1 /*
2 * hostapd / Configuration helper functions
3 * Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "utils/includes.h"
10
11 #include "utils/common.h"
12 #include "crypto/sha1.h"
13 #include "radius/radius_client.h"
14 #include "common/ieee802_11_defs.h"
15 #include "common/eapol_common.h"
16 #include "common/dhcp.h"
17 #include "eap_common/eap_wsc_common.h"
18 #include "eap_server/eap.h"
19 #include "wpa_auth.h"
20 #include "sta_info.h"
21 #include "ap_config.h"
22
23
hostapd_config_free_vlan(struct hostapd_bss_config * bss)24 static void hostapd_config_free_vlan(struct hostapd_bss_config *bss)
25 {
26 struct hostapd_vlan *vlan, *prev;
27
28 vlan = bss->vlan;
29 prev = NULL;
30 while (vlan) {
31 prev = vlan;
32 vlan = vlan->next;
33 os_free(prev);
34 }
35
36 bss->vlan = NULL;
37 }
38
39
hostapd_config_defaults_bss(struct hostapd_bss_config * bss)40 void hostapd_config_defaults_bss(struct hostapd_bss_config *bss)
41 {
42 dl_list_init(&bss->anqp_elem);
43
44 bss->logger_syslog_level = HOSTAPD_LEVEL_INFO;
45 bss->logger_stdout_level = HOSTAPD_LEVEL_INFO;
46 bss->logger_syslog = (unsigned int) -1;
47 bss->logger_stdout = (unsigned int) -1;
48
49 bss->auth_algs = WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED;
50
51 bss->wep_rekeying_period = 300;
52 /* use key0 in individual key and key1 in broadcast key */
53 bss->broadcast_key_idx_min = 1;
54 bss->broadcast_key_idx_max = 2;
55 bss->eap_reauth_period = 3600;
56
57 bss->wpa_group_rekey = 600;
58 bss->wpa_gmk_rekey = 86400;
59 bss->wpa_group_update_count = 4;
60 bss->wpa_pairwise_update_count = 4;
61 bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
62 bss->wpa_pairwise = WPA_CIPHER_TKIP;
63 bss->wpa_group = WPA_CIPHER_TKIP;
64 bss->rsn_pairwise = 0;
65
66 bss->max_num_sta = MAX_STA_COUNT;
67
68 bss->dtim_period = 2;
69
70 bss->radius_server_auth_port = 1812;
71 bss->eap_sim_db_timeout = 1;
72 bss->ap_max_inactivity = AP_MAX_INACTIVITY;
73 bss->eapol_version = EAPOL_VERSION;
74
75 bss->max_listen_interval = 65535;
76
77 bss->pwd_group = 19; /* ECC: GF(p=256) */
78
79 #ifdef CONFIG_IEEE80211W
80 bss->assoc_sa_query_max_timeout = 1000;
81 bss->assoc_sa_query_retry_timeout = 201;
82 bss->group_mgmt_cipher = WPA_CIPHER_AES_128_CMAC;
83 #endif /* CONFIG_IEEE80211W */
84 #ifdef EAP_SERVER_FAST
85 /* both anonymous and authenticated provisioning */
86 bss->eap_fast_prov = 3;
87 bss->pac_key_lifetime = 7 * 24 * 60 * 60;
88 bss->pac_key_refresh_time = 1 * 24 * 60 * 60;
89 #endif /* EAP_SERVER_FAST */
90
91 /* Set to -1 as defaults depends on HT in setup */
92 bss->wmm_enabled = -1;
93
94 #ifdef CONFIG_IEEE80211R_AP
95 bss->ft_over_ds = 1;
96 #endif /* CONFIG_IEEE80211R_AP */
97
98 bss->radius_das_time_window = 300;
99
100 bss->sae_anti_clogging_threshold = 5;
101
102 bss->gas_frag_limit = 1400;
103
104 #ifdef CONFIG_FILS
105 dl_list_init(&bss->fils_realms);
106 bss->fils_hlp_wait_time = 30;
107 bss->dhcp_server_port = DHCP_SERVER_PORT;
108 bss->dhcp_relay_port = DHCP_SERVER_PORT;
109 #endif /* CONFIG_FILS */
110 }
111
112
hostapd_config_defaults(void)113 struct hostapd_config * hostapd_config_defaults(void)
114 {
115 #define ecw2cw(ecw) ((1 << (ecw)) - 1)
116
117 struct hostapd_config *conf;
118 struct hostapd_bss_config *bss;
119 const int aCWmin = 4, aCWmax = 10;
120 const struct hostapd_wmm_ac_params ac_bk =
121 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
122 const struct hostapd_wmm_ac_params ac_be =
123 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
124 const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
125 { aCWmin - 1, aCWmin, 2, 3008 / 32, 0 };
126 const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
127 { aCWmin - 2, aCWmin - 1, 2, 1504 / 32, 0 };
128 const struct hostapd_tx_queue_params txq_bk =
129 { 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 };
130 const struct hostapd_tx_queue_params txq_be =
131 { 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0};
132 const struct hostapd_tx_queue_params txq_vi =
133 { 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30};
134 const struct hostapd_tx_queue_params txq_vo =
135 { 1, (ecw2cw(aCWmin) + 1) / 4 - 1,
136 (ecw2cw(aCWmin) + 1) / 2 - 1, 15};
137
138 #undef ecw2cw
139
140 conf = os_zalloc(sizeof(*conf));
141 bss = os_zalloc(sizeof(*bss));
142 if (conf == NULL || bss == NULL) {
143 wpa_printf(MSG_ERROR, "Failed to allocate memory for "
144 "configuration data.");
145 os_free(conf);
146 os_free(bss);
147 return NULL;
148 }
149 conf->bss = os_calloc(1, sizeof(struct hostapd_bss_config *));
150 if (conf->bss == NULL) {
151 os_free(conf);
152 os_free(bss);
153 return NULL;
154 }
155 conf->bss[0] = bss;
156
157 bss->radius = os_zalloc(sizeof(*bss->radius));
158 if (bss->radius == NULL) {
159 os_free(conf->bss);
160 os_free(conf);
161 os_free(bss);
162 return NULL;
163 }
164
165 hostapd_config_defaults_bss(bss);
166
167 conf->num_bss = 1;
168
169 conf->beacon_int = 100;
170 conf->rts_threshold = -1; /* use driver default: 2347 */
171 conf->fragm_threshold = -1; /* user driver default: 2346 */
172 conf->send_probe_response = 1;
173 /* Set to invalid value means do not add Power Constraint IE */
174 conf->local_pwr_constraint = -1;
175
176 conf->wmm_ac_params[0] = ac_be;
177 conf->wmm_ac_params[1] = ac_bk;
178 conf->wmm_ac_params[2] = ac_vi;
179 conf->wmm_ac_params[3] = ac_vo;
180
181 conf->tx_queue[0] = txq_vo;
182 conf->tx_queue[1] = txq_vi;
183 conf->tx_queue[2] = txq_be;
184 conf->tx_queue[3] = txq_bk;
185
186 conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED;
187
188 conf->ap_table_max_size = 255;
189 conf->ap_table_expiration_time = 60;
190 conf->track_sta_max_age = 180;
191
192 #ifdef CONFIG_TESTING_OPTIONS
193 conf->ignore_probe_probability = 0.0;
194 conf->ignore_auth_probability = 0.0;
195 conf->ignore_assoc_probability = 0.0;
196 conf->ignore_reassoc_probability = 0.0;
197 conf->corrupt_gtk_rekey_mic_probability = 0.0;
198 conf->ecsa_ie_only = 0;
199 #endif /* CONFIG_TESTING_OPTIONS */
200
201 conf->acs = 0;
202 conf->acs_ch_list.num = 0;
203 #ifdef CONFIG_ACS
204 conf->acs_num_scans = 5;
205 #endif /* CONFIG_ACS */
206
207 return conf;
208 }
209
210
hostapd_mac_comp(const void * a,const void * b)211 int hostapd_mac_comp(const void *a, const void *b)
212 {
213 return os_memcmp(a, b, sizeof(macaddr));
214 }
215
216
hostapd_config_read_wpa_psk(const char * fname,struct hostapd_ssid * ssid)217 static int hostapd_config_read_wpa_psk(const char *fname,
218 struct hostapd_ssid *ssid)
219 {
220 FILE *f;
221 char buf[128], *pos;
222 int line = 0, ret = 0, len, ok;
223 u8 addr[ETH_ALEN];
224 struct hostapd_wpa_psk *psk;
225
226 if (!fname)
227 return 0;
228
229 f = fopen(fname, "r");
230 if (!f) {
231 wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname);
232 return -1;
233 }
234
235 while (fgets(buf, sizeof(buf), f)) {
236 line++;
237
238 if (buf[0] == '#')
239 continue;
240 pos = buf;
241 while (*pos != '\0') {
242 if (*pos == '\n') {
243 *pos = '\0';
244 break;
245 }
246 pos++;
247 }
248 if (buf[0] == '\0')
249 continue;
250
251 if (hwaddr_aton(buf, addr)) {
252 wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on "
253 "line %d in '%s'", buf, line, fname);
254 ret = -1;
255 break;
256 }
257
258 psk = os_zalloc(sizeof(*psk));
259 if (psk == NULL) {
260 wpa_printf(MSG_ERROR, "WPA PSK allocation failed");
261 ret = -1;
262 break;
263 }
264 if (is_zero_ether_addr(addr))
265 psk->group = 1;
266 else
267 os_memcpy(psk->addr, addr, ETH_ALEN);
268
269 pos = buf + 17;
270 if (*pos == '\0') {
271 wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'",
272 line, fname);
273 os_free(psk);
274 ret = -1;
275 break;
276 }
277 pos++;
278
279 ok = 0;
280 len = os_strlen(pos);
281 if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
282 ok = 1;
283 else if (len >= 8 && len < 64) {
284 pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len,
285 4096, psk->psk, PMK_LEN);
286 ok = 1;
287 }
288 if (!ok) {
289 wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in "
290 "'%s'", pos, line, fname);
291 os_free(psk);
292 ret = -1;
293 break;
294 }
295
296 psk->next = ssid->wpa_psk;
297 ssid->wpa_psk = psk;
298 }
299
300 fclose(f);
301
302 return ret;
303 }
304
305
hostapd_derive_psk(struct hostapd_ssid * ssid)306 static int hostapd_derive_psk(struct hostapd_ssid *ssid)
307 {
308 ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
309 if (ssid->wpa_psk == NULL) {
310 wpa_printf(MSG_ERROR, "Unable to alloc space for PSK");
311 return -1;
312 }
313 wpa_hexdump_ascii(MSG_DEBUG, "SSID",
314 (u8 *) ssid->ssid, ssid->ssid_len);
315 wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)",
316 (u8 *) ssid->wpa_passphrase,
317 os_strlen(ssid->wpa_passphrase));
318 pbkdf2_sha1(ssid->wpa_passphrase,
319 ssid->ssid, ssid->ssid_len,
320 4096, ssid->wpa_psk->psk, PMK_LEN);
321 wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)",
322 ssid->wpa_psk->psk, PMK_LEN);
323 return 0;
324 }
325
326
hostapd_setup_wpa_psk(struct hostapd_bss_config * conf)327 int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
328 {
329 struct hostapd_ssid *ssid = &conf->ssid;
330
331 if (ssid->wpa_passphrase != NULL) {
332 if (ssid->wpa_psk != NULL) {
333 wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK "
334 "instead of passphrase");
335 } else {
336 wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on "
337 "passphrase");
338 if (hostapd_derive_psk(ssid) < 0)
339 return -1;
340 }
341 ssid->wpa_psk->group = 1;
342 }
343
344 return hostapd_config_read_wpa_psk(ssid->wpa_psk_file, &conf->ssid);
345 }
346
347
hostapd_config_free_radius(struct hostapd_radius_server * servers,int num_servers)348 static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
349 int num_servers)
350 {
351 int i;
352
353 for (i = 0; i < num_servers; i++) {
354 os_free(servers[i].shared_secret);
355 }
356 os_free(servers);
357 }
358
359
360 struct hostapd_radius_attr *
hostapd_config_get_radius_attr(struct hostapd_radius_attr * attr,u8 type)361 hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type)
362 {
363 for (; attr; attr = attr->next) {
364 if (attr->type == type)
365 return attr;
366 }
367 return NULL;
368 }
369
370
hostapd_config_free_radius_attr(struct hostapd_radius_attr * attr)371 static void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr)
372 {
373 struct hostapd_radius_attr *prev;
374
375 while (attr) {
376 prev = attr;
377 attr = attr->next;
378 wpabuf_free(prev->val);
379 os_free(prev);
380 }
381 }
382
383
hostapd_config_free_eap_user(struct hostapd_eap_user * user)384 void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
385 {
386 hostapd_config_free_radius_attr(user->accept_attr);
387 os_free(user->identity);
388 bin_clear_free(user->password, user->password_len);
389 os_free(user);
390 }
391
392
hostapd_config_free_eap_users(struct hostapd_eap_user * user)393 void hostapd_config_free_eap_users(struct hostapd_eap_user *user)
394 {
395 struct hostapd_eap_user *prev_user;
396
397 while (user) {
398 prev_user = user;
399 user = user->next;
400 hostapd_config_free_eap_user(prev_user);
401 }
402 }
403
404
hostapd_config_free_wep(struct hostapd_wep_keys * keys)405 static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
406 {
407 int i;
408 for (i = 0; i < NUM_WEP_KEYS; i++) {
409 bin_clear_free(keys->key[i], keys->len[i]);
410 keys->key[i] = NULL;
411 }
412 }
413
414
hostapd_config_clear_wpa_psk(struct hostapd_wpa_psk ** l)415 void hostapd_config_clear_wpa_psk(struct hostapd_wpa_psk **l)
416 {
417 struct hostapd_wpa_psk *psk, *tmp;
418
419 for (psk = *l; psk;) {
420 tmp = psk;
421 psk = psk->next;
422 bin_clear_free(tmp, sizeof(*tmp));
423 }
424 *l = NULL;
425 }
426
427
hostapd_config_free_anqp_elem(struct hostapd_bss_config * conf)428 static void hostapd_config_free_anqp_elem(struct hostapd_bss_config *conf)
429 {
430 struct anqp_element *elem;
431
432 while ((elem = dl_list_first(&conf->anqp_elem, struct anqp_element,
433 list))) {
434 dl_list_del(&elem->list);
435 wpabuf_free(elem->payload);
436 os_free(elem);
437 }
438 }
439
440
hostapd_config_free_fils_realms(struct hostapd_bss_config * conf)441 static void hostapd_config_free_fils_realms(struct hostapd_bss_config *conf)
442 {
443 #ifdef CONFIG_FILS
444 struct fils_realm *realm;
445
446 while ((realm = dl_list_first(&conf->fils_realms, struct fils_realm,
447 list))) {
448 dl_list_del(&realm->list);
449 os_free(realm);
450 }
451 #endif /* CONFIG_FILS */
452 }
453
454
hostapd_config_free_bss(struct hostapd_bss_config * conf)455 void hostapd_config_free_bss(struct hostapd_bss_config *conf)
456 {
457 if (conf == NULL)
458 return;
459
460 hostapd_config_clear_wpa_psk(&conf->ssid.wpa_psk);
461
462 str_clear_free(conf->ssid.wpa_passphrase);
463 os_free(conf->ssid.wpa_psk_file);
464 hostapd_config_free_wep(&conf->ssid.wep);
465 #ifdef CONFIG_FULL_DYNAMIC_VLAN
466 os_free(conf->ssid.vlan_tagged_interface);
467 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
468
469 hostapd_config_free_eap_users(conf->eap_user);
470 os_free(conf->eap_user_sqlite);
471
472 os_free(conf->eap_req_id_text);
473 os_free(conf->erp_domain);
474 os_free(conf->accept_mac);
475 os_free(conf->deny_mac);
476 os_free(conf->nas_identifier);
477 if (conf->radius) {
478 hostapd_config_free_radius(conf->radius->auth_servers,
479 conf->radius->num_auth_servers);
480 hostapd_config_free_radius(conf->radius->acct_servers,
481 conf->radius->num_acct_servers);
482 }
483 hostapd_config_free_radius_attr(conf->radius_auth_req_attr);
484 hostapd_config_free_radius_attr(conf->radius_acct_req_attr);
485 os_free(conf->rsn_preauth_interfaces);
486 os_free(conf->ctrl_interface);
487 os_free(conf->ca_cert);
488 os_free(conf->server_cert);
489 os_free(conf->private_key);
490 os_free(conf->private_key_passwd);
491 os_free(conf->ocsp_stapling_response);
492 os_free(conf->ocsp_stapling_response_multi);
493 os_free(conf->dh_file);
494 os_free(conf->openssl_ciphers);
495 os_free(conf->pac_opaque_encr_key);
496 os_free(conf->eap_fast_a_id);
497 os_free(conf->eap_fast_a_id_info);
498 os_free(conf->eap_sim_db);
499 os_free(conf->radius_server_clients);
500 os_free(conf->radius);
501 os_free(conf->radius_das_shared_secret);
502 hostapd_config_free_vlan(conf);
503 os_free(conf->time_zone);
504
505 #ifdef CONFIG_IEEE80211R_AP
506 {
507 struct ft_remote_r0kh *r0kh, *r0kh_prev;
508 struct ft_remote_r1kh *r1kh, *r1kh_prev;
509
510 r0kh = conf->r0kh_list;
511 conf->r0kh_list = NULL;
512 while (r0kh) {
513 r0kh_prev = r0kh;
514 r0kh = r0kh->next;
515 os_free(r0kh_prev);
516 }
517
518 r1kh = conf->r1kh_list;
519 conf->r1kh_list = NULL;
520 while (r1kh) {
521 r1kh_prev = r1kh;
522 r1kh = r1kh->next;
523 os_free(r1kh_prev);
524 }
525 }
526 #endif /* CONFIG_IEEE80211R_AP */
527
528 #ifdef CONFIG_WPS
529 os_free(conf->wps_pin_requests);
530 os_free(conf->device_name);
531 os_free(conf->manufacturer);
532 os_free(conf->model_name);
533 os_free(conf->model_number);
534 os_free(conf->serial_number);
535 os_free(conf->config_methods);
536 os_free(conf->ap_pin);
537 os_free(conf->extra_cred);
538 os_free(conf->ap_settings);
539 os_free(conf->upnp_iface);
540 os_free(conf->friendly_name);
541 os_free(conf->manufacturer_url);
542 os_free(conf->model_description);
543 os_free(conf->model_url);
544 os_free(conf->upc);
545 {
546 unsigned int i;
547
548 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++)
549 wpabuf_free(conf->wps_vendor_ext[i]);
550 }
551 wpabuf_free(conf->wps_nfc_dh_pubkey);
552 wpabuf_free(conf->wps_nfc_dh_privkey);
553 wpabuf_free(conf->wps_nfc_dev_pw);
554 #endif /* CONFIG_WPS */
555
556 os_free(conf->roaming_consortium);
557 os_free(conf->venue_name);
558 os_free(conf->nai_realm_data);
559 os_free(conf->network_auth_type);
560 os_free(conf->anqp_3gpp_cell_net);
561 os_free(conf->domain_name);
562 hostapd_config_free_anqp_elem(conf);
563
564 #ifdef CONFIG_RADIUS_TEST
565 os_free(conf->dump_msk_file);
566 #endif /* CONFIG_RADIUS_TEST */
567
568 #ifdef CONFIG_HS20
569 os_free(conf->hs20_oper_friendly_name);
570 os_free(conf->hs20_wan_metrics);
571 os_free(conf->hs20_connection_capability);
572 os_free(conf->hs20_operating_class);
573 os_free(conf->hs20_icons);
574 if (conf->hs20_osu_providers) {
575 size_t i;
576 for (i = 0; i < conf->hs20_osu_providers_count; i++) {
577 struct hs20_osu_provider *p;
578 size_t j;
579 p = &conf->hs20_osu_providers[i];
580 os_free(p->friendly_name);
581 os_free(p->server_uri);
582 os_free(p->method_list);
583 for (j = 0; j < p->icons_count; j++)
584 os_free(p->icons[j]);
585 os_free(p->icons);
586 os_free(p->osu_nai);
587 os_free(p->service_desc);
588 }
589 os_free(conf->hs20_osu_providers);
590 }
591 os_free(conf->subscr_remediation_url);
592 #endif /* CONFIG_HS20 */
593
594 wpabuf_free(conf->vendor_elements);
595 wpabuf_free(conf->assocresp_elements);
596
597 os_free(conf->sae_groups);
598
599 os_free(conf->wowlan_triggers);
600
601 os_free(conf->server_id);
602
603 #ifdef CONFIG_TESTING_OPTIONS
604 wpabuf_free(conf->own_ie_override);
605 #endif /* CONFIG_TESTING_OPTIONS */
606
607 os_free(conf->no_probe_resp_if_seen_on);
608 os_free(conf->no_auth_if_seen_on);
609
610 hostapd_config_free_fils_realms(conf);
611
612 os_free(conf);
613 }
614
615
616 /**
617 * hostapd_config_free - Free hostapd configuration
618 * @conf: Configuration data from hostapd_config_read().
619 */
hostapd_config_free(struct hostapd_config * conf)620 void hostapd_config_free(struct hostapd_config *conf)
621 {
622 size_t i;
623
624 if (conf == NULL)
625 return;
626
627 for (i = 0; i < conf->num_bss; i++)
628 hostapd_config_free_bss(conf->bss[i]);
629 os_free(conf->bss);
630 os_free(conf->supported_rates);
631 os_free(conf->basic_rates);
632 os_free(conf->acs_ch_list.range);
633 os_free(conf->driver_params);
634 #ifdef CONFIG_ACS
635 os_free(conf->acs_chan_bias);
636 #endif /* CONFIG_ACS */
637 wpabuf_free(conf->lci);
638 wpabuf_free(conf->civic);
639
640 os_free(conf);
641 }
642
643
644 /**
645 * hostapd_maclist_found - Find a MAC address from a list
646 * @list: MAC address list
647 * @num_entries: Number of addresses in the list
648 * @addr: Address to search for
649 * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed
650 * Returns: 1 if address is in the list or 0 if not.
651 *
652 * Perform a binary search for given MAC address from a pre-sorted list.
653 */
hostapd_maclist_found(struct mac_acl_entry * list,int num_entries,const u8 * addr,struct vlan_description * vlan_id)654 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries,
655 const u8 *addr, struct vlan_description *vlan_id)
656 {
657 int start, end, middle, res;
658
659 start = 0;
660 end = num_entries - 1;
661
662 while (start <= end) {
663 middle = (start + end) / 2;
664 res = os_memcmp(list[middle].addr, addr, ETH_ALEN);
665 if (res == 0) {
666 if (vlan_id)
667 *vlan_id = list[middle].vlan_id;
668 return 1;
669 }
670 if (res < 0)
671 start = middle + 1;
672 else
673 end = middle - 1;
674 }
675
676 return 0;
677 }
678
679
hostapd_rate_found(int * list,int rate)680 int hostapd_rate_found(int *list, int rate)
681 {
682 int i;
683
684 if (list == NULL)
685 return 0;
686
687 for (i = 0; list[i] >= 0; i++)
688 if (list[i] == rate)
689 return 1;
690
691 return 0;
692 }
693
694
hostapd_vlan_valid(struct hostapd_vlan * vlan,struct vlan_description * vlan_desc)695 int hostapd_vlan_valid(struct hostapd_vlan *vlan,
696 struct vlan_description *vlan_desc)
697 {
698 struct hostapd_vlan *v = vlan;
699 int i;
700
701 if (!vlan_desc->notempty || vlan_desc->untagged < 0 ||
702 vlan_desc->untagged > MAX_VLAN_ID)
703 return 0;
704 for (i = 0; i < MAX_NUM_TAGGED_VLAN; i++) {
705 if (vlan_desc->tagged[i] < 0 ||
706 vlan_desc->tagged[i] > MAX_VLAN_ID)
707 return 0;
708 }
709 if (!vlan_desc->untagged && !vlan_desc->tagged[0])
710 return 0;
711
712 while (v) {
713 if (!vlan_compare(&v->vlan_desc, vlan_desc) ||
714 v->vlan_id == VLAN_ID_WILDCARD)
715 return 1;
716 v = v->next;
717 }
718 return 0;
719 }
720
721
hostapd_get_vlan_id_ifname(struct hostapd_vlan * vlan,int vlan_id)722 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id)
723 {
724 struct hostapd_vlan *v = vlan;
725 while (v) {
726 if (v->vlan_id == vlan_id)
727 return v->ifname;
728 v = v->next;
729 }
730 return NULL;
731 }
732
733
hostapd_get_psk(const struct hostapd_bss_config * conf,const u8 * addr,const u8 * p2p_dev_addr,const u8 * prev_psk)734 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
735 const u8 *addr, const u8 *p2p_dev_addr,
736 const u8 *prev_psk)
737 {
738 struct hostapd_wpa_psk *psk;
739 int next_ok = prev_psk == NULL;
740
741 if (p2p_dev_addr && !is_zero_ether_addr(p2p_dev_addr)) {
742 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
743 " p2p_dev_addr=" MACSTR " prev_psk=%p",
744 MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk);
745 addr = NULL; /* Use P2P Device Address for matching */
746 } else {
747 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
748 " prev_psk=%p",
749 MAC2STR(addr), prev_psk);
750 }
751
752 for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
753 if (next_ok &&
754 (psk->group ||
755 (addr && os_memcmp(psk->addr, addr, ETH_ALEN) == 0) ||
756 (!addr && p2p_dev_addr &&
757 os_memcmp(psk->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) ==
758 0)))
759 return psk->psk;
760
761 if (psk->psk == prev_psk)
762 next_ok = 1;
763 }
764
765 return NULL;
766 }
767
768
hostapd_config_check_bss(struct hostapd_bss_config * bss,struct hostapd_config * conf,int full_config)769 static int hostapd_config_check_bss(struct hostapd_bss_config *bss,
770 struct hostapd_config *conf,
771 int full_config)
772 {
773 if (full_config && bss->ieee802_1x && !bss->eap_server &&
774 !bss->radius->auth_servers) {
775 wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no "
776 "EAP authenticator configured).");
777 return -1;
778 }
779
780 if (bss->wpa) {
781 int wep, i;
782
783 wep = bss->default_wep_key_len > 0 ||
784 bss->individual_wep_key_len > 0;
785 for (i = 0; i < NUM_WEP_KEYS; i++) {
786 if (bss->ssid.wep.keys_set) {
787 wep = 1;
788 break;
789 }
790 }
791
792 if (wep) {
793 wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported");
794 return -1;
795 }
796 }
797
798 if (full_config && bss->wpa &&
799 bss->wpa_psk_radius != PSK_RADIUS_IGNORED &&
800 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) {
801 wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no "
802 "RADIUS checking (macaddr_acl=2) enabled.");
803 return -1;
804 }
805
806 if (full_config && bss->wpa && (bss->wpa_key_mgmt & WPA_KEY_MGMT_PSK) &&
807 bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL &&
808 bss->ssid.wpa_psk_file == NULL &&
809 (bss->wpa_psk_radius != PSK_RADIUS_REQUIRED ||
810 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) {
811 wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase "
812 "is not configured.");
813 return -1;
814 }
815
816 if (full_config && !is_zero_ether_addr(bss->bssid)) {
817 size_t i;
818
819 for (i = 0; i < conf->num_bss; i++) {
820 if (conf->bss[i] != bss &&
821 (hostapd_mac_comp(conf->bss[i]->bssid,
822 bss->bssid) == 0)) {
823 wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR
824 " on interface '%s' and '%s'.",
825 MAC2STR(bss->bssid),
826 conf->bss[i]->iface, bss->iface);
827 return -1;
828 }
829 }
830 }
831
832 #ifdef CONFIG_IEEE80211R_AP
833 if (full_config && wpa_key_mgmt_ft(bss->wpa_key_mgmt) &&
834 (bss->nas_identifier == NULL ||
835 os_strlen(bss->nas_identifier) < 1 ||
836 os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) {
837 wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires "
838 "nas_identifier to be configured as a 1..48 octet "
839 "string");
840 return -1;
841 }
842 #endif /* CONFIG_IEEE80211R_AP */
843
844 #ifdef CONFIG_IEEE80211N
845 if (full_config && conf->ieee80211n &&
846 conf->hw_mode == HOSTAPD_MODE_IEEE80211B) {
847 bss->disable_11n = 1;
848 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not "
849 "allowed, disabling HT capabilities");
850 }
851
852 if (full_config && conf->ieee80211n &&
853 bss->ssid.security_policy == SECURITY_STATIC_WEP) {
854 bss->disable_11n = 1;
855 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not "
856 "allowed, disabling HT capabilities");
857 }
858
859 if (full_config && conf->ieee80211n && bss->wpa &&
860 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
861 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
862 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
863 {
864 bss->disable_11n = 1;
865 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 "
866 "requires CCMP/GCMP to be enabled, disabling HT "
867 "capabilities");
868 }
869 #endif /* CONFIG_IEEE80211N */
870
871 #ifdef CONFIG_IEEE80211AC
872 if (full_config && conf->ieee80211ac &&
873 bss->ssid.security_policy == SECURITY_STATIC_WEP) {
874 bss->disable_11ac = 1;
875 wpa_printf(MSG_ERROR,
876 "VHT (IEEE 802.11ac) with WEP is not allowed, disabling VHT capabilities");
877 }
878
879 if (full_config && conf->ieee80211ac && bss->wpa &&
880 !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
881 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
882 WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
883 {
884 bss->disable_11ac = 1;
885 wpa_printf(MSG_ERROR,
886 "VHT (IEEE 802.11ac) with WPA/WPA2 requires CCMP/GCMP to be enabled, disabling VHT capabilities");
887 }
888 #endif /* CONFIG_IEEE80211AC */
889
890 #ifdef CONFIG_WPS
891 if (full_config && bss->wps_state && bss->ignore_broadcast_ssid) {
892 wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid "
893 "configuration forced WPS to be disabled");
894 bss->wps_state = 0;
895 }
896
897 if (full_config && bss->wps_state &&
898 bss->ssid.wep.keys_set && bss->wpa == 0) {
899 wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be "
900 "disabled");
901 bss->wps_state = 0;
902 }
903
904 if (full_config && bss->wps_state && bss->wpa &&
905 (!(bss->wpa & 2) ||
906 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)))) {
907 wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without "
908 "WPA2/CCMP/GCMP forced WPS to be disabled");
909 bss->wps_state = 0;
910 }
911 #endif /* CONFIG_WPS */
912
913 #ifdef CONFIG_HS20
914 if (full_config && bss->hs20 &&
915 (!(bss->wpa & 2) ||
916 !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
917 WPA_CIPHER_CCMP_256 |
918 WPA_CIPHER_GCMP_256)))) {
919 wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP "
920 "configuration is required for Hotspot 2.0 "
921 "functionality");
922 return -1;
923 }
924 #endif /* CONFIG_HS20 */
925
926 #ifdef CONFIG_MBO
927 if (full_config && bss->mbo_enabled && (bss->wpa & 2) &&
928 bss->ieee80211w == NO_MGMT_FRAME_PROTECTION) {
929 wpa_printf(MSG_ERROR,
930 "MBO: PMF needs to be enabled whenever using WPA2 with MBO");
931 return -1;
932 }
933 #endif /* CONFIG_MBO */
934
935 return 0;
936 }
937
938
hostapd_config_check_cw(struct hostapd_config * conf,int queue)939 static int hostapd_config_check_cw(struct hostapd_config *conf, int queue)
940 {
941 int tx_cwmin = conf->tx_queue[queue].cwmin;
942 int tx_cwmax = conf->tx_queue[queue].cwmax;
943 int ac_cwmin = conf->wmm_ac_params[queue].cwmin;
944 int ac_cwmax = conf->wmm_ac_params[queue].cwmax;
945
946 if (tx_cwmin > tx_cwmax) {
947 wpa_printf(MSG_ERROR,
948 "Invalid TX queue cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)",
949 tx_cwmin, tx_cwmax);
950 return -1;
951 }
952 if (ac_cwmin > ac_cwmax) {
953 wpa_printf(MSG_ERROR,
954 "Invalid WMM AC cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)",
955 ac_cwmin, ac_cwmax);
956 return -1;
957 }
958 return 0;
959 }
960
961
hostapd_config_check(struct hostapd_config * conf,int full_config)962 int hostapd_config_check(struct hostapd_config *conf, int full_config)
963 {
964 size_t i;
965
966 if (full_config && conf->ieee80211d &&
967 (!conf->country[0] || !conf->country[1])) {
968 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without "
969 "setting the country_code");
970 return -1;
971 }
972
973 if (full_config && conf->ieee80211h && !conf->ieee80211d) {
974 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without "
975 "IEEE 802.11d enabled");
976 return -1;
977 }
978
979 if (full_config && conf->local_pwr_constraint != -1 &&
980 !conf->ieee80211d) {
981 wpa_printf(MSG_ERROR, "Cannot add Power Constraint element without Country element");
982 return -1;
983 }
984
985 if (full_config && conf->spectrum_mgmt_required &&
986 conf->local_pwr_constraint == -1) {
987 wpa_printf(MSG_ERROR, "Cannot set Spectrum Management bit without Country and Power Constraint elements");
988 return -1;
989 }
990
991 for (i = 0; i < NUM_TX_QUEUES; i++) {
992 if (hostapd_config_check_cw(conf, i))
993 return -1;
994 }
995
996 for (i = 0; i < conf->num_bss; i++) {
997 if (hostapd_config_check_bss(conf->bss[i], conf, full_config))
998 return -1;
999 }
1000
1001 return 0;
1002 }
1003
1004
hostapd_set_security_params(struct hostapd_bss_config * bss,int full_config)1005 void hostapd_set_security_params(struct hostapd_bss_config *bss,
1006 int full_config)
1007 {
1008 if (bss->individual_wep_key_len == 0) {
1009 /* individual keys are not use; can use key idx0 for
1010 * broadcast keys */
1011 bss->broadcast_key_idx_min = 0;
1012 }
1013
1014 if ((bss->wpa & 2) && bss->rsn_pairwise == 0)
1015 bss->rsn_pairwise = bss->wpa_pairwise;
1016 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, bss->wpa_pairwise,
1017 bss->rsn_pairwise);
1018
1019 if (full_config) {
1020 bss->radius->auth_server = bss->radius->auth_servers;
1021 bss->radius->acct_server = bss->radius->acct_servers;
1022 }
1023
1024 if (bss->wpa && bss->ieee802_1x) {
1025 bss->ssid.security_policy = SECURITY_WPA;
1026 } else if (bss->wpa) {
1027 bss->ssid.security_policy = SECURITY_WPA_PSK;
1028 } else if (bss->ieee802_1x) {
1029 int cipher = WPA_CIPHER_NONE;
1030 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
1031 bss->ssid.wep.default_len = bss->default_wep_key_len;
1032 if (full_config && bss->default_wep_key_len) {
1033 cipher = bss->default_wep_key_len >= 13 ?
1034 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40;
1035 } else if (full_config && bss->ssid.wep.keys_set) {
1036 if (bss->ssid.wep.len[0] >= 13)
1037 cipher = WPA_CIPHER_WEP104;
1038 else
1039 cipher = WPA_CIPHER_WEP40;
1040 }
1041 bss->wpa_group = cipher;
1042 bss->wpa_pairwise = cipher;
1043 bss->rsn_pairwise = cipher;
1044 if (full_config)
1045 bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
1046 } else if (bss->ssid.wep.keys_set) {
1047 int cipher = WPA_CIPHER_WEP40;
1048 if (bss->ssid.wep.len[0] >= 13)
1049 cipher = WPA_CIPHER_WEP104;
1050 bss->ssid.security_policy = SECURITY_STATIC_WEP;
1051 bss->wpa_group = cipher;
1052 bss->wpa_pairwise = cipher;
1053 bss->rsn_pairwise = cipher;
1054 if (full_config)
1055 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE;
1056 } else if (bss->osen) {
1057 bss->ssid.security_policy = SECURITY_OSEN;
1058 bss->wpa_group = WPA_CIPHER_CCMP;
1059 bss->wpa_pairwise = 0;
1060 bss->rsn_pairwise = WPA_CIPHER_CCMP;
1061 } else {
1062 bss->ssid.security_policy = SECURITY_PLAINTEXT;
1063 if (full_config) {
1064 bss->wpa_group = WPA_CIPHER_NONE;
1065 bss->wpa_pairwise = WPA_CIPHER_NONE;
1066 bss->rsn_pairwise = WPA_CIPHER_NONE;
1067 bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE;
1068 }
1069 }
1070 }
1071