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
hostapd_config_free_vlan(struct hostapd_bss_config * bss)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
hostapd_config_defaults_bss(struct hostapd_bss_config * bss)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 bss->send_probe_response = 1;
136
137 #ifdef CONFIG_HS20
138 bss->hs20_release = (HS20_VERSION >> 4) + 1;
139 #endif /* CONFIG_HS20 */
140
141 /* Default to strict CRL checking. */
142 bss->check_crl_strict = 1;
143 }
144
145
hostapd_config_defaults(void)146 struct hostapd_config * hostapd_config_defaults(void)
147 {
148 #define ecw2cw(ecw) ((1 << (ecw)) - 1)
149
150 struct hostapd_config *conf;
151 struct hostapd_bss_config *bss;
152 const int aCWmin = 4, aCWmax = 10;
153 const struct hostapd_wmm_ac_params ac_bk =
154 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
155 const struct hostapd_wmm_ac_params ac_be =
156 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
157 const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
158 { aCWmin - 1, aCWmin, 2, 3008 / 32, 0 };
159 const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
160 { aCWmin - 2, aCWmin - 1, 2, 1504 / 32, 0 };
161 const struct hostapd_tx_queue_params txq_bk =
162 { 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 };
163 const struct hostapd_tx_queue_params txq_be =
164 { 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0};
165 const struct hostapd_tx_queue_params txq_vi =
166 { 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30};
167 const struct hostapd_tx_queue_params txq_vo =
168 { 1, (ecw2cw(aCWmin) + 1) / 4 - 1,
169 (ecw2cw(aCWmin) + 1) / 2 - 1, 15};
170
171 #undef ecw2cw
172
173 conf = os_zalloc(sizeof(*conf));
174 bss = os_zalloc(sizeof(*bss));
175 if (conf == NULL || bss == NULL) {
176 wpa_printf(MSG_ERROR, "Failed to allocate memory for "
177 "configuration data.");
178 os_free(conf);
179 os_free(bss);
180 return NULL;
181 }
182 conf->bss = os_calloc(1, sizeof(struct hostapd_bss_config *));
183 if (conf->bss == NULL) {
184 os_free(conf);
185 os_free(bss);
186 return NULL;
187 }
188 conf->bss[0] = bss;
189
190 bss->radius = os_zalloc(sizeof(*bss->radius));
191 if (bss->radius == NULL) {
192 os_free(conf->bss);
193 os_free(conf);
194 os_free(bss);
195 return NULL;
196 }
197
198 hostapd_config_defaults_bss(bss);
199
200 conf->num_bss = 1;
201
202 conf->beacon_int = 100;
203 conf->rts_threshold = -2; /* use driver default: 2347 */
204 conf->fragm_threshold = -2; /* user driver default: 2346 */
205 /* Set to invalid value means do not add Power Constraint IE */
206 conf->local_pwr_constraint = -1;
207
208 conf->wmm_ac_params[0] = ac_be;
209 conf->wmm_ac_params[1] = ac_bk;
210 conf->wmm_ac_params[2] = ac_vi;
211 conf->wmm_ac_params[3] = ac_vo;
212
213 conf->tx_queue[0] = txq_vo;
214 conf->tx_queue[1] = txq_vi;
215 conf->tx_queue[2] = txq_be;
216 conf->tx_queue[3] = txq_bk;
217
218 conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED;
219
220 conf->ap_table_max_size = 255;
221 conf->ap_table_expiration_time = 60;
222 conf->track_sta_max_age = 180;
223
224 #ifdef CONFIG_TESTING_OPTIONS
225 conf->ignore_probe_probability = 0.0;
226 conf->ignore_auth_probability = 0.0;
227 conf->ignore_assoc_probability = 0.0;
228 conf->ignore_reassoc_probability = 0.0;
229 conf->corrupt_gtk_rekey_mic_probability = 0.0;
230 conf->ecsa_ie_only = 0;
231 #endif /* CONFIG_TESTING_OPTIONS */
232
233 conf->acs = 0;
234 conf->acs_ch_list.num = 0;
235 #ifdef CONFIG_ACS
236 conf->acs_num_scans = 5;
237 #endif /* CONFIG_ACS */
238
239 /* The third octet of the country string uses an ASCII space character
240 * by default to indicate that the regulations encompass all
241 * environments for the current frequency band in the country. */
242 conf->country[2] = ' ';
243
244 conf->rssi_reject_assoc_rssi = 0;
245 conf->rssi_reject_assoc_timeout = 30;
246
247 return conf;
248 }
249
250
hostapd_mac_comp(const void * a,const void * b)251 int hostapd_mac_comp(const void *a, const void *b)
252 {
253 return os_memcmp(a, b, sizeof(macaddr));
254 }
255
256
hostapd_config_read_wpa_psk(const char * fname,struct hostapd_ssid * ssid)257 static int hostapd_config_read_wpa_psk(const char *fname,
258 struct hostapd_ssid *ssid)
259 {
260 FILE *f;
261 char buf[128], *pos;
262 const char *keyid;
263 char *context;
264 char *context2;
265 char *token;
266 char *name;
267 char *value;
268 int line = 0, ret = 0, len, ok;
269 u8 addr[ETH_ALEN];
270 struct hostapd_wpa_psk *psk;
271
272 if (!fname)
273 return 0;
274
275 f = fopen(fname, "r");
276 if (!f) {
277 wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname);
278 return -1;
279 }
280
281 while (fgets(buf, sizeof(buf), f)) {
282 int vlan_id = 0;
283
284 line++;
285
286 if (buf[0] == '#')
287 continue;
288 pos = buf;
289 while (*pos != '\0') {
290 if (*pos == '\n') {
291 *pos = '\0';
292 break;
293 }
294 pos++;
295 }
296 if (buf[0] == '\0')
297 continue;
298
299 context = NULL;
300 keyid = NULL;
301 while ((token = str_token(buf, " ", &context))) {
302 if (!os_strchr(token, '='))
303 break;
304 context2 = NULL;
305 name = str_token(token, "=", &context2);
306 if (!name)
307 break;
308 value = str_token(token, "", &context2);
309 if (!value)
310 value = "";
311 if (!os_strcmp(name, "keyid")) {
312 keyid = value;
313 } else if (!os_strcmp(name, "vlanid")) {
314 vlan_id = atoi(value);
315 } else {
316 wpa_printf(MSG_ERROR,
317 "Unrecognized '%s=%s' on line %d in '%s'",
318 name, value, line, fname);
319 ret = -1;
320 break;
321 }
322 }
323
324 if (ret == -1)
325 break;
326
327 if (!token)
328 token = "";
329 if (hwaddr_aton(token, addr)) {
330 wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on "
331 "line %d in '%s'", token, line, fname);
332 ret = -1;
333 break;
334 }
335
336 psk = os_zalloc(sizeof(*psk));
337 if (psk == NULL) {
338 wpa_printf(MSG_ERROR, "WPA PSK allocation failed");
339 ret = -1;
340 break;
341 }
342 psk->vlan_id = vlan_id;
343 if (is_zero_ether_addr(addr))
344 psk->group = 1;
345 else
346 os_memcpy(psk->addr, addr, ETH_ALEN);
347
348 pos = str_token(buf, "", &context);
349 if (!pos) {
350 wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'",
351 line, fname);
352 os_free(psk);
353 ret = -1;
354 break;
355 }
356
357 ok = 0;
358 len = os_strlen(pos);
359 if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
360 ok = 1;
361 else if (len >= 8 && len < 64) {
362 pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len,
363 4096, psk->psk, PMK_LEN);
364 ok = 1;
365 }
366 if (!ok) {
367 wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in "
368 "'%s'", pos, line, fname);
369 os_free(psk);
370 ret = -1;
371 break;
372 }
373
374 if (keyid) {
375 len = os_strlcpy(psk->keyid, keyid, sizeof(psk->keyid));
376 if ((size_t) len >= sizeof(psk->keyid)) {
377 wpa_printf(MSG_ERROR,
378 "PSK keyid too long on line %d in '%s'",
379 line, fname);
380 os_free(psk);
381 ret = -1;
382 break;
383 }
384 }
385
386 psk->next = ssid->wpa_psk;
387 ssid->wpa_psk = psk;
388 }
389
390 fclose(f);
391
392 return ret;
393 }
394
395
hostapd_derive_psk(struct hostapd_ssid * ssid)396 static int hostapd_derive_psk(struct hostapd_ssid *ssid)
397 {
398 ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
399 if (ssid->wpa_psk == NULL) {
400 wpa_printf(MSG_ERROR, "Unable to alloc space for PSK");
401 return -1;
402 }
403 wpa_hexdump_ascii(MSG_DEBUG, "SSID",
404 (u8 *) ssid->ssid, ssid->ssid_len);
405 wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)",
406 (u8 *) ssid->wpa_passphrase,
407 os_strlen(ssid->wpa_passphrase));
408 pbkdf2_sha1(ssid->wpa_passphrase,
409 ssid->ssid, ssid->ssid_len,
410 4096, ssid->wpa_psk->psk, PMK_LEN);
411 wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)",
412 ssid->wpa_psk->psk, PMK_LEN);
413 return 0;
414 }
415
416
hostapd_setup_wpa_psk(struct hostapd_bss_config * conf)417 int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
418 {
419 struct hostapd_ssid *ssid = &conf->ssid;
420
421 if (ssid->wpa_passphrase != NULL) {
422 if (ssid->wpa_psk != NULL) {
423 wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK "
424 "instead of passphrase");
425 } else {
426 wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on "
427 "passphrase");
428 if (hostapd_derive_psk(ssid) < 0)
429 return -1;
430 }
431 ssid->wpa_psk->group = 1;
432 }
433
434 return hostapd_config_read_wpa_psk(ssid->wpa_psk_file, &conf->ssid);
435 }
436
437
hostapd_config_free_radius(struct hostapd_radius_server * servers,int num_servers)438 static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
439 int num_servers)
440 {
441 int i;
442
443 for (i = 0; i < num_servers; i++) {
444 os_free(servers[i].shared_secret);
445 }
446 os_free(servers);
447 }
448
449
450 struct hostapd_radius_attr *
hostapd_config_get_radius_attr(struct hostapd_radius_attr * attr,u8 type)451 hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type)
452 {
453 for (; attr; attr = attr->next) {
454 if (attr->type == type)
455 return attr;
456 }
457 return NULL;
458 }
459
460
hostapd_config_free_radius_attr(struct hostapd_radius_attr * attr)461 static void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr)
462 {
463 struct hostapd_radius_attr *prev;
464
465 while (attr) {
466 prev = attr;
467 attr = attr->next;
468 wpabuf_free(prev->val);
469 os_free(prev);
470 }
471 }
472
473
hostapd_config_free_eap_user(struct hostapd_eap_user * user)474 void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
475 {
476 hostapd_config_free_radius_attr(user->accept_attr);
477 os_free(user->identity);
478 bin_clear_free(user->password, user->password_len);
479 bin_clear_free(user->salt, user->salt_len);
480 os_free(user);
481 }
482
483
hostapd_config_free_eap_users(struct hostapd_eap_user * user)484 void hostapd_config_free_eap_users(struct hostapd_eap_user *user)
485 {
486 struct hostapd_eap_user *prev_user;
487
488 while (user) {
489 prev_user = user;
490 user = user->next;
491 hostapd_config_free_eap_user(prev_user);
492 }
493 }
494
495
hostapd_config_free_wep(struct hostapd_wep_keys * keys)496 static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
497 {
498 int i;
499 for (i = 0; i < NUM_WEP_KEYS; i++) {
500 bin_clear_free(keys->key[i], keys->len[i]);
501 keys->key[i] = NULL;
502 }
503 }
504
505
hostapd_config_clear_wpa_psk(struct hostapd_wpa_psk ** l)506 void hostapd_config_clear_wpa_psk(struct hostapd_wpa_psk **l)
507 {
508 struct hostapd_wpa_psk *psk, *tmp;
509
510 for (psk = *l; psk;) {
511 tmp = psk;
512 psk = psk->next;
513 bin_clear_free(tmp, sizeof(*tmp));
514 }
515 *l = NULL;
516 }
517
518
hostapd_config_free_anqp_elem(struct hostapd_bss_config * conf)519 static void hostapd_config_free_anqp_elem(struct hostapd_bss_config *conf)
520 {
521 struct anqp_element *elem;
522
523 while ((elem = dl_list_first(&conf->anqp_elem, struct anqp_element,
524 list))) {
525 dl_list_del(&elem->list);
526 wpabuf_free(elem->payload);
527 os_free(elem);
528 }
529 }
530
531
hostapd_config_free_fils_realms(struct hostapd_bss_config * conf)532 static void hostapd_config_free_fils_realms(struct hostapd_bss_config *conf)
533 {
534 #ifdef CONFIG_FILS
535 struct fils_realm *realm;
536
537 while ((realm = dl_list_first(&conf->fils_realms, struct fils_realm,
538 list))) {
539 dl_list_del(&realm->list);
540 os_free(realm);
541 }
542 #endif /* CONFIG_FILS */
543 }
544
545
hostapd_config_free_sae_passwords(struct hostapd_bss_config * conf)546 static void hostapd_config_free_sae_passwords(struct hostapd_bss_config *conf)
547 {
548 struct sae_password_entry *pw, *tmp;
549
550 pw = conf->sae_passwords;
551 conf->sae_passwords = NULL;
552 while (pw) {
553 tmp = pw;
554 pw = pw->next;
555 str_clear_free(tmp->password);
556 os_free(tmp->identifier);
557 os_free(tmp);
558 }
559 }
560
561
hostapd_config_free_bss(struct hostapd_bss_config * conf)562 void hostapd_config_free_bss(struct hostapd_bss_config *conf)
563 {
564 if (conf == NULL)
565 return;
566
567 hostapd_config_clear_wpa_psk(&conf->ssid.wpa_psk);
568
569 str_clear_free(conf->ssid.wpa_passphrase);
570 os_free(conf->ssid.wpa_psk_file);
571 hostapd_config_free_wep(&conf->ssid.wep);
572 #ifdef CONFIG_FULL_DYNAMIC_VLAN
573 os_free(conf->ssid.vlan_tagged_interface);
574 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
575
576 hostapd_config_free_eap_users(conf->eap_user);
577 os_free(conf->eap_user_sqlite);
578
579 os_free(conf->eap_req_id_text);
580 os_free(conf->erp_domain);
581 os_free(conf->accept_mac);
582 os_free(conf->deny_mac);
583 os_free(conf->nas_identifier);
584 if (conf->radius) {
585 hostapd_config_free_radius(conf->radius->auth_servers,
586 conf->radius->num_auth_servers);
587 hostapd_config_free_radius(conf->radius->acct_servers,
588 conf->radius->num_acct_servers);
589 }
590 hostapd_config_free_radius_attr(conf->radius_auth_req_attr);
591 hostapd_config_free_radius_attr(conf->radius_acct_req_attr);
592 os_free(conf->rsn_preauth_interfaces);
593 os_free(conf->ctrl_interface);
594 os_free(conf->ca_cert);
595 os_free(conf->server_cert);
596 os_free(conf->private_key);
597 os_free(conf->private_key_passwd);
598 os_free(conf->check_cert_subject);
599 os_free(conf->ocsp_stapling_response);
600 os_free(conf->ocsp_stapling_response_multi);
601 os_free(conf->dh_file);
602 os_free(conf->openssl_ciphers);
603 os_free(conf->openssl_ecdh_curves);
604 os_free(conf->pac_opaque_encr_key);
605 os_free(conf->eap_fast_a_id);
606 os_free(conf->eap_fast_a_id_info);
607 os_free(conf->eap_sim_db);
608 os_free(conf->radius_server_clients);
609 os_free(conf->radius);
610 os_free(conf->radius_das_shared_secret);
611 hostapd_config_free_vlan(conf);
612 os_free(conf->time_zone);
613
614 #ifdef CONFIG_IEEE80211R_AP
615 {
616 struct ft_remote_r0kh *r0kh, *r0kh_prev;
617 struct ft_remote_r1kh *r1kh, *r1kh_prev;
618
619 r0kh = conf->r0kh_list;
620 conf->r0kh_list = NULL;
621 while (r0kh) {
622 r0kh_prev = r0kh;
623 r0kh = r0kh->next;
624 os_free(r0kh_prev);
625 }
626
627 r1kh = conf->r1kh_list;
628 conf->r1kh_list = NULL;
629 while (r1kh) {
630 r1kh_prev = r1kh;
631 r1kh = r1kh->next;
632 os_free(r1kh_prev);
633 }
634 }
635 #endif /* CONFIG_IEEE80211R_AP */
636
637 #ifdef CONFIG_WPS
638 os_free(conf->wps_pin_requests);
639 os_free(conf->device_name);
640 os_free(conf->manufacturer);
641 os_free(conf->model_name);
642 os_free(conf->model_number);
643 os_free(conf->serial_number);
644 os_free(conf->config_methods);
645 os_free(conf->ap_pin);
646 os_free(conf->extra_cred);
647 os_free(conf->ap_settings);
648 hostapd_config_clear_wpa_psk(&conf->multi_ap_backhaul_ssid.wpa_psk);
649 str_clear_free(conf->multi_ap_backhaul_ssid.wpa_passphrase);
650 os_free(conf->upnp_iface);
651 os_free(conf->friendly_name);
652 os_free(conf->manufacturer_url);
653 os_free(conf->model_description);
654 os_free(conf->model_url);
655 os_free(conf->upc);
656 {
657 unsigned int i;
658
659 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++)
660 wpabuf_free(conf->wps_vendor_ext[i]);
661 }
662 wpabuf_free(conf->wps_nfc_dh_pubkey);
663 wpabuf_free(conf->wps_nfc_dh_privkey);
664 wpabuf_free(conf->wps_nfc_dev_pw);
665 #endif /* CONFIG_WPS */
666
667 os_free(conf->roaming_consortium);
668 os_free(conf->venue_name);
669 os_free(conf->venue_url);
670 os_free(conf->nai_realm_data);
671 os_free(conf->network_auth_type);
672 os_free(conf->anqp_3gpp_cell_net);
673 os_free(conf->domain_name);
674 hostapd_config_free_anqp_elem(conf);
675
676 #ifdef CONFIG_RADIUS_TEST
677 os_free(conf->dump_msk_file);
678 #endif /* CONFIG_RADIUS_TEST */
679
680 #ifdef CONFIG_HS20
681 os_free(conf->hs20_oper_friendly_name);
682 os_free(conf->hs20_wan_metrics);
683 os_free(conf->hs20_connection_capability);
684 os_free(conf->hs20_operating_class);
685 os_free(conf->hs20_icons);
686 if (conf->hs20_osu_providers) {
687 size_t i;
688 for (i = 0; i < conf->hs20_osu_providers_count; i++) {
689 struct hs20_osu_provider *p;
690 size_t j;
691 p = &conf->hs20_osu_providers[i];
692 os_free(p->friendly_name);
693 os_free(p->server_uri);
694 os_free(p->method_list);
695 for (j = 0; j < p->icons_count; j++)
696 os_free(p->icons[j]);
697 os_free(p->icons);
698 os_free(p->osu_nai);
699 os_free(p->osu_nai2);
700 os_free(p->service_desc);
701 }
702 os_free(conf->hs20_osu_providers);
703 }
704 if (conf->hs20_operator_icon) {
705 size_t i;
706
707 for (i = 0; i < conf->hs20_operator_icon_count; i++)
708 os_free(conf->hs20_operator_icon[i]);
709 os_free(conf->hs20_operator_icon);
710 }
711 os_free(conf->subscr_remediation_url);
712 os_free(conf->hs20_sim_provisioning_url);
713 os_free(conf->t_c_filename);
714 os_free(conf->t_c_server_url);
715 #endif /* CONFIG_HS20 */
716
717 wpabuf_free(conf->vendor_elements);
718 wpabuf_free(conf->assocresp_elements);
719
720 os_free(conf->sae_groups);
721 #ifdef CONFIG_OWE
722 os_free(conf->owe_groups);
723 #endif /* CONFIG_OWE */
724
725 os_free(conf->wowlan_triggers);
726
727 os_free(conf->server_id);
728
729 #ifdef CONFIG_TESTING_OPTIONS
730 wpabuf_free(conf->own_ie_override);
731 wpabuf_free(conf->sae_commit_override);
732 #endif /* CONFIG_TESTING_OPTIONS */
733
734 os_free(conf->no_probe_resp_if_seen_on);
735 os_free(conf->no_auth_if_seen_on);
736
737 hostapd_config_free_fils_realms(conf);
738
739 #ifdef CONFIG_DPP
740 os_free(conf->dpp_connector);
741 wpabuf_free(conf->dpp_netaccesskey);
742 wpabuf_free(conf->dpp_csign);
743 #endif /* CONFIG_DPP */
744
745 hostapd_config_free_sae_passwords(conf);
746
747 os_free(conf);
748 }
749
750
751 /**
752 * hostapd_config_free - Free hostapd configuration
753 * @conf: Configuration data from hostapd_config_read().
754 */
hostapd_config_free(struct hostapd_config * conf)755 void hostapd_config_free(struct hostapd_config *conf)
756 {
757 size_t i;
758
759 if (conf == NULL)
760 return;
761
762 for (i = 0; i < conf->num_bss; i++)
763 hostapd_config_free_bss(conf->bss[i]);
764 os_free(conf->bss);
765 os_free(conf->supported_rates);
766 os_free(conf->basic_rates);
767 os_free(conf->acs_ch_list.range);
768 os_free(conf->driver_params);
769 #ifdef CONFIG_ACS
770 os_free(conf->acs_chan_bias);
771 #endif /* CONFIG_ACS */
772 wpabuf_free(conf->lci);
773 wpabuf_free(conf->civic);
774
775 os_free(conf);
776 }
777
778
779 /**
780 * hostapd_maclist_found - Find a MAC address from a list
781 * @list: MAC address list
782 * @num_entries: Number of addresses in the list
783 * @addr: Address to search for
784 * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed
785 * Returns: 1 if address is in the list or 0 if not.
786 *
787 * Perform a binary search for given MAC address from a pre-sorted list.
788 */
hostapd_maclist_found(struct mac_acl_entry * list,int num_entries,const u8 * addr,struct vlan_description * vlan_id)789 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries,
790 const u8 *addr, struct vlan_description *vlan_id)
791 {
792 int start, end, middle, res;
793
794 start = 0;
795 end = num_entries - 1;
796
797 while (start <= end) {
798 middle = (start + end) / 2;
799 res = os_memcmp(list[middle].addr, addr, ETH_ALEN);
800 if (res == 0) {
801 if (vlan_id)
802 *vlan_id = list[middle].vlan_id;
803 return 1;
804 }
805 if (res < 0)
806 start = middle + 1;
807 else
808 end = middle - 1;
809 }
810
811 return 0;
812 }
813
814
hostapd_rate_found(int * list,int rate)815 int hostapd_rate_found(int *list, int rate)
816 {
817 int i;
818
819 if (list == NULL)
820 return 0;
821
822 for (i = 0; list[i] >= 0; i++)
823 if (list[i] == rate)
824 return 1;
825
826 return 0;
827 }
828
829
hostapd_vlan_valid(struct hostapd_vlan * vlan,struct vlan_description * vlan_desc)830 int hostapd_vlan_valid(struct hostapd_vlan *vlan,
831 struct vlan_description *vlan_desc)
832 {
833 struct hostapd_vlan *v = vlan;
834 int i;
835
836 if (!vlan_desc->notempty || vlan_desc->untagged < 0 ||
837 vlan_desc->untagged > MAX_VLAN_ID)
838 return 0;
839 for (i = 0; i < MAX_NUM_TAGGED_VLAN; i++) {
840 if (vlan_desc->tagged[i] < 0 ||
841 vlan_desc->tagged[i] > MAX_VLAN_ID)
842 return 0;
843 }
844 if (!vlan_desc->untagged && !vlan_desc->tagged[0])
845 return 0;
846
847 while (v) {
848 if (!vlan_compare(&v->vlan_desc, vlan_desc) ||
849 v->vlan_id == VLAN_ID_WILDCARD)
850 return 1;
851 v = v->next;
852 }
853 return 0;
854 }
855
856
hostapd_get_vlan_id_ifname(struct hostapd_vlan * vlan,int vlan_id)857 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id)
858 {
859 struct hostapd_vlan *v = vlan;
860 while (v) {
861 if (v->vlan_id == vlan_id)
862 return v->ifname;
863 v = v->next;
864 }
865 return NULL;
866 }
867
868
hostapd_get_psk(const struct hostapd_bss_config * conf,const u8 * addr,const u8 * p2p_dev_addr,const u8 * prev_psk,int * vlan_id)869 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
870 const u8 *addr, const u8 *p2p_dev_addr,
871 const u8 *prev_psk, int *vlan_id)
872 {
873 struct hostapd_wpa_psk *psk;
874 int next_ok = prev_psk == NULL;
875
876 if (vlan_id)
877 *vlan_id = 0;
878
879 if (p2p_dev_addr && !is_zero_ether_addr(p2p_dev_addr)) {
880 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
881 " p2p_dev_addr=" MACSTR " prev_psk=%p",
882 MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk);
883 addr = NULL; /* Use P2P Device Address for matching */
884 } else {
885 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
886 " prev_psk=%p",
887 MAC2STR(addr), prev_psk);
888 }
889
890 for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
891 if (next_ok &&
892 (psk->group ||
893 (addr && os_memcmp(psk->addr, addr, ETH_ALEN) == 0) ||
894 (!addr && p2p_dev_addr &&
895 os_memcmp(psk->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) ==
896 0))) {
897 if (vlan_id)
898 *vlan_id = psk->vlan_id;
899 return psk->psk;
900 }
901
902 if (psk->psk == prev_psk)
903 next_ok = 1;
904 }
905
906 return NULL;
907 }
908
909
hostapd_config_check_bss(struct hostapd_bss_config * bss,struct hostapd_config * conf,int full_config)910 static int hostapd_config_check_bss(struct hostapd_bss_config *bss,
911 struct hostapd_config *conf,
912 int full_config)
913 {
914 if (full_config && bss->ieee802_1x && !bss->eap_server &&
915 !bss->radius->auth_servers) {
916 wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no "
917 "EAP authenticator configured).");
918 return -1;
919 }
920
921 if (bss->wpa) {
922 int wep, i;
923
924 wep = bss->default_wep_key_len > 0 ||
925 bss->individual_wep_key_len > 0;
926 for (i = 0; i < NUM_WEP_KEYS; i++) {
927 if (bss->ssid.wep.keys_set) {
928 wep = 1;
929 break;
930 }
931 }
932
933 if (wep) {
934 wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported");
935 return -1;
936 }
937 }
938
939 if (full_config && bss->wpa &&
940 bss->wpa_psk_radius != PSK_RADIUS_IGNORED &&
941 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) {
942 wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no "
943 "RADIUS checking (macaddr_acl=2) enabled.");
944 return -1;
945 }
946
947 if (full_config && bss->wpa && (bss->wpa_key_mgmt & WPA_KEY_MGMT_PSK) &&
948 bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL &&
949 bss->ssid.wpa_psk_file == NULL &&
950 (bss->wpa_psk_radius != PSK_RADIUS_REQUIRED ||
951 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) {
952 wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase "
953 "is not configured.");
954 return -1;
955 }
956
957 if (full_config && !is_zero_ether_addr(bss->bssid)) {
958 size_t i;
959
960 for (i = 0; i < conf->num_bss; i++) {
961 if (conf->bss[i] != bss &&
962 (hostapd_mac_comp(conf->bss[i]->bssid,
963 bss->bssid) == 0)) {
964 wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR
965 " on interface '%s' and '%s'.",
966 MAC2STR(bss->bssid),
967 conf->bss[i]->iface, bss->iface);
968 return -1;
969 }
970 }
971 }
972
973 #ifdef CONFIG_IEEE80211R_AP
974 if (full_config && wpa_key_mgmt_ft(bss->wpa_key_mgmt) &&
975 (bss->nas_identifier == NULL ||
976 os_strlen(bss->nas_identifier) < 1 ||
977 os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) {
978 wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires "
979 "nas_identifier to be configured as a 1..48 octet "
980 "string");
981 return -1;
982 }
983 #endif /* CONFIG_IEEE80211R_AP */
984
985 #ifdef CONFIG_IEEE80211N
986 if (full_config && conf->ieee80211n &&
987 conf->hw_mode == HOSTAPD_MODE_IEEE80211B) {
988 bss->disable_11n = 1;
989 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not "
990 "allowed, disabling HT capabilities");
991 }
992
993 if (full_config && conf->ieee80211n &&
994 bss->ssid.security_policy == SECURITY_STATIC_WEP) {
995 bss->disable_11n = 1;
996 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not "
997 "allowed, disabling HT capabilities");
998 }
999
1000 if (full_config && conf->ieee80211n && bss->wpa &&
1001 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
1002 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1003 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
1004 {
1005 bss->disable_11n = 1;
1006 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 "
1007 "requires CCMP/GCMP to be enabled, disabling HT "
1008 "capabilities");
1009 }
1010 #endif /* CONFIG_IEEE80211N */
1011
1012 #ifdef CONFIG_IEEE80211AC
1013 if (full_config && conf->ieee80211ac &&
1014 bss->ssid.security_policy == SECURITY_STATIC_WEP) {
1015 bss->disable_11ac = 1;
1016 wpa_printf(MSG_ERROR,
1017 "VHT (IEEE 802.11ac) with WEP is not allowed, disabling VHT capabilities");
1018 }
1019
1020 if (full_config && conf->ieee80211ac && bss->wpa &&
1021 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
1022 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1023 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
1024 {
1025 bss->disable_11ac = 1;
1026 wpa_printf(MSG_ERROR,
1027 "VHT (IEEE 802.11ac) with WPA/WPA2 requires CCMP/GCMP to be enabled, disabling VHT capabilities");
1028 }
1029 #endif /* CONFIG_IEEE80211AC */
1030
1031 #ifdef CONFIG_WPS
1032 if (full_config && bss->wps_state && bss->ignore_broadcast_ssid) {
1033 wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid "
1034 "configuration forced WPS to be disabled");
1035 bss->wps_state = 0;
1036 }
1037
1038 if (full_config && bss->wps_state &&
1039 bss->ssid.wep.keys_set && bss->wpa == 0) {
1040 wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be "
1041 "disabled");
1042 bss->wps_state = 0;
1043 }
1044
1045 if (full_config && bss->wps_state && bss->wpa &&
1046 (!(bss->wpa & 2) ||
1047 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1048 WPA_CIPHER_CCMP_256 |
1049 WPA_CIPHER_GCMP_256)))) {
1050 wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without "
1051 "WPA2/CCMP/GCMP forced WPS to be disabled");
1052 bss->wps_state = 0;
1053 }
1054 #endif /* CONFIG_WPS */
1055
1056 #ifdef CONFIG_HS20
1057 if (full_config && bss->hs20 &&
1058 (!(bss->wpa & 2) ||
1059 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1060 WPA_CIPHER_CCMP_256 |
1061 WPA_CIPHER_GCMP_256)))) {
1062 wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP "
1063 "configuration is required for Hotspot 2.0 "
1064 "functionality");
1065 return -1;
1066 }
1067 #endif /* CONFIG_HS20 */
1068
1069 #ifdef CONFIG_MBO
1070 if (full_config && bss->mbo_enabled && (bss->wpa & 2) &&
1071 bss->ieee80211w == NO_MGMT_FRAME_PROTECTION) {
1072 wpa_printf(MSG_ERROR,
1073 "MBO: PMF needs to be enabled whenever using WPA2 with MBO");
1074 return -1;
1075 }
1076 #endif /* CONFIG_MBO */
1077
1078 #ifdef CONFIG_OCV
1079 if (full_config && bss->ieee80211w == NO_MGMT_FRAME_PROTECTION &&
1080 bss->ocv) {
1081 wpa_printf(MSG_ERROR,
1082 "OCV: PMF needs to be enabled whenever using OCV");
1083 return -1;
1084 }
1085 #endif /* CONFIG_OCV */
1086
1087 return 0;
1088 }
1089
1090
hostapd_config_check_cw(struct hostapd_config * conf,int queue)1091 static int hostapd_config_check_cw(struct hostapd_config *conf, int queue)
1092 {
1093 int tx_cwmin = conf->tx_queue[queue].cwmin;
1094 int tx_cwmax = conf->tx_queue[queue].cwmax;
1095 int ac_cwmin = conf->wmm_ac_params[queue].cwmin;
1096 int ac_cwmax = conf->wmm_ac_params[queue].cwmax;
1097
1098 if (tx_cwmin > tx_cwmax) {
1099 wpa_printf(MSG_ERROR,
1100 "Invalid TX queue cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)",
1101 tx_cwmin, tx_cwmax);
1102 return -1;
1103 }
1104 if (ac_cwmin > ac_cwmax) {
1105 wpa_printf(MSG_ERROR,
1106 "Invalid WMM AC cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)",
1107 ac_cwmin, ac_cwmax);
1108 return -1;
1109 }
1110 return 0;
1111 }
1112
1113
hostapd_config_check(struct hostapd_config * conf,int full_config)1114 int hostapd_config_check(struct hostapd_config *conf, int full_config)
1115 {
1116 size_t i;
1117
1118 if (full_config && conf->ieee80211d &&
1119 (!conf->country[0] || !conf->country[1])) {
1120 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without "
1121 "setting the country_code");
1122 return -1;
1123 }
1124
1125 if (full_config && conf->ieee80211h && !conf->ieee80211d) {
1126 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without "
1127 "IEEE 802.11d enabled");
1128 return -1;
1129 }
1130
1131 if (full_config && conf->local_pwr_constraint != -1 &&
1132 !conf->ieee80211d) {
1133 wpa_printf(MSG_ERROR, "Cannot add Power Constraint element without Country element");
1134 return -1;
1135 }
1136
1137 if (full_config && conf->spectrum_mgmt_required &&
1138 conf->local_pwr_constraint == -1) {
1139 wpa_printf(MSG_ERROR, "Cannot set Spectrum Management bit without Country and Power Constraint elements");
1140 return -1;
1141 }
1142
1143 for (i = 0; i < NUM_TX_QUEUES; i++) {
1144 if (hostapd_config_check_cw(conf, i))
1145 return -1;
1146 }
1147
1148 for (i = 0; i < conf->num_bss; i++) {
1149 if (hostapd_config_check_bss(conf->bss[i], conf, full_config))
1150 return -1;
1151 }
1152
1153 return 0;
1154 }
1155
1156
hostapd_set_security_params(struct hostapd_bss_config * bss,int full_config)1157 void hostapd_set_security_params(struct hostapd_bss_config *bss,
1158 int full_config)
1159 {
1160 if (bss->individual_wep_key_len == 0) {
1161 /* individual keys are not use; can use key idx0 for
1162 * broadcast keys */
1163 bss->broadcast_key_idx_min = 0;
1164 }
1165
1166 if ((bss->wpa & 2) && bss->rsn_pairwise == 0)
1167 bss->rsn_pairwise = bss->wpa_pairwise;
1168 if (bss->group_cipher)
1169 bss->wpa_group = bss->group_cipher;
1170 else
1171 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa,
1172 bss->wpa_pairwise,
1173 bss->rsn_pairwise);
1174 if (!bss->wpa_group_rekey_set)
1175 bss->wpa_group_rekey = bss->wpa_group == WPA_CIPHER_TKIP ?
1176 600 : 86400;
1177
1178 if (full_config) {
1179 bss->radius->auth_server = bss->radius->auth_servers;
1180 bss->radius->acct_server = bss->radius->acct_servers;
1181 }
1182
1183 if (bss->wpa && bss->ieee802_1x) {
1184 bss->ssid.security_policy = SECURITY_WPA;
1185 } else if (bss->wpa) {
1186 bss->ssid.security_policy = SECURITY_WPA_PSK;
1187 } else if (bss->ieee802_1x) {
1188 int cipher = WPA_CIPHER_NONE;
1189 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
1190 bss->ssid.wep.default_len = bss->default_wep_key_len;
1191 if (full_config && bss->default_wep_key_len) {
1192 cipher = bss->default_wep_key_len >= 13 ?
1193 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40;
1194 } else if (full_config && bss->ssid.wep.keys_set) {
1195 if (bss->ssid.wep.len[0] >= 13)
1196 cipher = WPA_CIPHER_WEP104;
1197 else
1198 cipher = WPA_CIPHER_WEP40;
1199 }
1200 bss->wpa_group = cipher;
1201 bss->wpa_pairwise = cipher;
1202 bss->rsn_pairwise = cipher;
1203 if (full_config)
1204 bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
1205 } else if (bss->ssid.wep.keys_set) {
1206 int cipher = WPA_CIPHER_WEP40;
1207 if (bss->ssid.wep.len[0] >= 13)
1208 cipher = WPA_CIPHER_WEP104;
1209 bss->ssid.security_policy = SECURITY_STATIC_WEP;
1210 bss->wpa_group = cipher;
1211 bss->wpa_pairwise = cipher;
1212 bss->rsn_pairwise = cipher;
1213 if (full_config)
1214 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE;
1215 } else if (bss->osen) {
1216 bss->ssid.security_policy = SECURITY_OSEN;
1217 bss->wpa_group = WPA_CIPHER_CCMP;
1218 bss->wpa_pairwise = 0;
1219 bss->rsn_pairwise = WPA_CIPHER_CCMP;
1220 } else {
1221 bss->ssid.security_policy = SECURITY_PLAINTEXT;
1222 if (full_config) {
1223 bss->wpa_group = WPA_CIPHER_NONE;
1224 bss->wpa_pairwise = WPA_CIPHER_NONE;
1225 bss->rsn_pairwise = WPA_CIPHER_NONE;
1226 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE;
1227 }
1228 }
1229 }
1230
1231
hostapd_sae_pw_id_in_use(struct hostapd_bss_config * conf)1232 int hostapd_sae_pw_id_in_use(struct hostapd_bss_config *conf)
1233 {
1234 int with_id = 0, without_id = 0;
1235 struct sae_password_entry *pw;
1236
1237 if (conf->ssid.wpa_passphrase)
1238 without_id = 1;
1239
1240 for (pw = conf->sae_passwords; pw; pw = pw->next) {
1241 if (pw->identifier)
1242 with_id = 1;
1243 else
1244 without_id = 1;
1245 if (with_id && without_id)
1246 break;
1247 }
1248
1249 if (with_id && !without_id)
1250 return 2;
1251 return with_id;
1252 }
1253