2 * hostapd / Initialization and configuration
3 * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
19 #include "ieee802_1x.h"
21 #include "hw_features.h"
22 #include "accounting.h"
25 #include "ieee802_11_defs.h"
26 #include "ieee802_11_auth.h"
30 #include "radius/radius_client.h"
31 #include "radius/radius_server.h"
34 #include "vlan_init.h"
35 #include "ctrl_iface.h"
37 #include "eap_server/eap_sim_db.h"
38 #include "eap_server/eap.h"
39 #include "eap_server/tncs.h"
41 #include "l2_packet/l2_packet.h"
42 #include "wps_hostapd.h"
43 #include "tkip_countermeasures.h"
46 static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
47 size_t identity_len, int phase2,
48 struct eap_user *user);
49 static int hostapd_flush_old_stations(struct hostapd_data *hapd);
50 static int hostapd_setup_wpa(struct hostapd_data *hapd);
51 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
53 extern int wpa_debug_level;
57 static int hostapd_sim_db_cb_sta(struct hostapd_data *hapd,
58 struct sta_info *sta, void *ctx)
60 if (eapol_auth_eap_pending_cb(sta->eapol_sm, ctx) == 0)
66 static void hostapd_sim_db_cb(void *ctx, void *session_ctx)
68 struct hostapd_data *hapd = ctx;
69 if (ap_for_each_sta(hapd, hostapd_sim_db_cb_sta, session_ctx) == 0)
70 radius_server_eap_pending_cb(hapd->radius_srv, session_ctx);
72 #endif /* EAP_SERVER */
75 static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf,
76 struct wpa_auth_config *wconf)
78 wconf->wpa = conf->wpa;
79 wconf->wpa_key_mgmt = conf->wpa_key_mgmt;
80 wconf->wpa_pairwise = conf->wpa_pairwise;
81 wconf->wpa_group = conf->wpa_group;
82 wconf->wpa_group_rekey = conf->wpa_group_rekey;
83 wconf->wpa_strict_rekey = conf->wpa_strict_rekey;
84 wconf->wpa_gmk_rekey = conf->wpa_gmk_rekey;
85 wconf->wpa_ptk_rekey = conf->wpa_ptk_rekey;
86 wconf->rsn_pairwise = conf->rsn_pairwise;
87 wconf->rsn_preauth = conf->rsn_preauth;
88 wconf->eapol_version = conf->eapol_version;
89 wconf->peerkey = conf->peerkey;
90 wconf->wmm_enabled = conf->wmm_enabled;
91 wconf->okc = conf->okc;
92 #ifdef CONFIG_IEEE80211W
93 wconf->ieee80211w = conf->ieee80211w;
94 #endif /* CONFIG_IEEE80211W */
95 #ifdef CONFIG_IEEE80211R
96 wconf->ssid_len = conf->ssid.ssid_len;
97 if (wconf->ssid_len > SSID_LEN)
98 wconf->ssid_len = SSID_LEN;
99 os_memcpy(wconf->ssid, conf->ssid.ssid, wconf->ssid_len);
100 os_memcpy(wconf->mobility_domain, conf->mobility_domain,
101 MOBILITY_DOMAIN_ID_LEN);
102 if (conf->nas_identifier &&
103 os_strlen(conf->nas_identifier) <= FT_R0KH_ID_MAX_LEN) {
104 wconf->r0_key_holder_len = os_strlen(conf->nas_identifier);
105 os_memcpy(wconf->r0_key_holder, conf->nas_identifier,
106 wconf->r0_key_holder_len);
108 os_memcpy(wconf->r1_key_holder, conf->r1_key_holder, FT_R1KH_ID_LEN);
109 wconf->r0_key_lifetime = conf->r0_key_lifetime;
110 wconf->reassociation_deadline = conf->reassociation_deadline;
111 wconf->r0kh_list = conf->r0kh_list;
112 wconf->r1kh_list = conf->r1kh_list;
113 wconf->pmk_r1_push = conf->pmk_r1_push;
114 #endif /* CONFIG_IEEE80211R */
118 int hostapd_reload_config(struct hostapd_iface *iface)
120 struct hostapd_data *hapd = iface->bss[0];
121 struct hostapd_config *newconf, *oldconf;
122 struct wpa_auth_config wpa_auth_conf;
125 newconf = hostapd_config_read(iface->config_fname);
130 * Deauthenticate all stations since the new configuration may not
131 * allow them to use the BSS anymore.
133 for (j = 0; j < iface->num_bss; j++)
134 hostapd_flush_old_stations(iface->bss[j]);
136 /* TODO: update dynamic data based on changed configuration
137 * items (e.g., open/close sockets, etc.) */
138 radius_client_flush(hapd->radius, 0);
140 oldconf = hapd->iconf;
141 hapd->iconf = newconf;
142 hapd->conf = &newconf->bss[0];
143 iface->conf = newconf;
145 if (hostapd_setup_wpa_psk(hapd->conf)) {
146 wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
147 "after reloading configuration");
150 if (hapd->conf->wpa && hapd->wpa_auth == NULL)
151 hostapd_setup_wpa(hapd);
152 else if (hapd->conf->wpa) {
153 hostapd_wpa_auth_conf(&newconf->bss[0], &wpa_auth_conf);
154 wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
155 } else if (hapd->wpa_auth) {
156 wpa_deinit(hapd->wpa_auth);
157 hapd->wpa_auth = NULL;
158 hostapd_set_privacy(hapd, 0);
159 hostapd_setup_encryption(hapd->conf->iface, hapd);
162 ieee802_11_set_beacon(hapd);
164 if (hapd->conf->ssid.ssid_set &&
165 hostapd_set_ssid(hapd, (u8 *) hapd->conf->ssid.ssid,
166 hapd->conf->ssid.ssid_len)) {
167 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
168 /* try to continue */
171 if (hapd->conf->ieee802_1x || hapd->conf->wpa)
172 hostapd_set_ieee8021x(hapd->conf->iface, hapd, 1);
174 hostapd_config_free(oldconf);
176 wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
182 int handle_reload_iface(struct hostapd_iface *iface, void *ctx)
184 if (hostapd_reload_config(iface) < 0) {
185 wpa_printf(MSG_WARNING, "Failed to read new configuration "
186 "file - continuing with old.");
192 #ifdef HOSTAPD_DUMP_STATE
194 * hostapd_dump_state - SIGUSR1 handler to dump hostapd state to a text file
196 static void hostapd_dump_state(struct hostapd_data *hapd)
200 struct sta_info *sta;
204 if (!hapd->conf->dump_log_name) {
205 wpa_printf(MSG_DEBUG, "Dump file not defined - ignoring dump "
210 wpa_printf(MSG_DEBUG, "Dumping hostapd state to '%s'",
211 hapd->conf->dump_log_name);
212 f = fopen(hapd->conf->dump_log_name, "w");
214 wpa_printf(MSG_WARNING, "Could not open dump file '%s' for "
215 "writing.", hapd->conf->dump_log_name);
220 fprintf(f, "hostapd state dump - %s", ctime(&now));
221 fprintf(f, "num_sta=%d num_sta_non_erp=%d "
222 "num_sta_no_short_slot_time=%d\n"
223 "num_sta_no_short_preamble=%d\n",
224 hapd->num_sta, hapd->iface->num_sta_non_erp,
225 hapd->iface->num_sta_no_short_slot_time,
226 hapd->iface->num_sta_no_short_preamble);
228 for (sta = hapd->sta_list; sta != NULL; sta = sta->next) {
229 fprintf(f, "\nSTA=" MACSTR "\n", MAC2STR(sta->addr));
232 " AID=%d flags=0x%x %s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
233 " capability=0x%x listen_interval=%d\n",
236 (sta->flags & WLAN_STA_AUTH ? "[AUTH]" : ""),
237 (sta->flags & WLAN_STA_ASSOC ? "[ASSOC]" : ""),
238 (sta->flags & WLAN_STA_PS ? "[PS]" : ""),
239 (sta->flags & WLAN_STA_TIM ? "[TIM]" : ""),
240 (sta->flags & WLAN_STA_PERM ? "[PERM]" : ""),
241 (sta->flags & WLAN_STA_AUTHORIZED ? "[AUTHORIZED]" :
243 (sta->flags & WLAN_STA_PENDING_POLL ? "[PENDING_POLL" :
245 (sta->flags & WLAN_STA_SHORT_PREAMBLE ?
246 "[SHORT_PREAMBLE]" : ""),
247 (sta->flags & WLAN_STA_PREAUTH ? "[PREAUTH]" : ""),
248 (sta->flags & WLAN_STA_WMM ? "[WMM]" : ""),
249 (sta->flags & WLAN_STA_MFP ? "[MFP]" : ""),
250 (sta->flags & WLAN_STA_WPS ? "[WPS]" : ""),
251 (sta->flags & WLAN_STA_MAYBE_WPS ? "[MAYBE_WPS]" : ""),
252 (sta->flags & WLAN_STA_NONERP ? "[NonERP]" : ""),
254 sta->listen_interval);
256 fprintf(f, " supported_rates=");
257 for (i = 0; i < sta->supported_rates_len; i++)
258 fprintf(f, "%02x ", sta->supported_rates[i]);
262 " timeout_next=%s\n",
263 (sta->timeout_next == STA_NULLFUNC ? "NULLFUNC POLL" :
264 (sta->timeout_next == STA_DISASSOC ? "DISASSOC" :
267 ieee802_1x_dump_state(f, " ", sta);
270 buf = os_malloc(4096);
272 int count = radius_client_get_mib(hapd->radius, buf, 4096);
275 else if (count > 4095)
278 fprintf(f, "%s", buf);
280 count = radius_server_get_mib(hapd->radius_srv, buf, 4096);
283 else if (count > 4095)
286 fprintf(f, "%s", buf);
293 int handle_dump_state_iface(struct hostapd_iface *iface, void *ctx)
297 for (i = 0; i < iface->num_bss; i++)
298 hostapd_dump_state(iface->bss[i]);
302 #endif /* HOSTAPD_DUMP_STATE */
305 static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
310 for (i = 0; i < NUM_WEP_KEYS; i++) {
311 if (hostapd_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i,
312 i == 0 ? 1 : 0, NULL, 0, NULL, 0)) {
313 wpa_printf(MSG_DEBUG, "Failed to clear default "
314 "encryption keys (ifname=%s keyidx=%d)",
318 #ifdef CONFIG_IEEE80211W
319 if (hapd->conf->ieee80211w) {
320 for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
321 if (hostapd_set_key(ifname, hapd, WPA_ALG_NONE, NULL,
322 i, i == 0 ? 1 : 0, NULL, 0,
324 wpa_printf(MSG_DEBUG, "Failed to clear "
325 "default mgmt encryption keys "
326 "(ifname=%s keyidx=%d)", ifname, i);
330 #endif /* CONFIG_IEEE80211W */
334 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
336 hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
341 static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
344 struct hostapd_ssid *ssid = &hapd->conf->ssid;
347 if (ssid->wep.default_len &&
348 hostapd_set_key(hapd->conf->iface,
349 hapd, WPA_ALG_WEP, NULL, idx, idx == ssid->wep.idx,
350 NULL, 0, ssid->wep.key[idx], ssid->wep.len[idx])) {
351 wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
355 if (ssid->dyn_vlan_keys) {
357 for (i = 0; i <= ssid->max_dyn_vlan_keys; i++) {
359 struct hostapd_wep_keys *key = ssid->dyn_vlan_keys[i];
362 ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan,
368 if (hostapd_set_key(ifname, hapd, WPA_ALG_WEP, NULL,
369 idx, idx == key->idx, NULL, 0,
370 key->key[idx], key->len[idx])) {
371 wpa_printf(MSG_WARNING, "Could not set "
372 "dynamic VLAN WEP encryption.");
382 * hostapd_cleanup - Per-BSS cleanup (deinitialization)
383 * @hapd: Pointer to BSS data
385 * This function is used to free all per-BSS data structures and resources.
386 * This gets called in a loop for each BSS between calls to
387 * hostapd_cleanup_iface_pre() and hostapd_cleanup_iface() when an interface
388 * is deinitialized. Most of the modules that are initialized in
389 * hostapd_setup_bss() are deinitialized here.
391 static void hostapd_cleanup(struct hostapd_data *hapd)
393 hostapd_ctrl_iface_deinit(hapd);
395 iapp_deinit(hapd->iapp);
397 accounting_deinit(hapd);
398 rsn_preauth_iface_deinit(hapd);
399 if (hapd->wpa_auth) {
400 wpa_deinit(hapd->wpa_auth);
401 hapd->wpa_auth = NULL;
403 if (hostapd_set_privacy(hapd, 0)) {
404 wpa_printf(MSG_DEBUG, "Could not disable "
405 "PrivacyInvoked for interface %s",
409 if (hostapd_set_generic_elem(hapd, (u8 *) "", 0)) {
410 wpa_printf(MSG_DEBUG, "Could not remove generic "
411 "information element from interface %s",
415 ieee802_1x_deinit(hapd);
417 hostapd_acl_deinit(hapd);
418 radius_client_deinit(hapd->radius);
420 radius_server_deinit(hapd->radius_srv);
421 hapd->radius_srv = NULL;
423 #ifdef CONFIG_IEEE80211R
424 l2_packet_deinit(hapd->l2);
425 #endif /* CONFIG_IEEE80211R */
427 hostapd_deinit_wps(hapd);
431 tls_deinit(hapd->ssl_ctx);
432 hapd->ssl_ctx = NULL;
434 #endif /* EAP_TLS_FUNCS */
437 if (hapd->eap_sim_db_priv) {
438 eap_sim_db_deinit(hapd->eap_sim_db_priv);
439 hapd->eap_sim_db_priv = NULL;
441 #endif /* EAP_SERVER */
443 if (hapd->interface_added &&
444 hostapd_bss_remove(hapd, hapd->conf->iface)) {
445 wpa_printf(MSG_WARNING, "Failed to remove BSS interface %s",
452 * hostapd_cleanup_iface_pre - Preliminary per-interface cleanup
453 * @iface: Pointer to interface data
455 * This function is called before per-BSS data structures are deinitialized
456 * with hostapd_cleanup().
458 static void hostapd_cleanup_iface_pre(struct hostapd_iface *iface)
464 * hostapd_cleanup_iface - Complete per-interface cleanup
465 * @iface: Pointer to interface data
467 * This function is called after per-BSS data structures are deinitialized
468 * with hostapd_cleanup().
470 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
472 hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
473 iface->hw_features = NULL;
474 os_free(iface->current_rates);
475 iface->current_rates = NULL;
476 ap_list_deinit(iface);
477 hostapd_config_free(iface->conf);
480 os_free(iface->config_fname);
486 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
490 hostapd_broadcast_wep_set(hapd);
492 if (hapd->conf->ssid.wep.default_len)
495 for (i = 0; i < 4; i++) {
496 if (hapd->conf->ssid.wep.key[i] &&
497 hostapd_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
498 i == hapd->conf->ssid.wep.idx, NULL, 0,
499 hapd->conf->ssid.wep.key[i],
500 hapd->conf->ssid.wep.len[i])) {
501 wpa_printf(MSG_WARNING, "Could not set WEP "
505 if (hapd->conf->ssid.wep.key[i] &&
506 i == hapd->conf->ssid.wep.idx)
507 hostapd_set_privacy(hapd, 1);
514 static int hostapd_flush_old_stations(struct hostapd_data *hapd)
518 if (hostapd_drv_none(hapd))
521 wpa_printf(MSG_DEBUG, "Flushing old station entries");
522 if (hostapd_flush(hapd)) {
523 wpa_printf(MSG_WARNING, "Could not connect to kernel driver.");
526 wpa_printf(MSG_DEBUG, "Deauthenticate all stations");
528 /* New Prism2.5/3 STA firmware versions seem to have issues with this
529 * broadcast deauth frame. This gets the firmware in odd state where
530 * nothing works correctly, so let's skip sending this for the hostap
532 if (hapd->driver && os_strcmp(hapd->driver->name, "hostap") != 0) {
534 os_memset(addr, 0xff, ETH_ALEN);
535 hostapd_sta_deauth(hapd, addr,
536 WLAN_REASON_PREV_AUTH_NOT_VALID);
543 static void hostapd_wpa_auth_logger(void *ctx, const u8 *addr,
544 logger_level level, const char *txt)
546 #ifndef CONFIG_NO_HOSTAPD_LOGGER
547 struct hostapd_data *hapd = ctx;
552 hlevel = HOSTAPD_LEVEL_WARNING;
555 hlevel = HOSTAPD_LEVEL_INFO;
559 hlevel = HOSTAPD_LEVEL_DEBUG;
563 hostapd_logger(hapd, addr, HOSTAPD_MODULE_WPA, hlevel, "%s", txt);
564 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
568 static void hostapd_wpa_auth_disconnect(void *ctx, const u8 *addr,
571 struct hostapd_data *hapd = ctx;
572 struct sta_info *sta;
574 wpa_printf(MSG_DEBUG, "%s: WPA authenticator requests disconnect: "
575 "STA " MACSTR " reason %d",
576 __func__, MAC2STR(addr), reason);
578 sta = ap_get_sta(hapd, addr);
579 hostapd_sta_deauth(hapd, addr, reason);
582 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_AUTHORIZED);
583 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
584 eloop_register_timeout(0, 0, ap_handle_timer, hapd, sta);
585 sta->timeout_next = STA_REMOVE;
589 static void hostapd_wpa_auth_mic_failure_report(void *ctx, const u8 *addr)
591 struct hostapd_data *hapd = ctx;
592 michael_mic_failure(hapd, addr, 0);
596 static void hostapd_wpa_auth_set_eapol(void *ctx, const u8 *addr,
597 wpa_eapol_variable var, int value)
599 struct hostapd_data *hapd = ctx;
600 struct sta_info *sta = ap_get_sta(hapd, addr);
604 case WPA_EAPOL_portEnabled:
605 ieee802_1x_notify_port_enabled(sta->eapol_sm, value);
607 case WPA_EAPOL_portValid:
608 ieee802_1x_notify_port_valid(sta->eapol_sm, value);
610 case WPA_EAPOL_authorized:
611 ieee802_1x_set_sta_authorized(hapd, sta, value);
613 case WPA_EAPOL_portControl_Auto:
615 sta->eapol_sm->portControl = Auto;
617 case WPA_EAPOL_keyRun:
619 sta->eapol_sm->keyRun = value ? TRUE : FALSE;
621 case WPA_EAPOL_keyAvailable:
623 sta->eapol_sm->eap_if->eapKeyAvailable =
624 value ? TRUE : FALSE;
626 case WPA_EAPOL_keyDone:
628 sta->eapol_sm->keyDone = value ? TRUE : FALSE;
630 case WPA_EAPOL_inc_EapolFramesTx:
632 sta->eapol_sm->dot1xAuthEapolFramesTx++;
638 static int hostapd_wpa_auth_get_eapol(void *ctx, const u8 *addr,
639 wpa_eapol_variable var)
641 struct hostapd_data *hapd = ctx;
642 struct sta_info *sta = ap_get_sta(hapd, addr);
643 if (sta == NULL || sta->eapol_sm == NULL)
646 case WPA_EAPOL_keyRun:
647 return sta->eapol_sm->keyRun;
648 case WPA_EAPOL_keyAvailable:
649 return sta->eapol_sm->eap_if->eapKeyAvailable;
656 static const u8 * hostapd_wpa_auth_get_psk(void *ctx, const u8 *addr,
659 struct hostapd_data *hapd = ctx;
660 return hostapd_get_psk(hapd->conf, addr, prev_psk);
664 static int hostapd_wpa_auth_get_msk(void *ctx, const u8 *addr, u8 *msk,
667 struct hostapd_data *hapd = ctx;
670 struct sta_info *sta;
672 sta = ap_get_sta(hapd, addr);
676 key = ieee802_1x_get_key(sta->eapol_sm, &keylen);
682 os_memcpy(msk, key, keylen);
689 static int hostapd_wpa_auth_set_key(void *ctx, int vlan_id, wpa_alg alg,
690 const u8 *addr, int idx, u8 *key,
693 struct hostapd_data *hapd = ctx;
694 const char *ifname = hapd->conf->iface;
697 ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
702 return hostapd_set_key(ifname, hapd, alg, addr, idx, 1, NULL, 0,
707 static int hostapd_wpa_auth_get_seqnum(void *ctx, const u8 *addr, int idx,
710 struct hostapd_data *hapd = ctx;
711 return hostapd_get_seqnum(hapd->conf->iface, hapd, addr, idx, seq);
715 static int hostapd_wpa_auth_get_seqnum_igtk(void *ctx, const u8 *addr, int idx,
718 struct hostapd_data *hapd = ctx;
719 return hostapd_get_seqnum_igtk(hapd->conf->iface, hapd, addr, idx,
724 static int hostapd_wpa_auth_send_eapol(void *ctx, const u8 *addr,
725 const u8 *data, size_t data_len,
728 struct hostapd_data *hapd = ctx;
729 return hostapd_send_eapol(hapd, addr, data, data_len, encrypt);
733 static int hostapd_wpa_auth_for_each_sta(
734 void *ctx, int (*cb)(struct wpa_state_machine *sm, void *ctx),
737 struct hostapd_data *hapd = ctx;
738 struct sta_info *sta;
740 for (sta = hapd->sta_list; sta; sta = sta->next) {
741 if (sta->wpa_sm && cb(sta->wpa_sm, cb_ctx))
748 struct wpa_auth_iface_iter_data {
749 int (*cb)(struct wpa_authenticator *sm, void *ctx);
753 static int wpa_auth_iface_iter(struct hostapd_iface *iface, void *ctx)
755 struct wpa_auth_iface_iter_data *data = ctx;
757 for (i = 0; i < iface->num_bss; i++) {
758 if (data->cb(iface->bss[i]->wpa_auth, data->cb_ctx))
765 static int hostapd_wpa_auth_for_each_auth(
766 void *ctx, int (*cb)(struct wpa_authenticator *sm, void *ctx),
769 struct wpa_auth_iface_iter_data data;
771 data.cb_ctx = cb_ctx;
772 return hostapd_for_each_interface(wpa_auth_iface_iter, &data);
776 static int hostapd_wpa_auth_send_ether(void *ctx, const u8 *dst, u16 proto,
777 const u8 *data, size_t data_len)
779 struct hostapd_data *hapd = ctx;
781 if (hapd->driver && hapd->driver->send_ether)
782 return hapd->driver->send_ether(hapd->drv_priv, dst,
783 hapd->own_addr, proto,
785 if (hapd->l2 == NULL)
787 return l2_packet_send(hapd->l2, dst, proto, data, data_len);
791 #ifdef CONFIG_IEEE80211R
793 static int hostapd_wpa_auth_send_ft_action(void *ctx, const u8 *dst,
794 const u8 *data, size_t data_len)
796 struct hostapd_data *hapd = ctx;
798 struct ieee80211_mgmt *m;
800 struct sta_info *sta;
802 sta = ap_get_sta(hapd, dst);
803 if (sta == NULL || sta->wpa_sm == NULL)
806 m = os_zalloc(sizeof(*m) + data_len);
809 mlen = ((u8 *) &m->u - (u8 *) m) + data_len;
810 m->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
811 WLAN_FC_STYPE_ACTION);
812 os_memcpy(m->da, dst, ETH_ALEN);
813 os_memcpy(m->sa, hapd->own_addr, ETH_ALEN);
814 os_memcpy(m->bssid, hapd->own_addr, ETH_ALEN);
815 os_memcpy(&m->u, data, data_len);
817 res = hostapd_send_mgmt_frame(hapd, (u8 *) m, mlen);
823 static struct wpa_state_machine *
824 hostapd_wpa_auth_add_sta(void *ctx, const u8 *sta_addr)
826 struct hostapd_data *hapd = ctx;
827 struct sta_info *sta;
829 sta = ap_sta_add(hapd, sta_addr);
835 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr);
836 if (sta->wpa_sm == NULL) {
837 ap_free_sta(hapd, sta);
840 sta->auth_alg = WLAN_AUTH_FT;
846 static void hostapd_rrb_receive(void *ctx, const u8 *src_addr, const u8 *buf,
849 struct hostapd_data *hapd = ctx;
850 wpa_ft_rrb_rx(hapd->wpa_auth, src_addr, buf, len);
853 #endif /* CONFIG_IEEE80211R */
857 * hostapd_validate_bssid_configuration - Validate BSSID configuration
858 * @iface: Pointer to interface data
859 * Returns: 0 on success, -1 on failure
861 * This function is used to validate that the configured BSSIDs are valid.
863 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
865 u8 mask[ETH_ALEN] = { 0 };
866 struct hostapd_data *hapd = iface->bss[0];
867 unsigned int i = iface->conf->num_bss, bits = 0, j;
871 if (hostapd_drv_none(hapd))
874 /* Generate BSSID mask that is large enough to cover the BSSIDs. */
876 /* Determine the bits necessary to cover the number of BSSIDs. */
877 for (i--; i; i >>= 1)
880 /* Determine the bits necessary to any configured BSSIDs,
881 if they are higher than the number of BSSIDs. */
882 for (j = 0; j < iface->conf->num_bss; j++) {
883 if (hostapd_mac_comp_empty(iface->conf->bss[j].bssid) == 0) {
889 for (i = 0; i < ETH_ALEN; i++) {
891 iface->conf->bss[j].bssid[i] ^
899 for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
905 while (mask[i] != 0) {
915 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
920 os_memset(mask, 0xff, ETH_ALEN);
922 for (i = 5; i > 5 - j; i--)
929 wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
930 (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
932 res = hostapd_valid_bss_mask(hapd, hapd->own_addr, mask);
937 wpa_printf(MSG_ERROR, "Driver did not accept BSSID mask "
938 MACSTR " for start address " MACSTR ".",
939 MAC2STR(mask), MAC2STR(hapd->own_addr));
946 for (i = 0; i < ETH_ALEN; i++) {
947 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
948 wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
949 " for start address " MACSTR ".",
950 MAC2STR(mask), MAC2STR(hapd->own_addr));
951 wpa_printf(MSG_ERROR, "Start address must be the "
952 "first address in the block (i.e., addr "
953 "AND mask == addr).");
962 static int mac_in_conf(struct hostapd_config *conf, const void *a)
966 for (i = 0; i < conf->num_bss; i++) {
967 if (hostapd_mac_comp(conf->bss[i].bssid, a) == 0) {
976 static int hostapd_setup_wpa(struct hostapd_data *hapd)
978 struct wpa_auth_config _conf;
979 struct wpa_auth_callbacks cb;
983 hostapd_wpa_auth_conf(hapd->conf, &_conf);
984 os_memset(&cb, 0, sizeof(cb));
986 cb.logger = hostapd_wpa_auth_logger;
987 cb.disconnect = hostapd_wpa_auth_disconnect;
988 cb.mic_failure_report = hostapd_wpa_auth_mic_failure_report;
989 cb.set_eapol = hostapd_wpa_auth_set_eapol;
990 cb.get_eapol = hostapd_wpa_auth_get_eapol;
991 cb.get_psk = hostapd_wpa_auth_get_psk;
992 cb.get_msk = hostapd_wpa_auth_get_msk;
993 cb.set_key = hostapd_wpa_auth_set_key;
994 cb.get_seqnum = hostapd_wpa_auth_get_seqnum;
995 cb.get_seqnum_igtk = hostapd_wpa_auth_get_seqnum_igtk;
996 cb.send_eapol = hostapd_wpa_auth_send_eapol;
997 cb.for_each_sta = hostapd_wpa_auth_for_each_sta;
998 cb.for_each_auth = hostapd_wpa_auth_for_each_auth;
999 cb.send_ether = hostapd_wpa_auth_send_ether;
1000 #ifdef CONFIG_IEEE80211R
1001 cb.send_ft_action = hostapd_wpa_auth_send_ft_action;
1002 cb.add_sta = hostapd_wpa_auth_add_sta;
1003 #endif /* CONFIG_IEEE80211R */
1004 hapd->wpa_auth = wpa_init(hapd->own_addr, &_conf, &cb);
1005 if (hapd->wpa_auth == NULL) {
1006 wpa_printf(MSG_ERROR, "WPA initialization failed.");
1010 if (hostapd_set_privacy(hapd, 1)) {
1011 wpa_printf(MSG_ERROR, "Could not set PrivacyInvoked "
1012 "for interface %s", hapd->conf->iface);
1016 wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
1017 if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) {
1018 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
1019 "the kernel driver.");
1023 if (rsn_preauth_iface_init(hapd)) {
1024 wpa_printf(MSG_ERROR, "Initialization of RSN "
1025 "pre-authentication failed.");
1034 static int hostapd_setup_radius_srv(struct hostapd_data *hapd,
1035 struct hostapd_bss_config *conf)
1037 struct radius_server_conf srv;
1038 os_memset(&srv, 0, sizeof(srv));
1039 srv.client_file = conf->radius_server_clients;
1040 srv.auth_port = conf->radius_server_auth_port;
1041 srv.conf_ctx = conf;
1042 srv.eap_sim_db_priv = hapd->eap_sim_db_priv;
1043 srv.ssl_ctx = hapd->ssl_ctx;
1044 srv.pac_opaque_encr_key = conf->pac_opaque_encr_key;
1045 srv.eap_fast_a_id = conf->eap_fast_a_id;
1046 srv.eap_fast_a_id_len = conf->eap_fast_a_id_len;
1047 srv.eap_fast_a_id_info = conf->eap_fast_a_id_info;
1048 srv.eap_fast_prov = conf->eap_fast_prov;
1049 srv.pac_key_lifetime = conf->pac_key_lifetime;
1050 srv.pac_key_refresh_time = conf->pac_key_refresh_time;
1051 srv.eap_sim_aka_result_ind = conf->eap_sim_aka_result_ind;
1052 srv.tnc = conf->tnc;
1053 srv.wps = hapd->wps;
1054 srv.ipv6 = conf->radius_server_ipv6;
1055 srv.get_eap_user = hostapd_radius_get_eap_user;
1056 srv.eap_req_id_text = conf->eap_req_id_text;
1057 srv.eap_req_id_text_len = conf->eap_req_id_text_len;
1059 hapd->radius_srv = radius_server_init(&srv);
1060 if (hapd->radius_srv == NULL) {
1061 wpa_printf(MSG_ERROR, "RADIUS server initialization failed.");
1070 * hostapd_setup_bss - Per-BSS setup (initialization)
1071 * @hapd: Pointer to BSS data
1072 * @first: Whether this BSS is the first BSS of an interface
1074 * This function is used to initialize all per-BSS data structures and
1075 * resources. This gets called in a loop for each BSS when an interface is
1076 * initialized. Most of the modules that are initialized here will be
1077 * deinitialized in hostapd_cleanup().
1079 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
1081 struct hostapd_bss_config *conf = hapd->conf;
1082 u8 ssid[HOSTAPD_MAX_SSID_LEN + 1];
1083 int ssid_len, set_ssid;
1086 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0) {
1087 /* Allocate the next available BSSID. */
1089 inc_byte_array(hapd->own_addr, ETH_ALEN);
1090 } while (mac_in_conf(hapd->iconf, hapd->own_addr));
1092 /* Allocate the configured BSSID. */
1093 os_memcpy(hapd->own_addr, hapd->conf->bssid, ETH_ALEN);
1095 if (hostapd_mac_comp(hapd->own_addr,
1096 hapd->iface->bss[0]->own_addr) ==
1098 wpa_printf(MSG_ERROR, "BSS '%s' may not have "
1099 "BSSID set to the MAC address of "
1100 "the radio", hapd->conf->iface);
1105 hapd->interface_added = 1;
1106 if (hostapd_bss_add(hapd->iface->bss[0], hapd->conf->iface,
1108 wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
1109 MACSTR ")", MAC2STR(hapd->own_addr));
1114 hostapd_flush_old_stations(hapd);
1115 hostapd_set_privacy(hapd, 0);
1117 hostapd_broadcast_wep_clear(hapd);
1118 if (hostapd_setup_encryption(hapd->conf->iface, hapd))
1122 * Fetch the SSID from the system and use it or,
1123 * if one was specified in the config file, verify they
1126 ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
1128 wpa_printf(MSG_ERROR, "Could not read SSID from system");
1131 if (conf->ssid.ssid_set) {
1133 * If SSID is specified in the config file and it differs
1134 * from what is being used then force installation of the
1137 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
1138 os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
1141 * No SSID in the config file; just use the one we got
1145 conf->ssid.ssid_len = ssid_len;
1146 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
1147 conf->ssid.ssid[conf->ssid.ssid_len] = '\0';
1150 if (!hostapd_drv_none(hapd)) {
1151 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
1153 hapd->conf->iface, MAC2STR(hapd->own_addr),
1154 hapd->conf->ssid.ssid);
1157 if (hostapd_setup_wpa_psk(conf)) {
1158 wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
1162 /* Set SSID for the kernel driver (to be used in beacon and probe
1163 * response frames) */
1164 if (set_ssid && hostapd_set_ssid(hapd, (u8 *) conf->ssid.ssid,
1165 conf->ssid.ssid_len)) {
1166 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
1170 if (wpa_debug_level == MSG_MSGDUMP)
1171 conf->radius->msg_dumps = 1;
1172 hapd->radius = radius_client_init(hapd, conf->radius);
1173 if (hapd->radius == NULL) {
1174 wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
1178 if (hostapd_acl_init(hapd)) {
1179 wpa_printf(MSG_ERROR, "ACL initialization failed.");
1182 if (hostapd_init_wps(hapd, conf))
1185 if (ieee802_1x_init(hapd)) {
1186 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
1190 if (hapd->conf->wpa && hostapd_setup_wpa(hapd))
1193 if (accounting_init(hapd)) {
1194 wpa_printf(MSG_ERROR, "Accounting initialization failed.");
1198 if (hapd->conf->ieee802_11f &&
1199 (hapd->iapp = iapp_init(hapd, hapd->conf->iapp_iface)) == NULL) {
1200 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
1205 if (hostapd_ctrl_iface_init(hapd)) {
1206 wpa_printf(MSG_ERROR, "Failed to setup control interface");
1210 if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
1211 wpa_printf(MSG_ERROR, "VLAN initialization failed.");
1215 #ifdef CONFIG_IEEE80211R
1216 if (!hostapd_drv_none(hapd)) {
1217 hapd->l2 = l2_packet_init(hapd->conf->iface, NULL, ETH_P_RRB,
1218 hostapd_rrb_receive, hapd, 0);
1219 if (hapd->l2 == NULL &&
1220 (hapd->driver == NULL ||
1221 hapd->driver->send_ether == NULL)) {
1222 wpa_printf(MSG_ERROR, "Failed to open l2_packet "
1227 #endif /* CONFIG_IEEE80211R */
1229 ieee802_11_set_beacon(hapd);
1231 if (conf->radius_server_clients &&
1232 hostapd_setup_radius_srv(hapd, conf))
1239 static void hostapd_tx_queue_params(struct hostapd_iface *iface)
1241 struct hostapd_data *hapd = iface->bss[0];
1243 struct hostapd_tx_queue_params *p;
1245 for (i = 0; i < NUM_TX_QUEUES; i++) {
1246 p = &iface->conf->tx_queue[i];
1251 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
1252 p->cwmax, p->burst)) {
1253 wpa_printf(MSG_DEBUG, "Failed to set TX queue "
1254 "parameters for queue %d.", i);
1255 /* Continue anyway */
1261 static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
1262 size_t identity_len, int phase2,
1263 struct eap_user *user)
1265 const struct hostapd_eap_user *eap_user;
1268 eap_user = hostapd_get_eap_user(ctx, identity, identity_len, phase2);
1269 if (eap_user == NULL)
1275 os_memset(user, 0, sizeof(*user));
1276 count = EAP_USER_MAX_METHODS;
1277 if (count > EAP_MAX_METHODS)
1278 count = EAP_MAX_METHODS;
1279 for (i = 0; i < count; i++) {
1280 user->methods[i].vendor = eap_user->methods[i].vendor;
1281 user->methods[i].method = eap_user->methods[i].method;
1284 if (eap_user->password) {
1285 user->password = os_malloc(eap_user->password_len);
1286 if (user->password == NULL)
1288 os_memcpy(user->password, eap_user->password,
1289 eap_user->password_len);
1290 user->password_len = eap_user->password_len;
1291 user->password_hash = eap_user->password_hash;
1293 user->force_version = eap_user->force_version;
1294 user->ttls_auth = eap_user->ttls_auth;
1300 static int setup_interface(struct hostapd_iface *iface)
1302 struct hostapd_data *hapd = iface->bss[0];
1303 struct hostapd_bss_config *conf = hapd->conf;
1306 u8 *b = conf->bssid;
1309 * Initialize the driver interface and make sure that all BSSes get
1310 * configured with a pointer to this driver interface.
1312 if (!(b[0] | b[1] | b[2] | b[3] | b[4] | b[5]))
1314 hapd->drv_priv = hostapd_driver_init(hapd, b);
1316 if (hapd->drv_priv == NULL) {
1317 wpa_printf(MSG_ERROR, "%s driver initialization failed.",
1318 hapd->driver ? hapd->driver->name : "Unknown");
1319 hapd->driver = NULL;
1322 for (i = 0; i < iface->num_bss; i++) {
1323 iface->bss[i]->driver = hapd->driver;
1324 iface->bss[i]->drv_priv = hapd->drv_priv;
1327 if (hostapd_driver_set_mode(hapd, IEEE80211_MODE_AP)) {
1328 wpa_printf(MSG_ERROR, "Failed to set driver in AP mode");
1332 if (hostapd_validate_bssid_configuration(iface))
1335 #ifdef CONFIG_IEEE80211N
1336 SET_2BIT_LE16(&iface->ht_op_mode,
1337 HT_INFO_OPERATION_MODE_OP_MODE_OFFSET,
1339 #endif /* CONFIG_IEEE80211N */
1341 if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1342 os_memcpy(country, hapd->iconf->country, 3);
1344 if (hostapd_set_country(hapd, country) < 0) {
1345 wpa_printf(MSG_ERROR, "Failed to set country code");
1350 if (hapd->iconf->bridge_packets != INTERNAL_BRIDGE_DO_NOT_CONTROL &&
1351 hostapd_set_internal_bridge(hapd, hapd->iconf->bridge_packets)) {
1352 wpa_printf(MSG_ERROR, "Failed to set bridge_packets for "
1357 if (hostapd_get_hw_features(iface)) {
1358 /* Not all drivers support this yet, so continue without hw
1361 int ret = hostapd_select_hw_mode(iface);
1363 wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1364 "channel. (%d)", ret);
1367 ret = hostapd_check_ht_capab(iface);
1371 wpa_printf(MSG_DEBUG, "Interface initialization will "
1372 "be completed in a callback");
1376 return hostapd_setup_interface_complete(iface, 0);
1380 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err)
1382 struct hostapd_data *hapd = iface->bss[0];
1388 wpa_printf(MSG_ERROR, "Interface initialization failed");
1393 wpa_printf(MSG_DEBUG, "Completing interface initialization");
1394 if (hapd->iconf->channel) {
1395 freq = hostapd_hw_get_freq(hapd, hapd->iconf->channel);
1396 wpa_printf(MSG_DEBUG, "Mode: %s Channel: %d "
1397 "Frequency: %d MHz",
1398 hostapd_hw_mode_txt(hapd->iconf->hw_mode),
1399 hapd->iconf->channel, freq);
1401 if (hostapd_set_freq(hapd, hapd->iconf->hw_mode, freq,
1402 hapd->iconf->channel,
1403 hapd->iconf->ieee80211n,
1404 hapd->iconf->secondary_channel)) {
1405 wpa_printf(MSG_ERROR, "Could not set channel for "
1411 hostapd_set_beacon_int(hapd, hapd->iconf->beacon_int);
1413 if (hapd->iconf->rts_threshold > -1 &&
1414 hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
1415 wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
1420 if (hapd->iconf->fragm_threshold > -1 &&
1421 hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
1422 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
1423 "for kernel driver");
1427 prev_addr = hapd->own_addr;
1429 for (j = 0; j < iface->num_bss; j++) {
1430 hapd = iface->bss[j];
1432 os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
1433 if (hostapd_setup_bss(hapd, j == 0))
1435 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
1436 prev_addr = hapd->own_addr;
1439 hostapd_tx_queue_params(iface);
1441 ap_list_init(iface);
1443 if (hostapd_driver_commit(hapd) < 0) {
1444 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
1445 "configuration", __func__);
1449 wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
1450 iface->bss[0]->conf->iface);
1457 * hostapd_setup_interface - Setup of an interface
1458 * @iface: Pointer to interface data.
1459 * Returns: 0 on success, -1 on failure
1461 * Initializes the driver interface, validates the configuration,
1462 * and sets driver parameters based on the configuration.
1463 * Flushes old stations, sets the channel, encryption,
1464 * beacons, and WDS links based on the configuration.
1466 int hostapd_setup_interface(struct hostapd_iface *iface)
1470 ret = setup_interface(iface);
1472 wpa_printf(MSG_DEBUG, "%s: Unable to setup interface.",
1473 iface->bss[0]->conf->iface);
1483 * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
1484 * @hapd_iface: Pointer to interface data
1485 * @conf: Pointer to per-interface configuration
1486 * @bss: Pointer to per-BSS configuration for this BSS
1487 * Returns: Pointer to allocated BSS data
1489 * This function is used to allocate per-BSS data structure. This data will be
1490 * freed after hostapd_cleanup() is called for it during interface
1493 struct hostapd_data *
1494 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
1495 struct hostapd_config *conf,
1496 struct hostapd_bss_config *bss)
1498 struct hostapd_data *hapd;
1500 hapd = os_zalloc(sizeof(*hapd));
1506 hapd->iface = hapd_iface;
1508 #ifdef EAP_TLS_FUNCS
1509 if (hapd->conf->eap_server &&
1510 (hapd->conf->ca_cert || hapd->conf->server_cert ||
1511 hapd->conf->dh_file)) {
1512 struct tls_connection_params params;
1514 hapd->ssl_ctx = tls_init(NULL);
1515 if (hapd->ssl_ctx == NULL) {
1516 wpa_printf(MSG_ERROR, "Failed to initialize TLS");
1520 os_memset(¶ms, 0, sizeof(params));
1521 params.ca_cert = hapd->conf->ca_cert;
1522 params.client_cert = hapd->conf->server_cert;
1523 params.private_key = hapd->conf->private_key;
1524 params.private_key_passwd = hapd->conf->private_key_passwd;
1525 params.dh_file = hapd->conf->dh_file;
1527 if (tls_global_set_params(hapd->ssl_ctx, ¶ms)) {
1528 wpa_printf(MSG_ERROR, "Failed to set TLS parameters");
1532 if (tls_global_set_verify(hapd->ssl_ctx,
1533 hapd->conf->check_crl)) {
1534 wpa_printf(MSG_ERROR, "Failed to enable check_crl");
1538 #endif /* EAP_TLS_FUNCS */
1541 if (hapd->conf->eap_sim_db) {
1542 hapd->eap_sim_db_priv =
1543 eap_sim_db_init(hapd->conf->eap_sim_db,
1544 hostapd_sim_db_cb, hapd);
1545 if (hapd->eap_sim_db_priv == NULL) {
1546 wpa_printf(MSG_ERROR, "Failed to initialize EAP-SIM "
1547 "database interface");
1551 #endif /* EAP_SERVER */
1553 hapd->driver = hapd->iconf->driver;
1557 #if defined(EAP_TLS_FUNCS) || defined(EAP_SERVER)
1560 /* TODO: cleanup allocated resources(?) */
1566 void hostapd_interface_deinit(struct hostapd_iface *iface)
1573 hostapd_cleanup_iface_pre(iface);
1574 for (j = 0; j < iface->num_bss; j++) {
1575 struct hostapd_data *hapd = iface->bss[j];
1576 hostapd_free_stas(hapd);
1577 hostapd_flush_old_stations(hapd);
1578 hostapd_cleanup(hapd);
1579 if (j == iface->num_bss - 1 && hapd->driver)
1580 hostapd_driver_deinit(hapd);
1582 for (j = 0; j < iface->num_bss; j++)
1583 os_free(iface->bss[j]);
1584 hostapd_cleanup_iface(iface);