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 "common/ieee802_11_defs.h"
17 #include "common/wpa_ctrl.h"
18 #include "common/hw_features_common.h"
19 #include "radius/radius_client.h"
20 #include "radius/radius_das.h"
21 #include "eap_server/tncs.h"
22 #include "eapol_auth/eapol_auth_sm.h"
23 #include "eapol_auth/eapol_auth_sm_i.h"
24 #include "fst/fst.h"
25 #include "hostapd.h"
26 #include "authsrv.h"
27 #include "sta_info.h"
28 #include "accounting.h"
29 #include "ap_list.h"
30 #include "beacon.h"
31 #include "iapp.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 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
62 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd);
63 static int setup_interface2(struct hostapd_iface *iface);
64 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx);
65 static void hostapd_interface_setup_failure_handler(void *eloop_ctx,
66 void *timeout_ctx);
67
68
hostapd_for_each_interface(struct hapd_interfaces * interfaces,int (* cb)(struct hostapd_iface * iface,void * ctx),void * ctx)69 int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
70 int (*cb)(struct hostapd_iface *iface,
71 void *ctx), void *ctx)
72 {
73 size_t i;
74 int ret;
75
76 for (i = 0; i < interfaces->count; i++) {
77 ret = cb(interfaces->iface[i], ctx);
78 if (ret)
79 return ret;
80 }
81
82 return 0;
83 }
84
85
hostapd_reconfig_encryption(struct hostapd_data * hapd)86 void hostapd_reconfig_encryption(struct hostapd_data *hapd)
87 {
88 if (hapd->wpa_auth)
89 return;
90
91 hostapd_set_privacy(hapd, 0);
92 hostapd_setup_encryption(hapd->conf->iface, hapd);
93 }
94
95
hostapd_reload_bss(struct hostapd_data * hapd)96 static void hostapd_reload_bss(struct hostapd_data *hapd)
97 {
98 struct hostapd_ssid *ssid;
99
100 if (!hapd->started)
101 return;
102
103 if (hapd->conf->wmm_enabled < 0)
104 hapd->conf->wmm_enabled = hapd->iconf->ieee80211n;
105
106 #ifndef CONFIG_NO_RADIUS
107 radius_client_reconfig(hapd->radius, hapd->conf->radius);
108 #endif /* CONFIG_NO_RADIUS */
109
110 ssid = &hapd->conf->ssid;
111 if (!ssid->wpa_psk_set && ssid->wpa_psk && !ssid->wpa_psk->next &&
112 ssid->wpa_passphrase_set && ssid->wpa_passphrase) {
113 /*
114 * Force PSK to be derived again since SSID or passphrase may
115 * have changed.
116 */
117 hostapd_config_clear_wpa_psk(&hapd->conf->ssid.wpa_psk);
118 }
119 if (hostapd_setup_wpa_psk(hapd->conf)) {
120 wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
121 "after reloading configuration");
122 }
123
124 if (hapd->conf->ieee802_1x || hapd->conf->wpa)
125 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1);
126 else
127 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
128
129 if ((hapd->conf->wpa || hapd->conf->osen) && hapd->wpa_auth == NULL) {
130 hostapd_setup_wpa(hapd);
131 if (hapd->wpa_auth)
132 wpa_init_keys(hapd->wpa_auth);
133 } else if (hapd->conf->wpa) {
134 const u8 *wpa_ie;
135 size_t wpa_ie_len;
136 hostapd_reconfig_wpa(hapd);
137 wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
138 if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len))
139 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
140 "the kernel driver.");
141 } else if (hapd->wpa_auth) {
142 wpa_deinit(hapd->wpa_auth);
143 hapd->wpa_auth = NULL;
144 hostapd_set_privacy(hapd, 0);
145 hostapd_setup_encryption(hapd->conf->iface, hapd);
146 hostapd_set_generic_elem(hapd, (u8 *) "", 0);
147 }
148
149 ieee802_11_set_beacon(hapd);
150 hostapd_update_wps(hapd);
151
152 if (hapd->conf->ssid.ssid_set &&
153 hostapd_set_ssid(hapd, hapd->conf->ssid.ssid,
154 hapd->conf->ssid.ssid_len)) {
155 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
156 /* try to continue */
157 }
158 wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
159 }
160
161
hostapd_clear_old(struct hostapd_iface * iface)162 static void hostapd_clear_old(struct hostapd_iface *iface)
163 {
164 size_t j;
165
166 /*
167 * Deauthenticate all stations since the new configuration may not
168 * allow them to use the BSS anymore.
169 */
170 for (j = 0; j < iface->num_bss; j++) {
171 hostapd_flush_old_stations(iface->bss[j],
172 WLAN_REASON_PREV_AUTH_NOT_VALID);
173 hostapd_broadcast_wep_clear(iface->bss[j]);
174
175 #ifndef CONFIG_NO_RADIUS
176 /* TODO: update dynamic data based on changed configuration
177 * items (e.g., open/close sockets, etc.) */
178 radius_client_flush(iface->bss[j]->radius, 0);
179 #endif /* CONFIG_NO_RADIUS */
180 }
181 }
182
183
hostapd_iface_conf_changed(struct hostapd_config * newconf,struct hostapd_config * oldconf)184 static int hostapd_iface_conf_changed(struct hostapd_config *newconf,
185 struct hostapd_config *oldconf)
186 {
187 size_t i;
188
189 if (newconf->num_bss != oldconf->num_bss)
190 return 1;
191
192 for (i = 0; i < newconf->num_bss; i++) {
193 if (os_strcmp(newconf->bss[i]->iface,
194 oldconf->bss[i]->iface) != 0)
195 return 1;
196 }
197
198 return 0;
199 }
200
201
hostapd_reload_config(struct hostapd_iface * iface)202 int hostapd_reload_config(struct hostapd_iface *iface)
203 {
204 struct hapd_interfaces *interfaces = iface->interfaces;
205 struct hostapd_data *hapd = iface->bss[0];
206 struct hostapd_config *newconf, *oldconf;
207 size_t j;
208
209 if (iface->config_fname == NULL) {
210 /* Only in-memory config in use - assume it has been updated */
211 hostapd_clear_old(iface);
212 for (j = 0; j < iface->num_bss; j++)
213 hostapd_reload_bss(iface->bss[j]);
214 return 0;
215 }
216
217 if (iface->interfaces == NULL ||
218 iface->interfaces->config_read_cb == NULL)
219 return -1;
220 newconf = iface->interfaces->config_read_cb(iface->config_fname);
221 if (newconf == NULL)
222 return -1;
223
224 hostapd_clear_old(iface);
225
226 oldconf = hapd->iconf;
227 if (hostapd_iface_conf_changed(newconf, oldconf)) {
228 char *fname;
229 int res;
230
231 wpa_printf(MSG_DEBUG,
232 "Configuration changes include interface/BSS modification - force full disable+enable sequence");
233 fname = os_strdup(iface->config_fname);
234 if (!fname) {
235 hostapd_config_free(newconf);
236 return -1;
237 }
238 hostapd_remove_iface(interfaces, hapd->conf->iface);
239 iface = hostapd_init(interfaces, fname);
240 os_free(fname);
241 hostapd_config_free(newconf);
242 if (!iface) {
243 wpa_printf(MSG_ERROR,
244 "Failed to initialize interface on config reload");
245 return -1;
246 }
247 iface->interfaces = interfaces;
248 interfaces->iface[interfaces->count] = iface;
249 interfaces->count++;
250 res = hostapd_enable_iface(iface);
251 if (res < 0)
252 wpa_printf(MSG_ERROR,
253 "Failed to enable interface on config reload");
254 return res;
255 }
256 iface->conf = newconf;
257
258 for (j = 0; j < iface->num_bss; j++) {
259 hapd = iface->bss[j];
260 hapd->iconf = newconf;
261 hapd->iconf->channel = oldconf->channel;
262 hapd->iconf->acs = oldconf->acs;
263 hapd->iconf->secondary_channel = oldconf->secondary_channel;
264 hapd->iconf->ieee80211n = oldconf->ieee80211n;
265 hapd->iconf->ieee80211ac = oldconf->ieee80211ac;
266 hapd->iconf->ht_capab = oldconf->ht_capab;
267 hapd->iconf->vht_capab = oldconf->vht_capab;
268 hostapd_set_oper_chwidth(hapd->iconf,
269 hostapd_get_oper_chwidth(oldconf));
270 hostapd_set_oper_centr_freq_seg0_idx(
271 hapd->iconf,
272 hostapd_get_oper_centr_freq_seg0_idx(oldconf));
273 hostapd_set_oper_centr_freq_seg1_idx(
274 hapd->iconf,
275 hostapd_get_oper_centr_freq_seg1_idx(oldconf));
276 hapd->conf = newconf->bss[j];
277 hostapd_reload_bss(hapd);
278 }
279
280 hostapd_config_free(oldconf);
281
282
283 return 0;
284 }
285
286
hostapd_broadcast_key_clear_iface(struct hostapd_data * hapd,const char * ifname)287 static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
288 const char *ifname)
289 {
290 int i;
291
292 if (!ifname || !hapd->drv_priv)
293 return;
294 for (i = 0; i < NUM_WEP_KEYS; i++) {
295 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i,
296 0, NULL, 0, NULL, 0)) {
297 wpa_printf(MSG_DEBUG, "Failed to clear default "
298 "encryption keys (ifname=%s keyidx=%d)",
299 ifname, i);
300 }
301 }
302 #ifdef CONFIG_IEEE80211W
303 if (hapd->conf->ieee80211w) {
304 for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
305 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE,
306 NULL, i, 0, NULL,
307 0, NULL, 0)) {
308 wpa_printf(MSG_DEBUG, "Failed to clear "
309 "default mgmt encryption keys "
310 "(ifname=%s keyidx=%d)", ifname, i);
311 }
312 }
313 }
314 #endif /* CONFIG_IEEE80211W */
315 }
316
317
hostapd_broadcast_wep_clear(struct hostapd_data * hapd)318 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
319 {
320 hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
321 return 0;
322 }
323
324
hostapd_broadcast_wep_set(struct hostapd_data * hapd)325 static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
326 {
327 int errors = 0, idx;
328 struct hostapd_ssid *ssid = &hapd->conf->ssid;
329
330 idx = ssid->wep.idx;
331 if (ssid->wep.default_len &&
332 hostapd_drv_set_key(hapd->conf->iface,
333 hapd, WPA_ALG_WEP, broadcast_ether_addr, idx,
334 1, NULL, 0, ssid->wep.key[idx],
335 ssid->wep.len[idx])) {
336 wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
337 errors++;
338 }
339
340 return errors;
341 }
342
343
hostapd_free_hapd_data(struct hostapd_data * hapd)344 static void hostapd_free_hapd_data(struct hostapd_data *hapd)
345 {
346 os_free(hapd->probereq_cb);
347 hapd->probereq_cb = NULL;
348 hapd->num_probereq_cb = 0;
349
350 #ifdef CONFIG_P2P
351 wpabuf_free(hapd->p2p_beacon_ie);
352 hapd->p2p_beacon_ie = NULL;
353 wpabuf_free(hapd->p2p_probe_resp_ie);
354 hapd->p2p_probe_resp_ie = NULL;
355 #endif /* CONFIG_P2P */
356
357 if (!hapd->started) {
358 wpa_printf(MSG_ERROR, "%s: Interface %s wasn't started",
359 __func__, hapd->conf ? hapd->conf->iface : "N/A");
360 return;
361 }
362 hapd->started = 0;
363 hapd->beacon_set_done = 0;
364
365 wpa_printf(MSG_DEBUG, "%s(%s)", __func__, hapd->conf->iface);
366 iapp_deinit(hapd->iapp);
367 hapd->iapp = NULL;
368 accounting_deinit(hapd);
369 hostapd_deinit_wpa(hapd);
370 vlan_deinit(hapd);
371 hostapd_acl_deinit(hapd);
372 #ifndef CONFIG_NO_RADIUS
373 radius_client_deinit(hapd->radius);
374 hapd->radius = NULL;
375 radius_das_deinit(hapd->radius_das);
376 hapd->radius_das = NULL;
377 #endif /* CONFIG_NO_RADIUS */
378
379 hostapd_deinit_wps(hapd);
380 ieee802_1x_dealloc_kay_sm_hapd(hapd);
381 #ifdef CONFIG_DPP
382 hostapd_dpp_deinit(hapd);
383 gas_query_ap_deinit(hapd->gas);
384 #endif /* CONFIG_DPP */
385
386 authsrv_deinit(hapd);
387
388 if (hapd->interface_added) {
389 hapd->interface_added = 0;
390 if (hostapd_if_remove(hapd, WPA_IF_AP_BSS, hapd->conf->iface)) {
391 wpa_printf(MSG_WARNING,
392 "Failed to remove BSS interface %s",
393 hapd->conf->iface);
394 hapd->interface_added = 1;
395 } else {
396 /*
397 * Since this was a dynamically added interface, the
398 * driver wrapper may have removed its internal instance
399 * and hapd->drv_priv is not valid anymore.
400 */
401 hapd->drv_priv = NULL;
402 }
403 }
404
405 wpabuf_free(hapd->time_adv);
406
407 #ifdef CONFIG_INTERWORKING
408 gas_serv_deinit(hapd);
409 #endif /* CONFIG_INTERWORKING */
410
411 bss_load_update_deinit(hapd);
412 ndisc_snoop_deinit(hapd);
413 dhcp_snoop_deinit(hapd);
414 x_snoop_deinit(hapd);
415
416 #ifdef CONFIG_SQLITE
417 bin_clear_free(hapd->tmp_eap_user.identity,
418 hapd->tmp_eap_user.identity_len);
419 bin_clear_free(hapd->tmp_eap_user.password,
420 hapd->tmp_eap_user.password_len);
421 #endif /* CONFIG_SQLITE */
422
423 #ifdef CONFIG_MESH
424 wpabuf_free(hapd->mesh_pending_auth);
425 hapd->mesh_pending_auth = NULL;
426 #endif /* CONFIG_MESH */
427
428 hostapd_clean_rrm(hapd);
429 fils_hlp_deinit(hapd);
430
431 #ifdef CONFIG_SAE
432 {
433 struct hostapd_sae_commit_queue *q;
434
435 while ((q = dl_list_first(&hapd->sae_commit_queue,
436 struct hostapd_sae_commit_queue,
437 list))) {
438 dl_list_del(&q->list);
439 os_free(q);
440 }
441 }
442 eloop_cancel_timeout(auth_sae_process_commit, hapd, NULL);
443 #endif /* CONFIG_SAE */
444 }
445
446
447 /**
448 * hostapd_cleanup - Per-BSS cleanup (deinitialization)
449 * @hapd: Pointer to BSS data
450 *
451 * This function is used to free all per-BSS data structures and resources.
452 * Most of the modules that are initialized in hostapd_setup_bss() are
453 * deinitialized here.
454 */
hostapd_cleanup(struct hostapd_data * hapd)455 static void hostapd_cleanup(struct hostapd_data *hapd)
456 {
457 wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s))", __func__, hapd,
458 hapd->conf ? hapd->conf->iface : "N/A");
459 if (hapd->iface->interfaces &&
460 hapd->iface->interfaces->ctrl_iface_deinit) {
461 wpa_msg(hapd->msg_ctx, MSG_INFO, WPA_EVENT_TERMINATING);
462 hapd->iface->interfaces->ctrl_iface_deinit(hapd);
463 }
464 hostapd_free_hapd_data(hapd);
465 }
466
467
sta_track_deinit(struct hostapd_iface * iface)468 static void sta_track_deinit(struct hostapd_iface *iface)
469 {
470 struct hostapd_sta_info *info;
471
472 if (!iface->num_sta_seen)
473 return;
474
475 while ((info = dl_list_first(&iface->sta_seen, struct hostapd_sta_info,
476 list))) {
477 dl_list_del(&info->list);
478 iface->num_sta_seen--;
479 sta_track_del(info);
480 }
481 }
482
483
hostapd_cleanup_iface_partial(struct hostapd_iface * iface)484 static void hostapd_cleanup_iface_partial(struct hostapd_iface *iface)
485 {
486 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
487 #ifdef CONFIG_IEEE80211N
488 #ifdef NEED_AP_MLME
489 hostapd_stop_setup_timers(iface);
490 #endif /* NEED_AP_MLME */
491 #endif /* CONFIG_IEEE80211N */
492 if (iface->current_mode)
493 acs_cleanup(iface);
494 hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
495 iface->hw_features = NULL;
496 iface->current_mode = NULL;
497 os_free(iface->current_rates);
498 iface->current_rates = NULL;
499 os_free(iface->basic_rates);
500 iface->basic_rates = NULL;
501 ap_list_deinit(iface);
502 sta_track_deinit(iface);
503 airtime_policy_update_deinit(iface);
504 }
505
506
507 /**
508 * hostapd_cleanup_iface - Complete per-interface cleanup
509 * @iface: Pointer to interface data
510 *
511 * This function is called after per-BSS data structures are deinitialized
512 * with hostapd_cleanup().
513 */
hostapd_cleanup_iface(struct hostapd_iface * iface)514 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
515 {
516 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
517 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
518 eloop_cancel_timeout(hostapd_interface_setup_failure_handler, iface,
519 NULL);
520
521 hostapd_cleanup_iface_partial(iface);
522 hostapd_config_free(iface->conf);
523 iface->conf = NULL;
524
525 os_free(iface->config_fname);
526 os_free(iface->bss);
527 wpa_printf(MSG_DEBUG, "%s: free iface=%p", __func__, iface);
528 os_free(iface);
529 }
530
531
hostapd_clear_wep(struct hostapd_data * hapd)532 static void hostapd_clear_wep(struct hostapd_data *hapd)
533 {
534 if (hapd->drv_priv && !hapd->iface->driver_ap_teardown && hapd->conf) {
535 hostapd_set_privacy(hapd, 0);
536 hostapd_broadcast_wep_clear(hapd);
537 }
538 }
539
540
hostapd_setup_encryption(char * iface,struct hostapd_data * hapd)541 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
542 {
543 int i;
544
545 hostapd_broadcast_wep_set(hapd);
546
547 if (hapd->conf->ssid.wep.default_len) {
548 hostapd_set_privacy(hapd, 1);
549 return 0;
550 }
551
552 /*
553 * When IEEE 802.1X is not enabled, the driver may need to know how to
554 * set authentication algorithms for static WEP.
555 */
556 hostapd_drv_set_authmode(hapd, hapd->conf->auth_algs);
557
558 for (i = 0; i < 4; i++) {
559 if (hapd->conf->ssid.wep.key[i] &&
560 hostapd_drv_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
561 i == hapd->conf->ssid.wep.idx, NULL, 0,
562 hapd->conf->ssid.wep.key[i],
563 hapd->conf->ssid.wep.len[i])) {
564 wpa_printf(MSG_WARNING, "Could not set WEP "
565 "encryption.");
566 return -1;
567 }
568 if (hapd->conf->ssid.wep.key[i] &&
569 i == hapd->conf->ssid.wep.idx)
570 hostapd_set_privacy(hapd, 1);
571 }
572
573 return 0;
574 }
575
576
hostapd_flush_old_stations(struct hostapd_data * hapd,u16 reason)577 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason)
578 {
579 int ret = 0;
580 u8 addr[ETH_ALEN];
581
582 if (hostapd_drv_none(hapd) || hapd->drv_priv == NULL)
583 return 0;
584
585 if (!hapd->iface->driver_ap_teardown) {
586 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
587 "Flushing old station entries");
588
589 if (hostapd_flush(hapd)) {
590 wpa_msg(hapd->msg_ctx, MSG_WARNING,
591 "Could not connect to kernel driver");
592 ret = -1;
593 }
594 }
595 if (hapd->conf && hapd->conf->broadcast_deauth) {
596 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
597 "Deauthenticate all stations");
598 os_memset(addr, 0xff, ETH_ALEN);
599 hostapd_drv_sta_deauth(hapd, addr, reason);
600 }
601 hostapd_free_stas(hapd);
602
603 return ret;
604 }
605
606
hostapd_bss_deinit_no_free(struct hostapd_data * hapd)607 static void hostapd_bss_deinit_no_free(struct hostapd_data *hapd)
608 {
609 hostapd_free_stas(hapd);
610 hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
611 hostapd_clear_wep(hapd);
612 }
613
614
615 /**
616 * hostapd_validate_bssid_configuration - Validate BSSID configuration
617 * @iface: Pointer to interface data
618 * Returns: 0 on success, -1 on failure
619 *
620 * This function is used to validate that the configured BSSIDs are valid.
621 */
hostapd_validate_bssid_configuration(struct hostapd_iface * iface)622 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
623 {
624 u8 mask[ETH_ALEN] = { 0 };
625 struct hostapd_data *hapd = iface->bss[0];
626 unsigned int i = iface->conf->num_bss, bits = 0, j;
627 int auto_addr = 0;
628
629 if (hostapd_drv_none(hapd))
630 return 0;
631
632 if (iface->conf->use_driver_iface_addr)
633 return 0;
634
635 /* Generate BSSID mask that is large enough to cover the BSSIDs. */
636
637 /* Determine the bits necessary to cover the number of BSSIDs. */
638 for (i--; i; i >>= 1)
639 bits++;
640
641 /* Determine the bits necessary to any configured BSSIDs,
642 if they are higher than the number of BSSIDs. */
643 for (j = 0; j < iface->conf->num_bss; j++) {
644 if (is_zero_ether_addr(iface->conf->bss[j]->bssid)) {
645 if (j)
646 auto_addr++;
647 continue;
648 }
649
650 for (i = 0; i < ETH_ALEN; i++) {
651 mask[i] |=
652 iface->conf->bss[j]->bssid[i] ^
653 hapd->own_addr[i];
654 }
655 }
656
657 if (!auto_addr)
658 goto skip_mask_ext;
659
660 for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
661 ;
662 j = 0;
663 if (i < ETH_ALEN) {
664 j = (5 - i) * 8;
665
666 while (mask[i] != 0) {
667 mask[i] >>= 1;
668 j++;
669 }
670 }
671
672 if (bits < j)
673 bits = j;
674
675 if (bits > 40) {
676 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
677 bits);
678 return -1;
679 }
680
681 os_memset(mask, 0xff, ETH_ALEN);
682 j = bits / 8;
683 for (i = 5; i > 5 - j; i--)
684 mask[i] = 0;
685 j = bits % 8;
686 while (j) {
687 j--;
688 mask[i] <<= 1;
689 }
690
691 skip_mask_ext:
692 wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
693 (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
694
695 if (!auto_addr)
696 return 0;
697
698 for (i = 0; i < ETH_ALEN; i++) {
699 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
700 wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
701 " for start address " MACSTR ".",
702 MAC2STR(mask), MAC2STR(hapd->own_addr));
703 wpa_printf(MSG_ERROR, "Start address must be the "
704 "first address in the block (i.e., addr "
705 "AND mask == addr).");
706 return -1;
707 }
708 }
709
710 return 0;
711 }
712
713
mac_in_conf(struct hostapd_config * conf,const void * a)714 static int mac_in_conf(struct hostapd_config *conf, const void *a)
715 {
716 size_t i;
717
718 for (i = 0; i < conf->num_bss; i++) {
719 if (hostapd_mac_comp(conf->bss[i]->bssid, a) == 0) {
720 return 1;
721 }
722 }
723
724 return 0;
725 }
726
727
728 #ifndef CONFIG_NO_RADIUS
729
hostapd_das_nas_mismatch(struct hostapd_data * hapd,struct radius_das_attrs * attr)730 static int hostapd_das_nas_mismatch(struct hostapd_data *hapd,
731 struct radius_das_attrs *attr)
732 {
733 if (attr->nas_identifier &&
734 (!hapd->conf->nas_identifier ||
735 os_strlen(hapd->conf->nas_identifier) !=
736 attr->nas_identifier_len ||
737 os_memcmp(hapd->conf->nas_identifier, attr->nas_identifier,
738 attr->nas_identifier_len) != 0)) {
739 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-Identifier mismatch");
740 return 1;
741 }
742
743 if (attr->nas_ip_addr &&
744 (hapd->conf->own_ip_addr.af != AF_INET ||
745 os_memcmp(&hapd->conf->own_ip_addr.u.v4, attr->nas_ip_addr, 4) !=
746 0)) {
747 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IP-Address mismatch");
748 return 1;
749 }
750
751 #ifdef CONFIG_IPV6
752 if (attr->nas_ipv6_addr &&
753 (hapd->conf->own_ip_addr.af != AF_INET6 ||
754 os_memcmp(&hapd->conf->own_ip_addr.u.v6, attr->nas_ipv6_addr, 16)
755 != 0)) {
756 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IPv6-Address mismatch");
757 return 1;
758 }
759 #endif /* CONFIG_IPV6 */
760
761 return 0;
762 }
763
764
hostapd_das_find_sta(struct hostapd_data * hapd,struct radius_das_attrs * attr,int * multi)765 static struct sta_info * hostapd_das_find_sta(struct hostapd_data *hapd,
766 struct radius_das_attrs *attr,
767 int *multi)
768 {
769 struct sta_info *selected, *sta;
770 char buf[128];
771 int num_attr = 0;
772 int count;
773
774 *multi = 0;
775
776 for (sta = hapd->sta_list; sta; sta = sta->next)
777 sta->radius_das_match = 1;
778
779 if (attr->sta_addr) {
780 num_attr++;
781 sta = ap_get_sta(hapd, attr->sta_addr);
782 if (!sta) {
783 wpa_printf(MSG_DEBUG,
784 "RADIUS DAS: No Calling-Station-Id match");
785 return NULL;
786 }
787
788 selected = sta;
789 for (sta = hapd->sta_list; sta; sta = sta->next) {
790 if (sta != selected)
791 sta->radius_das_match = 0;
792 }
793 wpa_printf(MSG_DEBUG, "RADIUS DAS: Calling-Station-Id match");
794 }
795
796 if (attr->acct_session_id) {
797 num_attr++;
798 if (attr->acct_session_id_len != 16) {
799 wpa_printf(MSG_DEBUG,
800 "RADIUS DAS: Acct-Session-Id cannot match");
801 return NULL;
802 }
803 count = 0;
804
805 for (sta = hapd->sta_list; sta; sta = sta->next) {
806 if (!sta->radius_das_match)
807 continue;
808 os_snprintf(buf, sizeof(buf), "%016llX",
809 (unsigned long long) sta->acct_session_id);
810 if (os_memcmp(attr->acct_session_id, buf, 16) != 0)
811 sta->radius_das_match = 0;
812 else
813 count++;
814 }
815
816 if (count == 0) {
817 wpa_printf(MSG_DEBUG,
818 "RADIUS DAS: No matches remaining after Acct-Session-Id check");
819 return NULL;
820 }
821 wpa_printf(MSG_DEBUG, "RADIUS DAS: Acct-Session-Id match");
822 }
823
824 if (attr->acct_multi_session_id) {
825 num_attr++;
826 if (attr->acct_multi_session_id_len != 16) {
827 wpa_printf(MSG_DEBUG,
828 "RADIUS DAS: Acct-Multi-Session-Id cannot match");
829 return NULL;
830 }
831 count = 0;
832
833 for (sta = hapd->sta_list; sta; sta = sta->next) {
834 if (!sta->radius_das_match)
835 continue;
836 if (!sta->eapol_sm ||
837 !sta->eapol_sm->acct_multi_session_id) {
838 sta->radius_das_match = 0;
839 continue;
840 }
841 os_snprintf(buf, sizeof(buf), "%016llX",
842 (unsigned long long)
843 sta->eapol_sm->acct_multi_session_id);
844 if (os_memcmp(attr->acct_multi_session_id, buf, 16) !=
845 0)
846 sta->radius_das_match = 0;
847 else
848 count++;
849 }
850
851 if (count == 0) {
852 wpa_printf(MSG_DEBUG,
853 "RADIUS DAS: No matches remaining after Acct-Multi-Session-Id check");
854 return NULL;
855 }
856 wpa_printf(MSG_DEBUG,
857 "RADIUS DAS: Acct-Multi-Session-Id match");
858 }
859
860 if (attr->cui) {
861 num_attr++;
862 count = 0;
863
864 for (sta = hapd->sta_list; sta; sta = sta->next) {
865 struct wpabuf *cui;
866
867 if (!sta->radius_das_match)
868 continue;
869 cui = ieee802_1x_get_radius_cui(sta->eapol_sm);
870 if (!cui || wpabuf_len(cui) != attr->cui_len ||
871 os_memcmp(wpabuf_head(cui), attr->cui,
872 attr->cui_len) != 0)
873 sta->radius_das_match = 0;
874 else
875 count++;
876 }
877
878 if (count == 0) {
879 wpa_printf(MSG_DEBUG,
880 "RADIUS DAS: No matches remaining after Chargeable-User-Identity check");
881 return NULL;
882 }
883 wpa_printf(MSG_DEBUG,
884 "RADIUS DAS: Chargeable-User-Identity match");
885 }
886
887 if (attr->user_name) {
888 num_attr++;
889 count = 0;
890
891 for (sta = hapd->sta_list; sta; sta = sta->next) {
892 u8 *identity;
893 size_t identity_len;
894
895 if (!sta->radius_das_match)
896 continue;
897 identity = ieee802_1x_get_identity(sta->eapol_sm,
898 &identity_len);
899 if (!identity ||
900 identity_len != attr->user_name_len ||
901 os_memcmp(identity, attr->user_name, identity_len)
902 != 0)
903 sta->radius_das_match = 0;
904 else
905 count++;
906 }
907
908 if (count == 0) {
909 wpa_printf(MSG_DEBUG,
910 "RADIUS DAS: No matches remaining after User-Name check");
911 return NULL;
912 }
913 wpa_printf(MSG_DEBUG,
914 "RADIUS DAS: User-Name match");
915 }
916
917 if (num_attr == 0) {
918 /*
919 * In theory, we could match all current associations, but it
920 * seems safer to just reject requests that do not include any
921 * session identification attributes.
922 */
923 wpa_printf(MSG_DEBUG,
924 "RADIUS DAS: No session identification attributes included");
925 return NULL;
926 }
927
928 selected = NULL;
929 for (sta = hapd->sta_list; sta; sta = sta->next) {
930 if (sta->radius_das_match) {
931 if (selected) {
932 *multi = 1;
933 return NULL;
934 }
935 selected = sta;
936 }
937 }
938
939 return selected;
940 }
941
942
hostapd_das_disconnect_pmksa(struct hostapd_data * hapd,struct radius_das_attrs * attr)943 static int hostapd_das_disconnect_pmksa(struct hostapd_data *hapd,
944 struct radius_das_attrs *attr)
945 {
946 if (!hapd->wpa_auth)
947 return -1;
948 return wpa_auth_radius_das_disconnect_pmksa(hapd->wpa_auth, attr);
949 }
950
951
952 static enum radius_das_res
hostapd_das_disconnect(void * ctx,struct radius_das_attrs * attr)953 hostapd_das_disconnect(void *ctx, struct radius_das_attrs *attr)
954 {
955 struct hostapd_data *hapd = ctx;
956 struct sta_info *sta;
957 int multi;
958
959 if (hostapd_das_nas_mismatch(hapd, attr))
960 return RADIUS_DAS_NAS_MISMATCH;
961
962 sta = hostapd_das_find_sta(hapd, attr, &multi);
963 if (sta == NULL) {
964 if (multi) {
965 wpa_printf(MSG_DEBUG,
966 "RADIUS DAS: Multiple sessions match - not supported");
967 return RADIUS_DAS_MULTI_SESSION_MATCH;
968 }
969 if (hostapd_das_disconnect_pmksa(hapd, attr) == 0) {
970 wpa_printf(MSG_DEBUG,
971 "RADIUS DAS: PMKSA cache entry matched");
972 return RADIUS_DAS_SUCCESS;
973 }
974 wpa_printf(MSG_DEBUG, "RADIUS DAS: No matching session found");
975 return RADIUS_DAS_SESSION_NOT_FOUND;
976 }
977
978 wpa_printf(MSG_DEBUG, "RADIUS DAS: Found a matching session " MACSTR
979 " - disconnecting", MAC2STR(sta->addr));
980 wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
981
982 hostapd_drv_sta_deauth(hapd, sta->addr,
983 WLAN_REASON_PREV_AUTH_NOT_VALID);
984 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_PREV_AUTH_NOT_VALID);
985
986 return RADIUS_DAS_SUCCESS;
987 }
988
989
990 #ifdef CONFIG_HS20
991 static enum radius_das_res
hostapd_das_coa(void * ctx,struct radius_das_attrs * attr)992 hostapd_das_coa(void *ctx, struct radius_das_attrs *attr)
993 {
994 struct hostapd_data *hapd = ctx;
995 struct sta_info *sta;
996 int multi;
997
998 if (hostapd_das_nas_mismatch(hapd, attr))
999 return RADIUS_DAS_NAS_MISMATCH;
1000
1001 sta = hostapd_das_find_sta(hapd, attr, &multi);
1002 if (!sta) {
1003 if (multi) {
1004 wpa_printf(MSG_DEBUG,
1005 "RADIUS DAS: Multiple sessions match - not supported");
1006 return RADIUS_DAS_MULTI_SESSION_MATCH;
1007 }
1008 wpa_printf(MSG_DEBUG, "RADIUS DAS: No matching session found");
1009 return RADIUS_DAS_SESSION_NOT_FOUND;
1010 }
1011
1012 wpa_printf(MSG_DEBUG, "RADIUS DAS: Found a matching session " MACSTR
1013 " - CoA", MAC2STR(sta->addr));
1014
1015 if (attr->hs20_t_c_filtering) {
1016 if (attr->hs20_t_c_filtering[0] & BIT(0)) {
1017 wpa_printf(MSG_DEBUG,
1018 "HS 2.0: Unexpected Terms and Conditions filtering required in CoA-Request");
1019 return RADIUS_DAS_COA_FAILED;
1020 }
1021
1022 hs20_t_c_filtering(hapd, sta, 0);
1023 }
1024
1025 return RADIUS_DAS_SUCCESS;
1026 }
1027 #else /* CONFIG_HS20 */
1028 #define hostapd_das_coa NULL
1029 #endif /* CONFIG_HS20 */
1030
1031
1032 #ifdef CONFIG_SQLITE
1033
db_table_exists(sqlite3 * db,const char * name)1034 static int db_table_exists(sqlite3 *db, const char *name)
1035 {
1036 char cmd[128];
1037
1038 os_snprintf(cmd, sizeof(cmd), "SELECT 1 FROM %s;", name);
1039 return sqlite3_exec(db, cmd, NULL, NULL, NULL) == SQLITE_OK;
1040 }
1041
1042
db_table_create_radius_attributes(sqlite3 * db)1043 static int db_table_create_radius_attributes(sqlite3 *db)
1044 {
1045 char *err = NULL;
1046 const char *sql =
1047 "CREATE TABLE radius_attributes("
1048 " id INTEGER PRIMARY KEY,"
1049 " sta TEXT,"
1050 " reqtype TEXT,"
1051 " attr TEXT"
1052 ");"
1053 "CREATE INDEX idx_sta_reqtype ON radius_attributes(sta,reqtype);";
1054
1055 wpa_printf(MSG_DEBUG,
1056 "Adding database table for RADIUS attribute information");
1057 if (sqlite3_exec(db, sql, NULL, NULL, &err) != SQLITE_OK) {
1058 wpa_printf(MSG_ERROR, "SQLite error: %s", err);
1059 sqlite3_free(err);
1060 return -1;
1061 }
1062
1063 return 0;
1064 }
1065
1066 #endif /* CONFIG_SQLITE */
1067
1068 #endif /* CONFIG_NO_RADIUS */
1069
1070
1071 /**
1072 * hostapd_setup_bss - Per-BSS setup (initialization)
1073 * @hapd: Pointer to BSS data
1074 * @first: Whether this BSS is the first BSS of an interface; -1 = not first,
1075 * but interface may exist
1076 *
1077 * This function is used to initialize all per-BSS data structures and
1078 * resources. This gets called in a loop for each BSS when an interface is
1079 * initialized. Most of the modules that are initialized here will be
1080 * deinitialized in hostapd_cleanup().
1081 */
hostapd_setup_bss(struct hostapd_data * hapd,int first)1082 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
1083 {
1084 struct hostapd_bss_config *conf = hapd->conf;
1085 u8 ssid[SSID_MAX_LEN + 1];
1086 int ssid_len, set_ssid;
1087 char force_ifname[IFNAMSIZ];
1088 u8 if_addr[ETH_ALEN];
1089 int flush_old_stations = 1;
1090
1091 wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s), first=%d)",
1092 __func__, hapd, conf->iface, first);
1093
1094 #ifdef EAP_SERVER_TNC
1095 if (conf->tnc && tncs_global_init() < 0) {
1096 wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
1097 return -1;
1098 }
1099 #endif /* EAP_SERVER_TNC */
1100
1101 if (hapd->started) {
1102 wpa_printf(MSG_ERROR, "%s: Interface %s was already started",
1103 __func__, conf->iface);
1104 return -1;
1105 }
1106 hapd->started = 1;
1107
1108 if (!first || first == -1) {
1109 u8 *addr = hapd->own_addr;
1110
1111 if (!is_zero_ether_addr(conf->bssid)) {
1112 /* Allocate the configured BSSID. */
1113 os_memcpy(hapd->own_addr, conf->bssid, ETH_ALEN);
1114
1115 if (hostapd_mac_comp(hapd->own_addr,
1116 hapd->iface->bss[0]->own_addr) ==
1117 0) {
1118 wpa_printf(MSG_ERROR, "BSS '%s' may not have "
1119 "BSSID set to the MAC address of "
1120 "the radio", conf->iface);
1121 return -1;
1122 }
1123 } else if (hapd->iconf->use_driver_iface_addr) {
1124 addr = NULL;
1125 } else {
1126 /* Allocate the next available BSSID. */
1127 do {
1128 inc_byte_array(hapd->own_addr, ETH_ALEN);
1129 } while (mac_in_conf(hapd->iconf, hapd->own_addr));
1130 }
1131
1132 hapd->interface_added = 1;
1133 if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS,
1134 conf->iface, addr, hapd,
1135 &hapd->drv_priv, force_ifname, if_addr,
1136 conf->bridge[0] ? conf->bridge : NULL,
1137 first == -1)) {
1138 wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
1139 MACSTR ")", MAC2STR(hapd->own_addr));
1140 hapd->interface_added = 0;
1141 return -1;
1142 }
1143
1144 if (!addr)
1145 os_memcpy(hapd->own_addr, if_addr, ETH_ALEN);
1146 }
1147
1148 if (conf->wmm_enabled < 0)
1149 conf->wmm_enabled = hapd->iconf->ieee80211n;
1150
1151 #ifdef CONFIG_IEEE80211R_AP
1152 if (is_zero_ether_addr(conf->r1_key_holder))
1153 os_memcpy(conf->r1_key_holder, hapd->own_addr, ETH_ALEN);
1154 #endif /* CONFIG_IEEE80211R_AP */
1155
1156 #ifdef CONFIG_MESH
1157 if ((hapd->conf->mesh & MESH_ENABLED) && hapd->iface->mconf == NULL)
1158 flush_old_stations = 0;
1159 #endif /* CONFIG_MESH */
1160
1161 if (flush_old_stations)
1162 hostapd_flush_old_stations(hapd,
1163 WLAN_REASON_PREV_AUTH_NOT_VALID);
1164 hostapd_set_privacy(hapd, 0);
1165
1166 hostapd_broadcast_wep_clear(hapd);
1167 if (hostapd_setup_encryption(conf->iface, hapd))
1168 return -1;
1169
1170 /*
1171 * Fetch the SSID from the system and use it or,
1172 * if one was specified in the config file, verify they
1173 * match.
1174 */
1175 ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
1176 if (ssid_len < 0) {
1177 wpa_printf(MSG_ERROR, "Could not read SSID from system");
1178 return -1;
1179 }
1180 if (conf->ssid.ssid_set) {
1181 /*
1182 * If SSID is specified in the config file and it differs
1183 * from what is being used then force installation of the
1184 * new SSID.
1185 */
1186 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
1187 os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
1188 } else {
1189 /*
1190 * No SSID in the config file; just use the one we got
1191 * from the system.
1192 */
1193 set_ssid = 0;
1194 conf->ssid.ssid_len = ssid_len;
1195 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
1196 }
1197
1198 if (!hostapd_drv_none(hapd)) {
1199 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
1200 " and ssid \"%s\"",
1201 conf->iface, MAC2STR(hapd->own_addr),
1202 wpa_ssid_txt(conf->ssid.ssid, conf->ssid.ssid_len));
1203 }
1204
1205 if (hostapd_setup_wpa_psk(conf)) {
1206 wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
1207 return -1;
1208 }
1209
1210 /* Set SSID for the kernel driver (to be used in beacon and probe
1211 * response frames) */
1212 if (set_ssid && hostapd_set_ssid(hapd, conf->ssid.ssid,
1213 conf->ssid.ssid_len)) {
1214 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
1215 return -1;
1216 }
1217
1218 if (wpa_debug_level <= MSG_MSGDUMP)
1219 conf->radius->msg_dumps = 1;
1220 #ifndef CONFIG_NO_RADIUS
1221
1222 #ifdef CONFIG_SQLITE
1223 if (conf->radius_req_attr_sqlite) {
1224 if (sqlite3_open(conf->radius_req_attr_sqlite,
1225 &hapd->rad_attr_db)) {
1226 wpa_printf(MSG_ERROR, "Could not open SQLite file '%s'",
1227 conf->radius_req_attr_sqlite);
1228 return -1;
1229 }
1230
1231 wpa_printf(MSG_DEBUG, "Opening RADIUS attribute database: %s",
1232 conf->radius_req_attr_sqlite);
1233 if (!db_table_exists(hapd->rad_attr_db, "radius_attributes") &&
1234 db_table_create_radius_attributes(hapd->rad_attr_db) < 0)
1235 return -1;
1236 }
1237 #endif /* CONFIG_SQLITE */
1238
1239 hapd->radius = radius_client_init(hapd, conf->radius);
1240 if (hapd->radius == NULL) {
1241 wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
1242 return -1;
1243 }
1244
1245 if (conf->radius_das_port) {
1246 struct radius_das_conf das_conf;
1247 os_memset(&das_conf, 0, sizeof(das_conf));
1248 das_conf.port = conf->radius_das_port;
1249 das_conf.shared_secret = conf->radius_das_shared_secret;
1250 das_conf.shared_secret_len =
1251 conf->radius_das_shared_secret_len;
1252 das_conf.client_addr = &conf->radius_das_client_addr;
1253 das_conf.time_window = conf->radius_das_time_window;
1254 das_conf.require_event_timestamp =
1255 conf->radius_das_require_event_timestamp;
1256 das_conf.require_message_authenticator =
1257 conf->radius_das_require_message_authenticator;
1258 das_conf.ctx = hapd;
1259 das_conf.disconnect = hostapd_das_disconnect;
1260 das_conf.coa = hostapd_das_coa;
1261 hapd->radius_das = radius_das_init(&das_conf);
1262 if (hapd->radius_das == NULL) {
1263 wpa_printf(MSG_ERROR, "RADIUS DAS initialization "
1264 "failed.");
1265 return -1;
1266 }
1267 }
1268 #endif /* CONFIG_NO_RADIUS */
1269
1270 if (hostapd_acl_init(hapd)) {
1271 wpa_printf(MSG_ERROR, "ACL initialization failed.");
1272 return -1;
1273 }
1274 if (hostapd_init_wps(hapd, conf))
1275 return -1;
1276
1277 #ifdef CONFIG_DPP
1278 hapd->gas = gas_query_ap_init(hapd, hapd->msg_ctx);
1279 if (!hapd->gas)
1280 return -1;
1281 if (hostapd_dpp_init(hapd))
1282 return -1;
1283 #endif /* CONFIG_DPP */
1284
1285 if (authsrv_init(hapd) < 0)
1286 return -1;
1287
1288 if (ieee802_1x_init(hapd)) {
1289 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
1290 return -1;
1291 }
1292
1293 if ((conf->wpa || conf->osen) && hostapd_setup_wpa(hapd))
1294 return -1;
1295
1296 if (accounting_init(hapd)) {
1297 wpa_printf(MSG_ERROR, "Accounting initialization failed.");
1298 return -1;
1299 }
1300
1301 if (conf->ieee802_11f &&
1302 (hapd->iapp = iapp_init(hapd, conf->iapp_iface)) == NULL) {
1303 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
1304 "failed.");
1305 return -1;
1306 }
1307
1308 #ifdef CONFIG_INTERWORKING
1309 if (gas_serv_init(hapd)) {
1310 wpa_printf(MSG_ERROR, "GAS server initialization failed");
1311 return -1;
1312 }
1313
1314 if (conf->qos_map_set_len &&
1315 hostapd_drv_set_qos_map(hapd, conf->qos_map_set,
1316 conf->qos_map_set_len)) {
1317 wpa_printf(MSG_ERROR, "Failed to initialize QoS Map");
1318 return -1;
1319 }
1320 #endif /* CONFIG_INTERWORKING */
1321
1322 if (conf->bss_load_update_period && bss_load_update_init(hapd)) {
1323 wpa_printf(MSG_ERROR, "BSS Load initialization failed");
1324 return -1;
1325 }
1326
1327 if (conf->proxy_arp) {
1328 if (x_snoop_init(hapd)) {
1329 wpa_printf(MSG_ERROR,
1330 "Generic snooping infrastructure initialization failed");
1331 return -1;
1332 }
1333
1334 if (dhcp_snoop_init(hapd)) {
1335 wpa_printf(MSG_ERROR,
1336 "DHCP snooping initialization failed");
1337 return -1;
1338 }
1339
1340 if (ndisc_snoop_init(hapd)) {
1341 wpa_printf(MSG_ERROR,
1342 "Neighbor Discovery snooping initialization failed");
1343 return -1;
1344 }
1345 }
1346
1347 if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
1348 wpa_printf(MSG_ERROR, "VLAN initialization failed.");
1349 return -1;
1350 }
1351
1352 if (!conf->start_disabled && ieee802_11_set_beacon(hapd) < 0)
1353 return -1;
1354
1355 if (hapd->wpa_auth && wpa_init_keys(hapd->wpa_auth) < 0)
1356 return -1;
1357
1358 if (hapd->driver && hapd->driver->set_operstate)
1359 hapd->driver->set_operstate(hapd->drv_priv, 1);
1360
1361 return 0;
1362 }
1363
1364
hostapd_tx_queue_params(struct hostapd_iface * iface)1365 static void hostapd_tx_queue_params(struct hostapd_iface *iface)
1366 {
1367 struct hostapd_data *hapd = iface->bss[0];
1368 int i;
1369 struct hostapd_tx_queue_params *p;
1370
1371 #ifdef CONFIG_MESH
1372 if ((hapd->conf->mesh & MESH_ENABLED) && iface->mconf == NULL)
1373 return;
1374 #endif /* CONFIG_MESH */
1375
1376 for (i = 0; i < NUM_TX_QUEUES; i++) {
1377 p = &iface->conf->tx_queue[i];
1378
1379 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
1380 p->cwmax, p->burst)) {
1381 wpa_printf(MSG_DEBUG, "Failed to set TX queue "
1382 "parameters for queue %d.", i);
1383 /* Continue anyway */
1384 }
1385 }
1386 }
1387
1388
hostapd_set_acl_list(struct hostapd_data * hapd,struct mac_acl_entry * mac_acl,int n_entries,u8 accept_acl)1389 static int hostapd_set_acl_list(struct hostapd_data *hapd,
1390 struct mac_acl_entry *mac_acl,
1391 int n_entries, u8 accept_acl)
1392 {
1393 struct hostapd_acl_params *acl_params;
1394 int i, err;
1395
1396 acl_params = os_zalloc(sizeof(*acl_params) +
1397 (n_entries * sizeof(acl_params->mac_acl[0])));
1398 if (!acl_params)
1399 return -ENOMEM;
1400
1401 for (i = 0; i < n_entries; i++)
1402 os_memcpy(acl_params->mac_acl[i].addr, mac_acl[i].addr,
1403 ETH_ALEN);
1404
1405 acl_params->acl_policy = accept_acl;
1406 acl_params->num_mac_acl = n_entries;
1407
1408 err = hostapd_drv_set_acl(hapd, acl_params);
1409
1410 os_free(acl_params);
1411
1412 return err;
1413 }
1414
1415
hostapd_set_acl(struct hostapd_data * hapd)1416 static void hostapd_set_acl(struct hostapd_data *hapd)
1417 {
1418 struct hostapd_config *conf = hapd->iconf;
1419 int err;
1420 u8 accept_acl;
1421
1422 if (hapd->iface->drv_max_acl_mac_addrs == 0)
1423 return;
1424
1425 if (conf->bss[0]->macaddr_acl == DENY_UNLESS_ACCEPTED) {
1426 accept_acl = 1;
1427 err = hostapd_set_acl_list(hapd, conf->bss[0]->accept_mac,
1428 conf->bss[0]->num_accept_mac,
1429 accept_acl);
1430 if (err) {
1431 wpa_printf(MSG_DEBUG, "Failed to set accept acl");
1432 return;
1433 }
1434 } else if (conf->bss[0]->macaddr_acl == ACCEPT_UNLESS_DENIED) {
1435 accept_acl = 0;
1436 err = hostapd_set_acl_list(hapd, conf->bss[0]->deny_mac,
1437 conf->bss[0]->num_deny_mac,
1438 accept_acl);
1439 if (err) {
1440 wpa_printf(MSG_DEBUG, "Failed to set deny acl");
1441 return;
1442 }
1443 }
1444 }
1445
1446
start_ctrl_iface_bss(struct hostapd_data * hapd)1447 static int start_ctrl_iface_bss(struct hostapd_data *hapd)
1448 {
1449 if (!hapd->iface->interfaces ||
1450 !hapd->iface->interfaces->ctrl_iface_init)
1451 return 0;
1452
1453 if (hapd->iface->interfaces->ctrl_iface_init(hapd)) {
1454 wpa_printf(MSG_ERROR,
1455 "Failed to setup control interface for %s",
1456 hapd->conf->iface);
1457 return -1;
1458 }
1459
1460 return 0;
1461 }
1462
1463
start_ctrl_iface(struct hostapd_iface * iface)1464 static int start_ctrl_iface(struct hostapd_iface *iface)
1465 {
1466 size_t i;
1467
1468 if (!iface->interfaces || !iface->interfaces->ctrl_iface_init)
1469 return 0;
1470
1471 for (i = 0; i < iface->num_bss; i++) {
1472 struct hostapd_data *hapd = iface->bss[i];
1473 if (iface->interfaces->ctrl_iface_init(hapd)) {
1474 wpa_printf(MSG_ERROR,
1475 "Failed to setup control interface for %s",
1476 hapd->conf->iface);
1477 return -1;
1478 }
1479 }
1480
1481 return 0;
1482 }
1483
1484
channel_list_update_timeout(void * eloop_ctx,void * timeout_ctx)1485 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx)
1486 {
1487 struct hostapd_iface *iface = eloop_ctx;
1488
1489 if (!iface->wait_channel_update) {
1490 wpa_printf(MSG_INFO, "Channel list update timeout, but interface was not waiting for it");
1491 return;
1492 }
1493
1494 /*
1495 * It is possible that the existing channel list is acceptable, so try
1496 * to proceed.
1497 */
1498 wpa_printf(MSG_DEBUG, "Channel list update timeout - try to continue anyway");
1499 setup_interface2(iface);
1500 }
1501
1502
hostapd_channel_list_updated(struct hostapd_iface * iface,int initiator)1503 void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator)
1504 {
1505 if (!iface->wait_channel_update || initiator != REGDOM_SET_BY_USER)
1506 return;
1507
1508 wpa_printf(MSG_DEBUG, "Channel list updated - continue setup");
1509 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
1510 setup_interface2(iface);
1511 }
1512
1513
setup_interface(struct hostapd_iface * iface)1514 static int setup_interface(struct hostapd_iface *iface)
1515 {
1516 struct hostapd_data *hapd = iface->bss[0];
1517 size_t i;
1518
1519 /*
1520 * It is possible that setup_interface() is called after the interface
1521 * was disabled etc., in which case driver_ap_teardown is possibly set
1522 * to 1. Clear it here so any other key/station deletion, which is not
1523 * part of a teardown flow, would also call the relevant driver
1524 * callbacks.
1525 */
1526 iface->driver_ap_teardown = 0;
1527
1528 if (!iface->phy[0]) {
1529 const char *phy = hostapd_drv_get_radio_name(hapd);
1530 if (phy) {
1531 wpa_printf(MSG_DEBUG, "phy: %s", phy);
1532 os_strlcpy(iface->phy, phy, sizeof(iface->phy));
1533 }
1534 }
1535
1536 /*
1537 * Make sure that all BSSes get configured with a pointer to the same
1538 * driver interface.
1539 */
1540 for (i = 1; i < iface->num_bss; i++) {
1541 iface->bss[i]->driver = hapd->driver;
1542 iface->bss[i]->drv_priv = hapd->drv_priv;
1543 }
1544
1545 if (hostapd_validate_bssid_configuration(iface))
1546 return -1;
1547
1548 /*
1549 * Initialize control interfaces early to allow external monitoring of
1550 * channel setup operations that may take considerable amount of time
1551 * especially for DFS cases.
1552 */
1553 if (start_ctrl_iface(iface))
1554 return -1;
1555
1556 if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1557 char country[4], previous_country[4];
1558
1559 hostapd_set_state(iface, HAPD_IFACE_COUNTRY_UPDATE);
1560 if (hostapd_get_country(hapd, previous_country) < 0)
1561 previous_country[0] = '\0';
1562
1563 os_memcpy(country, hapd->iconf->country, 3);
1564 country[3] = '\0';
1565 if (hostapd_set_country(hapd, country) < 0) {
1566 wpa_printf(MSG_ERROR, "Failed to set country code");
1567 return -1;
1568 }
1569
1570 wpa_printf(MSG_DEBUG, "Previous country code %s, new country code %s",
1571 previous_country, country);
1572
1573 if (os_strncmp(previous_country, country, 2) != 0) {
1574 wpa_printf(MSG_DEBUG, "Continue interface setup after channel list update");
1575 iface->wait_channel_update = 1;
1576 eloop_register_timeout(5, 0,
1577 channel_list_update_timeout,
1578 iface, NULL);
1579 return 0;
1580 }
1581 }
1582
1583 return setup_interface2(iface);
1584 }
1585
1586
setup_interface2(struct hostapd_iface * iface)1587 static int setup_interface2(struct hostapd_iface *iface)
1588 {
1589 iface->wait_channel_update = 0;
1590
1591 if (hostapd_get_hw_features(iface)) {
1592 /* Not all drivers support this yet, so continue without hw
1593 * feature data. */
1594 } else {
1595 int ret = hostapd_select_hw_mode(iface);
1596 if (ret < 0) {
1597 wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1598 "channel. (%d)", ret);
1599 goto fail;
1600 }
1601 if (ret == 1) {
1602 wpa_printf(MSG_DEBUG, "Interface initialization will be completed in a callback (ACS)");
1603 return 0;
1604 }
1605 ret = hostapd_check_ht_capab(iface);
1606 if (ret < 0)
1607 goto fail;
1608 if (ret == 1) {
1609 wpa_printf(MSG_DEBUG, "Interface initialization will "
1610 "be completed in a callback");
1611 return 0;
1612 }
1613
1614 if (iface->conf->ieee80211h)
1615 wpa_printf(MSG_DEBUG, "DFS support is enabled");
1616 }
1617 return hostapd_setup_interface_complete(iface, 0);
1618
1619 fail:
1620 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1621 wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1622 if (iface->interfaces && iface->interfaces->terminate_on_error)
1623 eloop_terminate();
1624 return -1;
1625 }
1626
1627
1628 #ifdef CONFIG_FST
1629
fst_hostapd_get_bssid_cb(void * ctx)1630 static const u8 * fst_hostapd_get_bssid_cb(void *ctx)
1631 {
1632 struct hostapd_data *hapd = ctx;
1633
1634 return hapd->own_addr;
1635 }
1636
1637
fst_hostapd_get_channel_info_cb(void * ctx,enum hostapd_hw_mode * hw_mode,u8 * channel)1638 static void fst_hostapd_get_channel_info_cb(void *ctx,
1639 enum hostapd_hw_mode *hw_mode,
1640 u8 *channel)
1641 {
1642 struct hostapd_data *hapd = ctx;
1643
1644 *hw_mode = ieee80211_freq_to_chan(hapd->iface->freq, channel);
1645 }
1646
1647
fst_hostapd_set_ies_cb(void * ctx,const struct wpabuf * fst_ies)1648 static void fst_hostapd_set_ies_cb(void *ctx, const struct wpabuf *fst_ies)
1649 {
1650 struct hostapd_data *hapd = ctx;
1651
1652 if (hapd->iface->fst_ies != fst_ies) {
1653 hapd->iface->fst_ies = fst_ies;
1654 if (ieee802_11_set_beacon(hapd))
1655 wpa_printf(MSG_WARNING, "FST: Cannot set beacon");
1656 }
1657 }
1658
1659
fst_hostapd_send_action_cb(void * ctx,const u8 * da,struct wpabuf * buf)1660 static int fst_hostapd_send_action_cb(void *ctx, const u8 *da,
1661 struct wpabuf *buf)
1662 {
1663 struct hostapd_data *hapd = ctx;
1664
1665 return hostapd_drv_send_action(hapd, hapd->iface->freq, 0, da,
1666 wpabuf_head(buf), wpabuf_len(buf));
1667 }
1668
1669
fst_hostapd_get_mb_ie_cb(void * ctx,const u8 * addr)1670 static const struct wpabuf * fst_hostapd_get_mb_ie_cb(void *ctx, const u8 *addr)
1671 {
1672 struct hostapd_data *hapd = ctx;
1673 struct sta_info *sta = ap_get_sta(hapd, addr);
1674
1675 return sta ? sta->mb_ies : NULL;
1676 }
1677
1678
fst_hostapd_update_mb_ie_cb(void * ctx,const u8 * addr,const u8 * buf,size_t size)1679 static void fst_hostapd_update_mb_ie_cb(void *ctx, const u8 *addr,
1680 const u8 *buf, size_t size)
1681 {
1682 struct hostapd_data *hapd = ctx;
1683 struct sta_info *sta = ap_get_sta(hapd, addr);
1684
1685 if (sta) {
1686 struct mb_ies_info info;
1687
1688 if (!mb_ies_info_by_ies(&info, buf, size)) {
1689 wpabuf_free(sta->mb_ies);
1690 sta->mb_ies = mb_ies_by_info(&info);
1691 }
1692 }
1693 }
1694
1695
fst_hostapd_get_sta(struct fst_get_peer_ctx ** get_ctx,Boolean mb_only)1696 static const u8 * fst_hostapd_get_sta(struct fst_get_peer_ctx **get_ctx,
1697 Boolean mb_only)
1698 {
1699 struct sta_info *s = (struct sta_info *) *get_ctx;
1700
1701 if (mb_only) {
1702 for (; s && !s->mb_ies; s = s->next)
1703 ;
1704 }
1705
1706 if (s) {
1707 *get_ctx = (struct fst_get_peer_ctx *) s->next;
1708
1709 return s->addr;
1710 }
1711
1712 *get_ctx = NULL;
1713 return NULL;
1714 }
1715
1716
fst_hostapd_get_peer_first(void * ctx,struct fst_get_peer_ctx ** get_ctx,Boolean mb_only)1717 static const u8 * fst_hostapd_get_peer_first(void *ctx,
1718 struct fst_get_peer_ctx **get_ctx,
1719 Boolean mb_only)
1720 {
1721 struct hostapd_data *hapd = ctx;
1722
1723 *get_ctx = (struct fst_get_peer_ctx *) hapd->sta_list;
1724
1725 return fst_hostapd_get_sta(get_ctx, mb_only);
1726 }
1727
1728
fst_hostapd_get_peer_next(void * ctx,struct fst_get_peer_ctx ** get_ctx,Boolean mb_only)1729 static const u8 * fst_hostapd_get_peer_next(void *ctx,
1730 struct fst_get_peer_ctx **get_ctx,
1731 Boolean mb_only)
1732 {
1733 return fst_hostapd_get_sta(get_ctx, mb_only);
1734 }
1735
1736
fst_hostapd_fill_iface_obj(struct hostapd_data * hapd,struct fst_wpa_obj * iface_obj)1737 void fst_hostapd_fill_iface_obj(struct hostapd_data *hapd,
1738 struct fst_wpa_obj *iface_obj)
1739 {
1740 iface_obj->ctx = hapd;
1741 iface_obj->get_bssid = fst_hostapd_get_bssid_cb;
1742 iface_obj->get_channel_info = fst_hostapd_get_channel_info_cb;
1743 iface_obj->set_ies = fst_hostapd_set_ies_cb;
1744 iface_obj->send_action = fst_hostapd_send_action_cb;
1745 iface_obj->get_mb_ie = fst_hostapd_get_mb_ie_cb;
1746 iface_obj->update_mb_ie = fst_hostapd_update_mb_ie_cb;
1747 iface_obj->get_peer_first = fst_hostapd_get_peer_first;
1748 iface_obj->get_peer_next = fst_hostapd_get_peer_next;
1749 }
1750
1751 #endif /* CONFIG_FST */
1752
1753 #ifdef CONFIG_OWE
1754
hostapd_owe_iface_iter(struct hostapd_iface * iface,void * ctx)1755 static int hostapd_owe_iface_iter(struct hostapd_iface *iface, void *ctx)
1756 {
1757 struct hostapd_data *hapd = ctx;
1758 size_t i;
1759
1760 for (i = 0; i < iface->num_bss; i++) {
1761 struct hostapd_data *bss = iface->bss[i];
1762
1763 if (os_strcmp(hapd->conf->owe_transition_ifname,
1764 bss->conf->iface) != 0)
1765 continue;
1766
1767 wpa_printf(MSG_DEBUG,
1768 "OWE: ifname=%s found transition mode ifname=%s BSSID "
1769 MACSTR " SSID %s",
1770 hapd->conf->iface, bss->conf->iface,
1771 MAC2STR(bss->own_addr),
1772 wpa_ssid_txt(bss->conf->ssid.ssid,
1773 bss->conf->ssid.ssid_len));
1774 if (!bss->conf->ssid.ssid_set || !bss->conf->ssid.ssid_len ||
1775 is_zero_ether_addr(bss->own_addr))
1776 continue;
1777
1778 os_memcpy(hapd->conf->owe_transition_bssid, bss->own_addr,
1779 ETH_ALEN);
1780 os_memcpy(hapd->conf->owe_transition_ssid,
1781 bss->conf->ssid.ssid, bss->conf->ssid.ssid_len);
1782 hapd->conf->owe_transition_ssid_len = bss->conf->ssid.ssid_len;
1783 wpa_printf(MSG_DEBUG,
1784 "OWE: Copied transition mode information");
1785 return 1;
1786 }
1787
1788 return 0;
1789 }
1790
1791
hostapd_owe_trans_get_info(struct hostapd_data * hapd)1792 int hostapd_owe_trans_get_info(struct hostapd_data *hapd)
1793 {
1794 if (hapd->conf->owe_transition_ssid_len > 0 &&
1795 !is_zero_ether_addr(hapd->conf->owe_transition_bssid))
1796 return 0;
1797
1798 /* Find transition mode SSID/BSSID information from a BSS operated by
1799 * this hostapd instance. */
1800 if (!hapd->iface->interfaces ||
1801 !hapd->iface->interfaces->for_each_interface)
1802 return hostapd_owe_iface_iter(hapd->iface, hapd);
1803 else
1804 return hapd->iface->interfaces->for_each_interface(
1805 hapd->iface->interfaces, hostapd_owe_iface_iter, hapd);
1806 }
1807
1808
hostapd_owe_iface_iter2(struct hostapd_iface * iface,void * ctx)1809 static int hostapd_owe_iface_iter2(struct hostapd_iface *iface, void *ctx)
1810 {
1811 size_t i;
1812
1813 for (i = 0; i < iface->num_bss; i++) {
1814 struct hostapd_data *bss = iface->bss[i];
1815 int res;
1816
1817 if (!bss->conf->owe_transition_ifname[0])
1818 continue;
1819 res = hostapd_owe_trans_get_info(bss);
1820 if (res == 0)
1821 continue;
1822 wpa_printf(MSG_DEBUG,
1823 "OWE: Matching transition mode interface enabled - update beacon data for %s",
1824 bss->conf->iface);
1825 ieee802_11_set_beacon(bss);
1826 }
1827
1828 return 0;
1829 }
1830
1831 #endif /* CONFIG_OWE */
1832
1833
hostapd_owe_update_trans(struct hostapd_iface * iface)1834 static void hostapd_owe_update_trans(struct hostapd_iface *iface)
1835 {
1836 #ifdef CONFIG_OWE
1837 /* Check whether the enabled BSS can complete OWE transition mode
1838 * configuration for any pending interface. */
1839 if (!iface->interfaces ||
1840 !iface->interfaces->for_each_interface)
1841 hostapd_owe_iface_iter2(iface, NULL);
1842 else
1843 iface->interfaces->for_each_interface(
1844 iface->interfaces, hostapd_owe_iface_iter2, NULL);
1845 #endif /* CONFIG_OWE */
1846 }
1847
1848
hostapd_interface_setup_failure_handler(void * eloop_ctx,void * timeout_ctx)1849 static void hostapd_interface_setup_failure_handler(void *eloop_ctx,
1850 void *timeout_ctx)
1851 {
1852 struct hostapd_iface *iface = eloop_ctx;
1853 struct hostapd_data *hapd;
1854
1855 if (iface->num_bss < 1 || !iface->bss || !iface->bss[0])
1856 return;
1857 hapd = iface->bss[0];
1858 if (hapd->setup_complete_cb)
1859 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
1860 }
1861
1862
hostapd_setup_interface_complete_sync(struct hostapd_iface * iface,int err)1863 static int hostapd_setup_interface_complete_sync(struct hostapd_iface *iface,
1864 int err)
1865 {
1866 struct hostapd_data *hapd = iface->bss[0];
1867 size_t j;
1868 u8 *prev_addr;
1869 int delay_apply_cfg = 0;
1870 int res_dfs_offload = 0;
1871
1872 if (err)
1873 goto fail;
1874
1875 wpa_printf(MSG_DEBUG, "Completing interface initialization");
1876 if (iface->conf->channel) {
1877 #ifdef NEED_AP_MLME
1878 int res;
1879 #endif /* NEED_AP_MLME */
1880
1881 iface->freq = hostapd_hw_get_freq(hapd, iface->conf->channel);
1882 wpa_printf(MSG_DEBUG, "Mode: %s Channel: %d "
1883 "Frequency: %d MHz",
1884 hostapd_hw_mode_txt(iface->conf->hw_mode),
1885 iface->conf->channel, iface->freq);
1886
1887 #ifdef NEED_AP_MLME
1888 /* Handle DFS only if it is not offloaded to the driver */
1889 if (!(iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)) {
1890 /* Check DFS */
1891 res = hostapd_handle_dfs(iface);
1892 if (res <= 0) {
1893 if (res < 0)
1894 goto fail;
1895 return res;
1896 }
1897 } else {
1898 /* If DFS is offloaded to the driver */
1899 res_dfs_offload = hostapd_handle_dfs_offload(iface);
1900 if (res_dfs_offload <= 0) {
1901 if (res_dfs_offload < 0)
1902 goto fail;
1903 } else {
1904 wpa_printf(MSG_DEBUG,
1905 "Proceed with AP/channel setup");
1906 /*
1907 * If this is a DFS channel, move to completing
1908 * AP setup.
1909 */
1910 if (res_dfs_offload == 1)
1911 goto dfs_offload;
1912 /* Otherwise fall through. */
1913 }
1914 }
1915 #endif /* NEED_AP_MLME */
1916
1917 #ifdef CONFIG_MESH
1918 if (iface->mconf != NULL) {
1919 wpa_printf(MSG_DEBUG,
1920 "%s: Mesh configuration will be applied while joining the mesh network",
1921 iface->bss[0]->conf->iface);
1922 delay_apply_cfg = 1;
1923 }
1924 #endif /* CONFIG_MESH */
1925
1926 if (!delay_apply_cfg &&
1927 hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq,
1928 hapd->iconf->channel,
1929 hapd->iconf->ieee80211n,
1930 hapd->iconf->ieee80211ac,
1931 hapd->iconf->ieee80211ax,
1932 hapd->iconf->secondary_channel,
1933 hostapd_get_oper_chwidth(hapd->iconf),
1934 hostapd_get_oper_centr_freq_seg0_idx(
1935 hapd->iconf),
1936 hostapd_get_oper_centr_freq_seg1_idx(
1937 hapd->iconf))) {
1938 wpa_printf(MSG_ERROR, "Could not set channel for "
1939 "kernel driver");
1940 goto fail;
1941 }
1942 }
1943
1944 if (iface->current_mode) {
1945 if (hostapd_prepare_rates(iface, iface->current_mode)) {
1946 wpa_printf(MSG_ERROR, "Failed to prepare rates "
1947 "table.");
1948 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1949 HOSTAPD_LEVEL_WARNING,
1950 "Failed to prepare rates table.");
1951 goto fail;
1952 }
1953 }
1954
1955 if (hapd->iconf->rts_threshold >= -1 &&
1956 hostapd_set_rts(hapd, hapd->iconf->rts_threshold) &&
1957 hapd->iconf->rts_threshold >= -1) {
1958 wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
1959 "kernel driver");
1960 goto fail;
1961 }
1962
1963 if (hapd->iconf->fragm_threshold >= -1 &&
1964 hostapd_set_frag(hapd, hapd->iconf->fragm_threshold) &&
1965 hapd->iconf->fragm_threshold != -1) {
1966 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
1967 "for kernel driver");
1968 goto fail;
1969 }
1970
1971 prev_addr = hapd->own_addr;
1972
1973 for (j = 0; j < iface->num_bss; j++) {
1974 hapd = iface->bss[j];
1975 if (j)
1976 os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
1977 if (hostapd_setup_bss(hapd, j == 0)) {
1978 for (;;) {
1979 hapd = iface->bss[j];
1980 hostapd_bss_deinit_no_free(hapd);
1981 hostapd_free_hapd_data(hapd);
1982 if (j == 0)
1983 break;
1984 j--;
1985 }
1986 goto fail;
1987 }
1988 if (is_zero_ether_addr(hapd->conf->bssid))
1989 prev_addr = hapd->own_addr;
1990 }
1991 hapd = iface->bss[0];
1992
1993 hostapd_tx_queue_params(iface);
1994
1995 ap_list_init(iface);
1996
1997 hostapd_set_acl(hapd);
1998
1999 if (hostapd_driver_commit(hapd) < 0) {
2000 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
2001 "configuration", __func__);
2002 goto fail;
2003 }
2004
2005 /*
2006 * WPS UPnP module can be initialized only when the "upnp_iface" is up.
2007 * If "interface" and "upnp_iface" are the same (e.g., non-bridge
2008 * mode), the interface is up only after driver_commit, so initialize
2009 * WPS after driver_commit.
2010 */
2011 for (j = 0; j < iface->num_bss; j++) {
2012 if (hostapd_init_wps_complete(iface->bss[j]))
2013 goto fail;
2014 }
2015
2016 if ((iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
2017 !res_dfs_offload) {
2018 /*
2019 * If freq is DFS, and DFS is offloaded to the driver, then wait
2020 * for CAC to complete.
2021 */
2022 wpa_printf(MSG_DEBUG, "%s: Wait for CAC to complete", __func__);
2023 return res_dfs_offload;
2024 }
2025
2026 #ifdef NEED_AP_MLME
2027 dfs_offload:
2028 #endif /* NEED_AP_MLME */
2029
2030 #ifdef CONFIG_FST
2031 if (hapd->iconf->fst_cfg.group_id[0]) {
2032 struct fst_wpa_obj iface_obj;
2033
2034 fst_hostapd_fill_iface_obj(hapd, &iface_obj);
2035 iface->fst = fst_attach(hapd->conf->iface, hapd->own_addr,
2036 &iface_obj, &hapd->iconf->fst_cfg);
2037 if (!iface->fst) {
2038 wpa_printf(MSG_ERROR, "Could not attach to FST %s",
2039 hapd->iconf->fst_cfg.group_id);
2040 goto fail;
2041 }
2042 }
2043 #endif /* CONFIG_FST */
2044
2045 hostapd_set_state(iface, HAPD_IFACE_ENABLED);
2046 hostapd_owe_update_trans(iface);
2047 airtime_policy_update_init(iface);
2048 wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_ENABLED);
2049 if (hapd->setup_complete_cb)
2050 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
2051
2052 wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
2053 iface->bss[0]->conf->iface);
2054 if (iface->interfaces && iface->interfaces->terminate_on_error > 0)
2055 iface->interfaces->terminate_on_error--;
2056
2057 for (j = 0; j < iface->num_bss; j++)
2058 hostapd_neighbor_set_own_report(iface->bss[j]);
2059
2060 return 0;
2061
2062 fail:
2063 wpa_printf(MSG_ERROR, "Interface initialization failed");
2064 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
2065 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2066 #ifdef CONFIG_FST
2067 if (iface->fst) {
2068 fst_detach(iface->fst);
2069 iface->fst = NULL;
2070 }
2071 #endif /* CONFIG_FST */
2072
2073 if (iface->interfaces && iface->interfaces->terminate_on_error) {
2074 eloop_terminate();
2075 } else if (hapd->setup_complete_cb) {
2076 /*
2077 * Calling hapd->setup_complete_cb directly may cause iface
2078 * deinitialization which may be accessed later by the caller.
2079 */
2080 eloop_register_timeout(0, 0,
2081 hostapd_interface_setup_failure_handler,
2082 iface, NULL);
2083 }
2084
2085 return -1;
2086 }
2087
2088
2089 /**
2090 * hostapd_setup_interface_complete - Complete interface setup
2091 *
2092 * This function is called when previous steps in the interface setup has been
2093 * completed. This can also start operations, e.g., DFS, that will require
2094 * additional processing before interface is ready to be enabled. Such
2095 * operations will call this function from eloop callbacks when finished.
2096 */
hostapd_setup_interface_complete(struct hostapd_iface * iface,int err)2097 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err)
2098 {
2099 struct hapd_interfaces *interfaces = iface->interfaces;
2100 struct hostapd_data *hapd = iface->bss[0];
2101 unsigned int i;
2102 int not_ready_in_sync_ifaces = 0;
2103
2104 if (!iface->need_to_start_in_sync)
2105 return hostapd_setup_interface_complete_sync(iface, err);
2106
2107 if (err) {
2108 wpa_printf(MSG_ERROR, "Interface initialization failed");
2109 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
2110 iface->need_to_start_in_sync = 0;
2111 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2112 if (interfaces && interfaces->terminate_on_error)
2113 eloop_terminate();
2114 return -1;
2115 }
2116
2117 if (iface->ready_to_start_in_sync) {
2118 /* Already in ready and waiting. should never happpen */
2119 return 0;
2120 }
2121
2122 for (i = 0; i < interfaces->count; i++) {
2123 if (interfaces->iface[i]->need_to_start_in_sync &&
2124 !interfaces->iface[i]->ready_to_start_in_sync)
2125 not_ready_in_sync_ifaces++;
2126 }
2127
2128 /*
2129 * Check if this is the last interface, if yes then start all the other
2130 * waiting interfaces. If not, add this interface to the waiting list.
2131 */
2132 if (not_ready_in_sync_ifaces > 1 && iface->state == HAPD_IFACE_DFS) {
2133 /*
2134 * If this interface went through CAC, do not synchronize, just
2135 * start immediately.
2136 */
2137 iface->need_to_start_in_sync = 0;
2138 wpa_printf(MSG_INFO,
2139 "%s: Finished CAC - bypass sync and start interface",
2140 iface->bss[0]->conf->iface);
2141 return hostapd_setup_interface_complete_sync(iface, err);
2142 }
2143
2144 if (not_ready_in_sync_ifaces > 1) {
2145 /* need to wait as there are other interfaces still coming up */
2146 iface->ready_to_start_in_sync = 1;
2147 wpa_printf(MSG_INFO,
2148 "%s: Interface waiting to sync with other interfaces",
2149 iface->bss[0]->conf->iface);
2150 return 0;
2151 }
2152
2153 wpa_printf(MSG_INFO,
2154 "%s: Last interface to sync - starting all interfaces",
2155 iface->bss[0]->conf->iface);
2156 iface->need_to_start_in_sync = 0;
2157 hostapd_setup_interface_complete_sync(iface, err);
2158 for (i = 0; i < interfaces->count; i++) {
2159 if (interfaces->iface[i]->need_to_start_in_sync &&
2160 interfaces->iface[i]->ready_to_start_in_sync) {
2161 hostapd_setup_interface_complete_sync(
2162 interfaces->iface[i], 0);
2163 /* Only once the interfaces are sync started */
2164 interfaces->iface[i]->need_to_start_in_sync = 0;
2165 }
2166 }
2167
2168 return 0;
2169 }
2170
2171
2172 /**
2173 * hostapd_setup_interface - Setup of an interface
2174 * @iface: Pointer to interface data.
2175 * Returns: 0 on success, -1 on failure
2176 *
2177 * Initializes the driver interface, validates the configuration,
2178 * and sets driver parameters based on the configuration.
2179 * Flushes old stations, sets the channel, encryption,
2180 * beacons, and WDS links based on the configuration.
2181 *
2182 * If interface setup requires more time, e.g., to perform HT co-ex scans, ACS,
2183 * or DFS operations, this function returns 0 before such operations have been
2184 * completed. The pending operations are registered into eloop and will be
2185 * completed from eloop callbacks. Those callbacks end up calling
2186 * hostapd_setup_interface_complete() once setup has been completed.
2187 */
hostapd_setup_interface(struct hostapd_iface * iface)2188 int hostapd_setup_interface(struct hostapd_iface *iface)
2189 {
2190 int ret;
2191
2192 ret = setup_interface(iface);
2193 if (ret) {
2194 wpa_printf(MSG_ERROR, "%s: Unable to setup interface.",
2195 iface->bss[0]->conf->iface);
2196 return -1;
2197 }
2198
2199 return 0;
2200 }
2201
2202
2203 /**
2204 * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
2205 * @hapd_iface: Pointer to interface data
2206 * @conf: Pointer to per-interface configuration
2207 * @bss: Pointer to per-BSS configuration for this BSS
2208 * Returns: Pointer to allocated BSS data
2209 *
2210 * This function is used to allocate per-BSS data structure. This data will be
2211 * freed after hostapd_cleanup() is called for it during interface
2212 * deinitialization.
2213 */
2214 struct hostapd_data *
hostapd_alloc_bss_data(struct hostapd_iface * hapd_iface,struct hostapd_config * conf,struct hostapd_bss_config * bss)2215 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
2216 struct hostapd_config *conf,
2217 struct hostapd_bss_config *bss)
2218 {
2219 struct hostapd_data *hapd;
2220
2221 hapd = os_zalloc(sizeof(*hapd));
2222 if (hapd == NULL)
2223 return NULL;
2224
2225 hapd->new_assoc_sta_cb = hostapd_new_assoc_sta;
2226 hapd->iconf = conf;
2227 hapd->conf = bss;
2228 hapd->iface = hapd_iface;
2229 if (conf)
2230 hapd->driver = conf->driver;
2231 hapd->ctrl_sock = -1;
2232 dl_list_init(&hapd->ctrl_dst);
2233 dl_list_init(&hapd->nr_db);
2234 hapd->dhcp_sock = -1;
2235 #ifdef CONFIG_IEEE80211R_AP
2236 dl_list_init(&hapd->l2_queue);
2237 dl_list_init(&hapd->l2_oui_queue);
2238 #endif /* CONFIG_IEEE80211R_AP */
2239 #ifdef CONFIG_SAE
2240 dl_list_init(&hapd->sae_commit_queue);
2241 #endif /* CONFIG_SAE */
2242
2243 return hapd;
2244 }
2245
2246
hostapd_bss_deinit(struct hostapd_data * hapd)2247 static void hostapd_bss_deinit(struct hostapd_data *hapd)
2248 {
2249 if (!hapd)
2250 return;
2251 wpa_printf(MSG_DEBUG, "%s: deinit bss %s", __func__,
2252 hapd->conf ? hapd->conf->iface : "N/A");
2253 hostapd_bss_deinit_no_free(hapd);
2254 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2255 #ifdef CONFIG_SQLITE
2256 if (hapd->rad_attr_db) {
2257 sqlite3_close(hapd->rad_attr_db);
2258 hapd->rad_attr_db = NULL;
2259 }
2260 #endif /* CONFIG_SQLITE */
2261 hostapd_cleanup(hapd);
2262 }
2263
2264
hostapd_interface_deinit(struct hostapd_iface * iface)2265 void hostapd_interface_deinit(struct hostapd_iface *iface)
2266 {
2267 int j;
2268
2269 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
2270 if (iface == NULL)
2271 return;
2272
2273 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
2274
2275 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
2276 iface->wait_channel_update = 0;
2277
2278 #ifdef CONFIG_FST
2279 if (iface->fst) {
2280 fst_detach(iface->fst);
2281 iface->fst = NULL;
2282 }
2283 #endif /* CONFIG_FST */
2284
2285 for (j = (int) iface->num_bss - 1; j >= 0; j--) {
2286 if (!iface->bss)
2287 break;
2288 hostapd_bss_deinit(iface->bss[j]);
2289 }
2290
2291 #ifdef CONFIG_IEEE80211N
2292 #ifdef NEED_AP_MLME
2293 hostapd_stop_setup_timers(iface);
2294 eloop_cancel_timeout(ap_ht2040_timeout, iface, NULL);
2295 #endif /* NEED_AP_MLME */
2296 #endif /* CONFIG_IEEE80211N */
2297 }
2298
2299
hostapd_interface_free(struct hostapd_iface * iface)2300 void hostapd_interface_free(struct hostapd_iface *iface)
2301 {
2302 size_t j;
2303 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
2304 for (j = 0; j < iface->num_bss; j++) {
2305 if (!iface->bss)
2306 break;
2307 wpa_printf(MSG_DEBUG, "%s: free hapd %p",
2308 __func__, iface->bss[j]);
2309 os_free(iface->bss[j]);
2310 }
2311 hostapd_cleanup_iface(iface);
2312 }
2313
2314
hostapd_alloc_iface(void)2315 struct hostapd_iface * hostapd_alloc_iface(void)
2316 {
2317 struct hostapd_iface *hapd_iface;
2318
2319 hapd_iface = os_zalloc(sizeof(*hapd_iface));
2320 if (!hapd_iface)
2321 return NULL;
2322
2323 dl_list_init(&hapd_iface->sta_seen);
2324
2325 return hapd_iface;
2326 }
2327
2328
2329 /**
2330 * hostapd_init - Allocate and initialize per-interface data
2331 * @config_file: Path to the configuration file
2332 * Returns: Pointer to the allocated interface data or %NULL on failure
2333 *
2334 * This function is used to allocate main data structures for per-interface
2335 * data. The allocated data buffer will be freed by calling
2336 * hostapd_cleanup_iface().
2337 */
hostapd_init(struct hapd_interfaces * interfaces,const char * config_file)2338 struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces,
2339 const char *config_file)
2340 {
2341 struct hostapd_iface *hapd_iface = NULL;
2342 struct hostapd_config *conf = NULL;
2343 struct hostapd_data *hapd;
2344 size_t i;
2345
2346 hapd_iface = hostapd_alloc_iface();
2347 if (hapd_iface == NULL)
2348 goto fail;
2349
2350 hapd_iface->config_fname = os_strdup(config_file);
2351 if (hapd_iface->config_fname == NULL)
2352 goto fail;
2353
2354 conf = interfaces->config_read_cb(hapd_iface->config_fname);
2355 if (conf == NULL)
2356 goto fail;
2357 hapd_iface->conf = conf;
2358
2359 hapd_iface->num_bss = conf->num_bss;
2360 hapd_iface->bss = os_calloc(conf->num_bss,
2361 sizeof(struct hostapd_data *));
2362 if (hapd_iface->bss == NULL)
2363 goto fail;
2364
2365 for (i = 0; i < conf->num_bss; i++) {
2366 hapd = hapd_iface->bss[i] =
2367 hostapd_alloc_bss_data(hapd_iface, conf,
2368 conf->bss[i]);
2369 if (hapd == NULL)
2370 goto fail;
2371 hapd->msg_ctx = hapd;
2372 }
2373
2374 return hapd_iface;
2375
2376 fail:
2377 wpa_printf(MSG_ERROR, "Failed to set up interface with %s",
2378 config_file);
2379 if (conf)
2380 hostapd_config_free(conf);
2381 if (hapd_iface) {
2382 os_free(hapd_iface->config_fname);
2383 os_free(hapd_iface->bss);
2384 wpa_printf(MSG_DEBUG, "%s: free iface %p",
2385 __func__, hapd_iface);
2386 os_free(hapd_iface);
2387 }
2388 return NULL;
2389 }
2390
2391
ifname_in_use(struct hapd_interfaces * interfaces,const char * ifname)2392 static int ifname_in_use(struct hapd_interfaces *interfaces, const char *ifname)
2393 {
2394 size_t i, j;
2395
2396 for (i = 0; i < interfaces->count; i++) {
2397 struct hostapd_iface *iface = interfaces->iface[i];
2398 for (j = 0; j < iface->num_bss; j++) {
2399 struct hostapd_data *hapd = iface->bss[j];
2400 if (os_strcmp(ifname, hapd->conf->iface) == 0)
2401 return 1;
2402 }
2403 }
2404
2405 return 0;
2406 }
2407
2408
2409 /**
2410 * hostapd_interface_init_bss - Read configuration file and init BSS data
2411 *
2412 * This function is used to parse configuration file for a BSS. This BSS is
2413 * added to an existing interface sharing the same radio (if any) or a new
2414 * interface is created if this is the first interface on a radio. This
2415 * allocate memory for the BSS. No actual driver operations are started.
2416 *
2417 * This is similar to hostapd_interface_init(), but for a case where the
2418 * configuration is used to add a single BSS instead of all BSSes for a radio.
2419 */
2420 struct hostapd_iface *
hostapd_interface_init_bss(struct hapd_interfaces * interfaces,const char * phy,const char * config_fname,int debug)2421 hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy,
2422 const char *config_fname, int debug)
2423 {
2424 struct hostapd_iface *new_iface = NULL, *iface = NULL;
2425 struct hostapd_data *hapd;
2426 int k;
2427 size_t i, bss_idx;
2428
2429 if (!phy || !*phy)
2430 return NULL;
2431
2432 for (i = 0; i < interfaces->count; i++) {
2433 if (os_strcmp(interfaces->iface[i]->phy, phy) == 0) {
2434 iface = interfaces->iface[i];
2435 break;
2436 }
2437 }
2438
2439 wpa_printf(MSG_INFO, "Configuration file: %s (phy %s)%s",
2440 config_fname, phy, iface ? "" : " --> new PHY");
2441 if (iface) {
2442 struct hostapd_config *conf;
2443 struct hostapd_bss_config **tmp_conf;
2444 struct hostapd_data **tmp_bss;
2445 struct hostapd_bss_config *bss;
2446 const char *ifname;
2447
2448 /* Add new BSS to existing iface */
2449 conf = interfaces->config_read_cb(config_fname);
2450 if (conf == NULL)
2451 return NULL;
2452 if (conf->num_bss > 1) {
2453 wpa_printf(MSG_ERROR, "Multiple BSSes specified in BSS-config");
2454 hostapd_config_free(conf);
2455 return NULL;
2456 }
2457
2458 ifname = conf->bss[0]->iface;
2459 if (ifname[0] != '\0' && ifname_in_use(interfaces, ifname)) {
2460 wpa_printf(MSG_ERROR,
2461 "Interface name %s already in use", ifname);
2462 hostapd_config_free(conf);
2463 return NULL;
2464 }
2465
2466 tmp_conf = os_realloc_array(
2467 iface->conf->bss, iface->conf->num_bss + 1,
2468 sizeof(struct hostapd_bss_config *));
2469 tmp_bss = os_realloc_array(iface->bss, iface->num_bss + 1,
2470 sizeof(struct hostapd_data *));
2471 if (tmp_bss)
2472 iface->bss = tmp_bss;
2473 if (tmp_conf) {
2474 iface->conf->bss = tmp_conf;
2475 iface->conf->last_bss = tmp_conf[0];
2476 }
2477 if (tmp_bss == NULL || tmp_conf == NULL) {
2478 hostapd_config_free(conf);
2479 return NULL;
2480 }
2481 bss = iface->conf->bss[iface->conf->num_bss] = conf->bss[0];
2482 iface->conf->num_bss++;
2483
2484 hapd = hostapd_alloc_bss_data(iface, iface->conf, bss);
2485 if (hapd == NULL) {
2486 iface->conf->num_bss--;
2487 hostapd_config_free(conf);
2488 return NULL;
2489 }
2490 iface->conf->last_bss = bss;
2491 iface->bss[iface->num_bss] = hapd;
2492 hapd->msg_ctx = hapd;
2493
2494 bss_idx = iface->num_bss++;
2495 conf->num_bss--;
2496 conf->bss[0] = NULL;
2497 hostapd_config_free(conf);
2498 } else {
2499 /* Add a new iface with the first BSS */
2500 new_iface = iface = hostapd_init(interfaces, config_fname);
2501 if (!iface)
2502 return NULL;
2503 os_strlcpy(iface->phy, phy, sizeof(iface->phy));
2504 iface->interfaces = interfaces;
2505 bss_idx = 0;
2506 }
2507
2508 for (k = 0; k < debug; k++) {
2509 if (iface->bss[bss_idx]->conf->logger_stdout_level > 0)
2510 iface->bss[bss_idx]->conf->logger_stdout_level--;
2511 }
2512
2513 if (iface->conf->bss[bss_idx]->iface[0] == '\0' &&
2514 !hostapd_drv_none(iface->bss[bss_idx])) {
2515 wpa_printf(MSG_ERROR, "Interface name not specified in %s",
2516 config_fname);
2517 if (new_iface)
2518 hostapd_interface_deinit_free(new_iface);
2519 return NULL;
2520 }
2521
2522 return iface;
2523 }
2524
2525
hostapd_interface_deinit_free(struct hostapd_iface * iface)2526 void hostapd_interface_deinit_free(struct hostapd_iface *iface)
2527 {
2528 const struct wpa_driver_ops *driver;
2529 void *drv_priv;
2530
2531 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
2532 if (iface == NULL)
2533 return;
2534 wpa_printf(MSG_DEBUG, "%s: num_bss=%u conf->num_bss=%u",
2535 __func__, (unsigned int) iface->num_bss,
2536 (unsigned int) iface->conf->num_bss);
2537 driver = iface->bss[0]->driver;
2538 drv_priv = iface->bss[0]->drv_priv;
2539 hostapd_interface_deinit(iface);
2540 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
2541 __func__, driver, drv_priv);
2542 if (driver && driver->hapd_deinit && drv_priv) {
2543 driver->hapd_deinit(drv_priv);
2544 iface->bss[0]->drv_priv = NULL;
2545 }
2546 hostapd_interface_free(iface);
2547 }
2548
2549
hostapd_deinit_driver(const struct wpa_driver_ops * driver,void * drv_priv,struct hostapd_iface * hapd_iface)2550 static void hostapd_deinit_driver(const struct wpa_driver_ops *driver,
2551 void *drv_priv,
2552 struct hostapd_iface *hapd_iface)
2553 {
2554 size_t j;
2555
2556 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
2557 __func__, driver, drv_priv);
2558 if (driver && driver->hapd_deinit && drv_priv) {
2559 driver->hapd_deinit(drv_priv);
2560 for (j = 0; j < hapd_iface->num_bss; j++) {
2561 wpa_printf(MSG_DEBUG, "%s:bss[%d]->drv_priv=%p",
2562 __func__, (int) j,
2563 hapd_iface->bss[j]->drv_priv);
2564 if (hapd_iface->bss[j]->drv_priv == drv_priv) {
2565 hapd_iface->bss[j]->drv_priv = NULL;
2566 hapd_iface->extended_capa = NULL;
2567 hapd_iface->extended_capa_mask = NULL;
2568 hapd_iface->extended_capa_len = 0;
2569 }
2570 }
2571 }
2572 }
2573
2574
hostapd_enable_iface(struct hostapd_iface * hapd_iface)2575 int hostapd_enable_iface(struct hostapd_iface *hapd_iface)
2576 {
2577 size_t j;
2578
2579 if (hapd_iface->bss[0]->drv_priv != NULL) {
2580 wpa_printf(MSG_ERROR, "Interface %s already enabled",
2581 hapd_iface->conf->bss[0]->iface);
2582 return -1;
2583 }
2584
2585 wpa_printf(MSG_DEBUG, "Enable interface %s",
2586 hapd_iface->conf->bss[0]->iface);
2587
2588 for (j = 0; j < hapd_iface->num_bss; j++)
2589 hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
2590 if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
2591 wpa_printf(MSG_INFO, "Invalid configuration - cannot enable");
2592 return -1;
2593 }
2594
2595 if (hapd_iface->interfaces == NULL ||
2596 hapd_iface->interfaces->driver_init == NULL ||
2597 hapd_iface->interfaces->driver_init(hapd_iface))
2598 return -1;
2599
2600 if (hostapd_setup_interface(hapd_iface)) {
2601 hostapd_deinit_driver(hapd_iface->bss[0]->driver,
2602 hapd_iface->bss[0]->drv_priv,
2603 hapd_iface);
2604 return -1;
2605 }
2606
2607 return 0;
2608 }
2609
2610
hostapd_reload_iface(struct hostapd_iface * hapd_iface)2611 int hostapd_reload_iface(struct hostapd_iface *hapd_iface)
2612 {
2613 size_t j;
2614
2615 wpa_printf(MSG_DEBUG, "Reload interface %s",
2616 hapd_iface->conf->bss[0]->iface);
2617 for (j = 0; j < hapd_iface->num_bss; j++)
2618 hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
2619 if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
2620 wpa_printf(MSG_ERROR, "Updated configuration is invalid");
2621 return -1;
2622 }
2623 hostapd_clear_old(hapd_iface);
2624 for (j = 0; j < hapd_iface->num_bss; j++)
2625 hostapd_reload_bss(hapd_iface->bss[j]);
2626
2627 return 0;
2628 }
2629
2630
hostapd_disable_iface(struct hostapd_iface * hapd_iface)2631 int hostapd_disable_iface(struct hostapd_iface *hapd_iface)
2632 {
2633 size_t j;
2634 const struct wpa_driver_ops *driver;
2635 void *drv_priv;
2636
2637 if (hapd_iface == NULL)
2638 return -1;
2639
2640 if (hapd_iface->bss[0]->drv_priv == NULL) {
2641 wpa_printf(MSG_INFO, "Interface %s already disabled",
2642 hapd_iface->conf->bss[0]->iface);
2643 return -1;
2644 }
2645
2646 wpa_msg(hapd_iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2647 driver = hapd_iface->bss[0]->driver;
2648 drv_priv = hapd_iface->bss[0]->drv_priv;
2649
2650 hapd_iface->driver_ap_teardown =
2651 !!(hapd_iface->drv_flags &
2652 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2653
2654 #ifdef NEED_AP_MLME
2655 for (j = 0; j < hapd_iface->num_bss; j++)
2656 hostapd_cleanup_cs_params(hapd_iface->bss[j]);
2657 #endif /* NEED_AP_MLME */
2658
2659 /* same as hostapd_interface_deinit without deinitializing ctrl-iface */
2660 for (j = 0; j < hapd_iface->num_bss; j++) {
2661 struct hostapd_data *hapd = hapd_iface->bss[j];
2662 hostapd_bss_deinit_no_free(hapd);
2663 hostapd_free_hapd_data(hapd);
2664 }
2665
2666 hostapd_deinit_driver(driver, drv_priv, hapd_iface);
2667
2668 /* From hostapd_cleanup_iface: These were initialized in
2669 * hostapd_setup_interface and hostapd_setup_interface_complete
2670 */
2671 hostapd_cleanup_iface_partial(hapd_iface);
2672
2673 wpa_printf(MSG_DEBUG, "Interface %s disabled",
2674 hapd_iface->bss[0]->conf->iface);
2675 hostapd_set_state(hapd_iface, HAPD_IFACE_DISABLED);
2676 return 0;
2677 }
2678
2679
2680 static struct hostapd_iface *
hostapd_iface_alloc(struct hapd_interfaces * interfaces)2681 hostapd_iface_alloc(struct hapd_interfaces *interfaces)
2682 {
2683 struct hostapd_iface **iface, *hapd_iface;
2684
2685 iface = os_realloc_array(interfaces->iface, interfaces->count + 1,
2686 sizeof(struct hostapd_iface *));
2687 if (iface == NULL)
2688 return NULL;
2689 interfaces->iface = iface;
2690 hapd_iface = interfaces->iface[interfaces->count] =
2691 hostapd_alloc_iface();
2692 if (hapd_iface == NULL) {
2693 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
2694 "the interface", __func__);
2695 return NULL;
2696 }
2697 interfaces->count++;
2698 hapd_iface->interfaces = interfaces;
2699
2700 return hapd_iface;
2701 }
2702
2703
2704 static struct hostapd_config *
hostapd_config_alloc(struct hapd_interfaces * interfaces,const char * ifname,const char * ctrl_iface,const char * driver)2705 hostapd_config_alloc(struct hapd_interfaces *interfaces, const char *ifname,
2706 const char *ctrl_iface, const char *driver)
2707 {
2708 struct hostapd_bss_config *bss;
2709 struct hostapd_config *conf;
2710
2711 /* Allocates memory for bss and conf */
2712 conf = hostapd_config_defaults();
2713 if (conf == NULL) {
2714 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
2715 "configuration", __func__);
2716 return NULL;
2717 }
2718
2719 if (driver) {
2720 int j;
2721
2722 for (j = 0; wpa_drivers[j]; j++) {
2723 if (os_strcmp(driver, wpa_drivers[j]->name) == 0) {
2724 conf->driver = wpa_drivers[j];
2725 goto skip;
2726 }
2727 }
2728
2729 wpa_printf(MSG_ERROR,
2730 "Invalid/unknown driver '%s' - registering the default driver",
2731 driver);
2732 }
2733
2734 conf->driver = wpa_drivers[0];
2735 if (conf->driver == NULL) {
2736 wpa_printf(MSG_ERROR, "No driver wrappers registered!");
2737 hostapd_config_free(conf);
2738 return NULL;
2739 }
2740
2741 skip:
2742 bss = conf->last_bss = conf->bss[0];
2743
2744 os_strlcpy(bss->iface, ifname, sizeof(bss->iface));
2745 bss->ctrl_interface = os_strdup(ctrl_iface);
2746 if (bss->ctrl_interface == NULL) {
2747 hostapd_config_free(conf);
2748 return NULL;
2749 }
2750
2751 /* Reading configuration file skipped, will be done in SET!
2752 * From reading the configuration till the end has to be done in
2753 * SET
2754 */
2755 return conf;
2756 }
2757
2758
hostapd_data_alloc(struct hostapd_iface * hapd_iface,struct hostapd_config * conf)2759 static int hostapd_data_alloc(struct hostapd_iface *hapd_iface,
2760 struct hostapd_config *conf)
2761 {
2762 size_t i;
2763 struct hostapd_data *hapd;
2764
2765 hapd_iface->bss = os_calloc(conf->num_bss,
2766 sizeof(struct hostapd_data *));
2767 if (hapd_iface->bss == NULL)
2768 return -1;
2769
2770 for (i = 0; i < conf->num_bss; i++) {
2771 hapd = hapd_iface->bss[i] =
2772 hostapd_alloc_bss_data(hapd_iface, conf, conf->bss[i]);
2773 if (hapd == NULL) {
2774 while (i > 0) {
2775 i--;
2776 os_free(hapd_iface->bss[i]);
2777 hapd_iface->bss[i] = NULL;
2778 }
2779 os_free(hapd_iface->bss);
2780 hapd_iface->bss = NULL;
2781 return -1;
2782 }
2783 hapd->msg_ctx = hapd;
2784 }
2785
2786 hapd_iface->conf = conf;
2787 hapd_iface->num_bss = conf->num_bss;
2788
2789 return 0;
2790 }
2791
2792
hostapd_add_iface(struct hapd_interfaces * interfaces,char * buf)2793 int hostapd_add_iface(struct hapd_interfaces *interfaces, char *buf)
2794 {
2795 struct hostapd_config *conf = NULL;
2796 struct hostapd_iface *hapd_iface = NULL, *new_iface = NULL;
2797 struct hostapd_data *hapd;
2798 char *ptr;
2799 size_t i, j;
2800 const char *conf_file = NULL, *phy_name = NULL;
2801
2802 if (os_strncmp(buf, "bss_config=", 11) == 0) {
2803 char *pos;
2804 phy_name = buf + 11;
2805 pos = os_strchr(phy_name, ':');
2806 if (!pos)
2807 return -1;
2808 *pos++ = '\0';
2809 conf_file = pos;
2810 if (!os_strlen(conf_file))
2811 return -1;
2812
2813 hapd_iface = hostapd_interface_init_bss(interfaces, phy_name,
2814 conf_file, 0);
2815 if (!hapd_iface)
2816 return -1;
2817 for (j = 0; j < interfaces->count; j++) {
2818 if (interfaces->iface[j] == hapd_iface)
2819 break;
2820 }
2821 if (j == interfaces->count) {
2822 struct hostapd_iface **tmp;
2823 tmp = os_realloc_array(interfaces->iface,
2824 interfaces->count + 1,
2825 sizeof(struct hostapd_iface *));
2826 if (!tmp) {
2827 hostapd_interface_deinit_free(hapd_iface);
2828 return -1;
2829 }
2830 interfaces->iface = tmp;
2831 interfaces->iface[interfaces->count++] = hapd_iface;
2832 new_iface = hapd_iface;
2833 }
2834
2835 if (new_iface) {
2836 if (interfaces->driver_init(hapd_iface))
2837 goto fail;
2838
2839 if (hostapd_setup_interface(hapd_iface)) {
2840 hostapd_deinit_driver(
2841 hapd_iface->bss[0]->driver,
2842 hapd_iface->bss[0]->drv_priv,
2843 hapd_iface);
2844 goto fail;
2845 }
2846 } else {
2847 /* Assign new BSS with bss[0]'s driver info */
2848 hapd = hapd_iface->bss[hapd_iface->num_bss - 1];
2849 hapd->driver = hapd_iface->bss[0]->driver;
2850 hapd->drv_priv = hapd_iface->bss[0]->drv_priv;
2851 os_memcpy(hapd->own_addr, hapd_iface->bss[0]->own_addr,
2852 ETH_ALEN);
2853
2854 if (start_ctrl_iface_bss(hapd) < 0 ||
2855 (hapd_iface->state == HAPD_IFACE_ENABLED &&
2856 hostapd_setup_bss(hapd, -1))) {
2857 hostapd_cleanup(hapd);
2858 hapd_iface->bss[hapd_iface->num_bss - 1] = NULL;
2859 hapd_iface->conf->num_bss--;
2860 hapd_iface->num_bss--;
2861 wpa_printf(MSG_DEBUG, "%s: free hapd %p %s",
2862 __func__, hapd, hapd->conf->iface);
2863 hostapd_config_free_bss(hapd->conf);
2864 hapd->conf = NULL;
2865 os_free(hapd);
2866 return -1;
2867 }
2868 }
2869 hostapd_owe_update_trans(hapd_iface);
2870 return 0;
2871 }
2872
2873 ptr = os_strchr(buf, ' ');
2874 if (ptr == NULL)
2875 return -1;
2876 *ptr++ = '\0';
2877
2878 if (os_strncmp(ptr, "config=", 7) == 0)
2879 conf_file = ptr + 7;
2880
2881 for (i = 0; i < interfaces->count; i++) {
2882 if (!os_strcmp(interfaces->iface[i]->conf->bss[0]->iface,
2883 buf)) {
2884 wpa_printf(MSG_INFO, "Cannot add interface - it "
2885 "already exists");
2886 return -1;
2887 }
2888 }
2889
2890 hapd_iface = hostapd_iface_alloc(interfaces);
2891 if (hapd_iface == NULL) {
2892 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2893 "for interface", __func__);
2894 goto fail;
2895 }
2896 new_iface = hapd_iface;
2897
2898 if (conf_file && interfaces->config_read_cb) {
2899 conf = interfaces->config_read_cb(conf_file);
2900 if (conf && conf->bss)
2901 os_strlcpy(conf->bss[0]->iface, buf,
2902 sizeof(conf->bss[0]->iface));
2903 } else {
2904 char *driver = os_strchr(ptr, ' ');
2905
2906 if (driver)
2907 *driver++ = '\0';
2908 conf = hostapd_config_alloc(interfaces, buf, ptr, driver);
2909 }
2910
2911 if (conf == NULL || conf->bss == NULL) {
2912 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2913 "for configuration", __func__);
2914 goto fail;
2915 }
2916
2917 if (hostapd_data_alloc(hapd_iface, conf) < 0) {
2918 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2919 "for hostapd", __func__);
2920 goto fail;
2921 }
2922 conf = NULL;
2923
2924 if (start_ctrl_iface(hapd_iface) < 0)
2925 goto fail;
2926
2927 wpa_printf(MSG_INFO, "Add interface '%s'",
2928 hapd_iface->conf->bss[0]->iface);
2929
2930 return 0;
2931
2932 fail:
2933 if (conf)
2934 hostapd_config_free(conf);
2935 if (hapd_iface) {
2936 if (hapd_iface->bss) {
2937 for (i = 0; i < hapd_iface->num_bss; i++) {
2938 hapd = hapd_iface->bss[i];
2939 if (!hapd)
2940 continue;
2941 if (hapd_iface->interfaces &&
2942 hapd_iface->interfaces->ctrl_iface_deinit)
2943 hapd_iface->interfaces->
2944 ctrl_iface_deinit(hapd);
2945 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
2946 __func__, hapd_iface->bss[i],
2947 hapd->conf->iface);
2948 hostapd_cleanup(hapd);
2949 os_free(hapd);
2950 hapd_iface->bss[i] = NULL;
2951 }
2952 os_free(hapd_iface->bss);
2953 hapd_iface->bss = NULL;
2954 }
2955 if (new_iface) {
2956 interfaces->count--;
2957 interfaces->iface[interfaces->count] = NULL;
2958 }
2959 hostapd_cleanup_iface(hapd_iface);
2960 }
2961 return -1;
2962 }
2963
2964
hostapd_remove_bss(struct hostapd_iface * iface,unsigned int idx)2965 static int hostapd_remove_bss(struct hostapd_iface *iface, unsigned int idx)
2966 {
2967 size_t i;
2968
2969 wpa_printf(MSG_INFO, "Remove BSS '%s'", iface->conf->bss[idx]->iface);
2970
2971 /* Remove hostapd_data only if it has already been initialized */
2972 if (idx < iface->num_bss) {
2973 struct hostapd_data *hapd = iface->bss[idx];
2974
2975 hostapd_bss_deinit(hapd);
2976 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
2977 __func__, hapd, hapd->conf->iface);
2978 hostapd_config_free_bss(hapd->conf);
2979 hapd->conf = NULL;
2980 os_free(hapd);
2981
2982 iface->num_bss--;
2983
2984 for (i = idx; i < iface->num_bss; i++)
2985 iface->bss[i] = iface->bss[i + 1];
2986 } else {
2987 hostapd_config_free_bss(iface->conf->bss[idx]);
2988 iface->conf->bss[idx] = NULL;
2989 }
2990
2991 iface->conf->num_bss--;
2992 for (i = idx; i < iface->conf->num_bss; i++)
2993 iface->conf->bss[i] = iface->conf->bss[i + 1];
2994
2995 return 0;
2996 }
2997
2998
hostapd_remove_iface(struct hapd_interfaces * interfaces,char * buf)2999 int hostapd_remove_iface(struct hapd_interfaces *interfaces, char *buf)
3000 {
3001 struct hostapd_iface *hapd_iface;
3002 size_t i, j, k = 0;
3003
3004 for (i = 0; i < interfaces->count; i++) {
3005 hapd_iface = interfaces->iface[i];
3006 if (hapd_iface == NULL)
3007 return -1;
3008 if (!os_strcmp(hapd_iface->conf->bss[0]->iface, buf)) {
3009 wpa_printf(MSG_INFO, "Remove interface '%s'", buf);
3010 hapd_iface->driver_ap_teardown =
3011 !!(hapd_iface->drv_flags &
3012 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
3013
3014 hostapd_interface_deinit_free(hapd_iface);
3015 k = i;
3016 while (k < (interfaces->count - 1)) {
3017 interfaces->iface[k] =
3018 interfaces->iface[k + 1];
3019 k++;
3020 }
3021 interfaces->count--;
3022 return 0;
3023 }
3024
3025 for (j = 0; j < hapd_iface->conf->num_bss; j++) {
3026 if (!os_strcmp(hapd_iface->conf->bss[j]->iface, buf)) {
3027 hapd_iface->driver_ap_teardown =
3028 !(hapd_iface->drv_flags &
3029 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
3030 return hostapd_remove_bss(hapd_iface, j);
3031 }
3032 }
3033 }
3034 return -1;
3035 }
3036
3037
3038 /**
3039 * hostapd_new_assoc_sta - Notify that a new station associated with the AP
3040 * @hapd: Pointer to BSS data
3041 * @sta: Pointer to the associated STA data
3042 * @reassoc: 1 to indicate this was a re-association; 0 = first association
3043 *
3044 * This function will be called whenever a station associates with the AP. It
3045 * can be called from ieee802_11.c for drivers that export MLME to hostapd and
3046 * from drv_callbacks.c based on driver events for drivers that take care of
3047 * management frames (IEEE 802.11 authentication and association) internally.
3048 */
hostapd_new_assoc_sta(struct hostapd_data * hapd,struct sta_info * sta,int reassoc)3049 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
3050 int reassoc)
3051 {
3052 if (hapd->tkip_countermeasures) {
3053 hostapd_drv_sta_deauth(hapd, sta->addr,
3054 WLAN_REASON_MICHAEL_MIC_FAILURE);
3055 return;
3056 }
3057
3058 hostapd_prune_associations(hapd, sta->addr);
3059 ap_sta_clear_disconnect_timeouts(hapd, sta);
3060
3061 /* IEEE 802.11F (IAPP) */
3062 if (hapd->conf->ieee802_11f)
3063 iapp_new_station(hapd->iapp, sta);
3064
3065 #ifdef CONFIG_P2P
3066 if (sta->p2p_ie == NULL && !sta->no_p2p_set) {
3067 sta->no_p2p_set = 1;
3068 hapd->num_sta_no_p2p++;
3069 if (hapd->num_sta_no_p2p == 1)
3070 hostapd_p2p_non_p2p_sta_connected(hapd);
3071 }
3072 #endif /* CONFIG_P2P */
3073
3074 airtime_policy_new_sta(hapd, sta);
3075
3076 /* Start accounting here, if IEEE 802.1X and WPA are not used.
3077 * IEEE 802.1X/WPA code will start accounting after the station has
3078 * been authorized. */
3079 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen) {
3080 ap_sta_set_authorized(hapd, sta, 1);
3081 os_get_reltime(&sta->connected_time);
3082 accounting_sta_start(hapd, sta);
3083 }
3084
3085 /* Start IEEE 802.1X authentication process for new stations */
3086 ieee802_1x_new_station(hapd, sta);
3087 if (reassoc) {
3088 if (sta->auth_alg != WLAN_AUTH_FT &&
3089 sta->auth_alg != WLAN_AUTH_FILS_SK &&
3090 sta->auth_alg != WLAN_AUTH_FILS_SK_PFS &&
3091 sta->auth_alg != WLAN_AUTH_FILS_PK &&
3092 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
3093 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
3094 } else
3095 wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
3096
3097 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED) {
3098 if (eloop_cancel_timeout(ap_handle_timer, hapd, sta) > 0) {
3099 wpa_printf(MSG_DEBUG,
3100 "%s: %s: canceled wired ap_handle_timer timeout for "
3101 MACSTR,
3102 hapd->conf->iface, __func__,
3103 MAC2STR(sta->addr));
3104 }
3105 } else if (!(hapd->iface->drv_flags &
3106 WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) {
3107 wpa_printf(MSG_DEBUG,
3108 "%s: %s: reschedule ap_handle_timer timeout for "
3109 MACSTR " (%d seconds - ap_max_inactivity)",
3110 hapd->conf->iface, __func__, MAC2STR(sta->addr),
3111 hapd->conf->ap_max_inactivity);
3112 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
3113 eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
3114 ap_handle_timer, hapd, sta);
3115 }
3116
3117 #ifdef CONFIG_MACSEC
3118 if (hapd->conf->wpa_key_mgmt == WPA_KEY_MGMT_NONE &&
3119 hapd->conf->mka_psk_set)
3120 ieee802_1x_create_preshared_mka_hapd(hapd, sta);
3121 else
3122 ieee802_1x_alloc_kay_sm_hapd(hapd, sta);
3123 #endif /* CONFIG_MACSEC */
3124 }
3125
3126
hostapd_state_text(enum hostapd_iface_state s)3127 const char * hostapd_state_text(enum hostapd_iface_state s)
3128 {
3129 switch (s) {
3130 case HAPD_IFACE_UNINITIALIZED:
3131 return "UNINITIALIZED";
3132 case HAPD_IFACE_DISABLED:
3133 return "DISABLED";
3134 case HAPD_IFACE_COUNTRY_UPDATE:
3135 return "COUNTRY_UPDATE";
3136 case HAPD_IFACE_ACS:
3137 return "ACS";
3138 case HAPD_IFACE_HT_SCAN:
3139 return "HT_SCAN";
3140 case HAPD_IFACE_DFS:
3141 return "DFS";
3142 case HAPD_IFACE_ENABLED:
3143 return "ENABLED";
3144 }
3145
3146 return "UNKNOWN";
3147 }
3148
3149
hostapd_set_state(struct hostapd_iface * iface,enum hostapd_iface_state s)3150 void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s)
3151 {
3152 wpa_printf(MSG_INFO, "%s: interface state %s->%s",
3153 iface->conf ? iface->conf->bss[0]->iface : "N/A",
3154 hostapd_state_text(iface->state), hostapd_state_text(s));
3155 iface->state = s;
3156 }
3157
3158
hostapd_csa_in_progress(struct hostapd_iface * iface)3159 int hostapd_csa_in_progress(struct hostapd_iface *iface)
3160 {
3161 unsigned int i;
3162
3163 for (i = 0; i < iface->num_bss; i++)
3164 if (iface->bss[i]->csa_in_progress)
3165 return 1;
3166 return 0;
3167 }
3168
3169
3170 #ifdef NEED_AP_MLME
3171
free_beacon_data(struct beacon_data * beacon)3172 static void free_beacon_data(struct beacon_data *beacon)
3173 {
3174 os_free(beacon->head);
3175 beacon->head = NULL;
3176 os_free(beacon->tail);
3177 beacon->tail = NULL;
3178 os_free(beacon->probe_resp);
3179 beacon->probe_resp = NULL;
3180 os_free(beacon->beacon_ies);
3181 beacon->beacon_ies = NULL;
3182 os_free(beacon->proberesp_ies);
3183 beacon->proberesp_ies = NULL;
3184 os_free(beacon->assocresp_ies);
3185 beacon->assocresp_ies = NULL;
3186 }
3187
3188
hostapd_build_beacon_data(struct hostapd_data * hapd,struct beacon_data * beacon)3189 static int hostapd_build_beacon_data(struct hostapd_data *hapd,
3190 struct beacon_data *beacon)
3191 {
3192 struct wpabuf *beacon_extra, *proberesp_extra, *assocresp_extra;
3193 struct wpa_driver_ap_params params;
3194 int ret;
3195
3196 os_memset(beacon, 0, sizeof(*beacon));
3197 ret = ieee802_11_build_ap_params(hapd, ¶ms);
3198 if (ret < 0)
3199 return ret;
3200
3201 ret = hostapd_build_ap_extra_ies(hapd, &beacon_extra,
3202 &proberesp_extra,
3203 &assocresp_extra);
3204 if (ret)
3205 goto free_ap_params;
3206
3207 ret = -1;
3208 beacon->head = os_memdup(params.head, params.head_len);
3209 if (!beacon->head)
3210 goto free_ap_extra_ies;
3211
3212 beacon->head_len = params.head_len;
3213
3214 beacon->tail = os_memdup(params.tail, params.tail_len);
3215 if (!beacon->tail)
3216 goto free_beacon;
3217
3218 beacon->tail_len = params.tail_len;
3219
3220 if (params.proberesp != NULL) {
3221 beacon->probe_resp = os_memdup(params.proberesp,
3222 params.proberesp_len);
3223 if (!beacon->probe_resp)
3224 goto free_beacon;
3225
3226 beacon->probe_resp_len = params.proberesp_len;
3227 }
3228
3229 /* copy the extra ies */
3230 if (beacon_extra) {
3231 beacon->beacon_ies = os_memdup(beacon_extra->buf,
3232 wpabuf_len(beacon_extra));
3233 if (!beacon->beacon_ies)
3234 goto free_beacon;
3235
3236 beacon->beacon_ies_len = wpabuf_len(beacon_extra);
3237 }
3238
3239 if (proberesp_extra) {
3240 beacon->proberesp_ies = os_memdup(proberesp_extra->buf,
3241 wpabuf_len(proberesp_extra));
3242 if (!beacon->proberesp_ies)
3243 goto free_beacon;
3244
3245 beacon->proberesp_ies_len = wpabuf_len(proberesp_extra);
3246 }
3247
3248 if (assocresp_extra) {
3249 beacon->assocresp_ies = os_memdup(assocresp_extra->buf,
3250 wpabuf_len(assocresp_extra));
3251 if (!beacon->assocresp_ies)
3252 goto free_beacon;
3253
3254 beacon->assocresp_ies_len = wpabuf_len(assocresp_extra);
3255 }
3256
3257 ret = 0;
3258 free_beacon:
3259 /* if the function fails, the caller should not free beacon data */
3260 if (ret)
3261 free_beacon_data(beacon);
3262
3263 free_ap_extra_ies:
3264 hostapd_free_ap_extra_ies(hapd, beacon_extra, proberesp_extra,
3265 assocresp_extra);
3266 free_ap_params:
3267 ieee802_11_free_ap_params(¶ms);
3268 return ret;
3269 }
3270
3271
3272 /*
3273 * TODO: This flow currently supports only changing channel and width within
3274 * the same hw_mode. Any other changes to MAC parameters or provided settings
3275 * are not supported.
3276 */
hostapd_change_config_freq(struct hostapd_data * hapd,struct hostapd_config * conf,struct hostapd_freq_params * params,struct hostapd_freq_params * old_params)3277 static int hostapd_change_config_freq(struct hostapd_data *hapd,
3278 struct hostapd_config *conf,
3279 struct hostapd_freq_params *params,
3280 struct hostapd_freq_params *old_params)
3281 {
3282 int channel;
3283 u8 seg0, seg1;
3284 struct hostapd_hw_modes *mode;
3285
3286 if (!params->channel) {
3287 /* check if the new channel is supported by hw */
3288 params->channel = hostapd_hw_get_channel(hapd, params->freq);
3289 }
3290
3291 channel = params->channel;
3292 if (!channel)
3293 return -1;
3294
3295 mode = hapd->iface->current_mode;
3296
3297 /* if a pointer to old_params is provided we save previous state */
3298 if (old_params &&
3299 hostapd_set_freq_params(old_params, conf->hw_mode,
3300 hostapd_hw_get_freq(hapd, conf->channel),
3301 conf->channel, conf->ieee80211n,
3302 conf->ieee80211ac, conf->ieee80211ax,
3303 conf->secondary_channel,
3304 hostapd_get_oper_chwidth(conf),
3305 hostapd_get_oper_centr_freq_seg0_idx(conf),
3306 hostapd_get_oper_centr_freq_seg1_idx(conf),
3307 conf->vht_capab,
3308 mode ? &mode->he_capab[IEEE80211_MODE_AP] :
3309 NULL))
3310 return -1;
3311
3312 switch (params->bandwidth) {
3313 case 0:
3314 case 20:
3315 case 40:
3316 hostapd_set_oper_chwidth(conf, CHANWIDTH_USE_HT);
3317 break;
3318 case 80:
3319 if (params->center_freq2)
3320 hostapd_set_oper_chwidth(conf, CHANWIDTH_80P80MHZ);
3321 else
3322 hostapd_set_oper_chwidth(conf, CHANWIDTH_80MHZ);
3323 break;
3324 case 160:
3325 hostapd_set_oper_chwidth(conf, CHANWIDTH_160MHZ);
3326 break;
3327 default:
3328 return -1;
3329 }
3330
3331 conf->channel = channel;
3332 conf->ieee80211n = params->ht_enabled;
3333 conf->secondary_channel = params->sec_channel_offset;
3334 ieee80211_freq_to_chan(params->center_freq1,
3335 &seg0);
3336 ieee80211_freq_to_chan(params->center_freq2,
3337 &seg1);
3338 hostapd_set_oper_centr_freq_seg0_idx(conf, seg0);
3339 hostapd_set_oper_centr_freq_seg1_idx(conf, seg1);
3340
3341 /* TODO: maybe call here hostapd_config_check here? */
3342
3343 return 0;
3344 }
3345
3346
hostapd_fill_csa_settings(struct hostapd_data * hapd,struct csa_settings * settings)3347 static int hostapd_fill_csa_settings(struct hostapd_data *hapd,
3348 struct csa_settings *settings)
3349 {
3350 struct hostapd_iface *iface = hapd->iface;
3351 struct hostapd_freq_params old_freq;
3352 int ret;
3353 u8 chan, bandwidth;
3354
3355 os_memset(&old_freq, 0, sizeof(old_freq));
3356 if (!iface || !iface->freq || hapd->csa_in_progress)
3357 return -1;
3358
3359 switch (settings->freq_params.bandwidth) {
3360 case 80:
3361 if (settings->freq_params.center_freq2)
3362 bandwidth = CHANWIDTH_80P80MHZ;
3363 else
3364 bandwidth = CHANWIDTH_80MHZ;
3365 break;
3366 case 160:
3367 bandwidth = CHANWIDTH_160MHZ;
3368 break;
3369 default:
3370 bandwidth = CHANWIDTH_USE_HT;
3371 break;
3372 }
3373
3374 if (ieee80211_freq_to_channel_ext(
3375 settings->freq_params.freq,
3376 settings->freq_params.sec_channel_offset,
3377 bandwidth,
3378 &hapd->iface->cs_oper_class,
3379 &chan) == NUM_HOSTAPD_MODES) {
3380 wpa_printf(MSG_DEBUG,
3381 "invalid frequency for channel switch (freq=%d, sec_channel_offset=%d, vht_enabled=%d, he_enabled=%d)",
3382 settings->freq_params.freq,
3383 settings->freq_params.sec_channel_offset,
3384 settings->freq_params.vht_enabled,
3385 settings->freq_params.he_enabled);
3386 return -1;
3387 }
3388
3389 settings->freq_params.channel = chan;
3390
3391 ret = hostapd_change_config_freq(iface->bss[0], iface->conf,
3392 &settings->freq_params,
3393 &old_freq);
3394 if (ret)
3395 return ret;
3396
3397 ret = hostapd_build_beacon_data(hapd, &settings->beacon_after);
3398
3399 /* change back the configuration */
3400 hostapd_change_config_freq(iface->bss[0], iface->conf,
3401 &old_freq, NULL);
3402
3403 if (ret)
3404 return ret;
3405
3406 /* set channel switch parameters for csa ie */
3407 hapd->cs_freq_params = settings->freq_params;
3408 hapd->cs_count = settings->cs_count;
3409 hapd->cs_block_tx = settings->block_tx;
3410
3411 ret = hostapd_build_beacon_data(hapd, &settings->beacon_csa);
3412 if (ret) {
3413 free_beacon_data(&settings->beacon_after);
3414 return ret;
3415 }
3416
3417 settings->counter_offset_beacon[0] = hapd->cs_c_off_beacon;
3418 settings->counter_offset_presp[0] = hapd->cs_c_off_proberesp;
3419 settings->counter_offset_beacon[1] = hapd->cs_c_off_ecsa_beacon;
3420 settings->counter_offset_presp[1] = hapd->cs_c_off_ecsa_proberesp;
3421
3422 return 0;
3423 }
3424
3425
hostapd_cleanup_cs_params(struct hostapd_data * hapd)3426 void hostapd_cleanup_cs_params(struct hostapd_data *hapd)
3427 {
3428 os_memset(&hapd->cs_freq_params, 0, sizeof(hapd->cs_freq_params));
3429 hapd->cs_count = 0;
3430 hapd->cs_block_tx = 0;
3431 hapd->cs_c_off_beacon = 0;
3432 hapd->cs_c_off_proberesp = 0;
3433 hapd->csa_in_progress = 0;
3434 hapd->cs_c_off_ecsa_beacon = 0;
3435 hapd->cs_c_off_ecsa_proberesp = 0;
3436 }
3437
3438
hostapd_chan_switch_vht_config(struct hostapd_data * hapd,int vht_enabled)3439 void hostapd_chan_switch_vht_config(struct hostapd_data *hapd, int vht_enabled)
3440 {
3441 if (vht_enabled)
3442 hapd->iconf->ch_switch_vht_config |= CH_SWITCH_VHT_ENABLED;
3443 else
3444 hapd->iconf->ch_switch_vht_config |= CH_SWITCH_VHT_DISABLED;
3445
3446 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
3447 HOSTAPD_LEVEL_INFO, "CHAN_SWITCH VHT CONFIG 0x%x",
3448 hapd->iconf->ch_switch_vht_config);
3449 }
3450
3451
hostapd_switch_channel(struct hostapd_data * hapd,struct csa_settings * settings)3452 int hostapd_switch_channel(struct hostapd_data *hapd,
3453 struct csa_settings *settings)
3454 {
3455 int ret;
3456
3457 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
3458 wpa_printf(MSG_INFO, "CSA is not supported");
3459 return -1;
3460 }
3461
3462 ret = hostapd_fill_csa_settings(hapd, settings);
3463 if (ret)
3464 return ret;
3465
3466 ret = hostapd_drv_switch_channel(hapd, settings);
3467 free_beacon_data(&settings->beacon_csa);
3468 free_beacon_data(&settings->beacon_after);
3469
3470 if (ret) {
3471 /* if we failed, clean cs parameters */
3472 hostapd_cleanup_cs_params(hapd);
3473 return ret;
3474 }
3475
3476 hapd->csa_in_progress = 1;
3477 return 0;
3478 }
3479
3480
3481 void
hostapd_switch_channel_fallback(struct hostapd_iface * iface,const struct hostapd_freq_params * freq_params)3482 hostapd_switch_channel_fallback(struct hostapd_iface *iface,
3483 const struct hostapd_freq_params *freq_params)
3484 {
3485 int seg0_idx = 0, seg1_idx = 0, bw = CHANWIDTH_USE_HT;
3486
3487 wpa_printf(MSG_DEBUG, "Restarting all CSA-related BSSes");
3488
3489 if (freq_params->center_freq1)
3490 seg0_idx = 36 + (freq_params->center_freq1 - 5180) / 5;
3491 if (freq_params->center_freq2)
3492 seg1_idx = 36 + (freq_params->center_freq2 - 5180) / 5;
3493
3494 switch (freq_params->bandwidth) {
3495 case 0:
3496 case 20:
3497 case 40:
3498 bw = CHANWIDTH_USE_HT;
3499 break;
3500 case 80:
3501 if (freq_params->center_freq2)
3502 bw = CHANWIDTH_80P80MHZ;
3503 else
3504 bw = CHANWIDTH_80MHZ;
3505 break;
3506 case 160:
3507 bw = CHANWIDTH_160MHZ;
3508 break;
3509 default:
3510 wpa_printf(MSG_WARNING, "Unknown CSA bandwidth: %d",
3511 freq_params->bandwidth);
3512 break;
3513 }
3514
3515 iface->freq = freq_params->freq;
3516 iface->conf->channel = freq_params->channel;
3517 iface->conf->secondary_channel = freq_params->sec_channel_offset;
3518 hostapd_set_oper_centr_freq_seg0_idx(iface->conf, seg0_idx);
3519 hostapd_set_oper_centr_freq_seg1_idx(iface->conf, seg1_idx);
3520 hostapd_set_oper_chwidth(iface->conf, bw);
3521 iface->conf->ieee80211n = freq_params->ht_enabled;
3522 iface->conf->ieee80211ac = freq_params->vht_enabled;
3523 iface->conf->ieee80211ax = freq_params->he_enabled;
3524
3525 /*
3526 * cs_params must not be cleared earlier because the freq_params
3527 * argument may actually point to one of these.
3528 * These params will be cleared during interface disable below.
3529 */
3530 hostapd_disable_iface(iface);
3531 hostapd_enable_iface(iface);
3532 }
3533
3534 #endif /* NEED_AP_MLME */
3535
3536
hostapd_get_iface(struct hapd_interfaces * interfaces,const char * ifname)3537 struct hostapd_data * hostapd_get_iface(struct hapd_interfaces *interfaces,
3538 const char *ifname)
3539 {
3540 size_t i, j;
3541
3542 for (i = 0; i < interfaces->count; i++) {
3543 struct hostapd_iface *iface = interfaces->iface[i];
3544
3545 for (j = 0; j < iface->num_bss; j++) {
3546 struct hostapd_data *hapd = iface->bss[j];
3547
3548 if (os_strcmp(ifname, hapd->conf->iface) == 0)
3549 return hapd;
3550 }
3551 }
3552
3553 return NULL;
3554 }
3555
3556
hostapd_periodic_iface(struct hostapd_iface * iface)3557 void hostapd_periodic_iface(struct hostapd_iface *iface)
3558 {
3559 size_t i;
3560
3561 ap_list_timer(iface);
3562
3563 for (i = 0; i < iface->num_bss; i++) {
3564 struct hostapd_data *hapd = iface->bss[i];
3565
3566 if (!hapd->started)
3567 continue;
3568
3569 #ifndef CONFIG_NO_RADIUS
3570 hostapd_acl_expire(hapd);
3571 #endif /* CONFIG_NO_RADIUS */
3572 }
3573 }
3574