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[thirdparty/hostap.git] / src / ap / hostapd.c
1 /*
2 * hostapd / Initialization and configuration
3 * Copyright (c) 2002-2014, 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
11 #include "utils/common.h"
12 #include "utils/eloop.h"
13 #include "common/ieee802_11_defs.h"
14 #include "common/wpa_ctrl.h"
15 #include "common/hw_features_common.h"
16 #include "radius/radius_client.h"
17 #include "radius/radius_das.h"
18 #include "eap_server/tncs.h"
19 #include "eapol_auth/eapol_auth_sm.h"
20 #include "eapol_auth/eapol_auth_sm_i.h"
21 #include "fst/fst.h"
22 #include "hostapd.h"
23 #include "authsrv.h"
24 #include "sta_info.h"
25 #include "accounting.h"
26 #include "ap_list.h"
27 #include "beacon.h"
28 #include "iapp.h"
29 #include "ieee802_1x.h"
30 #include "ieee802_11_auth.h"
31 #include "vlan_init.h"
32 #include "wpa_auth.h"
33 #include "wps_hostapd.h"
34 #include "hw_features.h"
35 #include "wpa_auth_glue.h"
36 #include "ap_drv_ops.h"
37 #include "ap_config.h"
38 #include "p2p_hostapd.h"
39 #include "gas_serv.h"
40 #include "dfs.h"
41 #include "ieee802_11.h"
42 #include "bss_load.h"
43 #include "x_snoop.h"
44 #include "dhcp_snoop.h"
45 #include "ndisc_snoop.h"
46
47
48 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason);
49 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
50 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd);
51 static int setup_interface2(struct hostapd_iface *iface);
52 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx);
53
54
55 int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
56 int (*cb)(struct hostapd_iface *iface,
57 void *ctx), void *ctx)
58 {
59 size_t i;
60 int ret;
61
62 for (i = 0; i < interfaces->count; i++) {
63 ret = cb(interfaces->iface[i], ctx);
64 if (ret)
65 return ret;
66 }
67
68 return 0;
69 }
70
71
72 static void hostapd_reload_bss(struct hostapd_data *hapd)
73 {
74 struct hostapd_ssid *ssid;
75
76 #ifndef CONFIG_NO_RADIUS
77 radius_client_reconfig(hapd->radius, hapd->conf->radius);
78 #endif /* CONFIG_NO_RADIUS */
79
80 ssid = &hapd->conf->ssid;
81 if (!ssid->wpa_psk_set && ssid->wpa_psk && !ssid->wpa_psk->next &&
82 ssid->wpa_passphrase_set && ssid->wpa_passphrase) {
83 /*
84 * Force PSK to be derived again since SSID or passphrase may
85 * have changed.
86 */
87 hostapd_config_clear_wpa_psk(&hapd->conf->ssid.wpa_psk);
88 }
89 if (hostapd_setup_wpa_psk(hapd->conf)) {
90 wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
91 "after reloading configuration");
92 }
93
94 if (hapd->conf->ieee802_1x || hapd->conf->wpa)
95 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1);
96 else
97 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
98
99 if ((hapd->conf->wpa || hapd->conf->osen) && hapd->wpa_auth == NULL) {
100 hostapd_setup_wpa(hapd);
101 if (hapd->wpa_auth)
102 wpa_init_keys(hapd->wpa_auth);
103 } else if (hapd->conf->wpa) {
104 const u8 *wpa_ie;
105 size_t wpa_ie_len;
106 hostapd_reconfig_wpa(hapd);
107 wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
108 if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len))
109 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
110 "the kernel driver.");
111 } else if (hapd->wpa_auth) {
112 wpa_deinit(hapd->wpa_auth);
113 hapd->wpa_auth = NULL;
114 hostapd_set_privacy(hapd, 0);
115 hostapd_setup_encryption(hapd->conf->iface, hapd);
116 hostapd_set_generic_elem(hapd, (u8 *) "", 0);
117 }
118
119 ieee802_11_set_beacon(hapd);
120 hostapd_update_wps(hapd);
121
122 if (hapd->conf->ssid.ssid_set &&
123 hostapd_set_ssid(hapd, hapd->conf->ssid.ssid,
124 hapd->conf->ssid.ssid_len)) {
125 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
126 /* try to continue */
127 }
128 wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
129 }
130
131
132 static void hostapd_clear_old(struct hostapd_iface *iface)
133 {
134 size_t j;
135
136 /*
137 * Deauthenticate all stations since the new configuration may not
138 * allow them to use the BSS anymore.
139 */
140 for (j = 0; j < iface->num_bss; j++) {
141 hostapd_flush_old_stations(iface->bss[j],
142 WLAN_REASON_PREV_AUTH_NOT_VALID);
143 hostapd_broadcast_wep_clear(iface->bss[j]);
144
145 #ifndef CONFIG_NO_RADIUS
146 /* TODO: update dynamic data based on changed configuration
147 * items (e.g., open/close sockets, etc.) */
148 radius_client_flush(iface->bss[j]->radius, 0);
149 #endif /* CONFIG_NO_RADIUS */
150 }
151 }
152
153
154 int hostapd_reload_config(struct hostapd_iface *iface)
155 {
156 struct hostapd_data *hapd = iface->bss[0];
157 struct hostapd_config *newconf, *oldconf;
158 size_t j;
159
160 if (iface->config_fname == NULL) {
161 /* Only in-memory config in use - assume it has been updated */
162 hostapd_clear_old(iface);
163 for (j = 0; j < iface->num_bss; j++)
164 hostapd_reload_bss(iface->bss[j]);
165 return 0;
166 }
167
168 if (iface->interfaces == NULL ||
169 iface->interfaces->config_read_cb == NULL)
170 return -1;
171 newconf = iface->interfaces->config_read_cb(iface->config_fname);
172 if (newconf == NULL)
173 return -1;
174
175 hostapd_clear_old(iface);
176
177 oldconf = hapd->iconf;
178 iface->conf = newconf;
179
180 for (j = 0; j < iface->num_bss; j++) {
181 hapd = iface->bss[j];
182 hapd->iconf = newconf;
183 hapd->iconf->channel = oldconf->channel;
184 hapd->iconf->acs = oldconf->acs;
185 hapd->iconf->secondary_channel = oldconf->secondary_channel;
186 hapd->iconf->ieee80211n = oldconf->ieee80211n;
187 hapd->iconf->ieee80211ac = oldconf->ieee80211ac;
188 hapd->iconf->ht_capab = oldconf->ht_capab;
189 hapd->iconf->vht_capab = oldconf->vht_capab;
190 hapd->iconf->vht_oper_chwidth = oldconf->vht_oper_chwidth;
191 hapd->iconf->vht_oper_centr_freq_seg0_idx =
192 oldconf->vht_oper_centr_freq_seg0_idx;
193 hapd->iconf->vht_oper_centr_freq_seg1_idx =
194 oldconf->vht_oper_centr_freq_seg1_idx;
195 hapd->conf = newconf->bss[j];
196 hostapd_reload_bss(hapd);
197 }
198
199 hostapd_config_free(oldconf);
200
201
202 return 0;
203 }
204
205
206 static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
207 char *ifname)
208 {
209 int i;
210
211 for (i = 0; i < NUM_WEP_KEYS; i++) {
212 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i,
213 0, NULL, 0, NULL, 0)) {
214 wpa_printf(MSG_DEBUG, "Failed to clear default "
215 "encryption keys (ifname=%s keyidx=%d)",
216 ifname, i);
217 }
218 }
219 #ifdef CONFIG_IEEE80211W
220 if (hapd->conf->ieee80211w) {
221 for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
222 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE,
223 NULL, i, 0, NULL,
224 0, NULL, 0)) {
225 wpa_printf(MSG_DEBUG, "Failed to clear "
226 "default mgmt encryption keys "
227 "(ifname=%s keyidx=%d)", ifname, i);
228 }
229 }
230 }
231 #endif /* CONFIG_IEEE80211W */
232 }
233
234
235 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
236 {
237 hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
238 return 0;
239 }
240
241
242 static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
243 {
244 int errors = 0, idx;
245 struct hostapd_ssid *ssid = &hapd->conf->ssid;
246
247 idx = ssid->wep.idx;
248 if (ssid->wep.default_len &&
249 hostapd_drv_set_key(hapd->conf->iface,
250 hapd, WPA_ALG_WEP, broadcast_ether_addr, idx,
251 1, NULL, 0, ssid->wep.key[idx],
252 ssid->wep.len[idx])) {
253 wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
254 errors++;
255 }
256
257 return errors;
258 }
259
260
261 static void hostapd_free_hapd_data(struct hostapd_data *hapd)
262 {
263 os_free(hapd->probereq_cb);
264 hapd->probereq_cb = NULL;
265 hapd->num_probereq_cb = 0;
266
267 #ifdef CONFIG_P2P
268 wpabuf_free(hapd->p2p_beacon_ie);
269 hapd->p2p_beacon_ie = NULL;
270 wpabuf_free(hapd->p2p_probe_resp_ie);
271 hapd->p2p_probe_resp_ie = NULL;
272 #endif /* CONFIG_P2P */
273
274 if (!hapd->started) {
275 wpa_printf(MSG_ERROR, "%s: Interface %s wasn't started",
276 __func__, hapd->conf->iface);
277 return;
278 }
279 hapd->started = 0;
280
281 wpa_printf(MSG_DEBUG, "%s(%s)", __func__, hapd->conf->iface);
282 iapp_deinit(hapd->iapp);
283 hapd->iapp = NULL;
284 accounting_deinit(hapd);
285 hostapd_deinit_wpa(hapd);
286 vlan_deinit(hapd);
287 hostapd_acl_deinit(hapd);
288 #ifndef CONFIG_NO_RADIUS
289 radius_client_deinit(hapd->radius);
290 hapd->radius = NULL;
291 radius_das_deinit(hapd->radius_das);
292 hapd->radius_das = NULL;
293 #endif /* CONFIG_NO_RADIUS */
294
295 hostapd_deinit_wps(hapd);
296
297 authsrv_deinit(hapd);
298
299 if (hapd->interface_added) {
300 hapd->interface_added = 0;
301 if (hostapd_if_remove(hapd, WPA_IF_AP_BSS, hapd->conf->iface)) {
302 wpa_printf(MSG_WARNING,
303 "Failed to remove BSS interface %s",
304 hapd->conf->iface);
305 hapd->interface_added = 1;
306 } else {
307 /*
308 * Since this was a dynamically added interface, the
309 * driver wrapper may have removed its internal instance
310 * and hapd->drv_priv is not valid anymore.
311 */
312 hapd->drv_priv = NULL;
313 }
314 }
315
316 wpabuf_free(hapd->time_adv);
317
318 #ifdef CONFIG_INTERWORKING
319 gas_serv_deinit(hapd);
320 #endif /* CONFIG_INTERWORKING */
321
322 bss_load_update_deinit(hapd);
323 ndisc_snoop_deinit(hapd);
324 dhcp_snoop_deinit(hapd);
325 x_snoop_deinit(hapd);
326
327 #ifdef CONFIG_SQLITE
328 bin_clear_free(hapd->tmp_eap_user.identity,
329 hapd->tmp_eap_user.identity_len);
330 bin_clear_free(hapd->tmp_eap_user.password,
331 hapd->tmp_eap_user.password_len);
332 #endif /* CONFIG_SQLITE */
333
334 #ifdef CONFIG_MESH
335 wpabuf_free(hapd->mesh_pending_auth);
336 hapd->mesh_pending_auth = NULL;
337 #endif /* CONFIG_MESH */
338 }
339
340
341 /**
342 * hostapd_cleanup - Per-BSS cleanup (deinitialization)
343 * @hapd: Pointer to BSS data
344 *
345 * This function is used to free all per-BSS data structures and resources.
346 * Most of the modules that are initialized in hostapd_setup_bss() are
347 * deinitialized here.
348 */
349 static void hostapd_cleanup(struct hostapd_data *hapd)
350 {
351 wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s))", __func__, hapd,
352 hapd->conf->iface);
353 if (hapd->iface->interfaces &&
354 hapd->iface->interfaces->ctrl_iface_deinit)
355 hapd->iface->interfaces->ctrl_iface_deinit(hapd);
356 hostapd_free_hapd_data(hapd);
357 }
358
359
360 static void sta_track_deinit(struct hostapd_iface *iface)
361 {
362 struct hostapd_sta_info *info;
363
364 if (!iface->num_sta_seen)
365 return;
366
367 while ((info = dl_list_first(&iface->sta_seen, struct hostapd_sta_info,
368 list))) {
369 dl_list_del(&info->list);
370 iface->num_sta_seen--;
371 os_free(info);
372 }
373 }
374
375
376 static void hostapd_cleanup_iface_partial(struct hostapd_iface *iface)
377 {
378 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
379 #ifdef CONFIG_IEEE80211N
380 #ifdef NEED_AP_MLME
381 hostapd_stop_setup_timers(iface);
382 #endif /* NEED_AP_MLME */
383 #endif /* CONFIG_IEEE80211N */
384 hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
385 iface->hw_features = NULL;
386 os_free(iface->current_rates);
387 iface->current_rates = NULL;
388 os_free(iface->basic_rates);
389 iface->basic_rates = NULL;
390 ap_list_deinit(iface);
391 sta_track_deinit(iface);
392 }
393
394
395 /**
396 * hostapd_cleanup_iface - Complete per-interface cleanup
397 * @iface: Pointer to interface data
398 *
399 * This function is called after per-BSS data structures are deinitialized
400 * with hostapd_cleanup().
401 */
402 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
403 {
404 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
405 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
406
407 hostapd_cleanup_iface_partial(iface);
408 hostapd_config_free(iface->conf);
409 iface->conf = NULL;
410
411 os_free(iface->config_fname);
412 os_free(iface->bss);
413 wpa_printf(MSG_DEBUG, "%s: free iface=%p", __func__, iface);
414 os_free(iface);
415 }
416
417
418 static void hostapd_clear_wep(struct hostapd_data *hapd)
419 {
420 if (hapd->drv_priv && !hapd->iface->driver_ap_teardown) {
421 hostapd_set_privacy(hapd, 0);
422 hostapd_broadcast_wep_clear(hapd);
423 }
424 }
425
426
427 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
428 {
429 int i;
430
431 hostapd_broadcast_wep_set(hapd);
432
433 if (hapd->conf->ssid.wep.default_len) {
434 hostapd_set_privacy(hapd, 1);
435 return 0;
436 }
437
438 /*
439 * When IEEE 802.1X is not enabled, the driver may need to know how to
440 * set authentication algorithms for static WEP.
441 */
442 hostapd_drv_set_authmode(hapd, hapd->conf->auth_algs);
443
444 for (i = 0; i < 4; i++) {
445 if (hapd->conf->ssid.wep.key[i] &&
446 hostapd_drv_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
447 i == hapd->conf->ssid.wep.idx, NULL, 0,
448 hapd->conf->ssid.wep.key[i],
449 hapd->conf->ssid.wep.len[i])) {
450 wpa_printf(MSG_WARNING, "Could not set WEP "
451 "encryption.");
452 return -1;
453 }
454 if (hapd->conf->ssid.wep.key[i] &&
455 i == hapd->conf->ssid.wep.idx)
456 hostapd_set_privacy(hapd, 1);
457 }
458
459 return 0;
460 }
461
462
463 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason)
464 {
465 int ret = 0;
466 u8 addr[ETH_ALEN];
467
468 if (hostapd_drv_none(hapd) || hapd->drv_priv == NULL)
469 return 0;
470
471 if (!hapd->iface->driver_ap_teardown) {
472 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
473 "Flushing old station entries");
474
475 if (hostapd_flush(hapd)) {
476 wpa_msg(hapd->msg_ctx, MSG_WARNING,
477 "Could not connect to kernel driver");
478 ret = -1;
479 }
480 }
481 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "Deauthenticate all stations");
482 os_memset(addr, 0xff, ETH_ALEN);
483 hostapd_drv_sta_deauth(hapd, addr, reason);
484 hostapd_free_stas(hapd);
485
486 return ret;
487 }
488
489
490 static void hostapd_bss_deinit_no_free(struct hostapd_data *hapd)
491 {
492 hostapd_free_stas(hapd);
493 hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
494 hostapd_clear_wep(hapd);
495 }
496
497
498 /**
499 * hostapd_validate_bssid_configuration - Validate BSSID configuration
500 * @iface: Pointer to interface data
501 * Returns: 0 on success, -1 on failure
502 *
503 * This function is used to validate that the configured BSSIDs are valid.
504 */
505 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
506 {
507 u8 mask[ETH_ALEN] = { 0 };
508 struct hostapd_data *hapd = iface->bss[0];
509 unsigned int i = iface->conf->num_bss, bits = 0, j;
510 int auto_addr = 0;
511
512 if (hostapd_drv_none(hapd))
513 return 0;
514
515 /* Generate BSSID mask that is large enough to cover the BSSIDs. */
516
517 /* Determine the bits necessary to cover the number of BSSIDs. */
518 for (i--; i; i >>= 1)
519 bits++;
520
521 /* Determine the bits necessary to any configured BSSIDs,
522 if they are higher than the number of BSSIDs. */
523 for (j = 0; j < iface->conf->num_bss; j++) {
524 if (hostapd_mac_comp_empty(iface->conf->bss[j]->bssid) == 0) {
525 if (j)
526 auto_addr++;
527 continue;
528 }
529
530 for (i = 0; i < ETH_ALEN; i++) {
531 mask[i] |=
532 iface->conf->bss[j]->bssid[i] ^
533 hapd->own_addr[i];
534 }
535 }
536
537 if (!auto_addr)
538 goto skip_mask_ext;
539
540 for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
541 ;
542 j = 0;
543 if (i < ETH_ALEN) {
544 j = (5 - i) * 8;
545
546 while (mask[i] != 0) {
547 mask[i] >>= 1;
548 j++;
549 }
550 }
551
552 if (bits < j)
553 bits = j;
554
555 if (bits > 40) {
556 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
557 bits);
558 return -1;
559 }
560
561 os_memset(mask, 0xff, ETH_ALEN);
562 j = bits / 8;
563 for (i = 5; i > 5 - j; i--)
564 mask[i] = 0;
565 j = bits % 8;
566 while (j--)
567 mask[i] <<= 1;
568
569 skip_mask_ext:
570 wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
571 (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
572
573 if (!auto_addr)
574 return 0;
575
576 for (i = 0; i < ETH_ALEN; i++) {
577 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
578 wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
579 " for start address " MACSTR ".",
580 MAC2STR(mask), MAC2STR(hapd->own_addr));
581 wpa_printf(MSG_ERROR, "Start address must be the "
582 "first address in the block (i.e., addr "
583 "AND mask == addr).");
584 return -1;
585 }
586 }
587
588 return 0;
589 }
590
591
592 static int mac_in_conf(struct hostapd_config *conf, const void *a)
593 {
594 size_t i;
595
596 for (i = 0; i < conf->num_bss; i++) {
597 if (hostapd_mac_comp(conf->bss[i]->bssid, a) == 0) {
598 return 1;
599 }
600 }
601
602 return 0;
603 }
604
605
606 #ifndef CONFIG_NO_RADIUS
607
608 static int hostapd_das_nas_mismatch(struct hostapd_data *hapd,
609 struct radius_das_attrs *attr)
610 {
611 if (attr->nas_identifier &&
612 (!hapd->conf->nas_identifier ||
613 os_strlen(hapd->conf->nas_identifier) !=
614 attr->nas_identifier_len ||
615 os_memcmp(hapd->conf->nas_identifier, attr->nas_identifier,
616 attr->nas_identifier_len) != 0)) {
617 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-Identifier mismatch");
618 return 1;
619 }
620
621 if (attr->nas_ip_addr &&
622 (hapd->conf->own_ip_addr.af != AF_INET ||
623 os_memcmp(&hapd->conf->own_ip_addr.u.v4, attr->nas_ip_addr, 4) !=
624 0)) {
625 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IP-Address mismatch");
626 return 1;
627 }
628
629 #ifdef CONFIG_IPV6
630 if (attr->nas_ipv6_addr &&
631 (hapd->conf->own_ip_addr.af != AF_INET6 ||
632 os_memcmp(&hapd->conf->own_ip_addr.u.v6, attr->nas_ipv6_addr, 16)
633 != 0)) {
634 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IPv6-Address mismatch");
635 return 1;
636 }
637 #endif /* CONFIG_IPV6 */
638
639 return 0;
640 }
641
642
643 static struct sta_info * hostapd_das_find_sta(struct hostapd_data *hapd,
644 struct radius_das_attrs *attr,
645 int *multi)
646 {
647 struct sta_info *selected, *sta;
648 char buf[128];
649 int num_attr = 0;
650 int count;
651
652 *multi = 0;
653
654 for (sta = hapd->sta_list; sta; sta = sta->next)
655 sta->radius_das_match = 1;
656
657 if (attr->sta_addr) {
658 num_attr++;
659 sta = ap_get_sta(hapd, attr->sta_addr);
660 if (!sta) {
661 wpa_printf(MSG_DEBUG,
662 "RADIUS DAS: No Calling-Station-Id match");
663 return NULL;
664 }
665
666 selected = sta;
667 for (sta = hapd->sta_list; sta; sta = sta->next) {
668 if (sta != selected)
669 sta->radius_das_match = 0;
670 }
671 wpa_printf(MSG_DEBUG, "RADIUS DAS: Calling-Station-Id match");
672 }
673
674 if (attr->acct_session_id) {
675 num_attr++;
676 if (attr->acct_session_id_len != 17) {
677 wpa_printf(MSG_DEBUG,
678 "RADIUS DAS: Acct-Session-Id cannot match");
679 return NULL;
680 }
681 count = 0;
682
683 for (sta = hapd->sta_list; sta; sta = sta->next) {
684 if (!sta->radius_das_match)
685 continue;
686 os_snprintf(buf, sizeof(buf), "%08X-%08X",
687 sta->acct_session_id_hi,
688 sta->acct_session_id_lo);
689 if (os_memcmp(attr->acct_session_id, buf, 17) != 0)
690 sta->radius_das_match = 0;
691 else
692 count++;
693 }
694
695 if (count == 0) {
696 wpa_printf(MSG_DEBUG,
697 "RADIUS DAS: No matches remaining after Acct-Session-Id check");
698 return NULL;
699 }
700 wpa_printf(MSG_DEBUG, "RADIUS DAS: Acct-Session-Id match");
701 }
702
703 if (attr->acct_multi_session_id) {
704 num_attr++;
705 if (attr->acct_multi_session_id_len != 17) {
706 wpa_printf(MSG_DEBUG,
707 "RADIUS DAS: Acct-Multi-Session-Id cannot match");
708 return NULL;
709 }
710 count = 0;
711
712 for (sta = hapd->sta_list; sta; sta = sta->next) {
713 if (!sta->radius_das_match)
714 continue;
715 if (!sta->eapol_sm ||
716 !sta->eapol_sm->acct_multi_session_id_hi) {
717 sta->radius_das_match = 0;
718 continue;
719 }
720 os_snprintf(buf, sizeof(buf), "%08X+%08X",
721 sta->eapol_sm->acct_multi_session_id_hi,
722 sta->eapol_sm->acct_multi_session_id_lo);
723 if (os_memcmp(attr->acct_multi_session_id, buf, 17) !=
724 0)
725 sta->radius_das_match = 0;
726 else
727 count++;
728 }
729
730 if (count == 0) {
731 wpa_printf(MSG_DEBUG,
732 "RADIUS DAS: No matches remaining after Acct-Multi-Session-Id check");
733 return NULL;
734 }
735 wpa_printf(MSG_DEBUG,
736 "RADIUS DAS: Acct-Multi-Session-Id match");
737 }
738
739 if (attr->cui) {
740 num_attr++;
741 count = 0;
742
743 for (sta = hapd->sta_list; sta; sta = sta->next) {
744 struct wpabuf *cui;
745
746 if (!sta->radius_das_match)
747 continue;
748 cui = ieee802_1x_get_radius_cui(sta->eapol_sm);
749 if (!cui || wpabuf_len(cui) != attr->cui_len ||
750 os_memcmp(wpabuf_head(cui), attr->cui,
751 attr->cui_len) != 0)
752 sta->radius_das_match = 0;
753 else
754 count++;
755 }
756
757 if (count == 0) {
758 wpa_printf(MSG_DEBUG,
759 "RADIUS DAS: No matches remaining after Chargeable-User-Identity check");
760 return NULL;
761 }
762 wpa_printf(MSG_DEBUG,
763 "RADIUS DAS: Chargeable-User-Identity match");
764 }
765
766 if (attr->user_name) {
767 num_attr++;
768 count = 0;
769
770 for (sta = hapd->sta_list; sta; sta = sta->next) {
771 u8 *identity;
772 size_t identity_len;
773
774 if (!sta->radius_das_match)
775 continue;
776 identity = ieee802_1x_get_identity(sta->eapol_sm,
777 &identity_len);
778 if (!identity ||
779 identity_len != attr->user_name_len ||
780 os_memcmp(identity, attr->user_name, identity_len)
781 != 0)
782 sta->radius_das_match = 0;
783 else
784 count++;
785 }
786
787 if (count == 0) {
788 wpa_printf(MSG_DEBUG,
789 "RADIUS DAS: No matches remaining after User-Name check");
790 return NULL;
791 }
792 wpa_printf(MSG_DEBUG,
793 "RADIUS DAS: User-Name match");
794 }
795
796 if (num_attr == 0) {
797 /*
798 * In theory, we could match all current associations, but it
799 * seems safer to just reject requests that do not include any
800 * session identification attributes.
801 */
802 wpa_printf(MSG_DEBUG,
803 "RADIUS DAS: No session identification attributes included");
804 return NULL;
805 }
806
807 selected = NULL;
808 for (sta = hapd->sta_list; sta; sta = sta->next) {
809 if (sta->radius_das_match) {
810 if (selected) {
811 *multi = 1;
812 return NULL;
813 }
814 selected = sta;
815 }
816 }
817
818 return selected;
819 }
820
821
822 static int hostapd_das_disconnect_pmksa(struct hostapd_data *hapd,
823 struct radius_das_attrs *attr)
824 {
825 if (!hapd->wpa_auth)
826 return -1;
827 return wpa_auth_radius_das_disconnect_pmksa(hapd->wpa_auth, attr);
828 }
829
830
831 static enum radius_das_res
832 hostapd_das_disconnect(void *ctx, struct radius_das_attrs *attr)
833 {
834 struct hostapd_data *hapd = ctx;
835 struct sta_info *sta;
836 int multi;
837
838 if (hostapd_das_nas_mismatch(hapd, attr))
839 return RADIUS_DAS_NAS_MISMATCH;
840
841 sta = hostapd_das_find_sta(hapd, attr, &multi);
842 if (sta == NULL) {
843 if (multi) {
844 wpa_printf(MSG_DEBUG,
845 "RADIUS DAS: Multiple sessions match - not supported");
846 return RADIUS_DAS_MULTI_SESSION_MATCH;
847 }
848 if (hostapd_das_disconnect_pmksa(hapd, attr) == 0) {
849 wpa_printf(MSG_DEBUG,
850 "RADIUS DAS: PMKSA cache entry matched");
851 return RADIUS_DAS_SUCCESS;
852 }
853 wpa_printf(MSG_DEBUG, "RADIUS DAS: No matching session found");
854 return RADIUS_DAS_SESSION_NOT_FOUND;
855 }
856
857 wpa_printf(MSG_DEBUG, "RADIUS DAS: Found a matching session " MACSTR
858 " - disconnecting", MAC2STR(sta->addr));
859 wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
860
861 hostapd_drv_sta_deauth(hapd, sta->addr,
862 WLAN_REASON_PREV_AUTH_NOT_VALID);
863 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_PREV_AUTH_NOT_VALID);
864
865 return RADIUS_DAS_SUCCESS;
866 }
867
868 #endif /* CONFIG_NO_RADIUS */
869
870
871 /**
872 * hostapd_setup_bss - Per-BSS setup (initialization)
873 * @hapd: Pointer to BSS data
874 * @first: Whether this BSS is the first BSS of an interface; -1 = not first,
875 * but interface may exist
876 *
877 * This function is used to initialize all per-BSS data structures and
878 * resources. This gets called in a loop for each BSS when an interface is
879 * initialized. Most of the modules that are initialized here will be
880 * deinitialized in hostapd_cleanup().
881 */
882 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
883 {
884 struct hostapd_bss_config *conf = hapd->conf;
885 u8 ssid[SSID_MAX_LEN + 1];
886 int ssid_len, set_ssid;
887 char force_ifname[IFNAMSIZ];
888 u8 if_addr[ETH_ALEN];
889 int flush_old_stations = 1;
890
891 wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s), first=%d)",
892 __func__, hapd, conf->iface, first);
893
894 #ifdef EAP_SERVER_TNC
895 if (conf->tnc && tncs_global_init() < 0) {
896 wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
897 return -1;
898 }
899 #endif /* EAP_SERVER_TNC */
900
901 if (hapd->started) {
902 wpa_printf(MSG_ERROR, "%s: Interface %s was already started",
903 __func__, conf->iface);
904 return -1;
905 }
906 hapd->started = 1;
907
908 if (!first || first == -1) {
909 if (hostapd_mac_comp_empty(conf->bssid) == 0) {
910 /* Allocate the next available BSSID. */
911 do {
912 inc_byte_array(hapd->own_addr, ETH_ALEN);
913 } while (mac_in_conf(hapd->iconf, hapd->own_addr));
914 } else {
915 /* Allocate the configured BSSID. */
916 os_memcpy(hapd->own_addr, conf->bssid, ETH_ALEN);
917
918 if (hostapd_mac_comp(hapd->own_addr,
919 hapd->iface->bss[0]->own_addr) ==
920 0) {
921 wpa_printf(MSG_ERROR, "BSS '%s' may not have "
922 "BSSID set to the MAC address of "
923 "the radio", conf->iface);
924 return -1;
925 }
926 }
927
928 hapd->interface_added = 1;
929 if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS,
930 conf->iface, hapd->own_addr, hapd,
931 &hapd->drv_priv, force_ifname, if_addr,
932 conf->bridge[0] ? conf->bridge : NULL,
933 first == -1)) {
934 wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
935 MACSTR ")", MAC2STR(hapd->own_addr));
936 hapd->interface_added = 0;
937 return -1;
938 }
939 }
940
941 if (conf->wmm_enabled < 0)
942 conf->wmm_enabled = hapd->iconf->ieee80211n;
943
944 #ifdef CONFIG_MESH
945 if (hapd->iface->mconf == NULL)
946 flush_old_stations = 0;
947 #endif /* CONFIG_MESH */
948
949 if (flush_old_stations)
950 hostapd_flush_old_stations(hapd,
951 WLAN_REASON_PREV_AUTH_NOT_VALID);
952 hostapd_set_privacy(hapd, 0);
953
954 hostapd_broadcast_wep_clear(hapd);
955 if (hostapd_setup_encryption(conf->iface, hapd))
956 return -1;
957
958 /*
959 * Fetch the SSID from the system and use it or,
960 * if one was specified in the config file, verify they
961 * match.
962 */
963 ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
964 if (ssid_len < 0) {
965 wpa_printf(MSG_ERROR, "Could not read SSID from system");
966 return -1;
967 }
968 if (conf->ssid.ssid_set) {
969 /*
970 * If SSID is specified in the config file and it differs
971 * from what is being used then force installation of the
972 * new SSID.
973 */
974 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
975 os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
976 } else {
977 /*
978 * No SSID in the config file; just use the one we got
979 * from the system.
980 */
981 set_ssid = 0;
982 conf->ssid.ssid_len = ssid_len;
983 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
984 }
985
986 if (!hostapd_drv_none(hapd)) {
987 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
988 " and ssid \"%s\"",
989 conf->iface, MAC2STR(hapd->own_addr),
990 wpa_ssid_txt(conf->ssid.ssid, conf->ssid.ssid_len));
991 }
992
993 if (hostapd_setup_wpa_psk(conf)) {
994 wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
995 return -1;
996 }
997
998 /* Set SSID for the kernel driver (to be used in beacon and probe
999 * response frames) */
1000 if (set_ssid && hostapd_set_ssid(hapd, conf->ssid.ssid,
1001 conf->ssid.ssid_len)) {
1002 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
1003 return -1;
1004 }
1005
1006 if (wpa_debug_level <= MSG_MSGDUMP)
1007 conf->radius->msg_dumps = 1;
1008 #ifndef CONFIG_NO_RADIUS
1009 hapd->radius = radius_client_init(hapd, conf->radius);
1010 if (hapd->radius == NULL) {
1011 wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
1012 return -1;
1013 }
1014
1015 if (conf->radius_das_port) {
1016 struct radius_das_conf das_conf;
1017 os_memset(&das_conf, 0, sizeof(das_conf));
1018 das_conf.port = conf->radius_das_port;
1019 das_conf.shared_secret = conf->radius_das_shared_secret;
1020 das_conf.shared_secret_len =
1021 conf->radius_das_shared_secret_len;
1022 das_conf.client_addr = &conf->radius_das_client_addr;
1023 das_conf.time_window = conf->radius_das_time_window;
1024 das_conf.require_event_timestamp =
1025 conf->radius_das_require_event_timestamp;
1026 das_conf.ctx = hapd;
1027 das_conf.disconnect = hostapd_das_disconnect;
1028 hapd->radius_das = radius_das_init(&das_conf);
1029 if (hapd->radius_das == NULL) {
1030 wpa_printf(MSG_ERROR, "RADIUS DAS initialization "
1031 "failed.");
1032 return -1;
1033 }
1034 }
1035 #endif /* CONFIG_NO_RADIUS */
1036
1037 if (hostapd_acl_init(hapd)) {
1038 wpa_printf(MSG_ERROR, "ACL initialization failed.");
1039 return -1;
1040 }
1041 if (hostapd_init_wps(hapd, conf))
1042 return -1;
1043
1044 if (authsrv_init(hapd) < 0)
1045 return -1;
1046
1047 if (ieee802_1x_init(hapd)) {
1048 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
1049 return -1;
1050 }
1051
1052 if ((conf->wpa || conf->osen) && hostapd_setup_wpa(hapd))
1053 return -1;
1054
1055 if (accounting_init(hapd)) {
1056 wpa_printf(MSG_ERROR, "Accounting initialization failed.");
1057 return -1;
1058 }
1059
1060 if (conf->ieee802_11f &&
1061 (hapd->iapp = iapp_init(hapd, conf->iapp_iface)) == NULL) {
1062 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
1063 "failed.");
1064 return -1;
1065 }
1066
1067 #ifdef CONFIG_INTERWORKING
1068 if (gas_serv_init(hapd)) {
1069 wpa_printf(MSG_ERROR, "GAS server initialization failed");
1070 return -1;
1071 }
1072
1073 if (conf->qos_map_set_len &&
1074 hostapd_drv_set_qos_map(hapd, conf->qos_map_set,
1075 conf->qos_map_set_len)) {
1076 wpa_printf(MSG_ERROR, "Failed to initialize QoS Map");
1077 return -1;
1078 }
1079 #endif /* CONFIG_INTERWORKING */
1080
1081 if (conf->bss_load_update_period && bss_load_update_init(hapd)) {
1082 wpa_printf(MSG_ERROR, "BSS Load initialization failed");
1083 return -1;
1084 }
1085
1086 if (conf->proxy_arp) {
1087 if (x_snoop_init(hapd)) {
1088 wpa_printf(MSG_ERROR,
1089 "Generic snooping infrastructure initialization failed");
1090 return -1;
1091 }
1092
1093 if (dhcp_snoop_init(hapd)) {
1094 wpa_printf(MSG_ERROR,
1095 "DHCP snooping initialization failed");
1096 return -1;
1097 }
1098
1099 if (ndisc_snoop_init(hapd)) {
1100 wpa_printf(MSG_ERROR,
1101 "Neighbor Discovery snooping initialization failed");
1102 return -1;
1103 }
1104 }
1105
1106 if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
1107 wpa_printf(MSG_ERROR, "VLAN initialization failed.");
1108 return -1;
1109 }
1110
1111 if (!conf->start_disabled && ieee802_11_set_beacon(hapd) < 0)
1112 return -1;
1113
1114 if (hapd->wpa_auth && wpa_init_keys(hapd->wpa_auth) < 0)
1115 return -1;
1116
1117 if (hapd->driver && hapd->driver->set_operstate)
1118 hapd->driver->set_operstate(hapd->drv_priv, 1);
1119
1120 return 0;
1121 }
1122
1123
1124 static void hostapd_tx_queue_params(struct hostapd_iface *iface)
1125 {
1126 struct hostapd_data *hapd = iface->bss[0];
1127 int i;
1128 struct hostapd_tx_queue_params *p;
1129
1130 #ifdef CONFIG_MESH
1131 if (iface->mconf == NULL)
1132 return;
1133 #endif /* CONFIG_MESH */
1134
1135 for (i = 0; i < NUM_TX_QUEUES; i++) {
1136 p = &iface->conf->tx_queue[i];
1137
1138 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
1139 p->cwmax, p->burst)) {
1140 wpa_printf(MSG_DEBUG, "Failed to set TX queue "
1141 "parameters for queue %d.", i);
1142 /* Continue anyway */
1143 }
1144 }
1145 }
1146
1147
1148 static int hostapd_set_acl_list(struct hostapd_data *hapd,
1149 struct mac_acl_entry *mac_acl,
1150 int n_entries, u8 accept_acl)
1151 {
1152 struct hostapd_acl_params *acl_params;
1153 int i, err;
1154
1155 acl_params = os_zalloc(sizeof(*acl_params) +
1156 (n_entries * sizeof(acl_params->mac_acl[0])));
1157 if (!acl_params)
1158 return -ENOMEM;
1159
1160 for (i = 0; i < n_entries; i++)
1161 os_memcpy(acl_params->mac_acl[i].addr, mac_acl[i].addr,
1162 ETH_ALEN);
1163
1164 acl_params->acl_policy = accept_acl;
1165 acl_params->num_mac_acl = n_entries;
1166
1167 err = hostapd_drv_set_acl(hapd, acl_params);
1168
1169 os_free(acl_params);
1170
1171 return err;
1172 }
1173
1174
1175 static void hostapd_set_acl(struct hostapd_data *hapd)
1176 {
1177 struct hostapd_config *conf = hapd->iconf;
1178 int err;
1179 u8 accept_acl;
1180
1181 if (hapd->iface->drv_max_acl_mac_addrs == 0)
1182 return;
1183
1184 if (conf->bss[0]->macaddr_acl == DENY_UNLESS_ACCEPTED) {
1185 accept_acl = 1;
1186 err = hostapd_set_acl_list(hapd, conf->bss[0]->accept_mac,
1187 conf->bss[0]->num_accept_mac,
1188 accept_acl);
1189 if (err) {
1190 wpa_printf(MSG_DEBUG, "Failed to set accept acl");
1191 return;
1192 }
1193 } else if (conf->bss[0]->macaddr_acl == ACCEPT_UNLESS_DENIED) {
1194 accept_acl = 0;
1195 err = hostapd_set_acl_list(hapd, conf->bss[0]->deny_mac,
1196 conf->bss[0]->num_deny_mac,
1197 accept_acl);
1198 if (err) {
1199 wpa_printf(MSG_DEBUG, "Failed to set deny acl");
1200 return;
1201 }
1202 }
1203 }
1204
1205
1206 static int start_ctrl_iface_bss(struct hostapd_data *hapd)
1207 {
1208 if (!hapd->iface->interfaces ||
1209 !hapd->iface->interfaces->ctrl_iface_init)
1210 return 0;
1211
1212 if (hapd->iface->interfaces->ctrl_iface_init(hapd)) {
1213 wpa_printf(MSG_ERROR,
1214 "Failed to setup control interface for %s",
1215 hapd->conf->iface);
1216 return -1;
1217 }
1218
1219 return 0;
1220 }
1221
1222
1223 static int start_ctrl_iface(struct hostapd_iface *iface)
1224 {
1225 size_t i;
1226
1227 if (!iface->interfaces || !iface->interfaces->ctrl_iface_init)
1228 return 0;
1229
1230 for (i = 0; i < iface->num_bss; i++) {
1231 struct hostapd_data *hapd = iface->bss[i];
1232 if (iface->interfaces->ctrl_iface_init(hapd)) {
1233 wpa_printf(MSG_ERROR,
1234 "Failed to setup control interface for %s",
1235 hapd->conf->iface);
1236 return -1;
1237 }
1238 }
1239
1240 return 0;
1241 }
1242
1243
1244 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx)
1245 {
1246 struct hostapd_iface *iface = eloop_ctx;
1247
1248 if (!iface->wait_channel_update) {
1249 wpa_printf(MSG_INFO, "Channel list update timeout, but interface was not waiting for it");
1250 return;
1251 }
1252
1253 /*
1254 * It is possible that the existing channel list is acceptable, so try
1255 * to proceed.
1256 */
1257 wpa_printf(MSG_DEBUG, "Channel list update timeout - try to continue anyway");
1258 setup_interface2(iface);
1259 }
1260
1261
1262 void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator)
1263 {
1264 if (!iface->wait_channel_update || initiator != REGDOM_SET_BY_USER)
1265 return;
1266
1267 wpa_printf(MSG_DEBUG, "Channel list updated - continue setup");
1268 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
1269 setup_interface2(iface);
1270 }
1271
1272
1273 static int setup_interface(struct hostapd_iface *iface)
1274 {
1275 struct hostapd_data *hapd = iface->bss[0];
1276 size_t i;
1277
1278 /*
1279 * It is possible that setup_interface() is called after the interface
1280 * was disabled etc., in which case driver_ap_teardown is possibly set
1281 * to 1. Clear it here so any other key/station deletion, which is not
1282 * part of a teardown flow, would also call the relevant driver
1283 * callbacks.
1284 */
1285 iface->driver_ap_teardown = 0;
1286
1287 if (!iface->phy[0]) {
1288 const char *phy = hostapd_drv_get_radio_name(hapd);
1289 if (phy) {
1290 wpa_printf(MSG_DEBUG, "phy: %s", phy);
1291 os_strlcpy(iface->phy, phy, sizeof(iface->phy));
1292 }
1293 }
1294
1295 /*
1296 * Make sure that all BSSes get configured with a pointer to the same
1297 * driver interface.
1298 */
1299 for (i = 1; i < iface->num_bss; i++) {
1300 iface->bss[i]->driver = hapd->driver;
1301 iface->bss[i]->drv_priv = hapd->drv_priv;
1302 }
1303
1304 if (hostapd_validate_bssid_configuration(iface))
1305 return -1;
1306
1307 /*
1308 * Initialize control interfaces early to allow external monitoring of
1309 * channel setup operations that may take considerable amount of time
1310 * especially for DFS cases.
1311 */
1312 if (start_ctrl_iface(iface))
1313 return -1;
1314
1315 if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1316 char country[4], previous_country[4];
1317
1318 hostapd_set_state(iface, HAPD_IFACE_COUNTRY_UPDATE);
1319 if (hostapd_get_country(hapd, previous_country) < 0)
1320 previous_country[0] = '\0';
1321
1322 os_memcpy(country, hapd->iconf->country, 3);
1323 country[3] = '\0';
1324 if (hostapd_set_country(hapd, country) < 0) {
1325 wpa_printf(MSG_ERROR, "Failed to set country code");
1326 return -1;
1327 }
1328
1329 wpa_printf(MSG_DEBUG, "Previous country code %s, new country code %s",
1330 previous_country, country);
1331
1332 if (os_strncmp(previous_country, country, 2) != 0) {
1333 wpa_printf(MSG_DEBUG, "Continue interface setup after channel list update");
1334 iface->wait_channel_update = 1;
1335 eloop_register_timeout(5, 0,
1336 channel_list_update_timeout,
1337 iface, NULL);
1338 return 0;
1339 }
1340 }
1341
1342 return setup_interface2(iface);
1343 }
1344
1345
1346 static int setup_interface2(struct hostapd_iface *iface)
1347 {
1348 iface->wait_channel_update = 0;
1349
1350 if (hostapd_get_hw_features(iface)) {
1351 /* Not all drivers support this yet, so continue without hw
1352 * feature data. */
1353 } else {
1354 int ret = hostapd_select_hw_mode(iface);
1355 if (ret < 0) {
1356 wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1357 "channel. (%d)", ret);
1358 goto fail;
1359 }
1360 if (ret == 1) {
1361 wpa_printf(MSG_DEBUG, "Interface initialization will be completed in a callback (ACS)");
1362 return 0;
1363 }
1364 ret = hostapd_check_ht_capab(iface);
1365 if (ret < 0)
1366 goto fail;
1367 if (ret == 1) {
1368 wpa_printf(MSG_DEBUG, "Interface initialization will "
1369 "be completed in a callback");
1370 return 0;
1371 }
1372
1373 if (iface->conf->ieee80211h)
1374 wpa_printf(MSG_DEBUG, "DFS support is enabled");
1375 }
1376 return hostapd_setup_interface_complete(iface, 0);
1377
1378 fail:
1379 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1380 wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1381 if (iface->interfaces && iface->interfaces->terminate_on_error)
1382 eloop_terminate();
1383 return -1;
1384 }
1385
1386
1387 #ifdef CONFIG_FST
1388
1389 static const u8 * fst_hostapd_get_bssid_cb(void *ctx)
1390 {
1391 struct hostapd_data *hapd = ctx;
1392
1393 return hapd->own_addr;
1394 }
1395
1396
1397 static void fst_hostapd_get_channel_info_cb(void *ctx,
1398 enum hostapd_hw_mode *hw_mode,
1399 u8 *channel)
1400 {
1401 struct hostapd_data *hapd = ctx;
1402
1403 *hw_mode = ieee80211_freq_to_chan(hapd->iface->freq, channel);
1404 }
1405
1406
1407 static void fst_hostapd_set_ies_cb(void *ctx, const struct wpabuf *fst_ies)
1408 {
1409 struct hostapd_data *hapd = ctx;
1410
1411 if (hapd->iface->fst_ies != fst_ies) {
1412 hapd->iface->fst_ies = fst_ies;
1413 if (ieee802_11_set_beacon(hapd))
1414 wpa_printf(MSG_WARNING, "FST: Cannot set beacon");
1415 }
1416 }
1417
1418
1419 static int fst_hostapd_send_action_cb(void *ctx, const u8 *da,
1420 struct wpabuf *buf)
1421 {
1422 struct hostapd_data *hapd = ctx;
1423
1424 return hostapd_drv_send_action(hapd, hapd->iface->freq, 0, da,
1425 wpabuf_head(buf), wpabuf_len(buf));
1426 }
1427
1428
1429 static const struct wpabuf * fst_hostapd_get_mb_ie_cb(void *ctx, const u8 *addr)
1430 {
1431 struct hostapd_data *hapd = ctx;
1432 struct sta_info *sta = ap_get_sta(hapd, addr);
1433
1434 return sta ? sta->mb_ies : NULL;
1435 }
1436
1437
1438 static void fst_hostapd_update_mb_ie_cb(void *ctx, const u8 *addr,
1439 const u8 *buf, size_t size)
1440 {
1441 struct hostapd_data *hapd = ctx;
1442 struct sta_info *sta = ap_get_sta(hapd, addr);
1443
1444 if (sta) {
1445 struct mb_ies_info info;
1446
1447 if (!mb_ies_info_by_ies(&info, buf, size)) {
1448 wpabuf_free(sta->mb_ies);
1449 sta->mb_ies = mb_ies_by_info(&info);
1450 }
1451 }
1452 }
1453
1454
1455 static const u8 * fst_hostapd_get_sta(struct fst_get_peer_ctx **get_ctx,
1456 Boolean mb_only)
1457 {
1458 struct sta_info *s = (struct sta_info *) *get_ctx;
1459
1460 if (mb_only) {
1461 for (; s && !s->mb_ies; s = s->next)
1462 ;
1463 }
1464
1465 if (s) {
1466 *get_ctx = (struct fst_get_peer_ctx *) s->next;
1467
1468 return s->addr;
1469 }
1470
1471 *get_ctx = NULL;
1472 return NULL;
1473 }
1474
1475
1476 static const u8 * fst_hostapd_get_peer_first(void *ctx,
1477 struct fst_get_peer_ctx **get_ctx,
1478 Boolean mb_only)
1479 {
1480 struct hostapd_data *hapd = ctx;
1481
1482 *get_ctx = (struct fst_get_peer_ctx *) hapd->sta_list;
1483
1484 return fst_hostapd_get_sta(get_ctx, mb_only);
1485 }
1486
1487
1488 static const u8 * fst_hostapd_get_peer_next(void *ctx,
1489 struct fst_get_peer_ctx **get_ctx,
1490 Boolean mb_only)
1491 {
1492 return fst_hostapd_get_sta(get_ctx, mb_only);
1493 }
1494
1495
1496 void fst_hostapd_fill_iface_obj(struct hostapd_data *hapd,
1497 struct fst_wpa_obj *iface_obj)
1498 {
1499 iface_obj->ctx = hapd;
1500 iface_obj->get_bssid = fst_hostapd_get_bssid_cb;
1501 iface_obj->get_channel_info = fst_hostapd_get_channel_info_cb;
1502 iface_obj->set_ies = fst_hostapd_set_ies_cb;
1503 iface_obj->send_action = fst_hostapd_send_action_cb;
1504 iface_obj->get_mb_ie = fst_hostapd_get_mb_ie_cb;
1505 iface_obj->update_mb_ie = fst_hostapd_update_mb_ie_cb;
1506 iface_obj->get_peer_first = fst_hostapd_get_peer_first;
1507 iface_obj->get_peer_next = fst_hostapd_get_peer_next;
1508 }
1509
1510 #endif /* CONFIG_FST */
1511
1512
1513 static int hostapd_setup_interface_complete_sync(struct hostapd_iface *iface,
1514 int err)
1515 {
1516 struct hostapd_data *hapd = iface->bss[0];
1517 size_t j;
1518 u8 *prev_addr;
1519 int delay_apply_cfg = 0;
1520 int res_dfs_offload = 0;
1521
1522 if (err)
1523 goto fail;
1524
1525 wpa_printf(MSG_DEBUG, "Completing interface initialization");
1526 if (iface->conf->channel) {
1527 #ifdef NEED_AP_MLME
1528 int res;
1529 #endif /* NEED_AP_MLME */
1530
1531 iface->freq = hostapd_hw_get_freq(hapd, iface->conf->channel);
1532 wpa_printf(MSG_DEBUG, "Mode: %s Channel: %d "
1533 "Frequency: %d MHz",
1534 hostapd_hw_mode_txt(iface->conf->hw_mode),
1535 iface->conf->channel, iface->freq);
1536
1537 #ifdef NEED_AP_MLME
1538 /* Handle DFS only if it is not offloaded to the driver */
1539 if (!(iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)) {
1540 /* Check DFS */
1541 res = hostapd_handle_dfs(iface);
1542 if (res <= 0) {
1543 if (res < 0)
1544 goto fail;
1545 return res;
1546 }
1547 } else {
1548 /* If DFS is offloaded to the driver */
1549 res_dfs_offload = hostapd_handle_dfs_offload(iface);
1550 if (res_dfs_offload <= 0) {
1551 if (res_dfs_offload < 0)
1552 goto fail;
1553 } else {
1554 wpa_printf(MSG_DEBUG,
1555 "Proceed with AP/channel setup");
1556 /*
1557 * If this is a DFS channel, move to completing
1558 * AP setup.
1559 */
1560 if (res_dfs_offload == 1)
1561 goto dfs_offload;
1562 /* Otherwise fall through. */
1563 }
1564 }
1565 #endif /* NEED_AP_MLME */
1566
1567 #ifdef CONFIG_MESH
1568 if (iface->mconf != NULL) {
1569 wpa_printf(MSG_DEBUG,
1570 "%s: Mesh configuration will be applied while joining the mesh network",
1571 iface->bss[0]->conf->iface);
1572 delay_apply_cfg = 1;
1573 }
1574 #endif /* CONFIG_MESH */
1575
1576 if (!delay_apply_cfg &&
1577 hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq,
1578 hapd->iconf->channel,
1579 hapd->iconf->ieee80211n,
1580 hapd->iconf->ieee80211ac,
1581 hapd->iconf->secondary_channel,
1582 hapd->iconf->vht_oper_chwidth,
1583 hapd->iconf->vht_oper_centr_freq_seg0_idx,
1584 hapd->iconf->vht_oper_centr_freq_seg1_idx)) {
1585 wpa_printf(MSG_ERROR, "Could not set channel for "
1586 "kernel driver");
1587 goto fail;
1588 }
1589 }
1590
1591 if (iface->current_mode) {
1592 if (hostapd_prepare_rates(iface, iface->current_mode)) {
1593 wpa_printf(MSG_ERROR, "Failed to prepare rates "
1594 "table.");
1595 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1596 HOSTAPD_LEVEL_WARNING,
1597 "Failed to prepare rates table.");
1598 goto fail;
1599 }
1600 }
1601
1602 if (hapd->iconf->rts_threshold > -1 &&
1603 hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
1604 wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
1605 "kernel driver");
1606 goto fail;
1607 }
1608
1609 if (hapd->iconf->fragm_threshold > -1 &&
1610 hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
1611 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
1612 "for kernel driver");
1613 goto fail;
1614 }
1615
1616 prev_addr = hapd->own_addr;
1617
1618 for (j = 0; j < iface->num_bss; j++) {
1619 hapd = iface->bss[j];
1620 if (j)
1621 os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
1622 if (hostapd_setup_bss(hapd, j == 0)) {
1623 do {
1624 hapd = iface->bss[j];
1625 hostapd_bss_deinit_no_free(hapd);
1626 hostapd_free_hapd_data(hapd);
1627 } while (j-- > 0);
1628 goto fail;
1629 }
1630 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
1631 prev_addr = hapd->own_addr;
1632 }
1633 hapd = iface->bss[0];
1634
1635 hostapd_tx_queue_params(iface);
1636
1637 ap_list_init(iface);
1638 dl_list_init(&iface->sta_seen);
1639
1640 hostapd_set_acl(hapd);
1641
1642 if (hostapd_driver_commit(hapd) < 0) {
1643 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
1644 "configuration", __func__);
1645 goto fail;
1646 }
1647
1648 /*
1649 * WPS UPnP module can be initialized only when the "upnp_iface" is up.
1650 * If "interface" and "upnp_iface" are the same (e.g., non-bridge
1651 * mode), the interface is up only after driver_commit, so initialize
1652 * WPS after driver_commit.
1653 */
1654 for (j = 0; j < iface->num_bss; j++) {
1655 if (hostapd_init_wps_complete(iface->bss[j]))
1656 goto fail;
1657 }
1658
1659 if ((iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
1660 !res_dfs_offload) {
1661 /*
1662 * If freq is DFS, and DFS is offloaded to the driver, then wait
1663 * for CAC to complete.
1664 */
1665 wpa_printf(MSG_DEBUG, "%s: Wait for CAC to complete", __func__);
1666 return res_dfs_offload;
1667 }
1668
1669 #ifdef NEED_AP_MLME
1670 dfs_offload:
1671 #endif /* NEED_AP_MLME */
1672
1673 #ifdef CONFIG_FST
1674 if (hapd->iconf->fst_cfg.group_id[0]) {
1675 struct fst_wpa_obj iface_obj;
1676
1677 fst_hostapd_fill_iface_obj(hapd, &iface_obj);
1678 iface->fst = fst_attach(hapd->conf->iface, hapd->own_addr,
1679 &iface_obj, &hapd->iconf->fst_cfg);
1680 if (!iface->fst) {
1681 wpa_printf(MSG_ERROR, "Could not attach to FST %s",
1682 hapd->iconf->fst_cfg.group_id);
1683 goto fail;
1684 }
1685 }
1686 #endif /* CONFIG_FST */
1687
1688 hostapd_set_state(iface, HAPD_IFACE_ENABLED);
1689 wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_ENABLED);
1690 if (hapd->setup_complete_cb)
1691 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
1692
1693 wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
1694 iface->bss[0]->conf->iface);
1695 if (iface->interfaces && iface->interfaces->terminate_on_error > 0)
1696 iface->interfaces->terminate_on_error--;
1697
1698 return 0;
1699
1700 fail:
1701 wpa_printf(MSG_ERROR, "Interface initialization failed");
1702 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1703 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1704 #ifdef CONFIG_FST
1705 if (iface->fst) {
1706 fst_detach(iface->fst);
1707 iface->fst = NULL;
1708 }
1709 #endif /* CONFIG_FST */
1710 if (iface->interfaces && iface->interfaces->terminate_on_error)
1711 eloop_terminate();
1712 return -1;
1713 }
1714
1715
1716 /**
1717 * hostapd_setup_interface_complete - Complete interface setup
1718 *
1719 * This function is called when previous steps in the interface setup has been
1720 * completed. This can also start operations, e.g., DFS, that will require
1721 * additional processing before interface is ready to be enabled. Such
1722 * operations will call this function from eloop callbacks when finished.
1723 */
1724 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err)
1725 {
1726 struct hapd_interfaces *interfaces = iface->interfaces;
1727 struct hostapd_data *hapd = iface->bss[0];
1728 unsigned int i;
1729 int not_ready_in_sync_ifaces = 0;
1730
1731 if (!iface->need_to_start_in_sync)
1732 return hostapd_setup_interface_complete_sync(iface, err);
1733
1734 if (err) {
1735 wpa_printf(MSG_ERROR, "Interface initialization failed");
1736 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1737 iface->need_to_start_in_sync = 0;
1738 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1739 if (interfaces && interfaces->terminate_on_error)
1740 eloop_terminate();
1741 return -1;
1742 }
1743
1744 if (iface->ready_to_start_in_sync) {
1745 /* Already in ready and waiting. should never happpen */
1746 return 0;
1747 }
1748
1749 for (i = 0; i < interfaces->count; i++) {
1750 if (interfaces->iface[i]->need_to_start_in_sync &&
1751 !interfaces->iface[i]->ready_to_start_in_sync)
1752 not_ready_in_sync_ifaces++;
1753 }
1754
1755 /*
1756 * Check if this is the last interface, if yes then start all the other
1757 * waiting interfaces. If not, add this interface to the waiting list.
1758 */
1759 if (not_ready_in_sync_ifaces > 1 && iface->state == HAPD_IFACE_DFS) {
1760 /*
1761 * If this interface went through CAC, do not synchronize, just
1762 * start immediately.
1763 */
1764 iface->need_to_start_in_sync = 0;
1765 wpa_printf(MSG_INFO,
1766 "%s: Finished CAC - bypass sync and start interface",
1767 iface->bss[0]->conf->iface);
1768 return hostapd_setup_interface_complete_sync(iface, err);
1769 }
1770
1771 if (not_ready_in_sync_ifaces > 1) {
1772 /* need to wait as there are other interfaces still coming up */
1773 iface->ready_to_start_in_sync = 1;
1774 wpa_printf(MSG_INFO,
1775 "%s: Interface waiting to sync with other interfaces",
1776 iface->bss[0]->conf->iface);
1777 return 0;
1778 }
1779
1780 wpa_printf(MSG_INFO,
1781 "%s: Last interface to sync - starting all interfaces",
1782 iface->bss[0]->conf->iface);
1783 iface->need_to_start_in_sync = 0;
1784 hostapd_setup_interface_complete_sync(iface, err);
1785 for (i = 0; i < interfaces->count; i++) {
1786 if (interfaces->iface[i]->need_to_start_in_sync &&
1787 interfaces->iface[i]->ready_to_start_in_sync) {
1788 hostapd_setup_interface_complete_sync(
1789 interfaces->iface[i], 0);
1790 /* Only once the interfaces are sync started */
1791 interfaces->iface[i]->need_to_start_in_sync = 0;
1792 }
1793 }
1794
1795 return 0;
1796 }
1797
1798
1799 /**
1800 * hostapd_setup_interface - Setup of an interface
1801 * @iface: Pointer to interface data.
1802 * Returns: 0 on success, -1 on failure
1803 *
1804 * Initializes the driver interface, validates the configuration,
1805 * and sets driver parameters based on the configuration.
1806 * Flushes old stations, sets the channel, encryption,
1807 * beacons, and WDS links based on the configuration.
1808 *
1809 * If interface setup requires more time, e.g., to perform HT co-ex scans, ACS,
1810 * or DFS operations, this function returns 0 before such operations have been
1811 * completed. The pending operations are registered into eloop and will be
1812 * completed from eloop callbacks. Those callbacks end up calling
1813 * hostapd_setup_interface_complete() once setup has been completed.
1814 */
1815 int hostapd_setup_interface(struct hostapd_iface *iface)
1816 {
1817 int ret;
1818
1819 ret = setup_interface(iface);
1820 if (ret) {
1821 wpa_printf(MSG_ERROR, "%s: Unable to setup interface.",
1822 iface->bss[0]->conf->iface);
1823 return -1;
1824 }
1825
1826 return 0;
1827 }
1828
1829
1830 /**
1831 * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
1832 * @hapd_iface: Pointer to interface data
1833 * @conf: Pointer to per-interface configuration
1834 * @bss: Pointer to per-BSS configuration for this BSS
1835 * Returns: Pointer to allocated BSS data
1836 *
1837 * This function is used to allocate per-BSS data structure. This data will be
1838 * freed after hostapd_cleanup() is called for it during interface
1839 * deinitialization.
1840 */
1841 struct hostapd_data *
1842 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
1843 struct hostapd_config *conf,
1844 struct hostapd_bss_config *bss)
1845 {
1846 struct hostapd_data *hapd;
1847
1848 hapd = os_zalloc(sizeof(*hapd));
1849 if (hapd == NULL)
1850 return NULL;
1851
1852 hapd->new_assoc_sta_cb = hostapd_new_assoc_sta;
1853 hapd->iconf = conf;
1854 hapd->conf = bss;
1855 hapd->iface = hapd_iface;
1856 hapd->driver = hapd->iconf->driver;
1857 hapd->ctrl_sock = -1;
1858
1859 return hapd;
1860 }
1861
1862
1863 static void hostapd_bss_deinit(struct hostapd_data *hapd)
1864 {
1865 wpa_printf(MSG_DEBUG, "%s: deinit bss %s", __func__,
1866 hapd->conf->iface);
1867 hostapd_bss_deinit_no_free(hapd);
1868 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1869 hostapd_cleanup(hapd);
1870 }
1871
1872
1873 void hostapd_interface_deinit(struct hostapd_iface *iface)
1874 {
1875 int j;
1876
1877 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1878 if (iface == NULL)
1879 return;
1880
1881 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1882
1883 #ifdef CONFIG_IEEE80211N
1884 #ifdef NEED_AP_MLME
1885 hostapd_stop_setup_timers(iface);
1886 eloop_cancel_timeout(ap_ht2040_timeout, iface, NULL);
1887 #endif /* NEED_AP_MLME */
1888 #endif /* CONFIG_IEEE80211N */
1889 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
1890 iface->wait_channel_update = 0;
1891
1892 #ifdef CONFIG_FST
1893 if (iface->fst) {
1894 fst_detach(iface->fst);
1895 iface->fst = NULL;
1896 }
1897 #endif /* CONFIG_FST */
1898
1899 for (j = iface->num_bss - 1; j >= 0; j--)
1900 hostapd_bss_deinit(iface->bss[j]);
1901 }
1902
1903
1904 void hostapd_interface_free(struct hostapd_iface *iface)
1905 {
1906 size_t j;
1907 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1908 for (j = 0; j < iface->num_bss; j++) {
1909 wpa_printf(MSG_DEBUG, "%s: free hapd %p",
1910 __func__, iface->bss[j]);
1911 os_free(iface->bss[j]);
1912 }
1913 hostapd_cleanup_iface(iface);
1914 }
1915
1916
1917 /**
1918 * hostapd_init - Allocate and initialize per-interface data
1919 * @config_file: Path to the configuration file
1920 * Returns: Pointer to the allocated interface data or %NULL on failure
1921 *
1922 * This function is used to allocate main data structures for per-interface
1923 * data. The allocated data buffer will be freed by calling
1924 * hostapd_cleanup_iface().
1925 */
1926 struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces,
1927 const char *config_file)
1928 {
1929 struct hostapd_iface *hapd_iface = NULL;
1930 struct hostapd_config *conf = NULL;
1931 struct hostapd_data *hapd;
1932 size_t i;
1933
1934 hapd_iface = os_zalloc(sizeof(*hapd_iface));
1935 if (hapd_iface == NULL)
1936 goto fail;
1937
1938 hapd_iface->config_fname = os_strdup(config_file);
1939 if (hapd_iface->config_fname == NULL)
1940 goto fail;
1941
1942 conf = interfaces->config_read_cb(hapd_iface->config_fname);
1943 if (conf == NULL)
1944 goto fail;
1945 hapd_iface->conf = conf;
1946
1947 hapd_iface->num_bss = conf->num_bss;
1948 hapd_iface->bss = os_calloc(conf->num_bss,
1949 sizeof(struct hostapd_data *));
1950 if (hapd_iface->bss == NULL)
1951 goto fail;
1952
1953 for (i = 0; i < conf->num_bss; i++) {
1954 hapd = hapd_iface->bss[i] =
1955 hostapd_alloc_bss_data(hapd_iface, conf,
1956 conf->bss[i]);
1957 if (hapd == NULL)
1958 goto fail;
1959 hapd->msg_ctx = hapd;
1960 }
1961
1962 return hapd_iface;
1963
1964 fail:
1965 wpa_printf(MSG_ERROR, "Failed to set up interface with %s",
1966 config_file);
1967 if (conf)
1968 hostapd_config_free(conf);
1969 if (hapd_iface) {
1970 os_free(hapd_iface->config_fname);
1971 os_free(hapd_iface->bss);
1972 wpa_printf(MSG_DEBUG, "%s: free iface %p",
1973 __func__, hapd_iface);
1974 os_free(hapd_iface);
1975 }
1976 return NULL;
1977 }
1978
1979
1980 static int ifname_in_use(struct hapd_interfaces *interfaces, const char *ifname)
1981 {
1982 size_t i, j;
1983
1984 for (i = 0; i < interfaces->count; i++) {
1985 struct hostapd_iface *iface = interfaces->iface[i];
1986 for (j = 0; j < iface->num_bss; j++) {
1987 struct hostapd_data *hapd = iface->bss[j];
1988 if (os_strcmp(ifname, hapd->conf->iface) == 0)
1989 return 1;
1990 }
1991 }
1992
1993 return 0;
1994 }
1995
1996
1997 /**
1998 * hostapd_interface_init_bss - Read configuration file and init BSS data
1999 *
2000 * This function is used to parse configuration file for a BSS. This BSS is
2001 * added to an existing interface sharing the same radio (if any) or a new
2002 * interface is created if this is the first interface on a radio. This
2003 * allocate memory for the BSS. No actual driver operations are started.
2004 *
2005 * This is similar to hostapd_interface_init(), but for a case where the
2006 * configuration is used to add a single BSS instead of all BSSes for a radio.
2007 */
2008 struct hostapd_iface *
2009 hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy,
2010 const char *config_fname, int debug)
2011 {
2012 struct hostapd_iface *new_iface = NULL, *iface = NULL;
2013 struct hostapd_data *hapd;
2014 int k;
2015 size_t i, bss_idx;
2016
2017 if (!phy || !*phy)
2018 return NULL;
2019
2020 for (i = 0; i < interfaces->count; i++) {
2021 if (os_strcmp(interfaces->iface[i]->phy, phy) == 0) {
2022 iface = interfaces->iface[i];
2023 break;
2024 }
2025 }
2026
2027 wpa_printf(MSG_INFO, "Configuration file: %s (phy %s)%s",
2028 config_fname, phy, iface ? "" : " --> new PHY");
2029 if (iface) {
2030 struct hostapd_config *conf;
2031 struct hostapd_bss_config **tmp_conf;
2032 struct hostapd_data **tmp_bss;
2033 struct hostapd_bss_config *bss;
2034 const char *ifname;
2035
2036 /* Add new BSS to existing iface */
2037 conf = interfaces->config_read_cb(config_fname);
2038 if (conf == NULL)
2039 return NULL;
2040 if (conf->num_bss > 1) {
2041 wpa_printf(MSG_ERROR, "Multiple BSSes specified in BSS-config");
2042 hostapd_config_free(conf);
2043 return NULL;
2044 }
2045
2046 ifname = conf->bss[0]->iface;
2047 if (ifname[0] != '\0' && ifname_in_use(interfaces, ifname)) {
2048 wpa_printf(MSG_ERROR,
2049 "Interface name %s already in use", ifname);
2050 hostapd_config_free(conf);
2051 return NULL;
2052 }
2053
2054 tmp_conf = os_realloc_array(
2055 iface->conf->bss, iface->conf->num_bss + 1,
2056 sizeof(struct hostapd_bss_config *));
2057 tmp_bss = os_realloc_array(iface->bss, iface->num_bss + 1,
2058 sizeof(struct hostapd_data *));
2059 if (tmp_bss)
2060 iface->bss = tmp_bss;
2061 if (tmp_conf) {
2062 iface->conf->bss = tmp_conf;
2063 iface->conf->last_bss = tmp_conf[0];
2064 }
2065 if (tmp_bss == NULL || tmp_conf == NULL) {
2066 hostapd_config_free(conf);
2067 return NULL;
2068 }
2069 bss = iface->conf->bss[iface->conf->num_bss] = conf->bss[0];
2070 iface->conf->num_bss++;
2071
2072 hapd = hostapd_alloc_bss_data(iface, iface->conf, bss);
2073 if (hapd == NULL) {
2074 iface->conf->num_bss--;
2075 hostapd_config_free(conf);
2076 return NULL;
2077 }
2078 iface->conf->last_bss = bss;
2079 iface->bss[iface->num_bss] = hapd;
2080 hapd->msg_ctx = hapd;
2081
2082 bss_idx = iface->num_bss++;
2083 conf->num_bss--;
2084 conf->bss[0] = NULL;
2085 hostapd_config_free(conf);
2086 } else {
2087 /* Add a new iface with the first BSS */
2088 new_iface = iface = hostapd_init(interfaces, config_fname);
2089 if (!iface)
2090 return NULL;
2091 os_strlcpy(iface->phy, phy, sizeof(iface->phy));
2092 iface->interfaces = interfaces;
2093 bss_idx = 0;
2094 }
2095
2096 for (k = 0; k < debug; k++) {
2097 if (iface->bss[bss_idx]->conf->logger_stdout_level > 0)
2098 iface->bss[bss_idx]->conf->logger_stdout_level--;
2099 }
2100
2101 if (iface->conf->bss[bss_idx]->iface[0] == '\0' &&
2102 !hostapd_drv_none(iface->bss[bss_idx])) {
2103 wpa_printf(MSG_ERROR, "Interface name not specified in %s",
2104 config_fname);
2105 if (new_iface)
2106 hostapd_interface_deinit_free(new_iface);
2107 return NULL;
2108 }
2109
2110 return iface;
2111 }
2112
2113
2114 void hostapd_interface_deinit_free(struct hostapd_iface *iface)
2115 {
2116 const struct wpa_driver_ops *driver;
2117 void *drv_priv;
2118
2119 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
2120 if (iface == NULL)
2121 return;
2122 wpa_printf(MSG_DEBUG, "%s: num_bss=%u conf->num_bss=%u",
2123 __func__, (unsigned int) iface->num_bss,
2124 (unsigned int) iface->conf->num_bss);
2125 driver = iface->bss[0]->driver;
2126 drv_priv = iface->bss[0]->drv_priv;
2127 hostapd_interface_deinit(iface);
2128 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
2129 __func__, driver, drv_priv);
2130 if (driver && driver->hapd_deinit && drv_priv) {
2131 driver->hapd_deinit(drv_priv);
2132 iface->bss[0]->drv_priv = NULL;
2133 }
2134 hostapd_interface_free(iface);
2135 }
2136
2137
2138 static void hostapd_deinit_driver(const struct wpa_driver_ops *driver,
2139 void *drv_priv,
2140 struct hostapd_iface *hapd_iface)
2141 {
2142 size_t j;
2143
2144 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
2145 __func__, driver, drv_priv);
2146 if (driver && driver->hapd_deinit && drv_priv) {
2147 driver->hapd_deinit(drv_priv);
2148 for (j = 0; j < hapd_iface->num_bss; j++) {
2149 wpa_printf(MSG_DEBUG, "%s:bss[%d]->drv_priv=%p",
2150 __func__, (int) j,
2151 hapd_iface->bss[j]->drv_priv);
2152 if (hapd_iface->bss[j]->drv_priv == drv_priv)
2153 hapd_iface->bss[j]->drv_priv = NULL;
2154 }
2155 }
2156 }
2157
2158
2159 int hostapd_enable_iface(struct hostapd_iface *hapd_iface)
2160 {
2161 size_t j;
2162
2163 if (hapd_iface->bss[0]->drv_priv != NULL) {
2164 wpa_printf(MSG_ERROR, "Interface %s already enabled",
2165 hapd_iface->conf->bss[0]->iface);
2166 return -1;
2167 }
2168
2169 wpa_printf(MSG_DEBUG, "Enable interface %s",
2170 hapd_iface->conf->bss[0]->iface);
2171
2172 for (j = 0; j < hapd_iface->num_bss; j++)
2173 hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
2174 if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
2175 wpa_printf(MSG_INFO, "Invalid configuration - cannot enable");
2176 return -1;
2177 }
2178
2179 if (hapd_iface->interfaces == NULL ||
2180 hapd_iface->interfaces->driver_init == NULL ||
2181 hapd_iface->interfaces->driver_init(hapd_iface))
2182 return -1;
2183
2184 if (hostapd_setup_interface(hapd_iface)) {
2185 hostapd_deinit_driver(hapd_iface->bss[0]->driver,
2186 hapd_iface->bss[0]->drv_priv,
2187 hapd_iface);
2188 return -1;
2189 }
2190
2191 return 0;
2192 }
2193
2194
2195 int hostapd_reload_iface(struct hostapd_iface *hapd_iface)
2196 {
2197 size_t j;
2198
2199 wpa_printf(MSG_DEBUG, "Reload interface %s",
2200 hapd_iface->conf->bss[0]->iface);
2201 for (j = 0; j < hapd_iface->num_bss; j++)
2202 hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
2203 if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
2204 wpa_printf(MSG_ERROR, "Updated configuration is invalid");
2205 return -1;
2206 }
2207 hostapd_clear_old(hapd_iface);
2208 for (j = 0; j < hapd_iface->num_bss; j++)
2209 hostapd_reload_bss(hapd_iface->bss[j]);
2210
2211 return 0;
2212 }
2213
2214
2215 int hostapd_disable_iface(struct hostapd_iface *hapd_iface)
2216 {
2217 size_t j;
2218 const struct wpa_driver_ops *driver;
2219 void *drv_priv;
2220
2221 if (hapd_iface == NULL)
2222 return -1;
2223
2224 if (hapd_iface->bss[0]->drv_priv == NULL) {
2225 wpa_printf(MSG_INFO, "Interface %s already disabled",
2226 hapd_iface->conf->bss[0]->iface);
2227 return -1;
2228 }
2229
2230 wpa_msg(hapd_iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2231 driver = hapd_iface->bss[0]->driver;
2232 drv_priv = hapd_iface->bss[0]->drv_priv;
2233
2234 hapd_iface->driver_ap_teardown =
2235 !!(hapd_iface->drv_flags &
2236 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2237
2238 /* same as hostapd_interface_deinit without deinitializing ctrl-iface */
2239 for (j = 0; j < hapd_iface->num_bss; j++) {
2240 struct hostapd_data *hapd = hapd_iface->bss[j];
2241 hostapd_bss_deinit_no_free(hapd);
2242 hostapd_free_hapd_data(hapd);
2243 }
2244
2245 hostapd_deinit_driver(driver, drv_priv, hapd_iface);
2246
2247 /* From hostapd_cleanup_iface: These were initialized in
2248 * hostapd_setup_interface and hostapd_setup_interface_complete
2249 */
2250 hostapd_cleanup_iface_partial(hapd_iface);
2251
2252 wpa_printf(MSG_DEBUG, "Interface %s disabled",
2253 hapd_iface->bss[0]->conf->iface);
2254 hostapd_set_state(hapd_iface, HAPD_IFACE_DISABLED);
2255 return 0;
2256 }
2257
2258
2259 static struct hostapd_iface *
2260 hostapd_iface_alloc(struct hapd_interfaces *interfaces)
2261 {
2262 struct hostapd_iface **iface, *hapd_iface;
2263
2264 iface = os_realloc_array(interfaces->iface, interfaces->count + 1,
2265 sizeof(struct hostapd_iface *));
2266 if (iface == NULL)
2267 return NULL;
2268 interfaces->iface = iface;
2269 hapd_iface = interfaces->iface[interfaces->count] =
2270 os_zalloc(sizeof(*hapd_iface));
2271 if (hapd_iface == NULL) {
2272 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
2273 "the interface", __func__);
2274 return NULL;
2275 }
2276 interfaces->count++;
2277 hapd_iface->interfaces = interfaces;
2278
2279 return hapd_iface;
2280 }
2281
2282
2283 static struct hostapd_config *
2284 hostapd_config_alloc(struct hapd_interfaces *interfaces, const char *ifname,
2285 const char *ctrl_iface, const char *driver)
2286 {
2287 struct hostapd_bss_config *bss;
2288 struct hostapd_config *conf;
2289
2290 /* Allocates memory for bss and conf */
2291 conf = hostapd_config_defaults();
2292 if (conf == NULL) {
2293 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
2294 "configuration", __func__);
2295 return NULL;
2296 }
2297
2298 if (driver) {
2299 int j;
2300
2301 for (j = 0; wpa_drivers[j]; j++) {
2302 if (os_strcmp(driver, wpa_drivers[j]->name) == 0) {
2303 conf->driver = wpa_drivers[j];
2304 goto skip;
2305 }
2306 }
2307
2308 wpa_printf(MSG_ERROR,
2309 "Invalid/unknown driver '%s' - registering the default driver",
2310 driver);
2311 }
2312
2313 conf->driver = wpa_drivers[0];
2314 if (conf->driver == NULL) {
2315 wpa_printf(MSG_ERROR, "No driver wrappers registered!");
2316 hostapd_config_free(conf);
2317 return NULL;
2318 }
2319
2320 skip:
2321 bss = conf->last_bss = conf->bss[0];
2322
2323 os_strlcpy(bss->iface, ifname, sizeof(bss->iface));
2324 bss->ctrl_interface = os_strdup(ctrl_iface);
2325 if (bss->ctrl_interface == NULL) {
2326 hostapd_config_free(conf);
2327 return NULL;
2328 }
2329
2330 /* Reading configuration file skipped, will be done in SET!
2331 * From reading the configuration till the end has to be done in
2332 * SET
2333 */
2334 return conf;
2335 }
2336
2337
2338 static int hostapd_data_alloc(struct hostapd_iface *hapd_iface,
2339 struct hostapd_config *conf)
2340 {
2341 size_t i;
2342 struct hostapd_data *hapd;
2343
2344 hapd_iface->bss = os_calloc(conf->num_bss,
2345 sizeof(struct hostapd_data *));
2346 if (hapd_iface->bss == NULL)
2347 return -1;
2348
2349 for (i = 0; i < conf->num_bss; i++) {
2350 hapd = hapd_iface->bss[i] =
2351 hostapd_alloc_bss_data(hapd_iface, conf, conf->bss[i]);
2352 if (hapd == NULL) {
2353 while (i > 0) {
2354 i--;
2355 os_free(hapd_iface->bss[i]);
2356 hapd_iface->bss[i] = NULL;
2357 }
2358 os_free(hapd_iface->bss);
2359 hapd_iface->bss = NULL;
2360 return -1;
2361 }
2362 hapd->msg_ctx = hapd;
2363 }
2364
2365 hapd_iface->conf = conf;
2366 hapd_iface->num_bss = conf->num_bss;
2367
2368 return 0;
2369 }
2370
2371
2372 int hostapd_add_iface(struct hapd_interfaces *interfaces, char *buf)
2373 {
2374 struct hostapd_config *conf = NULL;
2375 struct hostapd_iface *hapd_iface = NULL, *new_iface = NULL;
2376 struct hostapd_data *hapd;
2377 char *ptr;
2378 size_t i, j;
2379 const char *conf_file = NULL, *phy_name = NULL;
2380
2381 if (os_strncmp(buf, "bss_config=", 11) == 0) {
2382 char *pos;
2383 phy_name = buf + 11;
2384 pos = os_strchr(phy_name, ':');
2385 if (!pos)
2386 return -1;
2387 *pos++ = '\0';
2388 conf_file = pos;
2389 if (!os_strlen(conf_file))
2390 return -1;
2391
2392 hapd_iface = hostapd_interface_init_bss(interfaces, phy_name,
2393 conf_file, 0);
2394 if (!hapd_iface)
2395 return -1;
2396 for (j = 0; j < interfaces->count; j++) {
2397 if (interfaces->iface[j] == hapd_iface)
2398 break;
2399 }
2400 if (j == interfaces->count) {
2401 struct hostapd_iface **tmp;
2402 tmp = os_realloc_array(interfaces->iface,
2403 interfaces->count + 1,
2404 sizeof(struct hostapd_iface *));
2405 if (!tmp) {
2406 hostapd_interface_deinit_free(hapd_iface);
2407 return -1;
2408 }
2409 interfaces->iface = tmp;
2410 interfaces->iface[interfaces->count++] = hapd_iface;
2411 new_iface = hapd_iface;
2412 }
2413
2414 if (new_iface) {
2415 if (interfaces->driver_init(hapd_iface))
2416 goto fail;
2417
2418 if (hostapd_setup_interface(hapd_iface)) {
2419 hostapd_deinit_driver(
2420 hapd_iface->bss[0]->driver,
2421 hapd_iface->bss[0]->drv_priv,
2422 hapd_iface);
2423 goto fail;
2424 }
2425 } else {
2426 /* Assign new BSS with bss[0]'s driver info */
2427 hapd = hapd_iface->bss[hapd_iface->num_bss - 1];
2428 hapd->driver = hapd_iface->bss[0]->driver;
2429 hapd->drv_priv = hapd_iface->bss[0]->drv_priv;
2430 os_memcpy(hapd->own_addr, hapd_iface->bss[0]->own_addr,
2431 ETH_ALEN);
2432
2433 if (start_ctrl_iface_bss(hapd) < 0 ||
2434 (hapd_iface->state == HAPD_IFACE_ENABLED &&
2435 hostapd_setup_bss(hapd, -1))) {
2436 hostapd_cleanup(hapd);
2437 hapd_iface->bss[hapd_iface->num_bss - 1] = NULL;
2438 hapd_iface->conf->num_bss--;
2439 hapd_iface->num_bss--;
2440 wpa_printf(MSG_DEBUG, "%s: free hapd %p %s",
2441 __func__, hapd, hapd->conf->iface);
2442 hostapd_config_free_bss(hapd->conf);
2443 hapd->conf = NULL;
2444 os_free(hapd);
2445 return -1;
2446 }
2447 }
2448 return 0;
2449 }
2450
2451 ptr = os_strchr(buf, ' ');
2452 if (ptr == NULL)
2453 return -1;
2454 *ptr++ = '\0';
2455
2456 if (os_strncmp(ptr, "config=", 7) == 0)
2457 conf_file = ptr + 7;
2458
2459 for (i = 0; i < interfaces->count; i++) {
2460 if (!os_strcmp(interfaces->iface[i]->conf->bss[0]->iface,
2461 buf)) {
2462 wpa_printf(MSG_INFO, "Cannot add interface - it "
2463 "already exists");
2464 return -1;
2465 }
2466 }
2467
2468 hapd_iface = hostapd_iface_alloc(interfaces);
2469 if (hapd_iface == NULL) {
2470 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2471 "for interface", __func__);
2472 goto fail;
2473 }
2474 new_iface = hapd_iface;
2475
2476 if (conf_file && interfaces->config_read_cb) {
2477 conf = interfaces->config_read_cb(conf_file);
2478 if (conf && conf->bss)
2479 os_strlcpy(conf->bss[0]->iface, buf,
2480 sizeof(conf->bss[0]->iface));
2481 } else {
2482 char *driver = os_strchr(ptr, ' ');
2483
2484 if (driver)
2485 *driver++ = '\0';
2486 conf = hostapd_config_alloc(interfaces, buf, ptr, driver);
2487 }
2488
2489 if (conf == NULL || conf->bss == NULL) {
2490 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2491 "for configuration", __func__);
2492 goto fail;
2493 }
2494
2495 if (hostapd_data_alloc(hapd_iface, conf) < 0) {
2496 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2497 "for hostapd", __func__);
2498 goto fail;
2499 }
2500 conf = NULL;
2501
2502 if (start_ctrl_iface(hapd_iface) < 0)
2503 goto fail;
2504
2505 wpa_printf(MSG_INFO, "Add interface '%s'",
2506 hapd_iface->conf->bss[0]->iface);
2507
2508 return 0;
2509
2510 fail:
2511 if (conf)
2512 hostapd_config_free(conf);
2513 if (hapd_iface) {
2514 if (hapd_iface->bss) {
2515 for (i = 0; i < hapd_iface->num_bss; i++) {
2516 hapd = hapd_iface->bss[i];
2517 if (!hapd)
2518 continue;
2519 if (hapd_iface->interfaces &&
2520 hapd_iface->interfaces->ctrl_iface_deinit)
2521 hapd_iface->interfaces->
2522 ctrl_iface_deinit(hapd);
2523 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
2524 __func__, hapd_iface->bss[i],
2525 hapd->conf->iface);
2526 hostapd_cleanup(hapd);
2527 os_free(hapd);
2528 hapd_iface->bss[i] = NULL;
2529 }
2530 os_free(hapd_iface->bss);
2531 hapd_iface->bss = NULL;
2532 }
2533 if (new_iface) {
2534 interfaces->count--;
2535 interfaces->iface[interfaces->count] = NULL;
2536 }
2537 hostapd_cleanup_iface(hapd_iface);
2538 }
2539 return -1;
2540 }
2541
2542
2543 static int hostapd_remove_bss(struct hostapd_iface *iface, unsigned int idx)
2544 {
2545 size_t i;
2546
2547 wpa_printf(MSG_INFO, "Remove BSS '%s'", iface->conf->bss[idx]->iface);
2548
2549 /* Remove hostapd_data only if it has already been initialized */
2550 if (idx < iface->num_bss) {
2551 struct hostapd_data *hapd = iface->bss[idx];
2552
2553 hostapd_bss_deinit(hapd);
2554 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
2555 __func__, hapd, hapd->conf->iface);
2556 hostapd_config_free_bss(hapd->conf);
2557 hapd->conf = NULL;
2558 os_free(hapd);
2559
2560 iface->num_bss--;
2561
2562 for (i = idx; i < iface->num_bss; i++)
2563 iface->bss[i] = iface->bss[i + 1];
2564 } else {
2565 hostapd_config_free_bss(iface->conf->bss[idx]);
2566 iface->conf->bss[idx] = NULL;
2567 }
2568
2569 iface->conf->num_bss--;
2570 for (i = idx; i < iface->conf->num_bss; i++)
2571 iface->conf->bss[i] = iface->conf->bss[i + 1];
2572
2573 return 0;
2574 }
2575
2576
2577 int hostapd_remove_iface(struct hapd_interfaces *interfaces, char *buf)
2578 {
2579 struct hostapd_iface *hapd_iface;
2580 size_t i, j, k = 0;
2581
2582 for (i = 0; i < interfaces->count; i++) {
2583 hapd_iface = interfaces->iface[i];
2584 if (hapd_iface == NULL)
2585 return -1;
2586 if (!os_strcmp(hapd_iface->conf->bss[0]->iface, buf)) {
2587 wpa_printf(MSG_INFO, "Remove interface '%s'", buf);
2588 hapd_iface->driver_ap_teardown =
2589 !!(hapd_iface->drv_flags &
2590 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2591
2592 hostapd_interface_deinit_free(hapd_iface);
2593 k = i;
2594 while (k < (interfaces->count - 1)) {
2595 interfaces->iface[k] =
2596 interfaces->iface[k + 1];
2597 k++;
2598 }
2599 interfaces->count--;
2600 return 0;
2601 }
2602
2603 for (j = 0; j < hapd_iface->conf->num_bss; j++) {
2604 if (!os_strcmp(hapd_iface->conf->bss[j]->iface, buf)) {
2605 hapd_iface->driver_ap_teardown =
2606 !(hapd_iface->drv_flags &
2607 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2608 return hostapd_remove_bss(hapd_iface, j);
2609 }
2610 }
2611 }
2612 return -1;
2613 }
2614
2615
2616 /**
2617 * hostapd_new_assoc_sta - Notify that a new station associated with the AP
2618 * @hapd: Pointer to BSS data
2619 * @sta: Pointer to the associated STA data
2620 * @reassoc: 1 to indicate this was a re-association; 0 = first association
2621 *
2622 * This function will be called whenever a station associates with the AP. It
2623 * can be called from ieee802_11.c for drivers that export MLME to hostapd and
2624 * from drv_callbacks.c based on driver events for drivers that take care of
2625 * management frames (IEEE 802.11 authentication and association) internally.
2626 */
2627 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
2628 int reassoc)
2629 {
2630 if (hapd->tkip_countermeasures) {
2631 hostapd_drv_sta_deauth(hapd, sta->addr,
2632 WLAN_REASON_MICHAEL_MIC_FAILURE);
2633 return;
2634 }
2635
2636 hostapd_prune_associations(hapd, sta->addr);
2637 ap_sta_clear_disconnect_timeouts(hapd, sta);
2638
2639 /* IEEE 802.11F (IAPP) */
2640 if (hapd->conf->ieee802_11f)
2641 iapp_new_station(hapd->iapp, sta);
2642
2643 #ifdef CONFIG_P2P
2644 if (sta->p2p_ie == NULL && !sta->no_p2p_set) {
2645 sta->no_p2p_set = 1;
2646 hapd->num_sta_no_p2p++;
2647 if (hapd->num_sta_no_p2p == 1)
2648 hostapd_p2p_non_p2p_sta_connected(hapd);
2649 }
2650 #endif /* CONFIG_P2P */
2651
2652 /* Start accounting here, if IEEE 802.1X and WPA are not used.
2653 * IEEE 802.1X/WPA code will start accounting after the station has
2654 * been authorized. */
2655 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen) {
2656 ap_sta_set_authorized(hapd, sta, 1);
2657 os_get_reltime(&sta->connected_time);
2658 accounting_sta_start(hapd, sta);
2659 }
2660
2661 /* Start IEEE 802.1X authentication process for new stations */
2662 ieee802_1x_new_station(hapd, sta);
2663 if (reassoc) {
2664 if (sta->auth_alg != WLAN_AUTH_FT &&
2665 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
2666 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
2667 } else
2668 wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
2669
2670 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) {
2671 wpa_printf(MSG_DEBUG,
2672 "%s: %s: reschedule ap_handle_timer timeout for "
2673 MACSTR " (%d seconds - ap_max_inactivity)",
2674 hapd->conf->iface, __func__, MAC2STR(sta->addr),
2675 hapd->conf->ap_max_inactivity);
2676 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
2677 eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
2678 ap_handle_timer, hapd, sta);
2679 }
2680 }
2681
2682
2683 const char * hostapd_state_text(enum hostapd_iface_state s)
2684 {
2685 switch (s) {
2686 case HAPD_IFACE_UNINITIALIZED:
2687 return "UNINITIALIZED";
2688 case HAPD_IFACE_DISABLED:
2689 return "DISABLED";
2690 case HAPD_IFACE_COUNTRY_UPDATE:
2691 return "COUNTRY_UPDATE";
2692 case HAPD_IFACE_ACS:
2693 return "ACS";
2694 case HAPD_IFACE_HT_SCAN:
2695 return "HT_SCAN";
2696 case HAPD_IFACE_DFS:
2697 return "DFS";
2698 case HAPD_IFACE_ENABLED:
2699 return "ENABLED";
2700 }
2701
2702 return "UNKNOWN";
2703 }
2704
2705
2706 void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s)
2707 {
2708 wpa_printf(MSG_INFO, "%s: interface state %s->%s",
2709 iface->conf->bss[0]->iface, hostapd_state_text(iface->state),
2710 hostapd_state_text(s));
2711 iface->state = s;
2712 }
2713
2714
2715 int hostapd_csa_in_progress(struct hostapd_iface *iface)
2716 {
2717 unsigned int i;
2718
2719 for (i = 0; i < iface->num_bss; i++)
2720 if (iface->bss[i]->csa_in_progress)
2721 return 1;
2722 return 0;
2723 }
2724
2725
2726 #ifdef NEED_AP_MLME
2727
2728 static void free_beacon_data(struct beacon_data *beacon)
2729 {
2730 os_free(beacon->head);
2731 beacon->head = NULL;
2732 os_free(beacon->tail);
2733 beacon->tail = NULL;
2734 os_free(beacon->probe_resp);
2735 beacon->probe_resp = NULL;
2736 os_free(beacon->beacon_ies);
2737 beacon->beacon_ies = NULL;
2738 os_free(beacon->proberesp_ies);
2739 beacon->proberesp_ies = NULL;
2740 os_free(beacon->assocresp_ies);
2741 beacon->assocresp_ies = NULL;
2742 }
2743
2744
2745 static int hostapd_build_beacon_data(struct hostapd_data *hapd,
2746 struct beacon_data *beacon)
2747 {
2748 struct wpabuf *beacon_extra, *proberesp_extra, *assocresp_extra;
2749 struct wpa_driver_ap_params params;
2750 int ret;
2751
2752 os_memset(beacon, 0, sizeof(*beacon));
2753 ret = ieee802_11_build_ap_params(hapd, &params);
2754 if (ret < 0)
2755 return ret;
2756
2757 ret = hostapd_build_ap_extra_ies(hapd, &beacon_extra,
2758 &proberesp_extra,
2759 &assocresp_extra);
2760 if (ret)
2761 goto free_ap_params;
2762
2763 ret = -1;
2764 beacon->head = os_malloc(params.head_len);
2765 if (!beacon->head)
2766 goto free_ap_extra_ies;
2767
2768 os_memcpy(beacon->head, params.head, params.head_len);
2769 beacon->head_len = params.head_len;
2770
2771 beacon->tail = os_malloc(params.tail_len);
2772 if (!beacon->tail)
2773 goto free_beacon;
2774
2775 os_memcpy(beacon->tail, params.tail, params.tail_len);
2776 beacon->tail_len = params.tail_len;
2777
2778 if (params.proberesp != NULL) {
2779 beacon->probe_resp = os_malloc(params.proberesp_len);
2780 if (!beacon->probe_resp)
2781 goto free_beacon;
2782
2783 os_memcpy(beacon->probe_resp, params.proberesp,
2784 params.proberesp_len);
2785 beacon->probe_resp_len = params.proberesp_len;
2786 }
2787
2788 /* copy the extra ies */
2789 if (beacon_extra) {
2790 beacon->beacon_ies = os_malloc(wpabuf_len(beacon_extra));
2791 if (!beacon->beacon_ies)
2792 goto free_beacon;
2793
2794 os_memcpy(beacon->beacon_ies,
2795 beacon_extra->buf, wpabuf_len(beacon_extra));
2796 beacon->beacon_ies_len = wpabuf_len(beacon_extra);
2797 }
2798
2799 if (proberesp_extra) {
2800 beacon->proberesp_ies =
2801 os_malloc(wpabuf_len(proberesp_extra));
2802 if (!beacon->proberesp_ies)
2803 goto free_beacon;
2804
2805 os_memcpy(beacon->proberesp_ies, proberesp_extra->buf,
2806 wpabuf_len(proberesp_extra));
2807 beacon->proberesp_ies_len = wpabuf_len(proberesp_extra);
2808 }
2809
2810 if (assocresp_extra) {
2811 beacon->assocresp_ies =
2812 os_malloc(wpabuf_len(assocresp_extra));
2813 if (!beacon->assocresp_ies)
2814 goto free_beacon;
2815
2816 os_memcpy(beacon->assocresp_ies, assocresp_extra->buf,
2817 wpabuf_len(assocresp_extra));
2818 beacon->assocresp_ies_len = wpabuf_len(assocresp_extra);
2819 }
2820
2821 ret = 0;
2822 free_beacon:
2823 /* if the function fails, the caller should not free beacon data */
2824 if (ret)
2825 free_beacon_data(beacon);
2826
2827 free_ap_extra_ies:
2828 hostapd_free_ap_extra_ies(hapd, beacon_extra, proberesp_extra,
2829 assocresp_extra);
2830 free_ap_params:
2831 ieee802_11_free_ap_params(&params);
2832 return ret;
2833 }
2834
2835
2836 /*
2837 * TODO: This flow currently supports only changing channel and width within
2838 * the same hw_mode. Any other changes to MAC parameters or provided settings
2839 * are not supported.
2840 */
2841 static int hostapd_change_config_freq(struct hostapd_data *hapd,
2842 struct hostapd_config *conf,
2843 struct hostapd_freq_params *params,
2844 struct hostapd_freq_params *old_params)
2845 {
2846 int channel;
2847
2848 if (!params->channel) {
2849 /* check if the new channel is supported by hw */
2850 params->channel = hostapd_hw_get_channel(hapd, params->freq);
2851 }
2852
2853 channel = params->channel;
2854 if (!channel)
2855 return -1;
2856
2857 /* if a pointer to old_params is provided we save previous state */
2858 if (old_params &&
2859 hostapd_set_freq_params(old_params, conf->hw_mode,
2860 hostapd_hw_get_freq(hapd, conf->channel),
2861 conf->channel, conf->ieee80211n,
2862 conf->ieee80211ac,
2863 conf->secondary_channel,
2864 conf->vht_oper_chwidth,
2865 conf->vht_oper_centr_freq_seg0_idx,
2866 conf->vht_oper_centr_freq_seg1_idx,
2867 conf->vht_capab))
2868 return -1;
2869
2870 switch (params->bandwidth) {
2871 case 0:
2872 case 20:
2873 case 40:
2874 conf->vht_oper_chwidth = VHT_CHANWIDTH_USE_HT;
2875 break;
2876 case 80:
2877 if (params->center_freq2)
2878 conf->vht_oper_chwidth = VHT_CHANWIDTH_80P80MHZ;
2879 else
2880 conf->vht_oper_chwidth = VHT_CHANWIDTH_80MHZ;
2881 break;
2882 case 160:
2883 conf->vht_oper_chwidth = VHT_CHANWIDTH_160MHZ;
2884 break;
2885 default:
2886 return -1;
2887 }
2888
2889 conf->channel = channel;
2890 conf->ieee80211n = params->ht_enabled;
2891 conf->secondary_channel = params->sec_channel_offset;
2892 ieee80211_freq_to_chan(params->center_freq1,
2893 &conf->vht_oper_centr_freq_seg0_idx);
2894 ieee80211_freq_to_chan(params->center_freq2,
2895 &conf->vht_oper_centr_freq_seg1_idx);
2896
2897 /* TODO: maybe call here hostapd_config_check here? */
2898
2899 return 0;
2900 }
2901
2902
2903 static int hostapd_fill_csa_settings(struct hostapd_data *hapd,
2904 struct csa_settings *settings)
2905 {
2906 struct hostapd_iface *iface = hapd->iface;
2907 struct hostapd_freq_params old_freq;
2908 int ret;
2909 u8 chan, vht_bandwidth;
2910
2911 os_memset(&old_freq, 0, sizeof(old_freq));
2912 if (!iface || !iface->freq || hapd->csa_in_progress)
2913 return -1;
2914
2915 switch (settings->freq_params.bandwidth) {
2916 case 80:
2917 if (settings->freq_params.center_freq2)
2918 vht_bandwidth = VHT_CHANWIDTH_80P80MHZ;
2919 else
2920 vht_bandwidth = VHT_CHANWIDTH_80MHZ;
2921 break;
2922 case 160:
2923 vht_bandwidth = VHT_CHANWIDTH_160MHZ;
2924 break;
2925 default:
2926 vht_bandwidth = VHT_CHANWIDTH_USE_HT;
2927 break;
2928 }
2929
2930 if (ieee80211_freq_to_channel_ext(
2931 settings->freq_params.freq,
2932 settings->freq_params.sec_channel_offset,
2933 vht_bandwidth,
2934 &hapd->iface->cs_oper_class,
2935 &chan) == NUM_HOSTAPD_MODES) {
2936 wpa_printf(MSG_DEBUG,
2937 "invalid frequency for channel switch (freq=%d, sec_channel_offset=%d, vht_enabled=%d)",
2938 settings->freq_params.freq,
2939 settings->freq_params.sec_channel_offset,
2940 settings->freq_params.vht_enabled);
2941 return -1;
2942 }
2943
2944 settings->freq_params.channel = chan;
2945
2946 ret = hostapd_change_config_freq(iface->bss[0], iface->conf,
2947 &settings->freq_params,
2948 &old_freq);
2949 if (ret)
2950 return ret;
2951
2952 ret = hostapd_build_beacon_data(hapd, &settings->beacon_after);
2953
2954 /* change back the configuration */
2955 hostapd_change_config_freq(iface->bss[0], iface->conf,
2956 &old_freq, NULL);
2957
2958 if (ret)
2959 return ret;
2960
2961 /* set channel switch parameters for csa ie */
2962 hapd->cs_freq_params = settings->freq_params;
2963 hapd->cs_count = settings->cs_count;
2964 hapd->cs_block_tx = settings->block_tx;
2965
2966 ret = hostapd_build_beacon_data(hapd, &settings->beacon_csa);
2967 if (ret) {
2968 free_beacon_data(&settings->beacon_after);
2969 return ret;
2970 }
2971
2972 settings->counter_offset_beacon[0] = hapd->cs_c_off_beacon;
2973 settings->counter_offset_presp[0] = hapd->cs_c_off_proberesp;
2974 settings->counter_offset_beacon[1] = hapd->cs_c_off_ecsa_beacon;
2975 settings->counter_offset_presp[1] = hapd->cs_c_off_ecsa_proberesp;
2976
2977 return 0;
2978 }
2979
2980
2981 void hostapd_cleanup_cs_params(struct hostapd_data *hapd)
2982 {
2983 os_memset(&hapd->cs_freq_params, 0, sizeof(hapd->cs_freq_params));
2984 hapd->cs_count = 0;
2985 hapd->cs_block_tx = 0;
2986 hapd->cs_c_off_beacon = 0;
2987 hapd->cs_c_off_proberesp = 0;
2988 hapd->csa_in_progress = 0;
2989 hapd->cs_c_off_ecsa_beacon = 0;
2990 hapd->cs_c_off_ecsa_proberesp = 0;
2991 }
2992
2993
2994 int hostapd_switch_channel(struct hostapd_data *hapd,
2995 struct csa_settings *settings)
2996 {
2997 int ret;
2998
2999 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
3000 wpa_printf(MSG_INFO, "CSA is not supported");
3001 return -1;
3002 }
3003
3004 ret = hostapd_fill_csa_settings(hapd, settings);
3005 if (ret)
3006 return ret;
3007
3008 ret = hostapd_drv_switch_channel(hapd, settings);
3009 free_beacon_data(&settings->beacon_csa);
3010 free_beacon_data(&settings->beacon_after);
3011
3012 if (ret) {
3013 /* if we failed, clean cs parameters */
3014 hostapd_cleanup_cs_params(hapd);
3015 return ret;
3016 }
3017
3018 hapd->csa_in_progress = 1;
3019 return 0;
3020 }
3021
3022
3023 void
3024 hostapd_switch_channel_fallback(struct hostapd_iface *iface,
3025 const struct hostapd_freq_params *freq_params)
3026 {
3027 int vht_seg0_idx = 0, vht_seg1_idx = 0, vht_bw = VHT_CHANWIDTH_USE_HT;
3028 unsigned int i;
3029
3030 wpa_printf(MSG_DEBUG, "Restarting all CSA-related BSSes");
3031
3032 if (freq_params->center_freq1)
3033 vht_seg0_idx = 36 + (freq_params->center_freq1 - 5180) / 5;
3034 if (freq_params->center_freq2)
3035 vht_seg1_idx = 36 + (freq_params->center_freq2 - 5180) / 5;
3036
3037 switch (freq_params->bandwidth) {
3038 case 0:
3039 case 20:
3040 case 40:
3041 vht_bw = VHT_CHANWIDTH_USE_HT;
3042 break;
3043 case 80:
3044 if (freq_params->center_freq2)
3045 vht_bw = VHT_CHANWIDTH_80P80MHZ;
3046 else
3047 vht_bw = VHT_CHANWIDTH_80MHZ;
3048 break;
3049 case 160:
3050 vht_bw = VHT_CHANWIDTH_160MHZ;
3051 break;
3052 default:
3053 wpa_printf(MSG_WARNING, "Unknown CSA bandwidth: %d",
3054 freq_params->bandwidth);
3055 break;
3056 }
3057
3058 iface->freq = freq_params->freq;
3059 iface->conf->channel = freq_params->channel;
3060 iface->conf->secondary_channel = freq_params->sec_channel_offset;
3061 iface->conf->vht_oper_centr_freq_seg0_idx = vht_seg0_idx;
3062 iface->conf->vht_oper_centr_freq_seg1_idx = vht_seg1_idx;
3063 iface->conf->vht_oper_chwidth = vht_bw;
3064 iface->conf->ieee80211n = freq_params->ht_enabled;
3065 iface->conf->ieee80211ac = freq_params->vht_enabled;
3066
3067 /*
3068 * cs_params must not be cleared earlier because the freq_params
3069 * argument may actually point to one of these.
3070 */
3071 for (i = 0; i < iface->num_bss; i++)
3072 hostapd_cleanup_cs_params(iface->bss[i]);
3073
3074 hostapd_disable_iface(iface);
3075 hostapd_enable_iface(iface);
3076 }
3077
3078
3079 struct hostapd_data * hostapd_get_iface(struct hapd_interfaces *interfaces,
3080 const char *ifname)
3081 {
3082 size_t i, j;
3083
3084 for (i = 0; i < interfaces->count; i++) {
3085 struct hostapd_iface *iface = interfaces->iface[i];
3086
3087 for (j = 0; j < iface->num_bss; j++) {
3088 struct hostapd_data *hapd = iface->bss[j];
3089
3090 if (os_strcmp(ifname, hapd->conf->iface) == 0)
3091 return hapd;
3092 }
3093 }
3094
3095 return NULL;
3096 }
3097
3098 #endif /* NEED_AP_MLME */
3099
3100
3101 void hostapd_periodic_iface(struct hostapd_iface *iface)
3102 {
3103 size_t i;
3104
3105 ap_list_timer(iface);
3106
3107 for (i = 0; i < iface->num_bss; i++) {
3108 struct hostapd_data *hapd = iface->bss[i];
3109
3110 if (!hapd->started)
3111 continue;
3112
3113 #ifndef CONFIG_NO_RADIUS
3114 hostapd_acl_expire(hapd);
3115 #endif /* CONFIG_NO_RADIUS */
3116 }
3117 }
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