1 /*
2 * hostapd / Configuration helper functions
3 * Copyright (c) 2003-2022, 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/ieee802_1x_defs.h"
17 #include "common/eapol_common.h"
18 #include "common/dhcp.h"
19 #include "common/sae.h"
20 #include "eap_common/eap_wsc_common.h"
21 #include "eap_server/eap.h"
22 #include "wpa_auth.h"
23 #include "sta_info.h"
24 #include "airtime_policy.h"
25 #include "ap_config.h"
26
27
hostapd_config_free_vlan(struct hostapd_bss_config * bss)28 static void hostapd_config_free_vlan(struct hostapd_bss_config *bss)
29 {
30 struct hostapd_vlan *vlan, *prev;
31
32 vlan = bss->vlan;
33 prev = NULL;
34 while (vlan) {
35 prev = vlan;
36 vlan = vlan->next;
37 os_free(prev);
38 }
39
40 bss->vlan = NULL;
41 }
42
43
44 #ifndef DEFAULT_WPA_DISABLE_EAPOL_KEY_RETRIES
45 #define DEFAULT_WPA_DISABLE_EAPOL_KEY_RETRIES 0
46 #endif /* DEFAULT_WPA_DISABLE_EAPOL_KEY_RETRIES */
47
hostapd_config_defaults_bss(struct hostapd_bss_config * bss)48 void hostapd_config_defaults_bss(struct hostapd_bss_config *bss)
49 {
50 dl_list_init(&bss->anqp_elem);
51
52 bss->logger_syslog_level = HOSTAPD_LEVEL_INFO;
53 bss->logger_stdout_level = HOSTAPD_LEVEL_INFO;
54 bss->logger_syslog = (unsigned int) -1;
55 bss->logger_stdout = (unsigned int) -1;
56
57 #ifdef CONFIG_WEP
58 bss->auth_algs = WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED;
59
60 bss->wep_rekeying_period = 300;
61 /* use key0 in individual key and key1 in broadcast key */
62 bss->broadcast_key_idx_min = 1;
63 bss->broadcast_key_idx_max = 2;
64 #else /* CONFIG_WEP */
65 bss->auth_algs = WPA_AUTH_ALG_OPEN;
66 #endif /* CONFIG_WEP */
67 bss->eap_reauth_period = 3600;
68
69 bss->wpa_group_rekey = 600;
70 bss->wpa_gmk_rekey = 86400;
71 bss->wpa_deny_ptk0_rekey = PTK0_REKEY_ALLOW_ALWAYS;
72 bss->wpa_group_update_count = 4;
73 bss->wpa_pairwise_update_count = 4;
74 bss->wpa_disable_eapol_key_retries =
75 DEFAULT_WPA_DISABLE_EAPOL_KEY_RETRIES;
76 bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
77 #ifdef CONFIG_NO_TKIP
78 bss->wpa_pairwise = WPA_CIPHER_CCMP;
79 bss->wpa_group = WPA_CIPHER_CCMP;
80 #else /* CONFIG_NO_TKIP */
81 bss->wpa_pairwise = WPA_CIPHER_TKIP;
82 bss->wpa_group = WPA_CIPHER_TKIP;
83 #endif /* CONFIG_NO_TKIP */
84 bss->rsn_pairwise = 0;
85
86 bss->max_num_sta = MAX_STA_COUNT;
87
88 bss->dtim_period = 2;
89
90 bss->radius_server_auth_port = 1812;
91 bss->eap_sim_db_timeout = 1;
92 bss->eap_sim_id = 3;
93 bss->ap_max_inactivity = AP_MAX_INACTIVITY;
94 bss->eapol_version = EAPOL_VERSION;
95
96 bss->max_listen_interval = 65535;
97
98 bss->pwd_group = 19; /* ECC: GF(p=256) */
99
100 bss->assoc_sa_query_max_timeout = 1000;
101 bss->assoc_sa_query_retry_timeout = 201;
102 bss->group_mgmt_cipher = WPA_CIPHER_AES_128_CMAC;
103 #ifdef EAP_SERVER_FAST
104 /* both anonymous and authenticated provisioning */
105 bss->eap_fast_prov = 3;
106 bss->pac_key_lifetime = 7 * 24 * 60 * 60;
107 bss->pac_key_refresh_time = 1 * 24 * 60 * 60;
108 #endif /* EAP_SERVER_FAST */
109
110 /* Set to -1 as defaults depends on HT in setup */
111 bss->wmm_enabled = -1;
112
113 #ifdef CONFIG_IEEE80211R_AP
114 bss->ft_over_ds = 1;
115 bss->rkh_pos_timeout = 86400;
116 bss->rkh_neg_timeout = 60;
117 bss->rkh_pull_timeout = 1000;
118 bss->rkh_pull_retries = 4;
119 bss->r0_key_lifetime = 1209600;
120 #endif /* CONFIG_IEEE80211R_AP */
121
122 bss->radius_das_time_window = 300;
123
124 bss->anti_clogging_threshold = 5;
125 bss->sae_sync = 5;
126
127 bss->gas_frag_limit = 1400;
128
129 #ifdef CONFIG_FILS
130 dl_list_init(&bss->fils_realms);
131 bss->fils_hlp_wait_time = 30;
132 bss->dhcp_server_port = DHCP_SERVER_PORT;
133 bss->dhcp_relay_port = DHCP_SERVER_PORT;
134 bss->fils_discovery_min_int = 20;
135 #endif /* CONFIG_FILS */
136
137 bss->broadcast_deauth = 1;
138
139 #ifdef CONFIG_MBO
140 bss->mbo_cell_data_conn_pref = -1;
141 #endif /* CONFIG_MBO */
142
143 /* Disable TLS v1.3 by default for now to avoid interoperability issue.
144 * This can be enabled by default once the implementation has been fully
145 * completed and tested with other implementations. */
146 bss->tls_flags = TLS_CONN_DISABLE_TLSv1_3;
147
148 bss->max_auth_rounds = 100;
149 bss->max_auth_rounds_short = 50;
150
151 bss->send_probe_response = 1;
152
153 #ifdef CONFIG_HS20
154 bss->hs20_release = (HS20_VERSION >> 4) + 1;
155 #endif /* CONFIG_HS20 */
156
157 #ifdef CONFIG_MACSEC
158 bss->mka_priority = DEFAULT_PRIO_NOT_KEY_SERVER;
159 bss->macsec_port = 1;
160 #endif /* CONFIG_MACSEC */
161
162 /* Default to strict CRL checking. */
163 bss->check_crl_strict = 1;
164
165 #ifdef CONFIG_TESTING_OPTIONS
166 bss->sae_commit_status = -1;
167 #endif /* CONFIG_TESTING_OPTIONS */
168
169 #ifdef CONFIG_PASN
170 /* comeback after 10 TUs */
171 bss->pasn_comeback_after = 10;
172 bss->pasn_noauth = 1;
173 #endif /* CONFIG_PASN */
174 }
175
176
hostapd_config_defaults(void)177 struct hostapd_config * hostapd_config_defaults(void)
178 {
179 #define ecw2cw(ecw) ((1 << (ecw)) - 1)
180
181 struct hostapd_config *conf;
182 struct hostapd_bss_config *bss;
183 const int aCWmin = 4, aCWmax = 10;
184 const struct hostapd_wmm_ac_params ac_bk =
185 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
186 const struct hostapd_wmm_ac_params ac_be =
187 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
188 const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
189 { aCWmin - 1, aCWmin, 2, 3008 / 32, 0 };
190 const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
191 { aCWmin - 2, aCWmin - 1, 2, 1504 / 32, 0 };
192 const struct hostapd_tx_queue_params txq_bk =
193 { 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 };
194 const struct hostapd_tx_queue_params txq_be =
195 { 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0};
196 const struct hostapd_tx_queue_params txq_vi =
197 { 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30};
198 const struct hostapd_tx_queue_params txq_vo =
199 { 1, (ecw2cw(aCWmin) + 1) / 4 - 1,
200 (ecw2cw(aCWmin) + 1) / 2 - 1, 15};
201
202 #undef ecw2cw
203
204 conf = os_zalloc(sizeof(*conf));
205 bss = os_zalloc(sizeof(*bss));
206 if (conf == NULL || bss == NULL) {
207 wpa_printf(MSG_ERROR, "Failed to allocate memory for "
208 "configuration data.");
209 os_free(conf);
210 os_free(bss);
211 return NULL;
212 }
213 conf->bss = os_calloc(1, sizeof(struct hostapd_bss_config *));
214 if (conf->bss == NULL) {
215 os_free(conf);
216 os_free(bss);
217 return NULL;
218 }
219 conf->bss[0] = bss;
220
221 bss->radius = os_zalloc(sizeof(*bss->radius));
222 if (bss->radius == NULL) {
223 os_free(conf->bss);
224 os_free(conf);
225 os_free(bss);
226 return NULL;
227 }
228
229 hostapd_config_defaults_bss(bss);
230
231 conf->num_bss = 1;
232
233 conf->beacon_int = 100;
234 conf->rts_threshold = -2; /* use driver default: 2347 */
235 conf->fragm_threshold = -2; /* user driver default: 2346 */
236 /* Set to invalid value means do not add Power Constraint IE */
237 conf->local_pwr_constraint = -1;
238
239 conf->wmm_ac_params[0] = ac_be;
240 conf->wmm_ac_params[1] = ac_bk;
241 conf->wmm_ac_params[2] = ac_vi;
242 conf->wmm_ac_params[3] = ac_vo;
243
244 conf->tx_queue[0] = txq_vo;
245 conf->tx_queue[1] = txq_vi;
246 conf->tx_queue[2] = txq_be;
247 conf->tx_queue[3] = txq_bk;
248
249 conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED;
250
251 conf->ap_table_max_size = 255;
252 conf->ap_table_expiration_time = 60;
253 conf->track_sta_max_age = 180;
254
255 #ifdef CONFIG_TESTING_OPTIONS
256 conf->ignore_probe_probability = 0.0;
257 conf->ignore_auth_probability = 0.0;
258 conf->ignore_assoc_probability = 0.0;
259 conf->ignore_reassoc_probability = 0.0;
260 conf->corrupt_gtk_rekey_mic_probability = 0.0;
261 conf->ecsa_ie_only = 0;
262 conf->skip_send_eapol = 0;
263 conf->enable_eapol_large_timeout = 0;
264 #endif /* CONFIG_TESTING_OPTIONS */
265
266 conf->acs = 0;
267 conf->acs_ch_list.num = 0;
268 #ifdef CONFIG_ACS
269 conf->acs_num_scans = 5;
270 #endif /* CONFIG_ACS */
271
272 #ifdef CONFIG_IEEE80211AX
273 conf->he_op.he_rts_threshold = HE_OPERATION_RTS_THRESHOLD_MASK >>
274 HE_OPERATION_RTS_THRESHOLD_OFFSET;
275 /* Set default basic MCS/NSS set to single stream MCS 0-7 */
276 conf->he_op.he_basic_mcs_nss_set = 0xfffc;
277 conf->he_op.he_bss_color_disabled = 1;
278 conf->he_op.he_bss_color_partial = 0;
279 conf->he_op.he_bss_color = os_random() % 63 + 1;
280 conf->he_op.he_twt_responder = 1;
281 conf->he_6ghz_max_mpdu = 2;
282 conf->he_6ghz_max_ampdu_len_exp = 7;
283 conf->he_6ghz_rx_ant_pat = 1;
284 conf->he_6ghz_tx_ant_pat = 1;
285 #endif /* CONFIG_IEEE80211AX */
286
287 /* The third octet of the country string uses an ASCII space character
288 * by default to indicate that the regulations encompass all
289 * environments for the current frequency band in the country. */
290 conf->country[2] = ' ';
291
292 conf->rssi_reject_assoc_rssi = 0;
293 conf->rssi_reject_assoc_timeout = 30;
294
295 #ifdef CONFIG_AIRTIME_POLICY
296 conf->airtime_update_interval = AIRTIME_DEFAULT_UPDATE_INTERVAL;
297 #endif /* CONFIG_AIRTIME_POLICY */
298
299 return conf;
300 }
301
302
hostapd_mac_comp(const void * a,const void * b)303 int hostapd_mac_comp(const void *a, const void *b)
304 {
305 return os_memcmp(a, b, sizeof(macaddr));
306 }
307
308
hostapd_config_read_wpa_psk(const char * fname,struct hostapd_ssid * ssid)309 static int hostapd_config_read_wpa_psk(const char *fname,
310 struct hostapd_ssid *ssid)
311 {
312 FILE *f;
313 char buf[128], *pos;
314 const char *keyid;
315 char *context;
316 char *context2;
317 char *token;
318 char *name;
319 char *value;
320 int line = 0, ret = 0, len, ok;
321 u8 addr[ETH_ALEN];
322 struct hostapd_wpa_psk *psk;
323
324 if (!fname)
325 return 0;
326
327 f = fopen(fname, "r");
328 if (!f) {
329 wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname);
330 return -1;
331 }
332
333 while (fgets(buf, sizeof(buf), f)) {
334 int vlan_id = 0;
335 int wps = 0;
336
337 line++;
338
339 if (buf[0] == '#')
340 continue;
341 pos = buf;
342 while (*pos != '\0') {
343 if (*pos == '\n') {
344 *pos = '\0';
345 break;
346 }
347 pos++;
348 }
349 if (buf[0] == '\0')
350 continue;
351
352 context = NULL;
353 keyid = NULL;
354 while ((token = str_token(buf, " ", &context))) {
355 if (!os_strchr(token, '='))
356 break;
357 context2 = NULL;
358 name = str_token(token, "=", &context2);
359 if (!name)
360 break;
361 value = str_token(token, "", &context2);
362 if (!value)
363 value = "";
364 if (!os_strcmp(name, "keyid")) {
365 keyid = value;
366 } else if (!os_strcmp(name, "wps")) {
367 wps = atoi(value);
368 } else if (!os_strcmp(name, "vlanid")) {
369 vlan_id = atoi(value);
370 } else {
371 wpa_printf(MSG_ERROR,
372 "Unrecognized '%s=%s' on line %d in '%s'",
373 name, value, line, fname);
374 ret = -1;
375 break;
376 }
377 }
378
379 if (ret == -1)
380 break;
381
382 if (!token)
383 token = "";
384 if (hwaddr_aton(token, addr)) {
385 wpa_printf(MSG_ERROR,
386 "Invalid MAC address '%s' on line %d in '%s'",
387 token, line, fname);
388 ret = -1;
389 break;
390 }
391
392 psk = os_zalloc(sizeof(*psk));
393 if (psk == NULL) {
394 wpa_printf(MSG_ERROR, "WPA PSK allocation failed");
395 ret = -1;
396 break;
397 }
398 psk->vlan_id = vlan_id;
399 if (is_zero_ether_addr(addr))
400 psk->group = 1;
401 else
402 os_memcpy(psk->addr, addr, ETH_ALEN);
403
404 pos = str_token(buf, "", &context);
405 if (!pos) {
406 wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'",
407 line, fname);
408 os_free(psk);
409 ret = -1;
410 break;
411 }
412
413 ok = 0;
414 len = os_strlen(pos);
415 if (len == 2 * PMK_LEN &&
416 hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
417 ok = 1;
418 else if (len >= 8 && len < 64 &&
419 pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len,
420 4096, psk->psk, PMK_LEN) == 0)
421 ok = 1;
422 if (!ok) {
423 wpa_printf(MSG_ERROR,
424 "Invalid PSK '%s' on line %d in '%s'",
425 pos, line, fname);
426 os_free(psk);
427 ret = -1;
428 break;
429 }
430
431 if (keyid) {
432 len = os_strlcpy(psk->keyid, keyid, sizeof(psk->keyid));
433 if ((size_t) len >= sizeof(psk->keyid)) {
434 wpa_printf(MSG_ERROR,
435 "PSK keyid too long on line %d in '%s'",
436 line, fname);
437 os_free(psk);
438 ret = -1;
439 break;
440 }
441 }
442
443 psk->wps = wps;
444
445 psk->next = ssid->wpa_psk;
446 ssid->wpa_psk = psk;
447 }
448
449 fclose(f);
450
451 return ret;
452 }
453
454
hostapd_derive_psk(struct hostapd_ssid * ssid)455 static int hostapd_derive_psk(struct hostapd_ssid *ssid)
456 {
457 ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
458 if (ssid->wpa_psk == NULL) {
459 wpa_printf(MSG_ERROR, "Unable to alloc space for PSK");
460 return -1;
461 }
462 wpa_hexdump_ascii(MSG_DEBUG, "SSID",
463 (u8 *) ssid->ssid, ssid->ssid_len);
464 wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)",
465 (u8 *) ssid->wpa_passphrase,
466 os_strlen(ssid->wpa_passphrase));
467 if (pbkdf2_sha1(ssid->wpa_passphrase,
468 ssid->ssid, ssid->ssid_len,
469 4096, ssid->wpa_psk->psk, PMK_LEN) != 0) {
470 wpa_printf(MSG_ERROR, "Error in pbkdf2_sha1()");
471 return -1;
472 }
473 wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)",
474 ssid->wpa_psk->psk, PMK_LEN);
475 return 0;
476 }
477
478
hostapd_setup_sae_pt(struct hostapd_bss_config * conf)479 int hostapd_setup_sae_pt(struct hostapd_bss_config *conf)
480 {
481 #ifdef CONFIG_SAE
482 struct hostapd_ssid *ssid = &conf->ssid;
483 struct sae_password_entry *pw;
484
485 if ((conf->sae_pwe == SAE_PWE_HUNT_AND_PECK &&
486 !hostapd_sae_pw_id_in_use(conf) &&
487 !wpa_key_mgmt_sae_ext_key(conf->wpa_key_mgmt) &&
488 !hostapd_sae_pk_in_use(conf)) ||
489 conf->sae_pwe == SAE_PWE_FORCE_HUNT_AND_PECK ||
490 !wpa_key_mgmt_sae(conf->wpa_key_mgmt))
491 return 0; /* PT not needed */
492
493 sae_deinit_pt(ssid->pt);
494 ssid->pt = NULL;
495 if (ssid->wpa_passphrase) {
496 ssid->pt = sae_derive_pt(conf->sae_groups, ssid->ssid,
497 ssid->ssid_len,
498 (const u8 *) ssid->wpa_passphrase,
499 os_strlen(ssid->wpa_passphrase),
500 NULL);
501 if (!ssid->pt)
502 return -1;
503 }
504
505 for (pw = conf->sae_passwords; pw; pw = pw->next) {
506 sae_deinit_pt(pw->pt);
507 pw->pt = sae_derive_pt(conf->sae_groups, ssid->ssid,
508 ssid->ssid_len,
509 (const u8 *) pw->password,
510 os_strlen(pw->password),
511 pw->identifier);
512 if (!pw->pt)
513 return -1;
514 }
515 #endif /* CONFIG_SAE */
516
517 return 0;
518 }
519
520
hostapd_setup_wpa_psk(struct hostapd_bss_config * conf)521 int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
522 {
523 struct hostapd_ssid *ssid = &conf->ssid;
524
525 if (hostapd_setup_sae_pt(conf) < 0)
526 return -1;
527
528 if (ssid->wpa_passphrase != NULL) {
529 if (ssid->wpa_psk != NULL) {
530 wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK "
531 "instead of passphrase");
532 } else {
533 wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on "
534 "passphrase");
535 if (hostapd_derive_psk(ssid) < 0)
536 return -1;
537 }
538 ssid->wpa_psk->group = 1;
539 }
540
541 return hostapd_config_read_wpa_psk(ssid->wpa_psk_file, &conf->ssid);
542 }
543
544
hostapd_config_free_radius(struct hostapd_radius_server * servers,int num_servers)545 static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
546 int num_servers)
547 {
548 int i;
549
550 for (i = 0; i < num_servers; i++) {
551 os_free(servers[i].shared_secret);
552 }
553 os_free(servers);
554 }
555
556
557 struct hostapd_radius_attr *
hostapd_config_get_radius_attr(struct hostapd_radius_attr * attr,u8 type)558 hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type)
559 {
560 for (; attr; attr = attr->next) {
561 if (attr->type == type)
562 return attr;
563 }
564 return NULL;
565 }
566
567
hostapd_parse_radius_attr(const char * value)568 struct hostapd_radius_attr * hostapd_parse_radius_attr(const char *value)
569 {
570 const char *pos;
571 char syntax;
572 struct hostapd_radius_attr *attr;
573 size_t len;
574
575 attr = os_zalloc(sizeof(*attr));
576 if (!attr)
577 return NULL;
578
579 attr->type = atoi(value);
580
581 pos = os_strchr(value, ':');
582 if (!pos) {
583 attr->val = wpabuf_alloc(1);
584 if (!attr->val) {
585 os_free(attr);
586 return NULL;
587 }
588 wpabuf_put_u8(attr->val, 0);
589 return attr;
590 }
591
592 pos++;
593 if (pos[0] == '\0' || pos[1] != ':') {
594 os_free(attr);
595 return NULL;
596 }
597 syntax = *pos++;
598 pos++;
599
600 switch (syntax) {
601 case 's':
602 attr->val = wpabuf_alloc_copy(pos, os_strlen(pos));
603 break;
604 case 'x':
605 len = os_strlen(pos);
606 if (len & 1)
607 break;
608 len /= 2;
609 attr->val = wpabuf_alloc(len);
610 if (!attr->val)
611 break;
612 if (hexstr2bin(pos, wpabuf_put(attr->val, len), len) < 0) {
613 wpabuf_free(attr->val);
614 os_free(attr);
615 return NULL;
616 }
617 break;
618 case 'd':
619 attr->val = wpabuf_alloc(4);
620 if (attr->val)
621 wpabuf_put_be32(attr->val, atoi(pos));
622 break;
623 default:
624 os_free(attr);
625 return NULL;
626 }
627
628 if (!attr->val) {
629 os_free(attr);
630 return NULL;
631 }
632
633 return attr;
634 }
635
636
hostapd_config_free_radius_attr(struct hostapd_radius_attr * attr)637 void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr)
638 {
639 struct hostapd_radius_attr *prev;
640
641 while (attr) {
642 prev = attr;
643 attr = attr->next;
644 wpabuf_free(prev->val);
645 os_free(prev);
646 }
647 }
648
649
hostapd_config_free_eap_user(struct hostapd_eap_user * user)650 void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
651 {
652 hostapd_config_free_radius_attr(user->accept_attr);
653 os_free(user->identity);
654 bin_clear_free(user->password, user->password_len);
655 bin_clear_free(user->salt, user->salt_len);
656 os_free(user);
657 }
658
659
hostapd_config_free_eap_users(struct hostapd_eap_user * user)660 void hostapd_config_free_eap_users(struct hostapd_eap_user *user)
661 {
662 struct hostapd_eap_user *prev_user;
663
664 while (user) {
665 prev_user = user;
666 user = user->next;
667 hostapd_config_free_eap_user(prev_user);
668 }
669 }
670
671
672 #ifdef CONFIG_WEP
hostapd_config_free_wep(struct hostapd_wep_keys * keys)673 static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
674 {
675 int i;
676 for (i = 0; i < NUM_WEP_KEYS; i++) {
677 bin_clear_free(keys->key[i], keys->len[i]);
678 keys->key[i] = NULL;
679 }
680 }
681 #endif /* CONFIG_WEP */
682
683
hostapd_config_clear_wpa_psk(struct hostapd_wpa_psk ** l)684 void hostapd_config_clear_wpa_psk(struct hostapd_wpa_psk **l)
685 {
686 struct hostapd_wpa_psk *psk, *tmp;
687
688 for (psk = *l; psk;) {
689 tmp = psk;
690 psk = psk->next;
691 bin_clear_free(tmp, sizeof(*tmp));
692 }
693 *l = NULL;
694 }
695
696
hostapd_config_free_anqp_elem(struct hostapd_bss_config * conf)697 static void hostapd_config_free_anqp_elem(struct hostapd_bss_config *conf)
698 {
699 struct anqp_element *elem;
700
701 while ((elem = dl_list_first(&conf->anqp_elem, struct anqp_element,
702 list))) {
703 dl_list_del(&elem->list);
704 wpabuf_free(elem->payload);
705 os_free(elem);
706 }
707 }
708
709
hostapd_config_free_fils_realms(struct hostapd_bss_config * conf)710 static void hostapd_config_free_fils_realms(struct hostapd_bss_config *conf)
711 {
712 #ifdef CONFIG_FILS
713 struct fils_realm *realm;
714
715 while ((realm = dl_list_first(&conf->fils_realms, struct fils_realm,
716 list))) {
717 dl_list_del(&realm->list);
718 os_free(realm);
719 }
720 #endif /* CONFIG_FILS */
721 }
722
723
hostapd_config_free_sae_passwords(struct hostapd_bss_config * conf)724 static void hostapd_config_free_sae_passwords(struct hostapd_bss_config *conf)
725 {
726 struct sae_password_entry *pw, *tmp;
727
728 pw = conf->sae_passwords;
729 conf->sae_passwords = NULL;
730 while (pw) {
731 tmp = pw;
732 pw = pw->next;
733 str_clear_free(tmp->password);
734 os_free(tmp->identifier);
735 #ifdef CONFIG_SAE
736 sae_deinit_pt(tmp->pt);
737 #endif /* CONFIG_SAE */
738 #ifdef CONFIG_SAE_PK
739 sae_deinit_pk(tmp->pk);
740 #endif /* CONFIG_SAE_PK */
741 os_free(tmp);
742 }
743 }
744
745
746 #ifdef CONFIG_DPP2
hostapd_dpp_controller_conf_free(struct dpp_controller_conf * conf)747 static void hostapd_dpp_controller_conf_free(struct dpp_controller_conf *conf)
748 {
749 struct dpp_controller_conf *prev;
750
751 while (conf) {
752 prev = conf;
753 conf = conf->next;
754 os_free(prev);
755 }
756 }
757 #endif /* CONFIG_DPP2 */
758
759
hostapd_config_free_bss(struct hostapd_bss_config * conf)760 void hostapd_config_free_bss(struct hostapd_bss_config *conf)
761 {
762 #if defined(CONFIG_WPS) || defined(CONFIG_HS20)
763 size_t i;
764 #endif
765
766 if (conf == NULL)
767 return;
768
769 hostapd_config_clear_wpa_psk(&conf->ssid.wpa_psk);
770
771 str_clear_free(conf->ssid.wpa_passphrase);
772 os_free(conf->ssid.wpa_psk_file);
773 #ifdef CONFIG_WEP
774 hostapd_config_free_wep(&conf->ssid.wep);
775 #endif /* CONFIG_WEP */
776 #ifdef CONFIG_FULL_DYNAMIC_VLAN
777 os_free(conf->ssid.vlan_tagged_interface);
778 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
779 #ifdef CONFIG_SAE
780 sae_deinit_pt(conf->ssid.pt);
781 #endif /* CONFIG_SAE */
782
783 hostapd_config_free_eap_users(conf->eap_user);
784 os_free(conf->eap_user_sqlite);
785
786 os_free(conf->eap_req_id_text);
787 os_free(conf->erp_domain);
788 os_free(conf->accept_mac);
789 os_free(conf->deny_mac);
790 os_free(conf->nas_identifier);
791 if (conf->radius) {
792 hostapd_config_free_radius(conf->radius->auth_servers,
793 conf->radius->num_auth_servers);
794 hostapd_config_free_radius(conf->radius->acct_servers,
795 conf->radius->num_acct_servers);
796 os_free(conf->radius->force_client_dev);
797 }
798 hostapd_config_free_radius_attr(conf->radius_auth_req_attr);
799 hostapd_config_free_radius_attr(conf->radius_acct_req_attr);
800 os_free(conf->radius_req_attr_sqlite);
801 os_free(conf->rsn_preauth_interfaces);
802 os_free(conf->ctrl_interface);
803 os_free(conf->config_id);
804 os_free(conf->ca_cert);
805 os_free(conf->server_cert);
806 os_free(conf->server_cert2);
807 os_free(conf->private_key);
808 os_free(conf->private_key2);
809 os_free(conf->private_key_passwd);
810 os_free(conf->private_key_passwd2);
811 os_free(conf->check_cert_subject);
812 os_free(conf->ocsp_stapling_response);
813 os_free(conf->ocsp_stapling_response_multi);
814 os_free(conf->dh_file);
815 os_free(conf->openssl_ciphers);
816 os_free(conf->openssl_ecdh_curves);
817 os_free(conf->pac_opaque_encr_key);
818 os_free(conf->eap_fast_a_id);
819 os_free(conf->eap_fast_a_id_info);
820 os_free(conf->eap_sim_db);
821 os_free(conf->imsi_privacy_key);
822 os_free(conf->radius_server_clients);
823 os_free(conf->radius);
824 os_free(conf->radius_das_shared_secret);
825 hostapd_config_free_vlan(conf);
826 os_free(conf->time_zone);
827
828 #ifdef CONFIG_IEEE80211R_AP
829 {
830 struct ft_remote_r0kh *r0kh, *r0kh_prev;
831 struct ft_remote_r1kh *r1kh, *r1kh_prev;
832
833 r0kh = conf->r0kh_list;
834 conf->r0kh_list = NULL;
835 while (r0kh) {
836 r0kh_prev = r0kh;
837 r0kh = r0kh->next;
838 os_free(r0kh_prev);
839 }
840
841 r1kh = conf->r1kh_list;
842 conf->r1kh_list = NULL;
843 while (r1kh) {
844 r1kh_prev = r1kh;
845 r1kh = r1kh->next;
846 os_free(r1kh_prev);
847 }
848 }
849 #endif /* CONFIG_IEEE80211R_AP */
850
851 #ifdef CONFIG_WPS
852 os_free(conf->wps_pin_requests);
853 os_free(conf->device_name);
854 os_free(conf->manufacturer);
855 os_free(conf->model_name);
856 os_free(conf->model_number);
857 os_free(conf->serial_number);
858 os_free(conf->config_methods);
859 os_free(conf->ap_pin);
860 os_free(conf->extra_cred);
861 os_free(conf->ap_settings);
862 hostapd_config_clear_wpa_psk(&conf->multi_ap_backhaul_ssid.wpa_psk);
863 str_clear_free(conf->multi_ap_backhaul_ssid.wpa_passphrase);
864 os_free(conf->upnp_iface);
865 os_free(conf->friendly_name);
866 os_free(conf->manufacturer_url);
867 os_free(conf->model_description);
868 os_free(conf->model_url);
869 os_free(conf->upc);
870 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++)
871 wpabuf_free(conf->wps_vendor_ext[i]);
872 wpabuf_free(conf->wps_application_ext);
873 wpabuf_free(conf->wps_nfc_dh_pubkey);
874 wpabuf_free(conf->wps_nfc_dh_privkey);
875 wpabuf_free(conf->wps_nfc_dev_pw);
876 #endif /* CONFIG_WPS */
877
878 os_free(conf->roaming_consortium);
879 os_free(conf->venue_name);
880 os_free(conf->venue_url);
881 os_free(conf->nai_realm_data);
882 os_free(conf->network_auth_type);
883 os_free(conf->anqp_3gpp_cell_net);
884 os_free(conf->domain_name);
885 hostapd_config_free_anqp_elem(conf);
886
887 #ifdef CONFIG_RADIUS_TEST
888 os_free(conf->dump_msk_file);
889 #endif /* CONFIG_RADIUS_TEST */
890
891 #ifdef CONFIG_HS20
892 os_free(conf->hs20_oper_friendly_name);
893 os_free(conf->hs20_wan_metrics);
894 os_free(conf->hs20_connection_capability);
895 os_free(conf->hs20_operating_class);
896 os_free(conf->hs20_icons);
897 if (conf->hs20_osu_providers) {
898 for (i = 0; i < conf->hs20_osu_providers_count; i++) {
899 struct hs20_osu_provider *p;
900 size_t j;
901 p = &conf->hs20_osu_providers[i];
902 os_free(p->friendly_name);
903 os_free(p->server_uri);
904 os_free(p->method_list);
905 for (j = 0; j < p->icons_count; j++)
906 os_free(p->icons[j]);
907 os_free(p->icons);
908 os_free(p->osu_nai);
909 os_free(p->osu_nai2);
910 os_free(p->service_desc);
911 }
912 os_free(conf->hs20_osu_providers);
913 }
914 if (conf->hs20_operator_icon) {
915 for (i = 0; i < conf->hs20_operator_icon_count; i++)
916 os_free(conf->hs20_operator_icon[i]);
917 os_free(conf->hs20_operator_icon);
918 }
919 os_free(conf->subscr_remediation_url);
920 os_free(conf->hs20_sim_provisioning_url);
921 os_free(conf->t_c_filename);
922 os_free(conf->t_c_server_url);
923 #endif /* CONFIG_HS20 */
924
925 wpabuf_free(conf->vendor_elements);
926 wpabuf_free(conf->assocresp_elements);
927
928 os_free(conf->sae_groups);
929 #ifdef CONFIG_OWE
930 os_free(conf->owe_groups);
931 #endif /* CONFIG_OWE */
932
933 os_free(conf->wowlan_triggers);
934
935 os_free(conf->server_id);
936
937 #ifdef CONFIG_TESTING_OPTIONS
938 wpabuf_free(conf->own_ie_override);
939 wpabuf_free(conf->sae_commit_override);
940 wpabuf_free(conf->rsne_override_eapol);
941 wpabuf_free(conf->rsnxe_override_eapol);
942 wpabuf_free(conf->rsne_override_ft);
943 wpabuf_free(conf->rsnxe_override_ft);
944 wpabuf_free(conf->gtk_rsc_override);
945 wpabuf_free(conf->igtk_rsc_override);
946 #endif /* CONFIG_TESTING_OPTIONS */
947
948 os_free(conf->no_probe_resp_if_seen_on);
949 os_free(conf->no_auth_if_seen_on);
950
951 hostapd_config_free_fils_realms(conf);
952
953 #ifdef CONFIG_DPP
954 os_free(conf->dpp_name);
955 os_free(conf->dpp_mud_url);
956 os_free(conf->dpp_extra_conf_req_name);
957 os_free(conf->dpp_extra_conf_req_value);
958 os_free(conf->dpp_connector);
959 wpabuf_free(conf->dpp_netaccesskey);
960 wpabuf_free(conf->dpp_csign);
961 #ifdef CONFIG_DPP2
962 hostapd_dpp_controller_conf_free(conf->dpp_controller);
963 #endif /* CONFIG_DPP2 */
964 #endif /* CONFIG_DPP */
965
966 hostapd_config_free_sae_passwords(conf);
967
968 #ifdef CONFIG_AIRTIME_POLICY
969 {
970 struct airtime_sta_weight *wt, *wt_prev;
971
972 wt = conf->airtime_weight_list;
973 conf->airtime_weight_list = NULL;
974 while (wt) {
975 wt_prev = wt;
976 wt = wt->next;
977 os_free(wt_prev);
978 }
979 }
980 #endif /* CONFIG_AIRTIME_POLICY */
981
982 #ifdef CONFIG_PASN
983 os_free(conf->pasn_groups);
984 #endif /* CONFIG_PASN */
985
986 os_free(conf);
987 }
988
989
990 /**
991 * hostapd_config_free - Free hostapd configuration
992 * @conf: Configuration data from hostapd_config_read().
993 */
hostapd_config_free(struct hostapd_config * conf)994 void hostapd_config_free(struct hostapd_config *conf)
995 {
996 size_t i;
997
998 if (conf == NULL)
999 return;
1000
1001 for (i = 0; i < conf->num_bss; i++)
1002 hostapd_config_free_bss(conf->bss[i]);
1003 os_free(conf->bss);
1004 os_free(conf->supported_rates);
1005 os_free(conf->basic_rates);
1006 os_free(conf->acs_ch_list.range);
1007 os_free(conf->acs_freq_list.range);
1008 os_free(conf->driver_params);
1009 #ifdef CONFIG_ACS
1010 os_free(conf->acs_chan_bias);
1011 #endif /* CONFIG_ACS */
1012 wpabuf_free(conf->lci);
1013 wpabuf_free(conf->civic);
1014
1015 os_free(conf);
1016 }
1017
1018
1019 /**
1020 * hostapd_maclist_found - Find a MAC address from a list
1021 * @list: MAC address list
1022 * @num_entries: Number of addresses in the list
1023 * @addr: Address to search for
1024 * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed
1025 * Returns: 1 if address is in the list or 0 if not.
1026 *
1027 * Perform a binary search for given MAC address from a pre-sorted list.
1028 */
hostapd_maclist_found(struct mac_acl_entry * list,int num_entries,const u8 * addr,struct vlan_description * vlan_id)1029 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries,
1030 const u8 *addr, struct vlan_description *vlan_id)
1031 {
1032 int start, end, middle, res;
1033
1034 start = 0;
1035 end = num_entries - 1;
1036
1037 while (start <= end) {
1038 middle = (start + end) / 2;
1039 res = os_memcmp(list[middle].addr, addr, ETH_ALEN);
1040 if (res == 0) {
1041 if (vlan_id)
1042 *vlan_id = list[middle].vlan_id;
1043 return 1;
1044 }
1045 if (res < 0)
1046 start = middle + 1;
1047 else
1048 end = middle - 1;
1049 }
1050
1051 return 0;
1052 }
1053
1054
hostapd_rate_found(int * list,int rate)1055 int hostapd_rate_found(int *list, int rate)
1056 {
1057 int i;
1058
1059 if (list == NULL)
1060 return 0;
1061
1062 for (i = 0; list[i] >= 0; i++)
1063 if (list[i] == rate)
1064 return 1;
1065
1066 return 0;
1067 }
1068
1069
hostapd_vlan_valid(struct hostapd_vlan * vlan,struct vlan_description * vlan_desc)1070 int hostapd_vlan_valid(struct hostapd_vlan *vlan,
1071 struct vlan_description *vlan_desc)
1072 {
1073 struct hostapd_vlan *v = vlan;
1074 int i;
1075
1076 if (!vlan_desc->notempty || vlan_desc->untagged < 0 ||
1077 vlan_desc->untagged > MAX_VLAN_ID)
1078 return 0;
1079 for (i = 0; i < MAX_NUM_TAGGED_VLAN; i++) {
1080 if (vlan_desc->tagged[i] < 0 ||
1081 vlan_desc->tagged[i] > MAX_VLAN_ID)
1082 return 0;
1083 }
1084 if (!vlan_desc->untagged && !vlan_desc->tagged[0])
1085 return 0;
1086
1087 while (v) {
1088 if (!vlan_compare(&v->vlan_desc, vlan_desc) ||
1089 v->vlan_id == VLAN_ID_WILDCARD)
1090 return 1;
1091 v = v->next;
1092 }
1093 return 0;
1094 }
1095
1096
hostapd_get_vlan_id_ifname(struct hostapd_vlan * vlan,int vlan_id)1097 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id)
1098 {
1099 struct hostapd_vlan *v = vlan;
1100 while (v) {
1101 if (v->vlan_id == vlan_id)
1102 return v->ifname;
1103 v = v->next;
1104 }
1105 return NULL;
1106 }
1107
1108
hostapd_get_psk(const struct hostapd_bss_config * conf,const u8 * addr,const u8 * p2p_dev_addr,const u8 * prev_psk,int * vlan_id)1109 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
1110 const u8 *addr, const u8 *p2p_dev_addr,
1111 const u8 *prev_psk, int *vlan_id)
1112 {
1113 struct hostapd_wpa_psk *psk;
1114 int next_ok = prev_psk == NULL;
1115
1116 if (vlan_id)
1117 *vlan_id = 0;
1118
1119 if (p2p_dev_addr && !is_zero_ether_addr(p2p_dev_addr)) {
1120 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
1121 " p2p_dev_addr=" MACSTR " prev_psk=%p",
1122 MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk);
1123 addr = NULL; /* Use P2P Device Address for matching */
1124 } else {
1125 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
1126 " prev_psk=%p",
1127 MAC2STR(addr), prev_psk);
1128 }
1129
1130 for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
1131 if (next_ok &&
1132 (psk->group ||
1133 (addr && os_memcmp(psk->addr, addr, ETH_ALEN) == 0) ||
1134 (!addr && p2p_dev_addr &&
1135 os_memcmp(psk->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) ==
1136 0))) {
1137 if (vlan_id)
1138 *vlan_id = psk->vlan_id;
1139 return psk->psk;
1140 }
1141
1142 if (psk->psk == prev_psk)
1143 next_ok = 1;
1144 }
1145
1146 return NULL;
1147 }
1148
1149
1150 #ifdef CONFIG_SAE_PK
hostapd_sae_pk_password_without_pk(struct hostapd_bss_config * bss)1151 static bool hostapd_sae_pk_password_without_pk(struct hostapd_bss_config *bss)
1152 {
1153 struct sae_password_entry *pw;
1154 bool res = false;
1155
1156 if (bss->ssid.wpa_passphrase &&
1157 #ifdef CONFIG_TESTING_OPTIONS
1158 !bss->sae_pk_password_check_skip &&
1159 #endif /* CONFIG_TESTING_OPTIONS */
1160 sae_pk_valid_password(bss->ssid.wpa_passphrase))
1161 res = true;
1162
1163 for (pw = bss->sae_passwords; pw; pw = pw->next) {
1164 if (!pw->pk &&
1165 #ifdef CONFIG_TESTING_OPTIONS
1166 !bss->sae_pk_password_check_skip &&
1167 #endif /* CONFIG_TESTING_OPTIONS */
1168 sae_pk_valid_password(pw->password))
1169 return true;
1170
1171 if (bss->ssid.wpa_passphrase && res && pw->pk &&
1172 os_strcmp(bss->ssid.wpa_passphrase, pw->password) == 0)
1173 res = false;
1174 }
1175
1176 return res;
1177 }
1178 #endif /* CONFIG_SAE_PK */
1179
1180
hostapd_config_check_bss_6g(struct hostapd_bss_config * bss)1181 static bool hostapd_config_check_bss_6g(struct hostapd_bss_config *bss)
1182 {
1183 if (bss->wpa != WPA_PROTO_RSN) {
1184 wpa_printf(MSG_ERROR,
1185 "Pre-RSNA security methods are not allowed in 6 GHz");
1186 return false;
1187 }
1188
1189 if (bss->ieee80211w != MGMT_FRAME_PROTECTION_REQUIRED) {
1190 wpa_printf(MSG_ERROR,
1191 "Management frame protection is required in 6 GHz");
1192 return false;
1193 }
1194
1195 if (bss->wpa_key_mgmt & (WPA_KEY_MGMT_PSK |
1196 WPA_KEY_MGMT_FT_PSK |
1197 WPA_KEY_MGMT_PSK_SHA256)) {
1198 wpa_printf(MSG_ERROR, "Invalid AKM suite for 6 GHz");
1199 return false;
1200 }
1201
1202 if (bss->rsn_pairwise & (WPA_CIPHER_WEP40 |
1203 WPA_CIPHER_WEP104 |
1204 WPA_CIPHER_TKIP)) {
1205 wpa_printf(MSG_ERROR,
1206 "Invalid pairwise cipher suite for 6 GHz");
1207 return false;
1208 }
1209
1210 if (bss->wpa_group & (WPA_CIPHER_WEP40 |
1211 WPA_CIPHER_WEP104 |
1212 WPA_CIPHER_TKIP)) {
1213 wpa_printf(MSG_ERROR, "Invalid group cipher suite for 6 GHz");
1214 return false;
1215 }
1216
1217 #ifdef CONFIG_SAE
1218 if (wpa_key_mgmt_sae(bss->wpa_key_mgmt) &&
1219 bss->sae_pwe == SAE_PWE_HUNT_AND_PECK) {
1220 wpa_printf(MSG_INFO, "SAE: Enabling SAE H2E on 6 GHz");
1221 bss->sae_pwe = SAE_PWE_BOTH;
1222 }
1223 #endif /* CONFIG_SAE */
1224
1225 return true;
1226 }
1227
1228
hostapd_config_check_bss(struct hostapd_bss_config * bss,struct hostapd_config * conf,int full_config)1229 static int hostapd_config_check_bss(struct hostapd_bss_config *bss,
1230 struct hostapd_config *conf,
1231 int full_config)
1232 {
1233 if (full_config && is_6ghz_op_class(conf->op_class) &&
1234 !hostapd_config_check_bss_6g(bss))
1235 return -1;
1236
1237 if (full_config && bss->ieee802_1x && !bss->eap_server &&
1238 !bss->radius->auth_servers) {
1239 wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no "
1240 "EAP authenticator configured).");
1241 return -1;
1242 }
1243
1244 #ifdef CONFIG_WEP
1245 if (bss->wpa) {
1246 int wep, i;
1247
1248 wep = bss->default_wep_key_len > 0 ||
1249 bss->individual_wep_key_len > 0;
1250 for (i = 0; i < NUM_WEP_KEYS; i++) {
1251 if (bss->ssid.wep.keys_set) {
1252 wep = 1;
1253 break;
1254 }
1255 }
1256
1257 if (wep) {
1258 wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported");
1259 return -1;
1260 }
1261 }
1262 #endif /* CONFIG_WEP */
1263
1264 if (full_config && bss->wpa &&
1265 bss->wpa_psk_radius != PSK_RADIUS_IGNORED &&
1266 bss->wpa_psk_radius != PSK_RADIUS_DURING_4WAY_HS &&
1267 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) {
1268 wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no "
1269 "RADIUS checking (macaddr_acl=2) enabled.");
1270 return -1;
1271 }
1272
1273 if (full_config && bss->wpa &&
1274 wpa_key_mgmt_wpa_psk_no_sae(bss->wpa_key_mgmt) &&
1275 bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL &&
1276 bss->ssid.wpa_psk_file == NULL &&
1277 bss->wpa_psk_radius != PSK_RADIUS_DURING_4WAY_HS &&
1278 (bss->wpa_psk_radius != PSK_RADIUS_REQUIRED ||
1279 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) {
1280 wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase "
1281 "is not configured.");
1282 return -1;
1283 }
1284
1285 if (full_config && !is_zero_ether_addr(bss->bssid)) {
1286 size_t i;
1287
1288 for (i = 0; i < conf->num_bss; i++) {
1289 if (conf->bss[i] != bss &&
1290 (hostapd_mac_comp(conf->bss[i]->bssid,
1291 bss->bssid) == 0)) {
1292 wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR
1293 " on interface '%s' and '%s'.",
1294 MAC2STR(bss->bssid),
1295 conf->bss[i]->iface, bss->iface);
1296 return -1;
1297 }
1298 }
1299 }
1300
1301 #ifdef CONFIG_IEEE80211R_AP
1302 if (full_config && wpa_key_mgmt_ft(bss->wpa_key_mgmt) &&
1303 (bss->nas_identifier == NULL ||
1304 os_strlen(bss->nas_identifier) < 1 ||
1305 os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) {
1306 wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires "
1307 "nas_identifier to be configured as a 1..48 octet "
1308 "string");
1309 return -1;
1310 }
1311 #endif /* CONFIG_IEEE80211R_AP */
1312
1313 if (full_config && conf->ieee80211n &&
1314 conf->hw_mode == HOSTAPD_MODE_IEEE80211B) {
1315 bss->disable_11n = true;
1316 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not "
1317 "allowed, disabling HT capabilities");
1318 }
1319
1320 #ifdef CONFIG_WEP
1321 if (full_config && conf->ieee80211n &&
1322 bss->ssid.security_policy == SECURITY_STATIC_WEP) {
1323 bss->disable_11n = true;
1324 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not "
1325 "allowed, disabling HT capabilities");
1326 }
1327 #endif /* CONFIG_WEP */
1328
1329 if (full_config && conf->ieee80211n && bss->wpa &&
1330 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
1331 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1332 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
1333 {
1334 bss->disable_11n = true;
1335 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 "
1336 "requires CCMP/GCMP to be enabled, disabling HT "
1337 "capabilities");
1338 }
1339
1340 #ifdef CONFIG_IEEE80211AC
1341 #ifdef CONFIG_WEP
1342 if (full_config && conf->ieee80211ac &&
1343 bss->ssid.security_policy == SECURITY_STATIC_WEP) {
1344 bss->disable_11ac = true;
1345 wpa_printf(MSG_ERROR,
1346 "VHT (IEEE 802.11ac) with WEP is not allowed, disabling VHT capabilities");
1347 }
1348 #endif /* CONFIG_WEP */
1349
1350 if (full_config && conf->ieee80211ac && bss->wpa &&
1351 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
1352 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1353 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
1354 {
1355 bss->disable_11ac = true;
1356 wpa_printf(MSG_ERROR,
1357 "VHT (IEEE 802.11ac) with WPA/WPA2 requires CCMP/GCMP to be enabled, disabling VHT capabilities");
1358 }
1359 #endif /* CONFIG_IEEE80211AC */
1360
1361 #ifdef CONFIG_IEEE80211AX
1362 #ifdef CONFIG_WEP
1363 if (full_config && conf->ieee80211ax &&
1364 bss->ssid.security_policy == SECURITY_STATIC_WEP) {
1365 bss->disable_11ax = true;
1366 wpa_printf(MSG_ERROR,
1367 "HE (IEEE 802.11ax) with WEP is not allowed, disabling HE capabilities");
1368 }
1369 #endif /* CONFIG_WEP */
1370
1371 if (full_config && conf->ieee80211ax && bss->wpa &&
1372 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
1373 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1374 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
1375 {
1376 bss->disable_11ax = true;
1377 wpa_printf(MSG_ERROR,
1378 "HE (IEEE 802.11ax) with WPA/WPA2 requires CCMP/GCMP to be enabled, disabling HE capabilities");
1379 }
1380 #endif /* CONFIG_IEEE80211AX */
1381
1382 #ifdef CONFIG_WPS
1383 if (full_config && bss->wps_state && bss->ignore_broadcast_ssid) {
1384 wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid "
1385 "configuration forced WPS to be disabled");
1386 bss->wps_state = 0;
1387 }
1388
1389 #ifdef CONFIG_WEP
1390 if (full_config && bss->wps_state &&
1391 bss->ssid.wep.keys_set && bss->wpa == 0) {
1392 wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be "
1393 "disabled");
1394 bss->wps_state = 0;
1395 }
1396 #endif /* CONFIG_WEP */
1397
1398 if (full_config && bss->wps_state && bss->wpa &&
1399 (!(bss->wpa & 2) ||
1400 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1401 WPA_CIPHER_CCMP_256 |
1402 WPA_CIPHER_GCMP_256)))) {
1403 wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without "
1404 "WPA2/CCMP/GCMP forced WPS to be disabled");
1405 bss->wps_state = 0;
1406 }
1407 #endif /* CONFIG_WPS */
1408
1409 #ifdef CONFIG_HS20
1410 if (full_config && bss->hs20 &&
1411 (!(bss->wpa & 2) ||
1412 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1413 WPA_CIPHER_CCMP_256 |
1414 WPA_CIPHER_GCMP_256)))) {
1415 wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP "
1416 "configuration is required for Hotspot 2.0 "
1417 "functionality");
1418 return -1;
1419 }
1420 #endif /* CONFIG_HS20 */
1421
1422 #ifdef CONFIG_MBO
1423 if (full_config && bss->mbo_enabled && (bss->wpa & 2) &&
1424 bss->ieee80211w == NO_MGMT_FRAME_PROTECTION) {
1425 wpa_printf(MSG_ERROR,
1426 "MBO: PMF needs to be enabled whenever using WPA2 with MBO");
1427 return -1;
1428 }
1429 #endif /* CONFIG_MBO */
1430
1431 #ifdef CONFIG_OCV
1432 if (full_config && bss->ieee80211w == NO_MGMT_FRAME_PROTECTION &&
1433 bss->ocv) {
1434 wpa_printf(MSG_ERROR,
1435 "OCV: PMF needs to be enabled whenever using OCV");
1436 return -1;
1437 }
1438 #endif /* CONFIG_OCV */
1439
1440 #ifdef CONFIG_SAE_PK
1441 if (full_config && hostapd_sae_pk_in_use(bss) &&
1442 hostapd_sae_pk_password_without_pk(bss)) {
1443 wpa_printf(MSG_ERROR,
1444 "SAE-PK: SAE password uses SAE-PK style, but does not have PK configured");
1445 return -1;
1446 }
1447 #endif /* CONFIG_SAE_PK */
1448
1449 #ifdef CONFIG_FILS
1450 if (full_config && bss->fils_discovery_max_int &&
1451 (!conf->ieee80211ax || bss->disable_11ax)) {
1452 wpa_printf(MSG_ERROR,
1453 "Currently IEEE 802.11ax support is mandatory to enable FILS discovery transmission.");
1454 return -1;
1455 }
1456
1457 if (full_config && bss->fils_discovery_max_int &&
1458 bss->unsol_bcast_probe_resp_interval) {
1459 wpa_printf(MSG_ERROR,
1460 "Cannot enable both FILS discovery and unsolicited broadcast Probe Response at the same time");
1461 return -1;
1462 }
1463 #endif /* CONFIG_FILS */
1464
1465 #ifdef CONFIG_IEEE80211BE
1466 if (full_config && !bss->disable_11be && bss->disable_11ax) {
1467 bss->disable_11be = true;
1468 wpa_printf(MSG_INFO,
1469 "Disabling IEEE 802.11be as IEEE 802.11ax is disabled for this BSS");
1470 }
1471 #endif /* CONFIG_IEEE80211BE */
1472
1473 if (full_config && bss->ignore_broadcast_ssid && conf->mbssid) {
1474 wpa_printf(MSG_ERROR,
1475 "Hidden SSID is not suppored when MBSSID is enabled");
1476 return -1;
1477 }
1478
1479 return 0;
1480 }
1481
1482
hostapd_config_check_cw(struct hostapd_config * conf,int queue)1483 static int hostapd_config_check_cw(struct hostapd_config *conf, int queue)
1484 {
1485 int tx_cwmin = conf->tx_queue[queue].cwmin;
1486 int tx_cwmax = conf->tx_queue[queue].cwmax;
1487 int ac_cwmin = conf->wmm_ac_params[queue].cwmin;
1488 int ac_cwmax = conf->wmm_ac_params[queue].cwmax;
1489
1490 if (tx_cwmin > tx_cwmax) {
1491 wpa_printf(MSG_ERROR,
1492 "Invalid TX queue cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)",
1493 tx_cwmin, tx_cwmax);
1494 return -1;
1495 }
1496 if (ac_cwmin > ac_cwmax) {
1497 wpa_printf(MSG_ERROR,
1498 "Invalid WMM AC cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)",
1499 ac_cwmin, ac_cwmax);
1500 return -1;
1501 }
1502 return 0;
1503 }
1504
1505
hostapd_config_check(struct hostapd_config * conf,int full_config)1506 int hostapd_config_check(struct hostapd_config *conf, int full_config)
1507 {
1508 size_t i;
1509
1510 if (full_config && is_6ghz_op_class(conf->op_class) &&
1511 !conf->hw_mode_set) {
1512 /* Use the appropriate hw_mode value automatically when the
1513 * op_class parameter has been set, but hw_mode was not. */
1514 conf->hw_mode = HOSTAPD_MODE_IEEE80211A;
1515 }
1516
1517 if (full_config && conf->ieee80211d &&
1518 (!conf->country[0] || !conf->country[1])) {
1519 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without "
1520 "setting the country_code");
1521 return -1;
1522 }
1523
1524 if (full_config && conf->ieee80211h && !conf->ieee80211d) {
1525 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without "
1526 "IEEE 802.11d enabled");
1527 return -1;
1528 }
1529
1530 if (full_config && conf->local_pwr_constraint != -1 &&
1531 !conf->ieee80211d) {
1532 wpa_printf(MSG_ERROR, "Cannot add Power Constraint element without Country element");
1533 return -1;
1534 }
1535
1536 if (full_config && conf->spectrum_mgmt_required &&
1537 conf->local_pwr_constraint == -1) {
1538 wpa_printf(MSG_ERROR, "Cannot set Spectrum Management bit without Country and Power Constraint elements");
1539 return -1;
1540 }
1541
1542 #ifdef CONFIG_AIRTIME_POLICY
1543 if (full_config && conf->airtime_mode > AIRTIME_MODE_STATIC &&
1544 !conf->airtime_update_interval) {
1545 wpa_printf(MSG_ERROR, "Airtime update interval cannot be zero");
1546 return -1;
1547 }
1548 #endif /* CONFIG_AIRTIME_POLICY */
1549 for (i = 0; i < NUM_TX_QUEUES; i++) {
1550 if (hostapd_config_check_cw(conf, i))
1551 return -1;
1552 }
1553
1554 #ifdef CONFIG_IEEE80211BE
1555 if (full_config && conf->ieee80211be && !conf->ieee80211ax) {
1556 wpa_printf(MSG_ERROR,
1557 "Cannot set ieee80211be without ieee80211ax");
1558 return -1;
1559 }
1560 #endif /* CONFIG_IEEE80211BE */
1561
1562 if (full_config && conf->mbssid && !conf->ieee80211ax) {
1563 wpa_printf(MSG_ERROR,
1564 "Cannot enable multiple BSSID support without ieee80211ax");
1565 return -1;
1566 }
1567
1568 for (i = 0; i < conf->num_bss; i++) {
1569 if (hostapd_config_check_bss(conf->bss[i], conf, full_config))
1570 return -1;
1571 }
1572
1573 return 0;
1574 }
1575
1576
hostapd_set_security_params(struct hostapd_bss_config * bss,int full_config)1577 void hostapd_set_security_params(struct hostapd_bss_config *bss,
1578 int full_config)
1579 {
1580 #ifdef CONFIG_WEP
1581 if (bss->individual_wep_key_len == 0) {
1582 /* individual keys are not use; can use key idx0 for
1583 * broadcast keys */
1584 bss->broadcast_key_idx_min = 0;
1585 }
1586 #endif /* CONFIG_WEP */
1587
1588 if ((bss->wpa & 2) && bss->rsn_pairwise == 0)
1589 bss->rsn_pairwise = bss->wpa_pairwise;
1590 if (bss->group_cipher)
1591 bss->wpa_group = bss->group_cipher;
1592 else
1593 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa,
1594 bss->wpa_pairwise,
1595 bss->rsn_pairwise);
1596 if (!bss->wpa_group_rekey_set)
1597 bss->wpa_group_rekey = bss->wpa_group == WPA_CIPHER_TKIP ?
1598 600 : 86400;
1599
1600 if (full_config) {
1601 bss->radius->auth_server = bss->radius->auth_servers;
1602 bss->radius->acct_server = bss->radius->acct_servers;
1603 }
1604
1605 if (bss->wpa && bss->ieee802_1x) {
1606 bss->ssid.security_policy = SECURITY_WPA;
1607 } else if (bss->wpa) {
1608 bss->ssid.security_policy = SECURITY_WPA_PSK;
1609 } else if (bss->ieee802_1x) {
1610 int cipher = WPA_CIPHER_NONE;
1611 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
1612 #ifdef CONFIG_WEP
1613 bss->ssid.wep.default_len = bss->default_wep_key_len;
1614 if (full_config && bss->default_wep_key_len) {
1615 cipher = bss->default_wep_key_len >= 13 ?
1616 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40;
1617 } else if (full_config && bss->ssid.wep.keys_set) {
1618 if (bss->ssid.wep.len[0] >= 13)
1619 cipher = WPA_CIPHER_WEP104;
1620 else
1621 cipher = WPA_CIPHER_WEP40;
1622 }
1623 #endif /* CONFIG_WEP */
1624 bss->wpa_group = cipher;
1625 bss->wpa_pairwise = cipher;
1626 bss->rsn_pairwise = cipher;
1627 if (full_config)
1628 bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
1629 #ifdef CONFIG_WEP
1630 } else if (bss->ssid.wep.keys_set) {
1631 int cipher = WPA_CIPHER_WEP40;
1632 if (bss->ssid.wep.len[0] >= 13)
1633 cipher = WPA_CIPHER_WEP104;
1634 bss->ssid.security_policy = SECURITY_STATIC_WEP;
1635 bss->wpa_group = cipher;
1636 bss->wpa_pairwise = cipher;
1637 bss->rsn_pairwise = cipher;
1638 if (full_config)
1639 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE;
1640 #endif /* CONFIG_WEP */
1641 } else if (bss->osen) {
1642 bss->ssid.security_policy = SECURITY_OSEN;
1643 bss->wpa_group = WPA_CIPHER_CCMP;
1644 bss->wpa_pairwise = 0;
1645 bss->rsn_pairwise = WPA_CIPHER_CCMP;
1646 } else {
1647 bss->ssid.security_policy = SECURITY_PLAINTEXT;
1648 if (full_config) {
1649 bss->wpa_group = WPA_CIPHER_NONE;
1650 bss->wpa_pairwise = WPA_CIPHER_NONE;
1651 bss->rsn_pairwise = WPA_CIPHER_NONE;
1652 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE;
1653 }
1654 }
1655 }
1656
1657
hostapd_sae_pw_id_in_use(struct hostapd_bss_config * conf)1658 int hostapd_sae_pw_id_in_use(struct hostapd_bss_config *conf)
1659 {
1660 int with_id = 0, without_id = 0;
1661 struct sae_password_entry *pw;
1662
1663 if (conf->ssid.wpa_passphrase)
1664 without_id = 1;
1665
1666 for (pw = conf->sae_passwords; pw; pw = pw->next) {
1667 if (pw->identifier)
1668 with_id = 1;
1669 else
1670 without_id = 1;
1671 if (with_id && without_id)
1672 break;
1673 }
1674
1675 if (with_id && !without_id)
1676 return 2;
1677 return with_id;
1678 }
1679
1680
hostapd_sae_pk_in_use(struct hostapd_bss_config * conf)1681 bool hostapd_sae_pk_in_use(struct hostapd_bss_config *conf)
1682 {
1683 #ifdef CONFIG_SAE_PK
1684 struct sae_password_entry *pw;
1685
1686 for (pw = conf->sae_passwords; pw; pw = pw->next) {
1687 if (pw->pk)
1688 return true;
1689 }
1690 #endif /* CONFIG_SAE_PK */
1691
1692 return false;
1693 }
1694
1695
1696 #ifdef CONFIG_SAE_PK
hostapd_sae_pk_exclusively(struct hostapd_bss_config * conf)1697 bool hostapd_sae_pk_exclusively(struct hostapd_bss_config *conf)
1698 {
1699 bool with_pk = false;
1700 struct sae_password_entry *pw;
1701
1702 if (conf->ssid.wpa_passphrase)
1703 return false;
1704
1705 for (pw = conf->sae_passwords; pw; pw = pw->next) {
1706 if (!pw->pk)
1707 return false;
1708 with_pk = true;
1709 }
1710
1711 return with_pk;
1712 }
1713 #endif /* CONFIG_SAE_PK */
1714
1715
hostapd_acl_comp(const void * a,const void * b)1716 int hostapd_acl_comp(const void *a, const void *b)
1717 {
1718 const struct mac_acl_entry *aa = a;
1719 const struct mac_acl_entry *bb = b;
1720 return os_memcmp(aa->addr, bb->addr, sizeof(macaddr));
1721 }
1722
1723
hostapd_add_acl_maclist(struct mac_acl_entry ** acl,int * num,int vlan_id,const u8 * addr)1724 int hostapd_add_acl_maclist(struct mac_acl_entry **acl, int *num,
1725 int vlan_id, const u8 *addr)
1726 {
1727 struct mac_acl_entry *newacl;
1728
1729 newacl = os_realloc_array(*acl, *num + 1, sizeof(**acl));
1730 if (!newacl) {
1731 wpa_printf(MSG_ERROR, "MAC list reallocation failed");
1732 return -1;
1733 }
1734
1735 *acl = newacl;
1736 os_memcpy((*acl)[*num].addr, addr, ETH_ALEN);
1737 os_memset(&(*acl)[*num].vlan_id, 0, sizeof((*acl)[*num].vlan_id));
1738 (*acl)[*num].vlan_id.untagged = vlan_id;
1739 (*acl)[*num].vlan_id.notempty = !!vlan_id;
1740 (*num)++;
1741
1742 return 0;
1743 }
1744
1745
hostapd_remove_acl_mac(struct mac_acl_entry ** acl,int * num,const u8 * addr)1746 void hostapd_remove_acl_mac(struct mac_acl_entry **acl, int *num,
1747 const u8 *addr)
1748 {
1749 int i = 0;
1750
1751 while (i < *num) {
1752 if (os_memcmp((*acl)[i].addr, addr, ETH_ALEN) == 0) {
1753 os_remove_in_array(*acl, *num, sizeof(**acl), i);
1754 (*num)--;
1755 } else {
1756 i++;
1757 }
1758 }
1759 }
1760