2 * hostapd / WPA authenticator glue code
3 * Copyright (c) 2002-2011, 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 "eapol_auth/eapol_auth_sm.h"
14 #include "eapol_auth/eapol_auth_sm_i.h"
15 #include "eap_server/eap.h"
16 #include "l2_packet/l2_packet.h"
17 #include "drivers/driver.h"
19 #include "ieee802_1x.h"
20 #include "preauth_auth.h"
22 #include "tkip_countermeasures.h"
23 #include "ap_drv_ops.h"
24 #include "ap_config.h"
26 #include "wpa_auth_glue.h"
29 static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf,
30 struct wpa_auth_config *wconf)
32 os_memset(wconf, 0, sizeof(*wconf));
33 wconf->wpa = conf->wpa;
34 wconf->wpa_key_mgmt = conf->wpa_key_mgmt;
35 wconf->wpa_pairwise = conf->wpa_pairwise;
36 wconf->wpa_group = conf->wpa_group;
37 wconf->wpa_group_rekey = conf->wpa_group_rekey;
38 wconf->wpa_strict_rekey = conf->wpa_strict_rekey;
39 wconf->wpa_gmk_rekey = conf->wpa_gmk_rekey;
40 wconf->wpa_ptk_rekey = conf->wpa_ptk_rekey;
41 wconf->rsn_pairwise = conf->rsn_pairwise;
42 wconf->rsn_preauth = conf->rsn_preauth;
43 wconf->eapol_version = conf->eapol_version;
44 wconf->peerkey = conf->peerkey;
45 wconf->wmm_enabled = conf->wmm_enabled;
46 wconf->wmm_uapsd = conf->wmm_uapsd;
47 wconf->disable_pmksa_caching = conf->disable_pmksa_caching;
48 wconf->okc = conf->okc;
49 #ifdef CONFIG_IEEE80211W
50 wconf->ieee80211w = conf->ieee80211w;
51 #endif /* CONFIG_IEEE80211W */
52 #ifdef CONFIG_IEEE80211R
53 wconf->ssid_len = conf->ssid.ssid_len;
54 if (wconf->ssid_len > SSID_LEN)
55 wconf->ssid_len = SSID_LEN;
56 os_memcpy(wconf->ssid, conf->ssid.ssid, wconf->ssid_len);
57 os_memcpy(wconf->mobility_domain, conf->mobility_domain,
58 MOBILITY_DOMAIN_ID_LEN);
59 if (conf->nas_identifier &&
60 os_strlen(conf->nas_identifier) <= FT_R0KH_ID_MAX_LEN) {
61 wconf->r0_key_holder_len = os_strlen(conf->nas_identifier);
62 os_memcpy(wconf->r0_key_holder, conf->nas_identifier,
63 wconf->r0_key_holder_len);
65 os_memcpy(wconf->r1_key_holder, conf->r1_key_holder, FT_R1KH_ID_LEN);
66 wconf->r0_key_lifetime = conf->r0_key_lifetime;
67 wconf->reassociation_deadline = conf->reassociation_deadline;
68 wconf->r0kh_list = conf->r0kh_list;
69 wconf->r1kh_list = conf->r1kh_list;
70 wconf->pmk_r1_push = conf->pmk_r1_push;
71 wconf->ft_over_ds = conf->ft_over_ds;
72 #endif /* CONFIG_IEEE80211R */
74 wconf->disable_gtk = conf->disable_dgaf;
75 #endif /* CONFIG_HS20 */
79 static void hostapd_wpa_auth_logger(void *ctx, const u8 *addr,
80 logger_level level, const char *txt)
82 #ifndef CONFIG_NO_HOSTAPD_LOGGER
83 struct hostapd_data *hapd = ctx;
88 hlevel = HOSTAPD_LEVEL_WARNING;
91 hlevel = HOSTAPD_LEVEL_INFO;
95 hlevel = HOSTAPD_LEVEL_DEBUG;
99 hostapd_logger(hapd, addr, HOSTAPD_MODULE_WPA, hlevel, "%s", txt);
100 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
104 static void hostapd_wpa_auth_disconnect(void *ctx, const u8 *addr,
107 struct hostapd_data *hapd = ctx;
108 wpa_printf(MSG_DEBUG, "%s: WPA authenticator requests disconnect: "
109 "STA " MACSTR " reason %d",
110 __func__, MAC2STR(addr), reason);
111 ap_sta_disconnect(hapd, NULL, addr, reason);
115 static int hostapd_wpa_auth_mic_failure_report(void *ctx, const u8 *addr)
117 struct hostapd_data *hapd = ctx;
118 return michael_mic_failure(hapd, addr, 0);
122 static void hostapd_wpa_auth_set_eapol(void *ctx, const u8 *addr,
123 wpa_eapol_variable var, int value)
125 struct hostapd_data *hapd = ctx;
126 struct sta_info *sta = ap_get_sta(hapd, addr);
130 case WPA_EAPOL_portEnabled:
131 ieee802_1x_notify_port_enabled(sta->eapol_sm, value);
133 case WPA_EAPOL_portValid:
134 ieee802_1x_notify_port_valid(sta->eapol_sm, value);
136 case WPA_EAPOL_authorized:
137 ieee802_1x_set_sta_authorized(hapd, sta, value);
139 case WPA_EAPOL_portControl_Auto:
141 sta->eapol_sm->portControl = Auto;
143 case WPA_EAPOL_keyRun:
145 sta->eapol_sm->keyRun = value ? TRUE : FALSE;
147 case WPA_EAPOL_keyAvailable:
149 sta->eapol_sm->eap_if->eapKeyAvailable =
150 value ? TRUE : FALSE;
152 case WPA_EAPOL_keyDone:
154 sta->eapol_sm->keyDone = value ? TRUE : FALSE;
156 case WPA_EAPOL_inc_EapolFramesTx:
158 sta->eapol_sm->dot1xAuthEapolFramesTx++;
164 static int hostapd_wpa_auth_get_eapol(void *ctx, const u8 *addr,
165 wpa_eapol_variable var)
167 struct hostapd_data *hapd = ctx;
168 struct sta_info *sta = ap_get_sta(hapd, addr);
169 if (sta == NULL || sta->eapol_sm == NULL)
172 case WPA_EAPOL_keyRun:
173 return sta->eapol_sm->keyRun;
174 case WPA_EAPOL_keyAvailable:
175 return sta->eapol_sm->eap_if->eapKeyAvailable;
182 static const u8 * hostapd_wpa_auth_get_psk(void *ctx, const u8 *addr,
185 struct hostapd_data *hapd = ctx;
186 struct sta_info *sta = ap_get_sta(hapd, addr);
187 const u8 *psk = hostapd_get_psk(hapd->conf, addr, prev_psk);
189 * This is about to iterate over all psks, prev_psk gives the last
190 * returned psk which should not be returned again.
191 * logic list (all hostapd_get_psk; all sta->psk)
193 if (sta && sta->psk && !psk) {
194 struct hostapd_sta_wpa_psk_short *pos;
196 for (pos = sta->psk; pos; pos = pos->next) {
197 if (pos->psk == prev_psk) {
198 psk = pos->next ? pos->next->psk : NULL;
207 static int hostapd_wpa_auth_get_msk(void *ctx, const u8 *addr, u8 *msk,
210 struct hostapd_data *hapd = ctx;
213 struct sta_info *sta;
215 sta = ap_get_sta(hapd, addr);
219 key = ieee802_1x_get_key(sta->eapol_sm, &keylen);
225 os_memcpy(msk, key, keylen);
232 static int hostapd_wpa_auth_set_key(void *ctx, int vlan_id, enum wpa_alg alg,
233 const u8 *addr, int idx, u8 *key,
236 struct hostapd_data *hapd = ctx;
237 const char *ifname = hapd->conf->iface;
240 ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
245 return hostapd_drv_set_key(ifname, hapd, alg, addr, idx, 1, NULL, 0,
250 static int hostapd_wpa_auth_get_seqnum(void *ctx, const u8 *addr, int idx,
253 struct hostapd_data *hapd = ctx;
254 return hostapd_get_seqnum(hapd->conf->iface, hapd, addr, idx, seq);
258 static int hostapd_wpa_auth_send_eapol(void *ctx, const u8 *addr,
259 const u8 *data, size_t data_len,
262 struct hostapd_data *hapd = ctx;
263 struct sta_info *sta;
266 sta = ap_get_sta(hapd, addr);
268 flags = hostapd_sta_flags_to_drv(sta->flags);
270 return hostapd_drv_hapd_send_eapol(hapd, addr, data, data_len,
275 static int hostapd_wpa_auth_for_each_sta(
276 void *ctx, int (*cb)(struct wpa_state_machine *sm, void *ctx),
279 struct hostapd_data *hapd = ctx;
280 struct sta_info *sta;
282 for (sta = hapd->sta_list; sta; sta = sta->next) {
283 if (sta->wpa_sm && cb(sta->wpa_sm, cb_ctx))
290 struct wpa_auth_iface_iter_data {
291 int (*cb)(struct wpa_authenticator *sm, void *ctx);
295 static int wpa_auth_iface_iter(struct hostapd_iface *iface, void *ctx)
297 struct wpa_auth_iface_iter_data *data = ctx;
299 for (i = 0; i < iface->num_bss; i++) {
300 if (iface->bss[i]->wpa_auth &&
301 data->cb(iface->bss[i]->wpa_auth, data->cb_ctx))
308 static int hostapd_wpa_auth_for_each_auth(
309 void *ctx, int (*cb)(struct wpa_authenticator *sm, void *ctx),
312 struct hostapd_data *hapd = ctx;
313 struct wpa_auth_iface_iter_data data;
314 if (hapd->iface->interfaces == NULL ||
315 hapd->iface->interfaces->for_each_interface == NULL)
318 data.cb_ctx = cb_ctx;
319 return hapd->iface->interfaces->for_each_interface(
320 hapd->iface->interfaces, wpa_auth_iface_iter, &data);
324 #ifdef CONFIG_IEEE80211R
326 struct wpa_auth_ft_iface_iter_data {
327 struct hostapd_data *src_hapd;
334 static int hostapd_wpa_auth_ft_iter(struct hostapd_iface *iface, void *ctx)
336 struct wpa_auth_ft_iface_iter_data *idata = ctx;
337 struct hostapd_data *hapd;
340 for (j = 0; j < iface->num_bss; j++) {
341 hapd = iface->bss[j];
342 if (hapd == idata->src_hapd)
344 if (os_memcmp(hapd->own_addr, idata->dst, ETH_ALEN) == 0) {
345 wpa_printf(MSG_DEBUG, "FT: Send RRB data directly to "
346 "locally managed BSS " MACSTR "@%s -> "
348 MAC2STR(idata->src_hapd->own_addr),
349 idata->src_hapd->conf->iface,
350 MAC2STR(hapd->own_addr), hapd->conf->iface);
351 wpa_ft_rrb_rx(hapd->wpa_auth,
352 idata->src_hapd->own_addr,
353 idata->data, idata->data_len);
361 #endif /* CONFIG_IEEE80211R */
364 static int hostapd_wpa_auth_send_ether(void *ctx, const u8 *dst, u16 proto,
365 const u8 *data, size_t data_len)
367 struct hostapd_data *hapd = ctx;
368 struct l2_ethhdr *buf;
371 #ifdef CONFIG_IEEE80211R
372 if (proto == ETH_P_RRB && hapd->iface->interfaces &&
373 hapd->iface->interfaces->for_each_interface) {
375 struct wpa_auth_ft_iface_iter_data idata;
376 idata.src_hapd = hapd;
379 idata.data_len = data_len;
380 res = hapd->iface->interfaces->for_each_interface(
381 hapd->iface->interfaces, hostapd_wpa_auth_ft_iter,
386 #endif /* CONFIG_IEEE80211R */
388 if (hapd->driver && hapd->driver->send_ether)
389 return hapd->driver->send_ether(hapd->drv_priv, dst,
390 hapd->own_addr, proto,
392 if (hapd->l2 == NULL)
395 buf = os_malloc(sizeof(*buf) + data_len);
398 os_memcpy(buf->h_dest, dst, ETH_ALEN);
399 os_memcpy(buf->h_source, hapd->own_addr, ETH_ALEN);
400 buf->h_proto = host_to_be16(proto);
401 os_memcpy(buf + 1, data, data_len);
402 ret = l2_packet_send(hapd->l2, dst, proto, (u8 *) buf,
403 sizeof(*buf) + data_len);
409 #ifdef CONFIG_IEEE80211R
411 static int hostapd_wpa_auth_send_ft_action(void *ctx, const u8 *dst,
412 const u8 *data, size_t data_len)
414 struct hostapd_data *hapd = ctx;
416 struct ieee80211_mgmt *m;
418 struct sta_info *sta;
420 sta = ap_get_sta(hapd, dst);
421 if (sta == NULL || sta->wpa_sm == NULL)
424 m = os_zalloc(sizeof(*m) + data_len);
427 mlen = ((u8 *) &m->u - (u8 *) m) + data_len;
428 m->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
429 WLAN_FC_STYPE_ACTION);
430 os_memcpy(m->da, dst, ETH_ALEN);
431 os_memcpy(m->sa, hapd->own_addr, ETH_ALEN);
432 os_memcpy(m->bssid, hapd->own_addr, ETH_ALEN);
433 os_memcpy(&m->u, data, data_len);
435 res = hostapd_drv_send_mlme(hapd, (u8 *) m, mlen, 0);
441 static struct wpa_state_machine *
442 hostapd_wpa_auth_add_sta(void *ctx, const u8 *sta_addr)
444 struct hostapd_data *hapd = ctx;
445 struct sta_info *sta;
447 if (hostapd_add_sta_node(hapd, sta_addr, WLAN_AUTH_FT) < 0)
450 sta = ap_sta_add(hapd, sta_addr);
454 sta->auth_alg = WLAN_AUTH_FT;
458 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr);
459 if (sta->wpa_sm == NULL) {
460 ap_free_sta(hapd, sta);
463 sta->auth_alg = WLAN_AUTH_FT;
469 static void hostapd_rrb_receive(void *ctx, const u8 *src_addr, const u8 *buf,
472 struct hostapd_data *hapd = ctx;
473 struct l2_ethhdr *ethhdr;
474 if (len < sizeof(*ethhdr))
476 ethhdr = (struct l2_ethhdr *) buf;
477 wpa_printf(MSG_DEBUG, "FT: RRB received packet " MACSTR " -> "
478 MACSTR, MAC2STR(ethhdr->h_source), MAC2STR(ethhdr->h_dest));
479 wpa_ft_rrb_rx(hapd->wpa_auth, ethhdr->h_source, buf + sizeof(*ethhdr),
480 len - sizeof(*ethhdr));
484 static int hostapd_wpa_auth_add_tspec(void *ctx, const u8 *sta_addr,
485 u8 *tspec_ie, size_t tspec_ielen)
487 struct hostapd_data *hapd = ctx;
488 return hostapd_add_tspec(hapd, sta_addr, tspec_ie, tspec_ielen);
491 #endif /* CONFIG_IEEE80211R */
494 int hostapd_setup_wpa(struct hostapd_data *hapd)
496 struct wpa_auth_config _conf;
497 struct wpa_auth_callbacks cb;
501 hostapd_wpa_auth_conf(hapd->conf, &_conf);
502 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_EAPOL_TX_STATUS)
504 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_MLME)
506 os_memset(&cb, 0, sizeof(cb));
508 cb.logger = hostapd_wpa_auth_logger;
509 cb.disconnect = hostapd_wpa_auth_disconnect;
510 cb.mic_failure_report = hostapd_wpa_auth_mic_failure_report;
511 cb.set_eapol = hostapd_wpa_auth_set_eapol;
512 cb.get_eapol = hostapd_wpa_auth_get_eapol;
513 cb.get_psk = hostapd_wpa_auth_get_psk;
514 cb.get_msk = hostapd_wpa_auth_get_msk;
515 cb.set_key = hostapd_wpa_auth_set_key;
516 cb.get_seqnum = hostapd_wpa_auth_get_seqnum;
517 cb.send_eapol = hostapd_wpa_auth_send_eapol;
518 cb.for_each_sta = hostapd_wpa_auth_for_each_sta;
519 cb.for_each_auth = hostapd_wpa_auth_for_each_auth;
520 cb.send_ether = hostapd_wpa_auth_send_ether;
521 #ifdef CONFIG_IEEE80211R
522 cb.send_ft_action = hostapd_wpa_auth_send_ft_action;
523 cb.add_sta = hostapd_wpa_auth_add_sta;
524 cb.add_tspec = hostapd_wpa_auth_add_tspec;
525 #endif /* CONFIG_IEEE80211R */
526 hapd->wpa_auth = wpa_init(hapd->own_addr, &_conf, &cb);
527 if (hapd->wpa_auth == NULL) {
528 wpa_printf(MSG_ERROR, "WPA initialization failed.");
532 if (hostapd_set_privacy(hapd, 1)) {
533 wpa_printf(MSG_ERROR, "Could not set PrivacyInvoked "
534 "for interface %s", hapd->conf->iface);
538 wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
539 if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) {
540 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
541 "the kernel driver.");
545 if (rsn_preauth_iface_init(hapd)) {
546 wpa_printf(MSG_ERROR, "Initialization of RSN "
547 "pre-authentication failed.");
551 #ifdef CONFIG_IEEE80211R
552 if (!hostapd_drv_none(hapd)) {
553 hapd->l2 = l2_packet_init(hapd->conf->bridge[0] ?
555 hapd->conf->iface, NULL, ETH_P_RRB,
556 hostapd_rrb_receive, hapd, 1);
557 if (hapd->l2 == NULL &&
558 (hapd->driver == NULL ||
559 hapd->driver->send_ether == NULL)) {
560 wpa_printf(MSG_ERROR, "Failed to open l2_packet "
565 #endif /* CONFIG_IEEE80211R */
572 void hostapd_reconfig_wpa(struct hostapd_data *hapd)
574 struct wpa_auth_config wpa_auth_conf;
575 hostapd_wpa_auth_conf(hapd->conf, &wpa_auth_conf);
576 wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
580 void hostapd_deinit_wpa(struct hostapd_data *hapd)
582 ieee80211_tkip_countermeasures_deinit(hapd);
583 rsn_preauth_iface_deinit(hapd);
584 if (hapd->wpa_auth) {
585 wpa_deinit(hapd->wpa_auth);
586 hapd->wpa_auth = NULL;
588 if (hostapd_set_privacy(hapd, 0)) {
589 wpa_printf(MSG_DEBUG, "Could not disable "
590 "PrivacyInvoked for interface %s",
594 if (hostapd_set_generic_elem(hapd, (u8 *) "", 0)) {
595 wpa_printf(MSG_DEBUG, "Could not remove generic "
596 "information element from interface %s",
600 ieee802_1x_deinit(hapd);
602 #ifdef CONFIG_IEEE80211R
603 l2_packet_deinit(hapd->l2);
604 #endif /* CONFIG_IEEE80211R */