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 conf->skip_send_eapol = 0;
269 conf->enable_eapol_large_timeout = 0;
270 #endif /* CONFIG_TESTING_OPTIONS */
271
272 conf->acs = 0;
273 conf->acs_ch_list.num = 0;
274 #ifdef CONFIG_ACS
275 conf->acs_num_scans = 5;
276 #endif /* CONFIG_ACS */
277
278 #ifdef CONFIG_IEEE80211AX
279 conf->he_op.he_rts_threshold = HE_OPERATION_RTS_THRESHOLD_MASK >>
280 HE_OPERATION_RTS_THRESHOLD_OFFSET;
281 /* Set default basic MCS/NSS set to single stream MCS 0-7 */
282 conf->he_op.he_basic_mcs_nss_set = 0xfffc;
283 conf->he_op.he_bss_color_disabled = 1;
284 conf->he_op.he_bss_color_partial = 0;
285 conf->he_op.he_bss_color = os_random() % 63 + 1;
286 conf->he_op.he_twt_responder = 1;
287 conf->he_6ghz_max_mpdu = 2;
288 conf->he_6ghz_max_ampdu_len_exp = 7;
289 conf->he_6ghz_rx_ant_pat = 1;
290 conf->he_6ghz_tx_ant_pat = 1;
291 conf->he_6ghz_reg_pwr_type = HE_REG_INFO_6GHZ_AP_TYPE_VLP;
292 conf->reg_def_cli_eirp_psd = -1;
293 conf->reg_sub_cli_eirp_psd = -1;
294 conf->reg_def_cli_eirp = -1;
295 #endif /* CONFIG_IEEE80211AX */
296
297 /* The third octet of the country string uses an ASCII space character
298 * by default to indicate that the regulations encompass all
299 * environments for the current frequency band in the country. */
300 conf->country[2] = ' ';
301
302 conf->rssi_reject_assoc_rssi = 0;
303 conf->rssi_reject_assoc_timeout = 30;
304
305 #ifdef CONFIG_AIRTIME_POLICY
306 conf->airtime_update_interval = AIRTIME_DEFAULT_UPDATE_INTERVAL;
307 #endif /* CONFIG_AIRTIME_POLICY */
308
309 hostapd_set_and_check_bw320_offset(conf, 0);
310
311 return conf;
312 }
313
314
hostapd_mac_comp(const void * a,const void * b)315 int hostapd_mac_comp(const void *a, const void *b)
316 {
317 return os_memcmp(a, b, sizeof(macaddr));
318 }
319
320
hostapd_config_read_wpa_psk(const char * fname,struct hostapd_ssid * ssid)321 static int hostapd_config_read_wpa_psk(const char *fname,
322 struct hostapd_ssid *ssid)
323 {
324 FILE *f;
325 char buf[128], *pos;
326 const char *keyid;
327 char *context;
328 char *context2;
329 char *token;
330 char *name;
331 char *value;
332 int line = 0, ret = 0, len, ok;
333 u8 addr[ETH_ALEN];
334 struct hostapd_wpa_psk *psk;
335
336 if (!fname)
337 return 0;
338
339 f = fopen(fname, "r");
340 if (!f) {
341 wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname);
342 return -1;
343 }
344
345 while (fgets(buf, sizeof(buf), f)) {
346 int vlan_id = 0;
347 int wps = 0;
348
349 line++;
350
351 if (buf[0] == '#')
352 continue;
353 pos = buf;
354 while (*pos != '\0') {
355 if (*pos == '\n') {
356 *pos = '\0';
357 break;
358 }
359 pos++;
360 }
361 if (buf[0] == '\0')
362 continue;
363
364 context = NULL;
365 keyid = NULL;
366 while ((token = str_token(buf, " ", &context))) {
367 if (!os_strchr(token, '='))
368 break;
369 context2 = NULL;
370 name = str_token(token, "=", &context2);
371 if (!name)
372 break;
373 value = str_token(token, "", &context2);
374 if (!value)
375 value = "";
376 if (!os_strcmp(name, "keyid")) {
377 keyid = value;
378 } else if (!os_strcmp(name, "wps")) {
379 wps = atoi(value);
380 } else if (!os_strcmp(name, "vlanid")) {
381 vlan_id = atoi(value);
382 } else {
383 wpa_printf(MSG_ERROR,
384 "Unrecognized '%s=%s' on line %d in '%s'",
385 name, value, line, fname);
386 ret = -1;
387 break;
388 }
389 }
390
391 if (ret == -1)
392 break;
393
394 if (!token)
395 token = "";
396 if (hwaddr_aton(token, addr)) {
397 wpa_printf(MSG_ERROR,
398 "Invalid MAC address '%s' on line %d in '%s'",
399 token, line, fname);
400 ret = -1;
401 break;
402 }
403
404 psk = os_zalloc(sizeof(*psk));
405 if (psk == NULL) {
406 wpa_printf(MSG_ERROR, "WPA PSK allocation failed");
407 ret = -1;
408 break;
409 }
410 psk->vlan_id = vlan_id;
411 if (is_zero_ether_addr(addr))
412 psk->group = 1;
413 else
414 os_memcpy(psk->addr, addr, ETH_ALEN);
415
416 pos = str_token(buf, "", &context);
417 if (!pos) {
418 wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'",
419 line, fname);
420 os_free(psk);
421 ret = -1;
422 break;
423 }
424
425 ok = 0;
426 len = os_strlen(pos);
427 if (len == 2 * PMK_LEN &&
428 hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
429 ok = 1;
430 else if (len >= 8 && len < 64 &&
431 pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len,
432 4096, psk->psk, PMK_LEN) == 0)
433 ok = 1;
434 if (!ok) {
435 wpa_printf(MSG_ERROR,
436 "Invalid PSK '%s' on line %d in '%s'",
437 pos, line, fname);
438 os_free(psk);
439 ret = -1;
440 break;
441 }
442
443 if (keyid) {
444 len = os_strlcpy(psk->keyid, keyid, sizeof(psk->keyid));
445 if ((size_t) len >= sizeof(psk->keyid)) {
446 wpa_printf(MSG_ERROR,
447 "PSK keyid too long on line %d in '%s'",
448 line, fname);
449 os_free(psk);
450 ret = -1;
451 break;
452 }
453 }
454
455 psk->wps = wps;
456
457 psk->next = ssid->wpa_psk;
458 ssid->wpa_psk = psk;
459 }
460
461 fclose(f);
462
463 return ret;
464 }
465
466
hostapd_derive_psk(struct hostapd_ssid * ssid)467 static int hostapd_derive_psk(struct hostapd_ssid *ssid)
468 {
469 ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
470 if (ssid->wpa_psk == NULL) {
471 wpa_printf(MSG_ERROR, "Unable to alloc space for PSK");
472 return -1;
473 }
474 wpa_hexdump_ascii(MSG_DEBUG, "SSID",
475 (u8 *) ssid->ssid, ssid->ssid_len);
476 wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)",
477 (u8 *) ssid->wpa_passphrase,
478 os_strlen(ssid->wpa_passphrase));
479 if (pbkdf2_sha1(ssid->wpa_passphrase,
480 ssid->ssid, ssid->ssid_len,
481 4096, ssid->wpa_psk->psk, PMK_LEN) != 0) {
482 wpa_printf(MSG_ERROR, "Error in pbkdf2_sha1()");
483 return -1;
484 }
485 wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)",
486 ssid->wpa_psk->psk, PMK_LEN);
487 return 0;
488 }
489
490
hostapd_setup_sae_pt(struct hostapd_bss_config * conf)491 int hostapd_setup_sae_pt(struct hostapd_bss_config *conf)
492 {
493 #ifdef CONFIG_SAE
494 struct hostapd_ssid *ssid = &conf->ssid;
495 struct sae_password_entry *pw;
496 int *groups = conf->sae_groups;
497 int default_groups[] = { 19, 0, 0 };
498
499 if ((conf->sae_pwe == SAE_PWE_HUNT_AND_PECK &&
500 !hostapd_sae_pw_id_in_use(conf) &&
501 !wpa_key_mgmt_sae_ext_key(conf->wpa_key_mgmt |
502 conf->rsn_override_key_mgmt |
503 conf->rsn_override_key_mgmt_2) &&
504 !hostapd_sae_pk_in_use(conf)) ||
505 conf->sae_pwe == SAE_PWE_FORCE_HUNT_AND_PECK ||
506 !wpa_key_mgmt_sae(conf->wpa_key_mgmt |
507 conf->rsn_override_key_mgmt |
508 conf->rsn_override_key_mgmt_2))
509 return 0; /* PT not needed */
510
511 if (!groups) {
512 groups = default_groups;
513 if (wpa_key_mgmt_sae_ext_key(conf->wpa_key_mgmt |
514 conf->rsn_override_key_mgmt |
515 conf->rsn_override_key_mgmt_2))
516 default_groups[1] = 20;
517 }
518
519 sae_deinit_pt(ssid->pt);
520 ssid->pt = NULL;
521 if (ssid->wpa_passphrase) {
522 ssid->pt = sae_derive_pt(groups, ssid->ssid, ssid->ssid_len,
523 (const u8 *) ssid->wpa_passphrase,
524 os_strlen(ssid->wpa_passphrase),
525 NULL);
526 if (!ssid->pt)
527 return -1;
528 }
529
530 for (pw = conf->sae_passwords; pw; pw = pw->next) {
531 sae_deinit_pt(pw->pt);
532 pw->pt = sae_derive_pt(groups, ssid->ssid, ssid->ssid_len,
533 (const u8 *) pw->password,
534 os_strlen(pw->password),
535 pw->identifier);
536 if (!pw->pt)
537 return -1;
538 }
539 #endif /* CONFIG_SAE */
540
541 return 0;
542 }
543
544
hostapd_setup_wpa_psk(struct hostapd_bss_config * conf)545 int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
546 {
547 struct hostapd_ssid *ssid = &conf->ssid;
548
549 if (hostapd_setup_sae_pt(conf) < 0)
550 return -1;
551
552 if (ssid->wpa_passphrase != NULL) {
553 if (ssid->wpa_psk != NULL) {
554 wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK "
555 "instead of passphrase");
556 } else {
557 wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on "
558 "passphrase");
559 if (hostapd_derive_psk(ssid) < 0)
560 return -1;
561 }
562 ssid->wpa_psk->group = 1;
563 }
564
565 return hostapd_config_read_wpa_psk(ssid->wpa_psk_file, &conf->ssid);
566 }
567
568
hostapd_config_free_radius(struct hostapd_radius_server * servers,int num_servers)569 static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
570 int num_servers)
571 {
572 int i;
573
574 for (i = 0; i < num_servers; i++) {
575 os_free(servers[i].shared_secret);
576 os_free(servers[i].ca_cert);
577 os_free(servers[i].client_cert);
578 os_free(servers[i].private_key);
579 os_free(servers[i].private_key_passwd);
580 }
581 os_free(servers);
582 }
583
584
585 struct hostapd_radius_attr *
hostapd_config_get_radius_attr(struct hostapd_radius_attr * attr,u8 type)586 hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type)
587 {
588 for (; attr; attr = attr->next) {
589 if (attr->type == type)
590 return attr;
591 }
592 return NULL;
593 }
594
595
hostapd_parse_radius_attr(const char * value)596 struct hostapd_radius_attr * hostapd_parse_radius_attr(const char *value)
597 {
598 const char *pos;
599 char syntax;
600 struct hostapd_radius_attr *attr;
601 size_t len;
602
603 attr = os_zalloc(sizeof(*attr));
604 if (!attr)
605 return NULL;
606
607 attr->type = atoi(value);
608
609 pos = os_strchr(value, ':');
610 if (!pos) {
611 attr->val = wpabuf_alloc(1);
612 if (!attr->val) {
613 os_free(attr);
614 return NULL;
615 }
616 wpabuf_put_u8(attr->val, 0);
617 return attr;
618 }
619
620 pos++;
621 if (pos[0] == '\0' || pos[1] != ':') {
622 os_free(attr);
623 return NULL;
624 }
625 syntax = *pos++;
626 pos++;
627
628 switch (syntax) {
629 case 's':
630 attr->val = wpabuf_alloc_copy(pos, os_strlen(pos));
631 break;
632 case 'x':
633 len = os_strlen(pos);
634 if (len & 1)
635 break;
636 len /= 2;
637 attr->val = wpabuf_alloc(len);
638 if (!attr->val)
639 break;
640 if (hexstr2bin(pos, wpabuf_put(attr->val, len), len) < 0) {
641 wpabuf_free(attr->val);
642 os_free(attr);
643 return NULL;
644 }
645 break;
646 case 'd':
647 attr->val = wpabuf_alloc(4);
648 if (attr->val)
649 wpabuf_put_be32(attr->val, atoi(pos));
650 break;
651 default:
652 os_free(attr);
653 return NULL;
654 }
655
656 if (!attr->val) {
657 os_free(attr);
658 return NULL;
659 }
660
661 return attr;
662 }
663
664
hostapd_config_free_radius_attr(struct hostapd_radius_attr * attr)665 void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr)
666 {
667 struct hostapd_radius_attr *prev;
668
669 while (attr) {
670 prev = attr;
671 attr = attr->next;
672 wpabuf_free(prev->val);
673 os_free(prev);
674 }
675 }
676
677
hostapd_config_free_eap_user(struct hostapd_eap_user * user)678 void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
679 {
680 hostapd_config_free_radius_attr(user->accept_attr);
681 os_free(user->identity);
682 bin_clear_free(user->password, user->password_len);
683 bin_clear_free(user->salt, user->salt_len);
684 os_free(user);
685 }
686
687
hostapd_config_free_eap_users(struct hostapd_eap_user * user)688 void hostapd_config_free_eap_users(struct hostapd_eap_user *user)
689 {
690 struct hostapd_eap_user *prev_user;
691
692 while (user) {
693 prev_user = user;
694 user = user->next;
695 hostapd_config_free_eap_user(prev_user);
696 }
697 }
698
699
700 #ifdef CONFIG_WEP
hostapd_config_free_wep(struct hostapd_wep_keys * keys)701 static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
702 {
703 int i;
704 for (i = 0; i < NUM_WEP_KEYS; i++) {
705 bin_clear_free(keys->key[i], keys->len[i]);
706 keys->key[i] = NULL;
707 }
708 }
709 #endif /* CONFIG_WEP */
710
711
hostapd_config_clear_wpa_psk(struct hostapd_wpa_psk ** l)712 void hostapd_config_clear_wpa_psk(struct hostapd_wpa_psk **l)
713 {
714 struct hostapd_wpa_psk *psk, *tmp;
715
716 for (psk = *l; psk;) {
717 tmp = psk;
718 psk = psk->next;
719 bin_clear_free(tmp, sizeof(*tmp));
720 }
721 *l = NULL;
722 }
723
724
725 #ifdef CONFIG_IEEE80211R_AP
726
hostapd_config_clear_rxkhs(struct hostapd_bss_config * conf)727 void hostapd_config_clear_rxkhs(struct hostapd_bss_config *conf)
728 {
729 struct ft_remote_r0kh *r0kh, *r0kh_prev;
730 struct ft_remote_r1kh *r1kh, *r1kh_prev;
731
732 r0kh = conf->r0kh_list;
733 conf->r0kh_list = NULL;
734 while (r0kh) {
735 r0kh_prev = r0kh;
736 r0kh = r0kh->next;
737 os_free(r0kh_prev);
738 }
739
740 r1kh = conf->r1kh_list;
741 conf->r1kh_list = NULL;
742 while (r1kh) {
743 r1kh_prev = r1kh;
744 r1kh = r1kh->next;
745 os_free(r1kh_prev);
746 }
747 }
748
749 #endif /* CONFIG_IEEE80211R_AP */
750
751
hostapd_config_free_anqp_elem(struct hostapd_bss_config * conf)752 static void hostapd_config_free_anqp_elem(struct hostapd_bss_config *conf)
753 {
754 struct anqp_element *elem;
755
756 while ((elem = dl_list_first(&conf->anqp_elem, struct anqp_element,
757 list))) {
758 dl_list_del(&elem->list);
759 wpabuf_free(elem->payload);
760 os_free(elem);
761 }
762 }
763
764
hostapd_config_free_fils_realms(struct hostapd_bss_config * conf)765 static void hostapd_config_free_fils_realms(struct hostapd_bss_config *conf)
766 {
767 #ifdef CONFIG_FILS
768 struct fils_realm *realm;
769
770 while ((realm = dl_list_first(&conf->fils_realms, struct fils_realm,
771 list))) {
772 dl_list_del(&realm->list);
773 os_free(realm);
774 }
775 #endif /* CONFIG_FILS */
776 }
777
778
hostapd_config_free_sae_passwords(struct hostapd_bss_config * conf)779 static void hostapd_config_free_sae_passwords(struct hostapd_bss_config *conf)
780 {
781 struct sae_password_entry *pw, *tmp;
782
783 pw = conf->sae_passwords;
784 conf->sae_passwords = NULL;
785 while (pw) {
786 tmp = pw;
787 pw = pw->next;
788 str_clear_free(tmp->password);
789 os_free(tmp->identifier);
790 #ifdef CONFIG_SAE
791 sae_deinit_pt(tmp->pt);
792 #endif /* CONFIG_SAE */
793 #ifdef CONFIG_SAE_PK
794 sae_deinit_pk(tmp->pk);
795 #endif /* CONFIG_SAE_PK */
796 os_free(tmp->success_mac);
797 os_free(tmp->fail_mac);
798 os_free(tmp);
799 }
800 }
801
802
803 #ifdef CONFIG_DPP2
hostapd_dpp_controller_conf_free(struct dpp_controller_conf * conf)804 static void hostapd_dpp_controller_conf_free(struct dpp_controller_conf *conf)
805 {
806 struct dpp_controller_conf *prev;
807
808 while (conf) {
809 prev = conf;
810 conf = conf->next;
811 os_free(prev);
812 }
813 }
814 #endif /* CONFIG_DPP2 */
815
816
hostapd_config_free_bss(struct hostapd_bss_config * conf)817 void hostapd_config_free_bss(struct hostapd_bss_config *conf)
818 {
819 #if defined(CONFIG_WPS) || defined(CONFIG_HS20)
820 size_t i;
821 #endif
822
823 if (conf == NULL)
824 return;
825
826 hostapd_config_clear_wpa_psk(&conf->ssid.wpa_psk);
827
828 str_clear_free(conf->ssid.wpa_passphrase);
829 os_free(conf->ssid.wpa_psk_file);
830 #ifdef CONFIG_WEP
831 hostapd_config_free_wep(&conf->ssid.wep);
832 #endif /* CONFIG_WEP */
833 #ifdef CONFIG_FULL_DYNAMIC_VLAN
834 os_free(conf->ssid.vlan_tagged_interface);
835 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
836 #ifdef CONFIG_SAE
837 sae_deinit_pt(conf->ssid.pt);
838 #endif /* CONFIG_SAE */
839
840 hostapd_config_free_eap_users(conf->eap_user);
841 os_free(conf->eap_user_sqlite);
842
843 os_free(conf->eap_req_id_text);
844 os_free(conf->erp_domain);
845 os_free(conf->accept_mac);
846 os_free(conf->deny_mac);
847 os_free(conf->nas_identifier);
848 if (conf->radius) {
849 hostapd_config_free_radius(conf->radius->auth_servers,
850 conf->radius->num_auth_servers);
851 hostapd_config_free_radius(conf->radius->acct_servers,
852 conf->radius->num_acct_servers);
853 os_free(conf->radius->force_client_dev);
854 }
855 hostapd_config_free_radius_attr(conf->radius_auth_req_attr);
856 hostapd_config_free_radius_attr(conf->radius_acct_req_attr);
857 os_free(conf->radius_req_attr_sqlite);
858 os_free(conf->rsn_preauth_interfaces);
859 os_free(conf->ctrl_interface);
860 os_free(conf->config_id);
861 os_free(conf->ca_cert);
862 os_free(conf->server_cert);
863 os_free(conf->server_cert2);
864 os_free(conf->private_key);
865 os_free(conf->private_key2);
866 os_free(conf->private_key_passwd);
867 os_free(conf->private_key_passwd2);
868 os_free(conf->check_cert_subject);
869 os_free(conf->ocsp_stapling_response);
870 os_free(conf->ocsp_stapling_response_multi);
871 os_free(conf->dh_file);
872 os_free(conf->openssl_ciphers);
873 os_free(conf->openssl_ecdh_curves);
874 os_free(conf->pac_opaque_encr_key);
875 os_free(conf->eap_fast_a_id);
876 os_free(conf->eap_fast_a_id_info);
877 os_free(conf->eap_sim_db);
878 os_free(conf->imsi_privacy_key);
879 os_free(conf->radius_server_clients);
880 os_free(conf->radius);
881 os_free(conf->radius_das_shared_secret);
882 hostapd_config_free_vlan(conf);
883 os_free(conf->time_zone);
884
885 #ifdef CONFIG_IEEE80211R_AP
886 hostapd_config_clear_rxkhs(conf);
887 os_free(conf->rxkh_file);
888 conf->rxkh_file = NULL;
889 #endif /* CONFIG_IEEE80211R_AP */
890
891 #ifdef CONFIG_WPS
892 os_free(conf->wps_pin_requests);
893 os_free(conf->device_name);
894 os_free(conf->manufacturer);
895 os_free(conf->model_name);
896 os_free(conf->model_number);
897 os_free(conf->serial_number);
898 os_free(conf->config_methods);
899 os_free(conf->ap_pin);
900 os_free(conf->extra_cred);
901 os_free(conf->ap_settings);
902 hostapd_config_clear_wpa_psk(&conf->multi_ap_backhaul_ssid.wpa_psk);
903 str_clear_free(conf->multi_ap_backhaul_ssid.wpa_passphrase);
904 os_free(conf->upnp_iface);
905 os_free(conf->friendly_name);
906 os_free(conf->manufacturer_url);
907 os_free(conf->model_description);
908 os_free(conf->model_url);
909 os_free(conf->upc);
910 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++)
911 wpabuf_free(conf->wps_vendor_ext[i]);
912 wpabuf_free(conf->wps_application_ext);
913 wpabuf_free(conf->wps_nfc_dh_pubkey);
914 wpabuf_free(conf->wps_nfc_dh_privkey);
915 wpabuf_free(conf->wps_nfc_dev_pw);
916 #endif /* CONFIG_WPS */
917
918 os_free(conf->roaming_consortium);
919 os_free(conf->venue_name);
920 os_free(conf->venue_url);
921 os_free(conf->nai_realm_data);
922 os_free(conf->network_auth_type);
923 os_free(conf->anqp_3gpp_cell_net);
924 os_free(conf->domain_name);
925 hostapd_config_free_anqp_elem(conf);
926
927 #ifdef CONFIG_RADIUS_TEST
928 os_free(conf->dump_msk_file);
929 #endif /* CONFIG_RADIUS_TEST */
930
931 #ifdef CONFIG_HS20
932 os_free(conf->hs20_oper_friendly_name);
933 os_free(conf->hs20_wan_metrics);
934 os_free(conf->hs20_connection_capability);
935 os_free(conf->hs20_operating_class);
936 os_free(conf->t_c_filename);
937 os_free(conf->t_c_server_url);
938 #endif /* CONFIG_HS20 */
939
940 wpabuf_free(conf->vendor_elements);
941 wpabuf_free(conf->assocresp_elements);
942
943 os_free(conf->sae_groups);
944 #ifdef CONFIG_OWE
945 os_free(conf->owe_groups);
946 #endif /* CONFIG_OWE */
947
948 os_free(conf->wowlan_triggers);
949
950 os_free(conf->server_id);
951
952 #ifdef CONFIG_TESTING_OPTIONS
953 wpabuf_free(conf->own_ie_override);
954 wpabuf_free(conf->rsne_override);
955 wpabuf_free(conf->rsnoe_override);
956 wpabuf_free(conf->rsno2e_override);
957 wpabuf_free(conf->rsnxe_override);
958 wpabuf_free(conf->rsnxoe_override);
959 wpabuf_free(conf->sae_commit_override);
960 wpabuf_free(conf->rsne_override_eapol);
961 wpabuf_free(conf->rsnxe_override_eapol);
962 wpabuf_free(conf->rsne_override_ft);
963 wpabuf_free(conf->rsnxe_override_ft);
964 wpabuf_free(conf->gtk_rsc_override);
965 wpabuf_free(conf->igtk_rsc_override);
966 wpabuf_free(conf->eapol_m1_elements);
967 wpabuf_free(conf->eapol_m3_elements);
968 wpabuf_free(conf->presp_elements);
969 #endif /* CONFIG_TESTING_OPTIONS */
970
971 os_free(conf->no_probe_resp_if_seen_on);
972 os_free(conf->no_auth_if_seen_on);
973
974 hostapd_config_free_fils_realms(conf);
975
976 #ifdef CONFIG_DPP
977 os_free(conf->dpp_name);
978 os_free(conf->dpp_mud_url);
979 os_free(conf->dpp_extra_conf_req_name);
980 os_free(conf->dpp_extra_conf_req_value);
981 os_free(conf->dpp_connector);
982 wpabuf_free(conf->dpp_netaccesskey);
983 wpabuf_free(conf->dpp_csign);
984 #ifdef CONFIG_DPP2
985 hostapd_dpp_controller_conf_free(conf->dpp_controller);
986 #endif /* CONFIG_DPP2 */
987 #endif /* CONFIG_DPP */
988
989 hostapd_config_free_sae_passwords(conf);
990
991 #ifdef CONFIG_AIRTIME_POLICY
992 {
993 struct airtime_sta_weight *wt, *wt_prev;
994
995 wt = conf->airtime_weight_list;
996 conf->airtime_weight_list = NULL;
997 while (wt) {
998 wt_prev = wt;
999 wt = wt->next;
1000 os_free(wt_prev);
1001 }
1002 }
1003 #endif /* CONFIG_AIRTIME_POLICY */
1004
1005 #ifdef CONFIG_PASN
1006 os_free(conf->pasn_groups);
1007 #endif /* CONFIG_PASN */
1008
1009 os_free(conf);
1010 }
1011
1012
1013 /**
1014 * hostapd_config_free - Free hostapd configuration
1015 * @conf: Configuration data from hostapd_config_read().
1016 */
hostapd_config_free(struct hostapd_config * conf)1017 void hostapd_config_free(struct hostapd_config *conf)
1018 {
1019 size_t i;
1020
1021 if (conf == NULL)
1022 return;
1023
1024 for (i = 0; i < conf->num_bss; i++)
1025 hostapd_config_free_bss(conf->bss[i]);
1026 os_free(conf->bss);
1027 os_free(conf->supported_rates);
1028 os_free(conf->basic_rates);
1029 os_free(conf->acs_ch_list.range);
1030 os_free(conf->acs_freq_list.range);
1031 os_free(conf->driver_params);
1032 #ifdef CONFIG_ACS
1033 os_free(conf->acs_chan_bias);
1034 #endif /* CONFIG_ACS */
1035 wpabuf_free(conf->lci);
1036 wpabuf_free(conf->civic);
1037
1038 os_free(conf);
1039 }
1040
1041
1042 /**
1043 * hostapd_maclist_found - Find a MAC address from a list
1044 * @list: MAC address list
1045 * @num_entries: Number of addresses in the list
1046 * @addr: Address to search for
1047 * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed
1048 * Returns: 1 if address is in the list or 0 if not.
1049 *
1050 * Perform a binary search for given MAC address from a pre-sorted list.
1051 */
hostapd_maclist_found(struct mac_acl_entry * list,int num_entries,const u8 * addr,struct vlan_description * vlan_id)1052 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries,
1053 const u8 *addr, struct vlan_description *vlan_id)
1054 {
1055 int start, end, middle, res;
1056
1057 start = 0;
1058 end = num_entries - 1;
1059
1060 while (start <= end) {
1061 middle = (start + end) / 2;
1062 res = os_memcmp(list[middle].addr, addr, ETH_ALEN);
1063 if (res == 0) {
1064 if (vlan_id)
1065 *vlan_id = list[middle].vlan_id;
1066 return 1;
1067 }
1068 if (res < 0)
1069 start = middle + 1;
1070 else
1071 end = middle - 1;
1072 }
1073
1074 return 0;
1075 }
1076
1077
hostapd_rate_found(int * list,int rate)1078 int hostapd_rate_found(int *list, int rate)
1079 {
1080 int i;
1081
1082 if (list == NULL)
1083 return 0;
1084
1085 for (i = 0; list[i] >= 0; i++)
1086 if (list[i] == rate)
1087 return 1;
1088
1089 return 0;
1090 }
1091
1092
hostapd_vlan_valid(struct hostapd_vlan * vlan,struct vlan_description * vlan_desc)1093 int hostapd_vlan_valid(struct hostapd_vlan *vlan,
1094 struct vlan_description *vlan_desc)
1095 {
1096 struct hostapd_vlan *v = vlan;
1097 int i;
1098
1099 if (!vlan_desc->notempty || vlan_desc->untagged < 0 ||
1100 vlan_desc->untagged > MAX_VLAN_ID)
1101 return 0;
1102 for (i = 0; i < MAX_NUM_TAGGED_VLAN; i++) {
1103 if (vlan_desc->tagged[i] < 0 ||
1104 vlan_desc->tagged[i] > MAX_VLAN_ID)
1105 return 0;
1106 }
1107 if (!vlan_desc->untagged && !vlan_desc->tagged[0])
1108 return 0;
1109
1110 while (v) {
1111 if (!vlan_compare(&v->vlan_desc, vlan_desc) ||
1112 v->vlan_id == VLAN_ID_WILDCARD)
1113 return 1;
1114 v = v->next;
1115 }
1116 return 0;
1117 }
1118
1119
hostapd_get_vlan_id_ifname(struct hostapd_vlan * vlan,int vlan_id)1120 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id)
1121 {
1122 struct hostapd_vlan *v = vlan;
1123 while (v) {
1124 if (v->vlan_id == vlan_id)
1125 return v->ifname;
1126 v = v->next;
1127 }
1128 return NULL;
1129 }
1130
1131
hostapd_get_psk(const struct hostapd_bss_config * conf,const u8 * addr,const u8 * p2p_dev_addr,const u8 * prev_psk,int * vlan_id)1132 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
1133 const u8 *addr, const u8 *p2p_dev_addr,
1134 const u8 *prev_psk, int *vlan_id)
1135 {
1136 struct hostapd_wpa_psk *psk;
1137 int next_ok = prev_psk == NULL;
1138
1139 if (vlan_id)
1140 *vlan_id = 0;
1141
1142 if (p2p_dev_addr && !is_zero_ether_addr(p2p_dev_addr)) {
1143 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
1144 " p2p_dev_addr=" MACSTR " prev_psk=%p",
1145 MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk);
1146 addr = NULL; /* Use P2P Device Address for matching */
1147 } else {
1148 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
1149 " prev_psk=%p",
1150 MAC2STR(addr), prev_psk);
1151 }
1152
1153 for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
1154 if (next_ok &&
1155 (psk->group ||
1156 (addr && ether_addr_equal(psk->addr, addr)) ||
1157 (!addr && p2p_dev_addr &&
1158 ether_addr_equal(psk->p2p_dev_addr, p2p_dev_addr)))) {
1159 if (vlan_id)
1160 *vlan_id = psk->vlan_id;
1161 return psk->psk;
1162 }
1163
1164 if (psk->psk == prev_psk)
1165 next_ok = 1;
1166 }
1167
1168 return NULL;
1169 }
1170
1171
1172 #ifdef CONFIG_SAE_PK
hostapd_sae_pk_password_without_pk(struct hostapd_bss_config * bss)1173 static bool hostapd_sae_pk_password_without_pk(struct hostapd_bss_config *bss)
1174 {
1175 struct sae_password_entry *pw;
1176 bool res = false;
1177
1178 if (bss->ssid.wpa_passphrase &&
1179 #ifdef CONFIG_TESTING_OPTIONS
1180 !bss->sae_pk_password_check_skip &&
1181 #endif /* CONFIG_TESTING_OPTIONS */
1182 sae_pk_valid_password(bss->ssid.wpa_passphrase))
1183 res = true;
1184
1185 for (pw = bss->sae_passwords; pw; pw = pw->next) {
1186 if (!pw->pk &&
1187 #ifdef CONFIG_TESTING_OPTIONS
1188 !bss->sae_pk_password_check_skip &&
1189 #endif /* CONFIG_TESTING_OPTIONS */
1190 sae_pk_valid_password(pw->password))
1191 return true;
1192
1193 if (bss->ssid.wpa_passphrase && res && pw->pk &&
1194 os_strcmp(bss->ssid.wpa_passphrase, pw->password) == 0)
1195 res = false;
1196 }
1197
1198 return res;
1199 }
1200 #endif /* CONFIG_SAE_PK */
1201
1202
hostapd_config_check_bss_6g(struct hostapd_bss_config * bss)1203 static bool hostapd_config_check_bss_6g(struct hostapd_bss_config *bss)
1204 {
1205 if (bss->wpa != WPA_PROTO_RSN) {
1206 wpa_printf(MSG_ERROR,
1207 "Pre-RSNA security methods are not allowed in 6 GHz");
1208 return false;
1209 }
1210
1211 if (bss->ieee80211w != MGMT_FRAME_PROTECTION_REQUIRED) {
1212 wpa_printf(MSG_ERROR,
1213 "Management frame protection is required in 6 GHz");
1214 return false;
1215 }
1216
1217 if (bss->wpa_key_mgmt & (WPA_KEY_MGMT_PSK |
1218 WPA_KEY_MGMT_FT_PSK |
1219 WPA_KEY_MGMT_PSK_SHA256)) {
1220 wpa_printf(MSG_ERROR, "Invalid AKM suite for 6 GHz");
1221 return false;
1222 }
1223
1224 if (bss->rsn_pairwise & (WPA_CIPHER_WEP40 |
1225 WPA_CIPHER_WEP104 |
1226 WPA_CIPHER_TKIP)) {
1227 wpa_printf(MSG_ERROR,
1228 "Invalid pairwise cipher suite for 6 GHz");
1229 return false;
1230 }
1231
1232 if (bss->wpa_group & (WPA_CIPHER_WEP40 |
1233 WPA_CIPHER_WEP104 |
1234 WPA_CIPHER_TKIP)) {
1235 wpa_printf(MSG_ERROR, "Invalid group cipher suite for 6 GHz");
1236 return false;
1237 }
1238
1239 #ifdef CONFIG_SAE
1240 if (wpa_key_mgmt_sae(bss->wpa_key_mgmt) &&
1241 bss->sae_pwe == SAE_PWE_HUNT_AND_PECK) {
1242 wpa_printf(MSG_INFO, "SAE: Enabling SAE H2E on 6 GHz");
1243 bss->sae_pwe = SAE_PWE_BOTH;
1244 }
1245 #endif /* CONFIG_SAE */
1246
1247 return true;
1248 }
1249
1250
hostapd_config_check_bss(struct hostapd_bss_config * bss,struct hostapd_config * conf,int full_config)1251 static int hostapd_config_check_bss(struct hostapd_bss_config *bss,
1252 struct hostapd_config *conf,
1253 int full_config)
1254 {
1255 if (full_config && is_6ghz_op_class(conf->op_class) &&
1256 !hostapd_config_check_bss_6g(bss))
1257 return -1;
1258
1259 if (full_config && bss->ieee802_1x && !bss->eap_server &&
1260 !bss->radius->auth_servers) {
1261 wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no "
1262 "EAP authenticator configured).");
1263 return -1;
1264 }
1265
1266 #ifdef CONFIG_WEP
1267 if (bss->wpa) {
1268 int wep, i;
1269
1270 wep = bss->default_wep_key_len > 0 ||
1271 bss->individual_wep_key_len > 0;
1272 for (i = 0; i < NUM_WEP_KEYS; i++) {
1273 if (bss->ssid.wep.keys_set) {
1274 wep = 1;
1275 break;
1276 }
1277 }
1278
1279 if (wep) {
1280 wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported");
1281 return -1;
1282 }
1283 }
1284 #endif /* CONFIG_WEP */
1285
1286 if (full_config && bss->wpa &&
1287 bss->wpa_psk_radius != PSK_RADIUS_IGNORED &&
1288 bss->wpa_psk_radius != PSK_RADIUS_DURING_4WAY_HS &&
1289 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) {
1290 wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no "
1291 "RADIUS checking (macaddr_acl=2) enabled.");
1292 return -1;
1293 }
1294
1295 if (full_config && bss->wpa &&
1296 wpa_key_mgmt_wpa_psk_no_sae(bss->wpa_key_mgmt) &&
1297 bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL &&
1298 bss->ssid.wpa_psk_file == NULL &&
1299 bss->wpa_psk_radius != PSK_RADIUS_DURING_4WAY_HS &&
1300 (bss->wpa_psk_radius != PSK_RADIUS_REQUIRED ||
1301 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) {
1302 wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase "
1303 "is not configured.");
1304 return -1;
1305 }
1306
1307 if (full_config && !is_zero_ether_addr(bss->bssid)) {
1308 size_t i;
1309
1310 for (i = 0; i < conf->num_bss; i++) {
1311 if (conf->bss[i] != bss &&
1312 (hostapd_mac_comp(conf->bss[i]->bssid,
1313 bss->bssid) == 0)) {
1314 wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR
1315 " on interface '%s' and '%s'.",
1316 MAC2STR(bss->bssid),
1317 conf->bss[i]->iface, bss->iface);
1318 return -1;
1319 }
1320 }
1321 }
1322
1323 #ifdef CONFIG_IEEE80211R_AP
1324 if (full_config && wpa_key_mgmt_ft(bss->wpa_key_mgmt) &&
1325 (bss->nas_identifier == NULL ||
1326 os_strlen(bss->nas_identifier) < 1 ||
1327 os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) {
1328 wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires "
1329 "nas_identifier to be configured as a 1..48 octet "
1330 "string");
1331 return -1;
1332 }
1333 #endif /* CONFIG_IEEE80211R_AP */
1334
1335 if (full_config && conf->ieee80211n &&
1336 conf->hw_mode == HOSTAPD_MODE_IEEE80211B) {
1337 bss->disable_11n = true;
1338 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not "
1339 "allowed, disabling HT capabilities");
1340 }
1341
1342 #ifdef CONFIG_WEP
1343 if (full_config && conf->ieee80211n &&
1344 bss->ssid.security_policy == SECURITY_STATIC_WEP) {
1345 bss->disable_11n = true;
1346 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not "
1347 "allowed, disabling HT capabilities");
1348 }
1349 #endif /* CONFIG_WEP */
1350
1351 if (full_config && conf->ieee80211n && bss->wpa &&
1352 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
1353 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1354 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
1355 {
1356 bss->disable_11n = true;
1357 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 "
1358 "requires CCMP/GCMP to be enabled, disabling HT "
1359 "capabilities");
1360 }
1361
1362 #ifdef CONFIG_IEEE80211AC
1363 #ifdef CONFIG_WEP
1364 if (full_config && conf->ieee80211ac &&
1365 bss->ssid.security_policy == SECURITY_STATIC_WEP) {
1366 bss->disable_11ac = true;
1367 wpa_printf(MSG_ERROR,
1368 "VHT (IEEE 802.11ac) with WEP is not allowed, disabling VHT capabilities");
1369 }
1370 #endif /* CONFIG_WEP */
1371
1372 if (full_config && conf->ieee80211ac && bss->wpa &&
1373 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
1374 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1375 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
1376 {
1377 bss->disable_11ac = true;
1378 wpa_printf(MSG_ERROR,
1379 "VHT (IEEE 802.11ac) with WPA/WPA2 requires CCMP/GCMP to be enabled, disabling VHT capabilities");
1380 }
1381 #endif /* CONFIG_IEEE80211AC */
1382
1383 #ifdef CONFIG_IEEE80211AX
1384 #ifdef CONFIG_WEP
1385 if (full_config && conf->ieee80211ax &&
1386 bss->ssid.security_policy == SECURITY_STATIC_WEP) {
1387 bss->disable_11ax = true;
1388 wpa_printf(MSG_ERROR,
1389 "HE (IEEE 802.11ax) with WEP is not allowed, disabling HE capabilities");
1390 }
1391 #endif /* CONFIG_WEP */
1392
1393 if (full_config && conf->ieee80211ax && bss->wpa &&
1394 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
1395 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1396 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
1397 {
1398 bss->disable_11ax = true;
1399 wpa_printf(MSG_ERROR,
1400 "HE (IEEE 802.11ax) with WPA/WPA2 requires CCMP/GCMP to be enabled, disabling HE capabilities");
1401 }
1402 #endif /* CONFIG_IEEE80211AX */
1403
1404 #ifdef CONFIG_WPS
1405 if (full_config && bss->wps_state && bss->ignore_broadcast_ssid) {
1406 wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid "
1407 "configuration forced WPS to be disabled");
1408 bss->wps_state = 0;
1409 }
1410
1411 #ifdef CONFIG_WEP
1412 if (full_config && bss->wps_state &&
1413 bss->ssid.wep.keys_set && bss->wpa == 0) {
1414 wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be "
1415 "disabled");
1416 bss->wps_state = 0;
1417 }
1418 #endif /* CONFIG_WEP */
1419
1420 if (full_config && bss->wps_state && bss->wpa &&
1421 (!(bss->wpa & 2) ||
1422 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1423 WPA_CIPHER_CCMP_256 |
1424 WPA_CIPHER_GCMP_256)))) {
1425 wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without "
1426 "WPA2/CCMP/GCMP forced WPS to be disabled");
1427 bss->wps_state = 0;
1428 }
1429 #endif /* CONFIG_WPS */
1430
1431 #ifdef CONFIG_HS20
1432 if (full_config && bss->hs20 &&
1433 (!(bss->wpa & 2) ||
1434 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
1435 WPA_CIPHER_CCMP_256 |
1436 WPA_CIPHER_GCMP_256)))) {
1437 wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP "
1438 "configuration is required for Hotspot 2.0 "
1439 "functionality");
1440 return -1;
1441 }
1442 #endif /* CONFIG_HS20 */
1443
1444 #ifdef CONFIG_MBO
1445 if (full_config && bss->mbo_enabled && (bss->wpa & 2) &&
1446 bss->ieee80211w == NO_MGMT_FRAME_PROTECTION) {
1447 wpa_printf(MSG_ERROR,
1448 "MBO: PMF needs to be enabled whenever using WPA2 with MBO");
1449 return -1;
1450 }
1451 #endif /* CONFIG_MBO */
1452
1453 #ifdef CONFIG_OCV
1454 if (full_config && bss->ieee80211w == NO_MGMT_FRAME_PROTECTION &&
1455 bss->ocv) {
1456 wpa_printf(MSG_ERROR,
1457 "OCV: PMF needs to be enabled whenever using OCV");
1458 return -1;
1459 }
1460 #endif /* CONFIG_OCV */
1461
1462 #ifdef CONFIG_SAE_PK
1463 if (full_config && hostapd_sae_pk_in_use(bss) &&
1464 hostapd_sae_pk_password_without_pk(bss)) {
1465 wpa_printf(MSG_ERROR,
1466 "SAE-PK: SAE password uses SAE-PK style, but does not have PK configured");
1467 return -1;
1468 }
1469 #endif /* CONFIG_SAE_PK */
1470
1471 #ifdef CONFIG_FILS
1472 if (full_config && bss->fils_discovery_max_int &&
1473 (!conf->ieee80211ax || bss->disable_11ax)) {
1474 wpa_printf(MSG_ERROR,
1475 "Currently IEEE 802.11ax support is mandatory to enable FILS discovery transmission.");
1476 return -1;
1477 }
1478
1479 if (full_config && bss->fils_discovery_max_int &&
1480 bss->unsol_bcast_probe_resp_interval) {
1481 wpa_printf(MSG_ERROR,
1482 "Cannot enable both FILS discovery and unsolicited broadcast Probe Response at the same time");
1483 return -1;
1484 }
1485 #endif /* CONFIG_FILS */
1486
1487 #ifdef CONFIG_IEEE80211BE
1488 if (full_config && !bss->disable_11be && bss->disable_11ax) {
1489 bss->disable_11be = true;
1490 wpa_printf(MSG_INFO,
1491 "Disabling IEEE 802.11be as IEEE 802.11ax is disabled for this BSS");
1492 }
1493
1494 if (full_config && conf->ieee80211be && !bss->disable_11be &&
1495 !bss->beacon_prot && ap_pmf_enabled(bss)) {
1496 bss->beacon_prot = 1;
1497 wpa_printf(MSG_INFO,
1498 "Enabling beacon protection as IEEE 802.11be is enabled for this BSS");
1499 }
1500 #endif /* CONFIG_IEEE80211BE */
1501
1502 if (full_config && bss->ignore_broadcast_ssid && conf->mbssid) {
1503 wpa_printf(MSG_ERROR,
1504 "Hidden SSID is not suppored when MBSSID is enabled");
1505 return -1;
1506 }
1507
1508 /* Do not advertise SPP A-MSDU support if not using CCMP/GCMP */
1509 if (full_config && bss->spp_amsdu &&
1510 !(bss->wpa &&
1511 bss->rsn_pairwise & (WPA_CIPHER_CCMP_256 | WPA_CIPHER_CCMP |
1512 WPA_CIPHER_GCMP_256 | WPA_CIPHER_GCMP)))
1513 bss->spp_amsdu = false;
1514
1515 return 0;
1516 }
1517
1518
hostapd_config_check_cw(struct hostapd_config * conf,int queue)1519 static int hostapd_config_check_cw(struct hostapd_config *conf, int queue)
1520 {
1521 int tx_cwmin = conf->tx_queue[queue].cwmin;
1522 int tx_cwmax = conf->tx_queue[queue].cwmax;
1523 int ac_cwmin = conf->wmm_ac_params[queue].cwmin;
1524 int ac_cwmax = conf->wmm_ac_params[queue].cwmax;
1525
1526 if (tx_cwmin > tx_cwmax) {
1527 wpa_printf(MSG_ERROR,
1528 "Invalid TX queue cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)",
1529 tx_cwmin, tx_cwmax);
1530 return -1;
1531 }
1532 if (ac_cwmin > ac_cwmax) {
1533 wpa_printf(MSG_ERROR,
1534 "Invalid WMM AC cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)",
1535 ac_cwmin, ac_cwmax);
1536 return -1;
1537 }
1538 return 0;
1539 }
1540
1541
hostapd_config_check(struct hostapd_config * conf,int full_config)1542 int hostapd_config_check(struct hostapd_config *conf, int full_config)
1543 {
1544 size_t i;
1545
1546 if (full_config && is_6ghz_op_class(conf->op_class) &&
1547 !conf->hw_mode_set) {
1548 /* Use the appropriate hw_mode value automatically when the
1549 * op_class parameter has been set, but hw_mode was not. */
1550 conf->hw_mode = HOSTAPD_MODE_IEEE80211A;
1551 }
1552
1553 if (full_config && conf->ieee80211d &&
1554 (!conf->country[0] || !conf->country[1])) {
1555 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without "
1556 "setting the country_code");
1557 return -1;
1558 }
1559
1560 if (full_config && conf->ieee80211h && !conf->ieee80211d) {
1561 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without "
1562 "IEEE 802.11d enabled");
1563 return -1;
1564 }
1565
1566 if (full_config && conf->local_pwr_constraint != -1 &&
1567 !conf->ieee80211d) {
1568 wpa_printf(MSG_ERROR, "Cannot add Power Constraint element without Country element");
1569 return -1;
1570 }
1571
1572 if (full_config && conf->spectrum_mgmt_required &&
1573 conf->local_pwr_constraint == -1) {
1574 wpa_printf(MSG_ERROR, "Cannot set Spectrum Management bit without Country and Power Constraint elements");
1575 return -1;
1576 }
1577
1578 #ifdef CONFIG_AIRTIME_POLICY
1579 if (full_config && conf->airtime_mode > AIRTIME_MODE_STATIC &&
1580 !conf->airtime_update_interval) {
1581 wpa_printf(MSG_ERROR, "Airtime update interval cannot be zero");
1582 return -1;
1583 }
1584 #endif /* CONFIG_AIRTIME_POLICY */
1585 for (i = 0; i < NUM_TX_QUEUES; i++) {
1586 if (hostapd_config_check_cw(conf, i))
1587 return -1;
1588 }
1589
1590 #ifdef CONFIG_IEEE80211BE
1591 if (full_config && conf->ieee80211be && !conf->ieee80211ax) {
1592 wpa_printf(MSG_ERROR,
1593 "Cannot set ieee80211be without ieee80211ax");
1594 return -1;
1595 }
1596
1597 if (full_config)
1598 hostapd_set_and_check_bw320_offset(conf,
1599 conf->eht_bw320_offset);
1600 #endif /* CONFIG_IEEE80211BE */
1601
1602 if (full_config && conf->mbssid && !conf->ieee80211ax) {
1603 wpa_printf(MSG_ERROR,
1604 "Cannot enable multiple BSSID support without ieee80211ax");
1605 return -1;
1606 }
1607
1608 for (i = 0; i < conf->num_bss; i++) {
1609 if (hostapd_config_check_bss(conf->bss[i], conf, full_config))
1610 return -1;
1611 }
1612
1613 return 0;
1614 }
1615
1616
hostapd_set_security_params(struct hostapd_bss_config * bss,int full_config)1617 void hostapd_set_security_params(struct hostapd_bss_config *bss,
1618 int full_config)
1619 {
1620 #ifdef CONFIG_WEP
1621 if (bss->individual_wep_key_len == 0) {
1622 /* individual keys are not use; can use key idx0 for
1623 * broadcast keys */
1624 bss->broadcast_key_idx_min = 0;
1625 }
1626 #endif /* CONFIG_WEP */
1627
1628 if ((bss->wpa & 2) && bss->rsn_pairwise == 0)
1629 bss->rsn_pairwise = bss->wpa_pairwise;
1630 if (bss->group_cipher)
1631 bss->wpa_group = bss->group_cipher;
1632 else
1633 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa,
1634 bss->wpa_pairwise,
1635 bss->rsn_pairwise);
1636 if (!bss->wpa_group_rekey_set)
1637 bss->wpa_group_rekey = bss->wpa_group == WPA_CIPHER_TKIP ?
1638 600 : 86400;
1639
1640 if (full_config) {
1641 bss->radius->auth_server = bss->radius->auth_servers;
1642 bss->radius->acct_server = bss->radius->acct_servers;
1643 }
1644
1645 if (bss->wpa && bss->ieee802_1x) {
1646 bss->ssid.security_policy = SECURITY_WPA;
1647 } else if (bss->wpa) {
1648 bss->ssid.security_policy = SECURITY_WPA_PSK;
1649 } else if (bss->ieee802_1x) {
1650 int cipher = WPA_CIPHER_NONE;
1651 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
1652 #ifdef CONFIG_WEP
1653 bss->ssid.wep.default_len = bss->default_wep_key_len;
1654 if (full_config && bss->default_wep_key_len) {
1655 cipher = bss->default_wep_key_len >= 13 ?
1656 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40;
1657 } else if (full_config && bss->ssid.wep.keys_set) {
1658 if (bss->ssid.wep.len[0] >= 13)
1659 cipher = WPA_CIPHER_WEP104;
1660 else
1661 cipher = WPA_CIPHER_WEP40;
1662 }
1663 #endif /* CONFIG_WEP */
1664 bss->wpa_group = cipher;
1665 bss->wpa_pairwise = cipher;
1666 bss->rsn_pairwise = cipher;
1667 if (full_config)
1668 bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
1669 #ifdef CONFIG_WEP
1670 } else if (bss->ssid.wep.keys_set) {
1671 int cipher = WPA_CIPHER_WEP40;
1672 if (bss->ssid.wep.len[0] >= 13)
1673 cipher = WPA_CIPHER_WEP104;
1674 bss->ssid.security_policy = SECURITY_STATIC_WEP;
1675 bss->wpa_group = cipher;
1676 bss->wpa_pairwise = cipher;
1677 bss->rsn_pairwise = cipher;
1678 if (full_config)
1679 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE;
1680 #endif /* CONFIG_WEP */
1681 } else {
1682 bss->ssid.security_policy = SECURITY_PLAINTEXT;
1683 if (full_config) {
1684 bss->wpa_group = WPA_CIPHER_NONE;
1685 bss->wpa_pairwise = WPA_CIPHER_NONE;
1686 bss->rsn_pairwise = WPA_CIPHER_NONE;
1687 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE;
1688 }
1689 }
1690 }
1691
1692
hostapd_sae_pw_id_in_use(struct hostapd_bss_config * conf)1693 int hostapd_sae_pw_id_in_use(struct hostapd_bss_config *conf)
1694 {
1695 int with_id = 0, without_id = 0;
1696 struct sae_password_entry *pw;
1697
1698 if (conf->ssid.wpa_passphrase)
1699 without_id = 1;
1700
1701 for (pw = conf->sae_passwords; pw; pw = pw->next) {
1702 if (pw->identifier)
1703 with_id = 1;
1704 else
1705 without_id = 1;
1706 if (with_id && without_id)
1707 break;
1708 }
1709
1710 if (with_id && !without_id)
1711 return 2;
1712 return with_id;
1713 }
1714
1715
hostapd_sae_pk_in_use(struct hostapd_bss_config * conf)1716 bool hostapd_sae_pk_in_use(struct hostapd_bss_config *conf)
1717 {
1718 #ifdef CONFIG_SAE_PK
1719 struct sae_password_entry *pw;
1720
1721 for (pw = conf->sae_passwords; pw; pw = pw->next) {
1722 if (pw->pk)
1723 return true;
1724 }
1725 #endif /* CONFIG_SAE_PK */
1726
1727 return false;
1728 }
1729
1730
1731 #ifdef CONFIG_SAE_PK
hostapd_sae_pk_exclusively(struct hostapd_bss_config * conf)1732 bool hostapd_sae_pk_exclusively(struct hostapd_bss_config *conf)
1733 {
1734 bool with_pk = false;
1735 struct sae_password_entry *pw;
1736
1737 if (conf->ssid.wpa_passphrase)
1738 return false;
1739
1740 for (pw = conf->sae_passwords; pw; pw = pw->next) {
1741 if (!pw->pk)
1742 return false;
1743 with_pk = true;
1744 }
1745
1746 return with_pk;
1747 }
1748 #endif /* CONFIG_SAE_PK */
1749
1750
hostapd_acl_comp(const void * a,const void * b)1751 int hostapd_acl_comp(const void *a, const void *b)
1752 {
1753 const struct mac_acl_entry *aa = a;
1754 const struct mac_acl_entry *bb = b;
1755 return os_memcmp(aa->addr, bb->addr, sizeof(macaddr));
1756 }
1757
1758
hostapd_add_acl_maclist(struct mac_acl_entry ** acl,int * num,int vlan_id,const u8 * addr)1759 int hostapd_add_acl_maclist(struct mac_acl_entry **acl, int *num,
1760 int vlan_id, const u8 *addr)
1761 {
1762 struct mac_acl_entry *newacl;
1763
1764 newacl = os_realloc_array(*acl, *num + 1, sizeof(**acl));
1765 if (!newacl) {
1766 wpa_printf(MSG_ERROR, "MAC list reallocation failed");
1767 return -1;
1768 }
1769
1770 *acl = newacl;
1771 os_memcpy((*acl)[*num].addr, addr, ETH_ALEN);
1772 os_memset(&(*acl)[*num].vlan_id, 0, sizeof((*acl)[*num].vlan_id));
1773 (*acl)[*num].vlan_id.untagged = vlan_id;
1774 (*acl)[*num].vlan_id.notempty = !!vlan_id;
1775 (*num)++;
1776
1777 return 0;
1778 }
1779
1780
hostapd_remove_acl_mac(struct mac_acl_entry ** acl,int * num,const u8 * addr)1781 void hostapd_remove_acl_mac(struct mac_acl_entry **acl, int *num,
1782 const u8 *addr)
1783 {
1784 int i = 0;
1785
1786 while (i < *num) {
1787 if (ether_addr_equal((*acl)[i].addr, addr)) {
1788 os_remove_in_array(*acl, *num, sizeof(**acl), i);
1789 (*num)--;
1790 } else {
1791 i++;
1792 }
1793 }
1794 }
1795