1 /*
2 * hostapd / Initialization and configuration
3 * Copyright (c) 2002-2019, 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 #ifdef CONFIG_SQLITE
11 #include <sqlite3.h>
12 #endif /* CONFIG_SQLITE */
13
14 #include "utils/common.h"
15 #include "utils/eloop.h"
16 #include "utils/crc32.h"
17 #include "common/ieee802_11_defs.h"
18 #include "common/wpa_ctrl.h"
19 #include "common/hw_features_common.h"
20 #include "radius/radius_client.h"
21 #include "radius/radius_das.h"
22 #include "eap_server/tncs.h"
23 #include "eapol_auth/eapol_auth_sm.h"
24 #include "eapol_auth/eapol_auth_sm_i.h"
25 #include "fst/fst.h"
26 #include "hostapd.h"
27 #include "authsrv.h"
28 #include "sta_info.h"
29 #include "accounting.h"
30 #include "ap_list.h"
31 #include "beacon.h"
32 #include "ieee802_1x.h"
33 #include "ieee802_11_auth.h"
34 #include "vlan_init.h"
35 #include "wpa_auth.h"
36 #include "wps_hostapd.h"
37 #include "dpp_hostapd.h"
38 #include "gas_query_ap.h"
39 #include "hw_features.h"
40 #include "wpa_auth_glue.h"
41 #include "ap_drv_ops.h"
42 #include "ap_config.h"
43 #include "p2p_hostapd.h"
44 #include "gas_serv.h"
45 #include "dfs.h"
46 #include "ieee802_11.h"
47 #include "bss_load.h"
48 #include "x_snoop.h"
49 #include "dhcp_snoop.h"
50 #include "ndisc_snoop.h"
51 #include "neighbor_db.h"
52 #include "rrm.h"
53 #include "fils_hlp.h"
54 #include "acs.h"
55 #include "hs20.h"
56 #include "airtime_policy.h"
57 #include "wpa_auth_kay.h"
58
59
60 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason);
61 #ifdef CONFIG_WEP
62 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
63 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd);
64 #endif /* CONFIG_WEP */
65 static int setup_interface2(struct hostapd_iface *iface);
66 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx);
67 static void hostapd_interface_setup_failure_handler(void *eloop_ctx,
68 void *timeout_ctx);
69
70
hostapd_for_each_interface(struct hapd_interfaces * interfaces,int (* cb)(struct hostapd_iface * iface,void * ctx),void * ctx)71 int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
72 int (*cb)(struct hostapd_iface *iface,
73 void *ctx), void *ctx)
74 {
75 size_t i;
76 int ret;
77
78 for (i = 0; i < interfaces->count; i++) {
79 if (!interfaces->iface[i])
80 continue;
81 ret = cb(interfaces->iface[i], ctx);
82 if (ret)
83 return ret;
84 }
85
86 return 0;
87 }
88
89
hostapd_reconfig_encryption(struct hostapd_data * hapd)90 void hostapd_reconfig_encryption(struct hostapd_data *hapd)
91 {
92 if (hapd->wpa_auth)
93 return;
94
95 hostapd_set_privacy(hapd, 0);
96 #ifdef CONFIG_WEP
97 hostapd_setup_encryption(hapd->conf->iface, hapd);
98 #endif /* CONFIG_WEP */
99 }
100
101
hostapd_reload_bss(struct hostapd_data * hapd)102 static void hostapd_reload_bss(struct hostapd_data *hapd)
103 {
104 struct hostapd_ssid *ssid;
105
106 if (!hapd->started)
107 return;
108
109 if (hapd->conf->wmm_enabled < 0)
110 hapd->conf->wmm_enabled = hapd->iconf->ieee80211n;
111
112 #ifndef CONFIG_NO_RADIUS
113 radius_client_reconfig(hapd->radius, hapd->conf->radius);
114 #endif /* CONFIG_NO_RADIUS */
115
116 ssid = &hapd->conf->ssid;
117 if (!ssid->wpa_psk_set && ssid->wpa_psk && !ssid->wpa_psk->next &&
118 ssid->wpa_passphrase_set && ssid->wpa_passphrase) {
119 /*
120 * Force PSK to be derived again since SSID or passphrase may
121 * have changed.
122 */
123 hostapd_config_clear_wpa_psk(&hapd->conf->ssid.wpa_psk);
124 }
125 if (hostapd_setup_wpa_psk(hapd->conf)) {
126 wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
127 "after reloading configuration");
128 }
129
130 if (hapd->conf->ieee802_1x || hapd->conf->wpa)
131 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1);
132 else
133 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
134
135 if ((hapd->conf->wpa || hapd->conf->osen) && hapd->wpa_auth == NULL) {
136 hostapd_setup_wpa(hapd);
137 if (hapd->wpa_auth)
138 wpa_init_keys(hapd->wpa_auth);
139 } else if (hapd->conf->wpa) {
140 const u8 *wpa_ie;
141 size_t wpa_ie_len;
142 hostapd_reconfig_wpa(hapd);
143 wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
144 if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len))
145 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
146 "the kernel driver.");
147 } else if (hapd->wpa_auth) {
148 wpa_deinit(hapd->wpa_auth);
149 hapd->wpa_auth = NULL;
150 hostapd_set_privacy(hapd, 0);
151 #ifdef CONFIG_WEP
152 hostapd_setup_encryption(hapd->conf->iface, hapd);
153 #endif /* CONFIG_WEP */
154 hostapd_set_generic_elem(hapd, (u8 *) "", 0);
155 }
156
157 ieee802_11_set_beacon(hapd);
158 hostapd_update_wps(hapd);
159
160 if (hapd->conf->ssid.ssid_set &&
161 hostapd_set_ssid(hapd, hapd->conf->ssid.ssid,
162 hapd->conf->ssid.ssid_len)) {
163 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
164 /* try to continue */
165 }
166 wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
167 }
168
169
hostapd_clear_old(struct hostapd_iface * iface)170 static void hostapd_clear_old(struct hostapd_iface *iface)
171 {
172 size_t j;
173
174 /*
175 * Deauthenticate all stations since the new configuration may not
176 * allow them to use the BSS anymore.
177 */
178 for (j = 0; j < iface->num_bss; j++) {
179 hostapd_flush_old_stations(iface->bss[j],
180 WLAN_REASON_PREV_AUTH_NOT_VALID);
181 #ifdef CONFIG_WEP
182 hostapd_broadcast_wep_clear(iface->bss[j]);
183 #endif /* CONFIG_WEP */
184
185 #ifndef CONFIG_NO_RADIUS
186 /* TODO: update dynamic data based on changed configuration
187 * items (e.g., open/close sockets, etc.) */
188 radius_client_flush(iface->bss[j]->radius, 0);
189 #endif /* CONFIG_NO_RADIUS */
190 }
191 }
192
193
hostapd_iface_conf_changed(struct hostapd_config * newconf,struct hostapd_config * oldconf)194 static int hostapd_iface_conf_changed(struct hostapd_config *newconf,
195 struct hostapd_config *oldconf)
196 {
197 size_t i;
198
199 if (newconf->num_bss != oldconf->num_bss)
200 return 1;
201
202 for (i = 0; i < newconf->num_bss; i++) {
203 if (os_strcmp(newconf->bss[i]->iface,
204 oldconf->bss[i]->iface) != 0)
205 return 1;
206 }
207
208 return 0;
209 }
210
211
hostapd_reload_config(struct hostapd_iface * iface)212 int hostapd_reload_config(struct hostapd_iface *iface)
213 {
214 struct hapd_interfaces *interfaces = iface->interfaces;
215 struct hostapd_data *hapd = iface->bss[0];
216 struct hostapd_config *newconf, *oldconf;
217 size_t j;
218
219 if (iface->config_fname == NULL) {
220 /* Only in-memory config in use - assume it has been updated */
221 hostapd_clear_old(iface);
222 for (j = 0; j < iface->num_bss; j++)
223 hostapd_reload_bss(iface->bss[j]);
224 return 0;
225 }
226
227 if (iface->interfaces == NULL ||
228 iface->interfaces->config_read_cb == NULL)
229 return -1;
230 newconf = iface->interfaces->config_read_cb(iface->config_fname);
231 if (newconf == NULL)
232 return -1;
233
234 hostapd_clear_old(iface);
235
236 oldconf = hapd->iconf;
237 if (hostapd_iface_conf_changed(newconf, oldconf)) {
238 char *fname;
239 int res;
240
241 wpa_printf(MSG_DEBUG,
242 "Configuration changes include interface/BSS modification - force full disable+enable sequence");
243 fname = os_strdup(iface->config_fname);
244 if (!fname) {
245 hostapd_config_free(newconf);
246 return -1;
247 }
248 hostapd_remove_iface(interfaces, hapd->conf->iface);
249 iface = hostapd_init(interfaces, fname);
250 os_free(fname);
251 hostapd_config_free(newconf);
252 if (!iface) {
253 wpa_printf(MSG_ERROR,
254 "Failed to initialize interface on config reload");
255 return -1;
256 }
257 iface->interfaces = interfaces;
258 interfaces->iface[interfaces->count] = iface;
259 interfaces->count++;
260 res = hostapd_enable_iface(iface);
261 if (res < 0)
262 wpa_printf(MSG_ERROR,
263 "Failed to enable interface on config reload");
264 return res;
265 }
266 iface->conf = newconf;
267
268 for (j = 0; j < iface->num_bss; j++) {
269 hapd = iface->bss[j];
270 hapd->iconf = newconf;
271 hapd->iconf->channel = oldconf->channel;
272 hapd->iconf->acs = oldconf->acs;
273 hapd->iconf->secondary_channel = oldconf->secondary_channel;
274 hapd->iconf->ieee80211n = oldconf->ieee80211n;
275 hapd->iconf->ieee80211ac = oldconf->ieee80211ac;
276 hapd->iconf->ht_capab = oldconf->ht_capab;
277 hapd->iconf->vht_capab = oldconf->vht_capab;
278 hostapd_set_oper_chwidth(hapd->iconf,
279 hostapd_get_oper_chwidth(oldconf));
280 hostapd_set_oper_centr_freq_seg0_idx(
281 hapd->iconf,
282 hostapd_get_oper_centr_freq_seg0_idx(oldconf));
283 hostapd_set_oper_centr_freq_seg1_idx(
284 hapd->iconf,
285 hostapd_get_oper_centr_freq_seg1_idx(oldconf));
286 hapd->conf = newconf->bss[j];
287 hostapd_reload_bss(hapd);
288 }
289
290 hostapd_config_free(oldconf);
291
292
293 return 0;
294 }
295
296
297 #ifdef CONFIG_WEP
298
hostapd_broadcast_key_clear_iface(struct hostapd_data * hapd,const char * ifname)299 static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
300 const char *ifname)
301 {
302 int i;
303
304 if (!ifname || !hapd->drv_priv)
305 return;
306 for (i = 0; i < NUM_WEP_KEYS; i++) {
307 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i, 0,
308 0, NULL, 0, NULL, 0, KEY_FLAG_GROUP)) {
309 wpa_printf(MSG_DEBUG, "Failed to clear default "
310 "encryption keys (ifname=%s keyidx=%d)",
311 ifname, i);
312 }
313 }
314 if (hapd->conf->ieee80211w) {
315 for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
316 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE,
317 NULL, i, 0, 0, NULL,
318 0, NULL, 0, KEY_FLAG_GROUP)) {
319 wpa_printf(MSG_DEBUG, "Failed to clear "
320 "default mgmt encryption keys "
321 "(ifname=%s keyidx=%d)", ifname, i);
322 }
323 }
324 }
325 }
326
327
hostapd_broadcast_wep_clear(struct hostapd_data * hapd)328 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
329 {
330 hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
331 return 0;
332 }
333
334
hostapd_broadcast_wep_set(struct hostapd_data * hapd)335 static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
336 {
337 int errors = 0, idx;
338 struct hostapd_ssid *ssid = &hapd->conf->ssid;
339
340 idx = ssid->wep.idx;
341 if (ssid->wep.default_len && ssid->wep.key[idx] &&
342 hostapd_drv_set_key(hapd->conf->iface,
343 hapd, WPA_ALG_WEP, broadcast_ether_addr, idx, 0,
344 1, NULL, 0, ssid->wep.key[idx],
345 ssid->wep.len[idx],
346 KEY_FLAG_GROUP_RX_TX_DEFAULT)) {
347 wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
348 errors++;
349 }
350
351 return errors;
352 }
353
354 #endif /* CONFIG_WEP */
355
356
hostapd_free_hapd_data(struct hostapd_data * hapd)357 void hostapd_free_hapd_data(struct hostapd_data *hapd)
358 {
359 os_free(hapd->probereq_cb);
360 hapd->probereq_cb = NULL;
361 hapd->num_probereq_cb = 0;
362
363 #ifdef CONFIG_P2P
364 wpabuf_free(hapd->p2p_beacon_ie);
365 hapd->p2p_beacon_ie = NULL;
366 wpabuf_free(hapd->p2p_probe_resp_ie);
367 hapd->p2p_probe_resp_ie = NULL;
368 #endif /* CONFIG_P2P */
369
370 if (!hapd->started) {
371 wpa_printf(MSG_ERROR, "%s: Interface %s wasn't started",
372 __func__, hapd->conf ? hapd->conf->iface : "N/A");
373 return;
374 }
375 hapd->started = 0;
376 hapd->beacon_set_done = 0;
377
378 wpa_printf(MSG_DEBUG, "%s(%s)", __func__, hapd->conf->iface);
379 accounting_deinit(hapd);
380 hostapd_deinit_wpa(hapd);
381 vlan_deinit(hapd);
382 hostapd_acl_deinit(hapd);
383 #ifndef CONFIG_NO_RADIUS
384 radius_client_deinit(hapd->radius);
385 hapd->radius = NULL;
386 radius_das_deinit(hapd->radius_das);
387 hapd->radius_das = NULL;
388 #endif /* CONFIG_NO_RADIUS */
389
390 hostapd_deinit_wps(hapd);
391 ieee802_1x_dealloc_kay_sm_hapd(hapd);
392 #ifdef CONFIG_DPP
393 hostapd_dpp_deinit(hapd);
394 gas_query_ap_deinit(hapd->gas);
395 #endif /* CONFIG_DPP */
396
397 authsrv_deinit(hapd);
398
399 if (hapd->interface_added) {
400 hapd->interface_added = 0;
401 if (hostapd_if_remove(hapd, WPA_IF_AP_BSS, hapd->conf->iface)) {
402 wpa_printf(MSG_WARNING,
403 "Failed to remove BSS interface %s",
404 hapd->conf->iface);
405 hapd->interface_added = 1;
406 } else {
407 /*
408 * Since this was a dynamically added interface, the
409 * driver wrapper may have removed its internal instance
410 * and hapd->drv_priv is not valid anymore.
411 */
412 hapd->drv_priv = NULL;
413 }
414 }
415
416 wpabuf_free(hapd->time_adv);
417
418 #ifdef CONFIG_INTERWORKING
419 gas_serv_deinit(hapd);
420 #endif /* CONFIG_INTERWORKING */
421
422 bss_load_update_deinit(hapd);
423 ndisc_snoop_deinit(hapd);
424 dhcp_snoop_deinit(hapd);
425 x_snoop_deinit(hapd);
426
427 #ifdef CONFIG_SQLITE
428 bin_clear_free(hapd->tmp_eap_user.identity,
429 hapd->tmp_eap_user.identity_len);
430 bin_clear_free(hapd->tmp_eap_user.password,
431 hapd->tmp_eap_user.password_len);
432 #endif /* CONFIG_SQLITE */
433
434 #ifdef CONFIG_MESH
435 wpabuf_free(hapd->mesh_pending_auth);
436 hapd->mesh_pending_auth = NULL;
437 /* handling setup failure is already done */
438 hapd->setup_complete_cb = NULL;
439 #endif /* CONFIG_MESH */
440
441 hostapd_clean_rrm(hapd);
442 fils_hlp_deinit(hapd);
443
444 #ifdef CONFIG_OCV
445 eloop_cancel_timeout(hostapd_ocv_check_csa_sa_query, hapd, NULL);
446 #endif /* CONFIG_OCV */
447
448 #ifdef CONFIG_SAE
449 {
450 struct hostapd_sae_commit_queue *q;
451
452 while ((q = dl_list_first(&hapd->sae_commit_queue,
453 struct hostapd_sae_commit_queue,
454 list))) {
455 dl_list_del(&q->list);
456 os_free(q);
457 }
458 }
459 eloop_cancel_timeout(auth_sae_process_commit, hapd, NULL);
460 #endif /* CONFIG_SAE */
461 }
462
463
464 /**
465 * hostapd_cleanup - Per-BSS cleanup (deinitialization)
466 * @hapd: Pointer to BSS data
467 *
468 * This function is used to free all per-BSS data structures and resources.
469 * Most of the modules that are initialized in hostapd_setup_bss() are
470 * deinitialized here.
471 */
hostapd_cleanup(struct hostapd_data * hapd)472 static void hostapd_cleanup(struct hostapd_data *hapd)
473 {
474 wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s))", __func__, hapd,
475 hapd->conf ? hapd->conf->iface : "N/A");
476 if (hapd->iface->interfaces &&
477 hapd->iface->interfaces->ctrl_iface_deinit) {
478 wpa_msg(hapd->msg_ctx, MSG_INFO, WPA_EVENT_TERMINATING);
479 hapd->iface->interfaces->ctrl_iface_deinit(hapd);
480 }
481 hostapd_free_hapd_data(hapd);
482 }
483
484
sta_track_deinit(struct hostapd_iface * iface)485 static void sta_track_deinit(struct hostapd_iface *iface)
486 {
487 struct hostapd_sta_info *info;
488
489 if (!iface->num_sta_seen)
490 return;
491
492 while ((info = dl_list_first(&iface->sta_seen, struct hostapd_sta_info,
493 list))) {
494 dl_list_del(&info->list);
495 iface->num_sta_seen--;
496 sta_track_del(info);
497 }
498 }
499
500
hostapd_cleanup_iface_partial(struct hostapd_iface * iface)501 void hostapd_cleanup_iface_partial(struct hostapd_iface *iface)
502 {
503 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
504 #ifdef NEED_AP_MLME
505 hostapd_stop_setup_timers(iface);
506 #endif /* NEED_AP_MLME */
507 if (iface->current_mode)
508 acs_cleanup(iface);
509 hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
510 iface->hw_features = NULL;
511 iface->current_mode = NULL;
512 os_free(iface->current_rates);
513 iface->current_rates = NULL;
514 os_free(iface->basic_rates);
515 iface->basic_rates = NULL;
516 ap_list_deinit(iface);
517 sta_track_deinit(iface);
518 airtime_policy_update_deinit(iface);
519 }
520
521
522 /**
523 * hostapd_cleanup_iface - Complete per-interface cleanup
524 * @iface: Pointer to interface data
525 *
526 * This function is called after per-BSS data structures are deinitialized
527 * with hostapd_cleanup().
528 */
hostapd_cleanup_iface(struct hostapd_iface * iface)529 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
530 {
531 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
532 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
533 eloop_cancel_timeout(hostapd_interface_setup_failure_handler, iface,
534 NULL);
535
536 hostapd_cleanup_iface_partial(iface);
537 hostapd_config_free(iface->conf);
538 iface->conf = NULL;
539
540 os_free(iface->config_fname);
541 os_free(iface->bss);
542 wpa_printf(MSG_DEBUG, "%s: free iface=%p", __func__, iface);
543 os_free(iface);
544 }
545
546
547 #ifdef CONFIG_WEP
548
hostapd_clear_wep(struct hostapd_data * hapd)549 static void hostapd_clear_wep(struct hostapd_data *hapd)
550 {
551 if (hapd->drv_priv && !hapd->iface->driver_ap_teardown && hapd->conf) {
552 hostapd_set_privacy(hapd, 0);
553 hostapd_broadcast_wep_clear(hapd);
554 }
555 }
556
557
hostapd_setup_encryption(char * iface,struct hostapd_data * hapd)558 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
559 {
560 int i;
561
562 hostapd_broadcast_wep_set(hapd);
563
564 if (hapd->conf->ssid.wep.default_len) {
565 hostapd_set_privacy(hapd, 1);
566 return 0;
567 }
568
569 /*
570 * When IEEE 802.1X is not enabled, the driver may need to know how to
571 * set authentication algorithms for static WEP.
572 */
573 hostapd_drv_set_authmode(hapd, hapd->conf->auth_algs);
574
575 for (i = 0; i < 4; i++) {
576 if (hapd->conf->ssid.wep.key[i] &&
577 hostapd_drv_set_key(iface, hapd, WPA_ALG_WEP, NULL, i, 0,
578 i == hapd->conf->ssid.wep.idx, NULL, 0,
579 hapd->conf->ssid.wep.key[i],
580 hapd->conf->ssid.wep.len[i],
581 i == hapd->conf->ssid.wep.idx ?
582 KEY_FLAG_GROUP_RX_TX_DEFAULT :
583 KEY_FLAG_GROUP_RX_TX)) {
584 wpa_printf(MSG_WARNING, "Could not set WEP "
585 "encryption.");
586 return -1;
587 }
588 if (hapd->conf->ssid.wep.key[i] &&
589 i == hapd->conf->ssid.wep.idx)
590 hostapd_set_privacy(hapd, 1);
591 }
592
593 return 0;
594 }
595
596 #endif /* CONFIG_WEP */
597
598
hostapd_flush_old_stations(struct hostapd_data * hapd,u16 reason)599 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason)
600 {
601 int ret = 0;
602 u8 addr[ETH_ALEN];
603
604 if (hostapd_drv_none(hapd) || hapd->drv_priv == NULL)
605 return 0;
606
607 if (!hapd->iface->driver_ap_teardown) {
608 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
609 "Flushing old station entries");
610
611 if (hostapd_flush(hapd)) {
612 wpa_msg(hapd->msg_ctx, MSG_WARNING,
613 "Could not connect to kernel driver");
614 ret = -1;
615 }
616 }
617 if (hapd->conf && hapd->conf->broadcast_deauth) {
618 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
619 "Deauthenticate all stations");
620 os_memset(addr, 0xff, ETH_ALEN);
621 hostapd_drv_sta_deauth(hapd, addr, reason);
622 }
623 hostapd_free_stas(hapd);
624
625 return ret;
626 }
627
628
hostapd_bss_deinit_no_free(struct hostapd_data * hapd)629 void hostapd_bss_deinit_no_free(struct hostapd_data *hapd)
630 {
631 hostapd_free_stas(hapd);
632 hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
633 #ifdef CONFIG_WEP
634 hostapd_clear_wep(hapd);
635 #endif /* CONFIG_WEP */
636 }
637
638
639 /**
640 * hostapd_validate_bssid_configuration - Validate BSSID configuration
641 * @iface: Pointer to interface data
642 * Returns: 0 on success, -1 on failure
643 *
644 * This function is used to validate that the configured BSSIDs are valid.
645 */
hostapd_validate_bssid_configuration(struct hostapd_iface * iface)646 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
647 {
648 u8 mask[ETH_ALEN] = { 0 };
649 struct hostapd_data *hapd = iface->bss[0];
650 unsigned int i = iface->conf->num_bss, bits = 0, j;
651 int auto_addr = 0;
652
653 if (hostapd_drv_none(hapd))
654 return 0;
655
656 if (iface->conf->use_driver_iface_addr)
657 return 0;
658
659 /* Generate BSSID mask that is large enough to cover the BSSIDs. */
660
661 /* Determine the bits necessary to cover the number of BSSIDs. */
662 for (i--; i; i >>= 1)
663 bits++;
664
665 /* Determine the bits necessary to any configured BSSIDs,
666 if they are higher than the number of BSSIDs. */
667 for (j = 0; j < iface->conf->num_bss; j++) {
668 if (is_zero_ether_addr(iface->conf->bss[j]->bssid)) {
669 if (j)
670 auto_addr++;
671 continue;
672 }
673
674 for (i = 0; i < ETH_ALEN; i++) {
675 mask[i] |=
676 iface->conf->bss[j]->bssid[i] ^
677 hapd->own_addr[i];
678 }
679 }
680
681 if (!auto_addr)
682 goto skip_mask_ext;
683
684 for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
685 ;
686 j = 0;
687 if (i < ETH_ALEN) {
688 j = (5 - i) * 8;
689
690 while (mask[i] != 0) {
691 mask[i] >>= 1;
692 j++;
693 }
694 }
695
696 if (bits < j)
697 bits = j;
698
699 if (bits > 40) {
700 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
701 bits);
702 return -1;
703 }
704
705 os_memset(mask, 0xff, ETH_ALEN);
706 j = bits / 8;
707 for (i = 5; i > 5 - j; i--)
708 mask[i] = 0;
709 j = bits % 8;
710 while (j) {
711 j--;
712 mask[i] <<= 1;
713 }
714
715 skip_mask_ext:
716 wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
717 (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
718
719 if (!auto_addr)
720 return 0;
721
722 for (i = 0; i < ETH_ALEN; i++) {
723 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
724 wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
725 " for start address " MACSTR ".",
726 MAC2STR(mask), MAC2STR(hapd->own_addr));
727 wpa_printf(MSG_ERROR, "Start address must be the "
728 "first address in the block (i.e., addr "
729 "AND mask == addr).");
730 return -1;
731 }
732 }
733
734 return 0;
735 }
736
737
mac_in_conf(struct hostapd_config * conf,const void * a)738 static int mac_in_conf(struct hostapd_config *conf, const void *a)
739 {
740 size_t i;
741
742 for (i = 0; i < conf->num_bss; i++) {
743 if (hostapd_mac_comp(conf->bss[i]->bssid, a) == 0) {
744 return 1;
745 }
746 }
747
748 return 0;
749 }
750
751
752 #ifndef CONFIG_NO_RADIUS
753
hostapd_das_nas_mismatch(struct hostapd_data * hapd,struct radius_das_attrs * attr)754 static int hostapd_das_nas_mismatch(struct hostapd_data *hapd,
755 struct radius_das_attrs *attr)
756 {
757 if (attr->nas_identifier &&
758 (!hapd->conf->nas_identifier ||
759 os_strlen(hapd->conf->nas_identifier) !=
760 attr->nas_identifier_len ||
761 os_memcmp(hapd->conf->nas_identifier, attr->nas_identifier,
762 attr->nas_identifier_len) != 0)) {
763 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-Identifier mismatch");
764 return 1;
765 }
766
767 if (attr->nas_ip_addr &&
768 (hapd->conf->own_ip_addr.af != AF_INET ||
769 os_memcmp(&hapd->conf->own_ip_addr.u.v4, attr->nas_ip_addr, 4) !=
770 0)) {
771 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IP-Address mismatch");
772 return 1;
773 }
774
775 #ifdef CONFIG_IPV6
776 if (attr->nas_ipv6_addr &&
777 (hapd->conf->own_ip_addr.af != AF_INET6 ||
778 os_memcmp(&hapd->conf->own_ip_addr.u.v6, attr->nas_ipv6_addr, 16)
779 != 0)) {
780 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IPv6-Address mismatch");
781 return 1;
782 }
783 #endif /* CONFIG_IPV6 */
784
785 return 0;
786 }
787
788
hostapd_das_find_sta(struct hostapd_data * hapd,struct radius_das_attrs * attr,int * multi)789 static struct sta_info * hostapd_das_find_sta(struct hostapd_data *hapd,
790 struct radius_das_attrs *attr,
791 int *multi)
792 {
793 struct sta_info *selected, *sta;
794 char buf[128];
795 int num_attr = 0;
796 int count;
797
798 *multi = 0;
799
800 for (sta = hapd->sta_list; sta; sta = sta->next)
801 sta->radius_das_match = 1;
802
803 if (attr->sta_addr) {
804 num_attr++;
805 sta = ap_get_sta(hapd, attr->sta_addr);
806 if (!sta) {
807 wpa_printf(MSG_DEBUG,
808 "RADIUS DAS: No Calling-Station-Id match");
809 return NULL;
810 }
811
812 selected = sta;
813 for (sta = hapd->sta_list; sta; sta = sta->next) {
814 if (sta != selected)
815 sta->radius_das_match = 0;
816 }
817 wpa_printf(MSG_DEBUG, "RADIUS DAS: Calling-Station-Id match");
818 }
819
820 if (attr->acct_session_id) {
821 num_attr++;
822 if (attr->acct_session_id_len != 16) {
823 wpa_printf(MSG_DEBUG,
824 "RADIUS DAS: Acct-Session-Id cannot match");
825 return NULL;
826 }
827 count = 0;
828
829 for (sta = hapd->sta_list; sta; sta = sta->next) {
830 if (!sta->radius_das_match)
831 continue;
832 os_snprintf(buf, sizeof(buf), "%016llX",
833 (unsigned long long) sta->acct_session_id);
834 if (os_memcmp(attr->acct_session_id, buf, 16) != 0)
835 sta->radius_das_match = 0;
836 else
837 count++;
838 }
839
840 if (count == 0) {
841 wpa_printf(MSG_DEBUG,
842 "RADIUS DAS: No matches remaining after Acct-Session-Id check");
843 return NULL;
844 }
845 wpa_printf(MSG_DEBUG, "RADIUS DAS: Acct-Session-Id match");
846 }
847
848 if (attr->acct_multi_session_id) {
849 num_attr++;
850 if (attr->acct_multi_session_id_len != 16) {
851 wpa_printf(MSG_DEBUG,
852 "RADIUS DAS: Acct-Multi-Session-Id cannot match");
853 return NULL;
854 }
855 count = 0;
856
857 for (sta = hapd->sta_list; sta; sta = sta->next) {
858 if (!sta->radius_das_match)
859 continue;
860 if (!sta->eapol_sm ||
861 !sta->eapol_sm->acct_multi_session_id) {
862 sta->radius_das_match = 0;
863 continue;
864 }
865 os_snprintf(buf, sizeof(buf), "%016llX",
866 (unsigned long long)
867 sta->eapol_sm->acct_multi_session_id);
868 if (os_memcmp(attr->acct_multi_session_id, buf, 16) !=
869 0)
870 sta->radius_das_match = 0;
871 else
872 count++;
873 }
874
875 if (count == 0) {
876 wpa_printf(MSG_DEBUG,
877 "RADIUS DAS: No matches remaining after Acct-Multi-Session-Id check");
878 return NULL;
879 }
880 wpa_printf(MSG_DEBUG,
881 "RADIUS DAS: Acct-Multi-Session-Id match");
882 }
883
884 if (attr->cui) {
885 num_attr++;
886 count = 0;
887
888 for (sta = hapd->sta_list; sta; sta = sta->next) {
889 struct wpabuf *cui;
890
891 if (!sta->radius_das_match)
892 continue;
893 cui = ieee802_1x_get_radius_cui(sta->eapol_sm);
894 if (!cui || wpabuf_len(cui) != attr->cui_len ||
895 os_memcmp(wpabuf_head(cui), attr->cui,
896 attr->cui_len) != 0)
897 sta->radius_das_match = 0;
898 else
899 count++;
900 }
901
902 if (count == 0) {
903 wpa_printf(MSG_DEBUG,
904 "RADIUS DAS: No matches remaining after Chargeable-User-Identity check");
905 return NULL;
906 }
907 wpa_printf(MSG_DEBUG,
908 "RADIUS DAS: Chargeable-User-Identity match");
909 }
910
911 if (attr->user_name) {
912 num_attr++;
913 count = 0;
914
915 for (sta = hapd->sta_list; sta; sta = sta->next) {
916 u8 *identity;
917 size_t identity_len;
918
919 if (!sta->radius_das_match)
920 continue;
921 identity = ieee802_1x_get_identity(sta->eapol_sm,
922 &identity_len);
923 if (!identity ||
924 identity_len != attr->user_name_len ||
925 os_memcmp(identity, attr->user_name, identity_len)
926 != 0)
927 sta->radius_das_match = 0;
928 else
929 count++;
930 }
931
932 if (count == 0) {
933 wpa_printf(MSG_DEBUG,
934 "RADIUS DAS: No matches remaining after User-Name check");
935 return NULL;
936 }
937 wpa_printf(MSG_DEBUG,
938 "RADIUS DAS: User-Name match");
939 }
940
941 if (num_attr == 0) {
942 /*
943 * In theory, we could match all current associations, but it
944 * seems safer to just reject requests that do not include any
945 * session identification attributes.
946 */
947 wpa_printf(MSG_DEBUG,
948 "RADIUS DAS: No session identification attributes included");
949 return NULL;
950 }
951
952 selected = NULL;
953 for (sta = hapd->sta_list; sta; sta = sta->next) {
954 if (sta->radius_das_match) {
955 if (selected) {
956 *multi = 1;
957 return NULL;
958 }
959 selected = sta;
960 }
961 }
962
963 return selected;
964 }
965
966
hostapd_das_disconnect_pmksa(struct hostapd_data * hapd,struct radius_das_attrs * attr)967 static int hostapd_das_disconnect_pmksa(struct hostapd_data *hapd,
968 struct radius_das_attrs *attr)
969 {
970 if (!hapd->wpa_auth)
971 return -1;
972 return wpa_auth_radius_das_disconnect_pmksa(hapd->wpa_auth, attr);
973 }
974
975
976 static enum radius_das_res
hostapd_das_disconnect(void * ctx,struct radius_das_attrs * attr)977 hostapd_das_disconnect(void *ctx, struct radius_das_attrs *attr)
978 {
979 struct hostapd_data *hapd = ctx;
980 struct sta_info *sta;
981 int multi;
982
983 if (hostapd_das_nas_mismatch(hapd, attr))
984 return RADIUS_DAS_NAS_MISMATCH;
985
986 sta = hostapd_das_find_sta(hapd, attr, &multi);
987 if (sta == NULL) {
988 if (multi) {
989 wpa_printf(MSG_DEBUG,
990 "RADIUS DAS: Multiple sessions match - not supported");
991 return RADIUS_DAS_MULTI_SESSION_MATCH;
992 }
993 if (hostapd_das_disconnect_pmksa(hapd, attr) == 0) {
994 wpa_printf(MSG_DEBUG,
995 "RADIUS DAS: PMKSA cache entry matched");
996 return RADIUS_DAS_SUCCESS;
997 }
998 wpa_printf(MSG_DEBUG, "RADIUS DAS: No matching session found");
999 return RADIUS_DAS_SESSION_NOT_FOUND;
1000 }
1001
1002 wpa_printf(MSG_DEBUG, "RADIUS DAS: Found a matching session " MACSTR
1003 " - disconnecting", MAC2STR(sta->addr));
1004 wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
1005
1006 hostapd_drv_sta_deauth(hapd, sta->addr,
1007 WLAN_REASON_PREV_AUTH_NOT_VALID);
1008 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_PREV_AUTH_NOT_VALID);
1009
1010 return RADIUS_DAS_SUCCESS;
1011 }
1012
1013
1014 #ifdef CONFIG_HS20
1015 static enum radius_das_res
hostapd_das_coa(void * ctx,struct radius_das_attrs * attr)1016 hostapd_das_coa(void *ctx, struct radius_das_attrs *attr)
1017 {
1018 struct hostapd_data *hapd = ctx;
1019 struct sta_info *sta;
1020 int multi;
1021
1022 if (hostapd_das_nas_mismatch(hapd, attr))
1023 return RADIUS_DAS_NAS_MISMATCH;
1024
1025 sta = hostapd_das_find_sta(hapd, attr, &multi);
1026 if (!sta) {
1027 if (multi) {
1028 wpa_printf(MSG_DEBUG,
1029 "RADIUS DAS: Multiple sessions match - not supported");
1030 return RADIUS_DAS_MULTI_SESSION_MATCH;
1031 }
1032 wpa_printf(MSG_DEBUG, "RADIUS DAS: No matching session found");
1033 return RADIUS_DAS_SESSION_NOT_FOUND;
1034 }
1035
1036 wpa_printf(MSG_DEBUG, "RADIUS DAS: Found a matching session " MACSTR
1037 " - CoA", MAC2STR(sta->addr));
1038
1039 if (attr->hs20_t_c_filtering) {
1040 if (attr->hs20_t_c_filtering[0] & BIT(0)) {
1041 wpa_printf(MSG_DEBUG,
1042 "HS 2.0: Unexpected Terms and Conditions filtering required in CoA-Request");
1043 return RADIUS_DAS_COA_FAILED;
1044 }
1045
1046 hs20_t_c_filtering(hapd, sta, 0);
1047 }
1048
1049 return RADIUS_DAS_SUCCESS;
1050 }
1051 #else /* CONFIG_HS20 */
1052 #define hostapd_das_coa NULL
1053 #endif /* CONFIG_HS20 */
1054
1055
1056 #ifdef CONFIG_SQLITE
1057
db_table_exists(sqlite3 * db,const char * name)1058 static int db_table_exists(sqlite3 *db, const char *name)
1059 {
1060 char cmd[128];
1061
1062 os_snprintf(cmd, sizeof(cmd), "SELECT 1 FROM %s;", name);
1063 return sqlite3_exec(db, cmd, NULL, NULL, NULL) == SQLITE_OK;
1064 }
1065
1066
db_table_create_radius_attributes(sqlite3 * db)1067 static int db_table_create_radius_attributes(sqlite3 *db)
1068 {
1069 char *err = NULL;
1070 const char *sql =
1071 "CREATE TABLE radius_attributes("
1072 " id INTEGER PRIMARY KEY,"
1073 " sta TEXT,"
1074 " reqtype TEXT,"
1075 " attr TEXT"
1076 ");"
1077 "CREATE INDEX idx_sta_reqtype ON radius_attributes(sta,reqtype);";
1078
1079 wpa_printf(MSG_DEBUG,
1080 "Adding database table for RADIUS attribute information");
1081 if (sqlite3_exec(db, sql, NULL, NULL, &err) != SQLITE_OK) {
1082 wpa_printf(MSG_ERROR, "SQLite error: %s", err);
1083 sqlite3_free(err);
1084 return -1;
1085 }
1086
1087 return 0;
1088 }
1089
1090 #endif /* CONFIG_SQLITE */
1091
1092 #endif /* CONFIG_NO_RADIUS */
1093
1094
1095 /**
1096 * hostapd_setup_bss - Per-BSS setup (initialization)
1097 * @hapd: Pointer to BSS data
1098 * @first: Whether this BSS is the first BSS of an interface; -1 = not first,
1099 * but interface may exist
1100 *
1101 * This function is used to initialize all per-BSS data structures and
1102 * resources. This gets called in a loop for each BSS when an interface is
1103 * initialized. Most of the modules that are initialized here will be
1104 * deinitialized in hostapd_cleanup().
1105 */
hostapd_setup_bss(struct hostapd_data * hapd,int first)1106 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
1107 {
1108 struct hostapd_bss_config *conf = hapd->conf;
1109 u8 ssid[SSID_MAX_LEN + 1];
1110 int ssid_len, set_ssid;
1111 char force_ifname[IFNAMSIZ];
1112 u8 if_addr[ETH_ALEN];
1113 int flush_old_stations = 1;
1114
1115 wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s), first=%d)",
1116 __func__, hapd, conf->iface, first);
1117
1118 #ifdef EAP_SERVER_TNC
1119 if (conf->tnc && tncs_global_init() < 0) {
1120 wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
1121 return -1;
1122 }
1123 #endif /* EAP_SERVER_TNC */
1124
1125 if (hapd->started) {
1126 wpa_printf(MSG_ERROR, "%s: Interface %s was already started",
1127 __func__, conf->iface);
1128 return -1;
1129 }
1130 hapd->started = 1;
1131
1132 if (!first || first == -1) {
1133 u8 *addr = hapd->own_addr;
1134
1135 if (!is_zero_ether_addr(conf->bssid)) {
1136 /* Allocate the configured BSSID. */
1137 os_memcpy(hapd->own_addr, conf->bssid, ETH_ALEN);
1138
1139 if (hostapd_mac_comp(hapd->own_addr,
1140 hapd->iface->bss[0]->own_addr) ==
1141 0) {
1142 wpa_printf(MSG_ERROR, "BSS '%s' may not have "
1143 "BSSID set to the MAC address of "
1144 "the radio", conf->iface);
1145 return -1;
1146 }
1147 } else if (hapd->iconf->use_driver_iface_addr) {
1148 addr = NULL;
1149 } else {
1150 /* Allocate the next available BSSID. */
1151 do {
1152 inc_byte_array(hapd->own_addr, ETH_ALEN);
1153 } while (mac_in_conf(hapd->iconf, hapd->own_addr));
1154 }
1155
1156 hapd->interface_added = 1;
1157 if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS,
1158 conf->iface, addr, hapd,
1159 &hapd->drv_priv, force_ifname, if_addr,
1160 conf->bridge[0] ? conf->bridge : NULL,
1161 first == -1)) {
1162 wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
1163 MACSTR ")", MAC2STR(hapd->own_addr));
1164 hapd->interface_added = 0;
1165 return -1;
1166 }
1167
1168 if (!addr)
1169 os_memcpy(hapd->own_addr, if_addr, ETH_ALEN);
1170 }
1171
1172 if (conf->wmm_enabled < 0)
1173 conf->wmm_enabled = hapd->iconf->ieee80211n;
1174
1175 #ifdef CONFIG_IEEE80211R_AP
1176 if (is_zero_ether_addr(conf->r1_key_holder))
1177 os_memcpy(conf->r1_key_holder, hapd->own_addr, ETH_ALEN);
1178 #endif /* CONFIG_IEEE80211R_AP */
1179
1180 #ifdef CONFIG_MESH
1181 if ((hapd->conf->mesh & MESH_ENABLED) && hapd->iface->mconf == NULL)
1182 flush_old_stations = 0;
1183 #endif /* CONFIG_MESH */
1184
1185 if (flush_old_stations)
1186 hostapd_flush(hapd);
1187 hostapd_set_privacy(hapd, 0);
1188
1189 #ifdef CONFIG_WEP
1190 if (!hostapd_drv_nl80211(hapd))
1191 hostapd_broadcast_wep_clear(hapd);
1192 if (hostapd_setup_encryption(conf->iface, hapd))
1193 return -1;
1194 #endif /* CONFIG_WEP */
1195
1196 /*
1197 * Fetch the SSID from the system and use it or,
1198 * if one was specified in the config file, verify they
1199 * match.
1200 */
1201 ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
1202 if (ssid_len < 0) {
1203 wpa_printf(MSG_ERROR, "Could not read SSID from system");
1204 return -1;
1205 }
1206 if (conf->ssid.ssid_set) {
1207 /*
1208 * If SSID is specified in the config file and it differs
1209 * from what is being used then force installation of the
1210 * new SSID.
1211 */
1212 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
1213 os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
1214 } else {
1215 /*
1216 * No SSID in the config file; just use the one we got
1217 * from the system.
1218 */
1219 set_ssid = 0;
1220 conf->ssid.ssid_len = ssid_len;
1221 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
1222 }
1223
1224 /*
1225 * Short SSID calculation is identical to FCS and it is defined in
1226 * IEEE P802.11-REVmd/D3.0, 9.4.2.170.3 (Calculating the Short-SSID).
1227 */
1228 conf->ssid.short_ssid = crc32(conf->ssid.ssid, conf->ssid.ssid_len);
1229
1230 if (!hostapd_drv_none(hapd)) {
1231 wpa_printf(MSG_DEBUG, "Using interface %s with hwaddr " MACSTR
1232 " and ssid \"%s\"",
1233 conf->iface, MAC2STR(hapd->own_addr),
1234 wpa_ssid_txt(conf->ssid.ssid, conf->ssid.ssid_len));
1235 }
1236
1237 if (hostapd_setup_wpa_psk(conf)) {
1238 wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
1239 return -1;
1240 }
1241
1242 /* Set SSID for the kernel driver (to be used in beacon and probe
1243 * response frames) */
1244 if (set_ssid && hostapd_set_ssid(hapd, conf->ssid.ssid,
1245 conf->ssid.ssid_len)) {
1246 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
1247 return -1;
1248 }
1249
1250 if (wpa_debug_level <= MSG_MSGDUMP)
1251 conf->radius->msg_dumps = 1;
1252 #ifndef CONFIG_NO_RADIUS
1253
1254 #ifdef CONFIG_SQLITE
1255 if (conf->radius_req_attr_sqlite) {
1256 if (sqlite3_open(conf->radius_req_attr_sqlite,
1257 &hapd->rad_attr_db)) {
1258 wpa_printf(MSG_ERROR, "Could not open SQLite file '%s'",
1259 conf->radius_req_attr_sqlite);
1260 return -1;
1261 }
1262
1263 wpa_printf(MSG_DEBUG, "Opening RADIUS attribute database: %s",
1264 conf->radius_req_attr_sqlite);
1265 if (!db_table_exists(hapd->rad_attr_db, "radius_attributes") &&
1266 db_table_create_radius_attributes(hapd->rad_attr_db) < 0)
1267 return -1;
1268 }
1269 #endif /* CONFIG_SQLITE */
1270
1271 hapd->radius = radius_client_init(hapd, conf->radius);
1272 if (hapd->radius == NULL) {
1273 wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
1274 return -1;
1275 }
1276
1277 if (conf->radius_das_port) {
1278 struct radius_das_conf das_conf;
1279 os_memset(&das_conf, 0, sizeof(das_conf));
1280 das_conf.port = conf->radius_das_port;
1281 das_conf.shared_secret = conf->radius_das_shared_secret;
1282 das_conf.shared_secret_len =
1283 conf->radius_das_shared_secret_len;
1284 das_conf.client_addr = &conf->radius_das_client_addr;
1285 das_conf.time_window = conf->radius_das_time_window;
1286 das_conf.require_event_timestamp =
1287 conf->radius_das_require_event_timestamp;
1288 das_conf.require_message_authenticator =
1289 conf->radius_das_require_message_authenticator;
1290 das_conf.ctx = hapd;
1291 das_conf.disconnect = hostapd_das_disconnect;
1292 das_conf.coa = hostapd_das_coa;
1293 hapd->radius_das = radius_das_init(&das_conf);
1294 if (hapd->radius_das == NULL) {
1295 wpa_printf(MSG_ERROR, "RADIUS DAS initialization "
1296 "failed.");
1297 return -1;
1298 }
1299 }
1300 #endif /* CONFIG_NO_RADIUS */
1301
1302 if (hostapd_acl_init(hapd)) {
1303 wpa_printf(MSG_ERROR, "ACL initialization failed.");
1304 return -1;
1305 }
1306 if (hostapd_init_wps(hapd, conf))
1307 return -1;
1308
1309 #ifdef CONFIG_DPP
1310 hapd->gas = gas_query_ap_init(hapd, hapd->msg_ctx);
1311 if (!hapd->gas)
1312 return -1;
1313 if (hostapd_dpp_init(hapd))
1314 return -1;
1315 #endif /* CONFIG_DPP */
1316
1317 if (authsrv_init(hapd) < 0)
1318 return -1;
1319
1320 if (ieee802_1x_init(hapd)) {
1321 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
1322 return -1;
1323 }
1324
1325 if ((conf->wpa || conf->osen) && hostapd_setup_wpa(hapd))
1326 return -1;
1327
1328 if (accounting_init(hapd)) {
1329 wpa_printf(MSG_ERROR, "Accounting initialization failed.");
1330 return -1;
1331 }
1332
1333 #ifdef CONFIG_INTERWORKING
1334 if (gas_serv_init(hapd)) {
1335 wpa_printf(MSG_ERROR, "GAS server initialization failed");
1336 return -1;
1337 }
1338
1339 if (conf->qos_map_set_len &&
1340 hostapd_drv_set_qos_map(hapd, conf->qos_map_set,
1341 conf->qos_map_set_len)) {
1342 wpa_printf(MSG_ERROR, "Failed to initialize QoS Map");
1343 return -1;
1344 }
1345 #endif /* CONFIG_INTERWORKING */
1346
1347 if (conf->bss_load_update_period && bss_load_update_init(hapd)) {
1348 wpa_printf(MSG_ERROR, "BSS Load initialization failed");
1349 return -1;
1350 }
1351
1352 if (conf->proxy_arp) {
1353 if (x_snoop_init(hapd)) {
1354 wpa_printf(MSG_ERROR,
1355 "Generic snooping infrastructure initialization failed");
1356 return -1;
1357 }
1358
1359 if (dhcp_snoop_init(hapd)) {
1360 wpa_printf(MSG_ERROR,
1361 "DHCP snooping initialization failed");
1362 return -1;
1363 }
1364
1365 if (ndisc_snoop_init(hapd)) {
1366 wpa_printf(MSG_ERROR,
1367 "Neighbor Discovery snooping initialization failed");
1368 return -1;
1369 }
1370 }
1371
1372 if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
1373 wpa_printf(MSG_ERROR, "VLAN initialization failed.");
1374 return -1;
1375 }
1376
1377 if (!conf->start_disabled && ieee802_11_set_beacon(hapd) < 0)
1378 return -1;
1379
1380 if (flush_old_stations && !conf->start_disabled &&
1381 conf->broadcast_deauth) {
1382 u8 addr[ETH_ALEN];
1383
1384 /* Should any previously associated STA not have noticed that
1385 * the AP had stopped and restarted, send one more
1386 * deauthentication notification now that the AP is ready to
1387 * operate. */
1388 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
1389 "Deauthenticate all stations at BSS start");
1390 os_memset(addr, 0xff, ETH_ALEN);
1391 hostapd_drv_sta_deauth(hapd, addr,
1392 WLAN_REASON_PREV_AUTH_NOT_VALID);
1393 }
1394
1395 if (hapd->wpa_auth && wpa_init_keys(hapd->wpa_auth) < 0)
1396 return -1;
1397
1398 if (hapd->driver && hapd->driver->set_operstate)
1399 hapd->driver->set_operstate(hapd->drv_priv, 1);
1400
1401 return 0;
1402 }
1403
1404
hostapd_tx_queue_params(struct hostapd_iface * iface)1405 static void hostapd_tx_queue_params(struct hostapd_iface *iface)
1406 {
1407 struct hostapd_data *hapd = iface->bss[0];
1408 int i;
1409 struct hostapd_tx_queue_params *p;
1410
1411 #ifdef CONFIG_MESH
1412 if ((hapd->conf->mesh & MESH_ENABLED) && iface->mconf == NULL)
1413 return;
1414 #endif /* CONFIG_MESH */
1415
1416 for (i = 0; i < NUM_TX_QUEUES; i++) {
1417 p = &iface->conf->tx_queue[i];
1418
1419 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
1420 p->cwmax, p->burst)) {
1421 wpa_printf(MSG_DEBUG, "Failed to set TX queue "
1422 "parameters for queue %d.", i);
1423 /* Continue anyway */
1424 }
1425 }
1426 }
1427
1428
hostapd_set_acl_list(struct hostapd_data * hapd,struct mac_acl_entry * mac_acl,int n_entries,u8 accept_acl)1429 static int hostapd_set_acl_list(struct hostapd_data *hapd,
1430 struct mac_acl_entry *mac_acl,
1431 int n_entries, u8 accept_acl)
1432 {
1433 struct hostapd_acl_params *acl_params;
1434 int i, err;
1435
1436 acl_params = os_zalloc(sizeof(*acl_params) +
1437 (n_entries * sizeof(acl_params->mac_acl[0])));
1438 if (!acl_params)
1439 return -ENOMEM;
1440
1441 for (i = 0; i < n_entries; i++)
1442 os_memcpy(acl_params->mac_acl[i].addr, mac_acl[i].addr,
1443 ETH_ALEN);
1444
1445 acl_params->acl_policy = accept_acl;
1446 acl_params->num_mac_acl = n_entries;
1447
1448 err = hostapd_drv_set_acl(hapd, acl_params);
1449
1450 os_free(acl_params);
1451
1452 return err;
1453 }
1454
1455
hostapd_set_acl(struct hostapd_data * hapd)1456 static void hostapd_set_acl(struct hostapd_data *hapd)
1457 {
1458 struct hostapd_config *conf = hapd->iconf;
1459 int err;
1460 u8 accept_acl;
1461
1462 if (hapd->iface->drv_max_acl_mac_addrs == 0)
1463 return;
1464
1465 if (conf->bss[0]->macaddr_acl == DENY_UNLESS_ACCEPTED) {
1466 accept_acl = 1;
1467 err = hostapd_set_acl_list(hapd, conf->bss[0]->accept_mac,
1468 conf->bss[0]->num_accept_mac,
1469 accept_acl);
1470 if (err) {
1471 wpa_printf(MSG_DEBUG, "Failed to set accept acl");
1472 return;
1473 }
1474 } else if (conf->bss[0]->macaddr_acl == ACCEPT_UNLESS_DENIED) {
1475 accept_acl = 0;
1476 err = hostapd_set_acl_list(hapd, conf->bss[0]->deny_mac,
1477 conf->bss[0]->num_deny_mac,
1478 accept_acl);
1479 if (err) {
1480 wpa_printf(MSG_DEBUG, "Failed to set deny acl");
1481 return;
1482 }
1483 }
1484 }
1485
1486
start_ctrl_iface_bss(struct hostapd_data * hapd)1487 static int start_ctrl_iface_bss(struct hostapd_data *hapd)
1488 {
1489 if (!hapd->iface->interfaces ||
1490 !hapd->iface->interfaces->ctrl_iface_init)
1491 return 0;
1492
1493 if (hapd->iface->interfaces->ctrl_iface_init(hapd)) {
1494 wpa_printf(MSG_ERROR,
1495 "Failed to setup control interface for %s",
1496 hapd->conf->iface);
1497 return -1;
1498 }
1499
1500 return 0;
1501 }
1502
1503
start_ctrl_iface(struct hostapd_iface * iface)1504 static int start_ctrl_iface(struct hostapd_iface *iface)
1505 {
1506 size_t i;
1507
1508 if (!iface->interfaces || !iface->interfaces->ctrl_iface_init)
1509 return 0;
1510
1511 for (i = 0; i < iface->num_bss; i++) {
1512 struct hostapd_data *hapd = iface->bss[i];
1513 if (iface->interfaces->ctrl_iface_init(hapd)) {
1514 wpa_printf(MSG_ERROR,
1515 "Failed to setup control interface for %s",
1516 hapd->conf->iface);
1517 return -1;
1518 }
1519 }
1520
1521 return 0;
1522 }
1523
1524
channel_list_update_timeout(void * eloop_ctx,void * timeout_ctx)1525 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx)
1526 {
1527 struct hostapd_iface *iface = eloop_ctx;
1528
1529 if (!iface->wait_channel_update) {
1530 wpa_printf(MSG_INFO, "Channel list update timeout, but interface was not waiting for it");
1531 return;
1532 }
1533
1534 /*
1535 * It is possible that the existing channel list is acceptable, so try
1536 * to proceed.
1537 */
1538 wpa_printf(MSG_DEBUG, "Channel list update timeout - try to continue anyway");
1539 setup_interface2(iface);
1540 }
1541
1542
hostapd_channel_list_updated(struct hostapd_iface * iface,int initiator)1543 void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator)
1544 {
1545 if (!iface->wait_channel_update || initiator != REGDOM_SET_BY_USER)
1546 return;
1547
1548 wpa_printf(MSG_DEBUG, "Channel list updated - continue setup");
1549 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
1550 setup_interface2(iface);
1551 }
1552
1553
setup_interface(struct hostapd_iface * iface)1554 static int setup_interface(struct hostapd_iface *iface)
1555 {
1556 struct hostapd_data *hapd = iface->bss[0];
1557 size_t i;
1558
1559 /*
1560 * It is possible that setup_interface() is called after the interface
1561 * was disabled etc., in which case driver_ap_teardown is possibly set
1562 * to 1. Clear it here so any other key/station deletion, which is not
1563 * part of a teardown flow, would also call the relevant driver
1564 * callbacks.
1565 */
1566 iface->driver_ap_teardown = 0;
1567
1568 if (!iface->phy[0]) {
1569 const char *phy = hostapd_drv_get_radio_name(hapd);
1570 if (phy) {
1571 wpa_printf(MSG_DEBUG, "phy: %s", phy);
1572 os_strlcpy(iface->phy, phy, sizeof(iface->phy));
1573 }
1574 }
1575
1576 /*
1577 * Make sure that all BSSes get configured with a pointer to the same
1578 * driver interface.
1579 */
1580 for (i = 1; i < iface->num_bss; i++) {
1581 iface->bss[i]->driver = hapd->driver;
1582 iface->bss[i]->drv_priv = hapd->drv_priv;
1583 }
1584
1585 if (hostapd_validate_bssid_configuration(iface))
1586 return -1;
1587
1588 /*
1589 * Initialize control interfaces early to allow external monitoring of
1590 * channel setup operations that may take considerable amount of time
1591 * especially for DFS cases.
1592 */
1593 if (start_ctrl_iface(iface))
1594 return -1;
1595
1596 if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1597 char country[4], previous_country[4];
1598
1599 hostapd_set_state(iface, HAPD_IFACE_COUNTRY_UPDATE);
1600 if (hostapd_get_country(hapd, previous_country) < 0)
1601 previous_country[0] = '\0';
1602
1603 os_memcpy(country, hapd->iconf->country, 3);
1604 country[3] = '\0';
1605 if (hostapd_set_country(hapd, country) < 0) {
1606 wpa_printf(MSG_ERROR, "Failed to set country code");
1607 return -1;
1608 }
1609
1610 wpa_printf(MSG_DEBUG, "Previous country code %s, new country code %s",
1611 previous_country, country);
1612
1613 if (os_strncmp(previous_country, country, 2) != 0) {
1614 wpa_printf(MSG_DEBUG, "Continue interface setup after channel list update");
1615 iface->wait_channel_update = 1;
1616 eloop_register_timeout(5, 0,
1617 channel_list_update_timeout,
1618 iface, NULL);
1619 return 0;
1620 }
1621 }
1622
1623 return setup_interface2(iface);
1624 }
1625
1626
configured_fixed_chan_to_freq(struct hostapd_iface * iface)1627 static int configured_fixed_chan_to_freq(struct hostapd_iface *iface)
1628 {
1629 int freq, i, j;
1630
1631 if (!iface->conf->channel)
1632 return 0;
1633 if (iface->conf->op_class) {
1634 freq = ieee80211_chan_to_freq(NULL, iface->conf->op_class,
1635 iface->conf->channel);
1636 if (freq < 0) {
1637 wpa_printf(MSG_INFO,
1638 "Could not convert op_class %u channel %u to operating frequency",
1639 iface->conf->op_class, iface->conf->channel);
1640 return -1;
1641 }
1642 iface->freq = freq;
1643 return 0;
1644 }
1645
1646 /* Old configurations using only 2.4/5/60 GHz bands may not specify the
1647 * op_class parameter. Select a matching channel from the configured
1648 * mode using the channel parameter for these cases.
1649 */
1650 for (j = 0; j < iface->num_hw_features; j++) {
1651 struct hostapd_hw_modes *mode = &iface->hw_features[j];
1652
1653 if (iface->conf->hw_mode != HOSTAPD_MODE_IEEE80211ANY &&
1654 iface->conf->hw_mode != mode->mode)
1655 continue;
1656 for (i = 0; i < mode->num_channels; i++) {
1657 struct hostapd_channel_data *chan = &mode->channels[i];
1658
1659 if (chan->chan == iface->conf->channel &&
1660 !is_6ghz_freq(chan->freq)) {
1661 iface->freq = chan->freq;
1662 return 0;
1663 }
1664 }
1665 }
1666
1667 wpa_printf(MSG_INFO, "Could not determine operating frequency");
1668 return -1;
1669 }
1670
1671
setup_interface2(struct hostapd_iface * iface)1672 static int setup_interface2(struct hostapd_iface *iface)
1673 {
1674 iface->wait_channel_update = 0;
1675
1676 if (hostapd_get_hw_features(iface)) {
1677 /* Not all drivers support this yet, so continue without hw
1678 * feature data. */
1679 } else {
1680 int ret;
1681
1682 ret = configured_fixed_chan_to_freq(iface);
1683 if (ret < 0)
1684 goto fail;
1685
1686 if (iface->conf->op_class) {
1687 int ch_width;
1688
1689 ch_width = op_class_to_ch_width(iface->conf->op_class);
1690 hostapd_set_oper_chwidth(iface->conf, ch_width);
1691 }
1692
1693 ret = hostapd_select_hw_mode(iface);
1694 if (ret < 0) {
1695 wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1696 "channel. (%d)", ret);
1697 goto fail;
1698 }
1699 if (ret == 1) {
1700 wpa_printf(MSG_DEBUG, "Interface initialization will be completed in a callback (ACS)");
1701 return 0;
1702 }
1703 ret = hostapd_check_edmg_capab(iface);
1704 if (ret < 0)
1705 goto fail;
1706 ret = hostapd_check_he_6ghz_capab(iface);
1707 if (ret < 0)
1708 goto fail;
1709 ret = hostapd_check_ht_capab(iface);
1710 if (ret < 0)
1711 goto fail;
1712 if (ret == 1) {
1713 wpa_printf(MSG_DEBUG, "Interface initialization will "
1714 "be completed in a callback");
1715 return 0;
1716 }
1717
1718 if (iface->conf->ieee80211h)
1719 wpa_printf(MSG_DEBUG, "DFS support is enabled");
1720 }
1721 return hostapd_setup_interface_complete(iface, 0);
1722
1723 fail:
1724 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1725 wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1726 if (iface->interfaces && iface->interfaces->terminate_on_error)
1727 eloop_terminate();
1728 return -1;
1729 }
1730
1731
1732 #ifdef CONFIG_FST
1733
fst_hostapd_get_bssid_cb(void * ctx)1734 static const u8 * fst_hostapd_get_bssid_cb(void *ctx)
1735 {
1736 struct hostapd_data *hapd = ctx;
1737
1738 return hapd->own_addr;
1739 }
1740
1741
fst_hostapd_get_channel_info_cb(void * ctx,enum hostapd_hw_mode * hw_mode,u8 * channel)1742 static void fst_hostapd_get_channel_info_cb(void *ctx,
1743 enum hostapd_hw_mode *hw_mode,
1744 u8 *channel)
1745 {
1746 struct hostapd_data *hapd = ctx;
1747
1748 *hw_mode = ieee80211_freq_to_chan(hapd->iface->freq, channel);
1749 }
1750
1751
fst_hostapd_set_ies_cb(void * ctx,const struct wpabuf * fst_ies)1752 static void fst_hostapd_set_ies_cb(void *ctx, const struct wpabuf *fst_ies)
1753 {
1754 struct hostapd_data *hapd = ctx;
1755
1756 if (hapd->iface->fst_ies != fst_ies) {
1757 hapd->iface->fst_ies = fst_ies;
1758 if (ieee802_11_set_beacon(hapd))
1759 wpa_printf(MSG_WARNING, "FST: Cannot set beacon");
1760 }
1761 }
1762
1763
fst_hostapd_send_action_cb(void * ctx,const u8 * da,struct wpabuf * buf)1764 static int fst_hostapd_send_action_cb(void *ctx, const u8 *da,
1765 struct wpabuf *buf)
1766 {
1767 struct hostapd_data *hapd = ctx;
1768
1769 return hostapd_drv_send_action(hapd, hapd->iface->freq, 0, da,
1770 wpabuf_head(buf), wpabuf_len(buf));
1771 }
1772
1773
fst_hostapd_get_mb_ie_cb(void * ctx,const u8 * addr)1774 static const struct wpabuf * fst_hostapd_get_mb_ie_cb(void *ctx, const u8 *addr)
1775 {
1776 struct hostapd_data *hapd = ctx;
1777 struct sta_info *sta = ap_get_sta(hapd, addr);
1778
1779 return sta ? sta->mb_ies : NULL;
1780 }
1781
1782
fst_hostapd_update_mb_ie_cb(void * ctx,const u8 * addr,const u8 * buf,size_t size)1783 static void fst_hostapd_update_mb_ie_cb(void *ctx, const u8 *addr,
1784 const u8 *buf, size_t size)
1785 {
1786 struct hostapd_data *hapd = ctx;
1787 struct sta_info *sta = ap_get_sta(hapd, addr);
1788
1789 if (sta) {
1790 struct mb_ies_info info;
1791
1792 if (!mb_ies_info_by_ies(&info, buf, size)) {
1793 wpabuf_free(sta->mb_ies);
1794 sta->mb_ies = mb_ies_by_info(&info);
1795 }
1796 }
1797 }
1798
1799
fst_hostapd_get_sta(struct fst_get_peer_ctx ** get_ctx,bool mb_only)1800 static const u8 * fst_hostapd_get_sta(struct fst_get_peer_ctx **get_ctx,
1801 bool mb_only)
1802 {
1803 struct sta_info *s = (struct sta_info *) *get_ctx;
1804
1805 if (mb_only) {
1806 for (; s && !s->mb_ies; s = s->next)
1807 ;
1808 }
1809
1810 if (s) {
1811 *get_ctx = (struct fst_get_peer_ctx *) s->next;
1812
1813 return s->addr;
1814 }
1815
1816 *get_ctx = NULL;
1817 return NULL;
1818 }
1819
1820
fst_hostapd_get_peer_first(void * ctx,struct fst_get_peer_ctx ** get_ctx,bool mb_only)1821 static const u8 * fst_hostapd_get_peer_first(void *ctx,
1822 struct fst_get_peer_ctx **get_ctx,
1823 bool mb_only)
1824 {
1825 struct hostapd_data *hapd = ctx;
1826
1827 *get_ctx = (struct fst_get_peer_ctx *) hapd->sta_list;
1828
1829 return fst_hostapd_get_sta(get_ctx, mb_only);
1830 }
1831
1832
fst_hostapd_get_peer_next(void * ctx,struct fst_get_peer_ctx ** get_ctx,bool mb_only)1833 static const u8 * fst_hostapd_get_peer_next(void *ctx,
1834 struct fst_get_peer_ctx **get_ctx,
1835 bool mb_only)
1836 {
1837 return fst_hostapd_get_sta(get_ctx, mb_only);
1838 }
1839
1840
fst_hostapd_fill_iface_obj(struct hostapd_data * hapd,struct fst_wpa_obj * iface_obj)1841 void fst_hostapd_fill_iface_obj(struct hostapd_data *hapd,
1842 struct fst_wpa_obj *iface_obj)
1843 {
1844 iface_obj->ctx = hapd;
1845 iface_obj->get_bssid = fst_hostapd_get_bssid_cb;
1846 iface_obj->get_channel_info = fst_hostapd_get_channel_info_cb;
1847 iface_obj->set_ies = fst_hostapd_set_ies_cb;
1848 iface_obj->send_action = fst_hostapd_send_action_cb;
1849 iface_obj->get_mb_ie = fst_hostapd_get_mb_ie_cb;
1850 iface_obj->update_mb_ie = fst_hostapd_update_mb_ie_cb;
1851 iface_obj->get_peer_first = fst_hostapd_get_peer_first;
1852 iface_obj->get_peer_next = fst_hostapd_get_peer_next;
1853 }
1854
1855 #endif /* CONFIG_FST */
1856
1857 #ifdef CONFIG_OWE
1858
hostapd_owe_iface_iter(struct hostapd_iface * iface,void * ctx)1859 static int hostapd_owe_iface_iter(struct hostapd_iface *iface, void *ctx)
1860 {
1861 struct hostapd_data *hapd = ctx;
1862 size_t i;
1863
1864 for (i = 0; i < iface->num_bss; i++) {
1865 struct hostapd_data *bss = iface->bss[i];
1866
1867 if (os_strcmp(hapd->conf->owe_transition_ifname,
1868 bss->conf->iface) != 0)
1869 continue;
1870
1871 wpa_printf(MSG_DEBUG,
1872 "OWE: ifname=%s found transition mode ifname=%s BSSID "
1873 MACSTR " SSID %s",
1874 hapd->conf->iface, bss->conf->iface,
1875 MAC2STR(bss->own_addr),
1876 wpa_ssid_txt(bss->conf->ssid.ssid,
1877 bss->conf->ssid.ssid_len));
1878 if (!bss->conf->ssid.ssid_set || !bss->conf->ssid.ssid_len ||
1879 is_zero_ether_addr(bss->own_addr))
1880 continue;
1881
1882 os_memcpy(hapd->conf->owe_transition_bssid, bss->own_addr,
1883 ETH_ALEN);
1884 os_memcpy(hapd->conf->owe_transition_ssid,
1885 bss->conf->ssid.ssid, bss->conf->ssid.ssid_len);
1886 hapd->conf->owe_transition_ssid_len = bss->conf->ssid.ssid_len;
1887 wpa_printf(MSG_DEBUG,
1888 "OWE: Copied transition mode information");
1889 return 1;
1890 }
1891
1892 return 0;
1893 }
1894
1895
hostapd_owe_trans_get_info(struct hostapd_data * hapd)1896 int hostapd_owe_trans_get_info(struct hostapd_data *hapd)
1897 {
1898 if (hapd->conf->owe_transition_ssid_len > 0 &&
1899 !is_zero_ether_addr(hapd->conf->owe_transition_bssid))
1900 return 0;
1901
1902 /* Find transition mode SSID/BSSID information from a BSS operated by
1903 * this hostapd instance. */
1904 if (!hapd->iface->interfaces ||
1905 !hapd->iface->interfaces->for_each_interface)
1906 return hostapd_owe_iface_iter(hapd->iface, hapd);
1907 else
1908 return hapd->iface->interfaces->for_each_interface(
1909 hapd->iface->interfaces, hostapd_owe_iface_iter, hapd);
1910 }
1911
1912
hostapd_owe_iface_iter2(struct hostapd_iface * iface,void * ctx)1913 static int hostapd_owe_iface_iter2(struct hostapd_iface *iface, void *ctx)
1914 {
1915 size_t i;
1916
1917 for (i = 0; i < iface->num_bss; i++) {
1918 struct hostapd_data *bss = iface->bss[i];
1919 int res;
1920
1921 if (!bss->conf->owe_transition_ifname[0])
1922 continue;
1923 if (bss->iface->state != HAPD_IFACE_ENABLED) {
1924 wpa_printf(MSG_DEBUG,
1925 "OWE: Interface %s state %s - defer beacon update",
1926 bss->conf->iface,
1927 hostapd_state_text(bss->iface->state));
1928 continue;
1929 }
1930 res = hostapd_owe_trans_get_info(bss);
1931 if (res == 0)
1932 continue;
1933 wpa_printf(MSG_DEBUG,
1934 "OWE: Matching transition mode interface enabled - update beacon data for %s",
1935 bss->conf->iface);
1936 ieee802_11_set_beacon(bss);
1937 }
1938
1939 return 0;
1940 }
1941
1942 #endif /* CONFIG_OWE */
1943
1944
hostapd_owe_update_trans(struct hostapd_iface * iface)1945 static void hostapd_owe_update_trans(struct hostapd_iface *iface)
1946 {
1947 #ifdef CONFIG_OWE
1948 /* Check whether the enabled BSS can complete OWE transition mode
1949 * configuration for any pending interface. */
1950 if (!iface->interfaces ||
1951 !iface->interfaces->for_each_interface)
1952 hostapd_owe_iface_iter2(iface, NULL);
1953 else
1954 iface->interfaces->for_each_interface(
1955 iface->interfaces, hostapd_owe_iface_iter2, NULL);
1956 #endif /* CONFIG_OWE */
1957 }
1958
1959
hostapd_interface_setup_failure_handler(void * eloop_ctx,void * timeout_ctx)1960 static void hostapd_interface_setup_failure_handler(void *eloop_ctx,
1961 void *timeout_ctx)
1962 {
1963 struct hostapd_iface *iface = eloop_ctx;
1964 struct hostapd_data *hapd;
1965
1966 if (iface->num_bss < 1 || !iface->bss || !iface->bss[0])
1967 return;
1968 hapd = iface->bss[0];
1969 if (hapd->setup_complete_cb)
1970 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
1971 }
1972
1973
hostapd_setup_interface_complete_sync(struct hostapd_iface * iface,int err)1974 static int hostapd_setup_interface_complete_sync(struct hostapd_iface *iface,
1975 int err)
1976 {
1977 struct hostapd_data *hapd = iface->bss[0];
1978 size_t j;
1979 u8 *prev_addr;
1980 int delay_apply_cfg = 0;
1981 int res_dfs_offload = 0;
1982
1983 if (err)
1984 goto fail;
1985
1986 wpa_printf(MSG_DEBUG, "Completing interface initialization");
1987 if (iface->freq) {
1988 #ifdef NEED_AP_MLME
1989 int res;
1990 #endif /* NEED_AP_MLME */
1991
1992 wpa_printf(MSG_DEBUG, "Mode: %s Channel: %d "
1993 "Frequency: %d MHz",
1994 hostapd_hw_mode_txt(iface->conf->hw_mode),
1995 iface->conf->channel, iface->freq);
1996
1997 #ifdef NEED_AP_MLME
1998 /* Handle DFS only if it is not offloaded to the driver */
1999 if (!(iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)) {
2000 /* Check DFS */
2001 res = hostapd_handle_dfs(iface);
2002 if (res <= 0) {
2003 if (res < 0)
2004 goto fail;
2005 return res;
2006 }
2007 } else {
2008 /* If DFS is offloaded to the driver */
2009 res_dfs_offload = hostapd_handle_dfs_offload(iface);
2010 if (res_dfs_offload <= 0) {
2011 if (res_dfs_offload < 0)
2012 goto fail;
2013 } else {
2014 wpa_printf(MSG_DEBUG,
2015 "Proceed with AP/channel setup");
2016 /*
2017 * If this is a DFS channel, move to completing
2018 * AP setup.
2019 */
2020 if (res_dfs_offload == 1)
2021 goto dfs_offload;
2022 /* Otherwise fall through. */
2023 }
2024 }
2025 #endif /* NEED_AP_MLME */
2026
2027 #ifdef CONFIG_MESH
2028 if (iface->mconf != NULL) {
2029 wpa_printf(MSG_DEBUG,
2030 "%s: Mesh configuration will be applied while joining the mesh network",
2031 iface->bss[0]->conf->iface);
2032 delay_apply_cfg = 1;
2033 }
2034 #endif /* CONFIG_MESH */
2035
2036 if (!delay_apply_cfg &&
2037 hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq,
2038 hapd->iconf->channel,
2039 hapd->iconf->enable_edmg,
2040 hapd->iconf->edmg_channel,
2041 hapd->iconf->ieee80211n,
2042 hapd->iconf->ieee80211ac,
2043 hapd->iconf->ieee80211ax,
2044 hapd->iconf->secondary_channel,
2045 hostapd_get_oper_chwidth(hapd->iconf),
2046 hostapd_get_oper_centr_freq_seg0_idx(
2047 hapd->iconf),
2048 hostapd_get_oper_centr_freq_seg1_idx(
2049 hapd->iconf))) {
2050 wpa_printf(MSG_ERROR, "Could not set channel for "
2051 "kernel driver");
2052 goto fail;
2053 }
2054 }
2055
2056 if (iface->current_mode) {
2057 if (hostapd_prepare_rates(iface, iface->current_mode)) {
2058 wpa_printf(MSG_ERROR, "Failed to prepare rates "
2059 "table.");
2060 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
2061 HOSTAPD_LEVEL_WARNING,
2062 "Failed to prepare rates table.");
2063 goto fail;
2064 }
2065 }
2066
2067 if (hapd->iconf->rts_threshold >= -1 &&
2068 hostapd_set_rts(hapd, hapd->iconf->rts_threshold) &&
2069 hapd->iconf->rts_threshold >= -1) {
2070 wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
2071 "kernel driver");
2072 goto fail;
2073 }
2074
2075 if (hapd->iconf->fragm_threshold >= -1 &&
2076 hostapd_set_frag(hapd, hapd->iconf->fragm_threshold) &&
2077 hapd->iconf->fragm_threshold != -1) {
2078 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
2079 "for kernel driver");
2080 goto fail;
2081 }
2082
2083 prev_addr = hapd->own_addr;
2084
2085 for (j = 0; j < iface->num_bss; j++) {
2086 hapd = iface->bss[j];
2087 if (j)
2088 os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
2089 if (hostapd_setup_bss(hapd, j == 0)) {
2090 for (;;) {
2091 hapd = iface->bss[j];
2092 hostapd_bss_deinit_no_free(hapd);
2093 hostapd_free_hapd_data(hapd);
2094 if (j == 0)
2095 break;
2096 j--;
2097 }
2098 goto fail;
2099 }
2100 if (is_zero_ether_addr(hapd->conf->bssid))
2101 prev_addr = hapd->own_addr;
2102 }
2103 hapd = iface->bss[0];
2104
2105 hostapd_tx_queue_params(iface);
2106
2107 ap_list_init(iface);
2108
2109 hostapd_set_acl(hapd);
2110
2111 if (hostapd_driver_commit(hapd) < 0) {
2112 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
2113 "configuration", __func__);
2114 goto fail;
2115 }
2116
2117 /*
2118 * WPS UPnP module can be initialized only when the "upnp_iface" is up.
2119 * If "interface" and "upnp_iface" are the same (e.g., non-bridge
2120 * mode), the interface is up only after driver_commit, so initialize
2121 * WPS after driver_commit.
2122 */
2123 for (j = 0; j < iface->num_bss; j++) {
2124 if (hostapd_init_wps_complete(iface->bss[j]))
2125 goto fail;
2126 }
2127
2128 if ((iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
2129 !res_dfs_offload) {
2130 /*
2131 * If freq is DFS, and DFS is offloaded to the driver, then wait
2132 * for CAC to complete.
2133 */
2134 wpa_printf(MSG_DEBUG, "%s: Wait for CAC to complete", __func__);
2135 return res_dfs_offload;
2136 }
2137
2138 #ifdef NEED_AP_MLME
2139 dfs_offload:
2140 #endif /* NEED_AP_MLME */
2141
2142 #ifdef CONFIG_FST
2143 if (hapd->iconf->fst_cfg.group_id[0]) {
2144 struct fst_wpa_obj iface_obj;
2145
2146 fst_hostapd_fill_iface_obj(hapd, &iface_obj);
2147 iface->fst = fst_attach(hapd->conf->iface, hapd->own_addr,
2148 &iface_obj, &hapd->iconf->fst_cfg);
2149 if (!iface->fst) {
2150 wpa_printf(MSG_ERROR, "Could not attach to FST %s",
2151 hapd->iconf->fst_cfg.group_id);
2152 goto fail;
2153 }
2154 }
2155 #endif /* CONFIG_FST */
2156
2157 hostapd_set_state(iface, HAPD_IFACE_ENABLED);
2158 hostapd_owe_update_trans(iface);
2159 airtime_policy_update_init(iface);
2160 wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_ENABLED);
2161 if (hapd->setup_complete_cb)
2162 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
2163
2164 #ifdef CONFIG_MESH
2165 if (delay_apply_cfg && !iface->mconf) {
2166 wpa_printf(MSG_ERROR, "Error while completing mesh init");
2167 goto fail;
2168 }
2169 #endif /* CONFIG_MESH */
2170
2171 wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
2172 iface->bss[0]->conf->iface);
2173 if (iface->interfaces && iface->interfaces->terminate_on_error > 0)
2174 iface->interfaces->terminate_on_error--;
2175
2176 for (j = 0; j < iface->num_bss; j++)
2177 hostapd_neighbor_set_own_report(iface->bss[j]);
2178
2179 return 0;
2180
2181 fail:
2182 wpa_printf(MSG_ERROR, "Interface initialization failed");
2183 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
2184 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2185 #ifdef CONFIG_FST
2186 if (iface->fst) {
2187 fst_detach(iface->fst);
2188 iface->fst = NULL;
2189 }
2190 #endif /* CONFIG_FST */
2191
2192 if (iface->interfaces && iface->interfaces->terminate_on_error) {
2193 eloop_terminate();
2194 } else if (hapd->setup_complete_cb) {
2195 /*
2196 * Calling hapd->setup_complete_cb directly may cause iface
2197 * deinitialization which may be accessed later by the caller.
2198 */
2199 eloop_register_timeout(0, 0,
2200 hostapd_interface_setup_failure_handler,
2201 iface, NULL);
2202 }
2203
2204 return -1;
2205 }
2206
2207
2208 /**
2209 * hostapd_setup_interface_complete - Complete interface setup
2210 *
2211 * This function is called when previous steps in the interface setup has been
2212 * completed. This can also start operations, e.g., DFS, that will require
2213 * additional processing before interface is ready to be enabled. Such
2214 * operations will call this function from eloop callbacks when finished.
2215 */
hostapd_setup_interface_complete(struct hostapd_iface * iface,int err)2216 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err)
2217 {
2218 struct hapd_interfaces *interfaces = iface->interfaces;
2219 struct hostapd_data *hapd = iface->bss[0];
2220 unsigned int i;
2221 int not_ready_in_sync_ifaces = 0;
2222
2223 if (!iface->need_to_start_in_sync)
2224 return hostapd_setup_interface_complete_sync(iface, err);
2225
2226 if (err) {
2227 wpa_printf(MSG_ERROR, "Interface initialization failed");
2228 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
2229 iface->need_to_start_in_sync = 0;
2230 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2231 if (interfaces && interfaces->terminate_on_error)
2232 eloop_terminate();
2233 return -1;
2234 }
2235
2236 if (iface->ready_to_start_in_sync) {
2237 /* Already in ready and waiting. should never happpen */
2238 return 0;
2239 }
2240
2241 for (i = 0; i < interfaces->count; i++) {
2242 if (interfaces->iface[i]->need_to_start_in_sync &&
2243 !interfaces->iface[i]->ready_to_start_in_sync)
2244 not_ready_in_sync_ifaces++;
2245 }
2246
2247 /*
2248 * Check if this is the last interface, if yes then start all the other
2249 * waiting interfaces. If not, add this interface to the waiting list.
2250 */
2251 if (not_ready_in_sync_ifaces > 1 && iface->state == HAPD_IFACE_DFS) {
2252 /*
2253 * If this interface went through CAC, do not synchronize, just
2254 * start immediately.
2255 */
2256 iface->need_to_start_in_sync = 0;
2257 wpa_printf(MSG_INFO,
2258 "%s: Finished CAC - bypass sync and start interface",
2259 iface->bss[0]->conf->iface);
2260 return hostapd_setup_interface_complete_sync(iface, err);
2261 }
2262
2263 if (not_ready_in_sync_ifaces > 1) {
2264 /* need to wait as there are other interfaces still coming up */
2265 iface->ready_to_start_in_sync = 1;
2266 wpa_printf(MSG_INFO,
2267 "%s: Interface waiting to sync with other interfaces",
2268 iface->bss[0]->conf->iface);
2269 return 0;
2270 }
2271
2272 wpa_printf(MSG_INFO,
2273 "%s: Last interface to sync - starting all interfaces",
2274 iface->bss[0]->conf->iface);
2275 iface->need_to_start_in_sync = 0;
2276 hostapd_setup_interface_complete_sync(iface, err);
2277 for (i = 0; i < interfaces->count; i++) {
2278 if (interfaces->iface[i]->need_to_start_in_sync &&
2279 interfaces->iface[i]->ready_to_start_in_sync) {
2280 hostapd_setup_interface_complete_sync(
2281 interfaces->iface[i], 0);
2282 /* Only once the interfaces are sync started */
2283 interfaces->iface[i]->need_to_start_in_sync = 0;
2284 }
2285 }
2286
2287 return 0;
2288 }
2289
2290
2291 /**
2292 * hostapd_setup_interface - Setup of an interface
2293 * @iface: Pointer to interface data.
2294 * Returns: 0 on success, -1 on failure
2295 *
2296 * Initializes the driver interface, validates the configuration,
2297 * and sets driver parameters based on the configuration.
2298 * Flushes old stations, sets the channel, encryption,
2299 * beacons, and WDS links based on the configuration.
2300 *
2301 * If interface setup requires more time, e.g., to perform HT co-ex scans, ACS,
2302 * or DFS operations, this function returns 0 before such operations have been
2303 * completed. The pending operations are registered into eloop and will be
2304 * completed from eloop callbacks. Those callbacks end up calling
2305 * hostapd_setup_interface_complete() once setup has been completed.
2306 */
hostapd_setup_interface(struct hostapd_iface * iface)2307 int hostapd_setup_interface(struct hostapd_iface *iface)
2308 {
2309 int ret;
2310
2311 ret = setup_interface(iface);
2312 if (ret) {
2313 wpa_printf(MSG_ERROR, "%s: Unable to setup interface.",
2314 iface->conf ? iface->conf->bss[0]->iface : "N/A");
2315 return -1;
2316 }
2317
2318 return 0;
2319 }
2320
2321
2322 /**
2323 * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
2324 * @hapd_iface: Pointer to interface data
2325 * @conf: Pointer to per-interface configuration
2326 * @bss: Pointer to per-BSS configuration for this BSS
2327 * Returns: Pointer to allocated BSS data
2328 *
2329 * This function is used to allocate per-BSS data structure. This data will be
2330 * freed after hostapd_cleanup() is called for it during interface
2331 * deinitialization.
2332 */
2333 struct hostapd_data *
hostapd_alloc_bss_data(struct hostapd_iface * hapd_iface,struct hostapd_config * conf,struct hostapd_bss_config * bss)2334 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
2335 struct hostapd_config *conf,
2336 struct hostapd_bss_config *bss)
2337 {
2338 struct hostapd_data *hapd;
2339
2340 hapd = os_zalloc(sizeof(*hapd));
2341 if (hapd == NULL)
2342 return NULL;
2343
2344 hapd->new_assoc_sta_cb = hostapd_new_assoc_sta;
2345 hapd->iconf = conf;
2346 hapd->conf = bss;
2347 hapd->iface = hapd_iface;
2348 if (conf)
2349 hapd->driver = conf->driver;
2350 hapd->ctrl_sock = -1;
2351 dl_list_init(&hapd->ctrl_dst);
2352 dl_list_init(&hapd->nr_db);
2353 hapd->dhcp_sock = -1;
2354 #ifdef CONFIG_IEEE80211R_AP
2355 dl_list_init(&hapd->l2_queue);
2356 dl_list_init(&hapd->l2_oui_queue);
2357 #endif /* CONFIG_IEEE80211R_AP */
2358 #ifdef CONFIG_SAE
2359 dl_list_init(&hapd->sae_commit_queue);
2360 #endif /* CONFIG_SAE */
2361
2362 return hapd;
2363 }
2364
2365
hostapd_bss_deinit(struct hostapd_data * hapd)2366 static void hostapd_bss_deinit(struct hostapd_data *hapd)
2367 {
2368 if (!hapd)
2369 return;
2370 wpa_printf(MSG_DEBUG, "%s: deinit bss %s", __func__,
2371 hapd->conf ? hapd->conf->iface : "N/A");
2372 hostapd_bss_deinit_no_free(hapd);
2373 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2374 #ifdef CONFIG_SQLITE
2375 if (hapd->rad_attr_db) {
2376 sqlite3_close(hapd->rad_attr_db);
2377 hapd->rad_attr_db = NULL;
2378 }
2379 #endif /* CONFIG_SQLITE */
2380 hostapd_cleanup(hapd);
2381 }
2382
2383
hostapd_interface_deinit(struct hostapd_iface * iface)2384 void hostapd_interface_deinit(struct hostapd_iface *iface)
2385 {
2386 int j;
2387
2388 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
2389 if (iface == NULL)
2390 return;
2391
2392 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
2393
2394 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
2395 iface->wait_channel_update = 0;
2396
2397 #ifdef CONFIG_FST
2398 if (iface->fst) {
2399 fst_detach(iface->fst);
2400 iface->fst = NULL;
2401 }
2402 #endif /* CONFIG_FST */
2403
2404 for (j = (int) iface->num_bss - 1; j >= 0; j--) {
2405 if (!iface->bss)
2406 break;
2407 hostapd_bss_deinit(iface->bss[j]);
2408 }
2409
2410 #ifdef NEED_AP_MLME
2411 hostapd_stop_setup_timers(iface);
2412 eloop_cancel_timeout(ap_ht2040_timeout, iface, NULL);
2413 #endif /* NEED_AP_MLME */
2414 }
2415
2416
hostapd_interface_free(struct hostapd_iface * iface)2417 void hostapd_interface_free(struct hostapd_iface *iface)
2418 {
2419 size_t j;
2420 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
2421 for (j = 0; j < iface->num_bss; j++) {
2422 if (!iface->bss)
2423 break;
2424 wpa_printf(MSG_DEBUG, "%s: free hapd %p",
2425 __func__, iface->bss[j]);
2426 os_free(iface->bss[j]);
2427 }
2428 hostapd_cleanup_iface(iface);
2429 }
2430
2431
hostapd_alloc_iface(void)2432 struct hostapd_iface * hostapd_alloc_iface(void)
2433 {
2434 struct hostapd_iface *hapd_iface;
2435
2436 hapd_iface = os_zalloc(sizeof(*hapd_iface));
2437 if (!hapd_iface)
2438 return NULL;
2439
2440 dl_list_init(&hapd_iface->sta_seen);
2441
2442 return hapd_iface;
2443 }
2444
2445
2446 /**
2447 * hostapd_init - Allocate and initialize per-interface data
2448 * @config_file: Path to the configuration file
2449 * Returns: Pointer to the allocated interface data or %NULL on failure
2450 *
2451 * This function is used to allocate main data structures for per-interface
2452 * data. The allocated data buffer will be freed by calling
2453 * hostapd_cleanup_iface().
2454 */
hostapd_init(struct hapd_interfaces * interfaces,const char * config_file)2455 struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces,
2456 const char *config_file)
2457 {
2458 struct hostapd_iface *hapd_iface = NULL;
2459 struct hostapd_config *conf = NULL;
2460 struct hostapd_data *hapd;
2461 size_t i;
2462
2463 hapd_iface = hostapd_alloc_iface();
2464 if (hapd_iface == NULL)
2465 goto fail;
2466
2467 hapd_iface->config_fname = os_strdup(config_file);
2468 if (hapd_iface->config_fname == NULL)
2469 goto fail;
2470
2471 conf = interfaces->config_read_cb(hapd_iface->config_fname);
2472 if (conf == NULL)
2473 goto fail;
2474 hapd_iface->conf = conf;
2475
2476 hapd_iface->num_bss = conf->num_bss;
2477 hapd_iface->bss = os_calloc(conf->num_bss,
2478 sizeof(struct hostapd_data *));
2479 if (hapd_iface->bss == NULL)
2480 goto fail;
2481
2482 for (i = 0; i < conf->num_bss; i++) {
2483 hapd = hapd_iface->bss[i] =
2484 hostapd_alloc_bss_data(hapd_iface, conf,
2485 conf->bss[i]);
2486 if (hapd == NULL)
2487 goto fail;
2488 hapd->msg_ctx = hapd;
2489 }
2490
2491 return hapd_iface;
2492
2493 fail:
2494 wpa_printf(MSG_ERROR, "Failed to set up interface with %s",
2495 config_file);
2496 if (conf)
2497 hostapd_config_free(conf);
2498 if (hapd_iface) {
2499 os_free(hapd_iface->config_fname);
2500 os_free(hapd_iface->bss);
2501 wpa_printf(MSG_DEBUG, "%s: free iface %p",
2502 __func__, hapd_iface);
2503 os_free(hapd_iface);
2504 }
2505 return NULL;
2506 }
2507
2508
ifname_in_use(struct hapd_interfaces * interfaces,const char * ifname)2509 static int ifname_in_use(struct hapd_interfaces *interfaces, const char *ifname)
2510 {
2511 size_t i, j;
2512
2513 for (i = 0; i < interfaces->count; i++) {
2514 struct hostapd_iface *iface = interfaces->iface[i];
2515 for (j = 0; j < iface->num_bss; j++) {
2516 struct hostapd_data *hapd = iface->bss[j];
2517 if (os_strcmp(ifname, hapd->conf->iface) == 0)
2518 return 1;
2519 }
2520 }
2521
2522 return 0;
2523 }
2524
2525
2526 /**
2527 * hostapd_interface_init_bss - Read configuration file and init BSS data
2528 *
2529 * This function is used to parse configuration file for a BSS. This BSS is
2530 * added to an existing interface sharing the same radio (if any) or a new
2531 * interface is created if this is the first interface on a radio. This
2532 * allocate memory for the BSS. No actual driver operations are started.
2533 *
2534 * This is similar to hostapd_interface_init(), but for a case where the
2535 * configuration is used to add a single BSS instead of all BSSes for a radio.
2536 */
2537 struct hostapd_iface *
hostapd_interface_init_bss(struct hapd_interfaces * interfaces,const char * phy,const char * config_fname,int debug)2538 hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy,
2539 const char *config_fname, int debug)
2540 {
2541 struct hostapd_iface *new_iface = NULL, *iface = NULL;
2542 struct hostapd_data *hapd;
2543 int k;
2544 size_t i, bss_idx;
2545
2546 if (!phy || !*phy)
2547 return NULL;
2548
2549 for (i = 0; i < interfaces->count; i++) {
2550 if (os_strcmp(interfaces->iface[i]->phy, phy) == 0) {
2551 iface = interfaces->iface[i];
2552 break;
2553 }
2554 }
2555
2556 wpa_printf(MSG_INFO, "Configuration file: %s (phy %s)%s",
2557 config_fname, phy, iface ? "" : " --> new PHY");
2558 if (iface) {
2559 struct hostapd_config *conf;
2560 struct hostapd_bss_config **tmp_conf;
2561 struct hostapd_data **tmp_bss;
2562 struct hostapd_bss_config *bss;
2563 const char *ifname;
2564
2565 /* Add new BSS to existing iface */
2566 conf = interfaces->config_read_cb(config_fname);
2567 if (conf == NULL)
2568 return NULL;
2569 if (conf->num_bss > 1) {
2570 wpa_printf(MSG_ERROR, "Multiple BSSes specified in BSS-config");
2571 hostapd_config_free(conf);
2572 return NULL;
2573 }
2574
2575 ifname = conf->bss[0]->iface;
2576 if (ifname[0] != '\0' && ifname_in_use(interfaces, ifname)) {
2577 wpa_printf(MSG_ERROR,
2578 "Interface name %s already in use", ifname);
2579 hostapd_config_free(conf);
2580 return NULL;
2581 }
2582
2583 tmp_conf = os_realloc_array(
2584 iface->conf->bss, iface->conf->num_bss + 1,
2585 sizeof(struct hostapd_bss_config *));
2586 tmp_bss = os_realloc_array(iface->bss, iface->num_bss + 1,
2587 sizeof(struct hostapd_data *));
2588 if (tmp_bss)
2589 iface->bss = tmp_bss;
2590 if (tmp_conf) {
2591 iface->conf->bss = tmp_conf;
2592 iface->conf->last_bss = tmp_conf[0];
2593 }
2594 if (tmp_bss == NULL || tmp_conf == NULL) {
2595 hostapd_config_free(conf);
2596 return NULL;
2597 }
2598 bss = iface->conf->bss[iface->conf->num_bss] = conf->bss[0];
2599 iface->conf->num_bss++;
2600
2601 hapd = hostapd_alloc_bss_data(iface, iface->conf, bss);
2602 if (hapd == NULL) {
2603 iface->conf->num_bss--;
2604 hostapd_config_free(conf);
2605 return NULL;
2606 }
2607 iface->conf->last_bss = bss;
2608 iface->bss[iface->num_bss] = hapd;
2609 hapd->msg_ctx = hapd;
2610
2611 bss_idx = iface->num_bss++;
2612 conf->num_bss--;
2613 conf->bss[0] = NULL;
2614 hostapd_config_free(conf);
2615 } else {
2616 /* Add a new iface with the first BSS */
2617 new_iface = iface = hostapd_init(interfaces, config_fname);
2618 if (!iface)
2619 return NULL;
2620 os_strlcpy(iface->phy, phy, sizeof(iface->phy));
2621 iface->interfaces = interfaces;
2622 bss_idx = 0;
2623 }
2624
2625 for (k = 0; k < debug; k++) {
2626 if (iface->bss[bss_idx]->conf->logger_stdout_level > 0)
2627 iface->bss[bss_idx]->conf->logger_stdout_level--;
2628 }
2629
2630 if (iface->conf->bss[bss_idx]->iface[0] == '\0' &&
2631 !hostapd_drv_none(iface->bss[bss_idx])) {
2632 wpa_printf(MSG_ERROR, "Interface name not specified in %s",
2633 config_fname);
2634 if (new_iface)
2635 hostapd_interface_deinit_free(new_iface);
2636 return NULL;
2637 }
2638
2639 return iface;
2640 }
2641
2642
hostapd_interface_deinit_free(struct hostapd_iface * iface)2643 void hostapd_interface_deinit_free(struct hostapd_iface *iface)
2644 {
2645 const struct wpa_driver_ops *driver;
2646 void *drv_priv;
2647
2648 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
2649 if (iface == NULL)
2650 return;
2651 wpa_printf(MSG_DEBUG, "%s: num_bss=%u conf->num_bss=%u",
2652 __func__, (unsigned int) iface->num_bss,
2653 (unsigned int) iface->conf->num_bss);
2654 driver = iface->bss[0]->driver;
2655 drv_priv = iface->bss[0]->drv_priv;
2656 hostapd_interface_deinit(iface);
2657 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
2658 __func__, driver, drv_priv);
2659 if (driver && driver->hapd_deinit && drv_priv) {
2660 driver->hapd_deinit(drv_priv);
2661 iface->bss[0]->drv_priv = NULL;
2662 }
2663 hostapd_interface_free(iface);
2664 }
2665
2666
hostapd_deinit_driver(const struct wpa_driver_ops * driver,void * drv_priv,struct hostapd_iface * hapd_iface)2667 static void hostapd_deinit_driver(const struct wpa_driver_ops *driver,
2668 void *drv_priv,
2669 struct hostapd_iface *hapd_iface)
2670 {
2671 size_t j;
2672
2673 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
2674 __func__, driver, drv_priv);
2675 if (driver && driver->hapd_deinit && drv_priv) {
2676 driver->hapd_deinit(drv_priv);
2677 for (j = 0; j < hapd_iface->num_bss; j++) {
2678 wpa_printf(MSG_DEBUG, "%s:bss[%d]->drv_priv=%p",
2679 __func__, (int) j,
2680 hapd_iface->bss[j]->drv_priv);
2681 if (hapd_iface->bss[j]->drv_priv == drv_priv) {
2682 hapd_iface->bss[j]->drv_priv = NULL;
2683 hapd_iface->extended_capa = NULL;
2684 hapd_iface->extended_capa_mask = NULL;
2685 hapd_iface->extended_capa_len = 0;
2686 }
2687 }
2688 }
2689 }
2690
2691
hostapd_enable_iface(struct hostapd_iface * hapd_iface)2692 int hostapd_enable_iface(struct hostapd_iface *hapd_iface)
2693 {
2694 size_t j;
2695
2696 if (!hapd_iface)
2697 return -1;
2698
2699 if (hapd_iface->enable_iface_cb)
2700 return hapd_iface->enable_iface_cb(hapd_iface);
2701
2702 if (hapd_iface->bss[0]->drv_priv != NULL) {
2703 wpa_printf(MSG_ERROR, "Interface %s already enabled",
2704 hapd_iface->conf->bss[0]->iface);
2705 return -1;
2706 }
2707
2708 wpa_printf(MSG_DEBUG, "Enable interface %s",
2709 hapd_iface->conf->bss[0]->iface);
2710
2711 for (j = 0; j < hapd_iface->num_bss; j++)
2712 hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
2713 if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
2714 wpa_printf(MSG_INFO, "Invalid configuration - cannot enable");
2715 return -1;
2716 }
2717
2718 if (hapd_iface->interfaces == NULL ||
2719 hapd_iface->interfaces->driver_init == NULL ||
2720 hapd_iface->interfaces->driver_init(hapd_iface))
2721 return -1;
2722
2723 if (hostapd_setup_interface(hapd_iface)) {
2724 hostapd_deinit_driver(hapd_iface->bss[0]->driver,
2725 hapd_iface->bss[0]->drv_priv,
2726 hapd_iface);
2727 return -1;
2728 }
2729
2730 return 0;
2731 }
2732
2733
hostapd_reload_iface(struct hostapd_iface * hapd_iface)2734 int hostapd_reload_iface(struct hostapd_iface *hapd_iface)
2735 {
2736 size_t j;
2737
2738 wpa_printf(MSG_DEBUG, "Reload interface %s",
2739 hapd_iface->conf->bss[0]->iface);
2740 for (j = 0; j < hapd_iface->num_bss; j++)
2741 hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
2742 if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
2743 wpa_printf(MSG_ERROR, "Updated configuration is invalid");
2744 return -1;
2745 }
2746 hostapd_clear_old(hapd_iface);
2747 for (j = 0; j < hapd_iface->num_bss; j++)
2748 hostapd_reload_bss(hapd_iface->bss[j]);
2749
2750 return 0;
2751 }
2752
2753
hostapd_disable_iface(struct hostapd_iface * hapd_iface)2754 int hostapd_disable_iface(struct hostapd_iface *hapd_iface)
2755 {
2756 size_t j;
2757 const struct wpa_driver_ops *driver;
2758 void *drv_priv;
2759
2760 if (hapd_iface == NULL)
2761 return -1;
2762
2763 if (hapd_iface->disable_iface_cb)
2764 return hapd_iface->disable_iface_cb(hapd_iface);
2765
2766 if (hapd_iface->bss[0]->drv_priv == NULL) {
2767 wpa_printf(MSG_INFO, "Interface %s already disabled",
2768 hapd_iface->conf->bss[0]->iface);
2769 return -1;
2770 }
2771
2772 wpa_msg(hapd_iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2773 driver = hapd_iface->bss[0]->driver;
2774 drv_priv = hapd_iface->bss[0]->drv_priv;
2775
2776 hapd_iface->driver_ap_teardown =
2777 !!(hapd_iface->drv_flags &
2778 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2779
2780 #ifdef NEED_AP_MLME
2781 for (j = 0; j < hapd_iface->num_bss; j++)
2782 hostapd_cleanup_cs_params(hapd_iface->bss[j]);
2783 #endif /* NEED_AP_MLME */
2784
2785 /* same as hostapd_interface_deinit without deinitializing ctrl-iface */
2786 for (j = 0; j < hapd_iface->num_bss; j++) {
2787 struct hostapd_data *hapd = hapd_iface->bss[j];
2788 hostapd_bss_deinit_no_free(hapd);
2789 hostapd_free_hapd_data(hapd);
2790 }
2791
2792 hostapd_deinit_driver(driver, drv_priv, hapd_iface);
2793
2794 /* From hostapd_cleanup_iface: These were initialized in
2795 * hostapd_setup_interface and hostapd_setup_interface_complete
2796 */
2797 hostapd_cleanup_iface_partial(hapd_iface);
2798
2799 wpa_printf(MSG_DEBUG, "Interface %s disabled",
2800 hapd_iface->bss[0]->conf->iface);
2801 hostapd_set_state(hapd_iface, HAPD_IFACE_DISABLED);
2802 return 0;
2803 }
2804
2805
2806 static struct hostapd_iface *
hostapd_iface_alloc(struct hapd_interfaces * interfaces)2807 hostapd_iface_alloc(struct hapd_interfaces *interfaces)
2808 {
2809 struct hostapd_iface **iface, *hapd_iface;
2810
2811 iface = os_realloc_array(interfaces->iface, interfaces->count + 1,
2812 sizeof(struct hostapd_iface *));
2813 if (iface == NULL)
2814 return NULL;
2815 interfaces->iface = iface;
2816 hapd_iface = interfaces->iface[interfaces->count] =
2817 hostapd_alloc_iface();
2818 if (hapd_iface == NULL) {
2819 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
2820 "the interface", __func__);
2821 return NULL;
2822 }
2823 interfaces->count++;
2824 hapd_iface->interfaces = interfaces;
2825
2826 return hapd_iface;
2827 }
2828
2829
2830 static struct hostapd_config *
hostapd_config_alloc(struct hapd_interfaces * interfaces,const char * ifname,const char * ctrl_iface,const char * driver)2831 hostapd_config_alloc(struct hapd_interfaces *interfaces, const char *ifname,
2832 const char *ctrl_iface, const char *driver)
2833 {
2834 struct hostapd_bss_config *bss;
2835 struct hostapd_config *conf;
2836
2837 /* Allocates memory for bss and conf */
2838 conf = hostapd_config_defaults();
2839 if (conf == NULL) {
2840 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
2841 "configuration", __func__);
2842 return NULL;
2843 }
2844
2845 if (driver) {
2846 int j;
2847
2848 for (j = 0; wpa_drivers[j]; j++) {
2849 if (os_strcmp(driver, wpa_drivers[j]->name) == 0) {
2850 conf->driver = wpa_drivers[j];
2851 goto skip;
2852 }
2853 }
2854
2855 wpa_printf(MSG_ERROR,
2856 "Invalid/unknown driver '%s' - registering the default driver",
2857 driver);
2858 }
2859
2860 conf->driver = wpa_drivers[0];
2861 if (conf->driver == NULL) {
2862 wpa_printf(MSG_ERROR, "No driver wrappers registered!");
2863 hostapd_config_free(conf);
2864 return NULL;
2865 }
2866
2867 skip:
2868 bss = conf->last_bss = conf->bss[0];
2869
2870 os_strlcpy(bss->iface, ifname, sizeof(bss->iface));
2871 bss->ctrl_interface = os_strdup(ctrl_iface);
2872 if (bss->ctrl_interface == NULL) {
2873 hostapd_config_free(conf);
2874 return NULL;
2875 }
2876
2877 /* Reading configuration file skipped, will be done in SET!
2878 * From reading the configuration till the end has to be done in
2879 * SET
2880 */
2881 return conf;
2882 }
2883
2884
hostapd_data_alloc(struct hostapd_iface * hapd_iface,struct hostapd_config * conf)2885 static int hostapd_data_alloc(struct hostapd_iface *hapd_iface,
2886 struct hostapd_config *conf)
2887 {
2888 size_t i;
2889 struct hostapd_data *hapd;
2890
2891 hapd_iface->bss = os_calloc(conf->num_bss,
2892 sizeof(struct hostapd_data *));
2893 if (hapd_iface->bss == NULL)
2894 return -1;
2895
2896 for (i = 0; i < conf->num_bss; i++) {
2897 hapd = hapd_iface->bss[i] =
2898 hostapd_alloc_bss_data(hapd_iface, conf, conf->bss[i]);
2899 if (hapd == NULL) {
2900 while (i > 0) {
2901 i--;
2902 os_free(hapd_iface->bss[i]);
2903 hapd_iface->bss[i] = NULL;
2904 }
2905 os_free(hapd_iface->bss);
2906 hapd_iface->bss = NULL;
2907 return -1;
2908 }
2909 hapd->msg_ctx = hapd;
2910 }
2911
2912 hapd_iface->conf = conf;
2913 hapd_iface->num_bss = conf->num_bss;
2914
2915 return 0;
2916 }
2917
2918
hostapd_add_iface(struct hapd_interfaces * interfaces,char * buf)2919 int hostapd_add_iface(struct hapd_interfaces *interfaces, char *buf)
2920 {
2921 struct hostapd_config *conf = NULL;
2922 struct hostapd_iface *hapd_iface = NULL, *new_iface = NULL;
2923 struct hostapd_data *hapd;
2924 char *ptr;
2925 size_t i, j;
2926 const char *conf_file = NULL, *phy_name = NULL;
2927
2928 if (os_strncmp(buf, "bss_config=", 11) == 0) {
2929 char *pos;
2930 phy_name = buf + 11;
2931 pos = os_strchr(phy_name, ':');
2932 if (!pos)
2933 return -1;
2934 *pos++ = '\0';
2935 conf_file = pos;
2936 if (!os_strlen(conf_file))
2937 return -1;
2938
2939 hapd_iface = hostapd_interface_init_bss(interfaces, phy_name,
2940 conf_file, 0);
2941 if (!hapd_iface)
2942 return -1;
2943 for (j = 0; j < interfaces->count; j++) {
2944 if (interfaces->iface[j] == hapd_iface)
2945 break;
2946 }
2947 if (j == interfaces->count) {
2948 struct hostapd_iface **tmp;
2949 tmp = os_realloc_array(interfaces->iface,
2950 interfaces->count + 1,
2951 sizeof(struct hostapd_iface *));
2952 if (!tmp) {
2953 hostapd_interface_deinit_free(hapd_iface);
2954 return -1;
2955 }
2956 interfaces->iface = tmp;
2957 interfaces->iface[interfaces->count++] = hapd_iface;
2958 new_iface = hapd_iface;
2959 }
2960
2961 if (new_iface) {
2962 if (interfaces->driver_init(hapd_iface))
2963 goto fail;
2964
2965 if (hostapd_setup_interface(hapd_iface)) {
2966 hostapd_deinit_driver(
2967 hapd_iface->bss[0]->driver,
2968 hapd_iface->bss[0]->drv_priv,
2969 hapd_iface);
2970 goto fail;
2971 }
2972 } else {
2973 /* Assign new BSS with bss[0]'s driver info */
2974 hapd = hapd_iface->bss[hapd_iface->num_bss - 1];
2975 hapd->driver = hapd_iface->bss[0]->driver;
2976 hapd->drv_priv = hapd_iface->bss[0]->drv_priv;
2977 os_memcpy(hapd->own_addr, hapd_iface->bss[0]->own_addr,
2978 ETH_ALEN);
2979
2980 if (start_ctrl_iface_bss(hapd) < 0 ||
2981 (hapd_iface->state == HAPD_IFACE_ENABLED &&
2982 hostapd_setup_bss(hapd, -1))) {
2983 hostapd_cleanup(hapd);
2984 hapd_iface->bss[hapd_iface->num_bss - 1] = NULL;
2985 hapd_iface->conf->num_bss--;
2986 hapd_iface->num_bss--;
2987 wpa_printf(MSG_DEBUG, "%s: free hapd %p %s",
2988 __func__, hapd, hapd->conf->iface);
2989 hostapd_config_free_bss(hapd->conf);
2990 hapd->conf = NULL;
2991 os_free(hapd);
2992 return -1;
2993 }
2994 }
2995 hostapd_owe_update_trans(hapd_iface);
2996 return 0;
2997 }
2998
2999 ptr = os_strchr(buf, ' ');
3000 if (ptr == NULL)
3001 return -1;
3002 *ptr++ = '\0';
3003
3004 if (os_strncmp(ptr, "config=", 7) == 0)
3005 conf_file = ptr + 7;
3006
3007 for (i = 0; i < interfaces->count; i++) {
3008 if (!os_strcmp(interfaces->iface[i]->conf->bss[0]->iface,
3009 buf)) {
3010 wpa_printf(MSG_INFO, "Cannot add interface - it "
3011 "already exists");
3012 return -1;
3013 }
3014 }
3015
3016 hapd_iface = hostapd_iface_alloc(interfaces);
3017 if (hapd_iface == NULL) {
3018 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
3019 "for interface", __func__);
3020 goto fail;
3021 }
3022 new_iface = hapd_iface;
3023
3024 if (conf_file && interfaces->config_read_cb) {
3025 conf = interfaces->config_read_cb(conf_file);
3026 if (conf && conf->bss)
3027 os_strlcpy(conf->bss[0]->iface, buf,
3028 sizeof(conf->bss[0]->iface));
3029 } else {
3030 char *driver = os_strchr(ptr, ' ');
3031
3032 if (driver)
3033 *driver++ = '\0';
3034 conf = hostapd_config_alloc(interfaces, buf, ptr, driver);
3035 }
3036
3037 if (conf == NULL || conf->bss == NULL) {
3038 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
3039 "for configuration", __func__);
3040 goto fail;
3041 }
3042
3043 if (hostapd_data_alloc(hapd_iface, conf) < 0) {
3044 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
3045 "for hostapd", __func__);
3046 goto fail;
3047 }
3048 conf = NULL;
3049
3050 if (start_ctrl_iface(hapd_iface) < 0)
3051 goto fail;
3052
3053 wpa_printf(MSG_INFO, "Add interface '%s'",
3054 hapd_iface->conf->bss[0]->iface);
3055
3056 return 0;
3057
3058 fail:
3059 if (conf)
3060 hostapd_config_free(conf);
3061 if (hapd_iface) {
3062 if (hapd_iface->bss) {
3063 for (i = 0; i < hapd_iface->num_bss; i++) {
3064 hapd = hapd_iface->bss[i];
3065 if (!hapd)
3066 continue;
3067 if (hapd_iface->interfaces &&
3068 hapd_iface->interfaces->ctrl_iface_deinit)
3069 hapd_iface->interfaces->
3070 ctrl_iface_deinit(hapd);
3071 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
3072 __func__, hapd_iface->bss[i],
3073 hapd->conf->iface);
3074 hostapd_cleanup(hapd);
3075 os_free(hapd);
3076 hapd_iface->bss[i] = NULL;
3077 }
3078 os_free(hapd_iface->bss);
3079 hapd_iface->bss = NULL;
3080 }
3081 if (new_iface) {
3082 interfaces->count--;
3083 interfaces->iface[interfaces->count] = NULL;
3084 }
3085 hostapd_cleanup_iface(hapd_iface);
3086 }
3087 return -1;
3088 }
3089
3090
hostapd_remove_bss(struct hostapd_iface * iface,unsigned int idx)3091 static int hostapd_remove_bss(struct hostapd_iface *iface, unsigned int idx)
3092 {
3093 size_t i;
3094
3095 wpa_printf(MSG_INFO, "Remove BSS '%s'", iface->conf->bss[idx]->iface);
3096
3097 /* Remove hostapd_data only if it has already been initialized */
3098 if (idx < iface->num_bss) {
3099 struct hostapd_data *hapd = iface->bss[idx];
3100
3101 hostapd_bss_deinit(hapd);
3102 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
3103 __func__, hapd, hapd->conf->iface);
3104 hostapd_config_free_bss(hapd->conf);
3105 hapd->conf = NULL;
3106 os_free(hapd);
3107
3108 iface->num_bss--;
3109
3110 for (i = idx; i < iface->num_bss; i++)
3111 iface->bss[i] = iface->bss[i + 1];
3112 } else {
3113 hostapd_config_free_bss(iface->conf->bss[idx]);
3114 iface->conf->bss[idx] = NULL;
3115 }
3116
3117 iface->conf->num_bss--;
3118 for (i = idx; i < iface->conf->num_bss; i++)
3119 iface->conf->bss[i] = iface->conf->bss[i + 1];
3120
3121 return 0;
3122 }
3123
3124
hostapd_remove_iface(struct hapd_interfaces * interfaces,char * buf)3125 int hostapd_remove_iface(struct hapd_interfaces *interfaces, char *buf)
3126 {
3127 struct hostapd_iface *hapd_iface;
3128 size_t i, j, k = 0;
3129
3130 for (i = 0; i < interfaces->count; i++) {
3131 hapd_iface = interfaces->iface[i];
3132 if (hapd_iface == NULL)
3133 return -1;
3134 if (!os_strcmp(hapd_iface->conf->bss[0]->iface, buf)) {
3135 wpa_printf(MSG_INFO, "Remove interface '%s'", buf);
3136 hapd_iface->driver_ap_teardown =
3137 !!(hapd_iface->drv_flags &
3138 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
3139
3140 hostapd_interface_deinit_free(hapd_iface);
3141 k = i;
3142 while (k < (interfaces->count - 1)) {
3143 interfaces->iface[k] =
3144 interfaces->iface[k + 1];
3145 k++;
3146 }
3147 interfaces->count--;
3148 return 0;
3149 }
3150
3151 for (j = 0; j < hapd_iface->conf->num_bss; j++) {
3152 if (!os_strcmp(hapd_iface->conf->bss[j]->iface, buf)) {
3153 hapd_iface->driver_ap_teardown =
3154 !(hapd_iface->drv_flags &
3155 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
3156 return hostapd_remove_bss(hapd_iface, j);
3157 }
3158 }
3159 }
3160 return -1;
3161 }
3162
3163
3164 /**
3165 * hostapd_new_assoc_sta - Notify that a new station associated with the AP
3166 * @hapd: Pointer to BSS data
3167 * @sta: Pointer to the associated STA data
3168 * @reassoc: 1 to indicate this was a re-association; 0 = first association
3169 *
3170 * This function will be called whenever a station associates with the AP. It
3171 * can be called from ieee802_11.c for drivers that export MLME to hostapd and
3172 * from drv_callbacks.c based on driver events for drivers that take care of
3173 * management frames (IEEE 802.11 authentication and association) internally.
3174 */
hostapd_new_assoc_sta(struct hostapd_data * hapd,struct sta_info * sta,int reassoc)3175 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
3176 int reassoc)
3177 {
3178 if (hapd->tkip_countermeasures) {
3179 hostapd_drv_sta_deauth(hapd, sta->addr,
3180 WLAN_REASON_MICHAEL_MIC_FAILURE);
3181 return;
3182 }
3183
3184 hostapd_prune_associations(hapd, sta->addr);
3185 ap_sta_clear_disconnect_timeouts(hapd, sta);
3186 sta->post_csa_sa_query = 0;
3187
3188 #ifdef CONFIG_P2P
3189 if (sta->p2p_ie == NULL && !sta->no_p2p_set) {
3190 sta->no_p2p_set = 1;
3191 hapd->num_sta_no_p2p++;
3192 if (hapd->num_sta_no_p2p == 1)
3193 hostapd_p2p_non_p2p_sta_connected(hapd);
3194 }
3195 #endif /* CONFIG_P2P */
3196
3197 airtime_policy_new_sta(hapd, sta);
3198
3199 /* Start accounting here, if IEEE 802.1X and WPA are not used.
3200 * IEEE 802.1X/WPA code will start accounting after the station has
3201 * been authorized. */
3202 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen) {
3203 ap_sta_set_authorized(hapd, sta, 1);
3204 os_get_reltime(&sta->connected_time);
3205 accounting_sta_start(hapd, sta);
3206 }
3207
3208 /* Start IEEE 802.1X authentication process for new stations */
3209 ieee802_1x_new_station(hapd, sta);
3210 if (reassoc) {
3211 if (sta->auth_alg != WLAN_AUTH_FT &&
3212 sta->auth_alg != WLAN_AUTH_FILS_SK &&
3213 sta->auth_alg != WLAN_AUTH_FILS_SK_PFS &&
3214 sta->auth_alg != WLAN_AUTH_FILS_PK &&
3215 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
3216 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
3217 } else
3218 wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
3219
3220 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED) {
3221 if (eloop_cancel_timeout(ap_handle_timer, hapd, sta) > 0) {
3222 wpa_printf(MSG_DEBUG,
3223 "%s: %s: canceled wired ap_handle_timer timeout for "
3224 MACSTR,
3225 hapd->conf->iface, __func__,
3226 MAC2STR(sta->addr));
3227 }
3228 } else if (!(hapd->iface->drv_flags &
3229 WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) {
3230 wpa_printf(MSG_DEBUG,
3231 "%s: %s: reschedule ap_handle_timer timeout for "
3232 MACSTR " (%d seconds - ap_max_inactivity)",
3233 hapd->conf->iface, __func__, MAC2STR(sta->addr),
3234 hapd->conf->ap_max_inactivity);
3235 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
3236 eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
3237 ap_handle_timer, hapd, sta);
3238 }
3239
3240 #ifdef CONFIG_MACSEC
3241 if (hapd->conf->wpa_key_mgmt == WPA_KEY_MGMT_NONE &&
3242 hapd->conf->mka_psk_set)
3243 ieee802_1x_create_preshared_mka_hapd(hapd, sta);
3244 else
3245 ieee802_1x_alloc_kay_sm_hapd(hapd, sta);
3246 #endif /* CONFIG_MACSEC */
3247 }
3248
3249
hostapd_state_text(enum hostapd_iface_state s)3250 const char * hostapd_state_text(enum hostapd_iface_state s)
3251 {
3252 switch (s) {
3253 case HAPD_IFACE_UNINITIALIZED:
3254 return "UNINITIALIZED";
3255 case HAPD_IFACE_DISABLED:
3256 return "DISABLED";
3257 case HAPD_IFACE_COUNTRY_UPDATE:
3258 return "COUNTRY_UPDATE";
3259 case HAPD_IFACE_ACS:
3260 return "ACS";
3261 case HAPD_IFACE_HT_SCAN:
3262 return "HT_SCAN";
3263 case HAPD_IFACE_DFS:
3264 return "DFS";
3265 case HAPD_IFACE_ENABLED:
3266 return "ENABLED";
3267 }
3268
3269 return "UNKNOWN";
3270 }
3271
3272
hostapd_set_state(struct hostapd_iface * iface,enum hostapd_iface_state s)3273 void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s)
3274 {
3275 wpa_printf(MSG_INFO, "%s: interface state %s->%s",
3276 iface->conf ? iface->conf->bss[0]->iface : "N/A",
3277 hostapd_state_text(iface->state), hostapd_state_text(s));
3278 iface->state = s;
3279 }
3280
3281
hostapd_csa_in_progress(struct hostapd_iface * iface)3282 int hostapd_csa_in_progress(struct hostapd_iface *iface)
3283 {
3284 unsigned int i;
3285
3286 for (i = 0; i < iface->num_bss; i++)
3287 if (iface->bss[i]->csa_in_progress)
3288 return 1;
3289 return 0;
3290 }
3291
3292
3293 #ifdef NEED_AP_MLME
3294
free_beacon_data(struct beacon_data * beacon)3295 static void free_beacon_data(struct beacon_data *beacon)
3296 {
3297 os_free(beacon->head);
3298 beacon->head = NULL;
3299 os_free(beacon->tail);
3300 beacon->tail = NULL;
3301 os_free(beacon->probe_resp);
3302 beacon->probe_resp = NULL;
3303 os_free(beacon->beacon_ies);
3304 beacon->beacon_ies = NULL;
3305 os_free(beacon->proberesp_ies);
3306 beacon->proberesp_ies = NULL;
3307 os_free(beacon->assocresp_ies);
3308 beacon->assocresp_ies = NULL;
3309 }
3310
3311
hostapd_build_beacon_data(struct hostapd_data * hapd,struct beacon_data * beacon)3312 static int hostapd_build_beacon_data(struct hostapd_data *hapd,
3313 struct beacon_data *beacon)
3314 {
3315 struct wpabuf *beacon_extra, *proberesp_extra, *assocresp_extra;
3316 struct wpa_driver_ap_params params;
3317 int ret;
3318
3319 os_memset(beacon, 0, sizeof(*beacon));
3320 ret = ieee802_11_build_ap_params(hapd, ¶ms);
3321 if (ret < 0)
3322 return ret;
3323
3324 ret = hostapd_build_ap_extra_ies(hapd, &beacon_extra,
3325 &proberesp_extra,
3326 &assocresp_extra);
3327 if (ret)
3328 goto free_ap_params;
3329
3330 ret = -1;
3331 beacon->head = os_memdup(params.head, params.head_len);
3332 if (!beacon->head)
3333 goto free_ap_extra_ies;
3334
3335 beacon->head_len = params.head_len;
3336
3337 beacon->tail = os_memdup(params.tail, params.tail_len);
3338 if (!beacon->tail)
3339 goto free_beacon;
3340
3341 beacon->tail_len = params.tail_len;
3342
3343 if (params.proberesp != NULL) {
3344 beacon->probe_resp = os_memdup(params.proberesp,
3345 params.proberesp_len);
3346 if (!beacon->probe_resp)
3347 goto free_beacon;
3348
3349 beacon->probe_resp_len = params.proberesp_len;
3350 }
3351
3352 /* copy the extra ies */
3353 if (beacon_extra) {
3354 beacon->beacon_ies = os_memdup(beacon_extra->buf,
3355 wpabuf_len(beacon_extra));
3356 if (!beacon->beacon_ies)
3357 goto free_beacon;
3358
3359 beacon->beacon_ies_len = wpabuf_len(beacon_extra);
3360 }
3361
3362 if (proberesp_extra) {
3363 beacon->proberesp_ies = os_memdup(proberesp_extra->buf,
3364 wpabuf_len(proberesp_extra));
3365 if (!beacon->proberesp_ies)
3366 goto free_beacon;
3367
3368 beacon->proberesp_ies_len = wpabuf_len(proberesp_extra);
3369 }
3370
3371 if (assocresp_extra) {
3372 beacon->assocresp_ies = os_memdup(assocresp_extra->buf,
3373 wpabuf_len(assocresp_extra));
3374 if (!beacon->assocresp_ies)
3375 goto free_beacon;
3376
3377 beacon->assocresp_ies_len = wpabuf_len(assocresp_extra);
3378 }
3379
3380 ret = 0;
3381 free_beacon:
3382 /* if the function fails, the caller should not free beacon data */
3383 if (ret)
3384 free_beacon_data(beacon);
3385
3386 free_ap_extra_ies:
3387 hostapd_free_ap_extra_ies(hapd, beacon_extra, proberesp_extra,
3388 assocresp_extra);
3389 free_ap_params:
3390 ieee802_11_free_ap_params(¶ms);
3391 return ret;
3392 }
3393
3394
3395 /*
3396 * TODO: This flow currently supports only changing channel and width within
3397 * the same hw_mode. Any other changes to MAC parameters or provided settings
3398 * are not supported.
3399 */
hostapd_change_config_freq(struct hostapd_data * hapd,struct hostapd_config * conf,struct hostapd_freq_params * params,struct hostapd_freq_params * old_params)3400 static int hostapd_change_config_freq(struct hostapd_data *hapd,
3401 struct hostapd_config *conf,
3402 struct hostapd_freq_params *params,
3403 struct hostapd_freq_params *old_params)
3404 {
3405 int channel;
3406 u8 seg0, seg1;
3407 struct hostapd_hw_modes *mode;
3408
3409 if (!params->channel) {
3410 /* check if the new channel is supported by hw */
3411 params->channel = hostapd_hw_get_channel(hapd, params->freq);
3412 }
3413
3414 channel = params->channel;
3415 if (!channel)
3416 return -1;
3417
3418 mode = hapd->iface->current_mode;
3419
3420 /* if a pointer to old_params is provided we save previous state */
3421 if (old_params &&
3422 hostapd_set_freq_params(old_params, conf->hw_mode,
3423 hostapd_hw_get_freq(hapd, conf->channel),
3424 conf->channel, conf->enable_edmg,
3425 conf->edmg_channel, conf->ieee80211n,
3426 conf->ieee80211ac, conf->ieee80211ax,
3427 conf->secondary_channel,
3428 hostapd_get_oper_chwidth(conf),
3429 hostapd_get_oper_centr_freq_seg0_idx(conf),
3430 hostapd_get_oper_centr_freq_seg1_idx(conf),
3431 conf->vht_capab,
3432 mode ? &mode->he_capab[IEEE80211_MODE_AP] :
3433 NULL))
3434 return -1;
3435
3436 switch (params->bandwidth) {
3437 case 0:
3438 case 20:
3439 case 40:
3440 hostapd_set_oper_chwidth(conf, CHANWIDTH_USE_HT);
3441 break;
3442 case 80:
3443 if (params->center_freq2)
3444 hostapd_set_oper_chwidth(conf, CHANWIDTH_80P80MHZ);
3445 else
3446 hostapd_set_oper_chwidth(conf, CHANWIDTH_80MHZ);
3447 break;
3448 case 160:
3449 hostapd_set_oper_chwidth(conf, CHANWIDTH_160MHZ);
3450 break;
3451 default:
3452 return -1;
3453 }
3454
3455 conf->channel = channel;
3456 conf->ieee80211n = params->ht_enabled;
3457 conf->secondary_channel = params->sec_channel_offset;
3458 ieee80211_freq_to_chan(params->center_freq1,
3459 &seg0);
3460 ieee80211_freq_to_chan(params->center_freq2,
3461 &seg1);
3462 hostapd_set_oper_centr_freq_seg0_idx(conf, seg0);
3463 hostapd_set_oper_centr_freq_seg1_idx(conf, seg1);
3464
3465 /* TODO: maybe call here hostapd_config_check here? */
3466
3467 return 0;
3468 }
3469
3470
hostapd_fill_csa_settings(struct hostapd_data * hapd,struct csa_settings * settings)3471 static int hostapd_fill_csa_settings(struct hostapd_data *hapd,
3472 struct csa_settings *settings)
3473 {
3474 struct hostapd_iface *iface = hapd->iface;
3475 struct hostapd_freq_params old_freq;
3476 int ret;
3477 u8 chan, bandwidth;
3478
3479 os_memset(&old_freq, 0, sizeof(old_freq));
3480 if (!iface || !iface->freq || hapd->csa_in_progress)
3481 return -1;
3482
3483 switch (settings->freq_params.bandwidth) {
3484 case 80:
3485 if (settings->freq_params.center_freq2)
3486 bandwidth = CHANWIDTH_80P80MHZ;
3487 else
3488 bandwidth = CHANWIDTH_80MHZ;
3489 break;
3490 case 160:
3491 bandwidth = CHANWIDTH_160MHZ;
3492 break;
3493 default:
3494 bandwidth = CHANWIDTH_USE_HT;
3495 break;
3496 }
3497
3498 if (ieee80211_freq_to_channel_ext(
3499 settings->freq_params.freq,
3500 settings->freq_params.sec_channel_offset,
3501 bandwidth,
3502 &hapd->iface->cs_oper_class,
3503 &chan) == NUM_HOSTAPD_MODES) {
3504 wpa_printf(MSG_DEBUG,
3505 "invalid frequency for channel switch (freq=%d, sec_channel_offset=%d, vht_enabled=%d, he_enabled=%d)",
3506 settings->freq_params.freq,
3507 settings->freq_params.sec_channel_offset,
3508 settings->freq_params.vht_enabled,
3509 settings->freq_params.he_enabled);
3510 return -1;
3511 }
3512
3513 settings->freq_params.channel = chan;
3514
3515 ret = hostapd_change_config_freq(iface->bss[0], iface->conf,
3516 &settings->freq_params,
3517 &old_freq);
3518 if (ret)
3519 return ret;
3520
3521 ret = hostapd_build_beacon_data(hapd, &settings->beacon_after);
3522
3523 /* change back the configuration */
3524 hostapd_change_config_freq(iface->bss[0], iface->conf,
3525 &old_freq, NULL);
3526
3527 if (ret)
3528 return ret;
3529
3530 /* set channel switch parameters for csa ie */
3531 hapd->cs_freq_params = settings->freq_params;
3532 hapd->cs_count = settings->cs_count;
3533 hapd->cs_block_tx = settings->block_tx;
3534
3535 ret = hostapd_build_beacon_data(hapd, &settings->beacon_csa);
3536 if (ret) {
3537 free_beacon_data(&settings->beacon_after);
3538 return ret;
3539 }
3540
3541 settings->counter_offset_beacon[0] = hapd->cs_c_off_beacon;
3542 settings->counter_offset_presp[0] = hapd->cs_c_off_proberesp;
3543 settings->counter_offset_beacon[1] = hapd->cs_c_off_ecsa_beacon;
3544 settings->counter_offset_presp[1] = hapd->cs_c_off_ecsa_proberesp;
3545
3546 return 0;
3547 }
3548
3549
hostapd_cleanup_cs_params(struct hostapd_data * hapd)3550 void hostapd_cleanup_cs_params(struct hostapd_data *hapd)
3551 {
3552 os_memset(&hapd->cs_freq_params, 0, sizeof(hapd->cs_freq_params));
3553 hapd->cs_count = 0;
3554 hapd->cs_block_tx = 0;
3555 hapd->cs_c_off_beacon = 0;
3556 hapd->cs_c_off_proberesp = 0;
3557 hapd->csa_in_progress = 0;
3558 hapd->cs_c_off_ecsa_beacon = 0;
3559 hapd->cs_c_off_ecsa_proberesp = 0;
3560 }
3561
3562
hostapd_chan_switch_config(struct hostapd_data * hapd,struct hostapd_freq_params * freq_params)3563 void hostapd_chan_switch_config(struct hostapd_data *hapd,
3564 struct hostapd_freq_params *freq_params)
3565 {
3566 if (freq_params->he_enabled)
3567 hapd->iconf->ch_switch_he_config |= CH_SWITCH_HE_ENABLED;
3568 else
3569 hapd->iconf->ch_switch_he_config |= CH_SWITCH_HE_DISABLED;
3570
3571 if (freq_params->vht_enabled)
3572 hapd->iconf->ch_switch_vht_config |= CH_SWITCH_VHT_ENABLED;
3573 else
3574 hapd->iconf->ch_switch_vht_config |= CH_SWITCH_VHT_DISABLED;
3575
3576 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
3577 HOSTAPD_LEVEL_INFO,
3578 "CHAN_SWITCH HE config 0x%x VHT config 0x%x",
3579 hapd->iconf->ch_switch_he_config,
3580 hapd->iconf->ch_switch_vht_config);
3581 }
3582
3583
hostapd_switch_channel(struct hostapd_data * hapd,struct csa_settings * settings)3584 int hostapd_switch_channel(struct hostapd_data *hapd,
3585 struct csa_settings *settings)
3586 {
3587 int ret;
3588
3589 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
3590 wpa_printf(MSG_INFO, "CSA is not supported");
3591 return -1;
3592 }
3593
3594 ret = hostapd_fill_csa_settings(hapd, settings);
3595 if (ret)
3596 return ret;
3597
3598 ret = hostapd_drv_switch_channel(hapd, settings);
3599 free_beacon_data(&settings->beacon_csa);
3600 free_beacon_data(&settings->beacon_after);
3601
3602 if (ret) {
3603 /* if we failed, clean cs parameters */
3604 hostapd_cleanup_cs_params(hapd);
3605 return ret;
3606 }
3607
3608 hapd->csa_in_progress = 1;
3609 return 0;
3610 }
3611
3612
3613 void
hostapd_switch_channel_fallback(struct hostapd_iface * iface,const struct hostapd_freq_params * freq_params)3614 hostapd_switch_channel_fallback(struct hostapd_iface *iface,
3615 const struct hostapd_freq_params *freq_params)
3616 {
3617 int seg0_idx = 0, seg1_idx = 0, bw = CHANWIDTH_USE_HT;
3618
3619 wpa_printf(MSG_DEBUG, "Restarting all CSA-related BSSes");
3620
3621 if (freq_params->center_freq1)
3622 seg0_idx = 36 + (freq_params->center_freq1 - 5180) / 5;
3623 if (freq_params->center_freq2)
3624 seg1_idx = 36 + (freq_params->center_freq2 - 5180) / 5;
3625
3626 switch (freq_params->bandwidth) {
3627 case 0:
3628 case 20:
3629 case 40:
3630 bw = CHANWIDTH_USE_HT;
3631 break;
3632 case 80:
3633 if (freq_params->center_freq2)
3634 bw = CHANWIDTH_80P80MHZ;
3635 else
3636 bw = CHANWIDTH_80MHZ;
3637 break;
3638 case 160:
3639 bw = CHANWIDTH_160MHZ;
3640 break;
3641 default:
3642 wpa_printf(MSG_WARNING, "Unknown CSA bandwidth: %d",
3643 freq_params->bandwidth);
3644 break;
3645 }
3646
3647 iface->freq = freq_params->freq;
3648 iface->conf->channel = freq_params->channel;
3649 iface->conf->secondary_channel = freq_params->sec_channel_offset;
3650 hostapd_set_oper_centr_freq_seg0_idx(iface->conf, seg0_idx);
3651 hostapd_set_oper_centr_freq_seg1_idx(iface->conf, seg1_idx);
3652 hostapd_set_oper_chwidth(iface->conf, bw);
3653 iface->conf->ieee80211n = freq_params->ht_enabled;
3654 iface->conf->ieee80211ac = freq_params->vht_enabled;
3655 iface->conf->ieee80211ax = freq_params->he_enabled;
3656
3657 /*
3658 * cs_params must not be cleared earlier because the freq_params
3659 * argument may actually point to one of these.
3660 * These params will be cleared during interface disable below.
3661 */
3662 hostapd_disable_iface(iface);
3663 hostapd_enable_iface(iface);
3664 }
3665
3666 #endif /* NEED_AP_MLME */
3667
3668
hostapd_get_iface(struct hapd_interfaces * interfaces,const char * ifname)3669 struct hostapd_data * hostapd_get_iface(struct hapd_interfaces *interfaces,
3670 const char *ifname)
3671 {
3672 size_t i, j;
3673
3674 for (i = 0; i < interfaces->count; i++) {
3675 struct hostapd_iface *iface = interfaces->iface[i];
3676
3677 for (j = 0; j < iface->num_bss; j++) {
3678 struct hostapd_data *hapd = iface->bss[j];
3679
3680 if (os_strcmp(ifname, hapd->conf->iface) == 0)
3681 return hapd;
3682 }
3683 }
3684
3685 return NULL;
3686 }
3687
3688
hostapd_periodic_iface(struct hostapd_iface * iface)3689 void hostapd_periodic_iface(struct hostapd_iface *iface)
3690 {
3691 size_t i;
3692
3693 ap_list_timer(iface);
3694
3695 for (i = 0; i < iface->num_bss; i++) {
3696 struct hostapd_data *hapd = iface->bss[i];
3697
3698 if (!hapd->started)
3699 continue;
3700
3701 #ifndef CONFIG_NO_RADIUS
3702 hostapd_acl_expire(hapd);
3703 #endif /* CONFIG_NO_RADIUS */
3704 }
3705 }
3706
3707
3708 #ifdef CONFIG_OCV
hostapd_ocv_check_csa_sa_query(void * eloop_ctx,void * timeout_ctx)3709 void hostapd_ocv_check_csa_sa_query(void *eloop_ctx, void *timeout_ctx)
3710 {
3711 struct hostapd_data *hapd = eloop_ctx;
3712 struct sta_info *sta;
3713
3714 wpa_printf(MSG_DEBUG, "OCV: Post-CSA SA Query initiation check");
3715
3716 for (sta = hapd->sta_list; sta; sta = sta->next) {
3717 if (!sta->post_csa_sa_query)
3718 continue;
3719
3720 wpa_printf(MSG_DEBUG, "OCV: OCVC STA " MACSTR
3721 " did not start SA Query after CSA - disconnect",
3722 MAC2STR(sta->addr));
3723 ap_sta_disconnect(hapd, sta, sta->addr,
3724 WLAN_REASON_PREV_AUTH_NOT_VALID);
3725 }
3726 }
3727 #endif /* CONFIG_OCV */
3728