapd->l2_queue,
590 struct wpa_ft_rrb_rx_later_data, list) {
591 if (hapd->wpa_auth) {
592 wpa_ft_rrb_rx(hapd->wpa_auth, data->addr,
593 (const u8 *) (data + 1),
594 data->data_len);
595 }
596 dl_list_del(&data->list);
597 os_free(data);
598 }
599 }
600
601
602 struct wpa_auth_ft_iface_iter_data {
603 struct hostapd_data *src_hapd;
604 const u8 *dst;
605 const u8 *data;
606 size_t data_len;
607 };
608
609
hostapd_wpa_auth_ft_iter(struct hostapd_iface * iface,void * ctx)610 static int hostapd_wpa_auth_ft_iter(struct hostapd_iface *iface, void *ctx)
611 {
612 struct wpa_auth_ft_iface_iter_data *idata = ctx;
613 struct wpa_ft_rrb_rx_later_data *data;
614 struct hostapd_data *hapd;
615 size_t j;
616
617 for (j = 0; j < iface->num_bss; j++) {
618 hapd = iface->bss[j];
619 if (hapd == idata->src_hapd ||
620 !hapd->wpa_auth ||
621 os_memcmp(hapd->own_addr, idata->dst, ETH_ALEN) != 0)
622 continue;
623
624 wpa_printf(MSG_DEBUG,
625 "FT: Send RRB data directly to locally managed BSS "
626 MACSTR "@%s -> " MACSTR "@%s",
627 MAC2STR(idata->src_hapd->own_addr),
628 idata->src_hapd->conf->iface,
629 MAC2STR(hapd->own_addr), hapd->conf->iface);
630
631 /* Defer wpa_ft_rrb_rx() until next eloop step as this is
632 * when it would be triggered when reading from a socket.
633 * This avoids
634 * hapd0:send -> hapd1:recv -> hapd1:send -> hapd0:recv,
635 * that is calling hapd0:recv handler from within
636 * hapd0:send directly.
637 */
638 data = os_zalloc(sizeof(*data) + idata->data_len);
639 if (!data)
640 return 1;
641
642 os_memcpy(data->addr, idata->src_hapd->own_addr, ETH_ALEN);
643 os_memcpy(data + 1, idata->data, idata->data_len);
644 data->data_len = idata->data_len;
645
646 dl_list_add(&hapd->l2_queue, &data->list);
647
648 if (!eloop_is_timeout_registered(hostapd_wpa_ft_rrb_rx_later,
649 hapd, NULL))
650 eloop_register_timeout(0, 0,
651 hostapd_wpa_ft_rrb_rx_later,
652 hapd, NULL);
653
654 return 1;
655 }
656
657 return 0;
658 }
659
660 #endif /* CONFIG_IEEE80211R_AP */
661
662
hostapd_wpa_auth_send_ether(void * ctx,const u8 * dst,u16 proto,const u8 * data,size_t data_len)663 static int hostapd_wpa_auth_send_ether(void *ctx, const u8 *dst, u16 proto,
664 const u8 *data, size_t data_len)
665 {
666 struct hostapd_data *hapd = ctx;
667 struct l2_ethhdr *buf;
668 int ret;
669
670 #ifdef CONFIG_TESTING_OPTIONS
671 if (hapd->ext_eapol_frame_io && proto == ETH_P_EAPOL) {
672 size_t hex_len = 2 * data_len + 1;
673 char *hex = os_malloc(hex_len);
674
675 if (hex == NULL)
676 return -1;
677 wpa_snprintf_hex(hex, hex_len, data, data_len);
678 wpa_msg(hapd->msg_ctx, MSG_INFO, "EAPOL-TX " MACSTR " %s",
679 MAC2STR(dst), hex);
680 os_free(hex);
681 return 0;
682 }
683 #endif /* CONFIG_TESTING_OPTIONS */
684
685 #ifdef CONFIG_IEEE80211R_AP
686 if (proto == ETH_P_RRB && hapd->iface->interfaces &&
687 hapd->iface->interfaces->for_each_interface) {
688 int res;
689 struct wpa_auth_ft_iface_iter_data idata;
690 idata.src_hapd = hapd;
691 idata.dst = dst;
692 idata.data = data;
693 idata.data_len = data_len;
694 res = hapd->iface->interfaces->for_each_interface(
695 hapd->iface->interfaces, hostapd_wpa_auth_ft_iter,
696 &idata);
697 if (res == 1)
698 return data_len;
699 }
700 #endif /* CONFIG_IEEE80211R_AP */
701
702 if (hapd->l2 == NULL)
703 return -1;
704
705 buf = os_malloc(sizeof(*buf) + data_len);
706 if (buf == NULL)
707 return -1;
708 os_memcpy(buf->h_dest, dst, ETH_ALEN);
709 os_memcpy(buf->h_source, hapd->own_addr, ETH_ALEN);
710 buf->h_proto = host_to_be16(proto);
711 os_memcpy(buf + 1, data, data_len);
712 ret = l2_packet_send(hapd->l2, dst, proto, (u8 *) buf,
713 sizeof(*buf) + data_len);
714 os_free(buf);
715 return ret;
716 }
717
718
719 #ifdef CONFIG_ETH_P_OUI
hostapd_wpa_get_oui(struct hostapd_data * hapd,u8 oui_suffix)720 static struct eth_p_oui_ctx * hostapd_wpa_get_oui(struct hostapd_data *hapd,
721 u8 oui_suffix)
722 {
723 switch (oui_suffix) {
724 #ifdef CONFIG_IEEE80211R_AP
725 case FT_PACKET_R0KH_R1KH_PULL:
726 return hapd->oui_pull;
727 case FT_PACKET_R0KH_R1KH_RESP:
728 return hapd->oui_resp;
729 case FT_PACKET_R0KH_R1KH_PUSH:
730 return hapd->oui_push;
731 case FT_PACKET_R0KH_R1KH_SEQ_REQ:
732 return hapd->oui_sreq;
733 case FT_PACKET_R0KH_R1KH_SEQ_RESP:
734 return hapd->oui_sresp;
735 #endif /* CONFIG_IEEE80211R_AP */
736 default:
737 return NULL;
738 }
739 }
740 #endif /* CONFIG_ETH_P_OUI */
741
742
743 #ifdef CONFIG_IEEE80211R_AP
744
745 struct oui_deliver_later_data {
746 struct dl_list list;
747 u8 src_addr[ETH_ALEN];
748 u8 dst_addr[ETH_ALEN];
749 size_t data_len;
750 u8 oui_suffix;
751 /* followed by data_len octets of data */
752 };
753
hostapd_oui_deliver_later(void * eloop_ctx,void * timeout_ctx)754 static void hostapd_oui_deliver_later(void *eloop_ctx, void *timeout_ctx)
755 {
756 struct hostapd_data *hapd = eloop_ctx;
757 struct oui_deliver_later_data *data, *n;
758 struct eth_p_oui_ctx *oui_ctx;
759
760 dl_list_for_each_safe(data, n, &hapd->l2_oui_queue,
761 struct oui_deliver_later_data, list) {
762 oui_ctx = hostapd_wpa_get_oui(hapd, data->oui_suffix);
763 wpa_printf(MSG_DEBUG, "RRB(%s): %s src=" MACSTR " dst=" MACSTR
764 " oui_suffix=%u data_len=%u data=%p",
765 hapd->conf->iface, __func__,
766 MAC2STR(data->src_addr), MAC2STR(data->dst_addr),
767 data->oui_suffix, (unsigned int) data->data_len,
768 data);
769 if (hapd->wpa_auth && oui_ctx) {
770 eth_p_oui_deliver(oui_ctx, data->src_addr,
771 data->dst_addr,
772 (const u8 *) (data + 1),
773 data->data_len);
774 }
775 dl_list_del(&data->list);
776 os_free(data);
777 }
778 }
779
780
781 struct wpa_auth_oui_iface_iter_data {
782 struct hostapd_data *src_hapd;
783 const u8 *dst_addr;
784 const u8 *data;
785 size_t data_len;
786 u8 oui_suffix;
787 };
788
hostapd_wpa_auth_oui_iter(struct hostapd_iface * iface,void * ctx)789 static int hostapd_wpa_auth_oui_iter(struct hostapd_iface *iface, void *ctx)
790 {
791 struct wpa_auth_oui_iface_iter_data *idata = ctx;
792 struct oui_deliver_later_data *data;
793 struct hostapd_data *hapd, *src_hapd = idata->src_hapd;
794 size_t j;
795
796 for (j = 0; j < iface->num_bss; j++) {
797 hapd = iface->bss[j];
798 if (hapd == src_hapd)
799 continue; /* don't deliver back to same interface */
800 if (!wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) ||
801 hapd->conf->ssid.ssid_len !=
802 src_hapd->conf->ssid.ssid_len ||
803 os_memcmp(hapd->conf->ssid.ssid,
804 src_hapd->conf->ssid.ssid,
805 hapd->conf->ssid.ssid_len) != 0 ||
806 os_memcmp(hapd->conf->mobility_domain,
807 src_hapd->conf->mobility_domain,
808 MOBILITY_DOMAIN_ID_LEN) != 0)
809 continue; /* no matching FT SSID/mobility domain */
810 if (!is_multicast_ether_addr(idata->dst_addr) &&
811 os_memcmp(hapd->own_addr, idata->dst_addr, ETH_ALEN) != 0)
812 continue; /* destination address does not match */
813
814 /* defer eth_p_oui_deliver until next eloop step as this is
815 * when it would be triggerd from reading from sock
816 * This avoids
817 * hapd0:send -> hapd1:recv -> hapd1:send -> hapd0:recv,
818 * that is calling hapd0:recv handler from within
819 * hapd0:send directly.
820 */
821 data = os_zalloc(sizeof(*data) + idata->data_len);
822 if (!data)
823 return 1;
824 wpa_printf(MSG_DEBUG,
825 "RRB(%s): local delivery to %s dst=" MACSTR
826 " oui_suffix=%u data_len=%u data=%p",
827 src_hapd->conf->iface, hapd->conf->iface,
828 MAC2STR(idata->dst_addr), idata->oui_suffix,
829 (unsigned int) idata->data_len, data);
830
831 os_memcpy(data->src_addr, src_hapd->own_addr, ETH_ALEN);
832 os_memcpy(data->dst_addr, idata->dst_addr, ETH_ALEN);
833 os_memcpy(data + 1, idata->data, idata->data_len);
834 data->data_len = idata->data_len;
835 data->oui_suffix = idata->oui_suffix;
836
837 dl_list_add_tail(&hapd->l2_oui_queue, &data->list);
838
839 if (!eloop_is_timeout_registered(hostapd_oui_deliver_later,
840 hapd, NULL))
841 eloop_register_timeout(0, 0,
842 hostapd_oui_deliver_later,
843 hapd, NULL);
844
845 /* If dst_addr is a multicast address, do not return any
846 * non-zero value here. Otherwise, the iteration of
847 * for_each_interface() will be stopped. */
848 if (!is_multicast_ether_addr(idata->dst_addr))
849 return 1;
850 }
851
852 return 0;
853 }
854
855 #endif /* CONFIG_IEEE80211R_AP */
856
857
hostapd_wpa_auth_send_oui(void * ctx,const u8 * dst,u8 oui_suffix,const u8 * data,size_t data_len)858 static int hostapd_wpa_auth_send_oui(void *ctx, const u8 *dst, u8 oui_suffix,
859 const u8 *data, size_t data_len)
860 {
861 #ifdef CONFIG_ETH_P_OUI
862 struct hostapd_data *hapd = ctx;
863 struct eth_p_oui_ctx *oui_ctx;
864
865 wpa_printf(MSG_DEBUG, "RRB(%s): send to dst=" MACSTR
866 " oui_suffix=%u data_len=%u",
867 hapd->conf->iface, MAC2STR(dst), oui_suffix,
868 (unsigned int) data_len);
869 #ifdef CONFIG_IEEE80211R_AP
870 if (hapd->iface->interfaces &&
871 hapd->iface->interfaces->for_each_interface) {
872 struct wpa_auth_oui_iface_iter_data idata;
873 int res;
874
875 idata.src_hapd = hapd;
876 idata.dst_addr = dst;
877 idata.data = data;
878 idata.data_len = data_len;
879 idata.oui_suffix = oui_suffix;
880 res = hapd->iface->interfaces->for_each_interface(
881 hapd->iface->interfaces, hostapd_wpa_auth_oui_iter,
882 &idata);
883 if (res == 1)
884 return data_len;
885 }
886 #endif /* CONFIG_IEEE80211R_AP */
887
888 oui_ctx = hostapd_wpa_get_oui(hapd, oui_suffix);
889 if (!oui_ctx)
890 return -1;
891
892 return eth_p_oui_send(oui_ctx, hapd->own_addr, dst, data, data_len);
893 #else /* CONFIG_ETH_P_OUI */
894 return -1;
895 #endif /* CONFIG_ETH_P_OUI */
896 }
897
898
hostapd_channel_info(void * ctx,struct wpa_channel_info * ci)899 static int hostapd_channel_info(void *ctx, struct wpa_channel_info *ci)
900 {
901 struct hostapd_data *hapd = ctx;
902
903 return hostapd_drv_channel_info(hapd, ci);
904 }
905
906
hostapd_wpa_auth_update_vlan(void * ctx,const u8 * addr,int vlan_id)907 static int hostapd_wpa_auth_update_vlan(void *ctx, const u8 *addr, int vlan_id)
908 {
909 #ifndef CONFIG_NO_VLAN
910 struct hostapd_data *hapd = ctx;
911 struct sta_info *sta;
912
913 sta = ap_get_sta(hapd, addr);
914 if (!sta)
915 return -1;
916
917 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_VLAN_OFFLOAD)) {
918 struct vlan_description vlan_desc;
919
920 os_memset(&vlan_desc, 0, sizeof(vlan_desc));
921 vlan_desc.notempty = 1;
922 vlan_desc.untagged = vlan_id;
923 if (!hostapd_vlan_valid(hapd->conf->vlan, &vlan_desc)) {
924 wpa_printf(MSG_INFO,
925 "Invalid VLAN ID %d in wpa_psk_file",
926 vlan_id);
927 return -1;
928 }
929
930 if (ap_sta_set_vlan(hapd, sta, &vlan_desc) < 0) {
931 wpa_printf(MSG_INFO,
932 "Failed to assign VLAN ID %d from wpa_psk_file to "
933 MACSTR, vlan_id, MAC2STR(sta->addr));
934 return -1;
935 }
936 } else {
937 sta->vlan_id = vlan_id;
938 }
939
940 wpa_printf(MSG_INFO,
941 "Assigned VLAN ID %d from wpa_psk_file to " MACSTR,
942 vlan_id, MAC2STR(sta->addr));
943 if ((sta->flags & WLAN_STA_ASSOC) &&
944 ap_sta_bind_vlan(hapd, sta) < 0)
945 return -1;
946 #endif /* CONFIG_NO_VLAN */
947
948 return 0;
949 }
950
951
952 #ifdef CONFIG_OCV
hostapd_get_sta_tx_params(void * ctx,const u8 * addr,int ap_max_chanwidth,int ap_seg1_idx,int * bandwidth,int * seg1_idx)953 static int hostapd_get_sta_tx_params(void *ctx, const u8 *addr,
954 int ap_max_chanwidth, int ap_seg1_idx,
955 int *bandwidth, int *seg1_idx)
956 {
957 struct hostapd_data *hapd = ctx;
958 struct sta_info *sta;
959
960 sta = ap_get_sta(hapd, addr);
961 if (!sta) {
962 hostapd_wpa_auth_logger(hapd, addr, LOGGER_INFO,
963 "Failed to get STA info to validate received OCI");
964 return -1;
965 }
966
967 return get_tx_parameters(sta, ap_max_chanwidth, ap_seg1_idx, bandwidth,
968 seg1_idx);
969 }
970 #endif /* CONFIG_OCV */
971
972
973 #ifdef CONFIG_IEEE80211R_AP
974
hostapd_wpa_auth_send_ft_action(void * ctx,const u8 * dst,const u8 * data,size_t data_len)975 static int hostapd_wpa_auth_send_ft_action(void *ctx, const u8 *dst,
976 const u8 *data, size_t data_len)
977 {
978 struct hostapd_data *hapd = ctx;
979 int res;
980 struct ieee80211_mgmt *m;
981 size_t mlen;
982 struct sta_info *sta;
983
984 sta = ap_get_sta(hapd, dst);
985 if (sta == NULL || sta->wpa_sm == NULL)
986 return -1;
987
988 m = os_zalloc(sizeof(*m) + data_len);
989 if (m == NULL)
990 return -1;
991 mlen = ((u8 *) &m->u - (u8 *) m) + data_len;
992 m->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
993 WLAN_FC_STYPE_ACTION);
994 os_memcpy(m->da, dst, ETH_ALEN);
995 os_memcpy(m->sa, hapd->own_addr, ETH_ALEN);
996 os_memcpy(m->bssid, hapd->own_addr, ETH_ALEN);
997 os_memcpy(&m->u, data, data_len);
998
999 res = hostapd_drv_send_mlme(hapd, (u8 *) m, mlen, 0, NULL, 0, 0);
1000 os_free(m);
1001 return res;
1002 }
1003
1004
1005 static struct wpa_state_machine *
hostapd_wpa_auth_add_sta(void * ctx,const u8 * sta_addr)1006 hostapd_wpa_auth_add_sta(void *ctx, const u8 *sta_addr)
1007 {
1008 struct hostapd_data *hapd = ctx;
1009 struct sta_info *sta;
1010 int ret;
1011
1012 wpa_printf(MSG_DEBUG, "Add station entry for " MACSTR
1013 " based on WPA authenticator callback",
1014 MAC2STR(sta_addr));
1015 ret = hostapd_add_sta_node(hapd, sta_addr, WLAN_AUTH_FT);
1016
1017 /*
1018 * The expected return values from hostapd_add_sta_node() are
1019 * 0: successfully added STA entry
1020 * -EOPNOTSUPP: driver or driver wrapper does not support/need this
1021 * operations
1022 * any other negative value: error in adding the STA entry */
1023 if (ret < 0 && ret != -EOPNOTSUPP)
1024 return NULL;
1025
1026 sta = ap_sta_add(hapd, sta_addr);
1027 if (sta == NULL)
1028 return NULL;
1029 if (ret == 0)
1030 sta->added_unassoc = 1;
1031
1032 sta->ft_over_ds = 1;
1033 if (sta->wpa_sm) {
1034 sta->auth_alg = WLAN_AUTH_FT;
1035 return sta->wpa_sm;
1036 }
1037
1038 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr, NULL);
1039 if (sta->wpa_sm == NULL) {
1040 ap_free_sta(hapd, sta);
1041 return NULL;
1042 }
1043 sta->auth_alg = WLAN_AUTH_FT;
1044
1045 return sta->wpa_sm;
1046 }
1047
1048
hostapd_wpa_auth_add_sta_ft(void * ctx,const u8 * sta_addr)1049 static int hostapd_wpa_auth_add_sta_ft(void *ctx, const u8 *sta_addr)
1050 {
1051 struct hostapd_data *hapd = ctx;
1052 struct sta_info *sta;
1053
1054 sta = ap_get_sta(hapd, sta_addr);
1055 if (!sta)
1056 return -1;
1057
1058 if (FULL_AP_CLIENT_STATE_SUPP(hapd->iface->drv_flags) &&
1059 (sta->flags & WLAN_STA_MFP) && ap_sta_is_authorized(sta) &&
1060 !(hapd->conf->mesh & MESH_ENABLED) && !(sta->added_unassoc)) {
1061 /* We could not do this in handle_auth() since there was a
1062 * PMF-enabled association for the STA and the new
1063 * authentication attempt was not yet fully processed. Now that
1064 * we are ready to configure the TK to the driver,
1065 * authentication has succeeded and we can clean up the driver
1066 * STA entry to avoid issues with any maintained state from the
1067 * previous association. */
1068 wpa_printf(MSG_DEBUG,
1069 "FT: Remove and re-add driver STA entry after successful FT authentication");
1070 return ap_sta_re_add(hapd, sta);
1071 }
1072
1073 return 0;
1074 }
1075
1076
hostapd_wpa_auth_set_vlan(void * ctx,const u8 * sta_addr,struct vlan_description * vlan)1077 static int hostapd_wpa_auth_set_vlan(void *ctx, const u8 *sta_addr,
1078 struct vlan_description *vlan)
1079 {
1080 struct hostapd_data *hapd = ctx;
1081 struct sta_info *sta;
1082
1083 sta = ap_get_sta(hapd, sta_addr);
1084 if (!sta || !sta->wpa_sm)
1085 return -1;
1086
1087 if (vlan->notempty &&
1088 !hostapd_vlan_valid(hapd->conf->vlan, vlan)) {
1089 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1090 HOSTAPD_LEVEL_INFO,
1091 "Invalid VLAN %d%s received from FT",
1092 vlan->untagged, vlan->tagged[0] ? "+" : "");
1093 return -1;
1094 }
1095
1096 if (ap_sta_set_vlan(hapd, sta, vlan) < 0)
1097 return -1;
1098 /* Configure wpa_group for GTK but ignore error due to driver not
1099 * knowing this STA. */
1100 ap_sta_bind_vlan(hapd, sta);
1101
1102 if (sta->vlan_id)
1103 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1104 HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
1105
1106 return 0;
1107 }
1108
1109
hostapd_wpa_auth_get_vlan(void * ctx,const u8 * sta_addr,struct vlan_description * vlan)1110 static int hostapd_wpa_auth_get_vlan(void *ctx, const u8 *sta_addr,
1111 struct vlan_description *vlan)
1112 {
1113 struct hostapd_data *hapd = ctx;
1114 struct sta_info *sta;
1115
1116 sta = ap_get_sta(hapd, sta_addr);
1117 if (!sta)
1118 return -1;
1119
1120 if (sta->vlan_desc)
1121 *vlan = *sta->vlan_desc;
1122 else
1123 os_memset(vlan, 0, sizeof(*vlan));
1124
1125 return 0;
1126 }
1127
1128
1129 static int
hostapd_wpa_auth_set_identity(void * ctx,const u8 * sta_addr,const u8 * identity,size_t identity_len)1130 hostapd_wpa_auth_set_identity(void *ctx, const u8 *sta_addr,
1131 const u8 *identity, size_t identity_len)
1132 {
1133 struct hostapd_data *hapd = ctx;
1134 struct sta_info *sta;
1135
1136 sta = ap_get_sta(hapd, sta_addr);
1137 if (!sta)
1138 return -1;
1139
1140 os_free(sta->identity);
1141 sta->identity = NULL;
1142
1143 if (sta->eapol_sm) {
1144 os_free(sta->eapol_sm->identity);
1145 sta->eapol_sm->identity = NULL;
1146 sta->eapol_sm->identity_len = 0;
1147 }
1148
1149 if (!identity_len)
1150 return 0;
1151
1152 /* sta->identity is NULL terminated */
1153 sta->identity = os_zalloc(identity_len + 1);
1154 if (!sta->identity)
1155 return -1;
1156 os_memcpy(sta->identity, identity, identity_len);
1157
1158 if (sta->eapol_sm) {
1159 sta->eapol_sm->identity = os_zalloc(identity_len);
1160 if (!sta->eapol_sm->identity)
1161 return -1;
1162 os_memcpy(sta->eapol_sm->identity, identity, identity_len);
1163 sta->eapol_sm->identity_len = identity_len;
1164 }
1165
1166 return 0;
1167 }
1168
1169
1170 static size_t
hostapd_wpa_auth_get_identity(void * ctx,const u8 * sta_addr,const u8 ** buf)1171 hostapd_wpa_auth_get_identity(void *ctx, const u8 *sta_addr, const u8 **buf)
1172 {
1173 struct hostapd_data *hapd = ctx;
1174 struct sta_info *sta;
1175 size_t len;
1176 char *identity;
1177
1178 sta = ap_get_sta(hapd, sta_addr);
1179 if (!sta)
1180 return 0;
1181
1182 *buf = ieee802_1x_get_identity(sta->eapol_sm, &len);
1183 if (*buf && len)
1184 return len;
1185
1186 if (!sta->identity) {
1187 *buf = NULL;
1188 return 0;
1189 }
1190
1191 identity = sta->identity;
1192 len = os_strlen(identity);
1193 *buf = (u8 *) identity;
1194
1195 return len;
1196 }
1197
1198
1199 static int
hostapd_wpa_auth_set_radius_cui(void * ctx,const u8 * sta_addr,const u8 * radius_cui,size_t radius_cui_len)1200 hostapd_wpa_auth_set_radius_cui(void *ctx, const u8 *sta_addr,
1201 const u8 *radius_cui, size_t radius_cui_len)
1202 {
1203 struct hostapd_data *hapd = ctx;
1204 struct sta_info *sta;
1205
1206 sta = ap_get_sta(hapd, sta_addr);
1207 if (!sta)
1208 return -1;
1209
1210 os_free(sta->radius_cui);
1211 sta->radius_cui = NULL;
1212
1213 if (sta->eapol_sm) {
1214 wpabuf_free(sta->eapol_sm->radius_cui);
1215 sta->eapol_sm->radius_cui = NULL;
1216 }
1217
1218 if (!radius_cui)
1219 return 0;
1220
1221 /* sta->radius_cui is NULL terminated */
1222 sta->radius_cui = os_zalloc(radius_cui_len + 1);
1223 if (!sta->radius_cui)
1224 return -1;
1225 os_memcpy(sta->radius_cui, radius_cui, radius_cui_len);
1226
1227 if (sta->eapol_sm) {
1228 sta->eapol_sm->radius_cui = wpabuf_alloc_copy(radius_cui,
1229 radius_cui_len);
1230 if (!sta->eapol_sm->radius_cui)
1231 return -1;
1232 }
1233
1234 return 0;
1235 }
1236
1237
1238 static size_t
hostapd_wpa_auth_get_radius_cui(void * ctx,const u8 * sta_addr,const u8 ** buf)1239 hostapd_wpa_auth_get_radius_cui(void *ctx, const u8 *sta_addr, const u8 **buf)
1240 {
1241 struct hostapd_data *hapd = ctx;
1242 struct sta_info *sta;
1243 struct wpabuf *b;
1244 size_t len;
1245 char *radius_cui;
1246
1247 sta = ap_get_sta(hapd, sta_addr);
1248 if (!sta)
1249 return 0;
1250
1251 b = ieee802_1x_get_radius_cui(sta->eapol_sm);
1252 if (b) {
1253 len = wpabuf_len(b);
1254 *buf = wpabuf_head(b);
1255 return len;
1256 }
1257
1258 if (!sta->radius_cui) {
1259 *buf = NULL;
1260 return 0;
1261 }
1262
1263 radius_cui = sta->radius_cui;
1264 len = os_strlen(radius_cui);
1265 *buf = (u8 *) radius_cui;
1266
1267 return len;
1268 }
1269
1270
hostapd_wpa_auth_set_session_timeout(void * ctx,const u8 * sta_addr,int session_timeout)1271 static void hostapd_wpa_auth_set_session_timeout(void *ctx, const u8 *sta_addr,
1272 int session_timeout)
1273 {
1274 struct hostapd_data *hapd = ctx;
1275 struct sta_info *sta;
1276
1277 sta = ap_get_sta(hapd, sta_addr);
1278 if (!sta)
1279 return;
1280
1281 if (session_timeout) {
1282 os_get_reltime(&sta->session_timeout);
1283 sta->session_timeout.sec += session_timeout;
1284 sta->session_timeout_set = 1;
1285 ap_sta_session_timeout(hapd, sta, session_timeout);
1286 } else {
1287 sta->session_timeout_set = 0;
1288 ap_sta_no_session_timeout(hapd, sta);
1289 }
1290 }
1291
1292
hostapd_wpa_auth_get_session_timeout(void * ctx,const u8 * sta_addr)1293 static int hostapd_wpa_auth_get_session_timeout(void *ctx, const u8 *sta_addr)
1294 {
1295 struct hostapd_data *hapd = ctx;
1296 struct sta_info *sta;
1297 struct os_reltime now, remaining;
1298
1299 sta = ap_get_sta(hapd, sta_addr);
1300 if (!sta || !sta->session_timeout_set)
1301 return 0;
1302
1303 os_get_reltime(&now);
1304 if (os_reltime_before(&sta->session_timeout, &now)) {
1305 /* already expired, return >0 as timeout was set */
1306 return 1;
1307 }
1308
1309 os_reltime_sub(&sta->session_timeout, &now, &remaining);
1310
1311 return (remaining.sec > 0) ? remaining.sec : 1;
1312 }
1313
1314
hostapd_rrb_receive(void * ctx,const u8 * src_addr,const u8 * buf,size_t len)1315 static void hostapd_rrb_receive(void *ctx, const u8 *src_addr, const u8 *buf,
1316 size_t len)
1317 {
1318 struct hostapd_data *hapd = ctx;
1319 struct l2_ethhdr *ethhdr;
1320 if (len < sizeof(*ethhdr))
1321 return;
1322 ethhdr = (struct l2_ethhdr *) buf;
1323 wpa_printf(MSG_DEBUG, "FT: RRB received packet " MACSTR " -> "
1324 MACSTR, MAC2STR(ethhdr->h_source), MAC2STR(ethhdr->h_dest));
1325 if (!is_multicast_ether_addr(ethhdr->h_dest) &&
1326 os_memcmp(hapd->own_addr, ethhdr->h_dest, ETH_ALEN) != 0)
1327 return;
1328 wpa_ft_rrb_rx(hapd->wpa_auth, ethhdr->h_source, buf + sizeof(*ethhdr),
1329 len - sizeof(*ethhdr));
1330 }
1331
1332
hostapd_rrb_oui_receive(void * ctx,const u8 * src_addr,const u8 * dst_addr,u8 oui_suffix,const u8 * buf,size_t len)1333 static void hostapd_rrb_oui_receive(void *ctx, const u8 *src_addr,
1334 const u8 *dst_addr, u8 oui_suffix,
1335 const u8 *buf, size_t len)
1336 {
1337 struct hostapd_data *hapd = ctx;
1338
1339 wpa_printf(MSG_DEBUG, "FT: RRB received packet " MACSTR " -> "
1340 MACSTR, MAC2STR(src_addr), MAC2STR(dst_addr));
1341 if (!is_multicast_ether_addr(dst_addr) &&
1342 os_memcmp(hapd->own_addr, dst_addr, ETH_ALEN) != 0)
1343 return;
1344 wpa_ft_rrb_oui_rx(hapd->wpa_auth, src_addr, dst_addr, oui_suffix, buf,
1345 len);
1346 }
1347
1348
hostapd_wpa_auth_add_tspec(void * ctx,const u8 * sta_addr,u8 * tspec_ie,size_t tspec_ielen)1349 static int hostapd_wpa_auth_add_tspec(void *ctx, const u8 *sta_addr,
1350 u8 *tspec_ie, size_t tspec_ielen)
1351 {
1352 struct hostapd_data *hapd = ctx;
1353 return hostapd_add_tspec(hapd, sta_addr, tspec_ie, tspec_ielen);
1354 }
1355
1356
1357
hostapd_wpa_register_ft_oui(struct hostapd_data * hapd,const char * ft_iface)1358 static int hostapd_wpa_register_ft_oui(struct hostapd_data *hapd,
1359 const char *ft_iface)
1360 {
1361 hapd->oui_pull = eth_p_oui_register(hapd, ft_iface,
1362 FT_PACKET_R0KH_R1KH_PULL,
1363 hostapd_rrb_oui_receive, hapd);
1364 if (!hapd->oui_pull)
1365 return -1;
1366
1367 hapd->oui_resp = eth_p_oui_register(hapd, ft_iface,
1368 FT_PACKET_R0KH_R1KH_RESP,
1369 hostapd_rrb_oui_receive, hapd);
1370 if (!hapd->oui_resp)
1371 return -1;
1372
1373 hapd->oui_push = eth_p_oui_register(hapd, ft_iface,
1374 FT_PACKET_R0KH_R1KH_PUSH,
1375 hostapd_rrb_oui_receive, hapd);
1376 if (!hapd->oui_push)
1377 return -1;
1378
1379 hapd->oui_sreq = eth_p_oui_register(hapd, ft_iface,
1380 FT_PACKET_R0KH_R1KH_SEQ_REQ,
1381 hostapd_rrb_oui_receive, hapd);
1382 if (!hapd->oui_sreq)
1383 return -1;
1384
1385 hapd->oui_sresp = eth_p_oui_register(hapd, ft_iface,
1386 FT_PACKET_R0KH_R1KH_SEQ_RESP,
1387 hostapd_rrb_oui_receive, hapd);
1388 if (!hapd->oui_sresp)
1389 return -1;
1390
1391 return 0;
1392 }
1393
1394
hostapd_wpa_unregister_ft_oui(struct hostapd_data * hapd)1395 static void hostapd_wpa_unregister_ft_oui(struct hostapd_data *hapd)
1396 {
1397 eth_p_oui_unregister(hapd->oui_pull);
1398 hapd->oui_pull = NULL;
1399 eth_p_oui_unregister(hapd->oui_resp);
1400 hapd->oui_resp = NULL;
1401 eth_p_oui_unregister(hapd->oui_push);
1402 hapd->oui_push = NULL;
1403 eth_p_oui_unregister(hapd->oui_sreq);
1404 hapd->oui_sreq = NULL;
1405 eth_p_oui_unregister(hapd->oui_sresp);
1406 hapd->oui_sresp = NULL;
1407 }
1408 #endif /* CONFIG_IEEE80211R_AP */
1409
1410
hostapd_setup_wpa(struct hostapd_data * hapd)1411 int hostapd_setup_wpa(struct hostapd_data *hapd)
1412 {
1413 struct wpa_auth_config _conf;
1414 static const struct wpa_auth_callbacks cb = {
1415 .logger = hostapd_wpa_auth_logger,
1416 .disconnect = hostapd_wpa_auth_disconnect,
1417 .mic_failure_report = hostapd_wpa_auth_mic_failure_report,
1418 .psk_failure_report = hostapd_wpa_auth_psk_failure_report,
1419 .set_eapol = hostapd_wpa_auth_set_eapol,
1420 .get_eapol = hostapd_wpa_auth_get_eapol,
1421 .get_psk = hostapd_wpa_auth_get_psk,
1422 .get_msk = hostapd_wpa_auth_get_msk,
1423 .set_key = hostapd_wpa_auth_set_key,
1424 .get_seqnum = hostapd_wpa_auth_get_seqnum,
1425 .send_eapol = hostapd_wpa_auth_send_eapol,
1426 .for_each_sta = hostapd_wpa_auth_for_each_sta,
1427 .for_each_auth = hostapd_wpa_auth_for_each_auth,
1428 .send_ether = hostapd_wpa_auth_send_ether,
1429 .send_oui = hostapd_wpa_auth_send_oui,
1430 .channel_info = hostapd_channel_info,
1431 .update_vlan = hostapd_wpa_auth_update_vlan,
1432 #ifdef CONFIG_OCV
1433 .get_sta_tx_params = hostapd_get_sta_tx_params,
1434 #endif /* CONFIG_OCV */
1435 #ifdef CONFIG_IEEE80211R_AP
1436 .send_ft_action = hostapd_wpa_auth_send_ft_action,
1437 .add_sta = hostapd_wpa_auth_add_sta,
1438 .add_sta_ft = hostapd_wpa_auth_add_sta_ft,
1439 .add_tspec = hostapd_wpa_auth_add_tspec,
1440 .set_vlan = hostapd_wpa_auth_set_vlan,
1441 .get_vlan = hostapd_wpa_auth_get_vlan,
1442 .set_identity = hostapd_wpa_auth_set_identity,
1443 .get_identity = hostapd_wpa_auth_get_identity,
1444 .set_radius_cui = hostapd_wpa_auth_set_radius_cui,
1445 .get_radius_cui = hostapd_wpa_auth_get_radius_cui,
1446 .set_session_timeout = hostapd_wpa_auth_set_session_timeout,
1447 .get_session_timeout = hostapd_wpa_auth_get_session_timeout,
1448 #endif /* CONFIG_IEEE80211R_AP */
1449 };
1450 const u8 *wpa_ie;
1451 size_t wpa_ie_len;
1452
1453 hostapd_wpa_auth_conf(hapd->conf, hapd->iconf, &_conf);
1454 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_EAPOL_TX_STATUS)
1455 _conf.tx_status = 1;
1456 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_MLME)
1457 _conf.ap_mlme = 1;
1458
1459 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED) &&
1460 (hapd->conf->wpa_deny_ptk0_rekey == PTK0_REKEY_ALLOW_NEVER ||
1461 (hapd->conf->wpa_deny_ptk0_rekey == PTK0_REKEY_ALLOW_LOCAL_OK &&
1462 !(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_SAFE_PTK0_REKEYS)))) {
1463 wpa_msg(hapd->msg_ctx, MSG_INFO,
1464 "Disable PTK0 rekey support - replaced with disconnect");
1465 _conf.wpa_deny_ptk0_rekey = 1;
1466 }
1467
1468 if (_conf.extended_key_id &&
1469 (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_EXTENDED_KEY_ID))
1470 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Extended Key ID supported");
1471 else
1472 _conf.extended_key_id = 0;
1473
1474 hapd->wpa_auth = wpa_init(hapd->own_addr, &_conf, &cb, hapd);
1475 if (hapd->wpa_auth == NULL) {
1476 wpa_printf(MSG_ERROR, "WPA initialization failed.");
1477 return -1;
1478 }
1479
1480 if (hostapd_set_privacy(hapd, 1)) {
1481 wpa_printf(MSG_ERROR, "Could not set PrivacyInvoked "
1482 "for interface %s", hapd->conf->iface);
1483 return -1;
1484 }
1485
1486 wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
1487 if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) {
1488 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
1489 "the kernel driver.");
1490 return -1;
1491 }
1492
1493 if (rsn_preauth_iface_init(hapd)) {
1494 wpa_printf(MSG_ERROR, "Initialization of RSN "
1495 "pre-authentication failed.");
1496 return -1;
1497 }
1498
1499 #ifdef CONFIG_IEEE80211R_AP
1500 if (!hostapd_drv_none(hapd) &&
1501 wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt)) {
1502 const char *ft_iface;
1503
1504 ft_iface = hapd->conf->bridge[0] ? hapd->conf->bridge :
1505 hapd->conf->iface;
1506 hapd->l2 = l2_packet_init(ft_iface, NULL, ETH_P_RRB,
1507 hostapd_rrb_receive, hapd, 1);
1508 if (!hapd->l2) {
1509 wpa_printf(MSG_ERROR, "Failed to open l2_packet "
1510 "interface");
1511 return -1;
1512 }
1513
1514 if (hostapd_wpa_register_ft_oui(hapd, ft_iface)) {
1515 wpa_printf(MSG_ERROR,
1516 "Failed to open ETH_P_OUI interface");
1517 return -1;
1518 }
1519 }
1520 #endif /* CONFIG_IEEE80211R_AP */
1521
1522 return 0;
1523
1524 }
1525
1526
hostapd_reconfig_wpa(struct hostapd_data * hapd)1527 void hostapd_reconfig_wpa(struct hostapd_data *hapd)
1528 {
1529 struct wpa_auth_config wpa_auth_conf;
1530 hostapd_wpa_auth_conf(hapd->conf, hapd->iconf, &wpa_auth_conf);
1531 wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
1532 }
1533
1534
hostapd_deinit_wpa(struct hostapd_data * hapd)1535 void hostapd_deinit_wpa(struct hostapd_data *hapd)
1536 {
1537 ieee80211_tkip_countermeasures_deinit(hapd);
1538 rsn_preauth_iface_deinit(hapd);
1539 if (hapd->wpa_auth) {
1540 wpa_deinit(hapd->wpa_auth);
1541 hapd->wpa_auth = NULL;
1542
1543 if (hapd->drv_priv && hostapd_set_privacy(hapd, 0)) {
1544 wpa_printf(MSG_DEBUG, "Could not disable "
1545 "PrivacyInvoked for interface %s",
1546 hapd->conf->iface);
1547 }
1548
1549 if (hapd->drv_priv &&
1550 hostapd_set_generic_elem(hapd, (u8 *) "", 0)) {
1551 wpa_printf(MSG_DEBUG, "Could not remove generic "
1552 "information element from interface %s",
1553 hapd->conf->iface);
1554 }
1555 }
1556 ieee802_1x_deinit(hapd);
1557
1558 #ifdef CONFIG_IEEE80211R_AP
1559 eloop_cancel_timeout(hostapd_wpa_ft_rrb_rx_later, hapd, ELOOP_ALL_CTX);
1560 hostapd_wpa_ft_rrb_rx_later(hapd, NULL); /* flush without delivering */
1561 eloop_cancel_timeout(hostapd_oui_deliver_later, hapd, ELOOP_ALL_CTX);
1562 hostapd_oui_deliver_later(hapd, NULL); /* flush without delivering */
1563 l2_packet_deinit(hapd->l2);
1564 hapd->l2 = NULL;
1565 hostapd_wpa_unregister_ft_oui(hapd);
1566 #endif /* CONFIG_IEEE80211R_AP */
1567 }
1568