2 * hostapd / WPA authenticator glue code
3 * Copyright (c) 2002-2012, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
9 #include "utils/includes.h"
11 #include "utils/common.h"
12 #include "common/ieee802_11_defs.h"
13 #include "common/sae.h"
14 #include "eapol_auth/eapol_auth_sm.h"
15 #include "eapol_auth/eapol_auth_sm_i.h"
16 #include "eap_server/eap.h"
17 #include "l2_packet/l2_packet.h"
18 #include "drivers/driver.h"
20 #include "ieee802_1x.h"
21 #include "preauth_auth.h"
23 #include "tkip_countermeasures.h"
24 #include "ap_drv_ops.h"
25 #include "ap_config.h"
27 #include "wpa_auth_glue.h"
30 static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf,
31 struct hostapd_config *iconf,
32 struct wpa_auth_config *wconf)
34 os_memset(wconf, 0, sizeof(*wconf));
35 wconf->wpa = conf->wpa;
36 wconf->wpa_key_mgmt = conf->wpa_key_mgmt;
37 wconf->wpa_pairwise = conf->wpa_pairwise;
38 wconf->wpa_group = conf->wpa_group;
39 wconf->wpa_group_rekey = conf->wpa_group_rekey;
40 wconf->wpa_strict_rekey = conf->wpa_strict_rekey;
41 wconf->wpa_gmk_rekey = conf->wpa_gmk_rekey;
42 wconf->wpa_ptk_rekey = conf->wpa_ptk_rekey;
43 wconf->rsn_pairwise = conf->rsn_pairwise;
44 wconf->rsn_preauth = conf->rsn_preauth;
45 wconf->eapol_version = conf->eapol_version;
46 wconf->peerkey = conf->peerkey;
47 wconf->wmm_enabled = conf->wmm_enabled;
48 wconf->wmm_uapsd = conf->wmm_uapsd;
49 wconf->disable_pmksa_caching = conf->disable_pmksa_caching;
50 wconf->okc = conf->okc;
51 #ifdef CONFIG_IEEE80211W
52 wconf->ieee80211w = conf->ieee80211w;
53 #endif /* CONFIG_IEEE80211W */
54 #ifdef CONFIG_IEEE80211R
55 wconf->ssid_len = conf->ssid.ssid_len;
56 if (wconf->ssid_len > SSID_LEN)
57 wconf->ssid_len = SSID_LEN;
58 os_memcpy(wconf->ssid, conf->ssid.ssid, wconf->ssid_len);
59 os_memcpy(wconf->mobility_domain, conf->mobility_domain,
60 MOBILITY_DOMAIN_ID_LEN);
61 if (conf->nas_identifier &&
62 os_strlen(conf->nas_identifier) <= FT_R0KH_ID_MAX_LEN) {
63 wconf->r0_key_holder_len = os_strlen(conf->nas_identifier);
64 os_memcpy(wconf->r0_key_holder, conf->nas_identifier,
65 wconf->r0_key_holder_len);
67 os_memcpy(wconf->r1_key_holder, conf->r1_key_holder, FT_R1KH_ID_LEN);
68 wconf->r0_key_lifetime = conf->r0_key_lifetime;
69 wconf->reassociation_deadline = conf->reassociation_deadline;
70 wconf->r0kh_list = conf->r0kh_list;
71 wconf->r1kh_list = conf->r1kh_list;
72 wconf->pmk_r1_push = conf->pmk_r1_push;
73 wconf->ft_over_ds = conf->ft_over_ds;
74 #endif /* CONFIG_IEEE80211R */
76 wconf->disable_gtk = conf->disable_dgaf;
77 #endif /* CONFIG_HS20 */
78 #ifdef CONFIG_TESTING_OPTIONS
79 wconf->corrupt_gtk_rekey_mic_probability =
80 iconf->corrupt_gtk_rekey_mic_probability;
81 #endif /* CONFIG_TESTING_OPTIONS */
85 static void hostapd_wpa_auth_logger(void *ctx, const u8 *addr,
86 logger_level level, const char *txt)
88 #ifndef CONFIG_NO_HOSTAPD_LOGGER
89 struct hostapd_data *hapd = ctx;
94 hlevel = HOSTAPD_LEVEL_WARNING;
97 hlevel = HOSTAPD_LEVEL_INFO;
101 hlevel = HOSTAPD_LEVEL_DEBUG;
105 hostapd_logger(hapd, addr, HOSTAPD_MODULE_WPA, hlevel, "%s", txt);
106 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
110 static void hostapd_wpa_auth_disconnect(void *ctx, const u8 *addr,
113 struct hostapd_data *hapd = ctx;
114 wpa_printf(MSG_DEBUG, "%s: WPA authenticator requests disconnect: "
115 "STA " MACSTR " reason %d",
116 __func__, MAC2STR(addr), reason);
117 ap_sta_disconnect(hapd, NULL, addr, reason);
121 static int hostapd_wpa_auth_mic_failure_report(void *ctx, const u8 *addr)
123 struct hostapd_data *hapd = ctx;
124 return michael_mic_failure(hapd, addr, 0);
128 static void hostapd_wpa_auth_set_eapol(void *ctx, const u8 *addr,
129 wpa_eapol_variable var, int value)
131 struct hostapd_data *hapd = ctx;
132 struct sta_info *sta = ap_get_sta(hapd, addr);
136 case WPA_EAPOL_portEnabled:
137 ieee802_1x_notify_port_enabled(sta->eapol_sm, value);
139 case WPA_EAPOL_portValid:
140 ieee802_1x_notify_port_valid(sta->eapol_sm, value);
142 case WPA_EAPOL_authorized:
143 ieee802_1x_set_sta_authorized(hapd, sta, value);
145 case WPA_EAPOL_portControl_Auto:
147 sta->eapol_sm->portControl = Auto;
149 case WPA_EAPOL_keyRun:
151 sta->eapol_sm->keyRun = value ? TRUE : FALSE;
153 case WPA_EAPOL_keyAvailable:
155 sta->eapol_sm->eap_if->eapKeyAvailable =
156 value ? TRUE : FALSE;
158 case WPA_EAPOL_keyDone:
160 sta->eapol_sm->keyDone = value ? TRUE : FALSE;
162 case WPA_EAPOL_inc_EapolFramesTx:
164 sta->eapol_sm->dot1xAuthEapolFramesTx++;
170 static int hostapd_wpa_auth_get_eapol(void *ctx, const u8 *addr,
171 wpa_eapol_variable var)
173 struct hostapd_data *hapd = ctx;
174 struct sta_info *sta = ap_get_sta(hapd, addr);
175 if (sta == NULL || sta->eapol_sm == NULL)
178 case WPA_EAPOL_keyRun:
179 return sta->eapol_sm->keyRun;
180 case WPA_EAPOL_keyAvailable:
181 return sta->eapol_sm->eap_if->eapKeyAvailable;
188 static const u8 * hostapd_wpa_auth_get_psk(void *ctx, const u8 *addr,
191 struct hostapd_data *hapd = ctx;
192 struct sta_info *sta = ap_get_sta(hapd, addr);
196 if (sta && sta->auth_alg == WLAN_AUTH_SAE) {
197 if (!sta->sae || prev_psk)
199 return sta->sae->pmk;
201 #endif /* CONFIG_SAE */
203 psk = hostapd_get_psk(hapd->conf, addr, prev_psk);
205 * This is about to iterate over all psks, prev_psk gives the last
206 * returned psk which should not be returned again.
207 * logic list (all hostapd_get_psk; all sta->psk)
209 if (sta && sta->psk && !psk) {
210 struct hostapd_sta_wpa_psk_short *pos;
212 for (pos = sta->psk; pos; pos = pos->next) {
213 if (pos->psk == prev_psk) {
214 psk = pos->next ? pos->next->psk : NULL;
223 static int hostapd_wpa_auth_get_msk(void *ctx, const u8 *addr, u8 *msk,
226 struct hostapd_data *hapd = ctx;
229 struct sta_info *sta;
231 sta = ap_get_sta(hapd, addr);
235 key = ieee802_1x_get_key(sta->eapol_sm, &keylen);
241 os_memcpy(msk, key, keylen);
248 static int hostapd_wpa_auth_set_key(void *ctx, int vlan_id, enum wpa_alg alg,
249 const u8 *addr, int idx, u8 *key,
252 struct hostapd_data *hapd = ctx;
253 const char *ifname = hapd->conf->iface;
256 ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
261 return hostapd_drv_set_key(ifname, hapd, alg, addr, idx, 1, NULL, 0,
266 static int hostapd_wpa_auth_get_seqnum(void *ctx, const u8 *addr, int idx,
269 struct hostapd_data *hapd = ctx;
270 return hostapd_get_seqnum(hapd->conf->iface, hapd, addr, idx, seq);
274 static int hostapd_wpa_auth_send_eapol(void *ctx, const u8 *addr,
275 const u8 *data, size_t data_len,
278 struct hostapd_data *hapd = ctx;
279 struct sta_info *sta;
282 sta = ap_get_sta(hapd, addr);
284 flags = hostapd_sta_flags_to_drv(sta->flags);
286 return hostapd_drv_hapd_send_eapol(hapd, addr, data, data_len,
291 static int hostapd_wpa_auth_for_each_sta(
292 void *ctx, int (*cb)(struct wpa_state_machine *sm, void *ctx),
295 struct hostapd_data *hapd = ctx;
296 struct sta_info *sta;
298 for (sta = hapd->sta_list; sta; sta = sta->next) {
299 if (sta->wpa_sm && cb(sta->wpa_sm, cb_ctx))
306 struct wpa_auth_iface_iter_data {
307 int (*cb)(struct wpa_authenticator *sm, void *ctx);
311 static int wpa_auth_iface_iter(struct hostapd_iface *iface, void *ctx)
313 struct wpa_auth_iface_iter_data *data = ctx;
315 for (i = 0; i < iface->num_bss; i++) {
316 if (iface->bss[i]->wpa_auth &&
317 data->cb(iface->bss[i]->wpa_auth, data->cb_ctx))
324 static int hostapd_wpa_auth_for_each_auth(
325 void *ctx, int (*cb)(struct wpa_authenticator *sm, void *ctx),
328 struct hostapd_data *hapd = ctx;
329 struct wpa_auth_iface_iter_data data;
330 if (hapd->iface->interfaces == NULL ||
331 hapd->iface->interfaces->for_each_interface == NULL)
334 data.cb_ctx = cb_ctx;
335 return hapd->iface->interfaces->for_each_interface(
336 hapd->iface->interfaces, wpa_auth_iface_iter, &data);
340 #ifdef CONFIG_IEEE80211R
342 struct wpa_auth_ft_iface_iter_data {
343 struct hostapd_data *src_hapd;
350 static int hostapd_wpa_auth_ft_iter(struct hostapd_iface *iface, void *ctx)
352 struct wpa_auth_ft_iface_iter_data *idata = ctx;
353 struct hostapd_data *hapd;
356 for (j = 0; j < iface->num_bss; j++) {
357 hapd = iface->bss[j];
358 if (hapd == idata->src_hapd)
360 if (os_memcmp(hapd->own_addr, idata->dst, ETH_ALEN) == 0) {
361 wpa_printf(MSG_DEBUG, "FT: Send RRB data directly to "
362 "locally managed BSS " MACSTR "@%s -> "
364 MAC2STR(idata->src_hapd->own_addr),
365 idata->src_hapd->conf->iface,
366 MAC2STR(hapd->own_addr), hapd->conf->iface);
367 wpa_ft_rrb_rx(hapd->wpa_auth,
368 idata->src_hapd->own_addr,
369 idata->data, idata->data_len);
377 #endif /* CONFIG_IEEE80211R */
380 static int hostapd_wpa_auth_send_ether(void *ctx, const u8 *dst, u16 proto,
381 const u8 *data, size_t data_len)
383 struct hostapd_data *hapd = ctx;
384 struct l2_ethhdr *buf;
387 #ifdef CONFIG_IEEE80211R
388 if (proto == ETH_P_RRB && hapd->iface->interfaces &&
389 hapd->iface->interfaces->for_each_interface) {
391 struct wpa_auth_ft_iface_iter_data idata;
392 idata.src_hapd = hapd;
395 idata.data_len = data_len;
396 res = hapd->iface->interfaces->for_each_interface(
397 hapd->iface->interfaces, hostapd_wpa_auth_ft_iter,
402 #endif /* CONFIG_IEEE80211R */
404 if (hapd->driver && hapd->driver->send_ether)
405 return hapd->driver->send_ether(hapd->drv_priv, dst,
406 hapd->own_addr, proto,
408 if (hapd->l2 == NULL)
411 buf = os_malloc(sizeof(*buf) + data_len);
414 os_memcpy(buf->h_dest, dst, ETH_ALEN);
415 os_memcpy(buf->h_source, hapd->own_addr, ETH_ALEN);
416 buf->h_proto = host_to_be16(proto);
417 os_memcpy(buf + 1, data, data_len);
418 ret = l2_packet_send(hapd->l2, dst, proto, (u8 *) buf,
419 sizeof(*buf) + data_len);
425 #ifdef CONFIG_IEEE80211R
427 static int hostapd_wpa_auth_send_ft_action(void *ctx, const u8 *dst,
428 const u8 *data, size_t data_len)
430 struct hostapd_data *hapd = ctx;
432 struct ieee80211_mgmt *m;
434 struct sta_info *sta;
436 sta = ap_get_sta(hapd, dst);
437 if (sta == NULL || sta->wpa_sm == NULL)
440 m = os_zalloc(sizeof(*m) + data_len);
443 mlen = ((u8 *) &m->u - (u8 *) m) + data_len;
444 m->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
445 WLAN_FC_STYPE_ACTION);
446 os_memcpy(m->da, dst, ETH_ALEN);
447 os_memcpy(m->sa, hapd->own_addr, ETH_ALEN);
448 os_memcpy(m->bssid, hapd->own_addr, ETH_ALEN);
449 os_memcpy(&m->u, data, data_len);
451 res = hostapd_drv_send_mlme(hapd, (u8 *) m, mlen, 0);
457 static struct wpa_state_machine *
458 hostapd_wpa_auth_add_sta(void *ctx, const u8 *sta_addr)
460 struct hostapd_data *hapd = ctx;
461 struct sta_info *sta;
463 if (hostapd_add_sta_node(hapd, sta_addr, WLAN_AUTH_FT) < 0)
466 sta = ap_sta_add(hapd, sta_addr);
470 sta->auth_alg = WLAN_AUTH_FT;
474 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr);
475 if (sta->wpa_sm == NULL) {
476 ap_free_sta(hapd, sta);
479 sta->auth_alg = WLAN_AUTH_FT;
485 static void hostapd_rrb_receive(void *ctx, const u8 *src_addr, const u8 *buf,
488 struct hostapd_data *hapd = ctx;
489 struct l2_ethhdr *ethhdr;
490 if (len < sizeof(*ethhdr))
492 ethhdr = (struct l2_ethhdr *) buf;
493 wpa_printf(MSG_DEBUG, "FT: RRB received packet " MACSTR " -> "
494 MACSTR, MAC2STR(ethhdr->h_source), MAC2STR(ethhdr->h_dest));
495 wpa_ft_rrb_rx(hapd->wpa_auth, ethhdr->h_source, buf + sizeof(*ethhdr),
496 len - sizeof(*ethhdr));
500 static int hostapd_wpa_auth_add_tspec(void *ctx, const u8 *sta_addr,
501 u8 *tspec_ie, size_t tspec_ielen)
503 struct hostapd_data *hapd = ctx;
504 return hostapd_add_tspec(hapd, sta_addr, tspec_ie, tspec_ielen);
507 #endif /* CONFIG_IEEE80211R */
510 int hostapd_setup_wpa(struct hostapd_data *hapd)
512 struct wpa_auth_config _conf;
513 struct wpa_auth_callbacks cb;
517 hostapd_wpa_auth_conf(hapd->conf, hapd->iconf, &_conf);
518 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_EAPOL_TX_STATUS)
520 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_MLME)
522 os_memset(&cb, 0, sizeof(cb));
524 cb.logger = hostapd_wpa_auth_logger;
525 cb.disconnect = hostapd_wpa_auth_disconnect;
526 cb.mic_failure_report = hostapd_wpa_auth_mic_failure_report;
527 cb.set_eapol = hostapd_wpa_auth_set_eapol;
528 cb.get_eapol = hostapd_wpa_auth_get_eapol;
529 cb.get_psk = hostapd_wpa_auth_get_psk;
530 cb.get_msk = hostapd_wpa_auth_get_msk;
531 cb.set_key = hostapd_wpa_auth_set_key;
532 cb.get_seqnum = hostapd_wpa_auth_get_seqnum;
533 cb.send_eapol = hostapd_wpa_auth_send_eapol;
534 cb.for_each_sta = hostapd_wpa_auth_for_each_sta;
535 cb.for_each_auth = hostapd_wpa_auth_for_each_auth;
536 cb.send_ether = hostapd_wpa_auth_send_ether;
537 #ifdef CONFIG_IEEE80211R
538 cb.send_ft_action = hostapd_wpa_auth_send_ft_action;
539 cb.add_sta = hostapd_wpa_auth_add_sta;
540 cb.add_tspec = hostapd_wpa_auth_add_tspec;
541 #endif /* CONFIG_IEEE80211R */
542 hapd->wpa_auth = wpa_init(hapd->own_addr, &_conf, &cb);
543 if (hapd->wpa_auth == NULL) {
544 wpa_printf(MSG_ERROR, "WPA initialization failed.");
548 if (hostapd_set_privacy(hapd, 1)) {
549 wpa_printf(MSG_ERROR, "Could not set PrivacyInvoked "
550 "for interface %s", hapd->conf->iface);
554 wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
555 if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) {
556 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
557 "the kernel driver.");
561 if (rsn_preauth_iface_init(hapd)) {
562 wpa_printf(MSG_ERROR, "Initialization of RSN "
563 "pre-authentication failed.");
567 #ifdef CONFIG_IEEE80211R
568 if (!hostapd_drv_none(hapd)) {
569 hapd->l2 = l2_packet_init(hapd->conf->bridge[0] ?
571 hapd->conf->iface, NULL, ETH_P_RRB,
572 hostapd_rrb_receive, hapd, 1);
573 if (hapd->l2 == NULL &&
574 (hapd->driver == NULL ||
575 hapd->driver->send_ether == NULL)) {
576 wpa_printf(MSG_ERROR, "Failed to open l2_packet "
581 #endif /* CONFIG_IEEE80211R */
588 void hostapd_reconfig_wpa(struct hostapd_data *hapd)
590 struct wpa_auth_config wpa_auth_conf;
591 hostapd_wpa_auth_conf(hapd->conf, hapd->iconf, &wpa_auth_conf);
592 wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
596 void hostapd_deinit_wpa(struct hostapd_data *hapd)
598 ieee80211_tkip_countermeasures_deinit(hapd);
599 rsn_preauth_iface_deinit(hapd);
600 if (hapd->wpa_auth) {
601 wpa_deinit(hapd->wpa_auth);
602 hapd->wpa_auth = NULL;
604 if (hostapd_set_privacy(hapd, 0)) {
605 wpa_printf(MSG_DEBUG, "Could not disable "
606 "PrivacyInvoked for interface %s",
610 if (hostapd_set_generic_elem(hapd, (u8 *) "", 0)) {
611 wpa_printf(MSG_DEBUG, "Could not remove generic "
612 "information element from interface %s",
616 ieee802_1x_deinit(hapd);
618 #ifdef CONFIG_IEEE80211R
619 l2_packet_deinit(hapd->l2);
620 #endif /* CONFIG_IEEE80211R */