xref: /freebsd/contrib/wpa/src/ap/ap_config.c (revision 0957b409)
1 /*
2  * hostapd / Configuration helper functions
3  * Copyright (c) 2003-2014, 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 "crypto/sha1.h"
13 #include "crypto/tls.h"
14 #include "radius/radius_client.h"
15 #include "common/ieee802_11_defs.h"
16 #include "common/eapol_common.h"
17 #include "common/dhcp.h"
18 #include "eap_common/eap_wsc_common.h"
19 #include "eap_server/eap.h"
20 #include "wpa_auth.h"
21 #include "sta_info.h"
22 #include "ap_config.h"
23 
24 
25 static void hostapd_config_free_vlan(struct hostapd_bss_config *bss)
26 {
27 	struct hostapd_vlan *vlan, *prev;
28 
29 	vlan = bss->vlan;
30 	prev = NULL;
31 	while (vlan) {
32 		prev = vlan;
33 		vlan = vlan->next;
34 		os_free(prev);
35 	}
36 
37 	bss->vlan = NULL;
38 }
39 
40 
41 #ifndef DEFAULT_WPA_DISABLE_EAPOL_KEY_RETRIES
42 #define DEFAULT_WPA_DISABLE_EAPOL_KEY_RETRIES 0
43 #endif /* DEFAULT_WPA_DISABLE_EAPOL_KEY_RETRIES */
44 
45 void hostapd_config_defaults_bss(struct hostapd_bss_config *bss)
46 {
47 	dl_list_init(&bss->anqp_elem);
48 
49 	bss->logger_syslog_level = HOSTAPD_LEVEL_INFO;
50 	bss->logger_stdout_level = HOSTAPD_LEVEL_INFO;
51 	bss->logger_syslog = (unsigned int) -1;
52 	bss->logger_stdout = (unsigned int) -1;
53 
54 	bss->auth_algs = WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED;
55 
56 	bss->wep_rekeying_period = 300;
57 	/* use key0 in individual key and key1 in broadcast key */
58 	bss->broadcast_key_idx_min = 1;
59 	bss->broadcast_key_idx_max = 2;
60 	bss->eap_reauth_period = 3600;
61 
62 	bss->wpa_group_rekey = 600;
63 	bss->wpa_gmk_rekey = 86400;
64 	bss->wpa_group_update_count = 4;
65 	bss->wpa_pairwise_update_count = 4;
66 	bss->wpa_disable_eapol_key_retries =
67 		DEFAULT_WPA_DISABLE_EAPOL_KEY_RETRIES;
68 	bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
69 	bss->wpa_pairwise = WPA_CIPHER_TKIP;
70 	bss->wpa_group = WPA_CIPHER_TKIP;
71 	bss->rsn_pairwise = 0;
72 
73 	bss->max_num_sta = MAX_STA_COUNT;
74 
75 	bss->dtim_period = 2;
76 
77 	bss->radius_server_auth_port = 1812;
78 	bss->eap_sim_db_timeout = 1;
79 	bss->ap_max_inactivity = AP_MAX_INACTIVITY;
80 	bss->eapol_version = EAPOL_VERSION;
81 
82 	bss->max_listen_interval = 65535;
83 
84 	bss->pwd_group = 19; /* ECC: GF(p=256) */
85 
86 #ifdef CONFIG_IEEE80211W
87 	bss->assoc_sa_query_max_timeout = 1000;
88 	bss->assoc_sa_query_retry_timeout = 201;
89 	bss->group_mgmt_cipher = WPA_CIPHER_AES_128_CMAC;
90 #endif /* CONFIG_IEEE80211W */
91 #ifdef EAP_SERVER_FAST
92 	 /* both anonymous and authenticated provisioning */
93 	bss->eap_fast_prov = 3;
94 	bss->pac_key_lifetime = 7 * 24 * 60 * 60;
95 	bss->pac_key_refresh_time = 1 * 24 * 60 * 60;
96 #endif /* EAP_SERVER_FAST */
97 
98 	/* Set to -1 as defaults depends on HT in setup */
99 	bss->wmm_enabled = -1;
100 
101 #ifdef CONFIG_IEEE80211R_AP
102 	bss->ft_over_ds = 1;
103 	bss->rkh_pos_timeout = 86400;
104 	bss->rkh_neg_timeout = 60;
105 	bss->rkh_pull_timeout = 1000;
106 	bss->rkh_pull_retries = 4;
107 	bss->r0_key_lifetime = 1209600;
108 #endif /* CONFIG_IEEE80211R_AP */
109 
110 	bss->radius_das_time_window = 300;
111 
112 	bss->sae_anti_clogging_threshold = 5;
113 	bss->sae_sync = 5;
114 
115 	bss->gas_frag_limit = 1400;
116 
117 #ifdef CONFIG_FILS
118 	dl_list_init(&bss->fils_realms);
119 	bss->fils_hlp_wait_time = 30;
120 	bss->dhcp_server_port = DHCP_SERVER_PORT;
121 	bss->dhcp_relay_port = DHCP_SERVER_PORT;
122 #endif /* CONFIG_FILS */
123 
124 	bss->broadcast_deauth = 1;
125 
126 #ifdef CONFIG_MBO
127 	bss->mbo_cell_data_conn_pref = -1;
128 #endif /* CONFIG_MBO */
129 
130 	/* Disable TLS v1.3 by default for now to avoid interoperability issue.
131 	 * This can be enabled by default once the implementation has been fully
132 	 * completed and tested with other implementations. */
133 	bss->tls_flags = TLS_CONN_DISABLE_TLSv1_3;
134 }
135 
136 
137 struct hostapd_config * hostapd_config_defaults(void)
138 {
139 #define ecw2cw(ecw) ((1 << (ecw)) - 1)
140 
141 	struct hostapd_config *conf;
142 	struct hostapd_bss_config *bss;
143 	const int aCWmin = 4, aCWmax = 10;
144 	const struct hostapd_wmm_ac_params ac_bk =
145 		{ aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
146 	const struct hostapd_wmm_ac_params ac_be =
147 		{ aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
148 	const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
149 		{ aCWmin - 1, aCWmin, 2, 3008 / 32, 0 };
150 	const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
151 		{ aCWmin - 2, aCWmin - 1, 2, 1504 / 32, 0 };
152 	const struct hostapd_tx_queue_params txq_bk =
153 		{ 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 };
154 	const struct hostapd_tx_queue_params txq_be =
155 		{ 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0};
156 	const struct hostapd_tx_queue_params txq_vi =
157 		{ 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30};
158 	const struct hostapd_tx_queue_params txq_vo =
159 		{ 1, (ecw2cw(aCWmin) + 1) / 4 - 1,
160 		  (ecw2cw(aCWmin) + 1) / 2 - 1, 15};
161 
162 #undef ecw2cw
163 
164 	conf = os_zalloc(sizeof(*conf));
165 	bss = os_zalloc(sizeof(*bss));
166 	if (conf == NULL || bss == NULL) {
167 		wpa_printf(MSG_ERROR, "Failed to allocate memory for "
168 			   "configuration data.");
169 		os_free(conf);
170 		os_free(bss);
171 		return NULL;
172 	}
173 	conf->bss = os_calloc(1, sizeof(struct hostapd_bss_config *));
174 	if (conf->bss == NULL) {
175 		os_free(conf);
176 		os_free(bss);
177 		return NULL;
178 	}
179 	conf->bss[0] = bss;
180 
181 	bss->radius = os_zalloc(sizeof(*bss->radius));
182 	if (bss->radius == NULL) {
183 		os_free(conf->bss);
184 		os_free(conf);
185 		os_free(bss);
186 		return NULL;
187 	}
188 
189 	hostapd_config_defaults_bss(bss);
190 
191 	conf->num_bss = 1;
192 
193 	conf->beacon_int = 100;
194 	conf->rts_threshold = -1; /* use driver default: 2347 */
195 	conf->fragm_threshold = -1; /* user driver default: 2346 */
196 	conf->send_probe_response = 1;
197 	/* Set to invalid value means do not add Power Constraint IE */
198 	conf->local_pwr_constraint = -1;
199 
200 	conf->wmm_ac_params[0] = ac_be;
201 	conf->wmm_ac_params[1] = ac_bk;
202 	conf->wmm_ac_params[2] = ac_vi;
203 	conf->wmm_ac_params[3] = ac_vo;
204 
205 	conf->tx_queue[0] = txq_vo;
206 	conf->tx_queue[1] = txq_vi;
207 	conf->tx_queue[2] = txq_be;
208 	conf->tx_queue[3] = txq_bk;
209 
210 	conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED;
211 
212 	conf->ap_table_max_size = 255;
213 	conf->ap_table_expiration_time = 60;
214 	conf->track_sta_max_age = 180;
215 
216 #ifdef CONFIG_TESTING_OPTIONS
217 	conf->ignore_probe_probability = 0.0;
218 	conf->ignore_auth_probability = 0.0;
219 	conf->ignore_assoc_probability = 0.0;
220 	conf->ignore_reassoc_probability = 0.0;
221 	conf->corrupt_gtk_rekey_mic_probability = 0.0;
222 	conf->ecsa_ie_only = 0;
223 #endif /* CONFIG_TESTING_OPTIONS */
224 
225 	conf->acs = 0;
226 	conf->acs_ch_list.num = 0;
227 #ifdef CONFIG_ACS
228 	conf->acs_num_scans = 5;
229 #endif /* CONFIG_ACS */
230 
231 	/* The third octet of the country string uses an ASCII space character
232 	 * by default to indicate that the regulations encompass all
233 	 * environments for the current frequency band in the country. */
234 	conf->country[2] = ' ';
235 
236 	return conf;
237 }
238 
239 
240 int hostapd_mac_comp(const void *a, const void *b)
241 {
242 	return os_memcmp(a, b, sizeof(macaddr));
243 }
244 
245 
246 static int hostapd_config_read_wpa_psk(const char *fname,
247 				       struct hostapd_ssid *ssid)
248 {
249 	FILE *f;
250 	char buf[128], *pos;
251 	int line = 0, ret = 0, len, ok;
252 	u8 addr[ETH_ALEN];
253 	struct hostapd_wpa_psk *psk;
254 
255 	if (!fname)
256 		return 0;
257 
258 	f = fopen(fname, "r");
259 	if (!f) {
260 		wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname);
261 		return -1;
262 	}
263 
264 	while (fgets(buf, sizeof(buf), f)) {
265 		line++;
266 
267 		if (buf[0] == '#')
268 			continue;
269 		pos = buf;
270 		while (*pos != '\0') {
271 			if (*pos == '\n') {
272 				*pos = '\0';
273 				break;
274 			}
275 			pos++;
276 		}
277 		if (buf[0] == '\0')
278 			continue;
279 
280 		if (hwaddr_aton(buf, addr)) {
281 			wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on "
282 				   "line %d in '%s'", buf, line, fname);
283 			ret = -1;
284 			break;
285 		}
286 
287 		psk = os_zalloc(sizeof(*psk));
288 		if (psk == NULL) {
289 			wpa_printf(MSG_ERROR, "WPA PSK allocation failed");
290 			ret = -1;
291 			break;
292 		}
293 		if (is_zero_ether_addr(addr))
294 			psk->group = 1;
295 		else
296 			os_memcpy(psk->addr, addr, ETH_ALEN);
297 
298 		pos = buf + 17;
299 		if (*pos == '\0') {
300 			wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'",
301 				   line, fname);
302 			os_free(psk);
303 			ret = -1;
304 			break;
305 		}
306 		pos++;
307 
308 		ok = 0;
309 		len = os_strlen(pos);
310 		if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
311 			ok = 1;
312 		else if (len >= 8 && len < 64) {
313 			pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len,
314 				    4096, psk->psk, PMK_LEN);
315 			ok = 1;
316 		}
317 		if (!ok) {
318 			wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in "
319 				   "'%s'", pos, line, fname);
320 			os_free(psk);
321 			ret = -1;
322 			break;
323 		}
324 
325 		psk->next = ssid->wpa_psk;
326 		ssid->wpa_psk = psk;
327 	}
328 
329 	fclose(f);
330 
331 	return ret;
332 }
333 
334 
335 static int hostapd_derive_psk(struct hostapd_ssid *ssid)
336 {
337 	ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
338 	if (ssid->wpa_psk == NULL) {
339 		wpa_printf(MSG_ERROR, "Unable to alloc space for PSK");
340 		return -1;
341 	}
342 	wpa_hexdump_ascii(MSG_DEBUG, "SSID",
343 			  (u8 *) ssid->ssid, ssid->ssid_len);
344 	wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)",
345 			      (u8 *) ssid->wpa_passphrase,
346 			      os_strlen(ssid->wpa_passphrase));
347 	pbkdf2_sha1(ssid->wpa_passphrase,
348 		    ssid->ssid, ssid->ssid_len,
349 		    4096, ssid->wpa_psk->psk, PMK_LEN);
350 	wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)",
351 			ssid->wpa_psk->psk, PMK_LEN);
352 	return 0;
353 }
354 
355 
356 int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
357 {
358 	struct hostapd_ssid *ssid = &conf->ssid;
359 
360 	if (ssid->wpa_passphrase != NULL) {
361 		if (ssid->wpa_psk != NULL) {
362 			wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK "
363 				   "instead of passphrase");
364 		} else {
365 			wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on "
366 				   "passphrase");
367 			if (hostapd_derive_psk(ssid) < 0)
368 				return -1;
369 		}
370 		ssid->wpa_psk->group = 1;
371 	}
372 
373 	return hostapd_config_read_wpa_psk(ssid->wpa_psk_file, &conf->ssid);
374 }
375 
376 
377 static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
378 				       int num_servers)
379 {
380 	int i;
381 
382 	for (i = 0; i < num_servers; i++) {
383 		os_free(servers[i].shared_secret);
384 	}
385 	os_free(servers);
386 }
387 
388 
389 struct hostapd_radius_attr *
390 hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type)
391 {
392 	for (; attr; attr = attr->next) {
393 		if (attr->type == type)
394 			return attr;
395 	}
396 	return NULL;
397 }
398 
399 
400 static void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr)
401 {
402 	struct hostapd_radius_attr *prev;
403 
404 	while (attr) {
405 		prev = attr;
406 		attr = attr->next;
407 		wpabuf_free(prev->val);
408 		os_free(prev);
409 	}
410 }
411 
412 
413 void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
414 {
415 	hostapd_config_free_radius_attr(user->accept_attr);
416 	os_free(user->identity);
417 	bin_clear_free(user->password, user->password_len);
418 	bin_clear_free(user->salt, user->salt_len);
419 	os_free(user);
420 }
421 
422 
423 void hostapd_config_free_eap_users(struct hostapd_eap_user *user)
424 {
425 	struct hostapd_eap_user *prev_user;
426 
427 	while (user) {
428 		prev_user = user;
429 		user = user->next;
430 		hostapd_config_free_eap_user(prev_user);
431 	}
432 }
433 
434 
435 static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
436 {
437 	int i;
438 	for (i = 0; i < NUM_WEP_KEYS; i++) {
439 		bin_clear_free(keys->key[i], keys->len[i]);
440 		keys->key[i] = NULL;
441 	}
442 }
443 
444 
445 void hostapd_config_clear_wpa_psk(struct hostapd_wpa_psk **l)
446 {
447 	struct hostapd_wpa_psk *psk, *tmp;
448 
449 	for (psk = *l; psk;) {
450 		tmp = psk;
451 		psk = psk->next;
452 		bin_clear_free(tmp, sizeof(*tmp));
453 	}
454 	*l = NULL;
455 }
456 
457 
458 static void hostapd_config_free_anqp_elem(struct hostapd_bss_config *conf)
459 {
460 	struct anqp_element *elem;
461 
462 	while ((elem = dl_list_first(&conf->anqp_elem, struct anqp_element,
463 				     list))) {
464 		dl_list_del(&elem->list);
465 		wpabuf_free(elem->payload);
466 		os_free(elem);
467 	}
468 }
469 
470 
471 static void hostapd_config_free_fils_realms(struct hostapd_bss_config *conf)
472 {
473 #ifdef CONFIG_FILS
474 	struct fils_realm *realm;
475 
476 	while ((realm = dl_list_first(&conf->fils_realms, struct fils_realm,
477 				      list))) {
478 		dl_list_del(&realm->list);
479 		os_free(realm);
480 	}
481 #endif /* CONFIG_FILS */
482 }
483 
484 
485 static void hostapd_config_free_sae_passwords(struct hostapd_bss_config *conf)
486 {
487 	struct sae_password_entry *pw, *tmp;
488 
489 	pw = conf->sae_passwords;
490 	conf->sae_passwords = NULL;
491 	while (pw) {
492 		tmp = pw;
493 		pw = pw->next;
494 		str_clear_free(tmp->password);
495 		os_free(tmp->identifier);
496 		os_free(tmp);
497 	}
498 }
499 
500 
501 void hostapd_config_free_bss(struct hostapd_bss_config *conf)
502 {
503 	if (conf == NULL)
504 		return;
505 
506 	hostapd_config_clear_wpa_psk(&conf->ssid.wpa_psk);
507 
508 	str_clear_free(conf->ssid.wpa_passphrase);
509 	os_free(conf->ssid.wpa_psk_file);
510 	hostapd_config_free_wep(&conf->ssid.wep);
511 #ifdef CONFIG_FULL_DYNAMIC_VLAN
512 	os_free(conf->ssid.vlan_tagged_interface);
513 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
514 
515 	hostapd_config_free_eap_users(conf->eap_user);
516 	os_free(conf->eap_user_sqlite);
517 
518 	os_free(conf->eap_req_id_text);
519 	os_free(conf->erp_domain);
520 	os_free(conf->accept_mac);
521 	os_free(conf->deny_mac);
522 	os_free(conf->nas_identifier);
523 	if (conf->radius) {
524 		hostapd_config_free_radius(conf->radius->auth_servers,
525 					   conf->radius->num_auth_servers);
526 		hostapd_config_free_radius(conf->radius->acct_servers,
527 					   conf->radius->num_acct_servers);
528 	}
529 	hostapd_config_free_radius_attr(conf->radius_auth_req_attr);
530 	hostapd_config_free_radius_attr(conf->radius_acct_req_attr);
531 	os_free(conf->rsn_preauth_interfaces);
532 	os_free(conf->ctrl_interface);
533 	os_free(conf->ca_cert);
534 	os_free(conf->server_cert);
535 	os_free(conf->private_key);
536 	os_free(conf->private_key_passwd);
537 	os_free(conf->ocsp_stapling_response);
538 	os_free(conf->ocsp_stapling_response_multi);
539 	os_free(conf->dh_file);
540 	os_free(conf->openssl_ciphers);
541 	os_free(conf->pac_opaque_encr_key);
542 	os_free(conf->eap_fast_a_id);
543 	os_free(conf->eap_fast_a_id_info);
544 	os_free(conf->eap_sim_db);
545 	os_free(conf->radius_server_clients);
546 	os_free(conf->radius);
547 	os_free(conf->radius_das_shared_secret);
548 	hostapd_config_free_vlan(conf);
549 	os_free(conf->time_zone);
550 
551 #ifdef CONFIG_IEEE80211R_AP
552 	{
553 		struct ft_remote_r0kh *r0kh, *r0kh_prev;
554 		struct ft_remote_r1kh *r1kh, *r1kh_prev;
555 
556 		r0kh = conf->r0kh_list;
557 		conf->r0kh_list = NULL;
558 		while (r0kh) {
559 			r0kh_prev = r0kh;
560 			r0kh = r0kh->next;
561 			os_free(r0kh_prev);
562 		}
563 
564 		r1kh = conf->r1kh_list;
565 		conf->r1kh_list = NULL;
566 		while (r1kh) {
567 			r1kh_prev = r1kh;
568 			r1kh = r1kh->next;
569 			os_free(r1kh_prev);
570 		}
571 	}
572 #endif /* CONFIG_IEEE80211R_AP */
573 
574 #ifdef CONFIG_WPS
575 	os_free(conf->wps_pin_requests);
576 	os_free(conf->device_name);
577 	os_free(conf->manufacturer);
578 	os_free(conf->model_name);
579 	os_free(conf->model_number);
580 	os_free(conf->serial_number);
581 	os_free(conf->config_methods);
582 	os_free(conf->ap_pin);
583 	os_free(conf->extra_cred);
584 	os_free(conf->ap_settings);
585 	os_free(conf->upnp_iface);
586 	os_free(conf->friendly_name);
587 	os_free(conf->manufacturer_url);
588 	os_free(conf->model_description);
589 	os_free(conf->model_url);
590 	os_free(conf->upc);
591 	{
592 		unsigned int i;
593 
594 		for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++)
595 			wpabuf_free(conf->wps_vendor_ext[i]);
596 	}
597 	wpabuf_free(conf->wps_nfc_dh_pubkey);
598 	wpabuf_free(conf->wps_nfc_dh_privkey);
599 	wpabuf_free(conf->wps_nfc_dev_pw);
600 #endif /* CONFIG_WPS */
601 
602 	os_free(conf->roaming_consortium);
603 	os_free(conf->venue_name);
604 	os_free(conf->venue_url);
605 	os_free(conf->nai_realm_data);
606 	os_free(conf->network_auth_type);
607 	os_free(conf->anqp_3gpp_cell_net);
608 	os_free(conf->domain_name);
609 	hostapd_config_free_anqp_elem(conf);
610 
611 #ifdef CONFIG_RADIUS_TEST
612 	os_free(conf->dump_msk_file);
613 #endif /* CONFIG_RADIUS_TEST */
614 
615 #ifdef CONFIG_HS20
616 	os_free(conf->hs20_oper_friendly_name);
617 	os_free(conf->hs20_wan_metrics);
618 	os_free(conf->hs20_connection_capability);
619 	os_free(conf->hs20_operating_class);
620 	os_free(conf->hs20_icons);
621 	if (conf->hs20_osu_providers) {
622 		size_t i;
623 		for (i = 0; i < conf->hs20_osu_providers_count; i++) {
624 			struct hs20_osu_provider *p;
625 			size_t j;
626 			p = &conf->hs20_osu_providers[i];
627 			os_free(p->friendly_name);
628 			os_free(p->server_uri);
629 			os_free(p->method_list);
630 			for (j = 0; j < p->icons_count; j++)
631 				os_free(p->icons[j]);
632 			os_free(p->icons);
633 			os_free(p->osu_nai);
634 			os_free(p->osu_nai2);
635 			os_free(p->service_desc);
636 		}
637 		os_free(conf->hs20_osu_providers);
638 	}
639 	if (conf->hs20_operator_icon) {
640 		size_t i;
641 
642 		for (i = 0; i < conf->hs20_operator_icon_count; i++)
643 			os_free(conf->hs20_operator_icon[i]);
644 		os_free(conf->hs20_operator_icon);
645 	}
646 	os_free(conf->subscr_remediation_url);
647 	os_free(conf->t_c_filename);
648 	os_free(conf->t_c_server_url);
649 #endif /* CONFIG_HS20 */
650 
651 	wpabuf_free(conf->vendor_elements);
652 	wpabuf_free(conf->assocresp_elements);
653 
654 	os_free(conf->sae_groups);
655 #ifdef CONFIG_OWE
656 	os_free(conf->owe_groups);
657 #endif /* CONFIG_OWE */
658 
659 	os_free(conf->wowlan_triggers);
660 
661 	os_free(conf->server_id);
662 
663 #ifdef CONFIG_TESTING_OPTIONS
664 	wpabuf_free(conf->own_ie_override);
665 	wpabuf_free(conf->sae_commit_override);
666 #endif /* CONFIG_TESTING_OPTIONS */
667 
668 	os_free(conf->no_probe_resp_if_seen_on);
669 	os_free(conf->no_auth_if_seen_on);
670 
671 	hostapd_config_free_fils_realms(conf);
672 
673 #ifdef CONFIG_DPP
674 	os_free(conf->dpp_connector);
675 	wpabuf_free(conf->dpp_netaccesskey);
676 	wpabuf_free(conf->dpp_csign);
677 #endif /* CONFIG_DPP */
678 
679 	hostapd_config_free_sae_passwords(conf);
680 
681 	os_free(conf);
682 }
683 
684 
685 /**
686  * hostapd_config_free - Free hostapd configuration
687  * @conf: Configuration data from hostapd_config_read().
688  */
689 void hostapd_config_free(struct hostapd_config *conf)
690 {
691 	size_t i;
692 
693 	if (conf == NULL)
694 		return;
695 
696 	for (i = 0; i < conf->num_bss; i++)
697 		hostapd_config_free_bss(conf->bss[i]);
698 	os_free(conf->bss);
699 	os_free(conf->supported_rates);
700 	os_free(conf->basic_rates);
701 	os_free(conf->acs_ch_list.range);
702 	os_free(conf->driver_params);
703 #ifdef CONFIG_ACS
704 	os_free(conf->acs_chan_bias);
705 #endif /* CONFIG_ACS */
706 	wpabuf_free(conf->lci);
707 	wpabuf_free(conf->civic);
708 
709 	os_free(conf);
710 }
711 
712 
713 /**
714  * hostapd_maclist_found - Find a MAC address from a list
715  * @list: MAC address list
716  * @num_entries: Number of addresses in the list
717  * @addr: Address to search for
718  * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed
719  * Returns: 1 if address is in the list or 0 if not.
720  *
721  * Perform a binary search for given MAC address from a pre-sorted list.
722  */
723 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries,
724 			  const u8 *addr, struct vlan_description *vlan_id)
725 {
726 	int start, end, middle, res;
727 
728 	start = 0;
729 	end = num_entries - 1;
730 
731 	while (start <= end) {
732 		middle = (start + end) / 2;
733 		res = os_memcmp(list[middle].addr, addr, ETH_ALEN);
734 		if (res == 0) {
735 			if (vlan_id)
736 				*vlan_id = list[middle].vlan_id;
737 			return 1;
738 		}
739 		if (res < 0)
740 			start = middle + 1;
741 		else
742 			end = middle - 1;
743 	}
744 
745 	return 0;
746 }
747 
748 
749 int hostapd_rate_found(int *list, int rate)
750 {
751 	int i;
752 
753 	if (list == NULL)
754 		return 0;
755 
756 	for (i = 0; list[i] >= 0; i++)
757 		if (list[i] == rate)
758 			return 1;
759 
760 	return 0;
761 }
762 
763 
764 int hostapd_vlan_valid(struct hostapd_vlan *vlan,
765 		       struct vlan_description *vlan_desc)
766 {
767 	struct hostapd_vlan *v = vlan;
768 	int i;
769 
770 	if (!vlan_desc->notempty || vlan_desc->untagged < 0 ||
771 	    vlan_desc->untagged > MAX_VLAN_ID)
772 		return 0;
773 	for (i = 0; i < MAX_NUM_TAGGED_VLAN; i++) {
774 		if (vlan_desc->tagged[i] < 0 ||
775 		    vlan_desc->tagged[i] > MAX_VLAN_ID)
776 			return 0;
777 	}
778 	if (!vlan_desc->untagged && !vlan_desc->tagged[0])
779 		return 0;
780 
781 	while (v) {
782 		if (!vlan_compare(&v->vlan_desc, vlan_desc) ||
783 		    v->vlan_id == VLAN_ID_WILDCARD)
784 			return 1;
785 		v = v->next;
786 	}
787 	return 0;
788 }
789 
790 
791 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id)
792 {
793 	struct hostapd_vlan *v = vlan;
794 	while (v) {
795 		if (v->vlan_id == vlan_id)
796 			return v->ifname;
797 		v = v->next;
798 	}
799 	return NULL;
800 }
801 
802 
803 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
804 			   const u8 *addr, const u8 *p2p_dev_addr,
805 			   const u8 *prev_psk)
806 {
807 	struct hostapd_wpa_psk *psk;
808 	int next_ok = prev_psk == NULL;
809 
810 	if (p2p_dev_addr && !is_zero_ether_addr(p2p_dev_addr)) {
811 		wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
812 			   " p2p_dev_addr=" MACSTR " prev_psk=%p",
813 			   MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk);
814 		addr = NULL; /* Use P2P Device Address for matching */
815 	} else {
816 		wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
817 			   " prev_psk=%p",
818 			   MAC2STR(addr), prev_psk);
819 	}
820 
821 	for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
822 		if (next_ok &&
823 		    (psk->group ||
824 		     (addr && os_memcmp(psk->addr, addr, ETH_ALEN) == 0) ||
825 		     (!addr && p2p_dev_addr &&
826 		      os_memcmp(psk->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) ==
827 		      0)))
828 			return psk->psk;
829 
830 		if (psk->psk == prev_psk)
831 			next_ok = 1;
832 	}
833 
834 	return NULL;
835 }
836 
837 
838 static int hostapd_config_check_bss(struct hostapd_bss_config *bss,
839 				    struct hostapd_config *conf,
840 				    int full_config)
841 {
842 	if (full_config && bss->ieee802_1x && !bss->eap_server &&
843 	    !bss->radius->auth_servers) {
844 		wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no "
845 			   "EAP authenticator configured).");
846 		return -1;
847 	}
848 
849 	if (bss->wpa) {
850 		int wep, i;
851 
852 		wep = bss->default_wep_key_len > 0 ||
853 		       bss->individual_wep_key_len > 0;
854 		for (i = 0; i < NUM_WEP_KEYS; i++) {
855 			if (bss->ssid.wep.keys_set) {
856 				wep = 1;
857 				break;
858 			}
859 		}
860 
861 		if (wep) {
862 			wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported");
863 			return -1;
864 		}
865 	}
866 
867 	if (full_config && bss->wpa &&
868 	    bss->wpa_psk_radius != PSK_RADIUS_IGNORED &&
869 	    bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) {
870 		wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no "
871 			   "RADIUS checking (macaddr_acl=2) enabled.");
872 		return -1;
873 	}
874 
875 	if (full_config && bss->wpa && (bss->wpa_key_mgmt & WPA_KEY_MGMT_PSK) &&
876 	    bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL &&
877 	    bss->ssid.wpa_psk_file == NULL &&
878 	    (bss->wpa_psk_radius != PSK_RADIUS_REQUIRED ||
879 	     bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) {
880 		wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase "
881 			   "is not configured.");
882 		return -1;
883 	}
884 
885 	if (full_config && !is_zero_ether_addr(bss->bssid)) {
886 		size_t i;
887 
888 		for (i = 0; i < conf->num_bss; i++) {
889 			if (conf->bss[i] != bss &&
890 			    (hostapd_mac_comp(conf->bss[i]->bssid,
891 					      bss->bssid) == 0)) {
892 				wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR
893 					   " on interface '%s' and '%s'.",
894 					   MAC2STR(bss->bssid),
895 					   conf->bss[i]->iface, bss->iface);
896 				return -1;
897 			}
898 		}
899 	}
900 
901 #ifdef CONFIG_IEEE80211R_AP
902 	if (full_config && wpa_key_mgmt_ft(bss->wpa_key_mgmt) &&
903 	    (bss->nas_identifier == NULL ||
904 	     os_strlen(bss->nas_identifier) < 1 ||
905 	     os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) {
906 		wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires "
907 			   "nas_identifier to be configured as a 1..48 octet "
908 			   "string");
909 		return -1;
910 	}
911 #endif /* CONFIG_IEEE80211R_AP */
912 
913 #ifdef CONFIG_IEEE80211N
914 	if (full_config && conf->ieee80211n &&
915 	    conf->hw_mode == HOSTAPD_MODE_IEEE80211B) {
916 		bss->disable_11n = 1;
917 		wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not "
918 			   "allowed, disabling HT capabilities");
919 	}
920 
921 	if (full_config && conf->ieee80211n &&
922 	    bss->ssid.security_policy == SECURITY_STATIC_WEP) {
923 		bss->disable_11n = 1;
924 		wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not "
925 			   "allowed, disabling HT capabilities");
926 	}
927 
928 	if (full_config && conf->ieee80211n && bss->wpa &&
929 	    !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
930 	    !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
931 				   WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
932 	{
933 		bss->disable_11n = 1;
934 		wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 "
935 			   "requires CCMP/GCMP to be enabled, disabling HT "
936 			   "capabilities");
937 	}
938 #endif /* CONFIG_IEEE80211N */
939 
940 #ifdef CONFIG_IEEE80211AC
941 	if (full_config && conf->ieee80211ac &&
942 	    bss->ssid.security_policy == SECURITY_STATIC_WEP) {
943 		bss->disable_11ac = 1;
944 		wpa_printf(MSG_ERROR,
945 			   "VHT (IEEE 802.11ac) with WEP is not allowed, disabling VHT capabilities");
946 	}
947 
948 	if (full_config && conf->ieee80211ac && bss->wpa &&
949 	    !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
950 	    !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
951 				   WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
952 	{
953 		bss->disable_11ac = 1;
954 		wpa_printf(MSG_ERROR,
955 			   "VHT (IEEE 802.11ac) with WPA/WPA2 requires CCMP/GCMP to be enabled, disabling VHT capabilities");
956 	}
957 #endif /* CONFIG_IEEE80211AC */
958 
959 #ifdef CONFIG_WPS
960 	if (full_config && bss->wps_state && bss->ignore_broadcast_ssid) {
961 		wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid "
962 			   "configuration forced WPS to be disabled");
963 		bss->wps_state = 0;
964 	}
965 
966 	if (full_config && bss->wps_state &&
967 	    bss->ssid.wep.keys_set && bss->wpa == 0) {
968 		wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be "
969 			   "disabled");
970 		bss->wps_state = 0;
971 	}
972 
973 	if (full_config && bss->wps_state && bss->wpa &&
974 	    (!(bss->wpa & 2) ||
975 	     !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
976 				    WPA_CIPHER_CCMP_256 |
977 				    WPA_CIPHER_GCMP_256)))) {
978 		wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without "
979 			   "WPA2/CCMP/GCMP forced WPS to be disabled");
980 		bss->wps_state = 0;
981 	}
982 #endif /* CONFIG_WPS */
983 
984 #ifdef CONFIG_HS20
985 	if (full_config && bss->hs20 &&
986 	    (!(bss->wpa & 2) ||
987 	     !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
988 				    WPA_CIPHER_CCMP_256 |
989 				    WPA_CIPHER_GCMP_256)))) {
990 		wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP "
991 			   "configuration is required for Hotspot 2.0 "
992 			   "functionality");
993 		return -1;
994 	}
995 #endif /* CONFIG_HS20 */
996 
997 #ifdef CONFIG_MBO
998 	if (full_config && bss->mbo_enabled && (bss->wpa & 2) &&
999 	    bss->ieee80211w == NO_MGMT_FRAME_PROTECTION) {
1000 		wpa_printf(MSG_ERROR,
1001 			   "MBO: PMF needs to be enabled whenever using WPA2 with MBO");
1002 		return -1;
1003 	}
1004 #endif /* CONFIG_MBO */
1005 
1006 	return 0;
1007 }
1008 
1009 
1010 static int hostapd_config_check_cw(struct hostapd_config *conf, int queue)
1011 {
1012 	int tx_cwmin = conf->tx_queue[queue].cwmin;
1013 	int tx_cwmax = conf->tx_queue[queue].cwmax;
1014 	int ac_cwmin = conf->wmm_ac_params[queue].cwmin;
1015 	int ac_cwmax = conf->wmm_ac_params[queue].cwmax;
1016 
1017 	if (tx_cwmin > tx_cwmax) {
1018 		wpa_printf(MSG_ERROR,
1019 			   "Invalid TX queue cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)",
1020 			   tx_cwmin, tx_cwmax);
1021 		return -1;
1022 	}
1023 	if (ac_cwmin > ac_cwmax) {
1024 		wpa_printf(MSG_ERROR,
1025 			   "Invalid WMM AC cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)",
1026 			   ac_cwmin, ac_cwmax);
1027 		return -1;
1028 	}
1029 	return 0;
1030 }
1031 
1032 
1033 int hostapd_config_check(struct hostapd_config *conf, int full_config)
1034 {
1035 	size_t i;
1036 
1037 	if (full_config && conf->ieee80211d &&
1038 	    (!conf->country[0] || !conf->country[1])) {
1039 		wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without "
1040 			   "setting the country_code");
1041 		return -1;
1042 	}
1043 
1044 	if (full_config && conf->ieee80211h && !conf->ieee80211d) {
1045 		wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without "
1046 			   "IEEE 802.11d enabled");
1047 		return -1;
1048 	}
1049 
1050 	if (full_config && conf->local_pwr_constraint != -1 &&
1051 	    !conf->ieee80211d) {
1052 		wpa_printf(MSG_ERROR, "Cannot add Power Constraint element without Country element");
1053 		return -1;
1054 	}
1055 
1056 	if (full_config && conf->spectrum_mgmt_required &&
1057 	    conf->local_pwr_constraint == -1) {
1058 		wpa_printf(MSG_ERROR, "Cannot set Spectrum Management bit without Country and Power Constraint elements");
1059 		return -1;
1060 	}
1061 
1062 	for (i = 0; i < NUM_TX_QUEUES; i++) {
1063 		if (hostapd_config_check_cw(conf, i))
1064 			return -1;
1065 	}
1066 
1067 	for (i = 0; i < conf->num_bss; i++) {
1068 		if (hostapd_config_check_bss(conf->bss[i], conf, full_config))
1069 			return -1;
1070 	}
1071 
1072 	return 0;
1073 }
1074 
1075 
1076 void hostapd_set_security_params(struct hostapd_bss_config *bss,
1077 				 int full_config)
1078 {
1079 	if (bss->individual_wep_key_len == 0) {
1080 		/* individual keys are not use; can use key idx0 for
1081 		 * broadcast keys */
1082 		bss->broadcast_key_idx_min = 0;
1083 	}
1084 
1085 	if ((bss->wpa & 2) && bss->rsn_pairwise == 0)
1086 		bss->rsn_pairwise = bss->wpa_pairwise;
1087 	if (bss->group_cipher)
1088 		bss->wpa_group = bss->group_cipher;
1089 	else
1090 		bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa,
1091 							    bss->wpa_pairwise,
1092 							    bss->rsn_pairwise);
1093 	if (!bss->wpa_group_rekey_set)
1094 		bss->wpa_group_rekey = bss->wpa_group == WPA_CIPHER_TKIP ?
1095 			600 : 86400;
1096 
1097 	if (full_config) {
1098 		bss->radius->auth_server = bss->radius->auth_servers;
1099 		bss->radius->acct_server = bss->radius->acct_servers;
1100 	}
1101 
1102 	if (bss->wpa && bss->ieee802_1x) {
1103 		bss->ssid.security_policy = SECURITY_WPA;
1104 	} else if (bss->wpa) {
1105 		bss->ssid.security_policy = SECURITY_WPA_PSK;
1106 	} else if (bss->ieee802_1x) {
1107 		int cipher = WPA_CIPHER_NONE;
1108 		bss->ssid.security_policy = SECURITY_IEEE_802_1X;
1109 		bss->ssid.wep.default_len = bss->default_wep_key_len;
1110 		if (full_config && bss->default_wep_key_len) {
1111 			cipher = bss->default_wep_key_len >= 13 ?
1112 				WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40;
1113 		} else if (full_config && bss->ssid.wep.keys_set) {
1114 			if (bss->ssid.wep.len[0] >= 13)
1115 				cipher = WPA_CIPHER_WEP104;
1116 			else
1117 				cipher = WPA_CIPHER_WEP40;
1118 		}
1119 		bss->wpa_group = cipher;
1120 		bss->wpa_pairwise = cipher;
1121 		bss->rsn_pairwise = cipher;
1122 		if (full_config)
1123 			bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
1124 	} else if (bss->ssid.wep.keys_set) {
1125 		int cipher = WPA_CIPHER_WEP40;
1126 		if (bss->ssid.wep.len[0] >= 13)
1127 			cipher = WPA_CIPHER_WEP104;
1128 		bss->ssid.security_policy = SECURITY_STATIC_WEP;
1129 		bss->wpa_group = cipher;
1130 		bss->wpa_pairwise = cipher;
1131 		bss->rsn_pairwise = cipher;
1132 		if (full_config)
1133 			bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE;
1134 	} else if (bss->osen) {
1135 		bss->ssid.security_policy = SECURITY_OSEN;
1136 		bss->wpa_group = WPA_CIPHER_CCMP;
1137 		bss->wpa_pairwise = 0;
1138 		bss->rsn_pairwise = WPA_CIPHER_CCMP;
1139 	} else {
1140 		bss->ssid.security_policy = SECURITY_PLAINTEXT;
1141 		if (full_config) {
1142 			bss->wpa_group = WPA_CIPHER_NONE;
1143 			bss->wpa_pairwise = WPA_CIPHER_NONE;
1144 			bss->rsn_pairwise = WPA_CIPHER_NONE;
1145 			bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE;
1146 		}
1147 	}
1148 }
1149