1 /*
2 * hostapd / Configuration helper functions
3 * Copyright (c) 2003-2024, 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->eap_sim_aka_fast_reauth_limit = 1000;
94 bss->ap_max_inactivity = AP_MAX_INACTIVITY;
95 bss->bss_max_idle = 1;
96 bss->eapol_version = EAPOL_VERSION;
97
98 bss->max_listen_interval = 65535;
99
100 bss->pwd_group = 19; /* ECC: GF(p=256) */
101
102 bss->assoc_sa_query_max_timeout = 1000;
103 bss->assoc_sa_query_retry_timeout = 201;
104 bss->group_mgmt_cipher = WPA_CIPHER_AES_128_CMAC;
105 #ifdef EAP_SERVER_FAST
106 /* both anonymous and authenticated provisioning */
107 bss->eap_fast_prov = 3;
108 bss->pac_key_lifetime = 7 * 24 * 60 * 60;
109 bss->pac_key_refresh_time = 1 * 24 * 60 * 60;
110 #endif /* EAP_SERVER_FAST */
111
112 /* Set to -1 as defaults depends on HT in setup */
113 bss->wmm_enabled = -1;
114
115 #ifdef CONFIG_IEEE80211R_AP
116 bss->ft_over_ds = 1;
117 bss->rkh_pos_timeout = 86400;
118 bss->rkh_neg_timeout = 60;
119 bss->rkh_pull_timeout = 1000;
120 bss->rkh_pull_retries = 4;
121 bss->r0_key_lifetime = 1209600;
122 #endif /* CONFIG_IEEE80211R_AP */
123
124 bss->radius_das_time_window = 300;
125 bss->radius_require_message_authenticator = 1;
126
127 bss->anti_clogging_threshold = 5;
128 bss->sae_sync = 3;
129
130 bss->gas_frag_limit = 1400;
131
132 #ifdef CONFIG_FILS
133 dl_list_init(&bss->fils_realms);
134 bss->fils_hlp_wait_time = 30;
135 bss->dhcp_server_port = DHCP_SERVER_PORT;
136 bss->dhcp_relay_port = DHCP_SERVER_PORT;
137 bss->fils_discovery_min_int = 20;
138 #endif /* CONFIG_FILS */
139
140 bss->broadcast_deauth = 1;
141
142 #ifdef CONFIG_MBO
143 bss->mbo_cell_data_conn_pref = -1;
144 #endif /* CONFIG_MBO */
145
146 /* Disable TLS v1.3 by default for now to avoid interoperability issue.
147 * This can be enabled by default once the implementation has been fully
148 * completed and tested with other implementations. */
149 bss->tls_flags = TLS_CONN_DISABLE_TLSv1_3;
150
151 bss->max_auth_rounds = 100;
152 bss->max_auth_rounds_short = 50;
153
154 bss->send_probe_response = 1;
155
156 #ifdef CONFIG_HS20
157 bss->hs20_release = (HS20_VERSION >> 4) + 1;
158 #endif /* CONFIG_HS20 */
159
160 #ifdef CONFIG_MACSEC
161 bss->mka_priority = DEFAULT_PRIO_NOT_KEY_SERVER;
162 bss->macsec_port = 1;
163 #endif /* CONFIG_MACSEC */
164
165 /* Default to strict CRL checking. */
166 bss->check_crl_strict = 1;
167
168 bss->multi_ap_profile = MULTI_AP_PROFILE_2;
169
170 #ifdef CONFIG_TESTING_OPTIONS
171 bss->sae_commit_status = -1;
172 bss->test_assoc_comeback_type = -1;
173 #endif /* CONFIG_TESTING_OPTIONS */
174
175 #ifdef CONFIG_PASN
176 /* comeback after 10 TUs */
177 bss->pasn_comeback_after = 10;
178 bss->pasn_noauth = 1;
179 #endif /* CONFIG_PASN */
180 }
181
182
hostapd_config_defaults(void)183 struct hostapd_config * hostapd_config_defaults(void)
184 {
185 #define ecw2cw(ecw) ((1 << (ecw)) - 1)
186
187 struct hostapd_config *conf;
188 struct hostapd_bss_config *bss;
189 const int aCWmin = 4, aCWmax = 10;
190 const struct hostapd_wmm_ac_params ac_bk =
191 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
192 const struct hostapd_wmm_ac_params ac_be =
193 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
194 const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
195 { aCWmin - 1, aCWmin, 2, 3008 / 32, 0 };
196 const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
197 { aCWmin - 2, aCWmin - 1, 2, 1504 / 32, 0 };
198 const struct hostapd_tx_queue_params txq_bk =
199 { 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 };
200 const struct hostapd_tx_queue_params txq_be =
201 { 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0};
202 const struct hostapd_tx_queue_params txq_vi =
203 { 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30};
204 const struct hostapd_tx_queue_params txq_vo =
205 { 1, (ecw2cw(aCWmin) + 1) / 4 - 1,
206 (ecw2cw(aCWmin) + 1) / 2 - 1, 15};
207
208 #undef ecw2cw
209
210 conf = os_zalloc(sizeof(*conf));
211 bss = os_zalloc(sizeof(*bss));
212 if (conf == NULL || bss == NULL) {
213 wpa_printf(MSG_ERROR, "Failed to allocate memory for "
214 "configuration data.");
215 os_free(conf);
216 os_free(bss);
217 return NULL;
218 }
219 conf->bss = os_calloc(1, sizeof(struct hostapd_bss_config *));
220 if (conf->bss == NULL) {
221 os_free(conf);
222 os_free(bss);
223 return NULL;
224 }
225 conf->bss[0] = bss;
226
227 bss->radius = os_zalloc(sizeof(*bss->radius));
228 if (bss->radius == NULL) {
229 os_free(conf->bss);
230 os_free(conf);
231 os_free(bss);
232 return NULL;
233 }
234
235 hostapd_config_defaults_bss(bss);
236
237 conf->num_bss = 1;
238
239 conf->beacon_int = 100;
240 conf->rts_threshold = -2; /* use driver default: 2347 */
241 conf->fragm_threshold = -2; /* user driver default: 2346 */
242 /* Set to invalid value means do not add Power Constraint IE */
243 conf->local_pwr_constraint = -1;
244
245 conf->wmm_ac_params[0] = ac_be;
246 conf->wmm_ac_params[1] = ac_bk;
247 conf->wmm_ac_params[2] = ac_vi;
248 conf->wmm_ac_params[3] = ac_vo;
249
250 conf->tx_queue[0] = txq_vo;
251 conf->tx_queue[1] = txq_vi;
252 conf->tx_queue[2] = txq_be;
253 conf->tx_queue[3] = txq_bk;
254
255 conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED;
256
257 conf->ap_table_max_size = 255;
258 conf->ap_table_expiration_time = 60;
259 conf->track_sta_max_age = 180;
260
261 #ifdef CONFIG_TESTING_OPTIONS
262 conf->ignore_probe_probability = 0.0;
263 conf->ignore_auth_probability = 0.0;
264 conf->ignore_assoc_probability = 0.0;
265 conf->ignore_reassoc_probability = 0.0;
266 conf->corrupt_gtk_rekey_mic_probability = 0.0;
267 conf->ecsa_ie_only = 0;
268 #endif /* CONFIG_TESTING_OPTIONS */
269
270 conf->acs = 0;
271 conf->acs_ch_list.num = 0;
272 #ifdef CONFIG_ACS
273 conf->acs_num_scans = 5;
274 #endif /* CONFIG_ACS */
275
276 #ifdef CONFIG_IEEE80211AX
277 conf->he_op.he_rts_threshold = HE_OPERATION_RTS_THRESHOLD_MASK >>
278 HE_OPERATION_RTS_THRESHOLD_OFFSET;
279 /* Set default basic MCS/NSS set to single stream MCS 0-7 */
280 conf->he_op.he_basic_mcs_nss_set = 0xfffc;
281 conf->he_op.he_bss_color_disabled = 1;
282 conf->he_op.he_bss_color_partial = 0;
283 conf->he_op.he_bss_color = os_random() % 63 + 1;
284 conf->he_op.he_twt_responder = 1;
285 conf->he_6ghz_max_mpdu = 2;
286 conf->he_6ghz_max_ampdu_len_exp = 7;
287 conf->he_6ghz_rx_ant_pat = 1;
288 conf->he_6ghz_tx_ant_pat = 1;
289 conf->he_6ghz_reg_pwr_type = HE_REG_INFO_6GHZ_AP_TYPE_VLP;
290 conf->reg_def_cli_eirp_psd = -1;
291 conf->reg_sub_cli_eirp_psd = -1;
292 conf->reg_def_cli_eirp = -1;
293 #endif /* CONFIG_IEEE80211AX */
294
295 /* The third octet of the country string uses an ASCII space character
296 * by default to indicate that the regulations encompass all
297 * environments for the current frequency band in the country. */
298 conf->country[2] = ' ';
299
300 conf->rssi_reject_assoc_rssi = 0;
301 conf->rssi_reject_assoc_timeout = 30;
302
303 #ifdef CONFIG_AIRTIME_POLICY
304 conf->airtime_update_interval = AIRTIME_DEFAULT_UPDATE_INTERVAL;
305 #endif /* CONFIG_AIRTIME_POLICY */
306
307 hostapd_set_and_check_bw320_offset(conf, 0);
308
309 return conf;
310 }
311
312
hostapd_mac_comp(const void * a,const void * b)313 int hostapd_mac_comp(const void *a, const void *b)
314 {
315 return os_memcmp(a, b, sizeof(macaddr));
316 }
317
318
hostapd_config_read_wpa_psk(const char * fname,struct hostapd_ssid * ssid)319 static int hostapd_config_read_wpa_psk(const char *fname,
320 struct hostapd_ssid *ssid)
321 {
322 FILE *f;
323 char buf[128], *pos;
324 const char *keyid;
325 char *context;
326 char *context2;
327 char *token;
328 char *name;
329 char *value;
330 int line = 0, ret = 0, len, ok;
331 u8 addr[ETH_ALEN];
332 struct hostapd_wpa_psk *psk;
333
334 if (!fname)
335 return 0;
336
337 f = fopen(fname, "r");
338 if (!f) {
339 wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname);
340 return -1;
341 }
342
343 while (fgets(buf, sizeof(buf), f)) {
344 int vlan_id = 0;
345 int wps = 0;
346
347 line++;
348
349 if (buf[0] == '#')
350 continue;
351 pos = buf;
352 while (*pos != '\0') {
353 if (*pos == '\n') {
354 *pos = '\0';
355 break;
356 }
357 pos++;
358 }
359 if (buf[0] == '\0')
360 continue;
361
362 context = NULL;
363 keyid = NULL;
364 while ((token = str_token(buf, " ", &context))) {
365 if (!os_strchr(token, '='))
366 break;
367 context2 = NULL;
368 name = str_token(token, "=", &context2);
369 if (!name)
370 break;
371 value = str_token(token, "", &context2);
372 if (!value)
373 value = "";
374 if (!os_strcmp(name, "keyid")) {
375 keyid = value;
376 } else if (!os_strcmp(name, "wps")) {
377 wps = atoi(value);
378 } else if (!os_strcmp(name, "vlanid")) {
379 vlan_id = atoi(value);
380 } else {
381 wpa_printf(MSG_ERROR,
382 "Unrecognized '%s=%s' on line %d in '%s'",
383 name, value, line, fname);
384 ret = -1;
385 break;
386 }
387 }
388
389 if (ret == -1)
390 break;
391
392 if (!token)
393 token = "";
394 if (hwaddr_aton(token, addr)) {
395 wpa_printf(MSG_ERROR,
396 "Invalid MAC address '%s' on line %d in '%s'",
397 token, line, fname);
398 ret = -1;
399 break;
400 }
401
402 psk = os_zalloc(sizeof(*psk));
403 if (psk == NULL) {
404 wpa_printf(MSG_ERROR, "WPA PSK allocation failed");
405 ret = -1;
406 break;
407 }
408 psk->vlan_id = vlan_id;
409 if (is_zero_ether_addr(addr))
410 psk->group = 1;
411 else
412 os_memcpy(psk->addr, addr, ETH_ALEN);
413
414 pos = str_token(buf, "", &context);
415 if (!pos) {
416 wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'",
417 line, fname);
418 os_free(psk);
419 ret = -1;
420 break;
421 }
422
423 ok = 0;
424 len = os_strlen(pos);
425 if (len == 2 * PMK_LEN &&
426 hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
427 ok = 1;
428 else if (len >= 8 && len < 64 &&
429 pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len,
430 4096, psk->psk, PMK_LEN) == 0)
431 ok = 1;
432 if (!ok) {
433 wpa_printf(MSG_ERROR,
434 "Invalid PSK '%s' on line %d in '%s'",
435 pos, line, fname);
436 os_free(psk);
437 ret = -1;
438 break;
439 }
440
441 if (keyid) {
442 len = os_strlcpy(psk->keyid, keyid, sizeof(psk->keyid));
443 if ((size_t) len >= sizeof(psk->keyid)) {
444 wpa_printf(MSG_ERROR,
445 "PSK keyid too long on line %d in '%s'",
446 line, fname);
447 os_free(psk);
448 ret = -1;
449 break;
450 }
451 }
452
453 psk->wps = wps;
454
455 psk->next = ssid->wpa_psk;
456 ssid->wpa_psk = psk;
457 }
458
459 fclose(f);
460
461 return ret;
462 }
463
464
hostapd_derive_psk(struct hostapd_ssid * ssid)465 static int hostapd_derive_psk(struct hostapd_ssid *ssid)
466 {
467 ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
468 if (ssid->wpa_psk == NULL) {
469 wpa_printf(MSG_ERROR, "Unable to alloc space for PSK");
470 return -1;
471 }
472 wpa_hexdump_ascii(MSG_DEBUG, "SSID",
473 (u8 *) ssid->ssid, ssid->ssid_len);
474 wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)",
475 (u8 *) ssid->wpa_passphrase,
476 os_strlen(ssid->wpa_passphrase));
477 if (pbkdf2_sha1(ssid->wpa_passphrase,
478 ssid->ssid, ssid->ssid_len,
479 4096, ssid->wpa_psk->psk, PMK_LEN) != 0) {
480 wpa_printf(MSG_ERROR, "Error in pbkdf2_sha1()");
481 return -1;
482 }
483 wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)",
484 ssid->wpa_psk->psk, PMK_LEN);
485 return 0;
486 }
487
488
hostapd_setup_sae_pt(struct hostapd_bss_config * conf)489 int hostapd_setup_sae_pt(struct hostapd_bss_config *conf)
490 {
491 #ifdef CONFIG_SAE
492 struct hostapd_ssid *ssid = &conf->ssid;
493 struct sae_password_entry *pw;
494 int *groups = conf->sae_groups;
495 int default_groups[] = { 19, 0, 0 };
496
497 if ((conf->sae_pwe == SAE_PWE_HUNT_AND_PECK &&
498 !hostapd_sae_pw_id_in_use(conf) &&
499 !wpa_key_mgmt_sae_ext_key(conf->wpa_key_mgmt |
500 conf->rsn_override_key_mgmt |
501 conf->rsn_override_key_mgmt_2) &&
502 !hostapd_sae_pk_in_use(conf)) ||
503 conf->sae_pwe == SAE_PWE_FORCE_HUNT_AND_PECK ||
504 !wpa_key_mgmt_sae(conf->wpa_key_mgmt |
505 conf->rsn_override_key_mgmt |
506 conf->rsn_override_key_mgmt_2))
507 return 0; /* PT not needed */
508
509 if (!groups) {
510 groups = default_groups;
511 if (wpa_key_mgmt_sae_ext_key(conf->wpa_key_mgmt |
512 conf->rsn_override_key_mgmt |
513 conf->rsn_override_key_mgmt_2))
514 default_groups[1] = 20;
515 }
516
517 sae_deinit_pt(ssid->pt);
518 ssid->pt = NULL;
519 if (ssid->wpa_passphrase) {
520 ssid->pt = sae_derive_pt(groups, ssid->ssid, ssid->ssid_len,
521 (const u8 *) ssid->wpa_passphrase,
522 os_strlen(ssid->wpa_passphrase),
523 NULL);
524 if (!ssid->pt)
525 return -1;
526 }
527
528 for (pw = conf->sae_passwords; pw; pw = pw->next) {
529 sae_deinit_pt(pw->pt);
530 pw->pt = sae_derive_pt(groups, ssid->ssid, ssid->ssid_len,
531 (const u8 *) pw->password,
532 os_strlen(pw->password),
533 pw->identifier);
534 if (!pw->pt)
535 return -1;
536 }
537 #endif /* CONFIG_SAE */
538
539 return 0;
540 }
541
542
hostapd_setup_wpa_psk(struct hostapd_bss_config * conf)543 int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
544 {
545 struct hostapd_ssid *ssid = &conf->ssid;
546
547 if (hostapd_setup_sae_pt(conf) < 0)
548 return -1;
549
550 if (ssid->wpa_passphrase != NULL) {
551 if (ssid->wpa_psk != NULL) {
552 wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK "
553 "instead of passphrase");
554 } else {
555 wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on "
556 "passphrase");
557 if (hostapd_derive_psk(ssid) < 0)
558 return -1;
559 }
560 ssid->wpa_psk->group = 1;
561 }
562
563 return hostapd_config_read_wpa_psk(ssid->wpa_psk_file, &conf->ssid);
564 }
565
566
hostapd_config_free_radius(struct hostapd_radius_server * servers,int num_servers)567 static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
568 int num_servers)
569 {
570 int i;
571
572 for (i = 0; i < num_servers; i++) {
573 os_free(servers[i].shared_secret);
574 os_free(servers[i].ca_cert);
575 os_free(servers[i].client_cert);
576 os_free(servers[i].private_key);
577 os_free(servers[i].private_key_passwd);
578 }
579 os_free(servers);
580 }
581
582
583 struct hostapd_radius_attr *
hostapd_config_get_radius_attr(struct hostapd_radius_attr * attr,u8 type)584 hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type)
585 {
586 for (; attr; attr = attr->next) {
587 if (attr->type == type)
588 return attr;
589 }
590 return NULL;
591 }
592
593
hostapd_parse_radius_attr(const char * value)594 struct hostapd_radius_attr * hostapd_parse_radius_attr(const char *value)
595 {
596 const char *pos;
597 char syntax;
598 struct hostapd_radius_attr *attr;
599 size_t len;
600
601 attr = os_zalloc(sizeof(*attr));
602 if (!attr)
603 return NULL;
604
605 attr->type = atoi(value);
606
607 pos = os_strchr(value, ':');
608 if (!pos) {
609 attr->val = wpabuf_alloc(1);
610 if (!attr->val) {
611 os_free(attr);
612 return NULL;
613 }
614 wpabuf_put_u8(attr->val, 0);
615 return attr;
616 }
617
618 pos++;
619 if (pos[0] == '\0' || pos[1] != ':') {
620 os_free(attr);
621 return NULL;
622 }
623 syntax = *pos++;
624 pos++;
625
626 switch (syntax) {
627 case 's':
628 attr->val = wpabuf_alloc_copy(pos, os_strlen(pos));
629 break;
630 case 'x':
631 len = os_strlen(pos);
632 if (len & 1)
633 break;
634 len /= 2;
635 attr->val = wpabuf_alloc(len);
636 if (!attr->val)
637 break;
638 if (hexstr2bin(pos, wpabuf_put(attr->val, len), len) < 0) {
639 wpabuf_free(attr->val);
640 os_free(attr);
641 return NULL;
642 }
643 break;
644 case 'd':
645 attr->val = wpabuf_alloc(4);
646 if (attr->val)
647 wpabuf_put_be32(attr->val, atoi(pos));
648 break;
649 default:
650 os_free(attr);
651 return NULL;
652 }
653
654 if (!attr->val) {
655 os_free(attr);
656 return NULL;
657 }
658
659 return attr;
660 }
661
662
hostapd_config_free_radius_attr(struct hostapd_radius_attr * attr)663 void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr)
664 {
665 struct hostapd_radius_attr *prev;
666
667 while (attr) {
668 prev = attr;
669 attr = attr->next;
670 wpabuf_free(prev->val);
671 os_free(prev);
672 }
673 }
674
675
hostapd_config_free_eap_user(struct hostapd_eap_user * user)676 void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
677 {
678 hostapd_config_free_radius_attr(user->accept_attr);
679 os_free(user->identity);
680 bin_clear_free(user->password, user->password_len);
681 bin_clear_free(user->salt, user->salt_len);
682 os_free(user);
683 }
684
685
hostapd_config_free_eap_users(struct hostapd_eap_user * user)686 void hostapd_config_free_eap_users(struct hostapd_eap_user *user)
687 {
688 struct hostapd_eap_user *prev_user;
689
690 while (user) {
691 prev_user = user;
692 user = user->next;
693 hostapd_config_free_eap_user(prev_user);
694 }
695 }
696
697
698 #ifdef CONFIG_WEP
hostapd_config_free_wep(struct hostapd_wep_keys * keys)699 static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
700 {
701 int i;
702 for (i = 0; i < NUM_WEP_KEYS; i++) {
703 bin_clear_free(keys->key[i], keys->len[i]);
704 keys->key[i] = NULL;
705 }
706 }
707 #endif /* CONFIG_WEP */
708
709
hostapd_config_clear_wpa_psk(struct hostapd_wpa_psk ** l)710 void hostapd_config_clear_wpa_psk(struct hostapd_wpa_psk **l)
711 {
712 struct hostapd_wpa_psk *psk, *tmp;
713
714 for (psk = *l; psk;) {
715 tmp = psk;
716 psk = psk->next;
717 bin_clear_free(tmp, sizeof(*tmp));
718 }
719 *l = NULL;
720 }
721
722
723 #ifdef CONFIG_IEEE80211R_AP
724
hostapd_config_clear_rxkhs(struct hostapd_bss_config * conf)725 void hostapd_config_clear_rxkhs(struct hostapd_bss_config *conf)
726 {
727 struct ft_remote_r0kh *r0kh, *r0kh_prev;
728 struct ft_remote_r1kh *r1kh, *r1kh_prev;
729
730 r0kh = conf->r0kh_list;
731 conf->r0kh_list = NULL;
732 while (r0kh) {
733 r0kh_prev = r0kh;
734 r0kh = r0kh->next;
735 os_free(r0kh_prev);
736 }
737
738 r1kh = conf->r1kh_list;
739 conf->r1kh_list = NULL;
740 while (r1kh) {
741 r1kh_prev = r1kh;
742 r1kh = r1kh->next;
743 os_free(r1kh_prev);
744 }
745 }
746
747 #endif /* CONFIG_IEEE80211R_AP */
748
749
hostapd_config_free_anqp_elem(struct hostapd_bss_config * conf)750 static void hostapd_config_free_anqp_elem(struct hostapd_bss_config *conf)
751 {
752 struct anqp_element *elem;
753
754 while ((elem = dl_list_first(&conf->anqp_elem, struct anqp_element,
755 list))) {
756 dl_list_del(&elem->list);
757 wpabuf_free(elem->payload);
758 os_free(elem);
759 }
760 }
761
762
hostapd_config_free_fils_realms(struct hostapd_bss_config * conf)763 static void hostapd_config_free_fils_realms(struct hostapd_bss_config *conf)
764 {
765 #ifdef CONFIG_FILS
766 struct fils_realm *realm;
767
768 while ((realm = dl_list_first(&conf->fils_realms, struct fils_realm,
769 list))) {
770 dl_list_del(&realm->list);
771 os_free(realm);
772 }
773 #endif /* CONFIG_FILS */
774 }
775
776
hostapd_config_free_sae_passwords(struct hostapd_bss_config * conf)777 static void hostapd_config_free_sae_passwords(struct hostapd_bss_config *conf)
778 {
779 struct sae_password_entry *pw, *tmp;
780
781 pw = conf->sae_passwords;
782 conf->sae_passwords = NULL;
783 while (pw) {
784 tmp = pw;
785 pw = pw->next;
786 str_clear_free(tmp->password);
787 os_free(tmp->identifier);
788 #ifdef CONFIG_SAE
789 sae_deinit_pt(tmp->pt);
790 #endif /* CONFIG_SAE */
791 #ifdef CONFIG_SAE_PK
792 sae_deinit_pk(tmp->pk);
793 #endif /* CONFIG_SAE_PK */
794 os_free(tmp->success_mac);
795 os_free(tmp->fail_mac);
796 os_free(tmp);
797 }
798 }
799
800
801 #ifdef CONFIG_DPP2
hostapd_dpp_controller_conf_free(struct dpp_controller_conf * conf)802 static void hostapd_dpp_controller_conf_free(struct dpp_controller_conf *conf)
803 {
804 struct dpp_controller_conf *prev;
805
806 while (conf) {
807 prev = conf;
808 conf = conf->next;
809 os_free(prev);
810 }
811 }
812 #endif /* CONFIG_DPP2 */
813
814
hostapd_config_free_bss(struct hostapd_bss_config * conf)815 void hostapd_config_free_bss(struct hostapd_bss_config *conf)
816 {
817 #if defined(CONFIG_WPS) || defined(CONFIG_HS20)
818 size_t i;
819 #endif
820
821 if (conf == NULL)
822 return;
823
824 hostapd_config_clear_wpa_psk(&conf->ssid.wpa_psk);
825
826 str_clear_free(conf->ssid.wpa_passphrase);
827 os_free(conf->ssid.wpa_psk_file);
828 #ifdef CONFIG_WEP
829 hostapd_config_free_wep(&conf->ssid.wep);
830 #endif /* CONFIG_WEP */
831 #ifdef CONFIG_FULL_DYNAMIC_VLAN
832 os_free(conf->ssid.vlan_tagged_interface);
833 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
834 #ifdef CONFIG_SAE
835 sae_deinit_pt(conf->ssid.pt);
836 #endif /* CONFIG_SAE */
837
838 hostapd_config_free_eap_users(conf->eap_user);
839 os_free(conf->eap_user_sqlite);
840
841 os_free(conf->eap_req_id_text);
842 os_free(conf->erp_domain);
843 os_free(conf->accept_mac);
844 os_free(conf->deny_mac);
845 os_free(conf->nas_identifier);
846 if (conf->radius) {
847 hostapd_config_free_radius(conf->radius->auth_servers,
848 conf->radius->num_auth_servers);
849 hostapd_config_free_radius(conf->radius->acct_servers,
850 conf->radius->num_acct_servers);
851 os_free(conf->radius->force_client_dev);
852 }
853 hostapd_config_free_radius_attr(conf->radius_auth_req_attr);
854 hostapd_config_free_radius_attr(conf->radius_acct_req_attr);
855 os_free(conf->radius_req_attr_sqlite);
856 os_free(conf->rsn_preauth_interfaces);
857 os_free(conf->ctrl_interface);
858 os_free(conf->config_id);
859 os_free(conf->ca_cert);
860 os_free(conf->server_cert);
861 os_free(conf->server_cert2);
862 os_free(conf->private_key);
863 os_free(conf->private_key2);
864 os_free(conf->private_key_passwd);
865 os_free(conf->private_key_passwd2);
866 os_free(conf->check_cert_subject);
867 os_free(conf->ocsp_stapling_response);
868 os_free(conf->ocsp_stapling_response_multi);
869 os_free(conf->dh_file);
870 os_free(conf->openssl_ciphers);
871 os_free(conf->openssl_ecdh_curves);
872 os_free(conf->pac_opaque_encr_key);
873 os_free(conf->eap_fast_a_id);
874 os_free(conf->eap_fast_a_id_info);
875 os_free(conf->eap_sim_db);
876 os_free(conf->imsi_privacy_key);
877 os_free(conf->radius_server_clients);
878 os_free(conf->radius);
879 os_free(conf->radius_das_shared_secret);
880 hostapd_config_free_vlan(conf);
881 os_free(conf->time_zone);
882
883 #ifdef CONFIG_IEEE80211R_AP
884 hostapd_config_clear_rxkhs(conf);
885 os_free(conf->rxkh_file);
886 conf->rxkh_file = NULL;
887 #endif /* CONFIG_IEEE80211R_AP */
888
889 #ifdef CONFIG_WPS
890 os_free(conf->wps_pin_requests);
891 os_free(conf->device_name);
892 os_free(conf->manufacturer);
893 os_free(conf->model_name);
894 os_free(conf->model_number);
895 os_free(conf->serial_number);
896 os_free(conf->config_methods);
897 os_free(conf->ap_pin);
898 os_free(conf->extra_cred);
899 os_free(conf->ap_settings);
900 hostapd_config_clear_wpa_psk(&conf->multi_ap_backhaul_ssid.wpa_psk);
901 str_clear_free(conf->multi_ap_backhaul_ssid.wpa_passphrase);
902 os_free(conf->upnp_iface);
903 os_free(conf->friendly_name);
904 os_free(conf->manufacturer_url);
905 os_free(conf->model_description);
906 os_free(conf->model_url);
907 os_free(conf->upc);
908 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++)
909 wpabuf_free(conf->wps_vendor_ext[i]);
910 wpabuf_free(conf->wps_application_ext);
911 wpabuf_free(conf->wps_nfc_dh_pubkey);
912 wpabuf_free(conf->wps_nfc_dh_privkey);
913 wpabuf_free(conf->wps_nfc_dev_pw);
914 #endif /* CONFIG_WPS */
915
916 os_free(conf->roaming_consortium);
917 os_free(conf->venue_name);
918 os_free(conf->venue_url);
919 os_free(conf->nai_realm_data);
920 os_free(conf->network_auth_type);
921 os_free(conf->anqp_3gpp_cell_net);
922 os_free(conf->domain_name);
923 hostapd_config_free_anqp_elem(conf);
924
925 #ifdef CONFIG_RADIUS_TEST
926 os_free(conf->dump_msk_file);
927 #endif /* CONFIG_RADIUS_TEST */
928
929 #ifdef CONFIG_HS20
930 os_free(conf->hs20_oper_friendly_name);
931 os_free(conf->hs20_wan_metrics);
932 os_free(conf->hs20_connection_capability);
933 os_free(conf->hs20_operating_class);
934 os_free(conf->t_c_filename);
935 os_free(conf->t_c_server_url);
936 #endif /* CONFIG_HS20 */
937
938 wpabuf_free(conf->vendor_elements);
939 wpabuf_free(conf->assocresp_elements);
940
941 os_free(conf->sae_groups);
942 #ifdef CONFIG_OWE
943 os_free(conf->owe_groups);
944 #endif /* CONFIG_OWE */
945
946 os_free(conf->wowlan_triggers);
947
948 os_free(conf->server_id);
949
950 #ifdef CONFIG_TESTING_OPTIONS
951 wpabuf_free(conf->own_ie_override);
952 wpabuf_free(conf->rsne_override);
953 wpabuf_free(conf->rsnoe_override);
954 wpabuf_free(conf->rsno2e_override);
955 wpabuf_free(conf->rsnxe_override);
956 wpabuf_free(conf->rsnxoe_override);
957 wpabuf_free(conf->sae_commit_override);
958 wpabuf_free(conf->rsne_override_eapol);
959 wpabuf_free(conf->rsnxe_override_eapol);
960 wpabuf_free(conf->rsne_override_ft);
961 wpabuf_free(conf->rsnxe_override_ft);
962 wpabuf_free(conf->gtk_rsc_override);
963 wpabuf_free(conf->igtk_rsc_override);
964 wpabuf_free(conf->eapol_m1_elements);
965 wpabuf_free(conf->eapol_m3_elements);
966 wpabuf_free(conf->presp_elements);
967 #endif /* CONFIG_TESTING_OPTIONS */
968
969 os_free(conf->no_probe_resp_if_seen_on);
970 os_free(conf->no_auth_if_seen_on);
971
972 hostapd_config_free_fils_realms(conf);
973
974 #ifdef CONFIG_DPP
975 os_free(conf->dpp_name);
976 os_free(conf->dpp_mud_url);
977 os_free(conf->dpp_extra_conf_req_name);
978 os_free(conf->dpp_extra_conf_req_value);
979 os_free(conf->dpp_connector);
980 wpabuf_free(conf->dpp_netaccesskey);
981 wpabuf_free(conf->dpp_csign);
982 #ifdef CONFIG_DPP2
983 hostapd_dpp_controller_conf_free(conf->dpp_controller);
984 #endif /* CONFIG_DPP2 */
985 #endif /* CONFIG_DPP */
986
987 hostapd_config_free_sae_passwords(conf);
988
989 #ifdef CONFIG_AIRTIME_POLICY
990 {
991 struct airtime_sta_weight *wt, *wt_prev;
992
993 wt = conf->airtime_weight_list;
994 conf->airtime_weight_list = NULL;
995 while (wt) {
996 wt_prev = wt;
997 wt = wt->next;
998 os_free(wt_prev);
999 }
1000 }
1001 #endif /* CONFIG_AIRTIME_POLICY */
1002
1003 #ifdef CONFIG_PASN
1004 os_free(conf->pasn_groups);
1005 #endif /* CONFIG_PASN */
1006
1007 os_free(conf);
1008 }
1009
1010
1011 /**
1012 * hostapd_config_free - Free hostapd configuration
1013 * @conf: Configuration data from hostapd_config_read().
1014 */
hostapd_config_free(struct hostapd_config * conf)1015 void hostapd_config_free(struct hostapd_config *conf)
1016 {
1017 size_t i;
1018
1019 if (conf == NULL)
1020 return;
1021
1022 for (i = 0; i < conf->num_bss; i++)
1023 hostapd_config_free_bss(conf->bss[i]);
1024 os_free(conf->bss);
1025 os_free(conf->supported_rates);
1026 os_free(conf->basic_rates);
1027 os_free(conf->acs_ch_list.range);
1028 os_free(conf->acs_freq_list.range);
1029 os_free(conf->driver_params);
1030 #ifdef CONFIG_ACS
1031 os_free(conf->acs_chan_bias);
1032 #endif /* CONFIG_ACS */
1033 wpabuf_free(conf->lci);
1034 wpabuf_free(conf->civic);
1035
1036 os_free(conf);
1037 }
1038
1039
1040 /**
1041 * hostapd_maclist_found - Find a MAC address from a list
1042 * @list: MAC address list
1043 * @num_entries: Number of addresses in the list
1044 * @addr: Address to search for
1045 * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed
1046 * Returns: 1 if address is in the list or 0 if not.
1047 *
1048 * Perform a binary search for given MAC address from a pre-sorted list.
1049 */
hostapd_maclist_found(struct mac_acl_entry * list,int num_entries,const u8 * addr,struct vlan_description * vlan_id)1050 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries,
1051 const u8 *addr, struct vlan_description *vlan_id)
1052 {
1053 int start, end, middle, res;
1054
1055 start = 0;
1056 end = num_entries - 1;
1057
1058 while (start <= end) {
1059 middle = (start + end) / 2;
1060 res = os_memcmp(list[middle].addr, addr, ETH_ALEN);
1061 if (res == 0) {
1062 if (vlan_id)
1063 *vlan_id = list[middle].vlan_id;
1064 return 1;
1065 }
1066 if (res < 0)
1067 start = middle + 1;
1068 else
1069 end = middle - 1;
1070 }
1071
1072 return 0;
1073 }
1074
1075
hostapd_rate_found(int * list,int rate)1076 int hostapd_rate_found(int *list, int rate)
1077 {
1078 int i;
1079
1080 if (list == NULL)
1081 return 0;
1082
1083 for (i = 0; list[i] >= 0; i++)
1084 if (list[i] == rate)
1085 return 1;
1086
1087 return 0;
1088 }
1089
1090
hostapd_vlan_valid(struct hostapd_vlan * vlan,struct vlan_description * vlan_desc)1091 int hostapd_vlan_valid(struct hostapd_vlan *vlan,
1092 struct vlan_description *vlan_desc)
1093 {
1094 struct hostapd_vlan *v = vlan;
1095 int i;
1096
1097 if (!vlan_desc->notempty || vlan_desc->untagged < 0 ||
1098 vlan_desc->untagged > MAX_VLAN_ID)
1099 return 0;
1100 for (i = 0; i < MAX_NUM_TAGGED_VLAN; i++) {
1101 if (vlan_desc->tagged[i] < 0 ||
1102 vlan_desc->tagged[i] > MAX_VLAN_ID)
1103 return 0;
1104 }
1105 if (!vlan_desc->untagged && !vlan_desc->tagged[0])
1106 return 0;
1107
1108 while (v) {
1109 if (!vlan_compare(&v->vlan_desc, vlan_desc) ||
1110 v->vlan_id == VLAN_ID_WILDCARD)
1111 return 1;
1112 v = v->next;
1113 }
1114 return 0;
1115 }
1116
1117
hostapd_get_vlan_id_ifname(struct hostapd_vlan * vlan,int vlan_id)1118 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id)
1119 {
1120 struct hostapd_vlan *v = vlan;
1121 while (v) {
1122 if (v->vlan_id == vlan_id)
1123 return v->ifname;
1124 v = v->next;
1125 }
1126 return NULL;
1127 }
1128
1129
hostapd_get_psk(const struct hostapd_bss_config * conf,const u8 * addr,const u8 * p2p_dev_addr,const u8 * prev_psk,int * vlan_id)1130 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
1131 const u8 *addr, const u8 *p2p_dev_addr,
1132 const u8 *prev_psk, int *vlan_id)
1133 {
1134 struct hostapd_wpa_psk *psk;
1135 int next_ok = prev_psk == NULL;
1136
1137 if (vlan_id)
1138 *vlan_id = 0;
1139
1140 if (p2p_dev_addr && !is_zero_ether_addr(p2p_dev_addr)) {
1141 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
1142 " p2p_dev_addr=" MACSTR " prev_psk=%p",
1143 MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk);
1144 addr = NULL; /* Use P2P Device Address for matching */
1145 } else {
1146 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
1147 " prev_psk=%p",
1148 MAC2STR(addr), prev_psk);
1149 }
1150
1151 for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
1152 if (next_ok &&
1153 (psk->group ||
1154 (addr && ether_addr_equal(psk->addr, addr)) ||
1155 (!addr && p2p_dev_addr &&
1156 ether_addr_equal(psk->p2p_dev_addr, p2p_dev_addr)))) {
1157 if (vlan_id)
1158 *vlan_id = psk->vlan_id;
1159 return psk->psk;
1160 }
1161
1162 if (psk->psk == prev_psk)
1163 next_ok = 1;
1164 }
1165
1166 return NULL;
1167 }
1168
1169
1170 #ifdef CONFIG_SAE_PK
hostapd_sae_pk_password_without_pk(struct hostapd_bss_config * bss)1171 static bool hostapd_sae_pk_password_without_pk(struct hostapd_bss_config *bss)
1172 {
1173 struct sae_password_entry *pw;
1174 bool res = false;
1175
1176 if (bss->ssid.wpa_passphrase &&
1177 #ifdef CONFIG_TESTING_OPTIONS
1178 !bss->sae_pk_password_check_skip &&
1179 #endif /* CONFIG_TESTING_OPTIONS */
1180 sae_pk_valid_password(bss->ssid.wpa_passphrase))
1181 res = true;
1182
1183 for (pw = bss->sae_passwords; pw; pw = pw->next) {
1184 if (!pw->pk &&
1185 #ifdef CONFIG_TESTING_OPTIONS
1186 !bss->sae_pk_password_check_skip &&
1187 #endif /* CONFIG_TESTING_OPTIONS */
1188 sae_pk_valid_password(pw->password))
1189 return true;
1190
1191 if (bss->ssid.wpa_passphrase && res && pw->pk &&
1192 os_strcmp(bss->ssid.wpa_passphrase, pw->password) == 0)
1193 res = false;
1194 }
1195
1196 return res;
1197 }
1198 #endif /* CONFIG_SAE_PK */
1199
1200
hostapd_config_check_bss_6g(struct hostapd_bss_config * bss)1201 static bool hostapd_config_check_bss_6g(struct hostapd_bss_config *bss)
1202 {
1203 if (bss->wpa != WPA_PROTO_RSN) {
1204 wpa_printf(MSG_ERROR,
1205 "Pre-RSNA security methods are not allowed in 6 GHz");
1206 return false;
1207 }
1208
1209 if (bss->ieee80211w != MGMT_FRAME_PROTECTION_REQUIRED) {
1210 wpa_printf(MSG_ERROR,
1211 "Management frame protection is required in 6 GHz");
1212 return false;
1213 }
1214
1215 if (bss->wpa_key_mgmt & (WPA_KEY_MGMT_PSK |
1216 WPA_KEY_MGMT_FT_PSK |
1217 WPA_KEY_MGMT_PSK_SHA256)) {
1218 wpa_printf(MSG_ERROR, "Invalid AKM suite for 6 GHz");
1219 return false;
1220 }
1221
1222 if (bss->rsn_pairwise & (WPA_CIPHER_WEP40 |
1223 WPA_CIPHER_WEP104 |
1224 WPA_CIPHER_TKIP)) {
1225 wpa_printf(MSG_ERROR,
1226 "Invalid pairwise cipher suite for 6 GHz");
1227 return false;
1228 }
1229
1230 if (bss->wpa_group & (WPA_CIPHER_WEP40 |
1231 WPA_CIPHER_WEP104 |
1232 WPA_CIPHER_TKIP)) {
1233 wpa_printf(MSG_ERROR, "Invalid group cipher suite for 6 GHz");
1234 return false;
1235 }
1236
1237 #ifdef CONFIG_SAE
1238 if (wpa_key_mgmt_sae(bss->wpa_key_mgmt) &&
1239 bss->sae_pwe == SAE_PWE_HUNT_AND_PECK) {
1240 wpa_printf(MSG_INFO, "SAE: Enabling SAE H2E on 6 GHz");
1241 bss->sae_pwe = SAE_PWE_BOTH;
1242 }
1243 #endif /* CONFIG_SAE */
1244
1245 return true;
1246 }
1247
1248
hostapd_config_check_bss(struct hostapd_bss_config * bss,struct hostapd_config * conf,int full_config)1249 static int hostapd_config_check_bss(struct hostapd_bss_config *bss,
1250 struct hostapd_config *conf,
1251 int full_config)
1252 {
1253 if (full_config && is_6ghz_op_class(conf->op_class) &&
1254 !hostapd_config_check_bss_6g(bss))
1255 return -1;
1256
1257 if (full_config && bss->ieee802_1x && !bss->eap_server &&
1258 !bss->radius->auth_servers) {
1259 wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no "
1260 "EAP authenticator configured).");
1261 return -1;
1262 }
1263
1264 #ifdef CONFIG_WEP
1265 if (bss->wpa) {
1266 int wep, i;
1267
1268 wep = bss->default_wep_key_len > 0 ||
1269 bss->individual_wep_key_len > 0;
1270 for (i = 0; i < NUM_WEP_KEYS; i++) {
1271 if (bss->ssid.wep.keys_set) {
1272 wep = 1;
1273 break;
1274 }
1275 }
1276
1277 if (wep) {
1278 wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported");
1279 return -1;
1280 }
1281 }
1282 #endif /* CONFIG_WEP */
1283
1284 if (full_config && bss->wpa &&
1285 bss->wpa_psk_radius != PSK_RADIUS_IGNORED &&
1286 bss->wpa_psk_radius != PSK_RADIUS_DURING_4WAY_HS &&
1287 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) {
1288 wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no "
1289 "RADIUS checking (macaddr_acl=2) enabled.");
1290 return -1;
1291 }
1292
1293 if (full_config && bss->wpa &&
1294 wpa_key_mgmt_wpa_psk_no_sae(bss->wpa_key_mgmt) &&
1295 bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL &&
1296 bss->ssid.wpa_psk_file == NULL &&
1297 bss->wpa_psk_radius != PSK_RADIUS_DURING_4WAY_HS &&
1298 (bss->wpa_psk_radius != PSK_RADIUS_REQUIRED ||
1299 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) {
1300 wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase "
1301 "is not configured.");
1302 return -1;
1303 }
1304
1305 if (full_config && !is_zero_ether_addr(bss->bssid)) {
1306 size_t i;
1307
1308 for (i = 0; i < conf->num_bss; i++) {
1309 if (conf->bss[i] != bss &&
1310 (hostapd_mac_comp(conf->bss[i]->bssid,
1311 bss->bssid) == 0)) {
1312 wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR
1313 " on interface '%s' and '%s'.",
1314 MAC2STR(bss->bssid),
1315 conf->bss[i]->iface, bss->iface);
1316 return -1;
1317 }
1318 }
1319 }
1320
1321 #ifdef CONFIG_IEEE80211R_AP
1322 if (full_config && wpa_key_mgmt_ft(bss->wpa_key_mgmt) &&
1323 (bss->nas_identifier == NULL ||
1324 os_strlen(bss->nas_identifier) < 1 ||
1325 os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) {
1326 wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires "
1327 "nas_identifier to be configured as a 1..48 octet "
1328 "string");
1329 return -1;
1330 }
1331 #endif /* CONFIG_IEEE80211R_AP */
1332
1333 if (full_config && conf->ieee80211n &&
1334 conf->hw_mode == HOSTAPD_MODE_IEEE80211B) {
1335 bss->disable_11n = true;
1336 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not "
1337 "allowed, disabling HT capabilities");
1338 }
1339
1340 #ifdef CONFIG_WEP
1341 if (full_config && conf->ieee80211n &&
1342 bss->ssid.security_policy == SECURITY_STATIC_WEP) {
1343 bss->disable_11n = true;
1344 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not "
1345 "allowed, disabling HT capabilities");
1346 }
1347 #endif /* CONFIG_WEP */
1348
1349 if (full_config && conf->ieee80211n && bss->wpa &&
1350 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
1351 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1352 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
1353 {
1354 bss->disable_11n = true;
1355 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 "
1356 "requires CCMP/GCMP to be enabled, disabling HT "
1357 "capabilities");
1358 }
1359
1360 #ifdef CONFIG_IEEE80211AC
1361 #ifdef CONFIG_WEP
1362 if (full_config && conf->ieee80211ac &&
1363 bss->ssid.security_policy == SECURITY_STATIC_WEP) {
1364 bss->disable_11ac = true;
1365 wpa_printf(MSG_ERROR,
1366 "VHT (IEEE 802.11ac) with WEP is not allowed, disabling VHT capabilities");
1367 }
1368 #endif /* CONFIG_WEP */
1369
1370 if (full_config && conf->ieee80211ac && bss->wpa &&
1371 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
1372 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1373 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
1374 {
1375 bss->disable_11ac = true;
1376 wpa_printf(MSG_ERROR,
1377 "VHT (IEEE 802.11ac) with WPA/WPA2 requires CCMP/GCMP to be enabled, disabling VHT capabilities");
1378 }
1379 #endif /* CONFIG_IEEE80211AC */
1380
1381 #ifdef CONFIG_IEEE80211AX
1382 #ifdef CONFIG_WEP
1383 if (full_config && conf->ieee80211ax &&
1384 bss->ssid.security_policy == SECURITY_STATIC_WEP) {
1385 bss->disable_11ax = true;
1386 wpa_printf(MSG_ERROR,
1387 "HE (IEEE 802.11ax) with WEP is not allowed, disabling HE capabilities");
1388 }
1389 #endif /* CONFIG_WEP */
1390
1391 if (full_config && conf->ieee80211ax && bss->wpa &&
1392 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
1393 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1394 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
1395 {
1396 bss->disable_11ax = true;
1397 wpa_printf(MSG_ERROR,
1398 "HE (IEEE 802.11ax) with WPA/WPA2 requires CCMP/GCMP to be enabled, disabling HE capabilities");
1399 }
1400 #endif /* CONFIG_IEEE80211AX */
1401
1402 #ifdef CONFIG_WPS
1403 if (full_config && bss->wps_state && bss->ignore_broadcast_ssid) {
1404 wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid "
1405 "configuration forced WPS to be disabled");
1406 bss->wps_state = 0;
1407 }
1408
1409 #ifdef CONFIG_WEP
1410 if (full_config && bss->wps_state &&
1411 bss->ssid.wep.keys_set && bss->wpa == 0) {
1412 wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be "
1413 "disabled");
1414 bss->wps_state = 0;
1415 }
1416 #endif /* CONFIG_WEP */
1417
1418 if (full_config && bss->wps_state && bss->wpa &&
1419 (!(bss->wpa & 2) ||
1420 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1421 WPA_CIPHER_CCMP_256 |
1422 WPA_CIPHER_GCMP_256)))) {
1423 wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without "
1424 "WPA2/CCMP/GCMP forced WPS to be disabled");
1425 bss->wps_state = 0;
1426 }
1427 #endif /* CONFIG_WPS */
1428
1429 #ifdef CONFIG_HS20
1430 if (full_config && bss->hs20 &&
1431 (!(bss->wpa & 2) ||
1432 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1433 WPA_CIPHER_CCMP_256 |
1434 WPA_CIPHER_GCMP_256)))) {
1435 wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP "
1436 "configuration is required for Hotspot 2.0 "
1437 "functionality");
1438 return -1;
1439 }
1440 #endif /* CONFIG_HS20 */
1441
1442 #ifdef CONFIG_MBO
1443 if (full_config && bss->mbo_enabled && (bss->wpa & 2) &&
1444 bss->ieee80211w == NO_MGMT_FRAME_PROTECTION) {
1445 wpa_printf(MSG_ERROR,
1446 "MBO: PMF needs to be enabled whenever using WPA2 with MBO");
1447 return -1;
1448 }
1449 #endif /* CONFIG_MBO */
1450
1451 #ifdef CONFIG_OCV
1452 if (full_config && bss->ieee80211w == NO_MGMT_FRAME_PROTECTION &&
1453 bss->ocv) {
1454 wpa_printf(MSG_ERROR,
1455 "OCV: PMF needs to be enabled whenever using OCV");
1456 return -1;
1457 }
1458 #endif /* CONFIG_OCV */
1459
1460 #ifdef CONFIG_SAE_PK
1461 if (full_config && hostapd_sae_pk_in_use(bss) &&
1462 hostapd_sae_pk_password_without_pk(bss)) {
1463 wpa_printf(MSG_ERROR,
1464 "SAE-PK: SAE password uses SAE-PK style, but does not have PK configured");
1465 return -1;
1466 }
1467 #endif /* CONFIG_SAE_PK */
1468
1469 #ifdef CONFIG_FILS
1470 if (full_config && bss->fils_discovery_max_int &&
1471 (!conf->ieee80211ax || bss->disable_11ax)) {
1472 wpa_printf(MSG_ERROR,
1473 "Currently IEEE 802.11ax support is mandatory to enable FILS discovery transmission.");
1474 return -1;
1475 }
1476
1477 if (full_config && bss->fils_discovery_max_int &&
1478 bss->unsol_bcast_probe_resp_interval) {
1479 wpa_printf(MSG_ERROR,
1480 "Cannot enable both FILS discovery and unsolicited broadcast Probe Response at the same time");
1481 return -1;
1482 }
1483 #endif /* CONFIG_FILS */
1484
1485 #ifdef CONFIG_IEEE80211BE
1486 if (full_config && !bss->disable_11be && bss->disable_11ax) {
1487 bss->disable_11be = true;
1488 wpa_printf(MSG_INFO,
1489 "Disabling IEEE 802.11be as IEEE 802.11ax is disabled for this BSS");
1490 }
1491
1492 if (full_config && conf->ieee80211be && !bss->disable_11be &&
1493 !bss->beacon_prot && ap_pmf_enabled(bss)) {
1494 bss->beacon_prot = 1;
1495 wpa_printf(MSG_INFO,
1496 "Enabling beacon protection as IEEE 802.11be is enabled for this BSS");
1497 }
1498 #endif /* CONFIG_IEEE80211BE */
1499
1500 if (full_config && bss->ignore_broadcast_ssid && conf->mbssid) {
1501 wpa_printf(MSG_ERROR,
1502 "Hidden SSID is not suppored when MBSSID is enabled");
1503 return -1;
1504 }
1505
1506 /* Do not advertise SPP A-MSDU support if not using CCMP/GCMP */
1507 if (full_config && bss->spp_amsdu &&
1508 !(bss->wpa &&
1509 bss->rsn_pairwise & (WPA_CIPHER_CCMP_256 | WPA_CIPHER_CCMP |
1510 WPA_CIPHER_GCMP_256 | WPA_CIPHER_GCMP)))
1511 bss->spp_amsdu = false;
1512
1513 return 0;
1514 }
1515
1516
hostapd_config_check_cw(struct hostapd_config * conf,int queue)1517 static int hostapd_config_check_cw(struct hostapd_config *conf, int queue)
1518 {
1519 int tx_cwmin = conf->tx_queue[queue].cwmin;
1520 int tx_cwmax = conf->tx_queue[queue].cwmax;
1521 int ac_cwmin = conf->wmm_ac_params[queue].cwmin;
1522 int ac_cwmax = conf->wmm_ac_params[queue].cwmax;
1523
1524 if (tx_cwmin > tx_cwmax) {
1525 wpa_printf(MSG_ERROR,
1526 "Invalid TX queue cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)",
1527 tx_cwmin, tx_cwmax);
1528 return -1;
1529 }
1530 if (ac_cwmin > ac_cwmax) {
1531 wpa_printf(MSG_ERROR,
1532 "Invalid WMM AC cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)",
1533 ac_cwmin, ac_cwmax);
1534 return -1;
1535 }
1536 return 0;
1537 }
1538
1539
hostapd_config_check(struct hostapd_config * conf,int full_config)1540 int hostapd_config_check(struct hostapd_config *conf, int full_config)
1541 {
1542 size_t i;
1543
1544 if (full_config && is_6ghz_op_class(conf->op_class) &&
1545 !conf->hw_mode_set) {
1546 /* Use the appropriate hw_mode value automatically when the
1547 * op_class parameter has been set, but hw_mode was not. */
1548 conf->hw_mode = HOSTAPD_MODE_IEEE80211A;
1549 }
1550
1551 if (full_config && conf->ieee80211d &&
1552 (!conf->country[0] || !conf->country[1])) {
1553 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without "
1554 "setting the country_code");
1555 return -1;
1556 }
1557
1558 if (full_config && conf->ieee80211h && !conf->ieee80211d) {
1559 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without "
1560 "IEEE 802.11d enabled");
1561 return -1;
1562 }
1563
1564 if (full_config && conf->local_pwr_constraint != -1 &&
1565 !conf->ieee80211d) {
1566 wpa_printf(MSG_ERROR, "Cannot add Power Constraint element without Country element");
1567 return -1;
1568 }
1569
1570 if (full_config && conf->spectrum_mgmt_required &&
1571 conf->local_pwr_constraint == -1) {
1572 wpa_printf(MSG_ERROR, "Cannot set Spectrum Management bit without Country and Power Constraint elements");
1573 return -1;
1574 }
1575
1576 #ifdef CONFIG_AIRTIME_POLICY
1577 if (full_config && conf->airtime_mode > AIRTIME_MODE_STATIC &&
1578 !conf->airtime_update_interval) {
1579 wpa_printf(MSG_ERROR, "Airtime update interval cannot be zero");
1580 return -1;
1581 }
1582 #endif /* CONFIG_AIRTIME_POLICY */
1583 for (i = 0; i < NUM_TX_QUEUES; i++) {
1584 if (hostapd_config_check_cw(conf, i))
1585 return -1;
1586 }
1587
1588 #ifdef CONFIG_IEEE80211BE
1589 if (full_config && conf->ieee80211be && !conf->ieee80211ax) {
1590 wpa_printf(MSG_ERROR,
1591 "Cannot set ieee80211be without ieee80211ax");
1592 return -1;
1593 }
1594
1595 if (full_config)
1596 hostapd_set_and_check_bw320_offset(conf,
1597 conf->eht_bw320_offset);
1598 #endif /* CONFIG_IEEE80211BE */
1599
1600 if (full_config && conf->mbssid && !conf->ieee80211ax) {
1601 wpa_printf(MSG_ERROR,
1602 "Cannot enable multiple BSSID support without ieee80211ax");
1603 return -1;
1604 }
1605
1606 for (i = 0; i < conf->num_bss; i++) {
1607 if (hostapd_config_check_bss(conf->bss[i], conf, full_config))
1608 return -1;
1609 }
1610
1611 return 0;
1612 }
1613
1614
hostapd_set_security_params(struct hostapd_bss_config * bss,int full_config)1615 void hostapd_set_security_params(struct hostapd_bss_config *bss,
1616 int full_config)
1617 {
1618 #ifdef CONFIG_WEP
1619 if (bss->individual_wep_key_len == 0) {
1620 /* individual keys are not use; can use key idx0 for
1621 * broadcast keys */
1622 bss->broadcast_key_idx_min = 0;
1623 }
1624 #endif /* CONFIG_WEP */
1625
1626 if ((bss->wpa & 2) && bss->rsn_pairwise == 0)
1627 bss->rsn_pairwise = bss->wpa_pairwise;
1628 if (bss->group_cipher)
1629 bss->wpa_group = bss->group_cipher;
1630 else
1631 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa,
1632 bss->wpa_pairwise,
1633 bss->rsn_pairwise);
1634 if (!bss->wpa_group_rekey_set)
1635 bss->wpa_group_rekey = bss->wpa_group == WPA_CIPHER_TKIP ?
1636 600 : 86400;
1637
1638 if (full_config) {
1639 bss->radius->auth_server = bss->radius->auth_servers;
1640 bss->radius->acct_server = bss->radius->acct_servers;
1641 }
1642
1643 if (bss->wpa && bss->ieee802_1x) {
1644 bss->ssid.security_policy = SECURITY_WPA;
1645 } else if (bss->wpa) {
1646 bss->ssid.security_policy = SECURITY_WPA_PSK;
1647 } else if (bss->ieee802_1x) {
1648 int cipher = WPA_CIPHER_NONE;
1649 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
1650 #ifdef CONFIG_WEP
1651 bss->ssid.wep.default_len = bss->default_wep_key_len;
1652 if (full_config && bss->default_wep_key_len) {
1653 cipher = bss->default_wep_key_len >= 13 ?
1654 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40;
1655 } else if (full_config && bss->ssid.wep.keys_set) {
1656 if (bss->ssid.wep.len[0] >= 13)
1657 cipher = WPA_CIPHER_WEP104;
1658 else
1659 cipher = WPA_CIPHER_WEP40;
1660 }
1661 #endif /* CONFIG_WEP */
1662 bss->wpa_group = cipher;
1663 bss->wpa_pairwise = cipher;
1664 bss->rsn_pairwise = cipher;
1665 if (full_config)
1666 bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
1667 #ifdef CONFIG_WEP
1668 } else if (bss->ssid.wep.keys_set) {
1669 int cipher = WPA_CIPHER_WEP40;
1670 if (bss->ssid.wep.len[0] >= 13)
1671 cipher = WPA_CIPHER_WEP104;
1672 bss->ssid.security_policy = SECURITY_STATIC_WEP;
1673 bss->wpa_group = cipher;
1674 bss->wpa_pairwise = cipher;
1675 bss->rsn_pairwise = cipher;
1676 if (full_config)
1677 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE;
1678 #endif /* CONFIG_WEP */
1679 } else {
1680 bss->ssid.security_policy = SECURITY_PLAINTEXT;
1681 if (full_config) {
1682 bss->wpa_group = WPA_CIPHER_NONE;
1683 bss->wpa_pairwise = WPA_CIPHER_NONE;
1684 bss->rsn_pairwise = WPA_CIPHER_NONE;
1685 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE;
1686 }
1687 }
1688 }
1689
1690
hostapd_sae_pw_id_in_use(struct hostapd_bss_config * conf)1691 int hostapd_sae_pw_id_in_use(struct hostapd_bss_config *conf)
1692 {
1693 int with_id = 0, without_id = 0;
1694 struct sae_password_entry *pw;
1695
1696 if (conf->ssid.wpa_passphrase)
1697 without_id = 1;
1698
1699 for (pw = conf->sae_passwords; pw; pw = pw->next) {
1700 if (pw->identifier)
1701 with_id = 1;
1702 else
1703 without_id = 1;
1704 if (with_id && without_id)
1705 break;
1706 }
1707
1708 if (with_id && !without_id)
1709 return 2;
1710 return with_id;
1711 }
1712
1713
hostapd_sae_pk_in_use(struct hostapd_bss_config * conf)1714 bool hostapd_sae_pk_in_use(struct hostapd_bss_config *conf)
1715 {
1716 #ifdef CONFIG_SAE_PK
1717 struct sae_password_entry *pw;
1718
1719 for (pw = conf->sae_passwords; pw; pw = pw->next) {
1720 if (pw->pk)
1721 return true;
1722 }
1723 #endif /* CONFIG_SAE_PK */
1724
1725 return false;
1726 }
1727
1728
1729 #ifdef CONFIG_SAE_PK
hostapd_sae_pk_exclusively(struct hostapd_bss_config * conf)1730 bool hostapd_sae_pk_exclusively(struct hostapd_bss_config *conf)
1731 {
1732 bool with_pk = false;
1733 struct sae_password_entry *pw;
1734
1735 if (conf->ssid.wpa_passphrase)
1736 return false;
1737
1738 for (pw = conf->sae_passwords; pw; pw = pw->next) {
1739 if (!pw->pk)
1740 return false;
1741 with_pk = true;
1742 }
1743
1744 return with_pk;
1745 }
1746 #endif /* CONFIG_SAE_PK */
1747
1748
hostapd_acl_comp(const void * a,const void * b)1749 int hostapd_acl_comp(const void *a, const void *b)
1750 {
1751 const struct mac_acl_entry *aa = a;
1752 const struct mac_acl_entry *bb = b;
1753 return os_memcmp(aa->addr, bb->addr, sizeof(macaddr));
1754 }
1755
1756
hostapd_add_acl_maclist(struct mac_acl_entry ** acl,int * num,int vlan_id,const u8 * addr)1757 int hostapd_add_acl_maclist(struct mac_acl_entry **acl, int *num,
1758 int vlan_id, const u8 *addr)
1759 {
1760 struct mac_acl_entry *newacl;
1761
1762 newacl = os_realloc_array(*acl, *num + 1, sizeof(**acl));
1763 if (!newacl) {
1764 wpa_printf(MSG_ERROR, "MAC list reallocation failed");
1765 return -1;
1766 }
1767
1768 *acl = newacl;
1769 os_memcpy((*acl)[*num].addr, addr, ETH_ALEN);
1770 os_memset(&(*acl)[*num].vlan_id, 0, sizeof((*acl)[*num].vlan_id));
1771 (*acl)[*num].vlan_id.untagged = vlan_id;
1772 (*acl)[*num].vlan_id.notempty = !!vlan_id;
1773 (*num)++;
1774
1775 return 0;
1776 }
1777
1778
hostapd_remove_acl_mac(struct mac_acl_entry ** acl,int * num,const u8 * addr)1779 void hostapd_remove_acl_mac(struct mac_acl_entry **acl, int *num,
1780 const u8 *addr)
1781 {
1782 int i = 0;
1783
1784 while (i < *num) {
1785 if (ether_addr_equal((*acl)[i].addr, addr)) {
1786 os_remove_in_array(*acl, *num, sizeof(**acl), i);
1787 (*num)--;
1788 } else {
1789 i++;
1790 }
1791 }
1792 }
1793