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